Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

286 files changed, 83163 insertions, 0 deletions

diff --git a/lib/eventlog/Makefile.in b/lib/eventlog/Makefile.in
new file mode 100644
index 0000000..cd713c4
--- /dev/null
+++ b/lib/eventlog/Makefile.in
@@ -0,0 +1,265 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+devdir = @devdir@
+scriptdir = $(top_srcdir)/scripts
+incdir = $(top_srcdir)/include
+
+# Compiler & tools to use
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+EGREP = @EGREP@
+
+# C preprocessor flags
+CPPFLAGS = -I$(incdir) -I$(top_builddir) -I$(srcdir) -I$(top_srcdir) @CPPFLAGS@
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+
+# Flags to pass to the link stage
+LDFLAGS = @LDFLAGS@
+
+# Flags to pass to libtool
+LTFLAGS = @LT_STATIC@
+
+# Libraries
+LT_LIBS = $(top_builddir)/lib/util/libsudo_util.la
+LIBS = $(LT_LIBS)
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# cppcheck options, usually set in the top-level Makefile
+CPPCHECK_OPTS = -q --enable=warning,performance,portability --suppress=constStatement --suppress=compareBoolExpressionWithInt --error-exitcode=1 --inline-suppr -Dva_copy=va_copy -U__cplusplus -UQUAD_MAX -UQUAD_MIN -UUQUAD_MAX -U_POSIX_HOST_NAME_MAX -U_POSIX_PATH_MAX -U__NBBY -DNSIG=64
+
+# splint options, usually set in the top-level Makefile
+SPLINT_OPTS = -D__restrict= -checks
+
+# PVS-studio options
+PVS_CFG = $(top_srcdir)/PVS-Studio.cfg
+PVS_IGNORE = 'V707,V011,V002,V536'
+PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
+
+# Set to non-empty for development mode
+DEVEL = @DEVEL@
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+TEST_PROGS = check_wrap
+TEST_VERBOSE =
+
+LIBEVENTLOG_OBJS = eventlog.lo eventlog_conf.lo eventlog_free.lo logwrap.lo
+
+IOBJS = $(LIBEVENTLOG_OBJS:.lo=.i)
+
+POBJS = $(IOBJS:.i=.plog)
+
+CHECK_WRAP_OBJS = check_wrap.lo logwrap.lo
+
+all: libsudo_eventlog.la
+
+depend:
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/eventlog/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/eventlog/Makefile
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/eventlog/Makefile
+
+.SUFFIXES: .c .h .i .lo .plog
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+.c.i:
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+
+.i.plog:
+	ifile=$<; rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $${ifile%i}c --i-file $< --output-file $@
+
+libsudo_eventlog.la: $(LIBEVENTLOG_OBJS) $(LT_LIBS)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LIBEVENTLOG_OBJS) $(LT_LIBS)
+
+check_wrap: $(CHECK_WRAP_OBJS) $(LIBUTIL)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_WRAP_OBJS) $(LDFLAGS) $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(LIBS)
+
+pre-install:
+
+install:
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer:
+
+uninstall:
+
+splint:
+	splint $(SPLINT_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+cppcheck:
+	cppcheck $(CPPCHECK_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+pvs-log-files: $(POBJS)
+
+pvs-studio: $(POBJS)
+	plog-converter $(PVS_LOG_OPTS) $(POBJS)
+
+fuzz:
+
+check-fuzzer:
+
+check: $(TEST_PROGS) check-fuzzer
+	@if test X"$(cross_compiling)" != X"yes"; then \
+	    l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	    test -n "$$l" || l="C"; \
+	    LC_ALL="$$l"; export LC_ALL; \
+	    unset LANG || LANG=; \
+	    unset LANGUAGE || LANGUAGE=; \
+	    MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	    MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	    umask 022; \
+	    rval=0; \
+	    mkdir -p regress/logwrap; \
+	    ./check_wrap $(srcdir)/regress/logwrap/check_wrap.in > regress/logwrap/check_wrap.out; \
+	    diff regress/logwrap/check_wrap.out $(srcdir)/regress/logwrap/check_wrap.out.ok || rval=`expr $$rval + $$?`; \
+	    exit $$rval; \
+	fi
+
+check-verbose:
+	exec $(MAKE) $(MFLAGS) TEST_VERBOSE=-v FUZZ_VERBOSE=-verbosity=1 check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f *.lo *.o *.la $(TEST_PROGS)
+	-rm -f *.i *.plog stamp-* core *.core core.* regress/*/*.out
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile .libs
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean
+
+# Autogenerated dependencies, do not modify
+check_wrap.lo: $(srcdir)/regress/logwrap/check_wrap.c \
+               $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+               $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/logwrap/check_wrap.c
+check_wrap.i: $(srcdir)/regress/logwrap/check_wrap.c \
+               $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+               $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+check_wrap.plog: check_wrap.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/logwrap/check_wrap.c --i-file $< --output-file $@
+eventlog.lo: $(srcdir)/eventlog.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+             $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+             $(incdir)/sudo_gettext.h $(incdir)/sudo_json.h \
+             $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h \
+             $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/eventlog.c
+eventlog.i: $(srcdir)/eventlog.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+             $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+             $(incdir)/sudo_gettext.h $(incdir)/sudo_json.h \
+             $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h \
+             $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+eventlog.plog: eventlog.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/eventlog.c --i-file $< --output-file $@
+eventlog_conf.lo: $(srcdir)/eventlog_conf.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                  $(incdir)/sudo_gettext.h $(incdir)/sudo_json.h \
+                  $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h \
+                  $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/eventlog_conf.c
+eventlog_conf.i: $(srcdir)/eventlog_conf.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                  $(incdir)/sudo_gettext.h $(incdir)/sudo_json.h \
+                  $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h \
+                  $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+eventlog_conf.plog: eventlog_conf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/eventlog_conf.c --i-file $< --output-file $@
+eventlog_free.lo: $(srcdir)/eventlog_free.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_eventlog.h $(incdir)/sudo_queue.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/eventlog_free.c
+eventlog_free.i: $(srcdir)/eventlog_free.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_eventlog.h $(incdir)/sudo_queue.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+eventlog_free.plog: eventlog_free.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/eventlog_free.c --i-file $< --output-file $@
+logwrap.lo: $(srcdir)/logwrap.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_eventlog.h $(incdir)/sudo_queue.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/logwrap.c
+logwrap.i: $(srcdir)/logwrap.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_eventlog.h $(incdir)/sudo_queue.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+logwrap.plog: logwrap.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/logwrap.c --i-file $< --output-file $@
diff --git a/lib/eventlog/eventlog.c b/lib/eventlog/eventlog.c
new file mode 100644
index 0000000..cb60541
--- /dev/null
+++ b/lib/eventlog/eventlog.c
@@ -0,0 +1,1406 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1994-1996, 1998-2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <locale.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "pathnames.h"
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_lbuf.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_json.h"
+#include "sudo_queue.h"
+#include "sudo_util.h"
+
+#define IS_SESSID(s) ( \
+    isalnum((unsigned char)(s)[0]) && isalnum((unsigned char)(s)[1]) && \
+    (s)[2] == '/' && \
+    isalnum((unsigned char)(s)[3]) && isalnum((unsigned char)(s)[4]) && \
+    (s)[5] == '/' && \
+    isalnum((unsigned char)(s)[6]) && isalnum((unsigned char)(s)[7]) && \
+    (s)[8] == '\0')
+
+struct eventlog_args {
+    const char *reason;
+    const char *errstr;
+    const struct timespec *event_time;
+    eventlog_json_callback_t json_info_cb;
+    void *json_info;
+};
+
+/*
+ * Allocate and fill in a new logline.
+ */
+static bool
+new_logline(int event_type, int flags, struct eventlog_args *args,
+    const struct eventlog *evlog, struct sudo_lbuf *lbuf)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const char *iolog_file;
+    const char *tty, *tsid = NULL;
+    char exit_str[(((sizeof(int) * 8) + 2) / 3) + 2];
+    char sessid[7], offsetstr[64] = "";
+    int i;
+    debug_decl(new_logline, SUDO_DEBUG_UTIL);
+
+    if (ISSET(flags, EVLOG_RAW) || evlog == NULL) {
+	if (args->reason != NULL) {
+	    if (args->errstr != NULL) {
+		sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "%s: %s",
+		    args->reason, args->errstr);
+	    } else {
+		sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "%s", args->reason);
+	    }
+	    if (sudo_lbuf_error(lbuf))
+		goto oom;
+	}
+	debug_return_bool(true);
+    }
+
+    /* A TSID may be a sudoers-style session ID or a free-form string. */
+    iolog_file = evlog->iolog_file;
+    if (iolog_file != NULL) {
+	if (IS_SESSID(iolog_file)) {
+	    sessid[0] = iolog_file[0];
+	    sessid[1] = iolog_file[1];
+	    sessid[2] = iolog_file[3];
+	    sessid[3] = iolog_file[4];
+	    sessid[4] = iolog_file[6];
+	    sessid[5] = iolog_file[7];
+	    sessid[6] = '\0';
+	    tsid = sessid;
+	} else {
+	    tsid = iolog_file;
+	}
+	if (sudo_timespecisset(&evlog->iolog_offset)) {
+	    /* Only write up to two significant digits for the decimal part. */
+	    if (evlog->iolog_offset.tv_nsec > 10000000) {
+		(void)snprintf(offsetstr, sizeof(offsetstr), "@%lld.%02ld",
+		    (long long)evlog->iolog_offset.tv_sec,
+		    evlog->iolog_offset.tv_nsec / 10000000);
+	    } else if (evlog->iolog_offset.tv_sec != 0) {
+		(void)snprintf(offsetstr, sizeof(offsetstr), "@%lld",
+		    (long long)evlog->iolog_offset.tv_sec);
+	    }
+	}
+    }
+
+    /* Sudo-format logs use the short form of the ttyname. */
+    if ((tty = evlog->ttyname) != NULL) {
+	if (strncmp(tty, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
+	    tty += sizeof(_PATH_DEV) - 1;
+    }
+
+    /*
+     * Format the log line as an lbuf, escaping control characters in
+     * octal form (#0nn).  Error checking (ENOMEM) is done at the end.
+     */
+    if (args->reason != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "%s%s", args->reason,
+	    args->errstr ? " : " : " ; ");
+    }
+    if (args->errstr != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "%s ; ", args->errstr);
+    }
+    if (evlog->submithost != NULL && !evl_conf->omit_hostname) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "HOST=%s ; ",
+	    evlog->submithost);
+    }
+    if (tty != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "TTY=%s ; ", tty);
+    }
+    if (evlog->runchroot != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "CHROOT=%s ; ",
+	    evlog->runchroot);
+    }
+    if (evlog->runcwd != NULL || evlog->cwd != NULL) {
+	if (ISSET(flags, EVLOG_CWD)) {
+	    /* For sudoreplay -l output format. */
+	    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "CWD=%s ; ",
+		evlog->runcwd ? evlog->runcwd : evlog->cwd);
+	} else if (evlog->runcwd != NULL) {
+	    /* For backwards compatibility with sudo log format. */
+	    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "PWD=%s ; ",
+		evlog->runcwd);
+	}
+    }
+    if (evlog->runuser != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "USER=%s ; ",
+	    evlog->runuser);
+    }
+    if (evlog->rungroup != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "GROUP=%s ; ",
+	    evlog->rungroup);
+    }
+    if (tsid != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "TSID=%s%s ; ", tsid,
+	    offsetstr);
+    }
+    if (evlog->env_add != NULL && evlog->env_add[0] != NULL) {
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "ENV=%s",
+	    evlog->env_add[0]);
+	for (i = 1; evlog->env_add[i] != NULL; i++) {
+	    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, " %s",
+		evlog->env_add[i]);
+	}
+    }
+    if (evlog->command != NULL && evlog->argv != NULL) {
+	/* Command plus argv. */
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL|LBUF_ESC_BLANK,
+	    "COMMAND=%s", evlog->command);
+	if (evlog->argv[0] != NULL) {
+	    for (i = 1; evlog->argv[i] != NULL; i++) {
+		sudo_lbuf_append(lbuf, " ");
+		if (strchr(evlog->argv[i], ' ') != NULL) {
+		    /* Wrap args containing spaces in single quotes. */
+		    sudo_lbuf_append(lbuf, "'");
+		    sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL|LBUF_ESC_QUOTE,
+			"%s", evlog->argv[i]);
+		    sudo_lbuf_append(lbuf, "'");
+		} else {
+		    /* Escape quotes here too for consistency. */
+		    sudo_lbuf_append_esc(lbuf,
+			LBUF_ESC_CNTRL|LBUF_ESC_BLANK|LBUF_ESC_QUOTE,
+			"%s", evlog->argv[i]);
+		}
+	    }
+	}
+	if (event_type == EVLOG_EXIT) {
+	    if (evlog->signal_name != NULL) {
+		sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, " ; SIGNAL=%s",
+		    evlog->signal_name);
+	    }
+	    if (evlog->exit_value != -1) {
+		(void)snprintf(exit_str, sizeof(exit_str), "%d",
+		    evlog->exit_value);
+		sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, " ; EXIT=%s",
+		    exit_str);
+	    }
+	}
+    } else if (evlog->command != NULL) {
+	/* Just the command, no argv. */
+	sudo_lbuf_append_esc(lbuf, LBUF_ESC_CNTRL, "COMMAND=%s",
+	    evlog->command);
+    }
+
+    if (!sudo_lbuf_error(lbuf))
+	debug_return_bool(true);
+oom:
+    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+    debug_return_bool(false);
+}
+
+bool
+eventlog_store_sudo(int event_type, const struct eventlog *evlog,
+    struct sudo_lbuf *lbuf)
+{
+    struct eventlog_args args = { NULL };
+
+    return new_logline(event_type, EVLOG_CWD, &args, evlog, lbuf);
+}
+
+static void
+closefrom_nodebug(int lowfd)
+{
+    unsigned char *debug_fds;
+    int fd, startfd;
+    debug_decl(closefrom_nodebug, SUDO_DEBUG_UTIL);
+
+    startfd = sudo_debug_get_fds(&debug_fds) + 1;
+    if (lowfd > startfd)
+	startfd = lowfd;
+
+    /* Close fds higher than the debug fds. */
+    sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	"closing fds >= %d", startfd);
+    closefrom(startfd);
+
+    /* Close fds [lowfd, startfd) that are not in debug_fds. */
+    for (fd = lowfd; fd < startfd; fd++) {
+	if (sudo_isset(debug_fds, fd))
+	    continue;
+	sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	    "closing fd %d", fd);
+#ifdef __APPLE__
+	/* Avoid potential libdispatch crash when we close its fds. */
+	(void) fcntl(fd, F_SETFD, FD_CLOEXEC);
+#else
+	(void) close(fd);
+#endif
+    }
+    debug_return;
+}
+
+#define MAX_MAILFLAGS	63
+
+sudo_noreturn static void
+exec_mailer(int pipein)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    char *last, *mflags, *p, *argv[MAX_MAILFLAGS + 1];
+    const char *mpath = evl_conf->mailerpath;
+    int i;
+    const char * const root_envp[] = {
+	"HOME=/",
+	"PATH=/usr/bin:/bin:/usr/sbin:/sbin",
+	"LOGNAME=root",
+	"USER=root",
+# ifdef _AIX
+	"LOGIN=root",
+# endif
+	NULL
+    };
+    debug_decl(exec_mailer, SUDO_DEBUG_UTIL);
+
+    /* Set stdin to read side of the pipe. */
+    if (dup3(pipein, STDIN_FILENO, 0) == -1) {
+	syslog(LOG_ERR, _("unable to dup stdin: %m")); // -V618
+	sudo_debug_printf(SUDO_DEBUG_ERROR,
+	    "unable to dup stdin: %s", strerror(errno));
+	sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+	_exit(127);
+    }
+
+    /* Build up an argv based on the mailer path and flags */
+    if ((mflags = strdup(evl_conf->mailerflags)) == NULL) {
+	syslog(LOG_ERR, _("unable to allocate memory")); // -V618
+	sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+	_exit(127);
+    }
+    argv[0] = sudo_basename(mpath);
+
+    i = 1;
+    if ((p = strtok_r(mflags, " \t", &last))) {
+	do {
+	    argv[i] = p;
+	} while (++i < MAX_MAILFLAGS && (p = strtok_r(NULL, " \t", &last)));
+    }
+    argv[i] = NULL;
+
+    /*
+     * Depending on the config, either run the mailer as root
+     * (so user cannot kill it) or as the user (for the paranoid).
+     */
+    if (setuid(ROOT_UID) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR, "unable to change uid to %u",
+	    ROOT_UID);
+    }
+    if (evl_conf->mailuid != ROOT_UID) {
+	if (setuid(evl_conf->mailuid) != 0) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR, "unable to change uid to %u",
+		(unsigned int)evl_conf->mailuid);
+	}
+    }
+    sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+    if (evl_conf->mailuid == ROOT_UID)
+	execve(mpath, argv, (char **)root_envp);
+    else
+	execv(mpath, argv);
+    syslog(LOG_ERR, _("unable to execute %s: %m"), mpath); // -V618
+    sudo_debug_printf(SUDO_DEBUG_ERROR, "unable to execute %s: %s",
+	mpath, strerror(errno));
+    _exit(127);
+}
+
+/* Send a message to the mailto user */
+static bool
+send_mail(const struct eventlog *evlog, const char *message)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const char *cp, *timefmt = evl_conf->time_fmt;
+    struct sigaction sa;
+    char timebuf[1024];
+    sigset_t chldmask;
+    struct tm tm;
+    time_t now;
+    FILE *mail;
+    int fd, len, pfd[2], status;
+    pid_t pid, rv;
+    struct stat sb;
+#if defined(HAVE_NL_LANGINFO) && defined(CODESET)
+    char *locale;
+#endif
+    debug_decl(send_mail, SUDO_DEBUG_UTIL);
+
+    /* If mailer is disabled just return. */
+    if (evl_conf->mailerpath == NULL || evl_conf->mailto == NULL)
+	debug_return_bool(true);
+
+    /* Make sure the mailer exists and is a regular file. */
+    if (stat(evl_conf->mailerpath, &sb) != 0 || !S_ISREG(sb.st_mode))
+	debug_return_bool(false);
+
+    time(&now);
+    if (localtime_r(&now, &tm) == NULL)
+	debug_return_bool(false);
+
+    /* Block SIGCHLD for the duration since we call waitpid() below. */
+    sigemptyset(&chldmask);
+    sigaddset(&chldmask, SIGCHLD);
+    (void)sigprocmask(SIG_BLOCK, &chldmask, NULL);
+
+    /* Fork and return, child will daemonize. */
+    switch (pid = sudo_debug_fork()) {
+	case -1:
+	    /* Error. */
+	    sudo_warn("%s", U_("unable to fork"));
+
+	    /* Unblock SIGCHLD and return. */
+	    (void)sigprocmask(SIG_UNBLOCK, &chldmask, NULL);
+	    debug_return_bool(false);
+	case 0:
+	    /* Child. */
+	    switch (fork()) {
+		case -1:
+		    /* Error. */
+		    syslog(LOG_ERR, _("unable to fork: %m")); // -V618
+		    sudo_debug_printf(SUDO_DEBUG_ERROR, "unable to fork: %s",
+			strerror(errno));
+		    sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+		    _exit(EXIT_FAILURE);
+		case 0:
+		    /* Grandchild continues below. */
+		    sudo_debug_enter(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+		    break;
+		default:
+		    /* Parent will wait for us. */
+		    _exit(EXIT_SUCCESS);
+	    }
+	    break;
+	default:
+	    /* Parent. */
+	    for (;;) {
+		rv = waitpid(pid, &status, 0);
+		if (rv == -1 && errno != EINTR)
+		    break;
+		if (rv != -1 && !WIFSTOPPED(status))
+		    break;
+	    }
+	    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+		"child (%d) exit value %d", (int)rv, status);
+
+	    /* Unblock SIGCHLD and return. */
+	    (void)sigprocmask(SIG_UNBLOCK, &chldmask, NULL);
+	    debug_return_bool(true);
+    }
+
+    /* Reset SIGCHLD to default and unblock it. */
+    memset(&sa, 0, sizeof(sa));
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = SA_RESTART;
+    sa.sa_handler = SIG_DFL;
+    (void)sigaction(SIGCHLD, &sa, NULL);
+    (void)sigprocmask(SIG_UNBLOCK, &chldmask, NULL);
+
+    /* Daemonize - disassociate from session/tty. */
+    if (setsid() == -1)
+      sudo_warn("setsid");
+    if (chdir("/") == -1)
+      sudo_warn("chdir(/)");
+    fd = open(_PATH_DEVNULL, O_RDWR, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
+    if (fd != -1) {
+	(void) dup2(fd, STDIN_FILENO);
+	(void) dup2(fd, STDOUT_FILENO);
+	(void) dup2(fd, STDERR_FILENO);
+    }
+
+    /* Close non-debug fds so we don't leak anything. */
+    closefrom_nodebug(STDERR_FILENO + 1);
+
+    if (pipe2(pfd, O_CLOEXEC) == -1) {
+	syslog(LOG_ERR, _("unable to open pipe: %m")); // -V618
+	sudo_debug_printf(SUDO_DEBUG_ERROR, "unable to open pipe: %s",
+	    strerror(errno));
+	sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+	_exit(EXIT_FAILURE);
+    }
+
+    switch (pid = sudo_debug_fork()) {
+	case -1:
+	    /* Error. */
+	    syslog(LOG_ERR, _("unable to fork: %m")); // -V618
+	    sudo_debug_printf(
+		SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+		"unable to fork");
+	    sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+	    _exit(EXIT_FAILURE);
+	    break;
+	case 0:
+	    /* Child. */
+	    exec_mailer(pfd[0]);
+	    /* NOTREACHED */
+    }
+
+    (void) close(pfd[0]);
+    if ((mail = fdopen(pfd[1], "w")) == NULL) {
+	syslog(LOG_ERR, "fdopen: %m");
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to fdopen pipe");
+	sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+	_exit(EXIT_FAILURE);
+    }
+
+    /* Pipes are all setup, send message. */
+    (void) fprintf(mail, "To: %s\nFrom: %s\nAuto-Submitted: %s\nSubject: ",
+	evl_conf->mailto,
+	evl_conf->mailfrom ? evl_conf->mailfrom :
+	(evlog ? evlog->submituser : "root"),
+	"auto-generated");
+    for (cp = _(evl_conf->mailsub); *cp; cp++) {
+	/* Expand escapes in the subject */
+	if (*cp == '%' && *(cp+1) != '%') {
+	    switch (*(++cp)) {
+		case 'h':
+		    if (evlog != NULL)
+			(void) fputs(evlog->submithost, mail);
+		    break;
+		case 'u':
+		    if (evlog != NULL)
+			(void) fputs(evlog->submituser, mail);
+		    break;
+		default:
+		    cp--;
+		    break;
+	    }
+	} else
+	    (void) fputc(*cp, mail);
+    }
+
+#if defined(HAVE_NL_LANGINFO) && defined(CODESET)
+    locale = setlocale(LC_ALL, NULL);
+    if (locale[0] != 'C' || locale[1] != '\0')
+	(void) fprintf(mail, "\nContent-Type: text/plain; charset=\"%s\"\nContent-Transfer-Encoding: 8bit", nl_langinfo(CODESET));
+#endif /* HAVE_NL_LANGINFO && CODESET */
+
+    timebuf[sizeof(timebuf) - 1] = '\0';
+    len = strftime(timebuf, sizeof(timebuf), timefmt, &tm);
+    if (len == 0 || timebuf[sizeof(timebuf) - 1] != '\0') {
+	sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_ERROR,
+	    "strftime() failed to format time: %s", timefmt);
+	/* Fall back to default time format string. */
+	timebuf[sizeof(timebuf) - 1] = '\0';
+	len = strftime(timebuf, sizeof(timebuf), "%h %e %T", &tm);
+	if (len == 0 || timebuf[sizeof(timebuf) - 1] != '\0') {
+	    timebuf[0] = '\0';		/* give up */
+	}
+    }
+    if (evlog != NULL) {
+	(void) fprintf(mail, "\n\n%s : %s : %s : ", evlog->submithost, timebuf,
+	    evlog->submituser);
+    } else {
+	(void) fprintf(mail, "\n\n%s : ", timebuf);
+    }
+    fputs(message, mail);
+    fputs("\n\n", mail);
+
+    fclose(mail);
+    for (;;) {
+	rv = waitpid(pid, &status, 0);
+	if (rv == -1 && errno != EINTR)
+	    break;
+	if (rv != -1 && !WIFSTOPPED(status))
+	    break;
+    }
+    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+	"child (%d) exit value %d", (int)rv, status);
+    sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
+    _exit(EXIT_SUCCESS);
+}
+
+static bool
+json_add_timestamp(struct json_container *jsonc, const char *name,
+    const struct timespec *ts, bool format_timestamp)
+{
+    struct json_value json_value;
+    int len;
+    debug_decl(json_add_timestamp, SUDO_DEBUG_PLUGIN);
+
+    if (!sudo_json_open_object(jsonc, name))
+	goto oom;
+
+    json_value.type = JSON_NUMBER;
+    json_value.u.number = ts->tv_sec;
+    if (!sudo_json_add_value(jsonc, "seconds", &json_value))
+	goto oom;
+
+    json_value.type = JSON_NUMBER;
+    json_value.u.number = ts->tv_nsec;
+    if (!sudo_json_add_value(jsonc, "nanoseconds", &json_value))
+	goto oom;
+
+    if (format_timestamp) {
+	const struct eventlog_config *evl_conf = eventlog_getconf();
+	const char *timefmt = evl_conf->time_fmt;
+	time_t secs = ts->tv_sec;
+	char timebuf[1024];
+	struct tm tm;
+
+	if (gmtime_r(&secs, &tm) != NULL) {
+	    timebuf[sizeof(timebuf) - 1] = '\0';
+	    len = strftime(timebuf, sizeof(timebuf), "%Y%m%d%H%M%SZ", &tm);
+	    if (len != 0 && timebuf[sizeof(timebuf) - 1] == '\0') {
+		json_value.type = JSON_STRING;
+		json_value.u.string = timebuf; // -V507
+		if (!sudo_json_add_value(jsonc, "iso8601", &json_value))
+		    goto oom;
+	    }
+	}
+
+	if (localtime_r(&secs, &tm) != NULL) {
+	    timebuf[sizeof(timebuf) - 1] = '\0';
+	    len = strftime(timebuf, sizeof(timebuf), timefmt, &tm);
+	    if (len != 0 && timebuf[sizeof(timebuf) - 1] == '\0') {
+		json_value.type = JSON_STRING;
+		json_value.u.string = timebuf; // -V507
+		if (!sudo_json_add_value(jsonc, "localtime", &json_value))
+		    goto oom;
+	    }
+	}
+    }
+
+    if (!sudo_json_close_object(jsonc))
+	goto oom;
+
+    debug_return_bool(true);
+oom:
+    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	"%s: %s", __func__, "unable to allocate memory");
+    debug_return_bool(false);
+}
+
+/*
+ * Store the contents of struct eventlog as JSON.
+ * The submit_time and iolog_path members are not stored, they should
+ * be stored and formatted by the caller.
+ */
+bool
+eventlog_store_json(struct json_container *jsonc, const struct eventlog *evlog)
+{
+    struct json_value json_value;
+    size_t i;
+    char *cp;
+    debug_decl(eventlog_store_json, SUDO_DEBUG_UTIL);
+
+    /* Required settings. */
+    if (evlog == NULL || evlog->submituser == NULL)
+	debug_return_bool(false);
+
+    /*
+     * The most important values are written first in case
+     * the log record gets truncated.
+     * Note: submit_time and iolog_path are not stored here.
+     */
+
+    json_value.type = JSON_STRING;
+    json_value.u.string = evlog->submituser;
+    if (!sudo_json_add_value(jsonc, "submituser", &json_value))
+	goto oom;
+
+    if (evlog->command != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->command;
+	if (!sudo_json_add_value(jsonc, "command", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->runuser != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->runuser;
+	if (!sudo_json_add_value(jsonc, "runuser", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->rungroup != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->rungroup;
+	if (!sudo_json_add_value(jsonc, "rungroup", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->runchroot != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->runchroot;
+	if (!sudo_json_add_value(jsonc, "runchroot", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->runcwd != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->runcwd;
+	if (!sudo_json_add_value(jsonc, "runcwd", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->ttyname != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->ttyname;
+	if (!sudo_json_add_value(jsonc, "ttyname", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->submithost != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->submithost;
+	if (!sudo_json_add_value(jsonc, "submithost", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->cwd != NULL) {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->cwd;
+	if (!sudo_json_add_value(jsonc, "submitcwd", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->rungroup!= NULL && evlog->rungid != (gid_t)-1) {
+	json_value.type = JSON_ID;
+	json_value.u.id = evlog->rungid;
+	if (!sudo_json_add_value(jsonc, "rungid", &json_value))
+	    goto oom;
+    }
+
+    if (evlog->runuid != (uid_t)-1) {
+	json_value.type = JSON_ID;
+	json_value.u.id = evlog->runuid;
+	if (!sudo_json_add_value(jsonc, "runuid", &json_value))
+	    goto oom;
+    }
+
+    json_value.type = JSON_NUMBER;
+    json_value.u.number = evlog->columns;
+    if (!sudo_json_add_value(jsonc, "columns", &json_value))
+        goto oom;
+
+    json_value.type = JSON_NUMBER;
+    json_value.u.number = evlog->lines;
+    if (!sudo_json_add_value(jsonc, "lines", &json_value))
+        goto oom;
+
+    if (evlog->argv != NULL) {
+	if (!sudo_json_open_array(jsonc, "runargv"))
+	    goto oom;
+	for (i = 0; (cp = evlog->argv[i]) != NULL; i++) {
+	    json_value.type = JSON_STRING;
+	    json_value.u.string = cp;
+	    if (!sudo_json_add_value(jsonc, NULL, &json_value))
+		goto oom;
+	}
+	if (!sudo_json_close_array(jsonc))
+	    goto oom;
+    }
+
+    if (evlog->envp != NULL) {
+	if (!sudo_json_open_array(jsonc, "runenv"))
+	    goto oom;
+	for (i = 0; (cp = evlog->envp[i]) != NULL; i++) {
+	    json_value.type = JSON_STRING;
+	    json_value.u.string = cp;
+	    if (!sudo_json_add_value(jsonc, NULL, &json_value))
+		goto oom;
+	}
+	if (!sudo_json_close_array(jsonc))
+	    goto oom;
+    }
+
+    debug_return_bool(true);
+
+oom:
+    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+    debug_return_bool(false);
+}
+
+static bool
+default_json_cb(struct json_container *jsonc, void *v)
+{
+    return eventlog_store_json(jsonc, v);
+}
+
+static char *
+format_json(int event_type, struct eventlog_args *args,
+    const struct eventlog *evlog, bool compact)
+{
+    eventlog_json_callback_t info_cb = args->json_info_cb;
+    void *info = args->json_info;
+    struct json_container jsonc = { 0 };
+    struct json_value json_value;
+    const char *time_str, *type_str;
+    struct timespec now;
+    debug_decl(format_json, SUDO_DEBUG_UTIL);
+
+    if (info_cb == NULL) {
+	info_cb = default_json_cb;
+	info = (void *)evlog;
+    }
+
+    if (sudo_gettime_real(&now) == -1) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to read the clock");
+	debug_return_str(NULL);
+    }
+
+    switch (event_type) {
+    case EVLOG_ACCEPT:
+	type_str = "accept";
+	time_str = "submit_time";
+	break;
+    case EVLOG_REJECT:
+	type_str = "reject";
+	time_str = "submit_time";
+	break;
+    case EVLOG_ALERT:
+	type_str = "alert";
+	time_str = "alert_time";
+	break;
+    case EVLOG_EXIT:
+	type_str = "exit";
+	time_str = "exit_time";
+	break;
+    default:
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unexpected event type %d", event_type);
+	debug_return_str(NULL);
+    }
+
+    if (!sudo_json_init(&jsonc, 4, compact, false, false))
+	goto bad;
+    if (!sudo_json_open_object(&jsonc, type_str))
+	goto bad;
+
+    if (evlog != NULL && evlog->uuid_str[0] != '\0') {
+	json_value.type = JSON_STRING;
+	json_value.u.string = evlog->uuid_str;
+	if (!sudo_json_add_value(&jsonc, "uuid", &json_value))
+	    goto bad;
+    }
+
+    /* Reject and Alert events include a reason and optional error string. */
+    if (args->reason != NULL) {
+	char *ereason = NULL;
+
+	if (args->errstr != NULL) {
+	    const int len = asprintf(&ereason, _("%s: %s"), args->reason,
+		args->errstr);
+	    if (len == -1) {
+		sudo_warnx(U_("%s: %s"), __func__,
+		    U_("unable to allocate memory"));
+		goto bad;
+	    }
+	}
+	json_value.type = JSON_STRING;
+	json_value.u.string = ereason ? ereason : args->reason;
+	if (!sudo_json_add_value(&jsonc, "reason", &json_value)) {
+	    free(ereason);
+	    goto bad;
+	}
+	free(ereason);
+    }
+
+    /* Log event time on server (set earlier) */
+    if (!json_add_timestamp(&jsonc, "server_time", &now, true)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable format timestamp");
+	goto bad;
+    }
+
+    /* Log event time from client */
+    if (args->event_time != NULL) {
+	if (!json_add_timestamp(&jsonc, time_str, args->event_time, true)) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"unable format timestamp");
+	    goto bad;
+	}
+    }
+
+    if (event_type == EVLOG_EXIT) {
+	/* Exit events don't need evlog details if there is a UUID. */
+	if (evlog != NULL && evlog->uuid_str[0] != '\0') {
+	    if (args->json_info == NULL)
+		info = NULL;
+	}
+
+	if (sudo_timespecisset(&evlog->run_time)) {
+	    if (!json_add_timestamp(&jsonc, "run_time", &evlog->run_time, false)) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "unable format timestamp");
+		goto bad;
+	    }
+	}
+	if (evlog->signal_name != NULL) {
+	    json_value.type = JSON_STRING;
+	    json_value.u.string = evlog->signal_name;
+	    if (!sudo_json_add_value(&jsonc, "signal", &json_value))
+		goto bad;
+
+	    json_value.type = JSON_BOOL;
+	    json_value.u.boolean = evlog->dumped_core;
+	    if (!sudo_json_add_value(&jsonc, "dumped_core", &json_value))
+		goto bad;
+	}
+	json_value.type = JSON_NUMBER;
+	json_value.u.number = evlog->exit_value;
+	if (!sudo_json_add_value(&jsonc, "exit_value", &json_value))
+	    goto bad;
+    }
+
+     /* Event log info may be missing for alert messages. */
+     if (evlog != NULL) {
+	if (evlog->peeraddr != NULL) {
+	    json_value.type = JSON_STRING;
+	    json_value.u.string = evlog->peeraddr;
+	    if (!sudo_json_add_value(&jsonc, "peeraddr", &json_value))
+		goto bad;
+	}
+
+	if (evlog->iolog_path != NULL) {
+	    json_value.type = JSON_STRING;
+	    json_value.u.string = evlog->iolog_path;
+	    if (!sudo_json_add_value(&jsonc, "iolog_path", &json_value))
+		goto bad;
+
+	    if (sudo_timespecisset(&evlog->iolog_offset)) {
+		if (!json_add_timestamp(&jsonc, "iolog_offset", &evlog->iolog_offset, false)) {
+		    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+			"unable format timestamp");
+		    goto bad;
+		}
+	    }
+	}
+    }
+
+    /* Write log info. */
+    if (info != NULL) {
+	if (!info_cb(&jsonc, info))
+	    goto bad;
+    }
+
+    if (!sudo_json_close_object(&jsonc))
+	goto bad;
+
+    /* Caller is responsible for freeing the buffer. */
+    debug_return_str(sudo_json_get_buf(&jsonc));
+
+bad:
+    sudo_json_free(&jsonc);
+    debug_return_str(NULL);
+}
+
+/*
+ * Log a message to syslog, prepending the username and splitting the
+ * message into parts if it is longer than syslog_maxlen.
+ */
+static bool
+do_syslog_sudo(int pri, char *logline, const struct eventlog *evlog)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    size_t len, maxlen;
+    char *p, *tmp, save;
+    const char *fmt;
+    debug_decl(do_syslog_sudo, SUDO_DEBUG_UTIL);
+
+    evl_conf->open_log(EVLOG_SYSLOG, NULL);
+
+    if (evlog == NULL) {
+	/* Not a command, just log it as-is. */
+	syslog(pri, "%s", logline);
+	goto done;
+    }
+
+    /*
+     * Log the full line, breaking into multiple syslog(3) calls if necessary
+     */
+    fmt = _("%8s : %s");
+    maxlen = evl_conf->syslog_maxlen -
+	(strlen(fmt) - 5 + strlen(evlog->submituser));
+    for (p = logline; *p != '\0'; ) {
+	len = strlen(p);
+	if (len > maxlen) {
+	    /*
+	     * Break up the line into what will fit on one syslog(3) line
+	     * Try to avoid breaking words into several lines if possible.
+	     */
+	    tmp = memrchr(p, ' ', maxlen);
+	    if (tmp == NULL)
+		tmp = p + maxlen;
+
+	    /* NULL terminate line, but save the char to restore later */
+	    save = *tmp;
+	    *tmp = '\0';
+
+	    syslog(pri, fmt, evlog->submituser, p);
+
+	    *tmp = save;			/* restore saved character */
+
+	    /* Advance p and eliminate leading whitespace */
+	    for (p = tmp; *p == ' '; p++)
+		continue;
+	} else {
+	    syslog(pri, fmt, evlog->submituser, p);
+	    p += len;
+	}
+	fmt = _("%8s : (command continued) %s");
+	maxlen = evl_conf->syslog_maxlen -
+	    (strlen(fmt) - 5 + strlen(evlog->submituser));
+    }
+done:
+    evl_conf->close_log(EVLOG_SYSLOG, NULL);
+
+    debug_return_bool(true);
+}
+
+static bool
+do_syslog_json(int pri, int event_type, struct eventlog_args *args,
+    const struct eventlog *evlog)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    char *json_str;
+    debug_decl(do_syslog_json, SUDO_DEBUG_UTIL);
+
+    /* Format as a compact JSON message (no newlines) */
+    json_str = format_json(event_type, args, evlog, true);
+    if (json_str == NULL)
+	debug_return_bool(false);
+
+    /* Syslog it in a sudo object with a @cee: prefix. */
+    /* TODO: use evl_conf->syslog_maxlen to break up long messages. */
+    evl_conf->open_log(EVLOG_SYSLOG, NULL);
+    syslog(pri, "@cee:{\"sudo\":{%s}}", json_str);
+    evl_conf->close_log(EVLOG_SYSLOG, NULL);
+    free(json_str);
+    debug_return_bool(true);
+}
+
+/*
+ * Log a message to syslog in either sudo or JSON format.
+ */
+static bool
+do_syslog(int event_type, int flags, struct eventlog_args *args,
+    const struct eventlog *evlog)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    struct sudo_lbuf lbuf;
+    bool ret = false;
+    int pri;
+    debug_decl(do_syslog, SUDO_DEBUG_UTIL);
+
+    sudo_lbuf_init(&lbuf, NULL, 0, NULL, 0);
+
+    /* Sudo format logs and mailed logs use the same log line format. */
+    if (evl_conf->format == EVLOG_SUDO || ISSET(flags, EVLOG_MAIL)) {
+	if (!new_logline(event_type, flags, args, evlog, &lbuf))
+	    goto done;
+
+	if (ISSET(flags, EVLOG_MAIL)) {
+	    if (!send_mail(evlog, lbuf.buf)) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "unable to mail log line");
+	    }
+	    if (ISSET(flags, EVLOG_MAIL_ONLY)) {
+		ret = true;
+		goto done;
+	    }
+	}
+    }
+
+    switch (event_type) {
+    case EVLOG_ACCEPT:
+    case EVLOG_EXIT:
+	pri = evl_conf->syslog_acceptpri;
+	break;
+    case EVLOG_REJECT:
+	pri = evl_conf->syslog_rejectpri;
+	break;
+    case EVLOG_ALERT:
+	pri = evl_conf->syslog_alertpri;
+	break;
+    default:
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unexpected event type %d", event_type);
+	pri = -1;
+	break;
+    }
+    if (pri == -1) {
+	/* syslog disabled for this message type */
+	ret = true;
+	goto done;
+    }
+
+    switch (evl_conf->format) {
+    case EVLOG_SUDO:
+	ret = do_syslog_sudo(pri, lbuf.buf, evlog);
+	break;
+    case EVLOG_JSON:
+	ret = do_syslog_json(pri, event_type, args, evlog);
+	break;
+    default:
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unexpected eventlog format %d", evl_conf->format);
+	break;
+    }
+done:
+    sudo_lbuf_destroy(&lbuf);
+    debug_return_bool(ret);
+}
+
+static bool
+do_logfile_sudo(const char *logline, const struct eventlog *evlog,
+    const struct timespec *event_time)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    char *full_line, timebuf[8192], *timestr = NULL;
+    const char *timefmt = evl_conf->time_fmt;
+    const char *logfile = evl_conf->logpath;
+    struct tm tm;
+    bool ret = false;
+    FILE *fp;
+    int len;
+    debug_decl(do_logfile_sudo, SUDO_DEBUG_UTIL);
+
+    if ((fp = evl_conf->open_log(EVLOG_FILE, logfile)) == NULL)
+	debug_return_bool(false);
+
+    if (!sudo_lock_file(fileno(fp), SUDO_LOCK)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to lock log file %s", logfile);
+	goto done;
+    }
+
+    if (event_time != NULL) {
+	time_t tv_sec = event_time->tv_sec;
+	if (localtime_r(&tv_sec, &tm) != NULL) {
+	    /* strftime() does not guarantee to NUL-terminate so we must check. */
+	    timebuf[sizeof(timebuf) - 1] = '\0';
+	    if (strftime(timebuf, sizeof(timebuf), timefmt, &tm) != 0 &&
+		    timebuf[sizeof(timebuf) - 1] == '\0') {
+		timestr = timebuf;
+	    }
+	}
+    }
+    if (evlog != NULL) {
+	len = asprintf(&full_line, "%s : %s : %s",
+	    timestr ? timestr : "invalid date", evlog->submituser, logline);
+    } else {
+	len = asprintf(&full_line, "%s : %s",
+	    timestr ? timestr : "invalid date", logline);
+    }
+    if (len == -1) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	goto done;
+    }
+    eventlog_writeln(fp, full_line, len, evl_conf->file_maxlen);
+    free(full_line);
+    (void)fflush(fp);
+    if (ferror(fp)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to write log file %s", logfile);
+	goto done;
+    }
+    ret = true;
+
+done:
+    (void)sudo_lock_file(fileno(fp), SUDO_UNLOCK);
+    evl_conf->close_log(EVLOG_FILE, fp);
+    debug_return_bool(ret);
+}
+
+static bool
+do_logfile_json(int event_type, struct eventlog_args *args,
+    const struct eventlog *evlog)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const char *logfile = evl_conf->logpath;
+    struct stat sb;
+    char *json_str;
+    int ret = false;
+    FILE *fp;
+    debug_decl(do_logfile_json, SUDO_DEBUG_UTIL);
+
+    if ((fp = evl_conf->open_log(EVLOG_FILE, logfile)) == NULL)
+	debug_return_bool(false);
+
+    json_str = format_json(event_type, args, evlog, false);
+    if (json_str == NULL)
+	goto done;
+
+    if (!sudo_lock_file(fileno(fp), SUDO_LOCK)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to lock log file %s", logfile);
+	goto done;
+    }
+
+    /* Note: assumes file ends in "\n}\n" */
+    if (fstat(fileno(fp), &sb) == -1) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "unable to stat %s", logfile);
+	goto done;
+    }
+    if (sb.st_size == 0) {
+	/* New file */
+	putc('{', fp);
+    } else if (fseeko(fp, -3, SEEK_END) == 0) {
+	/* Continue file, overwrite the final "\n}\n" */
+	putc(',', fp);
+    } else {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "unable to seek %s", logfile);
+	goto done;
+    }
+    fputs(json_str, fp);
+    fputs("\n}\n", fp);			/* close JSON */
+    fflush(fp);
+    /* XXX - check for file error and recover */
+
+    ret = true;
+
+done:
+    free(json_str);
+    (void)sudo_lock_file(fileno(fp), SUDO_UNLOCK);
+    evl_conf->close_log(EVLOG_FILE, fp);
+    debug_return_bool(ret);
+}
+
+static bool
+do_logfile(int event_type, int flags, struct eventlog_args *args,
+    const struct eventlog *evlog)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    struct sudo_lbuf lbuf;
+    bool ret = false;
+    debug_decl(do_logfile, SUDO_DEBUG_UTIL);
+
+    sudo_lbuf_init(&lbuf, NULL, 0, NULL, 0);
+
+    /* Sudo format logs and mailed logs use the same log line format. */
+    if (evl_conf->format == EVLOG_SUDO || ISSET(flags, EVLOG_MAIL)) {
+	if (!new_logline(event_type, flags, args, evlog, &lbuf))
+	    goto done;
+
+	if (ISSET(flags, EVLOG_MAIL)) {
+	    if (!send_mail(evlog, lbuf.buf)) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "unable to mail log line");
+	    }
+	    if (ISSET(flags, EVLOG_MAIL_ONLY)) {
+		ret = true;
+		goto done;
+	    }
+	}
+    }
+
+    switch (evl_conf->format) {
+    case EVLOG_SUDO:
+	ret = do_logfile_sudo(lbuf.buf ? lbuf.buf : args->reason, evlog,
+	    args->event_time);
+	break;
+    case EVLOG_JSON:
+	ret = do_logfile_json(event_type, args, evlog);
+	break;
+    default:
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unexpected eventlog format %d", evl_conf->format);
+	break;
+    }
+
+done:
+    sudo_lbuf_destroy(&lbuf);
+    debug_return_bool(ret);
+}
+
+bool
+eventlog_accept(const struct eventlog *evlog, int flags,
+    eventlog_json_callback_t info_cb, void *info)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const int log_type = evl_conf->type;
+    struct eventlog_args args = { NULL };
+    bool ret = true;
+    debug_decl(eventlog_accept, SUDO_DEBUG_UTIL);
+
+    args.event_time = &evlog->submit_time;
+    args.json_info_cb = info_cb;
+    args.json_info = info;
+
+    if (ISSET(log_type, EVLOG_SYSLOG)) {
+	if (!do_syslog(EVLOG_ACCEPT, flags, &args, evlog))
+	    ret = false;
+	CLR(flags, EVLOG_MAIL);
+    }
+    if (ISSET(log_type, EVLOG_FILE)) {
+	if (!do_logfile(EVLOG_ACCEPT, flags, &args, evlog))
+	    ret = false;
+    }
+
+    debug_return_bool(ret);
+}
+
+bool
+eventlog_reject(const struct eventlog *evlog, int flags, const char *reason,
+    eventlog_json_callback_t info_cb, void *info)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const int log_type = evl_conf->type;
+    struct eventlog_args args = { NULL };
+    bool ret = true;
+    debug_decl(eventlog_reject, SUDO_DEBUG_UTIL);
+
+    args.reason = reason;
+    args.event_time = &evlog->submit_time;
+    args.json_info_cb = info_cb;
+    args.json_info = info;
+
+    if (ISSET(log_type, EVLOG_SYSLOG)) {
+	if (!do_syslog(EVLOG_REJECT, flags, &args, evlog))
+	    ret = false;
+	CLR(flags, EVLOG_MAIL);
+    }
+    if (ISSET(log_type, EVLOG_FILE)) {
+	if (!do_logfile(EVLOG_REJECT, flags, &args, evlog))
+	    ret = false;
+    }
+
+    debug_return_bool(ret);
+}
+
+bool
+eventlog_alert(const struct eventlog *evlog, int flags,
+    struct timespec *alert_time, const char *reason, const char *errstr)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const int log_type = evl_conf->type;
+    struct eventlog_args args = { NULL };
+    bool ret = true;
+    debug_decl(eventlog_alert, SUDO_DEBUG_UTIL);
+
+    args.reason = reason;
+    args.errstr = errstr;
+    args.event_time = alert_time;
+
+    if (ISSET(log_type, EVLOG_SYSLOG)) {
+	if (!do_syslog(EVLOG_ALERT, flags, &args, evlog))
+	    ret = false;
+	CLR(flags, EVLOG_MAIL);
+    }
+    if (ISSET(log_type, EVLOG_FILE)) {
+	if (!do_logfile(EVLOG_ALERT, flags, &args, evlog))
+	    ret = false;
+    }
+
+    debug_return_bool(ret);
+}
+
+bool
+eventlog_mail(const struct eventlog *evlog, int flags,
+    struct timespec *event_time, const char *reason, const char *errstr,
+    char * const extra[])
+{
+    struct eventlog_args args = { NULL };
+    struct sudo_lbuf lbuf;
+    bool ret = false;
+    debug_decl(eventlog_mail, SUDO_DEBUG_UTIL);
+
+    args.reason = reason;
+    args.errstr = errstr;
+    args.event_time = event_time;
+
+    sudo_lbuf_init(&lbuf, NULL, 0, NULL, 0);
+    if (!new_logline(EVLOG_ALERT, flags, &args, evlog, &lbuf))
+	goto done;
+
+    if (extra != NULL) {
+	/* Each extra message is written on its own line. */
+	while (*extra != NULL) {
+	    sudo_lbuf_append(&lbuf, "\n");
+	    sudo_lbuf_append_esc(&lbuf, LBUF_ESC_CNTRL, "%s", *extra);
+	    if (sudo_lbuf_error(&lbuf)) {
+		sudo_debug_printf(
+		    SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+		    "unable to format mail message");
+		goto done;
+	    }
+	    extra++;
+	}
+    }
+
+    ret = send_mail(evlog, lbuf.buf);
+    if (!ret) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable to mail log line");
+    }
+
+done:
+    sudo_lbuf_destroy(&lbuf);
+    debug_return_bool(ret);
+}
+
+bool
+eventlog_exit(const struct eventlog *evlog, int flags)
+{
+    const struct eventlog_config *evl_conf = eventlog_getconf();
+    const int log_type = evl_conf->type;
+    struct eventlog_args args = { NULL };
+    struct timespec exit_time;
+    bool ret = true;
+    debug_decl(eventlog_exit, SUDO_DEBUG_UTIL);
+
+    if (sudo_timespecisset(&evlog->run_time)) {
+	sudo_timespecadd(&evlog->submit_time, &evlog->run_time, &exit_time);
+	args.event_time = &exit_time;
+    }
+
+    if (ISSET(log_type, EVLOG_SYSLOG)) {
+	if (!do_syslog(EVLOG_EXIT, flags, &args, evlog))
+	    ret = false;
+	CLR(flags, EVLOG_MAIL);
+    }
+    if (ISSET(log_type, EVLOG_FILE)) {
+	if (!do_logfile(EVLOG_EXIT, flags, &args, evlog))
+	    ret = false;
+    }
+
+    debug_return_bool(ret);
+}
diff --git a/lib/eventlog/eventlog_conf.c b/lib/eventlog/eventlog_conf.c
new file mode 100644
index 0000000..8ad0385
--- /dev/null
+++ b/lib/eventlog/eventlog_conf.c
@@ -0,0 +1,226 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1994-1996, 1998-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <locale.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "pathnames.h"
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_json.h"
+#include "sudo_queue.h"
+#include "sudo_util.h"
+
+static FILE *eventlog_stub_open_log(int type, const char *logfile);
+static void eventlog_stub_close_log(int type, FILE *fp);
+
+/* Eventlog config settings (default values). */
+static struct eventlog_config evl_conf = {
+    EVLOG_NONE,			/* type */
+    EVLOG_SUDO,			/* format */
+    LOG_NOTICE,			/* syslog_acceptpri */
+    LOG_ALERT,			/* syslog_rejectpri */
+    LOG_ALERT,			/* syslog_alertpri */
+    MAXSYSLOGLEN,		/* syslog_maxlen */
+    0,				/* file_maxlen */
+    ROOT_UID,			/* mailuid */
+    false,			/* omit_hostname */
+    _PATH_SUDO_LOGFILE,		/* logpath */
+    "%h %e %T",			/* time_fmt */
+#ifdef _PATH_SUDO_SENDMAIL
+    _PATH_SUDO_SENDMAIL,	/* mailerpath */
+#else
+    NULL,			/* mailerpath (disabled) */
+#endif
+    "-t",			/* mailerflags */
+    NULL,			/* mailfrom */
+    MAILTO,			/* mailto */
+    N_(MAILSUBJECT),		/* mailsub */
+    eventlog_stub_open_log,	/* open_log */
+    eventlog_stub_close_log	/* close_log */
+};
+
+static FILE *
+eventlog_stub_open_log(int type, const char *logfile)
+{
+    debug_decl(eventlog_stub_open_log, SUDO_DEBUG_UTIL);
+    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,
+	"open_log not set, using stub");
+    debug_return_ptr(NULL);
+}
+
+static void
+eventlog_stub_close_log(int type, FILE *fp)
+{
+    debug_decl(eventlog_stub_close_log, SUDO_DEBUG_UTIL);
+    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,
+	"close_log not set, using stub");
+    debug_return;
+}
+
+/*
+ * eventlog config setters.
+ */
+
+void
+eventlog_set_type(int type)
+{
+    evl_conf.type = type;
+}
+
+void
+eventlog_set_format(enum eventlog_format format)
+{
+    evl_conf.format = format;
+}
+
+void
+eventlog_set_syslog_acceptpri(int pri)
+{
+    evl_conf.syslog_acceptpri = pri;
+}
+
+void
+eventlog_set_syslog_rejectpri(int pri)
+{
+    evl_conf.syslog_rejectpri = pri;
+}
+
+void
+eventlog_set_syslog_alertpri(int pri)
+{
+    evl_conf.syslog_alertpri = pri;
+}
+
+void
+eventlog_set_syslog_maxlen(int len)
+{
+    evl_conf.syslog_maxlen = len;
+}
+
+void
+eventlog_set_file_maxlen(int len)
+{
+    evl_conf.file_maxlen = len;
+}
+
+void
+eventlog_set_mailuid(uid_t uid)
+{
+    evl_conf.mailuid = uid;
+}
+
+void
+eventlog_set_omit_hostname(bool omit_hostname)
+{
+    evl_conf.omit_hostname = omit_hostname;
+}
+
+void
+eventlog_set_logpath(const char *path)
+{
+    evl_conf.logpath = path;
+}
+
+void
+eventlog_set_time_fmt(const char *fmt)
+{
+    evl_conf.time_fmt = fmt;
+}
+
+void
+eventlog_set_mailerpath(const char *path)
+{
+    evl_conf.mailerpath = path;
+}
+
+void
+eventlog_set_mailerflags(const char *mflags)
+{
+    evl_conf.mailerflags = mflags;
+}
+
+void
+eventlog_set_mailfrom(const char *from_addr)
+{
+    evl_conf.mailfrom = from_addr;
+}
+
+void
+eventlog_set_mailto(const char *to_addr)
+{
+    evl_conf.mailto = to_addr;
+}
+
+void
+eventlog_set_mailsub(const char *subject)
+{
+    evl_conf.mailsub = subject;
+}
+
+void
+eventlog_set_open_log(FILE *(*fn)(int type, const char *))
+{
+    evl_conf.open_log = fn;
+}
+
+void
+eventlog_set_close_log(void (*fn)(int type, FILE *))
+{
+    evl_conf.close_log = fn;
+}
+
+/*
+ * get eventlog config.
+ */
+const struct eventlog_config *
+eventlog_getconf(void)
+{
+    return &evl_conf;
+}
diff --git a/lib/eventlog/eventlog_free.c b/lib/eventlog/eventlog_free.c
new file mode 100644
index 0000000..2ac23db
--- /dev/null
+++ b/lib/eventlog/eventlog_free.c
@@ -0,0 +1,74 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_util.h"
+
+/*
+ * Free the strings in a struct eventlog.
+ */
+void
+eventlog_free(struct eventlog *evlog)
+{
+    int i;
+    debug_decl(eventlog_free, SUDO_DEBUG_UTIL);
+
+    if (evlog != NULL) {
+	free(evlog->iolog_path);
+	free(evlog->command);
+	free(evlog->cwd);
+	free(evlog->runchroot);
+	free(evlog->runcwd);
+	free(evlog->rungroup);
+	free(evlog->runuser);
+	free(evlog->signal_name);
+	free(evlog->submithost);
+	free(evlog->submituser);
+	free(evlog->submitgroup);
+	free(evlog->ttyname);
+	if (evlog->argv != NULL) {
+	    for (i = 0; evlog->argv[i] != NULL; i++)
+		free(evlog->argv[i]);
+	    free(evlog->argv);
+	}
+	if (evlog->envp != NULL) {
+	    for (i = 0; evlog->envp[i] != NULL; i++)
+		free(evlog->envp[i]);
+	    free(evlog->envp);
+	}
+	free(evlog);
+    }
+
+    debug_return;
+}
diff --git a/lib/eventlog/logwrap.c b/lib/eventlog/logwrap.c
new file mode 100644
index 0000000..2e69948
--- /dev/null
+++ b/lib/eventlog/logwrap.c
@@ -0,0 +1,90 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011, 2014-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+#include "sudo_eventlog.h"
+
+size_t
+eventlog_writeln(FILE *fp, char *line, size_t linelen, size_t maxlen)
+{
+    const char *indent = "";
+    char *beg = line;
+    char *end;
+    int len;
+    size_t outlen = 0;
+    debug_decl(eventlog_writeln, SUDO_DEBUG_UTIL);
+
+    if (maxlen < sizeof(EVENTLOG_INDENT)) {
+	/* Maximum length too small, disable wrapping. */
+	outlen = fwrite(line, 1, linelen, fp);
+	if (outlen != linelen)
+	    debug_return_ssize_t(-1);
+	if (fputc('\n', fp) == EOF)
+	    debug_return_ssize_t(-1);
+	debug_return_int(outlen + 1);
+    }
+
+    /*
+     * Print out line with word wrap around maxlen characters.
+     */
+    while (linelen > maxlen) {
+	end = beg + maxlen;
+	while (end != beg && *end != ' ')
+	    end--;
+	if (beg == end) {
+	    /* Unable to find word break within maxlen, look beyond. */
+	    end = strchr(beg + maxlen, ' ');
+	    if (end == NULL)
+		break;	/* no word break */
+	}
+	len = fprintf(fp, "%s%.*s\n", indent, (int)(end - beg), beg);
+	if (len < 0)
+	    debug_return_ssize_t(-1);
+	outlen += len;
+	while (*end == ' ')
+	    end++;
+	linelen -= (end - beg);
+	beg = end;
+	if (indent[0] == '\0') {
+	    indent = EVENTLOG_INDENT;
+	    maxlen -= sizeof(EVENTLOG_INDENT) - 1;
+	}
+    }
+    /* Print remainder, if any. */
+    if (linelen) {
+	len = fprintf(fp, "%s%s\n", indent, beg);
+	if (len < 0)
+	    debug_return_ssize_t(-1);
+	outlen += len;
+    }
+
+    debug_return_size_t(outlen);
+}
diff --git a/lib/eventlog/regress/logwrap/check_wrap.c b/lib/eventlog/regress/logwrap/check_wrap.c
new file mode 100644
index 0000000..d144488
--- /dev/null
+++ b/lib/eventlog/regress/logwrap/check_wrap.c
@@ -0,0 +1,123 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2013 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+static void
+usage(void)
+{
+    fprintf(stderr, "usage: %s [-v] inputfile\n", getprogname());
+    exit(EXIT_FAILURE);
+}
+
+int
+main(int argc, char *argv[])
+{
+    int ch, lineno = 0, which = 0;
+    char *line, lines[2][2048];
+    const char *infile;
+    size_t len;
+    FILE *fp;
+
+    initprogname(argc > 0 ? argv[0] : "check_wrap");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignored */
+	    break;
+	default:
+	    usage();
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (argc != 1)
+	usage();
+    infile = argv[0];
+
+    fp = fopen(infile, "r");
+    if (fp == NULL)
+	sudo_fatalx("unable to open %s", infile);
+
+    /*
+     * Each test record consists of a log entry on one line and a list of
+     * line lengths to test it with on the next.  E.g.
+     *
+     * Jun 30 14:49:51 : millert : TTY=ttypn ; PWD=/usr/src/local/millert/hg/sudo/trunk/plugins/sudoers ; USER=root ; TSID=0004LD ; COMMAND=/usr/local/sbin/visudo
+     * 60-80,40
+     */
+    while ((line = fgets(lines[which], sizeof(lines[which]), fp)) != NULL) {
+	char *cp, *last;
+
+	len = strcspn(line, "\n");
+	line[len] = '\0';
+
+	/* If we read the 2nd line, parse list of line lengths and check. */
+	if (which) {
+	    lineno++;
+	    for (cp = strtok_r(lines[1], ",", &last); cp != NULL; cp = strtok_r(NULL, ",", &last)) {
+		const char *errstr;
+		char *dash;
+		size_t maxlen;
+
+		/* May be either a number or a range. */
+		dash = strchr(cp, '-');
+		if (dash != NULL) {
+		    *dash = '\0';
+		    len = sudo_strtonum(cp, 0, INT_MAX, &errstr);
+		    if (errstr == NULL)
+			maxlen = sudo_strtonum(dash + 1, 0, INT_MAX, &errstr);
+		} else {
+		    len = maxlen = sudo_strtonum(cp, 0, INT_MAX, &errstr);
+		}
+		if (errstr != NULL) {
+		    sudo_fatalx("%s: invalid length on line %d", infile, lineno);
+		}
+		while (len <= maxlen) {
+		    if (len == 0)
+			printf("# word wrap disabled\n");
+		    else
+			printf("# word wrap at %d characters\n", (int)len);
+		    eventlog_writeln(stdout, lines[0], strlen(lines[0]), len);
+		    len++;
+		}
+	    }
+	}
+	which = !which;
+    }
+
+    return EXIT_SUCCESS;
+}
diff --git a/lib/eventlog/regress/logwrap/check_wrap.in b/lib/eventlog/regress/logwrap/check_wrap.in
new file mode 100644
index 0000000..e8e7081
--- /dev/null
+++ b/lib/eventlog/regress/logwrap/check_wrap.in
@@ -0,0 +1,4 @@
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ; PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list users
+0,60-80,120,140
+Jun 26 18:00:06 : millert : TTY=ttypm ; PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+0,60-80,120,140
diff --git a/lib/eventlog/regress/logwrap/check_wrap.out.ok b/lib/eventlog/regress/logwrap/check_wrap.out.ok
new file mode 100644
index 0000000..55e9da8
--- /dev/null
+++ b/lib/eventlog/regress/logwrap/check_wrap.out.ok
@@ -0,0 +1,179 @@
+# word wrap disabled
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ; PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 60 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1
+    ; PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 61 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1
+    ; PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 62 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 63 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 64 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 65 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 66 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 67 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool
+    list users
+# word wrap at 68 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool
+    list users
+# word wrap at 69 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool
+    list users
+# word wrap at 70 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool
+    list users
+# word wrap at 71 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool
+    list users
+# word wrap at 72 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list
+    users
+# word wrap at 73 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list
+    users
+# word wrap at 74 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list
+    users
+# word wrap at 75 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list
+    users
+# word wrap at 76 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list
+    users
+# word wrap at 77 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list
+    users
+# word wrap at 78 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 79 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 80 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ;
+    PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 120 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ; PWD=/home/tu2sp3-a ; USER=root ;
+    COMMAND=/opt/quest/bin/vastool list users
+# word wrap at 140 characters
+Jul 11 11:30:17 : tu2sp3-a : command not allowed ; TTY=pts/1 ; PWD=/home/tu2sp3-a ; USER=root ; COMMAND=/opt/quest/bin/vastool list users
+# word wrap disabled
+Jun 26 18:00:06 : millert : TTY=ttypm ; PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 60 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 61 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 62 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 63 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 64 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 65 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 66 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 67 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 68 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 69 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ;
+    TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 70 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT
+    ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 71 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT
+    ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 72 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 73 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 74 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 75 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 76 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 77 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 78 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 79 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ;
+    PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 80 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ; PWD=/usr/src/local/millert/hg/sudo/build
+    ; USER=root ; TSID=0004KT ; COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 120 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ; PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ;
+    COMMAND=/bin/rm /root/.bash_profile
+# word wrap at 140 characters
+Jun 26 18:00:06 : millert : TTY=ttypm ; PWD=/usr/src/local/millert/hg/sudo/build ; USER=root ; TSID=0004KT ; COMMAND=/bin/rm
+    /root/.bash_profile
diff --git a/lib/fuzzstub/Makefile.in b/lib/fuzzstub/Makefile.in
new file mode 100644
index 0000000..8c472b5
--- /dev/null
+++ b/lib/fuzzstub/Makefile.in
@@ -0,0 +1,176 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+devdir = @devdir@
+scriptdir = $(top_srcdir)/scripts
+incdir = $(top_srcdir)/include
+
+# Compiler & tools to use
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+
+# C preprocessor flags
+CPPFLAGS = -I$(incdir) -I$(top_builddir) -I$(srcdir) -I$(top_srcdir) @CPPFLAGS@
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+
+# Flags to pass to the link stage
+LDFLAGS = @LDFLAGS@
+
+# Flags to pass to libtool
+LTFLAGS = @LT_STATIC@
+
+# Libraries
+LT_LIBS =
+LIBS = $(LT_LIBS)
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# cppcheck options, usually set in the top-level Makefile
+CPPCHECK_OPTS = -q --enable=warning,performance,portability --suppress=constStatement --suppress=compareBoolExpressionWithInt --error-exitcode=1 --inline-suppr -Dva_copy=va_copy -U__cplusplus -UQUAD_MAX -UQUAD_MIN -UUQUAD_MAX -U_POSIX_HOST_NAME_MAX -U_POSIX_PATH_MAX -U__NBBY -DNSIG=64
+
+# splint options, usually set in the top-level Makefile
+SPLINT_OPTS = -D__restrict= -checks
+
+# PVS-studio options
+PVS_CFG = $(top_srcdir)/PVS-Studio.cfg
+PVS_IGNORE = 'V707,V011,V002,V536'
+PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
+
+# Set to non-empty for development mode
+DEVEL = @DEVEL@
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+LIBFUZZSTUB_OBJS = fuzzstub.lo
+
+IOBJS = $(LIBFUZZSTUB_OBJS:.lo=.i)
+
+POBJS = $(IOBJS:.i=.plog)
+
+all: libsudo_fuzzstub.la
+
+depend:
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/fuzzstub/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/fuzzstub/Makefile
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/fuzzstub/Makefile
+
+.SUFFIXES: .c .h .i .lo .plog
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+.c.i:
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+
+.i.plog:
+	ifile=$<; rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $${ifile%i}c --i-file $< --output-file $@
+
+libsudo_fuzzstub.la: $(LIBFUZZSTUB_OBJS)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LIBFUZZSTUB_OBJS) $(LT_LIBS)
+
+pre-install:
+
+install:
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer:
+
+uninstall:
+
+splint:
+	splint $(SPLINT_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+cppcheck:
+	cppcheck $(CPPCHECK_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+pvs-log-files: $(POBJS)
+
+pvs-studio: $(POBJS)
+	plog-converter $(PVS_LOG_OPTS) $(POBJS)
+
+fuzz:
+
+check-fuzzer:
+
+check: check-fuzzer
+
+check-verbose: check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f *.lo *.o *.la
+	-rm -f *.i *.plog stamp-* core *.core core.*
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile .libs
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean
+
+# Autogenerated dependencies, do not modify
+fuzzstub.lo: $(srcdir)/fuzzstub.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/fuzzstub.c
+fuzzstub.i: $(srcdir)/fuzzstub.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fuzzstub.plog: fuzzstub.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/fuzzstub.c --i-file $< --output-file $@
diff --git a/lib/fuzzstub/fuzzstub.c b/lib/fuzzstub/fuzzstub.c
new file mode 100644
index 0000000..bc28cad
--- /dev/null
+++ b/lib/fuzzstub/fuzzstub.c
@@ -0,0 +1,133 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Simple driver for fuzzers built for LLVM libfuzzer.
+ * This stub library allows fuzz targets to be built and run without
+ * libfuzzer.  No actual fuzzing will occur but the provided inputs
+ * will be tested.
+ */
+int
+main(int argc, char *argv[])
+{
+    struct timespec start_time, stop_time;
+    size_t filesize, bufsize = 0;
+    ssize_t nread;
+    struct stat sb;
+    uint8_t *buf = NULL;
+    int fd, i, errors = 0;
+    int verbose = 0;
+    long ms;
+
+    /* Test provided input files. */
+    for (i = 1; i < argc; i++) {
+	const char *arg = argv[i];
+	if (*arg == '-') {
+	    if (strncmp(arg, "-verbosity=", sizeof("-verbosity=") - 1) == 0) {
+		verbose = atoi(arg + sizeof("-verbosity=") - 1);
+	    }
+	    continue;
+	}
+	fd = open(arg, O_RDONLY);
+	if (fd == -1 || fstat(fd, &sb) != 0) {
+	    fprintf(stderr, "open %s: %s\n", arg, strerror(errno));
+	    if (fd != -1)
+		close(fd);
+	    errors++;
+	    continue;
+	}
+#ifndef __LP64__
+	if (sizeof(sb.st_size) > sizeof(size_t) && sb.st_size > SSIZE_MAX) {
+	    errno = E2BIG;
+	    fprintf(stderr, "%s: %s\n", arg, strerror(errno));
+	    close(fd);
+	    errors++;
+	    continue;
+	}
+#endif
+	filesize = sb.st_size;
+	if (bufsize < filesize) {
+	    void *tmp = realloc(buf, filesize);
+	    if (tmp == NULL) {
+		fprintf(stderr, "realloc: %s\n", strerror(errno));
+		close(fd);
+		errors++;
+		continue;
+	    }
+	    buf = tmp;
+	    bufsize = filesize;
+	}
+	nread = read(fd, buf, filesize);
+	if ((size_t)nread != filesize) {
+	    if (nread == -1)
+		fprintf(stderr, "read %s: %s\n", arg, strerror(errno));
+	    else
+		fprintf(stderr, "read %s: short read\n", arg);
+	    close(fd);
+	    errors++;
+	    continue;
+	}
+	close(fd);
+
+	/* NOTE: doesn't support LLVMFuzzerInitialize() (but we don't use it) */
+	if (verbose > 0) {
+	    fprintf(stderr, "Running: %s\n", arg);
+	    sudo_gettime_mono(&start_time);
+	}
+	LLVMFuzzerTestOneInput(buf, nread);
+	if (verbose > 0) {
+	    sudo_gettime_mono(&stop_time);
+	    sudo_timespecsub(&stop_time, &start_time, &stop_time);
+	    ms = (stop_time.tv_sec * 1000) + (stop_time.tv_nsec / 1000000);
+	    fprintf(stderr, "Executed %s in %ld ms\n", arg, ms);
+	}
+    }
+    free(buf);
+
+    return errors;
+}
diff --git a/lib/iolog/Makefile.in b/lib/iolog/Makefile.in
new file mode 100644
index 0000000..61bc058
--- /dev/null
+++ b/lib/iolog/Makefile.in
@@ -0,0 +1,851 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2011-2022 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+devdir = @devdir@
+incdir = $(top_srcdir)/include
+scriptdir = $(top_srcdir)/scripts
+cross_compiling = @CROSS_COMPILING@
+
+# Compiler & tools to use
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+SHA1SUM = @SHA1SUM@
+EGREP = @EGREP@
+SED = @SED@
+
+# Libraries
+LT_LIBS = $(top_builddir)/lib/util/libsudo_util.la
+LIBS = @LIBS@ @ZLIB@ $(LT_LIBS)
+
+# C preprocessor flags
+CPPFLAGS = -I$(incdir) -I$(top_builddir) -I$(srcdir) @CPPFLAGS@
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+
+# Flags to pass to the link stage
+LDFLAGS = @LDFLAGS@
+
+# Flags to pass to libtool
+LTFLAGS = @LT_STATIC@
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# cppcheck options, usually set in the top-level Makefile
+CPPCHECK_OPTS = -q --enable=warning,performance,portability --suppress=constStatement --suppress=compareBoolExpressionWithInt --error-exitcode=1 --inline-suppr -Dva_copy=va_copy -U__cplusplus -UQUAD_MAX -UQUAD_MIN -UUQUAD_MAX -U_POSIX_HOST_NAME_MAX -U_POSIX_PATH_MAX -U__NBBY -DNSIG=64
+
+# splint options, usually set in the top-level Makefile
+SPLINT_OPTS = -D__restrict= -checks
+
+# PVS-studio options
+PVS_CFG = $(top_srcdir)/PVS-Studio.cfg
+PVS_IGNORE = 'V707,V011,V002,V536'
+PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
+
+# Regression tests
+TEST_PROGS = check_iolog_filter check_iolog_json check_iolog_mkpath \
+	     check_iolog_path check_iolog_timing host_port_test
+TEST_LIBS = @LIBS@
+TEST_LDFLAGS = @LDFLAGS@
+TEST_VERBOSE =
+
+# Fuzzers
+LIBFUZZSTUB = $(top_builddir)/lib/fuzzstub/libsudo_fuzzstub.la
+LIB_FUZZING_ENGINE = @FUZZ_ENGINE@
+FUZZ_PROGS = fuzz_iolog_json fuzz_iolog_legacy fuzz_iolog_timing
+FUZZ_SEED_CORPUS = ${FUZZ_PROGS:=_seed_corpus.zip}
+FUZZ_LIBS = $(LIB_FUZZING_ENGINE) @LIBS@ \
+	    $(top_builddir)/lib/eventlog/libsudo_eventlog.la
+FUZZ_LDFLAGS = @LDFLAGS@
+FUZZ_MAX_LEN = 4096
+FUZZ_RUNS = 8192
+FUZZ_VERBOSE =
+
+# Set to non-empty for development mode
+DEVEL = @DEVEL@
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+LIBIOLOG_OBJS = host_port.lo hostcheck.lo iolog_clearerr.lo iolog_close.lo \
+		iolog_conf.lo iolog_eof.lo iolog_filter.lo iolog_flush.lo \
+		iolog_gets.lo iolog_json.lo iolog_legacy.lo iolog_loginfo.lo \
+		iolog_mkdirs.lo iolog_mkdtemp.lo iolog_mkpath.lo \
+		iolog_nextid.lo iolog_open.lo iolog_openat.lo iolog_path.lo \
+		iolog_read.lo iolog_seek.lo iolog_swapids.lo iolog_timing.lo \
+		iolog_util.lo iolog_write.lo
+
+IOBJS = $(LIBIOLOG_OBJS:.lo=.i)
+
+POBJS = $(IOBJS:.i=.plog)
+
+CHECK_IOLOG_MKPATH_OBJS = check_iolog_mkpath.lo
+
+CHECK_IOLOG_PATH_OBJS = check_iolog_path.lo
+
+CHECK_IOLOG_TIMING_OBJS = check_iolog_timing.lo
+
+CHECK_IOLOG_FILTER_OBJS = check_iolog_filter.lo
+
+CHECK_IOLOG_JSON_OBJS = check_iolog_json.lo
+
+HOST_PORT_TEST_OBJS = host_port_test.lo
+
+FUZZ_IOLOG_JSON_OBJS = fuzz_iolog_json.lo
+
+FUZZ_IOLOG_JSON_CORPUS = $(srcdir)/regress/corpus/seed/log_json/*.json
+
+FUZZ_IOLOG_LEGACY_OBJS = fuzz_iolog_legacy.lo
+
+FUZZ_IOLOG_LEGACY_CORPUS = $(srcdir)/regress/corpus/seed/log_legacy/*.log
+
+FUZZ_IOLOG_TIMING_OBJS = fuzz_iolog_timing.lo
+
+FUZZ_IOLOG_TIMING_CORPUS = $(srcdir)/regress/corpus/seed/timing/timing.*
+
+all: libsudo_iolog.la
+
+depend:
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/iolog/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/iolog/Makefile
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/iolog/Makefile
+
+.SUFFIXES: .c .h .i .lo .plog
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+.c.i:
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+
+.i.plog:
+	ifile=$<; rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $${ifile%i}c --i-file $< --output-file $@
+
+libsudo_iolog.la: $(LIBIOLOG_OBJS) $(LT_LIBS)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LIBIOLOG_OBJS) $(LT_LIBS) @ZLIB@ @NET_LIBS@
+
+check_iolog_path: $(CHECK_IOLOG_PATH_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_IOLOG_PATH_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+check_iolog_mkpath: $(CHECK_IOLOG_MKPATH_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_IOLOG_MKPATH_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+check_iolog_timing: $(CHECK_IOLOG_TIMING_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_IOLOG_TIMING_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+check_iolog_filter: $(CHECK_IOLOG_FILTER_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_IOLOG_FILTER_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+check_iolog_json: $(CHECK_IOLOG_JSON_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_IOLOG_JSON_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+host_port_test: $(HOST_PORT_TEST_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(HOST_PORT_TEST_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+fuzz_iolog_json: $(FUZZ_IOLOG_JSON_OBJS) $(LIBFUZZSTUB) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link @FUZZ_LD@ -o $@ $(FUZZ_IOLOG_JSON_OBJS) $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(FUZZ_LDFLAGS) $(FUZZ_LIBS) libsudo_iolog.la
+
+fuzz_iolog_legacy: $(FUZZ_IOLOG_LEGACY_OBJS) $(LIBFUZZSTUB) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link @FUZZ_LD@ -o $@ $(FUZZ_IOLOG_LEGACY_OBJS) $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(FUZZ_LDFLAGS) $(FUZZ_LIBS) libsudo_iolog.la
+
+fuzz_iolog_timing: $(FUZZ_IOLOG_TIMING_OBJS) $(LIBFUZZSTUB) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link @FUZZ_LD@ -o $@ $(FUZZ_IOLOG_TIMING_OBJS) $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(FUZZ_LDFLAGS) $(FUZZ_LIBS) libsudo_iolog.la
+
+fuzz_iolog_json_seed_corpus.zip:
+	tdir=fuzz_iolog_json.$$$$; \
+	mkdir $$tdir; \
+	for f in $(FUZZ_IOLOG_JSON_CORPUS); do \
+	    cp $$f $$tdir/`$(SHA1SUM) $$f | $(SED) -e 's/^.*= *//' -e 's/ .*//'`; \
+	done; \
+	zip -j $@ $$tdir/*; \
+	rm -rf $$tdir
+
+run-fuzz_iolog_json: fuzz_iolog_json
+	l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	test -n "$$l" || l="C"; \
+	LC_ALL="$$l"; export LC_ALL; \
+	unset LANG || LANG=; \
+	unset LANGUAGE || LANGUAGE=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/iolog_json; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_IOLOG_JSON_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_iolog_json -dict=$(srcdir)/regress/fuzz/fuzz_iolog_json.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $(FUZZ_VERBOSE) $$corpus
+
+fuzz_iolog_legacy_seed_corpus.zip:
+	tdir=fuzz_iolog_legacy.$$$$; \
+	mkdir $$tdir; \
+	for f in $(FUZZ_IOLOG_LEGACY_CORPUS); do \
+	    cp $$f $$tdir/`$(SHA1SUM) $$f | $(SED) -e 's/^.*= *//' -e 's/ .*//'`; \
+	done; \
+	zip -j $@ $$tdir/*; \
+	rm -rf $$tdir
+
+run-fuzz_iolog_legacy: fuzz_iolog_legacy
+	l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	test -n "$$l" || l="C"; \
+	LC_ALL="$$l"; export LC_ALL; \
+	unset LANG || LANG=; \
+	unset LANGUAGE || LANGUAGE=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/iolog_legacy; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_IOLOG_LEGACY_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_iolog_legacy -dict=$(srcdir)/regress/fuzz/fuzz_iolog_legacy.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $(FUZZ_VERBOSE) $$corpus
+
+fuzz_iolog_timing_seed_corpus.zip:
+	tdir=fuzz_iolog_timing.$$$$; \
+	mkdir $$tdir; \
+	for f in $(FUZZ_IOLOG_TIMING_CORPUS); do \
+	    cp $$f $$tdir/`$(SHA1SUM) $$f | $(SED) -e 's/^.*= *//' -e 's/ .*//'`; \
+	done; \
+	zip -j $@ $$tdir/*; \
+	rm -rf $$tdir
+
+run-fuzz_iolog_timing: fuzz_iolog_timing
+	l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	test -n "$$l" || l="C"; \
+	LC_ALL="$$l"; export LC_ALL; \
+	unset LANG || LANG=; \
+	unset LANGUAGE || LANGUAGE=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/iolog_timing; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_IOLOG_TIMING_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_iolog_timing -dict=$(srcdir)/regress/fuzz/fuzz_iolog_timing.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $(FUZZ_VERBOSE) $$corpus
+
+pre-install:
+
+install:
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer: $(FUZZ_PROGS) $(FUZZ_SEED_CORPUS)
+	@if test X"$(FUZZ_DESTDIR)" = X""; then \
+	    echo "must set FUZZ_DESTDIR for install-fuzzer target"; \
+	else \
+	    cp $(FUZZ_PROGS) $(FUZZ_SEED_CORPUS) $(FUZZ_DESTDIR); \
+	    cp $(srcdir)/regress/fuzz/*.dict $(FUZZ_DESTDIR); \
+	fi
+
+uninstall:
+
+splint:
+	splint $(SPLINT_OPTS) -I$(incdir) -I$(top_builddir) $(srcdir)/*.c
+
+cppcheck:
+	cppcheck $(CPPCHECK_OPTS) -I$(incdir) -I$(top_builddir) $(srcdir)/*.c
+
+pvs-log-files: $(POBJS)
+
+pvs-studio: $(POBJS)
+	plog-converter $(PVS_LOG_OPTS) $(POBJS)
+
+fuzz: run-fuzz_iolog_json run-fuzz_iolog_legacy run-fuzz_iolog_timing
+
+check-fuzzer: $(FUZZ_PROGS)
+	@if test X"$(cross_compiling)" != X"yes"; then \
+	    l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	    test -n "$$l" || l="C"; \
+	    LC_ALL="$$l"; export LC_ALL; \
+	    unset LANG || LANG=; \
+	    unset LANGUAGE || LANGUAGE=; \
+	    MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	    MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	    echo "fuzz_iolog_legacy: verifying corpus"; \
+	    ./fuzz_iolog_legacy $(FUZZ_VERBOSE) $(FUZZ_IOLOG_LEGACY_CORPUS); \
+	    echo "fuzz_iolog_json: verifying corpus"; \
+	    ./fuzz_iolog_json $(FUZZ_VERBOSE) $(FUZZ_IOLOG_JSON_CORPUS); \
+	    echo "fuzz_iolog_timing: verifying corpus"; \
+	    ./fuzz_iolog_timing $(FUZZ_VERBOSE) $(FUZZ_IOLOG_TIMING_CORPUS); \
+	fi
+
+check: $(TEST_PROGS) check-fuzzer
+	@if test X"$(cross_compiling)" != X"yes"; then \
+	    l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	    test -n "$$l" || l="C"; \
+	    LC_ALL="$$l"; export LC_ALL; \
+	    unset LANG || LANG=; \
+	    unset LANGUAGE || LANGUAGE=; \
+	    MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	    MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	    rval=0; \
+	    ./check_iolog_filter $(srcdir)/regress/iolog_filter/test[1-9]* || rval=`expr $$rval + $$?`; \
+	    ./check_iolog_json $(srcdir)/regress/iolog_json/*.in || rval=`expr $$rval + $$?`; \
+	    ./check_iolog_path $(srcdir)/regress/iolog_path/data || rval=`expr $$rval + $$?`; \
+	    ./check_iolog_mkpath || rval=`expr $$rval + $$?`; \
+	    ./check_iolog_timing || rval=`expr $$rval + $$?`; \
+	    ./host_port_test || rval=`expr $$rval + $$?`; \
+	    exit $$rval; \
+	fi
+
+check-verbose:
+	exec $(MAKE) $(MFLAGS) TEST_VERBOSE=-v FUZZ_VERBOSE=-verbosity=1 check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f $(TEST_PROGS) $(FUZZ_PROGS) \
+	    *.lo *.o *.la
+	-rm -f *.i *.plog stamp-* core *.core core.* regress/*/*.out \
+	    regress/*/*.err regress/corpus/iolog_json \
+	    regress/corpus/iolog_legacy regress/corpus/iolog_timing
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile .libs
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean \
+	$(FUZZ_SEED_CORPUS) run-fuzz_iolog_json run-fuzz_iolog_legacy \
+	run-fuzz_iolog_timing
+
+# Autogenerated dependencies, do not modify
+check_iolog_filter.lo: $(srcdir)/regress/iolog_filter/check_iolog_filter.c \
+                       $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                       $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                       $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/iolog_filter/check_iolog_filter.c
+check_iolog_filter.i: $(srcdir)/regress/iolog_filter/check_iolog_filter.c \
+                       $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                       $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                       $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+check_iolog_filter.plog: check_iolog_filter.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/iolog_filter/check_iolog_filter.c --i-file $< --output-file $@
+check_iolog_json.lo: $(srcdir)/regress/iolog_json/check_iolog_json.c \
+                     $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                     $(incdir)/sudo_fatal.h $(incdir)/sudo_json.h \
+                     $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                     $(incdir)/sudo_util.h $(srcdir)/iolog_json.h \
+                     $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/iolog_json/check_iolog_json.c
+check_iolog_json.i: $(srcdir)/regress/iolog_json/check_iolog_json.c \
+                     $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                     $(incdir)/sudo_fatal.h $(incdir)/sudo_json.h \
+                     $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                     $(incdir)/sudo_util.h $(srcdir)/iolog_json.h \
+                     $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+check_iolog_json.plog: check_iolog_json.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/iolog_json/check_iolog_json.c --i-file $< --output-file $@
+check_iolog_mkpath.lo: $(srcdir)/regress/iolog_mkpath/check_iolog_mkpath.c \
+                       $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                       $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                       $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/iolog_mkpath/check_iolog_mkpath.c
+check_iolog_mkpath.i: $(srcdir)/regress/iolog_mkpath/check_iolog_mkpath.c \
+                       $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                       $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                       $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+check_iolog_mkpath.plog: check_iolog_mkpath.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/iolog_mkpath/check_iolog_mkpath.c --i-file $< --output-file $@
+check_iolog_path.lo: $(srcdir)/regress/iolog_path/check_iolog_path.c \
+                     $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                     $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                     $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                     $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/iolog_path/check_iolog_path.c
+check_iolog_path.i: $(srcdir)/regress/iolog_path/check_iolog_path.c \
+                     $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                     $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                     $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                     $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+check_iolog_path.plog: check_iolog_path.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/iolog_path/check_iolog_path.c --i-file $< --output-file $@
+check_iolog_timing.lo: $(srcdir)/regress/iolog_timing/check_iolog_timing.c \
+                       $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                       $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                       $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/iolog_timing/check_iolog_timing.c
+check_iolog_timing.i: $(srcdir)/regress/iolog_timing/check_iolog_timing.c \
+                       $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                       $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                       $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+check_iolog_timing.plog: check_iolog_timing.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/iolog_timing/check_iolog_timing.c --i-file $< --output-file $@
+fuzz_iolog_json.lo: $(srcdir)/regress/fuzz/fuzz_iolog_json.c \
+                    $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                    $(incdir)/sudo_debug.h $(incdir)/sudo_eventlog.h \
+                    $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                    $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+                    $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                    $(srcdir)/iolog_json.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/fuzz/fuzz_iolog_json.c
+fuzz_iolog_json.i: $(srcdir)/regress/fuzz/fuzz_iolog_json.c \
+                    $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                    $(incdir)/sudo_debug.h $(incdir)/sudo_eventlog.h \
+                    $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                    $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+                    $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                    $(srcdir)/iolog_json.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fuzz_iolog_json.plog: fuzz_iolog_json.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/fuzz/fuzz_iolog_json.c --i-file $< --output-file $@
+fuzz_iolog_legacy.lo: $(srcdir)/regress/fuzz/fuzz_iolog_legacy.c \
+                      $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                      $(incdir)/sudo_debug.h $(incdir)/sudo_eventlog.h \
+                      $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                      $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                      $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/fuzz/fuzz_iolog_legacy.c
+fuzz_iolog_legacy.i: $(srcdir)/regress/fuzz/fuzz_iolog_legacy.c \
+                      $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                      $(incdir)/sudo_debug.h $(incdir)/sudo_eventlog.h \
+                      $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                      $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                      $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fuzz_iolog_legacy.plog: fuzz_iolog_legacy.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/fuzz/fuzz_iolog_legacy.c --i-file $< --output-file $@
+fuzz_iolog_timing.lo: $(srcdir)/regress/fuzz/fuzz_iolog_timing.c \
+                      $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                      $(incdir)/sudo_debug.h $(incdir)/sudo_eventlog.h \
+                      $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                      $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                      $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/fuzz/fuzz_iolog_timing.c
+fuzz_iolog_timing.i: $(srcdir)/regress/fuzz/fuzz_iolog_timing.c \
+                      $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                      $(incdir)/sudo_debug.h $(incdir)/sudo_eventlog.h \
+                      $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                      $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                      $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fuzz_iolog_timing.plog: fuzz_iolog_timing.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/fuzz/fuzz_iolog_timing.c --i-file $< --output-file $@
+host_port.lo: $(srcdir)/host_port.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/host_port.c
+host_port.i: $(srcdir)/host_port.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+host_port.plog: host_port.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/host_port.c --i-file $< --output-file $@
+host_port_test.lo: $(srcdir)/regress/host_port/host_port_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                   $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                   $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/host_port/host_port_test.c
+host_port_test.i: $(srcdir)/regress/host_port/host_port_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_iolog.h \
+                   $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+                   $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+host_port_test.plog: host_port_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/host_port/host_port_test.c --i-file $< --output-file $@
+hostcheck.lo: $(srcdir)/hostcheck.c $(incdir)/compat/stdbool.h \
+              $(incdir)/hostcheck.h $(incdir)/sudo_compat.h \
+              $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/hostcheck.c
+hostcheck.i: $(srcdir)/hostcheck.c $(incdir)/compat/stdbool.h \
+              $(incdir)/hostcheck.h $(incdir)/sudo_compat.h \
+              $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+hostcheck.plog: hostcheck.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/hostcheck.c --i-file $< --output-file $@
+iolog_clearerr.lo: $(srcdir)/iolog_clearerr.c $(incdir)/compat/stdbool.h \
+                   $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                   $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                   $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_clearerr.c
+iolog_clearerr.i: $(srcdir)/iolog_clearerr.c $(incdir)/compat/stdbool.h \
+                   $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                   $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                   $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_clearerr.plog: iolog_clearerr.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_clearerr.c --i-file $< --output-file $@
+iolog_close.lo: $(srcdir)/iolog_close.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_close.c
+iolog_close.i: $(srcdir)/iolog_close.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_close.plog: iolog_close.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_close.c --i-file $< --output-file $@
+iolog_conf.lo: $(srcdir)/iolog_conf.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(incdir)/sudo_util.h $(top_builddir)/config.h \
+               $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_conf.c
+iolog_conf.i: $(srcdir)/iolog_conf.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(incdir)/sudo_util.h $(top_builddir)/config.h \
+               $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_conf.plog: iolog_conf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_conf.c --i-file $< --output-file $@
+iolog_eof.lo: $(srcdir)/iolog_eof.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_eof.c
+iolog_eof.i: $(srcdir)/iolog_eof.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_eof.plog: iolog_eof.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_eof.c --i-file $< --output-file $@
+iolog_filter.lo: $(srcdir)/iolog_filter.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_filter.c
+iolog_filter.i: $(srcdir)/iolog_filter.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_filter.plog: iolog_filter.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_filter.c --i-file $< --output-file $@
+iolog_flush.lo: $(srcdir)/iolog_flush.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_flush.c
+iolog_flush.i: $(srcdir)/iolog_flush.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_flush.plog: iolog_flush.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_flush.c --i-file $< --output-file $@
+iolog_gets.lo: $(srcdir)/iolog_gets.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_gets.c
+iolog_gets.i: $(srcdir)/iolog_gets.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_gets.plog: iolog_gets.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_gets.c --i-file $< --output-file $@
+iolog_json.lo: $(srcdir)/iolog_json.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+               $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+               $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+               $(srcdir)/iolog_json.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_json.c
+iolog_json.i: $(srcdir)/iolog_json.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+               $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+               $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+               $(srcdir)/iolog_json.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_json.plog: iolog_json.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_json.c --i-file $< --output-file $@
+iolog_legacy.lo: $(srcdir)/iolog_legacy.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                 $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+                 $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_legacy.c
+iolog_legacy.i: $(srcdir)/iolog_legacy.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                 $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+                 $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_legacy.plog: iolog_legacy.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_legacy.c --i-file $< --output-file $@
+iolog_loginfo.lo: $(srcdir)/iolog_loginfo.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                  $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+                  $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                  $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_loginfo.c
+iolog_loginfo.i: $(srcdir)/iolog_loginfo.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                  $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+                  $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                  $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_loginfo.plog: iolog_loginfo.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_loginfo.c --i-file $< --output-file $@
+iolog_mkdirs.lo: $(srcdir)/iolog_mkdirs.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_mkdirs.c
+iolog_mkdirs.i: $(srcdir)/iolog_mkdirs.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_mkdirs.plog: iolog_mkdirs.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_mkdirs.c --i-file $< --output-file $@
+iolog_mkdtemp.lo: $(srcdir)/iolog_mkdtemp.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                  $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                  $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_mkdtemp.c
+iolog_mkdtemp.i: $(srcdir)/iolog_mkdtemp.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                  $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                  $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_mkdtemp.plog: iolog_mkdtemp.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_mkdtemp.c --i-file $< --output-file $@
+iolog_mkpath.lo: $(srcdir)/iolog_mkpath.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                 $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_mkpath.c
+iolog_mkpath.i: $(srcdir)/iolog_mkpath.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                 $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_mkpath.plog: iolog_mkpath.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_mkpath.c --i-file $< --output-file $@
+iolog_nextid.lo: $(srcdir)/iolog_nextid.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_nextid.c
+iolog_nextid.i: $(srcdir)/iolog_nextid.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_nextid.plog: iolog_nextid.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_nextid.c --i-file $< --output-file $@
+iolog_open.lo: $(srcdir)/iolog_open.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_open.c
+iolog_open.i: $(srcdir)/iolog_open.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_open.plog: iolog_open.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_open.c --i-file $< --output-file $@
+iolog_openat.lo: $(srcdir)/iolog_openat.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_openat.c
+iolog_openat.i: $(srcdir)/iolog_openat.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                 $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                 $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_openat.plog: iolog_openat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_openat.c --i-file $< --output-file $@
+iolog_path.lo: $(srcdir)/iolog_path.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+               $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_path.c
+iolog_path.i: $(srcdir)/iolog_path.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+               $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_path.plog: iolog_path.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_path.c --i-file $< --output-file $@
+iolog_read.lo: $(srcdir)/iolog_read.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_read.c
+iolog_read.i: $(srcdir)/iolog_read.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_read.plog: iolog_read.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_read.c --i-file $< --output-file $@
+iolog_seek.lo: $(srcdir)/iolog_seek.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_seek.c
+iolog_seek.i: $(srcdir)/iolog_seek.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_seek.plog: iolog_seek.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_seek.c --i-file $< --output-file $@
+iolog_swapids.lo: $(srcdir)/iolog_swapids.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                  $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_queue.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_swapids.c
+iolog_swapids.i: $(srcdir)/iolog_swapids.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                  $(incdir)/sudo_iolog.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_queue.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_swapids.plog: iolog_swapids.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_swapids.c --i-file $< --output-file $@
+iolog_timing.lo: $(srcdir)/iolog_timing.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                 $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+                 $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_timing.c
+iolog_timing.i: $(srcdir)/iolog_timing.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_eventlog.h $(incdir)/sudo_fatal.h \
+                 $(incdir)/sudo_gettext.h $(incdir)/sudo_iolog.h \
+                 $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_timing.plog: iolog_timing.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_timing.c --i-file $< --output-file $@
+iolog_util.lo: $(srcdir)/iolog_util.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_util.c
+iolog_util.i: $(srcdir)/iolog_util.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_util.plog: iolog_util.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_util.c --i-file $< --output-file $@
+iolog_write.lo: $(srcdir)/iolog_write.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/iolog_write.c
+iolog_write.i: $(srcdir)/iolog_write.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_iolog.h $(incdir)/sudo_queue.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+iolog_write.plog: iolog_write.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/iolog_write.c --i-file $< --output-file $@
diff --git a/lib/iolog/host_port.c b/lib/iolog/host_port.c
new file mode 100644
index 0000000..7fcc0b0
--- /dev/null
+++ b/lib/iolog/host_port.c
@@ -0,0 +1,109 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+#include "sudo_iolog.h"
+
+/*
+ * Parse a string in the form host[:port] where host can also be
+ * an IPv4 address or an IPv6 address in square brackets.
+ * Fills in hostp and portp which may point within str, which is modified.
+ */
+bool
+iolog_parse_host_port(char *str, char **hostp, char **portp, bool *tlsp,
+     const char *defport, const char *defport_tls)
+{
+    char *flags, *port, *host = str;
+    bool ret = false;
+    bool tls = false;
+    debug_decl(iolog_parse_host_port, SUDO_DEBUG_UTIL);
+
+    /* Check for IPv6 address like [::0] followed by optional port */
+    if (*host == '[') {
+	host++;
+	port = strchr(host, ']');
+	if (port == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"invalid IPv6 address %s", str);
+	    goto done;
+	}
+	*port++ = '\0';
+        switch (*port) {
+        case ':':
+            port++;
+            break;
+        case '\0':
+            port = NULL;		/* no port specified */
+            break;
+        case '(':
+            /* flag, handled below */
+            break;
+        default:
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"invalid IPv6 address %s", str);
+	    goto done;
+	}
+    } else {
+	port = strrchr(host, ':');
+	if (port != NULL)
+	    *port++ = '\0';
+    }
+
+    /* Check for optional tls flag at the end. */
+    flags = strchr(port ? port : host, '(');
+    if (flags != NULL) {
+	if (strcasecmp(flags, "(tls)") == 0)
+	    tls = true;
+	*flags = '\0';
+	if (port == flags)
+	    port = NULL;
+    }
+
+    if (port == NULL)
+	port = tls ? (char *)defport_tls : (char *)defport;
+    else if (*port == '\0')
+	goto done;
+
+    *hostp = host;
+    *portp = port;
+    *tlsp = tls;
+
+    ret = true;
+
+done:
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/hostcheck.c b/lib/iolog/hostcheck.c
new file mode 100644
index 0000000..d23514e
--- /dev/null
+++ b/lib/iolog/hostcheck.c
@@ -0,0 +1,400 @@
+/*
+ * Copyright (c) 2020 Laszlo Orban <laszlo.orban@oneidentity.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#if defined(HAVE_OPENSSL)
+# if defined(HAVE_WOLFSSL)
+#  include <wolfssl/options.h>
+# endif
+# include <sys/types.h>
+# include <sys/socket.h>
+# include <netinet/in.h>
+# include <arpa/inet.h>
+# include <stdlib.h>
+# include <string.h>
+# include <netdb.h>
+
+# define NEED_INET_NTOP		/* to expose sudo_inet_ntop in sudo_compat.h */
+
+# include  "sudo_compat.h"
+# include  "sudo_debug.h"
+# include  "sudo_util.h"
+# include  "hostcheck.h"
+
+#ifndef INET_ADDRSTRLEN
+# define INET_ADDRSTRLEN 16
+#endif
+#ifndef INET6_ADDRSTRLEN
+# define INET6_ADDRSTRLEN 46
+#endif
+
+/**
+ * @brief Checks if given hostname resolves to the given IP address.
+ *
+ * @param hostname  hostname to be resolved
+ * @param ipaddr    ip address to be checked
+ *
+ * @return  1 if hostname resolves to the given IP address
+ *          0 otherwise
+ */
+static int
+forward_lookup_match(const char *hostname, const char *ipaddr)
+{
+    int rc, ret = 0;
+    struct addrinfo *res = NULL, *p;
+    void *addr;
+    struct sockaddr_in *ipv4;
+#if defined(HAVE_STRUCT_IN6_ADDR)
+    struct sockaddr_in6 *ipv6;
+    char ipstr[INET6_ADDRSTRLEN];
+#else
+    char ipstr[INET_ADDRSTRLEN];
+#endif
+    debug_decl(forward_lookup_match, SUDO_DEBUG_UTIL);
+
+    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+	"verify %s resolves to %s", hostname, ipaddr);
+
+    if ((rc = getaddrinfo(hostname, NULL, NULL, &res)) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable to resolve %s: %s", hostname, gai_strerror(rc));
+        goto exit;
+    }
+
+    for (p = res; p != NULL; p = p->ai_next) {
+        if (p->ai_family == AF_INET) {
+            ipv4 = (struct sockaddr_in *)p->ai_addr;
+            addr = &(ipv4->sin_addr);
+#if defined(HAVE_STRUCT_IN6_ADDR)
+        } else if (p->ai_family == AF_INET6) {
+            ipv6 = (struct sockaddr_in6 *)p->ai_addr;
+            addr = &(ipv6->sin6_addr);
+#endif
+        } else {
+            goto exit;
+        }
+
+        if (inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr)) != 0) {
+	    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+		"comparing %s to %s", ipstr, ipaddr);
+            if (strcmp(ipaddr, ipstr) == 0) {
+                ret = 1;
+                break;
+            }
+        }
+    }
+
+exit:
+    if (res != NULL) {
+        freeaddrinfo(res);
+    }
+    debug_return_int(ret);
+}
+
+/**
+ * @brief Compares the given hostname with a DNS entry in a certificate.
+ *
+ * The certificate DNS name can contain wildcards in the left-most label.
+ * A wildcard can match only one label.
+ * Accepted names:
+ *  - foo.bar.example.com
+ *  - *.example.com
+ *  - *.bar.example.com
+ *
+ * @param hostname          peer's name
+ * @param certname_asn1     hostname in the certificate
+ *
+ * @return  MatchFound
+ *          MatchNotFound
+ */
+static HostnameValidationResult
+validate_name(const char *hostname, ASN1_STRING *certname_asn1)
+{
+    char *certname_s = (char *) ASN1_STRING_get0_data(certname_asn1);
+    int certname_len = ASN1_STRING_length(certname_asn1);
+    int hostname_len = strlen(hostname);
+    debug_decl(validate_name, SUDO_DEBUG_UTIL);
+
+	/* remove last '.' from hostname if exists */
+	if (hostname_len != 0 && hostname[hostname_len - 1] == '.') {
+		--hostname_len;
+    }
+
+	sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+	    "comparing %.*s to %.*s in cert", hostname_len, hostname,
+	    certname_len, certname_s);
+
+	/* skip the first label if wildcard */
+	if (certname_len > 2 && certname_s[0] == '*' && certname_s[1] == '.') {
+		if (hostname_len != 0) {
+			do {
+				--hostname_len;
+				if (*hostname++ == '.') {
+					break;
+                }
+			} while (hostname_len != 0);
+		}
+		certname_s += 2;
+		certname_len -= 2;
+	}
+	/* Compare expected hostname with the DNS name */
+	if (certname_len != hostname_len) {
+		debug_return_int(MatchNotFound);
+	}
+    if (strncasecmp(hostname, certname_s, hostname_len) != 0) {
+        debug_return_int(MatchNotFound);
+    }
+
+    debug_return_int(MatchFound);
+}
+
+/**
+ * @brief Matches a hostname with the cert's CN.
+ *
+ * @param hostname  peer's name
+ *                  on client side: it is the name where the client is connected to
+ *                  on server side, it is in fact an IP address of the remote client
+ * @param ipaddr    peer's IP address
+ * @param cert      peer's X509 certificate
+ * @param resolve   if the value is not 0, the function checks that the value of the CN
+ *                  resolves to the given ipaddr or not.
+ *
+ * @return  MatchFound
+ *          MatchNotFound
+ *          MalformedCertificate
+ *          Error
+ */
+static HostnameValidationResult
+matches_common_name(const char *hostname, const char *ipaddr, const X509 *cert, int resolve)
+{
+	X509_NAME_ENTRY *common_name_entry = NULL;
+	ASN1_STRING *common_name_asn1 = NULL;
+ 	int common_name_loc;
+	debug_decl(matches_common_name, SUDO_DEBUG_UTIL);
+
+	/* Find the position of the CN field in the Subject field of the certificate */
+	common_name_loc = X509_NAME_get_index_by_NID(X509_get_subject_name((X509 *) cert), NID_commonName, -1);
+	if (common_name_loc < 0) {
+		debug_return_int(Error);
+	}
+
+	/* Extract the CN field */
+	common_name_entry = X509_NAME_get_entry(X509_get_subject_name((X509 *) cert), common_name_loc);
+	if (common_name_entry == NULL) {
+		debug_return_int(Error);
+	}
+
+	/* Convert the CN field to a C string */
+	common_name_asn1 = X509_NAME_ENTRY_get_data(common_name_entry);
+	if (common_name_asn1 == NULL) {
+		debug_return_int(Error);
+	}			
+	const unsigned char *common_name_str = ASN1_STRING_get0_data(common_name_asn1);
+
+	/* Make sure there isn't an embedded NUL character in the CN */
+    if (memchr(common_name_str, '\0', ASN1_STRING_length(common_name_asn1)) != NULL) {
+		debug_return_int(MalformedCertificate);
+	}
+
+	/* Compare expected hostname with the CN */
+    if (validate_name(hostname, common_name_asn1) == MatchFound) {
+		debug_return_int(MatchFound);
+	}
+
+    int common_name_length = ASN1_STRING_length(common_name_asn1);
+    char *nullterm_common_name = malloc(common_name_length + 1);
+
+    if (nullterm_common_name == NULL) {
+	debug_return_int(Error);
+    }
+
+    memcpy(nullterm_common_name, common_name_str, common_name_length);
+    nullterm_common_name[common_name_length] = '\0';
+
+
+    /* check if hostname in the CN field resolves to the given ip address */
+    if (resolve && forward_lookup_match(nullterm_common_name, ipaddr)) {
+        free(nullterm_common_name);
+		debug_return_int(MatchFound);
+    }
+
+    free(nullterm_common_name);
+    debug_return_int(MatchNotFound);
+}
+
+/**
+ * @brief Matches a hostname or ipaddr with the cert's corresponding SAN field.
+ *
+ * SAN can have different fields. For hostname matching, the GEN_DNS field is used,
+ * for IP address matching, the GEN_IPADD field is used.
+ * Since SAN is an X503 v3 extension, it can happen that the cert does
+ * not contain SAN at all.
+ *
+ * @param hostname  remote peer's name
+ *                  on client side: it is the name where the client is connected to
+ *                  on server side, it is in fact an IP address of the remote client
+ * @param ipaddr    remote peer's IP address
+ * @param cert      peer's X509 certificate
+ * @param resolve   if the value is not 0, the function checks that the value of the
+ *                  SAN GEN_DNS resolves to the given ipaddr or not.
+ *
+ * @return  MatchFound
+ *          MatchNotFound
+ *          NoSANPresent
+ *          MalformedCertificate
+ *          Error
+ */
+static HostnameValidationResult
+matches_subject_alternative_name(const char *hostname, const char *ipaddr, const X509 *cert, int resolve)
+{
+    HostnameValidationResult result = MatchNotFound;
+    int i;
+    int san_names_nb;
+    STACK_OF(GENERAL_NAME) *san_names = NULL;
+    debug_decl(matches_subject_alternative_name, SUDO_DEBUG_UTIL);
+
+    /* Try to extract the names within the SAN extension from the certificate */
+    san_names = X509_get_ext_d2i((X509 *) cert, NID_subject_alt_name, NULL, NULL);
+    if (san_names == NULL) {
+        debug_return_int(NoSANPresent);
+    }
+    san_names_nb = sk_GENERAL_NAME_num(san_names);
+
+    /* Check each name within the extension */
+    for (i=0; i<san_names_nb; i++) {
+        const GENERAL_NAME *current_name = sk_GENERAL_NAME_value(san_names, i);
+
+        if (current_name->type == GEN_DNS) {
+            const unsigned char *dns_name = ASN1_STRING_get0_data(current_name->d.dNSName);
+
+            /* Make sure there isn't an embedded NUL character in the DNS name */
+            if (memchr(dns_name, '\0', ASN1_STRING_length(current_name->d.dNSName)) != NULL) {
+                result = MalformedCertificate;
+                break;
+            } else {
+                /* Compare expected hostname with the DNS name */
+                if (validate_name(hostname, current_name->d.dNSName) == MatchFound) {
+                    result = MatchFound;
+                    break;
+                }
+
+                int dns_name_length = ASN1_STRING_length(current_name->d.dNSName);
+                char *nullterm_dns_name = malloc(dns_name_length + 1);
+
+                if (nullterm_dns_name == NULL) {
+                    debug_return_int(Error);
+                }
+
+                memcpy(nullterm_dns_name, dns_name, dns_name_length);
+                nullterm_dns_name[dns_name_length] = '\0';
+
+                if (resolve && forward_lookup_match(nullterm_dns_name, ipaddr)) {
+                    free(nullterm_dns_name);
+                    result = MatchFound;
+                    break;
+                }
+                free(nullterm_dns_name);
+            }
+        } else if (current_name->type == GEN_IPADD) {
+            const unsigned char *san_ip = ASN1_STRING_get0_data(current_name->d.iPAddress);
+#if defined(HAVE_STRUCT_IN6_ADDR)
+            char san_ip_str[INET6_ADDRSTRLEN];
+#else
+            char san_ip_str[INET_ADDRSTRLEN];
+#endif
+
+            /* IPV4 address */
+            if(current_name->d.iPAddress->length == 4) {
+                if (inet_ntop(AF_INET, san_ip, san_ip_str, INET_ADDRSTRLEN) == NULL) {
+                    result = MalformedCertificate;
+                    break;
+                }
+#if defined(HAVE_STRUCT_IN6_ADDR)
+            /* IPV6 address */
+            } else if (current_name->d.iPAddress->length == 16) {
+                if (inet_ntop(AF_INET6, san_ip, san_ip_str, INET6_ADDRSTRLEN) == NULL) {
+                    result = MalformedCertificate;
+                    break;
+                }
+# endif
+            } else {
+                result = MalformedCertificate;
+                break;
+            }
+
+            if (strcasecmp(ipaddr, san_ip_str) == 0) {
+                result = MatchFound;
+                break;
+            }
+        }
+    }
+    sk_GENERAL_NAME_pop_free(san_names, GENERAL_NAME_free);
+
+    debug_return_int(result);
+}
+
+/**
+ * @brief Do hostname/IP validation on the given X509 certificate.
+ *
+ * According to RFC 6125 section 6.4.4, first the certificate's SAN field
+ * has to be checked. If there is no SAN field, the certificate's CN field
+ * has to be checked.
+ *
+ * @param cert      X509 certificate
+ * @param hostname  remote peer's name
+ *                  on client side: it is the name where the client is connected to
+ *                  on server side, it is in fact an IP address of the remote client
+ * @param ipaddr    remote peer's IP address
+ * @param resolve   if the value is not 0, the function checks that the value of the
+ *                  SAN GEN_DNS or the value of CN resolves to the given ipaddr or not.
+ *
+ * @return  MatchFound
+ *          MatchNotFound
+ *          MalformedCertificate
+ *          Error
+ */
+HostnameValidationResult
+validate_hostname(const X509 *cert, const char *hostname, const char *ipaddr, int resolve)
+{
+    HostnameValidationResult res = MatchFound;
+    debug_decl(validate_hostname, SUDO_DEBUG_UTIL);
+
+    /* hostname can be also an ip address, if client connects
+     * to ip instead of FQDN
+     */
+    if((ipaddr == NULL) || (cert == NULL)) {
+        debug_return_int(Error);
+    }
+
+    /* check SAN first if exists */
+    res = matches_subject_alternative_name(hostname, ipaddr, cert, resolve);
+
+    /* According to RFC 6125 section 6.4.4, check CN only,
+     * if no SAN name was provided
+     */
+    if (res == NoSANPresent) {
+        res = matches_common_name(hostname, ipaddr, cert, resolve);
+    }
+
+    debug_return_int(res);
+}
+#endif /* HAVE_OPENSSL */
diff --git a/lib/iolog/iolog_clearerr.c b/lib/iolog/iolog_clearerr.c
new file mode 100644
index 0000000..631e020
--- /dev/null
+++ b/lib/iolog/iolog_clearerr.c
@@ -0,0 +1,45 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+void
+iolog_clearerr(struct iolog_file *iol)
+{
+    debug_decl(iolog_eof, SUDO_DEBUG_UTIL);
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed)
+	gzclearerr(iol->fd.g);
+    else
+#endif
+	clearerr(iol->fd.f);
+    debug_return;
+}
diff --git a/lib/iolog/iolog_close.c b/lib/iolog/iolog_close.c
new file mode 100644
index 0000000..caa68c6
--- /dev/null
+++ b/lib/iolog/iolog_close.c
@@ -0,0 +1,80 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Close an I/O log.
+ */
+bool
+iolog_close(struct iolog_file *iol, const char **errstr)
+{
+    bool ret = true;
+    debug_decl(iolog_close, SUDO_DEBUG_UTIL);
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed) {
+	int errnum;
+
+	/* Must check error indicator before closing. */
+	if (iol->writable) {
+	    if (gzflush(iol->fd.g, Z_SYNC_FLUSH) != Z_OK) {
+		ret = false;
+		if (errstr != NULL) {
+		    *errstr = gzerror(iol->fd.g, &errnum);
+		    if (errnum == Z_ERRNO)
+			*errstr = strerror(errno);
+		}
+	    }
+	}
+	errnum = gzclose(iol->fd.g);
+	if (ret && errnum != Z_OK) {
+	    ret = false;
+	    if (errstr != NULL)
+		*errstr = errnum == Z_ERRNO ? strerror(errno) : "unknown error";
+	}
+    } else
+#endif
+    if (fclose(iol->fd.f) != 0) {
+	ret = false;
+	if (errstr != NULL)
+	    *errstr = strerror(errno);
+    }
+
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/iolog_conf.c b/lib/iolog/iolog_conf.c
new file mode 100644
index 0000000..61a35a5
--- /dev/null
+++ b/lib/iolog/iolog_conf.c
@@ -0,0 +1,202 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+
+#include "pathnames.h"
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+#include "sudo_iolog.h"
+
+static unsigned int sessid_max = SESSID_MAX;
+static mode_t iolog_filemode = S_IRUSR|S_IWUSR;
+static mode_t iolog_dirmode = S_IRWXU;
+static uid_t iolog_uid = ROOT_UID;
+static gid_t iolog_gid = ROOT_GID;
+static bool iolog_gid_set;
+static bool iolog_docompress;
+static bool iolog_doflush;
+
+/*
+ * Reset I/O log settings to default values.
+ */
+void
+iolog_set_defaults(void)
+{
+    sessid_max = SESSID_MAX;
+    iolog_filemode = S_IRUSR|S_IWUSR;
+    iolog_dirmode = S_IRWXU;
+    iolog_uid = ROOT_UID;
+    iolog_gid = ROOT_GID;
+    iolog_gid_set = false;
+    iolog_docompress = false;
+    iolog_doflush = false;
+}
+
+/*
+ * Set max sequence number (aka session ID)
+ */
+void
+iolog_set_maxseq(unsigned int newval)
+{
+    debug_decl(iolog_set_maxseq, SUDO_DEBUG_UTIL);
+
+    /* Clamp to SESSID_MAX as documented. */
+    if (newval > SESSID_MAX)
+	newval = SESSID_MAX;
+    sessid_max = newval;
+
+    debug_return;
+}
+
+/*
+ * Set iolog_uid (and iolog_gid if gid not explicitly set).
+ */
+void
+iolog_set_owner(uid_t uid, gid_t gid)
+{
+    debug_decl(iolog_set_owner, SUDO_DEBUG_UTIL);
+
+    iolog_uid = uid;
+    if (!iolog_gid_set)
+	iolog_gid = gid;
+
+    debug_return;
+}
+
+/*
+ * Set iolog_gid.
+ */
+void
+iolog_set_gid(gid_t gid)
+{
+    debug_decl(iolog_set_gid, SUDO_DEBUG_UTIL);
+
+    iolog_gid = gid;
+    iolog_gid_set = true;
+
+    debug_return;
+}
+
+/*
+ * Set iolog_filemode and iolog_dirmode.
+ */
+void
+iolog_set_mode(mode_t mode)
+{
+    debug_decl(iolog_set_mode, SUDO_DEBUG_UTIL);
+
+    /* I/O log files must be readable and writable by owner. */
+    iolog_filemode = S_IRUSR|S_IWUSR;
+
+    /* Add in group and other read/write if specified. */
+    iolog_filemode |= mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
+
+    /* For directory mode, add execute bits as needed. */
+    iolog_dirmode = iolog_filemode | S_IXUSR;
+    if (iolog_dirmode & (S_IRGRP|S_IWGRP))
+	iolog_dirmode |= S_IXGRP;
+    if (iolog_dirmode & (S_IROTH|S_IWOTH))
+	iolog_dirmode |= S_IXOTH;
+
+    debug_return;
+}
+
+/*
+ * Set iolog_docompress
+ */
+void
+iolog_set_compress(bool newval)
+{
+    debug_decl(iolog_set_compress, SUDO_DEBUG_UTIL);
+    iolog_docompress = newval;
+    debug_return;
+}
+
+/*
+ * Set iolog_doflush
+ */
+void
+iolog_set_flush(bool newval)
+{
+    debug_decl(iolog_set_flush, SUDO_DEBUG_UTIL);
+    iolog_doflush = newval;
+    debug_return;
+}
+
+/*
+ * Getters.
+ */
+
+unsigned int
+iolog_get_maxseq(void)
+{
+    return sessid_max;
+}
+
+uid_t
+iolog_get_uid(void)
+{
+    return iolog_uid;
+}
+
+gid_t
+iolog_get_gid(void)
+{
+    return iolog_gid;
+}
+
+mode_t
+iolog_get_file_mode(void)
+{
+    return iolog_filemode;
+}
+
+mode_t
+iolog_get_dir_mode(void)
+{
+    return iolog_dirmode;
+}
+
+bool
+iolog_get_compress(void)
+{
+    return iolog_docompress;
+}
+
+bool
+iolog_get_flush(void)
+{
+    return iolog_doflush;
+}
diff --git a/lib/iolog/iolog_eof.c b/lib/iolog/iolog_eof.c
new file mode 100644
index 0000000..c1cece2
--- /dev/null
+++ b/lib/iolog/iolog_eof.c
@@ -0,0 +1,54 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Returns true if at end of I/O log file, else false.
+ */
+bool
+iolog_eof(struct iolog_file *iol)
+{
+    bool ret;
+    debug_decl(iolog_eof, SUDO_DEBUG_UTIL);
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed)
+	ret = gzeof(iol->fd.g) != 0;
+    else
+#endif
+	ret = feof(iol->fd.f) != 0;
+    debug_return_int(ret);
+}
diff --git a/lib/iolog/iolog_filter.c b/lib/iolog/iolog_filter.c
new file mode 100644
index 0000000..ecccf18
--- /dev/null
+++ b/lib/iolog/iolog_filter.c
@@ -0,0 +1,248 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <regex.h>
+#include <string.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_queue.h"
+#include "sudo_util.h"
+
+struct pwfilt_regex {
+    TAILQ_ENTRY(pwfilt_regex) entries;
+    char *pattern;
+    regex_t regex;
+};
+TAILQ_HEAD(pwfilt_regex_list, pwfilt_regex);
+
+struct pwfilt_handle {
+    struct pwfilt_regex_list filters;
+    bool is_filtered;
+};
+
+/*
+ * Allocate a new filter handle.
+ */
+void *
+iolog_pwfilt_alloc(void)
+{
+    struct pwfilt_handle *handle;
+    debug_decl(iolog_pwfilt_alloc, SUDO_DEBUG_UTIL);
+
+    handle = malloc(sizeof(*handle));
+    if (handle != NULL) {
+	TAILQ_INIT(&handle->filters);
+	handle->is_filtered = false;
+    }
+
+    debug_return_ptr(handle);
+}
+
+/*
+ * Unlink filt from filters and free it.
+ */
+static void
+iolog_pwfilt_free_filter(struct pwfilt_regex_list *filters,
+    struct pwfilt_regex *filt)
+{
+    debug_decl(iolog_pwfilt_free_filter, SUDO_DEBUG_UTIL);
+
+    if (filt != NULL) {
+	TAILQ_REMOVE(filters, filt, entries);
+	regfree(&filt->regex);
+	free(filt->pattern);
+	free(filt);
+    }
+
+    debug_return;
+}
+
+/*
+ * Free the given password filter handle.
+ */
+void
+iolog_pwfilt_free(void *vhandle)
+{
+    struct pwfilt_handle *handle = vhandle;
+    struct pwfilt_regex *filt;
+    debug_decl(iolog_pwfilt_free, SUDO_DEBUG_UTIL);
+
+    if (handle != NULL) {
+	while ((filt = TAILQ_FIRST(&handle->filters)) != NULL) {
+	    iolog_pwfilt_free_filter(&handle->filters, filt);
+	}
+	free(handle);
+    }
+    debug_return;
+}
+
+/*
+ * Add a pattern to the password filter list.
+ */
+bool
+iolog_pwfilt_add(void *vhandle, const char *pattern)
+{
+    struct pwfilt_handle *handle = vhandle;
+    struct pwfilt_regex *filt;
+    const char *errstr;
+    debug_decl(iolog_pwfilt_add, SUDO_DEBUG_UTIL);
+
+    filt = malloc(sizeof(*filt));
+    if (filt == NULL)
+	goto oom;
+    filt->pattern = strdup(pattern);
+    if (filt->pattern == NULL)
+	goto oom;
+
+    if (!sudo_regex_compile(&filt->regex, filt->pattern, &errstr)) {
+	sudo_warnx(U_("invalid regular expression \"%s\": %s"),
+	    pattern, U_(errstr));
+	goto bad;
+    }
+
+    TAILQ_INSERT_TAIL(&handle->filters, filt, entries);
+    debug_return_bool(true);
+
+oom:
+    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+bad:
+    if (filt != NULL) {
+	free(filt->pattern);
+	free(filt);
+    }
+    debug_return_bool(false);
+}
+
+/*
+ * Remove a pattern from the password filter list.
+ */
+bool
+iolog_pwfilt_remove(void *vhandle, const char *pattern)
+{
+    struct pwfilt_handle *handle = vhandle;
+    struct pwfilt_regex *filt, *next;
+    bool ret = false;
+    debug_decl(iolog_pwfilt_remove, SUDO_DEBUG_UTIL);
+
+    TAILQ_FOREACH_SAFE(filt, &handle->filters, entries, next) {
+	if (strcmp(filt->pattern, pattern) == 0) {
+	    iolog_pwfilt_free_filter(&handle->filters, filt);
+	    ret = true;
+	}
+    }
+    debug_return_bool(ret);
+}
+
+/*
+ * If logging output and filtering is _not_ enabled, match buf against the
+ * password filter list patterns and, if there is a match, enable filtering.
+ * If logging output and filtering _is_ enabled, disable filtering.
+ * If logging input and filtering is enabled, replace all characters in
+ * buf with stars ('*') up to the next linefeed or carriage return.
+ */
+bool
+iolog_pwfilt_run(void *vhandle, int event, const char *buf,
+    unsigned int len, char **newbuf)
+{
+    struct pwfilt_handle *handle = vhandle;
+    struct pwfilt_regex *filt;
+    char *copy;
+    debug_decl(iolog_pwfilt_run, SUDO_DEBUG_UTIL);
+
+    /*
+     * We only filter ttyin/ttyout.  It is only possible to disable
+     * echo when a tty is present.  Filtering passwords in the input
+     * log when they appear in the output is pointless.  This does
+     * assume that the password prompt is written to the tty as well.
+     */
+    switch (event) {
+    case IO_EVENT_TTYOUT:
+	/* If filtering passwords and we receive output, disable it. */
+	if (handle->is_filtered)
+	    handle->is_filtered = false;
+
+	/* Make a copy of buf that is NUL-terminated. */
+	copy = malloc(len + 1);
+	if (copy == NULL) {
+	    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	    debug_return_bool(false);
+	}
+	memcpy(copy, buf, len);
+	copy[len] = '\0';
+
+	/* Check output for a password prompt. */
+	TAILQ_FOREACH(filt, &handle->filters, entries) {
+	    if (regexec(&filt->regex, copy, 0, NULL, 0) == 0) {
+		handle->is_filtered = true;
+		break;
+	    }
+	}
+	free(copy);
+	break;
+    case IO_EVENT_TTYIN:
+	if (handle->is_filtered) {
+	    unsigned int i;
+
+	    for (i = 0; i < len; i++) {
+		/* We will stop filtering after reaching cr/nl. */
+		if (buf[i] == '\r' || buf[i] == '\n') {
+		    handle->is_filtered = false;
+		    break;
+		}
+	    }
+	    if (i != 0) {
+		/* Filtered, replace buffer with '*' chars. */
+		copy = malloc(len);
+		if (copy == NULL) {
+		    sudo_warnx(U_("%s: %s"), __func__,
+			U_("unable to allocate memory"));
+		    debug_return_bool(false);
+		}
+		memset(copy, '*', i);
+		if (i != len) {
+		    /* Done filtering, copy cr/nl and subsequent characters. */
+		    memcpy(copy + i, buf + i, len - i);
+		}
+		*newbuf = copy;
+	    }
+	}
+	break;
+    }
+
+    debug_return_bool(true);
+}
diff --git a/lib/iolog/iolog_flush.c b/lib/iolog/iolog_flush.c
new file mode 100644
index 0000000..f7a0b08
--- /dev/null
+++ b/lib/iolog/iolog_flush.c
@@ -0,0 +1,66 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * I/O log wrapper for fflush/gzflush.
+ */
+bool
+iolog_flush(struct iolog_file *iol, const char **errstr)
+{
+    debug_decl(iolog_flush, SUDO_DEBUG_UTIL);
+    bool ret = true;
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed) {
+	int errnum;
+	if (gzflush(iol->fd.g, Z_SYNC_FLUSH) != Z_OK) {
+	    if (errstr != NULL) {
+		*errstr = gzerror(iol->fd.g, &errnum);
+		if (errnum == Z_ERRNO)
+		    *errstr = strerror(errno);
+	    }
+	    ret = false;
+	}
+    } else
+#endif
+    {
+	if (fflush(iol->fd.f) != 0) {
+	    if (errstr != NULL)
+		*errstr = strerror(errno);
+	    ret = false;
+	}
+    }
+
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/iolog_gets.c b/lib/iolog/iolog_gets.c
new file mode 100644
index 0000000..0ef5a23
--- /dev/null
+++ b/lib/iolog/iolog_gets.c
@@ -0,0 +1,78 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Like gets() but for struct iolog_file.
+ */
+char *
+iolog_gets(struct iolog_file *iol, char *buf, size_t nbytes,
+    const char **errstr)
+{
+    char *str;
+    debug_decl(iolog_gets, SUDO_DEBUG_UTIL);
+
+    if (nbytes > UINT_MAX) {
+	errno = EINVAL;
+	if (errstr != NULL)
+	    *errstr = strerror(errno);
+	debug_return_str(NULL);
+    }
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed) {
+	if ((str = gzgets(iol->fd.g, buf, nbytes)) == NULL) {
+	    if (errstr != NULL) {
+		int errnum;
+		*errstr = gzerror(iol->fd.g, &errnum);
+		if (errnum == Z_ERRNO)
+		    *errstr = strerror(errno);
+	    }
+	}
+    } else
+#endif
+    {
+	if ((str = fgets(buf, nbytes, iol->fd.f)) == NULL) {
+	    if (errstr != NULL)
+		*errstr = strerror(errno);
+	}
+    }
+    debug_return_str(str);
+}
diff --git a/lib/iolog/iolog_json.c b/lib/iolog/iolog_json.c
new file mode 100644
index 0000000..6f384ea
--- /dev/null
+++ b/lib/iolog/iolog_json.c
@@ -0,0 +1,938 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+#include "iolog_json.h"
+
+struct json_stack {
+    unsigned int depth;
+    unsigned int maxdepth;
+    struct json_object *frames[64];
+};
+#define JSON_STACK_INTIALIZER(s) { 0, nitems((s).frames) };
+
+static bool
+json_store_columns(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_columns, SUDO_DEBUG_UTIL);
+
+    if (item->u.number < 1 || item->u.number > INT_MAX) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "tty cols %lld: out of range", item->u.number);
+	evlog->columns = 0;
+	debug_return_bool(false);
+    }
+
+    evlog->columns = item->u.number;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_command(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_command, SUDO_DEBUG_UTIL);
+
+    /*
+     * Note: struct eventlog must store command + args.
+     *       We don't have argv yet so we append the args later.
+     */
+    free(evlog->command);
+    evlog->command = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_dumped_core(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_dumped_core, SUDO_DEBUG_UTIL);
+
+    evlog->dumped_core = item->u.boolean;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_exit_value(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_exit_value, SUDO_DEBUG_UTIL);
+
+    if (item->u.number < 0 || item->u.number > INT_MAX) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "exit value %lld: out of range", item->u.number);
+	evlog->exit_value = -1;
+	debug_return_bool(false);
+    }
+
+    evlog->exit_value = item->u.number;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_lines(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_lines, SUDO_DEBUG_UTIL);
+
+    if (item->u.number < 1 || item->u.number > INT_MAX) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "tty lines %lld: out of range", item->u.number);
+	evlog->lines = 0;
+	debug_return_bool(false);
+    }
+
+    evlog->lines = item->u.number;
+    debug_return_bool(true);
+}
+
+char **
+json_array_to_strvec(struct json_object *array)
+{
+    struct json_item *item;
+    int len = 0;
+    char **ret;
+    debug_decl(json_array_to_strvec, SUDO_DEBUG_UTIL);
+
+    TAILQ_FOREACH(item, &array->items, entries) {
+	/* Can only convert arrays of string. */
+	if (item->type != JSON_STRING) {
+	    sudo_warnx(U_("expected JSON_STRING, got %d"), item->type);
+	    debug_return_ptr(NULL);
+	}
+	/* Prevent integer overflow. */
+	if (++len == INT_MAX) {
+	    sudo_warnx("%s", U_("JSON_ARRAY too large"));
+	    debug_return_ptr(NULL);
+	}
+    }
+    if ((ret = reallocarray(NULL, len + 1, sizeof(char *))) == NULL) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	debug_return_ptr(NULL);
+    }
+    len = 0;
+    TAILQ_FOREACH(item, &array->items, entries) {
+	ret[len++] = item->u.string;
+	item->u.string = NULL;
+    }
+    ret[len] = NULL;
+
+    debug_return_ptr(ret);
+}
+
+static bool
+json_store_runargv(struct json_item *item, struct eventlog *evlog)
+{
+    int i;
+    debug_decl(json_store_runargv, SUDO_DEBUG_UTIL);
+
+    if (evlog->argv != NULL) {
+	for (i = 0; evlog->argv[i] != NULL; i++)
+	    free(evlog->argv[i]);
+	free(evlog->argv);
+    }
+    evlog->argv = json_array_to_strvec(&item->u.child);
+
+    debug_return_bool(evlog->argv != NULL);
+}
+
+static bool
+json_store_runenv(struct json_item *item, struct eventlog *evlog)
+{
+    int i;
+    debug_decl(json_store_runenv, SUDO_DEBUG_UTIL);
+
+    if (evlog->envp != NULL) {
+	for (i = 0; evlog->envp[i] != NULL; i++)
+	    free(evlog->envp[i]);
+	free(evlog->envp);
+    }
+    evlog->envp = json_array_to_strvec(&item->u.child);
+
+    debug_return_bool(evlog->envp != NULL);
+}
+
+static bool
+json_store_rungid(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_rungid, SUDO_DEBUG_UTIL);
+
+    evlog->rungid = (gid_t)item->u.number;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_rungroup(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_rungroup, SUDO_DEBUG_UTIL);
+
+    free(evlog->rungroup);
+    evlog->rungroup = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_runuid(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_runuid, SUDO_DEBUG_UTIL);
+
+    evlog->runuid = (uid_t)item->u.number;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_runuser(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_runuser, SUDO_DEBUG_UTIL);
+
+    free(evlog->runuser);
+    evlog->runuser = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_runchroot(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_runchroot, SUDO_DEBUG_UTIL);
+
+    free(evlog->runchroot);
+    evlog->runchroot = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_runcwd(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_runcwd, SUDO_DEBUG_UTIL);
+
+    free(evlog->runcwd);
+    evlog->runcwd = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_signal(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_signal, SUDO_DEBUG_UTIL);
+
+    free(evlog->signal_name);
+    evlog->signal_name = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_submitcwd(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_submitcwd, SUDO_DEBUG_UTIL);
+
+    free(evlog->cwd);
+    evlog->cwd = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_submithost(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_submithost, SUDO_DEBUG_UTIL);
+
+    free(evlog->submithost);
+    evlog->submithost = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_submituser(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_submituser, SUDO_DEBUG_UTIL);
+
+    free(evlog->submituser);
+    evlog->submituser = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static bool
+json_store_timespec(struct json_item *item, struct timespec *ts)
+{
+    struct json_object *object;
+    debug_decl(json_store_timespec, SUDO_DEBUG_UTIL);
+
+    object = &item->u.child;
+    TAILQ_FOREACH(item, &object->items, entries) {
+	if (item->type != JSON_NUMBER)
+	    continue;
+	if (strcmp(item->name, "seconds") == 0) {
+	    ts->tv_sec = item->u.number;
+	    continue;
+	}
+	if (strcmp(item->name, "nanoseconds") == 0) {
+	    ts->tv_nsec = item->u.number;
+	    continue;
+	}
+    }
+    debug_return_bool(true);
+}
+
+static bool
+json_store_run_time(struct json_item *item, struct eventlog *evlog)
+{
+    return json_store_timespec(item, &evlog->run_time);
+}
+
+static bool
+json_store_timestamp(struct json_item *item, struct eventlog *evlog)
+{
+    return json_store_timespec(item, &evlog->submit_time);
+}
+
+static bool
+json_store_ttyname(struct json_item *item, struct eventlog *evlog)
+{
+    debug_decl(json_store_ttyname, SUDO_DEBUG_UTIL);
+
+    free(evlog->ttyname);
+    evlog->ttyname = item->u.string;
+    item->u.string = NULL;
+    debug_return_bool(true);
+}
+
+static struct iolog_json_key {
+    const char *name;
+    enum json_value_type type;
+    bool (*setter)(struct json_item *, struct eventlog *);
+} iolog_json_keys[] = {
+    { "columns", JSON_NUMBER, json_store_columns },
+    { "command", JSON_STRING, json_store_command },
+    { "dumped_core", JSON_BOOL, json_store_dumped_core },
+    { "exit_value", JSON_NUMBER, json_store_exit_value },
+    { "lines", JSON_NUMBER, json_store_lines },
+    { "run_time", JSON_OBJECT, json_store_run_time },
+    { "runargv", JSON_ARRAY, json_store_runargv },
+    { "runenv", JSON_ARRAY, json_store_runenv },
+    { "rungid", JSON_ID, json_store_rungid },
+    { "rungroup", JSON_STRING, json_store_rungroup },
+    { "runuid", JSON_ID, json_store_runuid },
+    { "runuser", JSON_STRING, json_store_runuser },
+    { "runchroot", JSON_STRING, json_store_runchroot },
+    { "runcwd", JSON_STRING, json_store_runcwd },
+    { "signal", JSON_STRING, json_store_signal },
+    { "submitcwd", JSON_STRING, json_store_submitcwd },
+    { "submithost", JSON_STRING, json_store_submithost },
+    { "submituser", JSON_STRING, json_store_submituser },
+    { "timestamp", JSON_OBJECT, json_store_timestamp },
+    { "ttyname", JSON_STRING, json_store_ttyname },
+    { NULL }
+};
+
+static struct json_item *
+new_json_item(enum json_value_type type, char *name, unsigned int lineno)
+{
+    struct json_item *item;
+    debug_decl(new_json_item, SUDO_DEBUG_UTIL);
+
+    if ((item = malloc(sizeof(*item))) == NULL)  {
+	sudo_warnx(U_("%s: %s"), __func__,
+	    U_("unable to allocate memory"));
+	debug_return_ptr(NULL);
+    }
+    item->name = name;
+    item->type = type;
+    item->lineno = lineno;
+
+    debug_return_ptr(item);
+}
+
+static char *
+json_parse_string(char **strp)
+{
+    char *dst, *end, *ret, *src = *strp + 1;
+    size_t len;
+    debug_decl(json_parse_string, SUDO_DEBUG_UTIL);
+
+    for (end = src; *end != '"' && *end != '\0'; end++) {
+	if (end[0] == '\\' && end[1] == '"')
+	    end++;
+    }
+    if (*end != '"') {
+	sudo_warnx("%s", U_("missing double quote in name"));
+	debug_return_str(NULL);
+    }
+    len = (size_t)(end - src);
+
+    /* Copy string, flattening escaped chars. */
+    dst = ret = malloc(len + 1);
+    if (dst == NULL) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	debug_return_str(NULL);
+    }
+    while (src < end) {
+	char ch = *src++;
+	if (ch == '\\') {
+	    switch (*src) {
+	    case 'b':
+		ch = '\b';
+		break;
+	    case 'f':
+		ch = '\f';
+		break;
+	    case 'n':
+		ch = '\n';
+		break;
+	    case 'r':
+		ch = '\r';
+		break;
+	    case 't':
+		ch = '\t';
+		break;
+	    case 'u':
+		/* Only currently handles 8-bit ASCII. */
+		if (src[1] == '0' && src[2] == '0') {
+		    ch = sudo_hexchar(&src[3]);
+		    if (ch != -1) {
+			src += 4;
+			break;
+		    }
+		}
+		/* Not in \u00XX format. */
+		FALLTHROUGH;
+	    case '"':
+	    case '\\':
+	    default:
+		/* Note: a bare \ at the end of a string will be removed. */
+		ch = *src;
+		break;
+	    }
+	    src++;
+	}
+	*dst++ = ch;
+    }
+    *dst = '\0';
+
+    /* Trim trailing whitespace. */
+    do {
+	end++;
+    } while (isspace((unsigned char)*end));
+    *strp = end;
+
+    debug_return_str(ret);
+}
+
+void
+free_json_items(struct json_item_list *items)
+{
+    struct json_item *item;
+    debug_decl(free_json_items, SUDO_DEBUG_UTIL);
+
+    while ((item = TAILQ_FIRST(items)) != NULL) {
+	TAILQ_REMOVE(items, item, entries);
+	switch (item->type) {
+	case JSON_STRING:
+	    free(item->u.string);
+	    break;
+	case JSON_ARRAY:
+	case JSON_OBJECT:
+	    free_json_items(&item->u.child.items);
+	    break;
+	case JSON_ID:
+	case JSON_NUMBER:
+	case JSON_BOOL:
+	case JSON_NULL:
+	    /* Nothing to free. */
+	    break;
+	default:
+	    sudo_warnx("%s: internal error, invalid JSON type %d",
+		__func__, item->type);
+	    break;
+	}
+	free(item->name);
+	free(item);
+    }
+
+    debug_return;
+}
+
+static bool
+iolog_parse_json_object(struct json_object *object, struct eventlog *evlog)
+{
+    struct json_item *item;
+    bool ret = false;
+    debug_decl(iolog_parse_json_object, SUDO_DEBUG_UTIL);
+
+    /* First object holds all the actual data. */
+    item = TAILQ_FIRST(&object->items);
+    if (item == NULL) {
+	sudo_warnx("%s", U_("missing JSON_OBJECT"));
+	goto done;
+    }
+    if (item->type != JSON_OBJECT) {
+	sudo_warnx(U_("expected JSON_OBJECT, got %d"), item->type);
+	goto done;
+    }
+    object = &item->u.child;
+
+    TAILQ_FOREACH(item, &object->items, entries) {
+	struct iolog_json_key *key;
+
+	/* expecting key:value pairs */
+	if (item->name == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,
+		"%s: missing object name", __func__);
+	    goto done;
+	}
+
+	/* lookup name */
+	for (key = iolog_json_keys; key->name != NULL; key++) {
+	    if (strcmp(item->name, key->name) == 0)
+		break;
+	}
+	if (key->name == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,
+		"%s: unknown key %s", __func__, item->name);
+	} else if (key->type != item->type &&
+		(key->type != JSON_ID || item->type != JSON_NUMBER)) {
+	    sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_LINENO,
+		"%s: key mismatch %s type %d, expected %d", __func__,
+		item->name, item->type, key->type);
+	    goto done;
+	} else {
+	    /* Matched name and type. */
+	    if (!key->setter(item, evlog)) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "unable to store %s", key->name);
+		goto done;
+	    }
+	}
+    }
+
+    ret = true;
+
+done:
+    debug_return_bool(ret);
+}
+
+static bool
+json_insert_bool(struct json_item_list *items, char *name, bool value,
+    unsigned int lineno)
+{
+    struct json_item *item;
+    debug_decl(json_insert_bool, SUDO_DEBUG_UTIL);
+
+    if ((item = new_json_item(JSON_BOOL, name, lineno)) == NULL)
+	debug_return_bool(false);
+    item->u.boolean = value;
+    TAILQ_INSERT_TAIL(items, item, entries);
+
+    debug_return_bool(true);
+}
+
+static bool
+json_insert_null(struct json_item_list *items, char *name, unsigned int lineno)
+{
+    struct json_item *item;
+    debug_decl(json_insert_null, SUDO_DEBUG_UTIL);
+
+    if ((item = new_json_item(JSON_NULL, name, lineno)) == NULL)
+	debug_return_bool(false);
+    TAILQ_INSERT_TAIL(items, item, entries);
+
+    debug_return_bool(true);
+}
+
+static bool
+json_insert_num(struct json_item_list *items, char *name, long long value,
+    unsigned int lineno)
+{
+    struct json_item *item;
+    debug_decl(json_insert_num, SUDO_DEBUG_UTIL);
+
+    if ((item = new_json_item(JSON_NUMBER, name, lineno)) == NULL)
+	debug_return_bool(false);
+    item->u.number = value;
+    TAILQ_INSERT_TAIL(items, item, entries);
+
+    debug_return_bool(true);
+}
+
+static bool
+json_insert_str(struct json_item_list *items, char *name, char **strp,
+    unsigned int lineno)
+{
+    struct json_item *item;
+    debug_decl(json_insert_str, SUDO_DEBUG_UTIL);
+
+    if ((item = new_json_item(JSON_STRING, name, lineno)) == NULL)
+	debug_return_bool(false);
+    item->u.string = json_parse_string(strp);
+    if (item->u.string == NULL) {
+	free(item);
+	debug_return_bool(false);
+    }
+    TAILQ_INSERT_TAIL(items, item, entries);
+
+    debug_return_bool(true);
+}
+
+static struct json_object *
+json_stack_push(struct json_stack *stack, struct json_item_list *items,
+    struct json_object *frame, enum json_value_type type, char *name,
+    unsigned int lineno)
+{
+    struct json_item *item;
+    debug_decl(json_stack_push, SUDO_DEBUG_UTIL);
+
+    /* We limit the stack size rather than expanding it. */
+    if (stack->depth >= stack->maxdepth) {
+	sudo_warnx(U_("json stack exhausted (max %u frames)"), stack->maxdepth);
+	debug_return_ptr(NULL);
+    }
+
+    /* Allocate a new item and insert it into the list. */
+    if ((item = new_json_item(type, name, lineno)) == NULL)
+	debug_return_ptr(NULL);
+    TAILQ_INIT(&item->u.child.items);
+    item->u.child.parent = item;
+    TAILQ_INSERT_TAIL(items, item, entries);
+
+    /* Push the current frame onto the stack (depth check performed above). */
+    stack->frames[stack->depth++] = frame;
+
+    /* Return the new frame */
+    debug_return_ptr(&item->u.child);
+}
+
+/* Only expect a value if a name is defined or we are in an array. */
+#define expect_value (name != NULL || (frame->parent != NULL && frame->parent->type == JSON_ARRAY))
+
+bool
+iolog_parse_json(FILE *fp, const char *filename, struct json_object *root)
+{
+    struct json_object *frame = root;
+    struct json_stack stack = JSON_STACK_INTIALIZER(stack);
+    unsigned int lineno = 0;
+    char *name = NULL;
+    char *cp, *buf = NULL;
+    size_t bufsize = 0;
+    ssize_t len;
+    bool ret = false;
+    bool saw_comma = false;
+    long long num;
+    char ch;
+    debug_decl(iolog_parse_json, SUDO_DEBUG_UTIL);
+
+    root->parent = NULL;
+    TAILQ_INIT(&root->items);
+
+    while ((len = getdelim(&buf, &bufsize, '\n', fp)) != -1) {
+	char *ep = buf + len - 1;
+	cp = buf;
+
+	lineno++;
+
+	/* Trim trailing whitespace. */
+	while (ep > cp && isspace((unsigned char)*ep))
+	    ep--;
+	ep[1] = '\0';
+
+	for (;;) {
+	    const char *errstr;
+
+	    /* Trim leading whitespace, skip blank lines. */
+	    while (isspace((unsigned char)*cp))
+		cp++;
+
+	    /* Check for comma separator and strip it out. */
+	    if (*cp == ',') {
+		saw_comma = true;
+		cp++;
+		while (isspace((unsigned char)*cp))
+		    cp++;
+	    }
+
+	    /* End of line? */
+	    if (*cp == '\0')
+		break;
+
+	    switch (*cp) {
+	    case '{':
+		if (name == NULL && frame->parent != NULL) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("objects must consist of name:value pairs"));
+		    goto done;
+		}
+		if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("missing separator between values"));
+		    goto done;
+		}
+		cp++;
+		saw_comma = false;
+		frame = json_stack_push(&stack, &frame->items, frame,
+		    JSON_OBJECT, name, lineno);
+		if (frame == NULL)
+		    goto done;
+		name = NULL;
+		break;
+	    case '}':
+		if (stack.depth == 0 || frame->parent == NULL ||
+			frame->parent->type != JSON_OBJECT) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unmatched close brace"));
+		    goto done;
+		}
+		cp++;
+		frame = stack.frames[--stack.depth];
+		saw_comma = false;
+		break;
+	    case '[':
+		if (frame->parent == NULL) {
+		    /* Must have an enclosing object. */
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unexpected array"));
+		    goto done;
+		}
+		if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("missing separator between values"));
+		    goto done;
+		}
+		cp++;
+		saw_comma = false;
+		frame = json_stack_push(&stack, &frame->items, frame,
+		    JSON_ARRAY, name, lineno);
+		if (frame == NULL)
+		    goto done;
+		name = NULL;
+		break;
+	    case ']':
+		if (stack.depth == 0 || frame->parent == NULL ||
+			frame->parent->type != JSON_ARRAY) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unmatched close bracket"));
+		    goto done;
+		}
+		cp++;
+		frame = stack.frames[--stack.depth];
+		saw_comma = false;
+		break;
+	    case '"':
+		if (frame->parent == NULL) {
+		    /* Must have an enclosing object. */
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unexpected string"));
+		    goto done;
+		}
+
+		if (!expect_value) {
+		    /* Parse "name": */
+		    if ((name = json_parse_string(&cp)) == NULL)
+			goto done;
+		    /* TODO: allow colon on next line? */
+		    if (*cp != ':') {
+			sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			    U_("missing colon after name"));
+			goto done;
+		    }
+		    cp++;
+		} else {
+		    if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+			sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			    U_("missing separator between values"));
+			goto done;
+		    }
+		    saw_comma = false;
+		    if (!json_insert_str(&frame->items, name, &cp, lineno))
+			goto done;
+		    name = NULL;
+		}
+		break;
+	    case 't':
+		if (strncmp(cp, "true", sizeof("true") - 1) != 0)
+		    goto parse_error;
+		if (!expect_value) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unexpected boolean"));
+		    goto done;
+		}
+		cp += sizeof("true") - 1;
+		if (*cp != ',' && !isspace((unsigned char)*cp) && *cp != '\0')
+		    goto parse_error;
+		if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("missing separator between values"));
+		    goto done;
+		}
+		saw_comma = false;
+
+		if (!json_insert_bool(&frame->items, name, true, lineno))
+		    goto done;
+		name = NULL;
+		break;
+	    case 'f':
+		if (strncmp(cp, "false", sizeof("false") - 1) != 0)
+		    goto parse_error;
+		if (!expect_value) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unexpected boolean"));
+		    goto done;
+		}
+		cp += sizeof("false") - 1;
+		if (*cp != ',' && !isspace((unsigned char)*cp) && *cp != '\0')
+		    goto parse_error;
+		if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("missing separator between values"));
+		    goto done;
+		}
+		saw_comma = false;
+
+		if (!json_insert_bool(&frame->items, name, false, lineno))
+		    goto done;
+		name = NULL;
+		break;
+	    case 'n':
+		if (strncmp(cp, "null", sizeof("null") - 1) != 0)
+		    goto parse_error;
+		if (!expect_value) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unexpected null"));
+		    goto done;
+		}
+		cp += sizeof("null") - 1;
+		if (*cp != ',' && !isspace((unsigned char)*cp) && *cp != '\0')
+		    goto parse_error;
+		if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("missing separator between values"));
+		    goto done;
+		}
+		saw_comma = false;
+
+		if (!json_insert_null(&frame->items, name, lineno))
+		    goto done;
+		name = NULL;
+		break;
+	    case '+': case '-': case '0': case '1': case '2': case '3':
+	    case '4': case '5': case '6': case '7': case '8': case '9':
+		if (!expect_value) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("unexpected number"));
+		    goto done;
+		}
+		/* XXX - strtonumx() would be simpler here. */
+		len = strcspn(cp, " \f\n\r\t\v,");
+		ch = cp[len];
+		cp[len] = '\0';
+		if (!saw_comma && !TAILQ_EMPTY(&frame->items)) {
+		    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, 
+			U_("missing separator between values"));
+		    goto done;
+		}
+		saw_comma = false;
+		num = sudo_strtonum(cp, LLONG_MIN, LLONG_MAX, &errstr);
+		if (errstr != NULL) {
+		    sudo_warnx("%s:%u:%td: %s: %s", filename, lineno, cp - buf,
+			cp, U_(errstr));
+		    goto done;
+		}
+		cp += len;
+		*cp = ch;
+
+		if (!json_insert_num(&frame->items, name, num, lineno))
+		    goto done;
+		name = NULL;
+		break;
+	    default:
+		goto parse_error;
+	    }
+	}
+    }
+    if (stack.depth != 0) {
+	frame = stack.frames[stack.depth - 1];
+	if (frame->parent == NULL || frame->parent->type == JSON_OBJECT) {
+	    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf,
+		U_("unmatched close brace"));
+	} else {
+	    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf,
+		U_("unmatched close bracket"));
+	}
+	goto done;
+    }
+
+    ret = true;
+    goto done;
+
+parse_error:
+    sudo_warnx("%s:%u:%td: %s", filename, lineno, cp - buf, U_("parse error"));
+done:
+    free(buf);
+    free(name);
+    if (!ret)
+	free_json_items(&root->items);
+
+    debug_return_bool(ret);
+}
+
+bool
+iolog_parse_loginfo_json(FILE *fp, const char *iolog_dir, struct eventlog *evlog)
+{
+    struct json_object root;
+    bool ret = false;
+    debug_decl(iolog_parse_loginfo_json, SUDO_DEBUG_UTIL);
+
+    if (iolog_parse_json(fp, iolog_dir, &root)) {
+	/* Walk the stack and parse entries. */
+	ret = iolog_parse_json_object(&root, evlog);
+
+	/* Cleanup. */
+	free_json_items(&root.items);
+    }
+
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/iolog_json.h b/lib/iolog/iolog_json.h
new file mode 100644
index 0000000..bc28dfa
--- /dev/null
+++ b/lib/iolog/iolog_json.h
@@ -0,0 +1,50 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef IOLOG_JSON_H
+#define IOLOG_JSON_H
+
+#include "sudo_json.h"
+#include "sudo_queue.h"
+
+TAILQ_HEAD(json_item_list, json_item);
+
+struct json_object {
+    struct json_item *parent;
+    struct json_item_list items;
+};
+
+struct json_item {
+    TAILQ_ENTRY(json_item) entries;
+    char *name;		/* may be NULL for first brace */
+    unsigned int lineno;
+    enum json_value_type type;
+    union {
+	struct json_object child;
+	char *string;
+	long long number;
+	id_t id;
+	bool boolean;
+    } u;
+};
+
+void free_json_items(struct json_item_list *items);
+bool iolog_parse_json(FILE *fp, const char *filename, struct json_object *root);
+char **json_array_to_strvec(struct json_object *array);
+
+#endif /* IOLOG_JSON_H */
diff --git a/lib/iolog/iolog_legacy.c b/lib/iolog/iolog_legacy.c
new file mode 100644
index 0000000..5d987ae
--- /dev/null
+++ b/lib/iolog/iolog_legacy.c
@@ -0,0 +1,168 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <signal.h>
+#include <limits.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+bool
+iolog_parse_loginfo_legacy(FILE *fp, const char *iolog_dir,
+    struct eventlog *evlog)
+{
+    char *buf = NULL, *cp, *ep;
+    const char *errstr;
+    size_t bufsize = 0, cwdsize = 0, cmdsize = 0;
+    bool ret = false;
+    debug_decl(iolog_parse_loginfo_legacy, SUDO_DEBUG_UTIL);
+
+    /*
+     * Info file has three lines:
+     *  1) a log info line
+     *  2) cwd
+     *  3) command with args
+     */
+    if (getdelim(&buf, &bufsize, '\n', fp) == -1 ||
+	getdelim(&evlog->cwd, &cwdsize, '\n', fp) == -1 ||
+	getdelim(&evlog->command, &cmdsize, '\n', fp) == -1) {
+	sudo_warn(U_("%s: invalid log file"), iolog_dir);
+	goto done;
+    }
+
+    /* Strip the newline from the cwd and command. */
+    evlog->cwd[strcspn(evlog->cwd, "\n")] = '\0';
+    evlog->command[strcspn(evlog->command, "\n")] = '\0';
+
+    /*
+     * Crack the log line (lines and cols not present in old versions).
+     *	timestamp:user:runas_user:runas_group:tty:lines:cols
+     * XXX - probably better to use strtok and switch on the state.
+     */
+    buf[strcspn(buf, "\n")] = '\0';
+    cp = buf;
+
+    /* timestamp */
+    if ((ep = strchr(cp, ':')) == NULL) {
+	sudo_warn(U_("%s: time stamp field is missing"), iolog_dir);
+	goto done;
+    }
+    *ep = '\0';
+    evlog->submit_time.tv_sec = sudo_strtonum(cp, 0, TIME_T_MAX, &errstr);
+    if (errstr != NULL) {
+	sudo_warn(U_("%s: time stamp %s: %s"), iolog_dir, cp, errstr);
+	goto done;
+    }
+
+    /* submit user */
+    cp = ep + 1;
+    if ((ep = strchr(cp, ':')) == NULL) {
+	sudo_warn(U_("%s: user field is missing"), iolog_dir);
+	goto done;
+    }
+    if ((evlog->submituser = strndup(cp, (size_t)(ep - cp))) == NULL) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	goto done;
+    }
+
+    /* runas user */
+    cp = ep + 1;
+    if ((ep = strchr(cp, ':')) == NULL) {
+	sudo_warn(U_("%s: runas user field is missing"), iolog_dir);
+	goto done;
+    }
+    if ((evlog->runuser = strndup(cp, (size_t)(ep - cp))) == NULL) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	goto done;
+    }
+
+    /* runas group */
+    cp = ep + 1;
+    if ((ep = strchr(cp, ':')) == NULL) {
+	sudo_warn(U_("%s: runas group field is missing"), iolog_dir);
+	goto done;
+    }
+    if (cp != ep) {
+	if ((evlog->rungroup = strndup(cp, (size_t)(ep - cp))) == NULL) {
+	    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	    goto done;
+	}
+    }
+
+    /* tty, followed by optional lines + cols */
+    cp = ep + 1;
+    if ((ep = strchr(cp, ':')) == NULL) {
+	/* just the tty */
+	if ((evlog->ttyname = strdup(cp)) == NULL) {
+	    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	    goto done;
+	}
+    } else {
+	/* tty followed by lines + cols */
+	if ((evlog->ttyname = strndup(cp, (size_t)(ep - cp))) == NULL) {
+	    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	    goto done;
+	}
+	cp = ep + 1;
+	/* need to NULL out separator to use sudo_strtonum() */
+	/* XXX - use sudo_strtonumx */
+	if ((ep = strchr(cp, ':')) != NULL) {
+	    *ep = '\0';
+	}
+	evlog->lines = sudo_strtonum(cp, 1, INT_MAX, &errstr);
+	if (errstr != NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: tty lines %s: %s", iolog_dir, cp, errstr);
+	}
+	if (ep != NULL) {
+	    cp = ep + 1;
+	    evlog->columns = sudo_strtonum(cp, 1, INT_MAX, &errstr);
+	    if (errstr != NULL) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "%s: tty cols %s: %s", iolog_dir, cp, errstr);
+	    }
+	}
+    }
+
+    ret = true;
+
+done:
+    free(buf);
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/iolog_loginfo.c b/lib/iolog/iolog_loginfo.c
new file mode 100644
index 0000000..373a81e
--- /dev/null
+++ b/lib/iolog/iolog_loginfo.c
@@ -0,0 +1,238 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_json.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+struct eventlog *
+iolog_parse_loginfo(int dfd, const char *iolog_dir)
+{
+    struct eventlog *evlog = NULL;
+    FILE *fp = NULL;
+    int fd = -1;
+    int tmpfd = -1;
+    bool ok, legacy = false;
+    debug_decl(iolog_parse_loginfo, SUDO_DEBUG_UTIL);
+
+    if (dfd == -1) {
+	if ((tmpfd = open(iolog_dir, O_RDONLY)) == -1) {
+	    sudo_warn("%s", iolog_dir);
+	    goto bad;
+	}
+	dfd = tmpfd;
+    }
+    if ((fd = openat(dfd, "log.json", O_RDONLY, 0)) == -1) {
+	fd = openat(dfd, "log", O_RDONLY, 0);
+	legacy = true;
+    }
+    if (tmpfd != -1)
+	close(tmpfd);
+    if (fd == -1 || (fp = fdopen(fd, "r")) == NULL) {
+	sudo_warn("%s/log", iolog_dir);
+	goto bad;
+    }
+    fd = -1;
+
+    if ((evlog = calloc(1, sizeof(*evlog))) == NULL) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	goto bad;
+    }
+    evlog->runuid = (uid_t)-1;
+    evlog->rungid = (gid_t)-1;
+    evlog->exit_value = -1;
+
+    ok = legacy ? iolog_parse_loginfo_legacy(fp, iolog_dir, evlog) :
+	iolog_parse_loginfo_json(fp, iolog_dir, evlog);
+    if (ok) {
+	fclose(fp);
+	debug_return_ptr(evlog);
+    }
+
+bad:
+    if (fd != -1)
+	close(fd);
+    if (fp != NULL)
+	fclose(fp);
+    eventlog_free(evlog);
+    debug_return_ptr(NULL);
+}
+
+/*
+ * Write the legacy I/O log file that contains the user and command info.
+ * This file is not compressed.
+ */
+static bool
+iolog_write_info_file_legacy(int dfd, struct eventlog *evlog)
+{
+    char * const *av;
+    FILE *fp;
+    int error, fd;
+    debug_decl(iolog_info_write_log, SUDO_DEBUG_UTIL);
+
+    fd = iolog_openat(dfd, "log", O_CREAT|O_TRUNC|O_WRONLY);
+    if (fd == -1 || (fp = fdopen(fd, "w")) == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to %sopen %s/log", fd == -1 ? "" : "fd", evlog->iolog_path);
+	if (fd != -1)
+	    close(fd);
+	debug_return_bool(false);
+    }
+    if (fchown(fd, iolog_get_uid(), iolog_get_gid()) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: unable to fchown %d:%d %s/log", __func__,
+	    (int)iolog_get_uid(), (int)iolog_get_gid(), evlog->iolog_path);
+    }
+
+    fprintf(fp, "%lld:%s:%s:%s:%s:%d:%d\n%s\n",
+	(long long)evlog->submit_time.tv_sec,
+	evlog->submituser ? evlog->submituser : "unknown",
+	evlog->runuser ? evlog->runuser : RUNAS_DEFAULT,
+	evlog->rungroup ? evlog->rungroup : "",
+	evlog->ttyname ? evlog->ttyname : "unknown",
+	evlog->lines, evlog->columns,
+	evlog->cwd ? evlog->cwd : "unknown");
+    fputs(evlog->command ? evlog->command : "unknown", fp);
+    for (av = evlog->argv + 1; *av != NULL; av++) {
+	fputc(' ', fp);
+	fputs(*av, fp);
+    }
+    fputc('\n', fp);
+    fflush(fp);
+    if ((error = ferror(fp))) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to write to I/O log file %s/log", evlog->iolog_path);
+    }
+    fclose(fp);
+
+    debug_return_bool(!error);
+}
+
+/*
+ * Write the "log.json" file that contains the user and command info.
+ * This file is not compressed.
+ */
+static bool
+iolog_write_info_file_json(int dfd, struct eventlog *evlog)
+{
+    struct json_container jsonc;
+    struct json_value json_value;
+    bool ret = false;
+    FILE *fp = NULL;
+    int fd = -1;
+    debug_decl(iolog_write_info_file_json, SUDO_DEBUG_UTIL);
+
+    if (!sudo_json_init(&jsonc, 4, false, false, false))
+	debug_return_bool(false);
+
+    /* Timestamp */
+    if (!sudo_json_open_object(&jsonc, "timestamp"))
+	goto oom;
+
+    json_value.type = JSON_NUMBER;
+    json_value.u.number = evlog->submit_time.tv_sec;
+    if (!sudo_json_add_value(&jsonc, "seconds", &json_value))
+        goto oom;
+
+    json_value.type = JSON_NUMBER;
+    json_value.u.number = evlog->submit_time.tv_nsec;
+    if (!sudo_json_add_value(&jsonc, "nanoseconds", &json_value))
+        goto oom;
+
+    if (!sudo_json_close_object(&jsonc))
+	goto oom;
+
+    if (!eventlog_store_json(&jsonc, evlog))
+	goto done;
+
+    fd = iolog_openat(dfd, "log.json", O_CREAT|O_TRUNC|O_WRONLY);
+    if (fd == -1 || (fp = fdopen(fd, "w")) == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "unable to %sopen %s/log.json", fd == -1 ? "" : "fd",
+	    evlog->iolog_path);
+        goto done;
+    }
+    if (fchown(fd, iolog_get_uid(), iolog_get_gid()) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: unable to fchown %d:%d %s/log.json", __func__,
+	    (int)iolog_get_uid(), (int)iolog_get_gid(), evlog->iolog_path);
+    }
+    fd = -1;
+
+    fprintf(fp, "{%s\n}\n", sudo_json_get_buf(&jsonc));
+    fflush(fp);
+    if (ferror(fp)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+            "unable to write to I/O log file %s/log.json", evlog->iolog_path);
+	goto done;
+    }
+
+    ret = true;
+    goto done;
+
+oom:
+    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+done:
+    sudo_json_free(&jsonc);
+    if (fp != NULL)
+	fclose(fp);
+    if (fd != -1)
+	close(fd);
+
+    debug_return_bool(ret);
+}
+
+/*
+ * Write the I/O log and log.json files that contain user and command info.
+ * These files are not compressed.
+ */
+bool
+iolog_write_info_file(int dfd, struct eventlog *evlog)
+{
+    debug_decl(iolog_write_info_file, SUDO_DEBUG_UTIL);
+
+    if (!iolog_write_info_file_legacy(dfd, evlog))
+	debug_return_bool(false);
+    if (!iolog_write_info_file_json(dfd, evlog))
+	debug_return_bool(false);
+
+    debug_return_bool(true);
+}
diff --git a/lib/iolog/iolog_mkdirs.c b/lib/iolog/iolog_mkdirs.c
new file mode 100644
index 0000000..c9ab980
--- /dev/null
+++ b/lib/iolog/iolog_mkdirs.c
@@ -0,0 +1,143 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+/*
+ * Create directory and any parent directories as needed.
+ */
+bool
+iolog_mkdirs(const char *path)
+{
+    const mode_t iolog_filemode = iolog_get_file_mode();
+    const mode_t iolog_dirmode = iolog_get_dir_mode();
+    const uid_t iolog_uid = iolog_get_uid();
+    const gid_t iolog_gid = iolog_get_gid();
+    bool ok = true, uid_changed = false;
+    struct stat sb;
+    mode_t omask;
+    int dfd;
+    debug_decl(iolog_mkdirs, SUDO_DEBUG_UTIL);
+
+    dfd = open(path, O_RDONLY|O_NONBLOCK);
+    if (dfd == -1 && errno == EACCES) {
+	/* Try again as the I/O log owner (for NFS). */
+	if (iolog_swapids(false)) {
+	    dfd = open(path, O_RDONLY|O_NONBLOCK);
+	    if (!iolog_swapids(true)) {
+		ok = false;
+		goto done;
+	    }
+	}
+    }
+    if (dfd != -1 && fstat(dfd, &sb) != -1) {
+	if (S_ISDIR(sb.st_mode)) {
+	    if (sb.st_uid != iolog_uid || sb.st_gid != iolog_gid) {
+		if (fchown(dfd, iolog_uid, iolog_gid) != 0) {
+		    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+			"%s: unable to chown %d:%d %s", __func__,
+			(int)iolog_uid, (int)iolog_gid, path);
+		}
+	    }
+	    if ((sb.st_mode & ALLPERMS) != iolog_dirmode) {
+		if (fchmod(dfd, iolog_dirmode) != 0) {
+		    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+			"%s: unable to chmod 0%o %s", __func__,
+			(int)iolog_dirmode, path);
+		}
+	    }
+	} else {
+	    sudo_warnx(U_("%s exists but is not a directory (0%o)"),
+		path, (unsigned int) sb.st_mode);
+	    ok = false;
+	}
+	goto done;
+    }
+
+    /* umask must not be more restrictive than the file modes. */
+    omask = umask(ACCESSPERMS & ~(iolog_filemode|iolog_dirmode));
+
+    ok = false;
+    if (dfd != -1)
+	close(dfd);
+    dfd = sudo_open_parent_dir(path, iolog_uid, iolog_gid, iolog_dirmode, true);
+    if (dfd == -1 && errno == EACCES) {
+	/* Try again as the I/O log owner (for NFS). */
+	uid_changed = iolog_swapids(false);
+	if (uid_changed)
+	    dfd = sudo_open_parent_dir(path, -1, -1, iolog_dirmode, false);
+    }
+    if (dfd != -1) {
+	/* Create final path component. */
+	const char *base = sudo_basename(path);
+	sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	    "mkdir %s, mode 0%o", path, (unsigned int) iolog_dirmode);
+	ok = mkdirat(dfd, base, iolog_dirmode) == 0 || errno == EEXIST;
+	if (!ok) {
+	    if (errno == EACCES && !uid_changed) {
+		/* Try again as the I/O log owner (for NFS). */
+		uid_changed = iolog_swapids(false);
+		if (uid_changed)
+		    ok = mkdirat(dfd, base, iolog_dirmode) == 0 || errno == EEXIST;
+	    }
+	    if (!ok)
+		sudo_warn(U_("unable to mkdir %s"), path);
+	} else {
+	    if (fchownat(dfd, base, iolog_uid, iolog_gid, AT_SYMLINK_NOFOLLOW) != 0) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+		    "%s: unable to chown %d:%d %s", __func__,
+		    (int)iolog_uid, (int)iolog_gid, path);
+	    }
+	}
+    }
+    if (uid_changed) {
+	if (!iolog_swapids(true))
+	    ok = false;
+    }
+
+    umask(omask);
+
+done:
+    if (dfd != -1)
+	close(dfd);
+    debug_return_bool(ok);
+}
diff --git a/lib/iolog/iolog_mkdtemp.c b/lib/iolog/iolog_mkdtemp.c
new file mode 100644
index 0000000..cf06a6c
--- /dev/null
+++ b/lib/iolog/iolog_mkdtemp.c
@@ -0,0 +1,99 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <time.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+#include "sudo_iolog.h"
+
+/*
+ * Create temporary directory and any parent directories as needed.
+ */
+bool
+iolog_mkdtemp(char *path)
+{
+    const mode_t iolog_filemode = iolog_get_file_mode();
+    const mode_t iolog_dirmode = iolog_get_dir_mode();
+    const uid_t iolog_uid = iolog_get_uid();
+    const gid_t iolog_gid = iolog_get_gid();
+    bool ok = false, uid_changed = false;
+    char *dir = sudo_basename(path);
+    mode_t omask;
+    int dfd;
+    debug_decl(iolog_mkdtemp, SUDO_DEBUG_UTIL);
+
+    /* umask must not be more restrictive than the file modes. */
+    omask = umask(ACCESSPERMS & ~(iolog_filemode|iolog_dirmode));
+
+    dfd = sudo_open_parent_dir(path, iolog_uid, iolog_gid, iolog_dirmode, true);
+    if (dfd == -1 && errno == EACCES) {
+	/* Try again as the I/O log owner (for NFS). */
+	uid_changed = iolog_swapids(false);
+	if (uid_changed)
+	    dfd = sudo_open_parent_dir(path, -1, -1, iolog_dirmode, false);
+    }
+    if (dfd != -1) {
+	/* Create final path component. */
+	sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	    "mkdtemp %s", path);
+	/* We cannot retry mkdtemp() so always open as iolog user */
+	if (!uid_changed)
+	    uid_changed = iolog_swapids(false);
+	if (mkdtempat(dfd, dir) == NULL) {
+	    sudo_warn(U_("unable to mkdir %s"), path);
+	    ok = false;
+	} else {
+	    if (fchmodat(dfd, dir, iolog_dirmode, 0) != 0) {
+		/* Not a fatal error, pre-existing mode is 0700. */
+		sudo_warn(U_("unable to change mode of %s to 0%o"),
+		    path, (unsigned int)iolog_dirmode);
+	    }
+	    ok = true;
+	}
+	close(dfd);
+    }
+
+    umask(omask);
+
+    if (uid_changed) {
+	if (!iolog_swapids(true))
+	    ok = false;
+    }
+    debug_return_bool(ok);
+}
diff --git a/lib/iolog/iolog_mkpath.c b/lib/iolog/iolog_mkpath.c
new file mode 100644
index 0000000..b4d177a
--- /dev/null
+++ b/lib/iolog/iolog_mkpath.c
@@ -0,0 +1,65 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Create path and any intermediate directories.
+ * If path ends in 'XXXXXX', use mkdtemp().
+ */
+bool
+iolog_mkpath(char *path)
+{
+    size_t len;
+    bool ret;
+    debug_decl(iolog_mkpath, SUDO_DEBUG_UTIL);
+
+    /*
+     * Create path and intermediate subdirs as needed.
+     * If path ends in at least 6 Xs (ala POSIX mktemp), use mkdtemp().
+     * Sets iolog_gid (if it is not already set) as a side effect.
+     */
+    len = strlen(path);
+    if (len >= 6 && strcmp(&path[len - 6], "XXXXXX") == 0)
+	ret = iolog_mkdtemp(path);
+    else
+	ret = iolog_mkdirs(path);
+
+    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO, "iolog path %s", path);
+
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/iolog_nextid.c b/lib/iolog/iolog_nextid.c
new file mode 100644
index 0000000..8977a35
--- /dev/null
+++ b/lib/iolog/iolog_nextid.c
@@ -0,0 +1,151 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+/*
+ * Read the on-disk sequence number, set sessid to the next
+ * number, and update the on-disk copy.
+ * Uses file locking to avoid sequence number collisions.
+ */
+bool
+iolog_nextid(const char *iolog_dir, char sessid[7])
+{
+    char buf[32], *ep;
+    int i, fd = -1;
+    unsigned long id = 0;
+    size_t len;
+    ssize_t nread;
+    bool ret = false;
+    char pathbuf[PATH_MAX];
+    static const char b36char[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    const uid_t iolog_uid = iolog_get_uid();
+    const gid_t iolog_gid = iolog_get_gid();
+    debug_decl(iolog_nextid, SUDO_DEBUG_UTIL);
+
+    /*
+     * Create I/O log directory if it doesn't already exist.
+     */
+    len = strlcpy(pathbuf, iolog_dir, sizeof(pathbuf));
+    if (len >= sizeof(pathbuf)) {
+	errno = ENAMETOOLONG;
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: %s", __func__, iolog_dir);
+	goto done;
+    }
+    if (!iolog_mkdirs(pathbuf))
+	goto done;
+
+    /*
+     * Open sequence file
+     */
+    len = strlcat(pathbuf, "/seq", sizeof(pathbuf));
+    if (len >= sizeof(pathbuf)) {
+	errno = ENAMETOOLONG;
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: %s/seq", __func__, iolog_dir);
+	goto done;
+    }
+    fd = iolog_openat(AT_FDCWD, pathbuf, O_RDWR|O_CREAT);
+    if (fd == -1) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: unable to open %s", __func__, pathbuf);
+	goto done;
+    }
+    if (!sudo_lock_file(fd, SUDO_LOCK)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable to lock %s", pathbuf);
+	goto done;
+    }
+    if (fchown(fd, iolog_uid, iolog_gid) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: unable to fchown %d:%d %s", __func__,
+	    (int)iolog_uid, (int)iolog_gid, pathbuf);
+    }
+
+    /* Read current seq number (base 36). */
+    nread = read(fd, buf, sizeof(buf) - 1);
+    if (nread != 0) {
+	if (nread == -1) {
+	    goto done;
+	}
+	if (buf[nread - 1] == '\n')
+	    nread--;
+	buf[nread] = '\0';
+	id = strtoul(buf, &ep, 36);
+	if (ep == buf || *ep != '\0' || id >= iolog_get_maxseq()) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: bad sequence number: %s", pathbuf, buf);
+	    id = 0;
+	}
+    }
+    id++;
+
+    /*
+     * Convert id to a string and stash in sessid.
+     * Note that that least significant digits go at the end of the string.
+     */
+    for (i = 5; i >= 0; i--) {
+	buf[i] = b36char[id % 36];
+	id /= 36;
+    }
+    buf[6] = '\n';
+
+    /* Stash id for logging purposes. */
+    memcpy(sessid, buf, 6);
+    sessid[6] = '\0';
+
+    /* Rewind and overwrite old seq file, including the NUL byte. */
+    if (pwrite(fd, buf, 7, 0) != 7) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+	    "%s: unable to write %s", __func__, pathbuf);
+	goto done;
+    }
+    ret = true;
+
+done:
+    if (fd != -1)
+	close(fd);
+    debug_return_bool(ret);
+}
diff --git a/lib/iolog/iolog_open.c b/lib/iolog/iolog_open.c
new file mode 100644
index 0000000..c2556a7
--- /dev/null
+++ b/lib/iolog/iolog_open.c
@@ -0,0 +1,127 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+static unsigned char const gzip_magic[2] = {0x1f, 0x8b};
+
+/*
+ * Open the specified I/O log file and store in iol.
+ * Stores the open file handle which has the close-on-exec flag set.
+ */
+bool
+iolog_open(struct iolog_file *iol, int dfd, int iofd, const char *mode)
+{
+    int flags;
+    const char *file;
+    unsigned char magic[2];
+    const uid_t iolog_uid = iolog_get_uid();
+    const gid_t iolog_gid = iolog_get_gid();
+    debug_decl(iolog_open, SUDO_DEBUG_UTIL);
+
+    if (mode[0] == 'r') {
+	flags = mode[1] == '+' ? O_RDWR : O_RDONLY;
+    } else if (mode[0] == 'w') {
+	flags = O_CREAT|O_TRUNC;
+	flags |= mode[1] == '+' ? O_RDWR : O_WRONLY;
+    } else {
+	sudo_debug_printf(SUDO_DEBUG_ERROR,
+	    "%s: invalid I/O mode %s", __func__, mode);
+	debug_return_bool(false);
+    }
+    if ((file = iolog_fd_to_name(iofd)) == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR,
+	    "%s: invalid iofd %d", __func__, iofd);
+	debug_return_bool(false);
+    }
+
+    iol->writable = false;
+    iol->compressed = false;
+    if (iol->enabled) {
+	int fd = iolog_openat(dfd, file, flags);
+	if (fd != -1) {
+	    if (*mode == 'w') {
+		if (fchown(fd, iolog_uid, iolog_gid) != 0) {
+		    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+			"%s: unable to fchown %d:%d %s", __func__,
+			(int)iolog_uid, (int)iolog_gid, file);
+		}
+		iol->compressed = iolog_get_compress();
+	    } else {
+		/* check for gzip magic number */
+		if (pread(fd, magic, sizeof(magic), 0) == ssizeof(magic)) {
+		    if (magic[0] == gzip_magic[0] && magic[1] == gzip_magic[1])
+			iol->compressed = true;
+		}
+	    }
+	    if (fcntl(fd, F_SETFD, FD_CLOEXEC) != -1) {
+#ifdef HAVE_ZLIB_H
+		if (iol->compressed)
+		    iol->fd.g = gzdopen(fd, mode);
+		else
+#endif
+		    iol->fd.f = fdopen(fd, mode);
+	    }
+	    if (iol->fd.v != NULL) {
+		switch ((flags & O_ACCMODE)) {
+		case O_WRONLY:
+		case O_RDWR:
+		    iol->writable = true;
+		    break;
+		}
+	    } else {
+		int save_errno = errno;
+		close(fd);
+		errno = save_errno;
+		fd = -1;
+	    }
+	}
+	if (fd == -1) {
+	    iol->enabled = false;
+	    debug_return_bool(false);
+	}
+    } else {
+	if (*mode == 'w') {
+	    /* Remove old log file in case we recycled sequence numbers. */
+	    (void)unlinkat(dfd, file, 0);
+	}
+    }
+    debug_return_bool(true);
+}
diff --git a/lib/iolog/iolog_openat.c b/lib/iolog/iolog_openat.c
new file mode 100644
index 0000000..f6cd21b
--- /dev/null
+++ b/lib/iolog/iolog_openat.c
@@ -0,0 +1,90 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+/*
+ * Wrapper for openat(2) that sets umask and retries as iolog_uid/iolog_gid
+ * if openat(2) returns EACCES.
+ */
+int
+iolog_openat(int dfd, const char *path, int flags)
+{
+    const mode_t iolog_filemode = iolog_get_file_mode();
+    const mode_t iolog_dirmode = iolog_get_dir_mode();
+    mode_t omask = S_IRWXG|S_IRWXO;
+    int fd;
+    debug_decl(iolog_openat, SUDO_DEBUG_UTIL);
+
+    if (ISSET(flags, O_CREAT)) {
+	/* umask must not be more restrictive than the file modes. */
+	omask = umask(ACCESSPERMS & ~(iolog_filemode|iolog_dirmode));
+    }
+    fd = openat(dfd, path, flags, iolog_filemode);
+    if (fd == -1 && errno == EACCES) {
+	/* Enable write bit if it is missing. */
+	struct stat sb;
+	if (fstatat(dfd, path, &sb, 0) == 0) {
+	    mode_t write_bits = iolog_filemode & (S_IWUSR|S_IWGRP|S_IWOTH);
+	    if ((sb.st_mode & write_bits) != write_bits) {
+		if (fchmodat(dfd, path, iolog_filemode, 0) == 0)
+		    fd = openat(dfd, path, flags, iolog_filemode);
+	    }
+	}
+    }
+    if (fd == -1 && errno == EACCES) {
+	/* Try again as the I/O log owner (for NFS). */
+	if (iolog_swapids(false)) {
+	    fd = openat(dfd, path, flags, iolog_filemode);
+	    if (!iolog_swapids(true)) {
+		/* iolog_swapids() warns on error. */
+		if (fd != -1) {
+		    close(fd);
+		    fd = -1;
+		}
+	    }
+	}
+    }
+    if (ISSET(flags, O_CREAT))
+	umask(omask);
+    debug_return_int(fd);
+}
diff --git a/lib/iolog/iolog_path.c b/lib/iolog/iolog_path.c
new file mode 100644
index 0000000..16f228c
--- /dev/null
+++ b/lib/iolog/iolog_path.c
@@ -0,0 +1,130 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <limits.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+/*
+ * Expand any escape sequences in inpath, returning the expanded path.
+ */
+bool
+expand_iolog_path(const char *inpath, char *path, size_t pathlen,
+    const struct iolog_path_escape *escapes, void *closure)
+{
+    char *dst, *pathend, tmpbuf[PATH_MAX];
+    const char *endbrace, *src;
+    bool strfit = false;
+    size_t len;
+    debug_decl(expand_iolog_path, SUDO_DEBUG_UTIL);
+
+    /* Collapse multiple leading slashes. */
+    while (inpath[0] == '/' && inpath[1] == '/')
+	inpath++;
+
+    pathend = path + pathlen;
+    for (src = inpath, dst = path; *src != '\0'; src++) {
+	if (src[0] == '%') {
+	    if (src[1] == '{') {
+		endbrace = strchr(src + 2, '}');
+		if (endbrace != NULL) {
+		    const struct iolog_path_escape *esc;
+		    len = (size_t)(endbrace - src - 2);
+		    for (esc = escapes; esc->name != NULL; esc++) {
+			if (strncmp(src + 2, esc->name, len) == 0 &&
+			    esc->name[len] == '\0')
+			    break;
+		    }
+		    if (esc->name != NULL) {
+			len = esc->copy_fn(dst, (size_t)(pathend - dst),
+			    closure);
+			if (len >= (size_t)(pathend - dst))
+			    goto bad;
+			dst += len;
+			src = endbrace;
+			continue;
+		    }
+		}
+	    } else if (src[1] == '%') {
+		/* Collapse %% -> % */
+		src++;
+	    } else {
+		/* May need strftime() */
+		strfit = true;
+	    }
+	}
+	/* Need at least 2 chars, including the NUL terminator. */
+	if (dst + 1 >= pathend)
+	    goto bad;
+	*dst++ = *src;
+    }
+
+    /* Trim trailing slashes and NUL terminate. */
+    while (dst > path && dst[-1] == '/')
+	dst--;
+    *dst = '\0';
+
+    /* Expand strftime escapes as needed. */
+    if (strfit) {
+	struct tm tm;
+	time_t now;
+
+	time(&now);
+	if (localtime_r(&now, &tm) == NULL)
+	    goto bad;
+
+	/* We only call strftime() on the current part of the buffer. */
+	tmpbuf[sizeof(tmpbuf) - 1] = '\0';
+	len = strftime(tmpbuf, sizeof(tmpbuf), path, &tm);
+
+	if (len == 0 || tmpbuf[sizeof(tmpbuf) - 1] != '\0')
+	    goto bad;		/* strftime() failed, buf too small? */
+
+	if (len >= (size_t)(pathend - path))
+	    goto bad;		/* expanded buffer too big to fit. */
+	memcpy(path, tmpbuf, len);
+	dst = path + len;
+	*dst = '\0';
+    }
+
+    debug_return_bool(true);
+bad:
+    debug_return_bool(false);
+}
diff --git a/lib/iolog/iolog_read.c b/lib/iolog/iolog_read.c
new file mode 100644
index 0000000..71f778a
--- /dev/null
+++ b/lib/iolog/iolog_read.c
@@ -0,0 +1,79 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Read from a (possibly compressed) I/O log file.
+ */
+ssize_t
+iolog_read(struct iolog_file *iol, void *buf, size_t nbytes,
+    const char **errstr)
+{
+    ssize_t nread;
+    debug_decl(iolog_read, SUDO_DEBUG_UTIL);
+
+    if (nbytes > UINT_MAX) {
+	errno = EINVAL;
+	if (errstr != NULL)
+	    *errstr = strerror(errno);
+	debug_return_ssize_t(-1);
+    }
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed) {
+	if ((nread = gzread(iol->fd.g, buf, nbytes)) == -1) {
+	    if (errstr != NULL) {
+		int errnum;
+		*errstr = gzerror(iol->fd.g, &errnum);
+		if (errnum == Z_ERRNO)
+		    *errstr = strerror(errno);
+	    }
+	}
+    } else
+#endif
+    {
+	nread = (ssize_t)fread(buf, 1, nbytes, iol->fd.f);
+	if (nread == 0 && ferror(iol->fd.f)) {
+	    nread = -1;
+	    if (errstr != NULL)
+		*errstr = strerror(errno);
+	}
+    }
+    debug_return_ssize_t(nread);
+}
diff --git a/lib/iolog/iolog_seek.c b/lib/iolog/iolog_seek.c
new file mode 100644
index 0000000..928ae6e
--- /dev/null
+++ b/lib/iolog/iolog_seek.c
@@ -0,0 +1,69 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * I/O log wrapper for fseek/gzseek.
+ */
+off_t
+iolog_seek(struct iolog_file *iol, off_t offset, int whence)
+{
+    off_t ret;
+    //debug_decl(iolog_seek, SUDO_DEBUG_UTIL);
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed)
+	ret = gzseek(iol->fd.g, offset, whence);
+    else
+#endif
+	ret = fseeko(iol->fd.f, offset, whence);
+
+    //debug_return_off_t(ret);
+    return ret;
+}
+
+/*
+ * I/O log wrapper for rewind/gzrewind.
+ */
+void
+iolog_rewind(struct iolog_file *iol)
+{
+    debug_decl(iolog_rewind, SUDO_DEBUG_UTIL);
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed)
+	(void)gzrewind(iol->fd.g);
+    else
+#endif
+	rewind(iol->fd.f);
+
+    debug_return;
+}
diff --git a/lib/iolog/iolog_swapids.c b/lib/iolog/iolog_swapids.c
new file mode 100644
index 0000000..a0a3614
--- /dev/null
+++ b/lib/iolog/iolog_swapids.c
@@ -0,0 +1,95 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <time.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+
+/*
+ * Set effective user and group-IDs to iolog_uid and iolog_gid.
+ * If restore flag is set, swap them back.
+ */
+bool
+iolog_swapids(bool restore)
+{
+#ifdef HAVE_SETEUID
+    static uid_t user_euid = (uid_t)-1;
+    static gid_t user_egid = (gid_t)-1;
+    const uid_t iolog_uid = iolog_get_uid();
+    const gid_t iolog_gid = iolog_get_gid();
+    debug_decl(io_swapids, SUDO_DEBUG_UTIL);
+
+    if (user_euid == (uid_t)-1)
+	user_euid = geteuid();
+    if (user_egid == (gid_t)-1)
+	user_egid = getegid();
+
+    if (restore) {
+	if (seteuid(user_euid) == -1) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+		"%s: unable to restore effective uid to %d", __func__,
+		(int)user_euid);
+	    sudo_warn("seteuid() %d -> %d", (int)iolog_uid, (int)user_euid);
+	    debug_return_bool(false);
+	}
+	if (setegid(user_egid) == -1) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+		"%s: unable to restore effective gid to %d", __func__,
+		(int)user_egid);
+	    sudo_warn("setegid() %d -> %d", (int)iolog_gid, (int)user_egid);
+	    debug_return_bool(false);
+	}
+    } else {
+	/* Fail silently if the user has insufficient privileges. */
+	if (setegid(iolog_gid) == -1) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+		"%s: unable to set effective gid to %d", __func__,
+		(int)iolog_gid);
+	    debug_return_bool(false);
+	}
+	if (seteuid(iolog_uid) == -1) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+		"%s: unable to set effective uid to %d", __func__,
+		(int)iolog_uid);
+	    debug_return_bool(false);
+	}
+    }
+    debug_return_bool(true);
+#else
+    return false;
+#endif
+}
diff --git a/lib/iolog/iolog_timing.c b/lib/iolog/iolog_timing.c
new file mode 100644
index 0000000..9eddce8
--- /dev/null
+++ b/lib/iolog/iolog_timing.c
@@ -0,0 +1,273 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+static int timing_event_adj;
+
+void
+iolog_adjust_delay(struct timespec *delay, struct timespec *max_delay,
+     double scale_factor)
+{
+    double seconds;
+    debug_decl(iolog_adjust_delay, SUDO_DEBUG_UTIL);
+
+    if (scale_factor != 1.0) {
+	/* Order is important: we don't want to double the remainder. */
+        seconds = (double)delay->tv_sec / scale_factor;
+        delay->tv_sec = (time_t)seconds;
+        delay->tv_nsec /= scale_factor;
+        delay->tv_nsec += (seconds - delay->tv_sec) * 1000000000;
+        while (delay->tv_nsec >= 1000000000) {
+            delay->tv_sec++;
+            delay->tv_nsec -= 1000000000;
+        }
+    }
+
+    /* Clamp to max delay. */
+    if (max_delay != NULL) {
+	if (sudo_timespeccmp(delay, max_delay, >)) {
+	    delay->tv_sec = max_delay->tv_sec;
+	    delay->tv_nsec = max_delay->tv_nsec;
+	}
+    }
+
+    debug_return;
+}
+
+/*
+ * Parse the delay as seconds and nanoseconds: %lld.%09ld
+ * Sudo used to write this as a double, but since timing data is logged
+ * in the C locale this may not match the current locale.
+ */
+char *
+iolog_parse_delay(const char *cp, struct timespec *delay,
+    const char *decimal_point)
+{
+    char numbuf[(((sizeof(long long) * 8) + 2) / 3) + 2];
+    const char *errstr, *ep;
+    long long llval;
+    size_t len;
+    debug_decl(iolog_parse_delay, SUDO_DEBUG_UTIL);
+
+    /* Parse seconds (whole number portion). */
+    for (ep = cp; isdigit((unsigned char)*ep); ep++)
+	continue;
+    len = (size_t)(ep - cp);
+    if (len >= sizeof(numbuf)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: number of seconds is too large", cp);
+	debug_return_ptr(NULL);
+    }
+    memcpy(numbuf, cp, len);
+    numbuf[len] = '\0';
+    delay->tv_sec = sudo_strtonum(numbuf, 0, TIME_T_MAX, &errstr);
+    if (errstr != NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: number of seconds is %s", numbuf, errstr);
+	debug_return_ptr(NULL);
+    }
+
+    /* Radix may be in user's locale for sudo < 1.7.4 so accept that too. */
+    if (*ep != '.' && *ep != *decimal_point) {
+	if (*ep == '\0' || isspace((unsigned char)*ep)) {
+	    /* No fractional part. */
+	    delay->tv_nsec = 0;
+	    goto done;
+	}
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "invalid characters after seconds: %s", ep);
+	debug_return_ptr(NULL);
+    }
+    cp = ep + 1;
+
+    /* Parse fractional part, we may read more precision than we can store. */
+    for (ep = cp; isdigit((unsigned char)*ep); ep++)
+	continue;
+    len = (size_t)(ep - cp);
+    if (len >= sizeof(numbuf)) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: number of nanoseconds is too large", cp);
+	debug_return_ptr(NULL);
+    }
+    memcpy(numbuf, cp, len);
+    numbuf[len] = '\0';
+    llval = sudo_strtonum(numbuf, 0, LLONG_MAX, &errstr);
+    if (errstr != NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: number of nanoseconds is %s", numbuf, errstr);
+	debug_return_ptr(NULL);
+    }
+
+    /* Adjust fractional part to nanosecond precision. */
+    if (len < 9) {
+	/* Convert to nanosecond precision. */
+	do {
+	    llval *= 10;
+	} while (++len < 9);
+    } else if (len > 9) {
+	/* Clamp to nanoseconds. */
+	do {
+	    llval /= 10;
+	} while (--len > 9);
+    }
+    delay->tv_nsec = (long)llval;
+
+done:
+    /* Advance to the next field. */
+    while (isspace((unsigned char)*ep))
+	ep++;
+
+    debug_return_str((char *)ep);
+}
+
+/*
+ * Parse a timing line, which is formatted as:
+ *	IO_EVENT_TTYOUT sleep_time num_bytes
+ *	IO_EVENT_WINSIZE sleep_time lines cols
+ *	IO_EVENT_SUSPEND sleep_time signo
+ * Where type is IO_EVENT_*, sleep_time is the number of seconds to sleep
+ * before writing the data and num_bytes is the number of bytes to output.
+ * Returns true on success and false on failure.
+ */
+bool
+iolog_parse_timing(const char *line, struct timing_closure *timing)
+{
+    unsigned long ulval;
+    char *cp, *ep;
+    debug_decl(iolog_parse_timing, SUDO_DEBUG_UTIL);
+
+    /* Clear iolog descriptor. */
+    timing->iol = NULL;
+
+    /* Parse event type. */
+    ulval = strtoul(line, &ep, 10);
+    if (ep == line || !isspace((unsigned char) *ep))
+	goto bad;
+    if (ulval >= IO_EVENT_COUNT)
+	goto bad;
+    if (ulval == IO_EVENT_TTYOUT_1_8_7) {
+	/* work around a bug in timing files generated by sudo 1.8.7 */
+	timing_event_adj = 2;
+    }
+    timing->event = (int)ulval - timing_event_adj;
+    for (cp = ep + 1; isspace((unsigned char) *cp); cp++)
+	continue;
+
+    /* Parse delay, returns the next field or NULL on error. */
+    if ((cp = iolog_parse_delay(cp, &timing->delay, timing->decimal)) == NULL)
+	goto bad;
+
+    switch (timing->event) {
+    case IO_EVENT_SUSPEND:
+	/* Signal name (no leading SIG prefix) or number. */
+	if (str2sig(cp, &timing->u.signo) == -1)
+	    goto bad;
+	break;
+    case IO_EVENT_WINSIZE:
+	ulval = strtoul(cp, &ep, 10);
+	if (ep == cp || !isspace((unsigned char) *ep))
+	    goto bad;
+	if (ulval > INT_MAX)
+	    goto bad;
+	timing->u.winsize.lines = (int)ulval;
+	for (cp = ep + 1; isspace((unsigned char) *cp); cp++)
+	    continue;
+
+	ulval = strtoul(cp, &ep, 10);
+	if (ep == cp || *ep != '\0')
+	    goto bad;
+	if (ulval > INT_MAX)
+	    goto bad;
+	timing->u.winsize.cols = (int)ulval;
+	break;
+    default:
+	errno = 0;
+	ulval = strtoul(cp, &ep, 10);
+	if (ep == cp || *ep != '\0')
+	    goto bad;
+	/* Note: assumes SIZE_MAX == ULONG_MAX */
+	if (errno == ERANGE && ulval == ULONG_MAX)
+	    goto bad;
+	timing->u.nbytes = (size_t)ulval;
+	break;
+    }
+
+    debug_return_bool(true);
+bad:
+    debug_return_bool(false);
+}
+
+/*
+ * Read the next record from the timing file.
+ * Return 0 on success, 1 on EOF and -1 on error.
+ */
+int
+iolog_read_timing_record(struct iolog_file *iol, struct timing_closure *timing)
+{
+    char line[LINE_MAX];
+    const char *errstr;
+    debug_decl(iolog_read_timing_record, SUDO_DEBUG_UTIL);
+
+    /* Read next record from timing file. */
+    if (iolog_gets(iol, line, sizeof(line), &errstr) == NULL) {
+	/* EOF or error reading timing file, we are done. */
+	if (iolog_eof(iol))
+	    debug_return_int(1);
+	sudo_warnx(U_("error reading timing file: %s"), errstr);
+	debug_return_int(-1);
+    }
+
+    /* Parse timing file record. */
+    line[strcspn(line, "\n")] = '\0';
+    if (!iolog_parse_timing(line, timing)) {
+	sudo_warnx(U_("invalid timing file line: %s"), line);
+	debug_return_int(-1);
+    }
+
+    debug_return_int(0);
+}
diff --git a/lib/iolog/iolog_util.c b/lib/iolog/iolog_util.c
new file mode 100644
index 0000000..bb1dde8
--- /dev/null
+++ b/lib/iolog/iolog_util.c
@@ -0,0 +1,74 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Map IOFD_* -> name.
+ */
+const char *
+iolog_fd_to_name(int iofd)
+{
+    const char *ret;
+    debug_decl(iolog_fd_to_name, SUDO_DEBUG_UTIL);
+
+    switch (iofd) {
+    case IOFD_STDIN:
+	ret = "stdin";
+	break;
+    case IOFD_STDOUT:
+	ret = "stdout";
+	break;
+    case IOFD_STDERR:
+	ret = "stderr";
+	break;
+    case IOFD_TTYIN:
+	ret = "ttyin";
+	break;
+    case IOFD_TTYOUT:
+	ret = "ttyout";
+	break;
+    case IOFD_TIMING:
+	ret = "timing";
+	break;
+    default:
+	ret = "unknown";
+	sudo_debug_printf(SUDO_DEBUG_ERROR, "%s: unexpected iofd %d",
+	    __func__, iofd);
+	break;
+    }
+    debug_return_const_str(ret);
+}
diff --git a/lib/iolog/iolog_write.c b/lib/iolog/iolog_write.c
new file mode 100644
index 0000000..82a3f6d
--- /dev/null
+++ b/lib/iolog/iolog_write.c
@@ -0,0 +1,105 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_iolog.h"
+
+/*
+ * Write to an I/O log, optionally compressing.
+ */
+ssize_t
+iolog_write(struct iolog_file *iol, const void *buf, size_t len,
+    const char **errstr)
+{
+    ssize_t ret;
+    debug_decl(iolog_write, SUDO_DEBUG_UTIL);
+
+    if (len > UINT_MAX) {
+	errno = EINVAL;
+	if (errstr != NULL)
+	    *errstr = strerror(errno);
+	debug_return_ssize_t(-1);
+    }
+
+#ifdef HAVE_ZLIB_H
+    if (iol->compressed) {
+	int errnum;
+
+	ret = gzwrite(iol->fd.g, (const voidp)buf, len);
+	if (ret == 0) {
+	    ret = -1;
+	    if (errstr != NULL) {
+		*errstr = gzerror(iol->fd.g, &errnum);
+		if (errnum == Z_ERRNO)
+		    *errstr = strerror(errno);
+	    }
+	    goto done;
+	}
+	if (iolog_get_flush()) {
+	    if (gzflush(iol->fd.g, Z_SYNC_FLUSH) != Z_OK) {
+		ret = -1;
+		if (errstr != NULL) {
+		    *errstr = gzerror(iol->fd.g, &errnum);
+		    if (errnum == Z_ERRNO)
+			*errstr = strerror(errno);
+		}
+		goto done;
+	    }
+	}
+    } else
+#endif
+    {
+	ret = fwrite(buf, 1, len, iol->fd.f);
+	if (ret == 0) {
+	    ret = -1;
+	    if (errstr != NULL)
+		*errstr = strerror(errno);
+	    goto done;
+	}
+	if (iolog_get_flush()) {
+	    if (fflush(iol->fd.f) != 0) {
+		ret = -1;
+		if (errstr != NULL)
+		    *errstr = strerror(errno);
+		goto done;
+	    }
+	}
+    }
+
+done:
+    debug_return_ssize_t(ret);
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/id.json b/lib/iolog/regress/corpus/seed/log_json/id.json
new file mode 100644
index 0000000..5655639
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/id.json
@@ -0,0 +1,36 @@
+{
+    "timestamp": {
+        "seconds": 1603746837,
+        "nanoseconds": 16450063
+    },
+    "columns": 80,
+    "command": "/usr/bin/id",
+    "lines": 24,
+    "runargv": [
+        "id"
+    ],
+    "runenv": [
+        "PATH=/home/millert/bin/OpenBSD.amd64:/home/millert/bin:/home/millert/bin/scripts:/home/millert/node_modules/.bin:/usr/local/gnu/bin:/usr/local/bin:/usr/local/sbin:/usr/local/etc:/usr/local/rcs/bin:/usr/local/nmh/bin:/usr/local/news/bin:/usr/local/emacs/bin:/usr/local/netpbm/bin:/usr/local/mtools/bin:/usr/local/netscape/bin:/usr/local/ghostscript/bin:/usr/local/frame-5.5.6/bin:/usr/local/teTeX/bin:/usr/local/cvs-1.10.1/bin:/usr/local/games/bin:/usr/local/archivers/bin:/usr/local/skey/bin:/usr/local/audio/bin:/usr/local/rtty/bin:/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/X11R6/bin:/usr/local/bin:/usr/obj/bin:/usr/src/bin",
+        "TERM=xterm-color",
+        "LANG=en_US.UTF-8",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/id",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "KRB5CCNAME=bogus"
+    ],
+    "runuid": 0,
+    "rungid": 0,
+    "runcwd": "/usr/src/local/millert/sudo/trunk/lib/eventlog/regress",
+    "runuser": "root",
+    "rungroup": "wheel",
+    "submitcwd": "/usr/src/local/millert/sudo/trunk/lib/eventlog/regress",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/ttypb"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/ls.json b/lib/iolog/regress/corpus/seed/log_json/ls.json
new file mode 100644
index 0000000..17c99d8
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/ls.json
@@ -0,0 +1,31 @@
+{
+    "timestamp": {
+        "seconds": 1584790549,
+        "nanoseconds": 782859154
+    },
+    "columns": 80,
+    "command": "/bin/ls",
+    "lines": 24,
+    "runargv": [ "ls" ],
+    "runenv": [
+        "LANG=en_US.UTF-8",
+        "TERM=tmux",
+        "PATH=/home/millert/bin/OpenBSD.amd64:/home/millert/bin:/home/millert/bin/scripts:/home/millert/node_modules/.bin:/usr/local/gnu/bin:/usr/local/bin:/usr/local/sbin:/usr/local/etc:/usr/local/rcs/bin:/usr/local/nmh/bin:/usr/local/news/bin:/usr/local/emacs/bin:/usr/local/netpbm/bin:/usr/local/mtools/bin:/usr/local/netscape/bin:/usr/local/ghostscript/bin:/usr/local/frame-5.5.6/bin:/usr/local/teTeX/bin:/usr/local/cvs-1.10.1/bin:/usr/local/games/bin:/usr/local/archivers/bin:/usr/local/skey/bin:/usr/local/audio/bin:/usr/local/rtty/bin:/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/X11R6/bin:/usr/local/bin:/usr/obj/bin:/usr/src/bin",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/bin/ls",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "KRB5CCNAME=bogus"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/usr/src/local/millert/hg/sudo/1.7",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/ttyp3"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/mailq.json b/lib/iolog/regress/corpus/seed/log_json/mailq.json
new file mode 100644
index 0000000..669090d
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/mailq.json
@@ -0,0 +1,31 @@
+{
+    "timestamp": {
+        "seconds": 1584884264,
+        "nanoseconds": 499794755
+    },
+    "columns": 80,
+    "command": "/usr/bin/mailq",
+    "lines": 24,
+    "runargv": [ "mailq" ],
+    "runenv": [
+        "LANG=en_US.UTF-8",
+        "PATH=/home/millert/bin/OpenBSD.amd64:/home/millert/bin:/home/millert/bin/scripts:/home/millert/node_modules/.bin:/usr/local/gnu/bin:/usr/local/bin:/usr/local/sbin:/usr/local/etc:/usr/local/rcs/bin:/usr/local/nmh/bin:/usr/local/news/bin:/usr/local/emacs/bin:/usr/local/netpbm/bin:/usr/local/mtools/bin:/usr/local/netscape/bin:/usr/local/ghostscript/bin:/usr/local/frame-5.5.6/bin:/usr/local/teTeX/bin:/usr/local/cvs-1.10.1/bin:/usr/local/games/bin:/usr/local/archivers/bin:/usr/local/skey/bin:/usr/local/audio/bin:/usr/local/rtty/bin:/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/X11R6/bin:/usr/local/bin:/usr/obj/bin:/usr/src/bin",
+        "TERM=tmux",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/mailq",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "KRB5CCNAME=bogus"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/home/millert",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/ttyp3"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/make.json b/lib/iolog/regress/corpus/seed/log_json/make.json
new file mode 100644
index 0000000..dcc4736
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/make.json
@@ -0,0 +1,36 @@
+{
+    "timestamp": {
+        "seconds": 1584977889,
+        "nanoseconds": 510217787
+    },
+    "columns": 80,
+    "command": "/usr/bin/make",
+    "lines": 24,
+    "runargv": [
+        "make",
+        "-C",
+        "/usr/src/usr.bin/sort",
+        "install"
+    ],
+    "runenv": [
+        "PATH=/home/millert/bin/OpenBSD.amd64:/home/millert/bin:/home/millert/bin/scripts:/home/millert/node_modules/.bin:/usr/local/gnu/bin:/usr/local/bin:/usr/local/sbin:/usr/local/etc:/usr/local/rcs/bin:/usr/local/nmh/bin:/usr/local/news/bin:/usr/local/emacs/bin:/usr/local/netpbm/bin:/usr/local/mtools/bin:/usr/local/netscape/bin:/usr/local/ghostscript/bin:/usr/local/frame-5.5.6/bin:/usr/local/teTeX/bin:/usr/local/cvs-1.10.1/bin:/usr/local/games/bin:/usr/local/archivers/bin:/usr/local/skey/bin:/usr/local/audio/bin:/usr/local/rtty/bin:/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/X11R6/bin:/usr/local/bin:/usr/obj/bin:/usr/src/bin",
+        "TERM=xterm-color",
+        "LANG=en_US.UTF-8",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/make -C /usr/src/usr.bin/sort install",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "KRB5CCNAME=bogus"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/home/millert/tmp/src/usr.bin/sort",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/ttypi"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/pkg_add.json b/lib/iolog/regress/corpus/seed/log_json/pkg_add.json
new file mode 100644
index 0000000..bfebc76
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/pkg_add.json
@@ -0,0 +1,34 @@
+{
+    "timestamp": {
+        "seconds": 1595281300,
+        "nanoseconds": 130458256
+    },
+    "columns": 80,
+    "command": "/usr/sbin/pkg_add",
+    "lines": 24,
+    "runargv": [
+        "pkg_add",
+        "p5-PDF-API2"
+    ],
+    "runenv": [
+        "PATH=/home/millert/bin/OpenBSD.amd64:/home/millert/bin:/home/millert/bin/scripts:/home/millert/node_modules/.bin:/usr/local/gnu/bin:/usr/local/bin:/usr/local/sbin:/usr/local/etc:/usr/local/rcs/bin:/usr/local/nmh/bin:/usr/local/news/bin:/usr/local/emacs/bin:/usr/local/netpbm/bin:/usr/local/mtools/bin:/usr/local/netscape/bin:/usr/local/ghostscript/bin:/usr/local/frame-5.5.6/bin:/usr/local/teTeX/bin:/usr/local/cvs-1.10.1/bin:/usr/local/games/bin:/usr/local/archivers/bin:/usr/local/skey/bin:/usr/local/audio/bin:/usr/local/rtty/bin:/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/X11R6/bin:/usr/local/bin:/usr/obj/bin:/usr/src/bin",
+        "TERM=xterm-color",
+        "LANG=en_US.UTF-8",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/sbin/pkg_add p5-PDF-API2",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "KRB5CCNAME=bogus"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/usr/src/local/Music/chordpro",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/ttypd"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/pkg_delete.json b/lib/iolog/regress/corpus/seed/log_json/pkg_delete.json
new file mode 100644
index 0000000..f0e4fba
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/pkg_delete.json
@@ -0,0 +1,34 @@
+{
+    "timestamp": {
+        "seconds": 1595620314,
+        "nanoseconds": 965982512
+    },
+    "columns": 80,
+    "command": "/usr/sbin/pkg_delete",
+    "lines": 24,
+    "runargv": [
+        "pkg_delete",
+        "chordpro"
+    ],
+    "runenv": [
+        "PATH=/home/millert/bin/OpenBSD.amd64:/home/millert/bin:/home/millert/bin/scripts:/home/millert/node_modules/.bin:/usr/local/gnu/bin:/usr/local/bin:/usr/local/sbin:/usr/local/etc:/usr/local/rcs/bin:/usr/local/nmh/bin:/usr/local/news/bin:/usr/local/emacs/bin:/usr/local/netpbm/bin:/usr/local/mtools/bin:/usr/local/netscape/bin:/usr/local/ghostscript/bin:/usr/local/frame-5.5.6/bin:/usr/local/teTeX/bin:/usr/local/cvs-1.10.1/bin:/usr/local/games/bin:/usr/local/archivers/bin:/usr/local/skey/bin:/usr/local/audio/bin:/usr/local/rtty/bin:/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/X11R6/bin:/usr/local/bin:/usr/obj/bin:/usr/src/bin",
+        "TERM=xterm-color",
+        "LANG=en_US.UTF-8",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/sbin/pkg_delete chordpro",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "KRB5CCNAME=bogus"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/usr/ports/textproc/chordpro/pkg",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/ttypd"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_json/printenv.json b/lib/iolog/regress/corpus/seed/log_json/printenv.json
new file mode 100644
index 0000000..6e78719
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_json/printenv.json
@@ -0,0 +1,34 @@
+{
+    "timestamp": {
+        "seconds": 1601411718,
+        "nanoseconds": 269131020
+    },
+    "columns": 80,
+    "command": "/usr/bin/printenv",
+    "lines": 24,
+    "runargv": [
+        "/usr/bin/printenv"
+    ],
+    "runenv": [
+        "KRB5CCNAME=bogus",
+        "LANG=en_US.UTF-8",
+        "PATH=/tmp",
+        "TERM=xterm-color",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/printenv",
+        "SUDO_USER=testdude",
+        "SUDO_UID=1000",
+        "SUDO_GID=1000"
+    ],
+    "runuid": 0,
+    "runcwd": "/usr/src/local/millert/sudo/trunk/plugins/sudoers",
+    "runuser": "root",
+    "submitcwd": "/usr/src/local/millert/sudo/trunk/plugins/sudoers",
+    "submithost": "xerxes.sudo.ws",
+    "submituser": "testdude",
+    "ttyname": "/dev/ttypb"
+}
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/id.log b/lib/iolog/regress/corpus/seed/log_legacy/id.log
new file mode 100644
index 0000000..e59965e
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/id.log
@@ -0,0 +1,3 @@
+1603746837:millert:root::/dev/ttypb:24:80
+/usr/src/local/millert/sudo/trunk/lib/eventlog/regress
+/usr/bin/id
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/less.log b/lib/iolog/regress/corpus/seed/log_legacy/less.log
new file mode 100644
index 0000000..66e2929
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/less.log
@@ -0,0 +1,3 @@
+1611859113:bob:bob:ldap:/dev/console:24:80
+/var/tmp
+/usr/bin/less /etc/ldapd.conf
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/ls.log b/lib/iolog/regress/corpus/seed/log_legacy/ls.log
new file mode 100644
index 0000000..808605c
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/ls.log
@@ -0,0 +1,3 @@
+1584790549:millert:root::/dev/ttyp3:24:80
+/usr/src/local/millert/hg/sudo/1.7
+/bin/ls
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/mailq.log b/lib/iolog/regress/corpus/seed/log_legacy/mailq.log
new file mode 100644
index 0000000..9b1fdd6
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/mailq.log
@@ -0,0 +1,3 @@
+1584884264:millert:root::/dev/ttyp3:24:80
+/home/millert
+/usr/bin/mailq
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/make.log b/lib/iolog/regress/corpus/seed/log_legacy/make.log
new file mode 100644
index 0000000..c27798a
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/make.log
@@ -0,0 +1,3 @@
+1584977889:millert:root::/dev/ttypi:24:80
+/home/millert/tmp/src/usr.bin/sort
+/usr/bin/make -C /usr/src/usr.bin/sort install
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/pkg_add.log b/lib/iolog/regress/corpus/seed/log_legacy/pkg_add.log
new file mode 100644
index 0000000..78358e7
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/pkg_add.log
@@ -0,0 +1,3 @@
+1595281300:millert:root::/dev/ttypd:24:80
+/usr/src/local/Music/chordpro
+/usr/sbin/pkg_add p5-PDF-API2
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/pkg_delete.log b/lib/iolog/regress/corpus/seed/log_legacy/pkg_delete.log
new file mode 100644
index 0000000..ce0899a
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/pkg_delete.log
@@ -0,0 +1,3 @@
+1595620314:millert:root::/dev/ttypd:24:80
+/usr/ports/textproc/chordpro/pkg
+/usr/sbin/pkg_delete chordpro
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/printenv.log b/lib/iolog/regress/corpus/seed/log_legacy/printenv.log
new file mode 100644
index 0000000..dbc739a
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/printenv.log
@@ -0,0 +1,3 @@
+1601411718:testdude:root::/dev/ttypb:24:80
+/usr/src/local/millert/sudo/trunk/plugins/sudoers
+/usr/bin/printenv
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/smtpctl.log b/lib/iolog/regress/corpus/seed/log_legacy/smtpctl.log
new file mode 100644
index 0000000..d365617
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/smtpctl.log
@@ -0,0 +1,3 @@
+1666108884:aemon:root::/dev/pts/4:64:128
+/home/aemon
+/usr/sbin/smtpctl remove 272a4d27e1fd732e
diff --git a/lib/iolog/regress/corpus/seed/log_legacy/vi.log b/lib/iolog/regress/corpus/seed/log_legacy/vi.log
new file mode 100644
index 0000000..c95f061
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/log_legacy/vi.log
@@ -0,0 +1,3 @@
+1611849879:alice:root::/dev/pts/0:24:80
+/export/home/alice
+/usr/bin/vi /etc/nsswitch.conf
diff --git a/lib/iolog/regress/corpus/seed/timing/timing.1 b/lib/iolog/regress/corpus/seed/timing/timing.1
new file mode 100644
index 0000000..e954cda
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/timing/timing.1
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new file mode 100644
index 0000000..d3e8da0
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diff --git a/lib/iolog/regress/corpus/seed/timing/timing.3 b/lib/iolog/regress/corpus/seed/timing/timing.3
new file mode 100644
index 0000000..4034898
--- /dev/null
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new file mode 100644
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new file mode 100644
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diff --git a/lib/iolog/regress/corpus/seed/timing/timing.7 b/lib/iolog/regress/corpus/seed/timing/timing.7
new file mode 100644
index 0000000..320a868
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/timing/timing.7
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diff --git a/lib/iolog/regress/corpus/seed/timing/timing.8 b/lib/iolog/regress/corpus/seed/timing/timing.8
new file mode 100644
index 0000000..5fabcc4
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/timing/timing.8
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diff --git a/lib/iolog/regress/corpus/seed/timing/timing.9 b/lib/iolog/regress/corpus/seed/timing/timing.9
new file mode 100644
index 0000000..2d566ba
--- /dev/null
+++ b/lib/iolog/regress/corpus/seed/timing/timing.9
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+7 2.677917273 CONT
+4 0.001090445 7
+4 0.000695543 914
+3 1.566157098 1
+3 0.130276992 1
+4 0.003990123 27
+3 0.201715122 1
+4 0.000382345 105
+3 0.239728138 1
+4 0.000703854 15
+3 0.183585413 1
+4 0.001608753 22
+3 0.198057579 1
+4 0.000422730 37
+3 0.167314657 1
+4 0.101159452 31
+3 0.043125007 1
+4 0.000340134 16
+3 0.167883234 1
+3 0.056208548 1
+4 0.001792780 28
+3 0.317497649 1
+4 0.000387046 17
+3 0.103776317 1
+4 0.000373976 17
+3 0.135697848 1
+4 0.000467905 17
+3 0.135580381 1
+4 0.000480750 17
+3 0.031618064 1
+4 0.000861943 17
+3 0.110813826 1
+4 0.000349600 17
+3 0.183789669 1
+4 0.000339386 31
+3 0.216650735 1
+4 0.112823566 32
+3 0.174864673 1
+4 0.003063388 10
+3 0.180669765 1
+4 0.001724638 1
+3 0.174368732 1
+4 0.002114123 1
+3 0.134554835 1
+4 0.002041362 1
+4 0.001560387 71
+3 0.980188224 1
+3 0.135913384 1
+4 0.002612273 41
diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_json.c b/lib/iolog/regress/fuzz/fuzz_iolog_json.c
new file mode 100644
index 0000000..80f6c9f
--- /dev/null
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_json.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+
+#include "iolog_json.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+static FILE *
+open_data(const uint8_t *data, size_t size)
+{
+#ifdef HAVE_FMEMOPEN
+    /* Operate in-memory. */
+    return fmemopen((void *)data, size, "r");
+#else
+    char tempfile[] = "/tmp/json.XXXXXX";
+    size_t nwritten;
+    int fd;
+
+    /* Use (unlinked) temporary file. */
+    fd = mkstemp(tempfile);
+    if (fd == -1)
+	return NULL;
+    unlink(tempfile);
+    nwritten = write(fd, data, size);
+    if (nwritten != size) {
+	close(fd);
+	return NULL;
+    }
+    lseek(fd, 0, SEEK_SET);
+    return fdopen(fd, "r");
+#endif
+}
+
+static int
+fuzz_conversation(int num_msgs, const struct sudo_conv_message msgs[],
+    struct sudo_conv_reply replies[], struct sudo_conv_callback *callback)
+{
+    int n;
+
+    for (n = 0; n < num_msgs; n++) {
+	const struct sudo_conv_message *msg = &msgs[n];
+
+	switch (msg->msg_type & 0xff) {
+	    case SUDO_CONV_PROMPT_ECHO_ON:
+	    case SUDO_CONV_PROMPT_MASK:
+	    case SUDO_CONV_PROMPT_ECHO_OFF:
+		/* input not supported */
+		return -1;
+	    case SUDO_CONV_ERROR_MSG:
+	    case SUDO_CONV_INFO_MSG:
+		/* no output for fuzzers */
+		break;
+	    default:
+		return -1;
+	}
+    }
+    return 0;
+}
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    struct eventlog *evlog = NULL;
+    FILE *fp;
+
+    initprogname("fuzz_iolog_json");
+    if (getenv("SUDO_FUZZ_VERBOSE") == NULL)
+	sudo_warn_set_conversation(fuzz_conversation);
+
+    fp = open_data(data, size);
+    if (fp == NULL)
+        return 0;
+
+    /* Parsed contents of an log.json file are stored in evlog. */
+    evlog = calloc(1, sizeof(*evlog));
+    if (evlog != NULL) {
+	evlog->runuid = (uid_t)-1;
+	evlog->rungid = (gid_t)-1;
+	evlog->exit_value = -1;
+
+	/* Try to parse buffer as a JSON-format I/O log info file. */
+	iolog_parse_loginfo_json(fp, "fuzz.json", evlog);
+	eventlog_free(evlog);
+    }
+    fclose(fp);
+
+    fflush(stdout);
+
+    return 0;
+}
diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_json.dict b/lib/iolog/regress/fuzz/fuzz_iolog_json.dict
new file mode 100644
index 0000000..2caf63d
--- /dev/null
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_json.dict
@@ -0,0 +1,21 @@
+# I/O log JSON keywords
+"\"columns\""
+"\"command\""
+"\"dumped_core\""
+"\"exit_value\""
+"\"lines\""
+"\"run_time\""
+"\"runargv\""
+"\"runenv\""
+"\"rungid\""
+"\"rungroup\""
+"\"runuid\""
+"\"runuser\""
+"\"runchroot\""
+"\"runcwd\""
+"\"signal\""
+"\"submitcwd\""
+"\"submithost\""
+"\"submituser\""
+"\"timestamp\""
+"\"ttyname\"""
diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_legacy.c b/lib/iolog/regress/fuzz/fuzz_iolog_legacy.c
new file mode 100644
index 0000000..207374c
--- /dev/null
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_legacy.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+static FILE *
+open_data(const uint8_t *data, size_t size)
+{
+#ifdef HAVE_FMEMOPEN
+    /* Operate in-memory. */
+    return fmemopen((void *)data, size, "r");
+#else
+    char tempfile[] = "/tmp/legacy.XXXXXX";
+    size_t nwritten;
+    int fd;
+
+    /* Use (unlinked) temporary file. */
+    fd = mkstemp(tempfile);
+    if (fd == -1)
+	return NULL;
+    unlink(tempfile);
+    nwritten = write(fd, data, size);
+    if (nwritten != size) {
+	close(fd);
+	return NULL;
+    }
+    lseek(fd, 0, SEEK_SET);
+    return fdopen(fd, "r");
+#endif
+}
+
+static int
+fuzz_conversation(int num_msgs, const struct sudo_conv_message msgs[],
+    struct sudo_conv_reply replies[], struct sudo_conv_callback *callback)
+{
+    int n;
+
+    for (n = 0; n < num_msgs; n++) {
+	const struct sudo_conv_message *msg = &msgs[n];
+
+	switch (msg->msg_type & 0xff) {
+	    case SUDO_CONV_PROMPT_ECHO_ON:
+	    case SUDO_CONV_PROMPT_MASK:
+	    case SUDO_CONV_PROMPT_ECHO_OFF:
+		/* input not supported */
+		return -1;
+	    case SUDO_CONV_ERROR_MSG:
+	    case SUDO_CONV_INFO_MSG:
+		/* no output for fuzzers */
+		break;
+	    default:
+		return -1;
+	}
+    }
+    return 0;
+}
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    struct eventlog *evlog = NULL;
+    FILE *fp;
+
+    initprogname("fuzz_iolog_legacy");
+    if (getenv("SUDO_FUZZ_VERBOSE") == NULL)
+	sudo_warn_set_conversation(fuzz_conversation);
+
+    fp = open_data(data, size);
+    if (fp == NULL)
+        return 0;
+
+    /* Parsed contents of an I/O log info file are stored in evlog. */
+    evlog = calloc(1, sizeof(*evlog));
+    if (evlog != NULL) {
+	evlog->runuid = (uid_t)-1;
+	evlog->rungid = (gid_t)-1;
+
+	/* Try to parse buffer as a legacy-format I/O log info file. */
+	iolog_parse_loginfo_legacy(fp, "fuzz.legacy", evlog);
+	eventlog_free(evlog);
+    }
+    fclose(fp);
+    fflush(stdout);
+
+    return 0;
+}
diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_legacy.dict b/lib/iolog/regress/fuzz/fuzz_iolog_legacy.dict
new file mode 100644
index 0000000..d524d49
--- /dev/null
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_legacy.dict
@@ -0,0 +1,42 @@
+# Legacy I/O log info file:
+# timestamp:submit_user:run_user:run_group:tty:lines:columns
+# working directory
+# command [args]
+
+# users and groups
+"millert"
+"root"
+"bin"
+"wheel"
+"operator"
+"testuser"
+"alice"
+"bob"
+"users"
+
+# terminals
+"/dev/console"
+"/dev/tty00"
+"/dev/tty01"
+"/dev/pts/0"
+"/dev/pts/1"
+"/dev/ttyp2"
+"/dev/ttyp3"
+
+# directories
+"/root"
+"/home/millert"
+"/home/alice"
+"/home/bob"
+"/tmp"
+"/usr/local"
+"/usr/src"
+
+# commands
+"/bin/ls"
+"/usr/bin/id -u"
+"/usr/bin/su -"
+"/usr/bin/mailq"
+"/usr/bin/make -C /usr/src/usr.bin/sort install"
+"/usr/bin/apt update"
+"/usr/bin/rpm -e sudo"
diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_timing.c b/lib/iolog/regress/fuzz/fuzz_iolog_timing.c
new file mode 100644
index 0000000..dac9736
--- /dev/null
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_timing.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_eventlog.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+static int
+fuzz_conversation(int num_msgs, const struct sudo_conv_message msgs[],
+    struct sudo_conv_reply replies[], struct sudo_conv_callback *callback)
+{
+    int n;
+
+    for (n = 0; n < num_msgs; n++) {
+	const struct sudo_conv_message *msg = &msgs[n];
+
+	switch (msg->msg_type & 0xff) {
+	    case SUDO_CONV_PROMPT_ECHO_ON:
+	    case SUDO_CONV_PROMPT_MASK:
+	    case SUDO_CONV_PROMPT_ECHO_OFF:
+		/* input not supported */
+		return -1;
+	    case SUDO_CONV_ERROR_MSG:
+	    case SUDO_CONV_INFO_MSG:
+		/* no output for fuzzers */
+		break;
+	    default:
+		return -1;
+	}
+    }
+    return 0;
+}
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    struct iolog_file iolog_file = { true };
+    struct timing_closure closure;
+    char logdir[] = "/tmp/timing.XXXXXX";
+    int dfd = -1, fd = -1;
+
+    initprogname("fuzz_iolog_timing");
+    if (getenv("SUDO_FUZZ_VERBOSE") == NULL)
+	sudo_warn_set_conversation(fuzz_conversation);
+
+    /* I/O logs consist of multiple files in a directory. */
+    if (mkdtemp(logdir) == NULL)
+	return 0;
+
+    /* Create a timing file from the supplied data. */
+    dfd = open(logdir, O_RDONLY);
+    if (dfd == -1)
+	goto cleanup;
+
+    fd = openat(dfd, "timing", O_WRONLY|O_CREAT|O_EXCL, S_IRWXU);
+    if (fd == -1)
+	goto cleanup;
+
+    if (write(fd, data, size) != (ssize_t)size)
+	goto cleanup;
+    close(fd);
+    fd = -1;
+
+    /* Open the timing file we wrote and try to parse it. */
+    if (!iolog_open(&iolog_file, dfd, IOFD_TIMING, "r"))
+	goto cleanup;
+
+    memset(&closure, 0, sizeof(closure));
+    closure.decimal = ".";
+    for (;;) {
+	if (iolog_read_timing_record(&iolog_file, &closure) != 0)
+	    break;
+    }
+    iolog_close(&iolog_file, NULL);
+
+cleanup:
+    if (dfd != -1) {
+	if (fd != -1)
+	    close(fd);
+	unlinkat(dfd, "timing", 0);
+	close(dfd);
+    }
+    rmdir(logdir);
+    fflush(stdout);
+
+    return 0;
+}
+
+/* STUB */
+bool
+iolog_swapids(bool restore)
+{
+    return false;
+}
diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_timing.dict b/lib/iolog/regress/fuzz/fuzz_iolog_timing.dict
new file mode 100644
index 0000000..42bdeb5
--- /dev/null
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_timing.dict
@@ -0,0 +1,89 @@
+# I/O log timing lines are formatted as:
+#   [0-4] sleep_time num_bytes
+#   5 sleep_time lines cols
+#   7 sleep_time signum|sigabbrev
+
+# Signal abbreviations
+"ABRT"
+"ALRM"
+"BUS"
+"CANCEL"
+"CHLD"
+"CLD"
+"CONT"
+"CONT"
+"EMT"
+"FPE"
+"FREEZE"
+"HUP"
+"ILL"
+"INFO"
+"INT"
+"IO"
+"IOT"
+"KILL"
+"LOST"
+"LWP"
+"PIPE"
+"POLL"
+"PROF"
+"PWR"
+"QUIT"
+"SEGV"
+"STKFLT"
+"STOP"
+"STOP"
+"SYS"
+"TERM"
+"THAW"
+"TRAP"
+"TSTP"
+"TSTP"
+"TTIN"
+"TTIN"
+"TTOU"
+"TTOU"
+"UNUSED"
+"URG"
+"USR1"
+"USR2"
+"VTALRM"
+"WAITING"
+"WINCH"
+"XCPU"
+"XFSZ"
+
+# Signal numbers, 0-32
+"0"
+"1"
+"2"
+"3"
+"4"
+"5"
+"6"
+"7"
+"8"
+"9"
+"10"
+"11"
+"12"
+"13"
+"14"
+"15"
+"16"
+"17"
+"18"
+"19"
+"20"
+"21"
+"22"
+"23"
+"24"
+"25"
+"26"
+"27"
+"28"
+"29"
+"30"
+"31"
+"32"
diff --git a/lib/iolog/regress/host_port/host_port_test.c b/lib/iolog/regress/host_port/host_port_test.c
new file mode 100644
index 0000000..9b504e1
--- /dev/null
+++ b/lib/iolog/regress/host_port/host_port_test.c
@@ -0,0 +1,145 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <time.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that iolog_parse_host_port() works as expected.
+ */
+
+struct host_port_test {
+    const char *str;		/* input string */
+    const char *host;		/* parsed host */
+    const char *port;		/* parsed port */
+    bool tls;			/* parsed TLS flag */
+    const char *defport;	/* default port */
+    const char *defport_tls;	/* default port */
+    bool ret;			/* return value */
+};
+
+static struct host_port_test test_data[] = {
+    /* No TLS */
+    { "xerxes", "xerxes", "12345", false, "12345", NULL, true },
+    { "xerxes:12345", "xerxes", "12345", false, "67890", NULL, true },
+    { "127.0.0.1", "127.0.0.1", "12345", false, "12345", NULL, true },
+    { "127.0.0.1:12345", "127.0.0.1", "12345", false, "67890", NULL, true },
+    { "[::1]", "::1", "12345", false, "12345", NULL, true },
+    { "[::1]:12345", "::1", "12345", false, "67890", NULL, true },
+
+    /* With TLS */
+    { "xerxes(tls)", "xerxes", "12345", true, "5678", "12345", true },
+    { "xerxes:12345(tls)", "xerxes", "12345", true, "5678", "67890", true },
+    { "127.0.0.1(tls)", "127.0.0.1", "12345", true, "5678", "12345", true },
+    { "127.0.0.1:12345(tls)", "127.0.0.1", "12345", true, "5678", "67890", true },
+    { "[::1](tls)", "::1", "12345", true, "5678", "12345", true },
+    { "[::1]:12345(tls)", "::1", "12345", true, "5678", "67890", true },
+
+    /* Errors */
+    { "xerxes:", NULL, NULL, false, "12345", NULL, false },	/* missing port */
+    { "127.0.0.1:", NULL, NULL, false, "12345", NULL, false },	/* missing port */
+    { "[::1:12345", NULL, NULL, false, "67890", NULL, false },	/* missing bracket */
+    { "[::1]:", NULL, NULL, false, "12345", NULL, false },	/* missing port */
+    { NULL }
+};
+
+int
+main(int argc, char *argv[])
+{
+    int i, errors = 0, ntests = 0;
+    char *host, *port, *copy = NULL;
+    bool ret, tls;
+
+    initprogname(argc > 0 ? argv[0] : "host_port_test");
+
+    for (i = 0; test_data[i].str != NULL; i++) {
+	host = port = NULL;
+	tls = false;
+	free(copy);
+	if ((copy = strdup(test_data[i].str)) == NULL)
+	    sudo_fatal_nodebug(NULL);
+
+	ntests++;
+	ret = iolog_parse_host_port(copy, &host, &port, &tls,
+	    test_data[i].defport, test_data[i].defport_tls);
+	if (ret != test_data[i].ret) {
+	    sudo_warnx_nodebug("test #%d: %s: returned %s, expected %s",
+		ntests, test_data[i].str, ret ? "true" : "false",
+		test_data[i].ret ? "true" : "false");
+	    errors++;
+	    continue;
+	}
+	if (!ret)
+	    continue;
+
+	if (host == NULL) {
+	    sudo_warnx_nodebug("test #%d: %s: NULL host",
+		ntests, test_data[i].str);
+	    errors++;
+	    continue;
+	}
+	if (strcmp(host, test_data[i].host) != 0) {
+	    sudo_warnx_nodebug("test #%d: %s: bad host, expected %s, got %s",
+		ntests, test_data[i].str, test_data[i].host, host);
+	    errors++;
+	    continue;
+	}
+	if (port == NULL) {
+	    sudo_warnx_nodebug("test #%d: %s: NULL port",
+		ntests, test_data[i].str);
+	    errors++;
+	    continue;
+	}
+	if (strcmp(port, test_data[i].port) != 0) {
+	    sudo_warnx_nodebug("test #%d: %s: bad port, expected %s, got %s",
+		ntests, test_data[i].str, test_data[i].port, port);
+	    errors++;
+	    continue;
+	}
+	if (tls != test_data[i].tls) {
+	    sudo_warnx_nodebug("test #%d: %s: bad tls, expected %s, got %s",
+		ntests, test_data[i].str, test_data[i].tls ? "true" : "false",
+		tls ? "true" : "false");
+	    errors++;
+	    continue;
+	}
+    }
+    free(copy);
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/iolog/regress/iolog_filter/check_iolog_filter.c b/lib/iolog/regress/iolog_filter/check_iolog_filter.c
new file mode 100644
index 0000000..d24f12f
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/check_iolog_filter.c
@@ -0,0 +1,203 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+#include "sudo_iolog.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+int
+main(int argc, char *argv[])
+{
+    int dfd = -1, ttyin_fd = -1, ttyout_fd = -1, ttyin_ok_fd = -1;
+    int ch, i, ntests = 0, errors = 0;
+    void *passprompt_regex = NULL;
+
+    initprogname(argc > 0 ? argv[0] : "check_iolog_filter");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v] iolog_dir ...\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    passprompt_regex = iolog_pwfilt_alloc();
+    if (passprompt_regex == NULL)
+	sudo_fatalx("unable to allocate memory");
+    if (!iolog_pwfilt_add(passprompt_regex, "(?i)password[: ]*"))
+	exit(1);
+
+    for (i = 0; i < argc; i++) {
+	struct iolog_file iolog_timing = { true };
+	struct timing_closure timing;
+	const char *logdir = argv[i];
+	char tbuf[8192], fbuf[8192];
+	ssize_t nread;
+
+	ntests++;
+
+	/* I/O logs consist of multiple files in a directory. */
+	dfd = open(logdir, O_RDONLY);
+	if (dfd == -1) {
+	    sudo_warn("%s", logdir);
+	    errors++;
+	    continue;
+	}
+
+	if (!iolog_open(&iolog_timing, dfd, IOFD_TIMING, "r")) {
+	    sudo_warn("timing");
+	    errors++;
+	    goto next;
+	}
+
+	ttyout_fd = openat(dfd, "ttyout", O_RDONLY, 0644);
+	if (ttyout_fd == -1) {
+	    sudo_warn("ttyout");
+	    errors++;
+	    goto next;
+	}
+
+	ttyin_fd = openat(dfd, "ttyin", O_RDONLY, 0644);
+	if (ttyin_fd == -1) {
+	    sudo_warn("ttyin");
+	    errors++;
+	    goto next;
+	}
+
+	ttyin_ok_fd = openat(dfd, "ttyin.filtered", O_RDONLY, 0644);
+	if (ttyin_ok_fd == -1) {
+	    sudo_warn("ttyin.filtered");
+	    errors++;
+	    goto next;
+	}
+
+	memset(&timing, 0, sizeof(timing));
+	timing.decimal = ".";
+	for (;;) {
+	    char *newbuf = NULL;
+	    const char *name;
+	    int fd;
+
+	    if (iolog_read_timing_record(&iolog_timing, &timing) != 0)
+		break;
+
+	    switch (timing.event) {
+	    case IO_EVENT_TTYOUT:
+		fd = ttyout_fd;
+		name = "ttyout";
+		break;
+	    case IO_EVENT_TTYIN:
+		fd = ttyin_fd;
+		name = "ttyin";
+		break;
+	    default:
+		continue;
+	    }
+
+	    if (timing.u.nbytes > sizeof(tbuf)) {
+		sudo_warn("buffer too small, %zu > %zu", timing.u.nbytes,
+		    sizeof(tbuf));
+		errors++;
+		continue;
+	    }
+
+	    nread = read(fd, tbuf, timing.u.nbytes);
+	    if ((size_t)nread != timing.u.nbytes) {
+		if (nread == -1)
+		    sudo_warn("%s/%s", argv[i], name);
+		else
+		    sudo_warnx("%s/%s: short read", argv[i], name);
+		errors++;
+		continue;
+	    }
+
+	    /* Apply filter. */
+	    if (!iolog_pwfilt_run(passprompt_regex, timing.event, tbuf,
+		    timing.u.nbytes, &newbuf)) {
+		errors++;
+		continue;
+	    }
+
+	    if (timing.event == IO_EVENT_TTYIN) {
+		nread = read(ttyin_ok_fd, fbuf, timing.u.nbytes);
+		if (nread == -1) {
+		    if (nread == -1)
+			sudo_warn("%s/ttyin.filtered", argv[i]);
+		    else
+			sudo_warnx("%s/ttyin.filtered: short read", argv[i]);
+		    errors++;
+		    free(newbuf);
+		    break;
+		}
+		if (memcmp(fbuf, newbuf ? newbuf : tbuf, timing.u.nbytes) != 0) {
+		    sudo_warnx("%s: ttyin mismatch at byte %lld", argv[i],
+			(long long)lseek(fd, 0, SEEK_CUR));
+		    errors++;
+		    free(newbuf);
+		    break;
+		}
+	    }
+
+	    free(newbuf);
+	}
+next:
+	if (ttyin_fd != -1) {
+	    close(ttyin_fd);
+	    ttyin_fd = -1;
+	}
+	if (ttyin_ok_fd != -1) {
+	    close(ttyin_ok_fd);
+	    ttyin_ok_fd = -1;
+	}
+	if (dfd != -1) {
+	    close(dfd);
+	    dfd = -1;
+	}
+	if (iolog_timing.enabled)
+	    iolog_close(&iolog_timing, NULL);
+    }
+    iolog_pwfilt_free(passprompt_regex);
+
+    if (ntests != 0) {
+	printf("iolog_filter: %d test%s run, %d errors, %d%% success rate\n",
+	    ntests, ntests == 1 ? "" : "s", errors,
+	    (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/iolog/regress/iolog_filter/test1/log b/lib/iolog/regress/iolog_filter/test1/log
new file mode 100644
index 0000000..551adfb
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test1/log
@@ -0,0 +1,3 @@
+1645151020:millert:root::/dev/ttypb:24:80
+/home/millert
+/usr/bin/passwd
diff --git a/lib/iolog/regress/iolog_filter/test1/timing b/lib/iolog/regress/iolog_filter/test1/timing
new file mode 100644
index 0000000..3a62388
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test1/timing
@@ -0,0 +1,44 @@
+4 0.087089703 32
+4 0.000503221 13
+3 1.617732029 1
+3 0.671818399 1
+3 0.632182533 1
+3 0.135484597 1
+3 0.120171445 1
+3 0.120200768 1
+3 0.239782513 1
+3 0.064059449 1
+3 0.184048364 1
+3 0.135992479 1
+3 0.167905298 1
+3 0.087948033 1
+3 0.135913060 1
+3 0.136306311 1
+3 0.279830387 1
+3 0.280221744 1
+4 0.000453682 2
+4 0.001188404 20
+3 0.678534827 1
+3 1.912119627 1
+3 0.303804149 1
+3 0.071831900 1
+3 0.248608651 1
+3 0.088758738 1
+3 0.262821628 1
+3 0.111839737 1
+3 0.184326849 1
+3 0.119709565 1
+3 0.184446495 1
+3 0.089439595 1
+3 0.150353799 1
+3 0.152035883 1
+3 0.392237165 1
+3 0.183498720 1
+3 0.136099560 1
+3 0.256165394 1
+4 0.000392254 2
+4 0.000348360 35
+4 0.000330782 13
+3 0.871580665 1
+4 0.000434371 2
+4 0.001150945 23
diff --git a/lib/iolog/regress/iolog_filter/test1/ttyin b/lib/iolog/regress/iolog_filter/test1/ttyin
new file mode 100644
index 0000000..5a2067d
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test1/ttyin
@@ -0,0 +1 @@
+A new password?
A bad password...

\ No newline at end of file
diff --git a/lib/iolog/regress/iolog_filter/test1/ttyin.filtered b/lib/iolog/regress/iolog_filter/test1/ttyin.filtered
new file mode 100644
index 0000000..d4943b3
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test1/ttyin.filtered
@@ -0,0 +1 @@
+***************
*****************
*
\ No newline at end of file
diff --git a/lib/iolog/regress/iolog_filter/test1/ttyout b/lib/iolog/regress/iolog_filter/test1/ttyout
new file mode 100644
index 0000000..bac1f87
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test1/ttyout
@@ -0,0 +1,7 @@
+Changing password for millert.

+New password:

+Retype new password:

+Mismatch; try again, EOF to quit.

+New password:

+

+Password unchanged.

diff --git a/lib/iolog/regress/iolog_filter/test2/log b/lib/iolog/regress/iolog_filter/test2/log
new file mode 100644
index 0000000..8790573
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test2/log
@@ -0,0 +1,3 @@
+1645153850:millert:millert::/dev/ttypb:24:80
+/home/millert
+/usr/bin/su testdude
diff --git a/lib/iolog/regress/iolog_filter/test2/timing b/lib/iolog/regress/iolog_filter/test2/timing
new file mode 100644
index 0000000..7e6b1cc
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test2/timing
@@ -0,0 +1,73 @@
+4 0.077895153 9
+3 9.876530326 1
+3 0.191980568 1
+3 0.168017746 1
+3 0.088081740 1
+3 0.183886638 1
+3 0.071966892 1
+3 0.175772878 1
+3 0.672270691 1
+4 0.000336085 2
+4 0.022264031 8
+3 4.721817713 1
+4 0.001379444 1
+3 0.086406844 1
+4 0.000383615 1
+3 0.055583229 1
+4 0.000353543 1
+3 0.079726966 1
+4 0.000336390 1
+3 0.063626746 1
+4 0.000719018 1
+3 0.135204338 1
+4 0.000342720 1
+3 0.095976209 1
+4 0.000338049 1
+3 0.047259669 1
+4 0.000339501 1
+3 0.399809817 1
+4 0.000345392 1
+3 0.111587761 1
+4 0.000366589 1
+3 0.087582640 1
+4 0.000328160 1
+3 0.480159500 1
+4 0.000370778 3
+3 0.143285883 1
+4 0.000332529 3
+3 0.135841236 1
+4 0.000343729 3
+3 0.223401313 1
+4 0.000329496 1
+3 0.063760060 1
+4 0.000382349 1
+3 0.087442363 1
+4 0.000345787 1
+3 0.095598655 1
+4 0.000343712 1
+3 0.560106197 1
+4 0.000405183 3
+3 0.151363786 1
+4 0.000345085 3
+3 0.167809002 1
+4 0.000326037 3
+3 0.135471962 1
+4 0.000378004 3
+3 0.111681517 1
+4 0.000329093 1
+3 0.127537491 1
+4 0.000355403 1
+3 0.103896235 1
+4 0.000320608 1
+3 0.095563437 1
+4 0.000327463 1
+3 0.087808248 1
+4 0.000321244 1
+3 0.503531970 1
+4 0.000338699 1
+3 1.383887942 1
+4 0.000324499 3
+4 0.000334583 11
+4 0.000324866 8
+3 0.999440679 1
+4 0.000365851 5
diff --git a/lib/iolog/regress/iolog_filter/test2/ttyin b/lib/iolog/regress/iolog_filter/test2/ttyin
new file mode 100644
index 0000000..29482c0
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test2/ttyin
@@ -0,0 +1 @@
+test123
echo hi ereherethere!

\ No newline at end of file
diff --git a/lib/iolog/regress/iolog_filter/test2/ttyin.filtered b/lib/iolog/regress/iolog_filter/test2/ttyin.filtered
new file mode 100644
index 0000000..e3c303d
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test2/ttyin.filtered
@@ -0,0 +1 @@
+*******
echo hi ereherethere!

\ No newline at end of file
diff --git a/lib/iolog/regress/iolog_filter/test2/ttyout b/lib/iolog/regress/iolog_filter/test2/ttyout
new file mode 100644
index 0000000..dbb7124
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test2/ttyout
@@ -0,0 +1,4 @@
+Password:

+xerxes$ echo hi ere   here    there!


+hi there!

+xerxes$ ^D


diff --git a/lib/iolog/regress/iolog_filter/test3/log b/lib/iolog/regress/iolog_filter/test3/log
new file mode 100644
index 0000000..f0500f4
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test3/log
@@ -0,0 +1,3 @@
+1645201461:millert:root::/dev/ttyp0:24:80
+/home/millert
+/usr/bin/ssh -oPubkeyAuthentication=no localhost
diff --git a/lib/iolog/regress/iolog_filter/test3/timing b/lib/iolog/regress/iolog_filter/test3/timing
new file mode 100644
index 0000000..03b67f4
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test3/timing
@@ -0,0 +1,54 @@
+4 0.158768144 1
+4 0.000406264 27
+3 4.390837642 1
+3 0.119705081 1
+3 0.175600726 1
+3 0.064357615 1
+3 0.239945395 1
+3 0.088142451 1
+3 0.143665762 1
+3 0.071941169 1
+3 0.208359675 1
+3 0.145706215 1
+3 0.302231926 1
+3 0.079805215 1
+3 0.112114024 1
+3 0.143802378 1
+3 0.160033289 1
+4 0.000416283 2
+4 0.042939142 40
+4 0.000399448 27
+3 1.084753026 1
+3 0.087720859 1
+3 0.215896027 1
+3 0.167921572 1
+3 0.304253899 1
+3 0.103807201 1
+3 0.191962088 1
+3 0.071989566 1
+3 0.296183440 1
+3 0.162262688 1
+3 0.125661454 1
+3 0.192164590 1
+4 0.000394039 2
+4 0.034617321 40
+4 0.000414822 27
+3 0.796676353 1
+3 0.119589531 1
+3 0.120189440 1
+3 0.080002264 1
+3 0.120104599 1
+3 0.087897523 1
+3 0.088072936 1
+3 0.111980459 1
+3 0.064099904 1
+3 0.440166638 1
+3 0.159957933 1
+3 0.063988834 1
+3 0.247906778 1
+3 0.167767797 1
+3 0.151961605 1
+3 0.176237322 1
+3 0.368288839 1
+4 0.000364019 2
+4 0.034413644 79
diff --git a/lib/iolog/regress/iolog_filter/test3/ttyin b/lib/iolog/regress/iolog_filter/test3/ttyin
new file mode 100644
index 0000000..224e0b4
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test3/ttyin
@@ -0,0 +1 @@
+not a password
nope, sorry
try again please
\ No newline at end of file
diff --git a/lib/iolog/regress/iolog_filter/test3/ttyin.filtered b/lib/iolog/regress/iolog_filter/test3/ttyin.filtered
new file mode 100644
index 0000000..bc6dfb5
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test3/ttyin.filtered
@@ -0,0 +1 @@
+**************
***********
****************
\ No newline at end of file
diff --git a/lib/iolog/regress/iolog_filter/test3/ttyout b/lib/iolog/regress/iolog_filter/test3/ttyout
new file mode 100644
index 0000000..b6befb9
--- /dev/null
+++ b/lib/iolog/regress/iolog_filter/test3/ttyout
@@ -0,0 +1,6 @@
+
root@localhost's password: 

+Permission denied, please try again.


+
root@localhost's password: 

+Permission denied, please try again.


+
root@localhost's password: 

+root@localhost: Permission denied (publickey,password,keyboard-interactive).


diff --git a/lib/iolog/regress/iolog_json/check_iolog_json.c b/lib/iolog/regress/iolog_json/check_iolog_json.c
new file mode 100644
index 0000000..ce8565f
--- /dev/null
+++ b/lib/iolog/regress/iolog_json/check_iolog_json.c
@@ -0,0 +1,265 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+#include "iolog_json.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+static bool
+json_print_object(struct json_container *jsonc, struct json_object *object)
+{
+    struct json_item *item;
+    struct json_value json_value;
+    bool ret = false;
+
+    TAILQ_FOREACH(item, &object->items, entries) {
+	switch (item->type) {
+	case JSON_STRING:
+	    json_value.type = JSON_STRING;
+	    json_value.u.string = item->u.string;
+	    if (!sudo_json_add_value(jsonc, item->name, &json_value))
+		goto oom;
+	    break;
+	case JSON_NUMBER:
+	    json_value.type = JSON_NUMBER;
+	    json_value.u.number = item->u.number;
+	    if (!sudo_json_add_value(jsonc, item->name, &json_value))
+		goto oom;
+	    break;
+	case JSON_OBJECT:
+	    if (!sudo_json_open_object(jsonc, item->name))
+		goto oom;
+	    if (!json_print_object(jsonc, &item->u.child))
+		goto done;
+	    if (!sudo_json_close_object(jsonc))
+		goto oom;
+	    break;
+	case JSON_ARRAY:
+	    if (!sudo_json_open_array(jsonc, item->name))
+		goto oom;
+	    if (!json_print_object(jsonc, &item->u.child))
+		goto done;
+	    if (!sudo_json_close_array(jsonc))
+		goto oom;
+	    break;
+	case JSON_BOOL:
+	    json_value.type = JSON_BOOL;
+	    json_value.u.boolean = item->u.boolean;
+	    if (!sudo_json_add_value(jsonc, item->name, &json_value))
+		goto oom;
+	    break;
+	case JSON_NULL:
+	    json_value.type = JSON_NULL;
+	    if (!sudo_json_add_value(jsonc, item->name, &json_value))
+		goto oom;
+	    break;
+	default:
+	    sudo_warnx("unsupported JSON type %d", item->type);
+	    goto done;
+	}
+    }
+
+    ret = true;
+    goto done;
+
+oom:
+    sudo_warnx("%s: %s", __func__, "unable to allocate memory");
+done:
+    return ret;
+}
+
+static bool
+json_format(struct json_container *jsonc, struct json_object *object)
+{
+    struct json_item *item;
+    bool ret = false;
+
+    /* First object holds all the actual data. */
+    item = TAILQ_FIRST(&object->items);
+    if (item->type != JSON_OBJECT) {
+	sudo_warnx("expected JSON_OBJECT, got %d", item->type);
+	goto done;
+    }
+    object = &item->u.child;
+
+    if (!json_print_object(jsonc, object))
+	goto done;
+
+    ret = true;
+
+done:
+    return ret;
+}
+
+static void
+usage(void)
+{
+    fprintf(stderr, "usage: %s [-c] input_file ...\n",
+	getprogname());
+    exit(EXIT_FAILURE);
+}
+
+static bool
+compare(FILE *fp, const char *infile, struct json_container *jsonc)
+{
+    const char *cp;
+    unsigned int lineno = 0;
+    size_t linesize = 0;
+    char *line = NULL;
+    ssize_t len;
+
+    cp = sudo_json_get_buf(jsonc);
+
+    while ((len = getdelim(&line, &linesize, '\n', fp)) != -1) {
+	lineno++;
+
+	/* skip open/close brace, not present in formatted output */
+	if (lineno == 1 && strcmp(line, "{\n") == 0)
+	    continue;
+	if (*cp == '\0' && strcmp(line, "}\n") == 0)
+	    continue;
+
+	/* Ignore newlines in output to make comparison easier. */
+	if (*cp == '\n')
+	    cp++;
+	if (line[len - 1] == '\n')
+	    len--;
+
+	if (strncmp(line, cp, len) != 0) {
+	    fprintf(stderr, "%s: mismatch on line %u\n", infile, lineno);
+	    fprintf(stderr, "expected: %s", line);
+	    fprintf(stderr, "got     : %.*s\n", (int)len, cp);
+	    return false;
+	}
+	cp += len;
+    }
+    free(line);
+
+    return true;
+}
+
+int
+main(int argc, char *argv[])
+{
+    struct json_object root;
+    int ch, i, ntests = 0, errors = 0;
+    bool cat = false;
+
+    initprogname(argc > 0 ? argv[0] : "check_iolog_json");
+
+    while ((ch = getopt(argc, argv, "c")) != -1) {
+	switch (ch) {
+	    case 'c':
+		cat = true;
+		break;
+	    default:
+		usage();
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (argc < 1)
+	usage();
+
+    for (i = 0; i < argc; i++) {
+	struct json_container jsonc;
+	const char *infile = argv[i];
+	const char *outfile = argv[i];
+	const char *cp;
+	char pathbuf[PATH_MAX];
+	FILE *infp = NULL;
+	FILE *outfp = NULL;
+
+	ntests++;
+
+	if (!sudo_json_init(&jsonc, 4, false, true, true)) {
+	    errors++;
+	    continue;
+	}
+
+	/* Parse input file. */
+	if ((infp = fopen(infile, "r")) == NULL) {
+	    sudo_warn("%s", argv[i]);
+	    errors++;
+	    continue;
+	}
+	if (!iolog_parse_json(infp, infile, &root)) {
+	    errors++;
+	    goto next;
+	}
+
+	/* Format as pretty-printed JSON */
+	if (!json_format(&jsonc, &root)) {
+	    errors++;
+	    goto next;
+	}
+
+	/* Check for a .out.ok file in the same location as the .in file. */
+	cp = strrchr(infile, '.');
+	if (cp != NULL && strcmp(cp, ".in") == 0) {
+	    snprintf(pathbuf, sizeof(pathbuf), "%.*s.out.ok",
+		(int)(cp - infile), infile);
+	    if ((outfp = fopen(pathbuf, "r")) != NULL)
+		outfile = pathbuf;
+	}
+	if (outfp == NULL)
+	    outfp = infp;
+
+	/* Compare output to expected output. */
+	rewind(outfp);
+	if (!compare(outfp, outfile, &jsonc))
+	    errors++;
+
+	/* Write the formatted output to stdout for -c (cat) */
+	if (cat) {
+	    fprintf(stdout, "{%s\n}\n", sudo_json_get_buf(&jsonc));
+	    fflush(stdout);
+	}
+
+next:
+	free_json_items(&root.items);
+	sudo_json_free(&jsonc);
+	if (infp != NULL)
+	    fclose(infp);
+	if (outfp != NULL && outfp != infp)
+	    fclose(outfp);
+    }
+
+    if (ntests != 0) {
+	printf("iolog_json: %d test%s run, %d errors, %d%% success rate\n",
+	    ntests, ntests == 1 ? "" : "s", errors,
+	    (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/iolog/regress/iolog_json/test1.in b/lib/iolog/regress/iolog_json/test1.in
new file mode 100644
index 0000000..8ad3689
--- /dev/null
+++ b/lib/iolog/regress/iolog_json/test1.in
@@ -0,0 +1,34 @@
+{
+    "timestamp": {
+        "seconds": 1584993067,
+        "nanoseconds": 880288287
+    },
+    "columns": 80,
+    "command": "/usr/bin/make",
+    "lines": 24,
+    "runargv": [
+        "make",
+        "test"
+    ],
+    "runenv": [
+        "LANG=en_US.UTF-8",
+        "PATH=/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin",
+        "TERM=vt100",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/make test",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "A__z=\"*SHLVL"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/home/test",
+    "submithost": "sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/console"
+}
diff --git a/lib/iolog/regress/iolog_json/test2.in b/lib/iolog/regress/iolog_json/test2.in
new file mode 100644
index 0000000..df7170f
--- /dev/null
+++ b/lib/iolog/regress/iolog_json/test2.in
@@ -0,0 +1,28 @@
+{
+    "timestamp": { "seconds": 1584993067, "nanoseconds": 880288287 },
+    "columns": 80,
+    "command": "/usr/bin/make",
+    "lines": 24,
+    "runargv": [ "make", "test" ],
+    "runenv": [
+        "LANG=en_US.UTF-8",
+        "PATH=/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin",
+        "TERM=vt100",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/make test",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "A__z=\"*SHLVL"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/home/test",
+    "submithost": "sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/console"
+}
diff --git a/lib/iolog/regress/iolog_json/test2.out.ok b/lib/iolog/regress/iolog_json/test2.out.ok
new file mode 100644
index 0000000..8ad3689
--- /dev/null
+++ b/lib/iolog/regress/iolog_json/test2.out.ok
@@ -0,0 +1,34 @@
+{
+    "timestamp": {
+        "seconds": 1584993067,
+        "nanoseconds": 880288287
+    },
+    "columns": 80,
+    "command": "/usr/bin/make",
+    "lines": 24,
+    "runargv": [
+        "make",
+        "test"
+    ],
+    "runenv": [
+        "LANG=en_US.UTF-8",
+        "PATH=/bin:/sbin:/usr/games:/usr/bin:/usr/sbin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin",
+        "TERM=vt100",
+        "MAIL=/var/mail/root",
+        "LOGNAME=root",
+        "USER=root",
+        "HOME=/root",
+        "SHELL=/bin/ksh",
+        "SUDO_COMMAND=/usr/bin/make test",
+        "SUDO_USER=millert",
+        "SUDO_UID=8036",
+        "SUDO_GID=20",
+        "A__z=\"*SHLVL"
+    ],
+    "runuid": 0,
+    "runuser": "root",
+    "submitcwd": "/home/test",
+    "submithost": "sudo.ws",
+    "submituser": "millert",
+    "ttyname": "/dev/console"
+}
diff --git a/lib/iolog/regress/iolog_json/test3.in b/lib/iolog/regress/iolog_json/test3.in
new file mode 100644
index 0000000..6f243e3
--- /dev/null
+++ b/lib/iolog/regress/iolog_json/test3.in
@@ -0,0 +1,22 @@
+{
+    "true": false,
+    "false": true,
+    "number": 1234567890,
+    "null": null,
+    "string": "non\u0073ense",
+    "scope": {
+        "a": "b",
+        "bah": null
+    },
+    "array1": [
+        "foo",
+        "bar",
+        [
+            123,
+            null,
+            false,
+            "fizz",
+            "buzz"
+        ]
+    ]
+}
diff --git a/lib/iolog/regress/iolog_json/test3.out.ok b/lib/iolog/regress/iolog_json/test3.out.ok
new file mode 100644
index 0000000..ea2df89
--- /dev/null
+++ b/lib/iolog/regress/iolog_json/test3.out.ok
@@ -0,0 +1,22 @@
+{
+    "true": false,
+    "false": true,
+    "number": 1234567890,
+    "null": null,
+    "string": "nonsense",
+    "scope": {
+        "a": "b",
+        "bah": null
+    },
+    "array1": [
+        "foo",
+        "bar",
+        [
+            123,
+            null,
+            false,
+            "fizz",
+            "buzz"
+        ]
+    ]
+}
diff --git a/lib/iolog/regress/iolog_mkpath/check_iolog_mkpath.c b/lib/iolog/regress/iolog_mkpath/check_iolog_mkpath.c
new file mode 100644
index 0000000..36935ee
--- /dev/null
+++ b/lib/iolog/regress/iolog_mkpath/check_iolog_mkpath.c
@@ -0,0 +1,115 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+static const char *test_paths[] = {
+    "testdir/a/b/c/user",		/* create new */
+    "testdir/a/b/c/user",		/* open existing */
+    "testdir/a/b/c/user.XXXXXX",	/* mkdtemp new */
+    NULL
+};
+
+static void
+test_iolog_mkpath(const char *testdir, int *ntests, int *nerrors)
+{
+    const char **tp;
+    char *path;
+
+    iolog_set_owner(geteuid(), getegid());
+
+    for (tp = test_paths; *tp != NULL; tp++) {
+	if (asprintf(&path, "%s/%s", testdir, *tp) == -1)
+	    sudo_fatalx("unable to allocate memory");
+
+	(*ntests)++;
+	if (!iolog_mkpath(path)) {
+	    sudo_warnx("unable to mkpath %s", path);
+	    (*nerrors)++;
+	}
+	free(path);
+    }
+}
+
+int
+main(int argc, char *argv[])
+{
+    char testdir[] = "mkpath.XXXXXX";
+    const char *rmargs[] = { "rm", "-rf", NULL, NULL };
+    int ch, status, ntests = 0, errors = 0;
+
+    initprogname(argc > 0 ? argv[0] : "check_iolog_mkpath");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (mkdtemp(testdir) == NULL)
+	sudo_fatal("unable to create test dir");
+    rmargs[2] = testdir;
+
+    test_iolog_mkpath(testdir, &ntests, &errors);
+
+    if (ntests != 0) {
+	printf("iolog_mkpath: %d test%s run, %d errors, %d%% success rate\n",
+	    ntests, ntests == 1 ? "" : "s", errors,
+	    (ntests - errors) * 100 / ntests);
+    }
+
+    /* Clean up (avoid running via shell) */
+    switch (fork()) {
+    case -1:
+	sudo_warn("fork");
+	_exit(1);
+    case 0:
+	execvp("rm", (char **)rmargs);
+	_exit(1);
+    default:
+	wait(&status);
+	if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
+	    errors++;
+	break;
+    }
+
+    return errors;
+}
diff --git a/lib/iolog/regress/iolog_path/check_iolog_path.c b/lib/iolog/regress/iolog_path/check_iolog_path.c
new file mode 100644
index 0000000..7a46735
--- /dev/null
+++ b/lib/iolog/regress/iolog_path/check_iolog_path.c
@@ -0,0 +1,296 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2013 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <time.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+
+static struct iolog_escape_data {
+    char sessid[7];
+    char *user;
+    char *group;
+    char *runas_user;
+    char *runas_group;
+    char *host;
+    char *command;
+} escape_data;
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+static void
+usage(void)
+{
+    fprintf(stderr, "usage: %s datafile\n", getprogname());
+    exit(EXIT_FAILURE);
+}
+
+static void
+reset_escape_data(struct iolog_escape_data *data)
+{
+    free(data->user);
+    free(data->group);
+    free(data->runas_user);
+    free(data->runas_group);
+    free(data->host);
+    free(data->command);
+    memset(data, 0, sizeof(*data));
+}
+
+static size_t
+fill_seq(char *str, size_t strsize, void *unused)
+{
+    int len;
+
+    /* Path is of the form /var/log/sudo-io/00/00/01. */
+    len = snprintf(str, strsize, "%c%c/%c%c/%c%c", escape_data.sessid[0],
+	escape_data.sessid[1], escape_data.sessid[2], escape_data.sessid[3],
+	escape_data.sessid[4], escape_data.sessid[5]);
+    if (len < 0)
+	return strsize; /* handle non-standard snprintf() */
+    return len;
+}
+
+static size_t
+fill_user(char *str, size_t strsize, void *unused)
+{
+    return strlcpy(str, escape_data.user, strsize);
+}
+
+static size_t
+fill_group(char *str, size_t strsize, void *unused)
+{
+    return strlcpy(str, escape_data.group, strsize);
+}
+
+static size_t
+fill_runas_user(char *str, size_t strsize, void *unused)
+{
+    return strlcpy(str, escape_data.runas_user, strsize);
+}
+
+static size_t
+fill_runas_group(char *str, size_t strsize, void *unused)
+{
+    return strlcpy(str, escape_data.runas_group, strsize);
+}
+
+static size_t
+fill_hostname(char *str, size_t strsize, void *unused)
+{
+    return strlcpy(str, escape_data.host, strsize);
+}
+
+static size_t
+fill_command(char *str, size_t strsize, void *unused)
+{
+    return strlcpy(str, escape_data.command, strsize);
+}
+
+/* Note: "seq" must be first in the list. */
+static struct iolog_path_escape path_escapes[] = {
+    { "seq", fill_seq },
+    { "user", fill_user },
+    { "group", fill_group },
+    { "runas_user", fill_runas_user },
+    { "runas_group", fill_runas_group },
+    { "hostname", fill_hostname },
+    { "command", fill_command },
+    { NULL, NULL }
+};
+
+static int
+do_check(char *dir_in, char *file_in, char *tdir_out, char *tfile_out)
+{
+    char dir[PATH_MAX], dir_out[PATH_MAX] = "";
+    char file[PATH_MAX], file_out[PATH_MAX] = "";
+    int error = 0;
+    struct tm tm;
+    time_t now;
+    int len;
+
+    /*
+     * Expand any strftime(3) escapes
+     * XXX - want to pass tm to expand_iolog_path
+     */
+    time(&now);
+    if (localtime_r(&now, &tm) == NULL)
+	sudo_fatal("localtime_r");
+    if (tdir_out[0] != '\0') {
+	len = strftime(dir_out, sizeof(dir_out), tdir_out, &tm);
+	if (len == 0 || dir_out[sizeof(dir_out) - 1] != '\0')
+	    sudo_fatalx("dir_out: strftime overflow");
+    }
+    if (tfile_out[0] != '\0') {
+	len = strftime(file_out, sizeof(file_out), tfile_out, &tm);
+	if (len == 0 || file_out[sizeof(file_out) - 1] != '\0')
+	    sudo_fatalx("file_out: strftime overflow");
+    }
+
+    if (!expand_iolog_path(dir_in, dir, sizeof(dir), &path_escapes[1], NULL))
+	sudo_fatalx("unable to expand I/O log dir");
+    if (!expand_iolog_path(file_in, file, sizeof(file), &path_escapes[0], dir))
+	sudo_fatalx("unable to expand I/O log file");
+
+    if (strcmp(dir, dir_out) != 0) {
+	sudo_warnx("%s: expected %s, got %s", dir_in, dir_out, dir);
+	error = 1;
+    }
+    if (strcmp(file, file_out) != 0) {
+	sudo_warnx("%s: expected %s, got %s", file_in, file_out, file);
+	error = 1;
+    }
+
+    return error;
+}
+
+#define MAX_STATE	12
+
+int
+main(int argc, char *argv[])
+{
+    size_t len;
+    FILE *fp;
+    char line[2048];
+    char *file_in = NULL, *file_out = NULL;
+    char *dir_in = NULL, *dir_out = NULL;
+    int ch, state = 0, errors = 0, ntests = 0;
+
+    initprogname(argc > 0 ? argv[0] : "check_iolog_path");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v] data\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (argc != 1)
+	usage();
+
+    fp = fopen(argv[0], "r");
+    if (fp == NULL)
+	sudo_fatalx("unable to open %s", argv[0]);
+
+    /*
+     * Input consists of 12 lines:
+     * sequence number
+     * user name
+     * user gid
+     * runas user name
+     * runas gid
+     * hostname [short form]
+     * command
+     * dir [with escapes]
+     * file [with escapes]
+     * expanded dir
+     * expanded file
+     * empty line
+     */
+    while (fgets(line, sizeof(line), fp) != NULL) {
+	len = strcspn(line, "\n");
+	line[len] = '\0';
+
+	switch (state) {
+	case 0:
+	    strlcpy(escape_data.sessid, line, sizeof(escape_data.sessid));
+	    break;
+	case 1:
+	    if ((escape_data.user = strdup(line)) == NULL)
+		sudo_fatal(NULL);
+	    break;
+	case 2:
+	    if ((escape_data.group = strdup(line)) == NULL)
+		sudo_fatal(NULL);
+	    break;
+	case 3:
+	    if ((escape_data.runas_user = strdup(line)) == NULL)
+		sudo_fatal(NULL);
+	    break;
+	case 4:
+	    if ((escape_data.runas_group = strdup(line)) == NULL)
+		sudo_fatal(NULL);
+	    break;
+	case 5:
+	    if ((escape_data.host = strdup(line)) == NULL)
+		sudo_fatal(NULL);
+	    break;
+	case 6:
+	    if ((escape_data.command = strdup(line)) == NULL)
+		sudo_fatal(NULL);
+	    break;
+	case 7:
+	    if (dir_in != NULL)
+		free(dir_in);
+	    dir_in = strdup(line);
+	    break;
+	case 8:
+	    if (file_in != NULL)
+		free(file_in);
+	    file_in = strdup(line);
+	    break;
+	case 9:
+	    if (dir_out != NULL)
+		free(dir_out);
+	    dir_out = strdup(line);
+	    break;
+	case 10:
+	    if (file_out != NULL)
+		free(file_out);
+	    file_out = strdup(line);
+	    break;
+	case 11:
+	    errors += do_check(dir_in, file_in, dir_out, file_out);
+	    ntests++;
+	    reset_escape_data(&escape_data);
+	    break;
+	default:
+	    sudo_fatalx("internal error, invalid state %d", state);
+	}
+	state = (state + 1) % MAX_STATE;
+    }
+    free(dir_in);
+    free(dir_out);
+    free(file_in);
+    free(file_out);
+
+    if (ntests != 0) {
+	printf("iolog_path: %d test%s run, %d errors, %d%% success rate\n",
+	    ntests, ntests == 1 ? "" : "s", errors,
+	    (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/iolog/regress/iolog_path/data b/lib/iolog/regress/iolog_path/data
new file mode 100644
index 0000000..48dc87e
--- /dev/null
+++ b/lib/iolog/regress/iolog_path/data
@@ -0,0 +1,96 @@
+000001
+nobody
+nogroup
+root
+root
+somehost
+id
+/var/log/sudo-io
+%%{bogus}
+/var/log/sudo-io
+%%{bogus}
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+id
+/var/log/sudo-io
+%%{seq}
+/var/log/sudo-io
+%%{seq}
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+id
+/var/log/sudo-io
+%{seq}
+/var/log/sudo-io
+00/00/01
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+id
+/var/log/sudo-io/%{user}
+%{seq}
+/var/log/sudo-io/nobody
+00/00/01
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+su
+/var/log/sudo-io/%{user}/%{runas_user}
+%{command}_%Y%m%s_%H%M
+/var/log/sudo-io/nobody/root
+su_%Y%m%s_%H%M
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+su
+/var/log/sudo-io/
+//%{user}/%{runas_user}/%{command}_%Y%m%s_%H%M
+/var/log/sudo-io
+/nobody/root/su_%Y%m%s_%H%M
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+su
+/var/log/sudo-io/%d%m%Y
+%{user}/%{runas_user}/%{command}
+/var/log/sudo-io/%d%m%Y
+nobody/root/su
+
+000001
+nobody
+nogroup
+root
+wheel
+somehost
+su
+////////
+%{user}/%{runas_user}/%{command}
+
+nobody/root/su
+
diff --git a/lib/iolog/regress/iolog_timing/check_iolog_timing.c b/lib/iolog/regress/iolog_timing/check_iolog_timing.c
new file mode 100644
index 0000000..915b604
--- /dev/null
+++ b/lib/iolog/regress/iolog_timing/check_iolog_timing.c
@@ -0,0 +1,161 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+#include "sudo_iolog.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+static struct parse_delay_test {
+    const char *input;
+    const char *next_field;
+    struct timespec expected_delay;
+} parse_delay_tests[] = {
+    { "10.99999999999 X", "X", { 10, 999999999 } },	/* clamp to nsec */
+    { "10.999999999 X",   "X", { 10, 999999999 } },	/* nsec */
+    { "10.999999 X",      "X", { 10, 999999000 } },	/* usec -> nsec */
+    { "10.000999999 X",   "X", { 10, 999999 } },
+    { "10.9 X",           "X", { 10, 900000000 } },
+    { "10.0 X",           "X", { 10, 0 } }
+};
+
+/*
+ * Test iolog_parse_delay()
+ */
+static void
+test_parse_delay(int *ntests, int *nerrors)
+{
+    unsigned int i;
+
+    for (i = 0; i < nitems(parse_delay_tests); i++) {
+	struct timespec delay;
+	struct parse_delay_test *test = &parse_delay_tests[i];
+	char *cp = iolog_parse_delay(test->input, &delay, ".");
+	if (cp == NULL) {
+	    sudo_warnx("%s:%u failed to parse delay: %s", __func__,
+		i, test->input);
+	    (*nerrors)++;
+	    continue;
+	}
+	if (strcmp(cp, test->next_field) != 0) {
+	    sudo_warnx("%s:%u next field (want \"%s\", got \"%s\"", __func__,
+		i, test->next_field, cp);
+	    (*nerrors)++;
+	    continue;
+	}
+	if (delay.tv_sec != test->expected_delay.tv_sec) {
+	    sudo_warnx("%s:%u wrong seconds (want %lld, got %lld)", __func__,
+		i, (long long)test->expected_delay.tv_sec,
+		(long long)delay.tv_sec);
+	    (*nerrors)++;
+	    continue;
+	}
+	if (delay.tv_nsec != test->expected_delay.tv_nsec) {
+	    sudo_warnx("%s:%u wrong nanoseconds (want %ld, got %ld)", __func__,
+		i, test->expected_delay.tv_nsec, delay.tv_nsec);
+	    (*nerrors)++;
+	    continue;
+	}
+    }
+    (*ntests) += i;
+}
+
+static struct adjust_delay_test {
+    struct timespec in_delay;
+    struct timespec out_delay;
+    struct timespec max_delay;
+    double scale_factor;
+} adjust_delay_tests[] = {
+    { { 10,       300 }, { 10,       300 }, { 0, 0 }, 1.0 },
+    { { 10,       300 }, {  5,       150 }, { 0, 0 }, 2.0 },
+    { {  5,       300 }, {  2, 500000150 }, { 0, 0 }, 2.0 },
+    { {  0,   1000000 }, {  0,    333333 }, { 0, 0 },   3 },
+    { { 10,   1000000 }, {  3, 333666666 }, { 0, 0 },   3 },
+    { {  5,       150 }, { 10,       300 }, { 0, 0 }, 0.5 },
+    { {  5, 500000000 }, { 11,         0 }, { 0, 0 }, 0.5 },
+    { {  5,       150 }, {  5,         0 }, { 5, 0 }, 0.5 }
+};
+
+/*
+ * Test iolog_adjust_delay()
+ */
+static void
+test_adjust_delay(int *ntests, int *nerrors)
+{
+    unsigned int i;
+
+    for (i = 0; i < nitems(adjust_delay_tests); i++) {
+	struct adjust_delay_test *test = &adjust_delay_tests[i];
+
+	iolog_adjust_delay(&test->in_delay,
+	    sudo_timespecisset(&test->max_delay) ? &test->max_delay : NULL,
+	    test->scale_factor);
+	if (!sudo_timespeccmp(&test->in_delay, &test->out_delay, ==)) {
+	    sudo_warnx("%s:%u want {%lld, %ld}, got {%lld, %ld}", __func__, i,
+		(long long)test->out_delay.tv_sec, test->out_delay.tv_nsec,
+		(long long)test->in_delay.tv_sec, test->in_delay.tv_nsec);
+	    (*nerrors)++;
+	}
+    }
+    (*ntests) += i;
+}
+
+int
+main(int argc, char *argv[])
+{
+    int ch, ntests = 0, errors = 0;
+
+    initprogname(argc > 0 ? argv[0] : "check_iolog_timing");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    test_parse_delay(&ntests, &errors);
+
+    test_adjust_delay(&ntests, &errors);
+
+    if (ntests != 0) {
+	printf("iolog_timing: %d test%s run, %d errors, %d%% success rate\n",
+	    ntests, ntests == 1 ? "" : "s", errors,
+	    (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/logsrv/Makefile.in b/lib/logsrv/Makefile.in
new file mode 100644
index 0000000..f81698f
--- /dev/null
+++ b/lib/logsrv/Makefile.in
@@ -0,0 +1,186 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+devdir = @devdir@
+scriptdir = $(top_srcdir)/scripts
+incdir = $(top_srcdir)/include
+
+# Compiler & tools to use
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+
+# Libraries
+LT_LIBS =
+
+# C preprocessor flags
+CPPFLAGS = -I$(incdir) -I$(top_builddir) -I$(srcdir) -I$(top_srcdir) @CPPFLAGS@
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+
+# Flags to pass to libtool
+LTFLAGS = @LT_STATIC@
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# cppcheck options, usually set in the top-level Makefile
+CPPCHECK_OPTS = -q --enable=warning,performance,portability --suppress=constStatement --suppress=compareBoolExpressionWithInt --error-exitcode=1 --inline-suppr -Dva_copy=va_copy -U__cplusplus -UQUAD_MAX -UQUAD_MIN -UUQUAD_MAX -U_POSIX_HOST_NAME_MAX -U_POSIX_PATH_MAX -U__NBBY -DNSIG=64
+
+# splint options, usually set in the top-level Makefile
+SPLINT_OPTS = -D__restrict= -checks
+
+# PVS-studio options
+PVS_CFG = $(top_srcdir)/PVS-Studio.cfg
+PVS_IGNORE = 'V707,V011,V002,V536'
+PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
+
+# Set to non-empty for development mode
+DEVEL = @DEVEL@
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+LIBLOGSRV_OBJS = log_server.pb-c.lo
+
+IOBJS = $(LIBLOGSRV_OBJS:.lo=.i)
+
+POBJS = $(IOBJS:.i=.plog)
+
+GENERATED = log_server.pb-c.h log_server.pb-c.c
+
+all: liblogsrv.la
+
+depend:
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/logsrv/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/logsrv/Makefile
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/logsrv/Makefile
+
+.SUFFIXES: .c .h .i .lo .plog
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+.c.i:
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+
+.i.plog:
+	ifile=$<; rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $${ifile%i}c --i-file $< --output-file $@
+
+$(devdir)/log_server.pb-c.c: $(srcdir)/log_server.proto
+	@if [ -n "$(DEVEL)" ]; then \
+	    cmd='protoc-c --c_out=$(devdir) --proto_path=$(srcdir) $(srcdir)/log_server.proto'; \
+	    echo "$$cmd"; eval $$cmd; \
+	    cmd='$(scriptdir)/unanon $(devdir)/log_server.pb-c.h $(devdir)/log_server.pb-c.c'; \
+	    echo "$$cmd"; eval $$cmd; \
+	    if [ "$(devdir)" == "$(srcdir)" ]; then \
+		cmd='mv -f $(devdir)/log_server.pb-c.h $(incdir)/log_server.pb-c.h'; \
+	    else \
+		cmd='mv -f $(devdir)/log_server.pb-c.h $(top_builddir)/log_server.pb-c.h'; \
+	    fi; \
+	    echo "$$cmd"; eval $$cmd; \
+	fi
+
+liblogsrv.la: $(LIBLOGSRV_OBJS) $(LT_LIBS)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LIBLOGSRV_OBJS) $(LT_LIBS)
+
+pre-install:
+
+install:
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer:
+
+uninstall:
+
+splint:
+	splint $(SPLINT_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+cppcheck:
+	cppcheck $(CPPCHECK_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+pvs-log-files:
+
+pvs-studio:
+
+fuzz:
+
+check-fuzzer:
+
+check: check-fuzzer
+
+check-verbose: check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f *.lo *.o *.la
+	-rm -f *.i *.plog stamp-* core *.core core.*
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile .libs
+	@if [ -n "$(DEVEL)" -a "$(devdir)" != "$(srcdir)" ]; then \
+	    cmd='rm -rf $(GENERATED)'; \
+	    echo "$$cmd"; eval $$cmd; \
+	fi
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean
+
+# Autogenerated dependencies, do not modify
+log_server.pb-c.lo: $(srcdir)/log_server.pb-c.c $(incdir)/log_server.pb-c.h \
+                    $(incdir)/protobuf-c/protobuf-c.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/log_server.pb-c.c
+log_server.pb-c.plog: $(srcdir)/log_server.pb-c.c
+	touch $@
diff --git a/lib/logsrv/log_server.pb-c.c b/lib/logsrv/log_server.pb-c.c
new file mode 100644
index 0000000..e46bc10
--- /dev/null
+++ b/lib/logsrv/log_server.pb-c.c
@@ -0,0 +1,1766 @@
+/* Generated by the protocol buffer compiler.  DO NOT EDIT! */
+/* Generated from: log_server.proto */
+
+/* Do not generate deprecated warnings for self */
+#ifndef PROTOBUF_C__NO_DEPRECATED
+#define PROTOBUF_C__NO_DEPRECATED
+#endif
+
+#include "log_server.pb-c.h"
+void   client_message__init
+                     (ClientMessage         *message)
+{
+  static const ClientMessage init_value = CLIENT_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t client_message__get_packed_size
+                     (const ClientMessage *message)
+{
+  assert(message->base.descriptor == &client_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t client_message__pack
+                     (const ClientMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &client_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t client_message__pack_to_buffer
+                     (const ClientMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &client_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+ClientMessage *
+       client_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (ClientMessage *)
+     protobuf_c_message_unpack (&client_message__descriptor,
+                                allocator, len, data);
+}
+void   client_message__free_unpacked
+                     (ClientMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &client_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   time_spec__init
+                     (TimeSpec         *message)
+{
+  static const TimeSpec init_value = TIME_SPEC__INIT;
+  *message = init_value;
+}
+size_t time_spec__get_packed_size
+                     (const TimeSpec *message)
+{
+  assert(message->base.descriptor == &time_spec__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t time_spec__pack
+                     (const TimeSpec *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &time_spec__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t time_spec__pack_to_buffer
+                     (const TimeSpec *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &time_spec__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+TimeSpec *
+       time_spec__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (TimeSpec *)
+     protobuf_c_message_unpack (&time_spec__descriptor,
+                                allocator, len, data);
+}
+void   time_spec__free_unpacked
+                     (TimeSpec *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &time_spec__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   io_buffer__init
+                     (IoBuffer         *message)
+{
+  static const IoBuffer init_value = IO_BUFFER__INIT;
+  *message = init_value;
+}
+size_t io_buffer__get_packed_size
+                     (const IoBuffer *message)
+{
+  assert(message->base.descriptor == &io_buffer__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t io_buffer__pack
+                     (const IoBuffer *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &io_buffer__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t io_buffer__pack_to_buffer
+                     (const IoBuffer *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &io_buffer__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+IoBuffer *
+       io_buffer__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (IoBuffer *)
+     protobuf_c_message_unpack (&io_buffer__descriptor,
+                                allocator, len, data);
+}
+void   io_buffer__free_unpacked
+                     (IoBuffer *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &io_buffer__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   info_message__string_list__init
+                     (InfoMessage__StringList         *message)
+{
+  static const InfoMessage__StringList init_value = INFO_MESSAGE__STRING_LIST__INIT;
+  *message = init_value;
+}
+void   info_message__number_list__init
+                     (InfoMessage__NumberList         *message)
+{
+  static const InfoMessage__NumberList init_value = INFO_MESSAGE__NUMBER_LIST__INIT;
+  *message = init_value;
+}
+void   info_message__init
+                     (InfoMessage         *message)
+{
+  static const InfoMessage init_value = INFO_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t info_message__get_packed_size
+                     (const InfoMessage *message)
+{
+  assert(message->base.descriptor == &info_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t info_message__pack
+                     (const InfoMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &info_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t info_message__pack_to_buffer
+                     (const InfoMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &info_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+InfoMessage *
+       info_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (InfoMessage *)
+     protobuf_c_message_unpack (&info_message__descriptor,
+                                allocator, len, data);
+}
+void   info_message__free_unpacked
+                     (InfoMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &info_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   accept_message__init
+                     (AcceptMessage         *message)
+{
+  static const AcceptMessage init_value = ACCEPT_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t accept_message__get_packed_size
+                     (const AcceptMessage *message)
+{
+  assert(message->base.descriptor == &accept_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t accept_message__pack
+                     (const AcceptMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &accept_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t accept_message__pack_to_buffer
+                     (const AcceptMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &accept_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+AcceptMessage *
+       accept_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (AcceptMessage *)
+     protobuf_c_message_unpack (&accept_message__descriptor,
+                                allocator, len, data);
+}
+void   accept_message__free_unpacked
+                     (AcceptMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &accept_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   reject_message__init
+                     (RejectMessage         *message)
+{
+  static const RejectMessage init_value = REJECT_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t reject_message__get_packed_size
+                     (const RejectMessage *message)
+{
+  assert(message->base.descriptor == &reject_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t reject_message__pack
+                     (const RejectMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &reject_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t reject_message__pack_to_buffer
+                     (const RejectMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &reject_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+RejectMessage *
+       reject_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (RejectMessage *)
+     protobuf_c_message_unpack (&reject_message__descriptor,
+                                allocator, len, data);
+}
+void   reject_message__free_unpacked
+                     (RejectMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &reject_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   exit_message__init
+                     (ExitMessage         *message)
+{
+  static const ExitMessage init_value = EXIT_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t exit_message__get_packed_size
+                     (const ExitMessage *message)
+{
+  assert(message->base.descriptor == &exit_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t exit_message__pack
+                     (const ExitMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &exit_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t exit_message__pack_to_buffer
+                     (const ExitMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &exit_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+ExitMessage *
+       exit_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (ExitMessage *)
+     protobuf_c_message_unpack (&exit_message__descriptor,
+                                allocator, len, data);
+}
+void   exit_message__free_unpacked
+                     (ExitMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &exit_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   alert_message__init
+                     (AlertMessage         *message)
+{
+  static const AlertMessage init_value = ALERT_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t alert_message__get_packed_size
+                     (const AlertMessage *message)
+{
+  assert(message->base.descriptor == &alert_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t alert_message__pack
+                     (const AlertMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &alert_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t alert_message__pack_to_buffer
+                     (const AlertMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &alert_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+AlertMessage *
+       alert_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (AlertMessage *)
+     protobuf_c_message_unpack (&alert_message__descriptor,
+                                allocator, len, data);
+}
+void   alert_message__free_unpacked
+                     (AlertMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &alert_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   restart_message__init
+                     (RestartMessage         *message)
+{
+  static const RestartMessage init_value = RESTART_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t restart_message__get_packed_size
+                     (const RestartMessage *message)
+{
+  assert(message->base.descriptor == &restart_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t restart_message__pack
+                     (const RestartMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &restart_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t restart_message__pack_to_buffer
+                     (const RestartMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &restart_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+RestartMessage *
+       restart_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (RestartMessage *)
+     protobuf_c_message_unpack (&restart_message__descriptor,
+                                allocator, len, data);
+}
+void   restart_message__free_unpacked
+                     (RestartMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &restart_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   change_window_size__init
+                     (ChangeWindowSize         *message)
+{
+  static const ChangeWindowSize init_value = CHANGE_WINDOW_SIZE__INIT;
+  *message = init_value;
+}
+size_t change_window_size__get_packed_size
+                     (const ChangeWindowSize *message)
+{
+  assert(message->base.descriptor == &change_window_size__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t change_window_size__pack
+                     (const ChangeWindowSize *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &change_window_size__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t change_window_size__pack_to_buffer
+                     (const ChangeWindowSize *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &change_window_size__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+ChangeWindowSize *
+       change_window_size__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (ChangeWindowSize *)
+     protobuf_c_message_unpack (&change_window_size__descriptor,
+                                allocator, len, data);
+}
+void   change_window_size__free_unpacked
+                     (ChangeWindowSize *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &change_window_size__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   command_suspend__init
+                     (CommandSuspend         *message)
+{
+  static const CommandSuspend init_value = COMMAND_SUSPEND__INIT;
+  *message = init_value;
+}
+size_t command_suspend__get_packed_size
+                     (const CommandSuspend *message)
+{
+  assert(message->base.descriptor == &command_suspend__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t command_suspend__pack
+                     (const CommandSuspend *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &command_suspend__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t command_suspend__pack_to_buffer
+                     (const CommandSuspend *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &command_suspend__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+CommandSuspend *
+       command_suspend__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (CommandSuspend *)
+     protobuf_c_message_unpack (&command_suspend__descriptor,
+                                allocator, len, data);
+}
+void   command_suspend__free_unpacked
+                     (CommandSuspend *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &command_suspend__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   client_hello__init
+                     (ClientHello         *message)
+{
+  static const ClientHello init_value = CLIENT_HELLO__INIT;
+  *message = init_value;
+}
+size_t client_hello__get_packed_size
+                     (const ClientHello *message)
+{
+  assert(message->base.descriptor == &client_hello__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t client_hello__pack
+                     (const ClientHello *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &client_hello__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t client_hello__pack_to_buffer
+                     (const ClientHello *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &client_hello__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+ClientHello *
+       client_hello__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (ClientHello *)
+     protobuf_c_message_unpack (&client_hello__descriptor,
+                                allocator, len, data);
+}
+void   client_hello__free_unpacked
+                     (ClientHello *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &client_hello__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   server_message__init
+                     (ServerMessage         *message)
+{
+  static const ServerMessage init_value = SERVER_MESSAGE__INIT;
+  *message = init_value;
+}
+size_t server_message__get_packed_size
+                     (const ServerMessage *message)
+{
+  assert(message->base.descriptor == &server_message__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t server_message__pack
+                     (const ServerMessage *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &server_message__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t server_message__pack_to_buffer
+                     (const ServerMessage *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &server_message__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+ServerMessage *
+       server_message__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (ServerMessage *)
+     protobuf_c_message_unpack (&server_message__descriptor,
+                                allocator, len, data);
+}
+void   server_message__free_unpacked
+                     (ServerMessage *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &server_message__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+void   server_hello__init
+                     (ServerHello         *message)
+{
+  static const ServerHello init_value = SERVER_HELLO__INIT;
+  *message = init_value;
+}
+size_t server_hello__get_packed_size
+                     (const ServerHello *message)
+{
+  assert(message->base.descriptor == &server_hello__descriptor);
+  return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message));
+}
+size_t server_hello__pack
+                     (const ServerHello *message,
+                      uint8_t       *out)
+{
+  assert(message->base.descriptor == &server_hello__descriptor);
+  return protobuf_c_message_pack ((const ProtobufCMessage*)message, out);
+}
+size_t server_hello__pack_to_buffer
+                     (const ServerHello *message,
+                      ProtobufCBuffer *buffer)
+{
+  assert(message->base.descriptor == &server_hello__descriptor);
+  return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer);
+}
+ServerHello *
+       server_hello__unpack
+                     (ProtobufCAllocator  *allocator,
+                      size_t               len,
+                      const uint8_t       *data)
+{
+  return (ServerHello *)
+     protobuf_c_message_unpack (&server_hello__descriptor,
+                                allocator, len, data);
+}
+void   server_hello__free_unpacked
+                     (ServerHello *message,
+                      ProtobufCAllocator *allocator)
+{
+  if(!message)
+    return;
+  assert(message->base.descriptor == &server_hello__descriptor);
+  protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator);
+}
+static const ProtobufCFieldDescriptor client_message__field_descriptors[13] =
+{
+  {
+    "accept_msg",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.accept_msg),
+    &accept_message__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "reject_msg",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.reject_msg),
+    &reject_message__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "exit_msg",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.exit_msg),
+    &exit_message__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "restart_msg",
+    4,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.restart_msg),
+    &restart_message__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "alert_msg",
+    5,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.alert_msg),
+    &alert_message__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "ttyin_buf",
+    6,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.ttyin_buf),
+    &io_buffer__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "ttyout_buf",
+    7,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.ttyout_buf),
+    &io_buffer__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "stdin_buf",
+    8,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.stdin_buf),
+    &io_buffer__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "stdout_buf",
+    9,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.stdout_buf),
+    &io_buffer__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "stderr_buf",
+    10,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.stderr_buf),
+    &io_buffer__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "winsize_event",
+    11,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.winsize_event),
+    &change_window_size__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "suspend_event",
+    12,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.suspend_event),
+    &command_suspend__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "hello_msg",
+    13,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ClientMessage, type_case),
+    offsetof(ClientMessage, u.hello_msg),
+    &client_hello__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned client_message__field_indices_by_name[] = {
+  0,   /* field[0] = accept_msg */
+  4,   /* field[4] = alert_msg */
+  2,   /* field[2] = exit_msg */
+  12,   /* field[12] = hello_msg */
+  1,   /* field[1] = reject_msg */
+  3,   /* field[3] = restart_msg */
+  9,   /* field[9] = stderr_buf */
+  7,   /* field[7] = stdin_buf */
+  8,   /* field[8] = stdout_buf */
+  11,   /* field[11] = suspend_event */
+  5,   /* field[5] = ttyin_buf */
+  6,   /* field[6] = ttyout_buf */
+  10,   /* field[10] = winsize_event */
+};
+static const ProtobufCIntRange client_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 13 }
+};
+const ProtobufCMessageDescriptor client_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "ClientMessage",
+  "ClientMessage",
+  "ClientMessage",
+  "",
+  sizeof(ClientMessage),
+  13,
+  client_message__field_descriptors,
+  client_message__field_indices_by_name,
+  1,  client_message__number_ranges,
+  (ProtobufCMessageInit) client_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor time_spec__field_descriptors[2] =
+{
+  {
+    "tv_sec",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT64,
+    0,   /* quantifier_offset */
+    offsetof(TimeSpec, tv_sec),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "tv_nsec",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT32,
+    0,   /* quantifier_offset */
+    offsetof(TimeSpec, tv_nsec),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned time_spec__field_indices_by_name[] = {
+  1,   /* field[1] = tv_nsec */
+  0,   /* field[0] = tv_sec */
+};
+static const ProtobufCIntRange time_spec__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 2 }
+};
+const ProtobufCMessageDescriptor time_spec__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "TimeSpec",
+  "TimeSpec",
+  "TimeSpec",
+  "",
+  sizeof(TimeSpec),
+  2,
+  time_spec__field_descriptors,
+  time_spec__field_indices_by_name,
+  1,  time_spec__number_ranges,
+  (ProtobufCMessageInit) time_spec__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor io_buffer__field_descriptors[2] =
+{
+  {
+    "delay",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(IoBuffer, delay),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "data",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_BYTES,
+    0,   /* quantifier_offset */
+    offsetof(IoBuffer, data),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned io_buffer__field_indices_by_name[] = {
+  1,   /* field[1] = data */
+  0,   /* field[0] = delay */
+};
+static const ProtobufCIntRange io_buffer__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 2 }
+};
+const ProtobufCMessageDescriptor io_buffer__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "IoBuffer",
+  "IoBuffer",
+  "IoBuffer",
+  "",
+  sizeof(IoBuffer),
+  2,
+  io_buffer__field_descriptors,
+  io_buffer__field_indices_by_name,
+  1,  io_buffer__number_ranges,
+  (ProtobufCMessageInit) io_buffer__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor info_message__string_list__field_descriptors[1] =
+{
+  {
+    "strings",
+    1,
+    PROTOBUF_C_LABEL_REPEATED,
+    PROTOBUF_C_TYPE_STRING,
+    offsetof(InfoMessage__StringList, n_strings),
+    offsetof(InfoMessage__StringList, strings),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned info_message__string_list__field_indices_by_name[] = {
+  0,   /* field[0] = strings */
+};
+static const ProtobufCIntRange info_message__string_list__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 1 }
+};
+const ProtobufCMessageDescriptor info_message__string_list__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "InfoMessage.StringList",
+  "StringList",
+  "InfoMessage__StringList",
+  "",
+  sizeof(InfoMessage__StringList),
+  1,
+  info_message__string_list__field_descriptors,
+  info_message__string_list__field_indices_by_name,
+  1,  info_message__string_list__number_ranges,
+  (ProtobufCMessageInit) info_message__string_list__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor info_message__number_list__field_descriptors[1] =
+{
+  {
+    "numbers",
+    1,
+    PROTOBUF_C_LABEL_REPEATED,
+    PROTOBUF_C_TYPE_INT64,
+    offsetof(InfoMessage__NumberList, n_numbers),
+    offsetof(InfoMessage__NumberList, numbers),
+    NULL,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_PACKED,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned info_message__number_list__field_indices_by_name[] = {
+  0,   /* field[0] = numbers */
+};
+static const ProtobufCIntRange info_message__number_list__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 1 }
+};
+const ProtobufCMessageDescriptor info_message__number_list__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "InfoMessage.NumberList",
+  "NumberList",
+  "InfoMessage__NumberList",
+  "",
+  sizeof(InfoMessage__NumberList),
+  1,
+  info_message__number_list__field_descriptors,
+  info_message__number_list__field_indices_by_name,
+  1,  info_message__number_list__number_ranges,
+  (ProtobufCMessageInit) info_message__number_list__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor info_message__field_descriptors[5] =
+{
+  {
+    "key",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(InfoMessage, key),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "numval",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT64,
+    offsetof(InfoMessage, value_case),
+    offsetof(InfoMessage, u.numval),
+    NULL,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "strval",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    offsetof(InfoMessage, value_case),
+    offsetof(InfoMessage, u.strval),
+    NULL,
+    &protobuf_c_empty_string,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "strlistval",
+    4,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(InfoMessage, value_case),
+    offsetof(InfoMessage, u.strlistval),
+    &info_message__string_list__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "numlistval",
+    5,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(InfoMessage, value_case),
+    offsetof(InfoMessage, u.numlistval),
+    &info_message__number_list__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned info_message__field_indices_by_name[] = {
+  0,   /* field[0] = key */
+  4,   /* field[4] = numlistval */
+  1,   /* field[1] = numval */
+  3,   /* field[3] = strlistval */
+  2,   /* field[2] = strval */
+};
+static const ProtobufCIntRange info_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 5 }
+};
+const ProtobufCMessageDescriptor info_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "InfoMessage",
+  "InfoMessage",
+  "InfoMessage",
+  "",
+  sizeof(InfoMessage),
+  5,
+  info_message__field_descriptors,
+  info_message__field_indices_by_name,
+  1,  info_message__number_ranges,
+  (ProtobufCMessageInit) info_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor accept_message__field_descriptors[3] =
+{
+  {
+    "submit_time",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(AcceptMessage, submit_time),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "info_msgs",
+    2,
+    PROTOBUF_C_LABEL_REPEATED,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(AcceptMessage, n_info_msgs),
+    offsetof(AcceptMessage, info_msgs),
+    &info_message__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "expect_iobufs",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_BOOL,
+    0,   /* quantifier_offset */
+    offsetof(AcceptMessage, expect_iobufs),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned accept_message__field_indices_by_name[] = {
+  2,   /* field[2] = expect_iobufs */
+  1,   /* field[1] = info_msgs */
+  0,   /* field[0] = submit_time */
+};
+static const ProtobufCIntRange accept_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 3 }
+};
+const ProtobufCMessageDescriptor accept_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "AcceptMessage",
+  "AcceptMessage",
+  "AcceptMessage",
+  "",
+  sizeof(AcceptMessage),
+  3,
+  accept_message__field_descriptors,
+  accept_message__field_indices_by_name,
+  1,  accept_message__number_ranges,
+  (ProtobufCMessageInit) accept_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor reject_message__field_descriptors[3] =
+{
+  {
+    "submit_time",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(RejectMessage, submit_time),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "reason",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(RejectMessage, reason),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "info_msgs",
+    3,
+    PROTOBUF_C_LABEL_REPEATED,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(RejectMessage, n_info_msgs),
+    offsetof(RejectMessage, info_msgs),
+    &info_message__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned reject_message__field_indices_by_name[] = {
+  2,   /* field[2] = info_msgs */
+  1,   /* field[1] = reason */
+  0,   /* field[0] = submit_time */
+};
+static const ProtobufCIntRange reject_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 3 }
+};
+const ProtobufCMessageDescriptor reject_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "RejectMessage",
+  "RejectMessage",
+  "RejectMessage",
+  "",
+  sizeof(RejectMessage),
+  3,
+  reject_message__field_descriptors,
+  reject_message__field_indices_by_name,
+  1,  reject_message__number_ranges,
+  (ProtobufCMessageInit) reject_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor exit_message__field_descriptors[5] =
+{
+  {
+    "run_time",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(ExitMessage, run_time),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "exit_value",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT32,
+    0,   /* quantifier_offset */
+    offsetof(ExitMessage, exit_value),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "dumped_core",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_BOOL,
+    0,   /* quantifier_offset */
+    offsetof(ExitMessage, dumped_core),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "signal",
+    4,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(ExitMessage, signal),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "error",
+    5,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(ExitMessage, error),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned exit_message__field_indices_by_name[] = {
+  2,   /* field[2] = dumped_core */
+  4,   /* field[4] = error */
+  1,   /* field[1] = exit_value */
+  0,   /* field[0] = run_time */
+  3,   /* field[3] = signal */
+};
+static const ProtobufCIntRange exit_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 5 }
+};
+const ProtobufCMessageDescriptor exit_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "ExitMessage",
+  "ExitMessage",
+  "ExitMessage",
+  "",
+  sizeof(ExitMessage),
+  5,
+  exit_message__field_descriptors,
+  exit_message__field_indices_by_name,
+  1,  exit_message__number_ranges,
+  (ProtobufCMessageInit) exit_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor alert_message__field_descriptors[3] =
+{
+  {
+    "alert_time",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(AlertMessage, alert_time),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "reason",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(AlertMessage, reason),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "info_msgs",
+    3,
+    PROTOBUF_C_LABEL_REPEATED,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(AlertMessage, n_info_msgs),
+    offsetof(AlertMessage, info_msgs),
+    &info_message__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned alert_message__field_indices_by_name[] = {
+  0,   /* field[0] = alert_time */
+  2,   /* field[2] = info_msgs */
+  1,   /* field[1] = reason */
+};
+static const ProtobufCIntRange alert_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 3 }
+};
+const ProtobufCMessageDescriptor alert_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "AlertMessage",
+  "AlertMessage",
+  "AlertMessage",
+  "",
+  sizeof(AlertMessage),
+  3,
+  alert_message__field_descriptors,
+  alert_message__field_indices_by_name,
+  1,  alert_message__number_ranges,
+  (ProtobufCMessageInit) alert_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor restart_message__field_descriptors[2] =
+{
+  {
+    "log_id",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(RestartMessage, log_id),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "resume_point",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(RestartMessage, resume_point),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned restart_message__field_indices_by_name[] = {
+  0,   /* field[0] = log_id */
+  1,   /* field[1] = resume_point */
+};
+static const ProtobufCIntRange restart_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 2 }
+};
+const ProtobufCMessageDescriptor restart_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "RestartMessage",
+  "RestartMessage",
+  "RestartMessage",
+  "",
+  sizeof(RestartMessage),
+  2,
+  restart_message__field_descriptors,
+  restart_message__field_indices_by_name,
+  1,  restart_message__number_ranges,
+  (ProtobufCMessageInit) restart_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor change_window_size__field_descriptors[3] =
+{
+  {
+    "delay",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(ChangeWindowSize, delay),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "rows",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT32,
+    0,   /* quantifier_offset */
+    offsetof(ChangeWindowSize, rows),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "cols",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_INT32,
+    0,   /* quantifier_offset */
+    offsetof(ChangeWindowSize, cols),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned change_window_size__field_indices_by_name[] = {
+  2,   /* field[2] = cols */
+  0,   /* field[0] = delay */
+  1,   /* field[1] = rows */
+};
+static const ProtobufCIntRange change_window_size__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 3 }
+};
+const ProtobufCMessageDescriptor change_window_size__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "ChangeWindowSize",
+  "ChangeWindowSize",
+  "ChangeWindowSize",
+  "",
+  sizeof(ChangeWindowSize),
+  3,
+  change_window_size__field_descriptors,
+  change_window_size__field_indices_by_name,
+  1,  change_window_size__number_ranges,
+  (ProtobufCMessageInit) change_window_size__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor command_suspend__field_descriptors[2] =
+{
+  {
+    "delay",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    0,   /* quantifier_offset */
+    offsetof(CommandSuspend, delay),
+    &time_spec__descriptor,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "signal",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(CommandSuspend, signal),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned command_suspend__field_indices_by_name[] = {
+  0,   /* field[0] = delay */
+  1,   /* field[1] = signal */
+};
+static const ProtobufCIntRange command_suspend__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 2 }
+};
+const ProtobufCMessageDescriptor command_suspend__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "CommandSuspend",
+  "CommandSuspend",
+  "CommandSuspend",
+  "",
+  sizeof(CommandSuspend),
+  2,
+  command_suspend__field_descriptors,
+  command_suspend__field_indices_by_name,
+  1,  command_suspend__number_ranges,
+  (ProtobufCMessageInit) command_suspend__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor client_hello__field_descriptors[1] =
+{
+  {
+    "client_id",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(ClientHello, client_id),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned client_hello__field_indices_by_name[] = {
+  0,   /* field[0] = client_id */
+};
+static const ProtobufCIntRange client_hello__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 1 }
+};
+const ProtobufCMessageDescriptor client_hello__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "ClientHello",
+  "ClientHello",
+  "ClientHello",
+  "",
+  sizeof(ClientHello),
+  1,
+  client_hello__field_descriptors,
+  client_hello__field_indices_by_name,
+  1,  client_hello__number_ranges,
+  (ProtobufCMessageInit) client_hello__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor server_message__field_descriptors[5] =
+{
+  {
+    "hello",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ServerMessage, type_case),
+    offsetof(ServerMessage, u.hello),
+    &server_hello__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "commit_point",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_MESSAGE,
+    offsetof(ServerMessage, type_case),
+    offsetof(ServerMessage, u.commit_point),
+    &time_spec__descriptor,
+    NULL,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "log_id",
+    3,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    offsetof(ServerMessage, type_case),
+    offsetof(ServerMessage, u.log_id),
+    NULL,
+    &protobuf_c_empty_string,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "error",
+    4,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    offsetof(ServerMessage, type_case),
+    offsetof(ServerMessage, u.error),
+    NULL,
+    &protobuf_c_empty_string,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "abort",
+    5,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    offsetof(ServerMessage, type_case),
+    offsetof(ServerMessage, u.abort),
+    NULL,
+    &protobuf_c_empty_string,
+    0 | PROTOBUF_C_FIELD_FLAG_ONEOF,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned server_message__field_indices_by_name[] = {
+  4,   /* field[4] = abort */
+  1,   /* field[1] = commit_point */
+  3,   /* field[3] = error */
+  0,   /* field[0] = hello */
+  2,   /* field[2] = log_id */
+};
+static const ProtobufCIntRange server_message__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 5 }
+};
+const ProtobufCMessageDescriptor server_message__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "ServerMessage",
+  "ServerMessage",
+  "ServerMessage",
+  "",
+  sizeof(ServerMessage),
+  5,
+  server_message__field_descriptors,
+  server_message__field_indices_by_name,
+  1,  server_message__number_ranges,
+  (ProtobufCMessageInit) server_message__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
+static const ProtobufCFieldDescriptor server_hello__field_descriptors[4] =
+{
+  {
+    "server_id",
+    1,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(ServerHello, server_id),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "redirect",
+    2,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_STRING,
+    0,   /* quantifier_offset */
+    offsetof(ServerHello, redirect),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "servers",
+    3,
+    PROTOBUF_C_LABEL_REPEATED,
+    PROTOBUF_C_TYPE_STRING,
+    offsetof(ServerHello, n_servers),
+    offsetof(ServerHello, servers),
+    NULL,
+    &protobuf_c_empty_string,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+  {
+    "subcommands",
+    4,
+    PROTOBUF_C_LABEL_NONE,
+    PROTOBUF_C_TYPE_BOOL,
+    0,   /* quantifier_offset */
+    offsetof(ServerHello, subcommands),
+    NULL,
+    NULL,
+    0,             /* flags */
+    0,NULL,NULL    /* reserved1,reserved2, etc */
+  },
+};
+static const unsigned server_hello__field_indices_by_name[] = {
+  1,   /* field[1] = redirect */
+  0,   /* field[0] = server_id */
+  2,   /* field[2] = servers */
+  3,   /* field[3] = subcommands */
+};
+static const ProtobufCIntRange server_hello__number_ranges[1 + 1] =
+{
+  { 1, 0 },
+  { 0, 4 }
+};
+const ProtobufCMessageDescriptor server_hello__descriptor =
+{
+  PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC,
+  "ServerHello",
+  "ServerHello",
+  "ServerHello",
+  "",
+  sizeof(ServerHello),
+  4,
+  server_hello__field_descriptors,
+  server_hello__field_indices_by_name,
+  1,  server_hello__number_ranges,
+  (ProtobufCMessageInit) server_hello__init,
+  NULL,NULL,NULL    /* reserved[123] */
+};
diff --git a/lib/logsrv/log_server.proto b/lib/logsrv/log_server.proto
new file mode 100644
index 0000000..23b716e
--- /dev/null
+++ b/lib/logsrv/log_server.proto
@@ -0,0 +1,136 @@
+syntax = "proto3";
+
+/*
+ * Client message to the server.  Messages on the wire are
+ * prefixed with a 32-bit size in network byte order.
+ */
+message ClientMessage {
+  oneof type {
+    AcceptMessage accept_msg = 1;
+    RejectMessage reject_msg = 2;
+    ExitMessage exit_msg = 3;
+    RestartMessage restart_msg = 4;
+    AlertMessage alert_msg = 5;
+    IoBuffer ttyin_buf = 6;
+    IoBuffer ttyout_buf = 7;
+    IoBuffer stdin_buf = 8;
+    IoBuffer stdout_buf = 9;
+    IoBuffer stderr_buf = 10;
+    ChangeWindowSize winsize_event = 11;
+    CommandSuspend suspend_event = 12;
+    ClientHello hello_msg = 13;
+  }
+}
+
+/* Equivalent of POSIX struct timespec */
+message TimeSpec {
+    int64 tv_sec = 1;		/* seconds */
+    int32 tv_nsec = 2;		/* nanoseconds */
+}
+
+/* I/O buffer with keystroke data */
+message IoBuffer {
+  TimeSpec delay = 1;		/* elapsed time since last record */
+  bytes data = 2;		/* keystroke data */
+}
+
+/*
+ * Key/value pairs, like Privilege Manager struct info.
+ * The value may be a number, a string, or a list of strings.
+ */
+message InfoMessage {
+  message StringList {
+    repeated string strings = 1;
+  }
+  message NumberList {
+    repeated int64 numbers = 1;
+  }
+  string key = 1;
+  oneof value {
+    int64 numval = 2;
+    string strval = 3;
+    StringList strlistval = 4;
+    NumberList numlistval = 5;
+  }
+}
+
+/*
+ * Event log data for command accepted by the policy.
+ */
+message AcceptMessage {
+  TimeSpec submit_time = 1;		/* when command was submitted */
+  repeated InfoMessage info_msgs = 2;	/* key,value event log data */
+  bool expect_iobufs = 3;		/* true if I/O logging enabled */
+}
+
+/*
+ * Event log data for command rejected by the policy.
+ */
+message RejectMessage {
+  TimeSpec submit_time = 1;		/* when command was submitted */
+  string reason = 2;			/* reason command was rejected */
+  repeated InfoMessage info_msgs = 3;	/* key,value event log data */
+}
+
+/* Message sent by client when command exits. */
+/* Might revisit runtime and use end_time instead */
+message ExitMessage {
+  TimeSpec run_time = 1;	/* total elapsed run time */
+  int32 exit_value = 2;		/* 0-255 */
+  bool dumped_core = 3;		/* true if command dumped core */
+  string signal = 4;		/* signal name if killed by signal */
+  string error = 5;		/* if killed due to other error */
+}
+
+/* Alert message, policy module-specific. */
+message AlertMessage {
+  TimeSpec alert_time = 1;		/* time alert message occurred */
+  string reason = 2;			/* policy alert error string */
+  repeated InfoMessage info_msgs = 3;	/* optional key,value event log data */
+}
+
+/* Used to restart an existing I/O log on the server. */
+message RestartMessage {
+  string log_id = 1;		/* ID of log being restarted */
+  TimeSpec resume_point = 2;	/* resume point (elapsed time) */
+}
+
+/* Window size change event. */
+message ChangeWindowSize {
+  TimeSpec delay = 1;		/* elapsed time since last record */
+  int32 rows = 2;		/* new number of rows */
+  int32 cols = 3;		/* new number of columns */
+}
+
+/* Command suspend/resume event. */
+message CommandSuspend {
+  TimeSpec delay = 1;		/* elapsed time since last record */
+  string signal = 2;		/* signal that caused suspend/resume */
+}
+
+/* Hello message from client when connecting to server. */
+message ClientHello {
+  string client_id = 1;		/* free-form client description */
+}
+
+/*
+ * Server messages to the client.  Messages on the wire are
+ * prefixed with a 32-bit size in network byte order.
+ */
+message ServerMessage {
+  oneof type {
+    ServerHello hello = 1;	/* server hello message */
+    TimeSpec commit_point = 2;	/* cumulative time of records stored */
+    string log_id = 3;		/* ID of server-side I/O log */
+    string error = 4;		/* error message from server */
+    string abort = 5;		/* abort message, kill command */
+  }
+}
+
+/* Hello message from server when client connects. */
+message ServerHello {
+  string server_id = 1;		/* free-form server description */
+  string redirect = 2;		/* optional redirect if busy */
+  repeated string servers = 3;	/* optional list of known servers */
+  bool subcommands = 4;		/* flag: server supports sub-commands */
+}
diff --git a/lib/protobuf-c/Makefile.in b/lib/protobuf-c/Makefile.in
new file mode 100644
index 0000000..49b1e9d
--- /dev/null
+++ b/lib/protobuf-c/Makefile.in
@@ -0,0 +1,180 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+devdir = @devdir@
+scriptdir = $(top_srcdir)/scripts
+incdir = $(top_srcdir)/include
+
+# Compiler & tools to use
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+
+# C preprocessor flags
+CPPFLAGS = -I$(incdir) -I$(top_builddir) -I$(srcdir) -I$(top_srcdir) @CPPFLAGS@
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+
+# Flags to pass to libtool
+LTFLAGS = @LT_STATIC@
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# cppcheck options, usually set in the top-level Makefile
+CPPCHECK_OPTS = -q --enable=warning,performance,portability --suppress=constStatement --suppress=compareBoolExpressionWithInt --error-exitcode=1 --inline-suppr -Dva_copy=va_copy -U__cplusplus -UQUAD_MAX -UQUAD_MIN -UUQUAD_MAX -U_POSIX_HOST_NAME_MAX -U_POSIX_PATH_MAX -U__NBBY -DNSIG=64
+
+# splint options, usually set in the top-level Makefile
+SPLINT_OPTS = -D__restrict= -checks
+
+# PVS-studio options
+PVS_CFG = $(top_srcdir)/PVS-Studio.cfg
+PVS_IGNORE = 'V707,V011,V002,V536'
+PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
+
+# Set to non-empty for development mode
+DEVEL = @DEVEL@
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+LIBPROTOBUF_C_OBJS = protobuf-c.lo
+
+IOBJS = $(LIBPROTOBUF_C_OBJS:.lo=.i)
+
+POBJS = $(IOBJS:.i=.plog)
+
+all: libprotobuf-c.la
+
+depend:
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/protobuf-c/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/protobuf-c/Makefile
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/protobuf-c/Makefile
+
+.SUFFIXES: .c .h .i .lo .plog
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+.c.i:
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+
+.i.plog:
+	ifile=$<; rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $${ifile%i}c --i-file $< --output-file $@
+
+$(devdir)/log_server.pb-c.c: $(srcdir)/log_server.proto
+	@if [ -n "$(DEVEL)" ]; then \
+	    cmd='protoc-c --c_out=$(devdir) --proto_path=$(srcdir) $(srcdir)/log_server.proto'; \
+	    echo "$$cmd"; eval $$cmd; \
+	    cmd='$(scriptdir)/unanon $(devdir)/log_server.pb-c.h $(devdir)/log_server.pb-c.c'; \
+	    echo "$$cmd"; eval $$cmd; \
+	    if [ "$(devdir)" == "$(srcdir)" ]; then \
+		cmd='mv -f $(devdir)/log_server.pb-c.h $(incdir)/log_server.pb-c.h'; \
+	    else \
+		cmd='mv -f $(devdir)/log_server.pb-c.h $(top_builddir)/log_server.pb-c.h'; \
+	    fi; \
+	    echo "$$cmd"; eval $$cmd; \
+	fi
+
+libprotobuf-c.la: $(LIBPROTOBUF_C_OBJS)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LIBPROTOBUF_C_OBJS)
+
+pre-install:
+
+install:
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer:
+
+uninstall:
+
+splint:
+	splint $(SPLINT_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+cppcheck:
+	cppcheck $(CPPCHECK_OPTS) -I$(incdir) -I$(top_builddir) -I$(top_srcdir) $(srcdir)/*.c
+
+pvs-log-files:
+
+pvs-studio:
+
+fuzz:
+
+check-fuzzer:
+
+check: check-fuzzer
+
+check-verbose: check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f *.lo *.o *.la
+	-rm -f *.i *.plog stamp-* core *.core core.*
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile .libs
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean
+
+# Autogenerated dependencies, do not modify
+protobuf-c.lo: $(srcdir)/protobuf-c.c $(incdir)/compat/endian.h \
+               $(incdir)/protobuf-c/protobuf-c.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/protobuf-c.c
+protobuf-c.i: $(srcdir)/protobuf-c.c $(incdir)/compat/endian.h \
+               $(incdir)/protobuf-c/protobuf-c.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+protobuf-c.plog: protobuf-c.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/protobuf-c.c --i-file $< --output-file $@
diff --git a/lib/protobuf-c/protobuf-c.c b/lib/protobuf-c/protobuf-c.c
new file mode 100644
index 0000000..56f8dc8
--- /dev/null
+++ b/lib/protobuf-c/protobuf-c.c
@@ -0,0 +1,3687 @@
+/*
+ * Copyright (c) 2008-2022, Dave Benson and the protobuf-c authors.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*! \file
+ * Support library for `protoc-c` generated code.
+ *
+ * This file implements the public API used by the code generated
+ * by `protoc-c`.
+ *
+ * \authors Dave Benson and the protobuf-c authors
+ *
+ * \copyright 2008-2014. Licensed under the terms of the [BSD-2-Clause] license.
+ */
+
+/**
+ * \todo 64-BIT OPTIMIZATION: certain implementations use 32-bit math
+ * even on 64-bit platforms (uint64_size, uint64_pack, parse_uint64).
+ *
+ * \todo Use size_t consistently.
+ */
+
+#include <config.h>
+
+#include <stdlib.h>	/* for malloc, free */
+#include <string.h>	/* for strcmp, strlen, memcpy, memmove, memset */
+#if defined(HAVE_ENDIAN_H)
+# include <endian.h>
+#elif defined(HAVE_SYS_ENDIAN_H)
+# include <sys/endian.h>
+#elif defined(HAVE_MACHINE_ENDIAN_H)
+# include <machine/endian.h>
+#else
+# include "compat/endian.h"
+#endif
+
+#include "protobuf-c/protobuf-c.h"
+
+#if BYTE_ORDER == BIG_ENDIAN
+# define WORDS_BIGENDIAN
+#endif
+
+#define TRUE				1
+#define FALSE				0
+
+#define PROTOBUF_C__ASSERT_NOT_REACHED() assert(0)
+
+/* Workaround for Microsoft compilers. */
+#ifdef _MSC_VER
+# define inline __inline
+#endif
+
+/**
+ * \defgroup internal Internal functions and macros
+ *
+ * These are not exported by the library but are useful to developers working
+ * on `libprotobuf-c` itself.
+ */
+
+/**
+ * \defgroup macros Utility macros for manipulating structures
+ *
+ * Macros and constants used to manipulate the base "classes" generated by
+ * `protobuf-c`. They also define limits and check correctness.
+ *
+ * \ingroup internal
+ * @{
+ */
+
+/** The maximum length of a 64-bit integer in varint encoding. */
+#define MAX_UINT64_ENCODED_SIZE		10
+
+#ifndef PROTOBUF_C_UNPACK_ERROR
+# define PROTOBUF_C_UNPACK_ERROR(...)
+#endif
+
+#if !defined(_WIN32) || !defined(PROTOBUF_C_USE_SHARED_LIB)
+const char protobuf_c_empty_string[] = "";
+#endif
+
+/**
+ * Internal `ProtobufCMessage` manipulation macro.
+ *
+ * Base macro for manipulating a `ProtobufCMessage`. Used by STRUCT_MEMBER() and
+ * STRUCT_MEMBER_PTR().
+ */
+#define STRUCT_MEMBER_P(struct_p, struct_offset) \
+    ((void *) ((uint8_t *) (struct_p) + (struct_offset)))
+
+/**
+ * Return field in a `ProtobufCMessage` based on offset.
+ *
+ * Take a pointer to a `ProtobufCMessage` and find the field at the offset.
+ * Cast it to the passed type.
+ */
+#define STRUCT_MEMBER(member_type, struct_p, struct_offset) \
+    (*(member_type *) STRUCT_MEMBER_P((struct_p), (struct_offset)))
+
+/**
+ * Return field in a `ProtobufCMessage` based on offset.
+ *
+ * Take a pointer to a `ProtobufCMessage` and find the field at the offset. Cast
+ * it to a pointer to the passed type.
+ */
+#define STRUCT_MEMBER_PTR(member_type, struct_p, struct_offset) \
+    ((member_type *) STRUCT_MEMBER_P((struct_p), (struct_offset)))
+
+/* Assertions for magic numbers. */
+
+#define ASSERT_IS_ENUM_DESCRIPTOR(desc) \
+	assert((desc)->magic == PROTOBUF_C__ENUM_DESCRIPTOR_MAGIC)
+
+#define ASSERT_IS_MESSAGE_DESCRIPTOR(desc) \
+	assert((desc)->magic == PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC)
+
+#define ASSERT_IS_MESSAGE(message) \
+	ASSERT_IS_MESSAGE_DESCRIPTOR((message)->descriptor)
+
+#define ASSERT_IS_SERVICE_DESCRIPTOR(desc) \
+	assert((desc)->magic == PROTOBUF_C__SERVICE_DESCRIPTOR_MAGIC)
+
+/**@}*/
+
+/* --- version --- */
+
+const char *
+protobuf_c_version(void)
+{
+	return PROTOBUF_C_VERSION;
+}
+
+uint32_t
+protobuf_c_version_number(void)
+{
+	return PROTOBUF_C_VERSION_NUMBER;
+}
+
+/* --- allocator --- */
+
+static void *
+system_alloc(void *allocator_data, size_t size)
+{
+	(void)allocator_data;
+	return malloc(size);
+}
+
+static void
+system_free(void *allocator_data, void *data)
+{
+	(void)allocator_data;
+	free(data);
+}
+
+static inline void *
+do_alloc(ProtobufCAllocator *allocator, size_t size)
+{
+	return allocator->alloc(allocator->allocator_data, size);
+}
+
+static inline void
+do_free(ProtobufCAllocator *allocator, void *data)
+{
+	if (data != NULL)
+		allocator->free(allocator->allocator_data, data);
+}
+
+/*
+ * This allocator uses the system's malloc() and free(). It is the default
+ * allocator used if NULL is passed as the ProtobufCAllocator to an exported
+ * function.
+ */
+static ProtobufCAllocator protobuf_c__allocator = {
+	.alloc = &system_alloc,
+	.free = &system_free,
+	.allocator_data = NULL,
+};
+
+/* === buffer-simple === */
+
+void
+protobuf_c_buffer_simple_append(ProtobufCBuffer *buffer,
+				size_t len, const uint8_t *data)
+{
+	ProtobufCBufferSimple *simp = (ProtobufCBufferSimple *) buffer;
+	size_t new_len = simp->len + len;
+
+	if (new_len > simp->alloced) {
+		ProtobufCAllocator *allocator = simp->allocator;
+		size_t new_alloced = simp->alloced * 2;
+		uint8_t *new_data;
+
+		if (allocator == NULL)
+			allocator = &protobuf_c__allocator;
+		while (new_alloced < new_len)
+			new_alloced += new_alloced;
+		new_data = do_alloc(allocator, new_alloced);
+		if (!new_data)
+			return;
+		memcpy(new_data, simp->data, simp->len);
+		if (simp->must_free_data)
+			do_free(allocator, simp->data);
+		else
+			simp->must_free_data = TRUE;
+		simp->data = new_data;
+		simp->alloced = new_alloced;
+	}
+	memcpy(simp->data + simp->len, data, len);
+	simp->len = new_len;
+}
+
+/**
+ * \defgroup packedsz protobuf_c_message_get_packed_size() implementation
+ *
+ * Routines mainly used by protobuf_c_message_get_packed_size().
+ *
+ * \ingroup internal
+ * @{
+ */
+
+/**
+ * Return the number of bytes required to store the tag for the field. Includes
+ * 3 bits for the wire-type, and a single bit that denotes the end-of-tag.
+ *
+ * \param number
+ *      Field tag to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+get_tag_size(uint32_t number)
+{
+	if (number < (1UL << 4)) {
+		return 1;
+	} else if (number < (1UL << 11)) {
+		return 2;
+	} else if (number < (1UL << 18)) {
+		return 3;
+	} else if (number < (1UL << 25)) {
+		return 4;
+	} else {
+		return 5;
+	}
+}
+
+/**
+ * Return the number of bytes required to store a variable-length unsigned
+ * 32-bit integer in base-128 varint encoding.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+uint32_size(uint32_t v)
+{
+	if (v < (1UL << 7)) {
+		return 1;
+	} else if (v < (1UL << 14)) {
+		return 2;
+	} else if (v < (1UL << 21)) {
+		return 3;
+	} else if (v < (1UL << 28)) {
+		return 4;
+	} else {
+		return 5;
+	}
+}
+
+/**
+ * Return the number of bytes required to store a variable-length signed 32-bit
+ * integer in base-128 varint encoding.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+int32_size(int32_t v)
+{
+	if (v < 0) {
+		return 10;
+	} else if (v < (1L << 7)) {
+		return 1;
+	} else if (v < (1L << 14)) {
+		return 2;
+	} else if (v < (1L << 21)) {
+		return 3;
+	} else if (v < (1L << 28)) {
+		return 4;
+	} else {
+		return 5;
+	}
+}
+
+/**
+ * Return the ZigZag-encoded 32-bit unsigned integer form of a 32-bit signed
+ * integer.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      ZigZag encoded integer.
+ */
+static inline uint32_t
+zigzag32(int32_t v)
+{
+	// Note:  Using unsigned types prevents undefined behavior
+	return ((uint32_t)v << 1) ^ -((uint32_t)v >> 31);
+}
+
+/**
+ * Return the number of bytes required to store a signed 32-bit integer,
+ * converted to an unsigned 32-bit integer with ZigZag encoding, using base-128
+ * varint encoding.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+sint32_size(int32_t v)
+{
+	return uint32_size(zigzag32(v));
+}
+
+/**
+ * Return the number of bytes required to store a 64-bit unsigned integer in
+ * base-128 varint encoding.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+uint64_size(uint64_t v)
+{
+	uint32_t upper_v = (uint32_t) (v >> 32);
+
+	if (upper_v == 0) {
+		return uint32_size((uint32_t) v);
+	} else if (upper_v < (1UL << 3)) {
+		return 5;
+	} else if (upper_v < (1UL << 10)) {
+		return 6;
+	} else if (upper_v < (1UL << 17)) {
+		return 7;
+	} else if (upper_v < (1UL << 24)) {
+		return 8;
+	} else if (upper_v < (1UL << 31)) {
+		return 9;
+	} else {
+		return 10;
+	}
+}
+
+/**
+ * Return the ZigZag-encoded 64-bit unsigned integer form of a 64-bit signed
+ * integer.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      ZigZag encoded integer.
+ */
+static inline uint64_t
+zigzag64(int64_t v)
+{
+	// Note:  Using unsigned types prevents undefined behavior
+	return ((uint64_t)v << 1) ^ -((uint64_t)v >> 63);
+}
+
+/**
+ * Return the number of bytes required to store a signed 64-bit integer,
+ * converted to an unsigned 64-bit integer with ZigZag encoding, using base-128
+ * varint encoding.
+ *
+ * \param v
+ *      Value to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+sint64_size(int64_t v)
+{
+	return uint64_size(zigzag64(v));
+}
+
+/**
+ * Calculate the serialized size of a single required message field, including
+ * the space needed by the preceding tag.
+ *
+ * \param field
+ *      Field descriptor for member.
+ * \param member
+ *      Field to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+required_field_get_packed_size(const ProtobufCFieldDescriptor *field,
+			       const void *member)
+{
+	size_t rv = get_tag_size(field->id);
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SINT32:
+		return rv + sint32_size(*(const int32_t *) member);
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		return rv + int32_size(*(const int32_t *) member);
+	case PROTOBUF_C_TYPE_UINT32:
+		return rv + uint32_size(*(const uint32_t *) member);
+	case PROTOBUF_C_TYPE_SINT64:
+		return rv + sint64_size(*(const int64_t *) member);
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		return rv + uint64_size(*(const uint64_t *) member);
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+		return rv + 4;
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+		return rv + 8;
+	case PROTOBUF_C_TYPE_BOOL:
+		return rv + 1;
+	case PROTOBUF_C_TYPE_FLOAT:
+		return rv + 4;
+	case PROTOBUF_C_TYPE_DOUBLE:
+		return rv + 8;
+	case PROTOBUF_C_TYPE_STRING: {
+		const char *str = *(char * const *) member;
+		size_t len = str ? strlen(str) : 0;
+		return rv + uint32_size(len) + len;
+	}
+	case PROTOBUF_C_TYPE_BYTES: {
+		size_t len = ((const ProtobufCBinaryData *) member)->len;
+		return rv + uint32_size(len) + len;
+	}
+	case PROTOBUF_C_TYPE_MESSAGE: {
+		const ProtobufCMessage *msg = *(ProtobufCMessage * const *) member;
+		size_t subrv = msg ? protobuf_c_message_get_packed_size(msg) : 0;
+		return rv + uint32_size(subrv) + subrv;
+	}
+	}
+	PROTOBUF_C__ASSERT_NOT_REACHED();
+	return 0;
+}
+
+/**
+ * Calculate the serialized size of a single oneof message field, including
+ * the space needed by the preceding tag. Returns 0 if the oneof field isn't
+ * selected or is not set.
+ *
+ * \param field
+ *      Field descriptor for member.
+ * \param oneof_case
+ *      Enum value that selects the field in the oneof.
+ * \param member
+ *      Field to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+oneof_field_get_packed_size(const ProtobufCFieldDescriptor *field,
+			    uint32_t oneof_case,
+			    const void *member)
+{
+	if (oneof_case != field->id) {
+		return 0;
+	}
+	if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+	    field->type == PROTOBUF_C_TYPE_STRING)
+	{
+		const void *ptr = *(const void * const *) member;
+		if (ptr == NULL || ptr == field->default_value)
+			return 0;
+	}
+	return required_field_get_packed_size(field, member);
+}
+
+/**
+ * Calculate the serialized size of a single optional message field, including
+ * the space needed by the preceding tag. Returns 0 if the optional field isn't
+ * set.
+ *
+ * \param field
+ *      Field descriptor for member.
+ * \param has
+ *      True if the field exists, false if not.
+ * \param member
+ *      Field to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+optional_field_get_packed_size(const ProtobufCFieldDescriptor *field,
+			       const protobuf_c_boolean has,
+			       const void *member)
+{
+	if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+	    field->type == PROTOBUF_C_TYPE_STRING)
+	{
+		const void *ptr = *(const void * const *) member;
+		if (ptr == NULL || ptr == field->default_value)
+			return 0;
+	} else {
+		if (!has)
+			return 0;
+	}
+	return required_field_get_packed_size(field, member);
+}
+
+static protobuf_c_boolean
+field_is_zeroish(const ProtobufCFieldDescriptor *field,
+		 const void *member)
+{
+	protobuf_c_boolean ret = FALSE;
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_BOOL:
+		ret = (0 == *(const protobuf_c_boolean *) member);
+		break;
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_SINT32:
+	case PROTOBUF_C_TYPE_INT32:
+	case PROTOBUF_C_TYPE_UINT32:
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+		ret = (0 == *(const uint32_t *) member);
+		break;
+	case PROTOBUF_C_TYPE_SINT64:
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+		ret = (0 == *(const uint64_t *) member);
+		break;
+	case PROTOBUF_C_TYPE_FLOAT:
+		ret = (0 == *(const float *) member);
+		break;
+	case PROTOBUF_C_TYPE_DOUBLE:
+		ret = (0 == *(const double *) member);
+		break;
+	case PROTOBUF_C_TYPE_STRING:
+		ret = (NULL == *(const char * const *) member) ||
+		      ('\0' == **(const char * const *) member);
+		break;
+	case PROTOBUF_C_TYPE_BYTES:
+	case PROTOBUF_C_TYPE_MESSAGE:
+		ret = (NULL == *(const void * const *) member);
+		break;
+	default:
+		ret = TRUE;
+		break;
+	}
+
+	return ret;
+}
+
+/**
+ * Calculate the serialized size of a single unlabeled message field, including
+ * the space needed by the preceding tag. Returns 0 if the field isn't set or
+ * if it is set to a "zeroish" value (null pointer or 0 for numerical values).
+ * Unlabeled fields are supported only in proto3.
+ *
+ * \param field
+ *      Field descriptor for member.
+ * \param member
+ *      Field to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+unlabeled_field_get_packed_size(const ProtobufCFieldDescriptor *field,
+				const void *member)
+{
+	if (field_is_zeroish(field, member))
+		return 0;
+	return required_field_get_packed_size(field, member);
+}
+
+/**
+ * Calculate the serialized size of repeated message fields, which may consist
+ * of any number of values (including 0). Includes the space needed by the
+ * preceding tags (as needed).
+ *
+ * \param field
+ *      Field descriptor for member.
+ * \param count
+ *      Number of repeated field members.
+ * \param member
+ *      Field to encode.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+repeated_field_get_packed_size(const ProtobufCFieldDescriptor *field,
+			       size_t count, const void *member)
+{
+	size_t header_size;
+	size_t rv = 0;
+	unsigned i;
+	void *array = *(void * const *) member;
+
+	if (count == 0)
+		return 0;
+	header_size = get_tag_size(field->id);
+	if (0 == (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED))
+		header_size *= count;
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SINT32:
+		for (i = 0; i < count; i++)
+			rv += sint32_size(((int32_t *) array)[i]);
+		break;
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		for (i = 0; i < count; i++)
+			rv += int32_size(((int32_t *) array)[i]);
+		break;
+	case PROTOBUF_C_TYPE_UINT32:
+		for (i = 0; i < count; i++)
+			rv += uint32_size(((uint32_t *) array)[i]);
+		break;
+	case PROTOBUF_C_TYPE_SINT64:
+		for (i = 0; i < count; i++)
+			rv += sint64_size(((int64_t *) array)[i]);
+		break;
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		for (i = 0; i < count; i++)
+			rv += uint64_size(((uint64_t *) array)[i]);
+		break;
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		rv += 4 * count;
+		break;
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		rv += 8 * count;
+		break;
+	case PROTOBUF_C_TYPE_BOOL:
+		rv += count;
+		break;
+	case PROTOBUF_C_TYPE_STRING:
+		for (i = 0; i < count; i++) {
+			size_t len = strlen(((char **) array)[i]);
+			rv += uint32_size(len) + len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_BYTES:
+		for (i = 0; i < count; i++) {
+			size_t len = ((ProtobufCBinaryData *) array)[i].len;
+			rv += uint32_size(len) + len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_MESSAGE:
+		for (i = 0; i < count; i++) {
+			size_t len = protobuf_c_message_get_packed_size(
+				((ProtobufCMessage **) array)[i]);
+			rv += uint32_size(len) + len;
+		}
+		break;
+	}
+
+	if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED))
+		header_size += uint32_size(rv);
+	return header_size + rv;
+}
+
+/**
+ * Calculate the serialized size of an unknown field, i.e. one that is passed
+ * through mostly uninterpreted. This is required for forward compatibility if
+ * new fields are added to the message descriptor.
+ *
+ * \param field
+ *      Unknown field type.
+ * \return
+ *      Number of bytes required.
+ */
+static inline size_t
+unknown_field_get_packed_size(const ProtobufCMessageUnknownField *field)
+{
+	return get_tag_size(field->tag) + field->len;
+}
+
+/**@}*/
+
+/*
+ * Calculate the serialized size of the message.
+ */
+size_t protobuf_c_message_get_packed_size(const ProtobufCMessage *message)
+{
+	unsigned i;
+	size_t rv = 0;
+
+	ASSERT_IS_MESSAGE(message);
+	for (i = 0; i < message->descriptor->n_fields; i++) {
+		const ProtobufCFieldDescriptor *field =
+			message->descriptor->fields + i;
+		const void *member =
+			((const char *) message) + field->offset;
+		const void *qmember =
+			((const char *) message) + field->quantifier_offset;
+
+		if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
+			rv += required_field_get_packed_size(field, member);
+		} else if ((field->label == PROTOBUF_C_LABEL_OPTIONAL ||
+			    field->label == PROTOBUF_C_LABEL_NONE) &&
+			   (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF))) {
+			rv += oneof_field_get_packed_size(
+				field,
+				*(const uint32_t *) qmember,
+				member
+			);
+		} else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) {
+			rv += optional_field_get_packed_size(
+				field,
+				*(protobuf_c_boolean *) qmember,
+				member
+			);
+		} else if (field->label == PROTOBUF_C_LABEL_NONE) {
+			rv += unlabeled_field_get_packed_size(
+				field,
+				member
+			);
+		} else {
+			rv += repeated_field_get_packed_size(
+				field,
+				*(const size_t *) qmember,
+				member
+			);
+		}
+	}
+	for (i = 0; i < message->n_unknown_fields; i++)
+		rv += unknown_field_get_packed_size(&message->unknown_fields[i]);
+	return rv;
+}
+
+/**
+ * \defgroup pack protobuf_c_message_pack() implementation
+ *
+ * Routines mainly used by protobuf_c_message_pack().
+ *
+ * \ingroup internal
+ * @{
+ */
+
+/**
+ * Pack an unsigned 32-bit integer in base-128 varint encoding and return the
+ * number of bytes written, which must be 5 or less.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+uint32_pack(uint32_t value, uint8_t *out)
+{
+	unsigned rv = 0;
+
+	if (value >= 0x80) {
+		out[rv++] = value | 0x80;
+		value >>= 7;
+		if (value >= 0x80) {
+			out[rv++] = value | 0x80;
+			value >>= 7;
+			if (value >= 0x80) {
+				out[rv++] = value | 0x80;
+				value >>= 7;
+				if (value >= 0x80) {
+					out[rv++] = value | 0x80;
+					value >>= 7;
+				}
+			}
+		}
+	}
+	/* assert: value<128 */
+	out[rv++] = value;
+	return rv;
+}
+
+/**
+ * Pack a signed 32-bit integer and return the number of bytes written,
+ * passed as unsigned to avoid implementation-specific behavior.
+ * Negative numbers are encoded as two's complement 64-bit integers.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+int32_pack(uint32_t value, uint8_t *out)
+{
+	if ((int32_t)value < 0) {
+		out[0] = value | 0x80;
+		out[1] = (value >> 7) | 0x80;
+		out[2] = (value >> 14) | 0x80;
+		out[3] = (value >> 21) | 0x80;
+		out[4] = (value >> 28) | 0xf0;
+		out[5] = out[6] = out[7] = out[8] = 0xff;
+		out[9] = 0x01;
+		return 10;
+	} else {
+		return uint32_pack(value, out);
+	}
+}
+
+/**
+ * Pack a signed 32-bit integer using ZigZag encoding and return the number of
+ * bytes written.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+sint32_pack(int32_t value, uint8_t *out)
+{
+	return uint32_pack(zigzag32(value), out);
+}
+
+/**
+ * Pack a 64-bit unsigned integer using base-128 varint encoding and return the
+ * number of bytes written.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+uint64_pack(uint64_t value, uint8_t *out)
+{
+	uint32_t hi = (uint32_t) (value >> 32);
+	uint32_t lo = (uint32_t) value;
+	unsigned rv;
+
+	if (hi == 0)
+		return uint32_pack((uint32_t) lo, out);
+	out[0] = (lo) | 0x80;
+	out[1] = (lo >> 7) | 0x80;
+	out[2] = (lo >> 14) | 0x80;
+	out[3] = (lo >> 21) | 0x80;
+	if (hi < 8) {
+		out[4] = (hi << 4) | (lo >> 28);
+		return 5;
+	} else {
+		out[4] = ((hi & 7) << 4) | (lo >> 28) | 0x80;
+		hi >>= 3;
+	}
+	rv = 5;
+	while (hi >= 128) {
+		out[rv++] = hi | 0x80;
+		hi >>= 7;
+	}
+	out[rv++] = hi;
+	return rv;
+}
+
+/**
+ * Pack a 64-bit signed integer in ZigZag encoding and return the number of
+ * bytes written.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+sint64_pack(int64_t value, uint8_t *out)
+{
+	return uint64_pack(zigzag64(value), out);
+}
+
+/**
+ * Pack a 32-bit quantity in little-endian byte order. Used for protobuf wire
+ * types fixed32, sfixed32, float. Similar to "htole32".
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+fixed32_pack(uint32_t value, void *out)
+{
+#if !defined(WORDS_BIGENDIAN)
+	memcpy(out, &value, 4);
+#else
+	uint8_t *buf = out;
+
+	buf[0] = value;
+	buf[1] = value >> 8;
+	buf[2] = value >> 16;
+	buf[3] = value >> 24;
+#endif
+	return 4;
+}
+
+/**
+ * Pack a 64-bit quantity in little-endian byte order. Used for protobuf wire
+ * types fixed64, sfixed64, double. Similar to "htole64".
+ *
+ * \todo The big-endian impl is really only good for 32-bit machines, a 64-bit
+ * version would be appreciated, plus a way to decide to use 64-bit math where
+ * convenient.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+fixed64_pack(uint64_t value, void *out)
+{
+#if !defined(WORDS_BIGENDIAN)
+	memcpy(out, &value, 8);
+#else
+	fixed32_pack(value, out);
+	fixed32_pack(value >> 32, ((char *) out) + 4);
+#endif
+	return 8;
+}
+
+/**
+ * Pack a boolean value as an integer and return the number of bytes written.
+ *
+ * \todo Perhaps on some platforms *out = !!value would be a better impl, b/c
+ * that is idiomatic C++ in some STL implementations.
+ *
+ * \param value
+ *      Value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+boolean_pack(protobuf_c_boolean value, uint8_t *out)
+{
+	*out = value ? TRUE : FALSE;
+	return 1;
+}
+
+/**
+ * Pack a NUL-terminated C string and return the number of bytes written. The
+ * output includes a length delimiter.
+ *
+ * The NULL pointer is treated as an empty string. This isn't really necessary,
+ * but it allows people to leave required strings blank. (See Issue #13 in the
+ * bug tracker for a little more explanation).
+ *
+ * \param str
+ *      String to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+string_pack(const char *str, uint8_t *out)
+{
+	if (str == NULL) {
+		out[0] = 0;
+		return 1;
+	} else {
+		size_t len = strlen(str);
+		size_t rv = uint32_pack(len, out);
+		memcpy(out + rv, str, len);
+		return rv + len;
+	}
+}
+
+/**
+ * Pack a ProtobufCBinaryData and return the number of bytes written. The output
+ * includes a length delimiter.
+ *
+ * \param bd
+ *      ProtobufCBinaryData to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+binary_data_pack(const ProtobufCBinaryData *bd, uint8_t *out)
+{
+	size_t len = bd->len;
+	size_t rv = uint32_pack(len, out);
+	memcpy(out + rv, bd->data, len);
+	return rv + len;
+}
+
+/**
+ * Pack a ProtobufCMessage and return the number of bytes written. The output
+ * includes a length delimiter.
+ *
+ * \param message
+ *      ProtobufCMessage object to pack.
+ * \param[out] out
+ *      Packed message.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static inline size_t
+prefixed_message_pack(const ProtobufCMessage *message, uint8_t *out)
+{
+	if (message == NULL) {
+		out[0] = 0;
+		return 1;
+	} else {
+		size_t rv = protobuf_c_message_pack(message, out + 1);
+		uint32_t rv_packed_size = uint32_size(rv);
+		if (rv_packed_size != 1)
+			memmove(out + rv_packed_size, out + 1, rv);
+		return uint32_pack(rv, out) + rv;
+	}
+}
+
+/**
+ * Pack a field tag.
+ *
+ * Wire-type will be added in required_field_pack().
+ *
+ * \todo Just call uint64_pack on 64-bit platforms.
+ *
+ * \param id
+ *      Tag value to encode.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+tag_pack(uint32_t id, uint8_t *out)
+{
+	if (id < (1UL << (32 - 3)))
+		return uint32_pack(id << 3, out);
+	else
+		return uint64_pack(((uint64_t) id) << 3, out);
+}
+
+/**
+ * Pack a required field and return the number of bytes written.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param member
+ *      The field member.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+required_field_pack(const ProtobufCFieldDescriptor *field,
+		    const void *member, uint8_t *out)
+{
+	size_t rv = tag_pack(field->id, out);
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SINT32:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		return rv + sint32_pack(*(const int32_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		return rv + int32_pack(*(const int32_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_UINT32:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		return rv + uint32_pack(*(const uint32_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_SINT64:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		return rv + sint64_pack(*(const int64_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		return rv + uint64_pack(*(const uint64_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_32BIT;
+		return rv + fixed32_pack(*(const uint32_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_64BIT;
+		return rv + fixed64_pack(*(const uint64_t *) member, out + rv);
+	case PROTOBUF_C_TYPE_BOOL:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		return rv + boolean_pack(*(const protobuf_c_boolean *) member, out + rv);
+	case PROTOBUF_C_TYPE_STRING:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		return rv + string_pack(*(char *const *) member, out + rv);
+	case PROTOBUF_C_TYPE_BYTES:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		return rv + binary_data_pack((const ProtobufCBinaryData *) member, out + rv);
+	case PROTOBUF_C_TYPE_MESSAGE:
+		out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		return rv + prefixed_message_pack(*(ProtobufCMessage * const *) member, out + rv);
+	}
+	PROTOBUF_C__ASSERT_NOT_REACHED();
+	return 0;
+}
+
+/**
+ * Pack a oneof field and return the number of bytes written. Only packs the
+ * field that is selected by the case enum.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param oneof_case
+ *      Enum value that selects the field in the oneof.
+ * \param member
+ *      The field member.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+oneof_field_pack(const ProtobufCFieldDescriptor *field,
+		 uint32_t oneof_case,
+		 const void *member, uint8_t *out)
+{
+	if (oneof_case != field->id) {
+		return 0;
+	}
+	if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+	    field->type == PROTOBUF_C_TYPE_STRING)
+	{
+		const void *ptr = *(const void * const *) member;
+		if (ptr == NULL || ptr == field->default_value)
+			return 0;
+	}
+	return required_field_pack(field, member, out);
+}
+
+/**
+ * Pack an optional field and return the number of bytes written.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param has
+ *      Whether the field is set.
+ * \param member
+ *      The field member.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+optional_field_pack(const ProtobufCFieldDescriptor *field,
+		    const protobuf_c_boolean has,
+		    const void *member, uint8_t *out)
+{
+	if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+	    field->type == PROTOBUF_C_TYPE_STRING)
+	{
+		const void *ptr = *(const void * const *) member;
+		if (ptr == NULL || ptr == field->default_value)
+			return 0;
+	} else {
+		if (!has)
+			return 0;
+	}
+	return required_field_pack(field, member, out);
+}
+
+/**
+ * Pack an unlabeled field and return the number of bytes written.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param member
+ *      The field member.
+ * \param[out] out
+ *      Packed value.
+ * \return
+ *      Number of bytes written to `out`.
+ */
+static size_t
+unlabeled_field_pack(const ProtobufCFieldDescriptor *field,
+		     const void *member, uint8_t *out)
+{
+	if (field_is_zeroish(field, member))
+		return 0;
+	return required_field_pack(field, member, out);
+}
+
+/**
+ * Given a field type, return the in-memory size.
+ *
+ * \todo Implement as a table lookup.
+ *
+ * \param type
+ *      Field type.
+ * \return
+ *      Size of the field.
+ */
+static inline size_t
+sizeof_elt_in_repeated_array(ProtobufCType type)
+{
+	switch (type) {
+	case PROTOBUF_C_TYPE_SINT32:
+	case PROTOBUF_C_TYPE_INT32:
+	case PROTOBUF_C_TYPE_UINT32:
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+	case PROTOBUF_C_TYPE_ENUM:
+		return 4;
+	case PROTOBUF_C_TYPE_SINT64:
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		return 8;
+	case PROTOBUF_C_TYPE_BOOL:
+		return sizeof(protobuf_c_boolean);
+	case PROTOBUF_C_TYPE_STRING:
+	case PROTOBUF_C_TYPE_MESSAGE:
+		return sizeof(void *);
+	case PROTOBUF_C_TYPE_BYTES:
+		return sizeof(ProtobufCBinaryData);
+	}
+	PROTOBUF_C__ASSERT_NOT_REACHED();
+	return 0;
+}
+
+/**
+ * Pack an array of 32-bit quantities.
+ *
+ * \param[out] out
+ *      Destination.
+ * \param[in] in
+ *      Source.
+ * \param[in] n
+ *      Number of elements in the source array.
+ */
+static void
+copy_to_little_endian_32(void *out, const void *in, const unsigned n)
+{
+#if !defined(WORDS_BIGENDIAN)
+	memcpy(out, in, n * 4);
+#else
+	unsigned i;
+	const uint32_t *ini = in;
+	for (i = 0; i < n; i++)
+		fixed32_pack(ini[i], (uint32_t *) out + i);
+#endif
+}
+
+/**
+ * Pack an array of 64-bit quantities.
+ *
+ * \param[out] out
+ *      Destination.
+ * \param[in] in
+ *      Source.
+ * \param[in] n
+ *      Number of elements in the source array.
+ */
+static void
+copy_to_little_endian_64(void *out, const void *in, const unsigned n)
+{
+#if !defined(WORDS_BIGENDIAN)
+	memcpy(out, in, n * 8);
+#else
+	unsigned i;
+	const uint64_t *ini = in;
+	for (i = 0; i < n; i++)
+		fixed64_pack(ini[i], (uint64_t *) out + i);
+#endif
+}
+
+/**
+ * Get the minimum number of bytes required to pack a field value of a
+ * particular type.
+ *
+ * \param type
+ *      Field type.
+ * \return
+ *      Number of bytes.
+ */
+static unsigned
+get_type_min_size(ProtobufCType type)
+{
+	if (type == PROTOBUF_C_TYPE_SFIXED32 ||
+	    type == PROTOBUF_C_TYPE_FIXED32 ||
+	    type == PROTOBUF_C_TYPE_FLOAT)
+	{
+		return 4;
+	}
+	if (type == PROTOBUF_C_TYPE_SFIXED64 ||
+	    type == PROTOBUF_C_TYPE_FIXED64 ||
+	    type == PROTOBUF_C_TYPE_DOUBLE)
+	{
+		return 8;
+	}
+	return 1;
+}
+
+/**
+ * Packs the elements of a repeated field and returns the serialised field and
+ * its length.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param count
+ *      Number of elements in the repeated field array.
+ * \param member
+ *      Pointer to the elements for this repeated field.
+ * \param[out] out
+ *      Serialised representation of the repeated field.
+ * \return
+ *      Number of bytes serialised to `out`.
+ */
+static size_t
+repeated_field_pack(const ProtobufCFieldDescriptor *field,
+		    size_t count, const void *member, uint8_t *out)
+{
+	void *array = *(void * const *) member;
+	unsigned i;
+
+	if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED)) {
+		unsigned header_len;
+		unsigned len_start;
+		unsigned min_length;
+		unsigned payload_len;
+		unsigned length_size_min;
+		unsigned actual_length_size;
+		uint8_t *payload_at;
+
+		if (count == 0)
+			return 0;
+		header_len = tag_pack(field->id, out);
+		out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		len_start = header_len;
+		min_length = get_type_min_size(field->type) * count;
+		length_size_min = uint32_size(min_length);
+		header_len += length_size_min;
+		payload_at = out + header_len;
+
+		switch (field->type) {
+		case PROTOBUF_C_TYPE_SFIXED32:
+		case PROTOBUF_C_TYPE_FIXED32:
+		case PROTOBUF_C_TYPE_FLOAT:
+			copy_to_little_endian_32(payload_at, array, count);
+			payload_at += count * 4;
+			break;
+		case PROTOBUF_C_TYPE_SFIXED64:
+		case PROTOBUF_C_TYPE_FIXED64:
+		case PROTOBUF_C_TYPE_DOUBLE:
+			copy_to_little_endian_64(payload_at, array, count);
+			payload_at += count * 8;
+			break;
+		case PROTOBUF_C_TYPE_ENUM:
+		case PROTOBUF_C_TYPE_INT32: {
+			const int32_t *arr = (const int32_t *) array;
+			for (i = 0; i < count; i++)
+				payload_at += int32_pack(arr[i], payload_at);
+			break;
+		}
+		case PROTOBUF_C_TYPE_SINT32: {
+			const int32_t *arr = (const int32_t *) array;
+			for (i = 0; i < count; i++)
+				payload_at += sint32_pack(arr[i], payload_at);
+			break;
+		}
+		case PROTOBUF_C_TYPE_SINT64: {
+			const int64_t *arr = (const int64_t *) array;
+			for (i = 0; i < count; i++)
+				payload_at += sint64_pack(arr[i], payload_at);
+			break;
+		}
+		case PROTOBUF_C_TYPE_UINT32: {
+			const uint32_t *arr = (const uint32_t *) array;
+			for (i = 0; i < count; i++)
+				payload_at += uint32_pack(arr[i], payload_at);
+			break;
+		}
+		case PROTOBUF_C_TYPE_INT64:
+		case PROTOBUF_C_TYPE_UINT64: {
+			const uint64_t *arr = (const uint64_t *) array;
+			for (i = 0; i < count; i++)
+				payload_at += uint64_pack(arr[i], payload_at);
+			break;
+		}
+		case PROTOBUF_C_TYPE_BOOL: {
+			const protobuf_c_boolean *arr = (const protobuf_c_boolean *) array;
+			for (i = 0; i < count; i++)
+				payload_at += boolean_pack(arr[i], payload_at);
+			break;
+		}
+		default:
+			PROTOBUF_C__ASSERT_NOT_REACHED();
+		}
+
+		payload_len = payload_at - (out + header_len);
+		actual_length_size = uint32_size(payload_len);
+		if (length_size_min != actual_length_size) {
+			assert(actual_length_size == length_size_min + 1);
+			memmove(out + header_len + 1, out + header_len,
+				payload_len);
+			header_len++;
+		}
+		uint32_pack(payload_len, out + len_start);
+		return header_len + payload_len;
+	} else {
+		/* not "packed" cased */
+		/* CONSIDER: optimize this case a bit (by putting the loop inside the switch) */
+		size_t rv = 0;
+		unsigned siz = sizeof_elt_in_repeated_array(field->type);
+
+		for (i = 0; i < count; i++) {
+			rv += required_field_pack(field, array, out + rv);
+			array = (char *)array + siz;
+		}
+		return rv;
+	}
+}
+
+static size_t
+unknown_field_pack(const ProtobufCMessageUnknownField *field, uint8_t *out)
+{
+	size_t rv = tag_pack(field->tag, out);
+	out[0] |= field->wire_type;
+	memcpy(out + rv, field->data, field->len);
+	return rv + field->len;
+}
+
+/**@}*/
+
+size_t
+protobuf_c_message_pack(const ProtobufCMessage *message, uint8_t *out)
+{
+	unsigned i;
+	size_t rv = 0;
+
+	ASSERT_IS_MESSAGE(message);
+	for (i = 0; i < message->descriptor->n_fields; i++) {
+		const ProtobufCFieldDescriptor *field =
+			message->descriptor->fields + i;
+		const void *member = ((const char *) message) + field->offset;
+
+		/*
+		 * It doesn't hurt to compute qmember (a pointer to the
+		 * quantifier field of the structure), but the pointer is only
+		 * valid if the field is:
+		 *  - a repeated field, or
+		 *  - a field that is part of a oneof
+		 *  - an optional field that isn't a pointer type
+		 * (Meaning: not a message or a string).
+		 */
+		const void *qmember =
+			((const char *) message) + field->quantifier_offset;
+
+		if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
+			rv += required_field_pack(field, member, out + rv);
+		} else if ((field->label == PROTOBUF_C_LABEL_OPTIONAL ||
+			    field->label == PROTOBUF_C_LABEL_NONE) &&
+			   (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF))) {
+			rv += oneof_field_pack(
+				field,
+				*(const uint32_t *) qmember,
+				member,
+				out + rv
+			);
+		} else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) {
+			rv += optional_field_pack(
+				field,
+				*(const protobuf_c_boolean *) qmember,
+				member,
+				out + rv
+			);
+		} else if (field->label == PROTOBUF_C_LABEL_NONE) {
+			rv += unlabeled_field_pack(field, member, out + rv);
+		} else {
+			rv += repeated_field_pack(field, *(const size_t *) qmember,
+				member, out + rv);
+		}
+	}
+	for (i = 0; i < message->n_unknown_fields; i++)
+		rv += unknown_field_pack(&message->unknown_fields[i], out + rv);
+	return rv;
+}
+
+/**
+ * \defgroup packbuf protobuf_c_message_pack_to_buffer() implementation
+ *
+ * Routines mainly used by protobuf_c_message_pack_to_buffer().
+ *
+ * \ingroup internal
+ * @{
+ */
+
+/**
+ * Pack a required field to a virtual buffer.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param member
+ *      The element to be packed.
+ * \param[out] buffer
+ *      Virtual buffer to append data to.
+ * \return
+ *      Number of bytes packed.
+ */
+static size_t
+required_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
+			      const void *member, ProtobufCBuffer *buffer)
+{
+	size_t rv;
+	uint8_t scratch[MAX_UINT64_ENCODED_SIZE * 2];
+
+	rv = tag_pack(field->id, scratch);
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SINT32:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		rv += sint32_pack(*(const int32_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		rv += int32_pack(*(const int32_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_UINT32:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		rv += uint32_pack(*(const uint32_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_SINT64:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		rv += sint64_pack(*(const int64_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		rv += uint64_pack(*(const uint64_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_32BIT;
+		rv += fixed32_pack(*(const uint32_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_64BIT;
+		rv += fixed64_pack(*(const uint64_t *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_BOOL:
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT;
+		rv += boolean_pack(*(const protobuf_c_boolean *) member, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		break;
+	case PROTOBUF_C_TYPE_STRING: {
+		const char *str = *(char *const *) member;
+		size_t sublen = str ? strlen(str) : 0;
+
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		rv += uint32_pack(sublen, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		buffer->append(buffer, sublen, (const uint8_t *) str);
+		rv += sublen;
+		break;
+	}
+	case PROTOBUF_C_TYPE_BYTES: {
+		const ProtobufCBinaryData *bd = ((const ProtobufCBinaryData *) member);
+		size_t sublen = bd->len;
+
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		rv += uint32_pack(sublen, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		buffer->append(buffer, sublen, bd->data);
+		rv += sublen;
+		break;
+	}
+	case PROTOBUF_C_TYPE_MESSAGE: {
+		const ProtobufCMessage *msg = *(ProtobufCMessage * const *) member;
+		
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		if (msg == NULL) {
+			rv += uint32_pack(0, scratch + rv);
+			buffer->append(buffer, rv, scratch);
+		} else {
+			size_t sublen = protobuf_c_message_get_packed_size(msg);
+			rv += uint32_pack(sublen, scratch + rv);
+			buffer->append(buffer, rv, scratch);
+			protobuf_c_message_pack_to_buffer(msg, buffer);
+			rv += sublen;
+		}
+		break;
+	}
+	default:
+		PROTOBUF_C__ASSERT_NOT_REACHED();
+	}
+	return rv;
+}
+
+/**
+ * Pack a oneof field to a buffer. Only packs the field that is selected by the case enum.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param oneof_case
+ *      Enum value that selects the field in the oneof.
+ * \param member
+ *      The element to be packed.
+ * \param[out] buffer
+ *      Virtual buffer to append data to.
+ * \return
+ *      Number of bytes serialised to `buffer`.
+ */
+static size_t
+oneof_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
+			   uint32_t oneof_case,
+			   const void *member, ProtobufCBuffer *buffer)
+{
+	if (oneof_case != field->id) {
+		return 0;
+	}
+	if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+	    field->type == PROTOBUF_C_TYPE_STRING)
+	{
+		const void *ptr = *(const void *const *) member;
+		if (ptr == NULL || ptr == field->default_value)
+			return 0;
+	}
+	return required_field_pack_to_buffer(field, member, buffer);
+}
+
+/**
+ * Pack an optional field to a buffer.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param has
+ *      Whether the field is set.
+ * \param member
+ *      The element to be packed.
+ * \param[out] buffer
+ *      Virtual buffer to append data to.
+ * \return
+ *      Number of bytes serialised to `buffer`.
+ */
+static size_t
+optional_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
+			      const protobuf_c_boolean has,
+			      const void *member, ProtobufCBuffer *buffer)
+{
+	if (field->type == PROTOBUF_C_TYPE_MESSAGE ||
+	    field->type == PROTOBUF_C_TYPE_STRING)
+	{
+		const void *ptr = *(const void *const *) member;
+		if (ptr == NULL || ptr == field->default_value)
+			return 0;
+	} else {
+		if (!has)
+			return 0;
+	}
+	return required_field_pack_to_buffer(field, member, buffer);
+}
+
+/**
+ * Pack an unlabeled field to a buffer.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param member
+ *      The element to be packed.
+ * \param[out] buffer
+ *      Virtual buffer to append data to.
+ * \return
+ *      Number of bytes serialised to `buffer`.
+ */
+static size_t
+unlabeled_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
+			       const void *member, ProtobufCBuffer *buffer)
+{
+	if (field_is_zeroish(field, member))
+		return 0;
+	return required_field_pack_to_buffer(field, member, buffer);
+}
+
+/**
+ * Get the packed size of an array of same field type.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param count
+ *      Number of elements of this type.
+ * \param array
+ *      The elements to get the size of.
+ * \return
+ *      Number of bytes required.
+ */
+static size_t
+get_packed_payload_length(const ProtobufCFieldDescriptor *field,
+			  unsigned count, const void *array)
+{
+	unsigned rv = 0;
+	unsigned i;
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		return count * 4;
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		return count * 8;
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32: {
+		const int32_t *arr = (const int32_t *) array;
+		for (i = 0; i < count; i++)
+			rv += int32_size(arr[i]);
+		break;
+	}
+	case PROTOBUF_C_TYPE_SINT32: {
+		const int32_t *arr = (const int32_t *) array;
+		for (i = 0; i < count; i++)
+			rv += sint32_size(arr[i]);
+		break;
+	}
+	case PROTOBUF_C_TYPE_UINT32: {
+		const uint32_t *arr = (const uint32_t *) array;
+		for (i = 0; i < count; i++)
+			rv += uint32_size(arr[i]);
+		break;
+	}
+	case PROTOBUF_C_TYPE_SINT64: {
+		const int64_t *arr = (const int64_t *) array;
+		for (i = 0; i < count; i++)
+			rv += sint64_size(arr[i]);
+		break;
+	}
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64: {
+		const uint64_t *arr = (const uint64_t *) array;
+		for (i = 0; i < count; i++)
+			rv += uint64_size(arr[i]);
+		break;
+	}
+	case PROTOBUF_C_TYPE_BOOL:
+		return count;
+	default:
+		PROTOBUF_C__ASSERT_NOT_REACHED();
+	}
+	return rv;
+}
+
+/**
+ * Pack an array of same field type to a virtual buffer.
+ *
+ * \param field
+ *      Field descriptor.
+ * \param count
+ *      Number of elements of this type.
+ * \param array
+ *      The elements to get the size of.
+ * \param[out] buffer
+ *      Virtual buffer to append data to.
+ * \return
+ *      Number of bytes packed.
+ */
+static size_t
+pack_buffer_packed_payload(const ProtobufCFieldDescriptor *field,
+			   unsigned count, const void *array,
+			   ProtobufCBuffer *buffer)
+{
+	uint8_t scratch[16];
+	size_t rv = 0;
+	unsigned i;
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+#if !defined(WORDS_BIGENDIAN)
+		rv = count * 4;
+		goto no_packing_needed;
+#else
+		for (i = 0; i < count; i++) {
+			unsigned len = fixed32_pack(((uint32_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+#endif
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+#if !defined(WORDS_BIGENDIAN)
+		rv = count * 8;
+		goto no_packing_needed;
+#else
+		for (i = 0; i < count; i++) {
+			unsigned len = fixed64_pack(((uint64_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+#endif
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		for (i = 0; i < count; i++) {
+			unsigned len = int32_pack(((int32_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_SINT32:
+		for (i = 0; i < count; i++) {
+			unsigned len = sint32_pack(((int32_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_UINT32:
+		for (i = 0; i < count; i++) {
+			unsigned len = uint32_pack(((uint32_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_SINT64:
+		for (i = 0; i < count; i++) {
+			unsigned len = sint64_pack(((int64_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		for (i = 0; i < count; i++) {
+			unsigned len = uint64_pack(((uint64_t *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		break;
+	case PROTOBUF_C_TYPE_BOOL:
+		for (i = 0; i < count; i++) {
+			unsigned len = boolean_pack(((protobuf_c_boolean *) array)[i], scratch);
+			buffer->append(buffer, len, scratch);
+			rv += len;
+		}
+		return count;
+	default:
+		PROTOBUF_C__ASSERT_NOT_REACHED();
+	}
+	return rv;
+
+#if !defined(WORDS_BIGENDIAN)
+no_packing_needed:
+	buffer->append(buffer, rv, array);
+	return rv;
+#endif
+}
+
+static size_t
+repeated_field_pack_to_buffer(const ProtobufCFieldDescriptor *field,
+			      unsigned count, const void *member,
+			      ProtobufCBuffer *buffer)
+{
+	char *array = *(char * const *) member;
+
+	if (count == 0)
+		return 0;
+	if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED)) {
+		uint8_t scratch[MAX_UINT64_ENCODED_SIZE * 2];
+		size_t rv = tag_pack(field->id, scratch);
+		size_t payload_len = get_packed_payload_length(field, count, array);
+		size_t tmp;
+
+		scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
+		rv += uint32_pack(payload_len, scratch + rv);
+		buffer->append(buffer, rv, scratch);
+		tmp = pack_buffer_packed_payload(field, count, array, buffer);
+		assert(tmp == payload_len);
+		return rv + payload_len;
+	} else {
+		size_t siz;
+		unsigned i;
+		/* CONSIDER: optimize this case a bit (by putting the loop inside the switch) */
+		unsigned rv = 0;
+
+		siz = sizeof_elt_in_repeated_array(field->type);
+		for (i = 0; i < count; i++) {
+			rv += required_field_pack_to_buffer(field, array, buffer);
+			array += siz;
+		}
+		return rv;
+	}
+}
+
+static size_t
+unknown_field_pack_to_buffer(const ProtobufCMessageUnknownField *field,
+			     ProtobufCBuffer *buffer)
+{
+	uint8_t header[MAX_UINT64_ENCODED_SIZE];
+	size_t rv = tag_pack(field->tag, header);
+
+	header[0] |= field->wire_type;
+	buffer->append(buffer, rv, header);
+	buffer->append(buffer, field->len, field->data);
+	return rv + field->len;
+}
+
+/**@}*/
+
+size_t
+protobuf_c_message_pack_to_buffer(const ProtobufCMessage *message,
+				  ProtobufCBuffer *buffer)
+{
+	unsigned i;
+	size_t rv = 0;
+
+	ASSERT_IS_MESSAGE(message);
+	for (i = 0; i < message->descriptor->n_fields; i++) {
+		const ProtobufCFieldDescriptor *field =
+			message->descriptor->fields + i;
+		const void *member =
+			((const char *) message) + field->offset;
+		const void *qmember =
+			((const char *) message) + field->quantifier_offset;
+
+		if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
+			rv += required_field_pack_to_buffer(field, member, buffer);
+		} else if ((field->label == PROTOBUF_C_LABEL_OPTIONAL ||
+			    field->label == PROTOBUF_C_LABEL_NONE) &&
+			   (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF))) {
+			rv += oneof_field_pack_to_buffer(
+				field,
+				*(const uint32_t *) qmember,
+				member,
+				buffer
+			);
+		} else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) {
+			rv += optional_field_pack_to_buffer(
+				field,
+				*(const protobuf_c_boolean *) qmember,
+				member,
+				buffer
+			);
+		} else if (field->label == PROTOBUF_C_LABEL_NONE) {
+			rv += unlabeled_field_pack_to_buffer(
+				field,
+				member,
+				buffer
+			);
+		} else {
+			rv += repeated_field_pack_to_buffer(
+				field,
+				*(const size_t *) qmember,
+				member,
+				buffer
+			);
+		}
+	}
+	for (i = 0; i < message->n_unknown_fields; i++)
+		rv += unknown_field_pack_to_buffer(&message->unknown_fields[i], buffer);
+
+	return rv;
+}
+
+/**
+ * \defgroup unpack unpacking implementation
+ *
+ * Routines mainly used by the unpacking functions.
+ *
+ * \ingroup internal
+ * @{
+ */
+
+static inline int
+int_range_lookup(unsigned n_ranges, const ProtobufCIntRange *ranges, int value)
+{
+	unsigned n;
+	unsigned start;
+
+	if (n_ranges == 0)
+		return -1;
+	start = 0;
+	n = n_ranges;
+	while (n > 1) {
+		unsigned mid = start + n / 2;
+
+		if (value < ranges[mid].start_value) {
+			n = mid - start;
+		} else if (value >= ranges[mid].start_value +
+			   (int) (ranges[mid + 1].orig_index -
+				  ranges[mid].orig_index))
+		{
+			unsigned new_start = mid + 1;
+			n = start + n - new_start;
+			start = new_start;
+		} else
+			return (value - ranges[mid].start_value) +
+			    ranges[mid].orig_index;
+	}
+	if (n > 0) {
+		unsigned start_orig_index = ranges[start].orig_index;
+		unsigned range_size =
+			ranges[start + 1].orig_index - start_orig_index;
+
+		if (ranges[start].start_value <= value &&
+		    value < (int) (ranges[start].start_value + range_size))
+		{
+			return (value - ranges[start].start_value) +
+			    start_orig_index;
+		}
+	}
+	return -1;
+}
+
+static size_t
+parse_tag_and_wiretype(size_t len,
+		       const uint8_t *data,
+		       uint32_t *tag_out,
+		       uint8_t *wiretype_out)
+{
+	unsigned max_rv = len > 5 ? 5 : len;
+	uint32_t tag = (data[0] & 0x7f) >> 3;
+	unsigned shift = 4;
+	unsigned rv;
+
+	/* 0 is not a valid tag value */
+	if ((data[0] & 0xf8) == 0) {
+		return 0;
+	}
+
+	*wiretype_out = data[0] & 7;
+	if ((data[0] & 0x80) == 0) {
+		*tag_out = tag;
+		return 1;
+	}
+	for (rv = 1; rv < max_rv; rv++) {
+		if (data[rv] & 0x80) {
+			tag |= (data[rv] & 0x7f) << shift;
+			shift += 7;
+		} else {
+			tag |= data[rv] << shift;
+			*tag_out = tag;
+			return rv + 1;
+		}
+	}
+	return 0; /* error: bad header */
+}
+
+/* sizeof(ScannedMember) must be <= (1UL<<BOUND_SIZEOF_SCANNED_MEMBER_LOG2) */
+#define BOUND_SIZEOF_SCANNED_MEMBER_LOG2 5
+typedef struct ScannedMember ScannedMember;
+/** Field as it's being read. */
+struct ScannedMember {
+	uint32_t tag;              /**< Field tag. */
+	uint8_t wire_type;         /**< Field type. */
+	uint8_t length_prefix_len; /**< Prefix length. */
+	const ProtobufCFieldDescriptor *field; /**< Field descriptor. */
+	size_t len;                /**< Field length. */
+	const uint8_t *data;       /**< Pointer to field data. */
+};
+
+static inline size_t
+scan_length_prefixed_data(size_t len, const uint8_t *data,
+			  size_t *prefix_len_out)
+{
+	unsigned hdr_max = len < 5 ? len : 5;
+	unsigned hdr_len;
+	size_t val = 0;
+	unsigned i;
+	unsigned shift = 0;
+
+	for (i = 0; i < hdr_max; i++) {
+		val |= ((size_t)data[i] & 0x7f) << shift;
+		shift += 7;
+		if ((data[i] & 0x80) == 0)
+			break;
+	}
+	if (i == hdr_max) {
+		PROTOBUF_C_UNPACK_ERROR("error parsing length for length-prefixed data");
+		return 0;
+	}
+	hdr_len = i + 1;
+	*prefix_len_out = hdr_len;
+	if (val > INT_MAX) {
+		// Protobuf messages should always be less than 2 GiB in size.
+		// We also want to return early here so that hdr_len + val does
+		// not overflow on 32-bit systems.
+		PROTOBUF_C_UNPACK_ERROR("length prefix of %lu is too large",
+			(unsigned long int)val);
+		return 0;
+	}
+	if (hdr_len + val > len) {
+		PROTOBUF_C_UNPACK_ERROR("data too short after length-prefix of %lu",
+			(unsigned long int)val);
+		return 0;
+	}
+	return hdr_len + val;
+}
+
+static size_t
+max_b128_numbers(size_t len, const uint8_t *data)
+{
+	size_t rv = 0;
+	while (len--)
+		if ((*data++ & 0x80) == 0)
+			++rv;
+	return rv;
+}
+
+/**@}*/
+
+/**
+ * Merge earlier message into a latter message.
+ *
+ * For numeric types and strings, if the same value appears multiple
+ * times, the parser accepts the last value it sees. For embedded
+ * message fields, the parser merges multiple instances of the same
+ * field. That is, all singular scalar fields in the latter instance
+ * replace those in the former, singular embedded messages are merged,
+ * and repeated fields are concatenated.
+ *
+ * The earlier message should be freed after calling this function, as
+ * some of its fields may have been reused and changed to their default
+ * values during the merge.
+ */
+static protobuf_c_boolean
+merge_messages(ProtobufCMessage *earlier_msg,
+	       ProtobufCMessage *latter_msg,
+	       ProtobufCAllocator *allocator)
+{
+	unsigned i;
+	const ProtobufCFieldDescriptor *fields =
+		latter_msg->descriptor->fields;
+	for (i = 0; i < latter_msg->descriptor->n_fields; i++) {
+		if (fields[i].label == PROTOBUF_C_LABEL_REPEATED) {
+			size_t *n_earlier =
+				STRUCT_MEMBER_PTR(size_t, earlier_msg,
+						  fields[i].quantifier_offset);
+			uint8_t **p_earlier =
+				STRUCT_MEMBER_PTR(uint8_t *, earlier_msg,
+						  fields[i].offset);
+			size_t *n_latter =
+				STRUCT_MEMBER_PTR(size_t, latter_msg,
+						  fields[i].quantifier_offset);
+			uint8_t **p_latter =
+				STRUCT_MEMBER_PTR(uint8_t *, latter_msg,
+						  fields[i].offset);
+
+			if (*n_earlier > 0) {
+				if (*n_latter > 0) {
+					/* Concatenate the repeated field */
+					size_t el_size =
+						sizeof_elt_in_repeated_array(fields[i].type);
+					uint8_t *new_field;
+
+					new_field = do_alloc(allocator,
+						(*n_earlier + *n_latter) * el_size);
+					if (!new_field)
+						return FALSE;
+
+					memcpy(new_field, *p_earlier,
+					       *n_earlier * el_size);
+					memcpy(new_field +
+					       *n_earlier * el_size,
+					       *p_latter,
+					       *n_latter * el_size);
+
+					do_free(allocator, *p_latter);
+					do_free(allocator, *p_earlier);
+					*p_latter = new_field;
+					*n_latter = *n_earlier + *n_latter;
+				} else {
+					/* Zero copy the repeated field from the earlier message */
+					*n_latter = *n_earlier;
+					*p_latter = *p_earlier;
+				}
+				/* Make sure the field does not get double freed */
+				*n_earlier = 0;
+				*p_earlier = 0;
+			}
+		} else if (fields[i].label == PROTOBUF_C_LABEL_OPTIONAL ||
+			   fields[i].label == PROTOBUF_C_LABEL_NONE) {
+			const ProtobufCFieldDescriptor *field;
+			uint32_t *earlier_case_p = STRUCT_MEMBER_PTR(uint32_t,
+								     earlier_msg,
+								     fields[i].
+								     quantifier_offset);
+			uint32_t *latter_case_p = STRUCT_MEMBER_PTR(uint32_t,
+								    latter_msg,
+								    fields[i].
+								    quantifier_offset);
+			protobuf_c_boolean need_to_merge = FALSE;
+			void *earlier_elem;
+			void *latter_elem;
+			const void *def_val;
+
+			if (fields[i].flags & PROTOBUF_C_FIELD_FLAG_ONEOF) {
+				if (*latter_case_p == 0) {
+					/* lookup correct oneof field */
+					int field_index =
+						int_range_lookup(
+							latter_msg->descriptor
+							->n_field_ranges,
+							latter_msg->descriptor
+							->field_ranges,
+							*earlier_case_p);
+					if (field_index < 0)
+						return FALSE;
+					field = latter_msg->descriptor->fields +
+						field_index;
+				} else {
+					/* Oneof is present in the latter message, move on */
+					continue;
+				}
+			} else {
+				field = &fields[i];
+			}
+
+			earlier_elem = STRUCT_MEMBER_P(earlier_msg, field->offset);
+			latter_elem = STRUCT_MEMBER_P(latter_msg, field->offset);
+			def_val = field->default_value;
+
+			switch (field->type) {
+			case PROTOBUF_C_TYPE_MESSAGE: {
+				ProtobufCMessage *em = *(ProtobufCMessage **) earlier_elem;
+				ProtobufCMessage *lm = *(ProtobufCMessage **) latter_elem;
+				if (em != NULL) {
+					if (lm != NULL) {
+						if (!merge_messages(em, lm, allocator))
+							return FALSE;
+						/* Already merged */
+						need_to_merge = FALSE;
+					} else {
+						/* Zero copy the message */
+						need_to_merge = TRUE;
+					}
+				}
+				break;
+			}
+			case PROTOBUF_C_TYPE_BYTES: {
+				uint8_t *e_data =
+					((ProtobufCBinaryData *) earlier_elem)->data;
+				uint8_t *l_data =
+					((ProtobufCBinaryData *) latter_elem)->data;
+				const ProtobufCBinaryData *d_bd =
+					(ProtobufCBinaryData *) def_val;
+
+				need_to_merge =
+					(e_data != NULL &&
+					 (d_bd == NULL ||
+					  e_data != d_bd->data)) &&
+					(l_data == NULL ||
+					 (d_bd != NULL &&
+					  l_data == d_bd->data));
+				break;
+			}
+			case PROTOBUF_C_TYPE_STRING: {
+				char *e_str = *(char **) earlier_elem;
+				char *l_str = *(char **) latter_elem;
+				const char *d_str = def_val;
+
+				need_to_merge = e_str != d_str && l_str == d_str;
+				break;
+			}
+			default: {
+				/* Could be has field or case enum, the logic is
+				 * equivalent, since 0 (FALSE) means not set for
+				 * oneof */
+				need_to_merge = (*earlier_case_p != 0) &&
+						(*latter_case_p == 0);
+				break;
+			}
+			}
+
+			if (need_to_merge) {
+				size_t el_size =
+					sizeof_elt_in_repeated_array(field->type);
+				memcpy(latter_elem, earlier_elem, el_size);
+				/*
+				 * Reset the element from the old message to 0
+				 * to make sure earlier message deallocation
+				 * doesn't corrupt zero-copied data in the new
+				 * message, earlier message will be freed after
+				 * this function is called anyway
+				 */
+				memset(earlier_elem, 0, el_size);
+
+				if (field->quantifier_offset != 0) {
+					/* Set the has field or the case enum,
+					 * if applicable */
+					*latter_case_p = *earlier_case_p;
+					*earlier_case_p = 0;
+				}
+			}
+		}
+	}
+	return TRUE;
+}
+
+/**
+ * Count packed elements.
+ *
+ * Given a raw slab of packed-repeated values, determine the number of
+ * elements. This function detects certain kinds of errors but not
+ * others; the remaining error checking is done by
+ * parse_packed_repeated_member().
+ */
+static protobuf_c_boolean
+count_packed_elements(ProtobufCType type,
+		      size_t len, const uint8_t *data, size_t *count_out)
+{
+	switch (type) {
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		if (len % 4 != 0) {
+			PROTOBUF_C_UNPACK_ERROR("length must be a multiple of 4 for fixed-length 32-bit types");
+			return FALSE;
+		}
+		*count_out = len / 4;
+		return TRUE;
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		if (len % 8 != 0) {
+			PROTOBUF_C_UNPACK_ERROR("length must be a multiple of 8 for fixed-length 64-bit types");
+			return FALSE;
+		}
+		*count_out = len / 8;
+		return TRUE;
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+	case PROTOBUF_C_TYPE_SINT32:
+	case PROTOBUF_C_TYPE_UINT32:
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_SINT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		*count_out = max_b128_numbers(len, data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_BOOL:
+		*count_out = len;
+		return TRUE;
+	case PROTOBUF_C_TYPE_STRING:
+	case PROTOBUF_C_TYPE_BYTES:
+	case PROTOBUF_C_TYPE_MESSAGE:
+	default:
+		PROTOBUF_C_UNPACK_ERROR("bad protobuf-c type %u for packed-repeated", type);
+		return FALSE;
+	}
+}
+
+static inline uint32_t
+parse_uint32(unsigned len, const uint8_t *data)
+{
+	uint32_t rv = data[0] & 0x7f;
+	if (len > 1) {
+		rv |= ((uint32_t) (data[1] & 0x7f) << 7);
+		if (len > 2) {
+			rv |= ((uint32_t) (data[2] & 0x7f) << 14);
+			if (len > 3) {
+				rv |= ((uint32_t) (data[3] & 0x7f) << 21);
+				if (len > 4)
+					rv |= ((uint32_t) (data[4]) << 28);
+			}
+		}
+	}
+	return rv;
+}
+
+static inline uint32_t
+parse_int32(unsigned len, const uint8_t *data)
+{
+	return parse_uint32(len, data);
+}
+
+static inline int32_t
+unzigzag32(uint32_t v)
+{
+	// Note:  Using unsigned types prevents undefined behavior
+	return (int32_t)((v >> 1) ^ -(v & 1));
+}
+
+static inline uint32_t
+parse_fixed_uint32(const uint8_t *data)
+{
+#if !defined(WORDS_BIGENDIAN)
+	uint32_t t;
+	memcpy(&t, data, 4);
+	return t;
+#else
+	return data[0] |
+		((uint32_t) (data[1]) << 8) |
+		((uint32_t) (data[2]) << 16) |
+		((uint32_t) (data[3]) << 24);
+#endif
+}
+
+static uint64_t
+parse_uint64(unsigned len, const uint8_t *data)
+{
+	unsigned shift, i;
+	uint64_t rv;
+
+	if (len < 5)
+		return parse_uint32(len, data);
+	rv = ((uint64_t) (data[0] & 0x7f)) |
+		((uint64_t) (data[1] & 0x7f) << 7) |
+		((uint64_t) (data[2] & 0x7f) << 14) |
+		((uint64_t) (data[3] & 0x7f) << 21);
+	shift = 28;
+	for (i = 4; i < len; i++) {
+		rv |= (((uint64_t) (data[i] & 0x7f)) << shift);
+		shift += 7;
+	}
+	return rv;
+}
+
+static inline int64_t
+unzigzag64(uint64_t v)
+{
+	// Note:  Using unsigned types prevents undefined behavior
+	return (int64_t)((v >> 1) ^ -(v & 1));
+}
+
+static inline uint64_t
+parse_fixed_uint64(const uint8_t *data)
+{
+#if !defined(WORDS_BIGENDIAN)
+	uint64_t t;
+	memcpy(&t, data, 8);
+	return t;
+#else
+	return (uint64_t) parse_fixed_uint32(data) |
+		(((uint64_t) parse_fixed_uint32(data + 4)) << 32);
+#endif
+}
+
+static protobuf_c_boolean
+parse_boolean(unsigned len, const uint8_t *data)
+{
+	unsigned i;
+	for (i = 0; i < len; i++)
+		if (data[i] & 0x7f)
+			return TRUE;
+	return FALSE;
+}
+
+static protobuf_c_boolean
+parse_required_member(ScannedMember *scanned_member,
+		      void *member,
+		      ProtobufCAllocator *allocator,
+		      protobuf_c_boolean maybe_clear)
+{
+	unsigned len = scanned_member->len;
+	const uint8_t *data = scanned_member->data;
+	uint8_t wire_type = scanned_member->wire_type;
+
+	switch (scanned_member->field->type) {
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT)
+			return FALSE;
+		*(int32_t *) member = parse_int32(len, data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_UINT32:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT)
+			return FALSE;
+		*(uint32_t *) member = parse_uint32(len, data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_SINT32:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT)
+			return FALSE;
+		*(int32_t *) member = unzigzag32(parse_uint32(len, data));
+		return TRUE;
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_32BIT)
+			return FALSE;
+		*(uint32_t *) member = parse_fixed_uint32(data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT)
+			return FALSE;
+		*(uint64_t *) member = parse_uint64(len, data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_SINT64:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT)
+			return FALSE;
+		*(int64_t *) member = unzigzag64(parse_uint64(len, data));
+		return TRUE;
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_64BIT)
+			return FALSE;
+		*(uint64_t *) member = parse_fixed_uint64(data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_BOOL:
+		*(protobuf_c_boolean *) member = parse_boolean(len, data);
+		return TRUE;
+	case PROTOBUF_C_TYPE_STRING: {
+		char **pstr = member;
+		unsigned pref_len = scanned_member->length_prefix_len;
+
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED)
+			return FALSE;
+
+		if (maybe_clear && *pstr != NULL) {
+			const char *def = scanned_member->field->default_value;
+			if (*pstr != NULL && *pstr != def)
+				do_free(allocator, *pstr);
+		}
+		*pstr = do_alloc(allocator, len - pref_len + 1);
+		if (*pstr == NULL)
+			return FALSE;
+		memcpy(*pstr, data + pref_len, len - pref_len);
+		(*pstr)[len - pref_len] = 0;
+		return TRUE;
+	}
+	case PROTOBUF_C_TYPE_BYTES: {
+		ProtobufCBinaryData *bd = member;
+		const ProtobufCBinaryData *def_bd;
+		unsigned pref_len = scanned_member->length_prefix_len;
+
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED)
+			return FALSE;
+
+		def_bd = scanned_member->field->default_value;
+		if (maybe_clear &&
+		    bd->data != NULL &&
+		    (def_bd == NULL || bd->data != def_bd->data))
+		{
+			do_free(allocator, bd->data);
+		}
+		if (len > pref_len) {
+			bd->data = do_alloc(allocator, len - pref_len);
+			if (bd->data == NULL)
+				return FALSE;
+			memcpy(bd->data, data + pref_len, len - pref_len);
+		} else {
+			bd->data = NULL;
+		}
+		bd->len = len - pref_len;
+		return TRUE;
+	}
+	case PROTOBUF_C_TYPE_MESSAGE: {
+		ProtobufCMessage **pmessage = member;
+		ProtobufCMessage *subm;
+		const ProtobufCMessage *def_mess;
+		protobuf_c_boolean merge_successful = TRUE;
+		unsigned pref_len = scanned_member->length_prefix_len;
+
+		if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED)
+			return FALSE;
+
+		def_mess = scanned_member->field->default_value;
+		if (len >= pref_len)
+			subm = protobuf_c_message_unpack(scanned_member->field->descriptor,
+							 allocator,
+							 len - pref_len,
+							 data + pref_len);
+		else
+			subm = NULL;
+
+		if (maybe_clear &&
+		    *pmessage != NULL &&
+		    *pmessage != def_mess)
+		{
+			if (subm != NULL)
+				merge_successful = merge_messages(*pmessage, subm, allocator);
+			/* Delete the previous message */
+			protobuf_c_message_free_unpacked(*pmessage, allocator);
+		}
+		*pmessage = subm;
+		if (subm == NULL || !merge_successful)
+			return FALSE;
+		return TRUE;
+	}
+	}
+	return FALSE;
+}
+
+static protobuf_c_boolean
+parse_oneof_member (ScannedMember *scanned_member,
+		    void *member,
+		    ProtobufCMessage *message,
+		    ProtobufCAllocator *allocator)
+{
+	uint32_t *oneof_case = STRUCT_MEMBER_PTR(uint32_t, message,
+					       scanned_member->field->quantifier_offset);
+
+	/* If we have already parsed a member of this oneof, free it. */
+	if (*oneof_case != 0) {
+		const ProtobufCFieldDescriptor *old_field;
+		size_t el_size;
+		/* lookup field */
+		int field_index =
+			int_range_lookup(message->descriptor->n_field_ranges,
+					 message->descriptor->field_ranges,
+					 *oneof_case);
+		if (field_index < 0)
+			return FALSE;
+		old_field = message->descriptor->fields + field_index;
+		el_size = sizeof_elt_in_repeated_array(old_field->type);
+
+		switch (old_field->type) {
+	        case PROTOBUF_C_TYPE_STRING: {
+			char **pstr = member;
+			const char *def = old_field->default_value;
+			if (*pstr != NULL && *pstr != def)
+				do_free(allocator, *pstr);
+			break;
+	        }
+		case PROTOBUF_C_TYPE_BYTES: {
+			ProtobufCBinaryData *bd = member;
+			const ProtobufCBinaryData *def_bd = old_field->default_value;
+			if (bd->data != NULL &&
+			   (def_bd == NULL || bd->data != def_bd->data))
+			{
+				do_free(allocator, bd->data);
+			}
+			break;
+	        }
+		case PROTOBUF_C_TYPE_MESSAGE: {
+			ProtobufCMessage **pmessage = member;
+			const ProtobufCMessage *def_mess = old_field->default_value;
+			if (*pmessage != NULL && *pmessage != def_mess)
+				protobuf_c_message_free_unpacked(*pmessage, allocator);
+			break;
+	        }
+		default:
+			break;
+		}
+
+		memset (member, 0, el_size);
+	}
+	if (!parse_required_member (scanned_member, member, allocator, TRUE))
+		return FALSE;
+
+	*oneof_case = scanned_member->tag;
+	return TRUE;
+}
+
+
+static protobuf_c_boolean
+parse_optional_member(ScannedMember *scanned_member,
+		      void *member,
+		      ProtobufCMessage *message,
+		      ProtobufCAllocator *allocator)
+{
+	if (!parse_required_member(scanned_member, member, allocator, TRUE))
+		return FALSE;
+	if (scanned_member->field->quantifier_offset != 0)
+		STRUCT_MEMBER(protobuf_c_boolean,
+			      message,
+			      scanned_member->field->quantifier_offset) = TRUE;
+	return TRUE;
+}
+
+static protobuf_c_boolean
+parse_repeated_member(ScannedMember *scanned_member,
+		      void *member,
+		      ProtobufCMessage *message,
+		      ProtobufCAllocator *allocator)
+{
+	const ProtobufCFieldDescriptor *field = scanned_member->field;
+	size_t *p_n = STRUCT_MEMBER_PTR(size_t, message, field->quantifier_offset);
+	size_t siz = sizeof_elt_in_repeated_array(field->type);
+	char *array = *(char **) member;
+
+	if (!parse_required_member(scanned_member, array + siz * (*p_n),
+				   allocator, FALSE))
+	{
+		return FALSE;
+	}
+	*p_n += 1;
+	return TRUE;
+}
+
+static unsigned
+scan_varint(unsigned len, const uint8_t *data)
+{
+	unsigned i;
+	if (len > 10)
+		len = 10;
+	for (i = 0; i < len; i++)
+		if ((data[i] & 0x80) == 0)
+			break;
+	if (i == len)
+		return 0;
+	return i + 1;
+}
+
+static protobuf_c_boolean
+parse_packed_repeated_member(ScannedMember *scanned_member,
+			     void *member,
+			     ProtobufCMessage *message)
+{
+	const ProtobufCFieldDescriptor *field = scanned_member->field;
+	size_t *p_n = STRUCT_MEMBER_PTR(size_t, message, field->quantifier_offset);
+	size_t siz = sizeof_elt_in_repeated_array(field->type);
+	void *array = *(char **) member + siz * (*p_n);
+	const uint8_t *at = scanned_member->data + scanned_member->length_prefix_len;
+	size_t rem = scanned_member->len - scanned_member->length_prefix_len;
+	size_t count = 0;
+#if defined(WORDS_BIGENDIAN)
+	unsigned i;
+#endif
+
+	switch (field->type) {
+	case PROTOBUF_C_TYPE_SFIXED32:
+	case PROTOBUF_C_TYPE_FIXED32:
+	case PROTOBUF_C_TYPE_FLOAT:
+		count = (scanned_member->len - scanned_member->length_prefix_len) / 4;
+#if !defined(WORDS_BIGENDIAN)
+		goto no_unpacking_needed;
+#else
+		for (i = 0; i < count; i++) {
+			((uint32_t *) array)[i] = parse_fixed_uint32(at);
+			at += 4;
+		}
+		break;
+#endif
+	case PROTOBUF_C_TYPE_SFIXED64:
+	case PROTOBUF_C_TYPE_FIXED64:
+	case PROTOBUF_C_TYPE_DOUBLE:
+		count = (scanned_member->len - scanned_member->length_prefix_len) / 8;
+#if !defined(WORDS_BIGENDIAN)
+		goto no_unpacking_needed;
+#else
+		for (i = 0; i < count; i++) {
+			((uint64_t *) array)[i] = parse_fixed_uint64(at);
+			at += 8;
+		}
+		break;
+#endif
+	case PROTOBUF_C_TYPE_ENUM:
+	case PROTOBUF_C_TYPE_INT32:
+		while (rem > 0) {
+			unsigned s = scan_varint(rem, at);
+			if (s == 0) {
+				PROTOBUF_C_UNPACK_ERROR("bad packed-repeated int32 value");
+				return FALSE;
+			}
+			((int32_t *) array)[count++] = parse_int32(s, at);
+			at += s;
+			rem -= s;
+		}
+		break;
+	case PROTOBUF_C_TYPE_SINT32:
+		while (rem > 0) {
+			unsigned s = scan_varint(rem, at);
+			if (s == 0) {
+				PROTOBUF_C_UNPACK_ERROR("bad packed-repeated sint32 value");
+				return FALSE;
+			}
+			((int32_t *) array)[count++] = unzigzag32(parse_uint32(s, at));
+			at += s;
+			rem -= s;
+		}
+		break;
+	case PROTOBUF_C_TYPE_UINT32:
+		while (rem > 0) {
+			unsigned s = scan_varint(rem, at);
+			if (s == 0) {
+				PROTOBUF_C_UNPACK_ERROR("bad packed-repeated enum or uint32 value");
+				return FALSE;
+			}
+			((uint32_t *) array)[count++] = parse_uint32(s, at);
+			at += s;
+			rem -= s;
+		}
+		break;
+
+	case PROTOBUF_C_TYPE_SINT64:
+		while (rem > 0) {
+			unsigned s = scan_varint(rem, at);
+			if (s == 0) {
+				PROTOBUF_C_UNPACK_ERROR("bad packed-repeated sint64 value");
+				return FALSE;
+			}
+			((int64_t *) array)[count++] = unzigzag64(parse_uint64(s, at));
+			at += s;
+			rem -= s;
+		}
+		break;
+	case PROTOBUF_C_TYPE_INT64:
+	case PROTOBUF_C_TYPE_UINT64:
+		while (rem > 0) {
+			unsigned s = scan_varint(rem, at);
+			if (s == 0) {
+				PROTOBUF_C_UNPACK_ERROR("bad packed-repeated int64/uint64 value");
+				return FALSE;
+			}
+			((int64_t *) array)[count++] = parse_uint64(s, at);
+			at += s;
+			rem -= s;
+		}
+		break;
+	case PROTOBUF_C_TYPE_BOOL:
+		while (rem > 0) {
+			unsigned s = scan_varint(rem, at);
+			if (s == 0) {
+				PROTOBUF_C_UNPACK_ERROR("bad packed-repeated boolean value");
+				return FALSE;
+			}
+			((protobuf_c_boolean *) array)[count++] = parse_boolean(s, at);
+			at += s;
+			rem -= s;
+		}
+		break;
+	default:
+		PROTOBUF_C__ASSERT_NOT_REACHED();
+	}
+	*p_n += count;
+	return TRUE;
+
+#if !defined(WORDS_BIGENDIAN)
+no_unpacking_needed:
+	memcpy(array, at, count * siz);
+	*p_n += count;
+	return TRUE;
+#endif
+}
+
+static protobuf_c_boolean
+is_packable_type(ProtobufCType type)
+{
+	return
+		type != PROTOBUF_C_TYPE_STRING &&
+		type != PROTOBUF_C_TYPE_BYTES &&
+		type != PROTOBUF_C_TYPE_MESSAGE;
+}
+
+static protobuf_c_boolean
+parse_member(ScannedMember *scanned_member,
+	     ProtobufCMessage *message,
+	     ProtobufCAllocator *allocator)
+{
+	const ProtobufCFieldDescriptor *field = scanned_member->field;
+	void *member;
+
+	if (field == NULL) {
+		ProtobufCMessageUnknownField *ufield =
+			message->unknown_fields +
+			(message->n_unknown_fields++);
+		ufield->tag = scanned_member->tag;
+		ufield->wire_type = scanned_member->wire_type;
+		ufield->len = scanned_member->len;
+		ufield->data = do_alloc(allocator, scanned_member->len);
+		if (ufield->data == NULL)
+			return FALSE;
+		memcpy(ufield->data, scanned_member->data, ufield->len);
+		return TRUE;
+	}
+	member = (char *) message + field->offset;
+	switch (field->label) {
+	case PROTOBUF_C_LABEL_REQUIRED:
+		return parse_required_member(scanned_member, member,
+					     allocator, TRUE);
+	case PROTOBUF_C_LABEL_OPTIONAL:
+	case PROTOBUF_C_LABEL_NONE:
+		if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) {
+			return parse_oneof_member(scanned_member, member,
+						  message, allocator);
+		} else {
+			return parse_optional_member(scanned_member, member,
+						     message, allocator);
+		}
+	case PROTOBUF_C_LABEL_REPEATED:
+		if (scanned_member->wire_type ==
+		    PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED &&
+		    (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED) ||
+		     is_packable_type(field->type)))
+		{
+			return parse_packed_repeated_member(scanned_member,
+							    member, message);
+		} else {
+			return parse_repeated_member(scanned_member,
+						     member, message,
+						     allocator);
+		}
+	}
+	PROTOBUF_C__ASSERT_NOT_REACHED();
+	return 0;
+}
+
+/**
+ * Initialise messages generated by old code.
+ *
+ * This function is used if desc->message_init == NULL (which occurs
+ * for old code, and which would be useful to support allocating
+ * descriptors dynamically).
+ */
+static void
+message_init_generic(const ProtobufCMessageDescriptor *desc,
+		     ProtobufCMessage *message)
+{
+	unsigned i;
+
+	memset(message, 0, desc->sizeof_message);
+	message->descriptor = desc;
+	for (i = 0; i < desc->n_fields; i++) {
+		if (desc->fields[i].default_value != NULL &&
+		    desc->fields[i].label != PROTOBUF_C_LABEL_REPEATED)
+		{
+			void *field =
+				STRUCT_MEMBER_P(message, desc->fields[i].offset);
+			const void *dv = desc->fields[i].default_value;
+
+			switch (desc->fields[i].type) {
+			case PROTOBUF_C_TYPE_INT32:
+			case PROTOBUF_C_TYPE_SINT32:
+			case PROTOBUF_C_TYPE_SFIXED32:
+			case PROTOBUF_C_TYPE_UINT32:
+			case PROTOBUF_C_TYPE_FIXED32:
+			case PROTOBUF_C_TYPE_FLOAT:
+			case PROTOBUF_C_TYPE_ENUM:
+				memcpy(field, dv, 4);
+				break;
+			case PROTOBUF_C_TYPE_INT64:
+			case PROTOBUF_C_TYPE_SINT64:
+			case PROTOBUF_C_TYPE_SFIXED64:
+			case PROTOBUF_C_TYPE_UINT64:
+			case PROTOBUF_C_TYPE_FIXED64:
+			case PROTOBUF_C_TYPE_DOUBLE:
+				memcpy(field, dv, 8);
+				break;
+			case PROTOBUF_C_TYPE_BOOL:
+				memcpy(field, dv, sizeof(protobuf_c_boolean));
+				break;
+			case PROTOBUF_C_TYPE_BYTES:
+				memcpy(field, dv, sizeof(ProtobufCBinaryData));
+				break;
+
+			case PROTOBUF_C_TYPE_STRING:
+			case PROTOBUF_C_TYPE_MESSAGE:
+				/*
+				 * The next line essentially implements a cast
+				 * from const, which is totally unavoidable.
+				 */
+				*(const void **) field = dv;
+				break;
+			}
+		}
+	}
+}
+
+/**@}*/
+
+/*
+ * ScannedMember slabs (an unpacking implementation detail). Before doing real
+ * unpacking, we first scan through the elements to see how many there are (for
+ * repeated fields), and which field to use (for non-repeated fields given
+ * twice).
+ *
+ * In order to avoid allocations for small messages, we keep a stack-allocated
+ * slab of ScannedMembers of size FIRST_SCANNED_MEMBER_SLAB_SIZE (16). After we
+ * fill that up, we allocate each slab twice as large as the previous one.
+ */
+#define FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2 4
+
+/*
+ * The number of slabs, including the stack-allocated ones; choose the number so
+ * that we would overflow if we needed a slab larger than provided.
+ */
+#define MAX_SCANNED_MEMBER_SLAB			\
+  (sizeof(unsigned int)*8 - 1			\
+   - BOUND_SIZEOF_SCANNED_MEMBER_LOG2		\
+   - FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2)
+
+#define REQUIRED_FIELD_BITMAP_SET(index)	\
+	(required_fields_bitmap[(index)/8] |= (1UL<<((index)%8)))
+
+#define REQUIRED_FIELD_BITMAP_IS_SET(index)	\
+	(required_fields_bitmap[(index)/8] & (1UL<<((index)%8)))
+
+ProtobufCMessage *
+protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
+			  ProtobufCAllocator *allocator,
+			  size_t len, const uint8_t *data)
+{
+	ProtobufCMessage *rv;
+	size_t rem = len;
+	const uint8_t *at = data;
+	const ProtobufCFieldDescriptor *last_field = desc->fields + 0;
+	ScannedMember first_member_slab[1UL <<
+					FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2];
+
+	/*
+	 * scanned_member_slabs[i] is an array of arrays of ScannedMember.
+	 * The first slab (scanned_member_slabs[0] is just a pointer to
+	 * first_member_slab), above. All subsequent slabs will be allocated
+	 * using the allocator.
+	 */
+	ScannedMember *scanned_member_slabs[MAX_SCANNED_MEMBER_SLAB + 1];
+	unsigned which_slab = 0; /* the slab we are currently populating */
+	unsigned in_slab_index = 0; /* number of members in the slab */
+	size_t n_unknown = 0;
+	unsigned f;
+	unsigned j;
+	unsigned i_slab;
+	unsigned last_field_index = 0;
+	unsigned required_fields_bitmap_len;
+	unsigned char required_fields_bitmap_stack[16];
+	unsigned char *required_fields_bitmap = required_fields_bitmap_stack;
+	protobuf_c_boolean required_fields_bitmap_alloced = FALSE;
+
+	ASSERT_IS_MESSAGE_DESCRIPTOR(desc);
+
+	if (allocator == NULL)
+		allocator = &protobuf_c__allocator;
+
+	rv = do_alloc(allocator, desc->sizeof_message);
+	if (!rv)
+		return (NULL);
+	scanned_member_slabs[0] = first_member_slab;
+
+	required_fields_bitmap_len = (desc->n_fields + 7) / 8;
+	if (required_fields_bitmap_len > sizeof(required_fields_bitmap_stack)) {
+		required_fields_bitmap = do_alloc(allocator, required_fields_bitmap_len);
+		if (!required_fields_bitmap) {
+			do_free(allocator, rv);
+			return (NULL);
+		}
+		required_fields_bitmap_alloced = TRUE;
+	}
+	memset(required_fields_bitmap, 0, required_fields_bitmap_len);
+
+	/*
+	 * Generated code always defines "message_init". However, we provide a
+	 * fallback for (1) users of old protobuf-c generated-code that do not
+	 * provide the function, and (2) descriptors constructed from some other
+	 * source (most likely, direct construction from the .proto file).
+	 */
+	if (desc->message_init != NULL)
+		protobuf_c_message_init(desc, rv);
+	else
+		message_init_generic(desc, rv);
+
+	while (rem > 0) {
+		uint32_t tag;
+		uint8_t wire_type;
+		size_t used = parse_tag_and_wiretype(rem, at, &tag, &wire_type);
+		const ProtobufCFieldDescriptor *field;
+		ScannedMember tmp;
+
+		if (used == 0) {
+			PROTOBUF_C_UNPACK_ERROR("error parsing tag/wiretype at offset %u",
+						(unsigned) (at - data));
+			goto error_cleanup_during_scan;
+		}
+		/*
+		 * \todo Consider optimizing for field[1].id == tag, if field[1]
+		 * exists!
+		 */
+		if (last_field == NULL || last_field->id != tag) {
+			/* lookup field */
+			int field_index =
+			    int_range_lookup(desc->n_field_ranges,
+					     desc->field_ranges,
+					     tag);
+			if (field_index < 0) {
+				field = NULL;
+				n_unknown++;
+			} else {
+				field = desc->fields + field_index;
+				last_field = field;
+				last_field_index = field_index;
+			}
+		} else {
+			field = last_field;
+		}
+
+		if (field != NULL && field->label == PROTOBUF_C_LABEL_REQUIRED)
+			REQUIRED_FIELD_BITMAP_SET(last_field_index);
+
+		at += used;
+		rem -= used;
+		tmp.tag = tag;
+		tmp.wire_type = wire_type;
+		tmp.field = field;
+		tmp.data = at;
+		tmp.length_prefix_len = 0;
+
+		switch (wire_type) {
+		case PROTOBUF_C_WIRE_TYPE_VARINT: {
+			unsigned max_len = rem < 10 ? rem : 10;
+			unsigned i;
+
+			for (i = 0; i < max_len; i++)
+				if ((at[i] & 0x80) == 0)
+					break;
+			if (i == max_len) {
+				PROTOBUF_C_UNPACK_ERROR("unterminated varint at offset %u",
+							(unsigned) (at - data));
+				goto error_cleanup_during_scan;
+			}
+			tmp.len = i + 1;
+			break;
+		}
+		case PROTOBUF_C_WIRE_TYPE_64BIT:
+			if (rem < 8) {
+				PROTOBUF_C_UNPACK_ERROR("too short after 64bit wiretype at offset %u",
+							(unsigned) (at - data));
+				goto error_cleanup_during_scan;
+			}
+			tmp.len = 8;
+			break;
+		case PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED: {
+			size_t pref_len;
+
+			tmp.len = scan_length_prefixed_data(rem, at, &pref_len);
+			if (tmp.len == 0) {
+				/* NOTE: scan_length_prefixed_data calls UNPACK_ERROR */
+				goto error_cleanup_during_scan;
+			}
+			tmp.length_prefix_len = pref_len;
+			break;
+		}
+		case PROTOBUF_C_WIRE_TYPE_32BIT:
+			if (rem < 4) {
+				PROTOBUF_C_UNPACK_ERROR("too short after 32bit wiretype at offset %u",
+					      (unsigned) (at - data));
+				goto error_cleanup_during_scan;
+			}
+			tmp.len = 4;
+			break;
+		default:
+			PROTOBUF_C_UNPACK_ERROR("unsupported tag %u at offset %u",
+						wire_type, (unsigned) (at - data));
+			goto error_cleanup_during_scan;
+		}
+
+		if (in_slab_index == (1UL <<
+			(which_slab + FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2)))
+		{
+			size_t size;
+
+			in_slab_index = 0;
+			if (which_slab == MAX_SCANNED_MEMBER_SLAB) {
+				PROTOBUF_C_UNPACK_ERROR("too many fields");
+				goto error_cleanup_during_scan;
+			}
+			which_slab++;
+			size = sizeof(ScannedMember)
+				<< (which_slab + FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2);
+			scanned_member_slabs[which_slab] = do_alloc(allocator, size);
+			if (scanned_member_slabs[which_slab] == NULL)
+				goto error_cleanup_during_scan;
+		}
+		scanned_member_slabs[which_slab][in_slab_index++] = tmp;
+
+		if (field != NULL && field->label == PROTOBUF_C_LABEL_REPEATED) {
+			size_t *n = STRUCT_MEMBER_PTR(size_t, rv,
+						      field->quantifier_offset);
+			if (wire_type == PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED &&
+			    (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED) ||
+			     is_packable_type(field->type)))
+			{
+				size_t count;
+				if (!count_packed_elements(field->type,
+							   tmp.len -
+							   tmp.length_prefix_len,
+							   tmp.data +
+							   tmp.length_prefix_len,
+							   &count))
+				{
+					PROTOBUF_C_UNPACK_ERROR("counting packed elements");
+					goto error_cleanup_during_scan;
+				}
+				*n += count;
+			} else {
+				*n += 1;
+			}
+		}
+
+		at += tmp.len;
+		rem -= tmp.len;
+	}
+
+	/* allocate space for repeated fields, also check that all required fields have been set */
+	for (f = 0; f < desc->n_fields; f++) {
+		const ProtobufCFieldDescriptor *field = desc->fields + f;
+		if (field == NULL) {
+			continue;
+		}
+		if (field->label == PROTOBUF_C_LABEL_REPEATED) {
+			size_t siz =
+			    sizeof_elt_in_repeated_array(field->type);
+			size_t *n_ptr =
+			    STRUCT_MEMBER_PTR(size_t, rv,
+					      field->quantifier_offset);
+			if (*n_ptr != 0) {
+				unsigned n = *n_ptr;
+				void *a;
+				*n_ptr = 0;
+				assert(rv->descriptor != NULL);
+#define CLEAR_REMAINING_N_PTRS()                                              \
+              for(f++;f < desc->n_fields; f++)                                \
+                {                                                             \
+                  field = desc->fields + f;                                   \
+                  if (field->label == PROTOBUF_C_LABEL_REPEATED)              \
+                    STRUCT_MEMBER (size_t, rv, field->quantifier_offset) = 0; \
+                }
+				a = do_alloc(allocator, siz * n);
+				if (!a) {
+					CLEAR_REMAINING_N_PTRS();
+					goto error_cleanup;
+				}
+				STRUCT_MEMBER(void *, rv, field->offset) = a;
+			}
+		} else if (field->label == PROTOBUF_C_LABEL_REQUIRED) {
+			if (field->default_value == NULL &&
+			    !REQUIRED_FIELD_BITMAP_IS_SET(f))
+			{
+				CLEAR_REMAINING_N_PTRS();
+				PROTOBUF_C_UNPACK_ERROR("message '%s': missing required field '%s'",
+							desc->name, field->name);
+				goto error_cleanup;
+			}
+		}
+	}
+#undef CLEAR_REMAINING_N_PTRS
+
+	/* allocate space for unknown fields */
+	if (n_unknown) {
+		rv->unknown_fields = do_alloc(allocator,
+					      n_unknown * sizeof(ProtobufCMessageUnknownField));
+		if (rv->unknown_fields == NULL)
+			goto error_cleanup;
+	}
+
+	/* do real parsing */
+	for (i_slab = 0; i_slab <= which_slab; i_slab++) {
+		unsigned max = (i_slab == which_slab) ?
+			in_slab_index : (1UL << (i_slab + 4));
+		ScannedMember *slab = scanned_member_slabs[i_slab];
+
+		for (j = 0; j < max; j++) {
+			if (!parse_member(slab + j, rv, allocator)) {
+				PROTOBUF_C_UNPACK_ERROR("error parsing member %s of %s",
+							slab->field ? slab->field->name : "*unknown-field*",
+					desc->name);
+				goto error_cleanup;
+			}
+		}
+	}
+
+	/* cleanup */
+	for (j = 1; j <= which_slab; j++)
+		do_free(allocator, scanned_member_slabs[j]);
+	if (required_fields_bitmap_alloced)
+		do_free(allocator, required_fields_bitmap);
+	return rv;
+
+error_cleanup:
+	protobuf_c_message_free_unpacked(rv, allocator);
+	for (j = 1; j <= which_slab; j++)
+		do_free(allocator, scanned_member_slabs[j]);
+	if (required_fields_bitmap_alloced)
+		do_free(allocator, required_fields_bitmap);
+	return NULL;
+
+error_cleanup_during_scan:
+	do_free(allocator, rv);
+	for (j = 1; j <= which_slab; j++)
+		do_free(allocator, scanned_member_slabs[j]);
+	if (required_fields_bitmap_alloced)
+		do_free(allocator, required_fields_bitmap);
+	return NULL;
+}
+
+void
+protobuf_c_message_free_unpacked(ProtobufCMessage *message,
+				 ProtobufCAllocator *allocator)
+{
+	const ProtobufCMessageDescriptor *desc;
+	unsigned f;
+
+	if (message == NULL)
+		return;
+
+	desc = message->descriptor;
+
+	ASSERT_IS_MESSAGE(message);
+
+	if (allocator == NULL)
+		allocator = &protobuf_c__allocator;
+	message->descriptor = NULL;
+	for (f = 0; f < desc->n_fields; f++) {
+		if (0 != (desc->fields[f].flags & PROTOBUF_C_FIELD_FLAG_ONEOF) &&
+		    desc->fields[f].id !=
+		    STRUCT_MEMBER(uint32_t, message, desc->fields[f].quantifier_offset))
+		{
+			/* This is not the selected oneof, skip it */
+			continue;
+		}
+
+		if (desc->fields[f].label == PROTOBUF_C_LABEL_REPEATED) {
+			size_t n = STRUCT_MEMBER(size_t,
+						 message,
+						 desc->fields[f].quantifier_offset);
+			void *arr = STRUCT_MEMBER(void *,
+						  message,
+						  desc->fields[f].offset);
+
+			if (arr != NULL) {
+				if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) {
+					unsigned i;
+					for (i = 0; i < n; i++)
+						do_free(allocator, ((char **) arr)[i]);
+				} else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) {
+					unsigned i;
+					for (i = 0; i < n; i++)
+						do_free(allocator, ((ProtobufCBinaryData *) arr)[i].data);
+				} else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) {
+					unsigned i;
+					for (i = 0; i < n; i++)
+						protobuf_c_message_free_unpacked(
+							((ProtobufCMessage **) arr)[i],
+							allocator
+						);
+				}
+				do_free(allocator, arr);
+			}
+		} else if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) {
+			char *str = STRUCT_MEMBER(char *, message,
+						  desc->fields[f].offset);
+
+			if (str && str != desc->fields[f].default_value)
+				do_free(allocator, str);
+		} else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) {
+			void *data = STRUCT_MEMBER(ProtobufCBinaryData, message,
+						   desc->fields[f].offset).data;
+			const ProtobufCBinaryData *default_bd;
+
+			default_bd = desc->fields[f].default_value;
+			if (data != NULL &&
+			    (default_bd == NULL ||
+			     default_bd->data != data))
+			{
+				do_free(allocator, data);
+			}
+		} else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) {
+			ProtobufCMessage *sm;
+
+			sm = STRUCT_MEMBER(ProtobufCMessage *, message,
+					   desc->fields[f].offset);
+			if (sm && sm != desc->fields[f].default_value)
+				protobuf_c_message_free_unpacked(sm, allocator);
+		}
+	}
+
+	for (f = 0; f < message->n_unknown_fields; f++)
+		do_free(allocator, message->unknown_fields[f].data);
+	if (message->unknown_fields != NULL)
+		do_free(allocator, message->unknown_fields);
+
+	do_free(allocator, message);
+}
+
+void
+protobuf_c_message_init(const ProtobufCMessageDescriptor * descriptor,
+			void *message)
+{
+	descriptor->message_init((ProtobufCMessage *) (message));
+}
+
+protobuf_c_boolean
+protobuf_c_message_check(const ProtobufCMessage *message)
+{
+	unsigned i;
+
+	if (!message ||
+	    !message->descriptor ||
+	    message->descriptor->magic != PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC)
+	{
+		return FALSE;
+	}
+
+	for (i = 0; i < message->descriptor->n_fields; i++) {
+		const ProtobufCFieldDescriptor *f = message->descriptor->fields + i;
+		ProtobufCType type = f->type;
+		ProtobufCLabel label = f->label;
+		void *field = STRUCT_MEMBER_P (message, f->offset);
+
+		if (f->flags & PROTOBUF_C_FIELD_FLAG_ONEOF) {
+			const uint32_t *oneof_case = STRUCT_MEMBER_P (message, f->quantifier_offset);
+			if (f->id != *oneof_case) {
+				continue; //Do not check if it is an unpopulated oneof member.
+			}
+		}
+
+		if (label == PROTOBUF_C_LABEL_REPEATED) {
+			size_t *quantity = STRUCT_MEMBER_P (message, f->quantifier_offset);
+
+			if (*quantity > 0 && *(void **) field == NULL) {
+				return FALSE;
+			}
+
+			if (type == PROTOBUF_C_TYPE_MESSAGE) {
+				ProtobufCMessage **submessage = *(ProtobufCMessage ***) field;
+				unsigned j;
+				for (j = 0; j < *quantity; j++) {
+					if (!protobuf_c_message_check(submessage[j]))
+						return FALSE;
+				}
+			} else if (type == PROTOBUF_C_TYPE_STRING) {
+				char **string = *(char ***) field;
+				unsigned j;
+				for (j = 0; j < *quantity; j++) {
+					if (!string[j])
+						return FALSE;
+				}
+			} else if (type == PROTOBUF_C_TYPE_BYTES) {
+				ProtobufCBinaryData *bd = *(ProtobufCBinaryData **) field;
+				unsigned j;
+				for (j = 0; j < *quantity; j++) {
+					if (bd[j].len > 0 && bd[j].data == NULL)
+						return FALSE;
+				}
+			}
+
+		} else { /* PROTOBUF_C_LABEL_REQUIRED or PROTOBUF_C_LABEL_OPTIONAL */
+
+			if (type == PROTOBUF_C_TYPE_MESSAGE) {
+				ProtobufCMessage *submessage = *(ProtobufCMessage **) field;
+				if (label == PROTOBUF_C_LABEL_REQUIRED || submessage != NULL) {
+					if (!protobuf_c_message_check(submessage))
+						return FALSE;
+				}
+			} else if (type == PROTOBUF_C_TYPE_STRING) {
+				char *string = *(char **) field;
+				if (label == PROTOBUF_C_LABEL_REQUIRED && string == NULL)
+					return FALSE;
+			} else if (type == PROTOBUF_C_TYPE_BYTES) {
+				protobuf_c_boolean *has = STRUCT_MEMBER_P (message, f->quantifier_offset);
+				ProtobufCBinaryData *bd = field;
+				if (label == PROTOBUF_C_LABEL_REQUIRED || *has == TRUE) {
+					if (bd->len > 0 && bd->data == NULL)
+						return FALSE;
+				}
+			}
+		}
+	}
+
+	return TRUE;
+}
+
+/* === services === */
+
+typedef void (*GenericHandler) (void *service,
+				const ProtobufCMessage *input,
+				ProtobufCClosure closure,
+				void *closure_data);
+void
+protobuf_c_service_invoke_internal(ProtobufCService *service,
+				   unsigned method_index,
+				   const ProtobufCMessage *input,
+				   ProtobufCClosure closure,
+				   void *closure_data)
+{
+	GenericHandler *handlers;
+	GenericHandler handler;
+
+	/*
+	 * Verify that method_index is within range. If this fails, you are
+	 * likely invoking a newly added method on an old service. (Although
+	 * other memory corruption bugs can cause this assertion too.)
+	 */
+	assert(method_index < service->descriptor->n_methods);
+
+	/*
+	 * Get the array of virtual methods (which are enumerated by the
+	 * generated code).
+	 */
+	handlers = (GenericHandler *) (service + 1);
+
+	/*
+	 * Get our method and invoke it.
+	 * \todo Seems like handler == NULL is a situation that needs handling.
+	 */
+	handler = handlers[method_index];
+	(*handler)(service, input, closure, closure_data);
+}
+
+void
+protobuf_c_service_generated_init(ProtobufCService *service,
+				  const ProtobufCServiceDescriptor *descriptor,
+				  ProtobufCServiceDestroy destroy)
+{
+	ASSERT_IS_SERVICE_DESCRIPTOR(descriptor);
+	service->descriptor = descriptor;
+	service->destroy = destroy;
+	service->invoke = protobuf_c_service_invoke_internal;
+	memset(&service[1], 0, descriptor->n_methods * sizeof(GenericHandler));
+}
+
+void protobuf_c_service_destroy(ProtobufCService *service)
+{
+	service->destroy(service);
+}
+
+/* --- querying the descriptors --- */
+
+const ProtobufCEnumValue *
+protobuf_c_enum_descriptor_get_value_by_name(const ProtobufCEnumDescriptor *desc,
+					     const char *name)
+{
+	unsigned start = 0;
+	unsigned count;
+
+	if (desc == NULL || desc->values_by_name == NULL)
+		return NULL;
+
+	count = desc->n_value_names;
+
+	while (count > 1) {
+		unsigned mid = start + count / 2;
+		int rv = strcmp(desc->values_by_name[mid].name, name);
+		if (rv == 0)
+			return desc->values + desc->values_by_name[mid].index;
+		else if (rv < 0) {
+			count = start + count - (mid + 1);
+			start = mid + 1;
+		} else
+			count = mid - start;
+	}
+	if (count == 0)
+		return NULL;
+	if (strcmp(desc->values_by_name[start].name, name) == 0)
+		return desc->values + desc->values_by_name[start].index;
+	return NULL;
+}
+
+const ProtobufCEnumValue *
+protobuf_c_enum_descriptor_get_value(const ProtobufCEnumDescriptor *desc,
+				     int value)
+{
+	int rv = int_range_lookup(desc->n_value_ranges, desc->value_ranges, value);
+	if (rv < 0)
+		return NULL;
+	return desc->values + rv;
+}
+
+const ProtobufCFieldDescriptor *
+protobuf_c_message_descriptor_get_field_by_name(const ProtobufCMessageDescriptor *desc,
+						const char *name)
+{
+	unsigned start = 0;
+	unsigned count;
+	const ProtobufCFieldDescriptor *field;
+
+	if (desc == NULL || desc->fields_sorted_by_name == NULL)
+		return NULL;
+
+	count = desc->n_fields;
+
+	while (count > 1) {
+		unsigned mid = start + count / 2;
+		int rv;
+		field = desc->fields + desc->fields_sorted_by_name[mid];
+		rv = strcmp(field->name, name);
+		if (rv == 0)
+			return field;
+		else if (rv < 0) {
+			count = start + count - (mid + 1);
+			start = mid + 1;
+		} else
+			count = mid - start;
+	}
+	if (count == 0)
+		return NULL;
+	field = desc->fields + desc->fields_sorted_by_name[start];
+	if (strcmp(field->name, name) == 0)
+		return field;
+	return NULL;
+}
+
+const ProtobufCFieldDescriptor *
+protobuf_c_message_descriptor_get_field(const ProtobufCMessageDescriptor *desc,
+					unsigned value)
+{
+	int rv = int_range_lookup(desc->n_field_ranges,desc->field_ranges, value);
+	if (rv < 0)
+		return NULL;
+	return desc->fields + rv;
+}
+
+const ProtobufCMethodDescriptor *
+protobuf_c_service_descriptor_get_method_by_name(const ProtobufCServiceDescriptor *desc,
+						 const char *name)
+{
+	unsigned start = 0;
+	unsigned count;
+
+	if (desc == NULL || desc->method_indices_by_name == NULL)
+		return NULL;
+
+	count = desc->n_methods;
+
+	while (count > 1) {
+		unsigned mid = start + count / 2;
+		unsigned mid_index = desc->method_indices_by_name[mid];
+		const char *mid_name = desc->methods[mid_index].name;
+		int rv = strcmp(mid_name, name);
+
+		if (rv == 0)
+			return desc->methods + desc->method_indices_by_name[mid];
+		if (rv < 0) {
+			count = start + count - (mid + 1);
+			start = mid + 1;
+		} else {
+			count = mid - start;
+		}
+	}
+	if (count == 0)
+		return NULL;
+	if (strcmp(desc->methods[desc->method_indices_by_name[start]].name, name) == 0)
+		return desc->methods + desc->method_indices_by_name[start];
+	return NULL;
+}
diff --git a/lib/util/Makefile.in b/lib/util/Makefile.in
new file mode 100644
index 0000000..7898eec
--- /dev/null
+++ b/lib/util/Makefile.in
@@ -0,0 +1,1709 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2011-2023 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+devdir = @devdir@
+scriptdir = $(top_srcdir)/scripts
+incdir = $(top_srcdir)/include
+cross_compiling = @CROSS_COMPILING@
+
+# Where to install things...
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+bindir = @bindir@
+sbindir = @sbindir@
+sysconfdir = @sysconfdir@
+libexecdir = @libexecdir@
+datarootdir = @datarootdir@
+localstatedir = @localstatedir@
+
+# File extension, mode and map file to use for shared libraries/objects
+shlib_enable = @SHLIB_ENABLE@
+shlib_mode = @SHLIB_MODE@
+shlib_exp = ./util.exp
+shlib_map = util.map
+shlib_opt = util.opt
+
+# Compiler & tools to use
+CC = @CC@
+HOSTCC = @CC_FOR_BUILD@
+CPP = @CPP@
+HOSTCPP = @CPP_FOR_BUILD@
+LIBTOOL = @LIBTOOL@
+SHA1SUM = @SHA1SUM@
+EGREP = @EGREP@
+SED = @SED@
+AWK = @AWK@
+
+# Our install program supports extra flags...
+INSTALL = $(SHELL) $(scriptdir)/install-sh -c
+INSTALL_OWNER = -o $(install_uid) -g $(install_gid)
+INSTALL_BACKUP = @INSTALL_BACKUP@
+
+# C preprocessor defines
+CPPDEFS = -D_PATH_SUDO_CONF=\"$(sysconfdir)/sudo.conf\"
+
+# C preprocessor flags
+CPPFLAGS = -I$(incdir) -I$(top_builddir) -I. -I$(srcdir) $(CPPDEFS) \
+	    @CPPFLAGS@ -DDEFAULT_TEXT_DOMAIN=\"@PACKAGE_NAME@\"
+HOSTCPPFLAGS = -I$(incdir) -I$(top_builddir) -I. -I$(srcdir) $(CPPDEFS) \
+	       @CPPFLAGS_FOR_BUILD@ -DDEFAULT_TEXT_DOMAIN=\"@PACKAGE_NAME@\"
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+HOSTCFLAGS = @CFLAGS_FOR_BUILD@
+
+# Flags to pass to the link stage
+LDFLAGS = @LDFLAGS@
+LT_LDFLAGS = @LIBUTIL_LDFLAGS@ @LT_LDFLAGS@ @LT_LDEXPORTS@
+
+# Flags to pass to libtool
+LTFLAGS = @LT_STATIC@
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# Libtool style shared library version
+SHLIB_VERSION = 0:0:0
+
+# cppcheck options, usually set in the top-level Makefile
+CPPCHECK_OPTS = -q --enable=warning,performance,portability --suppress=constStatement --suppress=compareBoolExpressionWithInt --error-exitcode=1 --inline-suppr -Dva_copy=va_copy -U__cplusplus -UQUAD_MAX -UQUAD_MIN -UUQUAD_MAX -U_POSIX_HOST_NAME_MAX -U_POSIX_PATH_MAX -U__NBBY -DNSIG=64
+
+# splint options, usually set in the top-level Makefile
+SPLINT_OPTS = -D__restrict= -checks
+
+# PVS-studio options
+PVS_CFG = $(top_srcdir)/PVS-Studio.cfg
+PVS_IGNORE = 'V707,V011,V002,V536'
+PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
+
+# Regression tests
+TEST_PROGS = conf_test getgids getgrouplist_test hexchar_test hltq_test \
+	     json_test multiarch_test open_parent_dir_test parse_gids_test \
+	     parseln_test progname_test regex_test strsplit_test \
+	     strtobool_test strtoid_test strtomode_test strtonum_test \
+	     uuid_test @COMPAT_TEST_PROGS@
+
+TEST_LIBS = @LIBS@
+TEST_LDFLAGS = @LDFLAGS@
+TEST_VERBOSE =
+HARNESS = $(SHELL) regress/harness $(TEST_VERBOSE)
+
+# Fuzzers
+LIBFUZZSTUB = $(top_builddir)/lib/fuzzstub/libsudo_fuzzstub.la
+LIB_FUZZING_ENGINE = @FUZZ_ENGINE@
+FUZZ_PROGS = fuzz_sudo_conf
+FUZZ_SEED_CORPUS = ${FUZZ_PROGS:=_seed_corpus.zip}
+FUZZ_LIBS = $(LIB_FUZZING_ENGINE) @LIBS@
+FUZZ_LDFLAGS = @LDFLAGS@
+FUZZ_MAX_LEN = 4096
+FUZZ_RUNS = 8192
+FUZZ_VERBOSE =
+
+# User and group ids the installed files should be "owned" by
+install_uid = 0
+install_gid = 0
+
+# Set to non-empty for development mode
+DEVEL = @DEVEL@
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+LTOBJS = basename.lo @DIGEST@ event.lo fatal.lo key_val.lo gethostname.lo \
+	 gettime.lo getgrouplist.lo gidlist.lo hexchar.lo json.lo lbuf.lo \
+	 locking.lo logfac.lo logpri.lo mkdir_parents.lo mmap_alloc.lo \
+	 multiarch.lo parseln.lo progname.lo rcstr.lo regex.lo roundup.lo \
+	 secure_path.lo setgroups.lo strsplit.lo strtobool.lo strtoid.lo \
+	 strtomode.lo strtonum.lo sudo_conf.lo sudo_debug.lo sudo_dso.lo \
+	 term.lo ttyname_dev.lo ttysize.lo uuid.lo \
+	 @COMMON_OBJS@ @LTLIBOBJS@
+
+IOBJS = $(LTOBJS:.lo=.i)
+
+POBJS = $(IOBJS:.i=.plog)
+
+MKTEMP_TEST_OBJS = mktemp_test.lo mktemp.lo
+
+PARSELN_TEST_OBJS = parseln_test.lo parseln.lo
+
+PROGNAME_TEST_OBJS = progname_test.lo progname.lo basename.lo
+
+CLOSEFROM_TEST_OBJS = closefrom_test.lo closefrom.lo
+
+CONF_TEST_OBJS = conf_test.lo sudo_conf.lo
+
+FNM_TEST_OBJS = fnm_test.lo fnmatch.lo
+
+GLOBTEST_OBJS = globtest.lo glob.lo
+
+GETDELIM_TEST_OBJS = getdelim_test.lo getdelim.lo
+
+HLTQ_TEST_OBJS = hltq_test.lo
+
+HEXCHAR_TEST_OBJS = hexchar_test.lo hexchar.lo
+
+JSON_TEST_OBJS = json_test.lo json.lo
+
+MULTIARCH_TEST_OBJS = multiarch_test.lo multiarch.lo
+
+OPEN_PARENT_DIR_TEST_OBJS = open_parent_dir_test.lo mkdir_parents.lo
+
+REGEX_TEST_OBJS = regex_test.lo regex.lo
+
+STRTOBOOL_TEST_OBJS = strtobool_test.lo strtobool.lo
+
+STRTOMODE_TEST_OBJS = strtomode_test.lo strtomode.lo
+
+STRTOID_TEST_OBJS = strtoid_test.lo strtoid.lo strtonum.lo
+
+STRTONUM_TEST_OBJS = strtonum_test.lo strtonum.lo
+
+STRSPLIT_TEST_OBJS = strsplit_test.lo strsplit.lo
+
+PARSE_GIDS_TEST_OBJS = parse_gids_test.lo gidlist.lo
+
+GETGIDS_OBJS = getgids.lo getgrouplist.lo
+
+GETGROUPLIST_TEST_OBJS = getgrouplist_test.lo getgrouplist.lo
+
+STRSIG_TEST_OBJS = strsig_test.lo sig2str.lo str2sig.lo @SIGNAME@
+
+UUID_TEST_OBJS = uuid_test.lo uuid.lo
+
+FUZZ_SUDO_CONF_OBJS = fuzz_sudo_conf.lo
+
+FUZZ_SUDO_CONF_CORPUS = $(srcdir)/regress/corpus/seed/sudo_conf/sudo.conf.*
+
+all: libsudo_util.la
+
+depend: siglist.c signame.c
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/util/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/util/Makefile
+
+harness: $(srcdir)/regress/harness.in
+	cd $(top_builddir) && ./config.status --file lib/util/regress/harness
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/util/Makefile
+
+.SUFFIXES: .c .h .i .lo .plog
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+.c.i:
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+
+.i.plog:
+	ifile=$<; rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $${ifile%i}c --i-file $< --output-file $@
+
+$(shlib_map): $(shlib_exp)
+	@$(AWK) 'BEGIN { print "{\n\tglobal:" } { print "\t\t"$$0";" } END { print "\tlocal:\n\t\t*;\n};" }' $(shlib_exp) > $@
+
+$(shlib_opt): $(shlib_exp)
+	@$(SED) 's/^/+e /' $(shlib_exp) > $@
+
+libsudo_util.la: $(LTOBJS) @LT_LDDEP@
+	case "$(LT_LDFLAGS)" in \
+	*-no-install*) \
+	    $(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LDFLAGS) $(LT_LDFLAGS) $(LTOBJS) @LT_DEP_LIBS@ @LIBINTL@ @LIBMD@ @LIBCRYPTO@ @LIBPTHREAD@ @LIBDL@ @LIBRT@ @NET_LIBS@;; \
+	*) \
+	    $(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LDFLAGS) $(ASAN_LDFLAGS) $(HARDENING_LDFLAGS) $(LT_LDFLAGS) $(LTOBJS) -version-info $(SHLIB_VERSION) -rpath $(libexecdir)/sudo @LT_DEP_LIBS@ @LIBINTL@ @LIBMD@ @LIBCRYPTO@ @LIBPTHREAD@ @LIBDL@ @LIBRT@ @NET_LIBS@;; \
+	esac
+
+siglist.c: mksiglist
+	./mksiglist > $@
+
+signame.c: mksigname
+	./mksigname > $@
+
+mksiglist: $(srcdir)/mksiglist.c mksiglist.h $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(HOSTCC) $(HOSTCPPFLAGS) $(HOSTCFLAGS) $(srcdir)/mksiglist.c -o $@
+
+mksigname: $(srcdir)/mksigname.c mksigname.h $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(HOSTCC) $(HOSTCPPFLAGS) $(HOSTCFLAGS) $(srcdir)/mksigname.c -o $@
+
+$(srcdir)/sys_siglist.h: $(srcdir)/siglist.in
+	@if [ -n "$(DEVEL)" ]; then \
+	    $(AWK) 'BEGIN {print "/* public domain */\n\n#include <config.h>\n#include <sys/types.h>\n#include <signal.h>\n#include \"sudo_compat.h\"\n\nint sudo_end_of_headers;\nstatic char *sudo_sys_siglist[NSIG];\n"} /^    [A-Z]/ {printf("#ifdef SIG%s\n    if (sudo_sys_siglist[SIG%s] == NULL)\n\tsudo_sys_siglist[SIG%s] = \"%s\";\n#endif\n", $$1, $$1, $$1, substr($$0, 13))}' < $(srcdir)/siglist.in > $@; \
+	fi
+
+$(srcdir)/sys_signame.h: $(srcdir)/siglist.in
+	@if [ -n "$(DEVEL)" ]; then \
+	    $(AWK) 'BEGIN {print "/* public domain */\n\n#include <config.h>\n#include <sys/types.h>\n#include <signal.h>\n#include \"sudo_compat.h\"\n\nint sudo_end_of_headers;\nstatic char *sudo_sys_signame[NSIG];\n"} /^    [A-Z]/ {printf("#ifdef SIG%s\n    if (sudo_sys_signame[SIG%s] == NULL)\n\tsudo_sys_signame[SIG%s] = \"%s\";\n#endif\n", $$1, $$1, $$1, $$1)}' < $(srcdir)/siglist.in > $@; \
+	fi
+
+mksiglist.h: $(srcdir)/sys_siglist.h
+	$(CPP) $(CPPFLAGS) $(srcdir)/sys_siglist.h | $(SED) -e '1,/^int sudo_end_of_headers;/d' -e '/^#/d' > mksiglist.h
+
+mksigname.h: $(srcdir)/sys_signame.h
+	$(CPP) $(CPPFLAGS) $(srcdir)/sys_signame.h | $(SED) -e '1,/^int sudo_end_of_headers;/d' -e '/^#/d' > mksigname.h
+
+closefrom_test: $(CLOSEFROM_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CLOSEFROM_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+conf_test: $(CONF_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CONF_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+fnm_test: $(FNM_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(FNM_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+globtest: $(GLOBTEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(GLOBTEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+getdelim_test: $(GETDELIM_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(GETDELIM_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+hltq_test: $(HLTQ_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(HLTQ_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+hexchar_test: $(HEXCHAR_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(HEXCHAR_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+json_test: $(JSON_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(JSON_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+mktemp_test: $(MKTEMP_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(MKTEMP_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+multiarch_test: $(MULTIARCH_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(MULTIARCH_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+open_parent_dir_test: $(OPEN_PARENT_DIR_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(OPEN_PARENT_DIR_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+parseln_test: $(PARSELN_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(PARSELN_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+progname_test: $(PROGNAME_TEST_OBJS)
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(PROGNAME_TEST_OBJS) $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+parse_gids_test: $(PARSE_GIDS_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(PARSE_GIDS_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+getgids: $(GETGIDS_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(GETGIDS_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+getgrouplist_test: $(GETGROUPLIST_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(GETGROUPLIST_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+strsplit_test: $(STRSPLIT_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRSPLIT_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+regex_test: $(REGEX_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(REGEX_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+strsig_test: $(STRSIG_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRSIG_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+strtobool_test: $(STRTOBOOL_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRTOBOOL_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+strtomode_test: $(STRTOMODE_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRTOMODE_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+strtonum_test: $(STRTONUM_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRTONUM_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+strtoid_test: $(STRTOID_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRTOID_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+uuid_test: $(UUID_TEST_OBJS) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(UUID_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
+fuzz_sudo_conf: $(FUZZ_SUDO_CONF_OBJS) $(LIBFUZZSTUB) libsudo_util.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(FUZZ_SUDO_CONF_OBJS) $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(HARDENING_LDFLAGS) $(FUZZ_LDFLAGS) $(FUZZ_LIBS) libsudo_util.la
+
+fuzz_sudo_conf_seed_corpus.zip:
+	tdir=fuzz_sudo_conf.$$$$; \
+	mkdir $$tdir; \
+	for f in $(FUZZ_SUDO_CONF_CORPUS); do \
+	    cp $$f $$tdir/`$(SHA1SUM) $$f | $(SED) -e 's/^.*= *//' -e 's/ .*//'`; \
+	done; \
+	zip -j $@ $$tdir/*; \
+	rm -rf $$tdir
+
+run-fuzz_sudo_conf: fuzz_sudo_conf
+	l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	test -n "$$l" || l="C"; \
+	LC_ALL="$$l"; export LC_ALL; \
+	unset LANG || LANG=; \
+	unset LANGUAGE || LANGUAGE=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/sudo_conf; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_SUDO_CONF_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_sudo_conf -dict=$(srcdir)/regress/fuzz/fuzz_sudo_conf.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $(FUZZ_VERBOSE) $$corpus
+
+pre-install:
+
+install: install-dirs
+	case "$(LT_LDFLAGS)" in \
+	*-no-install*) ;; \
+	*)  if [ X"$(shlib_enable)" = X"yes" ]; then \
+		INSTALL_BACKUP='$(INSTALL_BACKUP)' $(LIBTOOL) $(LTFLAGS) --quiet --mode=install $(INSTALL) $(INSTALL_OWNER) libsudo_util.la $(DESTDIR)$(libexecdir)/sudo; \
+	    fi;; \
+	esac
+
+install-dirs:
+	$(SHELL) $(scriptdir)/mkinstalldirs $(DESTDIR)$(libexecdir)/sudo
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer: $(FUZZ_PROGS) $(FUZZ_SEED_CORPUS)
+	@if test X"$(FUZZ_DESTDIR)" = X""; then \
+	    echo "must set FUZZ_DESTDIR for install-fuzzer target"; \
+	else \
+	    cp $(FUZZ_PROGS) $(FUZZ_SEED_CORPUS) $(FUZZ_DESTDIR); \
+	    cp $(srcdir)/regress/fuzz/*.dict $(FUZZ_DESTDIR); \
+	fi
+
+uninstall:
+	$(LIBTOOL) $(LTFLAGS) --mode=uninstall rm -f $(DESTDIR)$(libexecdir)/sudo/libsudo_util.la
+	-test -z "$(INSTALL_BACKUP)" || \
+	    rf -f $(DESTDIR)$(libexecdir)/sudo/libsudo_util.*~
+
+splint:
+	splint $(SPLINT_OPTS) -I$(incdir) -I$(top_builddir) $(srcdir)/*.c
+
+cppcheck:
+	cppcheck $(CPPCHECK_OPTS) -I$(incdir) -I$(top_builddir) $(srcdir)/*.c
+
+pvs-log-files: $(POBJS)
+
+pvs-studio: $(POBJS)
+	plog-converter $(PVS_LOG_OPTS) $(POBJS)
+
+fuzz: run-fuzz_sudo_conf
+
+check-fuzzer: $(FUZZ_PROGS)
+	@if test X"$(cross_compiling)" != X"yes"; then \
+	    l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	    test -n "$$l" || l="C"; \
+	    LC_ALL="$$l"; export LC_ALL; \
+	    unset LANG || LANG=; \
+	    unset LANGUAGE || LANGUAGE=; \
+	    MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	    MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	    echo "fuzz_sudo_conf: verifying corpus"; \
+	    ./fuzz_sudo_conf $(FUZZ_VERBOSE) $(FUZZ_SUDO_CONF_CORPUS); \
+	fi
+
+# Note: some regress checks are run from srcdir for consistent error messages
+check: $(TEST_PROGS) check-fuzzer
+	@if test X"$(cross_compiling)" != X"yes"; then \
+	    l=`locale -a 2>&1 | $(EGREP) -i '^C\.UTF-?8$$' | $(SED) 1q` || true; \
+	    test -n "$$l" || l="C"; \
+	    LC_ALL="$$l"; export LC_ALL; \
+	    unset LANG || LANG=; \
+	    unset LANGUAGE || LANGUAGE=; \
+	    MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	    MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	    rval=0; \
+	    if test -f closefrom_test; then \
+		./closefrom_test || rval=`expr $$rval + $$?`; \
+	    fi; \
+	    if test -f fnm_test; then \
+		./fnm_test $(srcdir)/regress/fnmatch/fnm_test.in || rval=`expr $$rval + $$?`; \
+	    fi; \
+	    if test -f globtest; then \
+		mkdir -p `$(SED) 's@/[^/]*$$@@' $(srcdir)/regress/glob/files | sort -u`; \
+		touch `cat $(srcdir)/regress/glob/files`; \
+		chmod 0755 `$(EGREP) '/r[^/]*$$' $(srcdir)/regress/glob/files`; \
+		chmod 0444 `$(EGREP) '/s[^/]*$$' $(srcdir)/regress/glob/files`; \
+		chmod 0711 `$(EGREP) '/t[^/]*$$' $(srcdir)/regress/glob/files`; \
+		./globtest $(srcdir)/regress/glob/globtest.in || rval=`expr $$rval + $$?`; \
+		rm -rf fake; \
+	    fi; \
+	    if test -f getdelim_test; then \
+		./getdelim_test || rval=`expr $$rval + $$?`; \
+	    fi; \
+	    if test -f mktemp_test; then \
+		./mktemp_test || rval=`expr $$rval + $$?`; \
+	    fi; \
+	    if test -f strsig_test; then \
+		./strsig_test || rval=`expr $$rval + $$?`; \
+	    fi; \
+	    ./getgrouplist_test || rval=`expr $$rval + $$?`; \
+	    ./multiarch_test || rval=`expr $$rval + $$?`; \
+	    ./open_parent_dir_test || rval=`expr $$rval + $$?`; \
+	    ./parse_gids_test || rval=`expr $$rval + $$?`; \
+	    ./regex_test || rval=`expr $$rval + $$?`; \
+	    ./strsplit_test || rval=`expr $$rval + $$?`; \
+	    ./strtobool_test || rval=`expr $$rval + $$?`; \
+	    ./strtoid_test || rval=`expr $$rval + $$?`; \
+	    ./strtomode_test || rval=`expr $$rval + $$?`; \
+	    ./strtonum_test || rval=`expr $$rval + $$?`; \
+	    ./uuid_test || rval=`expr $$rval + $$?`; \
+	    ./hltq_test || rval=`expr $$rval + $$?`; \
+	    ./hexchar_test || rval=`expr $$rval + $$?`; \
+	    ./json_test || rval=`expr $$rval + $$?`; \
+	    ./progname_test || rval=`expr $$rval + $$?`; \
+	    rm -f ./progname_test2; ln -s ./progname_test ./progname_test2; \
+	    ./progname_test2 || rval=`expr $$rval + $$?`; \
+	    rm -f ./progname_test2; \
+	    AWK=$(AWK) $(HARNESS) sudo_conf || rval=`expr $$rval + $$?`; \
+	    AWK=$(AWK) $(HARNESS) sudo_parseln || rval=`expr $$rval + $$?`; \
+	    exit $$rval; \
+	fi
+
+check-verbose:
+	exec $(MAKE) $(MFLAGS) TEST_VERBOSE=-v FUZZ_VERBOSE=-verbosity=1 check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f $(TEST_PROGS) $(FUZZ_PROGS) \
+	    *.lo *.o *.la
+	-rm -f *.i *.plog stamp-* core *.core core.* regress/*/*.out \
+	    regress/*/*.err
+	-rm -rf regress/corpus/sudo_conf
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile mksiglist mksiglist.h siglist.c \
+	    mksigname mksigname.h signame.c regress/harness \
+	    .libs $(shlib_exp) $(shlib_map) $(shlib_opt)
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean \
+	harness $(FUZZ_SEED_CORPUS) run-fuzz_sudo_conf
+
+# Autogenerated dependencies, do not modify
+aix.lo: $(srcdir)/aix.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+        $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+        $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+        $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/aix.c
+aix.i: $(srcdir)/aix.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+        $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+        $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+        $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+aix.plog: aix.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/aix.c --i-file $< --output-file $@
+arc4random.lo: $(srcdir)/arc4random.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_rand.h \
+               $(srcdir)/chacha_private.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/arc4random.c
+arc4random.i: $(srcdir)/arc4random.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_rand.h \
+               $(srcdir)/chacha_private.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+arc4random.plog: arc4random.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/arc4random.c --i-file $< --output-file $@
+arc4random_buf.lo: $(srcdir)/arc4random_buf.c $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_rand.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/arc4random_buf.c
+arc4random_buf.i: $(srcdir)/arc4random_buf.c $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_rand.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+arc4random_buf.plog: arc4random_buf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/arc4random_buf.c --i-file $< --output-file $@
+arc4random_uniform.lo: $(srcdir)/arc4random_uniform.c $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_rand.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/arc4random_uniform.c
+arc4random_uniform.i: $(srcdir)/arc4random_uniform.c $(incdir)/sudo_compat.h \
+                       $(incdir)/sudo_rand.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+arc4random_uniform.plog: arc4random_uniform.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/arc4random_uniform.c --i-file $< --output-file $@
+basename.lo: $(srcdir)/basename.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/basename.c
+basename.i: $(srcdir)/basename.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+basename.plog: basename.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/basename.c --i-file $< --output-file $@
+cfmakeraw.lo: $(srcdir)/cfmakeraw.c $(incdir)/sudo_compat.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/cfmakeraw.c
+cfmakeraw.i: $(srcdir)/cfmakeraw.c $(incdir)/sudo_compat.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+cfmakeraw.plog: cfmakeraw.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/cfmakeraw.c --i-file $< --output-file $@
+closefrom.lo: $(srcdir)/closefrom.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/closefrom.c
+closefrom.i: $(srcdir)/closefrom.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+closefrom.plog: closefrom.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/closefrom.c --i-file $< --output-file $@
+closefrom_test.lo: $(srcdir)/regress/closefrom/closefrom_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/closefrom/closefrom_test.c
+closefrom_test.i: $(srcdir)/regress/closefrom/closefrom_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+closefrom_test.plog: closefrom_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/closefrom/closefrom_test.c --i-file $< --output-file $@
+conf_test.lo: $(srcdir)/regress/sudo_conf/conf_test.c \
+              $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+              $(incdir)/sudo_conf.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/sudo_conf/conf_test.c
+conf_test.i: $(srcdir)/regress/sudo_conf/conf_test.c \
+              $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+              $(incdir)/sudo_conf.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+conf_test.plog: conf_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/sudo_conf/conf_test.c --i-file $< --output-file $@
+digest.lo: $(srcdir)/digest.c $(incdir)/compat/sha2.h \
+           $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+           $(incdir)/sudo_debug.h $(incdir)/sudo_digest.h \
+           $(incdir)/sudo_queue.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/digest.c
+digest.i: $(srcdir)/digest.c $(incdir)/compat/sha2.h \
+           $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+           $(incdir)/sudo_debug.h $(incdir)/sudo_digest.h \
+           $(incdir)/sudo_queue.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+digest.plog: digest.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/digest.c --i-file $< --output-file $@
+digest_gcrypt.lo: $(srcdir)/digest_gcrypt.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_digest.h $(incdir)/sudo_queue.h \
+                  $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/digest_gcrypt.c
+digest_gcrypt.i: $(srcdir)/digest_gcrypt.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_digest.h $(incdir)/sudo_queue.h \
+                  $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+digest_gcrypt.plog: digest_gcrypt.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/digest_gcrypt.c --i-file $< --output-file $@
+digest_openssl.lo: $(srcdir)/digest_openssl.c $(incdir)/compat/stdbool.h \
+                   $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                   $(incdir)/sudo_digest.h $(incdir)/sudo_queue.h \
+                   $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/digest_openssl.c
+digest_openssl.i: $(srcdir)/digest_openssl.c $(incdir)/compat/stdbool.h \
+                   $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                   $(incdir)/sudo_digest.h $(incdir)/sudo_queue.h \
+                   $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+digest_openssl.plog: digest_openssl.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/digest_openssl.c --i-file $< --output-file $@
+dup3.lo: $(srcdir)/dup3.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/dup3.c
+dup3.i: $(srcdir)/dup3.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+dup3.plog: dup3.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/dup3.c --i-file $< --output-file $@
+event.lo: $(srcdir)/event.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_debug.h $(incdir)/sudo_event.h $(incdir)/sudo_fatal.h \
+          $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+          $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/event.c
+event.i: $(srcdir)/event.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_debug.h $(incdir)/sudo_event.h $(incdir)/sudo_fatal.h \
+          $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+          $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+event.plog: event.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/event.c --i-file $< --output-file $@
+event_poll.lo: $(srcdir)/event_poll.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_event.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+               $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/event_poll.c
+event_poll.i: $(srcdir)/event_poll.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+               $(incdir)/sudo_event.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+               $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+event_poll.plog: event_poll.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/event_poll.c --i-file $< --output-file $@
+event_select.lo: $(srcdir)/event_select.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_event.h $(incdir)/sudo_fatal.h \
+                 $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/event_select.c
+event_select.i: $(srcdir)/event_select.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_event.h $(incdir)/sudo_fatal.h \
+                 $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+event_select.plog: event_select.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/event_select.c --i-file $< --output-file $@
+explicit_bzero.lo: $(srcdir)/explicit_bzero.c $(incdir)/sudo_compat.h \
+                   $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/explicit_bzero.c
+explicit_bzero.i: $(srcdir)/explicit_bzero.c $(incdir)/sudo_compat.h \
+                   $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+explicit_bzero.plog: explicit_bzero.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/explicit_bzero.c --i-file $< --output-file $@
+fatal.lo: $(srcdir)/fatal.c $(incdir)/compat/getaddrinfo.h \
+          $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+          $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+          $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/fatal.c
+fatal.i: $(srcdir)/fatal.c $(incdir)/compat/getaddrinfo.h \
+          $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+          $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+          $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fatal.plog: fatal.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/fatal.c --i-file $< --output-file $@
+fchmodat.lo: $(srcdir)/fchmodat.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/fchmodat.c
+fchmodat.i: $(srcdir)/fchmodat.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fchmodat.plog: fchmodat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/fchmodat.c --i-file $< --output-file $@
+fchownat.lo: $(srcdir)/fchownat.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/fchownat.c
+fchownat.i: $(srcdir)/fchownat.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fchownat.plog: fchownat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/fchownat.c --i-file $< --output-file $@
+fnm_test.lo: $(srcdir)/regress/fnmatch/fnm_test.c $(incdir)/compat/fnmatch.h \
+             $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/fnmatch/fnm_test.c
+fnm_test.i: $(srcdir)/regress/fnmatch/fnm_test.c $(incdir)/compat/fnmatch.h \
+             $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fnm_test.plog: fnm_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/fnmatch/fnm_test.c --i-file $< --output-file $@
+fnmatch.lo: $(srcdir)/fnmatch.c $(incdir)/compat/charclass.h \
+            $(incdir)/compat/fnmatch.h $(incdir)/sudo_compat.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/fnmatch.c
+fnmatch.i: $(srcdir)/fnmatch.c $(incdir)/compat/charclass.h \
+            $(incdir)/compat/fnmatch.h $(incdir)/sudo_compat.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fnmatch.plog: fnmatch.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/fnmatch.c --i-file $< --output-file $@
+freezero.lo: $(srcdir)/freezero.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/freezero.c
+freezero.i: $(srcdir)/freezero.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+freezero.plog: freezero.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/freezero.c --i-file $< --output-file $@
+fstatat.lo: $(srcdir)/fstatat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/fstatat.c
+fstatat.i: $(srcdir)/fstatat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fstatat.plog: fstatat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/fstatat.c --i-file $< --output-file $@
+fuzz_sudo_conf.lo: $(srcdir)/regress/fuzz/fuzz_sudo_conf.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_conf.h $(incdir)/sudo_debug.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                   $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/fuzz/fuzz_sudo_conf.c
+fuzz_sudo_conf.i: $(srcdir)/regress/fuzz/fuzz_sudo_conf.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_conf.h $(incdir)/sudo_debug.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                   $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+fuzz_sudo_conf.plog: fuzz_sudo_conf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/fuzz/fuzz_sudo_conf.c --i-file $< --output-file $@
+getaddrinfo.lo: $(srcdir)/getaddrinfo.c $(incdir)/compat/getaddrinfo.h \
+                $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getaddrinfo.c
+getaddrinfo.i: $(srcdir)/getaddrinfo.c $(incdir)/compat/getaddrinfo.h \
+                $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getaddrinfo.plog: getaddrinfo.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getaddrinfo.c --i-file $< --output-file $@
+getcwd.lo: $(srcdir)/getcwd.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getcwd.c
+getcwd.i: $(srcdir)/getcwd.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getcwd.plog: getcwd.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getcwd.c --i-file $< --output-file $@
+getdelim.lo: $(srcdir)/getdelim.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getdelim.c
+getdelim.i: $(srcdir)/getdelim.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getdelim.plog: getdelim.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getdelim.c --i-file $< --output-file $@
+getdelim_test.lo: $(srcdir)/regress/getdelim/getdelim_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/getdelim/getdelim_test.c
+getdelim_test.i: $(srcdir)/regress/getdelim/getdelim_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getdelim_test.plog: getdelim_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/getdelim/getdelim_test.c --i-file $< --output-file $@
+getentropy.lo: $(srcdir)/getentropy.c $(incdir)/sudo_compat.h \
+               $(incdir)/sudo_digest.h $(incdir)/sudo_rand.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getentropy.c
+getentropy.i: $(srcdir)/getentropy.c $(incdir)/sudo_compat.h \
+               $(incdir)/sudo_digest.h $(incdir)/sudo_rand.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getentropy.plog: getentropy.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getentropy.c --i-file $< --output-file $@
+getgids.lo: $(srcdir)/regress/getgrouplist/getgids.c \
+            $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+            $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/getgrouplist/getgids.c
+getgids.i: $(srcdir)/regress/getgrouplist/getgids.c \
+            $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+            $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getgids.plog: getgids.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/getgrouplist/getgids.c --i-file $< --output-file $@
+getgrouplist.lo: $(srcdir)/getgrouplist.c $(incdir)/compat/nss_dbdefs.h \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getgrouplist.c
+getgrouplist.i: $(srcdir)/getgrouplist.c $(incdir)/compat/nss_dbdefs.h \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getgrouplist.plog: getgrouplist.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getgrouplist.c --i-file $< --output-file $@
+getgrouplist_test.lo: $(srcdir)/regress/getgrouplist/getgrouplist_test.c \
+                      $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                      $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                      $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/getgrouplist/getgrouplist_test.c
+getgrouplist_test.i: $(srcdir)/regress/getgrouplist/getgrouplist_test.c \
+                      $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                      $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                      $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getgrouplist_test.plog: getgrouplist_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/getgrouplist/getgrouplist_test.c --i-file $< --output-file $@
+gethostname.lo: $(srcdir)/gethostname.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gethostname.c
+gethostname.i: $(srcdir)/gethostname.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+gethostname.plog: gethostname.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/gethostname.c --i-file $< --output-file $@
+getopt_long.lo: $(srcdir)/getopt_long.c $(incdir)/compat/getopt.h \
+                $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getopt_long.c
+getopt_long.i: $(srcdir)/getopt_long.c $(incdir)/compat/getopt.h \
+                $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getopt_long.plog: getopt_long.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getopt_long.c --i-file $< --output-file $@
+gettime.lo: $(srcdir)/gettime.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gettime.c
+gettime.i: $(srcdir)/gettime.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+gettime.plog: gettime.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/gettime.c --i-file $< --output-file $@
+getusershell.lo: $(srcdir)/getusershell.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/getusershell.c
+getusershell.i: $(srcdir)/getusershell.c $(incdir)/compat/stdbool.h \
+                 $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                 $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+getusershell.plog: getusershell.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/getusershell.c --i-file $< --output-file $@
+gidlist.lo: $(srcdir)/gidlist.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+            $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gidlist.c
+gidlist.i: $(srcdir)/gidlist.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+            $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+gidlist.plog: gidlist.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/gidlist.c --i-file $< --output-file $@
+glob.lo: $(srcdir)/glob.c $(incdir)/compat/charclass.h $(incdir)/compat/glob.h \
+         $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/glob.c
+glob.i: $(srcdir)/glob.c $(incdir)/compat/charclass.h $(incdir)/compat/glob.h \
+         $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+glob.plog: glob.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/glob.c --i-file $< --output-file $@
+globtest.lo: $(srcdir)/regress/glob/globtest.c $(incdir)/compat/glob.h \
+             $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/glob/globtest.c
+globtest.i: $(srcdir)/regress/glob/globtest.c $(incdir)/compat/glob.h \
+             $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+globtest.plog: globtest.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/glob/globtest.c --i-file $< --output-file $@
+gmtime_r.lo: $(srcdir)/gmtime_r.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gmtime_r.c
+gmtime_r.i: $(srcdir)/gmtime_r.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+gmtime_r.plog: gmtime_r.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/gmtime_r.c --i-file $< --output-file $@
+hexchar.lo: $(srcdir)/hexchar.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/hexchar.c
+hexchar.i: $(srcdir)/hexchar.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+hexchar.plog: hexchar.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/hexchar.c --i-file $< --output-file $@
+hexchar_test.lo: $(srcdir)/regress/hexchar/hexchar_test.c \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/hexchar/hexchar_test.c
+hexchar_test.i: $(srcdir)/regress/hexchar/hexchar_test.c \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+hexchar_test.plog: hexchar_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/hexchar/hexchar_test.c --i-file $< --output-file $@
+hltq_test.lo: $(srcdir)/regress/tailq/hltq_test.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/tailq/hltq_test.c
+hltq_test.i: $(srcdir)/regress/tailq/hltq_test.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+hltq_test.plog: hltq_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/tailq/hltq_test.c --i-file $< --output-file $@
+inet_pton.lo: $(srcdir)/inet_pton.c $(incdir)/sudo_compat.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/inet_pton.c
+inet_pton.i: $(srcdir)/inet_pton.c $(incdir)/sudo_compat.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+inet_pton.plog: inet_pton.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/inet_pton.c --i-file $< --output-file $@
+isblank.lo: $(srcdir)/isblank.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/isblank.c
+isblank.i: $(srcdir)/isblank.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+isblank.plog: isblank.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/isblank.c --i-file $< --output-file $@
+json.lo: $(srcdir)/json.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \
+         $(incdir)/sudo_gettext.h $(incdir)/sudo_json.h \
+         $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+         $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/json.c
+json.i: $(srcdir)/json.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \
+         $(incdir)/sudo_gettext.h $(incdir)/sudo_json.h \
+         $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+         $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+json.plog: json.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/json.c --i-file $< --output-file $@
+json_test.lo: $(srcdir)/regress/json/json_test.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/json/json_test.c
+json_test.i: $(srcdir)/regress/json/json_test.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_json.h $(incdir)/sudo_plugin.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+json_test.plog: json_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/json/json_test.c --i-file $< --output-file $@
+key_val.lo: $(srcdir)/key_val.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/key_val.c
+key_val.i: $(srcdir)/key_val.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+key_val.plog: key_val.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/key_val.c --i-file $< --output-file $@
+lbuf.lo: $(srcdir)/lbuf.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_debug.h $(incdir)/sudo_lbuf.h $(incdir)/sudo_queue.h \
+         $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/lbuf.c
+lbuf.i: $(srcdir)/lbuf.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_debug.h $(incdir)/sudo_lbuf.h $(incdir)/sudo_queue.h \
+         $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+lbuf.plog: lbuf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/lbuf.c --i-file $< --output-file $@
+localtime_r.lo: $(srcdir)/localtime_r.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/localtime_r.c
+localtime_r.i: $(srcdir)/localtime_r.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+localtime_r.plog: localtime_r.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/localtime_r.c --i-file $< --output-file $@
+locking.lo: $(srcdir)/locking.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/locking.c
+locking.i: $(srcdir)/locking.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+locking.plog: locking.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/locking.c --i-file $< --output-file $@
+logfac.lo: $(srcdir)/logfac.c $(incdir)/compat/stdbool.h \
+           $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+           $(incdir)/sudo_queue.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/logfac.c
+logfac.i: $(srcdir)/logfac.c $(incdir)/compat/stdbool.h \
+           $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+           $(incdir)/sudo_queue.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+logfac.plog: logfac.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/logfac.c --i-file $< --output-file $@
+logpri.lo: $(srcdir)/logpri.c $(incdir)/compat/stdbool.h \
+           $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+           $(incdir)/sudo_queue.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/logpri.c
+logpri.i: $(srcdir)/logpri.c $(incdir)/compat/stdbool.h \
+           $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+           $(incdir)/sudo_queue.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+logpri.plog: logpri.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/logpri.c --i-file $< --output-file $@
+memrchr.lo: $(srcdir)/memrchr.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/memrchr.c
+memrchr.i: $(srcdir)/memrchr.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+memrchr.plog: memrchr.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/memrchr.c --i-file $< --output-file $@
+mkdir_parents.lo: $(srcdir)/mkdir_parents.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                  $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/mkdir_parents.c
+mkdir_parents.i: $(srcdir)/mkdir_parents.c $(incdir)/compat/stdbool.h \
+                  $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
+                  $(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mkdir_parents.plog: mkdir_parents.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/mkdir_parents.c --i-file $< --output-file $@
+mkdirat.lo: $(srcdir)/mkdirat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/mkdirat.c
+mkdirat.i: $(srcdir)/mkdirat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mkdirat.plog: mkdirat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/mkdirat.c --i-file $< --output-file $@
+mksiglist.lo: $(srcdir)/mksiglist.c $(incdir)/sudo_compat.h \
+              $(srcdir)/mksiglist.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/mksiglist.c
+mksiglist.i: $(srcdir)/mksiglist.c $(incdir)/sudo_compat.h \
+              $(srcdir)/mksiglist.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mksiglist.plog: mksiglist.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/mksiglist.c --i-file $< --output-file $@
+mksigname.lo: $(srcdir)/mksigname.c $(incdir)/sudo_compat.h \
+              $(srcdir)/mksigname.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/mksigname.c
+mksigname.i: $(srcdir)/mksigname.c $(incdir)/sudo_compat.h \
+              $(srcdir)/mksigname.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mksigname.plog: mksigname.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/mksigname.c --i-file $< --output-file $@
+mktemp.lo: $(srcdir)/mktemp.c $(incdir)/sudo_compat.h $(incdir)/sudo_rand.h \
+           $(top_builddir)/config.h $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/mktemp.c
+mktemp.i: $(srcdir)/mktemp.c $(incdir)/sudo_compat.h $(incdir)/sudo_rand.h \
+           $(top_builddir)/config.h $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mktemp.plog: mktemp.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/mktemp.c --i-file $< --output-file $@
+mktemp_test.lo: $(srcdir)/regress/mktemp/mktemp_test.c \
+                $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/mktemp/mktemp_test.c
+mktemp_test.i: $(srcdir)/regress/mktemp/mktemp_test.c \
+                $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mktemp_test.plog: mktemp_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/mktemp/mktemp_test.c --i-file $< --output-file $@
+mmap_alloc.lo: $(srcdir)/mmap_alloc.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/mmap_alloc.c
+mmap_alloc.i: $(srcdir)/mmap_alloc.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+mmap_alloc.plog: mmap_alloc.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/mmap_alloc.c --i-file $< --output-file $@
+multiarch.lo: $(srcdir)/multiarch.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/multiarch.c
+multiarch.i: $(srcdir)/multiarch.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+multiarch.plog: multiarch.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/multiarch.c --i-file $< --output-file $@
+multiarch_test.lo: $(srcdir)/regress/multiarch/multiarch_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/multiarch/multiarch_test.c
+multiarch_test.i: $(srcdir)/regress/multiarch/multiarch_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+multiarch_test.plog: multiarch_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/multiarch/multiarch_test.c --i-file $< --output-file $@
+nanosleep.lo: $(srcdir)/nanosleep.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/nanosleep.c
+nanosleep.i: $(srcdir)/nanosleep.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+nanosleep.plog: nanosleep.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/nanosleep.c --i-file $< --output-file $@
+open_parent_dir_test.lo: \
+                         $(srcdir)/regress/open_parent_dir/open_parent_dir_test.c \
+                         $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                         $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                         $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/open_parent_dir/open_parent_dir_test.c
+open_parent_dir_test.i: \
+                         $(srcdir)/regress/open_parent_dir/open_parent_dir_test.c \
+                         $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                         $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                         $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+open_parent_dir_test.plog: open_parent_dir_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/open_parent_dir/open_parent_dir_test.c --i-file $< --output-file $@
+openat.lo: $(srcdir)/openat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/openat.c
+openat.i: $(srcdir)/openat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+openat.plog: openat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/openat.c --i-file $< --output-file $@
+parse_gids_test.lo: $(srcdir)/regress/parse_gids/parse_gids_test.c \
+                    $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                    $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                    $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/parse_gids/parse_gids_test.c
+parse_gids_test.i: $(srcdir)/regress/parse_gids/parse_gids_test.c \
+                    $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                    $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                    $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+parse_gids_test.plog: parse_gids_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/parse_gids/parse_gids_test.c --i-file $< --output-file $@
+parseln.lo: $(srcdir)/parseln.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/parseln.c
+parseln.i: $(srcdir)/parseln.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+parseln.plog: parseln.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/parseln.c --i-file $< --output-file $@
+parseln_test.lo: $(srcdir)/regress/sudo_parseln/parseln_test.c \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/sudo_parseln/parseln_test.c
+parseln_test.i: $(srcdir)/regress/sudo_parseln/parseln_test.c \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+parseln_test.plog: parseln_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/sudo_parseln/parseln_test.c --i-file $< --output-file $@
+pipe2.lo: $(srcdir)/pipe2.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/pipe2.c
+pipe2.i: $(srcdir)/pipe2.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+pipe2.plog: pipe2.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/pipe2.c --i-file $< --output-file $@
+pread.lo: $(srcdir)/pread.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/pread.c
+pread.i: $(srcdir)/pread.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+pread.plog: pread.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/pread.c --i-file $< --output-file $@
+progname.lo: $(srcdir)/progname.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/progname.c
+progname.i: $(srcdir)/progname.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+progname.plog: progname.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/progname.c --i-file $< --output-file $@
+progname_test.lo: $(srcdir)/regress/progname/progname_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/progname/progname_test.c
+progname_test.i: $(srcdir)/regress/progname/progname_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+progname_test.plog: progname_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/progname/progname_test.c --i-file $< --output-file $@
+pw_dup.lo: $(srcdir)/pw_dup.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/pw_dup.c
+pw_dup.i: $(srcdir)/pw_dup.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+pw_dup.plog: pw_dup.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/pw_dup.c --i-file $< --output-file $@
+pwrite.lo: $(srcdir)/pwrite.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/pwrite.c
+pwrite.i: $(srcdir)/pwrite.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+pwrite.plog: pwrite.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/pwrite.c --i-file $< --output-file $@
+rcstr.lo: $(srcdir)/rcstr.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+          $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/rcstr.c
+rcstr.i: $(srcdir)/rcstr.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+          $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+rcstr.plog: rcstr.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/rcstr.c --i-file $< --output-file $@
+reallocarray.lo: $(srcdir)/reallocarray.c $(incdir)/sudo_compat.h \
+                 $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/reallocarray.c
+reallocarray.i: $(srcdir)/reallocarray.c $(incdir)/sudo_compat.h \
+                 $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+reallocarray.plog: reallocarray.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/reallocarray.c --i-file $< --output-file $@
+regex.lo: $(srcdir)/regex.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_debug.h $(incdir)/sudo_gettext.h \
+          $(incdir)/sudo_queue.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regex.c
+regex.i: $(srcdir)/regex.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+          $(incdir)/sudo_debug.h $(incdir)/sudo_gettext.h \
+          $(incdir)/sudo_queue.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+regex.plog: regex.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regex.c --i-file $< --output-file $@
+regex_test.lo: $(srcdir)/regress/regex/regex_test.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/regex/regex_test.c
+regex_test.i: $(srcdir)/regress/regex/regex_test.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+regex_test.plog: regex_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/regex/regex_test.c --i-file $< --output-file $@
+roundup.lo: $(srcdir)/roundup.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/roundup.c
+roundup.i: $(srcdir)/roundup.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+roundup.plog: roundup.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/roundup.c --i-file $< --output-file $@
+secure_path.lo: $(srcdir)/secure_path.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/secure_path.c
+secure_path.i: $(srcdir)/secure_path.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+                $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+                $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+secure_path.plog: secure_path.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/secure_path.c --i-file $< --output-file $@
+setgroups.lo: $(srcdir)/setgroups.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/setgroups.c
+setgroups.i: $(srcdir)/setgroups.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+setgroups.plog: setgroups.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/setgroups.c --i-file $< --output-file $@
+sha2.lo: $(srcdir)/sha2.c $(incdir)/compat/endian.h $(incdir)/compat/sha2.h \
+         $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/sha2.c
+sha2.i: $(srcdir)/sha2.c $(incdir)/compat/endian.h $(incdir)/compat/sha2.h \
+         $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+sha2.plog: sha2.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/sha2.c --i-file $< --output-file $@
+sig2str.lo: $(srcdir)/sig2str.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/sig2str.c
+sig2str.i: $(srcdir)/sig2str.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+sig2str.plog: sig2str.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/sig2str.c --i-file $< --output-file $@
+siglist.lo: siglist.c 
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) siglist.c
+siglist.i: siglist.c 
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+siglist.plog: siglist.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file siglist.c --i-file $< --output-file $@
+signame.lo: signame.c 
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) signame.c
+signame.i: signame.c 
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+signame.plog: signame.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file signame.c --i-file $< --output-file $@
+snprintf.lo: $(srcdir)/snprintf.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/snprintf.c
+snprintf.i: $(srcdir)/snprintf.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+snprintf.plog: snprintf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/snprintf.c --i-file $< --output-file $@
+str2sig.lo: $(srcdir)/str2sig.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/str2sig.c
+str2sig.i: $(srcdir)/str2sig.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+str2sig.plog: str2sig.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/str2sig.c --i-file $< --output-file $@
+strlcat.lo: $(srcdir)/strlcat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strlcat.c
+strlcat.i: $(srcdir)/strlcat.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strlcat.plog: strlcat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strlcat.c --i-file $< --output-file $@
+strlcpy.lo: $(srcdir)/strlcpy.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strlcpy.c
+strlcpy.i: $(srcdir)/strlcpy.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strlcpy.plog: strlcpy.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strlcpy.c --i-file $< --output-file $@
+strndup.lo: $(srcdir)/strndup.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strndup.c
+strndup.i: $(srcdir)/strndup.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strndup.plog: strndup.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strndup.c --i-file $< --output-file $@
+strnlen.lo: $(srcdir)/strnlen.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strnlen.c
+strnlen.i: $(srcdir)/strnlen.c $(incdir)/sudo_compat.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strnlen.plog: strnlen.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strnlen.c --i-file $< --output-file $@
+strsig_test.lo: $(srcdir)/regress/strsig/strsig_test.c \
+                $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/strsig/strsig_test.c
+strsig_test.i: $(srcdir)/regress/strsig/strsig_test.c \
+                $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strsig_test.plog: strsig_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/strsig/strsig_test.c --i-file $< --output-file $@
+strsignal.lo: $(srcdir)/strsignal.c $(incdir)/sudo_compat.h \
+              $(incdir)/sudo_gettext.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strsignal.c
+strsignal.i: $(srcdir)/strsignal.c $(incdir)/sudo_compat.h \
+              $(incdir)/sudo_gettext.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strsignal.plog: strsignal.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strsignal.c --i-file $< --output-file $@
+strsplit.lo: $(srcdir)/strsplit.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+             $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strsplit.c
+strsplit.i: $(srcdir)/strsplit.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+             $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strsplit.plog: strsplit.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strsplit.c --i-file $< --output-file $@
+strsplit_test.lo: $(srcdir)/regress/strsplit/strsplit_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/strsplit/strsplit_test.c
+strsplit_test.i: $(srcdir)/regress/strsplit/strsplit_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strsplit_test.plog: strsplit_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/strsplit/strsplit_test.c --i-file $< --output-file $@
+strtobool.lo: $(srcdir)/strtobool.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strtobool.c
+strtobool.i: $(srcdir)/strtobool.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtobool.plog: strtobool.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strtobool.c --i-file $< --output-file $@
+strtobool_test.lo: $(srcdir)/regress/strtofoo/strtobool_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/strtofoo/strtobool_test.c
+strtobool_test.i: $(srcdir)/regress/strtofoo/strtobool_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtobool_test.plog: strtobool_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/strtofoo/strtobool_test.c --i-file $< --output-file $@
+strtoid.lo: $(srcdir)/strtoid.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strtoid.c
+strtoid.i: $(srcdir)/strtoid.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+            $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtoid.plog: strtoid.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strtoid.c --i-file $< --output-file $@
+strtoid_test.lo: $(srcdir)/regress/strtofoo/strtoid_test.c \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/strtofoo/strtoid_test.c
+strtoid_test.i: $(srcdir)/regress/strtofoo/strtoid_test.c \
+                 $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                 $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                 $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtoid_test.plog: strtoid_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/strtofoo/strtoid_test.c --i-file $< --output-file $@
+strtomode.lo: $(srcdir)/strtomode.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strtomode.c
+strtomode.i: $(srcdir)/strtomode.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtomode.plog: strtomode.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strtomode.c --i-file $< --output-file $@
+strtomode_test.lo: $(srcdir)/regress/strtofoo/strtomode_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/strtofoo/strtomode_test.c
+strtomode_test.i: $(srcdir)/regress/strtofoo/strtomode_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                   $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtomode_test.plog: strtomode_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/strtofoo/strtomode_test.c --i-file $< --output-file $@
+strtonum.lo: $(srcdir)/strtonum.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_gettext.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/strtonum.c
+strtonum.i: $(srcdir)/strtonum.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_gettext.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtonum.plog: strtonum.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/strtonum.c --i-file $< --output-file $@
+strtonum_test.lo: $(srcdir)/regress/strtofoo/strtonum_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/strtofoo/strtonum_test.c
+strtonum_test.i: $(srcdir)/regress/strtofoo/strtonum_test.c \
+                  $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                  $(incdir)/sudo_fatal.h $(incdir)/sudo_plugin.h \
+                  $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+strtonum_test.plog: strtonum_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/strtofoo/strtonum_test.c --i-file $< --output-file $@
+sudo_conf.lo: $(srcdir)/sudo_conf.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_conf.h \
+              $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_plugin.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/sudo_conf.c
+sudo_conf.i: $(srcdir)/sudo_conf.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_conf.h \
+              $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_plugin.h \
+              $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+sudo_conf.plog: sudo_conf.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/sudo_conf.c --i-file $< --output-file $@
+sudo_debug.lo: $(srcdir)/sudo_debug.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_conf.h \
+               $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_gettext.h $(incdir)/sudo_plugin.h \
+               $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/sudo_debug.c
+sudo_debug.i: $(srcdir)/sudo_debug.c $(incdir)/compat/stdbool.h \
+               $(incdir)/sudo_compat.h $(incdir)/sudo_conf.h \
+               $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \
+               $(incdir)/sudo_gettext.h $(incdir)/sudo_plugin.h \
+               $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+               $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+sudo_debug.plog: sudo_debug.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/sudo_debug.c --i-file $< --output-file $@
+sudo_dso.lo: $(srcdir)/sudo_dso.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_dso.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/sudo_dso.c
+sudo_dso.i: $(srcdir)/sudo_dso.c $(incdir)/compat/stdbool.h \
+             $(incdir)/sudo_compat.h $(incdir)/sudo_dso.h \
+             $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+sudo_dso.plog: sudo_dso.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/sudo_dso.c --i-file $< --output-file $@
+term.lo: $(srcdir)/term.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+         $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/term.c
+term.i: $(srcdir)/term.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+         $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+term.plog: term.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/term.c --i-file $< --output-file $@
+timegm.lo: $(srcdir)/timegm.c $(incdir)/compat/stdbool.h \
+           $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+           $(incdir)/sudo_queue.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/timegm.c
+timegm.i: $(srcdir)/timegm.c $(incdir)/compat/stdbool.h \
+           $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+           $(incdir)/sudo_queue.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+timegm.plog: timegm.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/timegm.c --i-file $< --output-file $@
+ttyname_dev.lo: $(srcdir)/ttyname_dev.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_conf.h \
+                $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
+                $(incdir)/sudo_util.h $(top_builddir)/config.h \
+                $(top_builddir)/pathnames.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/ttyname_dev.c
+ttyname_dev.i: $(srcdir)/ttyname_dev.c $(incdir)/compat/stdbool.h \
+                $(incdir)/sudo_compat.h $(incdir)/sudo_conf.h \
+                $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
+                $(incdir)/sudo_util.h $(top_builddir)/config.h \
+                $(top_builddir)/pathnames.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+ttyname_dev.plog: ttyname_dev.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/ttyname_dev.c --i-file $< --output-file $@
+ttysize.lo: $(srcdir)/ttysize.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/ttysize.c
+ttysize.i: $(srcdir)/ttysize.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+            $(incdir)/sudo_queue.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+ttysize.plog: ttysize.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/ttysize.c --i-file $< --output-file $@
+unlinkat.lo: $(srcdir)/unlinkat.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/unlinkat.c
+unlinkat.i: $(srcdir)/unlinkat.c $(incdir)/sudo_compat.h \
+             $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+unlinkat.plog: unlinkat.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/unlinkat.c --i-file $< --output-file $@
+utimens.lo: $(srcdir)/utimens.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/utimens.c
+utimens.i: $(srcdir)/utimens.c $(incdir)/compat/stdbool.h \
+            $(incdir)/sudo_compat.h $(incdir)/sudo_util.h \
+            $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+utimens.plog: utimens.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/utimens.c --i-file $< --output-file $@
+uuid.lo: $(srcdir)/uuid.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_rand.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/uuid.c
+uuid.i: $(srcdir)/uuid.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+         $(incdir)/sudo_rand.h $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+uuid.plog: uuid.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/uuid.c --i-file $< --output-file $@
+uuid_test.lo: $(srcdir)/regress/uuid/uuid_test.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/regress/uuid/uuid_test.c
+uuid_test.i: $(srcdir)/regress/uuid/uuid_test.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_fatal.h \
+              $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \
+              $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+uuid_test.plog: uuid_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/uuid/uuid_test.c --i-file $< --output-file $@
diff --git a/lib/util/aix.c b/lib/util/aix.c
new file mode 100644
index 0000000..8a1c750
--- /dev/null
+++ b/lib/util/aix.c
@@ -0,0 +1,290 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2008, 2010-2016 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/resource.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <usersec.h>
+#include <uinfo.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+
+#ifdef HAVE_GETUSERATTR
+
+#ifndef HAVE_SETRLIMIT64
+# define setrlimit64(a, b) setrlimit(a, b)
+# define rlimit64 rlimit
+# define rlim64_t rlim_t
+# define RLIM64_INFINITY RLIM_INFINITY
+#endif /* HAVE_SETRLIMIT64 */
+
+#ifndef RLIM_SAVED_MAX
+# define RLIM_SAVED_MAX	RLIM64_INFINITY
+#endif
+
+struct aix_limit {
+    int resource;
+    const char *soft;
+    const char *hard;
+    int factor;
+};
+
+static struct aix_limit aix_limits[] = {
+    { RLIMIT_FSIZE, S_UFSIZE, S_UFSIZE_HARD, 512 },
+    { RLIMIT_CPU, S_UCPU, S_UCPU_HARD, 1 },
+    { RLIMIT_DATA, S_UDATA, S_UDATA_HARD, 512 },
+    { RLIMIT_STACK, S_USTACK, S_USTACK_HARD, 512 },
+    { RLIMIT_RSS, S_URSS, S_URSS_HARD, 512 },
+    { RLIMIT_CORE, S_UCORE, S_UCORE_HARD, 512 },
+    { RLIMIT_NOFILE, S_UNOFILE, S_UNOFILE_HARD, 1 }
+};
+
+static int
+aix_getlimit(const char *user, const char *lim, int *valp)
+{
+    debug_decl(aix_getlimit, SUDO_DEBUG_UTIL);
+
+    if (getuserattr((char *)user, (char *)lim, valp, SEC_INT) != 0)
+	debug_return_int(-1);
+    debug_return_int(0);
+}
+
+static int
+aix_setlimits(char *user)
+{
+    struct rlimit64 rlim;
+    int val;
+    size_t n;
+    debug_decl(aix_setlimits, SUDO_DEBUG_UTIL);
+
+    if (setuserdb(S_READ) != 0) {
+	sudo_warn("%s", U_("unable to open userdb"));
+	debug_return_int(-1);
+    }
+
+    /*
+     * For each resource limit, get the soft/hard values for the user
+     * and set those values via setrlimit64().  Must be run as euid 0.
+     */
+    for (n = 0; n < nitems(aix_limits); n++) {
+	/*
+	 * We have two strategies, depending on whether or not the
+	 * hard limit has been defined.
+	 */
+	if (aix_getlimit(user, aix_limits[n].hard, &val) == 0) {
+	    rlim.rlim_max = val == -1 ? RLIM64_INFINITY : (rlim64_t)val * aix_limits[n].factor;
+	    if (aix_getlimit(user, aix_limits[n].soft, &val) == 0)
+		rlim.rlim_cur = val == -1 ? RLIM64_INFINITY : (rlim64_t)val * aix_limits[n].factor;
+	    else
+		rlim.rlim_cur = rlim.rlim_max;	/* soft not specd, use hard */
+	} else {
+	    /* No hard limit set, try soft limit, if it exists. */
+	    if (aix_getlimit(user, aix_limits[n].soft, &val) == -1)
+		continue;
+	    rlim.rlim_cur = val == -1 ? RLIM64_INFINITY : (rlim64_t)val * aix_limits[n].factor;
+
+	    /* Set default hard limit as per limits(4). */
+	    switch (aix_limits[n].resource) {
+		case RLIMIT_CPU:
+		case RLIMIT_FSIZE:
+		    rlim.rlim_max = rlim.rlim_cur;
+		    break;
+		case RLIMIT_STACK:
+		    rlim.rlim_max = 4194304UL * aix_limits[n].factor;
+		    break;
+		default:
+		    rlim.rlim_max = RLIM64_INFINITY;
+		    break;
+	    }
+	}
+	(void)setrlimit64(aix_limits[n].resource, &rlim);
+    }
+    enduserdb();
+    debug_return_int(0);
+}
+
+#ifdef HAVE_SETAUTHDB
+
+# ifndef HAVE_AUTHDB_T
+typedef char authdb_t[16];
+# endif
+
+/* The empty string means to access all defined authentication registries. */
+static authdb_t old_registry;
+
+# if defined(HAVE_DECL_SETAUTHDB) && !HAVE_DECL_SETAUTHDB
+int setauthdb(authdb_t new, authdb_t old);
+int getauthdb(authdb_t val);
+# endif
+# if defined(HAVE_DECL_USRINFO) && !HAVE_DECL_USRINFO
+int usrinfo(int cmd, char *buf, int count);
+# endif
+
+/*
+ * Look up authentication registry for user (SYSTEM in /etc/security/user) and
+ * set it as the default for the process.  This ensures that password and
+ * group lookups are made against the correct source (files, NIS, LDAP, etc).
+ * Does not modify errno even on error since callers do not check return value.
+ */
+int
+aix_getauthregistry_v1(char *user, char *saved_registry)
+{
+    int serrno = errno;
+    int ret = -1;
+    debug_decl(aix_getauthregistry, SUDO_DEBUG_UTIL);
+
+    saved_registry[0] = '\0';
+    if (user != NULL) {
+	char *registry;
+
+	if (setuserdb(S_READ) != 0) {
+	    sudo_warn("%s", U_("unable to open userdb"));
+	    goto done;
+	}
+	ret = getuserattr(user, (char *)S_REGISTRY, &registry, SEC_CHAR);
+	if (ret == 0) {
+	    /* sizeof(authdb_t) is guaranteed to be 16 */
+	    if (strlcpy(saved_registry, registry, 16) >= 16) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "registry for user %s too long: %s", user, registry);
+	    }
+	    sudo_debug_printf(SUDO_DEBUG_INFO,
+		"%s: saved authentication registry for user %s is %s",
+		__func__, user, saved_registry);
+	}
+	enduserdb();
+    } else {
+	/* Get the process-wide registry. */
+	ret = getauthdb(saved_registry);
+    }
+done:
+    errno = serrno;
+    debug_return_int(ret);
+}
+
+/*
+ * Set the specified authentication registry for user (SYSTEM in
+ * /etc/security/user) and set it as the default for the process.
+ * This ensures that password and group lookups are made against
+ * the correct source (files, NIS, LDAP, etc).
+ * If registry is NULL, look it up based on the user name.
+ * Does not modify errno even on error since callers do not check return value.
+ */
+int
+aix_setauthdb_v1(char *user)
+{
+    return aix_setauthdb_v2(user, NULL);
+}
+
+int
+aix_setauthdb_v2(char *user, char *registry)
+{
+    authdb_t regbuf;
+    int serrno = errno;
+    int ret = -1;
+    debug_decl(aix_setauthdb, SUDO_DEBUG_UTIL);
+
+    if (user != NULL) {
+	/* Look up authentication registry if one is not provided. */
+	if (registry == NULL) {
+	    if (aix_getauthregistry(user, regbuf) != 0)
+		goto done;
+	    registry = regbuf;
+	}
+	ret = setauthdb(registry, old_registry);
+	if (ret != 0) {
+	    sudo_warn(U_("unable to switch to registry \"%s\" for %s"),
+		registry, user);
+	} else {
+		sudo_debug_printf(SUDO_DEBUG_INFO,
+		    "%s: setting authentication registry to %s",
+		    __func__, registry);
+	}
+    }
+done:
+    errno = serrno;
+    debug_return_int(ret);
+}
+
+/*
+ * Restore the saved authentication registry, if any.
+ * Does not modify errno even on error since callers do not check return value.
+ */
+int
+aix_restoreauthdb_v1(void)
+{
+    int serrno = errno;
+    int ret = 0;
+    debug_decl(aix_setauthdb, SUDO_DEBUG_UTIL);
+
+    if (setauthdb(old_registry, NULL) != 0) {
+	sudo_warn("%s", U_("unable to restore registry"));
+	ret = -1;
+    } else {
+	sudo_debug_printf(SUDO_DEBUG_INFO,
+	    "%s: setting authentication registry to %s",
+	    __func__, old_registry);
+    }
+    errno = serrno;
+    debug_return_int(ret);
+}
+#endif
+
+int
+aix_prep_user_v1(char *user, const char *tty)
+{
+    char *info;
+    int len;
+    debug_decl(aix_setauthdb, SUDO_DEBUG_UTIL);
+
+    /* set usrinfo, like login(1) does */
+    len = asprintf(&info, "NAME=%s%cLOGIN=%s%cLOGNAME=%s%cTTY=%s%c",
+	user, '\0', user, '\0', user, '\0', tty ? tty : "", '\0');
+    if (len == -1) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	debug_return_int(-1);
+    }
+    (void)usrinfo(SETUINFO, info, len);
+    free(info);
+
+#ifdef HAVE_SETAUTHDB
+    /* set authentication registry */
+    if (aix_setauthdb(user, NULL) != 0)
+	debug_return_int(-1);
+#endif
+
+    /* set resource limits */
+    if (aix_setlimits(user) != 0)
+	debug_return_int(-1);
+
+    debug_return_int(0);
+}
+#endif /* HAVE_GETUSERATTR */
diff --git a/lib/util/arc4random.c b/lib/util/arc4random.c
new file mode 100644
index 0000000..4002645
--- /dev/null
+++ b/lib/util/arc4random.c
@@ -0,0 +1,206 @@
+/*	$OpenBSD: arc4random.c,v 1.54 2015/09/13 08:31:47 guenther Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1996, David Mazieres <dm@uun.org>
+ * Copyright (c) 2008, Damien Miller <djm@openbsd.org>
+ * Copyright (c) 2013, Markus Friedl <markus@openbsd.org>
+ * Copyright (c) 2014, Theo de Raadt <deraadt@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+/*
+ * ChaCha based random number generator for OpenBSD.
+ */
+
+#include <config.h>
+
+#ifndef HAVE_ARC4RANDOM
+
+#ifdef HAVE_SYS_RANDOM_H
+# include <sys/random.h>
+#endif
+
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_rand.h"
+
+#define KEYSTREAM_ONLY
+#include "chacha_private.h"
+
+#define minimum(a, b) ((a) < (b) ? (a) : (b))
+
+#ifdef __GNUC__
+# define inline __inline
+#else				/* !__GNUC__ */
+# define inline
+#endif				/* !__GNUC__ */
+
+/* Sudo isn't multithreaded */
+#define _ARC4_LOCK()
+#define _ARC4_UNLOCK()
+
+#define KEYSZ	32
+#define IVSZ	8
+#define BLOCKSZ	64
+#define RSBUFSZ	(16*BLOCKSZ)
+static int rs_initialized;
+static pid_t rs_stir_pid;
+static chacha_ctx rs;		/* chacha context for random keystream */
+static u_char rs_buf[RSBUFSZ];	/* keystream blocks */
+static size_t rs_have;		/* valid bytes at end of rs_buf */
+static size_t rs_count;		/* bytes till reseed */
+
+static inline void _rs_rekey(unsigned char *dat, size_t datlen);
+
+static inline void
+_rs_init(unsigned char *buf, size_t n)
+{
+	if (n < KEYSZ + IVSZ)
+		return;
+	chacha_keysetup(&rs, buf, KEYSZ * 8, 0);
+	chacha_ivsetup(&rs, buf + KEYSZ);
+}
+
+static void
+_rs_stir(void)
+{
+	unsigned char rnd[KEYSZ + IVSZ];
+
+	if (getentropy(rnd, sizeof rnd) == -1)
+		sudo_fatal_nodebug("getentropy");
+
+	if (!rs_initialized) {
+		rs_initialized = 1;
+		_rs_init(rnd, sizeof(rnd));
+	} else
+		_rs_rekey(rnd, sizeof(rnd));
+	explicit_bzero(rnd, sizeof(rnd)); /* discard source seed */
+
+	/* invalidate rs_buf */
+	rs_have = 0;
+	memset(rs_buf, 0, sizeof(rs_buf));
+
+	rs_count = 1600000;
+}
+
+static inline void
+_rs_stir_if_needed(size_t len)
+{
+	pid_t pid = getpid();
+
+	if (rs_count <= len || !rs_initialized || rs_stir_pid != pid) {
+		rs_stir_pid = pid;
+		_rs_stir();
+	} else
+		rs_count -= len;
+}
+
+static inline void
+_rs_rekey(unsigned char *dat, size_t datlen)
+{
+#ifndef KEYSTREAM_ONLY
+	memset(rs_buf, 0, sizeof(rs_buf));
+#endif
+	/* fill rs_buf with the keystream */
+	chacha_encrypt_bytes(&rs, rs_buf, rs_buf, sizeof(rs_buf));
+	/* mix in optional user provided data */
+	if (dat) {
+		size_t i, m;
+
+		m = minimum(datlen, KEYSZ + IVSZ);
+		for (i = 0; i < m; i++)
+			rs_buf[i] ^= dat[i];
+	}
+	/* immediately reinit for backtracking resistance */
+	_rs_init(rs_buf, KEYSZ + IVSZ);
+	memset(rs_buf, 0, KEYSZ + IVSZ); // -V::512, 1086
+	rs_have = sizeof(rs_buf) - KEYSZ - IVSZ;
+}
+
+static inline void
+_rs_random_buf(void *_buf, size_t n)
+{
+	unsigned char *buf = _buf;
+	unsigned char *keystream;
+	size_t m;
+
+	_rs_stir_if_needed(n);
+	while (n > 0) {
+		if (rs_have > 0) {
+			m = minimum(n, rs_have);
+			keystream = rs_buf + sizeof(rs_buf) - rs_have;
+			memcpy(buf, keystream, m);
+			memset(keystream, 0, m);
+			buf += m;
+			n -= m;
+			rs_have -= m;
+		}
+		if (rs_have == 0)
+			_rs_rekey(NULL, 0);
+	}
+}
+
+static inline void
+_rs_random_u32(uint32_t *val)
+{
+	unsigned char *keystream;
+
+	_rs_stir_if_needed(sizeof(*val));
+	if (rs_have < sizeof(*val))
+		_rs_rekey(NULL, 0);
+	keystream = rs_buf + sizeof(rs_buf) - rs_have;
+	memcpy(val, keystream, sizeof(*val));
+	memset(keystream, 0, sizeof(*val));
+	rs_have -= sizeof(*val);
+}
+
+uint32_t
+sudo_arc4random(void)
+{
+	uint32_t val;
+
+	_ARC4_LOCK();
+	_rs_random_u32(&val);
+	_ARC4_UNLOCK();
+	return val;
+}
+
+void
+sudo_arc4random_buf(void *buf, size_t n)
+{
+	_ARC4_LOCK();
+	_rs_random_buf(buf, n);
+	_ARC4_UNLOCK();
+}
+
+#endif /* HAVE_ARC4RANDOM */
diff --git a/lib/util/arc4random_buf.c b/lib/util/arc4random_buf.c
new file mode 100644
index 0000000..053c922
--- /dev/null
+++ b/lib/util/arc4random_buf.c
@@ -0,0 +1,70 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_ARC4RANDOM_BUF
+
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_rand.h"
+
+#define minimum(a, b) ((a) < (b) ? (a) : (b))
+
+/*
+ * Call arc4random() repeatedly to fill buf with n bytes of random data.
+ */
+void
+sudo_arc4random_buf(void *buf, size_t n)
+{
+	char *cp = buf;
+
+	while (n != 0) {
+		size_t m = minimum(n, 4);
+		uint32_t val = arc4random();
+
+		switch (m) {
+		case 4:
+			*cp++ = (val >> 24) & 0xff;
+			FALLTHROUGH;
+		case 3:
+			*cp++ = (val >> 16) & 0xff;
+			FALLTHROUGH;
+		case 2:
+			*cp++ = (val >> 8) & 0xff;
+			FALLTHROUGH;
+		case 1:
+			*cp++ = val & 0xff;
+			break;
+		}
+		n -= m;
+	}
+}
+
+#endif /* HAVE_ARC4RANDOM_BUF */
diff --git a/lib/util/arc4random_uniform.c b/lib/util/arc4random_uniform.c
new file mode 100644
index 0000000..3299a14
--- /dev/null
+++ b/lib/util/arc4random_uniform.c
@@ -0,0 +1,76 @@
+/*	$OpenBSD: arc4random_uniform.c,v 1.2 2015/09/13 08:31:47 guenther Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2008, Damien Miller <djm@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_ARC4RANDOM_UNIFORM
+
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_rand.h"
+
+/*
+ * Calculate a uniformly distributed random number less than upper_bound
+ * avoiding "modulo bias".
+ *
+ * Uniformity is achieved by generating new random numbers until the one
+ * returned is outside the range [0, 2**32 % upper_bound).  This
+ * guarantees the selected random number will be inside
+ * [2**32 % upper_bound, 2**32) which maps back to [0, upper_bound)
+ * after reduction modulo upper_bound.
+ */
+uint32_t
+sudo_arc4random_uniform(uint32_t upper_bound)
+{
+	uint32_t r, min;
+
+	if (upper_bound < 2)
+		return 0;
+
+	/* 2**32 % x == (2**32 - x) % x */
+	min = -upper_bound % upper_bound;
+
+	/*
+	 * This could theoretically loop forever but each retry has
+	 * p > 0.5 (worst case, usually far better) of selecting a
+	 * number inside the range we need, so it should rarely need
+	 * to re-roll.
+	 */
+	for (;;) {
+		r = arc4random();
+		if (r >= min)
+			break;
+	}
+
+	return r % upper_bound;
+}
+
+#endif /* HAVE_ARC4RANDOM_UNIFORM */
diff --git a/lib/util/basename.c b/lib/util/basename.c
new file mode 100644
index 0000000..b757b36
--- /dev/null
+++ b/lib/util/basename.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+/*
+ * GNU-compatible basename(3)
+ * Unlike the POSIX version, this version never modifies its argument
+ * and returns an empty string if filename ends in a slash.
+ */
+char *
+sudo_basename_v1(const char *filename)
+{
+    char *base;
+
+    if ((base = strrchr(filename, '/')) != NULL)
+	base++;
+    else
+	base = (char *)filename;
+
+    return base;
+}
diff --git a/lib/util/cfmakeraw.c b/lib/util/cfmakeraw.c
new file mode 100644
index 0000000..956001f
--- /dev/null
+++ b/lib/util/cfmakeraw.c
@@ -0,0 +1,58 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <termios.h>
+
+#include "sudo_compat.h"
+
+/* Non-standard termios input flags */
+#ifndef IUCLC
+# define IUCLC		0
+#endif
+#ifndef IMAXBEL
+# define IMAXBEL	0
+#endif
+
+/* Non-standard termios local flags */
+#ifndef IEXTEN
+# define IEXTEN		0
+#endif
+
+/*
+ * Set termios to raw mode (BSD extension).
+ */
+void
+sudo_cfmakeraw(struct termios *term)
+{
+    /* Set terminal to raw mode */
+    CLR(term->c_iflag,
+	IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IMAXBEL|IUCLC);
+    CLR(term->c_oflag, OPOST);
+    CLR(term->c_lflag, ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+    CLR(term->c_cflag, CSIZE|PARENB);
+    SET(term->c_cflag, CS8);
+    term->c_cc[VMIN] = 1;
+    term->c_cc[VTIME] = 0;
+}
diff --git a/lib/util/chacha_private.h b/lib/util/chacha_private.h
new file mode 100644
index 0000000..7c3680f
--- /dev/null
+++ b/lib/util/chacha_private.h
@@ -0,0 +1,222 @@
+/*
+chacha-merged.c version 20080118
+D. J. Bernstein
+Public domain.
+*/
+
+/* $OpenBSD: chacha_private.h,v 1.2 2013/10/04 07:02:27 djm Exp $ */
+
+typedef unsigned char u8;
+typedef unsigned int u32;
+
+typedef struct
+{
+  u32 input[16]; /* could be compressed */
+} chacha_ctx;
+
+#define U8C(v) (v##U)
+#define U32C(v) (v##U)
+
+#define U8V(v) ((u8)(v) & U8C(0xFF))
+#define U32V(v) ((u32)(v) & U32C(0xFFFFFFFF))
+
+#define ROTL32(v, n) \
+  (U32V((v) << (n)) | ((v) >> (32 - (n))))
+
+#define U8TO32_LITTLE(p) \
+  (((u32)((p)[0])      ) | \
+   ((u32)((p)[1]) <<  8) | \
+   ((u32)((p)[2]) << 16) | \
+   ((u32)((p)[3]) << 24))
+
+#define U32TO8_LITTLE(p, v) \
+  do { \
+    (p)[0] = U8V((v)      ); \
+    (p)[1] = U8V((v) >>  8); \
+    (p)[2] = U8V((v) >> 16); \
+    (p)[3] = U8V((v) >> 24); \
+  } while (0)
+
+#define ROTATE(v,c) (ROTL32(v,c))
+#define XOR(v,w) ((v) ^ (w))
+#define PLUS(v,w) (U32V((v) + (w)))
+#define PLUSONE(v) (PLUS((v),1))
+
+#define QUARTERROUND(a,b,c,d) \
+  a = PLUS(a,b); d = ROTATE(XOR(d,a),16); \
+  c = PLUS(c,d); b = ROTATE(XOR(b,c),12); \
+  a = PLUS(a,b); d = ROTATE(XOR(d,a), 8); \
+  c = PLUS(c,d); b = ROTATE(XOR(b,c), 7);
+
+static const char sigma[16] = "expand 32-byte k";
+static const char tau[16] = "expand 16-byte k";
+
+static void
+chacha_keysetup(chacha_ctx *x,const u8 *k,u32 kbits,u32 ivbits)
+{
+  const char *constants;
+
+  x->input[4] = U8TO32_LITTLE(k + 0);
+  x->input[5] = U8TO32_LITTLE(k + 4);
+  x->input[6] = U8TO32_LITTLE(k + 8);
+  x->input[7] = U8TO32_LITTLE(k + 12);
+  if (kbits == 256) { /* recommended */
+    k += 16;
+    constants = sigma;
+  } else { /* kbits == 128 */
+    constants = tau;
+  }
+  x->input[8] = U8TO32_LITTLE(k + 0);
+  x->input[9] = U8TO32_LITTLE(k + 4);
+  x->input[10] = U8TO32_LITTLE(k + 8);
+  x->input[11] = U8TO32_LITTLE(k + 12);
+  x->input[0] = U8TO32_LITTLE(constants + 0);
+  x->input[1] = U8TO32_LITTLE(constants + 4);
+  x->input[2] = U8TO32_LITTLE(constants + 8);
+  x->input[3] = U8TO32_LITTLE(constants + 12);
+}
+
+static void
+chacha_ivsetup(chacha_ctx *x,const u8 *iv)
+{
+  x->input[12] = 0;
+  x->input[13] = 0;
+  x->input[14] = U8TO32_LITTLE(iv + 0);
+  x->input[15] = U8TO32_LITTLE(iv + 4);
+}
+
+static void
+chacha_encrypt_bytes(chacha_ctx *x,const u8 *m,u8 *c,u32 bytes)
+{
+  u32 x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;
+  u32 j0, j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11, j12, j13, j14, j15;
+  u8 *ctarget = NULL;
+  u8 tmp[64];
+  u_int i;
+
+  if (!bytes) return;
+
+  j0 = x->input[0];
+  j1 = x->input[1];
+  j2 = x->input[2];
+  j3 = x->input[3];
+  j4 = x->input[4];
+  j5 = x->input[5];
+  j6 = x->input[6];
+  j7 = x->input[7];
+  j8 = x->input[8];
+  j9 = x->input[9];
+  j10 = x->input[10];
+  j11 = x->input[11];
+  j12 = x->input[12];
+  j13 = x->input[13];
+  j14 = x->input[14];
+  j15 = x->input[15];
+
+  for (;;) {
+    if (bytes < 64) {
+      for (i = 0;i < bytes;++i) tmp[i] = m[i];
+      m = tmp;
+      ctarget = c;
+      c = tmp;
+    }
+    x0 = j0;
+    x1 = j1;
+    x2 = j2;
+    x3 = j3;
+    x4 = j4;
+    x5 = j5;
+    x6 = j6;
+    x7 = j7;
+    x8 = j8;
+    x9 = j9;
+    x10 = j10;
+    x11 = j11;
+    x12 = j12;
+    x13 = j13;
+    x14 = j14;
+    x15 = j15;
+    for (i = 20;i > 0;i -= 2) {
+      QUARTERROUND( x0, x4, x8,x12)
+      QUARTERROUND( x1, x5, x9,x13)
+      QUARTERROUND( x2, x6,x10,x14)
+      QUARTERROUND( x3, x7,x11,x15)
+      QUARTERROUND( x0, x5,x10,x15)
+      QUARTERROUND( x1, x6,x11,x12)
+      QUARTERROUND( x2, x7, x8,x13)
+      QUARTERROUND( x3, x4, x9,x14)
+    }
+    x0 = PLUS(x0,j0);
+    x1 = PLUS(x1,j1);
+    x2 = PLUS(x2,j2);
+    x3 = PLUS(x3,j3);
+    x4 = PLUS(x4,j4);
+    x5 = PLUS(x5,j5);
+    x6 = PLUS(x6,j6);
+    x7 = PLUS(x7,j7);
+    x8 = PLUS(x8,j8);
+    x9 = PLUS(x9,j9);
+    x10 = PLUS(x10,j10);
+    x11 = PLUS(x11,j11);
+    x12 = PLUS(x12,j12);
+    x13 = PLUS(x13,j13);
+    x14 = PLUS(x14,j14);
+    x15 = PLUS(x15,j15);
+
+#ifndef KEYSTREAM_ONLY
+    x0 = XOR(x0,U8TO32_LITTLE(m + 0));
+    x1 = XOR(x1,U8TO32_LITTLE(m + 4));
+    x2 = XOR(x2,U8TO32_LITTLE(m + 8));
+    x3 = XOR(x3,U8TO32_LITTLE(m + 12));
+    x4 = XOR(x4,U8TO32_LITTLE(m + 16));
+    x5 = XOR(x5,U8TO32_LITTLE(m + 20));
+    x6 = XOR(x6,U8TO32_LITTLE(m + 24));
+    x7 = XOR(x7,U8TO32_LITTLE(m + 28));
+    x8 = XOR(x8,U8TO32_LITTLE(m + 32));
+    x9 = XOR(x9,U8TO32_LITTLE(m + 36));
+    x10 = XOR(x10,U8TO32_LITTLE(m + 40));
+    x11 = XOR(x11,U8TO32_LITTLE(m + 44));
+    x12 = XOR(x12,U8TO32_LITTLE(m + 48));
+    x13 = XOR(x13,U8TO32_LITTLE(m + 52));
+    x14 = XOR(x14,U8TO32_LITTLE(m + 56));
+    x15 = XOR(x15,U8TO32_LITTLE(m + 60));
+#endif
+
+    j12 = PLUSONE(j12);
+    if (!j12) {
+      j13 = PLUSONE(j13);
+      /* stopping at 2^70 bytes per nonce is user's responsibility */
+    }
+
+    U32TO8_LITTLE(c + 0,x0);
+    U32TO8_LITTLE(c + 4,x1);
+    U32TO8_LITTLE(c + 8,x2);
+    U32TO8_LITTLE(c + 12,x3);
+    U32TO8_LITTLE(c + 16,x4);
+    U32TO8_LITTLE(c + 20,x5);
+    U32TO8_LITTLE(c + 24,x6);
+    U32TO8_LITTLE(c + 28,x7);
+    U32TO8_LITTLE(c + 32,x8);
+    U32TO8_LITTLE(c + 36,x9);
+    U32TO8_LITTLE(c + 40,x10);
+    U32TO8_LITTLE(c + 44,x11);
+    U32TO8_LITTLE(c + 48,x12);
+    U32TO8_LITTLE(c + 52,x13);
+    U32TO8_LITTLE(c + 56,x14);
+    U32TO8_LITTLE(c + 60,x15);
+
+    if (bytes <= 64) {
+      if (bytes < 64) {
+        for (i = 0;i < bytes;++i) ctarget[i] = c[i];
+      }
+      x->input[12] = j12;
+      x->input[13] = j13;
+      return;
+    }
+    bytes -= 64;
+    c += 64;
+#ifndef KEYSTREAM_ONLY
+    m += 64;
+#endif
+  }
+}
diff --git a/lib/util/closefrom.c b/lib/util/closefrom.c
new file mode 100644
index 0000000..64e9826
--- /dev/null
+++ b/lib/util/closefrom.c
@@ -0,0 +1,183 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2004-2005, 2007, 2010, 2012-2015, 2017-2022
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_CLOSEFROM
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef HAVE_PSTAT_GETPROC
+# include <sys/pstat.h>
+#else
+# include <dirent.h>
+#endif
+#ifdef HAVE_LIBPROC_H
+# include <libproc.h>
+#endif
+#ifdef HAVE_LINUX_CLOSE_RANGE_H
+# include <linux/close_range.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "pathnames.h"
+
+#ifndef OPEN_MAX
+# define OPEN_MAX	256
+#endif
+
+/* Avoid potential libdispatch crash on macOS when we close its fds. */
+#ifdef __APPLE__
+# define closefrom_close(x)	fcntl((x), F_SETFD, FD_CLOEXEC)
+#else
+# define closefrom_close(x)	close(x)
+#endif
+
+/*
+ * Close all file descriptors greater than or equal to lowfd.
+ * This is the expensive (fallback) method.
+ */
+static void
+closefrom_fallback(int lowfd)
+{
+    long fd, maxfd;
+
+    /*
+     * Fall back on sysconf(_SC_OPEN_MAX).  This is equivalent to
+     * checking the RLIMIT_NOFILE soft limit.  It is possible for
+     * there to be open file descriptors past this limit but there's
+     * not much we can do about that since the hard limit may be
+     * RLIM_INFINITY (LLONG_MAX or ULLONG_MAX on modern systems).
+     */
+    maxfd = sysconf(_SC_OPEN_MAX);
+    if (maxfd < OPEN_MAX)
+	maxfd = OPEN_MAX;
+
+    /* Make sure we didn't get RLIM_INFINITY as the upper limit. */
+    if (maxfd > INT_MAX)
+	maxfd = INT_MAX;
+
+    for (fd = lowfd; fd < maxfd; fd++) {
+	(void)closefrom_close((int)fd);
+    }
+}
+
+/*
+ * Close all file descriptors greater than or equal to lowfd.
+ * We try the fast way first, falling back on the slow method.
+ */
+void
+sudo_closefrom(int lowfd)
+{
+#if defined(HAVE_PSTAT_GETPROC)
+    struct pst_status pst;
+#elif defined(HAVE_DIRFD)
+    const char *path;
+    DIR *dirp;
+#endif
+#if defined(HAVE_PROC_PIDINFO)
+    struct proc_fdinfo *buf = NULL;
+    const pid_t pid = getpid();
+    int i, n, len;
+#endif
+
+    /* Try the fast method first, if possible. */
+#if defined(HAVE_FCNTL_CLOSEM)
+    if (fcntl(lowfd, F_CLOSEM, 0) != -1)
+	return;
+#elif defined(HAVE_CLOSE_RANGE)
+    if (close_range(lowfd, ~0U, 0) != -1)
+	return;
+#elif defined(HAVE_PROC_PIDINFO)
+    len = proc_pidinfo(pid, PROC_PIDLISTFDS, 0, NULL, 0);
+    switch (len) {
+    case 0:
+	/* No open files. */
+	return;
+    case -1:
+	/* Fall back on other methods. */
+	break;
+    default:
+	/* Allocate space for 4 extra fds to leave some wiggle room. */
+	buf = malloc(len + (PROC_PIDLISTFD_SIZE * 4));
+	if (buf == NULL)
+	    break;
+	n = proc_pidinfo(pid, PROC_PIDLISTFDS, 0, buf, len);
+	if (n == -1 || n > len) {
+	    free(buf);
+	    break;
+	}
+	n /= PROC_PIDLISTFD_SIZE;
+	for (i = 0; i < n; i++) {
+	    if (buf[i].proc_fd >= lowfd) {
+		(void)closefrom_close(buf[i].proc_fd);
+	    }
+	}
+	free(buf);
+	return;
+    }
+#endif /* HAVE_PROC_PIDINFO */
+#if defined(HAVE_PSTAT_GETPROC)
+    /*
+     * EOVERFLOW is not a fatal error for the fields we use.
+     * See the "EOVERFLOW Error" section of pstat_getvminfo(3).
+     */                             
+    if (pstat_getproc(&pst, sizeof(pst), 0, getpid()) != -1 ||
+	errno == EOVERFLOW) {
+	int fd;
+
+	for (fd = lowfd; fd <= pst.pst_highestfd; fd++)
+	    (void)closefrom_close(fd);
+	return;
+    }
+#elif defined(HAVE_DIRFD)
+    /* Use /proc/self/fd (or /dev/fd on macOS) if it exists. */
+# ifdef __APPLE__
+    path = _PATH_DEV "fd";
+# else
+    path = "/proc/self/fd";
+# endif
+    if ((dirp = opendir(path)) != NULL) {
+	struct dirent *dent;
+	while ((dent = readdir(dirp)) != NULL) {
+	    const char *errstr;
+	    int fd = sudo_strtonum(dent->d_name, lowfd, INT_MAX, &errstr);
+	    if (errstr == NULL && fd != dirfd(dirp)) {
+		(void)closefrom_close(fd);
+	    }
+	}
+	(void)closedir(dirp);
+	return;
+    }
+#endif /* HAVE_DIRFD */
+
+    /* Do things the slow way. */
+    closefrom_fallback(lowfd);
+}
+
+#endif /* HAVE_CLOSEFROM */
diff --git a/lib/util/digest.c b/lib/util/digest.c
new file mode 100644
index 0000000..b48bc48
--- /dev/null
+++ b/lib/util/digest.c
@@ -0,0 +1,165 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <unistd.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_digest.h"
+
+#ifdef HAVE_SHA224UPDATE
+# include <sha2.h>
+#else
+# include "compat/sha2.h"
+#endif
+
+static struct digest_function {
+    const unsigned int digest_len;
+    void (*init)(SHA2_CTX *);
+#ifdef SHA2_VOID_PTR
+    void (*update)(SHA2_CTX *, const void *, size_t);
+    void (*final)(void *, SHA2_CTX *);
+#else
+    void (*update)(SHA2_CTX *, const unsigned char *, size_t);
+    void (*final)(unsigned char *, SHA2_CTX *);
+#endif
+} digest_functions[] = {
+    {
+	SHA224_DIGEST_LENGTH,
+	SHA224Init,
+	SHA224Update,
+	SHA224Final
+    }, {
+	SHA256_DIGEST_LENGTH,
+	SHA256Init,
+	SHA256Update,
+	SHA256Final
+    }, {
+	SHA384_DIGEST_LENGTH,
+	SHA384Init,
+	SHA384Update,
+	SHA384Final
+    }, {
+	SHA512_DIGEST_LENGTH,
+	SHA512Init,
+	SHA512Update,
+	SHA512Final
+    }, {
+	0
+    }
+};
+
+struct sudo_digest {
+    struct digest_function *func;
+    SHA2_CTX ctx;
+};
+
+struct sudo_digest *
+sudo_digest_alloc_v1(int digest_type)
+{
+    debug_decl(sudo_digest_alloc, SUDO_DEBUG_UTIL);
+    struct digest_function *func = NULL;
+    struct sudo_digest *dig;
+    int i;
+
+    for (i = 0; digest_functions[i].digest_len != 0; i++) {
+	if (digest_type == i) {
+	    func = &digest_functions[i];
+	    break;
+	}
+    }
+    if (func == NULL) {
+	errno = EINVAL;
+	debug_return_ptr(NULL);
+    }
+
+    if ((dig = malloc(sizeof(*dig))) == NULL)
+	debug_return_ptr(NULL);
+    func->init(&dig->ctx);
+    dig->func = func;
+
+    debug_return_ptr(dig);
+}
+
+void
+sudo_digest_free_v1(struct sudo_digest *dig)
+{
+    debug_decl(sudo_digest_free, SUDO_DEBUG_UTIL);
+
+    free(dig);
+
+    debug_return;
+}
+
+void
+sudo_digest_reset_v1(struct sudo_digest *dig)
+{
+    debug_decl(sudo_digest_reset, SUDO_DEBUG_UTIL);
+
+    dig->func->init(&dig->ctx);
+
+    debug_return;
+}
+
+int
+sudo_digest_getlen_v1(int digest_type)
+{
+    debug_decl(sudo_digest_getlen, SUDO_DEBUG_UTIL);
+    int i;
+
+    for (i = 0; digest_functions[i].digest_len != 0; i++) {
+	if (digest_type == i)
+	    debug_return_int(digest_functions[i].digest_len);
+    }
+
+    debug_return_int(-1);
+}
+
+void
+sudo_digest_update_v1(struct sudo_digest *dig, const void *data, size_t len)
+{
+    debug_decl(sudo_digest_update, SUDO_DEBUG_UTIL);
+
+    dig->func->update(&dig->ctx, data, len);
+
+    debug_return;
+}
+
+void
+sudo_digest_final_v1(struct sudo_digest *dig, unsigned char *md)
+{
+    debug_decl(sudo_digest_final, SUDO_DEBUG_UTIL);
+
+    dig->func->final(md, &dig->ctx);
+
+    debug_return;
+}
diff --git a/lib/util/digest_gcrypt.c b/lib/util/digest_gcrypt.c
new file mode 100644
index 0000000..075e272
--- /dev/null
+++ b/lib/util/digest_gcrypt.c
@@ -0,0 +1,160 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2017-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <gcrypt.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_digest.h"
+
+#define SUDO_LIBGCRYPT_VERSION_MIN "1.3.0"
+
+struct sudo_digest {
+    int gcry_digest_type;
+    unsigned int digest_len;
+    gcry_md_hd_t ctx;
+};
+
+/* Map sudo digest type to gcrypt digest type. */
+static int
+sudo_digest_type_to_gcry(int digest_type)
+{
+    switch (digest_type) {
+    case SUDO_DIGEST_SHA224:
+	return GCRY_MD_SHA224;
+    case SUDO_DIGEST_SHA256:
+	return GCRY_MD_SHA256;
+    case SUDO_DIGEST_SHA384:
+	return GCRY_MD_SHA384;
+    case SUDO_DIGEST_SHA512:
+	return GCRY_MD_SHA512;
+    default:
+	return -1;
+    }
+}
+
+struct sudo_digest *
+sudo_digest_alloc_v1(int digest_type)
+{
+    debug_decl(sudo_digest_alloc, SUDO_DEBUG_UTIL);
+    static bool initialized = false;
+    struct sudo_digest *dig;
+    int gcry_digest_type;
+
+    if (!initialized) {
+	if (!gcry_check_version(SUDO_LIBGCRYPT_VERSION_MIN)) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"libgcrypt too old (need %s, have %s)",
+		SUDO_LIBGCRYPT_VERSION_MIN, gcry_check_version(NULL));
+	    debug_return_ptr(NULL);
+	}
+	gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
+	initialized = true;
+    }
+
+    gcry_digest_type = sudo_digest_type_to_gcry(digest_type);
+    if (gcry_digest_type == -1) {
+	errno = EINVAL;
+	debug_return_ptr(NULL);
+    }
+
+    if ((dig = malloc(sizeof(*dig))) == NULL)
+	debug_return_ptr(NULL);
+    dig->gcry_digest_type = gcry_digest_type;
+    dig->digest_len = gcry_md_get_algo_dlen(gcry_digest_type);
+
+    if (gcry_md_open(&dig->ctx, gcry_digest_type, 0) != 0) {
+	free(dig);
+	debug_return_ptr(NULL);
+    }
+
+    debug_return_ptr(dig);
+}
+
+void
+sudo_digest_free_v1(struct sudo_digest *dig)
+{
+    debug_decl(sudo_digest_free, SUDO_DEBUG_UTIL);
+
+    if (dig != NULL) {
+	gcry_md_close(dig->ctx);
+	free(dig);
+    }
+
+    debug_return;
+}
+
+void
+sudo_digest_reset_v1(struct sudo_digest *dig)
+{
+    debug_decl(sudo_digest_reset, SUDO_DEBUG_UTIL);
+
+    gcry_md_reset(dig->ctx);
+
+    debug_return;
+}
+
+int
+sudo_digest_getlen_v1(int digest_type)
+{
+    debug_decl(sudo_digest_getlen, SUDO_DEBUG_UTIL);
+    int gcry_digest_type;
+
+    gcry_digest_type = sudo_digest_type_to_gcry(digest_type);
+    if (gcry_digest_type == -1)
+	debug_return_int(-1);
+
+    debug_return_int(gcry_md_get_algo_dlen(gcry_digest_type));
+}
+
+void
+sudo_digest_update_v1(struct sudo_digest *dig, const void *data, size_t len)
+{
+    debug_decl(sudo_digest_update, SUDO_DEBUG_UTIL);
+
+    gcry_md_write(dig->ctx, data, len);
+
+    debug_return;
+}
+
+void
+sudo_digest_final_v1(struct sudo_digest *dig, unsigned char *md)
+{
+    debug_decl(sudo_digest_final, SUDO_DEBUG_UTIL);
+
+    gcry_md_final(dig->ctx);
+    memcpy(md, gcry_md_read(dig->ctx, 0), dig->digest_len);
+
+    debug_return;
+}
diff --git a/lib/util/digest_openssl.c b/lib/util/digest_openssl.c
new file mode 100644
index 0000000..20be734
--- /dev/null
+++ b/lib/util/digest_openssl.c
@@ -0,0 +1,152 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <errno.h>
+
+#if defined(HAVE_WOLFSSL)
+# include <wolfssl/options.h>
+#endif
+#include <openssl/evp.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_digest.h"
+
+struct sudo_digest {
+    EVP_MD_CTX *ctx;
+    const EVP_MD *md;
+};
+
+static const EVP_MD *
+sudo_digest_type_to_md(int digest_type)
+{
+    const EVP_MD *md = NULL;
+    debug_decl(sudo_digest_type_to_md, SUDO_DEBUG_UTIL);
+
+    switch (digest_type) {
+    case SUDO_DIGEST_SHA224:
+	md = EVP_sha224();
+	break;
+    case SUDO_DIGEST_SHA256:
+	md = EVP_sha256();
+	break;
+    case SUDO_DIGEST_SHA384:
+	md = EVP_sha384();
+	break;
+    case SUDO_DIGEST_SHA512:
+	md = EVP_sha512();
+	break;
+    default:
+	errno = EINVAL;
+	break;
+    }
+    debug_return_const_ptr(md);
+}
+
+struct sudo_digest *
+sudo_digest_alloc_v1(int digest_type)
+{
+    struct sudo_digest *dig;
+    EVP_MD_CTX *mdctx = NULL;
+    const EVP_MD *md;
+    debug_decl(sudo_digest_alloc, SUDO_DEBUG_UTIL);
+
+    md = sudo_digest_type_to_md(digest_type);
+    if (md == NULL)
+	goto bad;
+
+    mdctx = EVP_MD_CTX_new();
+    if (mdctx == NULL || !EVP_DigestInit_ex(mdctx, md, NULL))
+	goto bad;
+
+    if ((dig = malloc(sizeof(*dig))) == NULL)
+	goto bad;
+    dig->md = md;
+    dig->ctx = mdctx;
+
+    debug_return_ptr(dig);
+bad:
+    EVP_MD_CTX_free(mdctx);
+    debug_return_ptr(NULL);
+}
+
+void
+sudo_digest_free_v1(struct sudo_digest *dig)
+{
+    debug_decl(sudo_digest_free, SUDO_DEBUG_UTIL);
+
+    if (dig != NULL) {
+	EVP_MD_CTX_free(dig->ctx);
+	free(dig);
+    }
+
+    debug_return;
+}
+
+void
+sudo_digest_reset_v1(struct sudo_digest *dig)
+{
+    debug_decl(sudo_digest_reset, SUDO_DEBUG_UTIL);
+
+    /* These cannot fail. */
+    EVP_MD_CTX_reset(dig->ctx);
+    EVP_DigestInit_ex(dig->ctx, dig->md, NULL);
+
+    debug_return;
+}
+
+int
+sudo_digest_getlen_v1(int digest_type)
+{
+    const EVP_MD *md;
+    debug_decl(sudo_digest_getlen, SUDO_DEBUG_UTIL);
+
+    md = sudo_digest_type_to_md(digest_type);
+    if (md == NULL)
+	debug_return_int(-1);
+
+    debug_return_int(EVP_MD_size(md));
+}
+
+void
+sudo_digest_update_v1(struct sudo_digest *dig, const void *data, size_t len)
+{
+    debug_decl(sudo_digest_update, SUDO_DEBUG_UTIL);
+
+    EVP_DigestUpdate(dig->ctx, data, len);
+
+    debug_return;
+}
+
+void
+sudo_digest_final_v1(struct sudo_digest *dig, unsigned char *md)
+{
+    debug_decl(sudo_digest_final, SUDO_DEBUG_UTIL);
+
+    EVP_DigestFinal_ex(dig->ctx, md, NULL);
+
+    debug_return;
+}
diff --git a/lib/util/dup3.c b/lib/util/dup3.c
new file mode 100644
index 0000000..68d6ebf
--- /dev/null
+++ b/lib/util/dup3.c
@@ -0,0 +1,74 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_DUP3
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+int
+sudo_dup3(int oldd, int newd, int flags)
+{
+    int oflags;
+
+    if (oldd == newd) {
+	errno = EINVAL;
+	return -1;
+    }
+
+    if (dup2(oldd, newd) == -1)
+	return -1;
+
+    oflags = fcntl(newd, F_GETFL, 0);
+    if (oflags == -1)
+	goto bad;
+
+    if (ISSET(flags, O_NONBLOCK)) {
+	if (!ISSET(oflags, O_NONBLOCK)) {
+	    SET(oflags, O_NONBLOCK);
+	    if (fcntl(newd, F_SETFL, oflags) == -1)
+		goto bad;
+	}
+    } else {
+	if (ISSET(oflags, O_NONBLOCK)) {
+	    CLR(oflags, O_NONBLOCK);
+	    if (fcntl(newd, F_SETFL, oflags) == -1)
+		goto bad;
+	}
+    }
+    if (ISSET(flags, O_CLOEXEC)) {
+	if (fcntl(newd, F_SETFD, FD_CLOEXEC) == -1)
+	    goto bad;
+    }
+    return 0;
+bad:
+    close(newd);
+    return -1;
+}
+
+#endif /* HAVE_DUP3 */
diff --git a/lib/util/event.c b/lib/util/event.c
new file mode 100644
index 0000000..4192770
--- /dev/null
+++ b/lib/util/event.c
@@ -0,0 +1,862 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_debug.h"
+#include "sudo_event.h"
+#include "sudo_util.h"
+
+static void sudo_ev_init(struct sudo_event *ev, int fd, short events,
+    sudo_ev_callback_t callback, void *closure);
+
+/* Default event base when none is specified. */
+static struct sudo_event_base *default_base;
+
+/* We need the event base to be available from the signal handler. */
+static struct sudo_event_base *signal_base;
+
+/*
+ * Add an event to the base's active queue and mark it active.
+ * This is extern so sudo_ev_scan_impl() can call it.
+ */
+void
+sudo_ev_activate(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    TAILQ_INSERT_TAIL(&base->active, ev, active_entries);
+    SET(ev->flags, SUDO_EVQ_ACTIVE);
+}
+
+/*
+ * Remove an event from the base's active queue and mark it inactive.
+ */
+static inline void
+sudo_ev_deactivate(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    CLR(ev->flags, SUDO_EVQ_ACTIVE);
+    TAILQ_REMOVE(&base->active, ev, active_entries);
+}
+
+/*
+ * Clear out the base's active queue and mark all events as inactive.
+ */
+static void
+sudo_ev_deactivate_all(struct sudo_event_base *base)
+{
+    struct sudo_event *ev;
+    debug_decl(sudo_ev_deactivate_all, SUDO_DEBUG_EVENT);
+
+    while ((ev = TAILQ_FIRST(&base->active)) != NULL)
+	sudo_ev_deactivate(base, ev);
+
+    debug_return;
+}
+
+/*
+ * Activate all signal events for which the corresponding signal_pending[]
+ * flag is set.
+ */
+static void
+sudo_ev_activate_sigevents(struct sudo_event_base *base)
+{
+    struct sudo_event *ev;
+    sigset_t set, oset;
+    int i;
+    debug_decl(sudo_ev_activate_sigevents, SUDO_DEBUG_EVENT);
+
+    /*
+     * We treat this as a critical section since the signal handler
+     * could modify the siginfo[] entry.
+     */
+    sigfillset(&set);
+    sigprocmask(SIG_BLOCK, &set, &oset);
+    base->signal_caught = 0;
+    for (i = 0; i < NSIG; i++) {
+	if (!base->signal_pending[i])
+	    continue;
+	base->signal_pending[i] = 0;
+	TAILQ_FOREACH(ev, &base->signals[i], entries) {
+	    if (ISSET(ev->events, SUDO_EV_SIGINFO)) {
+		struct sudo_ev_siginfo_container *sc = ev->closure;
+		if (base->siginfo[i]->si_signo == 0) {
+		    /* No siginfo available. */
+		    sc->siginfo = NULL;
+		} else {
+		    sc->siginfo = (siginfo_t *)sc->si_buf;
+		    memcpy(sc->siginfo, base->siginfo[i], sizeof(siginfo_t));
+		}
+	    }
+	    /* Make event active. */
+	    ev->revents = ev->events & (SUDO_EV_SIGNAL|SUDO_EV_SIGINFO);
+	    TAILQ_INSERT_TAIL(&base->active, ev, active_entries);
+	    SET(ev->flags, SUDO_EVQ_ACTIVE);
+	}
+    }
+    sigprocmask(SIG_SETMASK, &oset, NULL);
+
+    debug_return;
+}
+
+/*
+ * Internal callback for SUDO_EV_SIGNAL and SUDO_EV_SIGINFO.
+ */
+static void
+signal_pipe_cb(int fd, int what, void *v)
+{
+    struct sudo_event_base *base = v;
+    unsigned char ch;
+    ssize_t nread;
+    debug_decl(signal_pipe_cb, SUDO_DEBUG_EVENT);
+
+    /*
+     * Drain signal_pipe, the signal handler updated base->signals_pending.
+     * Actual processing of signal events is done when poll/select is
+     * interrupted by a signal.
+     */
+    while ((nread = read(fd, &ch, 1)) > 0) {
+	sudo_debug_printf(SUDO_DEBUG_INFO,
+	    "%s: received signal %d", __func__, (int)ch);
+    }
+    if (nread == -1 && errno != EAGAIN) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "%s: error reading from signal pipe fd %d", __func__, fd);
+    }
+
+    /* Activate signal events. */
+    sudo_ev_activate_sigevents(base);
+
+    debug_return;
+}
+
+static int
+sudo_ev_base_init(struct sudo_event_base *base)
+{
+    int i;
+    debug_decl(sudo_ev_base_init, SUDO_DEBUG_EVENT);
+
+    TAILQ_INIT(&base->events);
+    TAILQ_INIT(&base->timeouts);
+    for (i = 0; i < NSIG; i++)
+	TAILQ_INIT(&base->signals[i]);
+    if (sudo_ev_base_alloc_impl(base) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR,
+	    "%s: unable to allocate impl base", __func__);
+	goto bad;
+    }
+    if (pipe2(base->signal_pipe, O_NONBLOCK|O_CLOEXEC) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR,
+	    "%s: unable to create signal pipe", __func__);
+	goto bad;
+    }
+    sudo_ev_init(&base->signal_event, base->signal_pipe[0],
+	SUDO_EV_READ|SUDO_EV_PERSIST, signal_pipe_cb, base);
+
+    debug_return_int(0);
+bad:
+    /* Note: signal_pipe[] not filled in. */
+    sudo_ev_base_free_impl(base);
+    debug_return_int(-1);
+}
+
+struct sudo_event_base *
+sudo_ev_base_alloc_v1(void)
+{
+    struct sudo_event_base *base;
+    debug_decl(sudo_ev_base_alloc, SUDO_DEBUG_EVENT);
+
+    base = calloc(1, sizeof(*base));
+    if (base == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: unable to allocate base", __func__);
+	debug_return_ptr(NULL);
+    }
+    if (sudo_ev_base_init(base) != 0) {
+	free(base);
+	debug_return_ptr(NULL);
+    }
+    debug_return_ptr(base);
+}
+
+void
+sudo_ev_base_free_v1(struct sudo_event_base *base)
+{
+    struct sudo_event *ev, *next;
+    int i;
+    debug_decl(sudo_ev_base_free, SUDO_DEBUG_EVENT);
+
+    if (base == NULL)
+	debug_return;
+
+    /* Reset the default base if necessary. */
+    if (default_base == base)
+	default_base = NULL;
+
+    /* Remove any existing events before freeing the base. */
+    TAILQ_FOREACH_SAFE(ev, &base->events, entries, next) {
+	sudo_ev_del(base, ev);
+	ev->base = NULL;
+    }
+    for (i = 0; i < NSIG; i++) {
+	TAILQ_FOREACH_SAFE(ev, &base->signals[i], entries, next) {
+	    sudo_ev_del(base, ev);
+	    ev->base = NULL;
+	}
+	free(base->siginfo[i]);
+	free(base->orig_handlers[i]);
+    }
+    sudo_ev_base_free_impl(base);
+    close(base->signal_pipe[0]);
+    close(base->signal_pipe[1]);
+    free(base);
+
+    debug_return;
+}
+
+void
+sudo_ev_base_setdef_v1(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_base_setdef, SUDO_DEBUG_EVENT);
+
+    default_base = base;
+
+    debug_return;
+}
+
+/*
+ * Clear and fill in a struct sudo_event.
+ */
+static void
+sudo_ev_init(struct sudo_event *ev, int fd, short events,
+    sudo_ev_callback_t callback, void *closure)
+{
+    debug_decl(sudo_ev_init, SUDO_DEBUG_EVENT);
+
+    memset(ev, 0, sizeof(*ev));
+    ev->fd = fd;
+    ev->events = events & SUDO_EV_MASK;
+    ev->pfd_idx = -1;
+    ev->callback = callback;
+    ev->closure = closure;
+
+    debug_return;
+}
+
+/*
+ * Set a pre-allocated struct sudo_event.
+ * Allocates space for siginfo_t for SUDO_EV_SIGINFO as needed.
+ */
+int
+sudo_ev_set_v1(struct sudo_event *ev, int fd, short events,
+    sudo_ev_callback_t callback, void *closure)
+{
+    debug_decl(sudo_ev_set, SUDO_DEBUG_EVENT);
+
+    /* For SUDO_EV_SIGINFO we use a container to store closure + siginfo_t */
+    if (ISSET(events, SUDO_EV_SIGINFO)) {
+	struct sudo_ev_siginfo_container *container =
+	    malloc(sizeof(*container) + sizeof(siginfo_t) - 1);
+	if (container == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: unable to allocate siginfo container", __func__);
+	    debug_return_int(-1);
+	}
+	container->closure = closure;
+	closure = container;
+    }
+    sudo_ev_init(ev, fd, events, callback, closure);
+
+    debug_return_int(0);
+}
+
+struct sudo_event *
+sudo_ev_alloc_v1(int fd, short events, sudo_ev_callback_t callback, void *closure)
+{
+    struct sudo_event *ev;
+    debug_decl(sudo_ev_alloc, SUDO_DEBUG_EVENT);
+
+    ev = malloc(sizeof(*ev));
+    if (ev == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: unable to allocate event", __func__);
+	debug_return_ptr(NULL);
+    }
+    if (sudo_ev_set(ev, fd, events, callback, closure) == -1) {
+	free(ev);
+	debug_return_ptr(NULL);
+    }
+    debug_return_ptr(ev);
+}
+
+void
+sudo_ev_free_v1(struct sudo_event *ev)
+{
+    debug_decl(sudo_ev_free, SUDO_DEBUG_EVENT);
+
+    if (ev == NULL)
+	debug_return;
+
+    /* Make sure ev is not in use before freeing it. */
+    if (ISSET(ev->flags, SUDO_EVQ_INSERTED))
+	(void)sudo_ev_del(NULL, ev);
+    if (ISSET(ev->events, SUDO_EV_SIGINFO))
+	free(ev->closure);
+    free(ev);
+
+    debug_return;
+}
+
+static void
+sudo_ev_handler(int signo, siginfo_t *info, void *context)
+{
+    unsigned char ch = (unsigned char)signo;
+
+    if (signal_base != NULL) {
+	/*
+	 * Update signals_pending[] and siginfo[].
+	 * All signals must be blocked any time siginfo[] is accessed.
+	 * If no siginfo available, zero out the struct in base.
+	 */
+	if (info == NULL)
+	    memset(signal_base->siginfo[signo], 0, sizeof(*info));
+	else
+	    memcpy(signal_base->siginfo[signo], info, sizeof(*info));
+	signal_base->signal_pending[signo] = 1;
+	signal_base->signal_caught = 1;
+
+	/* Wake up the other end of the pipe. */
+	ignore_result(write(signal_base->signal_pipe[1], &ch, 1));
+    }
+}
+
+static int
+sudo_ev_add_signal(struct sudo_event_base *base, struct sudo_event *ev,
+    bool tohead)
+{
+    const int signo = ev->fd;
+    debug_decl(sudo_ev_add_signal, SUDO_DEBUG_EVENT);
+
+    sudo_debug_printf(SUDO_DEBUG_INFO,
+	"%s: adding event %p to base %p, signal %d, events %d",
+	__func__, ev, base, signo, ev->events);
+    if (signo >= NSIG) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: signo %d larger than max %d", __func__, signo, NSIG - 1);
+	debug_return_int(-1);
+    }
+    if ((ev->events & ~(SUDO_EV_SIGNAL|SUDO_EV_SIGINFO|SUDO_EV_PERSIST)) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: invalid event set 0x%x", __func__, ev->events);
+	debug_return_int(-1);
+    }
+
+    /*
+     * Allocate base->siginfo[signo] and base->orig_handlers[signo] as needed.
+     */
+    if (base->siginfo[signo] == NULL) {
+	base->siginfo[signo] = malloc(sizeof(*base->siginfo[signo]));
+	if (base->siginfo[signo] == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: unable to allocate siginfo for signo %d",
+		__func__, signo);
+	    debug_return_int(-1);
+	}
+    }
+    if (base->orig_handlers[signo] == NULL) {
+	base->orig_handlers[signo] =
+	    malloc(sizeof(*base->orig_handlers[signo]));
+	if (base->orig_handlers[signo] == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: unable to allocate orig_handlers for signo %d",
+		__func__, signo);
+	    debug_return_int(-1);
+	}
+    }
+
+    /* Install signal handler as needed, saving the original value. */
+    if (TAILQ_EMPTY(&base->signals[signo])) {
+	struct sigaction sa;
+	memset(&sa, 0, sizeof(sa));
+	sigfillset(&sa.sa_mask);
+	sa.sa_flags = SA_RESTART|SA_SIGINFO;
+	sa.sa_sigaction = sudo_ev_handler;
+	if (sigaction(signo, &sa, base->orig_handlers[signo]) != 0) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: unable to install handler for signo %d", __func__, signo);
+	    debug_return_int(-1);
+	}
+	base->num_handlers++;
+    }
+
+    /*
+     * Insert signal event into the proper tail queue.
+     * Signal events are always persistent.
+     */
+    ev->base = base;
+    if (tohead) {
+	TAILQ_INSERT_HEAD(&base->signals[signo], ev, entries);
+    } else {
+	TAILQ_INSERT_TAIL(&base->signals[signo], ev, entries);
+    }
+    SET(ev->events, SUDO_EV_PERSIST);
+    SET(ev->flags, SUDO_EVQ_INSERTED);
+
+    /* Add the internal signal_pipe event on demand. */
+    if (!ISSET(base->signal_event.flags, SUDO_EVQ_INSERTED))
+	sudo_ev_add(base, &base->signal_event, NULL, true);
+
+    /* Update global signal base so handler to update signals_pending[] */
+    signal_base = base;
+
+    debug_return_int(0);
+}
+
+int
+sudo_ev_add_v1(struct sudo_event_base *base, struct sudo_event *ev,
+    const struct timeval *timo, bool tohead)
+{
+    struct timespec tsbuf, *ts = NULL;
+
+    if (timo != NULL) {
+	TIMEVAL_TO_TIMESPEC(timo, &tsbuf);
+	ts = &tsbuf;
+    }
+
+    return sudo_ev_add_v2(base, ev, ts, tohead);
+}
+
+int
+sudo_ev_add_v2(struct sudo_event_base *base, struct sudo_event *ev,
+    const struct timespec *timo, bool tohead)
+{
+    debug_decl(sudo_ev_add, SUDO_DEBUG_EVENT);
+
+    /* If no base specified, use existing or default base. */
+    if (base == NULL) {
+	if (ev->base != NULL) {
+	    base = ev->base;
+	} else if (default_base != NULL) {
+	    base = default_base;
+	} else {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR, "%s: no base specified",
+		__func__);
+	    debug_return_int(-1);
+	}
+    }
+
+    /* Only add new events to the events list. */
+    if (ISSET(ev->flags, SUDO_EVQ_INSERTED)) {
+	/* If event no longer has a timeout, remove from timeouts queue. */
+	if (timo == NULL && ISSET(ev->flags, SUDO_EVQ_TIMEOUTS)) {
+	    sudo_debug_printf(SUDO_DEBUG_INFO,
+		"%s: removing event %p from timeouts queue", __func__, ev);
+	    CLR(ev->flags, SUDO_EVQ_TIMEOUTS);
+	    TAILQ_REMOVE(&base->timeouts, ev, timeouts_entries);
+	}
+    } else {
+	/* Special handling for signal events. */
+	if (ev->events & (SUDO_EV_SIGNAL|SUDO_EV_SIGINFO))
+	    debug_return_int(sudo_ev_add_signal(base, ev, tohead));
+
+	/* Add event to the base. */
+	sudo_debug_printf(SUDO_DEBUG_INFO,
+	    "%s: adding event %p to base %p, fd %d, events %d",
+	    __func__, ev, base, ev->fd, ev->events);
+	if (ev->events & (SUDO_EV_READ|SUDO_EV_WRITE)) {
+	    if (sudo_ev_add_impl(base, ev) != 0)
+		debug_return_int(-1);
+	}
+	ev->base = base;
+	if (tohead) {
+	    TAILQ_INSERT_HEAD(&base->events, ev, entries);
+	} else {
+	    TAILQ_INSERT_TAIL(&base->events, ev, entries);
+	}
+	SET(ev->flags, SUDO_EVQ_INSERTED);
+    }
+    /* Timeouts can be changed for existing events. */
+    if (timo != NULL) {
+	struct sudo_event *evtmp;
+	if (ISSET(ev->flags, SUDO_EVQ_TIMEOUTS)) {
+	    /* Remove from timeouts list, then add back. */
+	    TAILQ_REMOVE(&base->timeouts, ev, timeouts_entries);
+	}
+	/* Convert to absolute time and insert in sorted order; O(n). */
+	sudo_gettime_mono(&ev->timeout);
+	sudo_timespecadd(&ev->timeout, timo, &ev->timeout);
+	TAILQ_FOREACH(evtmp, &base->timeouts, timeouts_entries) {
+	    if (sudo_timespeccmp(&ev->timeout, &evtmp->timeout, <))
+		break;
+	}
+	if (evtmp != NULL) {
+	    TAILQ_INSERT_BEFORE(evtmp, ev, timeouts_entries);
+	} else {
+	    TAILQ_INSERT_TAIL(&base->timeouts, ev, timeouts_entries);
+	}
+	SET(ev->flags, SUDO_EVQ_TIMEOUTS);
+    }
+    debug_return_int(0);
+}
+
+/*
+ * Remove an event from the base, if specified, or the base embedded
+ * in the event if not.  Note that there are multiple tail queues.
+ */
+int
+sudo_ev_del_v1(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    debug_decl(sudo_ev_del, SUDO_DEBUG_EVENT);
+
+    /* Make sure event is really in the queue. */
+    if (!ISSET(ev->flags, SUDO_EVQ_INSERTED)) {
+	sudo_debug_printf(SUDO_DEBUG_INFO, "%s: event %p not in queue",
+	    __func__, ev);
+	debug_return_int(0);
+    }
+
+    /* Check for event base mismatch, if one is specified. */
+    if (base == NULL) {
+	if (ev->base == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR, "%s: no base specified",
+		__func__);
+	    debug_return_int(-1);
+	}
+	base = ev->base;
+    } else if (base != ev->base) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR, "%s: mismatch base %p, ev->base %p",
+	    __func__, base, ev->base);
+	debug_return_int(-1);
+    }
+
+    if (ev->events & (SUDO_EV_SIGNAL|SUDO_EV_SIGINFO)) {
+	const int signo = ev->fd;
+
+	sudo_debug_printf(SUDO_DEBUG_INFO,
+	    "%s: removing event %p from base %p, signo %d, events %d",
+	    __func__, ev, base, signo, ev->events);
+
+	/* Unlink from signal event list. */
+	TAILQ_REMOVE(&base->signals[signo], ev, entries);
+	if (TAILQ_EMPTY(&base->signals[signo])) {
+	    if (sigaction(signo, base->orig_handlers[signo], NULL) != 0) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "%s: unable to restore handler for signo %d",
+		    __func__, signo);
+		debug_return_int(-1);
+	    }
+	    base->num_handlers--;
+	}
+	if (base->num_handlers == 0) {
+	    /* No registered signal events, remove internal event. */
+	    sudo_ev_del(base, &base->signal_event);
+	}
+    } else {
+	sudo_debug_printf(SUDO_DEBUG_INFO,
+	    "%s: removing event %p from base %p, fd %d, events %d",
+	    __func__, ev, base, ev->fd, ev->events);
+
+	/* Call backend. */
+	if (ev->events & (SUDO_EV_READ|SUDO_EV_WRITE)) {
+	    if (sudo_ev_del_impl(base, ev) != 0)
+		debug_return_int(-1);
+	}
+
+	/* Unlink from event list. */
+	TAILQ_REMOVE(&base->events, ev, entries);
+
+	/* Unlink from timeouts list. */
+	if (ISSET(ev->flags, SUDO_EVQ_TIMEOUTS))
+	    TAILQ_REMOVE(&base->timeouts, ev, timeouts_entries);
+    }
+
+    /* Unlink from active list. */
+    if (ISSET(ev->flags, SUDO_EVQ_ACTIVE))
+	TAILQ_REMOVE(&base->active, ev, active_entries);
+
+    /* Mark event unused. */
+    ev->flags = 0;
+    ev->pfd_idx = -1;
+
+    debug_return_int(0);
+}
+
+int
+sudo_ev_dispatch_v1(struct sudo_event_base *base)
+{
+    return sudo_ev_loop_v1(base, 0);
+}
+
+/*
+ * Run main event loop.
+ * Returns 0 on success, 1 if no events registered  and -1 on error 
+ */
+int
+sudo_ev_loop_v1(struct sudo_event_base *base, int flags)
+{
+    struct timespec now;
+    struct sudo_event *ev;
+    int nready, rc = 0;
+    debug_decl(sudo_ev_loop, SUDO_DEBUG_EVENT);
+
+    /*
+     * If sudo_ev_loopexit() was called when events were not running
+     * the next invocation of sudo_ev_loop() only runs once.
+     * All other base flags are ignored unless we are running events.
+     * Note that SUDO_EVLOOP_ONCE and SUDO_EVBASE_LOOPONCE are equivalent.
+     */
+    base->flags |= (flags & SUDO_EVLOOP_ONCE);
+    base->flags &= (SUDO_EVBASE_LOOPEXIT|SUDO_EVBASE_LOOPONCE);
+
+    for (;;) {
+rescan:
+	/* Make sure we have some events. */
+	if (TAILQ_EMPTY(&base->events)) {
+	    rc = 1;
+	    break;
+	}
+
+	/* Call backend to scan for I/O events. */
+	TAILQ_INIT(&base->active);
+	nready = sudo_ev_scan_impl(base, flags);
+	switch (nready) {
+	case -1:
+	    if (errno == ENOMEM || errno == EAGAIN)
+		continue;
+	    if (errno == EINTR) {
+		/* Interrupted by signal, check for sigevents. */
+		if (base->signal_caught) {
+		    signal_pipe_cb(base->signal_pipe[0], SUDO_EV_READ, base);
+		    break;
+		}
+		continue;
+	    }
+	    rc = -1;
+	    goto done;
+	case 0:
+	    /* Timed out, activate timeout events. */
+	    sudo_gettime_mono(&now);
+	    while ((ev = TAILQ_FIRST(&base->timeouts)) != NULL) {
+		if (sudo_timespeccmp(&ev->timeout, &now, >))
+		    break;
+		/* Remove from timeouts list. */
+		CLR(ev->flags, SUDO_EVQ_TIMEOUTS);
+		TAILQ_REMOVE(&base->timeouts, ev, timeouts_entries);
+		/* Make event active. */
+		ev->revents = SUDO_EV_TIMEOUT;
+		TAILQ_INSERT_TAIL(&base->active, ev, active_entries);
+		SET(ev->flags, SUDO_EVQ_ACTIVE);
+	    }
+	    if (ISSET(flags, SUDO_EVLOOP_NONBLOCK)) {
+		/* If nonblocking, return immediately if no active events. */
+		if (TAILQ_EMPTY(&base->active))
+		    goto done;
+	    }
+	    break;
+	default:
+	    /* I/O events active, sudo_ev_scan_impl() already added them. */
+	    break;
+	}
+
+	/*
+	 * Service each event in the active queue.
+	 * We store the current event pointer in the base so that
+	 * it can be cleared by sudo_ev_del().  This prevents a use
+	 * after free if the callback frees its own event.
+	 */
+	while ((ev = TAILQ_FIRST(&base->active)) != NULL) {
+	    /* Pop first event off the active queue. */
+	    sudo_ev_deactivate(base, ev);
+	    /* Remove from base unless persistent. */
+	    if (!ISSET(ev->events, SUDO_EV_PERSIST))
+		sudo_ev_del(base, ev);
+	    ev->callback(ev->fd, ev->revents,
+		ev->closure == sudo_ev_self_cbarg() ? ev : ev->closure);
+	    if (ISSET(base->flags, SUDO_EVBASE_LOOPBREAK)) {
+		/* Stop processing events immediately. */
+		SET(base->flags, SUDO_EVBASE_GOT_BREAK);
+		sudo_ev_deactivate_all(base);
+		goto done;
+	    }
+	    if (ISSET(base->flags, SUDO_EVBASE_LOOPCONT)) {
+		/* Rescan events and start polling again. */
+		CLR(base->flags, SUDO_EVBASE_LOOPCONT);
+		sudo_ev_deactivate_all(base);
+		goto rescan;
+	    }
+	}
+	if (ISSET(base->flags, SUDO_EVBASE_LOOPONCE)) {
+	    /* SUDO_EVBASE_LOOPEXIT is always set w/ SUDO_EVBASE_LOOPONCE */
+	    if (ISSET(base->flags, SUDO_EVBASE_LOOPEXIT))
+		SET(base->flags, SUDO_EVBASE_GOT_EXIT);
+	    sudo_ev_deactivate_all(base);
+	    break;
+	}
+    }
+done:
+    base->flags &= SUDO_EVBASE_GOT_MASK;
+    debug_return_int(rc);
+}
+
+void
+sudo_ev_loopexit_v1(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_loopexit, SUDO_DEBUG_EVENT);
+
+    if (base == NULL) {
+	if ((base = default_base) == NULL)
+	    debug_return;
+    }
+
+    /* SUDO_EVBASE_LOOPBREAK trumps SUDO_EVBASE_LOOPEXIT */
+    if (!ISSET(base->flags, SUDO_EVBASE_LOOPBREAK)) {
+	/* SUDO_EVBASE_LOOPEXIT trumps SUDO_EVBASE_LOOPCONT */
+	CLR(base->flags, SUDO_EVBASE_LOOPCONT);
+	SET(base->flags, (SUDO_EVBASE_LOOPEXIT|SUDO_EVBASE_LOOPONCE));
+    }
+    debug_return;
+}
+
+void
+sudo_ev_loopbreak_v1(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_loopbreak, SUDO_DEBUG_EVENT);
+
+    if (base == NULL) {
+	if ((base = default_base) == NULL)
+	    debug_return;
+    }
+
+    /* SUDO_EVBASE_LOOPBREAK trumps SUDO_EVBASE_LOOP{CONT,EXIT,ONCE}. */
+    CLR(base->flags, (SUDO_EVBASE_LOOPCONT|SUDO_EVBASE_LOOPEXIT|SUDO_EVBASE_LOOPONCE));
+    SET(base->flags, SUDO_EVBASE_LOOPBREAK);
+    debug_return;
+}
+
+void
+sudo_ev_loopcontinue_v1(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_loopcontinue, SUDO_DEBUG_EVENT);
+
+    if (base == NULL) {
+	if ((base = default_base) == NULL)
+	    debug_return;
+    }
+
+    /* SUDO_EVBASE_LOOP{BREAK,EXIT} trumps SUDO_EVBASE_LOOPCONT */
+    if (!ISSET(base->flags, SUDO_EVBASE_LOOPONCE|SUDO_EVBASE_LOOPBREAK)) {
+	SET(base->flags, SUDO_EVBASE_LOOPCONT);
+    }
+    debug_return;
+}
+
+bool
+sudo_ev_got_exit_v1(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_got_exit, SUDO_DEBUG_EVENT);
+
+    if (base == NULL) {
+	if ((base = default_base) == NULL)
+	    debug_return_bool(false);
+    }
+    debug_return_bool(ISSET(base->flags, SUDO_EVBASE_GOT_EXIT));
+}
+
+bool
+sudo_ev_got_break_v1(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_got_break, SUDO_DEBUG_EVENT);
+
+    if (base == NULL) {
+	if ((base = default_base) == NULL)
+	    debug_return_bool(false);
+    }
+    debug_return_bool(ISSET(base->flags, SUDO_EVBASE_GOT_BREAK));
+}
+
+int
+sudo_ev_get_timeleft_v1(struct sudo_event *ev, struct timeval *tv)
+{
+    struct timespec ts;
+    int ret;
+
+    ret = sudo_ev_get_timeleft_v2(ev, &ts);
+    TIMESPEC_TO_TIMEVAL(tv, &ts);
+
+    return ret;
+}
+
+int
+sudo_ev_get_timeleft_v2(struct sudo_event *ev, struct timespec *ts)
+{
+    debug_decl(sudo_ev_get_timeleft, SUDO_DEBUG_EVENT);
+
+    sudo_timespecclear(ts);
+    if (sudo_ev_pending_v1(ev, SUDO_EV_TIMEOUT, ts) != SUDO_EV_TIMEOUT)
+	debug_return_int(-1);
+    debug_return_int(0);
+}
+
+int
+sudo_ev_pending_v1(struct sudo_event *ev, short events, struct timespec *ts)
+{
+    int ret;
+    debug_decl(sudo_ev_pending, SUDO_DEBUG_EVENT);
+
+    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: event %p, flags 0x%x, events 0x%x",
+	__func__, ev, ev->flags, ev->events);
+
+    if (!ISSET(ev->flags, SUDO_EVQ_INSERTED))
+	debug_return_int(0);
+
+    ret = ev->events & events;
+    CLR(ret, SUDO_EV_TIMEOUT);
+    if (ISSET(ev->flags, SUDO_EVQ_TIMEOUTS) && ISSET(events, SUDO_EV_TIMEOUT)) {
+	ret |= SUDO_EV_TIMEOUT;
+	if (ts != NULL) {
+	    struct timespec now;
+
+	    sudo_gettime_mono(&now);
+	    sudo_timespecsub(&ev->timeout, &now, ts);
+	    if (ts->tv_sec < 0)
+		sudo_timespecclear(ts);
+	}
+    }
+
+    debug_return_int(ret);
+}
diff --git a/lib/util/event_poll.c b/lib/util/event_poll.c
new file mode 100644
index 0000000..271719a
--- /dev/null
+++ b/lib/util/event_poll.c
@@ -0,0 +1,227 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/resource.h>
+
+#include <stdlib.h>
+#include <poll.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+#include "sudo_debug.h"
+#include "sudo_event.h"
+
+int
+sudo_ev_base_alloc_impl(struct sudo_event_base *base)
+{
+    int i;
+    debug_decl(sudo_ev_base_alloc_impl, SUDO_DEBUG_EVENT);
+
+    base->pfd_high = -1;
+    base->pfd_max = 32;
+    base->pfds = reallocarray(NULL, base->pfd_max, sizeof(struct pollfd));
+    if (base->pfds == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: unable to allocate %d pollfds", __func__, base->pfd_max);
+	base->pfd_max = 0;
+	debug_return_int(-1);
+    }
+    for (i = 0; i < base->pfd_max; i++) {
+	base->pfds[i].fd = -1;
+    }
+
+    debug_return_int(0);
+}
+
+void
+sudo_ev_base_free_impl(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_base_free_impl, SUDO_DEBUG_EVENT);
+    free(base->pfds);
+    debug_return;
+}
+
+int
+sudo_ev_add_impl(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    static int nofile_max = -1;
+    struct pollfd *pfd;
+    debug_decl(sudo_ev_add_impl, SUDO_DEBUG_EVENT);
+
+    if (nofile_max == -1) {
+	struct rlimit rlim;
+	if (getrlimit(RLIMIT_NOFILE, &rlim) == 0) {
+	    nofile_max = rlim.rlim_cur;
+	}
+    }
+
+    /* If out of space in pfds array, realloc. */
+    if (base->pfd_free == base->pfd_max) {
+	struct pollfd *pfds;
+	int i, new_max;
+
+	/* Don't allow pfd_max to go over RLIM_NOFILE */
+	new_max = base->pfd_max * 2;
+	if (new_max > nofile_max)
+	    new_max = nofile_max;
+	if (base->pfd_free == new_max) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: out of fds (max %d)", __func__, nofile_max);
+	    debug_return_int(-1);
+	}
+	sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+	    "%s: pfd_max %d -> %d", __func__, base->pfd_max, new_max);
+	pfds = reallocarray(base->pfds, new_max, sizeof(struct pollfd));
+	if (pfds == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: unable to allocate %d pollfds", __func__, new_max);
+	    debug_return_int(-1);
+	}
+	base->pfds = pfds;
+	base->pfd_max = new_max;
+	for (i = base->pfd_free; i < base->pfd_max; i++) {
+	    base->pfds[i].fd = -1;
+	}
+    }
+
+    /* Fill in pfd entry. */
+    sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	"%s: choosing free slot %d", __func__, base->pfd_free);
+    ev->pfd_idx = base->pfd_free;
+    pfd = &base->pfds[ev->pfd_idx];
+    pfd->fd = ev->fd;
+    pfd->events = 0;
+    if (ISSET(ev->events, SUDO_EV_READ))
+	pfd->events |= POLLIN;
+    if (ISSET(ev->events, SUDO_EV_WRITE))
+	pfd->events |= POLLOUT;
+
+    /* Update pfd_high and pfd_free. */
+    if (ev->pfd_idx > base->pfd_high)
+	base->pfd_high = ev->pfd_idx;
+    for (;;) {
+	if (++base->pfd_free == base->pfd_max)
+	    break;
+	if (base->pfds[base->pfd_free].fd == -1)
+	    break;
+    }
+
+    debug_return_int(0);
+}
+
+int
+sudo_ev_del_impl(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    debug_decl(sudo_ev_del_impl, SUDO_DEBUG_EVENT);
+
+    /* Mark pfd entry unused, add to free list and adjust high slot. */
+    base->pfds[ev->pfd_idx].fd = -1;
+    if (ev->pfd_idx < base->pfd_free) {
+	base->pfd_free = ev->pfd_idx;
+	sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	    "%s: new free slot %d", __func__, base->pfd_free);
+    }
+    while (base->pfd_high >= 0 && base->pfds[base->pfd_high].fd == -1)
+	base->pfd_high--;
+
+    debug_return_int(0);
+}
+
+#ifdef HAVE_PPOLL
+static int
+sudo_ev_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timo)
+{
+    return ppoll(fds, nfds, timo, NULL);
+}
+#else
+static int
+sudo_ev_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timo)
+{
+    const int timeout =
+	timo ? (timo->tv_sec * 1000) + (timo->tv_nsec / 1000000) : -1;
+
+    return poll(fds, nfds, timeout);
+}
+#endif /* HAVE_PPOLL */
+
+int
+sudo_ev_scan_impl(struct sudo_event_base *base, int flags)
+{
+    struct timespec now, ts, *timeout;
+    struct sudo_event *ev;
+    int nready;
+    debug_decl(sudo_ev_scan_impl, SUDO_DEBUG_EVENT);
+
+    if ((ev = TAILQ_FIRST(&base->timeouts)) != NULL) {
+	sudo_gettime_mono(&now);
+	sudo_timespecsub(&ev->timeout, &now, &ts);
+	if (ts.tv_sec < 0)
+	    sudo_timespecclear(&ts);
+	timeout = &ts;
+    } else {
+	if (ISSET(flags, SUDO_EVLOOP_NONBLOCK)) {
+	    sudo_timespecclear(&ts);
+	    timeout = &ts;
+	} else {
+	    timeout = NULL;
+	}
+    }
+
+    nready = sudo_ev_poll(base->pfds, base->pfd_high + 1, timeout);
+    switch (nready) {
+    case -1:
+	/* Error: EINTR (signal) or EINVAL (nfds > RLIMIT_NOFILE) */
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	    "sudo_ev_poll");
+	break;
+    case 0:
+	/* Front end will activate timeout events. */
+	sudo_debug_printf(SUDO_DEBUG_INFO, "%s: timeout", __func__);
+	break;
+    default:
+	/* Activate each I/O event that fired. */
+	sudo_debug_printf(SUDO_DEBUG_INFO, "%s: %d fds ready", __func__,
+	    nready);
+	TAILQ_FOREACH(ev, &base->events, entries) {
+	    if (ev->pfd_idx != -1 && base->pfds[ev->pfd_idx].revents) {
+		int what = 0;
+		if (base->pfds[ev->pfd_idx].revents & (POLLIN|POLLHUP|POLLNVAL|POLLERR))
+		    what |= (ev->events & SUDO_EV_READ);
+		if (base->pfds[ev->pfd_idx].revents & (POLLOUT|POLLHUP|POLLNVAL|POLLERR))
+		    what |= (ev->events & SUDO_EV_WRITE);
+		/* Make event active. */
+		sudo_debug_printf(SUDO_DEBUG_DEBUG,
+		    "%s: polled fd %d, events %d, activating %p",
+		    __func__, ev->fd, what, ev);
+		ev->revents = what;
+		sudo_ev_activate(base, ev);
+	    }
+	}
+	break;
+    }
+    debug_return_int(nready);
+}
diff --git a/lib/util/event_select.c b/lib/util/event_select.c
new file mode 100644
index 0000000..8d3e8a9
--- /dev/null
+++ b/lib/util/event_select.c
@@ -0,0 +1,250 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/param.h>		/* for howmany() on Linux */
+#include <sys/time.h>
+#ifdef HAVE_SYS_SYSMACROS_H
+# include <sys/sysmacros.h>	/* for howmany() on Solaris */
+#endif
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif /* HAVE_SYS_SELECT_H */
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+#include "sudo_debug.h"
+#include "sudo_event.h"
+
+int
+sudo_ev_base_alloc_impl(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_base_alloc_impl, SUDO_DEBUG_EVENT);
+
+    base->maxfd = NFDBITS - 1;
+    base->readfds_in = calloc(1, sizeof(fd_mask));
+    base->writefds_in = calloc(1, sizeof(fd_mask));
+    base->readfds_out = calloc(1, sizeof(fd_mask));
+    base->writefds_out = calloc(1, sizeof(fd_mask));
+
+    if (base->readfds_in == NULL || base->writefds_in == NULL ||
+	base->readfds_out == NULL || base->writefds_out == NULL) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "%s: unable to calloc(1, %zu)", __func__, sizeof(fd_mask));
+	sudo_ev_base_free_impl(base);
+	debug_return_int(-1);
+    }
+    debug_return_int(0);
+}
+
+void
+sudo_ev_base_free_impl(struct sudo_event_base *base)
+{
+    debug_decl(sudo_ev_base_free_impl, SUDO_DEBUG_EVENT);
+    free(base->readfds_in);
+    free(base->writefds_in);
+    free(base->readfds_out);
+    free(base->writefds_out);
+    debug_return;
+}
+
+int
+sudo_ev_add_impl(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    debug_decl(sudo_ev_add_impl, SUDO_DEBUG_EVENT);
+
+    /* If out of space in fd sets, realloc. */
+    if (ev->fd > base->maxfd) {
+	const int o = (base->maxfd + 1) / NFDBITS;
+	const int n = howmany(ev->fd + 1, NFDBITS);
+	const size_t used_bytes = o * sizeof(fd_mask);
+	const size_t new_bytes = (n - o) * sizeof(fd_mask);
+	fd_set *rfds_in, *wfds_in, *rfds_out, *wfds_out;
+
+	rfds_in = reallocarray(base->readfds_in, n, sizeof(fd_mask));
+	wfds_in = reallocarray(base->writefds_in, n, sizeof(fd_mask));
+	rfds_out = reallocarray(base->readfds_out, n, sizeof(fd_mask));
+	wfds_out = reallocarray(base->writefds_out, n, sizeof(fd_mask));
+	if (rfds_in == NULL || wfds_in == NULL ||
+	    rfds_out == NULL || wfds_out == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s: unable to reallocarray(%d, %zu)",
+		__func__, n, sizeof(fd_mask));
+	    free(rfds_in);
+	    free(wfds_in);
+	    free(rfds_out);
+	    free(wfds_out);
+	    debug_return_int(-1);
+	}
+
+	/* Clear newly allocated space. */
+	memset((char *)rfds_in + used_bytes, 0, new_bytes);
+	memset((char *)wfds_in + used_bytes, 0, new_bytes);
+	memset((char *)rfds_out + used_bytes, 0, new_bytes);
+	memset((char *)wfds_out + used_bytes, 0, new_bytes);
+
+	/* Update base. */
+	base->readfds_in = rfds_in;
+	base->writefds_in = wfds_in;
+	base->readfds_out = rfds_out;
+	base->writefds_out = wfds_out;
+	base->maxfd = (n * NFDBITS) - 1;
+    }
+
+    /* Set events and adjust high fd as needed. */
+    if (ISSET(ev->events, SUDO_EV_READ)) {
+	sudo_debug_printf(SUDO_DEBUG_DEBUG, "%s: added fd %d to readfs",
+	    __func__, ev->fd);
+	FD_SET(ev->fd, (fd_set *)base->readfds_in);
+    }
+    if (ISSET(ev->events, SUDO_EV_WRITE)) {
+	sudo_debug_printf(SUDO_DEBUG_DEBUG, "%s: added fd %d to writefds",
+	    __func__, ev->fd);
+	FD_SET(ev->fd, (fd_set *)base->writefds_in);
+    }
+    if (ev->fd > base->highfd)
+	base->highfd = ev->fd;
+
+    debug_return_int(0);
+}
+
+int
+sudo_ev_del_impl(struct sudo_event_base *base, struct sudo_event *ev)
+{
+    debug_decl(sudo_ev_del_impl, SUDO_DEBUG_EVENT);
+
+    /* Remove from readfds and writefds and adjust high fd. */
+    if (ISSET(ev->events, SUDO_EV_READ)) {
+	sudo_debug_printf(SUDO_DEBUG_DEBUG, "%s: removed fd %d from readfds",
+	    __func__, ev->fd);
+	FD_CLR(ev->fd, (fd_set *)base->readfds_in);
+    }
+    if (ISSET(ev->events, SUDO_EV_WRITE)) {
+	sudo_debug_printf(SUDO_DEBUG_DEBUG, "%s: removed fd %d from writefds",
+	    __func__, ev->fd);
+	FD_CLR(ev->fd, (fd_set *)base->writefds_in);
+    }
+    if (base->highfd == ev->fd) {
+	for (;;) {
+	    if (FD_ISSET(base->highfd, (fd_set *)base->readfds_in) ||
+		FD_ISSET(base->highfd, (fd_set *)base->writefds_in))
+		break;
+	    if (--base->highfd < 0)
+		break;
+	}
+    }
+
+    debug_return_int(0);
+}
+
+#ifdef HAVE_PSELECT
+static int
+sudo_ev_select(int nfds, fd_set *readfds, fd_set *writefds,
+    fd_set *exceptfds, const struct timespec *timeout)
+{
+    return pselect(nfds, readfds, writefds, exceptfds, timeout, NULL);
+}
+#else
+static int
+sudo_ev_select(int nfds, fd_set *readfds, fd_set *writefds,
+    fd_set *exceptfds, const struct timespec *timeout)
+{
+    struct timeval tvbuf, *tv = NULL;
+
+    if (timeout != NULL) {
+	TIMESPEC_TO_TIMEVAL(&tvbuf, timeout);
+	tv = &tvbuf;
+    }
+    return select(nfds, readfds, writefds, exceptfds, tv);
+}
+#endif /* HAVE_PSELECT */
+
+int
+sudo_ev_scan_impl(struct sudo_event_base *base, int flags)
+{
+    struct timespec now, ts, *timeout;
+    struct sudo_event *ev;
+    size_t setsize;
+    int nready;
+    debug_decl(sudo_ev_loop, SUDO_DEBUG_EVENT);
+
+    if ((ev = TAILQ_FIRST(&base->timeouts)) != NULL) {
+	sudo_gettime_mono(&now);
+	sudo_timespecsub(&ev->timeout, &now, &ts);
+	if (ts.tv_sec < 0)
+	    sudo_timespecclear(&ts);
+	timeout = &ts;
+    } else {
+	if (ISSET(flags, SUDO_EVLOOP_NONBLOCK)) {
+	    sudo_timespecclear(&ts);
+	    timeout = &ts;
+	} else {
+	    timeout = NULL;
+	}
+    }
+
+    /* select() overwrites readfds/writefds so make a copy. */
+    setsize = howmany(base->highfd + 1, NFDBITS) * sizeof(fd_mask);
+    memcpy(base->readfds_out, base->readfds_in, setsize);
+    memcpy(base->writefds_out, base->writefds_in, setsize);
+
+    sudo_debug_printf(SUDO_DEBUG_DEBUG, "%s: select high fd %d",
+	__func__, base->highfd);
+    nready = sudo_ev_select(base->highfd + 1, base->readfds_out,
+	base->writefds_out, NULL, timeout);
+    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: %d fds ready", __func__, nready);
+    switch (nready) {
+    case -1:
+	/* Error or interrupted by signal. */
+	break;
+    case 0:
+	/* Front end will activate timeout events. */
+	break;
+    default:
+	/* Activate each I/O event that fired. */
+	TAILQ_FOREACH(ev, &base->events, entries) {
+	    if (ev->fd >= 0) {
+		int what = 0;
+		if (FD_ISSET(ev->fd, (fd_set *)base->readfds_out))
+		    what |= (ev->events & SUDO_EV_READ);
+		if (FD_ISSET(ev->fd, (fd_set *)base->writefds_out))
+		    what |= (ev->events & SUDO_EV_WRITE);
+		if (what != 0) {
+		    /* Make event active. */
+		    sudo_debug_printf(SUDO_DEBUG_DEBUG,
+			"%s: selected fd %d, events %d, activating %p",
+			__func__, ev->fd, what, ev);
+		    ev->revents = what;
+		    sudo_ev_activate(base, ev);
+		}
+	    }
+	}
+	break;
+    }
+    debug_return_int(nready);
+}
diff --git a/lib/util/explicit_bzero.c b/lib/util/explicit_bzero.c
new file mode 100644
index 0000000..a7defbd
--- /dev/null
+++ b/lib/util/explicit_bzero.c
@@ -0,0 +1,77 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#define __STDC_WANT_LIB_EXT1__ 1	/* for memset_s() */
+
+#include <string.h>
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_EXPLICIT_BZERO
+
+# if defined(HAVE_EXPLICIT_MEMSET)
+void
+sudo_explicit_bzero(void *s, size_t n)
+{
+    explicit_memset(s, 0, n);
+}
+# elif defined(HAVE_MEMSET_EXPLICIT)
+void
+sudo_explicit_bzero(void *s, size_t n)
+{
+    memset_explicit(s, 0, n);
+}
+# elif defined(HAVE_MEMSET_S)
+void
+sudo_explicit_bzero(void *s, size_t n)
+{
+    (void)memset_s(s, n, 0, n);
+}
+# elif defined(HAVE_BZERO)
+/* Jumping through a volatile function pointer should not be optimized away. */
+void (* volatile sudo_explicit_bzero_impl)(void *, size_t) =
+    (void (*)(void *, size_t))bzero;
+
+void
+sudo_explicit_bzero(void *s, size_t n)
+{
+    sudo_explicit_bzero_impl(s, n);
+}
+# else
+void
+sudo_explicit_bzero(void *v, size_t n)
+{
+    volatile unsigned char *s = v;
+
+    /* Updating through a volatile pointer should not be optimized away. */
+    while (n--)
+	*s++ = '\0';
+}
+# endif /* HAVE_BZERO */
+
+#endif /* HAVE_EXPLICIT_BZERO */
diff --git a/lib/util/fatal.c b/lib/util/fatal.c
new file mode 100644
index 0000000..7d2e09d
--- /dev/null
+++ b/lib/util/fatal.c
@@ -0,0 +1,345 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2004-2005, 2010-2015, 2017-2018
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <unistd.h>
+#ifndef HAVE_GETADDRINFO
+# include "compat/getaddrinfo.h"
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_queue.h"
+#include "sudo_util.h"
+#include "sudo_plugin.h"
+
+struct sudo_fatal_callback {
+    SLIST_ENTRY(sudo_fatal_callback) entries;
+    void (*func)(void);
+};
+SLIST_HEAD(sudo_fatal_callback_list, sudo_fatal_callback);
+
+static struct sudo_fatal_callback_list callbacks = SLIST_HEAD_INITIALIZER(&callbacks);
+static sudo_conv_t sudo_warn_conversation;
+static sudo_warn_setlocale_t sudo_warn_setlocale;
+static sudo_warn_setlocale_t sudo_warn_setlocale_prev;
+
+static void warning(const char *errstr, const char *fmt, va_list ap);
+
+static void
+do_cleanup(void)
+{
+    struct sudo_fatal_callback *cb;
+
+    /* Run callbacks, removing them from the list as we go. */
+    while ((cb = SLIST_FIRST(&callbacks)) != NULL) {
+	SLIST_REMOVE_HEAD(&callbacks, entries);
+	cb->func();
+	free(cb);
+    }
+}
+
+void
+sudo_fatal_nodebug_v1(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    warning(strerror(errno), fmt, ap);
+    va_end(ap);
+    do_cleanup();
+    exit(EXIT_FAILURE);
+}
+
+void
+sudo_fatalx_nodebug_v1(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    warning(NULL, fmt, ap);
+    va_end(ap);
+    do_cleanup();
+    exit(EXIT_FAILURE);
+}
+
+void
+sudo_vfatal_nodebug_v1(const char *fmt, va_list ap)
+{
+    warning(strerror(errno), fmt, ap);
+    do_cleanup();
+    exit(EXIT_FAILURE);
+}
+
+void
+sudo_vfatalx_nodebug_v1(const char *fmt, va_list ap)
+{
+    warning(NULL, fmt, ap);
+    do_cleanup();
+    exit(EXIT_FAILURE);
+}
+
+void
+sudo_warn_nodebug_v1(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    warning(strerror(errno), fmt, ap);
+    va_end(ap);
+}
+
+void
+sudo_warnx_nodebug_v1(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    warning(NULL, fmt, ap);
+    va_end(ap);
+}
+
+void
+sudo_vwarn_nodebug_v1(const char *fmt, va_list ap)
+{
+    warning(strerror(errno), fmt, ap);
+}
+
+void
+sudo_vwarnx_nodebug_v1(const char *fmt, va_list ap)
+{
+    warning(NULL, fmt, ap);
+}
+
+void
+sudo_gai_fatal_nodebug_v1(int errnum, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    warning(gai_strerror(errnum), fmt, ap);
+    va_end(ap);
+    do_cleanup();
+    exit(EXIT_FAILURE);
+}
+
+void
+sudo_gai_vfatal_nodebug_v1(int errnum, const char *fmt, va_list ap)
+{
+    warning(gai_strerror(errnum), fmt, ap);
+    do_cleanup();
+    exit(EXIT_FAILURE);
+}
+
+void
+sudo_gai_warn_nodebug_v1(int errnum, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    warning(gai_strerror(errnum), fmt, ap);
+    va_end(ap);
+}
+
+void
+sudo_gai_vwarn_nodebug_v1(int errnum, const char *fmt, va_list ap)
+{
+    warning(gai_strerror(errnum), fmt, ap);
+}
+
+static void
+warning(const char *errstr, const char *fmt, va_list ap)
+{
+    int cookie;
+    const int saved_errno = errno;
+
+    /* Set user locale if setter was specified. */
+    if (sudo_warn_setlocale != NULL)
+	sudo_warn_setlocale(false, &cookie);
+
+    if (sudo_warn_conversation != NULL) {
+	struct sudo_conv_message msgs[6];
+	char static_buf[1024], *buf = static_buf;
+	int nmsgs = 0;
+
+	/* Use conversation function. */
+        msgs[nmsgs].msg_type = SUDO_CONV_ERROR_MSG;
+	msgs[nmsgs++].msg = getprogname();
+        if (fmt != NULL) {
+		va_list ap2;
+		int buflen;
+
+		/* Use static buffer if possible, else dynamic. */
+		va_copy(ap2, ap);
+		buflen = vsnprintf(static_buf, sizeof(static_buf), fmt, ap2);
+		va_end(ap2);
+		if (buflen >= ssizeof(static_buf)) {
+		    buf = malloc(++buflen);
+		    if (buf != NULL)
+			(void)vsnprintf(buf, buflen, fmt, ap);
+		    else
+			buf = static_buf;
+		}
+		msgs[nmsgs].msg_type = SUDO_CONV_ERROR_MSG;
+		msgs[nmsgs++].msg = ": ";
+		msgs[nmsgs].msg_type = SUDO_CONV_ERROR_MSG;
+		msgs[nmsgs++].msg = buf;
+        }
+        if (errstr != NULL) {
+	    msgs[nmsgs].msg_type = SUDO_CONV_ERROR_MSG;
+	    msgs[nmsgs++].msg = ": ";
+	    msgs[nmsgs].msg_type = SUDO_CONV_ERROR_MSG;
+	    msgs[nmsgs++].msg = errstr;
+        }
+	msgs[nmsgs].msg_type = SUDO_CONV_ERROR_MSG;
+	msgs[nmsgs++].msg = "\n";
+	sudo_warn_conversation(nmsgs, msgs, NULL, NULL);
+	if (buf != static_buf)
+	    free(buf);
+    } else {
+	/* Write to the standard error. */
+        fputs(getprogname(), stderr);
+        if (fmt != NULL) {
+                fputs(": ", stderr);
+                vfprintf(stderr, fmt, ap);
+        }
+        if (errstr != NULL) {
+            fputs(": ", stderr);
+            fputs(errstr, stderr);
+        }
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+        if (sudo_term_is_raw(fileno(stderr)))
+            putc('\r', stderr);
+#endif
+        putc('\n', stderr);
+    }
+
+    /* Restore old locale as needed. */
+    if (sudo_warn_setlocale != NULL)
+	sudo_warn_setlocale(true, &cookie);
+
+    /* Do not clobber errno. */
+    errno = saved_errno;
+}
+
+/*
+ * Register a callback to be run when sudo_fatal()/sudo_fatalx() is called.
+ */
+int
+sudo_fatal_callback_register_v1(sudo_fatal_callback_t func)
+{
+    struct sudo_fatal_callback *cb;
+
+    /* Do not register the same callback twice.  */
+    SLIST_FOREACH(cb, &callbacks, entries) {
+	if (func == cb->func)
+	    return -1;		/* dupe! */
+    }
+
+    /* Allocate and insert new callback. */
+    cb = malloc(sizeof(*cb));
+    if (cb == NULL)
+	return -1;
+    cb->func = func;
+    SLIST_INSERT_HEAD(&callbacks, cb, entries);
+
+    return 0;
+}
+
+/*
+ * Deregister a sudo_fatal()/sudo_fatalx() callback.
+ */
+int
+sudo_fatal_callback_deregister_v1(sudo_fatal_callback_t func)
+{
+    struct sudo_fatal_callback *cb, *prev = NULL;
+
+    /* Search for callback and remove if found, dupes are not allowed. */
+    SLIST_FOREACH(cb, &callbacks, entries) {
+	if (cb->func == func) {
+	    if (prev == NULL)
+		SLIST_REMOVE_HEAD(&callbacks, entries);
+	    else
+		SLIST_REMOVE_AFTER(prev, entries);
+	    free(cb);
+	    return 0;
+	}
+	prev = cb;
+    }
+
+    return -1;
+}
+
+/*
+ * Set the conversation function to use for output insteaf of the
+ * standard error.  If conv is NULL, switch back to standard error.
+ */
+void
+sudo_warn_set_conversation_v1(sudo_conv_t conv)
+{
+    sudo_warn_conversation = conv;
+}
+
+/*
+ * Set the locale function so the plugin can use a non-default
+ * locale for user warnings.
+ */
+void
+sudo_warn_set_locale_func_v1(sudo_warn_setlocale_t func)
+{
+    sudo_warn_setlocale_prev = sudo_warn_setlocale;
+    sudo_warn_setlocale = func;
+}
+
+#ifdef HAVE_LIBINTL_H
+char *
+sudo_warn_gettext_v1(const char *domainname, const char *msgid)
+{
+    int cookie;
+    char *msg;
+
+    /* Set user locale if setter was specified. */
+    if (sudo_warn_setlocale != NULL)
+	sudo_warn_setlocale(false, &cookie);
+
+    msg = dgettext(domainname, msgid);
+
+    /* Restore old locale as needed. */
+    if (sudo_warn_setlocale != NULL)
+	sudo_warn_setlocale(true, &cookie);
+
+    return msg;
+}
+#endif /* HAVE_LIBINTL_H */
diff --git a/lib/util/fchmodat.c b/lib/util/fchmodat.c
new file mode 100644
index 0000000..9800296
--- /dev/null
+++ b/lib/util/fchmodat.c
@@ -0,0 +1,69 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_FCHMODAT
+int
+sudo_fchmodat(int dfd, const char *path, mode_t mode, int flag)
+{
+    int odfd, ret = -1;
+
+    if (ISSET(flag, AT_SYMLINK_NOFOLLOW)) {
+	errno = ENOTSUP;
+	return -1;
+    }
+
+    if (dfd == (int)AT_FDCWD)
+	return chmod(path, mode);
+
+    /* Save cwd */
+    if ((odfd = open(".", O_RDONLY)) == -1)
+	goto done;
+
+    if (fchdir(dfd) == -1)
+	goto done;
+
+    ret = chmod(path, mode);
+
+    /* Restore cwd */
+    if (fchdir(odfd) == -1) {
+	/* Should not happen */
+	ret = -1;
+    }
+
+done:
+    if (odfd != -1)
+	close(odfd);
+
+    return ret;
+}
+#endif /* HAVE_FCHMODAT */
diff --git a/lib/util/fchownat.c b/lib/util/fchownat.c
new file mode 100644
index 0000000..545a21e
--- /dev/null
+++ b/lib/util/fchownat.c
@@ -0,0 +1,67 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_FCHOWNAT
+int
+sudo_fchownat(int dfd, const char *path, uid_t uid, gid_t gid, int flags)
+{
+    int odfd, ret;
+
+    if (dfd == AT_FDCWD) {
+	if (flags & AT_SYMLINK_NOFOLLOW)
+	    return lchown(path, uid, gid);
+	else
+	    return chown(path, uid, gid);
+    }
+
+    /* Save cwd */
+    if ((odfd = open(".", O_RDONLY)) == -1)
+	return -1;
+
+    if (fchdir(dfd) == -1) {
+	close(odfd);
+	return -1;
+    }
+
+    if (flags & AT_SYMLINK_NOFOLLOW)
+	ret = lchown(path, uid, gid);
+    else
+	ret = chown(path, uid, gid);
+
+    /* Restore cwd */
+    if (fchdir(odfd) == -1) {
+	/* Should not happen */
+	ret = -1;
+    }
+    close(odfd);
+
+    return ret;
+}
+#endif /* HAVE_FCHOWNAT */
diff --git a/lib/util/fnmatch.c b/lib/util/fnmatch.c
new file mode 100644
index 0000000..f393bb4
--- /dev/null
+++ b/lib/util/fnmatch.c
@@ -0,0 +1,499 @@
+/*	$OpenBSD: fnmatch.c,v 1.15 2011/02/10 21:31:59 stsp Exp $	*/
+
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2011, VMware, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the VMware, Inc. nor the names of its contributors
+ *       may be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2008, 2016 Todd C. Miller <millert@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+/* Authored by William A. Rowe Jr. <wrowe; apache.org, vmware.com>, April 2011
+ *
+ * Derived from The Open Group Base Specifications Issue 7, IEEE Std 1003.1-2008
+ * as described in;
+ *   http://pubs.opengroup.org/onlinepubs/9699919799/functions/fnmatch.html
+ *
+ * Filename pattern matches defined in section 2.13, "Pattern Matching Notation"
+ * from chapter 2. "Shell Command Language"
+ *   http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_13
+ * where; 1. A bracket expression starting with an unquoted <circumflex> '^' 
+ * character CONTINUES to specify a non-matching list; 2. an explicit <period> '.' 
+ * in a bracket expression matching list, e.g. "[.abc]" does NOT match a leading 
+ * <period> in a filename; 3. a <left-square-bracket> '[' which does not introduce
+ * a valid bracket expression is treated as an ordinary character; 4. a differing
+ * number of consecutive slashes within pattern and string will NOT match;
+ * 5. a trailing '\' in FNM_ESCAPE mode is treated as an ordinary '\' character.
+ *
+ * Bracket expansion defined in section 9.3.5, "RE Bracket Expression",
+ * from chapter 9, "Regular Expressions"
+ *   http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03_05
+ * with no support for collating symbols, equivalence class expressions or 
+ * character class expressions.  A partial range expression with a leading 
+ * hyphen following a valid range expression will match only the ordinary
+ * <hyphen> and the ending character (e.g. "[a-m-z]" will match characters 
+ * 'a' through 'm', a <hyphen> '-', or a 'z').
+ *
+ * Supports BSD extensions FNM_LEADING_DIR to match pattern to the end of one
+ * path segment of string, and FNM_CASEFOLD to ignore alpha case.
+ *
+ * NOTE: Only POSIX/C single byte locales are correctly supported at this time.
+ * Notably, non-POSIX locales with FNM_CASEFOLD produce undefined results,
+ * particularly in ranges of mixed case (e.g. "[A-z]") or spanning alpha and
+ * nonalpha characters within a range.
+ *
+ * XXX comments below indicate porting required for multi-byte character sets
+ * and non-POSIX locale collation orders; requires mbr* APIs to track shift
+ * state of pattern and string (rewinding pattern and string repeatedly).
+ *
+ * Certain parts of the code assume 0x00-0x3F are unique with any MBCS (e.g.
+ * UTF-8, SHIFT-JIS, etc).  Any implementation allowing '\' as an alternate
+ * path delimiter must be aware that 0x5C is NOT unique within SHIFT-JIS.
+ */
+
+#include <config.h>
+
+#ifndef HAVE_FNMATCH
+
+#include <ctype.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "compat/charclass.h"
+#include "compat/fnmatch.h"
+
+#define	RANGE_MATCH	1
+#define	RANGE_NOMATCH	0
+#define	RANGE_ERROR	(-1)
+
+static int
+classmatch(const char *pattern, char test, int foldcase, const char **ep)
+{
+	const char * const mismatch = pattern;
+	const char *colon;
+	struct cclass *cc;
+	int result = RANGE_NOMATCH;
+	size_t len;
+
+	if (pattern[0] != '[' || pattern[1] != ':') {
+		*ep = mismatch;
+		return RANGE_ERROR;
+	}
+	pattern += 2;
+
+	if ((colon = strchr(pattern, ':')) == NULL || colon[1] != ']') {
+		*ep = mismatch;
+		return RANGE_ERROR;
+	}
+	*ep = colon + 2;
+	len = (size_t)(colon - pattern);
+
+	if (foldcase && strncmp(pattern, "upper:]", 7) == 0)
+		pattern = "lower:]";
+	for (cc = cclasses; cc->name != NULL; cc++) {
+		if (!strncmp(pattern, cc->name, len) && cc->name[len] == '\0') {
+			if (cc->isctype((unsigned char)test))
+				result = RANGE_MATCH;
+			break;
+		}
+	}
+	if (cc->name == NULL) {
+		/* invalid character class, treat as normal text */
+		*ep = mismatch;
+		result = RANGE_ERROR;
+	}
+	return result;
+}
+
+/* Most MBCS/collation/case issues handled here.  Wildcard '*' is not handled.
+ * EOS '\0' and the FNM_PATHNAME '/' delimiters are not advanced over, 
+ * however the "\/" sequence is advanced to '/'.
+ *
+ * Both pattern and string are **char to support pointer increment of arbitrary
+ * multibyte characters for the given locale, in a later iteration of this code
+ */
+static int fnmatch_ch(const char **pattern, const char **string, int flags)
+{
+    const char * const mismatch = *pattern;
+    const int nocase = !!(flags & FNM_CASEFOLD);
+    const int escape = !(flags & FNM_NOESCAPE);
+    const int slash = !!(flags & FNM_PATHNAME);
+    int result = FNM_NOMATCH;
+    const char *startch;
+    int negate;
+
+    if (**pattern == '[')
+    {
+        ++*pattern;
+
+        /* Handle negation, either leading ! or ^ operators (never both) */
+        negate = ((**pattern == '!') || (**pattern == '^'));
+        if (negate)
+            ++*pattern;
+
+        /* ']' is an ordinary character at the start of the range pattern */
+        if (**pattern == ']')
+            goto leadingclosebrace;
+
+        while (**pattern)
+        {
+            if (**pattern == ']') {
+                ++*pattern;
+                /* XXX: Fix for MBCS character width */
+                ++*string;
+                return (result ^ negate);
+            }
+
+            if (escape && (**pattern == '\\')) {
+                ++*pattern;
+
+                /* Patterns must be terminated with ']', not EOS */
+                if (!**pattern)
+                    break;
+            }
+
+            /* Patterns must be terminated with ']' not '/' */
+            if (slash && (**pattern == '/'))
+                break;
+
+            /* Match character classes. */
+            switch (classmatch(*pattern, **string, nocase, pattern)) {
+	    case RANGE_MATCH:
+                result = 0;
+                continue;
+	    case RANGE_NOMATCH:
+		/* Valid character class but no match. */
+                continue;
+	    default:
+		/* Not a valid character class. */
+		break;
+	    }
+            if (!**pattern)
+                break;
+
+leadingclosebrace:
+            /* Look at only well-formed range patterns; 
+             * "x-]" is not allowed unless escaped ("x-\]")
+             * XXX: Fix for locale/MBCS character width
+             */
+            if (((*pattern)[1] == '-') && ((*pattern)[2] != ']'))
+            {
+                startch = *pattern;
+                *pattern += (escape && ((*pattern)[2] == '\\')) ? 3 : 2;
+
+                /* NOT a properly balanced [expr] pattern, EOS terminated 
+                 * or ranges containing a slash in FNM_PATHNAME mode pattern
+                 * fall out to to the rewind and test '[' literal code path
+                 */
+                if (!**pattern || (slash && (**pattern == '/')))
+                    break;
+
+                /* XXX: handle locale/MBCS comparison, advance by MBCS char width */
+                if ((**string >= *startch) && (**string <= **pattern))
+                    result = 0;
+                else if (nocase && (isupper((unsigned char)**string) ||
+				    isupper((unsigned char)*startch) ||
+				    isupper((unsigned char)**pattern))
+                            && (tolower((unsigned char)**string) >= tolower((unsigned char)*startch)) 
+                            && (tolower((unsigned char)**string) <= tolower((unsigned char)**pattern)))
+                    result = 0;
+
+                ++*pattern;
+                continue;
+            }
+
+            /* XXX: handle locale/MBCS comparison, advance by MBCS char width */
+            if ((**string == **pattern))
+                result = 0;
+            else if (nocase && (isupper((unsigned char)**string) ||
+				isupper((unsigned char)**pattern))
+                            && (tolower((unsigned char)**string) == tolower((unsigned char)**pattern)))
+                result = 0;
+
+            ++*pattern;
+        }
+
+        /* NOT a properly balanced [expr] pattern; Rewind
+         * and reset result to test '[' literal
+         */
+        *pattern = mismatch;
+        result = FNM_NOMATCH;
+    }
+    else if (**pattern == '?') {
+        /* Optimize '?' match before unescaping **pattern */
+        if (!**string || (slash && (**string == '/')))
+            return FNM_NOMATCH;
+        result = 0;
+        goto fnmatch_ch_success;
+    }
+    else if (escape && (**pattern == '\\') && (*pattern)[1]) {
+        ++*pattern;
+    }
+
+    /* XXX: handle locale/MBCS comparison, advance by the MBCS char width */
+    if (**string == **pattern)
+        result = 0;
+    else if (nocase && (isupper((unsigned char)**string) || isupper((unsigned char)**pattern))
+                    && (tolower((unsigned char)**string) == tolower((unsigned char)**pattern)))
+        result = 0;
+
+    /* Refuse to advance over trailing slash or nulls
+     */
+    if (!**string || !**pattern || (slash && ((**string == '/') || (**pattern == '/'))))
+        return result;
+
+fnmatch_ch_success:
+    ++*pattern;
+    ++*string;
+    return result;
+}
+
+int sudo_fnmatch(const char *pattern, const char *string, int flags)
+{
+    static const char dummystring[2] = {' ', 0};
+    const int escape = !(flags & FNM_NOESCAPE);
+    const int slash = !!(flags & FNM_PATHNAME);
+    const int leading_dir = !!(flags & FNM_LEADING_DIR);
+    const char *strendseg;
+    const char *dummyptr;
+    const char *matchptr;
+    int wild;
+    /* For '*' wild processing only; suppress 'used before initialization'
+     * warnings with dummy initialization values;
+     */
+    const char *strstartseg = NULL;
+    const char *mismatch = NULL;
+    int matchlen = 0;
+
+    if (*pattern == '*')
+        goto firstsegment;
+
+    while (*pattern && *string)
+    {
+        /* Pre-decode "\/" which has no special significance, and
+         * match balanced slashes, starting a new segment pattern
+         */
+        if (slash && escape && (*pattern == '\\') && (pattern[1] == '/'))
+            ++pattern;
+        if (slash && (*pattern == '/') && (*string == '/')) {
+            ++pattern;
+            ++string;
+        }            
+
+firstsegment:
+        /* At the beginning of each segment, validate leading period behavior.
+         */
+        if ((flags & FNM_PERIOD) && (*string == '.'))
+        {
+            if (*pattern == '.')
+                ++pattern;
+            else if (escape && (*pattern == '\\') && (pattern[1] == '.'))
+                pattern += 2;
+            else
+                return FNM_NOMATCH;
+            ++string;
+        }
+
+        /* Determine the end of string segment
+         *
+         * Presumes '/' character is unique, not composite in any MBCS encoding
+         */
+        if (slash) {
+            strendseg = strchr(string, '/');
+            if (!strendseg)
+                strendseg = strchr(string, '\0');
+        }
+        else {
+            strendseg = strchr(string, '\0');
+        }
+
+        /* Allow pattern '*' to be consumed even with no remaining string to match
+         */
+        while (*pattern)
+        {
+            if ((string > strendseg)
+                || ((string == strendseg) && (*pattern != '*')))
+                break;
+
+            if (slash && ((*pattern == '/')
+                           || (escape && (*pattern == '\\')
+                                      && (pattern[1] == '/'))))
+                break;
+
+            /* Reduce groups of '*' and '?' to n '?' matches
+             * followed by one '*' test for simplicity
+             */
+            for (wild = 0; ((*pattern == '*') || (*pattern == '?')); ++pattern)
+            {
+                if (*pattern == '*') {
+                    wild = 1;
+                }
+                else if (string < strendseg) {  /* && (*pattern == '?') */
+                    /* XXX: Advance 1 char for MBCS locale */
+                    ++string;
+                }
+                else {  /* (string >= strendseg) && (*pattern == '?') */
+                    return FNM_NOMATCH;
+                }
+            }
+
+            if (wild)
+            {
+                strstartseg = string;
+                mismatch = pattern;
+
+                /* Count fixed (non '*') char matches remaining in pattern
+                 * excluding '/' (or "\/") and '*'
+                 */
+                for (matchptr = pattern, matchlen = 0; 1; ++matchlen)
+                {
+                    if ((*matchptr == '\0') 
+                        || (slash && ((*matchptr == '/')
+                                      || (escape && (*matchptr == '\\')
+                                                 && (matchptr[1] == '/')))))
+                    {
+                        /* Compare precisely this many trailing string chars,
+                         * the resulting match needs no wildcard loop
+                         */
+                        /* XXX: Adjust for MBCS */
+                        if (string + matchlen > strendseg)
+                            return FNM_NOMATCH;
+
+                        string = strendseg - matchlen;
+                        wild = 0;
+                        break;
+                    }
+
+                    if (*matchptr == '*')
+                    {
+                        /* Ensure at least this many trailing string chars remain
+                         * for the first comparison
+                         */
+                        /* XXX: Adjust for MBCS */
+                        if (string + matchlen > strendseg)
+                            return FNM_NOMATCH;
+
+                        /* Begin first wild comparison at the current position */
+                        break;
+                    }
+
+                    /* Skip forward in pattern by a single character match
+                     * Use a dummy fnmatch_ch() test to count one "[range]" escape
+                     */ 
+                    /* XXX: Adjust for MBCS */
+                    if (escape && (*matchptr == '\\') && matchptr[1]) {
+                        matchptr += 2;
+                    }
+                    else if (*matchptr == '[') {
+                        dummyptr = dummystring;
+                        fnmatch_ch(&matchptr, &dummyptr, flags);
+                    }
+                    else {
+                        ++matchptr;
+                    }
+                }
+            }
+
+            /* Incrementally match string against the pattern
+             */
+            while (*pattern && (string < strendseg))
+            {
+                /* Success; begin a new wild pattern search
+                 */
+                if (*pattern == '*')
+                    break;
+
+                if (slash && ((*string == '/')
+                              || (*pattern == '/')
+                              || (escape && (*pattern == '\\')
+                                         && (pattern[1] == '/'))))
+                    break;
+
+                /* Compare ch's (the pattern is advanced over "\/" to the '/',
+                 * but slashes will mismatch, and are not consumed)
+                 */
+                if (!fnmatch_ch(&pattern, &string, flags))
+                    continue;
+
+                /* Failed to match, loop against next char offset of string segment 
+                 * until not enough string chars remain to match the fixed pattern
+                 */
+                if (wild) {
+                    /* XXX: Advance 1 char for MBCS locale */
+                    string = ++strstartseg;
+                    if (string + matchlen > strendseg)
+                        return FNM_NOMATCH;
+
+                    pattern = mismatch;
+                    continue;
+                }
+                else
+                    return FNM_NOMATCH;
+            }
+        }
+
+        if (*string && !((slash || leading_dir) && (*string == '/')))
+            return FNM_NOMATCH;
+
+        if (*pattern && !(slash && ((*pattern == '/')
+                                    || (escape && (*pattern == '\\')
+                                               && (pattern[1] == '/')))))
+            return FNM_NOMATCH;
+
+        if (leading_dir && !*pattern && *string == '/')
+            return 0;
+    }
+
+    /* Where both pattern and string are at EOS, declare success
+     */
+    if (!*string && !*pattern)
+        return 0;
+
+    /* pattern didn't match to the end of string */
+    return FNM_NOMATCH;
+}
+#endif /* HAVE_FNMATCH */
diff --git a/lib/util/freezero.c b/lib/util/freezero.c
new file mode 100644
index 0000000..e2d2e8a
--- /dev/null
+++ b/lib/util/freezero.c
@@ -0,0 +1,38 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_FREEZERO
+void
+sudo_freezero(void *p, size_t n)
+{
+    explicit_bzero(p, n);
+    free(p);
+}
+#endif /* HAVE_FREEZERO */
diff --git a/lib/util/fstatat.c b/lib/util/fstatat.c
new file mode 100644
index 0000000..0b342d1
--- /dev/null
+++ b/lib/util/fstatat.c
@@ -0,0 +1,70 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_FSTATAT
+int
+sudo_fstatat(int dfd, const char *path, struct stat *sb, int flag)
+{
+    int odfd, ret = -1;
+
+    if (dfd == (int)AT_FDCWD) {
+	if (ISSET(flag, AT_SYMLINK_NOFOLLOW))
+	    return lstat(path, sb);
+	else
+	    return stat(path, sb);
+    }
+
+    /* Save cwd */
+    if ((odfd = open(".", O_RDONLY)) == -1)
+	goto done;
+
+    if (fchdir(dfd) == -1)
+	goto done;
+
+    if (ISSET(flag, AT_SYMLINK_NOFOLLOW))
+	ret = lstat(path, sb);
+    else
+	ret = stat(path, sb);
+
+    /* Restore cwd */
+    if (fchdir(odfd) == -1) {
+	/* Should not happen */
+	ret = -1;
+    }
+
+done:
+    if (odfd != -1)
+	close(odfd);
+
+    return ret;
+}
+#endif /* HAVE_FSTATAT */
diff --git a/lib/util/getaddrinfo.c b/lib/util/getaddrinfo.c
new file mode 100644
index 0000000..ad0ea5f
--- /dev/null
+++ b/lib/util/getaddrinfo.c
@@ -0,0 +1,406 @@
+/*
+ * Replacement for a missing getaddrinfo.
+ *
+ * This is an implementation of getaddrinfo for systems that don't have one so
+ * that networking code can use a consistent interface without #ifdef.  It is
+ * a fairly minimal implementation, with the following limitations:
+ *
+ *   - IPv4 support only.  IPv6 is not supported.
+ *   - AI_ADDRCONFIG is ignored.
+ *   - Not thread-safe due to gethostbyname and getservbyname.
+ *   - SOCK_DGRAM and SOCK_STREAM only.
+ *   - Multiple possible socket types only generate one addrinfo struct.
+ *   - Protocol hints aren't used correctly.
+ *
+ * The last four issues could probably be easily remedied, but haven't been
+ * needed to date.  Adding IPv6 support isn't worth it; systems with IPv6
+ * support should already have getaddrinfo.
+ *
+ * The canonical version of this file is maintained in the rra-c-util package,
+ * which can be found at <http://www.eyrie.org/~eagle/software/rra-c-util/>.
+ *
+ * Written by Russ Allbery <rra@stanford.edu>
+ *
+ * The authors hereby relinquish any claim to any copyright that they may have
+ * in this work, whether granted under contract or by operation of law or
+ * international treaty, and hereby commit to the public, at large, that they
+ * shall not, at any time in the future, seek to enforce any copyright in this
+ * work against any person or entity, or prevent any person or entity from
+ * copying, publishing, distributing or creating derivative works of this
+ * work.
+ */
+
+#include <config.h>
+
+#ifndef HAVE_GETADDRINFO
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <netdb.h>
+#include <errno.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#ifdef NEED_RESOLV_H
+# include <arpa/nameser.h>
+# include <resolv.h>
+#endif /* NEED_RESOLV_H */
+
+#include "sudo_compat.h"
+#include "compat/getaddrinfo.h"
+
+/* We need access to h_errno to map errors from gethostbyname. */
+#ifndef HAVE_DECL_H_ERRNO
+extern int h_errno;
+#endif
+
+/*
+ * The netdb constants, which aren't always defined (particularly if h_errno
+ * isn't declared).  We also make sure that a few of the less-used ones are
+ * defined so that we can deal with them in case statements.
+ */
+#ifndef HOST_NOT_FOUND
+# define HOST_NOT_FOUND 1
+# define TRY_AGAIN      2
+# define NO_RECOVERY    3
+# define NO_DATA        4
+#endif
+#ifndef NETDB_INTERNAL
+# define NETDB_INTERNAL -1
+#endif
+
+/*
+ * If we're running the test suite, rename the functions to avoid conflicts
+ * with the system version.  Note that we don't rename the structures and
+ * constants, but that should be okay (except possibly for gai_strerror).
+ */
+#ifdef TESTING
+# define gai_strerror test_gai_strerror
+# define freeaddrinfo test_freeaddrinfo
+# define getaddrinfo  test_getaddrinfo
+const char *test_gai_strerror(int);
+void test_freeaddrinfo(struct addrinfo *);
+int test_getaddrinfo(const char *, const char *, const struct addrinfo *,
+                     struct addrinfo **);
+#endif
+
+/*
+ * If the platform doesn't support AI_NUMERICSERV or AI_NUMERICHOST,
+ * pick some other values for them.
+ */
+#ifdef TESTING
+# if AI_NUMERICSERV == 0
+#  undef AI_NUMERICSERV
+#  define AI_NUMERICSERV 0x0080
+# endif
+# if AI_NUMERICHOST == 0
+#  undef AI_NUMERICHOST
+#  define AI_NUMERICHOST 0x0100
+# endif
+#endif
+
+/*
+ * Value representing all of the hint flags set.  Linux uses flags up to
+ * 0x0400, so be sure not to break when testing on that platform.
+ */
+#ifdef TESTING
+# ifdef HAVE_GETADDRINFO
+#  define AI_INTERNAL_ALL 0x04ff
+# else
+#  define AI_INTERNAL_ALL 0x01ff
+# endif
+#else
+# define AI_INTERNAL_ALL 0x007f
+#endif
+
+/* Table of strings corresponding to the EAI_* error codes. */
+static const char * const gai_errors[] = {
+    "Host name lookup failure",         /*  1 EAI_AGAIN */
+    "Invalid flag value",               /*  2 EAI_BADFLAGS */
+    "Unknown server error",             /*  3 EAI_FAIL */
+    "Unsupported address family",       /*  4 EAI_FAMILY */
+    "Memory allocation failure",        /*  5 EAI_MEMORY */
+    "Host unknown or not given",        /*  6 EAI_NONAME */
+    "Service not supported for socket", /*  7 EAI_SERVICE */
+    "Unsupported socket type",          /*  8 EAI_SOCKTYPE */
+    "System error",                     /*  9 EAI_SYSTEM */
+    "Supplied buffer too small",        /* 10 EAI_OVERFLOW */
+};
+
+/* Macro to set the len attribute of sockaddr_in. */
+#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
+# define sin_set_length(s) ((s)->sin_len = sizeof(struct sockaddr_in))
+#else
+# define sin_set_length(s) /* empty */
+#endif
+
+/*
+ * Return a constant string for a given EAI_* error code or a string
+ * indicating an unknown error.
+ */
+const char *
+sudo_gai_strerror(int ecode)
+{
+    if (ecode < 1 || (size_t) ecode > nitems(gai_errors))
+        return "Unknown error";
+    else
+        return gai_errors[ecode - 1];
+}
+
+
+/*
+ * Free a linked list of addrinfo structs.
+ */
+void
+sudo_freeaddrinfo(struct addrinfo *ai)
+{
+    struct addrinfo *next;
+
+    while (ai != NULL) {
+        next = ai->ai_next;
+        if (ai->ai_addr != NULL)
+            free(ai->ai_addr);
+        if (ai->ai_canonname != NULL)
+            free(ai->ai_canonname);
+        free(ai);
+        ai = next;
+    }
+}
+
+
+/*
+ * Allocate a new addrinfo struct, setting some defaults given that this
+ * implementation is IPv4 only.  Also allocates an attached sockaddr_in and
+ * zeroes it, per the requirement for getaddrinfo.  Takes the socktype,
+ * canonical name (which is copied if not NULL), address, and port.  Returns
+ * NULL on a memory allocation failure.
+ */
+static struct addrinfo *
+gai_addrinfo_new(int socktype, const char *canonical, struct in_addr addr,
+                 unsigned short port)
+{
+    struct addrinfo *ai;
+
+    ai = malloc(sizeof(*ai));
+    if (ai == NULL)
+        return NULL;
+    ai->ai_addr = malloc(sizeof(struct sockaddr_in));
+    if (ai->ai_addr == NULL) {
+        free(ai);
+        return NULL;
+    }
+    ai->ai_next = NULL;
+    if (canonical == NULL)
+        ai->ai_canonname = NULL;
+    else {
+        ai->ai_canonname = strdup(canonical);
+        if (ai->ai_canonname == NULL) {
+            freeaddrinfo(ai);
+            return NULL;
+        }
+    }
+    memset(ai->ai_addr, 0, sizeof(struct sockaddr_in));
+    ai->ai_flags = 0;
+    ai->ai_family = AF_INET;
+    ai->ai_socktype = socktype;
+    ai->ai_protocol = (socktype == SOCK_DGRAM) ? IPPROTO_UDP : IPPROTO_TCP;
+    ai->ai_addrlen = sizeof(struct sockaddr_in);
+    ((struct sockaddr_in *) ai->ai_addr)->sin_family = AF_INET;
+    ((struct sockaddr_in *) ai->ai_addr)->sin_addr = addr;
+    ((struct sockaddr_in *) ai->ai_addr)->sin_port = htons(port);
+    sin_set_length((struct sockaddr_in *) ai->ai_addr);
+    return ai;
+}
+
+
+/*
+ * Look up a service.  Takes the service name (which may be numeric), the hint
+ * flags, a pointer to the socket type (used to determine whether TCP or UDP
+ * services are of interest and, if 0, is filled in with the result of
+ * getservbyname if the service was not numeric), and a pointer to the
+ * addrinfo struct to fill in.  Returns 0 on success or an EAI_* error on
+ * failure.
+ */
+static int
+gai_service(const char *servname, int flags, int *type, unsigned short *port)
+{
+    struct servent *servent;
+    const char *protocol;
+    const char *errstr;
+    unsigned short value;
+
+    value = sudo_strtonum(servname, 0, USHRT_MAX, &errstr);
+    if (errstr == NULL) {
+        *port = value;
+    } else if (errno == ERANGE) {
+	return EAI_SERVICE;
+    } else {
+        if (flags & AI_NUMERICSERV)
+            return EAI_NONAME;
+        if (*type != 0)
+            protocol = (*type == SOCK_DGRAM) ? "udp" : "tcp";
+        else
+            protocol = NULL;
+
+        /*
+         * We really technically should be generating an addrinfo struct for
+         * each possible protocol unless type is set, but this works well
+         * enough for what I need this for.
+         */
+        servent = getservbyname(servname, protocol);
+        if (servent == NULL)
+            return EAI_NONAME;
+        if (strcmp(servent->s_proto, "udp") == 0)
+            *type = SOCK_DGRAM;
+        else if (strcmp(servent->s_proto, "tcp") == 0)
+            *type = SOCK_STREAM;
+        else
+            return EAI_SERVICE;
+        *port = htons(servent->s_port);
+    }
+    return 0;
+}
+
+
+/*
+ * Look up a host and fill in a linked list of addrinfo structs with the
+ * results, one per IP address of the returned host.  Takes the name or IP
+ * address of the host as a string, the lookup flags, the type of socket (to
+ * fill into the addrinfo structs), the port (likewise), and a pointer to
+ * where the head of the linked list should be put.  Returns 0 on success or
+ * the appropriate EAI_* error.
+ */
+static int
+gai_lookup(const char *nodename, int flags, int socktype, unsigned short port,
+           struct addrinfo **res)
+{
+    struct addrinfo *ai, *first, *prev;
+    struct in_addr addr;
+    struct hostent *host;
+    const char *canonical;
+    int i;
+
+    if (inet_pton(AF_INET, nodename, &addr)) {
+        canonical = (flags & AI_CANONNAME) ? nodename : NULL;
+        ai = gai_addrinfo_new(socktype, canonical, addr, port);
+        if (ai == NULL)
+            return EAI_MEMORY;
+        *res = ai;
+        return 0;
+    } else {
+        if (flags & AI_NUMERICHOST)
+            return EAI_NONAME;
+        host = gethostbyname(nodename);
+        if (host == NULL)
+            switch (h_errno) {
+            case HOST_NOT_FOUND:
+                return EAI_NONAME;
+            case TRY_AGAIN:
+            case NO_DATA:
+                return EAI_AGAIN;
+            case NO_RECOVERY:
+                return EAI_FAIL;
+            case NETDB_INTERNAL:
+            default:
+                return EAI_SYSTEM;
+            }
+        if (host->h_addr_list[0] == NULL)
+            return EAI_FAIL;
+        canonical = (flags & AI_CANONNAME)
+            ? ((host->h_name != NULL) ? host->h_name : nodename)
+            : NULL;
+        first = NULL;
+        prev = NULL;
+        for (i = 0; host->h_addr_list[i] != NULL; i++) {
+            if (host->h_length != sizeof(addr)) {
+                freeaddrinfo(first);
+                return EAI_FAIL;
+            }
+            memcpy(&addr, host->h_addr_list[i], sizeof(addr));
+            ai = gai_addrinfo_new(socktype, canonical, addr, port);
+            if (ai == NULL) {
+                freeaddrinfo(first);
+                return EAI_MEMORY;
+            }
+            if (first == NULL) {
+                first = ai;
+                prev = ai;
+            } else {
+                prev->ai_next = ai;
+                prev = ai;
+            }
+        }
+        *res = first;
+        return 0;
+    }
+}
+
+
+/*
+ * The actual getaddrinfo implementation.
+ */
+int
+sudo_getaddrinfo(const char *nodename, const char *servname,
+            const struct addrinfo *hints, struct addrinfo **res)
+{
+    struct addrinfo *ai;
+    struct in_addr addr;
+    int flags, socktype, status;
+    unsigned short port;
+
+    /* Take the hints into account and check them for validity. */
+    if (hints != NULL) {
+        flags = hints->ai_flags;
+        socktype = hints->ai_socktype;
+        if ((flags & AI_INTERNAL_ALL) != flags)
+            return EAI_BADFLAGS;
+        if (hints->ai_family != AF_UNSPEC && hints->ai_family != AF_INET)
+            return EAI_FAMILY;
+        if (socktype != 0 && socktype != SOCK_STREAM && socktype != SOCK_DGRAM)
+            return EAI_SOCKTYPE;
+
+        /* EAI_SOCKTYPE isn't quite right, but there isn't anything better. */
+        if (hints->ai_protocol != 0) {
+            int protocol = hints->ai_protocol;
+            if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP)
+                return EAI_SOCKTYPE;
+        }
+    } else {
+        flags = 0;
+        socktype = 0;
+    }
+
+    /*
+     * See what we're doing.  If nodename is null, either AI_PASSIVE is set or
+     * we're getting information for connecting to a service on the loopback
+     * address.  Otherwise, we're getting information for connecting to a
+     * remote system.
+     */
+    if (servname == NULL)
+        port = 0;
+    else {
+        status = gai_service(servname, flags, &socktype, &port);
+        if (status != 0)
+            return status;
+    }
+    if (nodename != NULL)
+        return gai_lookup(nodename, flags, socktype, port, res);
+    else {
+        if (servname == NULL)
+            return EAI_NONAME;
+        if ((flags & AI_PASSIVE) == AI_PASSIVE)
+            addr.s_addr = INADDR_ANY;
+        else
+            addr.s_addr = htonl(0x7f000001UL);
+        ai = gai_addrinfo_new(socktype, NULL, addr, port);
+        if (ai == NULL)
+            return EAI_MEMORY;
+        *res = ai;
+        return 0;
+    }
+}
+#endif /* HAVE_GETADDRINFO */
diff --git a/lib/util/getcwd.c b/lib/util/getcwd.c
new file mode 100644
index 0000000..7cfc068
--- /dev/null
+++ b/lib/util/getcwd.c
@@ -0,0 +1,244 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1989, 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#ifndef HAVE_GETCWD
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+
+#define	ISDOT(dp) \
+	(dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
+	    (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
+
+#if defined(HAVE_STRUCT_DIRENT_D_NAMLEN) && HAVE_STRUCT_DIRENT_D_NAMLEN
+# define NAMLEN(dirent)	(dirent)->d_namlen
+#else
+# define NAMLEN(dirent)	strlen((dirent)->d_name)
+#endif
+
+char *
+sudo_getcwd(char *pt, size_t size)
+{
+	struct dirent *dp;
+	DIR *dir = NULL;
+	dev_t dev;
+	ino_t ino;
+	int first;
+	char *bpt, *bup;
+	struct stat s;
+	dev_t root_dev;
+	ino_t root_ino;
+	size_t ptsize, upsize;
+	int save_errno;
+	char *ept, *eup, *up;
+
+	/*
+	 * If no buffer specified by the user, allocate one as necessary.
+	 * If a buffer is specified, the size has to be non-zero.  The path
+	 * is built from the end of the buffer backwards.
+	 */
+	if (pt) {
+		ptsize = 0;
+		if (!size) {
+			errno = EINVAL;
+			return NULL;
+		}
+		ept = pt + size;
+	} else {
+		if ((pt = malloc(ptsize = 1024 - 4)) == NULL)
+			return NULL;
+		ept = pt + ptsize;
+	}
+	bpt = ept - 1;
+	*bpt = '\0';
+
+	/*
+	 * Allocate bytes (1024 - malloc space) for the string of "../"'s.
+	 * Should always be enough (it's 340 levels).  If it's not, allocate
+	 * as necessary.  Special * case the first stat, it's ".", not "..".
+	 */
+	if ((up = malloc(upsize = 1024 - 4)) == NULL)
+		goto err;
+	eup = up + PATH_MAX;
+	bup = up;
+	up[0] = '.';
+	up[1] = '\0';
+
+	/* Save root values, so know when to stop. */
+	if (stat("/", &s))
+		goto err;
+	root_dev = s.st_dev;
+	root_ino = s.st_ino;
+
+	errno = 0;			/* XXX readdir has no error return. */
+
+	for (first = 1;; first = 0) {
+		/* Stat the current level. */
+		if (lstat(up, &s))
+			goto err;
+
+		/* Save current node values. */
+		ino = s.st_ino;
+		dev = s.st_dev;
+
+		/* Check for reaching root. */
+		if (root_dev == dev && root_ino == ino) {
+			*--bpt = '/';
+			/*
+			 * It's unclear that it's a requirement to copy the
+			 * path to the beginning of the buffer, but it's always
+			 * been that way and stuff would probably break.
+			 */
+			memcpy(pt, bpt, ept - bpt);
+			free(up);
+			return pt;
+		}
+
+		/*
+		 * Build pointer to the parent directory, allocating memory
+		 * as necessary.  Max length is 3 for "../", the largest
+		 * possible component name, plus a trailing NULL.
+		 */
+		if (bup + 3  + NAME_MAX + 1 >= eup) {
+			char *nup;
+
+			if ((nup = reallocarray(up, upsize, 2)) == NULL)
+				goto err;
+			upsize *= 2;
+			up = nup;
+			bup = up;
+			eup = up + upsize;
+		}
+		*bup++ = '.';
+		*bup++ = '.';
+		*bup = '\0';
+
+		/* Open and stat parent directory. */
+		if (!(dir = opendir(up)) || fstat(dirfd(dir), &s))
+			goto err;
+
+		/* Add trailing slash for next directory. */
+		*bup++ = '/';
+
+		/*
+		 * If it's a mount point, have to stat each element because
+		 * the inode number in the directory is for the entry in the
+		 * parent directory, not the inode number of the mounted file.
+		 */
+		save_errno = 0;
+		if (s.st_dev == dev) {
+			for (;;) {
+				if (!(dp = readdir(dir)))
+					goto notfound;
+				if (dp->d_fileno == ino)
+					break;
+			}
+		} else
+			for (;;) {
+				if (!(dp = readdir(dir)))
+					goto notfound;
+				if (ISDOT(dp))
+					continue;
+				memcpy(bup, dp->d_name, NAMLEN(dp) + 1);
+
+				/* Save the first error for later. */
+				if (lstat(up, &s)) {
+					if (!save_errno)
+						save_errno = errno;
+					errno = 0;
+					continue;
+				}
+				if (s.st_dev == dev && s.st_ino == ino)
+					break;
+			}
+
+		/*
+		 * Check for length of the current name, preceding slash,
+		 * leading slash.
+		 */
+		if (bpt - pt <= NAMLEN(dp) + (first ? 1 : 2)) {
+			size_t len, off;
+			char *npt;
+
+			if (!ptsize) {
+				errno = ERANGE;
+				goto err;
+			}
+			off = bpt - pt;
+			len = ept - bpt;
+			if ((npt = reallocarray(pt, ptsize, 2)) == NULL)
+				goto err;
+			ptsize *= 2;
+			pt = npt;
+			bpt = pt + off;
+			ept = pt + ptsize;
+			memcpy(ept - len, bpt, len);
+			bpt = ept - len;
+		}
+		if (!first)
+			*--bpt = '/';
+		bpt -= NAMLEN(dp);
+		memcpy(bpt, dp->d_name, NAMLEN(dp));
+		(void)closedir(dir);
+
+		/* Truncate any file name. */
+		*bup = '\0';
+	}
+
+notfound:
+	/*
+	 * If readdir set errno, use it, not any saved error; otherwise,
+	 * didn't find the current directory in its parent directory, set
+	 * errno to ENOENT.
+	 */
+	if (!errno)
+		errno = save_errno ? save_errno : ENOENT;
+	/* FALLTHROUGH */
+err:
+	if (ptsize)
+		free(pt);
+	if (up)
+		free(up);
+	if (dir)
+		(void)closedir(dir);
+	return NULL;
+}
+#endif /* HAVE_GETCWD */
diff --git a/lib/util/getdelim.c b/lib/util/getdelim.c
new file mode 100644
index 0000000..53687a1
--- /dev/null
+++ b/lib/util/getdelim.c
@@ -0,0 +1,82 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_GETDELIM
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+
+ssize_t
+sudo_getdelim(char **buf, size_t *bufsize, int delim, FILE *fp)
+{
+    char *cp, *ep;
+    int ch;
+
+    if (*buf == NULL || *bufsize == 0) {
+	char *tmp = realloc(*buf, LINE_MAX);
+	if (tmp == NULL)
+	    return -1;
+	*buf = tmp;
+	*bufsize = LINE_MAX;
+    }
+    cp = *buf;
+    ep = cp + *bufsize;
+
+    do {
+	if (cp + 1 >= ep) {
+	    char *newbuf = reallocarray(*buf, *bufsize, 2);
+	    if (newbuf == NULL)
+		goto bad;
+	    *bufsize *= 2;
+	    cp = newbuf + (cp - *buf);
+	    ep = newbuf + *bufsize;
+	    *buf = newbuf;
+	}
+	if ((ch = getc(fp)) == EOF) {
+	    if (feof(fp))
+		break;
+	    goto bad;
+	}
+	*cp++ = ch;
+    } while (ch != delim);
+
+    /* getdelim(3) should never return a length of 0. */
+    if (cp != *buf) {
+	*cp = '\0';
+	return (ssize_t)(cp - *buf);
+    }
+bad:
+    /* Error, push back what was read if possible. */
+    while (cp > *buf) {
+	if (ungetc(*cp--, fp) == EOF)
+	    break;
+    }
+    return -1;
+}
+#endif /* HAVE_GETDELIM */
diff --git a/lib/util/getentropy.c b/lib/util/getentropy.c
new file mode 100644
index 0000000..dc5c91c
--- /dev/null
+++ b/lib/util/getentropy.c
@@ -0,0 +1,642 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014 Theo de Raadt <deraadt@openbsd.org>
+ * Copyright (c) 2014 Bob Beck <beck@obtuse.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Emulation of getentropy(2) as documented at:
+ * http://man.openbsd.org/getentropy.2
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_GETENTROPY
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+#endif
+#ifdef HAVE_SYS_STATVFS_H
+# include <sys/statvfs.h>
+#endif
+#include <sys/stat.h>
+#include <sys/time.h>
+#ifdef HAVE_SYS_SYSCALL_H
+# include <sys/syscall.h>
+#endif
+#ifdef HAVE_LINUX_RANDOM_H
+# include <linux/types.h>
+# include <linux/random.h>
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <time.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#ifdef HAVE_GETAUXVAL
+# include <sys/auxv.h>
+#endif
+#ifdef HAVE_DL_ITERATE_PHDR
+# include <link.h>
+#endif
+#ifdef HAVE_OPENSSL
+# if defined(HAVE_WOLFSSL)
+#  include <wolfssl/options.h>
+# endif
+# include <openssl/rand.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_digest.h"
+#include "sudo_rand.h"
+
+#if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
+# define MAP_ANON MAP_ANONYMOUS
+#endif
+
+#ifndef MAP_FAILED
+# define MAP_FAILED ((void *) -1)
+#endif
+
+#define REPEAT 5
+#define min(a, b) (((a) < (b)) ? (a) : (b))
+
+#define HX(a, b) \
+	do { \
+		if ((a)) \
+			HD(errno); \
+		else \
+			HD(b); \
+	} while (0)
+
+#define HR(x, l) (sudo_digest_update(ctx, (char *)(x), (l)))
+#define HD(x)    (sudo_digest_update(ctx, (char *)&(x), sizeof (x)))
+#define HF(x)    (sudo_digest_update(ctx, (char *)&(x), sizeof (void*)))
+
+int	sudo_getentropy(void *buf, size_t len);
+
+static int getentropy_getrandom(void *buf, size_t len);
+static int getentropy_sysctl(void *buf, size_t len);
+static int getentropy_urandom(void *buf, size_t len, const char *path,
+    int devfscheck);
+static int getentropy_fallback(void *buf, size_t len);
+static int gotdata(char *buf, size_t len);
+#ifdef HAVE_DL_ITERATE_PHDR
+static int getentropy_phdr(struct dl_phdr_info *info, size_t size, void *data);
+#endif
+
+static void *
+mmap_anon(void *addr, size_t len, int prot, int flags, off_t offset)
+{
+#ifdef MAP_ANON
+	return mmap(addr, len, prot, flags | MAP_ANON, -1, offset);
+#else
+	int fd;
+
+	if ((fd = open("/dev/zero", O_RDWR)) == -1)
+		return MAP_FAILED;
+	addr = mmap(addr, len, prot, flags, fd, offset);
+	close(fd);
+	return addr;
+#endif
+}
+
+int
+sudo_getentropy(void *buf, size_t len)
+{
+	int ret = -1;
+
+	if (len > 256) {
+		errno = EIO;
+		return (-1);
+	}
+
+	ret = getentropy_getrandom(buf, len);
+	if (ret != -1)
+		return (ret);
+
+#ifdef HAVE_OPENSSL
+	if (RAND_bytes(buf, len) == 1)
+		return (0);
+#endif
+
+	ret = getentropy_sysctl(buf, len);
+	if (ret != -1)
+		return (ret);
+
+	/*
+	 * Try to get entropy with /dev/urandom
+	 */
+	ret = getentropy_urandom(buf, len, "/dev/urandom", 0);
+	if (ret != -1)
+		return (ret);
+
+	/*
+	 * Entropy collection via /dev/urandom has failed.
+	 *
+	 * No other API exists for collecting entropy, and we have no
+	 * failsafe way to get it that is not sensitive to resource exhaustion.
+	 *
+	 * We have very few options:
+	 *     - Even syslog_r is unsafe to call at this low level, so
+	 *	 there is no way to alert the user or program.
+	 *     - Cannot call abort() because some systems have unsafe
+	 *	 corefiles.
+	 *     - Could raise(SIGKILL) resulting in silent program termination.
+	 *     - Return EIO, to hint that arc4random's stir function
+	 *       should raise(SIGKILL)
+	 *     - Do the best under the circumstances....
+	 *
+	 * This code path exists to bring light to the issue that the OS
+	 * does not provide a failsafe API for entropy collection.
+	 *
+	 * We hope this demonstrates that the OS should consider
+	 * providing a new failsafe API which works in a chroot or
+	 * when file descriptors are exhausted.
+	 */
+#undef FAIL_INSTEAD_OF_TRYING_FALLBACK
+#ifdef FAIL_INSTEAD_OF_TRYING_FALLBACK
+	raise(SIGKILL);
+#endif
+	ret = getentropy_fallback(buf, len);
+	if (ret != -1)
+		return (ret);
+
+	errno = EIO;
+	return (ret);
+}
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+/*
+ * Basic validity checking; wish we could do better.
+ */
+static int
+gotdata(char *buf, size_t len)
+{
+	char	any_set = 0;
+	size_t	i;
+
+	for (i = 0; i < len; ++i)
+		any_set |= buf[i];
+	if (any_set == 0)
+		return (-1);
+	return (0);
+}
+
+static int
+getentropy_urandom(void *buf, size_t len, const char *path, int devfscheck)
+{
+	struct stat st;
+	size_t i;
+	int fd, flags;
+	int save_errno = errno;
+
+start:
+
+	/* We do not use O_NOFOLLOW since /dev/urandom is a link on Solaris. */
+	flags = O_RDONLY;
+#ifdef O_CLOEXEC
+	flags |= O_CLOEXEC;
+#endif
+	fd = open(path, flags, 0);
+	if (fd == -1) {
+		if (errno == EINTR)
+			goto start;
+		goto nodevrandom;
+	}
+#ifndef O_CLOEXEC
+	fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+#endif
+
+	/* Lightly verify that the device node looks OK */
+	if (fstat(fd, &st) == -1 || !S_ISCHR(st.st_mode)) {
+		close(fd);
+		goto nodevrandom;
+	}
+	for (i = 0; i < len; ) {
+		size_t wanted = len - i;
+		ssize_t ret = read(fd, (char *)buf + i, wanted);
+
+		if (ret == -1) {
+			if (errno == EAGAIN || errno == EINTR)
+				continue;
+			close(fd);
+			goto nodevrandom;
+		}
+		i += ret;
+	}
+	close(fd);
+	if (gotdata(buf, len) == 0) {
+		errno = save_errno;
+		return (0);		/* satisfied */
+	}
+nodevrandom:
+	errno = EIO;
+	return (-1);
+}
+
+#if defined(HAVE_SYSCTL) && defined(KERN_ARND)
+static int
+getentropy_sysctl(void *buf, size_t len)
+{
+	int save_errno = errno;
+	int mib[2];
+	size_t i;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_ARND;
+
+	for (i = 0; i < len; ) {
+		size_t chunk = len - i;
+
+		if (sysctl(mib, 2, (char *)buf + i, &chunk, NULL, 0) == -1)
+			goto sysctlfailed;
+		i += chunk;
+	}
+	if (gotdata(buf, len) == 0) {
+		errno = save_errno;
+		return (0);			/* satisfied */
+	}
+sysctlfailed:
+	errno = EIO;
+	return (-1);
+}
+#elif defined(SYS__sysctl) && defined(RANDOM_UUID)
+static int
+getentropy_sysctl(void *buf, size_t len)
+{
+	static int mib[3];
+	size_t i;
+	int save_errno = errno;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_RANDOM;
+	mib[2] = RANDOM_UUID;
+
+	for (i = 0; i < len; ) {
+		size_t chunk = min(len - i, 16);
+
+		/* SYS__sysctl because some systems already removed sysctl() */
+		struct __sysctl_args args = {
+			.name = mib,
+			.nlen = 3,
+			.oldval = (char *)buf + i,
+			.oldlenp = &chunk,
+		};
+		if (syscall(SYS__sysctl, &args) != 0)
+			goto sysctlfailed;
+		i += chunk;
+	}
+	if (gotdata(buf, len) == 0) {
+		errno = save_errno;
+		return (0);			/* satisfied */
+	}
+sysctlfailed:
+	errno = EIO;
+	return (-1);
+}
+#else
+static int
+getentropy_sysctl(void *buf, size_t len)
+{
+	errno = ENOTSUP;
+	return (-1);
+}
+#endif
+
+#if defined(SYS_getrandom) && defined(GRND_NONBLOCK)
+static int
+getentropy_getrandom(void *buf, size_t len)
+{
+	int pre_errno = errno;
+	int ret;
+
+        /*
+         * Try descriptor-less getrandom(), in non-blocking mode.
+         *
+         * The design of Linux getrandom is broken.  It has an
+         * uninitialized phase coupled with blocking behaviour, which
+         * is unacceptable from within a library at boot time without
+         * possible recovery. See http://bugs.python.org/issue26839#msg267745
+         */
+	do {
+		ret = syscall(SYS_getrandom, buf, len, GRND_NONBLOCK);
+	} while (ret == -1 && errno == EINTR);
+
+	if (ret < 0 || (size_t)ret != len)
+		return (-1);
+	errno = pre_errno;
+	return (0);
+}
+#else
+static int
+getentropy_getrandom(void *buf, size_t len)
+{
+	errno = ENOTSUP;
+	return (-1);
+}
+#endif
+
+#ifdef HAVE_CLOCK_GETTIME
+static const int cl[] = {
+	CLOCK_REALTIME,
+#ifdef CLOCK_MONOTONIC
+	CLOCK_MONOTONIC,
+#endif
+#ifdef CLOCK_MONOTONIC_RAW
+	CLOCK_MONOTONIC_RAW,
+#endif
+#ifdef CLOCK_TAI
+	CLOCK_TAI,
+#endif
+#ifdef CLOCK_VIRTUAL
+	CLOCK_VIRTUAL,
+#endif
+#ifdef CLOCK_UPTIME
+	CLOCK_UPTIME,
+#endif
+#ifdef CLOCK_PROCESS_CPUTIME_ID
+	CLOCK_PROCESS_CPUTIME_ID,
+#endif
+#ifdef CLOCK_THREAD_CPUTIME_ID
+	CLOCK_THREAD_CPUTIME_ID,
+#endif
+};
+#endif /* HAVE_CLOCK_GETTIME */
+
+#ifdef HAVE_DL_ITERATE_PHDR
+static int
+getentropy_phdr(struct dl_phdr_info *info, size_t size, void *data)
+{
+	struct sudo_digest *ctx = data;
+
+	sudo_digest_update(ctx, &info->dlpi_addr, sizeof (info->dlpi_addr));
+	return (0);
+}
+#endif
+
+static int
+getentropy_fallback(void *buf, size_t len)
+{
+	unsigned char *results = NULL;
+	int save_errno = errno, e, pgs = sysconf(_SC_PAGESIZE), faster = 0, repeat;
+	int ret = -1;
+	static int cnt;
+	struct timespec ts;
+	struct timeval tv;
+	struct rusage ru;
+	sigset_t set;
+	struct stat st;
+	struct sudo_digest *ctx;
+	static pid_t lastpid;
+	pid_t pid;
+	size_t i, ii, m, digest_len;
+	char *p;
+
+	if ((ctx = sudo_digest_alloc(SUDO_DIGEST_SHA512)) == NULL)
+		goto done;
+	digest_len = sudo_digest_getlen(SUDO_DIGEST_SHA512);
+	if (digest_len == (size_t)-1 || (results = malloc(digest_len)) == NULL)
+		goto done;
+
+	pid = getpid();
+	if (lastpid == pid) {
+		faster = 1;
+		repeat = 2;
+	} else {
+		faster = 0;
+		lastpid = pid;
+		repeat = REPEAT;
+	}
+	for (i = 0; i < len; ) {
+		int j;
+		for (j = 0; j < repeat; j++) {
+			HX((e = gettimeofday(&tv, NULL)) == -1, tv);
+			if (e != -1) {
+				cnt += (int)tv.tv_sec;
+				cnt += (int)tv.tv_usec;
+			}
+#ifdef HAVE_DL_ITERATE_PHDR
+			dl_iterate_phdr(getentropy_phdr, ctx);
+#endif
+
+#ifdef HAVE_CLOCK_GETTIME
+			for (ii = 0; ii < sizeof(cl)/sizeof(cl[0]); ii++)
+				HX(clock_gettime(cl[ii], &ts) == -1, ts);
+#endif /* HAVE_CLOCK_GETTIME */
+
+			HX((pid = getpid()) == -1, pid);
+			HX((pid = getsid(pid)) == -1, pid);
+			HX((pid = getppid()) == -1, pid);
+			HX((pid = getpgid(0)) == -1, pid);
+			HX((e = getpriority(0, 0)) == -1, e);
+
+			if (!faster) {
+				ts.tv_sec = 0;
+				ts.tv_nsec = 1;
+				(void) nanosleep(&ts, NULL);
+			}
+
+			HX(sigpending(&set) == -1, set);
+			HX(sigprocmask(SIG_BLOCK, NULL, &set) == -1, set);
+
+			HF(sudo_getentropy);	/* an addr in this library */
+			HF(printf);		/* an addr in libc */
+			p = (char *)&p;
+			HD(p);		/* an addr on stack */
+			p = (char *)&errno;
+			HD(p);		/* the addr of errno */
+
+			if (i == 0) {
+#ifdef HAVE_SYS_STATVFS_H
+				struct statvfs stvfs;
+#endif
+				struct termios tios;
+				off_t off;
+
+				/*
+				 * Prime-sized mappings encourage fragmentation;
+				 * thus exposing some address entropy.
+				 */
+				struct mm {
+					size_t	npg;
+					void	*p;
+				} mm[] =	 {
+					{ 17, MAP_FAILED }, { 3, MAP_FAILED },
+					{ 11, MAP_FAILED }, { 2, MAP_FAILED },
+					{ 5, MAP_FAILED }, { 3, MAP_FAILED },
+					{ 7, MAP_FAILED }, { 1, MAP_FAILED },
+					{ 57, MAP_FAILED }, { 3, MAP_FAILED },
+					{ 131, MAP_FAILED }, { 1, MAP_FAILED },
+				};
+
+				for (m = 0; m < sizeof mm/sizeof(mm[0]); m++) {
+					HX(mm[m].p = mmap_anon(NULL,
+					    mm[m].npg * pgs,
+					    PROT_READ|PROT_WRITE,
+					    MAP_PRIVATE,
+					    (off_t)0), mm[m].p);
+					if (mm[m].p != MAP_FAILED) {
+						size_t mo;
+
+						/* Touch some memory... */
+						p = mm[m].p;
+						mo = cnt %
+						    (mm[m].npg * pgs - 1);
+						p[mo] = 1;
+						cnt += (int)((long)(mm[m].p)
+						    / pgs);
+					}
+
+#ifdef HAVE_CLOCK_GETTIME
+					/* Check cnts and times... */
+					for (ii = 0; ii < sizeof(cl)/sizeof(cl[0]);
+					    ii++) {
+						HX((e = clock_gettime(cl[ii],
+						    &ts)) == -1, ts);
+						if (e != -1)
+							cnt += (int)ts.tv_nsec;
+					}
+#endif /* HAVE_CLOCK_GETTIME */
+
+					HX((e = getrusage(RUSAGE_SELF,
+					    &ru)) == -1, ru);
+					if (e != -1) {
+						cnt += (int)ru.ru_utime.tv_sec;
+						cnt += (int)ru.ru_utime.tv_usec;
+					}
+				}
+
+				for (m = 0; m < sizeof mm/sizeof(mm[0]); m++) {
+					if (mm[m].p != MAP_FAILED)
+						munmap(mm[m].p, mm[m].npg * pgs);
+					mm[m].p = MAP_FAILED;
+				}
+
+				HX(stat(".", &st) == -1, st);
+				HX(stat("/", &st) == -1, st);
+
+#ifdef HAVE_SYS_STATVFS_H
+				HX(statvfs(".", &stvfs) == -1, stvfs);
+				HX(statvfs("/", &stvfs) == -1, stvfs);
+#endif
+				HX((e = fstat(0, &st)) == -1, st);
+				if (e == -1) {
+					if (S_ISREG(st.st_mode) ||
+					    S_ISFIFO(st.st_mode) ||
+					    S_ISSOCK(st.st_mode)) {
+#ifdef HAVE_SYS_STATVFS_H
+						HX(fstatvfs(0, &stvfs) == -1,
+						    stvfs);
+#endif
+						HX((off = lseek(0, (off_t)0,
+						    SEEK_CUR)) < 0, off);
+					}
+					if (S_ISCHR(st.st_mode)) {
+						HX(tcgetattr(0, &tios) == -1,
+						    tios);
+#if 0
+					} else if (S_ISSOCK(st.st_mode)) {
+						struct sockaddr_storage ss;
+						socklen_t ssl;
+						memset(&ss, 0, sizeof ss);
+						ssl = sizeof(ss);
+						HX(getpeername(0,
+						    (void *)&ss, &ssl) == -1,
+						    ss);
+#endif
+					}
+				}
+
+				HX((e = getrusage(RUSAGE_CHILDREN,
+				    &ru)) == -1, ru);
+				if (e != -1) {
+					cnt += (int)ru.ru_utime.tv_sec;
+					cnt += (int)ru.ru_utime.tv_usec;
+				}
+			} else {
+				/* Subsequent hashes absorb previous result */
+				HR(results, digest_len);
+			}
+
+			HX((e = gettimeofday(&tv, NULL)) == -1, tv);
+			if (e != -1) {
+				cnt += (int)tv.tv_sec;
+				cnt += (int)tv.tv_usec;
+			}
+
+			HD(cnt);
+		}
+
+#ifdef HAVE_GETAUXVAL
+#ifdef AT_RANDOM
+		/* Not as random as you think but we take what we are given */
+		p = (char *) getauxval(AT_RANDOM);
+		if (p)
+			HR(p, 16);
+#endif
+#ifdef AT_SYSINFO_EHDR
+		p = (char *) getauxval(AT_SYSINFO_EHDR);
+		if (p)
+			HR(p, pgs);
+#endif
+#ifdef AT_BASE
+		p = (char *) getauxval(AT_BASE);
+		if (p)
+			HD(p);
+#endif
+#endif /* HAVE_GETAUXVAL  */
+
+		sudo_digest_final(ctx, results);
+		sudo_digest_reset(ctx);
+		memcpy((char *)buf + i, results, min(digest_len, len - i));
+		i += min(digest_len, len - i);
+	}
+	if (gotdata(buf, len) == 0) {
+		errno = save_errno;
+		ret = 0;		/* satisfied */
+	} else {
+		errno = EIO;
+	}
+done:
+	sudo_digest_free(ctx);
+	if (results != NULL)
+		freezero(results, digest_len);
+	return (ret);
+}
+
+#endif /* HAVE_GETENTROPY */
diff --git a/lib/util/getgrouplist.c b/lib/util/getgrouplist.c
new file mode 100644
index 0000000..b6170c6
--- /dev/null
+++ b/lib/util/getgrouplist.c
@@ -0,0 +1,529 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010, 2011, 2013-2021
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <grp.h>
+#include <limits.h>
+#include <unistd.h>
+#ifdef HAVE_NSS_SEARCH
+# include <errno.h>
+# include <limits.h>
+# include <nsswitch.h>
+# ifdef HAVE_NSS_DBDEFS_H
+#  include <nss_dbdefs.h>
+# else
+#  include "compat/nss_dbdefs.h"
+# endif
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+#ifndef HAVE_GETGROUPLIST
+int
+sudo_getgrouplist(const char *name, GETGROUPS_T basegid, GETGROUPS_T *groups,
+    int *ngroupsp)
+{
+    return sudo_getgrouplist2(name, basegid, &groups, ngroupsp);
+}
+#endif /* HAVE_GETGROUPLIST */
+
+#if defined(HAVE_GETGROUPLIST)
+
+#if defined(HAVE_GETGROUPLIST_2) && !HAVE_DECL_GETGROUPLIST_2
+int getgrouplist_2(const char *name, GETGROUPS_T basegid, GETGROUPS_T **groups);
+#endif /* HAVE_GETGROUPLIST_2 && !HAVE_DECL_GETGROUPLIST_2 */
+
+/*
+ * Extended getgrouplist(3) using getgrouplist(3) and getgrouplist_2(3)
+ */
+int
+sudo_getgrouplist2_v1(const char *name, GETGROUPS_T basegid,
+    GETGROUPS_T **groupsp, int *ngroupsp)
+{
+#ifdef __APPLE__
+    int *groups = (int *)*groupsp;
+#else
+    GETGROUPS_T *groups = *groupsp;
+#endif
+    int ngroups;
+#ifndef HAVE_GETGROUPLIST_2
+    int grpsize, tries;
+#endif
+    debug_decl(sudo_getgrouplist2, SUDO_DEBUG_UTIL);
+
+    /* For static group vector, just use getgrouplist(3). */
+    if (groups != NULL)
+	debug_return_int(getgrouplist(name, basegid, groups, ngroupsp));
+
+#ifdef HAVE_GETGROUPLIST_2
+    if ((ngroups = getgrouplist_2(name, basegid, groupsp)) == -1)
+	debug_return_int(-1);
+    *ngroupsp = ngroups;
+    debug_return_int(0);
+#else
+    grpsize = (int)sysconf(_SC_NGROUPS_MAX);
+    if (grpsize < 0)
+	grpsize = NGROUPS_MAX;
+    grpsize++;	/* include space for the primary gid */
+    /*
+     * It is possible to belong to more groups in the group database
+     * than NGROUPS_MAX.
+     */
+    for (tries = 0; tries < 10; tries++) {
+	free(groups);
+	groups = reallocarray(NULL, grpsize, sizeof(*groups));
+	if (groups == NULL)
+	    debug_return_int(-1);
+	ngroups = grpsize;
+	if (getgrouplist(name, basegid, groups, &ngroups) != -1) {
+	    *groupsp = groups;
+	    *ngroupsp = ngroups;
+	    debug_return_int(0);
+	}
+	if (ngroups == grpsize) {
+	    /* Failed for some reason other than ngroups too small. */
+	    break;
+	}
+	/* getgrouplist(3) set ngroups to the required length, use it. */
+	grpsize = ngroups;
+    }
+    free(groups);
+    debug_return_int(-1);
+#endif /* HAVE_GETGROUPLIST_2 */
+}
+
+#elif defined(HAVE_GETGRSET)
+
+/*
+ * Extended getgrouplist(3) using AIX getgrset(3)
+ */
+int
+sudo_getgrouplist2_v1(const char *name, GETGROUPS_T basegid,
+    GETGROUPS_T **groupsp, int *ngroupsp)
+{
+    GETGROUPS_T *groups = *groupsp;
+    char *cp, *last, *grset = NULL;
+    const char *errstr;
+    int ngroups = 1;
+    int grpsize = *ngroupsp;
+    int ret = -1;
+    gid_t gid;
+    debug_decl(sudo_getgrouplist2, SUDO_DEBUG_UTIL);
+
+#ifdef HAVE_SETAUTHDB
+    aix_setauthdb((char *) name, NULL);
+#endif
+    if ((grset = getgrset(name)) == NULL)
+	goto done;
+
+    if (groups == NULL) {
+	/* Dynamically-sized group vector, count groups and alloc. */
+	grpsize = 1;	/* reserve one for basegid */
+	if (*grset != '\0') {
+	    grpsize++;	/* at least one supplementary group */
+	    for (cp = grset; *cp != '\0'; cp++) {
+		if (*cp == ',')
+		    grpsize++;
+	    }
+	}
+	groups = reallocarray(NULL, grpsize, sizeof(*groups));
+	if (groups == NULL)
+	    debug_return_int(-1);
+    } else {
+	/* Static group vector. */
+	if (grpsize < 1)
+	    debug_return_int(-1);
+    }
+
+    /* We support BSD semantics where the first element is the base gid */
+    groups[0] = basegid;
+
+    for (cp = strtok_r(grset, ",", &last); cp != NULL; cp = strtok_r(NULL, ",", &last)) {
+	gid = sudo_strtoid(cp, &errstr);
+	if (errstr == NULL && gid != basegid) {
+	    if (ngroups == grpsize)
+		goto done;
+	    groups[ngroups++] = gid;
+	}
+    }
+    ret = 0;
+
+done:
+    free(grset);
+#ifdef HAVE_SETAUTHDB
+    aix_restoreauthdb();
+#endif
+    *groupsp = groups;
+    *ngroupsp = ngroups;
+
+    debug_return_int(ret);
+}
+
+#elif defined(HAVE_NSS_SEARCH)
+
+#ifndef ALIGNBYTES
+# define ALIGNBYTES	(sizeof(long) - 1L)
+#endif
+#ifndef ALIGN
+# define ALIGN(p)	(((unsigned long)(p) + ALIGNBYTES) & ~ALIGNBYTES)
+#endif
+
+#if defined(HAVE__NSS_INITF_GROUP) || defined(HAVE___NSS_INITF_GROUP)
+extern void _nss_initf_group(nss_db_params_t *params);
+#else
+static void
+_nss_initf_group(nss_db_params_t *params)
+{
+    params->name = NSS_DBNAM_GROUP;
+    params->default_config = NSS_DEFCONF_GROUP;
+}
+#endif
+
+/*
+ * Convert a groups file string (instr) to a struct group (ent) using
+ * buf for storage.  
+ */
+static int
+str2grp(const char *instr, int inlen, void *ent, char *buf, int buflen)
+{
+    struct group *grp = ent;
+    char *cp, *fieldsep = buf;
+    char **gr_mem, **gr_end;
+    const char *errstr;
+    int yp = 0;
+    id_t id;
+    debug_decl(str2grp, SUDO_DEBUG_UTIL);
+
+    /* Must at least have space to copy instr -> buf. */
+    if (inlen >= buflen)
+	debug_return_int(NSS_STR_PARSE_ERANGE);
+    
+    /* Paranoia: buf and instr should be distinct. */
+    if (buf != instr) {
+	memmove(buf, instr, inlen);
+	buf[inlen] = '\0';
+    }
+
+    if ((fieldsep = strchr(cp = fieldsep, ':')) == NULL)
+	debug_return_int(NSS_STR_PARSE_PARSE);
+    *fieldsep++ = '\0';
+    grp->gr_name = cp;
+
+    /* Check for YP inclusion/exclusion entries. */
+    if (*cp == '+' || *cp == '-') {
+	/* Only the name is required for YP inclusion/exclusion entries. */
+	grp->gr_passwd = (char *)"";
+	grp->gr_gid = 0;
+	grp->gr_mem = NULL;
+	yp = 1;
+    }
+
+    if ((fieldsep = strchr(cp = fieldsep, ':')) == NULL)
+	debug_return_int(yp ? NSS_STR_PARSE_SUCCESS : NSS_STR_PARSE_PARSE);
+    *fieldsep++ = '\0';
+    grp->gr_passwd = cp;
+
+    if ((fieldsep = strchr(cp = fieldsep, ':')) == NULL)
+	debug_return_int(yp ? NSS_STR_PARSE_SUCCESS : NSS_STR_PARSE_PARSE);
+    *fieldsep++ = '\0';
+    id = sudo_strtoid(cp, &errstr);
+    if (errstr != NULL) {
+	/*
+	 * A range error is always a fatal error, but ignore garbage
+	 * at the end of YP entries since it has no meaning.
+	 */
+	if (errno == ERANGE)
+	    debug_return_int(NSS_STR_PARSE_ERANGE);
+	debug_return_int(yp ? NSS_STR_PARSE_SUCCESS : NSS_STR_PARSE_PARSE);
+    }
+#ifdef GID_NOBODY
+    /* Negative gids get mapped to nobody on Solaris. */
+    if (*cp == '-' && id != 0)
+	grp->gr_gid = GID_NOBODY;
+    else
+#endif
+	grp->gr_gid = (gid_t)id;
+
+    /* Store group members, taking care to use proper alignment. */
+    grp->gr_mem = NULL;
+    if (*fieldsep != '\0') {
+	grp->gr_mem = gr_mem = (char **)ALIGN(buf + inlen + 1);
+	gr_end = (char **)((unsigned long)(buf + buflen) & ~ALIGNBYTES) - 1;
+	for (;;) {
+	    if (gr_mem >= gr_end)
+		debug_return_int(NSS_STR_PARSE_ERANGE);	/* out of space! */
+	    *gr_mem++ = cp;
+	    if (fieldsep == NULL)
+		break;
+	    if ((fieldsep = strchr(cp = fieldsep, ',')) != NULL)
+		*fieldsep++ = '\0';
+	}
+	*gr_mem = NULL;
+    }
+    debug_return_int(NSS_STR_PARSE_SUCCESS);
+}
+
+static nss_status_t
+process_cstr(const char *instr, int inlen, struct nss_groupsbymem *gbm,
+    int dynamic)
+{
+    const char *user = gbm->username;
+    nss_status_t ret = NSS_NOTFOUND;
+    nss_XbyY_buf_t *buf;
+    struct group *grp;
+    char **gr_mem;
+    int	error, i;
+    debug_decl(process_cstr, SUDO_DEBUG_UTIL);
+
+    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: parsing %.*s", __func__,
+	inlen, instr);
+
+    /* Hack to let us check whether the query was handled by nscd or us. */
+    if (gbm->force_slow_way != 0)
+	gbm->force_slow_way = 2;
+
+    buf = _nss_XbyY_buf_alloc(sizeof(struct group), NSS_BUFLEN_GROUP);
+    if (buf == NULL)
+	debug_return_int(NSS_UNAVAIL);
+
+    /* Parse groups file string -> struct group. */
+    grp = buf->result;
+    error = (*gbm->str2ent)(instr, inlen, grp, buf->buffer, buf->buflen);
+    if (error != NSS_STR_PARSE_SUCCESS || grp->gr_mem == NULL)
+	goto done;
+
+    for (gr_mem = grp->gr_mem; *gr_mem != NULL; gr_mem++) {
+	if (strcmp(*gr_mem, user) == 0) {
+	    const int numgids = MIN(gbm->numgids, gbm->maxgids);
+
+	    /* Append to gid_array unless gr_gid is a dupe. */
+	    for (i = 0; i < numgids; i++) {
+		if (gbm->gid_array[i] == grp->gr_gid)
+		    goto done;			/* already present */
+	    }
+	    if (i == gbm->maxgids && dynamic) {
+		GETGROUPS_T *tmp = reallocarray(gbm->gid_array, gbm->maxgids,
+		    2 * sizeof(GETGROUPS_T));
+		if (tmp == NULL) {
+		    /* Out of memory, just return what we have. */
+		    dynamic = 0;
+		} else {
+		    gbm->gid_array = tmp;
+		    gbm->maxgids <<= 1;
+		}
+	    }
+	    /* Store gid if there is space. */
+	    if (i < gbm->maxgids)
+		gbm->gid_array[i] = grp->gr_gid;
+	    /* Always increment numgids so we can detect when out of space. */
+	    gbm->numgids++;
+	    goto done;
+	}
+    }
+done:
+    _nss_XbyY_buf_free(buf);
+    debug_return_int(ret);
+}
+
+static nss_status_t
+process_cstr_static(const char *instr, int inlen, struct nss_groupsbymem *gbm)
+{
+    return process_cstr(instr, inlen, gbm, 0);
+}
+
+static nss_status_t
+process_cstr_dynamic(const char *instr, int inlen, struct nss_groupsbymem *gbm)
+{
+    return process_cstr(instr, inlen, gbm, 1);
+}
+
+/*
+ * Extended getgrouplist(3) using nss_search(3)
+ */
+int
+sudo_getgrouplist2_v1(const char *name, GETGROUPS_T basegid,
+    GETGROUPS_T **groupsp, int *ngroupsp)
+{
+    struct nss_groupsbymem gbm;
+    static DEFINE_NSS_DB_ROOT(db_root);
+    debug_decl(sudo_getgrouplist2, SUDO_DEBUG_UTIL);
+
+    memset(&gbm, 0, sizeof(gbm));
+    gbm.username = name;
+    gbm.gid_array = *groupsp;
+    gbm.maxgids = *ngroupsp;
+    gbm.numgids = 1; /* for basegid */
+    gbm.force_slow_way = 1;
+    gbm.str2ent = str2grp;
+
+    if (gbm.gid_array == NULL) {
+	/* Dynamically-sized group vector. */
+	gbm.maxgids = (int)sysconf(_SC_NGROUPS_MAX);
+	if (gbm.maxgids < 0)
+	    gbm.maxgids = NGROUPS_MAX;
+	gbm.gid_array = reallocarray(NULL, gbm.maxgids, 4 * sizeof(GETGROUPS_T));
+	if (gbm.gid_array == NULL)
+	    debug_return_int(-1);
+	gbm.maxgids <<= 2;
+	gbm.process_cstr = process_cstr_dynamic;
+    } else {
+	/* Static group vector. */
+	if (gbm.maxgids <= 0)
+	    debug_return_int(-1);
+	gbm.process_cstr = process_cstr_static;
+    }
+
+    /* We support BSD semantics where the first element is the base gid */
+    gbm.gid_array[0] = basegid;
+
+    /*
+     * Can't use nss_search return value since it may return NSS_UNAVAIL
+     * when no nsswitch.conf entry (e.g. compat mode).
+     */
+    for (;;) {
+	GETGROUPS_T *tmp;
+
+	(void)nss_search(&db_root, _nss_initf_group, NSS_DBOP_GROUP_BYMEMBER,
+	    &gbm);
+
+	/*
+	 * If this was a statically-sized group vector or nscd was not used
+	 * we are done.
+	 */
+	if (gbm.process_cstr != process_cstr_dynamic || gbm.force_slow_way == 2)
+	    break;
+
+	/*
+	 * If gid_array is full and the query was handled by nscd, there
+	 * may be more data, so double gid_array and try again.
+	 */
+	if (gbm.numgids != gbm.maxgids)
+	    break;
+
+	tmp = reallocarray(gbm.gid_array, gbm.maxgids, 2 * sizeof(GETGROUPS_T));
+	if (tmp == NULL) {
+	    free(gbm.gid_array);
+	    debug_return_int(-1);
+	}
+	gbm.gid_array = tmp;
+	gbm.maxgids <<= 1;
+    }
+
+    /* Note: we can only detect a too-small group list if nscd is not used. */
+    *groupsp = gbm.gid_array;
+    if (gbm.numgids <= gbm.maxgids) {
+        *ngroupsp = gbm.numgids;
+	debug_return_int(0);
+    }
+    *ngroupsp = gbm.maxgids;
+    debug_return_int(-1);
+}
+
+#else /* !HAVE_GETGROUPLIST && !HAVE_GETGRSET && !HAVE__GETGROUPSBYMEMBER */
+
+/*
+ * Extended getgrouplist(3) using getgrent(3)
+ */
+int
+sudo_getgrouplist2_v1(const char *name, GETGROUPS_T basegid,
+    GETGROUPS_T **groupsp, int *ngroupsp)
+{
+    GETGROUPS_T *groups = *groupsp;
+    int grpsize = *ngroupsp;
+    int i, ngroups = 1;
+    int ret = -1;
+    struct group *grp;
+    debug_decl(sudo_getgrouplist2, SUDO_DEBUG_UTIL);
+
+    if (groups == NULL) {
+	/* Dynamically-sized group vector. */
+	grpsize = (int)sysconf(_SC_NGROUPS_MAX);
+	if (grpsize < 0)
+	    grpsize = NGROUPS_MAX;
+	groups = reallocarray(NULL, grpsize, 4 * sizeof(*groups));
+	if (groups == NULL)
+	    debug_return_int(-1);
+	grpsize <<= 2;
+    } else {
+	/* Static group vector. */
+	if (grpsize < 1)
+	    debug_return_int(-1);
+    }
+
+    /* We support BSD semantics where the first element is the base gid */
+    groups[0] = basegid;
+
+    setgrent();
+    while ((grp = getgrent()) != NULL) {
+	if (grp->gr_gid == basegid || grp->gr_mem == NULL)
+	    continue;
+
+	for (i = 0; grp->gr_mem[i] != NULL; i++) {
+	    if (strcmp(name, grp->gr_mem[i]) == 0)
+		break;
+	}
+	if (grp->gr_mem[i] == NULL)
+	    continue; /* user not found */
+
+	/* Only add if it is not the same as an existing gid */
+	for (i = 0; i < ngroups; i++) {
+	    if (grp->gr_gid == groups[i])
+		break;
+	}
+	if (i == ngroups) {
+	    if (ngroups == grpsize) {
+		GETGROUPS_T *tmp;
+
+		if (*groupsp != NULL) {
+		    /* Static group vector. */
+		    goto done;
+		}
+		tmp = reallocarray(groups, grpsize, 2 * sizeof(*groups));
+		if (tmp == NULL) {
+		    free(groups);
+		    groups = NULL;
+		    ngroups = 0;
+		    goto done;
+		}
+		groups = tmp;
+		grpsize <<= 1;
+	    }
+	    groups[ngroups++] = grp->gr_gid;
+	}
+    }
+    ret = 0;
+
+done:
+    endgrent();
+    *groupsp = groups;
+    *ngroupsp = ngroups;
+
+    debug_return_int(ret);
+}
+#endif /* !HAVE_GETGROUPLIST && !HAVE_GETGRSET && !HAVE__GETGROUPSBYMEMBER */
diff --git a/lib/util/gethostname.c b/lib/util/gethostname.c
new file mode 100644
index 0000000..894aefa
--- /dev/null
+++ b/lib/util/gethostname.c
@@ -0,0 +1,59 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+/*
+ * Return a malloc()ed copy of the system hostname, or NULL if 
+ * malloc() or gethostname() fails.
+ */
+char *
+sudo_gethostname_v1(void)
+{
+    char *hname;
+    size_t host_name_max;
+
+#ifdef _SC_HOST_NAME_MAX
+    host_name_max = (size_t)sysconf(_SC_HOST_NAME_MAX);
+    if (host_name_max == (size_t)-1)
+#endif
+	host_name_max = 255;	/* POSIX and historic BSD */
+
+    hname = malloc(host_name_max + 1);
+    if (hname != NULL) {
+	if (gethostname(hname, host_name_max + 1) == 0 && *hname != '\0') {
+	    /* Old gethostname() may not NUL-terminate if there is no room. */
+	    hname[host_name_max] = '\0';
+	} else {
+	    free(hname);
+	    hname = NULL;
+	}
+    }
+    return hname;
+}
diff --git a/lib/util/getopt_long.c b/lib/util/getopt_long.c
new file mode 100644
index 0000000..15b04ee
--- /dev/null
+++ b/lib/util/getopt_long.c
@@ -0,0 +1,624 @@
+/*	$OpenBSD: getopt_long.c,v 1.26 2013/06/08 22:47:56 millert Exp $	*/
+/*	$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $	*/
+/*	$FreeBSD: head/lib/libc/stdlib/getopt_long.c 236936 2012-06-11 22:25:20Z delphij $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2002 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Dieter Baron and Thomas Klausner.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "compat/getopt.h"
+
+#define GNU_COMPATIBLE		/* Be more compatible with GNU getopt. */
+
+#ifdef REPLACE_GETOPT
+int	opterr = 1;		/* if error message should be printed */
+int	optind = 1;		/* index into parent argv vector */
+int	optopt = '?';		/* character checked for validity */
+char    *optarg;		/* argument associated with option */
+#else
+extern int	opterr;		/* if error message should be printed */
+extern int	optind;		/* index into parent argv vector */
+extern int	optopt;		/* character checked for validity */
+extern char    *optarg;		/* argument associated with option */
+#endif
+#if !defined(REPLACE_GETOPT) && !defined(HAVE_OPTRESET)
+int	optreset;		/* reset getopt */
+#endif
+
+#define PRINT_ERROR	((opterr) && (*options != ':'))
+
+#define FLAG_PERMUTE	0x01	/* permute non-options to the end of argv */
+#define FLAG_ALLARGS	0x02	/* treat non-options as args to option "-1" */
+#define FLAG_LONGONLY	0x04	/* operate as getopt_long_only */
+
+/* return values */
+#define	BADCH		(int)'?'
+#define	BADARG		((*options == ':') ? (int)':' : (int)'?')
+#define	INORDER 	(int)1
+
+#define	EMSG		(char *)""
+
+#ifdef GNU_COMPATIBLE
+#define NO_PREFIX	(-1)
+#define D_PREFIX	0
+#define DD_PREFIX	1
+#define W_PREFIX	2
+#endif
+
+static int getopt_internal(int, char * const *, const char *,
+			   const struct option *, int *, int);
+static int parse_long_options(char * const *, const char *,
+			      const struct option *, int *, int, int);
+static int gcd(int, int);
+static void permute_args(int, int, int, char * const *);
+
+static char *place = EMSG; /* option letter processing */
+
+/* XXX: set optreset to 1 rather than these two */
+static int nonopt_start = -1; /* first non option argument (for permute) */
+static int nonopt_end = -1;   /* first option after non options (for permute) */
+
+/* Error messages */
+static const char recargchar[] = "option requires an argument -- %c";
+static const char illoptchar[] = "illegal option -- %c"; /* From P1003.2 */
+#ifdef GNU_COMPATIBLE
+static int dash_prefix = NO_PREFIX;
+static const char gnuoptchar[] = "invalid option -- %c";
+
+static const char recargstring[] = "option `%s%s' requires an argument";
+static const char ambig[] = "option `%s%.*s' is ambiguous";
+static const char noarg[] = "option `%s%.*s' doesn't allow an argument";
+static const char illoptstring[] = "unrecognized option `%s%s'";
+#else
+static const char recargstring[] = "option requires an argument -- %s";
+static const char ambig[] = "ambiguous option -- %.*s";
+static const char noarg[] = "option doesn't take an argument -- %.*s";
+static const char illoptstring[] = "unknown option -- %s";
+#endif
+
+/*
+ * Compute the greatest common divisor of a and b.
+ */
+static int
+gcd(int a, int b)
+{
+	int c;
+
+	c = a % b;
+	while (c != 0) {
+		a = b;
+		b = c;
+		c = a % b;
+	}
+
+	return (b);
+}
+
+/*
+ * Exchange the block from nonopt_start to nonopt_end with the block
+ * from nonopt_end to opt_end (keeping the same order of arguments
+ * in each block).
+ */
+static void
+permute_args(int panonopt_start, int panonopt_end, int opt_end,
+	char * const *nargv)
+{
+	int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
+	char *swap;
+
+	/*
+	 * compute lengths of blocks and number and size of cycles
+	 */
+	nnonopts = panonopt_end - panonopt_start;
+	nopts = opt_end - panonopt_end;
+	ncycle = gcd(nnonopts, nopts);
+	cyclelen = (opt_end - panonopt_start) / ncycle;
+
+	for (i = 0; i < ncycle; i++) {
+		cstart = panonopt_end+i;
+		pos = cstart;
+		for (j = 0; j < cyclelen; j++) {
+			if (pos >= panonopt_end)
+				pos -= nnonopts;
+			else
+				pos += nopts;
+			swap = nargv[pos];
+			/* LINTED const cast */
+			((char **) nargv)[pos] = nargv[cstart];
+			/* LINTED const cast */
+			((char **)nargv)[cstart] = swap;
+		}
+	}
+}
+
+/*
+ * parse_long_options --
+ *	Parse long options in argc/argv argument vector.
+ * Returns -1 if short_too is set and the option does not match long_options.
+ */
+static int
+parse_long_options(char * const *nargv, const char *options,
+	const struct option *long_options, int *idx, int short_too, int flags)
+{
+	char *current_argv, *has_equal;
+#ifdef GNU_COMPATIBLE
+	const char *current_dash;
+#endif
+	size_t current_argv_len;
+	int i, match, exact_match, second_partial_match;
+
+	current_argv = place;
+#ifdef GNU_COMPATIBLE
+	switch (dash_prefix) {
+		case D_PREFIX:
+			current_dash = "-";
+			break;
+		case DD_PREFIX:
+			current_dash = "--";
+			break;
+		case W_PREFIX:
+			current_dash = "-W ";
+			break;
+		default:
+			current_dash = "";
+			break;
+	}
+#endif
+	match = -1;
+	exact_match = 0;
+	second_partial_match = 0;
+
+	optind++;
+
+	if ((has_equal = strchr(current_argv, '=')) != NULL) {
+		/* argument found (--option=arg) */
+		current_argv_len = has_equal - current_argv;
+		has_equal++;
+	} else
+		current_argv_len = strlen(current_argv);
+
+	for (i = 0; long_options[i].name; i++) {
+		/* find matching long option */
+		if (strncmp(current_argv, long_options[i].name,
+		    current_argv_len))
+			continue;
+
+		if (strlen(long_options[i].name) == current_argv_len) {
+			/* exact match */
+			match = i;
+			exact_match = 1;
+			break;
+		}
+		/*
+		 * If this is a known short option, don't allow
+		 * a partial match of a single character.
+		 */
+		if (short_too && current_argv_len == 1)
+			continue;
+
+		if (match == -1)        /* first partial match */
+			match = i;
+		else if ((flags & FLAG_LONGONLY) ||
+			 long_options[i].has_arg !=
+			     long_options[match].has_arg ||
+			 long_options[i].flag != long_options[match].flag ||
+			 long_options[i].val != long_options[match].val)
+			second_partial_match = 1;
+	}
+	if (!exact_match && second_partial_match) {
+		/* ambiguous abbreviation */
+		if (PRINT_ERROR)
+			sudo_warnx(ambig,
+#ifdef GNU_COMPATIBLE
+			     current_dash,
+#endif
+			     (int)current_argv_len,
+			     current_argv);
+		optopt = 0;
+		return (BADCH);
+	}
+	if (match != -1) {		/* option found */
+		if (long_options[match].has_arg == no_argument
+		    && has_equal) {
+			if (PRINT_ERROR)
+				sudo_warnx(noarg,
+#ifdef GNU_COMPATIBLE
+				     current_dash,
+#endif
+				     (int)current_argv_len,
+				     current_argv);
+			/*
+			 * XXX: GNU sets optopt to val regardless of flag
+			 */
+			if (long_options[match].flag == NULL)
+				optopt = long_options[match].val;
+			else
+				optopt = 0;
+#ifdef GNU_COMPATIBLE
+			return (BADCH);
+#else
+			return (BADARG);
+#endif
+		}
+		if (long_options[match].has_arg == required_argument ||
+		    long_options[match].has_arg == optional_argument) {
+			if (has_equal)
+				optarg = has_equal;
+			else if (long_options[match].has_arg ==
+			    required_argument) {
+				/*
+				 * optional argument doesn't use next nargv
+				 */
+				optarg = nargv[optind++];
+			}
+		}
+		if ((long_options[match].has_arg == required_argument)
+		    && (optarg == NULL)) {
+			/*
+			 * Missing argument; leading ':' indicates no error
+			 * should be generated.
+			 */
+			if (PRINT_ERROR)
+				sudo_warnx(recargstring,
+#ifdef GNU_COMPATIBLE
+				    current_dash,
+#endif
+				    current_argv);
+			/*
+			 * XXX: GNU sets optopt to val regardless of flag
+			 */
+			if (long_options[match].flag == NULL)
+				optopt = long_options[match].val;
+			else
+				optopt = 0;
+			--optind;
+			return (BADARG);
+		}
+	} else {			/* unknown option */
+		if (short_too) {
+			--optind;
+			return (-1);
+		}
+		if (PRINT_ERROR)
+			sudo_warnx(illoptstring,
+#ifdef GNU_COMPATIBLE
+			      current_dash,
+#endif
+			      current_argv);
+		optopt = 0;
+		return (BADCH);
+	}
+	if (idx)
+		*idx = match;
+	if (long_options[match].flag) {
+		*long_options[match].flag = long_options[match].val;
+		return (0);
+	} else
+		return (long_options[match].val);
+}
+
+/*
+ * getopt_internal --
+ *	Parse argc/argv argument vector.  Called by user level routines.
+ */
+static int
+getopt_internal(int nargc, char * const *nargv, const char *options,
+	const struct option *long_options, int *idx, int flags)
+{
+	char *oli;				/* option letter list index */
+	int optchar, short_too;
+	int posixly_correct;	/* no static, can be changed on the fly */
+
+	if (options == NULL)
+		return (-1);
+
+	/*
+	 * Disable GNU extensions if POSIXLY_CORRECT is set or options
+	 * string begins with a '+'.
+	 */
+	posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
+#ifdef GNU_COMPATIBLE
+	if (*options == '-')
+		flags |= FLAG_ALLARGS;
+	else if (posixly_correct || *options == '+')
+		flags &= ~FLAG_PERMUTE;
+#else
+	if (posixly_correct || *options == '+')
+		flags &= ~FLAG_PERMUTE;
+	else if (*options == '-')
+		flags |= FLAG_ALLARGS;
+#endif
+	if (*options == '+' || *options == '-')
+		options++;
+
+	/*
+	 * XXX Some GNU programs (like cvs) set optind to 0 instead of
+	 * XXX using optreset.  Work around this braindamage.
+	 */
+	if (optind == 0)
+		optind = optreset = 1;
+
+	optarg = NULL;
+	if (optreset)
+		nonopt_start = nonopt_end = -1;
+start:
+	if (optreset || !*place) {		/* update scanning pointer */
+		optreset = 0;
+		if (optind >= nargc) {          /* end of argument vector */
+			place = EMSG;
+			if (nonopt_end != -1) {
+				/* do permutation, if we have to */
+				permute_args(nonopt_start, nonopt_end,
+				    optind, nargv);
+				optind -= nonopt_end - nonopt_start;
+			}
+			else if (nonopt_start != -1) {
+				/*
+				 * If we skipped non-options, set optind
+				 * to the first of them.
+				 */
+				optind = nonopt_start;
+			}
+			nonopt_start = nonopt_end = -1;
+			return (-1);
+		}
+		if (*(place = nargv[optind]) != '-' ||
+#ifdef GNU_COMPATIBLE
+		    place[1] == '\0') {
+#else
+		    (place[1] == '\0' && strchr(options, '-') == NULL)) {
+#endif
+			place = EMSG;		/* found non-option */
+			if (flags & FLAG_ALLARGS) {
+				/*
+				 * GNU extension:
+				 * return non-option as argument to option 1
+				 */
+				optarg = nargv[optind++];
+				return (INORDER);
+			}
+			if (!(flags & FLAG_PERMUTE)) {
+				/*
+				 * If no permutation wanted, stop parsing
+				 * at first non-option.
+				 */
+				return (-1);
+			}
+			/* do permutation */
+			if (nonopt_start == -1)
+				nonopt_start = optind;
+			else if (nonopt_end != -1) {
+				permute_args(nonopt_start, nonopt_end,
+				    optind, nargv);
+				nonopt_start = optind -
+				    (nonopt_end - nonopt_start);
+				nonopt_end = -1;
+			}
+			optind++;
+			/* process next argument */
+			goto start;
+		}
+		if (nonopt_start != -1 && nonopt_end == -1)
+			nonopt_end = optind;
+
+		/*
+		 * If we have "-" do nothing, if "--" we are done.
+		 */
+		if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
+			optind++;
+			place = EMSG;
+			/*
+			 * We found an option (--), so if we skipped
+			 * non-options, we have to permute.
+			 */
+			if (nonopt_end != -1) {
+				permute_args(nonopt_start, nonopt_end,
+				    optind, nargv);
+				optind -= nonopt_end - nonopt_start;
+			}
+			nonopt_start = nonopt_end = -1;
+			return (-1);
+		}
+	}
+
+	/*
+	 * Check long options if:
+	 *  1) we were passed some
+	 *  2) the arg is not just "-"
+	 *  3) either the arg starts with -- we are getopt_long_only()
+	 */
+	if (long_options != NULL && place != nargv[optind] &&
+	    (*place == '-' || (flags & FLAG_LONGONLY))) {
+		short_too = 0;
+#ifdef GNU_COMPATIBLE
+		dash_prefix = D_PREFIX;
+#endif
+		if (*place == '-') {
+			place++;		/* --foo long option */
+#ifdef GNU_COMPATIBLE
+			dash_prefix = DD_PREFIX;
+#endif
+		} else if (*place != ':' && strchr(options, *place) != NULL)
+			short_too = 1;		/* could be short option too */
+
+		optchar = parse_long_options(nargv, options, long_options,
+		    idx, short_too, flags);
+		if (optchar != -1) {
+			place = EMSG;
+			return (optchar);
+		}
+	}
+
+	if ((optchar = (int)*place++) == (int)':' ||
+	    (optchar == (int)'-' && *place != '\0') ||
+	    (oli = strchr(options, optchar)) == NULL) {
+		/*
+		 * If the user specified "-" and  '-' isn't listed in
+		 * options, return -1 (non-option) as per POSIX.
+		 * Otherwise, it is an unknown option character (or ':').
+		 */
+		if (optchar == (int)'-' && *place == '\0')
+			return (-1);
+		if (!*place)
+			++optind;
+#ifdef GNU_COMPATIBLE
+		if (PRINT_ERROR)
+			sudo_warnx(posixly_correct ? illoptchar : gnuoptchar,
+			      optchar);
+#else
+		if (PRINT_ERROR)
+			sudo_warnx(illoptchar, optchar);
+#endif
+		optopt = optchar;
+		return (BADCH);
+	}
+	if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
+		/* -W long-option */
+		if (*place)			/* no space */
+			/* NOTHING */;
+		else if (++optind >= nargc) {	/* no arg */
+			place = EMSG;
+			if (PRINT_ERROR)
+				sudo_warnx(recargchar, optchar);
+			optopt = optchar;
+			return (BADARG);
+		} else				/* white space */
+			place = nargv[optind];
+#ifdef GNU_COMPATIBLE
+		dash_prefix = W_PREFIX;
+#endif
+		optchar = parse_long_options(nargv, options, long_options,
+		    idx, 0, flags);
+		place = EMSG;
+		return (optchar);
+	}
+	if (*++oli != ':') {			/* doesn't take argument */
+		if (!*place)
+			++optind;
+	} else {				/* takes (optional) argument */
+		optarg = NULL;
+		if (*place)			/* no white space */
+			optarg = place;
+		else if (oli[1] != ':') {	/* arg not optional */
+			if (++optind >= nargc) {	/* no arg */
+				place = EMSG;
+				if (PRINT_ERROR)
+					sudo_warnx(recargchar, optchar);
+				optopt = optchar;
+				return (BADARG);
+			} else
+				optarg = nargv[optind];
+		}
+		place = EMSG;
+		++optind;
+	}
+	/* dump back option letter */
+	return (optchar);
+}
+
+#ifdef REPLACE_GETOPT
+/*
+ * getopt --
+ *	Parse argc/argv argument vector.
+ */
+int
+sudo_getopt(int nargc, char * const *nargv, const char *options)
+{
+
+	/*
+	 * We don't pass FLAG_PERMUTE to getopt_internal() since
+	 * the BSD getopt(3) (unlike GNU) has never done this.
+	 *
+	 * Furthermore, since many privileged programs call getopt()
+	 * before dropping privileges it makes sense to keep things
+	 * as simple (and bug-free) as possible.
+	 */
+	return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
+}
+#endif /* REPLACE_GETOPT */
+
+/*
+ * getopt_long --
+ *	Parse argc/argv argument vector.
+ */
+int
+sudo_getopt_long(int nargc, char * const *nargv, const char *options,
+	const struct option *long_options, int *idx)
+{
+
+	return (getopt_internal(nargc, nargv, options, long_options, idx,
+	    FLAG_PERMUTE));
+}
+
+/*
+ * getopt_long_only --
+ *	Parse argc/argv argument vector.
+ */
+int
+sudo_getopt_long_only(int nargc, char * const *nargv, const char *options,
+	const struct option *long_options, int *idx)
+{
+
+	return (getopt_internal(nargc, nargv, options, long_options, idx,
+	    FLAG_PERMUTE|FLAG_LONGONLY));
+}
diff --git a/lib/util/gettime.c b/lib/util/gettime.c
new file mode 100644
index 0000000..e7161b5
--- /dev/null
+++ b/lib/util/gettime.c
@@ -0,0 +1,224 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/time.h>
+#include <time.h>
+
+#if defined(__MACH__) && !defined(HAVE_CLOCK_GETTIME)
+# include <mach/mach.h>
+# include <mach/mach_time.h>
+# include <mach/clock.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * On Linux and FreeBSD, CLOCK_MONOTONIC does not run while sleeping.
+ * Linux provides CLOCK_BOOTTIME which runs while sleeping (FreeBSD does not).
+ * Some systems provide CLOCK_UPTIME which only runs while awake.
+ */
+#if defined(CLOCK_BOOTTIME)
+# define SUDO_CLOCK_BOOTTIME	CLOCK_BOOTTIME
+#elif defined(CLOCK_MONOTONIC_RAW)
+# define SUDO_CLOCK_BOOTTIME	CLOCK_MONOTONIC_RAW
+#elif defined(CLOCK_MONOTONIC)
+# define SUDO_CLOCK_BOOTTIME	CLOCK_MONOTONIC
+#endif
+#if defined(CLOCK_UPTIME_RAW)
+# define SUDO_CLOCK_UPTIME	CLOCK_UPTIME_RAW
+#elif defined(CLOCK_UPTIME)
+# define SUDO_CLOCK_UPTIME	CLOCK_UPTIME
+#elif defined(CLOCK_MONOTONIC)
+# define SUDO_CLOCK_UPTIME	CLOCK_MONOTONIC
+#endif
+
+/*
+ * Wall clock time, may run backward.
+ */
+#if defined(HAVE_CLOCK_GETTIME)
+int
+sudo_gettime_real_v1(struct timespec *ts)
+{
+    debug_decl(sudo_gettime_real, SUDO_DEBUG_UTIL);
+
+    if (clock_gettime(CLOCK_REALTIME, ts) == -1) {
+	struct timeval tv;
+
+	sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "clock_gettime(CLOCK_REALTIME) failed, trying gettimeofday()");
+	if (gettimeofday(&tv, NULL) == -1)
+	    debug_return_int(-1);
+	TIMEVAL_TO_TIMESPEC(&tv, ts);
+    }
+    debug_return_int(0);
+}
+#else
+int
+sudo_gettime_real_v1(struct timespec *ts)
+{
+    struct timeval tv;
+    debug_decl(sudo_gettime_real, SUDO_DEBUG_UTIL);
+
+    if (gettimeofday(&tv, NULL) == -1)
+	debug_return_int(-1);
+    TIMEVAL_TO_TIMESPEC(&tv, ts);
+    debug_return_int(0);
+}
+#endif
+
+/*
+ * Monotonic time, only runs forward.
+ * We use a timer that only increments while sleeping, if possible.
+ */
+#if defined(HAVE_CLOCK_GETTIME) && defined(SUDO_CLOCK_BOOTTIME)
+int
+sudo_gettime_mono_v1(struct timespec *ts)
+{
+    static int has_monoclock = -1;
+    debug_decl(sudo_gettime_mono, SUDO_DEBUG_UTIL);
+
+    /* Check whether the kernel/libc actually supports a monotonic clock. */
+# ifdef _SC_MONOTONIC_CLOCK
+    if (has_monoclock == -1)
+	has_monoclock = sysconf(_SC_MONOTONIC_CLOCK) != -1;
+# endif
+    if (!has_monoclock)
+	debug_return_int(sudo_gettime_real(ts));
+    if (clock_gettime(SUDO_CLOCK_BOOTTIME, ts) == -1) {
+	sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "clock_gettime(%d) failed, using wall clock",
+	    (int)SUDO_CLOCK_BOOTTIME);
+	has_monoclock = 0;
+	debug_return_int(sudo_gettime_real(ts));
+    }
+    debug_return_int(0);
+}
+#elif defined(HAVE_GETHRTIME)
+int
+sudo_gettime_mono_v1(struct timespec *ts)
+{
+    hrtime_t nsec;
+    debug_decl(sudo_gettime_mono, SUDO_DEBUG_UTIL);
+
+    nsec = gethrtime();
+    ts->tv_sec = nsec / 1000000000;
+    ts->tv_nsec = nsec % 1000000000;
+    debug_return_int(0);
+}
+#elif defined(__MACH__)
+int
+sudo_gettime_mono_v1(struct timespec *ts)
+{
+    uint64_t abstime, nsec;
+    static mach_timebase_info_data_t timebase_info;
+    debug_decl(sudo_gettime_mono, SUDO_DEBUG_UTIL);
+
+    if (timebase_info.denom == 0)
+	(void) mach_timebase_info(&timebase_info);
+#ifdef HAVE_MACH_CONTINUOUS_TIME
+    abstime = mach_continuous_time();		/* runs while asleep */
+#else
+    abstime = mach_absolute_time();		/* doesn't run while asleep */
+#endif
+    nsec = abstime * timebase_info.numer / timebase_info.denom;
+    ts->tv_sec = nsec / 1000000000;
+    ts->tv_nsec = nsec % 1000000000;
+    debug_return_int(0);
+}
+#else
+int
+sudo_gettime_mono_v1(struct timespec *ts)
+{
+    /* No monotonic clock available, use wall clock. */
+    return sudo_gettime_real(ts);
+}
+#endif
+
+/*
+ * Monotonic time, only runs forward.
+ * We use a timer that only increments while awake, if possible.
+ */
+#if defined(HAVE_CLOCK_GETTIME) && defined(SUDO_CLOCK_UPTIME)
+int
+sudo_gettime_awake_v1(struct timespec *ts)
+{
+    static int has_monoclock = -1;
+    debug_decl(sudo_gettime_awake, SUDO_DEBUG_UTIL);
+
+    /* Check whether the kernel/libc actually supports a monotonic clock. */
+# ifdef _SC_MONOTONIC_CLOCK
+    if (has_monoclock == -1)
+	has_monoclock = sysconf(_SC_MONOTONIC_CLOCK) != -1;
+# endif
+    if (!has_monoclock)
+	debug_return_int(sudo_gettime_real(ts));
+    if (clock_gettime(SUDO_CLOCK_UPTIME, ts) == -1) {
+	sudo_debug_printf(SUDO_DEBUG_WARN|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "clock_gettime(%d) failed, using wall clock",
+	    (int)SUDO_CLOCK_UPTIME);
+	has_monoclock = 0;
+	debug_return_int(sudo_gettime_real(ts));
+    }
+    debug_return_int(0);
+}
+#elif defined(HAVE_GETHRTIME)
+int
+sudo_gettime_awake_v1(struct timespec *ts)
+{
+    hrtime_t nsec;
+    debug_decl(sudo_gettime_awake, SUDO_DEBUG_UTIL);
+
+    /* Currently the same as sudo_gettime_mono() */
+    nsec = gethrtime();
+    ts->tv_sec = nsec / 1000000000;
+    ts->tv_nsec = nsec % 1000000000;
+    debug_return_int(0);
+}
+#elif defined(__MACH__)
+int
+sudo_gettime_awake_v1(struct timespec *ts)
+{
+    uint64_t abstime, nsec;
+    static mach_timebase_info_data_t timebase_info;
+    debug_decl(sudo_gettime_awake, SUDO_DEBUG_UTIL);
+
+    if (timebase_info.denom == 0)
+	(void) mach_timebase_info(&timebase_info);
+    abstime = mach_absolute_time();
+    nsec = abstime * timebase_info.numer / timebase_info.denom;
+    ts->tv_sec = nsec / 1000000000;
+    ts->tv_nsec = nsec % 1000000000;
+    debug_return_int(0);
+}
+#else
+int
+sudo_gettime_awake_v1(struct timespec *ts)
+{
+    /* No monotonic uptime clock available, use wall clock. */
+    return sudo_gettime_real(ts);
+}
+#endif
diff --git a/lib/util/getusershell.c b/lib/util/getusershell.c
new file mode 100644
index 0000000..7912816
--- /dev/null
+++ b/lib/util/getusershell.c
@@ -0,0 +1,132 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+
+static char **allowed_shells, **current_shell;
+static char *default_shells[] = {
+    "/bin/sh",
+    "/bin/ksh",
+    "/bin/ksh93",
+    "/bin/bash",
+    "/bin/dash",
+    "/bin/zsh",
+    "/bin/csh",
+    "/bin/tcsh",
+    NULL
+};
+
+static char **
+read_shells(void)
+{
+    size_t maxshells = 16, nshells = 0;
+    size_t linesize = 0;
+    char *line = NULL;
+    FILE *fp;
+    debug_decl(read_shells, SUDO_DEBUG_UTIL);
+
+    if ((fp = fopen("/etc/shells", "r")) == NULL)
+	goto bad;
+
+    free(allowed_shells);
+    allowed_shells = reallocarray(NULL, maxshells, sizeof(char *));
+    if (allowed_shells == NULL)
+	goto bad;
+
+    while (sudo_parseln(&line, &linesize, NULL, fp, PARSELN_CONT_IGN) != -1) {
+	if (nshells + 1 >= maxshells) {
+	    char **new_shells;
+
+	    new_shells = reallocarray(NULL, maxshells + 16, sizeof(char *));
+	    if (new_shells == NULL)
+		goto bad;
+	    allowed_shells = new_shells;
+	    maxshells += 16;
+	}
+	if ((allowed_shells[nshells] = strdup(line)) == NULL)
+	    goto bad;
+	nshells++;
+    }
+    allowed_shells[nshells] = NULL;
+
+    free(line);
+    fclose(fp);
+    debug_return_ptr(allowed_shells);
+bad:
+    free(line);
+    if (fp != NULL)
+	fclose(fp);
+    while (nshells != 0)
+	free(allowed_shells[--nshells]);
+    free(allowed_shells);
+    allowed_shells = NULL;
+    debug_return_ptr(default_shells);
+}
+
+void
+sudo_setusershell(void)
+{
+    debug_decl(setusershell, SUDO_DEBUG_UTIL);
+
+    current_shell = read_shells();
+
+    debug_return;
+}
+
+void
+sudo_endusershell(void)
+{
+    debug_decl(endusershell, SUDO_DEBUG_UTIL);
+
+    if (allowed_shells != NULL) {
+	char **shell;
+
+	for (shell = allowed_shells; *shell != NULL; shell++)
+	    free(*shell);
+	free(allowed_shells);
+	allowed_shells = NULL;
+    }
+    current_shell = NULL;
+
+    debug_return;
+}
+
+char *
+sudo_getusershell(void)
+{
+    debug_decl(getusershell, SUDO_DEBUG_UTIL);
+
+    if (current_shell == NULL)
+	current_shell = read_shells();
+
+    debug_return_str(*current_shell++);
+}
diff --git a/lib/util/gidlist.c b/lib/util/gidlist.c
new file mode 100644
index 0000000..d9107cd
--- /dev/null
+++ b/lib/util/gidlist.c
@@ -0,0 +1,87 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <grp.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+
+/*
+ * Parse a comma-separated list of gids into an allocated array of GETGROUPS_T.
+ * If a pointer to the base gid is specified, it is stored as the first element
+ * in the array.
+ * Returns the number of gids in the allocated array.
+ */
+int
+sudo_parse_gids_v1(const char *gidstr, const gid_t *basegid, GETGROUPS_T **gidsp)
+{
+    int ngids = 0;
+    GETGROUPS_T *gids;
+    const char *cp = gidstr;
+    const char *errstr;
+    char *ep;
+    debug_decl(sudo_parse_gids, SUDO_DEBUG_UTIL);
+
+    /* Count groups. */
+    if (*cp != '\0') {
+	ngids++;
+	do {
+	    if (*cp++ == ',')
+		ngids++;
+	} while (*cp != '\0');
+    }
+    /* Base gid is optional. */
+    if (basegid != NULL)
+	ngids++;
+    /* Allocate and fill in array. */
+    if (ngids != 0) {
+	gids = reallocarray(NULL, ngids, sizeof(GETGROUPS_T));
+	if (gids == NULL) {
+	    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	    debug_return_int(-1);
+	}
+	ngids = 0;
+	if (basegid != NULL)
+	    gids[ngids++] = *basegid;
+	cp = gidstr;
+	do {
+	    gids[ngids] = (GETGROUPS_T) sudo_strtoidx(cp, ",", &ep, &errstr);
+	    if (errstr != NULL) {
+		sudo_warnx(U_("%s: %s"), cp, U_(errstr));
+		free(gids);
+		debug_return_int(-1);
+	    }
+	    if (basegid == NULL || gids[ngids] != *basegid)
+		ngids++;
+	    cp = ep + 1;
+	} while (*ep != '\0');
+	*gidsp = gids;
+    }
+    debug_return_int(ngids);
+}
diff --git a/lib/util/glob.c b/lib/util/glob.c
new file mode 100644
index 0000000..762e107
--- /dev/null
+++ b/lib/util/glob.c
@@ -0,0 +1,953 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2008-2014 Todd C. Miller <Todd.Miller@sudo.ws>
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guido van Rossum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)glob.c	8.3 (Berkeley) 10/13/93
+ */
+
+/*
+ * glob(3) -- a superset of the one defined in POSIX 1003.2.
+ *
+ * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
+ *
+ * Optional extra services, controlled by flags not defined by POSIX:
+ *
+ * GLOB_MAGCHAR:
+ *	Set in gl_flags if pattern contained a globbing character.
+ * GLOB_TILDE:
+ *	expand ~user/foo to the /home/dir/of/user/foo
+ * GLOB_BRACE:
+ *	expand {1,2}{a,b} to 1a 1b 2a 2b
+ * gl_matchc:
+ *	Number of matches in the current invocation of glob.
+ */
+
+#include <config.h>
+
+#ifndef HAVE_GLOB
+
+#include <sys/stat.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <limits.h>
+#include <pwd.h>
+
+#include "sudo_compat.h"
+#include "compat/glob.h"
+#include "compat/charclass.h"
+
+#define	DOLLAR		'$'
+#define	DOT		'.'
+#define	EOS		'\0'
+#define	LBRACKET	'['
+#define	NOT		'!'
+#define	QUESTION	'?'
+#define	QUOTE		'\\'
+#define	RANGE		'-'
+#define	RBRACKET	']'
+#define	SEP		'/'
+#define	STAR		'*'
+#define	TILDE		'~'
+#define	UNDERSCORE	'_'
+#define	LBRACE		'{'
+#define	RBRACE		'}'
+#define	SLASH		'/'
+#define	COMMA		','
+
+#ifndef DEBUG
+
+#define	M_QUOTE		0x8000
+#define	M_PROTECT	0x4000
+#define	M_MASK		0xffff
+#define	M_ASCII		0x00ff
+
+typedef unsigned short Char;
+
+#else
+
+#define	M_QUOTE		0x80
+#define	M_PROTECT	0x40
+#define	M_MASK		0xff
+#define	M_ASCII		0x7f
+
+typedef char Char;
+
+#endif
+
+
+#define	CHAR(c)		((Char)((c)&M_ASCII))
+#define	META(c)		((Char)((c)|M_QUOTE))
+#define	M_ALL		META('*')
+#define	M_END		META(']')
+#define	M_NOT		META('!')
+#define	M_ONE		META('?')
+#define	M_RNG		META('-')
+#define	M_SET		META('[')
+#define	M_CLASS		META(':')
+#define	ismeta(c)	(((c)&M_QUOTE) != 0)
+
+#define	GLOB_LIMIT_MALLOC	65536
+#define	GLOB_LIMIT_STAT		2048
+#define	GLOB_LIMIT_READDIR	16384
+
+struct glob_lim {
+	size_t	glim_malloc;
+	size_t	glim_stat;
+	size_t	glim_readdir;
+};
+
+static int	 compare(const void *, const void *);
+static int	 g_Ctoc(const Char *, char *, size_t);
+static int	 g_lstat(Char *, struct stat *, glob_t *);
+static DIR	*g_opendir(Char *, glob_t *);
+static Char	*g_strchr(const Char *, int);
+static int	 g_strncmp(const Char *, const char *, size_t);
+static int	 g_stat(Char *, struct stat *, glob_t *);
+static int	 glob0(const Char *, glob_t *, struct glob_lim *);
+static int	 glob1(Char *, Char *, glob_t *, struct glob_lim *);
+static int	 glob2(Char *, Char *, Char *, Char *, Char *, Char *,
+		    glob_t *, struct glob_lim *);
+static int	 glob3(Char *, Char *, Char *, Char *, Char *,
+		    Char *, Char *, glob_t *, struct glob_lim *);
+static int	 globextend(const Char *, glob_t *, struct glob_lim *,
+		    struct stat *);
+static const Char *
+		 globtilde(const Char *, Char *, size_t, glob_t *);
+static int	 globexp1(const Char *, glob_t *, struct glob_lim *);
+static int	 globexp2(const Char *, const Char *, glob_t *,
+		    struct glob_lim *);
+static int	 match(Char *, Char *, Char *);
+#ifdef DEBUG
+static void	 qprintf(const char *, Char *);
+#endif
+
+int
+sudo_glob(const char *pattern, int flags, int (*errfunc)(const char *, int),
+    glob_t *pglob)
+{
+	const unsigned char *patnext;
+	int c;
+	Char *bufnext, *bufend, patbuf[PATH_MAX];
+	struct glob_lim limit = { 0, 0, 0 };
+
+	patnext = (unsigned char *) pattern;
+	if (!(flags & GLOB_APPEND)) {
+		pglob->gl_pathc = 0;
+		pglob->gl_pathv = NULL;
+		if (!(flags & GLOB_DOOFFS))
+			pglob->gl_offs = 0;
+	}
+	pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+	pglob->gl_errfunc = errfunc;
+	pglob->gl_matchc = 0;
+
+	if (pglob->gl_offs >= SSIZE_MAX || pglob->gl_pathc >= SSIZE_MAX ||
+	    pglob->gl_pathc >= SSIZE_MAX - pglob->gl_offs - 1)
+		return GLOB_NOSPACE;
+
+	if (strnlen(pattern, PATH_MAX) == PATH_MAX)
+		return GLOB_NOMATCH;
+
+	bufnext = patbuf;
+	bufend = bufnext + PATH_MAX - 1;
+	if (flags & GLOB_NOESCAPE)
+		while (bufnext < bufend && (c = *patnext++) != EOS)
+			*bufnext++ = c;
+	else {
+		/* Protect the quoted characters. */
+		while (bufnext < bufend && (c = *patnext++) != EOS)
+			if (c == QUOTE) {
+				if ((c = *patnext++) == EOS) {
+					c = QUOTE;
+					--patnext;
+				}
+				*bufnext++ = c | M_PROTECT;
+			} else
+				*bufnext++ = c;
+	}
+	*bufnext = EOS;
+
+	if (flags & GLOB_BRACE)
+		return globexp1(patbuf, pglob, &limit);
+	else
+		return glob0(patbuf, pglob, &limit);
+}
+
+/*
+ * Expand recursively a glob {} pattern. When there is no more expansion
+ * invoke the standard globbing routine to glob the rest of the magic
+ * characters
+ */
+static int
+globexp1(const Char *pattern, glob_t *pglob, struct glob_lim *limitp)
+{
+	const Char* ptr = pattern;
+
+	/* Protect a single {}, for find(1), like csh */
+	if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
+		return glob0(pattern, pglob, limitp);
+
+	if ((ptr = (const Char *) g_strchr(ptr, LBRACE)) != NULL)
+		return globexp2(ptr, pattern, pglob, limitp);
+
+	return glob0(pattern, pglob, limitp);
+}
+
+
+/*
+ * Recursive brace globbing helper. Tries to expand a single brace.
+ * If it succeeds then it invokes globexp1 with the new pattern.
+ * If it fails then it tries to glob the rest of the pattern and returns.
+ */
+static int
+globexp2(const Char *ptr, const Char *pattern, glob_t *pglob,
+    struct glob_lim *limitp)
+{
+	int     i, rv;
+	Char   *lm, *ls;
+	const Char *pe, *pm, *pl;
+	Char    patbuf[PATH_MAX];
+
+	/* copy part up to the brace */
+	for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+		continue;
+	*lm = EOS;
+	ls = lm;
+
+	/* Find the balanced brace */
+	for (i = 0, pe = ++ptr; *pe; pe++)
+		if (*pe == LBRACKET) {
+			/* Ignore everything between [] */
+			for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
+				continue;
+			if (*pe == EOS) {
+				/*
+				 * We could not find a matching RBRACKET.
+				 * Ignore and just look for RBRACE
+				 */
+				pe = pm;
+			}
+		} else if (*pe == LBRACE)
+			i++;
+		else if (*pe == RBRACE) {
+			if (i == 0)
+				break;
+			i--;
+		}
+
+	/* Non matching braces; just glob the pattern */
+	if (i != 0 || *pe == EOS)
+		return glob0(patbuf, pglob, limitp);
+
+	for (i = 0, pl = pm = ptr; pm <= pe; pm++) {
+		switch (*pm) {
+		case LBRACKET:
+			/* Ignore everything between [] */
+			for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+				continue;
+			if (*pm == EOS) {
+				/*
+				 * We could not find a matching RBRACKET.
+				 * Ignore and just look for RBRACE
+				 */
+				pm = pl;
+			}
+			break;
+
+		case LBRACE:
+			i++;
+			break;
+
+		case RBRACE:
+			if (i) {
+				i--;
+				break;
+			}
+			FALLTHROUGH;
+		case COMMA:
+			if (i && *pm == COMMA)
+				break;
+			else {
+				/* Append the current string */
+				for (lm = ls; (pl < pm); *lm++ = *pl++)
+					continue;
+
+				/*
+				 * Append the rest of the pattern after the
+				 * closing brace
+				 */
+				for (pl = pe + 1; (*lm++ = *pl++) != EOS; )
+					continue;
+
+				/* Expand the current pattern */
+#ifdef DEBUG
+				qprintf("globexp2:", patbuf);
+#endif
+				rv = globexp1(patbuf, pglob, limitp);
+				if (rv && rv != GLOB_NOMATCH)
+					return rv;
+
+				/* move after the comma, to the next string */
+				pl = pm + 1;
+			}
+			break;
+
+		default:
+			break;
+		}
+	}
+	return 0;
+}
+
+
+
+/*
+ * expand tilde from the passwd file.
+ */
+static const Char *
+globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob)
+{
+	struct passwd *pwd;
+	char *h;
+	const Char *p;
+	Char *b, *eb;
+
+	if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
+		return pattern;
+
+	/* Copy up to the end of the string or / */
+	eb = &patbuf[patbuf_len - 1];
+	for (p = pattern + 1, h = (char *) patbuf;
+	    h < (char *)eb && *p && *p != SLASH; *h++ = *p++)
+		continue;
+
+	*h = EOS;
+
+	if (((char *) patbuf)[0] == EOS) {
+		/*
+		 * handle a plain ~ or ~/ by expanding $HOME
+		 * first and then trying the password file
+		 */
+		if ((h = getenv("HOME")) == NULL) {
+			if ((pwd = getpwuid(getuid())) == NULL)
+				return pattern;
+			else
+				h = pwd->pw_dir;
+		}
+	} else {
+		/*
+		 * Expand a ~user
+		 */
+		if ((pwd = getpwnam((char*) patbuf)) == NULL)
+			return pattern;
+		else
+			h = pwd->pw_dir;
+	}
+
+	/* Copy the home directory */
+	for (b = patbuf; b < eb && *h; *b++ = *h++)
+		continue;
+
+	/* Append the rest of the pattern */
+	while (b < eb && (*b++ = *p++) != EOS)
+		continue;
+	*b = EOS;
+
+	return patbuf;
+}
+
+static int
+g_strncmp(const Char *s1, const char *s2, size_t n)
+{
+	int rv = 0;
+
+	while (n--) {
+		rv = *(Char *)s1 - *(const unsigned char *)s2++;
+		if (rv)
+			break;
+		if (*s1++ == '\0')
+			break;
+	}
+	return rv;
+}
+
+static int
+g_charclass(const Char **patternp, Char **bufnextp)
+{
+	const Char *pattern = *patternp + 1;
+	Char *bufnext = *bufnextp;
+	const Char *colon;
+	struct cclass *cc;
+	size_t len;
+
+	if ((colon = g_strchr(pattern, ':')) == NULL || colon[1] != ']')
+		return 1;	/* not a character class */
+
+	len = (size_t)(colon - pattern);
+	for (cc = cclasses; cc->name != NULL; cc++) {
+		if (!g_strncmp(pattern, cc->name, len) && cc->name[len] == '\0')
+			break;
+	}
+	if (cc->name == NULL)
+		return -1;	/* invalid character class */
+	*bufnext++ = M_CLASS;
+	*bufnext++ = (Char)(cc - &cclasses[0]);
+	*bufnextp = bufnext;
+	*patternp += len + 3;
+
+	return 0;
+}
+
+/*
+ * The main glob() routine: compiles the pattern (optionally processing
+ * quotes), calls glob1() to do the real pattern matching, and finally
+ * sorts the list (unless unsorted operation is requested).  Returns 0
+ * if things went well, nonzero if errors occurred.  It is not an error
+ * to find no matches.
+ */
+static int
+glob0(const Char *pattern, glob_t *pglob, struct glob_lim *limitp)
+{
+	const Char *qpatnext;
+	int c, err;
+	size_t oldpathc;
+	Char *bufnext, patbuf[PATH_MAX];
+
+	qpatnext = globtilde(pattern, patbuf, PATH_MAX, pglob);
+	oldpathc = pglob->gl_pathc;
+	bufnext = patbuf;
+
+	/* We don't need to check for buffer overflow any more. */
+	while ((c = *qpatnext++) != EOS) {
+		switch (c) {
+		case LBRACKET:
+			c = *qpatnext;
+			if (c == NOT)
+				++qpatnext;
+			if (*qpatnext == EOS ||
+			    g_strchr(qpatnext+1, RBRACKET) == NULL) {
+				*bufnext++ = LBRACKET;
+				if (c == NOT)
+					--qpatnext;
+				break;
+			}
+			*bufnext++ = M_SET;
+			if (c == NOT)
+				*bufnext++ = M_NOT;
+			c = *qpatnext++;
+			do {
+				if (c == LBRACKET && *qpatnext == ':') {
+					do {
+						err = g_charclass(&qpatnext,
+						    &bufnext);
+						if (err)
+							break;
+						c = *qpatnext++;
+					} while (c == LBRACKET && *qpatnext == ':');
+					if (err == -1 &&
+					    !(pglob->gl_flags & GLOB_NOCHECK))
+						return GLOB_NOMATCH;
+					if (c == RBRACKET)
+						break;
+				}
+				*bufnext++ = CHAR(c);
+				if (*qpatnext == RANGE &&
+				    (c = qpatnext[1]) != RBRACKET) {
+					*bufnext++ = M_RNG;
+					*bufnext++ = CHAR(c);
+					qpatnext += 2;
+				}
+			} while ((c = *qpatnext++) != RBRACKET);
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			*bufnext++ = M_END;
+			break;
+		case QUESTION:
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			*bufnext++ = M_ONE;
+			break;
+		case STAR:
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			/* collapse adjacent stars to one,
+			 * to avoid exponential behavior
+			 */
+			if (bufnext == patbuf || bufnext[-1] != M_ALL)
+				*bufnext++ = M_ALL;
+			break;
+		default:
+			*bufnext++ = CHAR(c);
+			break;
+		}
+	}
+	*bufnext = EOS;
+#ifdef DEBUG
+	qprintf("glob0:", patbuf);
+#endif
+
+	if ((err = glob1(patbuf, patbuf + PATH_MAX - 1, pglob, limitp)) != 0)
+		return err;
+
+	/*
+	 * If there was no match we are going to append the pattern
+	 * if GLOB_NOCHECK was specified.
+	 */
+	if (pglob->gl_pathc == oldpathc) {
+		if ((pglob->gl_flags & GLOB_NOCHECK))
+			return globextend(pattern, pglob, limitp, NULL);
+		else
+			return GLOB_NOMATCH;
+	}
+	if (!(pglob->gl_flags & GLOB_NOSORT)) {
+		qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
+		    pglob->gl_pathc - oldpathc, sizeof(char *), compare);
+	}
+	return 0;
+}
+
+static int
+compare(const void *p, const void *q)
+{
+	return strcmp(*(char **)p, *(char **)q);
+}
+
+static int
+glob1(Char *pattern, Char *pattern_last, glob_t *pglob, struct glob_lim *limitp)
+{
+	Char pathbuf[PATH_MAX];
+
+	/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
+	if (*pattern == EOS)
+		return 0;
+	return glob2(pathbuf, pathbuf + PATH_MAX - 1,
+	    pathbuf, pathbuf + PATH_MAX - 1,
+	    pattern, pattern_last, pglob, limitp);
+}
+
+/*
+ * The functions glob2 and glob3 are mutually recursive; there is one level
+ * of recursion for each segment in the pattern that contains one or more
+ * meta characters.
+ */
+static int
+glob2(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
+    Char *pattern, Char *pattern_last, glob_t *pglob, struct glob_lim *limitp)
+{
+	struct stat sb;
+	Char *p, *q;
+	int anymeta;
+
+	/*
+	 * Loop over pattern segments until end of pattern or until
+	 * segment with meta character found.
+	 */
+	for (anymeta = 0;;) {
+		if (*pattern == EOS) {		/* End of pattern? */
+			*pathend = EOS;
+
+			if ((pglob->gl_flags & GLOB_LIMIT) &&
+			    limitp->glim_stat++ >= GLOB_LIMIT_STAT) {
+				errno = 0;
+				*pathend++ = SEP;
+				*pathend = EOS;
+				return GLOB_NOSPACE;
+			}
+			if (g_lstat(pathbuf, &sb, pglob))
+				return 0;
+
+			if (((pglob->gl_flags & GLOB_MARK) &&
+			    pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) ||
+			    (S_ISLNK(sb.st_mode) &&
+			    (g_stat(pathbuf, &sb, pglob) == 0) &&
+			    S_ISDIR(sb.st_mode)))) {
+				if (pathend+1 > pathend_last)
+					return 1;
+				*pathend++ = SEP;
+				*pathend = EOS;
+			}
+			++pglob->gl_matchc;
+			return globextend(pathbuf, pglob, limitp, &sb);
+		}
+
+		/* Find end of next segment, copy tentatively to pathend. */
+		q = pathend;
+		p = pattern;
+		while (*p != EOS && *p != SEP) {
+			if (ismeta(*p))
+				anymeta = 1;
+			if (q+1 > pathend_last)
+				return 1;
+			*q++ = *p++;
+		}
+
+		if (!anymeta) {		/* No expansion, do next segment. */
+			pathend = q;
+			pattern = p;
+			while (*pattern == SEP) {
+				if (pathend+1 > pathend_last)
+					return 1;
+				*pathend++ = *pattern++;
+			}
+		} else
+			/* Need expansion, recurse. */
+			return glob3(pathbuf, pathbuf_last, pathend,
+			    pathend_last, pattern, p, pattern_last,
+			    pglob, limitp);
+	}
+	/* NOTREACHED */
+}
+
+static int
+glob3(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last,
+    Char *pattern, Char *restpattern, Char *restpattern_last, glob_t *pglob,
+    struct glob_lim *limitp)
+{
+	struct dirent *dp;
+	DIR *dirp;
+	int err;
+	char buf[PATH_MAX];
+
+	if (pathend > pathend_last)
+		return 1;
+	*pathend = EOS;
+	errno = 0;
+
+	if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
+		/* TODO: don't call for ENOENT or ENOTDIR? */
+		if (pglob->gl_errfunc) {
+			if (g_Ctoc(pathbuf, buf, sizeof(buf)))
+				return GLOB_ABORTED;
+			if (pglob->gl_errfunc(buf, errno) ||
+			    pglob->gl_flags & GLOB_ERR)
+				return GLOB_ABORTED;
+		}
+		return 0;
+	}
+
+	err = 0;
+
+	/* Search directory for matching names. */
+	while ((dp = readdir(dirp))) {
+		unsigned char *sc;
+		Char *dc;
+
+		if ((pglob->gl_flags & GLOB_LIMIT) &&
+		    limitp->glim_readdir++ >= GLOB_LIMIT_READDIR) {
+			errno = 0;
+			*pathend++ = SEP;
+			*pathend = EOS;
+			err = GLOB_NOSPACE;
+			break;
+		}
+
+		/* Initial DOT must be matched literally. */
+		if (dp->d_name[0] == DOT && *pattern != DOT)
+			continue;
+		dc = pathend;
+		sc = (unsigned char *) dp->d_name;
+		while (dc < pathend_last && (*dc++ = *sc++) != EOS)
+			continue;
+		if (dc >= pathend_last) {
+			*dc = EOS;
+			err = 1;
+			break;
+		}
+
+		if (!match(pathend, pattern, restpattern)) {
+			*pathend = EOS;
+			continue;
+		}
+		err = glob2(pathbuf, pathbuf_last, --dc, pathend_last,
+		    restpattern, restpattern_last, pglob, limitp);
+		if (err)
+			break;
+	}
+
+	closedir(dirp);
+	return err;
+}
+
+/*
+ * Extend the gl_pathv member of a glob_t structure to accommodate a new item,
+ * add the new item, and update gl_pathc.
+ *
+ * This assumes the BSD realloc, which only copies the block when its size
+ * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
+ * behavior.
+ *
+ * Return 0 if new item added, error code if memory couldn't be allocated.
+ *
+ * Invariant of the glob_t structure:
+ *	Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
+ *	gl_pathv points to (gl_offs + gl_pathc + 1) items.
+ */
+static int
+globextend(const Char *path, glob_t *pglob, struct glob_lim *limitp,
+    struct stat *sb)
+{
+	char **pathv;
+	size_t i, newn, len;
+	char *copy = NULL;
+	const Char *p;
+
+	newn = 2 + pglob->gl_pathc + pglob->gl_offs;
+	if (pglob->gl_offs >= SSIZE_MAX ||
+	    pglob->gl_pathc >= SSIZE_MAX ||
+	    newn >= SSIZE_MAX ||
+	    SIZE_MAX / sizeof(*pathv) <= newn) {
+ nospace:
+		for (i = pglob->gl_offs; i < newn - 2; i++) {
+			if (pglob->gl_pathv && pglob->gl_pathv[i])
+				free(pglob->gl_pathv[i]);
+		}
+		if (pglob->gl_pathv) {
+			free(pglob->gl_pathv);
+			pglob->gl_pathv = NULL;
+		}
+		return GLOB_NOSPACE;
+	}
+
+	pathv = reallocarray(pglob->gl_pathv, newn, sizeof(*pathv));
+	if (pathv == NULL)
+		goto nospace;
+	if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
+		/* first time around -- clear initial gl_offs items */
+		pathv += pglob->gl_offs;
+		for (i = pglob->gl_offs; i > 0; i--)
+			*--pathv = NULL;
+	}
+	pglob->gl_pathv = pathv;
+
+	for (p = path; *p++;)
+		continue;
+	len = (size_t)(p - path);
+	limitp->glim_malloc += len;
+	if ((copy = malloc(len)) != NULL) {
+		if (g_Ctoc(path, copy, len)) {
+			free(copy);
+			return GLOB_NOSPACE;
+		}
+		pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
+	}
+	pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
+
+	if ((pglob->gl_flags & GLOB_LIMIT) &&
+	    (newn * sizeof(*pathv)) + limitp->glim_malloc >
+	    GLOB_LIMIT_MALLOC) {
+		errno = 0;
+		return GLOB_NOSPACE;
+	}
+	return copy == NULL ? GLOB_NOSPACE : 0;
+}
+
+
+/*
+ * pattern matching function for filenames.  Each occurrence of the *
+ * pattern causes an iteration.
+ *
+ * Note, this function differs from the original as per the discussion
+ * here: https://research.swtch.com/glob
+ *
+ * Basically we removed the recursion and made it use the algorithm
+ * from Russ Cox to not go quadratic on cases like a file called
+ * ("a" x 100) . "x" matched against a pattern like "a*a*a*a*a*a*a*y".
+ */
+static int
+match(Char *name, Char *pat, Char *patend)
+{
+	int ok, negate_range;
+	Char c, k;
+	Char *nextp = NULL;
+	Char *nextn = NULL;
+
+loop:
+	while (pat < patend) {
+		c = *pat++;
+		switch (c & M_MASK) {
+		case M_ALL:
+			while (pat < patend && (*pat & M_MASK) == M_ALL)
+				pat++;	/* eat consecutive '*' */
+			if (pat == patend)
+				return 1;
+			if (*name == EOS)
+				return 0;
+			nextn = name + 1;
+			nextp = pat - 1;
+			break;
+		case M_ONE:
+			if (*name++ == EOS)
+				goto fail;
+			break;
+		case M_SET:
+			ok = 0;
+			if ((k = *name++) == EOS)
+				goto fail;
+			if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
+				++pat;
+			while (((c = *pat++) & M_MASK) != M_END) {
+				if ((c & M_MASK) == M_CLASS) {
+					Char idx = *pat & M_MASK;
+					if (idx < NCCLASSES &&
+					    cclasses[idx].isctype(k))
+						ok = 1;
+					++pat;
+				}
+				if ((*pat & M_MASK) == M_RNG) {
+					if (c <= k && k <= pat[1])
+						ok = 1;
+					pat += 2;
+				} else if (c == k)
+					ok = 1;
+			}
+			if (ok == negate_range)
+				goto fail;
+			break;
+		default:
+			if (*name++ != c)
+				goto fail;
+			break;
+		}
+	}
+	if (*name == EOS)
+		return 1;
+fail:
+	if (nextn) {
+		pat = nextp;
+		name = nextn;
+		goto loop;
+	}
+	return 0;
+}
+
+/* Free allocated data belonging to a glob_t structure. */
+void
+sudo_globfree(glob_t *pglob)
+{
+	size_t i;
+	char **pp;
+
+	if (pglob->gl_pathv != NULL) {
+		pp = pglob->gl_pathv + pglob->gl_offs;
+		for (i = pglob->gl_pathc; i--; ++pp)
+			if (*pp)
+				free(*pp);
+		free(pglob->gl_pathv);
+		pglob->gl_pathv = NULL;
+	}
+}
+
+static DIR *
+g_opendir(Char *str, glob_t *pglob)
+{
+	char buf[PATH_MAX];
+
+	if (!*str) {
+		buf[0] = '.';
+		buf[1] = '\0';
+	} else {
+		if (g_Ctoc(str, buf, sizeof(buf)))
+			return NULL;
+	}
+
+	return opendir(buf);
+}
+
+static int
+g_lstat(Char *fn, struct stat *sb, glob_t *pglob)
+{
+	char buf[PATH_MAX];
+
+	if (g_Ctoc(fn, buf, sizeof(buf)))
+		return -1;
+	return lstat(buf, sb);
+}
+
+static int
+g_stat(Char *fn, struct stat *sb, glob_t *pglob)
+{
+	char buf[PATH_MAX];
+
+	if (g_Ctoc(fn, buf, sizeof(buf)))
+		return -1;
+	return stat(buf, sb);
+}
+
+static Char *
+g_strchr(const Char *str, int ch)
+{
+	do {
+		if (*str == ch)
+			return (Char *)str;
+	} while (*str++);
+	return NULL;
+}
+
+static int
+g_Ctoc(const Char *str, char *buf, size_t len)
+{
+
+	while (len--) {
+		if ((*buf++ = *str++) == EOS)
+			return 0;
+	}
+	return 1;
+}
+
+#ifdef DEBUG
+static void
+qprintf(const char *str, Char *s)
+{
+	Char *p;
+
+	(void)printf("%s:\n", str);
+	for (p = s; *p; p++)
+		(void)printf("%c", CHAR(*p));
+	(void)printf("\n");
+	for (p = s; *p; p++)
+		(void)printf("%c", *p & M_PROTECT ? '"' : ' ');
+	(void)printf("\n");
+	for (p = s; *p; p++)
+		(void)printf("%c", ismeta(*p) ? '_' : ' ');
+	(void)printf("\n");
+}
+#endif /* DEBUG */
+#endif /* HAVE_GLOB */
diff --git a/lib/util/gmtime_r.c b/lib/util/gmtime_r.c
new file mode 100644
index 0000000..b9feb1f
--- /dev/null
+++ b/lib/util/gmtime_r.c
@@ -0,0 +1,49 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_GMTIME_R
+
+#include <sys/types.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+/*
+ * Fake gmtime_r() that just stores the result.
+ * Still has the normal gmtime() side effects.
+ */
+struct tm *
+sudo_gmtime_r(const time_t *timer, struct tm *result)
+{
+    struct tm *tm;
+
+    if ((tm = gmtime(timer)) == NULL)
+	return NULL;
+    memcpy(result, tm, sizeof(struct tm));
+
+    return result;
+}
+#endif /* HAVE_GMTIME_T */
diff --git a/lib/util/hexchar.c b/lib/util/hexchar.c
new file mode 100644
index 0000000..81cd619
--- /dev/null
+++ b/lib/util/hexchar.c
@@ -0,0 +1,103 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015, 2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * Converts a two-byte hex string to decimal.
+ * Returns a value 0-255 on success or -1 for invalid input.
+ */
+int
+sudo_hexchar_v1(const char *s)
+{
+    unsigned char result[2];
+    int i;
+    debug_decl(sudo_hexchar, SUDO_DEBUG_UTIL);
+
+    for (i = 0; i < 2; i++) {
+	switch (s[i]) {
+	case '0':
+	    result[i] = 0;
+	    break;
+	case '1':
+	    result[i] = 1;
+	    break;
+	case '2':
+	    result[i] = 2;
+	    break;
+	case '3':
+	    result[i] = 3;
+	    break;
+	case '4':
+	    result[i] = 4;
+	    break;
+	case '5':
+	    result[i] = 5;
+	    break;
+	case '6':
+	    result[i] = 6;
+	    break;
+	case '7':
+	    result[i] = 7;
+	    break;
+	case '8':
+	    result[i] = 8;
+	    break;
+	case '9':
+	    result[i] = 9;
+	    break;
+	case 'A':
+	case 'a':
+	    result[i] = 10;
+	    break;
+	case 'B':
+	case 'b':
+	    result[i] = 11;
+	    break;
+	case 'C':
+	case 'c':
+	    result[i] = 12;
+	    break;
+	case 'D':
+	case 'd':
+	    result[i] = 13;
+	    break;
+	case 'E':
+	case 'e':
+	    result[i] = 14;
+	    break;
+	case 'F':
+	case 'f':
+	    result[i] = 15;
+	    break;
+	default:
+	    /* Invalid input. */
+	    debug_return_int(-1);
+	}
+    }
+    debug_return_int((result[0] << 4) | result[1]);
+}
diff --git a/lib/util/inet_ntop.c b/lib/util/inet_ntop.c
new file mode 100644
index 0000000..d72d975
--- /dev/null
+++ b/lib/util/inet_ntop.c
@@ -0,0 +1,229 @@
+/*	$OpenBSD: inet_ntop.c,v 1.9 2014/02/05 14:20:43 millert Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <config.h>
+
+#if !defined(HAVE_INET_NTOP)
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+#include "sudo_compat.h"
+
+#ifndef EAFNOSUPPORT
+# define EAFNOSUPPORT EINVAL
+#endif
+
+#ifndef NS_IN6ADDRSZ
+# ifdef IN6ADDRSZ
+#  define NS_IN6ADDRSZ IN6ADDRSZ
+# else
+#  define NS_IN6ADDRSZ 16
+# endif
+#endif
+#ifndef NS_INT16SZ
+# ifdef INT16SZ
+#  define NS_INT16SZ INT16SZ
+# else
+#  define NS_INT16SZ 2
+# endif
+#endif
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4.  sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+/* const char *
+ * inet_ntop4(src, dst, size)
+ *	format an IPv4 address, more or less like inet_ntoa()
+ * return:
+ *	`dst' (as a const)
+ * notes:
+ *	(1) uses no statics
+ *	(2) takes a unsigned char* not an in_addr as input
+ * author:
+ *	Paul Vixie, 1996.
+ */
+static const char *
+inet_ntop4(const unsigned char *src, char *dst, socklen_t size)
+{
+	const char fmt[] = "%u.%u.%u.%u";
+	int len;
+
+	len = snprintf(dst, size, fmt, src[0], src[1], src[2], src[3]);
+	if (len < 0 || (size_t)len >= size) {
+		errno = ENOSPC;
+		return (NULL);
+	}
+	return (dst);
+}
+
+#ifdef HAVE_STRUCT_IN6_ADDR
+/* const char *
+ * inet_ntop6(src, dst, size)
+ *	convert IPv6 binary address into presentation (printable) format
+ * author:
+ *	Paul Vixie, 1996.
+ */
+static const char *
+inet_ntop6(const unsigned char *src, char *dst, socklen_t size)
+{
+	/*
+	 * Note that int32_t and int16_t need only be "at least" large enough
+	 * to contain a value of the specified size.  On some systems, like
+	 * Crays, there is no such thing as an integer variable with 16 bits.
+	 * Keep this in mind if you think this function should have been coded
+	 * to use pointer overlays.  All the world's not a VAX.
+	 */
+	char *cp, *ep;
+	struct { int base, len; } best, cur;
+	unsigned int words[NS_IN6ADDRSZ / NS_INT16SZ];
+	int i;
+	int advance;
+
+	/*
+	 * Preprocess:
+	 *	Copy the input (bytewise) array into a wordwise array.
+	 *	Find the longest run of 0x00's in src[] for :: shorthanding.
+	 */
+	memset(words, 0, sizeof(words));
+	for (i = 0; i < NS_IN6ADDRSZ; i++)
+		words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
+	best.base = -1;
+	best.len = 0;
+	cur.base = -1;
+	cur.len = 0;
+	for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) {
+		if (words[i] == 0) {
+			if (cur.base == -1)
+				cur.base = i, cur.len = 1;
+			else
+				cur.len++;
+		} else {
+			if (cur.base != -1) {
+				if (best.base == -1 || cur.len > best.len)
+					best = cur;
+				cur.base = -1;
+			}
+		}
+	}
+	if (cur.base != -1) {
+		if (best.base == -1 || cur.len > best.len)
+			best = cur;
+	}
+	if (best.base != -1 && best.len < 2)
+		best.base = -1;
+
+	/*
+	 * Format the result.
+	 */
+	cp = dst;
+	ep = dst + size;
+	for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ) && cp < ep; i++) {
+		/* Are we inside the best run of 0x00's? */
+		if (best.base != -1 && i >= best.base &&
+		    i < (best.base + best.len)) {
+			if (i == best.base) {
+				if (cp + 1 >= ep) {
+					errno = ENOSPC;
+					return (NULL);
+				}
+				*cp++ = ':';
+			}
+			continue;
+		}
+		/* Are we following an initial run of 0x00s or any real hex? */
+		if (i != 0) {
+			if (cp + 1 >= ep) {
+				errno = ENOSPC;
+				return (NULL);
+			}
+			*cp++ = ':';
+		}
+		/* Is this address an encapsulated IPv4? */
+		if (i == 6 && best.base == 0 &&
+		    (best.len == 6 ||
+		    (best.len == 7 && words[7] != 0x0001) ||
+		    (best.len == 5 && words[5] == 0xffff))) {
+			if (!inet_ntop4(src + 12, cp, (socklen_t)(ep - cp)))
+				return (NULL);
+			cp += strlen(cp);
+			break;
+		}
+		advance = snprintf(cp, (size_t)(ep - cp), "%x", words[i]);
+		if (advance <= 0 || advance >= ep - cp) {
+			errno = ENOSPC;
+			return (NULL);
+		}
+		cp += advance;
+	}
+	/* Was it a trailing run of 0x00's? */
+	if (best.base != -1 &&
+	    (best.base + best.len) == (NS_IN6ADDRSZ / NS_INT16SZ)) {
+		if (cp + 1 >= ep) {
+			errno = ENOSPC;
+			return (NULL);
+		}
+		*cp++ = ':';
+	}
+	if (cp + 1 >= ep) {
+		errno = ENOSPC;
+		return (NULL);
+	}
+	*cp++ = '\0';
+
+	return (dst);
+}
+#endif /* HAVE_STRUCT_IN6_ADDR */
+
+/* const char *
+ * inet_ntop(af, src, dst, size)
+ *	convert a network format address to presentation format.
+ * return:
+ *	pointer to presentation format address (`dst'), or NULL (see errno).
+ * author:
+ *	Paul Vixie, 1996.
+ */
+const char *
+sudo_inet_ntop(int af, const void *src, char *dst, socklen_t size)
+{
+	switch (af) {
+	case AF_INET:
+		return (inet_ntop4(src, dst, size));
+#ifdef HAVE_STRUCT_IN6_ADDR
+	case AF_INET6:
+		return (inet_ntop6(src, dst, size));
+#endif
+	default:
+		errno = EAFNOSUPPORT;
+		return (NULL);
+	}
+	/* NOTREACHED */
+}
+
+#endif /* !HAVE_INET_NTOP */
diff --git a/lib/util/inet_pton.c b/lib/util/inet_pton.c
new file mode 100644
index 0000000..c73c9c3
--- /dev/null
+++ b/lib/util/inet_pton.c
@@ -0,0 +1,252 @@
+/*	$OpenBSD: inet_pton.c,v 1.8 2010/05/06 15:47:14 claudio Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <config.h>
+
+#if !defined(HAVE_INET_PTON)
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <string.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+
+#ifndef EAFNOSUPPORT
+# define EAFNOSUPPORT EINVAL
+#endif
+
+#ifndef NS_INADDRSZ
+# ifdef INADDRSZ
+#  define NS_INADDRSZ INADDRSZ
+# else
+#  define NS_INADDRSZ 4
+# endif
+#endif
+#ifndef NS_IN6ADDRSZ
+# ifdef IN6ADDRSZ
+#  define NS_IN6ADDRSZ IN6ADDRSZ
+# else
+#  define NS_IN6ADDRSZ 16
+# endif
+#endif
+#ifndef NS_INT16SZ
+# ifdef INT16SZ
+#  define NS_INT16SZ INT16SZ
+# else
+#  define NS_INT16SZ 2
+# endif
+#endif
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4.  sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+/* int
+ * inet_pton4(src, dst)
+ *	like inet_aton() but without all the hexadecimal and shorthand.
+ * return:
+ *	1 if `src' is a valid dotted quad, else 0.
+ * notice:
+ *	does not touch `dst' unless it's returning 1.
+ * author:
+ *	Paul Vixie, 1996.
+ */
+static int
+inet_pton4(const char *src, u_char *dst)
+{
+	const char digits[] = "0123456789";
+	int saw_digit, octets, ch;
+	u_char tmp[NS_INADDRSZ], *tp;
+
+	saw_digit = 0;
+	octets = 0;
+	/* cppcheck-suppress uninitvar */
+	*(tp = tmp) = '\0';
+	while ((ch = (unsigned char)*src++) != '\0') {
+		const char *pch;
+
+		if ((pch = strchr(digits, ch)) != NULL) {
+			u_int new = *tp * 10 + (pch - digits);
+
+			if (new > 255)
+				return (0);
+			if (!saw_digit) {
+				if (++octets > 4)
+					return (0);
+				saw_digit = 1;
+			}
+			*tp = new;
+		} else if (ch == '.' && saw_digit) {
+			if (octets == 4)
+				return (0);
+			*++tp = 0;
+			saw_digit = 0;
+		} else
+			return (0);
+	}
+	if (octets < 4)
+		return (0);
+
+	memcpy(dst, tmp, NS_INADDRSZ);
+	return (1);
+}
+
+#ifdef HAVE_STRUCT_IN6_ADDR
+/* int
+ * inet_pton6(src, dst)
+ *	convert presentation level address to network order binary form.
+ * return:
+ *	1 if `src' is a valid [RFC1884 2.2] address, else 0.
+ * notice:
+ *	does not touch `dst' unless it's returning 1.
+ * credit:
+ *	inspired by Mark Andrews.
+ * author:
+ *	Paul Vixie, 1996.
+ */
+static int
+inet_pton6(const char *src, u_char *dst)
+{
+	const char xdigits_l[] = "0123456789abcdef",
+		   xdigits_u[] = "0123456789ABCDEF";
+	u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
+	const char *xdigits, *curtok;
+	int ch, saw_xdigit, count_xdigit;
+	u_int val;
+
+	/* cppcheck-suppress uninitvar */
+	memset((tp = tmp), 0, NS_IN6ADDRSZ);
+	endp = tp + NS_IN6ADDRSZ;
+	colonp = NULL;
+	/* Leading :: requires some special handling. */
+	if (*src == ':')
+		if (*++src != ':')
+			return (0);
+	curtok = src;
+	saw_xdigit = count_xdigit = 0;
+	val = 0;
+	while ((ch = (unsigned char)*src++) != '\0') {
+		const char *pch;
+
+		if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
+			pch = strchr((xdigits = xdigits_u), ch);
+		if (pch != NULL) {
+			if (count_xdigit >= 4)
+				return (0);
+			val <<= 4;
+			val |= (pch - xdigits);
+			if (val > 0xffff)
+				return (0);
+			saw_xdigit = 1;
+			count_xdigit++;
+			continue;
+		}
+		if (ch == ':') {
+			curtok = src;
+			if (!saw_xdigit) {
+				if (colonp)
+					return (0);
+				colonp = tp;
+				continue;
+			} else if (*src == '\0') {
+				return (0);
+			}
+			if (tp + NS_INT16SZ > endp)
+				return (0);
+			*tp++ = (u_char) (val >> 8) & 0xff;
+			*tp++ = (u_char) val & 0xff;
+			saw_xdigit = 0;
+			count_xdigit = 0;
+			val = 0;
+			continue;
+		}
+		if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
+		    inet_pton4(curtok, tp) > 0) {
+			tp += NS_INADDRSZ;
+			saw_xdigit = 0;
+			count_xdigit = 0;
+			break;	/* '\0' was seen by inet_pton4(). */
+		}
+		return (0);
+	}
+	if (saw_xdigit) {
+		if (tp + NS_INT16SZ > endp)
+			return (0);
+		*tp++ = (u_char) (val >> 8) & 0xff;
+		*tp++ = (u_char) val & 0xff;
+	}
+	if (colonp != NULL) {
+		/*
+		 * Since some memmove()'s erroneously fail to handle
+		 * overlapping regions, we'll do the shift by hand.
+		 */
+		const long n = tp - colonp;
+		long i;
+
+		if (tp == endp)
+			return (0);
+		for (i = 1; i <= n; i++) {
+			endp[- i] = colonp[n - i];
+			colonp[n - i] = 0;
+		}
+		tp = endp;
+	}
+	if (tp != endp)
+		return (0);
+	memcpy(dst, tmp, NS_IN6ADDRSZ);
+	return (1);
+}
+#endif /* HAVE_STRUCT_IN6_ADDR */
+
+/* int
+ * inet_pton(af, src, dst)
+ *	convert from presentation format (which usually means ASCII printable)
+ *	to network format (which is usually some kind of binary format).
+ * return:
+ *	1 if the address was valid for the specified address family
+ *	0 if the address wasn't valid (`dst' is untouched in this case)
+ *	-1 if some other error occurred (`dst' is untouched in this case, too)
+ * author:
+ *	Paul Vixie, 1996.
+ */
+int
+sudo_inet_pton(int af, const char *src, void *dst)
+{
+	switch (af) {
+	case AF_INET:
+		return (inet_pton4(src, dst));
+#ifdef HAVE_STRUCT_IN6_ADDR
+	case AF_INET6:
+		return (inet_pton6(src, dst));
+#endif /* HAVE_STRUCT_IN6_ADDR */
+	default:
+		errno = EAFNOSUPPORT;
+		return (-1);
+	}
+	/* NOTREACHED */
+}
+
+#endif /* HAVE_INET_PTON */
diff --git a/lib/util/isblank.c b/lib/util/isblank.c
new file mode 100644
index 0000000..753e030
--- /dev/null
+++ b/lib/util/isblank.c
@@ -0,0 +1,37 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2008, 2010-2011, 2013
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_ISBLANK
+
+#include "sudo_compat.h"
+
+#undef isblank
+int
+isblank(int ch)
+{
+    return ch == ' ' || ch == '\t';
+}
+#endif /* HAVE_ISBLANK */
diff --git a/lib/util/json.c b/lib/util/json.c
new file mode 100644
index 0000000..359498b
--- /dev/null
+++ b/lib/util/json.c
@@ -0,0 +1,423 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_json.h"
+#include "sudo_util.h"
+
+/*
+ * Double the size of the json buffer.
+ * Returns true on success, false if out of memory.
+ */
+static bool
+json_expand_buf(struct json_container *jsonc)
+{
+    char *newbuf;
+    debug_decl(json_expand_buf, SUDO_DEBUG_UTIL);
+
+    if ((newbuf = reallocarray(jsonc->buf, 2, jsonc->bufsize)) == NULL) {
+	if (jsonc->memfatal) {
+	    sudo_fatalx(U_("%s: %s"),
+		__func__, U_("unable to allocate memory"));
+	}
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "%s: %s", __func__, "unable to allocate memory");
+	debug_return_bool(false);
+    }
+    jsonc->buf = newbuf;
+    jsonc->bufsize *= 2;
+
+    debug_return_bool(true);
+}
+
+/*
+ * Start a new line and indent unless formatting as minimal JSON.
+ * Append "indent" number of blank characters.
+ */
+static bool
+json_new_line(struct json_container *jsonc)
+{
+    int indent = jsonc->indent_level;
+    debug_decl(json_new_line, SUDO_DEBUG_UTIL);
+
+    /* No non-essential white space in minimal mode. */
+    if (jsonc->minimal)
+	debug_return_bool(true);
+
+    while (jsonc->buflen + 1 + indent >= jsonc->bufsize) {
+	if (!json_expand_buf(jsonc))
+	    debug_return_bool(false);
+    }
+    jsonc->buf[jsonc->buflen++] = '\n';
+    while (indent--) {
+	jsonc->buf[jsonc->buflen++] = ' ';
+    }
+    jsonc->buf[jsonc->buflen] = '\0';
+
+    debug_return_bool(true);
+}
+
+/*
+ * Append a string to the JSON buffer, expanding as needed.
+ * Does not perform any quoting.
+ */
+static bool
+json_append_buf(struct json_container *jsonc, const char *str)
+{
+    size_t len;
+    debug_decl(json_append_buf, SUDO_DEBUG_UTIL);
+
+    len = strlen(str);
+    while (jsonc->buflen + len >= jsonc->bufsize) {
+	if (!json_expand_buf(jsonc))
+	    debug_return_bool(false);
+    }
+
+    memcpy(jsonc->buf + jsonc->buflen, str, len);
+    jsonc->buflen += len;
+    jsonc->buf[jsonc->buflen] = '\0';
+
+    debug_return_bool(true);
+}
+
+/*
+ * Append a quoted JSON string, escaping special chars and expanding as needed.
+ * Treats strings as 8-bit ASCII, escaping control characters.
+ */
+static bool
+json_append_string(struct json_container *jsonc, const char *str)
+{
+    const char hex[] = "0123456789abcdef";
+    unsigned char ch;
+    debug_decl(json_append_string, SUDO_DEBUG_UTIL);
+
+    if (!json_append_buf(jsonc, "\""))
+	    debug_return_bool(false);
+    while ((ch = *str++) != '\0') {
+	char buf[sizeof("\\u0000")], *cp = buf;
+
+	switch (ch) {
+	case '"':
+	case '\\':
+	    *cp++ = '\\';
+	    break;
+	case '\b':
+	    *cp++ = '\\';
+	    ch = 'b';
+	    break;
+	case '\f':
+	    *cp++ = '\\';
+	    ch = 'f';
+	    break;
+	case '\n':
+	    *cp++ = '\\';
+	    ch = 'n';
+	    break;
+	case '\r':
+	    *cp++ = '\\';
+	    ch = 'r';
+	    break;
+	case '\t':
+	    *cp++ = '\\';
+	    ch = 't';
+	    break;
+	default:
+	    if (iscntrl(ch)) {
+		/* Escape control characters like \u0000 */
+		*cp++ = '\\';
+		*cp++ = 'u';
+		*cp++ = '0';
+		*cp++ = '0';
+		*cp++ = hex[ch >> 4];
+		ch = hex[ch & 0x0f];
+	    }
+	    break;
+	}
+	*cp++ = ch;
+	*cp = '\0';
+	if (!json_append_buf(jsonc, buf))
+		debug_return_bool(false);
+    }
+    if (!json_append_buf(jsonc, "\""))
+	    debug_return_bool(false);
+
+    debug_return_bool(true);
+}
+
+bool
+sudo_json_init_v2(struct json_container *jsonc, int indent, bool minimal,
+    bool memfatal, bool quiet)
+{
+    debug_decl(sudo_json_init, SUDO_DEBUG_UTIL);
+
+    memset(jsonc, 0, sizeof(*jsonc));
+    jsonc->indent_level = indent;
+    jsonc->indent_increment = indent;
+    jsonc->minimal = minimal;
+    jsonc->memfatal = memfatal;
+    jsonc->quiet = quiet;
+    jsonc->buf = malloc(64 * 1024);
+    if (jsonc->buf == NULL) {
+	if (jsonc->memfatal) {
+	    sudo_fatalx(U_("%s: %s"),
+		__func__, U_("unable to allocate memory"));
+	}
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO|SUDO_DEBUG_LINENO,
+	    "%s: %s", __func__, "unable to allocate memory");
+	debug_return_bool(false);
+    }
+    *jsonc->buf = '\0';
+    jsonc->bufsize = 64 * 1024;
+
+    debug_return_bool(true);
+}
+
+bool
+sudo_json_init_v1(struct json_container *jsonc, int indent, bool minimal,
+    bool memfatal)
+{
+    return sudo_json_init_v2(jsonc, indent, minimal, memfatal, false);
+}
+
+void
+sudo_json_free_v1(struct json_container *jsonc)
+{
+    debug_decl(sudo_json_free, SUDO_DEBUG_UTIL);
+
+    free(jsonc->buf);
+    memset(jsonc, 0, sizeof(*jsonc));
+
+    debug_return;
+}
+
+bool
+sudo_json_open_object_v1(struct json_container *jsonc, const char *name)
+{
+    debug_decl(sudo_json_open_object, SUDO_DEBUG_UTIL);
+
+    /* Add comma if we are continuing an object/array. */
+    if (jsonc->need_comma) {
+	if (!json_append_buf(jsonc, ","))
+	    debug_return_bool(false);
+    }
+    if (!json_new_line(jsonc))
+	debug_return_bool(false);
+
+    if (name != NULL) {
+	json_append_string(jsonc, name);
+	if (!json_append_buf(jsonc, jsonc->minimal ? ":{" : ": {"))
+	    debug_return_bool(false);
+    } else {
+	if (!json_append_buf(jsonc, "{"))
+	    debug_return_bool(false);
+    }
+
+    jsonc->indent_level += jsonc->indent_increment;
+    jsonc->need_comma = false;
+
+    debug_return_bool(true);
+}
+
+bool
+sudo_json_close_object_v1(struct json_container *jsonc)
+{
+    debug_decl(sudo_json_close_object, SUDO_DEBUG_UTIL);
+
+    if (!jsonc->minimal) {
+	jsonc->indent_level -= jsonc->indent_increment;
+	if (!json_new_line(jsonc))
+	    debug_return_bool(false);
+    }
+    if (!json_append_buf(jsonc, "}"))
+	debug_return_bool(false);
+
+    debug_return_bool(true);
+}
+
+bool
+sudo_json_open_array_v1(struct json_container *jsonc, const char *name)
+{
+    debug_decl(sudo_json_open_array, SUDO_DEBUG_UTIL);
+
+    /* Add comma if we are continuing an object/array. */
+    if (jsonc->need_comma) {
+	if (!json_append_buf(jsonc, ","))
+	    debug_return_bool(false);
+    }
+    if (!json_new_line(jsonc))
+	debug_return_bool(false);
+
+    if (name != NULL) {
+	json_append_string(jsonc, name);
+	if (!json_append_buf(jsonc, jsonc->minimal ? ":[" : ": ["))
+	    debug_return_bool(false);
+    } else {
+	if (!json_append_buf(jsonc, "["))
+	    debug_return_bool(false);
+    }
+
+    jsonc->indent_level += jsonc->indent_increment;
+    jsonc->need_comma = false;
+
+    debug_return_bool(true);
+}
+
+bool
+sudo_json_close_array_v1(struct json_container *jsonc)
+{
+    debug_decl(sudo_json_close_array, SUDO_DEBUG_UTIL);
+
+    if (!jsonc->minimal) {
+	jsonc->indent_level -= jsonc->indent_increment;
+	if (!json_new_line(jsonc))
+	    debug_return_bool(false);
+    }
+    if (!json_append_buf(jsonc, "]"))
+	debug_return_bool(false);
+
+    debug_return_bool(true);
+}
+
+static bool
+sudo_json_add_value_int(struct json_container *jsonc, const char *name,
+    struct json_value *value, bool as_object)
+{
+    struct json_container saved_container = *jsonc;
+    char numbuf[(((sizeof(long long) * 8) + 2) / 3) + 2];
+    debug_decl(sudo_json_add_value, SUDO_DEBUG_UTIL);
+
+    /* Add comma if we are continuing an object/array. */
+    if (jsonc->need_comma) {
+	if (!json_append_buf(jsonc, ","))
+	    goto bad;
+    }
+    if (!json_new_line(jsonc))
+	goto bad;
+    jsonc->need_comma = true;
+
+    if (as_object) {
+	if (!json_append_buf(jsonc, jsonc->minimal ? "{" : "{ "))
+	    goto bad;
+    }
+
+    /* name */
+    if (name != NULL) {
+	if (!json_append_string(jsonc, name))
+	    goto bad;
+	if (!json_append_buf(jsonc, jsonc->minimal ? ":" : ": "))
+	    goto bad;
+    }
+
+    /* value */
+    switch (value->type) {
+    case JSON_STRING:
+	if (!json_append_string(jsonc, value->u.string))
+	    goto bad;
+	break;
+    case JSON_ID:
+	snprintf(numbuf, sizeof(numbuf), "%u", (unsigned int)value->u.id);
+	if (!json_append_buf(jsonc, numbuf))
+	    goto bad;
+	break;
+    case JSON_NUMBER:
+	snprintf(numbuf, sizeof(numbuf), "%lld", value->u.number);
+	if (!json_append_buf(jsonc, numbuf))
+	    goto bad;
+	break;
+    case JSON_NULL:
+	if (!json_append_buf(jsonc, "null"))
+	    goto bad;
+	break;
+    case JSON_BOOL:
+	if (!json_append_buf(jsonc, value->u.boolean ? "true" : "false"))
+	    goto bad;
+	break;
+    case JSON_ARRAY:
+	if (!jsonc->quiet)
+	    sudo_warnx("internal error: add JSON_ARRAY as a value");
+	goto bad;
+    case JSON_OBJECT:
+	if (!jsonc->quiet)
+	    sudo_warnx("internal error: add JSON_OBJECT as a value");
+	goto bad;
+    default:
+	if (!jsonc->quiet)
+	    sudo_warnx("internal error: unknown JSON type %d", value->type);
+	goto bad;
+    }
+
+    if (as_object) {
+	if (!json_append_buf(jsonc, jsonc->minimal ? "}" : " }"))
+	    goto bad;
+    }
+
+    debug_return_bool(true);
+bad:
+    /* Restore container but handle reallocation of buf. */
+    saved_container.buf = jsonc->buf;
+    saved_container.bufsize = jsonc->bufsize;
+    *jsonc = saved_container;
+    jsonc->buf[jsonc->buflen] = '\0';
+    debug_return_bool(false);
+}
+
+bool
+sudo_json_add_value_v1(struct json_container *jsonc, const char *name,
+    struct json_value *value)
+{
+    return sudo_json_add_value_int(jsonc, name, value, false);
+}
+
+bool
+sudo_json_add_value_as_object_v1(struct json_container *jsonc, const char *name,
+    struct json_value *value)
+{
+    return sudo_json_add_value_int(jsonc, name, value, true);
+}
+
+char *
+sudo_json_get_buf_v1(struct json_container *jsonc)
+{
+    return jsonc->buf;
+}
+
+unsigned int
+sudo_json_get_len_v1(struct json_container *jsonc)
+{
+    return jsonc->buflen;
+}
diff --git a/lib/util/key_val.c b/lib/util/key_val.c
new file mode 100644
index 0000000..91caad1
--- /dev/null
+++ b/lib/util/key_val.c
@@ -0,0 +1,56 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010-2012, 2014-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * Create a new key=value pair and return it.
+ * The caller is responsible for freeing the string.
+ */
+char *
+sudo_new_key_val_v1(const char *key, const char *val)
+{
+    size_t key_len = strlen(key);
+    size_t val_len = strlen(val);
+    char *cp, *str;
+    debug_decl(sudo_new_key_val, SUDO_DEBUG_UTIL);
+
+    cp = str = malloc(key_len + 1 + val_len + 1);
+    if (cp != NULL) {
+	memcpy(cp, key, key_len);
+	cp += key_len;
+	*cp++ = '=';
+	memcpy(cp, val, val_len);
+	cp += val_len;
+	*cp = '\0';
+    }
+
+    debug_return_str(str);
+}
diff --git a/lib/util/lbuf.c b/lib/util/lbuf.c
new file mode 100644
index 0000000..018fa5e
--- /dev/null
+++ b/lib/util/lbuf.c
@@ -0,0 +1,448 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2007-2015, 2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_lbuf.h"
+#include "sudo_util.h"
+
+void
+sudo_lbuf_init_v1(struct sudo_lbuf *lbuf, sudo_lbuf_output_t output,
+    int indent, const char *continuation, int cols)
+{
+    debug_decl(sudo_lbuf_init, SUDO_DEBUG_UTIL);
+
+    lbuf->output = output;
+    lbuf->continuation = continuation;
+    lbuf->indent = indent;
+    lbuf->cols = cols;
+    lbuf->error = 0;
+    lbuf->len = 0;
+    lbuf->size = 0;
+    lbuf->buf = NULL;
+
+    debug_return;
+}
+
+void
+sudo_lbuf_destroy_v1(struct sudo_lbuf *lbuf)
+{
+    debug_decl(sudo_lbuf_destroy, SUDO_DEBUG_UTIL);
+
+    free(lbuf->buf);
+    lbuf->error = 0;
+    lbuf->len = 0;
+    lbuf->size = 0;
+    lbuf->buf = NULL;
+
+    debug_return;
+}
+
+static bool
+sudo_lbuf_expand(struct sudo_lbuf *lbuf, unsigned int extra)
+{
+    debug_decl(sudo_lbuf_expand, SUDO_DEBUG_UTIL);
+
+    if (lbuf->len + extra + 1 <= lbuf->len) {
+	errno = ENOMEM;
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "integer overflow updating lbuf->len");
+	lbuf->error = 1;
+	debug_return_bool(false);
+    }
+
+    if (lbuf->len + extra + 1 > lbuf->size) {
+	unsigned int new_size = sudo_pow2_roundup(lbuf->len + extra + 1);
+	char *new_buf;
+
+	if (new_size < lbuf->size) {
+	    errno = ENOMEM;
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"integer overflow updating lbuf->size");
+	    lbuf->error = 1;
+	    debug_return_bool(false);
+	}
+	if (new_size < 1024)
+	    new_size = 1024;
+	if ((new_buf = realloc(lbuf->buf, new_size)) == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"unable to allocate memory");
+	    lbuf->error = 1;
+	    debug_return_bool(false);
+	}
+	lbuf->buf = new_buf;
+	lbuf->size = new_size;
+    }
+    debug_return_bool(true);
+}
+
+/*
+ * Escape a character in octal form (#0n) and store it as a string
+ * in buf, which must have at least 6 bytes available.
+ * Returns the length of buf, not counting the terminating NUL byte.
+ */
+static int
+escape(unsigned char ch, char *buf)
+{
+    const int len = ch < 0100 ? (ch < 010 ? 3 : 4) : 5;
+
+    /* Work backwards from the least significant digit to most significant. */
+    switch (len) {
+    case 5:
+	buf[4] = (ch & 7) + '0';
+	ch >>= 3;
+	FALLTHROUGH;
+    case 4:
+	buf[3] = (ch & 7) + '0';
+	ch >>= 3;
+	FALLTHROUGH;
+    case 3:
+	buf[2] = (ch & 7) + '0';
+	buf[1] = '0';
+	buf[0] = '#';
+	break;
+    }
+    buf[len] = '\0';
+
+    return len;
+}
+
+/*
+ * Parse the format and append strings, only %s and %% escapes are supported.
+ * Any non-printable characters are escaped in octal as #0nn.
+ */
+bool
+sudo_lbuf_append_esc_v1(struct sudo_lbuf *lbuf, int flags, const char *fmt, ...)
+{
+    unsigned int saved_len = lbuf->len;
+    bool ret = false;
+    const char *s;
+    va_list ap;
+    debug_decl(sudo_lbuf_append_esc, SUDO_DEBUG_UTIL);
+
+    if (sudo_lbuf_error(lbuf))
+	debug_return_bool(false);
+
+#define should_escape(ch) \
+    ((ISSET(flags, LBUF_ESC_CNTRL) && iscntrl((unsigned char)ch)) || \
+    (ISSET(flags, LBUF_ESC_BLANK) && isblank((unsigned char)ch)))
+#define should_quote(ch) \
+    (ISSET(flags, LBUF_ESC_QUOTE) && (ch == '\'' || ch == '\\'))
+
+    va_start(ap, fmt);
+    while (*fmt != '\0') {
+	if (fmt[0] == '%' && fmt[1] == 's') {
+	    if ((s = va_arg(ap, char *)) == NULL)
+		s = "(NULL)";
+	    while (*s != '\0') {
+		if (should_escape(*s)) {
+		    if (!sudo_lbuf_expand(lbuf, sizeof("#0177") - 1))
+			goto done;
+		    lbuf->len += escape(*s++, lbuf->buf + lbuf->len);
+		    continue;
+		}
+		if (should_quote(*s)) {
+		    if (!sudo_lbuf_expand(lbuf, 2))
+			goto done;
+		    lbuf->buf[lbuf->len++] = '\\';
+		    lbuf->buf[lbuf->len++] = *s++;
+		    continue;
+		}
+		if (!sudo_lbuf_expand(lbuf, 1))
+		    goto done;
+		lbuf->buf[lbuf->len++] = *s++;
+	    }
+	    fmt += 2;
+	    continue;
+	}
+	if (should_escape(*fmt)) {
+	    if (!sudo_lbuf_expand(lbuf, sizeof("#0177") - 1))
+		goto done;
+	    if (*fmt == '\'') {
+		lbuf->buf[lbuf->len++] = '\\';
+		lbuf->buf[lbuf->len++] = *fmt++;
+	    } else {
+		lbuf->len += escape(*fmt++, lbuf->buf + lbuf->len);
+	    }
+	    continue;
+	}
+	if (!sudo_lbuf_expand(lbuf, 1))
+	    goto done;
+	lbuf->buf[lbuf->len++] = *fmt++;
+    }
+    ret = true;
+
+done:
+    if (!ret)
+	lbuf->len = saved_len;
+    if (lbuf->size != 0)
+	lbuf->buf[lbuf->len] = '\0';
+    va_end(ap);
+
+    debug_return_bool(ret);
+}
+
+/*
+ * Parse the format and append strings, only %s and %% escapes are supported.
+ * Any characters in set are quoted with a backslash.
+ */
+bool
+sudo_lbuf_append_quoted_v1(struct sudo_lbuf *lbuf, const char *set, const char *fmt, ...)
+{
+    unsigned int saved_len = lbuf->len;
+    bool ret = false;
+    const char *cp, *s;
+    va_list ap;
+    int len;
+    debug_decl(sudo_lbuf_append_quoted, SUDO_DEBUG_UTIL);
+
+    if (sudo_lbuf_error(lbuf))
+	debug_return_bool(false);
+
+    va_start(ap, fmt);
+    while (*fmt != '\0') {
+	if (fmt[0] == '%' && fmt[1] == 's') {
+	    if ((s = va_arg(ap, char *)) == NULL)
+		s = "(NULL)";
+	    while ((cp = strpbrk(s, set)) != NULL) {
+		len = (int)(cp - s);
+		if (!sudo_lbuf_expand(lbuf, len + 2))
+		    goto done;
+		memcpy(lbuf->buf + lbuf->len, s, len);
+		lbuf->len += len;
+		lbuf->buf[lbuf->len++] = '\\';
+		lbuf->buf[lbuf->len++] = *cp;
+		s = cp + 1;
+	    }
+	    if (*s != '\0') {
+		len = strlen(s);
+		if (!sudo_lbuf_expand(lbuf, len))
+		    goto done;
+		memcpy(lbuf->buf + lbuf->len, s, len);
+		lbuf->len += len;
+	    }
+	    fmt += 2;
+	    continue;
+	}
+	if (!sudo_lbuf_expand(lbuf, 2))
+	    goto done;
+	if (strchr(set, *fmt) != NULL)
+	    lbuf->buf[lbuf->len++] = '\\';
+	lbuf->buf[lbuf->len++] = *fmt++;
+    }
+    ret = true;
+
+done:
+    if (!ret)
+	lbuf->len = saved_len;
+    if (lbuf->size != 0)
+	lbuf->buf[lbuf->len] = '\0';
+    va_end(ap);
+
+    debug_return_bool(ret);
+}
+
+/*
+ * Parse the format and append strings, only %s and %% escapes are supported.
+ */
+bool
+sudo_lbuf_append_v1(struct sudo_lbuf *lbuf, const char *fmt, ...)
+{
+    unsigned int saved_len = lbuf->len;
+    bool ret = false;
+    va_list ap;
+    const char *s;
+    int len;
+    debug_decl(sudo_lbuf_append, SUDO_DEBUG_UTIL);
+
+    if (sudo_lbuf_error(lbuf))
+	debug_return_bool(false);
+
+    va_start(ap, fmt);
+    while (*fmt != '\0') {
+	if (fmt[0] == '%' && fmt[1] == 's') {
+	    if ((s = va_arg(ap, char *)) == NULL)
+		s = "(NULL)";
+	    len = strlen(s);
+	    if (!sudo_lbuf_expand(lbuf, len))
+		goto done;
+	    memcpy(lbuf->buf + lbuf->len, s, len);
+	    lbuf->len += len;
+	    fmt += 2;
+	    continue;
+	}
+	if (!sudo_lbuf_expand(lbuf, 1))
+	    goto done;
+	lbuf->buf[lbuf->len++] = *fmt++;
+    }
+    ret = true;
+
+done:
+    if (!ret)
+	lbuf->len = saved_len;
+    if (lbuf->size != 0)
+	lbuf->buf[lbuf->len] = '\0';
+    va_end(ap);
+
+    debug_return_bool(ret);
+}
+
+/* XXX - check output function return value */
+static void
+sudo_lbuf_println(struct sudo_lbuf *lbuf, char *line, int len)
+{
+    char *cp, save;
+    int i, have, contlen = 0;
+    int indent = lbuf->indent;
+    bool is_comment = false;
+    debug_decl(sudo_lbuf_println, SUDO_DEBUG_UTIL);
+
+    /* Comment lines don't use continuation and only indent is for "# " */
+    if (line[0] == '#' && isblank((unsigned char)line[1])) {
+	is_comment = true;
+	indent = 2;
+    }
+    if (lbuf->continuation != NULL && !is_comment)
+	contlen = strlen(lbuf->continuation);
+
+    /*
+     * Print the buffer, splitting the line as needed on a word
+     * boundary.
+     */
+    cp = line;
+    have = lbuf->cols;
+    while (cp != NULL && *cp != '\0') {
+	char *ep = NULL;
+	int need = len - (int)(cp - line);
+
+	if (need > have) {
+	    have -= contlen;		/* subtract for continuation char */
+	    if ((ep = memrchr(cp, ' ', have)) == NULL)
+		ep = memchr(cp + have, ' ', need - have);
+	    if (ep != NULL)
+		need = (int)(ep - cp);
+	}
+	if (cp != line) {
+	    if (is_comment) {
+		lbuf->output("# ");
+	    } else {
+		/* indent continued lines */
+		/* XXX - build up string instead? */
+		for (i = 0; i < indent; i++)
+		    lbuf->output(" ");
+	    }
+	}
+	/* NUL-terminate cp for the output function and restore afterwards */
+	save = cp[need];
+	cp[need] = '\0';
+	lbuf->output(cp);
+	cp[need] = save;
+	cp = ep;
+
+	/*
+	 * If there is more to print, reset have, incremement cp past
+	 * the whitespace, and print a line continuaton char if needed.
+	 */
+	if (cp != NULL) {
+	    have = lbuf->cols - indent;
+	    ep = line + len;
+	    while (cp < ep && isblank((unsigned char)*cp)) {
+		cp++;
+	    }
+	    if (contlen)
+		lbuf->output(lbuf->continuation);
+	}
+	lbuf->output("\n");
+    }
+
+    debug_return;
+}
+
+/*
+ * Print the buffer with word wrap based on the tty width.
+ * The lbuf is reset on return.
+ * XXX - check output function return value
+ */
+void
+sudo_lbuf_print_v1(struct sudo_lbuf *lbuf)
+{
+    char *cp, *ep;
+    int len;
+    debug_decl(sudo_lbuf_print, SUDO_DEBUG_UTIL);
+
+    if (lbuf->buf == NULL || lbuf->len == 0)
+	goto done;
+
+    /* For very small widths just give up... */
+    len = lbuf->continuation ? strlen(lbuf->continuation) : 0;
+    if (lbuf->cols <= lbuf->indent + len + 20) {
+	lbuf->buf[lbuf->len] = '\0';
+	lbuf->output(lbuf->buf);
+	if (lbuf->buf[lbuf->len - 1] != '\n')
+	    lbuf->output("\n");
+	goto done;
+    }
+
+    /* Print each line in the buffer */
+    for (cp = lbuf->buf; cp != NULL && *cp != '\0'; ) {
+	if (*cp == '\n') {
+	    lbuf->output("\n");
+	    cp++;
+	} else {
+	    len = lbuf->len - (cp - lbuf->buf);
+	    if ((ep = memchr(cp, '\n', len)) != NULL)
+		len = (int)(ep - cp);
+	    if (len)
+		sudo_lbuf_println(lbuf, cp, len);
+	    cp = ep ? ep + 1 : NULL;
+	}
+    }
+
+done:
+    lbuf->len = 0;		/* reset the buffer for re-use. */
+    lbuf->error = 0;
+
+    debug_return;
+}
+
+bool
+sudo_lbuf_error_v1(struct sudo_lbuf *lbuf)
+{
+    if (lbuf != NULL && lbuf->error != 0)
+	return true;
+    return false;
+}
+
+void
+sudo_lbuf_clearerr_v1(struct sudo_lbuf *lbuf)
+{
+    if (lbuf != NULL)
+	lbuf->error = 0;
+}
diff --git a/lib/util/localtime_r.c b/lib/util/localtime_r.c
new file mode 100644
index 0000000..674cb1a
--- /dev/null
+++ b/lib/util/localtime_r.c
@@ -0,0 +1,49 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_LOCALTIME_R
+
+#include <sys/types.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+/*
+ * Fake localtime_r() that just stores the result.
+ * Still has the normal localtime() side effects.
+ */
+struct tm *
+sudo_localtime_r(const time_t *timer, struct tm *result)
+{
+    struct tm *tm;
+
+    if ((tm = localtime(timer)) == NULL)
+	return NULL;
+    memcpy(result, tm, sizeof(struct tm));
+
+    return result;
+}
+#endif /* HAVE_LOCALTIME_T */
diff --git a/lib/util/locking.c b/lib/util/locking.c
new file mode 100644
index 0000000..638b082
--- /dev/null
+++ b/lib/util/locking.c
@@ -0,0 +1,143 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1999-2005, 2007, 2009-2015
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_debug.h"
+
+bool
+sudo_lock_file_v1(int fd, int type)
+{
+    return sudo_lock_region_v1(fd, type, 0);
+}
+
+/*
+ * Lock/unlock all or part of a file.
+ */
+#ifdef HAVE_LOCKF
+bool
+sudo_lock_region_v1(int fd, int type, off_t len)
+{
+    int op, rc;
+    off_t oldpos = -1;
+    debug_decl(sudo_lock_region, SUDO_DEBUG_UTIL);
+
+    switch (type) {
+	case SUDO_LOCK:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: lock %d:%lld",
+		__func__, fd, (long long)len);
+	    op = F_LOCK;
+	    break;
+	case SUDO_TLOCK:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: tlock %d:%lld",
+		__func__, fd, (long long)len);
+	    op = F_TLOCK;
+	    break;
+	case SUDO_UNLOCK:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: unlock %d:%lld",
+		__func__, fd, (long long)len);
+	    op = F_ULOCK;
+	    /* Must seek to start of file to unlock the entire thing. */
+	    if (len == 0 && (oldpos = lseek(fd, 0, SEEK_CUR)) != -1) {
+		if (lseek(fd, 0, SEEK_SET) == -1) {
+		    sudo_debug_printf(
+			SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+			"unable to seek to beginning");
+		}
+	    }
+	    break;
+	default:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: bad lock type %d",
+		__func__, type);
+	    errno = EINVAL;
+	    debug_return_bool(false);
+    }
+    rc = lockf(fd, op, len);
+    if (oldpos != -1) {
+	if (lseek(fd, oldpos, SEEK_SET) == -1) {
+	    sudo_debug_printf(
+		SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+		"unable to restore offset");
+	}
+    }
+    debug_return_bool(rc == 0);
+}
+#else
+bool
+sudo_lock_region_v1(int fd, int type, off_t len)
+{
+    struct flock lock;
+    int func;
+    debug_decl(sudo_lock_file, SUDO_DEBUG_UTIL);
+
+    switch (type) {
+	case SUDO_LOCK:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: lock %d:%lld",
+		__func__, fd, (long long)len);
+	    lock.l_type = F_WRLCK;
+	    func = F_SETLKW;
+	    break;
+	case SUDO_TLOCK:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: tlock %d:%lld",
+		__func__, fd, (long long)len);
+	    lock.l_type = F_WRLCK;
+	    func = F_SETLK;
+	    break;
+	case SUDO_UNLOCK:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: unlock %d:%lld",
+		__func__, fd, (long long)len);
+	    lock.l_type = F_UNLCK;
+	    func = F_SETLK;
+	    break;
+	default:
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: bad lock type %d",
+		__func__, type);
+	    errno = EINVAL;
+	    debug_return_bool(false);
+    }
+    lock.l_start = 0;
+    lock.l_len = len;
+    lock.l_pid = 0;
+    lock.l_whence = len ? SEEK_CUR : SEEK_SET;
+
+    debug_return_bool(fcntl(fd, func, &lock) == 0);
+}
+#endif
diff --git a/lib/util/logfac.c b/lib/util/logfac.c
new file mode 100644
index 0000000..5a97ac3
--- /dev/null
+++ b/lib/util/logfac.c
@@ -0,0 +1,90 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1999-2005, 2007-2019
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <string.h>
+#include <syslog.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * For converting between syslog numbers and strings.
+ */
+struct strmap {
+    const char *name;
+    int num;
+};
+
+static const struct strmap facilities[] = {
+#ifdef LOG_AUTHPRIV
+	{ "authpriv",	LOG_AUTHPRIV },
+#endif
+	{ "auth",	LOG_AUTH },
+	{ "daemon",	LOG_DAEMON },
+	{ "user",	LOG_USER },
+	{ "local0",	LOG_LOCAL0 },
+	{ "local1",	LOG_LOCAL1 },
+	{ "local2",	LOG_LOCAL2 },
+	{ "local3",	LOG_LOCAL3 },
+	{ "local4",	LOG_LOCAL4 },
+	{ "local5",	LOG_LOCAL5 },
+	{ "local6",	LOG_LOCAL6 },
+	{ "local7",	LOG_LOCAL7 },
+	{ NULL,		-1 }
+};
+
+bool
+sudo_str2logfac_v1(const char *str, int *logfac)
+{
+    const struct strmap *fac;
+    debug_decl(sudo_str2logfac, SUDO_DEBUG_UTIL);
+
+    for (fac = facilities; fac->name != NULL; fac++) {
+	if (strcmp(str, fac->name) == 0) {
+	    *logfac = fac->num;
+	    debug_return_bool(true);
+	}
+    }
+    debug_return_bool(false);
+}
+
+const char *
+sudo_logfac2str_v1(int num)
+{
+    const struct strmap *fac;
+    debug_decl(sudo_logfac2str, SUDO_DEBUG_UTIL);
+
+    for (fac = facilities; fac->name != NULL; fac++) {
+	if (fac->num == num)
+	    break;
+    }
+    debug_return_const_str(fac->name);
+}
diff --git a/lib/util/logpri.c b/lib/util/logpri.c
new file mode 100644
index 0000000..a6503bd
--- /dev/null
+++ b/lib/util/logpri.c
@@ -0,0 +1,85 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1999-2005, 2007-2019
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <string.h>
+#include <syslog.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * For converting between syslog numbers and strings.
+ */
+struct strmap {
+    const char *name;
+    int num;
+};
+
+static const struct strmap priorities[] = {
+	{ "alert",	LOG_ALERT },
+	{ "crit",	LOG_CRIT },
+	{ "debug",	LOG_DEBUG },
+	{ "emerg",	LOG_EMERG },
+	{ "err",	LOG_ERR },
+	{ "info",	LOG_INFO },
+	{ "notice",	LOG_NOTICE },
+	{ "warning",	LOG_WARNING },
+	{ "none",	-1 },
+	{ NULL,		-1 }
+};
+
+bool
+sudo_str2logpri_v1(const char *str, int *logpri)
+{
+    const struct strmap *pri;
+    debug_decl(sudo_str2logpri, SUDO_DEBUG_UTIL);
+
+    for (pri = priorities; pri->name != NULL; pri++) {
+	if (strcmp(str, pri->name) == 0) {
+	    *logpri = pri->num;
+	    debug_return_bool(true);
+	}
+    }
+    debug_return_bool(false);
+}
+
+const char *
+sudo_logpri2str_v1(int num)
+{
+    const struct strmap *pri;
+    debug_decl(sudo_logpri2str, SUDO_DEBUG_UTIL);
+
+    for (pri = priorities; pri->name != NULL; pri++) {
+	if (pri->num == num)
+	    break;
+    }
+    debug_return_const_str(pri->name);
+}
diff --git a/lib/util/memrchr.c b/lib/util/memrchr.c
new file mode 100644
index 0000000..a5a1177
--- /dev/null
+++ b/lib/util/memrchr.c
@@ -0,0 +1,51 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2007, 2010-2014
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_MEMRCHR
+
+#include <sys/types.h>
+
+#include "sudo_compat.h"
+
+/*
+ * Reverse memchr()
+ * Find the last occurrence of 'c' in the buffer 's' of size 'n'.
+ */
+void *
+sudo_memrchr(const void *s, int c, size_t n)
+{
+    const unsigned char *cp;
+
+    if (n != 0) {
+	cp = (unsigned char *)s + n;
+	do {
+	    if (*(--cp) == (unsigned char)c)
+		return (void *)cp;
+	} while (--n != 0);
+    }
+    return (void *)0;
+}
+#endif /* HAVE_MEMRCHR */
diff --git a/lib/util/mkdir_parents.c b/lib/util/mkdir_parents.c
new file mode 100644
index 0000000..61867a3
--- /dev/null
+++ b/lib/util/mkdir_parents.c
@@ -0,0 +1,199 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif /* HAVE_STDBOOL_H */
+#include <string.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+#ifndef O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+
+/*
+ * Returns true if fd is a directory, else false.
+ * Warns on failure if not quiet.
+ */
+static bool
+is_dir(int dfd, const char *name, int namelen, bool quiet)
+{
+    struct stat sb;
+    debug_decl(is_dir, SUDO_DEBUG_UTIL);
+
+    if (fstat(dfd, &sb) != 0) {
+	if (!quiet) {
+	    sudo_warn(U_("unable to stat %.*s"), namelen, name);
+	}
+	debug_return_bool(false);
+    }
+    if (!S_ISDIR(sb.st_mode)) {
+	if (!quiet) {
+	    sudo_warnx(U_("%.*s exists but is not a directory (0%o)"),
+		namelen, name, (unsigned int) sb.st_mode);
+	}
+	debug_return_bool(false);
+    }
+
+    debug_return_bool(true);
+}
+
+/*
+ * Create any parent directories needed by path (but not path itself)
+ * and return an open fd for the parent directory or -1 on error.
+ */
+int
+sudo_open_parent_dir_v1(const char *path, uid_t uid, gid_t gid, mode_t mode,
+    bool quiet)
+{
+    const char *cp, *ep, *pathend;
+    char name[PATH_MAX];
+    int parentfd;
+    debug_decl(sudo_open_parent_dir, SUDO_DEBUG_UTIL);
+
+    /* Starting parent dir is either root or cwd. */
+    cp = path;
+    if (*cp == '/') {
+	do {
+	    cp++;
+	} while (*cp == '/');
+	parentfd = open("/", O_RDONLY|O_NONBLOCK);
+    } else {
+	parentfd = open(".", O_RDONLY|O_NONBLOCK);
+    }
+    if (parentfd == -1) {
+	if (!quiet)
+	    sudo_warn(U_("unable to open %s"), *path == '/' ? "/" : ".");
+	debug_return_int(-1);
+    }
+
+    /* Iterate over path components, skipping the last one. */
+    pathend = cp + strlen(cp);
+    for (cp = sudo_strsplit(cp, pathend, "/", &ep); cp != NULL && ep < pathend;
+	cp = sudo_strsplit(NULL, pathend, "/", &ep)) {
+	size_t len = (size_t)(ep - cp);
+	int dfd;
+
+	sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+	    "mkdir %.*s, mode 0%o, uid %d, gid %d", (int)(ep - path), path,
+	    (unsigned int)mode, (int)uid, (int)gid);
+	if (len >= sizeof(name)) {
+	    errno = ENAMETOOLONG;
+	    if (!quiet)
+		sudo_warn(U_("unable to mkdir %.*s"), (int)(ep - path), path);
+	    goto bad;
+	}
+	memcpy(name, cp, len);
+	name[len] = '\0';
+reopen:
+	dfd = openat(parentfd, name, O_RDONLY|O_NONBLOCK, 0);
+	if (dfd == -1) {
+	    if (errno != ENOENT) {
+		if (!quiet) {
+		    sudo_warn(U_("unable to open %.*s"),
+			(int)(ep - path), path);
+		}
+		goto bad;
+	    }
+	    if (mkdirat(parentfd, name, mode) == 0) {
+		dfd = openat(parentfd, name, O_RDONLY|O_NONBLOCK|O_NOFOLLOW, 0);
+		if (dfd == -1) {
+		    if (!quiet) {
+			sudo_warn(U_("unable to open %.*s"),
+			    (int)(ep - path), path);
+		    }
+		    goto bad;
+		}
+		/* Make sure the path we created is still a directory. */
+		if (!is_dir(dfd, path, ep - path, quiet)) {
+		    close(dfd);
+		    goto bad;
+		}
+		if (uid != (uid_t)-1 && gid != (gid_t)-1) {
+		    if (fchown(dfd, uid, gid) != 0) {
+			sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,
+			    "%s: unable to chown %d:%d %.*s", __func__,
+			    (int)uid, (int)gid, (int)(ep - path), path);
+		    }
+		}
+	    } else {
+		if (errno == EEXIST)
+		    goto reopen;
+		if (!quiet) {
+		    sudo_warn(U_("unable to mkdir %.*s"),
+			(int)(ep - path), path);
+		}
+		goto bad;
+	    }
+	} else {
+	    /* Already exists, make sure it is a directory. */
+	    if (!is_dir(dfd, path, ep - path, quiet)) {
+		close(dfd);
+		goto bad;
+	    }
+	}
+	close(parentfd);
+	parentfd = dfd;
+    }
+
+    debug_return_int(parentfd);
+bad:
+    if (parentfd != -1)
+	close(parentfd);
+    debug_return_int(-1);
+}
+
+/*
+ * Create any parent directories needed by path (but not path itself).
+ * Not currently used.
+ */
+bool
+sudo_mkdir_parents_v1(const char *path, uid_t uid, gid_t gid, mode_t mode,
+    bool quiet)
+{
+    int fd;
+    debug_decl(sudo_mkdir_parents, SUDO_DEBUG_UTIL);
+
+    fd = sudo_open_parent_dir(path, uid, gid, mode, quiet);
+    if (fd == -1)
+	debug_return_bool(false);
+    close(fd);
+    debug_return_bool(true);
+}
diff --git a/lib/util/mkdirat.c b/lib/util/mkdirat.c
new file mode 100644
index 0000000..4dee92d
--- /dev/null
+++ b/lib/util/mkdirat.c
@@ -0,0 +1,61 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015, 2019-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_MKDIRAT
+int
+sudo_mkdirat(int dfd, const char *path, mode_t mode)
+{
+    int ret, odfd;
+
+    if (dfd == (int)AT_FDCWD)
+	return mkdir(path, mode);
+
+    /* Save cwd */
+    if ((odfd = open(".", O_RDONLY)) == -1)
+	return -1;
+
+    if (fchdir(dfd) == -1) {
+	close(odfd);
+	return -1;
+    }
+
+    ret = mkdir(path, mode);
+
+    /* Restore cwd */
+    if (fchdir(odfd) == -1) {
+	/* Should not happen */
+	ret = -1;
+    }
+    close(odfd);
+
+    return ret;
+}
+#endif /* HAVE_MKDIRAT */
diff --git a/lib/util/mksiglist.c b/lib/util/mksiglist.c
new file mode 100644
index 0000000..2c99b21
--- /dev/null
+++ b/lib/util/mksiglist.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010-2012, 2015, 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <signal.h>
+
+#include "sudo_compat.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+int
+main(int argc, char *argv[])
+{
+    unsigned int i;
+
+#include "mksiglist.h"
+
+    printf("const char *const sudo_sys_siglist[] = {\n");
+    for (i = 0; i < nitems(sudo_sys_siglist); i++) {
+	if (sudo_sys_siglist[i] != NULL) {
+	    printf("    \"%s\",\n", sudo_sys_siglist[i]);
+	} else {
+	    printf("    \"Signal %u\",\n", i);
+	}
+    }
+    printf("};\n");
+
+    exit(EXIT_SUCCESS);
+}
diff --git a/lib/util/mksigname.c b/lib/util/mksigname.c
new file mode 100644
index 0000000..e501334
--- /dev/null
+++ b/lib/util/mksigname.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010-2012, 2015, 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <signal.h>
+
+#include "sudo_compat.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+int
+main(int argc, char *argv[])
+{
+    unsigned int i;
+
+#include "mksigname.h"
+
+    printf("const char *const sudo_sys_signame[] = {\n");
+    for (i = 0; i < nitems(sudo_sys_signame); i++) {
+	if (sudo_sys_signame[i] != NULL) {
+	    printf("    \"%s\",\n", sudo_sys_signame[i]);
+	} else {
+	    printf("    \"Signal %u\",\n", i);
+	}
+    }
+    printf("};\n");
+
+    exit(EXIT_SUCCESS);
+}
diff --git a/lib/util/mktemp.c b/lib/util/mktemp.c
new file mode 100644
index 0000000..1540e51
--- /dev/null
+++ b/lib/util/mktemp.c
@@ -0,0 +1,172 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2001, 2003, 2004, 2008-2011, 2013, 2015, 2017, 2018, 2022
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#if (!defined(HAVE_MKDTEMPAT) && !defined(HAVE_MKDTEMPAT_NP)) || \
+    (!defined(HAVE_MKOSTEMPSAT) && !defined(HAVE_MKOSTEMPSAT_NP))
+
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_rand.h"
+#include "pathnames.h"
+
+#define MKTEMP_FILE	1
+#define MKTEMP_DIR	2
+
+#define TEMPCHARS	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+#define NUM_CHARS	(sizeof(TEMPCHARS) - 1)
+#define MIN_X		6
+
+#define MKOTEMP_FLAGS	(O_APPEND | O_CLOEXEC | O_SYNC)
+
+static int
+mktemp_internal(int dfd, char *path, int slen, int mode, int flags)
+{
+	char *start, *cp, *ep;
+	const char tempchars[] = TEMPCHARS;
+	unsigned int tries;
+	size_t len;
+	int fd;
+
+	len = strlen(path);
+	if (len < MIN_X || slen < 0 || (size_t)slen > len - MIN_X) {
+		errno = EINVAL;
+		return -1;
+	}
+	ep = path + len - slen;
+
+	for (start = ep; start > path && start[-1] == 'X'; start--)
+		;
+	if (ep - start < MIN_X) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (flags & ~MKOTEMP_FLAGS) {
+		errno = EINVAL;
+		return -1;
+	}
+	flags |= O_CREAT | O_EXCL | O_RDWR;
+
+	tries = INT_MAX;
+	do {
+		cp = start;
+		do {
+			unsigned short rbuf[16];
+			unsigned int i;
+
+			/*
+			 * Avoid lots of arc4random() calls by using
+			 * a buffer sized for up to 16 Xs at a time.
+			 */
+			arc4random_buf(rbuf, sizeof(rbuf));
+			for (i = 0; i < nitems(rbuf) && cp != ep; i++)
+				*cp++ = tempchars[rbuf[i] % NUM_CHARS];
+		} while (cp != ep);
+
+		switch (mode) {
+		case MKTEMP_FILE:
+			fd = openat(dfd, path, flags, S_IRUSR|S_IWUSR);
+			if (fd != -1 || errno != EEXIST)
+				return fd;
+			break;
+		case MKTEMP_DIR:
+			if (mkdirat(dfd, path, S_IRWXU) == 0)
+				return 0;
+			if (errno != EEXIST)
+				return -1;
+			break;
+		}
+	} while (--tries);
+
+	errno = EEXIST;
+	return -1;
+}
+
+char *
+sudo_mkdtemp(char *path)
+{
+	if (mktemp_internal(AT_FDCWD, path, 0, MKTEMP_DIR, 0) == -1)
+		return NULL;
+	return path;
+}
+
+char *
+sudo_mkdtempat(int dfd, char *path)
+{
+	if (mktemp_internal(dfd, path, 0, MKTEMP_DIR, 0) == -1)
+		return NULL;
+	return path;
+}
+
+int
+sudo_mkostempsat(int dfd, char *path, int slen, int flags)
+{
+	return mktemp_internal(dfd, path, slen, MKTEMP_FILE, flags);
+}
+
+#ifdef notyet
+int
+sudo_mkostemps(char *path, int slen, int flags)
+{
+	return mktemp_internal(AT_FDCWD, path, slen, MKTEMP_FILE, flags);
+}
+#endif
+
+int
+sudo_mkstemp(char *path)
+{
+	return mktemp_internal(AT_FDCWD, path, 0, MKTEMP_FILE, 0);
+}
+
+#ifdef notyet
+int
+sudo_mkostemp(char *path, int flags)
+{
+	return mktemp_internal(AT_FDCWD, path, 0, MKTEMP_FILE, flags);
+}
+#endif
+
+int
+sudo_mkstemps(char *path, int slen)
+{
+	return mktemp_internal(AT_FDCWD, path, slen, MKTEMP_FILE, 0);
+}
+#endif /* !HAVE_MKDTEMPAT || !HAVE_MKOSTEMPSAT */
diff --git a/lib/util/mmap_alloc.c b/lib/util/mmap_alloc.c
new file mode 100644
index 0000000..cd678a0
--- /dev/null
+++ b/lib/util/mmap_alloc.c
@@ -0,0 +1,160 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+#if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
+# define MAP_ANON MAP_ANONYMOUS
+#endif
+
+#ifndef MAP_FAILED
+# define MAP_FAILED ((void *)-1)
+#endif
+
+/*
+ * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
+ * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
+ */
+#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
+
+/*
+ * Allocate "size" bytes via mmap().
+ * Space is allocated to store the size for later unmapping.
+ */
+void *
+sudo_mmap_alloc_v1(size_t size)
+{
+    void *ptr;
+    unsigned long *ulp;
+#ifndef MAP_ANON
+    int fd;
+
+    /* SunOS-style mmap allocation using /dev/zero. */
+    if ((fd = open("/dev/zero", O_RDWR)) == -1)
+	return NULL;
+    size += sizeof(unsigned long);
+    ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+    close(fd);
+#else
+    size += sizeof(unsigned long);
+    ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+#endif
+    if (ptr == MAP_FAILED) {
+	errno = ENOMEM;
+	return NULL;
+    }
+
+    /* Store size before the actual data. */
+    ulp = (unsigned long *)ptr;
+    ulp[0] = size;
+    return (void *)&ulp[1];
+}
+
+/*
+ * Allocate "nmemb" elements of "size" bytes via mmap().
+ * If overflow would occur, errno is set to ENOMEM and
+ * NULL is returned.
+ */
+void *
+sudo_mmap_allocarray_v1(size_t nmemb, size_t size)
+{
+    if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
+	    nmemb > 0 && SIZE_MAX / nmemb < size) {
+	errno = ENOMEM;
+	return NULL;
+    }
+    return sudo_mmap_alloc_v1(nmemb * size);
+}
+
+/*
+ * Make a copy of "str" via mmap() and return it.
+ */
+char *
+sudo_mmap_strdup_v1(const char *str)
+{
+    size_t len = strlen(str);
+    char *newstr;
+
+    if (len == SIZE_MAX) {
+	errno = ENOMEM;
+	return NULL;
+    }
+    newstr = sudo_mmap_alloc_v1(len + 1);
+    if (newstr != NULL) {
+        memcpy(newstr, str, len);
+        newstr[len] = '\0';
+    }
+
+    return newstr;
+}
+
+/*
+ * Set the page permissions for the allocation represented by "ptr" to
+ * read-only.  Returns 0 on success, -1 on failure.
+ */
+int
+sudo_mmap_protect_v1(void *ptr)
+{
+    if (ptr != NULL) {
+	unsigned long *ulp = ptr;
+	const unsigned long size = ulp[-1];
+	return mprotect((void *)&ulp[-1], size, PROT_READ);
+    }
+
+    /* Can't protect NULL. */
+    errno = EINVAL;
+    return -1;
+}
+
+/*
+ * Free "ptr" allocated by sudo_mmap_alloc().
+ * The allocated size is stored (as unsigned long) in ptr[-1].
+ */
+void
+sudo_mmap_free_v1(void *ptr)
+{
+    if (ptr != NULL) {
+	unsigned long *ulp = (unsigned long *)ptr - 1;
+	const unsigned long size = ulp[0];
+	int saved_errno = errno;
+
+	(void)munmap((void *)ulp, size);
+	errno = saved_errno;
+    }
+}
diff --git a/lib/util/multiarch.c b/lib/util/multiarch.c
new file mode 100644
index 0000000..53d85d7
--- /dev/null
+++ b/lib/util/multiarch.c
@@ -0,0 +1,104 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifdef __linux__
+# include <sys/stat.h>
+# include <sys/utsname.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+# if defined(__linux__)
+/* 
+ * On Linux systems that use multi-arch, the actual DSO may be in a
+ * machine-specific subdirectory.  If the specified path contains
+ * /lib/ or /libexec/, insert a multi-arch directory after it.
+ * If sb is non-NULL, stat(2) will be called on the new path, filling in sb.
+ * Returns a dynamically allocated string on success and NULL on failure.
+ */
+char *
+sudo_stat_multiarch_v1(const char *path, struct stat *sb)
+{
+#  if defined(__ILP32__)
+    const char *libdirs[] = { "/libx32/", "/lib/", "/libexec/", NULL };
+#  elif defined(__LP64__)
+    const char *libdirs[] = { "/lib64/", "/lib/", "/libexec/", NULL };
+#  else
+    const char *libdirs[] = { "/lib32/", "/lib/", "/libexec/", NULL };
+#  endif
+    const char **lp, *lib, *slash;
+    struct utsname unamebuf;
+    char *newpath = NULL;
+    int len;
+
+    if (uname(&unamebuf) == -1)
+	return NULL;
+
+    for (lp = libdirs; *lp != NULL; lp++) {
+	/* Replace lib64, lib32, libx32 with lib in new path. */
+	const char *newlib = lp == libdirs ? "/lib/" : *lp;
+
+	/* Search for lib dir in path, find the trailing slash. */
+	lib = strstr(path, *lp);
+	if (lib == NULL)
+	    continue;
+	slash = lib + strlen(*lp) - 1;
+
+	/* Make sure there isn't already a machine-linux-gnu dir. */
+	len = strcspn(slash + 1, "/-");
+	if (strncmp(slash + 1 + len, "-linux-gnu/", 11) == 0) {
+	    /* Multiarch already present. */
+	    break;
+	}
+
+	/* Add machine-linux-gnu dir after /lib/ or /libexec/. */
+	len = asprintf(&newpath, "%.*s%s%s-linux-gnu%s",
+	    (int)(lib - path), path, newlib, unamebuf.machine, slash);
+	if (len == -1) {
+	    newpath = NULL;
+	    break;
+	}
+
+	/* If sb was set, use stat(2) to make sure newpath exists. */
+	if (sb == NULL || stat(newpath, sb) == 0)
+	    break;
+	free(newpath);
+	newpath = NULL;
+    }
+
+    return newpath;
+}
+#else
+char *
+sudo_stat_multiarch_v1(const char *path, struct stat *sb)
+{
+    return NULL;
+}
+#endif /* __linux__ */
diff --git a/lib/util/nanosleep.c b/lib/util/nanosleep.c
new file mode 100644
index 0000000..96082f5
--- /dev/null
+++ b/lib/util/nanosleep.c
@@ -0,0 +1,65 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2011, 2013, 2017-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_NANOSLEEP
+
+#include <sys/types.h>
+#include <sys/time.h>
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif /* HAVE_SYS_SELECT_H */
+#include <time.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+int
+sudo_nanosleep(const struct timespec *ts, struct timespec *rts)
+{
+    struct timeval timeout, endtime, now;
+    int rval;
+
+    if (ts->tv_sec == 0 && ts->tv_nsec < 1000) {
+	timeout.tv_sec = 0;
+	timeout.tv_usec = 1;
+    } else {
+	TIMESPEC_TO_TIMEVAL(&timeout, ts);
+    }
+    if (rts != NULL) {
+	if (gettimeofday(&endtime, NULL) == -1)
+	    return -1;
+	sudo_timevaladd(&endtime, &timeout, &endtime);
+    }
+    rval = select(0, NULL, NULL, NULL, &timeout);
+    if (rts != NULL && rval == -1 && errno == EINTR) {
+	if (gettimeofday(&now, NULL) == -1)
+	    return -1;
+	sudo_timevalsub(&endtime, &now, &endtime);
+	TIMEVAL_TO_TIMESPEC(&endtime, rts);
+    }
+    return rval;
+}
+#endif /* HAVE_NANOSLEEP */
diff --git a/lib/util/openat.c b/lib/util/openat.c
new file mode 100644
index 0000000..5431525
--- /dev/null
+++ b/lib/util/openat.c
@@ -0,0 +1,63 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015, 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_OPENAT
+int
+sudo_openat(int dfd, const char *path, int flags, mode_t mode)
+{
+    int fd, odfd;
+
+    if (dfd == AT_FDCWD)
+	return open(path, flags, mode);
+
+    /* Save cwd */
+    if ((odfd = open(".", O_RDONLY)) == -1)
+	return -1;
+
+    if (fchdir(dfd) == -1) {
+	close(odfd);
+	return -1;
+    }
+
+    fd = open(path, flags, mode);
+
+    /* Restore cwd */
+    if (fchdir(odfd) == -1) {
+	/* Should not happen */
+	if (fd != -1) {
+	    close(fd);
+	    fd = -1;
+	}
+    }
+    close(odfd);
+
+    return fd;
+}
+#endif /* HAVE_OPENAT */
diff --git a/lib/util/parseln.c b/lib/util/parseln.c
new file mode 100644
index 0000000..2d86bcc
--- /dev/null
+++ b/lib/util/parseln.c
@@ -0,0 +1,131 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2007, 2013-2016 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_debug.h"
+
+/*
+ * Read a line of input, honoring line continuation chars.
+ * Remove comments and strip off leading and trailing spaces.
+ * Returns the line length and updates the buf and bufsize pointers.
+ * XXX - just use a struct w/ state, including getdelim buffer?
+ *       could also make comment char and line continuation configurable
+ */
+ssize_t
+sudo_parseln_v2(char **bufp, size_t *bufsizep, unsigned int *lineno, FILE *fp, int flags)
+{
+    size_t linesize = 0, total = 0;
+    ssize_t len;
+    char *cp, *line = NULL;
+    bool continued, comment;
+    debug_decl(sudo_parseln, SUDO_DEBUG_UTIL);
+
+    do {
+	comment = false;
+	continued = false;
+	len = getdelim(&line, &linesize, '\n', fp);
+	if (len == -1)
+	    break;
+	if (lineno != NULL)
+	    (*lineno)++;
+
+	/* Remove trailing newline(s) if present. */
+	while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r'))
+	    line[--len] = '\0';
+
+	/* Remove comments or check for line continuation (but not both) */
+	if ((cp = strchr(line, '#')) != NULL) {
+	    if (cp == line || !ISSET(flags, PARSELN_COMM_BOL)) {
+		*cp = '\0';
+		len = (ssize_t)(cp - line);
+		comment = true;
+	    }
+	}
+	if (!comment && !ISSET(flags, PARSELN_CONT_IGN)) {
+	    if (len > 0 && line[len - 1] == '\\' && (len == 1 || line[len - 2] != '\\')) {
+		line[--len] = '\0';
+		continued = true;
+	    }
+	}
+
+	/* Trim leading and trailing whitespace */
+	if (!continued) {
+	    while (len > 0 && isblank((unsigned char)line[len - 1]))
+		line[--len] = '\0';
+	}
+	for (cp = line; isblank((unsigned char)*cp); cp++)
+	    len--;
+
+	if (*bufp == NULL || total + len >= *bufsizep) {
+	    void *tmp;
+	    size_t size = total + len + 1;
+
+	    if (size < 64) {
+		size = 64;
+	    } else if (size <= 0x80000000) {
+		/* Round up to next highest power of two. */
+		size--;
+		size |= size >> 1;
+		size |= size >> 2;
+		size |= size >> 4;
+		size |= size >> 8;
+		size |= size >> 16;
+		size++;
+	    }
+	    if ((tmp = realloc(*bufp, size)) == NULL) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "unable to allocate memory");
+		len = -1;
+		total = 0;
+		break;
+	    }
+	    *bufp = tmp;
+	    *bufsizep = size;
+	}
+	memcpy(*bufp + total, cp, len + 1);
+	total += len;
+    } while (continued);
+    free(line);
+    if (len == -1 && total == 0)
+	debug_return_ssize_t(-1);
+    debug_return_ssize_t(total);
+}
+
+ssize_t
+sudo_parseln_v1(char **bufp, size_t *bufsizep, unsigned int *lineno, FILE *fp)
+{
+    return sudo_parseln_v2(bufp, bufsizep, lineno, fp, 0);
+}
diff --git a/lib/util/pipe2.c b/lib/util/pipe2.c
new file mode 100644
index 0000000..43527a0
--- /dev/null
+++ b/lib/util/pipe2.c
@@ -0,0 +1,64 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2017 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_PIPE2
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+int
+sudo_pipe2(int fildes[2], int flags)
+{
+    if (pipe(fildes) != 0)
+	return -1;
+
+    if (ISSET(flags, O_CLOEXEC)) {
+	if (fcntl(fildes[0], F_SETFD, FD_CLOEXEC) == -1)
+	    goto bad;
+	if (fcntl(fildes[1], F_SETFD, FD_CLOEXEC) == -1)
+	    goto bad;
+    }
+    if (ISSET(flags, O_NONBLOCK)) {
+	int oflags = fcntl(fildes[0], F_GETFL, 0);
+	if (oflags == -1)
+	    goto bad;
+	if (fcntl(fildes[0], F_SETFL, oflags | O_NONBLOCK) == -1)
+	    goto bad;
+	oflags = fcntl(fildes[1], F_GETFL, 0);
+	if (oflags == -1)
+	    goto bad;
+	if (fcntl(fildes[1], F_SETFL, oflags | O_NONBLOCK) == -1)
+	    goto bad;
+    }
+    return 0;
+bad:
+    close(fildes[0]);
+    close(fildes[1]);
+    return -1;
+}
+
+#endif /* HAVE_PIPE2 */
diff --git a/lib/util/pread.c b/lib/util/pread.c
new file mode 100644
index 0000000..9328c54
--- /dev/null
+++ b/lib/util/pread.c
@@ -0,0 +1,48 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#if !defined(HAVE_PREAD) && !defined(HAVE_PREAD64)
+ssize_t
+sudo_pread(int fd, void *buf, size_t nbytes, off_t offset)
+{
+    ssize_t nread;
+    off_t old_offset;
+
+    old_offset = lseek(fd, (off_t)0, SEEK_CUR);
+    if (old_offset == -1 || lseek(fd, offset, SEEK_SET) == -1)
+	return -1;
+
+    nread = read(fd, buf, nbytes);
+    if (lseek(fd, old_offset, SEEK_SET) == -1)
+	return -1;
+
+    return nread;
+}
+#endif /* !HAVE_PREAD && !HAVE_PREAD64 */
diff --git a/lib/util/progname.c b/lib/util/progname.c
new file mode 100644
index 0000000..a5f93b2
--- /dev/null
+++ b/lib/util/progname.c
@@ -0,0 +1,100 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015, 2020-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+/*
+ * Declare/define __progname[] if necessary.
+ * Assumes __progname[] is present if we have getprogname(3).
+ */
+#ifndef HAVE_SETPROGNAME
+# if defined(HAVE_GETPROGNAME) || defined(HAVE___PROGNAME)
+extern const char *__progname;
+# else
+static const char *__progname = "";
+# endif /* HAVE_GETPROGNAME || HAVE___PROGNAME */
+#endif /* HAVE_SETPROGNAME */
+
+#ifndef HAVE_GETPROGNAME
+const char *
+sudo_getprogname(void)
+{
+    return __progname;
+}
+#endif
+
+#ifndef HAVE_SETPROGNAME
+void
+sudo_setprogname(const char *name)
+{
+    __progname = sudo_basename(name);
+}
+#endif
+
+void
+initprogname2(const char *name, const char * const * allowed)
+{
+    const char *progname;
+    int i;
+
+    /* Fall back on "name" if getprogname() returns an empty string. */
+    if ((progname = getprogname()) != NULL && *progname != '\0') {
+	name = progname;
+    } else {
+	/* Make sure user-specified name is relative. */
+	name = sudo_basename(name);
+    }
+
+    /* Check for libtool prefix and strip it if present. */
+    if (name[0] == 'l' && name[1] == 't' && name[2] == '-' && name[3] != '\0')
+	name += 3;
+
+    /* Check allow list if present (first element is the default). */
+    if (allowed != NULL) {
+	for (i = 0; ; i++) {
+	    if (allowed[i] == NULL) {
+		name = allowed[0];
+		break;
+	    }
+	    if (strcmp(allowed[i], name) == 0)
+		break;
+	}
+    }
+
+    /* Update internal progname if needed. */
+    if (name != progname)
+	setprogname(name);
+    return;
+}
+
+void
+initprogname(const char *name)
+{
+    initprogname2(name, NULL);
+}
diff --git a/lib/util/pw_dup.c b/lib/util/pw_dup.c
new file mode 100644
index 0000000..ccd2fbb
--- /dev/null
+++ b/lib/util/pw_dup.c
@@ -0,0 +1,99 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2000, 2002, 2012-2014
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_PW_DUP
+
+#include <stdlib.h>
+#include <string.h>
+#include <pwd.h>
+
+#include "sudo_compat.h"
+
+#define PW_SIZE(name, size)				\
+do {							\
+	if (pw->name) {					\
+		size = strlen(pw->name) + 1;		\
+		total += size;				\
+	}						\
+} while (0)
+
+#define PW_COPY(name, size)				\
+do {							\
+	if (pw->name) {					\
+		(void)memcpy(cp, pw->name, size);	\
+		newpw->name = cp;			\
+		cp += size;				\
+	}						\
+} while (0)
+
+struct passwd *
+sudo_pw_dup(const struct passwd *pw)
+{
+	size_t nsize = 0, psize = 0, gsize = 0, dsize = 0, ssize = 0, total;
+#ifdef HAVE_LOGIN_CAP_H
+	size_t csize = 0;
+#endif
+	struct passwd *newpw;
+	char *cp;
+
+	/* Allocate in one big chunk for easy freeing */
+	total = sizeof(struct passwd);
+	PW_SIZE(pw_name, nsize);
+	PW_SIZE(pw_passwd, psize);
+#ifdef HAVE_LOGIN_CAP_H
+	PW_SIZE(pw_class, csize);
+#endif
+	PW_SIZE(pw_gecos, gsize);
+	PW_SIZE(pw_dir, dsize);
+	PW_SIZE(pw_shell, ssize);
+
+	if ((cp = malloc(total)) == NULL)
+		return NULL;
+	newpw = (struct passwd *)cp;
+
+	/*
+	 * Copy in passwd contents and make strings relative to space
+	 * at the end of the buffer.
+	 */
+	(void)memcpy(newpw, pw, sizeof(struct passwd));
+	cp += sizeof(struct passwd);
+
+	PW_COPY(pw_name, nsize);
+	PW_COPY(pw_passwd, psize);
+#ifdef HAVE_LOGIN_CAP_H
+	PW_COPY(pw_class, csize);
+#endif
+	PW_COPY(pw_gecos, gsize);
+	PW_COPY(pw_dir, dsize);
+	PW_COPY(pw_shell, ssize);
+
+	return newpw;
+}
+#endif /* HAVE_PW_DUP */
diff --git a/lib/util/pwrite.c b/lib/util/pwrite.c
new file mode 100644
index 0000000..48f8cbf
--- /dev/null
+++ b/lib/util/pwrite.c
@@ -0,0 +1,48 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#if !defined(HAVE_PWRITE) && !defined(HAVE_PWRITE64)
+ssize_t
+sudo_pwrite(int fd, const void *buf, size_t nbytes, off_t offset)
+{
+    ssize_t nwritten;
+    off_t old_offset;
+
+    old_offset = lseek(fd, (off_t)0, SEEK_CUR);
+    if (old_offset == -1 || lseek(fd, offset, SEEK_SET) == -1)
+	return -1;
+
+    nwritten = write(fd, buf, nbytes);
+    if (lseek(fd, old_offset, SEEK_SET) == -1)
+	return -1;
+
+    return nwritten;
+}
+#endif /* HAVE_PWRITE && !HAVE_PWRITE64 */
diff --git a/lib/util/rcstr.c b/lib/util/rcstr.c
new file mode 100644
index 0000000..08b00bc
--- /dev/null
+++ b/lib/util/rcstr.c
@@ -0,0 +1,104 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2016-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/* Trivial reference-counted strings. */
+struct rcstr {
+    int refcnt;
+    char str[1];	/* actually bigger */
+};
+
+/*
+ * Allocate a reference-counted string and copy src to it.
+ * Returns the newly-created string with a refcnt of 1.
+ */
+char *
+sudo_rcstr_dup(const char *src)
+{
+    size_t len = strlen(src);
+    char *dst;
+    debug_decl(sudo_rcstr_dup, SUDO_DEBUG_UTIL);
+
+    dst = sudo_rcstr_alloc(len);
+    if (dst != NULL) {
+        memcpy(dst, src, len);
+        dst[len] = '\0';
+    }
+    debug_return_ptr(dst);
+}
+
+char *
+sudo_rcstr_alloc(size_t len)
+{
+    struct rcstr *rcs;
+    debug_decl(sudo_rcstr_dup, SUDO_DEBUG_UTIL);
+
+    /* Note: sizeof(struct rcstr) includes space for the NUL */
+    rcs = malloc(sizeof(struct rcstr) + len);
+    if (rcs == NULL)
+	return NULL;
+
+    rcs->refcnt = 1;
+    rcs->str[0] = '\0';
+    /* cppcheck-suppress memleak */
+    debug_return_ptr(rcs->str); // -V773
+}
+
+char *
+sudo_rcstr_addref(const char *s)
+{
+    struct rcstr *rcs;
+    debug_decl(sudo_rcstr_dup, SUDO_DEBUG_UTIL);
+
+    if (s == NULL)
+	debug_return_ptr(NULL);
+
+    rcs = __containerof((const void *)s, struct rcstr, str);
+    rcs->refcnt++;
+    debug_return_ptr(rcs->str);
+}
+
+void
+sudo_rcstr_delref(const char *s)
+{
+    struct rcstr *rcs;
+    debug_decl(sudo_rcstr_dup, SUDO_DEBUG_UTIL);
+
+    if (s != NULL) {
+	rcs = __containerof((const void *)s, struct rcstr, str);
+	if (--rcs->refcnt == 0) {
+	    rcs->str[0] = '\0';
+	    free(rcs);
+	}
+    }
+    debug_return;
+}
diff --git a/lib/util/reallocarray.c b/lib/util/reallocarray.c
new file mode 100644
index 0000000..56283e7
--- /dev/null
+++ b/lib/util/reallocarray.c
@@ -0,0 +1,57 @@
+/*	$OpenBSD: reallocarray.c,v 1.2 2014/12/08 03:45:00 bcook Exp $	*/
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_REALLOCARRAY
+
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <errno.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+
+/*
+ * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
+ * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
+ */
+#define MUL_NO_OVERFLOW	((size_t)1 << (sizeof(size_t) * 4))
+
+void *
+sudo_reallocarray(void *optr, size_t nmemb, size_t size)
+{
+	if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
+	    nmemb > 0 && SIZE_MAX / nmemb < size) {
+		errno = ENOMEM;
+		return NULL;
+	}
+	return realloc(optr, size * nmemb);
+}
+
+#endif /* HAVE_REALLOCARRAY */
diff --git a/lib/util/regex.c b/lib/util/regex.c
new file mode 100644
index 0000000..602f43b
--- /dev/null
+++ b/lib/util/regex.c
@@ -0,0 +1,194 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+#include <regex.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+#include "sudo_gettext.h"
+
+static char errbuf[1024];
+
+/*
+ * Parse a number between 0 and INT_MAX, handling escaped digits.
+ * Returns the number on success or -1 on error.
+ * Sets endp to the first non-matching character.
+ */
+static int
+parse_num(const char *str, char **endp)
+{
+    debug_decl(check_pattern, SUDO_DEBUG_UTIL);
+    const unsigned int lastval = INT_MAX / 10;
+    const unsigned int remainder = INT_MAX % 10;
+    unsigned int result = 0;
+    unsigned char ch;
+
+    while ((ch = *str++) != '\0') {
+	if (ch == '\\' && isdigit((unsigned int)str[0]))
+	    ch = *str++;
+	else if (!isdigit(ch))
+	    break;
+	ch -= '0';
+	if (result > lastval || (result == lastval && ch > remainder)) {
+	    result = -1;
+	    break;
+	}
+	result *= 10;
+	result += ch;
+    }
+    *endp = (char *)(str - 1);
+
+    debug_return_int(result);
+}
+
+/*
+ * Check pattern for invalid repetition sequences.
+ * This is implementation-specific behavior, not all regcomp(3) forbid them.
+ * Glibc allows it but uses excessive memory for repeated '+' ops.
+ */
+static int
+check_pattern(const char *pattern)
+{
+    debug_decl(check_pattern, SUDO_DEBUG_UTIL);
+    const char *cp = pattern;
+    int b1, b2 = 0;
+    char ch, *ep, prev = '\0';
+
+    while ((ch = *cp++) != '\0') {
+	switch (ch) {
+	case '\\':
+	    if (*cp != '\0') {
+		/* Skip escaped character. */
+		cp++;
+		prev = '\0';
+		continue;
+	    }
+	    break;
+	case '?':
+	case '*':
+	case '+':
+	    if (prev == '?' || prev == '*' || prev == '+' || prev == '{' ) {
+		/* Invalid repetition operator. */
+		debug_return_int(REG_BADRPT);
+	    }
+	    break;
+	case '{':
+	    /*
+	     * Try to match bound: {[0-9\\]*\?,[0-9\\]*}
+	     * GNU libc supports escaped digits and commas.
+	     */
+	    b1 = parse_num(cp, &ep);
+	    switch (ep[0]) {
+	    case '\\':
+		if (ep[1] != ',')
+		    break;
+		ep++;
+		FALLTHROUGH;
+	    case ',':
+		cp = ep + 1;
+		b2 = parse_num(cp, &ep);
+		break;
+	    }
+	    cp = ep;
+	    if (*cp == '}') {
+		if (b1 < 0 || b1 > 255 || b2 < 0 || b2 > 255) {
+		    /* Invalid bound value. */
+		    debug_return_int(REG_BADBR);
+		}
+		if (prev == '?' || prev == '*' || prev == '+' || prev == '{' ) {
+		    /* Invalid repetition operator. */
+		    debug_return_int(REG_BADRPT);
+		}
+		/* Skip past '}', prev will be set to '{' below */
+		cp++;
+		break;
+	    }
+	    prev = '\0';
+	    continue;
+	}
+	prev = ch;
+    }
+
+    debug_return_int(0);
+}
+
+/*
+ * Wrapper around regcomp() that handles a regex starting with (?i).
+ * Avoid using regex_t in the function args so we don't need to
+ * include regex.h everywhere.
+ */
+bool
+sudo_regex_compile_v1(void *v, const char *pattern, const char **errstr)
+{
+    int errcode, cflags = REG_EXTENDED|REG_NOSUB;
+    regex_t *preg;
+    char *copy = NULL;
+    const char *cp;
+    regex_t rebuf;
+    debug_decl(regex_compile, SUDO_DEBUG_UTIL);
+
+    /* Some callers just want to check the validity of the pattern. */
+    preg = v ? v : &rebuf;
+
+    /* Limit the length of regular expressions to avoid fuzzer issues. */
+    if (strlen(pattern) > 1024) {
+	*errstr = N_("regular expression too large");
+	debug_return_bool(false);
+    }
+
+    /* Check for (?i) to enable case-insensitive matching. */
+    cp = pattern[0] == '^' ? pattern + 1 : pattern;
+    if (strncmp(cp, "(?i)", 4) == 0) {
+	cflags |= REG_ICASE;
+	copy = strdup(pattern + 4);
+	if (copy == NULL) {
+	    *errstr = N_("unable to allocate memory");
+	    debug_return_bool(false);
+	}
+	if (pattern[0] == '^')
+	    copy[0] = '^';
+	pattern = copy;
+    }
+
+    errcode = check_pattern(pattern);
+    if (errcode == 0)
+	errcode = regcomp(preg, pattern, cflags);
+    if (errcode == 0) {
+	if (preg == &rebuf)
+	    regfree(&rebuf);
+    } else {
+        regerror(errcode, preg, errbuf, sizeof(errbuf));
+        *errstr = errbuf;
+    }
+    free(copy);
+
+    debug_return_bool(errcode == 0);
+}
diff --git a/lib/util/regress/closefrom/closefrom_test.c b/lib/util/regress/closefrom/closefrom_test.c
new file mode 100644
index 0000000..375bb51
--- /dev/null
+++ b/lib/util/regress/closefrom/closefrom_test.c
@@ -0,0 +1,121 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that sudo_closefrom() works as expected.
+ */
+
+int
+main(int argc, char *argv[])
+{
+    int ch, fds[2], flag, maxfd, minfd, errors = 0, ntests = 0;
+    initprogname(argc > 0 ? argv[0] : "closefrom_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    /* We use pipe() because it doesn't rely on the filesystem. */
+    ntests++;
+    if (pipe(fds) == -1) {
+	sudo_warn("%s", "pipe");
+	errors++;
+	goto done;
+    }
+    maxfd = MAX(fds[0], fds[1]);
+    minfd = MIN(fds[0], fds[1]);
+
+    /* Close any fds greater than fds[0] and fds[1]. */
+    sudo_closefrom(maxfd + 1);
+
+    /* Verify that sudo_closefrom() didn't close fds[0] or fds[1]. */
+    ntests++;
+    if (fcntl(fds[0], F_GETFL, 0) == -1) {
+	sudo_warnx("fd %d closed prematurely", fds[0]);
+	errors++;
+	goto done;
+    }
+    ntests++;
+    if (fcntl(fds[1], F_GETFL, 0) == -1) {
+	sudo_warnx("fd %d closed prematurely", fds[1]);
+	errors++;
+	goto done;
+    }
+
+    /* Close fds[0], fds[1] and above. */
+    sudo_closefrom(minfd);
+
+    /* Verify that sudo_closefrom() closed both fds. */
+    ntests++;
+    flag = fcntl(fds[0], F_GETFD, 0);
+#ifdef __APPLE__
+    /* We only set the close-on-exec flag on macOS. */
+    if (flag == 1)
+	flag = -1;
+#endif
+    if (flag != -1) {
+	sudo_warnx("fd %d still open", fds[0]);
+	errors++;
+	goto done;
+    }
+    ntests++;
+    flag = fcntl(fds[1], F_GETFD, 0);
+#ifdef __APPLE__
+    /* We only set the close-on-exec flag on macOS. */
+    if (flag == 1)
+	flag = -1;
+#endif
+    if (flag != -1) {
+	sudo_warnx("fd %d still open", fds[1]);
+	errors++;
+	goto done;
+    }
+
+done:
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.1 b/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.1
new file mode 100644
index 0000000..1a58c87
--- /dev/null
+++ b/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.1
@@ -0,0 +1,116 @@
+#
+# Default /etc/sudo.conf file
+#
+# Sudo plugins:
+#   Plugin plugin_name plugin_path plugin_options ...
+#
+# The plugin_path is relative to /usr/local/libexec/sudo unless
+#   fully qualified.
+# The plugin_name corresponds to a global symbol in the plugin
+#   that contains the plugin interface structure.
+# The plugin_options are optional.
+#
+# The sudoers plugin is used by default if no Plugin lines are present.
+#Plugin sudoers_policy sudoers.so
+#Plugin sudoers_io sudoers.so
+#Plugin sudoers_audit sudoers.so
+
+#
+# Sudo askpass:
+#   Path askpass /path/to/askpass
+#
+# An askpass helper program may be specified to provide a graphical
+# password prompt for "sudo -A" support.  Sudo does not ship with its
+# own askpass program but can use the OpenSSH askpass.
+#
+# Use the OpenSSH askpass
+#Path askpass /usr/X11R6/bin/ssh-askpass
+#
+# Use the Gnome OpenSSH askpass
+#Path askpass /usr/libexec/openssh/gnome-ssh-askpass
+
+#
+# Sudo device search path:
+#   Path devsearch /dev/path1:/dev/path2:/dev
+#
+# A colon-separated list of paths to check when searching for a user's
+# terminal device.
+#
+#Path devsearch /dev/pts:/dev/vt:/dev/term:/dev/zcons:/dev/pty:/dev
+
+#
+# Sudo noexec:
+#   Path noexec /path/to/sudo_noexec.so
+#
+# Path to a shared library containing replacements for the execv(),
+# execve() and fexecve() library functions that just return an error.
+# This is used to implement the "noexec" functionality on systems that
+# support LD_PRELOAD or its equivalent.
+#
+# The compiled-in value is usually sufficient and should only be changed
+# if you rename or move the sudo_noexec.so file.
+#
+#Path noexec /usr/local/libexec/sudo/sudo_noexec.so
+
+#
+# Sudo plugin directory:
+#   Path plugin_dir /path/to/plugins
+#
+# The default directory to use when searching for plugins that are
+# specified without a fully qualified path name.
+#
+#Path plugin_dir /usr/local/libexec/sudo
+
+#
+# Core dumps:
+#   Set disable_coredump true|false
+#
+# By default, sudo disables core dumps while it is executing (they
+# are re-enabled for the command that is run).
+# To aid in debugging sudo problems, you may wish to enable core
+# dumps by setting "disable_coredump" to false.
+#
+#Set disable_coredump false
+
+#
+# User groups:
+#   Set group_source static|dynamic|adaptive
+#
+# Sudo passes the user's group list to the policy plugin.
+# If the user is a member of the maximum number of groups (usually 16),
+# sudo will query the group database directly to be sure to include
+# the full list of groups.
+#
+# On some systems, this can be expensive so the behavior is configurable.
+# The "group_source" setting has three possible values:
+#   static   - use the user's list of groups returned by the kernel.
+#   dynamic  - query the group database to find the list of groups.
+#   adaptive - if user is in less than the maximum number of groups.
+#	       use the kernel list, else query the group database.
+#
+#Set group_source static
+
+#
+# Sudo interface probing:
+#   Set probe_interfaces true|false
+#
+# By default, sudo will probe the system's network interfaces and
+# pass the IP address of each enabled interface to the policy plugin.
+# On systems with a large number of virtual interfaces this may take
+# a noticeable amount of time.
+#
+#Set probe_interfaces false
+
+#
+# Sudo debug files:
+#   Debug program /path/to/debug_log subsystem@priority[,subsyste@priority]
+#
+# Sudo and related programs support logging debug information to a file.
+# The program is typically sudo, sudoers.so, sudoreplay or visudo.
+#
+# Subsystems vary based on the program; "all" matches all subsystems.
+# Priority may be crit, err, warn, notice, diag, info, trace or debug.
+# Multiple subsystem@priority may be specified, separated by a comma.
+#
+#Debug sudo /var/log/sudo_debug all@debug
+#Debug sudoers.so /var/log/sudoers_debug all@debug
diff --git a/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.2 b/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.2
new file mode 100644
index 0000000..05039a5
--- /dev/null
+++ b/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.2
@@ -0,0 +1,116 @@
+#
+# Default /etc/sudo.conf file
+#
+# Sudo plugins:
+#   Plugin plugin_name plugin_path plugin_options ...
+#
+# The plugin_path is relative to /usr/local/libexec/sudo unless
+#   fully qualified.
+# The plugin_name corresponds to a global symbol in the plugin
+#   that contains the plugin interface structure.
+# The plugin_options are optional.
+#
+# The sudoers plugin is used by default if no Plugin lines are present.
+Plugin sudoers_policy sudoers.so
+Plugin sudoers_io sudoers.so
+Plugin sudoers_audit sudoers.so
+
+#
+# Sudo askpass:
+#   Path askpass /path/to/askpass
+#
+# An askpass helper program may be specified to provide a graphical
+# password prompt for "sudo -A" support.  Sudo does not ship with its
+# own askpass program but can use the OpenSSH askpass.
+#
+# Use the OpenSSH askpass
+Path askpass /usr/X11R6/bin/ssh-askpass
+#
+# Use the Gnome OpenSSH askpass
+Path askpass /usr/libexec/openssh/gnome-ssh-askpass
+
+#
+# Sudo device search path:
+#   Path devsearch /dev/path1:/dev/path2:/dev
+#
+# A colon-separated list of paths to check when searching for a user's
+# terminal device.
+#
+Path devsearch /dev/pts:/dev/vt:/dev/term:/dev/zcons:/dev/pty:/dev
+
+#
+# Sudo noexec:
+#   Path noexec /path/to/sudo_noexec.so
+#
+# Path to a shared library containing replacements for the execv(),
+# execve() and fexecve() library functions that just return an error.
+# This is used to implement the "noexec" functionality on systems that
+# support LD_PRELOAD or its equivalent.
+#
+# The compiled-in value is usually sufficient and should only be changed
+# if you rename or move the sudo_noexec.so file.
+#
+Path noexec /usr/local/libexec/sudo/sudo_noexec.so
+
+#
+# Sudo plugin directory:
+#   Path plugin_dir /path/to/plugins
+#
+# The default directory to use when searching for plugins that are
+# specified without a fully qualified path name.
+#
+Path plugin_dir /usr/local/libexec/sudo
+
+#
+# Core dumps:
+#   Set disable_coredump true|false
+#
+# By default, sudo disables core dumps while it is executing (they
+# are re-enabled for the command that is run).
+# To aid in debugging sudo problems, you may wish to enable core
+# dumps by setting "disable_coredump" to false.
+#
+Set disable_coredump false
+
+#
+# User groups:
+#   Set group_source static|dynamic|adaptive
+#
+# Sudo passes the user's group list to the policy plugin.
+# If the user is a member of the maximum number of groups (usually 16),
+# sudo will query the group database directly to be sure to include
+# the full list of groups.
+#
+# On some systems, this can be expensive so the behavior is configurable.
+# The "group_source" setting has three possible values:
+#   static   - use the user's list of groups returned by the kernel.
+#   dynamic  - query the group database to find the list of groups.
+#   adaptive - if user is in less than the maximum number of groups.
+#	       use the kernel list, else query the group database.
+#
+Set group_source static
+
+#
+# Sudo interface probing:
+#   Set probe_interfaces true|false
+#
+# By default, sudo will probe the system's network interfaces and
+# pass the IP address of each enabled interface to the policy plugin.
+# On systems with a large number of virtual interfaces this may take
+# a noticeable amount of time.
+#
+Set probe_interfaces false
+
+#
+# Sudo debug files:
+#   Debug program /path/to/debug_log subsystem@priority[,subsyste@priority]
+#
+# Sudo and related programs support logging debug information to a file.
+# The program is typically sudo, sudoers.so, sudoreplay or visudo.
+#
+# Subsystems vary based on the program; "all" matches all subsystems.
+# Priority may be crit, err, warn, notice, diag, info, trace or debug.
+# Multiple subsystem@priority may be specified, separated by a comma.
+#
+Debug sudo /var/log/sudo_debug all@debug
+Debug sudoers.so /var/log/sudoers_debug all@debug
diff --git a/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.3 b/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.3
new file mode 100644
index 0000000..bcfafb2
--- /dev/null
+++ b/lib/util/regress/corpus/seed/sudo_conf/sudo.conf.3
@@ -0,0 +1,126 @@
+#
+# Default /etc/sudo.conf file
+#
+# Sudo plugins:
+#   Plugin plugin_name plugin_path plugin_options ...
+#
+# The plugin_path is relative to /usr/local/libexec/sudo unless
+#   fully qualified.
+# The plugin_name corresponds to a global symbol in the plugin
+#   that contains the plugin interface structure.
+# The plugin_options are optional.
+#
+# The sudoers plugin is used by default if no Plugin lines are present.
+Plugin sudoers_policy sudoers.so
+Plugin sudoers_io sudoers.so
+Plugin sudoers_audit sudoers.so
+
+#
+# Sudo askpass:
+#   Path askpass /path/to/askpass
+#
+# An askpass helper program may be specified to provide a graphical
+# password prompt for "sudo -A" support.  Sudo does not ship with its
+# own askpass program but can use the OpenSSH askpass.
+#
+# Use the OpenSSH askpass
+Path askpass /usr/X11R6/bin/ssh-askpass
+#
+# Use the Gnome OpenSSH askpass
+Path askpass /usr/libexec/openssh/gnome-ssh-askpass
+
+#
+# Sudo device search path:
+#   Path devsearch /dev/path1:/dev/path2:/dev
+#
+# A colon-separated list of paths to check when searching for a user's
+# terminal device.
+#
+Path devsearch /dev/pts:/dev/vt:/dev/term:/dev/zcons:/dev/pty:/dev
+
+#
+# Sudo noexec:
+#   Path noexec /path/to/sudo_noexec.so
+#
+# Path to a shared library containing replacements for the execv(),
+# execve() and fexecve() library functions that just return an error.
+# This is used to implement the "noexec" functionality on systems that
+# support LD_PRELOAD or its equivalent.
+#
+# The compiled-in value is usually sufficient and should only be changed
+# if you rename or move the sudo_noexec.so file.
+#
+Path noexec /usr/local/libexec/sudo/sudo_noexec.so
+
+#
+# Sudo plugin directory:
+#   Path plugin_dir /path/to/plugins
+#
+# The default directory to use when searching for plugins that are
+# specified without a fully qualified path name.
+#
+Path plugin_dir /usr/local/libexec/sudo
+
+#
+# Path to the sesh binary for SELinux support
+#
+Path sesh /usr/local/libexec/sudo/sesh
+
+#
+# Core dumps:
+#   Set disable_coredump true|false
+#
+# By default, sudo disables core dumps while it is executing (they
+# are re-enabled for the command that is run).
+# To aid in debugging sudo problems, you may wish to enable core
+# dumps by setting "disable_coredump" to false.
+#
+Set disable_coredump true
+
+#
+# User groups:
+#   Set group_source static|dynamic|adaptive
+#
+# Sudo passes the user's group list to the policy plugin.
+# If the user is a member of the maximum number of groups (usually 16),
+# sudo will query the group database directly to be sure to include
+# the full list of groups.
+#
+# On some systems, this can be expensive so the behavior is configurable.
+# The "group_source" setting has three possible values:
+#   static   - use the user's list of groups returned by the kernel.
+#   dynamic  - query the group database to find the list of groups.
+#   adaptive - if user is in less than the maximum number of groups.
+#	       use the kernel list, else query the group database.
+#
+Set group_source dynamic
+
+#
+# Maximum number of groups to use
+#
+Set max_groups 8
+
+#
+# Sudo interface probing:
+#   Set probe_interfaces true|false
+#
+# By default, sudo will probe the system's network interfaces and
+# pass the IP address of each enabled interface to the policy plugin.
+# On systems with a large number of virtual interfaces this may take
+# a noticeable amount of time.
+#
+Set probe_interfaces true
+
+#
+# Sudo debug files:
+#   Debug program /path/to/debug_log subsystem@priority[,subsyste@priority]
+#
+# Sudo and related programs support logging debug information to a file.
+# The program is typically sudo, sudoers.so, sudoreplay or visudo.
+#
+# Subsystems vary based on the program; "all" matches all subsystems.
+# Priority may be crit, err, warn, notice, diag, info, trace or debug.
+# Multiple subsystem@priority may be specified, separated by a comma.
+#
+Debug sudo /var/log/sudo_debug all@debug
+Debug sudoers.so /var/log/sudoers_debug all@debug
diff --git a/lib/util/regress/fnmatch/fnm_test.c b/lib/util/regress/fnmatch/fnm_test.c
new file mode 100644
index 0000000..126683b
--- /dev/null
+++ b/lib/util/regress/fnmatch/fnm_test.c
@@ -0,0 +1,92 @@
+/*	$OpenBSD: fnm_test.c,v 1.1 2008/10/01 23:04:58 millert Exp $	*/
+
+/*
+ * Public domain, 2008, Todd C. Miller <Todd.Miller@sudo.ws>
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef HAVE_FNMATCH
+# include <fnmatch.h>
+#else
+# include "compat/fnmatch.h"
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+int
+main(int argc, char *argv[])
+{
+	FILE *fp = stdin;
+	char pattern[1024], string[1024], flagstr[1024];
+	int ch, errors = 0, ntests = 0, flags, got, want;
+
+	initprogname(argc > 0 ? argv[0] : "fnm_test");
+
+	while ((ch = getopt(argc, argv, "v")) != -1) {
+	    switch (ch) {
+	    case 'v':
+		/* ignore */
+		break;
+	    default:
+		fprintf(stderr, "usage: %s [-v]\n", getprogname());
+		return EXIT_FAILURE;
+	    }
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (argc > 0) {
+		if ((fp = fopen(argv[0], "r")) == NULL) {
+			perror(argv[0]);
+			return EXIT_FAILURE;
+		}
+	}
+
+	/*
+	 * Read in test file, which is formatted thusly:
+	 *
+	 * pattern string flags expected_result
+	 *
+	 */
+	for (;;) {
+		got = fscanf(fp, "%s %s %s %d\n", pattern, string, flagstr,
+		    &want);
+		if (got == EOF)
+			break;
+		if (got == 4) {
+			flags = 0;
+			if (strcmp(flagstr, "FNM_NOESCAPE") == 0)
+				flags |= FNM_NOESCAPE;
+			else if (strcmp(flagstr, "FNM_PATHNAME") == 0)
+				flags |= FNM_PATHNAME;
+			else if (strcmp(flagstr, "FNM_PERIOD") == 0)
+				flags |= FNM_PERIOD;
+			else if (strcmp(flagstr, "FNM_LEADING_DIR") == 0)
+				flags |= FNM_LEADING_DIR;
+			else if (strcmp(flagstr, "FNM_CASEFOLD") == 0)
+				flags |= FNM_CASEFOLD;
+			got = fnmatch(pattern, string, flags);
+			if (got != want) {
+				fprintf(stderr,
+				    "fnmatch: %s %s %d: want %d, got %d\n",
+				    pattern, string, flags, want, got);
+				errors++;
+			}
+			ntests++;
+		}
+	}
+	if (ntests != 0) {
+		printf("fnmatch: %d test%s run, %d errors, %d%% success rate\n",
+		    ntests, ntests == 1 ? "" : "s", errors,
+		    (ntests - errors) * 100 / ntests);
+	}
+	return errors;
+}
diff --git a/lib/util/regress/fnmatch/fnm_test.in b/lib/util/regress/fnmatch/fnm_test.in
new file mode 100644
index 0000000..3f53f93
--- /dev/null
+++ b/lib/util/regress/fnmatch/fnm_test.in
@@ -0,0 +1,6 @@
+/bin/[[:alpha:][:alnum:]]* /bin/ls FNM_PATHNAME 0
+/bin/[[:alpha:][:alnum:]]* /bin/LS FNM_CASEFOLD 0
+/bin/[[:opper:][:alnum:]]* /bin/ls NONE 1
+[[:alpha:][:alnum:]]*.c foo1.c FNM_PERIOD 0
+[[:upper:]]* FOO NONE 0
+[![:space:]]* bar NONE 0
diff --git a/lib/util/regress/fuzz/fuzz_sudo_conf.c b/lib/util/regress/fuzz/fuzz_sudo_conf.c
new file mode 100644
index 0000000..4e70086
--- /dev/null
+++ b/lib/util/regress/fuzz/fuzz_sudo_conf.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_conf.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+static int
+fuzz_conversation(int num_msgs, const struct sudo_conv_message msgs[],
+    struct sudo_conv_reply replies[], struct sudo_conv_callback *callback)
+{
+    int n;
+
+    for (n = 0; n < num_msgs; n++) {
+	const struct sudo_conv_message *msg = &msgs[n];
+
+	switch (msg->msg_type & 0xff) {
+	    case SUDO_CONV_PROMPT_ECHO_ON:
+	    case SUDO_CONV_PROMPT_MASK:
+	    case SUDO_CONV_PROMPT_ECHO_OFF:
+		/* input not supported */
+		return -1;
+	    case SUDO_CONV_ERROR_MSG:
+	    case SUDO_CONV_INFO_MSG:
+		/* no output for fuzzers */
+		break;
+	    default:
+		return -1;
+	}
+    }
+    return 0;
+}
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    struct plugin_info_list *plugins = sudo_conf_plugins();
+    struct sudo_conf_debug_list *debug_list = sudo_conf_debugging();
+    struct sudo_conf_debug_file_list *debug_files;
+    char tempfile[] = "/tmp/sudo_conf.XXXXXX";
+    struct sudo_conf_debug *debug_spec;
+    struct sudo_debug_file *debug_file;
+    struct plugin_info *info;
+    size_t nwritten;
+    int fd;
+
+    initprogname("fuzz_sudo_conf");
+    if (getenv("SUDO_FUZZ_VERBOSE") == NULL)
+	sudo_warn_set_conversation(fuzz_conversation);
+
+    /* sudo_conf_read() uses a conf file path, not an open file. */
+    fd = mkstemp(tempfile);
+    if (fd == -1)
+	return 0;
+    nwritten = write(fd, data, size);
+    if (nwritten != size) {
+	close(fd);
+	return 0;
+    }
+    close(fd);
+
+    /* sudo_conf_read() will re-init and free old data each time it runs. */
+    sudo_conf_clear_paths();
+    sudo_conf_read(tempfile, SUDO_CONF_ALL);
+
+    /* Path settings. */
+    if (sudo_conf_askpass_path() != NULL)
+	sudo_warnx("Path askpass %s", sudo_conf_askpass_path());
+    if (sudo_conf_sesh_path() != NULL)
+	sudo_warnx("Path sesh %s", sudo_conf_sesh_path());
+    if (sudo_conf_intercept_path() != NULL)
+	sudo_warnx("Path intercept %s", sudo_conf_intercept_path());
+    if (sudo_conf_noexec_path() != NULL)
+	sudo_warnx("Path noexec %s", sudo_conf_noexec_path());
+    if (sudo_conf_plugin_dir_path() != NULL)
+	sudo_warnx("Path plugin_dir %s", sudo_conf_plugin_dir_path());
+
+    /* Other settings. */
+    sudo_warnx("Set disable_coredump %s",
+	sudo_conf_disable_coredump() ? "true" : "false");
+    sudo_warnx("Set group_source %s",
+	sudo_conf_group_source() == GROUP_SOURCE_ADAPTIVE ? "adaptive" :
+	sudo_conf_group_source() == GROUP_SOURCE_STATIC ? "static" : "dynamic");
+    sudo_warnx("Set max_groups %d", sudo_conf_max_groups());
+    sudo_warnx("Set probe_interfaces %s",
+	sudo_conf_probe_interfaces() ? "true" : "false");
+
+    /* Plugins. */
+    plugins = sudo_conf_plugins();
+    TAILQ_FOREACH(info, plugins, entries) {
+	/* We don't bother with the plugin options. */
+	sudo_warnx("Plugin %s %s", info->symbol_name, info->path);
+    }
+
+    /* Debug settings. */
+    debug_list = sudo_conf_debugging();
+    TAILQ_FOREACH(debug_spec, debug_list, entries) {
+	TAILQ_FOREACH(debug_file, &debug_spec->debug_files, entries) {
+	    sudo_warnx("Debug %s %s %s", debug_spec->progname,
+		debug_file->debug_file, debug_file->debug_flags);
+	}
+    }
+
+    debug_files = sudo_conf_debug_files(getprogname());
+    if (debug_files != NULL) {
+	TAILQ_FOREACH(debug_file, debug_files, entries) {
+	    sudo_warnx("Debug %s %s %s", getprogname(),
+		debug_file->debug_file, debug_file->debug_flags);
+	}
+    }
+
+    unlink(tempfile);
+
+    fflush(stdout);
+
+    return 0;
+}
diff --git a/lib/util/regress/fuzz/fuzz_sudo_conf.dict b/lib/util/regress/fuzz/fuzz_sudo_conf.dict
new file mode 100644
index 0000000..4b26917
--- /dev/null
+++ b/lib/util/regress/fuzz/fuzz_sudo_conf.dict
@@ -0,0 +1,18 @@
+# sudo.conf keywords
+"Debug"
+"Path"
+"Plugin"
+"Set"
+
+# Paths
+"askpass"
+"sesh"
+"noexec"
+"plugin_dir"
+"devsearch"
+
+# Variables
+"disable_coredump"
+"group_source"
+"max_groups"
+"probe_interfaces"
diff --git a/lib/util/regress/getdelim/getdelim_test.c b/lib/util/regress/getdelim/getdelim_test.c
new file mode 100644
index 0000000..2e77fd2
--- /dev/null
+++ b/lib/util/regress/getdelim/getdelim_test.c
@@ -0,0 +1,185 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <limits.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+ssize_t sudo_getdelim(char **bufp, size_t *bufsizep, int delim, FILE *fp);
+
+/*
+ * Test that sudo_getdelim() works as expected.
+ */
+
+struct getdelim_test {
+    const char *input;
+    const char *output[4];
+    int delim;
+};
+
+static char longstr[LINE_MAX * 4];
+static struct getdelim_test test_data[] = {
+    { "a\nb\nc\n", { "a\n", "b\n", "c\n", NULL }, '\n' },
+    { "a\nb\nc", { "a\n", "b\n", "c", NULL }, '\n' },
+    { "a\tb\tc\t", { "a\t", "b\t", "c\t", NULL }, '\t' },
+    { "a\tb\tc", { "a\t", "b\t", "c", NULL }, '\t' },
+    { longstr, { longstr, NULL }, '\n' },
+    { NULL, { NULL }, '\0' }
+};
+
+static int errors = 0, ntests = 0;
+
+static void
+runtests(char **buf, size_t *buflen)
+{
+    int i, j, sv[2];
+    pid_t pid;
+    FILE *fp;
+
+    /* Exercise realloc case by injecting an entry > LINE_MAX. */
+    memset(longstr, 'A', sizeof(longstr) - 2);
+    longstr[sizeof(longstr) - 2] = '\n';
+    longstr[sizeof(longstr) - 1] = '\0';
+
+    for (i = 0; test_data[i].input != NULL; i++) {
+	if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1)
+	    sudo_fatal_nodebug("socketpair");
+
+	switch ((pid = fork())) {
+	case -1:
+	    sudo_fatal_nodebug("fork");
+	case 0:
+	    /* child */
+	    close(sv[0]);
+	    if (send(sv[1], test_data[i].input, strlen(test_data[i].input), 0) == -1) {
+		sudo_warn_nodebug("send");
+		_exit(127);
+	    }
+	    _exit(EXIT_SUCCESS);
+	    break;
+	default:
+	    /* parent */
+	    break;
+	}
+
+	close(sv[1]);
+	if ((fp = fdopen(sv[0], "r")) == NULL)
+	    sudo_fatal_nodebug("fdopen");
+
+	for (j = 0; test_data[i].output[j] != NULL; j++) {
+	    ntests++;
+	    alarm(10);
+	    if (sudo_getdelim(buf, buflen, test_data[i].delim, fp) == -1)
+		sudo_fatal_nodebug("sudo_getdelim");
+	    alarm(0);
+	    if (strcmp(*buf, test_data[i].output[j]) != 0) {
+		sudo_warnx_nodebug("failed test #%d: expected %s, got %s",
+		    ntests, test_data[i].output[j], *buf);
+		errors++;
+	    }
+	}
+
+	/* test EOF */
+	ntests++;
+	alarm(30);
+	if (sudo_getdelim(buf, buflen, test_data[i].delim, fp) != -1) {
+	    sudo_warnx_nodebug("failed test #%d: expected EOF, got %s",
+		ntests, *buf);
+	    errors++;
+	} else {
+	    if (!feof(fp)) {
+		sudo_warn_nodebug("failed test #%d: expected EOF, got error",
+		    ntests);
+		errors++;
+	    }
+	}
+
+	/* test error by closing the underlying fd. */
+	clearerr(fp);
+	close(fileno(fp));
+	ntests++;
+	alarm(30);
+	if (sudo_getdelim(buf, buflen, test_data[i].delim, fp) != -1) {
+	    sudo_warnx_nodebug("failed test #%d: expected error, got %s",
+		ntests, *buf);
+	    errors++;
+	} else {
+	    /* Use feof(3), not ferror(3) so we can detect out of memory. */
+	    if (feof(fp)) {
+		sudo_warn_nodebug("failed test #%d: expected error, got EOF",
+		    ntests);
+		errors++;
+	    }
+	}
+
+	fclose(fp);
+	waitpid(pid, NULL, 0);
+	alarm(0);
+    }
+}
+
+int
+main(int argc, char *argv[])
+{
+    size_t buflen = 0;
+    char *buf = NULL;
+    int ch;
+
+    initprogname(argc > 0 ? argv[0] : "getdelim_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    runtests(&buf, &buflen);
+    free(buf);
+
+    /* XXX - redo tests with preallocated buffer filled with junk */
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/util/regress/getgrouplist/getgids.c b/lib/util/regress/getgrouplist/getgids.c
new file mode 100644
index 0000000..f366f83
--- /dev/null
+++ b/lib/util/regress/getgrouplist/getgids.c
@@ -0,0 +1,91 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <unistd.h>
+#include <pwd.h>
+#include <grp.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Implement "id -G" using sudo_getgrouplist2().
+ */
+
+int
+main(int argc, char *argv[])
+{
+    char *username = NULL;
+    GETGROUPS_T *groups = NULL;
+    struct passwd *pw;
+    int ch, i, ngroups;
+    gid_t basegid;
+
+    initprogname(argc > 0 ? argv[0] : "getgids");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v] [user]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (argc > 0)
+	username = argv[0];
+
+    if (username != NULL) {
+	if ((pw = getpwnam(username)) == NULL)
+	    sudo_fatalx("unknown user name %s", username);
+    } else {
+	if ((pw = getpwuid(getuid())) == NULL)
+	    sudo_fatalx("unknown user ID %u", (unsigned int)getuid());
+    }
+    basegid = pw->pw_gid;
+    if ((username = strdup(pw->pw_name)) == NULL)
+	sudo_fatal(NULL);
+
+    if (sudo_getgrouplist2(username, basegid, &groups, &ngroups) == -1)
+	sudo_fatal("sudo_getgroulist2");
+
+    for (i = 0; i < ngroups; i++) {
+	printf("%s%u", i ? " " : "", (unsigned int)groups[i]);
+    }
+    putchar('\n');
+    return EXIT_SUCCESS;
+}
diff --git a/lib/util/regress/getgrouplist/getgrouplist_test.c b/lib/util/regress/getgrouplist/getgrouplist_test.c
new file mode 100644
index 0000000..8429528
--- /dev/null
+++ b/lib/util/regress/getgrouplist/getgrouplist_test.c
@@ -0,0 +1,117 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <pwd.h>
+#include <grp.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that sudo_getgrouplist2() works as expected.
+ */
+
+int
+main(int argc, char *argv[])
+{
+    int errors = 0;
+#ifndef HAVE_GETGROUPLIST_2
+    GETGROUPS_T *groups = NULL;
+    struct passwd *pw;
+    struct group *grp;
+    char *username;
+    int ch, i, j, ntests = 0;
+    int ngroups;
+    gid_t basegid;
+
+    initprogname(argc > 0 ? argv[0] : "getgrouplist_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if ((pw = getpwuid(0)) == NULL)
+	sudo_fatal_nodebug("getpwuid(0)");
+    basegid = pw->pw_gid;
+    if ((username = strdup(pw->pw_name)) == NULL)
+	sudo_fatal_nodebug(NULL);
+
+    if (sudo_getgrouplist2(username, basegid, &groups, &ngroups) == -1)
+	sudo_fatal_nodebug("sudo_getgroulist2");
+
+    for (i = 0; i < ngroups; i++) {
+	ntests++;
+
+	/* Verify group ID exists. */
+	if ((grp = getgrgid(groups[i])) == NULL) {
+	    sudo_warnx_nodebug("unable to look up group ID %u",
+		(unsigned int)groups[i]);
+	    errors++;
+	    continue;
+	}
+
+	/* Check user's primary gid from the passwd file. */
+	if (grp->gr_gid == basegid)
+	    continue;
+
+	/* Verify group membership. */
+	for (j = 0; grp->gr_mem[j] != NULL; j++) {
+	    if (strcmp(username, grp->gr_mem[j]) == 0) {
+		/* match */
+		break;
+	    }
+	}
+	if (grp->gr_mem[j] == NULL) {
+	    sudo_warnx_nodebug("unable to find %s in group %s",
+		username, grp->gr_name);
+	    errors++;
+	    continue;
+	}
+    }
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    free(username);
+    free(groups);
+#endif /* HAVE_GETGROUPLIST_2 */
+    return errors;
+}
diff --git a/lib/util/regress/glob/files b/lib/util/regress/glob/files
new file mode 100644
index 0000000..c5e92aa
--- /dev/null
+++ b/lib/util/regress/glob/files
@@ -0,0 +1,47 @@
+fake/bin/[
+fake/bin/cat
+fake/bin/chgrp
+fake/bin/chio
+fake/bin/chmod
+fake/bin/cksum
+fake/bin/cp
+fake/bin/cpio
+fake/bin/csh
+fake/bin/date
+fake/bin/dd
+fake/bin/df
+fake/bin/domainname
+fake/bin/echo
+fake/bin/ed
+fake/bin/eject
+fake/bin/expr
+fake/bin/hostname
+fake/bin/kill
+fake/bin/ksh
+fake/bin/ln
+fake/bin/ls
+fake/bin/md5
+fake/bin/mkdir
+fake/bin/mt
+fake/bin/mv
+fake/bin/pax
+fake/bin/ps
+fake/bin/pwd
+fake/bin/rcp
+fake/bin/rksh
+fake/bin/rm
+fake/bin/rmail
+fake/bin/rmd160
+fake/bin/rmdir
+fake/bin/sh
+fake/bin/sha1
+fake/bin/sha256
+fake/bin/sha384
+fake/bin/sha512
+fake/bin/sleep
+fake/bin/stty
+fake/bin/sum
+fake/bin/sync
+fake/bin/systrace
+fake/bin/tar
+fake/bin/test
diff --git a/lib/util/regress/glob/globtest.c b/lib/util/regress/glob/globtest.c
new file mode 100644
index 0000000..866535a
--- /dev/null
+++ b/lib/util/regress/glob/globtest.c
@@ -0,0 +1,225 @@
+/*	$OpenBSD: globtest.c,v 1.1 2008/10/01 23:04:36 millert Exp $	*/
+
+/*
+ * Public domain, 2008, Todd C. Miller <Todd.Miller@sudo.ws>
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_GLOB
+# include <glob.h>
+#else
+# include "compat/glob.h"
+#endif
+#include <errno.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+#define MAX_RESULTS	256
+
+struct gl_entry {
+	int flags;
+	int nresults;
+	char pattern[1024];
+	char *results[MAX_RESULTS];
+};
+
+int test_glob(struct gl_entry *);
+sudo_dso_public int main(int argc, char *argv[]);
+
+int
+main(int argc, char **argv)
+{
+	FILE *fp = stdin;
+	char buf[2048], *cp, *ep;
+	int ch, errors = 0, ntests = 0, lineno;
+	struct gl_entry entry;
+	size_t len;
+
+	initprogname(argc > 0 ? argv[0] : "globtest");
+
+	while ((ch = getopt(argc, argv, "v")) != -1) {
+	    switch (ch) {
+	    case 'v':
+		/* ignore */
+		break;
+	    default:
+		fprintf(stderr, "usage: %s [-v]\n", getprogname());
+		return EXIT_FAILURE;
+	    }
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (argc > 0) {
+		if ((fp = fopen(argv[0], "r")) == NULL) {
+			perror(argv[0]);
+			return EXIT_FAILURE;
+		}
+	}
+
+	/*
+	 * Read in test file, which is formatted thusly:
+	 *
+	 * [pattern] <flags>
+	 * result1
+	 * result2
+	 * result3
+	 * ...
+	 *
+	 */
+	lineno = 0;
+	memset(&entry, 0, sizeof(entry));
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		lineno++;
+		len = strlen(buf);
+		if (len > 0) {
+			if (buf[len - 1] != '\n') {
+				fprintf(stderr,
+				    "globtest: missing newline at EOF\n");
+				return EXIT_FAILURE;
+			}
+			buf[--len] = '\0';
+		}
+		if (len == 0)
+			continue; /* blank line */
+
+		if (buf[0] == '[') {
+			/* check previous pattern */
+			if (entry.pattern[0]) {
+				errors += test_glob(&entry);
+				ntests++;
+			}
+
+			/* start new entry */
+			if ((cp = strrchr(buf + 1, ']')) == NULL) {
+				fprintf(stderr,
+				    "globtest: invalid entry on line %d\n",
+				    lineno);
+				return EXIT_FAILURE;
+			}
+			len = cp - buf - 1;
+			if (len >= sizeof(entry.pattern)) {
+				fprintf(stderr,
+				    "globtest: pattern too big on line %d\n",
+				    lineno);
+				return EXIT_FAILURE;
+			}
+			memcpy(entry.pattern, buf + 1, len);
+			entry.pattern[len] = '\0';
+
+			cp += 2;
+			if (*cp++ != '<') {
+				fprintf(stderr,
+				    "globtest: invalid entry on line %d\n",
+				    lineno);
+				return EXIT_FAILURE;
+			}
+			ep = strchr(cp, '>');
+			if (ep == NULL) {
+				fprintf(stderr,
+				    "globtest: invalid entry on line %d\n",
+				    lineno);
+				return EXIT_FAILURE;
+			}
+			*ep = '\0';
+			entry.flags = 0;
+			for ((cp = strtok_r(cp, "|", &ep)); cp != NULL; (cp = strtok_r(NULL, "|", &ep))) {
+				if (strcmp(cp, "GLOB_APPEND") == 0)
+					entry.flags |= GLOB_APPEND;
+				else if (strcmp(cp, "GLOB_DOOFFS") == 0)
+					entry.flags |= GLOB_DOOFFS;
+				else if (strcmp(cp, "GLOB_ERR") == 0)
+					entry.flags |= GLOB_ERR;
+				else if (strcmp(cp, "GLOB_MARK") == 0)
+					entry.flags |= GLOB_MARK;
+				else if (strcmp(cp, "GLOB_NOCHECK") == 0)
+					entry.flags |= GLOB_NOCHECK;
+				else if (strcmp(cp, "GLOB_NOSORT") == 0)
+					entry.flags |= GLOB_NOSORT;
+				else if (strcmp(cp, "GLOB_NOESCAPE") == 0)
+					entry.flags |= GLOB_NOESCAPE;
+				else if (strcmp(cp, "GLOB_BRACE") == 0)
+					entry.flags |= GLOB_BRACE;
+				else if (strcmp(cp, "GLOB_TILDE") == 0)
+					entry.flags |= GLOB_TILDE;
+				else if (strcmp(cp, "NONE") != 0) {
+					fprintf(stderr,
+					    "globtest: invalid flags on line %d\n",
+					    lineno);
+					return EXIT_FAILURE;
+				}
+			}
+			entry.nresults = 0;
+			continue;
+		}
+		if (!entry.pattern[0]) {
+			fprintf(stderr, "globtest: missing entry on line %d\n",
+			    lineno);
+			return EXIT_FAILURE;
+		}
+
+		if (entry.nresults + 1 > MAX_RESULTS) {
+			fprintf(stderr,
+			    "globtest: too many results for %s, max %d\n",
+			    entry.pattern, MAX_RESULTS);
+			return EXIT_FAILURE;
+		}
+		entry.results[entry.nresults++] = strdup(buf);
+	}
+	if (entry.pattern[0]) {
+		errors += test_glob(&entry); /* test last pattern */
+		ntests++;
+	}
+        if (ntests != 0) {
+		printf("glob: %d test%s run, %d errors, %d%% success rate\n",
+		    ntests, ntests == 1 ? "" : "s", errors,
+		    (ntests - errors) * 100 / ntests);
+        }
+	return errors;
+}
+
+static int
+test_glob(struct gl_entry *entry)
+{
+	glob_t gl;
+	char **ap;
+	int nmatches = 0, i = 0;
+
+	if (glob(entry->pattern, entry->flags, NULL, &gl) != 0) {
+		fprintf(stderr, "glob failed: %s: %s\n", entry->pattern,
+		    strerror(errno));
+		return 1;
+	}
+
+	for (ap = gl.gl_pathv; *ap != NULL; ap++)
+		nmatches++;
+
+	if (nmatches != entry->nresults)
+		goto mismatch;
+
+	for (i = 0; i < entry->nresults; i++) {
+		if (strcmp(gl.gl_pathv[i], entry->results[i]) != 0)
+			goto mismatch;
+		free(entry->results[i]);
+	}
+	return 0;
+ mismatch:
+	if (nmatches != entry->nresults) {
+		fprintf(stderr,
+		    "globtest: mismatch in number of results (found %d, expected %d) for pattern %s\n",
+		    nmatches, entry->nresults, entry->pattern);
+	} else {
+		fprintf(stderr, "globtest: mismatch for pattern %s, flags 0x%x "
+		    "(found \"%s\", expected \"%s\")\n", entry->pattern, entry->flags,
+		    gl.gl_pathv[i], entry->results[i]);
+		while (i < entry->nresults)
+			free(entry->results[i++]);
+	}
+	return 1;
+}
diff --git a/lib/util/regress/glob/globtest.in b/lib/util/regress/glob/globtest.in
new file mode 100644
index 0000000..20a86c1
--- /dev/null
+++ b/lib/util/regress/glob/globtest.in
@@ -0,0 +1,64 @@
+[fake/bin/[[:alpha:]]*] <NONE>
+fake/bin/cat
+fake/bin/chgrp
+fake/bin/chio
+fake/bin/chmod
+fake/bin/cksum
+fake/bin/cp
+fake/bin/cpio
+fake/bin/csh
+fake/bin/date
+fake/bin/dd
+fake/bin/df
+fake/bin/domainname
+fake/bin/echo
+fake/bin/ed
+fake/bin/eject
+fake/bin/expr
+fake/bin/hostname
+fake/bin/kill
+fake/bin/ksh
+fake/bin/ln
+fake/bin/ls
+fake/bin/md5
+fake/bin/mkdir
+fake/bin/mt
+fake/bin/mv
+fake/bin/pax
+fake/bin/ps
+fake/bin/pwd
+fake/bin/rcp
+fake/bin/rksh
+fake/bin/rm
+fake/bin/rmail
+fake/bin/rmd160
+fake/bin/rmdir
+fake/bin/sh
+fake/bin/sha1
+fake/bin/sha256
+fake/bin/sha384
+fake/bin/sha512
+fake/bin/sleep
+fake/bin/stty
+fake/bin/sum
+fake/bin/sync
+fake/bin/systrace
+fake/bin/tar
+fake/bin/test
+
+[fake/bin/rm{,dir,ail}] <GLOB_BRACE>
+fake/bin/rm
+fake/bin/rmdir
+fake/bin/rmail
+
+[fake/bin/sha[[:digit:]]] <NONE>
+fake/bin/sha1
+
+[fake/bin/sha[[:digit:]]*] <NONE>
+fake/bin/sha1
+fake/bin/sha256
+fake/bin/sha384
+fake/bin/sha512
+
+[fake/bin/ca[a-z]] <NONE>
+fake/bin/cat
diff --git a/lib/util/regress/harness.in b/lib/util/regress/harness.in
new file mode 100755
index 0000000..05fd298
--- /dev/null
+++ b/lib/util/regress/harness.in
@@ -0,0 +1,109 @@
+#!/bin/sh
+#
+# Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# Simple test harness for libsudo_util tests.
+# usage: harness [-v] test_group [test_name ...]
+#
+srcdir="@abs_srcdir@"
+builddir="@abs_builddir@"
+SHELL=@SHELL@
+verbose=0
+rval=0
+ntests=0
+errors=0
+
+umask 022
+
+if [ "$1" = "-v" ]; then
+    verbose=1
+    shift
+fi
+
+if [ $# -eq 0 ]; then
+    echo "usage: harness test_group [test_name ...]" >&2
+    exit 1
+fi
+group="$1"
+shift
+srcdir=${srcdir%"/regress"}
+builddir=${builddir%"/regress"}
+
+cd $srcdir || exit 1
+
+if [ ! -d "regress/$group" ]; then
+    echo "missing test group: regress/$group" >&2
+    exit 1
+fi
+
+mkdir -p "$builddir/regress/$group"
+if [ $# -eq 0 ]; then
+    tests=
+    for t in regress/$group/*.in; do
+	tests="$tests `basename $t .in`"
+    done
+    set -- $tests
+fi
+
+
+while [ $# -ne 0 ]; do
+    test="$1"
+    shift
+    in="regress/$group/${test}.in"
+    out="$builddir/regress/$group/${test}.out"
+    out_ok="regress/$group/${test}.out.ok"
+    err="$builddir/regress/$group/${test}.err"
+    err_ok="regress/$group/${test}.err.ok"
+
+    if [ "$group" = "sudo_conf" ]; then
+	$builddir/conf_test $in >$out 2>$err
+    else
+	$builddir/parseln_test <$in >$out 2>$err
+    fi
+
+    ntests=`expr $ntests + 1`
+    if cmp $out $out_ok >/dev/null; then
+	if [ $verbose -eq 1 ]; then
+	    echo "$group/$test: OK"
+	fi
+    else
+	errors=`expr $errors + 1`
+	echo "$group/$test: FAIL"
+	diff $out $out_ok || true
+    fi
+
+    ntests=`expr $ntests + 1`
+    if test -s $err_ok; then
+	if cmp $err $err_ok >/dev/null; then
+	    if [ $verbose -eq 1 ]; then
+		echo "$group/$test (stderr): OK"
+	    fi
+	else
+	    errors=`expr $errors + 1`
+	    echo "$group/$test (stderr): FAIL"
+	    diff $err $err_ok || true
+	fi
+    elif test -s $err; then
+	errors=`expr $errors + 1`
+	echo "$group/$test (stderr): FAIL"
+    fi
+done
+${AWK-awk} -v group=$group -v ntests=$ntests -v errors=$errors \
+    'END {printf("%s: %d tests run, %d errors, %d%% success rate\n", group, ntests, errors, (ntests - errors) * 100 / ntests)}' < /dev/null
+if test $errors -ne 0; then
+    rval=`expr $rval + $errors`
+fi
+
+exit $rval
diff --git a/lib/util/regress/hexchar/hexchar_test.c b/lib/util/regress/hexchar/hexchar_test.c
new file mode 100644
index 0000000..a51bf7f
--- /dev/null
+++ b/lib/util/regress/hexchar/hexchar_test.c
@@ -0,0 +1,81 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014-2015, 2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+struct hexchar_test {
+    char hex[3];
+    int value;
+};
+
+int
+main(int argc, char *argv[])
+{
+    struct hexchar_test *test_data;
+    int i, ntests, result, errors = 0;
+    static const char xdigs_lower[] = "0123456789abcdef";
+    static const char xdigs_upper[] = "0123456789ABCDEF";
+
+    initprogname(argc > 0 ? argv[0] : "hexchar_test");
+
+    /* Build up test data. */
+    ntests = 256 + 256 + 3;
+    test_data = calloc(sizeof(*test_data), ntests);
+    for (i = 0; i < 256; i++) {
+	/* lower case */
+	test_data[i].value = i;
+	test_data[i].hex[1] = xdigs_lower[ (i & 0x0f)];
+	test_data[i].hex[0] = xdigs_lower[((i & 0xf0) >> 4)];
+	/* upper case */
+	test_data[i + 256].value = i;
+	test_data[i + 256].hex[1] = xdigs_upper[ (i & 0x0f)];
+	test_data[i + 256].hex[0] = xdigs_upper[((i & 0xf0) >> 4)];
+    }
+    /* Also test invalid data */
+    test_data[ntests - 3].hex[0] = '\0';
+    test_data[ntests - 3].value = -1;
+    strlcpy(test_data[ntests - 2].hex, "AG", sizeof(test_data[ntests - 2].hex));
+    test_data[ntests - 2].value = -1;
+    strlcpy(test_data[ntests - 1].hex, "-1", sizeof(test_data[ntests - 1].hex));
+    test_data[ntests - 1].value = -1;
+
+    for (i = 0; i < ntests; i++) {
+	result = sudo_hexchar(test_data[i].hex);
+	if (result != test_data[i].value) {
+	    fprintf(stderr, "%s: expected %d, got %d\n", getprogname(),
+		test_data[i].value, result);
+	    errors++;
+	}
+    }
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    exit(errors);
+}
diff --git a/lib/util/regress/json/json_test.c b/lib/util/regress/json/json_test.c
new file mode 100644
index 0000000..8dc6719
--- /dev/null
+++ b/lib/util/regress/json/json_test.c
@@ -0,0 +1,235 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_json.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/* Expected JSON output */
+const char outbuf[] = "\n"
+    "    \"test1\": {\n"
+    "        \"string1\": \"test\\\\\\b\\f\\n\\r\\t string1\",\n"
+    "        \"id1\": 4294967295,\n"
+    "        \"number1\": -1,\n"
+    "        \"bool1\": true,\n"
+    "        \"bool2\": false,\n"
+    "        \"null1\": null,\n"
+    "        \"array1\": [\n"
+    "            \"string2\": \"test\\f\\u0011string2\",\n"
+    "            \"number2\": -9223372036854775808,\n"
+    "            \"number3\": 9223372036854775807\n"
+    "        ]\n"
+    "    }";
+
+/*
+ * Simple tests for sudo json functions()
+ */
+int
+main(int argc, char *argv[])
+{
+    struct json_container jsonc;
+    struct json_value value;
+    int ch, errors = 0, ntests = 0;
+
+    initprogname(argc > 0 ? argv[0] : "json_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    ntests++;
+    if (!sudo_json_init(&jsonc, 4, false, true, true)) {
+	sudo_warnx("unable to initialize json");
+	errors++;
+	goto done;
+    }
+
+    /* Open main JSON object. */
+    ntests++;
+    if (!sudo_json_open_object(&jsonc, "test1")) {
+	sudo_warnx("unable to open json object");
+	errors++;
+	goto done;
+    }
+
+    /* Verify invalid value is detected. */
+    value.type = -1;
+    value.u.string = NULL;
+    ntests++;
+    if (sudo_json_add_value(&jsonc, "bogus1", &value)) {
+	/* should have failed, not a fatal error */
+	sudo_warnx("should not be able to add bogus type value");
+	errors++;
+    }
+
+    /* Verify that adding an array is not allowed. */
+    value.type = JSON_ARRAY;
+    value.u.string = NULL;
+    ntests++;
+    if (sudo_json_add_value(&jsonc, "bogus2", &value)) {
+	/* should have failed, not a fatal error */
+	sudo_warnx("should not be able to add array type value");
+	errors++;
+    }
+
+    /* Verify that adding an object is not allowed. */
+    value.type = JSON_OBJECT;
+    value.u.string = NULL;
+    ntests++;
+    if (sudo_json_add_value(&jsonc, "bogus3", &value)) {
+	/* should have failed, not a fatal error */
+	sudo_warnx("should not be able to add object type value");
+	errors++;
+    }
+
+    value.type = JSON_STRING;
+    value.u.string = "test\\\b\f\n\r\t string1";
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "string1", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add string value (string1)");
+	errors++;
+    }
+
+    value.type = JSON_ID;
+    value.u.id = 0xffffffff;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "id1", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add ID value (0xffffffff)");
+	errors++;
+    }
+
+    value.type = JSON_NUMBER;
+    value.u.number = -1;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "number1", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add number value (-1)");
+	errors++;
+    }
+
+    value.type = JSON_BOOL;
+    value.u.boolean = true;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "bool1", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add bool value (true)");
+	errors++;
+    }
+    value.u.boolean = false;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "bool2", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add bool value (false)");
+	errors++;
+    }
+
+    value.type = JSON_NULL;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "null1", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add null value");
+	errors++;
+    }
+
+    /* Open JSON array. */
+    ntests++;
+    if (!sudo_json_open_array(&jsonc, "array1")) {
+	sudo_warnx("unable to open json array");
+	errors++;
+	goto done;
+    }
+
+    value.type = JSON_STRING;
+    value.u.string = "test\x0c\x11string2";
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "string2", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add string value (string2)");
+	errors++;
+    }
+
+    value.type = JSON_NUMBER;
+    value.u.number = LLONG_MIN;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "number2", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add number value (LLONG_MIN)");
+	errors++;
+    }
+    value.u.number = LLONG_MAX;
+    ntests++;
+    if (!sudo_json_add_value(&jsonc, "number3", &value)) {
+	/* not a fatal error */
+	sudo_warnx("unable to add number value (LLONG_MAX)");
+	errors++;
+    }
+
+    /* Close JSON array. */
+    if (!sudo_json_close_array(&jsonc)) {
+	sudo_warnx("unable to close json array");
+	errors++;
+	goto done;
+    }
+
+    /* Close main JSON object. */
+    if (!sudo_json_close_object(&jsonc)) {
+	sudo_warnx("unable to close json object");
+	errors++;
+	goto done;
+    }
+
+    if (strcmp(outbuf, jsonc.buf) != 0) {
+	fprintf(stderr, "Expected:\n%s\n", outbuf);
+	fprintf(stderr, "Received:\n%s\n", jsonc.buf);
+    }
+
+done:
+    sudo_json_free(&jsonc);
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/util/regress/mktemp/mktemp_test.c b/lib/util/regress/mktemp/mktemp_test.c
new file mode 100644
index 0000000..134f89e
--- /dev/null
+++ b/lib/util/regress/mktemp/mktemp_test.c
@@ -0,0 +1,206 @@
+/*
+ * Copyright (c) 2010  Philip Guenther <guenther@openbsd.org>
+ *
+ * Public domain.
+ *
+ * Verify that mkdtemp() and mkstemps() doesn't overrun or underrun
+ * the template buffer and that it can generate names that don't
+ * contain any X's
+ */
+
+#include <config.h>
+
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+#ifndef MAP_ANON
+# if defined(MAP_ANONYMOUS)
+#  define MAP_ANON MAP_ANONYMOUS
+# endif
+#endif
+
+#ifndef MAP_FAILED
+# define MAP_FAILED ((void *) -1)
+#endif
+
+#define MAX_TEMPLATE_LEN	10
+#define MAX_TRIES		100
+#define MIN_Xs			6
+
+#define SUFFIX	".suff"
+#define SLEN	(sizeof SUFFIX - 1)
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * verify that a path generated by mkdtemp() or mkstemp() looks like a
+ * reasonable expansion of the template and matches the fd.  Returns true
+ * if all the X's were replaced with non-X's
+ */
+static int
+check(int fd, char const *kind, char const *path, char const *prefix,
+    size_t plen, char const *suffix, size_t slen, int tlen)
+{
+	struct stat sb, fsb;
+	char const *p;
+
+	if (tlen < MIN_Xs) {
+		if (fd != -1)
+			sudo_fatalx("%s(%s) succeed with too few Xs", kind, path);
+		if (errno != EINVAL)
+			sudo_fatal("%s(%s) failed with wrong errno: %d", kind, path, errno);
+		return 1;
+	}
+	if (fd == -1)
+		sudo_fatal("%s(%s)", kind, path);
+	if (stat(path, &sb))
+		sudo_fatal("%s: stat(%s)", kind, path);
+	if (fd >= 0) {
+		if (fstat(fd, &fsb))
+			sudo_fatal("%s: fstat(%d==%s)", kind, fd, path);
+		if (sb.st_dev != fsb.st_dev || sb.st_ino != fsb.st_ino)
+			sudo_fatalx("%s: stat mismatch", kind);
+	}
+	if (memcmp(path, prefix, plen) != 0)
+		sudo_fatalx("%s: prefix changed!  %s vs %s", kind, prefix, path);
+	if (memcmp(path + plen + tlen, suffix, slen + 1) != 0)
+		sudo_fatalx("%s: suffix changed!  %s vs %s", kind, suffix, path);
+	for (p = path + plen; p < path + plen + tlen; p++)
+		if (*p == '\0')
+			sudo_fatalx("%s: unexpected truncation", kind);
+		else if (*p == 'X')
+			return 0;
+	return 1;
+}
+
+static void
+try_mkdtemp(char *p, char const *prefix, int len)
+{
+	size_t plen = strlen(prefix);
+	int fd, tries, ok;
+
+	for (tries = 0; tries < MAX_TRIES; tries++) {
+		memcpy(p, prefix, plen);
+		memset(p + plen, 'X', len);
+		p[plen + len] = '\0';
+		fd = mkdtemp(p) ? -2 : -1;
+		ok = check(fd, "mkdtemp", p, prefix, plen, "", 0, len);
+		rmdir(p);
+		if (ok)
+			return;
+	}
+	sudo_fatalx("mkdtemp: exceeded MAX_TRIES");
+}
+
+static void
+try_mkstemps(char *p, char const *prefix, int len, char const *suffix)
+{
+	size_t plen = strlen(prefix);
+	size_t slen = strlen(suffix);
+	int tries, fd, ok;
+
+	for (tries = 0; tries < MAX_TRIES; tries++) {
+		memcpy(p, prefix, plen);
+		memset(p + plen, 'X', len);
+		memcpy(p + plen + len, suffix, slen + 1);
+		fd = mkstemps(p, slen);
+		ok = check(fd, "mkstemp", p, prefix, plen, suffix, slen, len);
+		close(fd);
+		unlink(p);
+		if (ok)
+			return;
+	}
+	sudo_fatalx("mkstemps: exceeded MAX_TRIES");
+}
+
+int
+main(int argc, char *argv[])
+{
+	char cwd[PATH_MAX + 1];
+	char *p;
+	size_t clen;
+	long pg;
+	int ch, i;
+
+	initprogname(argc > 0 ? argv[0] : "mktemp_test");
+
+	while ((ch = getopt(argc, argv, "v")) != -1) {
+	    switch (ch) {
+	    case 'v':
+		/* ignore */
+		break;
+	    default:
+		fprintf(stderr, "usage: %s [-v]\n", getprogname());
+		return EXIT_FAILURE;
+	    }
+	}
+	argc -= optind;
+	argv += optind;
+
+	pg = sysconf(_SC_PAGESIZE);
+	if (getcwd(cwd, sizeof cwd - 1) == NULL)
+		sudo_fatal("getcwd");
+	clen = strlen(cwd);
+	cwd[clen++] = '/';
+	cwd[clen] = '\0';
+#ifdef MAP_ANON
+	p = mmap(NULL, pg * 3, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+#else
+	i = open("/dev/zero", O_RDWR);
+	if (i == -1)
+		sudo_fatal("/dev/zero");
+	p = mmap(NULL, pg * 3, PROT_READ | PROT_WRITE, MAP_PRIVATE, i, 0);
+#endif
+	if (p == MAP_FAILED)
+		sudo_fatal("mmap");
+	if (mprotect(p, pg, PROT_NONE) || mprotect(p + pg * 2, pg, PROT_NONE))
+		sudo_fatal("mprotect");
+	p += pg;
+
+	i = MAX_TEMPLATE_LEN + 1;
+	while (i-- > 0) {
+		/* try first at the start of a page, no prefix */
+		try_mkdtemp(p, "", i);
+		/* now at the end of the page, no prefix */
+		try_mkdtemp(p + pg - i - 1, "", i);
+		/* start of the page, prefixed with the cwd */
+		try_mkdtemp(p, cwd, i);
+		/* how about at the end of the page, prefixed with cwd? */
+		try_mkdtemp(p + pg - clen - i - 1, cwd, i);
+
+		/* again, with mkstemps() and an empty suffix */
+		/* try first at the start of a page, no prefix */
+		try_mkstemps(p, "", i, "");
+		/* now at the end of the page, no prefix */
+		try_mkstemps(p + pg - i - 1, "", i, "");
+		/* start of the page, prefixed with the cwd */
+		try_mkstemps(p, cwd, i, "");
+		/* how about at the end of the page, prefixed with cwd? */
+		try_mkstemps(p + pg - clen - i - 1, cwd, i, "");
+
+		/* mkstemps() and a non-empty suffix */
+		/* try first at the start of a page, no prefix */
+		try_mkstemps(p, "", i, SUFFIX);
+		/* now at the end of the page, no prefix */
+		try_mkstemps(p + pg - i - SLEN - 1, "", i, SUFFIX);
+		/* start of the page, prefixed with the cwd */
+		try_mkstemps(p, cwd, i, SUFFIX);
+		/* how about at the end of the page, prefixed with cwd? */
+		try_mkstemps(p + pg - clen - i - SLEN - 1, cwd, i, SUFFIX);
+	}
+
+	return 0;
+}
diff --git a/lib/util/regress/multiarch/multiarch_test.c b/lib/util/regress/multiarch/multiarch_test.c
new file mode 100644
index 0000000..1c60aff
--- /dev/null
+++ b/lib/util/regress/multiarch/multiarch_test.c
@@ -0,0 +1,184 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+#ifdef __linux__
+# include <sys/utsname.h>
+
+# if defined(__ILP32__)
+#  define ARCH_LIB	"libx32"
+# elif defined(__LP64__)
+#  define ARCH_LIB	"lib64"
+# else
+#  define ARCH_LIB	"lib32"
+# endif
+
+struct multiarch_test {
+    const char *inpath;
+    char *outpath;
+};
+
+static struct multiarch_test *
+make_test_data(void)
+{
+    struct multiarch_test *test_data;
+    struct utsname unamebuf;
+    int i;
+
+    if (uname(&unamebuf) == -1)
+        return NULL;
+
+    test_data = calloc(7, sizeof(*test_data));
+    if (test_data == NULL)
+	return NULL;
+
+    test_data[0].inpath = "/usr/" ARCH_LIB "/libfoo.so";
+    i = asprintf(&test_data[0].outpath, "/usr/lib/%s-linux-gnu/libfoo.so",
+	unamebuf.machine);
+    if (i == -1) {
+	test_data[0].outpath = NULL;
+	goto bad;
+    }
+
+    test_data[1].inpath = "/usr/lib/something.so";
+    i = asprintf(&test_data[1].outpath, "/usr/lib/%s-linux-gnu/something.so",
+	unamebuf.machine);
+    if (i == -1) {
+	test_data[1].outpath = NULL;
+	goto bad;
+    }
+
+    test_data[2].inpath = "/usr/libexec/libbar.so";
+    i = asprintf(&test_data[2].outpath, "/usr/libexec/%s-linux-gnu/libbar.so",
+	unamebuf.machine);
+    if (i == -1) {
+	test_data[2].outpath = NULL;
+	goto bad;
+    }
+
+    test_data[3].inpath = "/usr/local/lib/sudo/libsudo_util.so";
+    i = asprintf(&test_data[3].outpath, "/usr/local/lib/%s-linux-gnu/sudo/libsudo_util.so",
+	unamebuf.machine);
+    if (i == -1) {
+	test_data[3].outpath = NULL;
+	goto bad;
+    }
+
+    test_data[4].inpath = "/opt/sudo/lib/sudoers.so";
+    i = asprintf(&test_data[4].outpath, "/opt/sudo/lib/%s-linux-gnu/sudoers.so",
+	unamebuf.machine);
+    if (i == -1) {
+	test_data[4].outpath = NULL;
+	goto bad;
+    }
+
+    i = asprintf(&test_data[5].outpath, "/usr/lib/%s-linux-gnu/something.so",
+	unamebuf.machine);
+    if (i == -1) {
+	test_data[5].outpath = NULL;
+	goto bad;
+    }
+    test_data[5].inpath = test_data[5].outpath;
+    test_data[5].outpath = NULL;
+
+    return test_data;
+bad:
+    for (i = 0; test_data[i].outpath != NULL; i++)
+	free(test_data[i].outpath);
+    free(test_data);
+    return NULL;
+}
+#endif /* __linux__ */
+
+int
+main(int argc, char *argv[])
+{
+    int ch, errors = 0;
+#ifdef __linux__
+    int ntests = 0;
+    struct multiarch_test *test_data;
+#endif
+
+    initprogname(argc > 0 ? argv[0] : "multiarch_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+#ifdef __linux__
+    test_data = make_test_data();
+    if (test_data == NULL) {
+	sudo_warnx("%s", "failed to generate test data");
+	return EXIT_FAILURE;
+    }
+
+    for (ch = 0; test_data[ch].inpath != NULL; ch++) {
+	char *outpath = sudo_stat_multiarch(test_data[ch].inpath, NULL);
+	ntests++;
+	if (outpath == NULL) {
+	    if (test_data[ch].outpath != NULL) {
+		sudo_warnx("%s: sudo_stat_multiarch failed",
+		    test_data[ch].inpath);
+		errors++;
+	    }
+	} else if (strcmp(outpath, test_data[ch].outpath) != 0) {
+	    sudo_warnx("%s: expected %s got %s", test_data[ch].inpath,
+		test_data[ch].outpath, outpath);
+	    errors++;
+	}
+	/* For test_data[5], inpath is allocated and outpath is NULL. */
+	if (test_data[ch].outpath != NULL)
+	    free(test_data[ch].outpath);
+	else
+	    free((char *)test_data[ch].inpath);
+	free(outpath);
+    }
+    free(test_data);
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+#endif /* __linux__ */
+    return errors;
+}
diff --git a/lib/util/regress/open_parent_dir/open_parent_dir_test.c b/lib/util/regress/open_parent_dir/open_parent_dir_test.c
new file mode 100644
index 0000000..95f1a09
--- /dev/null
+++ b/lib/util/regress/open_parent_dir/open_parent_dir_test.c
@@ -0,0 +1,166 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+static int errors = 0, ntests = 0;
+
+static int
+run_test(const char *tdir, const char *path, uid_t uid, gid_t gid)
+{
+    char *cp, fullpath[PATH_MAX];
+    struct stat sb1, sb2;
+    int dfd, len;
+    int ret = -1;
+
+    /* Test creating full path. */
+    len = snprintf(fullpath, sizeof(fullpath), "%s/%s", tdir, path);
+    if (len < 0 || len >= ssizeof(fullpath)) {
+	errno = ENAMETOOLONG;
+	sudo_fatal("%s/%s", tdir, path);
+    }
+    ntests++;
+    dfd = sudo_open_parent_dir(fullpath, uid, gid, 0700, false);
+    if (dfd == -1) {
+	errors++;
+	goto done;
+    }
+
+    /* Verify that we only created the parent dir, not full path. */
+    ntests++;
+    if (stat(fullpath, &sb1) == 0) {
+	sudo_warnx("created full path \"%s\", not just parent dir",
+	    fullpath);
+	errors++;
+	goto done;
+    }
+
+    /* Verify that dfd refers to the parent dir. */
+    ntests++;
+    cp = strrchr(fullpath, '/');
+    *cp = '\0';
+    if (stat(fullpath, &sb1) == -1) {
+	sudo_warn("%s", fullpath);
+	errors++;
+	goto done;
+    }
+    if (fstat(dfd, &sb2) == -1) {
+	sudo_warn("%s", fullpath);
+	errors++;
+	goto done;
+    }
+    if (sb1.st_dev != sb2.st_dev || sb1.st_ino != sb2.st_ino) {
+	sudo_warn("%s: sudo_open_parent_dir fd mismatch", fullpath);
+	errors++;
+	goto done;
+    }
+
+done:
+    if (dfd != -1)
+	close(dfd);
+    return ret;
+}
+
+int
+main(int argc, char *argv[])
+{
+    char tdir[] = "open_parent_dir.XXXXXXXX";
+    int ch, dfd, fd, len;
+    char cmd[1024];
+    uid_t uid;
+    gid_t gid;
+
+    initprogname(argc > 0 ? argv[0] : "open_parent_dir_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    uid = geteuid();
+    gid = getegid();
+
+    /* All tests relative to tdir. */
+    if (mkdtemp(tdir) == NULL)
+	sudo_fatal("%s", tdir);
+
+    /* Test creating new path. */
+    dfd = run_test(tdir, "level1/level2/level3", uid, gid);
+
+    /* Verify we can create a new file in the new parent dir. */
+    if (dfd != -1) {
+	ntests++;
+	fd = openat(dfd, "testfile", O_WRONLY|O_CREAT|O_EXCL, 0600);
+	if (fd == -1) {
+	    errors++;
+	} else {
+	    close(fd);
+	}
+	close(dfd);
+	dfd = -1;
+    }
+
+    /* Test exiting path when final component exists. */
+    dfd = run_test(tdir, "level1/level2/testfile", uid, gid);
+    if (dfd != -1) {
+	unlinkat(dfd, "testfile", 0);
+	close(dfd);
+    }
+
+    /* Test exiting path when final component doesn't exist. */
+    dfd = run_test(tdir, "level1/level2/testfile", uid, gid);
+    if (dfd != -1)
+	close(dfd);
+
+    /* Cleanup */
+    len = snprintf(cmd, sizeof(cmd), "rm -rf \"%s\"", tdir);
+    if (len < 0 || len >= ssizeof(cmd)) {
+	errno = ENAMETOOLONG;
+	sudo_fatalx("rm -rf %s", tdir);
+    }
+    ignore_result(system(cmd));
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/util/regress/parse_gids/parse_gids_test.c b/lib/util/regress/parse_gids/parse_gids_test.c
new file mode 100644
index 0000000..241e81b
--- /dev/null
+++ b/lib/util/regress/parse_gids/parse_gids_test.c
@@ -0,0 +1,123 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that sudo_parse_gids() works as expected.
+ */
+
+struct parse_gids_test {
+    const char *gids;
+    gid_t *baseptr;
+    gid_t basegid;
+    int ngids;
+    const GETGROUPS_T *gidlist;
+};
+
+static const GETGROUPS_T test1_out[] = { 0, 1, 2, 3, 4 };
+static const GETGROUPS_T test2_out[] = { 1, 2, 3, 4 };
+static const GETGROUPS_T test3_out[] = { 0, 1, (gid_t)-2, 3, 4 };
+
+/* XXX - test syntax errors too */
+static struct parse_gids_test test_data[] = {
+    { "1,2,3,4", &test_data[0].basegid, 0, 5, test1_out },
+    { "1,2,3,4", NULL, 0, 4, test2_out },
+    { "1,-2,3,4", &test_data[2].basegid, 0, 5, test3_out },
+    { NULL, false, 0, 0, NULL }
+};
+
+static void
+dump_gids(const char *prefix, int ngids, const GETGROUPS_T *gidlist)
+{
+    int i;
+
+    fprintf(stderr, "%s: %s: ", getprogname(), prefix);
+    for (i = 0; i < ngids; i++) {
+	fprintf(stderr, "%s%d", i ? ", " : "", (int)gidlist[i]);
+    }
+    fputc('\n', stderr);
+}
+
+int
+main(int argc, char *argv[])
+{
+    GETGROUPS_T *gidlist = NULL;
+    int i, j, errors = 0, ntests = 0;
+    int ch, ngids;
+
+    initprogname(argc > 0 ? argv[0] : "parse_gids_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (i = 0; test_data[i].gids != NULL; i++) {
+	free(gidlist);
+	gidlist = NULL;
+	ngids = sudo_parse_gids(test_data[i].gids, test_data[i].baseptr, &gidlist);
+	if (ngids == -1)
+	    sudo_fatal_nodebug("sudo_parse_gids");
+	ntests++;
+	if (ngids != test_data[i].ngids) {
+	    sudo_warnx_nodebug("test #%d: expected %d gids, got %d",
+		ntests, test_data[i].ngids, ngids);
+	    dump_gids("expected", test_data[i].ngids, test_data[i].gidlist);
+	    dump_gids("received", ngids, gidlist);
+	    errors++;
+	    continue;
+	}
+	ntests++;
+	for (j = 0; j < ngids; j++) {
+	    if (test_data[i].gidlist[j] != gidlist[j]) {
+		sudo_warnx_nodebug("test #%d: gid mismatch", ntests);
+		dump_gids("expected", test_data[i].ngids, test_data[i].gidlist);
+		dump_gids("received", ngids, gidlist);
+		errors++;
+		break;
+	    }
+	}
+    }
+    free(gidlist);
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/util/regress/progname/progname_test.c b/lib/util/regress/progname/progname_test.c
new file mode 100644
index 0000000..0a88faf
--- /dev/null
+++ b/lib/util/regress/progname/progname_test.c
@@ -0,0 +1,67 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that getprogname() returns the expected result.
+ * On some systems (AIX), we may have issues with symbolic links.
+ */
+
+int
+main(int argc, char *argv[])
+{
+    const char *progbase = "progname_test";
+    int ch;
+
+    if (argc > 0)
+	progbase = sudo_basename(argv[0]);
+    initprogname(progbase);
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", progbase);
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    /* Make sure getprogname() matches basename of argv[0]. */
+    if (strcmp(getprogname(), progbase) != 0) {
+	printf("%s: FAIL: incorrect program name \"%s\"\n",
+	    progbase, getprogname());
+	return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}
diff --git a/lib/util/regress/regex/regex_test.c b/lib/util/regress/regex/regex_test.c
new file mode 100644
index 0000000..ed6986e
--- /dev/null
+++ b/lib/util/regress/regex/regex_test.c
@@ -0,0 +1,126 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+struct regex_test {
+    const char *pattern;
+    bool result;
+};
+
+static struct regex_test test_data[] = {
+    { "ab++", false },
+    { "ab\\++", true },
+    { "ab+\\+", true },
+    { "ab**", false },
+    { "ab\\**", true },
+    { "ab*\\*", true },
+    { "ab??", false },
+    { "ab\\??", true },
+    { "ab?\\?", true },
+    { "ab{1}{1}", false },
+    { "ab{1}{1,1}", false },
+    { "ab{1}{,1}", false },
+    { "ab{1}{1,}", false },
+    { "ab{1}\\{1}", true },
+    { "ab{1}\\{1,1}", true },
+    { "ab{1}\\{,1}", true },
+    { "ab{1}\\{1,}", true },
+    { "ab+*", false },
+    { "ab\\+*", true },
+    { "ab+\\*", true },
+    { "ab*+", false },
+    { "ab\\*+", true },
+    { "ab*\\+", true },
+    { "ab?*", false },
+    { "ab\\?*", true },
+    { "ab?\\*", true },
+    { "ab{1}*", false },
+    { "ab\\{1}*", true },
+    { "ab{1}\\*", true },
+    { "ab{256}", false },
+    { "ab{,256}", false },
+    { "ab{256,}", false },
+    { "ab{1,256}", false },
+    { "ab{1,\\256}", false },
+    { "ab{1,2\\56}", false },
+    { "ab{256,1}", false },
+    { "ab{\\256,1}", false },
+    { "ab{2\\56,1}", false },
+    { NULL }
+};
+
+int
+main(int argc, char *argv[])
+{
+    struct regex_test *td;
+    const char *errstr;
+    int errors = 0, ntests = 0;
+    bool result;
+    int ch;
+
+    initprogname(argc > 0 ? argv[0] : "regex_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (td = test_data; td->pattern != NULL; td++) {
+	ntests++;
+	result = sudo_regex_compile(NULL, td->pattern, &errstr);
+	if (result != td->result) {
+	    sudo_warnx("%s: expected %d, got %d", td->pattern, (int)td->result,
+		(int)result);
+	    errors++;
+	}
+    }
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/util/regress/strsig/strsig_test.c b/lib/util/regress/strsig/strsig_test.c
new file mode 100644
index 0000000..30aaa2d
--- /dev/null
+++ b/lib/util/regress/strsig/strsig_test.c
@@ -0,0 +1,319 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Note: we do not test SIGUNUSED as it may not appear in sys_sigabbrev[]
+ *       on Linux.  FreeBSD is missing SIGLWP (aka SIGTHR) in sys_signame[].
+ */
+static struct signal_data {
+    int rval;
+    int signo;
+    const char *sigstr;
+    const char *altstr;
+} signal_data[] = {
+#ifdef SIGHUP
+    { 0, SIGHUP, "HUP", NULL },
+#endif
+#ifdef SIGINT
+    { 0, SIGINT, "INT", NULL },
+#endif
+#ifdef SIGQUIT
+    { 0, SIGQUIT, "QUIT", NULL },
+#endif
+#ifdef SIGILL
+    { 0, SIGILL, "ILL", NULL },
+#endif
+#ifdef SIGTRAP
+    { 0, SIGTRAP, "TRAP", NULL },
+#endif
+#ifdef SIGABRT
+    { 0, SIGABRT, "ABRT", "IOT" },
+#endif
+#ifdef SIGIOT
+    { 0, SIGIOT, "IOT", "ABRT" },
+#endif
+#ifdef SIGEMT
+    { 0, SIGEMT, "EMT", NULL },
+#endif
+#ifdef SIGFPE
+    { 0, SIGFPE, "FPE", NULL },
+#endif
+#ifdef SIGKILL
+    { 0, SIGKILL, "KILL", NULL },
+#endif
+#ifdef SIGBUS
+    { 0, SIGBUS, "BUS", NULL },
+#endif
+#ifdef SIGSEGV
+    { 0, SIGSEGV, "SEGV", NULL },
+#endif
+#ifdef SIGSYS
+    { 0, SIGSYS, "SYS", NULL },
+#endif
+#ifdef SIGPIPE
+    { 0, SIGPIPE, "PIPE", NULL },
+#endif
+#ifdef SIGALRM
+    { 0, SIGALRM, "ALRM", NULL },
+#endif
+#ifdef SIGTERM
+    { 0, SIGTERM, "TERM", NULL },
+#endif
+#ifdef SIGSTKFLT
+    { 0, SIGSTKFLT, "STKFLT", NULL },
+#endif
+#ifdef SIGIO
+    { 0, SIGIO, "IO", "POLL"},
+#endif
+#ifdef SIGXCPU
+    { 0, SIGXCPU, "XCPU", NULL },
+#endif
+#ifdef SIGXFSZ
+    { 0, SIGXFSZ, "XFSZ", NULL },
+#endif
+#ifdef SIGVTALRM
+    { 0, SIGVTALRM, "VTALRM", NULL },
+#endif
+#ifdef SIGPROF
+    { 0, SIGPROF, "PROF", NULL },
+#endif
+#ifdef SIGWINCH
+    { 0, SIGWINCH, "WINCH", NULL },
+#endif
+#ifdef SIGLOST
+    { 0, SIGLOST, "LOST", NULL },
+#endif
+#ifdef SIGUSR1
+    { 0, SIGUSR1, "USR1", NULL },
+#endif
+#ifdef SIGUSR2
+    { 0, SIGUSR2, "USR2", NULL },
+#endif
+#ifdef SIGPWR
+    { 0, SIGPWR, "PWR", NULL },
+#endif
+#ifdef SIGPOLL
+    { 0, SIGPOLL, "POLL", "IO" },
+#endif
+#ifdef SIGSTOP
+    { 0, SIGSTOP, "STOP", NULL },
+#endif
+#ifdef SIGTSTP
+    { 0, SIGTSTP, "TSTP", NULL },
+#endif
+#ifdef SIGCONT
+    { 0, SIGCONT, "CONT", NULL },
+#endif
+#ifdef SIGCHLD
+    { 0, SIGCHLD, "CHLD", "CLD" },
+#endif
+#ifdef SIGCLD
+    { 0, SIGCLD, "CLD", "CHLD" },
+#endif
+#ifdef SIGTTIN
+    { 0, SIGTTIN, "TTIN", NULL },
+#endif
+#ifdef SIGTTOU
+    { 0, SIGTTOU, "TTOU", NULL },
+#endif
+#ifdef SIGINFO
+    { 0, SIGINFO, "INFO", NULL },
+#endif
+#ifdef SIGURG
+    { 0, SIGURG, "URG", NULL },
+#endif
+#ifdef SIGWAITING
+    { 0, SIGWAITING, "WAITING", NULL },
+#endif
+#if defined(SIGLWP) && !defined(__FreeBSD__)
+    { 0, SIGLWP, "LWP", NULL },
+#endif
+#ifdef SIGFREEZE
+    { 0, SIGFREEZE, "FREEZE", NULL },
+#endif
+#ifdef SIGTHAW
+    { 0, SIGTHAW, "THAW", NULL },
+#endif
+#ifdef SIGCANCEL
+    { 0, SIGCANCEL, "CANCEL", NULL },
+#endif
+#if defined(SIGRTMIN) && defined(SIGRTMAX)
+    { 0, -1, "RTMIN",   NULL },
+    { 0, -1, "RTMIN+1", NULL },
+    { 0, -1, "RTMIN+2", NULL },
+    { 0, -1, "RTMIN+3", NULL },
+    { 0, -1, "RTMAX-3", NULL },
+    { 0, -1, "RTMAX-2", NULL },
+    { 0, -1, "RTMAX-1", NULL },
+    { 0, -1, "RTMAX",   NULL },
+#endif
+    { -1, 1024, "QWERT", NULL },	/* invalid */
+    { -1, 0, NULL, NULL }
+};
+
+#ifndef HAVE_SIG2STR
+static int
+test_sig2str(int *ntests)
+{
+    struct signal_data *d;
+    int rval, errors = 0;
+    char sigstr[SIG2STR_MAX];
+
+    for (d = signal_data; d->signo != 0; d++) {
+	(*ntests)++;
+	rval = sudo_sig2str(d->signo, sigstr);
+	if (rval != d->rval) {
+	    sudo_warnx_nodebug("FAIL: sig2str(SIG%s): %d != %d",
+		d->sigstr, rval, d->rval);
+	    errors++;
+	    continue;
+	}
+	if (rval != 0)
+	    continue;
+	if (strcmp(sigstr, d->sigstr) != 0 &&
+	    (d->altstr != NULL && strcmp(sigstr, d->altstr) != 0)) {
+	    sudo_warnx_nodebug("FAIL: signal %d: %s != %s", d->signo,
+		sigstr, d->sigstr);
+	    errors++;
+	    continue;
+	}
+    }
+
+    return errors;
+}
+#else
+static int
+test_sig2str(int *ntests)
+{
+    return 0;
+}
+#endif /* HAVE_SIG2STR */
+
+#ifndef HAVE_STR2SIG
+static int
+test_str2sig(int *ntests)
+{
+    struct signal_data *d;
+    int rval, errors = 0;
+    int signo;
+
+    for (d = signal_data; d->sigstr != NULL; d++) {
+	(*ntests)++;
+	rval = sudo_str2sig(d->sigstr, &signo);
+	if (rval != d->rval) {
+	    sudo_warnx_nodebug("FAIL: str2sig(SIG%s): %d != %d",
+		d->sigstr, rval, d->rval);
+	    errors++;
+	    continue;
+	}
+	if (rval != 0)
+	    continue;
+	if (signo != d->signo) {
+	    sudo_warnx_nodebug("FAIL: signal SIG%s: %d != %d", d->sigstr,
+		signo, d->signo);
+	    errors++;
+	    continue;
+	}
+    }
+
+    return errors;
+}
+#else
+static int
+test_str2sig(int *ntests)
+{
+    return 0;
+}
+#endif /* HAVE_STR2SIG */
+
+#if defined(SIGRTMIN) && defined(SIGRTMAX)
+static
+void init_sigrt(void)
+{
+    int i;
+
+    /* Initialize real-time signal values. */
+    for (i = 0; signal_data[i].signo != -1; i++)
+	continue;
+    signal_data[i++].signo = SIGRTMIN;
+    signal_data[i++].signo = SIGRTMIN + 1;
+    signal_data[i++].signo = SIGRTMIN + 2;
+    signal_data[i++].signo = SIGRTMIN + 3;
+    signal_data[i++].signo = SIGRTMAX - 3;
+    signal_data[i++].signo = SIGRTMAX - 2;
+    signal_data[i++].signo = SIGRTMAX - 1;
+    signal_data[i++].signo = SIGRTMAX;
+
+}
+#else
+static
+void init_sigrt(void)
+{
+    /* No real-time signals. */
+    return;
+}
+#endif
+
+/*
+ * Simple tests for sig2str() and str2sig().
+ */
+int
+main(int argc, char *argv[])
+{
+    int ch, errors = 0, ntests = 0;
+
+    initprogname(argc > 0 ? argv[0] : "strsig_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    init_sigrt();
+    errors += test_sig2str(&ntests);
+    errors += test_str2sig(&ntests);
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/util/regress/strsplit/strsplit_test.c b/lib/util/regress/strsplit/strsplit_test.c
new file mode 100644
index 0000000..7f0e071
--- /dev/null
+++ b/lib/util/regress/strsplit/strsplit_test.c
@@ -0,0 +1,117 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that sudo_strsplit() works as expected.
+ */
+
+struct strsplit_test {
+    const char *input;
+    size_t input_len;
+    const char **output;
+};
+
+static const char test1_in[] = " vi ";
+static const char *test1_out[] = { "vi", NULL };
+static const char test2_in[] = "vi -r ";
+static const char *test2_out[] = { "vi", "-r", NULL };
+static const char test3_in[] = "vi -r  -R abc\tdef ";
+static const char *test3_out[] = { "vi", "-r", "-R", "abc", "def", NULL };
+static const char test4_in[] = "vi -r  -R abc\tdef ";
+static const char *test4_out[] = { "vi", "-r", "-R", "abc", NULL };
+static const char test5_in[] = "";
+static const char *test5_out[] = { NULL };
+
+static struct strsplit_test test_data[] = {
+    { test1_in, sizeof(test1_in) - 1, test1_out },
+    { test2_in, sizeof(test2_in) - 1, test2_out },
+    { test3_in, sizeof(test3_in) - 1, test3_out },
+    { test4_in, sizeof(test4_in) - 5, test4_out },
+    { test5_in, sizeof(test5_in) - 1, test5_out },
+    { NULL, 0, NULL }
+};
+
+int
+main(int argc, char *argv[])
+{
+    const char *cp, *ep, *input_end;
+    int ch, i, j, errors = 0, ntests = 0;
+    size_t len;
+
+    initprogname(argc > 0 ? argv[0] : "strsplit_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (i = 0; test_data[i].input != NULL; i++) {
+	input_end = test_data[i].input + test_data[i].input_len;
+	cp = sudo_strsplit(test_data[i].input, input_end, " \t", &ep);
+	for (j = 0; test_data[i].output[j] != NULL; j++) {
+	    ntests++;
+	    len = strlen(test_data[i].output[j]);
+	    if ((size_t)(ep - cp) != len) {
+		sudo_warnx_nodebug("failed test #%d: bad length, expected "
+		    "%zu, got %zu", ntests, len, (size_t)(ep - cp));
+		errors++;
+		continue;
+	    }
+	    ntests++;
+	    if (strncmp(cp, test_data[i].output[j], len) != 0) {
+		sudo_warnx_nodebug("failed test #%d: expected %s, got %.*s",
+		    ntests, test_data[i].output[j], (int)(ep - cp), cp);
+		errors++;
+		continue;
+	    }
+	    cp = sudo_strsplit(NULL, input_end, " \t", &ep);
+	}
+	ntests++;
+	if (cp != NULL) {
+	    sudo_warnx_nodebug("failed test #%d: extra tokens \"%.*s\"",
+		ntests, (int)(input_end - cp), cp);
+	    errors++;
+	}
+    }
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    exit(errors);
+}
diff --git a/lib/util/regress/strtofoo/strtobool_test.c b/lib/util/regress/strtofoo/strtobool_test.c
new file mode 100644
index 0000000..5b5a6cf
--- /dev/null
+++ b/lib/util/regress/strtofoo/strtobool_test.c
@@ -0,0 +1,98 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/* sudo_strtobool() tests */
+static struct strtobool_data {
+    const char *bool_str;
+    int value;
+} strtobool_data[] = {
+    { "true", true },
+    { "false", false },
+    { "TrUe", true },
+    { "fAlSe", false },
+    { "1", true },
+    { "0", false },
+    { "on", true },
+    { "off", false },
+    { "yes", true },
+    { "no", false },
+    { "nope", -1 },
+    { "10", -1 },
+    { "one", -1 },
+    { "zero", -1 },
+    { NULL, 0 }
+};
+
+/*
+ * Simple tests for sudo_strtobool()
+ */
+int
+main(int argc, char *argv[])
+{
+    struct strtobool_data *d;
+    int errors = 0, ntests = 0;
+    int ch, value;
+
+    initprogname(argc > 0 ? argv[0] : "strtobool_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (d = strtobool_data; d->bool_str != NULL; d++) {
+	ntests++;
+	value = sudo_strtobool(d->bool_str);
+	if (value != d->value) {
+	    sudo_warnx_nodebug("FAIL: %s != %d", d->bool_str, d->value);
+	    errors++;
+	}
+    }
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/util/regress/strtofoo/strtoid_test.c b/lib/util/regress/strtofoo/strtoid_test.c
new file mode 100644
index 0000000..eec9d04
--- /dev/null
+++ b/lib/util/regress/strtofoo/strtoid_test.c
@@ -0,0 +1,118 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/* sudo_strtoidx() tests */
+static struct strtoidx_data {
+    const char *idstr;
+    id_t id;
+    const char *sep;
+    const char *ep;
+    int errnum;
+} strtoidx_data[] = {
+    { "0,1", 0, ",", ",", 0 },
+    { "10", 10, NULL, NULL, 0 },
+    { "-1", 0, NULL, NULL, EINVAL },
+    { "4294967295", 0, NULL, NULL, EINVAL },
+    { "4294967296", 0, NULL, NULL, ERANGE },
+    { "-2147483649", 0, NULL, NULL, ERANGE },
+    { "-2", -2, NULL, NULL, 0 },
+#if SIZEOF_ID_T != SIZEOF_LONG_LONG
+    { "-2", (id_t)4294967294U, NULL, NULL, 0 },
+#endif
+    { "4294967294", (id_t)4294967294U, NULL, NULL, 0 },
+    { NULL, 0, NULL, NULL, 0 }
+};
+
+/*
+ * Simple tests for sudo_strtoidx()
+ */
+int
+main(int argc, char *argv[])
+{
+    int ch, errors = 0, ntests = 0;
+    struct strtoidx_data *d;
+    const char *errstr;
+    char *ep;
+    id_t value;
+
+    initprogname(argc > 0 ? argv[0] : "strtoid_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (d = strtoidx_data; d->idstr != NULL; d++) {
+	ntests++;
+	errstr = "some error";
+	value = sudo_strtoidx(d->idstr, d->sep, &ep, &errstr);
+	if (d->errnum != 0) {
+	    if (errstr == NULL) {
+		sudo_warnx_nodebug("FAIL: %s: missing errstr for errno %d",
+		    d->idstr, d->errnum);
+		errors++;
+	    } else if (value != 0) {
+		sudo_warnx_nodebug("FAIL: %s should return 0 on error",
+		    d->idstr);
+		errors++;
+	    } else if (errno != d->errnum) {
+		sudo_warnx_nodebug("FAIL: %s: errno mismatch, %d != %d",
+		    d->idstr, errno, d->errnum);
+		errors++;
+	    }
+	} else if (errstr != NULL) {
+	    sudo_warnx_nodebug("FAIL: %s: %s", d->idstr, errstr);
+	    errors++;
+	} else if (value != d->id) {
+	    sudo_warnx_nodebug("FAIL: %s != %u", d->idstr, (unsigned int)d->id);
+	    errors++;
+	} else if (d->ep != NULL && ep[0] != d->ep[0]) {
+	    sudo_warnx_nodebug("FAIL: ep[0] %d != %d", (int)(unsigned char)ep[0],
+		(int)(unsigned char)d->ep[0]);
+	    errors++;
+	}
+    }
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/util/regress/strtofoo/strtomode_test.c b/lib/util/regress/strtofoo/strtomode_test.c
new file mode 100644
index 0000000..5e4d862
--- /dev/null
+++ b/lib/util/regress/strtofoo/strtomode_test.c
@@ -0,0 +1,91 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/* sudo_strtomode() tests */
+static struct strtomode_data {
+    const char *mode_str;
+    mode_t mode;
+} strtomode_data[] = {
+    { "755", 0755 },
+    { "007", 007 },
+    { "7", 7 },
+    { "8", (mode_t)-1 },
+    { NULL, 0 }
+};
+
+/*
+ * Simple tests for sudo_strtomode().
+ */
+int
+main(int argc, char *argv[])
+{
+    struct strtomode_data *d;
+    const char *errstr;
+    int ch, errors = 0, ntests = 0;
+    mode_t mode;
+
+    initprogname(argc > 0 ? argv[0] : "strtomode_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (d = strtomode_data; d->mode_str != NULL; d++) {
+	ntests++;
+	errstr = "some error";
+	mode = sudo_strtomode(d->mode_str, &errstr);
+	if (errstr != NULL) {
+	    if (d->mode != (mode_t)-1) {
+		sudo_warnx_nodebug("FAIL: %s: %s", d->mode_str, errstr);
+		errors++;
+	    }
+	} else if (mode != d->mode) {
+	    sudo_warnx_nodebug("FAIL: %s != 0%o", d->mode_str,
+		(unsigned int) d->mode);
+	    errors++;
+	}
+    }
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/util/regress/strtofoo/strtonum_test.c b/lib/util/regress/strtofoo/strtonum_test.c
new file mode 100644
index 0000000..8aca97d
--- /dev/null
+++ b/lib/util/regress/strtofoo/strtonum_test.c
@@ -0,0 +1,135 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_fatal.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/* sudo_strtonum() tests */
+static struct strtonum_data {
+    const char *str;
+    long long minval;
+    long long maxval;
+    long long retval;
+    int errnum;
+} strtonum_data[] = {
+    { "0,1", LLONG_MIN, LLONG_MAX, 0, EINVAL },
+    { "0", INT_MAX, INT_MIN, 0, EINVAL },
+    { "", 0, UINT_MAX, 0, EINVAL },
+    { " ", 0, UINT_MAX, 0, EINVAL },
+    { "-1 ", 0, UINT_MAX, 0, EINVAL },
+    { "9223372036854775808X", LLONG_MIN, LLONG_MAX, 0, EINVAL },
+    { "-9223372036854775809X", LLONG_MIN, LLONG_MAX, 0, EINVAL },
+
+    { "10", 0, 255, 10, 0 },
+    { "-1", 0, UINT_MAX, 0, ERANGE },
+
+    { "-40", -100, -50, 0, ERANGE },
+    { "-60", -100, -50, -60, 0 },
+    { "-200", -100, -50, 0, ERANGE },
+
+    { "42", 42, 42, 42, 0 },
+    { "-42", -42, -42, -42, 0 },
+
+    { "4294967295", 0, UINT_MAX, UINT_MAX, 0 },
+    { "4294967295", INT_MIN, INT_MAX, 0, ERANGE },
+    { "4294967296", 0, UINT_MAX, 0, ERANGE },
+
+    { "2147483647", INT_MIN, INT_MAX, INT_MAX, 0 },
+    { "-2147483648", INT_MIN, INT_MAX, INT_MIN, 0 },
+    { "2147483648", INT_MIN, INT_MAX, 0, ERANGE },
+    { "-2147483649", INT_MIN, INT_MAX, 0, ERANGE },
+
+    { "9223372036854775807", LLONG_MIN, LLONG_MAX, LLONG_MAX, 0 },
+    { "-9223372036854775808", LLONG_MIN, LLONG_MAX, LLONG_MIN, 0 },
+    { "9223372036854775808", LLONG_MIN, LLONG_MAX, 0, ERANGE },
+    { "-9223372036854775809", LLONG_MIN, LLONG_MAX, 0, ERANGE },
+
+    { NULL, 0, 0, 0, 0 }
+};
+
+/*
+ * Simple tests for sudo_strtonum()
+ */
+int
+main(int argc, char *argv[])
+{
+    int ch, errors = 0, ntests = 0;
+    struct strtonum_data *d;
+    const char *errstr;
+    long long value;
+
+    initprogname(argc > 0 ? argv[0] : "strtonum_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    for (d = strtonum_data; d->str != NULL; d++) {
+	ntests++;
+	errstr = "some error";
+	value = sudo_strtonum(d->str, d->minval, d->maxval, &errstr);
+	if (d->errnum != 0) {
+	    if (errstr == NULL) {
+		sudo_warnx_nodebug("FAIL: \"%s\": missing errstr for errno %d",
+		    d->str, d->errnum);
+		errors++;
+	    } else if (value != 0) {
+		sudo_warnx_nodebug("FAIL: %s should return 0 on error",
+		    d->str);
+		errors++;
+	    } else if (errno != d->errnum) {
+		sudo_warnx_nodebug("FAIL: \"%s\": errno mismatch, %d != %d",
+		    d->str, errno, d->errnum);
+		errors++;
+	    }
+	} else if (errstr != NULL) {
+	    sudo_warnx_nodebug("FAIL: \"%s\": %s", d->str, errstr);
+	    errors++;
+	} else if (value != d->retval) {
+	    sudo_warnx_nodebug("FAIL: %s != %lld", d->str, d->retval);
+	    errors++;
+	}
+    }
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    return errors;
+}
diff --git a/lib/util/regress/sudo_conf/conf_test.c b/lib/util/regress/sudo_conf/conf_test.c
new file mode 100644
index 0000000..1d9c1b6
--- /dev/null
+++ b/lib/util/regress/sudo_conf/conf_test.c
@@ -0,0 +1,125 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_conf.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+static void sudo_conf_dump(void);
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/* Awful hack for macOS where the default group source is dynamic. */
+#ifdef __APPLE__
+# undef GROUP_SOURCE_ADAPTIVE
+# define GROUP_SOURCE_ADAPTIVE GROUP_SOURCE_DYNAMIC
+#endif
+
+static void
+usage(void)
+{
+    fprintf(stderr, "usage: %s [-v] conf_file\n", getprogname());
+    exit(EXIT_FAILURE);
+}
+
+/*
+ * Simple test driver for sudo_conf().
+ * Parses the given configuration file and dumps the resulting
+ * sudo_conf_data struct to the standard output.
+ */
+int
+main(int argc, char *argv[])
+{
+    int ch;
+
+    initprogname(argc > 0 ? argv[0] : "conf_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    usage();
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    if (argc != 1)
+	usage();
+
+    sudo_conf_clear_paths();
+    if (sudo_conf_read(argv[0], SUDO_CONF_ALL) == -1)
+	return EXIT_FAILURE;
+    sudo_conf_dump();
+
+    return EXIT_SUCCESS;
+}
+
+static void
+sudo_conf_dump(void)
+{
+    struct plugin_info_list *plugins = sudo_conf_plugins();
+    struct sudo_conf_debug_list *debug_list = sudo_conf_debugging();
+    struct sudo_conf_debug *debug_spec;
+    struct sudo_debug_file *debug_file;
+    struct plugin_info *info;
+
+    printf("Set disable_coredump %s\n",
+	sudo_conf_disable_coredump() ? "true" : "false");
+    printf("Set group_source %s\n",
+	sudo_conf_group_source() == GROUP_SOURCE_ADAPTIVE ? "adaptive" :
+	sudo_conf_group_source() == GROUP_SOURCE_STATIC ? "static" : "dynamic");
+    printf("Set max_groups %d\n", sudo_conf_max_groups());
+    printf("Set probe_interfaces %s\n",
+	sudo_conf_probe_interfaces() ? "true" : "false");
+    if (sudo_conf_askpass_path() != NULL)
+	printf("Path askpass %s\n", sudo_conf_askpass_path());
+    if (sudo_conf_sesh_path() != NULL)
+	printf("Path sesh %s\n", sudo_conf_sesh_path());
+    if (sudo_conf_intercept_path() != NULL)
+	printf("Path intercept %s\n", sudo_conf_intercept_path());
+    if (sudo_conf_noexec_path() != NULL)
+	printf("Path noexec %s\n", sudo_conf_noexec_path());
+    if (sudo_conf_plugin_dir_path() != NULL)
+	printf("Path plugin_dir %s\n", sudo_conf_plugin_dir_path());
+    TAILQ_FOREACH(info, plugins, entries) {
+	printf("Plugin %s %s", info->symbol_name, info->path);
+	if (info->options) {
+	    char * const * op;
+	    for (op = info->options; *op != NULL; op++)
+		printf(" %s", *op);
+	}
+	putchar('\n');
+    }
+    TAILQ_FOREACH(debug_spec, debug_list, entries) {
+	TAILQ_FOREACH(debug_file, &debug_spec->debug_files, entries) {
+	    printf("Debug %s %s %s\n", debug_spec->progname,
+		debug_file->debug_file, debug_file->debug_flags);
+	}
+    }
+}
diff --git a/lib/util/regress/sudo_conf/test1.in b/lib/util/regress/sudo_conf/test1.in
new file mode 100644
index 0000000..bc9f626
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test1.in
@@ -0,0 +1,73 @@
+#
+# Sample /etc/sudo.conf file
+#
+# Format:
+#   Plugin plugin_name plugin_path plugin_options ...
+#   Path askpass /path/to/askpass
+#   Path noexec /path/to/sudo_noexec.so
+#   Debug sudo /var/log/sudo_debug all@warn
+#   Set disable_coredump true
+#
+# Sudo plugins:
+#
+# The plugin_path is relative to ${prefix}/libexec unless fully qualified.
+# The plugin_name corresponds to a global symbol in the plugin
+#   that contains the plugin interface structure.
+# The plugin_options are optional.
+#
+# The sudoers plugin is used by default if no Plugin lines are present.
+Plugin sudoers_policy sudoers.so
+Plugin sudoers_io sudoers.so
+
+#
+# Sudo askpass:
+#
+# An askpass helper program may be specified to provide a graphical
+# password prompt for "sudo -A" support.  Sudo does not ship with its
+# own askpass program but can use the OpenSSH askpass.
+#
+# Use the OpenSSH askpass
+Path askpass /usr/X11R6/bin/ssh-askpass
+#
+# Use the Gnome OpenSSH askpass
+#Path askpass /usr/libexec/openssh/gnome-ssh-askpass
+
+#
+# Sudo noexec:
+#
+# Path to a shared library containing replacements for the execv(),
+# execve() and fexecve() library functions that just return an error.
+# This is used to implement the "noexec" functionality on systems that
+# support LD_PRELOAD or its equivalent.
+# The compiled-in value is usually sufficient and should only be changed
+# if you rename or move the sudo_noexec.so file.
+#
+Path noexec /usr/local/libexec/sudo_noexec.so
+Path noexec /usr/libexec/sudo_noexec.so
+
+#
+# Core dumps:
+#
+# By default, sudo disables core dumps while it is executing (they
+# are re-enabled for the command that is run).
+# To aid in debugging sudo problems, you may wish to enable core
+# dumps by setting "disable_coredump" to false.
+#
+Set disable_coredump false
+
+#
+# User groups:
+#
+# Sudo passes the user's group list to the policy plugin.
+# If the user is a member of the maximum number of groups (usually 16),
+# sudo will query the group database directly to be sure to include
+# the full list of groups.
+#
+# On some systems, this can be expensive so the behavior is configurable.
+# The "group_source" setting has three possible values:
+#   static   - use the user's list of groups returned by the kernel.
+#   dynamic  - query the group database to find the list of groups.
+#   adaptive - if user is in less than the maximum number of groups.
+#	       use the kernel list, else query the group database.
+#
+Set group_source static
diff --git a/lib/util/regress/sudo_conf/test1.out.ok b/lib/util/regress/sudo_conf/test1.out.ok
new file mode 100644
index 0000000..d5b784c
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test1.out.ok
@@ -0,0 +1,8 @@
+Set disable_coredump false
+Set group_source static
+Set max_groups -1
+Set probe_interfaces true
+Path askpass /usr/X11R6/bin/ssh-askpass
+Path noexec /usr/libexec/sudo_noexec.so
+Plugin sudoers_policy sudoers.so
+Plugin sudoers_io sudoers.so
diff --git a/lib/util/regress/sudo_conf/test2.in b/lib/util/regress/sudo_conf/test2.in
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test2.in
diff --git a/lib/util/regress/sudo_conf/test2.out.ok b/lib/util/regress/sudo_conf/test2.out.ok
new file mode 100644
index 0000000..cfd8a08
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test2.out.ok
@@ -0,0 +1,4 @@
+Set disable_coredump true
+Set group_source adaptive
+Set max_groups -1
+Set probe_interfaces true
diff --git a/lib/util/regress/sudo_conf/test3.in b/lib/util/regress/sudo_conf/test3.in
new file mode 100644
index 0000000..b111a23
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test3.in
@@ -0,0 +1,2 @@
+Plugin sudoers_policy sudoers.so sudoers_file=/etc/sudoers sudoers_mode=0400 sudoers_gid=0 sudoers_uid=0
+Plugin sudoers_io sudoers.so
diff --git a/lib/util/regress/sudo_conf/test3.out.ok b/lib/util/regress/sudo_conf/test3.out.ok
new file mode 100644
index 0000000..3ff2284
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test3.out.ok
@@ -0,0 +1,6 @@
+Set disable_coredump true
+Set group_source adaptive
+Set max_groups -1
+Set probe_interfaces true
+Plugin sudoers_policy sudoers.so sudoers_file=/etc/sudoers sudoers_mode=0400 sudoers_gid=0 sudoers_uid=0
+Plugin sudoers_io sudoers.so
diff --git a/lib/util/regress/sudo_conf/test4.err.ok b/lib/util/regress/sudo_conf/test4.err.ok
new file mode 100644
index 0000000..2d68831
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test4.err.ok
@@ -0,0 +1 @@
+conf_test: invalid value for disable_coredump "foo" in regress/sudo_conf/test4.in, line 1
diff --git a/lib/util/regress/sudo_conf/test4.in b/lib/util/regress/sudo_conf/test4.in
new file mode 100644
index 0000000..a60236a
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test4.in
@@ -0,0 +1 @@
+Set disable_coredump foo
diff --git a/lib/util/regress/sudo_conf/test4.out.ok b/lib/util/regress/sudo_conf/test4.out.ok
new file mode 100644
index 0000000..cfd8a08
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test4.out.ok
@@ -0,0 +1,4 @@
+Set disable_coredump true
+Set group_source adaptive
+Set max_groups -1
+Set probe_interfaces true
diff --git a/lib/util/regress/sudo_conf/test5.err.ok b/lib/util/regress/sudo_conf/test5.err.ok
new file mode 100644
index 0000000..85ef46b
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test5.err.ok
@@ -0,0 +1 @@
+conf_test: invalid max groups "0" in regress/sudo_conf/test5.in, line 1
diff --git a/lib/util/regress/sudo_conf/test5.in b/lib/util/regress/sudo_conf/test5.in
new file mode 100644
index 0000000..3a20495
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test5.in
@@ -0,0 +1 @@
+Set max_groups 0
diff --git a/lib/util/regress/sudo_conf/test5.out.ok b/lib/util/regress/sudo_conf/test5.out.ok
new file mode 100644
index 0000000..cfd8a08
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test5.out.ok
@@ -0,0 +1,4 @@
+Set disable_coredump true
+Set group_source adaptive
+Set max_groups -1
+Set probe_interfaces true
diff --git a/lib/util/regress/sudo_conf/test6.in b/lib/util/regress/sudo_conf/test6.in
new file mode 100644
index 0000000..537fa57
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test6.in
@@ -0,0 +1 @@
+Set max_groups 16
diff --git a/lib/util/regress/sudo_conf/test6.out.ok b/lib/util/regress/sudo_conf/test6.out.ok
new file mode 100644
index 0000000..674ae38
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test6.out.ok
@@ -0,0 +1,4 @@
+Set disable_coredump true
+Set group_source adaptive
+Set max_groups 16
+Set probe_interfaces true
diff --git a/lib/util/regress/sudo_conf/test7.in b/lib/util/regress/sudo_conf/test7.in
new file mode 100644
index 0000000..7438131
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test7.in
@@ -0,0 +1,4 @@
+Debug sudo /var/log/sudo_debug all@info
+Debug sudo /var/log/sudo_debug util@debug
+Debug visudo /var/log/sudo_debug match@debug
+Debug sudoers.so /var/log/sudoers_debug match@debug,nss@info
diff --git a/lib/util/regress/sudo_conf/test7.out.ok b/lib/util/regress/sudo_conf/test7.out.ok
new file mode 100644
index 0000000..7ec856d
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test7.out.ok
@@ -0,0 +1,8 @@
+Set disable_coredump true
+Set group_source adaptive
+Set max_groups -1
+Set probe_interfaces true
+Debug sudo /var/log/sudo_debug all@info
+Debug sudo /var/log/sudo_debug util@debug
+Debug visudo /var/log/sudo_debug match@debug
+Debug sudoers.so /var/log/sudoers_debug match@debug,nss@info
diff --git a/lib/util/regress/sudo_parseln/parseln_test.c b/lib/util/regress/sudo_parseln/parseln_test.c
new file mode 100644
index 0000000..8cd7294
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/parseln_test.c
@@ -0,0 +1,64 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Simple test driver for sudo_parseln().
+ * Behaves similarly to "cat -n" but with comment removal
+ * and line continuation.
+ */
+
+int
+main(int argc, char *argv[])
+{
+    unsigned int lineno = 0;
+    size_t linesize = 0;
+    char *line = NULL;
+    int ch;
+
+    initprogname(argc > 0 ? argv[0] : "parseln_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    while (sudo_parseln(&line, &linesize, &lineno, stdin, 0) != -1)
+	printf("%6u\t%s\n", lineno, line);
+    free(line);
+    return EXIT_SUCCESS;
+}
diff --git a/lib/util/regress/sudo_parseln/test1.in b/lib/util/regress/sudo_parseln/test1.in
new file mode 100644
index 0000000..8f417dd
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test1.in
@@ -0,0 +1,72 @@
+#
+# Sample /etc/sudo.conf file
+#
+# Format:
+#   Plugin plugin_name plugin_path plugin_options ...
+#   Path askpass /path/to/askpass
+#   Path noexec /path/to/sudo_noexec.so
+#   Debug sudo /var/log/sudo_debug all@warn
+#   Set disable_coredump true
+#
+# Sudo plugins:
+#
+# The plugin_path is relative to ${prefix}/libexec unless fully qualified.
+# The plugin_name corresponds to a global symbol in the plugin
+#   that contains the plugin interface structure.
+# The plugin_options are optional.
+#
+# The sudoers plugin is used by default if no Plugin lines are present.
+Plugin sudoers_policy sudoers.so
+Plugin sudoers_io sudoers.so
+
+#
+# Sudo askpass:
+#
+# An askpass helper program may be specified to provide a graphical
+# password prompt for "sudo -A" support.  Sudo does not ship with its
+# own askpass program but can use the OpenSSH askpass.
+#
+# Use the OpenSSH askpass
+#Path askpass /usr/X11R6/bin/ssh-askpass
+#
+# Use the Gnome OpenSSH askpass
+#Path askpass /usr/libexec/openssh/gnome-ssh-askpass
+
+#
+# Sudo noexec:
+#
+# Path to a shared library containing replacements for the execv(),
+# execve() and fexecve() library functions that just return an error.
+# This is used to implement the "noexec" functionality on systems that
+# support LD_PRELOAD or its equivalent.
+# The compiled-in value is usually sufficient and should only be changed
+# if you rename or move the sudo_noexec.so file.
+#
+#Path noexec /usr/libexec/sudo_noexec.so
+
+#
+# Core dumps:
+#
+# By default, sudo disables core dumps while it is executing (they
+# are re-enabled for the command that is run).
+# To aid in debugging sudo problems, you may wish to enable core
+# dumps by setting "disable_coredump" to false.
+#
+#Set disable_coredump false
+
+#
+# User groups:
+#
+# Sudo passes the user's group list to the policy plugin.
+# If the user is a member of the maximum number of groups (usually 16),
+# sudo will query the group database directly to be sure to include
+# the full list of groups.
+#
+# On some systems, this can be expensive so the behavior is configurable.
+# The "group_source" setting has three possible values:
+#   static   - use the user's list of groups returned by the kernel.
+#   dynamic  - query the group database to find the list of groups.
+#   adaptive - if user is in less than the maximum number of groups.
+#	       use the kernel list, else query the group database.
+#
+#Set group_source static
diff --git a/lib/util/regress/sudo_parseln/test1.out.ok b/lib/util/regress/sudo_parseln/test1.out.ok
new file mode 100644
index 0000000..c98ca77
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test1.out.ok
@@ -0,0 +1,72 @@
+     1	
+     2	
+     3	
+     4	
+     5	
+     6	
+     7	
+     8	
+     9	
+    10	
+    11	
+    12	
+    13	
+    14	
+    15	
+    16	
+    17	
+    18	
+    19	Plugin sudoers_policy sudoers.so
+    20	Plugin sudoers_io sudoers.so
+    21	
+    22	
+    23	
+    24	
+    25	
+    26	
+    27	
+    28	
+    29	
+    30	
+    31	
+    32	
+    33	
+    34	
+    35	
+    36	
+    37	
+    38	
+    39	
+    40	
+    41	
+    42	
+    43	
+    44	
+    45	
+    46	
+    47	
+    48	
+    49	
+    50	
+    51	
+    52	
+    53	
+    54	
+    55	
+    56	
+    57	
+    58	
+    59	
+    60	
+    61	
+    62	
+    63	
+    64	
+    65	
+    66	
+    67	
+    68	
+    69	
+    70	
+    71	
+    72	
diff --git a/lib/util/regress/sudo_parseln/test2.in b/lib/util/regress/sudo_parseln/test2.in
new file mode 100644
index 0000000..49166ee
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test2.in
@@ -0,0 +1,8 @@
+this \
+is all \
+one line
+# this is a comment, and does not get continued\
+trim the \
+	leading \
+    white \
+space
diff --git a/lib/util/regress/sudo_parseln/test2.out.ok b/lib/util/regress/sudo_parseln/test2.out.ok
new file mode 100644
index 0000000..d921968
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test2.out.ok
@@ -0,0 +1,3 @@
+     3	this is all one line
+     4	
+     8	trim the leading white space
diff --git a/lib/util/regress/sudo_parseln/test3.in b/lib/util/regress/sudo_parseln/test3.in
new file mode 100644
index 0000000..e372c07
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test3.in
@@ -0,0 +1 @@
+line continuation at EOF \
diff --git a/lib/util/regress/sudo_parseln/test3.out.ok b/lib/util/regress/sudo_parseln/test3.out.ok
new file mode 100644
index 0000000..2e8d16d
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test3.out.ok
@@ -0,0 +1 @@
+     1	line continuation at EOF 
diff --git a/lib/util/regress/sudo_parseln/test4.in b/lib/util/regress/sudo_parseln/test4.in
new file mode 100644
index 0000000..3583f3b
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test4.in
@@ -0,0 +1,4 @@
+line contin\
+uation raw
+line contin\
+	uation indented
diff --git a/lib/util/regress/sudo_parseln/test4.out.ok b/lib/util/regress/sudo_parseln/test4.out.ok
new file mode 100644
index 0000000..38afbeb
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test4.out.ok
@@ -0,0 +1,2 @@
+     2	line continuation raw
+     4	line continuation indented
diff --git a/lib/util/regress/sudo_parseln/test5.in b/lib/util/regress/sudo_parseln/test5.in
new file mode 100644
index 0000000..57ddad2
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test5.in
@@ -0,0 +1 @@
+\
diff --git a/lib/util/regress/sudo_parseln/test5.out.ok b/lib/util/regress/sudo_parseln/test5.out.ok
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test5.out.ok
diff --git a/lib/util/regress/sudo_parseln/test6.in b/lib/util/regress/sudo_parseln/test6.in
new file mode 100644
index 0000000..95cac84
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test6.in
@@ -0,0 +1,3 @@
+	leading and trailing white space	
+ # a comment
+\
diff --git a/lib/util/regress/sudo_parseln/test6.out.ok b/lib/util/regress/sudo_parseln/test6.out.ok
new file mode 100644
index 0000000..340765e
--- /dev/null
+++ b/lib/util/regress/sudo_parseln/test6.out.ok
@@ -0,0 +1,2 @@
+     1	leading and trailing white space
+     2	
diff --git a/lib/util/regress/tailq/hltq_test.c b/lib/util/regress/tailq/hltq_test.c
new file mode 100644
index 0000000..2a1b2bb
--- /dev/null
+++ b/lib/util/regress/tailq/hltq_test.c
@@ -0,0 +1,205 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_queue.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Note: HLTQ_ENTRY is intentionally in the middle of the struct
+ *       to catch bad assumptions in the PREV/NEXT macros.
+ */
+struct test_data {
+    int a;
+    HLTQ_ENTRY(test_data) entries;
+    char b;
+};
+
+TAILQ_HEAD(test_data_list, test_data);
+
+/*
+ * Simple tests for headless tail queue macros.
+ */
+int
+main(int argc, char *argv[])
+{
+    struct test_data d1, d2, d3;
+    struct test_data *hltq;
+    struct test_data_list tq;
+    int ch, errors = 0, ntests = 0;
+
+    initprogname(argc > 0 ? argv[0] : "hltq_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    /*
+     * Initialize three data elements and concatenate them in order.
+     */
+    HLTQ_INIT(&d1, entries);
+    d1.a = 1;
+    d1.b = 'a';
+    if (HLTQ_FIRST(&d1) != &d1) {
+	sudo_warnx_nodebug("FAIL: HLTQ_FIRST(1 entry) doesn't return first element: got %p, expected %p", HLTQ_FIRST(&d1), &d1);
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_LAST(&d1, test_data, entries) != &d1) {
+	sudo_warnx_nodebug("FAIL: HLTQ_LAST(1 entry) doesn't return first element: got %p, expected %p", HLTQ_LAST(&d1, test_data, entries), &d1);
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_PREV(&d1, test_data, entries) != NULL) {
+	sudo_warnx_nodebug("FAIL: HLTQ_PREV(1 entry) doesn't return NULL: got %p", HLTQ_PREV(&d1, test_data, entries));
+	errors++;
+    }
+    ntests++;
+
+    HLTQ_INIT(&d2, entries);
+    d2.a = 2;
+    d2.b = 'b';
+
+    HLTQ_INIT(&d3, entries);
+    d3.a = 3;
+    d3.b = 'c';
+
+    HLTQ_CONCAT(&d1, &d2, entries);
+    HLTQ_CONCAT(&d1, &d3, entries);
+    hltq = &d1;
+
+    /*
+     * Verify that HLTQ_FIRST, HLTQ_LAST, HLTQ_NEXT, HLTQ_PREV
+     * work as expected.
+     */
+    if (HLTQ_FIRST(hltq) != &d1) {
+	sudo_warnx_nodebug("FAIL: HLTQ_FIRST(3 entries) doesn't return first element: got %p, expected %p", HLTQ_FIRST(hltq), &d1);
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_LAST(hltq, test_data, entries) != &d3) {
+	sudo_warnx_nodebug("FAIL: HLTQ_LAST(3 entries) doesn't return third element: got %p, expected %p", HLTQ_LAST(hltq, test_data, entries), &d3);
+	errors++;
+    }
+    ntests++;
+
+    if (HLTQ_NEXT(&d1, entries) != &d2) {
+	sudo_warnx_nodebug("FAIL: HLTQ_NEXT(&d1) doesn't return &d2: got %p, expected %p", HLTQ_NEXT(&d1, entries), &d2);
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_NEXT(&d2, entries) != &d3) {
+	sudo_warnx_nodebug("FAIL: HLTQ_NEXT(&d2) doesn't return &d3: got %p, expected %p", HLTQ_NEXT(&d2, entries), &d3);
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_NEXT(&d3, entries) != NULL) {
+	sudo_warnx_nodebug("FAIL: HLTQ_NEXT(&d3) doesn't return NULL: got %p", HLTQ_NEXT(&d3, entries));
+	errors++;
+    }
+    ntests++;
+
+    if (HLTQ_PREV(&d1, test_data, entries) != NULL) {
+	sudo_warnx_nodebug("FAIL: HLTQ_PREV(&d1) doesn't return NULL: got %p", HLTQ_PREV(&d1, test_data, entries));
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_PREV(&d2, test_data, entries) != &d1) {
+	sudo_warnx_nodebug("FAIL: HLTQ_PREV(&d2) doesn't return &d1: got %p, expected %p", HLTQ_PREV(&d2, test_data, entries), &d1);
+	errors++;
+    }
+    ntests++;
+    if (HLTQ_PREV(&d3, test_data, entries) != &d2) {
+	sudo_warnx_nodebug("FAIL: HLTQ_PREV(&d3) doesn't return &d2: got %p, expected %p", HLTQ_PREV(&d3, test_data, entries), &d2);
+	errors++;
+    }
+    ntests++;
+
+    /* Test conversion to TAILQ. */
+    HLTQ_TO_TAILQ(&tq, hltq, entries);
+
+    if (TAILQ_FIRST(&tq) != &d1) {
+	sudo_warnx_nodebug("FAIL: TAILQ_FIRST(&tq) doesn't return first element: got %p, expected %p", TAILQ_FIRST(&tq), &d1);
+	errors++;
+    }
+    ntests++;
+    if (TAILQ_LAST(&tq, test_data_list) != &d3) {
+	sudo_warnx_nodebug("FAIL: TAILQ_LAST(&tq) doesn't return third element: got %p, expected %p", TAILQ_LAST(&tq, test_data_list), &d3);
+	errors++;
+    }
+    ntests++;
+
+    if (TAILQ_NEXT(&d1, entries) != &d2) {
+	sudo_warnx_nodebug("FAIL: TAILQ_NEXT(&d1) doesn't return &d2: got %p, expected %p", TAILQ_NEXT(&d1, entries), &d2);
+	errors++;
+    }
+    ntests++;
+    if (TAILQ_NEXT(&d2, entries) != &d3) {
+	sudo_warnx_nodebug("FAIL: TAILQ_NEXT(&d2) doesn't return &d3: got %p, expected %p", TAILQ_NEXT(&d2, entries), &d3);
+	errors++;
+    }
+    ntests++;
+    if (TAILQ_NEXT(&d3, entries) != NULL) {
+	sudo_warnx_nodebug("FAIL: TAILQ_NEXT(&d3) doesn't return NULL: got %p", TAILQ_NEXT(&d3, entries));
+	errors++;
+    }
+    ntests++;
+
+    if (TAILQ_PREV(&d1, test_data_list, entries) != NULL) {
+	sudo_warnx_nodebug("FAIL: TAILQ_PREV(&d1) doesn't return NULL: got %p", TAILQ_PREV(&d1, test_data_list, entries));
+	errors++;
+    }
+    ntests++;
+    if (TAILQ_PREV(&d2, test_data_list, entries) != &d1) {
+	sudo_warnx_nodebug("FAIL: TAILQ_PREV(&d2) doesn't return &d1: got %p, expected %p", TAILQ_PREV(&d2, test_data_list, entries), &d1);
+	errors++;
+    }
+    ntests++;
+    if (TAILQ_PREV(&d3, test_data_list, entries) != &d2) {
+	sudo_warnx_nodebug("FAIL: TAILQ_PREV(&d3) doesn't return &d2: got %p, expected %p", TAILQ_PREV(&d3, test_data_list, entries), &d2);
+	errors++;
+    }
+    ntests++;
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+
+    exit(errors);
+}
diff --git a/lib/util/regress/uuid/uuid_test.c b/lib/util/regress/uuid/uuid_test.c
new file mode 100644
index 0000000..37ef417
--- /dev/null
+++ b/lib/util/regress/uuid/uuid_test.c
@@ -0,0 +1,105 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <string.h>
+#include <unistd.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include "sudo_compat.h"
+#include "sudo_fatal.h"
+#include "sudo_util.h"
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+/*
+ * Test that sudo_uuid_create() generates a variant 1, version 4 uuid.
+ */
+
+/* From RFC 4122. */
+struct uuid {
+    uint32_t time_low;
+    uint16_t time_mid;
+    uint16_t time_hi_and_version;
+    uint8_t clock_seq_hi_and_reserved;
+    uint8_t clock_seq_low;
+    uint8_t node[6];
+};
+
+int
+main(int argc, char *argv[])
+{
+    int ch, errors = 0, ntests = 0;
+    union {
+        struct uuid id;
+        unsigned char u8[16];
+    } uuid;
+
+    initprogname(argc > 0 ? argv[0] : "uuid_test");
+
+    while ((ch = getopt(argc, argv, "v")) != -1) {
+	switch (ch) {
+	case 'v':
+	    /* ignore */
+	    break;
+	default:
+	    fprintf(stderr, "usage: %s [-v]\n", getprogname());
+	    return EXIT_FAILURE;
+	}
+    }
+    argc -= optind;
+    argv += optind;
+
+    /* Do 16 passes. */
+    for (ntests = 0; ntests < 16; ntests++) {
+	sudo_uuid_create(uuid.u8);
+
+	/* Variant: two most significant bits (6 and 7) are 0 and 1. */
+	if (ISSET(uuid.id.clock_seq_hi_and_reserved, (1 << 6))) {
+	    sudo_warnx("uuid bit 6 set, should be clear");
+	    errors++;
+	    continue;
+	}
+	if (!ISSET(uuid.id.clock_seq_hi_and_reserved, (1 << 7))) {
+	    sudo_warnx("uuid bit 7 clear, should be set");
+	    errors++;
+	    continue;
+	}
+
+	/* Version: bits 12-15 are 0010. */
+	if ((uuid.id.time_hi_and_version & 0xf000) != 0x4000) {
+	    sudo_warnx("bad version: 0x%x", uuid.id.time_hi_and_version & 0xf000);
+	    errors++;
+	    continue;
+	}
+    }
+
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}
diff --git a/lib/util/roundup.c b/lib/util/roundup.c
new file mode 100644
index 0000000..0e7e8fd
--- /dev/null
+++ b/lib/util/roundup.c
@@ -0,0 +1,48 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * Round 32-bit unsigned length to the next highest power of two.
+ * Always returns at least 64.
+ * Algorithm from bit twiddling hacks.
+ */
+unsigned int
+sudo_pow2_roundup_v1(unsigned int len)
+{
+    if (len < 64)
+	return 64;
+    len--;
+    len |= len >> 1;
+    len |= len >> 2;
+    len |= len >> 4;
+    len |= len >> 8;
+    len |= len >> 16;
+    len++;
+    return len;
+}
diff --git a/lib/util/secure_path.c b/lib/util/secure_path.c
new file mode 100644
index 0000000..89d21de
--- /dev/null
+++ b/lib/util/secure_path.c
@@ -0,0 +1,145 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2012, 2014-2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_debug.h"
+
+/*
+ * Verify that path is the right type and not writable by other users.
+ */
+static int
+sudo_check_secure(struct stat *sb, unsigned int type, uid_t uid, gid_t gid)
+{
+    int ret = SUDO_PATH_SECURE;
+    debug_decl(sudo_check_secure, SUDO_DEBUG_UTIL);
+
+    if ((sb->st_mode & S_IFMT) != type) {
+	ret = SUDO_PATH_BAD_TYPE;
+    } else if (uid != (uid_t)-1 && sb->st_uid != uid) {
+	ret = SUDO_PATH_WRONG_OWNER;
+    } else if (sb->st_mode & S_IWOTH) {
+	ret = SUDO_PATH_WORLD_WRITABLE;
+    } else if (ISSET(sb->st_mode, S_IWGRP) &&
+	(gid == (gid_t)-1 || sb->st_gid != gid)) {
+	ret = SUDO_PATH_GROUP_WRITABLE;
+    }
+
+    debug_return_int(ret);
+}
+
+/*
+ * Verify that path is the right type and not writable by other users.
+ */
+static int
+sudo_secure_path(const char *path, unsigned int type, uid_t uid, gid_t gid,
+     struct stat *sb)
+{
+    int ret = SUDO_PATH_MISSING;
+    struct stat stat_buf;
+    debug_decl(sudo_secure_path, SUDO_DEBUG_UTIL);
+
+    if (sb == NULL)
+	sb = &stat_buf;
+
+    if (path != NULL && stat(path, sb) == 0)
+	ret = sudo_check_secure(sb, type, uid, gid);
+
+    debug_return_int(ret);
+}
+
+/*
+ * Verify that path is a regular file and not writable by other users.
+ * Not currently used.
+ */
+int
+sudo_secure_file_v1(const char *path, uid_t uid, gid_t gid, struct stat *sb)
+{
+    return sudo_secure_path(path, S_IFREG, uid, gid, sb);
+}
+
+/*
+ * Verify that path is a directory and not writable by other users.
+ */
+int
+sudo_secure_dir_v1(const char *path, uid_t uid, gid_t gid, struct stat *sb)
+{
+    return sudo_secure_path(path, S_IFDIR, uid, gid, sb);
+}
+
+/*
+ * Open path read-only as long as it is not writable by other users.
+ * Returns an open file descriptor on success, else -1.
+ * Sets error to SUDO_PATH_SECURE on success, and a value < 0 on failure.
+ */
+static int
+sudo_secure_open(const char *path, int type, uid_t uid, gid_t gid,
+    struct stat *sb, int *error)
+{
+    struct stat stat_buf;
+    int fd;
+    debug_decl(sudo_secure_open, SUDO_DEBUG_UTIL);
+
+    if (sb == NULL)
+	sb = &stat_buf;
+
+    fd = open(path, O_RDONLY|O_NONBLOCK);
+    if (fd == -1 || fstat(fd, sb) != 0) {
+	if (fd != -1)
+	    close(fd);
+	*error = SUDO_PATH_MISSING;
+	debug_return_int(-1);
+    }
+
+    *error = sudo_check_secure(sb, type, uid, gid);
+    if (*error == SUDO_PATH_SECURE) {
+	(void)fcntl(fd, F_SETFL, fcntl(fd, F_GETFL, 0) & ~O_NONBLOCK);
+    } else {
+	/* Not secure, caller can check error flag. */
+	close(fd);
+	fd = -1;
+    }
+
+    debug_return_int(fd);
+}
+
+int
+sudo_secure_open_file_v1(const char *path, uid_t uid, gid_t gid,
+    struct stat *sb, int *error)
+{
+    return sudo_secure_open(path, S_IFREG, uid, gid, sb, error);
+}
+
+int
+sudo_secure_open_dir_v1(const char *path, uid_t uid, gid_t gid,
+    struct stat *sb, int *error)
+{
+    return sudo_secure_open(path, S_IFDIR, uid, gid, sb, error);
+}
diff --git a/lib/util/setgroups.c b/lib/util/setgroups.c
new file mode 100644
index 0000000..f424ddb
--- /dev/null
+++ b/lib/util/setgroups.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2012, 2014-2016 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <grp.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+int
+sudo_setgroups_v1(int ngids, const GETGROUPS_T *gids)
+{
+    int maxgids, ret;
+    debug_decl(sudo_setgroups, SUDO_DEBUG_UTIL);
+
+    ret = setgroups(ngids, (GETGROUPS_T *)gids);
+    if (ret == -1 && errno == EINVAL) {
+	/* Too many groups, try again with fewer. */
+	maxgids = (int)sysconf(_SC_NGROUPS_MAX);
+	if (maxgids == -1)
+	    maxgids = NGROUPS_MAX;
+	if (ngids > maxgids)
+	    ret = setgroups(maxgids, (GETGROUPS_T *)gids);
+    }
+    debug_return_int(ret);
+}
diff --git a/lib/util/sha2.c b/lib/util/sha2.c
new file mode 100644
index 0000000..a9e3857
--- /dev/null
+++ b/lib/util/sha2.c
@@ -0,0 +1,515 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+/*
+ * Implementation of SHA-224, SHA-256, SHA-384 and SHA-512
+ * as per FIPS 180-4: Secure Hash Standard (SHS)
+ * http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
+ *
+ * Derived from the public domain SHA-1 and SHA-2 implementations
+ * by Steve Reid and Wei Dai respectively.
+ */
+
+#include <config.h>
+#include <string.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#if defined(HAVE_ENDIAN_H)
+# include <endian.h>
+#elif defined(HAVE_SYS_ENDIAN_H)
+# include <sys/endian.h>
+#elif defined(HAVE_MACHINE_ENDIAN_H)
+# include <machine/endian.h>
+#else
+# include "compat/endian.h"
+#endif
+
+#include "sudo_compat.h"
+#include "compat/sha2.h"
+
+/*
+ * SHA-2 operates on 32-bit and 64-bit words in big endian byte order.
+ * The following macros convert between character arrays and big endian words.
+ */
+#define BE8TO32(x, y) do {				\
+	(x) = (((uint32_t)((y)[0] & 255) << 24) |	\
+	       ((uint32_t)((y)[1] & 255) << 16) |	\
+	       ((uint32_t)((y)[2] & 255) << 8)  |	\
+	       ((uint32_t)((y)[3] & 255)));		\
+} while (0)
+
+#define BE8TO64(x, y) do {				\
+	(x) = (((uint64_t)((y)[0] & 255) << 56) |	\
+	       ((uint64_t)((y)[1] & 255) << 48) |	\
+	       ((uint64_t)((y)[2] & 255) << 40) |	\
+	       ((uint64_t)((y)[3] & 255) << 32) |	\
+	       ((uint64_t)((y)[4] & 255) << 24) |	\
+	       ((uint64_t)((y)[5] & 255) << 16) |	\
+	       ((uint64_t)((y)[6] & 255) << 8)  |	\
+	       ((uint64_t)((y)[7] & 255)));		\
+} while (0)
+
+#define BE32TO8(x, y) do {			\
+	(x)[0] = (uint8_t)(((y) >> 24) & 255);	\
+	(x)[1] = (uint8_t)(((y) >> 16) & 255);	\
+	(x)[2] = (uint8_t)(((y) >> 8) & 255);	\
+	(x)[3] = (uint8_t)((y) & 255);		\
+} while (0)
+
+#define BE64TO8(x, y) do {			\
+	(x)[0] = (uint8_t)(((y) >> 56) & 255);	\
+	(x)[1] = (uint8_t)(((y) >> 48) & 255);	\
+	(x)[2] = (uint8_t)(((y) >> 40) & 255);	\
+	(x)[3] = (uint8_t)(((y) >> 32) & 255);	\
+	(x)[4] = (uint8_t)(((y) >> 24) & 255);	\
+	(x)[5] = (uint8_t)(((y) >> 16) & 255);	\
+	(x)[6] = (uint8_t)(((y) >> 8) & 255);	\
+	(x)[7] = (uint8_t)((y) & 255);		\
+} while (0)
+
+#define rotrFixed(x,y) (y ? ((x>>y) | (x<<(sizeof(x)*8-y))) : x)
+
+#define blk0(i) (W[i])
+#define blk2(i) (W[i&15]+=s1(W[(i-2)&15])+W[(i-7)&15]+s0(W[(i-15)&15]))
+
+#define Ch(x,y,z) (z^(x&(y^z)))
+#define Maj(x,y,z) (y^((x^y)&(y^z)))
+
+#define a(i) T[(0-i)&7]
+#define b(i) T[(1-i)&7]
+#define c(i) T[(2-i)&7]
+#define d(i) T[(3-i)&7]
+#define e(i) T[(4-i)&7]
+#define f(i) T[(5-i)&7]
+#define g(i) T[(6-i)&7]
+#define h(i) T[(7-i)&7]
+
+void
+SHA224Init(SHA2_CTX *ctx)
+{
+	memset(ctx, 0, sizeof(*ctx));
+	ctx->state.st32[0] = 0xc1059ed8UL;
+	ctx->state.st32[1] = 0x367cd507UL;
+	ctx->state.st32[2] = 0x3070dd17UL;
+	ctx->state.st32[3] = 0xf70e5939UL;
+	ctx->state.st32[4] = 0xffc00b31UL;
+	ctx->state.st32[5] = 0x68581511UL;
+	ctx->state.st32[6] = 0x64f98fa7UL;
+	ctx->state.st32[7] = 0xbefa4fa4UL;
+}
+
+void
+SHA224Transform(uint32_t state[8], const uint8_t buffer[SHA224_BLOCK_LENGTH])
+{
+	SHA256Transform(state, buffer);
+}
+
+void
+SHA224Update(SHA2_CTX *ctx, const uint8_t *data, size_t len)
+{
+	SHA256Update(ctx, data, len);
+}
+
+void
+SHA224Pad(SHA2_CTX *ctx)
+{
+	SHA256Pad(ctx);
+}
+
+void
+SHA224Final(uint8_t digest[SHA224_DIGEST_LENGTH], SHA2_CTX *ctx)
+{
+	SHA256Pad(ctx);
+	if (digest != NULL) {
+#if BYTE_ORDER == BIG_ENDIAN
+		memcpy(digest, ctx->state.st32, SHA224_DIGEST_LENGTH);
+#else
+		unsigned int i;
+
+		for (i = 0; i < 7; i++)
+			BE32TO8(digest + (i * 4), ctx->state.st32[i]);
+#endif
+		memset(ctx, 0, sizeof(*ctx));
+	}
+}
+
+static const uint32_t SHA256_K[64] = {
+	0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
+	0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
+	0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
+	0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
+	0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+	0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
+	0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
+	0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
+	0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
+	0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+	0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
+	0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
+	0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
+	0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
+	0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+	0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+};
+
+void
+SHA256Init(SHA2_CTX *ctx)
+{
+	memset(ctx, 0, sizeof(*ctx));
+	ctx->state.st32[0] = 0x6a09e667UL;
+	ctx->state.st32[1] = 0xbb67ae85UL;
+	ctx->state.st32[2] = 0x3c6ef372UL;
+	ctx->state.st32[3] = 0xa54ff53aUL;
+	ctx->state.st32[4] = 0x510e527fUL;
+	ctx->state.st32[5] = 0x9b05688cUL;
+	ctx->state.st32[6] = 0x1f83d9abUL;
+	ctx->state.st32[7] = 0x5be0cd19UL;
+}
+
+/* Round macros for SHA256 */
+#define R(i) do {							     \
+	h(i)+=S1(e(i))+Ch(e(i),f(i),g(i))+SHA256_K[i+j]+(j?blk2(i):blk0(i)); \
+	d(i)+=h(i);							     \
+	h(i)+=S0(a(i))+Maj(a(i),b(i),c(i));				     \
+} while (0)
+
+#define S0(x) (rotrFixed(x,2)^rotrFixed(x,13)^rotrFixed(x,22))
+#define S1(x) (rotrFixed(x,6)^rotrFixed(x,11)^rotrFixed(x,25))
+#define s0(x) (rotrFixed(x,7)^rotrFixed(x,18)^(x>>3))
+#define s1(x) (rotrFixed(x,17)^rotrFixed(x,19)^(x>>10))
+
+void
+SHA256Transform(uint32_t state[8], const uint8_t data[SHA256_BLOCK_LENGTH])
+{
+	uint32_t W[16];
+	uint32_t T[8];
+	unsigned int j;
+
+	/* Copy context state to working vars. */
+	memcpy(T, state, sizeof(T));
+	/* Copy data to W in big endian format. */
+#if BYTE_ORDER == BIG_ENDIAN
+	memcpy(W, data, sizeof(W));
+#else
+	for (j = 0; j < 16; j++) {
+	    BE8TO32(W[j], data);
+	    data += 4;
+	}
+#endif
+	/* 64 operations, partially loop unrolled. */
+	for (j = 0; j < 64; j += 16)
+	{
+		R( 0); R( 1); R( 2); R( 3);
+		R( 4); R( 5); R( 6); R( 7);
+		R( 8); R( 9); R(10); R(11);
+		R(12); R(13); R(14); R(15);
+	}
+	/* Add the working vars back into context state. */
+	state[0] += a(0);
+	state[1] += b(0);
+	state[2] += c(0);
+	state[3] += d(0);
+	state[4] += e(0);
+	state[5] += f(0);
+	state[6] += g(0);
+	state[7] += h(0);
+	/* Cleanup */
+	explicit_bzero(T, sizeof(T));
+	explicit_bzero(W, sizeof(W));
+}
+
+#undef S0
+#undef S1
+#undef s0
+#undef s1
+#undef R
+
+void
+SHA256Update(SHA2_CTX *ctx, const uint8_t *data, size_t len)
+{
+	size_t i = 0, j;
+
+	j = (size_t)((ctx->count[0] >> 3) & (SHA256_BLOCK_LENGTH - 1));
+	ctx->count[0] += ((uint64_t)len << 3);
+	if ((j + len) > SHA256_BLOCK_LENGTH - 1) {
+		memcpy(&ctx->buffer[j], data, (i = SHA256_BLOCK_LENGTH - j));
+		SHA256Transform(ctx->state.st32, ctx->buffer);
+		for ( ; i + SHA256_BLOCK_LENGTH - 1 < len; i += SHA256_BLOCK_LENGTH)
+			SHA256Transform(ctx->state.st32, (uint8_t *)&data[i]);
+		j = 0;
+	}
+	memcpy(&ctx->buffer[j], &data[i], len - i);
+}
+
+void
+SHA256Pad(SHA2_CTX *ctx)
+{
+	uint8_t finalcount[8];
+
+	/* Store unpadded message length in bits in big endian format. */
+	BE64TO8(finalcount, ctx->count[0]);
+
+	/* Append a '1' bit (0x80) to the message. */
+	SHA256Update(ctx, (uint8_t *)"\200", 1);
+
+	/* Pad message such that the resulting length modulo 512 is 448. */
+	while ((ctx->count[0] & 511) != 448)
+		SHA256Update(ctx, (uint8_t *)"\0", 1);
+
+	/* Append length of message in bits and do final SHA256Transform(). */
+	SHA256Update(ctx, finalcount, sizeof(finalcount));
+}
+
+void
+SHA256Final(uint8_t digest[SHA256_DIGEST_LENGTH], SHA2_CTX *ctx)
+{
+	SHA256Pad(ctx);
+	if (digest != NULL) {
+#if BYTE_ORDER == BIG_ENDIAN
+		memcpy(digest, ctx->state.st32, SHA256_DIGEST_LENGTH);
+#else
+		unsigned int i;
+
+		for (i = 0; i < 8; i++)
+			BE32TO8(digest + (i * 4), ctx->state.st32[i]);
+#endif
+		memset(ctx, 0, sizeof(*ctx));
+	}
+}
+
+void
+SHA384Init(SHA2_CTX *ctx)
+{
+	memset(ctx, 0, sizeof(*ctx));
+	ctx->state.st64[0] = 0xcbbb9d5dc1059ed8ULL;
+	ctx->state.st64[1] = 0x629a292a367cd507ULL;
+	ctx->state.st64[2] = 0x9159015a3070dd17ULL;
+	ctx->state.st64[3] = 0x152fecd8f70e5939ULL;
+	ctx->state.st64[4] = 0x67332667ffc00b31ULL;
+	ctx->state.st64[5] = 0x8eb44a8768581511ULL;
+	ctx->state.st64[6] = 0xdb0c2e0d64f98fa7ULL;
+	ctx->state.st64[7] = 0x47b5481dbefa4fa4ULL;
+}
+
+void
+SHA384Transform(uint64_t state[8], const uint8_t data[SHA384_BLOCK_LENGTH])
+{
+	SHA512Transform(state, data);
+}
+
+void
+SHA384Update(SHA2_CTX *ctx, const uint8_t *data, size_t len)
+{
+	SHA512Update(ctx, data, len);
+}
+
+void
+SHA384Pad(SHA2_CTX *ctx)
+{
+	SHA512Pad(ctx);
+}
+
+void
+SHA384Final(uint8_t digest[SHA384_DIGEST_LENGTH], SHA2_CTX *ctx)
+{
+	SHA384Pad(ctx);
+	if (digest != NULL) {
+#if BYTE_ORDER == BIG_ENDIAN
+		memcpy(digest, ctx->state.st64, SHA384_DIGEST_LENGTH);
+#else
+		unsigned int i;
+
+		for (i = 0; i < 6; i++)
+			BE64TO8(digest + (i * 8), ctx->state.st64[i]);
+#endif
+		memset(ctx, 0, sizeof(*ctx));
+	}
+}
+
+static const uint64_t SHA512_K[80] = {
+	0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
+	0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
+	0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+	0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
+	0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
+	0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+	0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
+	0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
+	0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+	0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
+	0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
+	0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+	0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
+	0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
+	0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+	0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
+	0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
+	0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+	0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
+	0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
+	0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+	0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
+	0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
+	0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+	0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
+	0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
+	0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+	0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
+	0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
+	0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+	0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
+	0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
+	0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+	0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
+	0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
+	0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+	0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
+	0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
+	0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+	0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
+};
+
+void
+SHA512Init(SHA2_CTX *ctx)
+{
+	memset(ctx, 0, sizeof(*ctx));
+	ctx->state.st64[0] = 0x6a09e667f3bcc908ULL;
+	ctx->state.st64[1] = 0xbb67ae8584caa73bULL;
+	ctx->state.st64[2] = 0x3c6ef372fe94f82bULL;
+	ctx->state.st64[3] = 0xa54ff53a5f1d36f1ULL;
+	ctx->state.st64[4] = 0x510e527fade682d1ULL;
+	ctx->state.st64[5] = 0x9b05688c2b3e6c1fULL;
+	ctx->state.st64[6] = 0x1f83d9abfb41bd6bULL;
+	ctx->state.st64[7] = 0x5be0cd19137e2179ULL;
+}
+
+/* Round macros for SHA512 */
+#define R(i) do {							     \
+	h(i)+=S1(e(i))+Ch(e(i),f(i),g(i))+SHA512_K[i+j]+(j?blk2(i):blk0(i)); \
+	d(i)+=h(i);							     \
+	h(i)+=S0(a(i))+Maj(a(i),b(i),c(i));				     \
+} while (0)
+
+#define S0(x) (rotrFixed(x,28)^rotrFixed(x,34)^rotrFixed(x,39))
+#define S1(x) (rotrFixed(x,14)^rotrFixed(x,18)^rotrFixed(x,41))
+#define s0(x) (rotrFixed(x,1)^rotrFixed(x,8)^(x>>7))
+#define s1(x) (rotrFixed(x,19)^rotrFixed(x,61)^(x>>6))
+
+void
+SHA512Transform(uint64_t state[8], const uint8_t data[SHA512_BLOCK_LENGTH])
+{
+	uint64_t W[16];
+	uint64_t T[8];
+	unsigned int j;
+
+	/* Copy context state to working vars. */
+	memcpy(T, state, sizeof(T));
+	/* Copy data to W in big endian format. */
+#if BYTE_ORDER == BIG_ENDIAN
+	memcpy(W, data, sizeof(W));
+#else
+	for (j = 0; j < 16; j++) {
+	    BE8TO64(W[j], data);
+	    data += 8;
+	}
+#endif
+	/* 80 operations, partially loop unrolled. */
+	for (j = 0; j < 80; j += 16)
+	{
+		R( 0); R( 1); R( 2); R( 3);
+		R( 4); R( 5); R( 6); R( 7);
+		R( 8); R( 9); R(10); R(11);
+		R(12); R(13); R(14); R(15);
+	}
+	/* Add the working vars back into context state. */
+	state[0] += a(0);
+	state[1] += b(0);
+	state[2] += c(0);
+	state[3] += d(0);
+	state[4] += e(0);
+	state[5] += f(0);
+	state[6] += g(0);
+	state[7] += h(0);
+	/* Cleanup. */
+	explicit_bzero(T, sizeof(T));
+	explicit_bzero(W, sizeof(W));
+}
+
+void
+SHA512Update(SHA2_CTX *ctx, const uint8_t *data, size_t len)
+{
+	size_t i = 0, j;
+
+	j = (size_t)((ctx->count[0] >> 3) & (SHA512_BLOCK_LENGTH - 1));
+	ctx->count[0] += ((uint64_t)len << 3);
+	if (ctx->count[0] < ((uint64_t)len << 3))
+		ctx->count[1]++;
+	if ((j + len) > SHA512_BLOCK_LENGTH - 1) {
+		memcpy(&ctx->buffer[j], data, (i = SHA512_BLOCK_LENGTH - j));
+		SHA512Transform(ctx->state.st64, ctx->buffer);
+		for ( ; i + SHA512_BLOCK_LENGTH - 1 < len; i += SHA512_BLOCK_LENGTH)
+			SHA512Transform(ctx->state.st64, (uint8_t *)&data[i]);
+		j = 0;
+	}
+	memcpy(&ctx->buffer[j], &data[i], len - i);
+}
+
+void
+SHA512Pad(SHA2_CTX *ctx)
+{
+	uint8_t finalcount[16];
+
+	/* Store unpadded message length in bits in big endian format. */
+	BE64TO8(finalcount, ctx->count[1]);
+	BE64TO8(finalcount + 8, ctx->count[0]);
+
+	/* Append a '1' bit (0x80) to the message. */
+	SHA512Update(ctx, (uint8_t *)"\200", 1);
+
+	/* Pad message such that the resulting length modulo 1024 is 896. */
+	while ((ctx->count[0] & 1023) != 896)
+		SHA512Update(ctx, (uint8_t *)"\0", 1);
+
+	/* Append length of message in bits and do final SHA512Transform(). */
+	SHA512Update(ctx, finalcount, sizeof(finalcount));
+}
+
+void
+SHA512Final(uint8_t digest[SHA512_DIGEST_LENGTH], SHA2_CTX *ctx)
+{
+	SHA512Pad(ctx);
+	if (digest != NULL) {
+#if BYTE_ORDER == BIG_ENDIAN
+		memcpy(digest, ctx->state.st64, SHA512_DIGEST_LENGTH);
+#else
+		unsigned int i;
+
+		for (i = 0; i < 8; i++)
+			BE64TO8(digest + (i * 8), ctx->state.st64[i]);
+#endif
+		memset(ctx, 0, sizeof(*ctx));
+	}
+}
diff --git a/lib/util/sig2str.c b/lib/util/sig2str.c
new file mode 100644
index 0000000..1d86021
--- /dev/null
+++ b/lib/util/sig2str.c
@@ -0,0 +1,100 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2012-2015, 2017-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_SIG2STR
+
+#include <errno.h>
+#include <string.h>
+#include <ctype.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+#if !defined(HAVE_SIGABBREV_NP)
+# if defined(HAVE_DECL_SYS_SIGNAME) && HAVE_DECL_SYS_SIGNAME == 1
+#   define sigabbrev_np(_x)	sys_signame[(_x)]
+# elif defined(HAVE_DECL__SYS_SIGNAME) && HAVE_DECL__SYS_SIGNAME == 1
+#   define sigabbrev_np(_x)	_sys_signame[(_x)]
+# elif defined(HAVE_SYS_SIGABBREV)
+#   define sigabbrev_np(_x)	sys_sigabbrev[(_x)]
+#  if defined(HAVE_DECL_SYS_SIGABBREV) && HAVE_DECL_SYS_SIGABBREV == 0
+    /* sys_sigabbrev is not declared by glibc */
+    extern const char *const sys_sigabbrev[NSIG];
+#  endif
+# else
+#   define sigabbrev_np(_x)	sudo_sys_signame[(_x)]
+    extern const char *const sudo_sys_signame[NSIG];
+# endif
+#endif /* !HAVE_SIGABBREV_NP */
+
+/*
+ * Translate signal number to name.
+ */
+int
+sudo_sig2str(int signo, char *signame)
+{
+#if defined(SIGRTMIN) && defined(SIGRTMAX)
+    /* Realtime signal support. */
+    if (signo >= SIGRTMIN && signo <= SIGRTMAX) {
+# ifdef _SC_RTSIG_MAX
+	const long rtmax = sysconf(_SC_RTSIG_MAX);
+# else
+	const long rtmax = SIGRTMAX - SIGRTMIN;
+# endif
+	if (rtmax > 0) {
+	    if (signo == SIGRTMIN) {
+		strlcpy(signame, "RTMIN", SIG2STR_MAX);
+	    } else if (signo == SIGRTMAX) {
+		strlcpy(signame, "RTMAX", SIG2STR_MAX);
+	    } else if (signo <= SIGRTMIN + (rtmax / 2) - 1) {
+		(void)snprintf(signame, SIG2STR_MAX, "RTMIN+%d",
+		    (signo - SIGRTMIN));
+	    } else {
+		(void)snprintf(signame, SIG2STR_MAX, "RTMAX-%d",
+		    (SIGRTMAX - signo));
+	    }
+	}
+	return 0;
+    }
+#endif
+    if (signo > 0 && signo < NSIG) {
+	const char *cp = sigabbrev_np(signo);
+	if (cp != NULL) {
+	    strlcpy(signame, cp, SIG2STR_MAX);
+	    /* Make sure we always return an upper case signame. */
+	    if (islower((unsigned char)signame[0])) {
+		int i;
+		for (i = 0; signame[i] != '\0'; i++)
+		    signame[i] = toupper((unsigned char)signame[i]);
+	    }
+	    return 0;
+	}
+    }
+    errno = EINVAL;
+    return -1;
+}
+#endif /* HAVE_SIG2STR */
diff --git a/lib/util/siglist.in b/lib/util/siglist.in
new file mode 100644
index 0000000..aa57a7a
--- /dev/null
+++ b/lib/util/siglist.in
@@ -0,0 +1,56 @@
+#
+# List of signals used to build sys_siglist (see mksiglist.c)
+# Adapted from pdksh; public domain
+#
+# Note that if a system has multiple defines for the same signal
+# (eg, SIGABRT vs SIGIOT, SIGCHLD vs SIGCLD), only the first one
+# will be seen, so the order in this list is important.
+#
+    HUP     Hangup
+    INT     Interrupt
+    QUIT    Quit
+    ILL     Illegal instruction
+    TRAP    Trace trap
+# before IOT (ABRT is posix and ABRT is sometimes the same as IOT)
+    ABRT    Abort
+    IOT     IOT instruction
+    EMT     EMT trap
+    FPE     Floating point exception
+    KILL    Killed
+    BUS     Bus error
+    SEGV    Memory fault
+# before UNUSED (SYS and UNUSED share the same value in musl libc).
+    SYS     Bad system call
+    UNUSED  Unused
+    PIPE    Broken pipe
+    ALRM    Alarm clock
+    TERM    Terminated
+    STKFLT  Stack fault
+# before POLL (POLL is sometimes the same as IO)
+    IO      I/O possible
+    XCPU    CPU time limit exceeded
+    XFSZ    File size limit exceeded
+    VTALRM  Virtual timer expired
+    PROF    Profiling timer expired
+    WINCH   Window size change
+    LOST    File lock lost
+    USR1    User defined signal 1
+    USR2    User defined signal 2
+    PWR     Power-fail/Restart
+    POLL    Pollable event occurred
+    STOP    Stopped (signal)
+    TSTP    Stopped
+    CONT    Continued
+# before CLD (CHLD is posix and CHLD is sometimes the same as CLD)
+    CHLD    Child exited
+    CLD     Child exited
+    TTIN    Stopped (tty input)
+    TTOU    Stopped (tty output)
+    INFO    Information request
+    URG     Urgent I/O condition
+# Solaris (svr4?) signals
+    WAITING No runnable LWPs
+    LWP	    Inter-LWP signal
+    FREEZE  Checkpoint freeze
+    THAW    Checkpoint thaw
+    CANCEL  Thread cancellation
diff --git a/lib/util/snprintf.c b/lib/util/snprintf.c
new file mode 100644
index 0000000..8c75ba5
--- /dev/null
+++ b/lib/util/snprintf.c
@@ -0,0 +1,1549 @@
+/*	$OpenBSD: vfprintf.c,v 1.67 2014/12/21 00:23:30 daniel Exp $	*/
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1999-2005, 2008, 2010-2016
+ *      Todd C. Miller <Todd.Miller@sudo.ws>
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * From: @(#)vfprintf.c 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * v?snprintf/v?asprintf based on OpenBSD vfprintf.c.
+ */
+
+#include <config.h>
+
+#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_SNPRINTF) || \
+    !defined(HAVE_VASPRINTF) || !defined(HAVE_ASPRINTF) || \
+    defined(PREFER_PORTABLE_SNPRINTF)
+
+#include <errno.h>
+#ifdef HAVE_NL_LANGINFO
+# include <langinfo.h>
+#endif
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stddef.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef PRINTF_WIDE_CHAR
+# include <wchar.h>
+#endif
+#include <fcntl.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+/* Avoid printf format attacks by ignoring the %n escape. */
+#define NO_PRINTF_PERCENT_N
+
+union arg {
+	int			intarg;
+	unsigned int		uintarg;
+	long			longarg;
+	unsigned long		ulongarg;
+	long long		longlongarg;
+	unsigned long long	ulonglongarg;
+	ptrdiff_t		ptrdiffarg;
+	size_t			sizearg;
+	ssize_t			ssizearg;
+	intmax_t		intmaxarg;
+	uintmax_t		uintmaxarg;
+	void			*pvoidarg;
+	char			*pchararg;
+	signed char		*pschararg;
+	short			*pshortarg;
+	int			*pintarg;
+	long			*plongarg;
+	long long		*plonglongarg;
+	ptrdiff_t		*pptrdiffarg;
+	ssize_t			*pssizearg;
+	intmax_t		*pintmaxarg;
+#ifdef FLOATING_POINT
+	double			doublearg;
+	long double		longdoublearg;
+#endif
+#ifdef PRINTF_WIDE_CHAR
+	wint_t			wintarg;
+	wchar_t			*pwchararg;
+#endif
+};
+
+static int __find_arguments(const char *fmt0, va_list ap, union arg **argtable);
+static int __grow_type_table(unsigned char **typetable, int *tablesize);
+static int xxxprintf(char **, size_t, int, const char *, va_list);
+
+#ifdef PRINTF_WIDE_CHAR
+/*
+ * Convert a wide character string argument for the %ls format to a multibyte
+ * string representation. If not -1, prec specifies the maximum number of
+ * bytes to output, and also means that we can't assume that the wide char
+ * string is null-terminated.
+ */
+static char *
+__wcsconv(wchar_t *wcsarg, int prec)
+{
+	mbstate_t mbs;
+	char buf[MB_LEN_MAX];
+	wchar_t *p;
+	char *convbuf;
+	size_t clen, nbytes;
+
+	/* Allocate space for the maximum number of bytes we could output. */
+	if (prec < 0) {
+		memset(&mbs, 0, sizeof(mbs));
+		p = wcsarg;
+		nbytes = wcsrtombs(NULL, (const wchar_t **)&p, 0, &mbs);
+		if (nbytes == (size_t)-1)
+			return NULL;
+	} else {
+		/*
+		 * Optimisation: if the output precision is small enough,
+		 * just allocate enough memory for the maximum instead of
+		 * scanning the string.
+		 */
+		if (prec < 128)
+			nbytes = prec;
+		else {
+			nbytes = 0;
+			p = wcsarg;
+			memset(&mbs, 0, sizeof(mbs));
+			for (;;) {
+				clen = wcrtomb(buf, *p++, &mbs);
+				if (clen == 0 || clen == (size_t)-1 ||
+				    nbytes + clen > (size_t)prec)
+					break;
+				nbytes += clen;
+			}
+			if (clen == (size_t)-1)
+				return NULL;
+		}
+	}
+	if ((convbuf = malloc(nbytes + 1)) == NULL)
+		return NULL;
+
+	/* Fill the output buffer. */
+	p = wcsarg;
+	memset(&mbs, 0, sizeof(mbs));
+	if ((nbytes = wcsrtombs(convbuf, (const wchar_t **)&p,
+	    nbytes, &mbs)) == (size_t)-1) {
+		free(convbuf);
+		return NULL;
+	}
+	convbuf[nbytes] = '\0';
+	return convbuf;
+}
+#endif
+
+#ifdef FLOATING_POINT
+#include <float.h>
+#include <locale.h>
+#include <math.h>
+#include "floatio.h"
+#include "gdtoa.h"
+
+#define	DEFPREC		6
+
+static int exponent(char *, int, int);
+#endif /* FLOATING_POINT */
+
+/*
+ * The size of the buffer we use as scratch space for integer
+ * conversions, among other things.  Technically, we would need the
+ * most space for base 10 conversions with thousands' grouping
+ * characters between each pair of digits.  100 bytes is a
+ * conservative overestimate even for a 128-bit uintmax_t.
+ */
+#define BUF	100
+
+#define STATIC_ARG_TBL_SIZE 8	/* Size of static argument table. */
+
+
+/*
+ * Macros for converting digits to letters and vice versa
+ */
+#define	to_digit(c)	((c) - '0')
+#define is_digit(c)	((unsigned int)to_digit(c) <= 9)
+#define	to_char(n)	((n) + '0')
+
+/*
+ * Flags used during conversion.
+ */
+#define	ALT		0x0001		/* alternate form */
+#define	LADJUST		0x0004		/* left adjustment */
+#define	LONGDBL		0x0008		/* long double */
+#define	LONGINT		0x0010		/* long integer */
+#define	LLONGINT	0x0020		/* long long integer */
+#define	SHORTINT	0x0040		/* short integer */
+#define	ZEROPAD		0x0080		/* zero (as opposed to blank) pad */
+#define FPT		0x0100		/* Floating point number */
+#define PTRINT		0x0200		/* (unsigned) ptrdiff_t */
+#define SIZEINT		0x0400		/* (signed) size_t */
+#define CHARINT		0x0800		/* 8 bit integer */
+#undef	MAXINT				/* Also defined by HP-UX param.h... */
+#define MAXINT		0x1000		/* largest integer size (intmax_t) */
+
+/*
+ * Actual printf innards.
+  */
+static int
+xxxprintf(char **strp, size_t strsize, int alloc, const char *fmt0, va_list ap)
+{
+	char *fmt;		/* format string */
+	int ch;			/* character from fmt */
+	int n;			/* handy integers (short term usage) */
+	char *cp;		/* handy char pointer (short term usage) */
+	int flags;		/* flags as above */
+	int ret;		/* return value accumulator */
+	int width;		/* width from format (%8d), or 0 */
+	int prec;		/* precision from format; <0 for N/A */
+	char sign;		/* sign prefix (' ', '+', '-', or \0) */
+#ifdef FLOATING_POINT
+	/*
+	 * We can decompose the printed representation of floating
+	 * point numbers into several parts, some of which may be empty:
+	 *
+	 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ
+	 *    A       B     ---C---      D       E   F
+	 *
+	 * A:	'sign' holds this value if present; '\0' otherwise
+	 * B:	ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal
+	 * C:	cp points to the string MMMNNN.  Leading and trailing
+	 *	zeros are not in the string and must be added.
+	 * D:	expchar holds this character; '\0' if no exponent, e.g. %f
+	 * F:	at least two digits for decimal, at least one digit for hex
+	 */
+#ifdef HAVE_NL_LANGINFO
+	const char *decimal_point = NULL;
+#else
+	const char *decimal_point = ".";
+#endif
+	int signflag;		/* true if float is negative */
+	union {			/* floating point arguments %[aAeEfFgG] */
+		double dbl;
+		long double ldbl;
+	} fparg;
+	int expt;		/* integer value of exponent */
+	char expchar;		/* exponent character: [eEpP\0] */
+	char *dtoaend;		/* pointer to end of converted digits */
+	int expsize;		/* character count for expstr */
+	int lead;		/* sig figs before decimal or group sep */
+	int ndig;		/* actual number of digits returned by dtoa */
+	char expstr[MAXEXPDIG+2];	/* buffer for exponent string: e+ZZZ */
+	char *dtoaresult = NULL;
+#endif
+
+	uintmax_t _umax;	/* integer arguments %[diouxX] */
+	enum { OCT, DEC, HEX } base;	/* base for %[diouxX] conversion */
+	int dprec;		/* a copy of prec if %[diouxX], 0 otherwise */
+	int realsz;		/* field size expanded by dprec */
+	int size;		/* size of converted field or string */
+	const char *xdigs = "";	/* digits for %[xX] conversion */
+#define NIOV 8
+	char buf[BUF];		/* buffer with space for digits of uintmax_t */
+	char ox[2];		/* space for 0x; ox[1] is either x, X, or \0 */
+	char *str;		/* pointer to string to fill */
+	char *estr;		/* pointer to last char in str */
+	union arg *argtable;	/* args, built due to positional arg */
+	union arg statargtable[STATIC_ARG_TBL_SIZE];
+	int nextarg;		/* 1-based argument index */
+	va_list orgap;		/* original argument pointer */
+#ifdef PRINTF_WIDE_CHAR
+	char *convbuf;		/* buffer for wide to multi-byte conversion */
+#endif
+
+	/*
+	 * Choose PADSIZE to trade efficiency vs. size.  If larger printf
+	 * fields occur frequently, increase PADSIZE and make the initialisers
+	 * below longer.
+	 */
+#define	PADSIZE	16		/* pad chunk size */
+	static char blanks[PADSIZE] =
+	 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
+	static char zeroes[PADSIZE] =
+	 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
+
+	static const char xdigs_lower[16] = "0123456789abcdef";
+	static const char xdigs_upper[16] = "0123456789ABCDEF";
+
+	/*
+	 * BEWARE, these `goto done' on error, and PAD uses `n'.
+	 */
+	/* Print chars to "str", (allocate as needed if alloc is set). */
+#define	PRINT(ptr, len) do { \
+	const char *p = ptr; \
+	const char *endp = ptr + len; \
+	while (p < endp && (str < estr || alloc)) { \
+		if (alloc && str >= estr) { \
+			char *t; \
+			strsize = (strsize << 1) + 1; \
+			if (!(t = realloc(*strp, strsize))) { \
+				free(str); \
+				*strp = NULL; \
+				ret = -1; \
+				goto done; \
+			} \
+			str = t + (str - *strp); \
+			estr = t + strsize - 1; \
+			*strp = t; \
+		} \
+		*str++ = *p++; \
+	} \
+} while (0)
+
+#define	PAD(plen, pstr) do { \
+	if ((n = (plen)) > 0) { \
+		while (n > PADSIZE) { \
+			PRINT(pstr, PADSIZE); \
+			n -= PADSIZE; \
+		} \
+		PRINT(pstr, n); \
+	} \
+} while (0)
+#define	PRINTANDPAD(p, ep, len, with) do {	\
+	int n2 = (ep) - (p);			\
+	if (n2 > (len))				\
+		n2 = (len);			\
+	if (n2 > 0)				\
+		PRINT((p), n2);			\
+	PAD((len) - (n2 > 0 ? n2 : 0), (with));	\
+} while(0)
+
+	/*
+	 * To extend shorts properly, we need both signed and unsigned
+	 * argument extraction methods.
+	 */
+#define	SARG() \
+	((intmax_t)(flags&MAXINT ? GETARG(intmax_t) : \
+	    flags&LLONGINT ? GETARG(long long) : \
+	    flags&LONGINT ? GETARG(long) : \
+	    flags&PTRINT ? GETARG(ptrdiff_t) : \
+	    flags&SIZEINT ? GETARG(ssize_t) : \
+	    flags&SHORTINT ? (short)GETARG(int) : \
+	    flags&CHARINT ? (signed char)GETARG(int) : \
+	    GETARG(int)))
+#define	UARG() \
+	((uintmax_t)(flags&MAXINT ? GETARG(uintmax_t) : \
+	    flags&LLONGINT ? GETARG(unsigned long long) : \
+	    flags&LONGINT ? GETARG(unsigned long) : \
+	    flags&PTRINT ? (uintptr_t)GETARG(ptrdiff_t) : /* XXX */ \
+	    flags&SIZEINT ? GETARG(size_t) : \
+	    flags&SHORTINT ? (unsigned short)GETARG(int) : \
+	    flags&CHARINT ? (unsigned char)GETARG(int) : \
+	    GETARG(unsigned int)))
+
+	/*
+	 * Append a digit to a value and check for overflow.
+	 */
+#define APPEND_DIGIT(val, dig) do { \
+	if ((val) > INT_MAX / 10) \
+		goto overflow; \
+	(val) *= 10; \
+	if ((val) > INT_MAX - to_digit((dig))) \
+		goto overflow; \
+	(val) += to_digit((dig)); \
+} while (0)
+
+	 /*
+	  * Get * arguments, including the form *nn$.  Preserve the nextarg
+	  * that the argument can be gotten once the type is determined.
+	  */
+#define GETASTER(val) do { \
+	int n2 = 0; \
+	cp = fmt; \
+	while (is_digit(*cp)) { \
+		APPEND_DIGIT(n2, *cp); \
+		cp++; \
+	} \
+	if (*cp == '$') { \
+		int hold = nextarg; \
+		if (argtable == NULL) { \
+			argtable = statargtable; \
+			if (__find_arguments(fmt0, orgap, &argtable) == -1) { \
+				ret = -1; \
+				goto done; \
+			} \
+		} \
+		nextarg = n2; \
+		val = GETARG(int); \
+		nextarg = hold; \
+		fmt = ++cp; \
+	} else { \
+		val = GETARG(int); \
+	} \
+} while (0)
+
+/*
+* Get the argument indexed by nextarg.   If the argument table is
+* built, use it to get the argument.  If its not, get the next
+* argument (and arguments must be gotten sequentially).
+*/
+#define GETARG(type) \
+	((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
+		(nextarg++, va_arg(ap, type)))
+
+	fmt = (char *)fmt0;
+	argtable = NULL;
+	nextarg = 1;
+	va_copy(orgap, ap);
+	ret = 0;
+#ifdef PRINTF_WIDE_CHAR
+	convbuf = NULL;
+#endif
+
+	if (alloc) {
+		strsize = 128;
+		*strp = str = malloc(strsize);
+		if (str == NULL) {
+			ret = -1;
+			goto done;
+		}
+		estr = str + 127;
+	} else {
+		str = *strp;
+		if (strsize)
+			estr = str + strsize - 1;
+		else
+			estr = NULL;
+	}
+
+	/*
+	 * Scan the format for conversions (`%' character).
+	 */
+	for (;;) {
+		for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
+			continue;
+
+		if (fmt != cp) {
+			ptrdiff_t m = fmt - cp;
+			if (m < 0 || m > INT_MAX - ret)
+				goto overflow;
+			PRINT(cp, m);
+			ret += m;
+		}
+		if (ch == '\0')
+			goto done;
+		fmt++;		/* skip over '%' */
+
+		flags = 0;
+		dprec = 0;
+		width = 0;
+		prec = -1;
+		sign = '\0';
+		ox[1] = '\0';
+
+rflag:		ch = *fmt++;
+reswitch:	switch (ch) {
+		case ' ':
+			/*
+			 * ``If the space and + flags both appear, the space
+			 * flag will be ignored.''
+			 *	-- ANSI X3J11
+			 */
+			if (!sign)
+				sign = ' ';
+			goto rflag;
+		case '#':
+			flags |= ALT;
+			goto rflag;
+		case '\'':
+			/* grouping not implemented */
+			goto rflag;
+		case '*':
+			/*
+			 * ``A negative field width argument is taken as a
+			 * - flag followed by a positive field width.''
+			 *	-- ANSI X3J11
+			 * They don't exclude field widths read from args.
+			 */
+			GETASTER(width);
+			if (width >= 0)
+				goto rflag;
+			if (width == INT_MIN)
+				goto overflow;
+			width = -width;
+			FALLTHROUGH;
+		case '-':
+			flags |= LADJUST;
+			goto rflag;
+		case '+':
+			sign = '+';
+			goto rflag;
+		case '.':
+			if ((ch = *fmt++) == '*') {
+				GETASTER(n);
+				prec = n < 0 ? -1 : n;
+				goto rflag;
+			}
+			n = 0;
+			while (is_digit(ch)) {
+				APPEND_DIGIT(n, ch);
+				ch = *fmt++;
+			}
+			if (ch == '$') {
+				nextarg = n;
+				if (argtable == NULL) {
+					argtable = statargtable;
+					if (__find_arguments(fmt0, orgap,
+					    &argtable) == -1) {
+						ret = -1;
+						goto done;
+					}
+				}
+				goto rflag;
+			}
+			prec = n;
+			goto reswitch;
+		case '0':
+			/*
+			 * ``Note that 0 is taken as a flag, not as the
+			 * beginning of a field width.''
+			 *	-- ANSI X3J11
+			 */
+			flags |= ZEROPAD;
+			goto rflag;
+		case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+			n = 0;
+			do {
+				APPEND_DIGIT(n, ch);
+				ch = *fmt++;
+			} while (is_digit(ch));
+			if (ch == '$') {
+				nextarg = n;
+				if (argtable == NULL) {
+					argtable = statargtable;
+					if (__find_arguments(fmt0, orgap,
+					    &argtable) == -1) {
+						ret = -1;
+						goto done;
+					}
+				}
+				goto rflag;
+			}
+			width = n;
+			goto reswitch;
+#ifdef FLOATING_POINT
+		case 'L':
+			flags |= LONGDBL;
+			goto rflag;
+#endif
+		case 'h':
+			if (*fmt == 'h') {
+				fmt++;
+				flags |= CHARINT;
+			} else {
+				flags |= SHORTINT;
+			}
+			goto rflag;
+		case 'j':
+			flags |= MAXINT;
+			goto rflag;
+		case 'l':
+			if (*fmt == 'l') {
+				fmt++;
+				flags |= LLONGINT;
+			} else {
+				flags |= LONGINT;
+			}
+			goto rflag;
+		case 'q':
+			flags |= LLONGINT;
+			goto rflag;
+		case 't':
+			flags |= PTRINT;
+			goto rflag;
+		case 'z':
+			flags |= SIZEINT;
+			goto rflag;
+		case 'c':
+#ifdef PRINTF_WIDE_CHAR
+			if (flags & LONGINT) {
+				mbstate_t mbs;
+				size_t mbseqlen;
+
+				memset(&mbs, 0, sizeof(mbs));
+				mbseqlen = wcrtomb(buf,
+				    (wchar_t)GETARG(wint_t), &mbs);
+				if (mbseqlen == (size_t)-1) {
+					ret = -1;
+					goto done;
+				}
+				cp = buf;
+				size = (int)mbseqlen;
+			} else {
+#endif
+				*(cp = buf) = GETARG(int);
+				size = 1;
+#ifdef PRINTF_WIDE_CHAR
+			}
+#endif
+			sign = '\0';
+			break;
+		case 'D':
+			flags |= LONGINT;
+			FALLTHROUGH;
+		case 'd':
+		case 'i':
+			_umax = SARG();
+			if ((intmax_t)_umax < 0) {
+				_umax = -_umax;
+				sign = '-';
+			}
+			base = DEC;
+			goto number;
+#ifdef FLOATING_POINT
+		case 'a':
+		case 'A':
+			if (ch == 'a') {
+				ox[1] = 'x';
+				xdigs = xdigs_lower;
+				expchar = 'p';
+			} else {
+				ox[1] = 'X';
+				xdigs = xdigs_upper;
+				expchar = 'P';
+			}
+			if (prec >= 0)
+				prec++;
+			if (dtoaresult)
+				__freedtoa(dtoaresult);
+			if (flags & LONGDBL) {
+				fparg.ldbl = GETARG(long double);
+				dtoaresult = cp =
+				    __hldtoa(fparg.ldbl, xdigs, prec,
+				    &expt, &signflag, &dtoaend);
+				if (dtoaresult == NULL) {
+					errno = ENOMEM;
+					goto done;
+				}
+			} else {
+				fparg.dbl = GETARG(double);
+				dtoaresult = cp =
+				    __hdtoa(fparg.dbl, xdigs, prec,
+				    &expt, &signflag, &dtoaend);
+				if (dtoaresult == NULL) {
+					errno = ENOMEM;
+					goto done;
+				}
+			}
+			if (prec < 0)
+				prec = dtoaend - cp;
+			if (expt == INT_MAX)
+				ox[1] = '\0';
+			goto fp_common;
+		case 'e':
+		case 'E':
+			expchar = ch;
+			if (prec < 0)	/* account for digit before decpt */
+				prec = DEFPREC + 1;
+			else
+				prec++;
+			goto fp_begin;
+		case 'f':
+		case 'F':
+			expchar = '\0';
+			goto fp_begin;
+		case 'g':
+		case 'G':
+			expchar = ch - ('g' - 'e');
+ 			if (prec == 0)
+ 				prec = 1;
+fp_begin:
+			if (prec < 0)
+				prec = DEFPREC;
+			if (dtoaresult)
+				__freedtoa(dtoaresult);
+			if (flags & LONGDBL) {
+				fparg.ldbl = GETARG(long double);
+				dtoaresult = cp =
+				    __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
+				    &expt, &signflag, &dtoaend);
+				if (dtoaresult == NULL) {
+					errno = ENOMEM;
+					goto done;
+				}
+			} else {
+				fparg.dbl = GETARG(double);
+				dtoaresult = cp =
+				    __dtoa(fparg.dbl, expchar ? 2 : 3, prec,
+				    &expt, &signflag, &dtoaend);
+				if (dtoaresult == NULL) {
+					errno = ENOMEM;
+					goto done;
+				}
+				if (expt == 9999)
+					expt = INT_MAX;
+ 			}
+fp_common:
+			if (signflag)
+				sign = '-';
+			if (expt == INT_MAX) {	/* inf or nan */
+				if (*cp == 'N')
+					cp = (ch >= 'a') ? "nan" : "NAN";
+				else
+					cp = (ch >= 'a') ? "inf" : "INF";
+ 				size = 3;
+				flags &= ~ZEROPAD;
+ 				break;
+ 			}
+			flags |= FPT;
+			ndig = dtoaend - cp;
+ 			if (ch == 'g' || ch == 'G') {
+				if (expt > -4 && expt <= prec) {
+					/* Make %[gG] smell like %[fF] */
+					expchar = '\0';
+					if (flags & ALT)
+						prec -= expt;
+					else
+						prec = ndig - expt;
+					if (prec < 0)
+						prec = 0;
+				} else {
+					/*
+					 * Make %[gG] smell like %[eE], but
+					 * trim trailing zeroes if no # flag.
+					 */
+					if (!(flags & ALT))
+						prec = ndig;
+				}
+ 			}
+			if (expchar) {
+				expsize = exponent(expstr, expt - 1, expchar);
+				size = expsize + prec;
+				if (prec > 1 || flags & ALT)
+ 					++size;
+			} else {
+				/* space for digits before decimal point */
+				if (expt > 0)
+					size = expt;
+				else	/* "0" */
+					size = 1;
+				/* space for decimal pt and following digits */
+				if (prec || flags & ALT)
+					size += prec + 1;
+				lead = expt;
+			}
+			break;
+#endif /* FLOATING_POINT */
+#ifndef NO_PRINTF_PERCENT_N
+		case 'n':
+			if (flags & LLONGINT)
+				*GETARG(long long *) = ret;
+			else if (flags & LONGINT)
+				*GETARG(long *) = ret;
+			else if (flags & SHORTINT)
+				*GETARG(short *) = ret;
+			else if (flags & CHARINT)
+				*GETARG(signed char *) = ret;
+			else if (flags & PTRINT)
+				*GETARG(ptrdiff_t *) = ret;
+			else if (flags & SIZEINT)
+				*GETARG(ssize_t *) = ret;
+			else if (flags & MAXINT)
+				*GETARG(intmax_t *) = ret;
+			else
+				*GETARG(int *) = ret;
+			continue;	/* no output */
+#endif /* NO_PRINTF_PERCENT_N */
+		case 'O':
+			flags |= LONGINT;
+			FALLTHROUGH;
+		case 'o':
+			_umax = UARG();
+			base = OCT;
+			goto nosign;
+		case 'p':
+			/*
+			 * ``The argument shall be a pointer to void.  The
+			 * value of the pointer is converted to a sequence
+			 * of printable characters, in an implementation-
+			 * defined manner.''
+			 *	-- ANSI X3J11
+			 */
+			/* NOSTRICT */
+			_umax = (u_long)GETARG(void *);
+			base = HEX;
+			xdigs = xdigs_lower;
+			ox[1] = 'x';
+			goto nosign;
+		case 's': {
+			size_t len;
+
+#ifdef PRINTF_WIDE_CHAR
+			if (flags & LONGINT) {
+				wchar_t *wcp;
+
+				free(convbuf);
+				convbuf = NULL;
+				if ((wcp = GETARG(wchar_t *)) == NULL) {
+					cp = (char *)"(null)";
+				} else {
+					convbuf = __wcsconv(wcp, prec);
+					if (convbuf == NULL) {
+						ret = -1;
+						goto done;
+					}
+					cp = convbuf;
+				}
+			} else
+#endif /* PRINTF_WIDE_CHAR */
+			if ((cp = GETARG(char *)) == NULL)
+				cp = (char *)"(null)";
+			len = prec >= 0 ? strnlen(cp, prec) : strlen(cp);
+			if (len > INT_MAX)
+				goto overflow;
+			size = (int)len;
+			sign = '\0';
+			}
+			break;
+		case 'U':
+			flags |= LONGINT;
+			FALLTHROUGH;
+		case 'u':
+			_umax = UARG();
+			base = DEC;
+			goto nosign;
+		case 'X':
+			xdigs = xdigs_upper;
+			goto hex;
+		case 'x':
+			xdigs = xdigs_lower;
+hex:			_umax = UARG();
+			base = HEX;
+			/* leading 0x/X only if non-zero */
+			if (flags & ALT && _umax != 0)
+				ox[1] = ch;
+
+			/* unsigned conversions */
+nosign:			sign = '\0';
+			/*
+			 * ``... diouXx conversions ... if a precision is
+			 * specified, the 0 flag will be ignored.''
+			 *	-- ANSI X3J11
+			 */
+number:			if ((dprec = prec) >= 0)
+				flags &= ~ZEROPAD;
+
+			/*
+			 * ``The result of converting a zero value with an
+			 * explicit precision of zero is no characters.''
+			 *	-- ANSI X3J11
+			 */
+			cp = buf + BUF;
+			if (_umax != 0 || prec != 0) {
+				/*
+				 * Unsigned mod is hard, and unsigned mod
+				 * by a constant is easier than that by
+				 * a variable; hence this switch.
+				 */
+				switch (base) {
+				case OCT:
+					do {
+						*--cp = to_char(_umax & 7);
+						_umax >>= 3;
+					} while (_umax);
+					/* handle octal leading 0 */
+					if (flags & ALT && *cp != '0')
+						*--cp = '0';
+					break;
+
+				case DEC:
+					/* many numbers are 1 digit */
+					while (_umax >= 10) {
+						*--cp = to_char(_umax % 10);
+						_umax /= 10;
+					}
+					*--cp = to_char(_umax);
+					break;
+
+				case HEX:
+					do {
+						*--cp = xdigs[_umax & 15];
+						_umax >>= 4;
+					} while (_umax);
+					break;
+
+				default:
+					cp = (char *)"bug in xxxprintf: bad base";
+					size = strlen(cp);
+					goto skipsize;
+				}
+			}
+			size = buf + BUF - cp;
+			if (size > BUF)	/* should never happen */
+				abort();
+		skipsize:
+			break;
+		default:	/* "%?" prints ?, unless ? is NUL */
+			if (ch == '\0')
+				goto done;
+			/* pretend it was %c with argument ch */
+			cp = buf;
+			*cp = ch;
+			size = 1;
+			sign = '\0';
+			break;
+		}
+
+		/*
+		 * All reasonable formats wind up here.  At this point, `cp'
+		 * points to a string which (if not flags&LADJUST) should be
+		 * padded out to `width' places.  If flags&ZEROPAD, it should
+		 * first be prefixed by any sign or other prefix; otherwise,
+		 * it should be blank padded before the prefix is emitted.
+		 * After any left-hand padding and prefixing, emit zeroes
+		 * required by a decimal %[diouxX] precision, then print the
+		 * string proper, then emit zeroes required by any leftover
+		 * floating precision; finally, if LADJUST, pad with blanks.
+		 *
+		 * Compute actual size, so we know how much to pad.
+		 * size excludes decimal prec; realsz includes it.
+		 */
+		realsz = dprec > size ? dprec : size;
+		if (sign)
+			realsz++;
+		if (ox[1])
+			realsz+= 2;
+
+		/* right-adjusting blank padding */
+		if ((flags & (LADJUST|ZEROPAD)) == 0)
+			PAD(width - realsz, blanks);
+
+		/* prefix */
+		if (sign)
+			PRINT(&sign, 1);
+		if (ox[1]) {	/* ox[1] is either x, X, or \0 */
+			ox[0] = '0';
+			PRINT(ox, 2);
+		}
+
+		/* right-adjusting zero padding */
+		if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
+			PAD(width - realsz, zeroes);
+
+		/* leading zeroes from decimal precision */
+		PAD(dprec - size, zeroes);
+
+		/* the string or number proper */
+#ifdef FLOATING_POINT
+		if ((flags & FPT) == 0) {
+			PRINT(cp, size);
+		} else {	/* glue together f_p fragments */
+#ifdef HAVE_NL_LANGINFO
+			if (decimal_point == NULL)
+				decimal_point = nl_langinfo(RADIXCHAR);
+#endif
+			if (!expchar) {	/* %[fF] or sufficiently short %[gG] */
+				if (expt <= 0) {
+					PRINT(zeroes, 1);
+					if (prec || flags & ALT)
+						PRINT(decimal_point, 1);
+					PAD(-expt, zeroes);
+					/* already handled initial 0's */
+					prec += expt;
+ 				} else {
+					PRINTANDPAD(cp, dtoaend, lead, zeroes);
+					cp += lead;
+					if (prec || flags & ALT)
+						PRINT(decimal_point, 1);
+				}
+				PRINTANDPAD(cp, dtoaend, prec, zeroes);
+			} else {	/* %[eE] or sufficiently long %[gG] */
+				if (prec > 1 || flags & ALT) {
+					buf[0] = *cp++;
+					buf[1] = *decimal_point;
+					PRINT(buf, 2);
+					PRINT(cp, ndig-1);
+					PAD(prec - ndig, zeroes);
+				} else { /* XeYYY */
+					PRINT(cp, 1);
+				}
+				PRINT(expstr, expsize);
+			}
+		}
+#else
+		PRINT(cp, size);
+#endif
+		/* left-adjusting padding (always blank) */
+		if (flags & LADJUST)
+			PAD(width - realsz, blanks);
+
+		/* finally, adjust ret */
+		if (width < realsz)
+			width = realsz;
+		if (width > INT_MAX - ret)
+			goto overflow;
+		ret += width;
+	}
+done:
+	va_end(orgap);
+	if (strsize)
+		*str = '\0';
+	goto finish;
+
+overflow:
+	errno = EOVERFLOW;
+	ret = -1;
+
+finish:
+#ifdef PRINTF_WIDE_CHAR
+	free(convbuf);
+#endif
+#ifdef FLOATING_POINT
+	if (dtoaresult)
+		__freedtoa(dtoaresult);
+#endif
+	if (argtable != NULL && argtable != statargtable) {
+		sudo_mmap_free(argtable);
+		argtable = NULL;
+	}
+	return ret;
+}
+
+/*
+ * Type ids for argument type table.
+ */
+#define T_UNUSED	0
+#define T_SHORT		1
+#define T_U_SHORT	2
+#define TP_SHORT	3
+#define T_INT		4
+#define T_U_INT		5
+#define TP_INT		6
+#define T_LONG		7
+#define T_U_LONG	8
+#define TP_LONG		9
+#define T_LLONG		10
+#define T_U_LLONG	11
+#define TP_LLONG	12
+#define T_DOUBLE	13
+#define T_LONG_DOUBLE	14
+#define TP_CHAR		15
+#define TP_VOID		16
+#define T_PTRINT	17
+#define TP_PTRINT	18
+#define T_SIZEINT	19
+#define T_SSIZEINT	20
+#define TP_SSIZEINT	21
+#define T_MAXINT	22
+#define T_MAXUINT	23
+#define TP_MAXINT	24
+#define T_CHAR		25
+#define T_U_CHAR	26
+#define T_WINT		27
+#define TP_WCHAR	28
+
+/*
+ * Find all arguments when a positional parameter is encountered.  Returns a
+ * table, indexed by argument number, of pointers to each arguments.  The
+ * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
+ * It will be replaced with a mmap-ed one if it overflows (malloc cannot be
+ * used since we are attempting to make snprintf thread safe, and alloca is
+ * problematic since we have nested functions..)
+ */
+static int
+__find_arguments(const char *fmt0, va_list ap, union arg **argtable)
+{
+	char *fmt;		/* format string */
+	int ch;			/* character from fmt */
+	int n;			/* handy integer (short term usage) */
+	char *cp;		/* handy char pointer (short term usage) */
+	int flags;		/* flags as above */
+	unsigned char *typetable; /* table of types */
+	unsigned char stattypetable[STATIC_ARG_TBL_SIZE];
+	int tablesize;		/* current size of type table */
+	int tablemax;		/* largest used index in table */
+	int nextarg;		/* 1-based argument index */
+	int ret = 0;		/* return value */
+
+	/*
+	 * Add an argument type to the table, expanding if necessary.
+	 */
+#define ADDTYPE(type) \
+	((nextarg >= tablesize) ? \
+		__grow_type_table(&typetable, &tablesize) : 0, \
+	(nextarg > tablemax) ? tablemax = nextarg : 0, \
+	typetable[nextarg++] = type)
+
+#define	ADDSARG() \
+	((flags&MAXINT) ? ADDTYPE(T_MAXINT) : \
+	    ((flags&PTRINT) ? ADDTYPE(T_PTRINT) : \
+	    ((flags&SIZEINT) ? ADDTYPE(T_SSIZEINT) : \
+	    ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \
+	    ((flags&LONGINT) ? ADDTYPE(T_LONG) : \
+	    ((flags&SHORTINT) ? ADDTYPE(T_SHORT) : \
+	    ((flags&CHARINT) ? ADDTYPE(T_CHAR) : ADDTYPE(T_INT))))))))
+
+#define	ADDUARG() \
+	((flags&MAXINT) ? ADDTYPE(T_MAXUINT) : \
+	    ((flags&PTRINT) ? ADDTYPE(T_PTRINT) : \
+	    ((flags&SIZEINT) ? ADDTYPE(T_SIZEINT) : \
+	    ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \
+	    ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : \
+	    ((flags&SHORTINT) ? ADDTYPE(T_U_SHORT) : \
+	    ((flags&CHARINT) ? ADDTYPE(T_U_CHAR) : ADDTYPE(T_U_INT))))))))
+
+	/*
+	 * Add * arguments to the type array.
+	 */
+#define ADDASTER() do { \
+	int n2 = 0; \
+	cp = fmt; \
+	while (is_digit(*cp)) { \
+		APPEND_DIGIT(n2, *cp); \
+		cp++; \
+	} \
+	if (*cp == '$') { \
+		int hold = nextarg; \
+		nextarg = n2; \
+		ADDTYPE(T_INT); \
+		nextarg = hold; \
+		fmt = ++cp; \
+	} else { \
+		ADDTYPE(T_INT); \
+	} \
+} while (0)
+	fmt = (char *)fmt0;
+	typetable = stattypetable;
+	tablesize = STATIC_ARG_TBL_SIZE;
+	tablemax = 0;
+	nextarg = 1;
+	memset(typetable, T_UNUSED, STATIC_ARG_TBL_SIZE);
+
+	/*
+	 * Scan the format for conversions (`%' character).
+	 */
+	for (;;) {
+		for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
+			continue;
+		if (ch == '\0')
+			goto done;
+		fmt++;		/* skip over '%' */
+
+		flags = 0;
+
+rflag:		ch = *fmt++;
+reswitch:	switch (ch) {
+		case ' ':
+		case '#':
+		case '\'':
+			goto rflag;
+		case '*':
+			ADDASTER();
+			goto rflag;
+		case '-':
+		case '+':
+			goto rflag;
+		case '.':
+			if ((ch = *fmt++) == '*') {
+				ADDASTER();
+				goto rflag;
+			}
+			while (is_digit(ch)) {
+				ch = *fmt++;
+			}
+			goto reswitch;
+		case '0':
+			goto rflag;
+		case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+			n = 0;
+			do {
+				APPEND_DIGIT(n ,ch);
+				ch = *fmt++;
+			} while (is_digit(ch));
+			if (ch == '$') {
+				nextarg = n;
+				goto rflag;
+			}
+			goto reswitch;
+#ifdef FLOATING_POINT
+		case 'L':
+			flags |= LONGDBL;
+			goto rflag;
+#endif
+		case 'h':
+			if (*fmt == 'h') {
+				fmt++;
+				flags |= CHARINT;
+			} else {
+				flags |= SHORTINT;
+			}
+			goto rflag;
+		case 'j':
+			flags |= MAXINT;
+			goto rflag;
+		case 'l':
+			if (*fmt == 'l') {
+				fmt++;
+				flags |= LLONGINT;
+			} else {
+				flags |= LONGINT;
+			}
+			goto rflag;
+		case 'q':
+			flags |= LLONGINT;
+			goto rflag;
+		case 't':
+			flags |= PTRINT;
+			goto rflag;
+		case 'z':
+			flags |= SIZEINT;
+			goto rflag;
+		case 'c':
+#ifdef PRINTF_WIDE_CHAR
+			if (flags & LONGINT)
+				ADDTYPE(T_WINT);
+			else
+#endif
+				ADDTYPE(T_INT);
+			break;
+		case 'D':
+			flags |= LONGINT;
+			FALLTHROUGH;
+		case 'd':
+		case 'i':
+			ADDSARG();
+			break;
+#ifdef FLOATING_POINT
+		case 'a':
+		case 'A':
+		case 'e':
+		case 'E':
+		case 'f':
+		case 'F':
+		case 'g':
+		case 'G':
+			if (flags & LONGDBL)
+				ADDTYPE(T_LONG_DOUBLE);
+			else
+				ADDTYPE(T_DOUBLE);
+			break;
+#endif /* FLOATING_POINT */
+#ifndef NO_PRINTF_PERCENT_N
+		case 'n':
+			if (flags & LLONGINT)
+				ADDTYPE(TP_LLONG);
+			else if (flags & LONGINT)
+				ADDTYPE(TP_LONG);
+			else if (flags & SHORTINT)
+				ADDTYPE(TP_SHORT);
+			else if (flags & PTRINT)
+				ADDTYPE(TP_PTRINT);
+			else if (flags & SIZEINT)
+				ADDTYPE(TP_SSIZEINT);
+			else if (flags & MAXINT)
+				ADDTYPE(TP_MAXINT);
+			else
+				ADDTYPE(TP_INT);
+			continue;	/* no output */
+#endif /* NO_PRINTF_PERCENT_N */
+		case 'O':
+			flags |= LONGINT;
+			FALLTHROUGH;
+		case 'o':
+			ADDUARG();
+			break;
+		case 'p':
+			ADDTYPE(TP_VOID);
+			break;
+		case 's':
+#ifdef PRINTF_WIDE_CHAR
+			if (flags & LONGINT)
+				ADDTYPE(TP_WCHAR);
+			else
+#endif
+				ADDTYPE(TP_CHAR);
+			break;
+		case 'U':
+			flags |= LONGINT;
+			FALLTHROUGH;
+		case 'u':
+		case 'X':
+		case 'x':
+			ADDUARG();
+			break;
+		default:	/* "%?" prints ?, unless ? is NUL */
+			if (ch == '\0')
+				goto done;
+			break;
+		}
+	}
+done:
+	/*
+	 * Build the argument table.
+	 */
+	if (tablemax >= STATIC_ARG_TBL_SIZE) {
+		*argtable = sudo_mmap_allocarray(tablemax + 1,
+		    sizeof(union arg));
+		if (*argtable == NULL)
+			return -1;
+	}
+
+	for (n = 1; n <= tablemax; n++) {
+		switch (typetable[n]) {
+		case T_UNUSED:
+		case T_CHAR:
+		case T_U_CHAR:
+		case T_SHORT:
+		case T_U_SHORT:
+		case T_INT:
+			(*argtable)[n].intarg = va_arg(ap, int);
+			break;
+		case TP_SHORT:
+			(*argtable)[n].pshortarg = va_arg(ap, short *);
+			break;
+		case T_U_INT:
+			(*argtable)[n].uintarg = va_arg(ap, unsigned int);
+			break;
+		case TP_INT:
+			(*argtable)[n].pintarg = va_arg(ap, int *);
+			break;
+		case T_LONG:
+			(*argtable)[n].longarg = va_arg(ap, long);
+			break;
+		case T_U_LONG:
+			(*argtable)[n].ulongarg = va_arg(ap, unsigned long);
+			break;
+		case TP_LONG:
+			(*argtable)[n].plongarg = va_arg(ap, long *);
+			break;
+		case T_LLONG:
+			(*argtable)[n].longlongarg = va_arg(ap, long long);
+			break;
+		case T_U_LLONG:
+			(*argtable)[n].ulonglongarg = va_arg(ap, unsigned long long);
+			break;
+		case TP_LLONG:
+			(*argtable)[n].plonglongarg = va_arg(ap, long long *);
+			break;
+#ifdef FLOATING_POINT
+		case T_DOUBLE:
+			(*argtable)[n].doublearg = va_arg(ap, double);
+			break;
+		case T_LONG_DOUBLE:
+			(*argtable)[n].longdoublearg = va_arg(ap, long double);
+			break;
+#endif
+		case TP_CHAR:
+			(*argtable)[n].pchararg = va_arg(ap, char *);
+			break;
+		case TP_VOID:
+			(*argtable)[n].pvoidarg = va_arg(ap, void *);
+			break;
+		case T_PTRINT:
+			(*argtable)[n].ptrdiffarg = va_arg(ap, ptrdiff_t);
+			break;
+		case TP_PTRINT:
+			(*argtable)[n].pptrdiffarg = va_arg(ap, ptrdiff_t *);
+			break;
+		case T_SIZEINT:
+			(*argtable)[n].sizearg = va_arg(ap, size_t);
+			break;
+		case T_SSIZEINT:
+			(*argtable)[n].ssizearg = va_arg(ap, ssize_t);
+			break;
+		case TP_SSIZEINT:
+			(*argtable)[n].pssizearg = va_arg(ap, ssize_t *);
+			break;
+		case T_MAXINT:
+			(*argtable)[n].intmaxarg = va_arg(ap, intmax_t);
+			break;
+		case T_MAXUINT:
+			(*argtable)[n].uintmaxarg = va_arg(ap, uintmax_t);
+			break;
+		case TP_MAXINT:
+			(*argtable)[n].pintmaxarg = va_arg(ap, intmax_t *);
+			break;
+#ifdef PRINTF_WIDE_CHAR
+		case T_WINT:
+			(*argtable)[n].wintarg = va_arg(ap, wint_t);
+			break;
+		case TP_WCHAR:
+			(*argtable)[n].pwchararg = va_arg(ap, wchar_t *);
+			break;
+#endif
+		}
+	}
+	goto finish;
+
+overflow:
+	errno = EOVERFLOW;
+	ret = -1;
+
+finish:
+	if (typetable != NULL && typetable != stattypetable) {
+		sudo_mmap_free(typetable);
+		typetable = NULL;
+	}
+	return ret;
+}
+
+/*
+ * Increase the size of the type table.
+ */
+static int
+__grow_type_table(unsigned char **typetable, int *tablesize)
+{
+	unsigned char *oldtable = *typetable;
+	int newsize = *tablesize * 2;
+
+	if (newsize < sysconf(_SC_PAGESIZE))
+		newsize = sysconf(_SC_PAGESIZE);
+
+	if (*tablesize == STATIC_ARG_TBL_SIZE) {
+		*typetable = sudo_mmap_alloc(newsize);
+		if (*typetable == NULL)
+			return -1;
+		memcpy(*typetable, oldtable, *tablesize);
+	} else {
+		unsigned char *new = sudo_mmap_alloc(newsize);
+		if (new == NULL)
+			return -1;
+		memcpy(new, *typetable, *tablesize);
+		sudo_mmap_free(*typetable);
+		*typetable = new;
+	}
+	memset(*typetable + *tablesize, T_UNUSED, (newsize - *tablesize));
+
+	*tablesize = newsize;
+	return 0;
+}
+
+#ifdef FLOATING_POINT
+static int
+exponent(char *p0, int exp, int fmtch)
+{
+	char *p, *t;
+	char expbuf[MAXEXPDIG];
+
+	p = p0;
+	*p++ = fmtch;
+	if (exp < 0) {
+		exp = -exp;
+		*p++ = '-';
+	} else
+		*p++ = '+';
+	t = expbuf + MAXEXPDIG;
+	if (exp > 9) {
+		do {
+			*--t = to_char(exp % 10);
+		} while ((exp /= 10) > 9);
+		*--t = to_char(exp);
+		for (; t < expbuf + MAXEXPDIG; *p++ = *t++)
+			/* nothing */;
+	} else {
+		/*
+		 * Exponents for decimal floating point conversions
+		 * (%[eEgG]) must be at least two characters long,
+		 * whereas exponents for hexadecimal conversions can
+		 * be only one character long.
+		 */
+		if (fmtch == 'e' || fmtch == 'E')
+			*p++ = '0';
+		*p++ = to_char(exp);
+	}
+	return p - p0;
+}
+#endif /* FLOATING_POINT */
+
+#if !defined(HAVE_VSNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+int
+sudo_vsnprintf(char *str, size_t n, const char *fmt, va_list ap)
+{
+	if (n > INT_MAX) {
+		errno = EOVERFLOW;
+		*str = '\0';
+		return -1;
+	}
+	return xxxprintf(&str, n, 0, fmt, ap);
+}
+#endif /* !HAVE_VSNPRINTF || PREFER_PORTABLE_SNPRINTF */
+
+#if !defined(HAVE_SNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+int
+sudo_snprintf(char *str, size_t n, char const *fmt, ...)
+{
+	int ret;
+	va_list ap;
+
+	if (n > INT_MAX) {
+		errno = EOVERFLOW;
+		*str = '\0';
+		return -1;
+	}
+	va_start(ap, fmt);
+	ret = xxxprintf(&str, n, 0, fmt, ap);
+	va_end(ap);
+	return ret;
+}
+#endif /* !HAVE_SNPRINTF || PREFER_PORTABLE_SNPRINTF */
+
+#if !defined(HAVE_VASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+int
+sudo_vasprintf(char **str, const char *fmt, va_list ap)
+{
+	int ret;
+
+	ret = xxxprintf(str, 0, 1, fmt, ap);
+	if (ret == -1)
+		*str = NULL;
+	return ret;
+}
+#endif /* !HAVE_VASPRINTF || PREFER_PORTABLE_SNPRINTF */
+
+#if !defined(HAVE_ASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+int
+sudo_asprintf(char **str, char const *fmt, ...)
+{
+	int ret;
+	va_list ap;
+
+	va_start(ap, fmt);
+	ret = xxxprintf(str, 0, 1, fmt, ap);
+	va_end(ap);
+	if (ret == -1)
+		*str = NULL;
+	return ret;
+}
+#endif /* !HAVE_ASPRINTF || PREFER_PORTABLE_SNPRINTF */
+
+#endif /* !HAVE_VSNPRINTF || !HAVE_SNPRINTF || !HAVE_VASPRINTF || !HAVE_ASPRINTF || PREFER_PORTABLE_SNPRINTF */
diff --git a/lib/util/str2sig.c b/lib/util/str2sig.c
new file mode 100644
index 0000000..e265ec4
--- /dev/null
+++ b/lib/util/str2sig.c
@@ -0,0 +1,174 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_STR2SIG
+
+#include <errno.h>
+#include <string.h>
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <ctype.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+#if !defined(HAVE_SIGABBREV_NP)
+# if defined(HAVE_DECL_SYS_SIGNAME) && HAVE_DECL_SYS_SIGNAME == 1
+#   define sigabbrev_np(_x)	sys_signame[(_x)]
+# elif defined(HAVE_DECL__SYS_SIGNAME) && HAVE_DECL__SYS_SIGNAME == 1
+#   define sigabbrev_np(_x)	_sys_signame[(_x)]
+# elif defined(HAVE_SYS_SIGABBREV)
+#   define sigabbrev_np(_x)	sys_sigabbrev[(_x)]
+#  if defined(HAVE_DECL_SYS_SIGABBREV) && HAVE_DECL_SYS_SIGABBREV == 0
+    /* sys_sigabbrev is not declared by glibc */
+    extern const char *const sys_sigabbrev[NSIG];
+#  endif
+# else
+#   define sigabbrev_np(_x)	sudo_sys_signame[(_x)]
+    extern const char *const sudo_sys_signame[NSIG];
+# endif
+#endif /* !HAVE_SIGABBREV_NP */
+
+/*
+ * Many systems use aliases for source backward compatibility.
+ */
+static struct sigalias {
+    const char *name;
+    int number;
+} sigaliases[] = {
+#ifdef SIGABRT
+    { "ABRT", SIGABRT },
+#endif
+#ifdef SIGCLD
+    { "CLD",  SIGCLD },
+#endif
+#ifdef SIGIO
+    { "IO",   SIGIO },
+#endif
+#ifdef SIGIOT
+    { "IOT",  SIGIOT },
+#endif
+#ifdef SIGLOST
+    { "LOST", SIGLOST },
+#endif
+#ifdef SIGPOLL
+    { "POLL", SIGPOLL },
+#endif
+    { NULL, -1 }
+};
+
+/*
+ * Translate signal name to number.
+ */
+int
+sudo_str2sig(const char *signame, int *result)
+{
+    struct sigalias *alias;
+    const char *errstr;
+    int signo;
+
+    /* Could be a signal number encoded as a string. */
+    if (isdigit((unsigned char)signame[0])) {
+	signo = sudo_strtonum(signame, 0, NSIG - 1, &errstr);
+	if (errstr != NULL)
+	    return -1;
+	*result = signo;
+	return 0;
+    }
+
+    /* Check real-time signals. */
+#if defined(SIGRTMIN)
+    if (strncmp(signame, "RTMIN", 5) == 0) {
+	if (signame[5] == '\0') {
+	    *result = SIGRTMIN;
+	    return 0;
+	}
+	if (signame[5] == '+') {
+	    if (isdigit((unsigned char)signame[6])) {
+# ifdef _SC_RTSIG_MAX
+		const long rtmax = sysconf(_SC_RTSIG_MAX);
+# else
+		const long rtmax = SIGRTMAX - SIGRTMIN;
+# endif
+		const int off = signame[6] - '0';
+
+		if (rtmax > 0 && off < rtmax / 2) {
+		    *result = SIGRTMIN + off;
+		    return 0;
+		}
+	    }
+	}
+    }
+#endif
+#if defined(SIGRTMAX)
+    if (strncmp(signame, "RTMAX", 5) == 0) {
+	if (signame[5] == '\0') {
+	    *result = SIGRTMAX;
+	    return 0;
+	}
+	if (signame[5] == '-') {
+	    if (isdigit((unsigned char)signame[6])) {
+# ifdef _SC_RTSIG_MAX
+		const long rtmax = sysconf(_SC_RTSIG_MAX);
+# else
+		const long rtmax = SIGRTMAX - SIGRTMIN;
+# endif
+		const int off = signame[6] - '0';
+
+		if (rtmax > 0 && off < rtmax / 2) {
+		    *result = SIGRTMAX - off;
+		    return 0;
+		}
+	    }
+	}
+    }
+#endif
+
+    /* Check aliases. */
+    for (alias = sigaliases; alias->name != NULL; alias++) {
+	if (strcmp(signame, alias->name) == 0) {
+	    *result = alias->number;
+	    return 0;
+	}
+    }
+
+    for (signo = 1; signo < NSIG; signo++) {
+	const char *cp = sigabbrev_np(signo);
+	if (cp != NULL) {
+	    /* On macOS sys_signame[] may contain lower-case names. */
+	    if (strcasecmp(signame, cp) == 0) {
+		*result = signo;
+		return 0;
+	    }
+	}
+    }
+
+    errno = EINVAL;
+    return -1;
+}
+#endif /* HAVE_STR2SIG */
diff --git a/lib/util/strlcat.c b/lib/util/strlcat.c
new file mode 100644
index 0000000..fa1934a
--- /dev/null
+++ b/lib/util/strlcat.c
@@ -0,0 +1,69 @@
+/*	$OpenBSD: strlcat.c,v 1.15 2015/03/02 21:41:08 millert Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1998, 2003-2005, 2010-2011, 2013-2015
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_STRLCAT
+
+#include <string.h>
+
+#include "sudo_compat.h"
+
+/*
+ * Appends src to string dst of size dsize (unlike strncat, dsize is the
+ * full size of dst, not space left).  At most dsize-1 characters
+ * will be copied.  Always NUL terminates (unless dsize <= strlen(dst)).
+ * Returns strlen(src) + MIN(dsize, strlen(initial dst)).
+ * If retval >= dsize, truncation occurred.
+ */
+size_t
+sudo_strlcat(char *dst, const char *src, size_t dsize)
+{
+	const char *odst = dst;
+	const char *osrc = src;
+	size_t n = dsize;
+	size_t dlen;
+
+	/* Find the end of dst and adjust bytes left but don't go past end. */
+	while (n-- != 0 && *dst != '\0')
+		dst++;
+	dlen = dst - odst;
+	n = dsize - dlen;
+
+	if (n-- == 0)
+		return(dlen + strlen(src));
+	while (*src != '\0') {
+		if (n != 0) {
+			*dst++ = *src;
+			n--;
+		}
+		src++;
+	}
+	*dst = '\0';
+
+	return(dlen + (src - osrc));	/* count does not include NUL */
+}
+#endif /* HAVE_STRLCAT */
diff --git a/lib/util/strlcpy.c b/lib/util/strlcpy.c
new file mode 100644
index 0000000..f9e5244
--- /dev/null
+++ b/lib/util/strlcpy.c
@@ -0,0 +1,64 @@
+/*	$OpenBSD: strlcpy.c,v 1.12 2015/01/15 03:54:12 millert Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1998, 2003-2005, 2010-2011, 2013-2015
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_STRLCPY
+
+#include <string.h>
+
+#include "sudo_compat.h"
+
+/*
+ * Copy string src to buffer dst of size dsize.  At most dsize-1
+ * chars will be copied.  Always NUL terminates (unless dsize == 0).
+ * Returns strlen(src); if retval >= dsize, truncation occurred.
+ */
+size_t
+sudo_strlcpy(char *dst, const char *src, size_t dsize)
+{
+	const char *osrc = src;
+	size_t nleft = dsize;
+
+	/* Copy as many bytes as will fit. */
+	if (nleft != 0) {
+		while (--nleft != 0) {
+			if ((*dst++ = *src++) == '\0')
+				break;
+		}
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src. */
+	if (nleft == 0) {
+		if (dsize != 0)
+			*dst = '\0';		/* NUL-terminate dst */
+		while (*src++)
+			continue;
+	}
+
+	return(src - osrc - 1);	/* count does not include NUL */
+}
+#endif /* HAVE_STRLCPY */
diff --git a/lib/util/strndup.c b/lib/util/strndup.c
new file mode 100644
index 0000000..75b92eb
--- /dev/null
+++ b/lib/util/strndup.c
@@ -0,0 +1,51 @@
+/*	$OpenBSD: strndup.c,v 1.1 2010/05/18 22:24:55 tedu Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_STRNDUP
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "sudo_compat.h"
+
+char *
+sudo_strndup(const char *str, size_t maxlen)
+{
+	char *copy;
+	size_t len;
+
+	len = strnlen(str, maxlen);
+	copy = malloc(len + 1);
+	if (copy != NULL) {
+		(void)memcpy(copy, str, len);
+		copy[len] = '\0';
+	}
+
+	return copy;
+}
+
+#endif /* HAVE_STRNDUP */
diff --git a/lib/util/strnlen.c b/lib/util/strnlen.c
new file mode 100644
index 0000000..5e0977a
--- /dev/null
+++ b/lib/util/strnlen.c
@@ -0,0 +1,45 @@
+/*	$OpenBSD: strnlen.c,v 1.5 2014/06/10 04:17:37 deraadt Exp $	*/
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_STRNLEN
+
+#include <sys/types.h>
+
+#include "sudo_compat.h"
+
+size_t
+sudo_strnlen(const char *str, size_t maxlen)
+{
+	const char *cp;
+
+	for (cp = str; maxlen != 0 && *cp != '\0'; cp++, maxlen--)
+		continue;
+
+	return (size_t)(cp - str);
+}
+
+#endif /* HAVE_STRNLEN */
diff --git a/lib/util/strsignal.c b/lib/util/strsignal.c
new file mode 100644
index 0000000..76c9378
--- /dev/null
+++ b/lib/util/strsignal.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2014 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_STRSIGNAL
+
+#include <signal.h>
+
+#include "sudo_compat.h"
+#include "sudo_gettext.h"
+
+#if defined(HAVE_DECL_SYS_SIGLIST) && HAVE_DECL_SYS_SIGLIST == 1
+# define sudo_sys_siglist	sys_siglist
+#elif defined(HAVE_DECL__SYS_SIGLIST) && HAVE_DECL__SYS_SIGLIST == 1
+# define sudo_sys_siglist	_sys_siglist
+#else
+extern const char *const sudo_sys_siglist[NSIG];
+#endif
+
+/*
+ * Get signal description string
+ */
+char *
+sudo_strsignal(int signo)
+{
+    if (signo > 0 && signo < NSIG && sudo_sys_siglist[signo] != NULL)
+	return (char *)sudo_sys_siglist[signo];
+    /* XXX - should be "Unknown signal: %d" */
+    return (char *)_("Unknown signal");
+}
+#endif /* HAVE_STRSIGNAL */
diff --git a/lib/util/strsplit.c b/lib/util/strsplit.c
new file mode 100644
index 0000000..7663460
--- /dev/null
+++ b/lib/util/strsplit.c
@@ -0,0 +1,73 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * Like strtok_r but non-destructive and works w/o a NUL terminator.
+ * TODO: Optimize by storing current char in a variable ch
+ */
+const char *
+sudo_strsplit_v1(const char *str, const char *endstr, const char *sep, const char **last)
+{
+    const char *cp, *s;
+    debug_decl(sudo_strsplit, SUDO_DEBUG_UTIL);
+
+    /* If no str specified, use last ptr (if any). */
+    if (str == NULL)
+	str = *last;
+
+    /* Skip leading separator characters. */
+    while (str < endstr) {
+	for (s = sep; *s != '\0'; s++) {
+	    if (*str == *s) {
+		str++;
+		break;
+	    }
+	}
+	if (*s == '\0')
+	    break;
+    }
+
+    /* Empty string? */
+    if (str >= endstr) {
+	*last = endstr;
+	debug_return_ptr(NULL);
+    }
+
+    /* Scan str until we hit a char from sep. */
+    for (cp = str; cp < endstr; cp++) {
+	for (s = sep; *s != '\0'; s++) {
+	    if (*cp == *s)
+		break;
+	}
+	if (*s != '\0')
+	    break;
+    }
+    *last = cp;
+    debug_return_const_ptr(str);
+}
diff --git a/lib/util/strtobool.c b/lib/util/strtobool.c
new file mode 100644
index 0000000..3cd1986
--- /dev/null
+++ b/lib/util/strtobool.c
@@ -0,0 +1,77 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010-2016 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+#include <string.h>
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+int
+sudo_strtobool_v1(const char *str)
+{
+    debug_decl(sudo_strtobool, SUDO_DEBUG_UTIL);
+
+    switch (*str) {
+	case '0':
+	case '1':
+	    if (str[1] == '\0')
+		debug_return_int(*str - '0');
+	    break;
+	case 'y':
+	case 'Y':
+	    if (strcasecmp(str, "yes") == 0)
+		debug_return_int(1);
+	    break;
+	case 't':
+	case 'T':
+	    if (strcasecmp(str, "true") == 0)
+		debug_return_int(1);
+	    break;
+	case 'o':
+	case 'O':
+	    if (strcasecmp(str, "on") == 0)
+		debug_return_int(1);
+	    if (strcasecmp(str, "off") == 0)
+		debug_return_int(0);
+	    break;
+	case 'n':
+	case 'N':
+	    if (strcasecmp(str, "no") == 0)
+		debug_return_int(0);
+	    break;
+	case 'f':
+	case 'F':
+	    if (strcasecmp(str, "false") == 0)
+		debug_return_int(0);
+	    break;
+    }
+    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	"invalid boolean value \"%s\"", str);
+
+    debug_return_int(-1);
+}
diff --git a/lib/util/strtoid.c b/lib/util/strtoid.c
new file mode 100644
index 0000000..fe5b44d
--- /dev/null
+++ b/lib/util/strtoid.c
@@ -0,0 +1,108 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>			/* for id_t */
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+
+/*
+ * Make sure that the ID ends with a valid separator char.
+ */
+static bool
+valid_separator(const char *p, const char *ep, const char *sep)
+{
+    bool valid = false;
+
+    if (ep != p) {
+	/* check for valid separator (including '\0') */
+	if (sep == NULL)
+	    sep = "";
+	do {
+	    if (*ep == *sep)
+		valid = true;
+	} while (*sep++ != '\0');
+    }
+    return valid;
+}
+
+/*
+ * Parse a uid/gid in string form.
+ * If sep is non-NULL, it contains valid separator characters (e.g. comma, space)
+ * If endp is non-NULL it is set to the next char after the ID.
+ * On success, returns the parsed ID and clears errstr.
+ * On error, returns 0 and sets errstr.
+ */
+id_t
+sudo_strtoidx_v1(const char *p, const char *sep, char **endp, const char **errstrp)
+{
+    const char *errstr;
+    char *ep;
+    id_t ret;
+    debug_decl(sudo_strtoid, SUDO_DEBUG_UTIL);
+
+    ret = sudo_strtonumx(p, INT_MIN, UINT_MAX, &ep, &errstr);
+    if (errstr == NULL) {
+	/*
+	 * Disallow id -1 (UINT_MAX), which means "no change"
+	 * and check for a valid separator (if specified).
+	 */
+	if (ret == (id_t)-1 || ret == (id_t)UINT_MAX || !valid_separator(p, ep, sep)) {
+	    errstr = N_("invalid value");
+	    errno = EINVAL;
+	    ret = 0;
+	}
+    }
+    if (errstrp != NULL)
+	*errstrp = errstr;
+    if (endp != NULL)
+	*endp = ep;
+    debug_return_id_t(ret);
+}
+
+/* Backward compatibility */
+id_t
+sudo_strtoid_v1(const char *p, const char *sep, char **endp, const char **errstrp)
+{
+    return sudo_strtoidx_v1(p, sep, endp, errstrp);
+}
+
+/* Simplified interface */
+id_t
+sudo_strtoid_v2(const char *p, const char **errstrp)
+{
+    return sudo_strtoidx_v1(p, NULL, NULL, errstrp);
+}
diff --git a/lib/util/strtomode.c b/lib/util/strtomode.c
new file mode 100644
index 0000000..1e35d34
--- /dev/null
+++ b/lib/util/strtomode.c
@@ -0,0 +1,65 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+
+#include <stdlib.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+
+/*
+ * Parse an octal file mode in the range [0, 0777].
+ * On success, returns the parsed mode and clears errstr.
+ * On error, returns 0 and sets errstr.
+ */
+int
+sudo_strtomode_v1(const char *cp, const char **errstr)
+{
+    char *ep;
+    long lval;
+    debug_decl(sudo_strtomode, SUDO_DEBUG_UTIL);
+
+    errno = 0;
+    lval = strtol(cp, &ep, 8);
+    if (ep == cp || *ep != '\0') {
+	if (errstr != NULL)
+	    *errstr = N_("invalid value");
+	errno = EINVAL;
+	debug_return_int(0);
+    }
+    if (lval < 0 || lval > ACCESSPERMS) {
+	if (errstr != NULL)
+	    *errstr = lval < 0 ? N_("value too small") : N_("value too large");
+	errno = ERANGE;
+	debug_return_int(0);
+    }
+    if (errstr != NULL)
+	*errstr = NULL;
+    debug_return_int((int)lval);
+}
diff --git a/lib/util/strtonum.c b/lib/util/strtonum.c
new file mode 100644
index 0000000..12edbbe
--- /dev/null
+++ b/lib/util/strtonum.c
@@ -0,0 +1,193 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2013-2015, 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <ctype.h>
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_gettext.h"
+#include "sudo_util.h"
+
+enum strtonum_err {
+    STN_INITIAL,
+    STN_VALID,
+    STN_INVALID,
+    STN_TOOSMALL,
+    STN_TOOBIG
+};
+
+/*
+ * Convert a string to a number in the range [minval, maxval]
+ * Unlike strtonum(), this returns the first non-digit in endp (if not NULL).
+ */
+long long
+sudo_strtonumx(const char *str, long long minval, long long maxval, char **endp,
+    const char **errstrp)
+{
+    enum strtonum_err errval = STN_INITIAL;
+    long long lastval, result = 0;
+    const char *cp = str;
+    unsigned char ch;
+    int remainder;
+    char sign;
+
+    if (minval > maxval) {
+	errval = STN_INVALID;
+	goto done;
+    }
+
+    /* Trim leading space and check sign, if any. */
+    do {
+	ch = *cp++;
+    } while (isspace(ch));
+    switch (ch) {
+    case '-':
+	sign = '-';
+	ch = *cp++;
+	break;
+    case '+':
+	ch = *cp++;
+	FALLTHROUGH;
+    default:
+	sign = '+';
+	break;
+    }
+
+    /*
+     * To prevent overflow we determine the highest (or lowest in
+     * the case of negative numbers) value result can have *before*
+     * if its multiplied (divided) by 10 as well as the remainder.
+     * If result matches this value and the next digit is larger than
+     * the remainder, we know the result is out of range.
+     * The remainder is always positive since it is compared against
+     * an unsigned digit.
+     */
+    if (sign == '-') {
+	lastval = minval / 10;
+	remainder = -(minval % 10);
+	if (remainder < 0) {
+	    lastval += 1;
+	    remainder += 10;
+	}
+	for (;; ch = *cp++) {
+	    if (!isdigit(ch))
+		break;
+	    ch -= '0';
+	    if (result < lastval || (result == lastval && ch > remainder)) {
+		/* Skip remaining digits. */
+		do {
+		    ch = *cp++;
+		} while (isdigit(ch));
+		errval = STN_TOOSMALL;
+		break;
+	    } else {
+		result *= 10;
+		result -= ch;
+		errval = STN_VALID;
+	    }
+	}
+	if (result > maxval)
+	    errval = STN_TOOBIG;
+    } else {
+	lastval = maxval / 10;
+	remainder = maxval % 10;
+	for (;; ch = *cp++) {
+	    if (!isdigit(ch))
+		break;
+	    ch -= '0';
+	    if (result > lastval || (result == lastval && ch > remainder)) {
+		/* Skip remaining digits. */
+		do {
+		    ch = *cp++;
+		} while (isdigit(ch));
+		errval = STN_TOOBIG;
+		break;
+	    } else {
+		result *= 10;
+		result += ch;
+		errval = STN_VALID;
+	    }
+	}
+	if (result < minval)
+	    errval = STN_TOOSMALL;
+    }
+
+done:
+    switch (errval) {
+    case STN_INITIAL:
+    case STN_VALID:
+	if (errstrp != NULL)
+	    *errstrp = NULL;
+	break;
+    case STN_INVALID:
+	result = 0;
+	errno = EINVAL;
+	if (errstrp != NULL)
+	    *errstrp = N_("invalid value");
+	break;
+    case STN_TOOSMALL:
+	result = 0;
+	errno = ERANGE;
+	if (errstrp != NULL)
+	    *errstrp = N_("value too small");
+	break;
+    case STN_TOOBIG:
+	result = 0;
+	errno = ERANGE;
+	if (errstrp != NULL)
+	    *errstrp = N_("value too large");
+	break;
+    }
+    if (endp != NULL) {
+	if (errval == STN_INITIAL || errval == STN_INVALID)
+	    *endp = (char *)str;
+	else
+	    *endp = (char *)(cp - 1);
+    }
+    return result;
+}
+
+/*
+ * Convert a string to a number in the range [minval, maxval]
+ */
+long long
+sudo_strtonum(const char *str, long long minval, long long maxval,
+    const char **errstrp)
+{
+    const char *errstr;
+    char *ep;
+    long long ret;
+
+    ret = sudo_strtonumx(str, minval, maxval, &ep, &errstr);
+    /* Check for empty string and terminating NUL. */
+    if (str == ep || *ep != '\0') {
+	errno = EINVAL;
+	errstr = N_("invalid value");
+	ret = 0;
+    }
+    if (errstrp != NULL)
+	*errstrp = errstr;
+    return ret;
+}
diff --git a/lib/util/sudo_conf.c b/lib/util/sudo_conf.c
new file mode 100644
index 0000000..9c56120
--- /dev/null
+++ b/lib/util/sudo_conf.c
@@ -0,0 +1,776 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2009-2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include "compat/stdbool.h"
+#endif
+#include <string.h>
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#define SUDO_ERROR_WRAP	0
+
+#include "sudo_compat.h"
+#include "sudo_conf.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+#include "pathnames.h"
+
+#ifndef _PATH_SUDO_INTERCEPT
+# define _PATH_SUDO_INTERCEPT NULL
+#endif
+#ifndef _PATH_SUDO_NOEXEC
+# define _PATH_SUDO_NOEXEC NULL
+#endif
+
+struct sudo_conf_table {
+    const char *name;
+    unsigned int namelen;
+    int (*parser)(const char *entry, const char *conf_file, unsigned int lineno);
+};
+
+struct sudo_conf_path_table {
+    const char *pname;
+    unsigned int pnamelen;
+    bool dynamic;
+    const char *pval;
+};
+
+struct sudo_conf_settings {
+    bool updated;
+    bool disable_coredump;
+    bool probe_interfaces;
+    int group_source;
+    int max_groups;
+};
+
+static int parse_debug(const char *entry, const char *conf_file, unsigned int lineno);
+static int parse_path(const char *entry, const char *conf_file, unsigned int lineno);
+static int parse_plugin(const char *entry, const char *conf_file, unsigned int lineno);
+static int parse_variable(const char *entry, const char *conf_file, unsigned int lineno);
+
+static struct sudo_conf_table sudo_conf_table[] = {
+    { "Debug", sizeof("Debug") - 1, parse_debug },
+    { "Path", sizeof("Path") - 1, parse_path },
+    { "Plugin", sizeof("Plugin") - 1, parse_plugin },
+    { "Set", sizeof("Set") - 1, parse_variable },
+    { NULL }
+};
+
+static int set_var_disable_coredump(const char *entry, const char *conf_file, unsigned int);
+static int set_var_group_source(const char *entry, const char *conf_file, unsigned int);
+static int set_var_max_groups(const char *entry, const char *conf_file, unsigned int);
+static int set_var_probe_interfaces(const char *entry, const char *conf_file, unsigned int);
+
+static struct sudo_conf_table sudo_conf_var_table[] = {
+    { "disable_coredump", sizeof("disable_coredump") - 1, set_var_disable_coredump },
+    { "group_source", sizeof("group_source") - 1, set_var_group_source },
+    { "max_groups", sizeof("max_groups") - 1, set_var_max_groups },
+    { "probe_interfaces", sizeof("probe_interfaces") - 1, set_var_probe_interfaces },
+    { NULL }
+};
+
+/* Indexes into path_table[] below (order is important). */
+#define SUDO_CONF_PATH_ASKPASS		0
+#define SUDO_CONF_PATH_SESH		1
+#define SUDO_CONF_PATH_INTERCEPT	2
+#define SUDO_CONF_PATH_NOEXEC		3
+#define SUDO_CONF_PATH_PLUGIN_DIR	4
+#define SUDO_CONF_PATH_DEVSEARCH	5
+
+#define SUDO_CONF_PATH_INITIALIZER	{				\
+    { "askpass", sizeof("askpass") - 1, false, _PATH_SUDO_ASKPASS },	\
+    { "sesh", sizeof("sesh") - 1, false, _PATH_SUDO_SESH },		\
+    { "intercept", sizeof("intercept") - 1, false, _PATH_SUDO_INTERCEPT },	\
+    { "noexec", sizeof("noexec") - 1, false, _PATH_SUDO_NOEXEC },	\
+    { "plugin_dir", sizeof("plugin_dir") - 1, false, _PATH_SUDO_PLUGIN_DIR }, \
+    { "devsearch", sizeof("devsearch") - 1, false, _PATH_SUDO_DEVSEARCH }, \
+    { NULL } \
+}
+
+/*
+ * getgroups(2) on macOS is flakey with respect to non-local groups. 
+ * Even with _DARWIN_UNLIMITED_GETGROUPS set we may not get all groups./
+ * See bug #946 for details.
+ */
+#ifdef __APPLE__
+# define GROUP_SOURCE_DEFAULT	GROUP_SOURCE_DYNAMIC
+#else
+# define GROUP_SOURCE_DEFAULT	GROUP_SOURCE_ADAPTIVE
+#endif
+
+#define SUDO_CONF_SETTINGS_INITIALIZER	{				\
+    false,			/* updated */				\
+    true,			/* disable_coredump */			\
+    true,			/* probe_interfaces */			\
+    GROUP_SOURCE_DEFAULT,	/* group_source */			\
+    -1				/* max_groups */			\
+}
+
+static struct sudo_conf_data {
+    struct sudo_conf_settings settings;
+    struct sudo_conf_debug_list debugging;
+    struct plugin_info_list plugins;
+    struct sudo_conf_path_table path_table[7];
+} sudo_conf_data = {
+    SUDO_CONF_SETTINGS_INITIALIZER,
+    TAILQ_HEAD_INITIALIZER(sudo_conf_data.debugging),
+    TAILQ_HEAD_INITIALIZER(sudo_conf_data.plugins),
+    SUDO_CONF_PATH_INITIALIZER
+};
+
+/*
+ * "Set variable_name value"
+ */
+static int
+parse_variable(const char *entry, const char *conf_file, unsigned int lineno)
+{
+    struct sudo_conf_table *var;
+    int ret;
+    debug_decl(parse_variable, SUDO_DEBUG_UTIL);
+
+    for (var = sudo_conf_var_table; var->name != NULL; var++) {
+	if (strncmp(entry, var->name, var->namelen) == 0 &&
+	    isblank((unsigned char)entry[var->namelen])) {
+	    entry += var->namelen + 1;
+	    while (isblank((unsigned char)*entry))
+		entry++;
+	    ret = var->parser(entry, conf_file, lineno);
+	    sudo_debug_printf(ret ? SUDO_DEBUG_INFO : SUDO_DEBUG_ERROR,
+		"%s: %s:%u: Set %s %s", __func__, conf_file,
+		lineno, var->name, entry);
+	    debug_return_int(ret);
+	}
+    }
+    sudo_debug_printf(SUDO_DEBUG_WARN, "%s: %s:%u: unknown setting %s",
+	__func__, conf_file, lineno, entry);
+    debug_return_int(false);
+}
+
+/*
+ * "Path name /path/to/file"
+ * If path is missing it will be set to the NULL pointer.
+ */
+static int
+parse_path(const char *entry, const char *conf_file, unsigned int lineno)
+{
+    const char *entry_end = entry + strlen(entry);
+    const char *ep, *name, *path;
+    struct sudo_conf_path_table *cur;
+    size_t namelen;
+    debug_decl(parse_path, SUDO_DEBUG_UTIL);
+
+    /* Parse name. */
+    name = sudo_strsplit(entry, entry_end, " \t", &ep);
+    if (name == NULL)
+	goto bad;
+    namelen = (size_t)(ep - name);
+
+    /* Parse path (if present). */
+    path = sudo_strsplit(NULL, entry_end, " \t", &ep);
+
+    /* Match supported paths, ignoring unknown paths. */
+    for (cur = sudo_conf_data.path_table; cur->pname != NULL; cur++) {
+	if (namelen == cur->pnamelen &&
+	    strncasecmp(name, cur->pname, cur->pnamelen) == 0) {
+	    char *pval = NULL;
+	    if (path != NULL) {
+		if ((pval = strdup(path)) == NULL) {
+		    sudo_warnx(U_("%s: %s"), __func__,
+			U_("unable to allocate memory"));
+		    debug_return_int(-1);
+		}
+	    }
+	    if (cur->dynamic)
+		free((char *)cur->pval);
+	    cur->pval = pval;
+	    cur->dynamic = true;
+	    sudo_debug_printf(SUDO_DEBUG_INFO, "%s: %s:%u: Path %s %s",
+		__func__, conf_file, lineno, cur->pname,
+		pval ? pval : "(none)");
+	    debug_return_int(true);
+	}
+    }
+    sudo_debug_printf(SUDO_DEBUG_WARN, "%s: %s:%u: unknown path %s",
+	__func__, conf_file, lineno, entry);
+    debug_return_int(false);
+bad:
+    sudo_warnx(U_("invalid Path value \"%s\" in %s, line %u"),
+	entry, conf_file, lineno);
+    debug_return_int(false);
+}
+
+/*
+ * "Debug program /path/to/log flags,..."
+ */
+static int
+parse_debug(const char *entry, const char *conf_file, unsigned int lineno)
+{
+    struct sudo_conf_debug *debug_spec;
+    struct sudo_debug_file *debug_file = NULL;
+    const char *ep, *path, *progname, *flags;
+    const char *entry_end = entry + strlen(entry);
+    size_t pathlen, prognamelen;
+    debug_decl(parse_debug, SUDO_DEBUG_UTIL);
+
+    /* Parse progname. */
+    progname = sudo_strsplit(entry, entry_end, " \t", &ep);
+    if (progname == NULL)
+	debug_return_int(false);	/* not enough fields */
+    prognamelen = (size_t)(ep - progname);
+
+    /* Parse path. */
+    path = sudo_strsplit(NULL, entry_end, " \t", &ep);
+    if (path == NULL)
+	debug_return_int(false);	/* not enough fields */
+    pathlen = (size_t)(ep - path);
+
+    /* Remainder is flags (freeform). */
+    flags = sudo_strsplit(NULL, entry_end, " \t", &ep);
+    if (flags == NULL)
+	debug_return_int(false);	/* not enough fields */
+
+    /* If progname already exists, use it, else alloc a new one. */
+    TAILQ_FOREACH(debug_spec, &sudo_conf_data.debugging, entries) {
+	if (strncmp(debug_spec->progname, progname, prognamelen) == 0 &&
+	    debug_spec->progname[prognamelen] == '\0')
+	    break;
+    }
+    if (debug_spec == NULL) {
+	debug_spec = malloc(sizeof(*debug_spec));
+	if (debug_spec == NULL)
+	    goto oom;
+	debug_spec->progname = strndup(progname, prognamelen);
+	if (debug_spec->progname == NULL) {
+	    free(debug_spec);
+	    debug_spec = NULL;
+	    goto oom;
+	}
+	TAILQ_INIT(&debug_spec->debug_files);
+	TAILQ_INSERT_TAIL(&sudo_conf_data.debugging, debug_spec, entries);
+    }
+    debug_file = calloc(1, sizeof(*debug_file));
+    if (debug_file == NULL)
+	goto oom;
+    debug_file->debug_file = strndup(path, pathlen);
+    if (debug_file->debug_file == NULL)
+	goto oom;
+    debug_file->debug_flags = strdup(flags);
+    if (debug_file->debug_flags == NULL)
+	goto oom;
+    TAILQ_INSERT_TAIL(&debug_spec->debug_files, debug_file, entries);
+
+    debug_return_int(true);
+oom:
+    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+    if (debug_file != NULL) {
+	free(debug_file->debug_file);
+	free(debug_file->debug_flags);
+	free(debug_file);
+    }
+    debug_return_int(-1);
+}
+
+/*
+ * "Plugin symbol /path/to/log args..."
+ */
+static int
+parse_plugin(const char *entry, const char *conf_file, unsigned int lineno)
+{
+    struct plugin_info *info = NULL;
+    const char *ep, *path, *symbol;
+    const char *entry_end = entry + strlen(entry);
+    char **options = NULL;
+    size_t pathlen, symlen;
+    unsigned int nopts = 0;
+    debug_decl(parse_plugin, SUDO_DEBUG_UTIL);
+
+    /* Parse symbol. */
+    symbol = sudo_strsplit(entry, entry_end, " \t", &ep);
+    if (symbol == NULL)
+	debug_return_int(false);	/* not enough fields */
+    symlen = (size_t)(ep - symbol);
+
+    /* Parse path. */
+    path = sudo_strsplit(NULL, entry_end, " \t", &ep);
+    if (path == NULL)
+	debug_return_int(false);	/* not enough fields */
+    pathlen = (size_t)(ep - path);
+
+    /* Split options into an array if present. */
+    while (isblank((unsigned char)*ep))
+	ep++;
+    if (*ep != '\0') {
+	/* Count number of options and allocate array. */
+	const char *cp, *opt = ep;
+
+	/* Count and allocate options array. */
+	for (nopts = 0, cp = sudo_strsplit(opt, entry_end, " \t", &ep);
+	    cp != NULL; cp = sudo_strsplit(NULL, entry_end, " \t", &ep)) {
+	    nopts++;
+	}
+	options = reallocarray(NULL, nopts + 1, sizeof(*options));
+	if (options == NULL)
+	    goto oom;
+
+	/* Fill in options array. */
+	for (nopts = 0, cp = sudo_strsplit(opt, entry_end, " \t", &ep);
+	    cp != NULL; cp = sudo_strsplit(NULL, entry_end, " \t", &ep)) {
+	    options[nopts] = strndup(cp, (size_t)(ep - cp));
+	    if (options[nopts] == NULL)
+		goto oom;
+	    nopts++;
+	}
+	options[nopts] = NULL;
+    }
+
+    info = calloc(sizeof(*info), 1);
+    if (info == NULL)
+	    goto oom;
+    info->symbol_name = strndup(symbol, symlen);
+    if (info->symbol_name == NULL)
+	    goto oom;
+    info->path = strndup(path, pathlen);
+    if (info->path == NULL)
+	    goto oom;
+    info->options = options;
+    info->lineno = lineno;
+    TAILQ_INSERT_TAIL(&sudo_conf_data.plugins, info, entries);
+
+    debug_return_int(true);
+oom:
+    sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+    if (options != NULL) {
+	while (nopts--)
+	    free(options[nopts]);
+	free(options);
+    }
+    if (info != NULL) {
+	free(info->symbol_name);
+	free(info->path);
+	free(info);
+    }
+    debug_return_int(-1);
+}
+
+static int
+set_var_disable_coredump(const char *strval, const char *conf_file,
+    unsigned int lineno)
+{
+    int val = sudo_strtobool(strval);
+    debug_decl(set_var_disable_coredump, SUDO_DEBUG_UTIL);
+
+    if (val == -1) {
+	sudo_warnx(U_("invalid value for %s \"%s\" in %s, line %u"),
+	    "disable_coredump", strval, conf_file, lineno);
+	debug_return_int(false);
+    }
+    sudo_conf_data.settings.disable_coredump = val;
+    debug_return_int(true);
+}
+
+static int
+set_var_group_source(const char *strval, const char *conf_file,
+    unsigned int lineno)
+{
+    debug_decl(set_var_group_source, SUDO_DEBUG_UTIL);
+
+    if (strcasecmp(strval, "adaptive") == 0) {
+	sudo_conf_data.settings.group_source = GROUP_SOURCE_ADAPTIVE;
+    } else if (strcasecmp(strval, "static") == 0) {
+	sudo_conf_data.settings.group_source = GROUP_SOURCE_STATIC;
+    } else if (strcasecmp(strval, "dynamic") == 0) {
+	sudo_conf_data.settings.group_source = GROUP_SOURCE_DYNAMIC;
+    } else {
+	sudo_warnx(U_("unsupported group source \"%s\" in %s, line %u"), strval,
+	    conf_file, lineno);
+	debug_return_int(false);
+    }
+    debug_return_int(true);
+}
+
+static int
+set_var_max_groups(const char *strval, const char *conf_file,
+    unsigned int lineno)
+{
+    int max_groups;
+    debug_decl(set_var_max_groups, SUDO_DEBUG_UTIL);
+
+    max_groups = sudo_strtonum(strval, 1, 1024, NULL);
+    if (max_groups <= 0) {
+	sudo_warnx(U_("invalid max groups \"%s\" in %s, line %u"), strval,
+	    conf_file, lineno);
+	debug_return_int(false);
+    }
+    sudo_conf_data.settings.max_groups = max_groups;
+    debug_return_int(true);
+}
+
+static int
+set_var_probe_interfaces(const char *strval, const char *conf_file,
+    unsigned int lineno)
+{
+    int val = sudo_strtobool(strval);
+    debug_decl(set_var_probe_interfaces, SUDO_DEBUG_UTIL);
+
+    if (val == -1) {
+	sudo_warnx(U_("invalid value for %s \"%s\" in %s, line %u"),
+	    "probe_interfaces", strval, conf_file, lineno);
+	debug_return_int(false);
+    }
+    sudo_conf_data.settings.probe_interfaces = val;
+    debug_return_int(true);
+}
+
+const char *
+sudo_conf_askpass_path_v1(void)
+{
+    return sudo_conf_data.path_table[SUDO_CONF_PATH_ASKPASS].pval;
+}
+
+const char *
+sudo_conf_sesh_path_v1(void)
+{
+    return sudo_conf_data.path_table[SUDO_CONF_PATH_SESH].pval;
+}
+
+const char *
+sudo_conf_intercept_path_v1(void)
+{
+    return sudo_conf_data.path_table[SUDO_CONF_PATH_INTERCEPT].pval;
+}
+
+const char *
+sudo_conf_noexec_path_v1(void)
+{
+    return sudo_conf_data.path_table[SUDO_CONF_PATH_NOEXEC].pval;
+}
+
+const char *
+sudo_conf_plugin_dir_path_v1(void)
+{
+    return sudo_conf_data.path_table[SUDO_CONF_PATH_PLUGIN_DIR].pval;
+}
+
+const char *
+sudo_conf_devsearch_path_v1(void)
+{
+    return sudo_conf_data.path_table[SUDO_CONF_PATH_DEVSEARCH].pval;
+}
+
+int
+sudo_conf_group_source_v1(void)
+{
+    return sudo_conf_data.settings.group_source;
+}
+
+int
+sudo_conf_max_groups_v1(void)
+{
+    return sudo_conf_data.settings.max_groups;
+}
+
+struct plugin_info_list *
+sudo_conf_plugins_v1(void)
+{
+    return &sudo_conf_data.plugins;
+}
+
+struct sudo_conf_debug_list *
+sudo_conf_debugging_v1(void)
+{
+    return &sudo_conf_data.debugging;
+}
+
+/* Return the debug files list for a program, or NULL if none. */
+struct sudo_conf_debug_file_list *
+sudo_conf_debug_files_v1(const char *progname)
+{
+    struct sudo_conf_debug *debug_spec;
+    const char *progbase;
+    debug_decl(sudo_conf_debug_files, SUDO_DEBUG_UTIL);
+
+    /* Determine basename if program is fully qualified (like for plugins). */
+    progbase = progname[0] == '/' ? sudo_basename(progname) : progname;
+
+    /* Convert sudoedit -> sudo. */
+    if (strcmp(progbase, "sudoedit") == 0)
+	progbase = "sudo";
+
+    TAILQ_FOREACH(debug_spec, &sudo_conf_data.debugging, entries) {
+	const char *prog = progbase;
+
+	if (debug_spec->progname[0] == '/') {
+	    /* Match fully-qualified name, if possible. */
+	    prog = progname;
+	}
+	if (strcmp(debug_spec->progname, prog) == 0)
+	    debug_return_ptr(&debug_spec->debug_files);
+    }
+    debug_return_ptr(NULL);
+}
+
+bool
+sudo_conf_developer_mode_v1(void)
+{
+    /* Developer mode was removed in sudo 1.9.13. */
+    return false;
+}
+
+bool
+sudo_conf_disable_coredump_v1(void)
+{
+    return sudo_conf_data.settings.disable_coredump;
+}
+
+bool
+sudo_conf_probe_interfaces_v1(void)
+{
+    return sudo_conf_data.settings.probe_interfaces;
+}
+
+/*
+ * Free dynamically allocated parts of sudo_conf_data and
+ * reset to initial values.
+ */
+static void
+sudo_conf_init(int conf_types)
+{
+    struct sudo_conf_debug *debug_spec;
+    struct sudo_debug_file *debug_file;
+    struct plugin_info *plugin_info;
+    int i;
+    debug_decl(sudo_conf_init, SUDO_DEBUG_UTIL);
+
+    /* Free and reset paths. */
+    if (ISSET(conf_types, SUDO_CONF_PATHS)) {
+	const struct sudo_conf_path_table path_table[] = SUDO_CONF_PATH_INITIALIZER;
+	sudo_conf_clear_paths();
+	memcpy(sudo_conf_data.path_table, path_table,
+	    sizeof(sudo_conf_data.path_table));
+    }
+
+    /* Free and reset debug settings. */
+    if (ISSET(conf_types, SUDO_CONF_DEBUG)) {
+	while ((debug_spec = TAILQ_FIRST(&sudo_conf_data.debugging))) {
+	    TAILQ_REMOVE(&sudo_conf_data.debugging, debug_spec, entries);
+	    free(debug_spec->progname);
+	    while ((debug_file = TAILQ_FIRST(&debug_spec->debug_files))) {
+		TAILQ_REMOVE(&debug_spec->debug_files, debug_file, entries);
+		free(debug_file->debug_file);
+		free(debug_file->debug_flags);
+		free(debug_file);
+	    }
+	    free(debug_spec);
+	}
+    }
+
+    /* Free and reset plugins. */
+    if (ISSET(conf_types, SUDO_CONF_PLUGINS)) {
+	while ((plugin_info = TAILQ_FIRST(&sudo_conf_data.plugins))) {
+	    TAILQ_REMOVE(&sudo_conf_data.plugins, plugin_info, entries);
+	    free(plugin_info->symbol_name);
+	    free(plugin_info->path);
+	    if (plugin_info->options != NULL) {
+		for (i = 0; plugin_info->options[i] != NULL; i++)
+		    free(plugin_info->options[i]);
+		free(plugin_info->options);
+	    }
+	    free(plugin_info);
+	}
+    }
+
+    /* Set initial values. */
+    if (ISSET(conf_types, SUDO_CONF_SETTINGS)) {
+	const struct sudo_conf_settings settings = SUDO_CONF_SETTINGS_INITIALIZER;
+	sudo_conf_data.settings = settings;
+    }
+
+    debug_return;
+}
+
+/*
+ * Read in /etc/sudo.conf and populates sudo_conf_data.
+ */
+int
+sudo_conf_read_v1(const char *conf_file, int conf_types)
+{
+    FILE *fp = NULL;
+    int fd, ret = false;
+    char *prev_locale, *line = NULL;
+    unsigned int conf_lineno = 0;
+    size_t linesize = 0;
+    debug_decl(sudo_conf_read, SUDO_DEBUG_UTIL);
+
+    if ((prev_locale = setlocale(LC_ALL, NULL)) == NULL) {
+	sudo_warn("setlocale(LC_ALL, NULL)");
+	debug_return_int(-1);
+    }
+    if ((prev_locale = strdup(prev_locale)) == NULL) {
+	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
+	debug_return_int(-1);
+    }
+
+    /* Parse sudo.conf in the "C" locale. */
+    if (prev_locale[0] != 'C' || prev_locale[1] != '\0')
+        setlocale(LC_ALL, "C");
+
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+    if (conf_file == NULL) {
+	struct stat sb;
+	int error;
+
+	conf_file = _PATH_SUDO_CONF;
+	fd = sudo_secure_open_file(conf_file, ROOT_UID, -1, &sb, &error);
+	if (fd == -1) {
+	    switch (error) {
+	    case SUDO_PATH_MISSING:
+		/* Root should always be able to read sudo.conf. */
+		if (errno != ENOENT && geteuid() == ROOT_UID)
+		    sudo_warn(U_("unable to open %s"), conf_file);
+		break;
+	    case SUDO_PATH_BAD_TYPE:
+		sudo_warnx(U_("%s is not a regular file"), conf_file);
+		break;
+	    case SUDO_PATH_WRONG_OWNER:
+		sudo_warnx(U_("%s is owned by uid %u, should be %u"),
+		    conf_file, (unsigned int) sb.st_uid, ROOT_UID);
+		break;
+	    case SUDO_PATH_WORLD_WRITABLE:
+		sudo_warnx(U_("%s is world writable"), conf_file);
+		break;
+	    case SUDO_PATH_GROUP_WRITABLE:
+		sudo_warnx(U_("%s is group writable"), conf_file);
+		break;
+	    default:
+		sudo_warnx("%s: internal error, unexpected error %d",
+		    __func__, error);
+		break;
+	    }
+	    goto done;
+	}
+    } else
+#else
+    if (conf_file == NULL)
+	conf_file = _PATH_SUDO_CONF;
+#endif /* FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
+    {
+	fd = open(conf_file, O_RDONLY);
+	if (fd == -1) {
+	    sudo_warn(U_("unable to open %s"), conf_file);
+	    goto done;
+	}
+    }
+
+    if ((fp = fdopen(fd, "r")) == NULL) {
+	if (errno != ENOENT && geteuid() == ROOT_UID)
+	    sudo_warn(U_("unable to open %s"), conf_file);
+	close(fd);
+	goto done;
+    }
+
+    /* Reset to initial values if necessary. */
+    if (sudo_conf_data.settings.updated)
+	sudo_conf_init(conf_types);
+
+    while (sudo_parseln(&line, &linesize, &conf_lineno, fp, 0) != -1) {
+	struct sudo_conf_table *cur;
+	unsigned int i;
+	char *cp;
+
+	if (*(cp = line) == '\0')
+	    continue;		/* empty line or comment */
+
+	for (i = 0, cur = sudo_conf_table; cur->name != NULL; i++, cur++) {
+	    if (strncasecmp(cp, cur->name, cur->namelen) == 0 &&
+		isblank((unsigned char)cp[cur->namelen])) {
+		if (ISSET(conf_types, (1 << i))) {
+		    cp += cur->namelen;
+		    while (isblank((unsigned char)*cp))
+			cp++;
+		    ret = cur->parser(cp, conf_file, conf_lineno);
+		    switch (ret) {
+		    case true:
+			sudo_conf_data.settings.updated = true;
+			break;
+		    case false:
+			break;
+		    default:
+			goto done;
+		    }
+		}
+		break;
+	    }
+	}
+	if (cur->name == NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_WARN,
+		"%s: %s:%u: unsupported entry: %s", __func__, conf_file,
+		conf_lineno, line);
+	}
+    }
+    ret = true;
+
+done:
+    if (fp != NULL)
+	fclose(fp);
+    free(line);
+
+    /* Restore locale if needed. */
+    if (prev_locale[0] != 'C' || prev_locale[1] != '\0')
+        setlocale(LC_ALL, prev_locale);
+    free(prev_locale);
+    debug_return_int(ret);
+}
+
+/*
+ * Used by the sudo_conf regress test to clear compile-time path settings.
+ */
+void
+sudo_conf_clear_paths_v1(void)
+{
+    struct sudo_conf_path_table *cur;
+    debug_decl(sudo_conf_clear_paths, SUDO_DEBUG_UTIL);
+
+    for (cur = sudo_conf_data.path_table; cur->pname != NULL; cur++) {
+	if (cur->dynamic)
+	    free((char *)cur->pval);
+	cur->pval = NULL;
+	cur->dynamic = false;
+    }
+}
diff --git a/lib/util/sudo_debug.c b/lib/util/sudo_debug.c
new file mode 100644
index 0000000..c06ba8c
--- /dev/null
+++ b/lib/util/sudo_debug.c
@@ -0,0 +1,1167 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2017 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_conf.h"
+#include "sudo_debug.h"
+#include "sudo_fatal.h"
+#include "sudo_gettext.h"
+#include "sudo_plugin.h"
+#include "sudo_util.h"
+
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+/*
+ * The debug priorities and subsystems are currently hard-coded.
+ * In the future we might consider allowing plugins to register their
+ * own subsystems and provide direct access to the debugging API.
+ */
+
+/* Note: this must match the order in sudo_debug.h */
+static const char *const sudo_debug_priorities[] = {
+    "crit",
+    "err",
+    "warn",
+    "notice",
+    "diag",
+    "info",
+    "trace",
+    "debug",
+    NULL
+};
+
+/* Note: this must match the order in sudo_debug.h */
+static const char *const sudo_debug_default_subsystems[] = {
+    "args",
+    "conv",
+    "edit",
+    "event",
+    "exec",
+    "hooks",
+    "main",
+    "netif",
+    "pcomm",
+    "plugin",
+    "pty",
+    "selinux",
+    "util",
+    "utmp",
+    NULL
+};
+
+#define NUM_DEF_SUBSYSTEMS	(nitems(sudo_debug_default_subsystems) - 1)
+
+/*
+ * For multiple programs/plugins there is a per-program instance
+ * and one or more outputs (files).
+ */
+struct sudo_debug_output {
+    SLIST_ENTRY(sudo_debug_output) entries;
+    char *filename;
+    int *settings;
+    int fd;
+};
+SLIST_HEAD(sudo_debug_output_list, sudo_debug_output);
+struct sudo_debug_instance {
+    char *program;
+    const char *const *subsystems;
+    const unsigned int *subsystem_ids;
+    unsigned int max_subsystem;
+    unsigned int refcnt;
+    struct sudo_debug_output_list outputs;
+};
+
+/* Support up to 10 instances. */
+#define SUDO_DEBUG_INSTANCE_MAX 10
+static struct sudo_debug_instance *sudo_debug_instances[SUDO_DEBUG_INSTANCE_MAX];
+static int sudo_debug_last_instance = -1;
+
+static char sudo_debug_pidstr[(((sizeof(int) * 8) + 2) / 3) + 3];
+static size_t sudo_debug_pidlen;
+
+#define round_nfds(_n)	(((_n) + (4 * NBBY) - 1) & ~((4 * NBBY) - 1))
+static int sudo_debug_fds_size;
+static unsigned char *sudo_debug_fds;
+static int sudo_debug_max_fd = -1;
+
+/* Default instance index to use for common utility functions. */
+static int sudo_debug_active_instance = -1;
+
+/*
+ * Free the specified output structure.
+ */
+static void
+sudo_debug_free_output(struct sudo_debug_output *output)
+{
+    free(output->filename);
+    free(output->settings);
+    if (output->fd != -1)
+	close(output->fd);
+    free(output);
+}
+
+/*
+ * Create a new output file for the specified debug instance.
+ * Returns NULL if the file cannot be opened or memory cannot be allocated.
+ * XXX - check for duplicates
+ */
+static struct sudo_debug_output *
+sudo_debug_new_output(struct sudo_debug_instance *instance,
+    struct sudo_debug_file *debug_file, int minfd)
+{
+    char *buf, *cp, *last, *subsys, *pri;
+    struct sudo_debug_output *output;
+    unsigned int j;
+    int i;
+
+    /* Create new output for the instance. */
+    /* XXX - reuse fd for existing filename? */
+    output = calloc(1, sizeof(*output));
+    if (output == NULL)
+	goto oom;
+    output->fd = -1;
+    output->settings = reallocarray(NULL, instance->max_subsystem + 1,
+	sizeof(int));
+    if (output->settings == NULL)
+	goto oom;
+    output->filename = strdup(debug_file->debug_file);
+    if (output->filename == NULL)
+	goto oom;
+
+    /* Init per-subsystems settings to -1 since 0 is a valid priority. */
+    for (j = 0; j <= instance->max_subsystem; j++)
+	output->settings[j] = -1;
+
+    /* Open debug file. */
+    output->fd = open(output->filename, O_WRONLY|O_APPEND, S_IRUSR|S_IWUSR);
+    if (output->fd == -1) {
+	/* Create debug file as needed and set group ownership. */
+	if (errno == ENOENT) {
+	    output->fd = open(output->filename, O_WRONLY|O_APPEND|O_CREAT,
+		S_IRUSR|S_IWUSR);
+	}
+	if (output->fd == -1) {
+	    sudo_warn_nodebug("%s", output->filename);
+	    goto bad;
+	}
+	ignore_result(fchown(output->fd, (uid_t)-1, 0));
+    }
+    if (output->fd < minfd) {
+	int newfd = fcntl(output->fd, F_DUPFD, minfd);
+	if (newfd == -1) {
+	    sudo_warn_nodebug("%s", output->filename);
+	    goto bad;
+	}
+	close(output->fd);
+	output->fd = newfd;
+    }
+    if (fcntl(output->fd, F_SETFD, FD_CLOEXEC) == -1) {
+	sudo_warn_nodebug("%s", output->filename);
+	goto bad;
+    }
+    if (sudo_debug_fds_size < output->fd) {
+	/* Bump fds size to the next multiple of 4 * NBBY. */
+	const int old_size = sudo_debug_fds_size / NBBY;
+	const int new_size = round_nfds(output->fd + 1) / NBBY;
+	unsigned char *new_fds;
+
+	new_fds = realloc(sudo_debug_fds, new_size);
+	if (new_fds == NULL)
+	    goto oom;
+	memset(new_fds + old_size, 0, new_size - old_size);
+	sudo_debug_fds = new_fds;
+	sudo_debug_fds_size = new_size * NBBY;
+    }
+    sudo_setbit(sudo_debug_fds, output->fd);
+    if (output->fd > sudo_debug_max_fd)
+	sudo_debug_max_fd = output->fd;
+
+    /* Parse Debug conf string. */
+    buf = strdup(debug_file->debug_flags);
+    if (buf == NULL)
+	goto oom;
+    for ((cp = strtok_r(buf, ",", &last)); cp != NULL; (cp = strtok_r(NULL, ",", &last))) {
+	/* Should be in the form subsys@pri. */
+	subsys = cp;
+	if ((pri = strchr(cp, '@')) == NULL)
+	    continue;
+	*pri++ = '\0';
+
+	/* Look up priority and subsystem, fill in sudo_debug_settings[]. */
+	for (i = 0; sudo_debug_priorities[i] != NULL; i++) {
+	    if (strcasecmp(pri, sudo_debug_priorities[i]) == 0) {
+		for (j = 0; instance->subsystems[j] != NULL; j++) {
+		    if (strcasecmp(subsys, "all") == 0) {
+			const unsigned int idx = instance->subsystem_ids ?
+			    SUDO_DEBUG_SUBSYS(instance->subsystem_ids[j]) : j;
+			if (i > output->settings[idx])
+			    output->settings[idx] = i;
+			continue;
+		    }
+		    if (strcasecmp(subsys, instance->subsystems[j]) == 0) {
+			const unsigned int idx = instance->subsystem_ids ?
+			    SUDO_DEBUG_SUBSYS(instance->subsystem_ids[j]) : j;
+			if (i > output->settings[idx])
+			    output->settings[idx] = i;
+			break;
+		    }
+		}
+		break;
+	    }
+	}
+    }
+    free(buf);
+
+    return output;
+oom:
+    // -V:sudo_warn_nodebug:575, 618
+    sudo_warn_nodebug(NULL);
+bad:
+    if (output != NULL)
+	sudo_debug_free_output(output);
+    return NULL;
+}
+
+/*
+ * Register a program/plugin with the debug framework,
+ * parses settings string from sudo.conf and opens debug_files.
+ * If subsystem names are specified they override the default values.
+ * NOTE: subsystems must not be freed by caller unless deregistered.
+ * Sets the active instance to the newly registered instance.
+ * Returns instance index on success, SUDO_DEBUG_INSTANCE_INITIALIZER
+ * if no debug files are specified and SUDO_DEBUG_INSTANCE_ERROR
+ * on error.
+ */
+int
+sudo_debug_register_v2(const char *program, const char *const subsystems[],
+    unsigned int ids[], struct sudo_conf_debug_file_list *debug_files,
+    int minfd)
+{
+    struct sudo_debug_instance *instance = NULL;
+    struct sudo_debug_output *output;
+    struct sudo_debug_file *debug_file;
+    int idx, free_idx = -1;
+    debug_decl_func(sudo_debug_register);
+
+    if (debug_files == NULL)
+	return SUDO_DEBUG_INSTANCE_INITIALIZER;
+
+    /* Use default subsystem names if none are provided. */
+    if (subsystems == NULL) {
+	subsystems = sudo_debug_default_subsystems;
+    } else if (ids == NULL) {
+	/* If subsystems are specified we must have ids[] too. */
+	return SUDO_DEBUG_INSTANCE_ERROR;
+    }
+
+    /* Search for existing instance. */
+    for (idx = 0; idx <= sudo_debug_last_instance; idx++) {
+	if (sudo_debug_instances[idx] == NULL) {
+	    free_idx = idx;
+	    continue;
+	}
+	if (sudo_debug_instances[idx]->subsystems == subsystems &&
+	    strcmp(sudo_debug_instances[idx]->program, program) == 0) {
+	    instance = sudo_debug_instances[idx];
+	    break;
+	}
+    }
+
+    if (instance == NULL) {
+	unsigned int i, j, max_id = NUM_DEF_SUBSYSTEMS - 1;
+
+	/* Fill in subsystem name -> id mapping as needed. */
+	if (ids != NULL) {
+	    for (i = 0; subsystems[i] != NULL; i++) {
+		/* Check default subsystems. */
+		for (j = 0; j < NUM_DEF_SUBSYSTEMS; j++) {
+		    if (strcmp(subsystems[i], sudo_debug_default_subsystems[j]) == 0)
+			break;
+		}
+		if (j == NUM_DEF_SUBSYSTEMS)
+		    j = ++max_id;
+		ids[i] = ((j + 1) << 6);
+	    }
+	}
+
+	if (free_idx != -1)
+	    idx = free_idx;
+	if (idx == SUDO_DEBUG_INSTANCE_MAX) {
+	    /* XXX - realloc? */
+	    sudo_warnx_nodebug("too many debug instances (max %d)", SUDO_DEBUG_INSTANCE_MAX);
+	    return SUDO_DEBUG_INSTANCE_ERROR;
+	}
+	if (idx != sudo_debug_last_instance + 1 && idx != free_idx) {
+	    sudo_warnx_nodebug("%s: instance number mismatch: expected %d or %d, got %d", __func__, sudo_debug_last_instance + 1, free_idx, idx);
+	    return SUDO_DEBUG_INSTANCE_ERROR;
+	}
+	if ((instance = malloc(sizeof(*instance))) == NULL)
+	    return SUDO_DEBUG_INSTANCE_ERROR;
+	if ((instance->program = strdup(program)) == NULL) {
+	    free(instance);
+	    return SUDO_DEBUG_INSTANCE_ERROR;
+	}
+	instance->subsystems = subsystems;
+	instance->subsystem_ids = ids;
+	instance->max_subsystem = max_id;
+	instance->refcnt = 1;
+	SLIST_INIT(&instance->outputs);
+	sudo_debug_instances[idx] = instance;
+	if (idx != free_idx)
+	    sudo_debug_last_instance++;
+    } else {
+	/* Check for matching instance but different ids[]. */
+	if (ids != NULL && instance->subsystem_ids != ids) {
+	    unsigned int i;
+
+	    for (i = 0; subsystems[i] != NULL; i++)
+		ids[i] = instance->subsystem_ids[i];
+	}
+	instance->refcnt++;
+    }
+
+    TAILQ_FOREACH(debug_file, debug_files, entries) {
+	output = sudo_debug_new_output(instance, debug_file, minfd);
+	if (output != NULL)
+	    SLIST_INSERT_HEAD(&instance->outputs, output, entries);
+    }
+
+    /* Set active instance. */
+    sudo_debug_active_instance = idx;
+
+    /* Stash the pid string so we only have to format it once. */
+    if (sudo_debug_pidlen == 0) {
+	(void)snprintf(sudo_debug_pidstr, sizeof(sudo_debug_pidstr), "[%d] ",
+	    (int)getpid());
+	sudo_debug_pidlen = strlen(sudo_debug_pidstr);
+    }
+
+    return idx;
+}
+
+int
+sudo_debug_register_v1(const char *program, const char *const subsystems[],
+    unsigned int ids[], struct sudo_conf_debug_file_list *debug_files)
+{
+    return sudo_debug_register_v2(program, subsystems, ids, debug_files, -1);
+}
+
+/*
+ * De-register the specified instance from the debug subsystem
+ * and free up any associated data structures.
+ * Returns the number of remaining references for the instance or -1 on error.
+ */
+int
+sudo_debug_deregister_v1(int idx)
+{
+    struct sudo_debug_instance *instance;
+    struct sudo_debug_output *output, *next;
+    debug_decl_func(sudo_debug_deregister);
+
+    if (idx < 0 || idx > sudo_debug_last_instance) {
+	sudo_warnx_nodebug("%s: invalid instance ID %d, max %d",
+	    __func__, idx, sudo_debug_last_instance);
+	return -1;
+    }
+    /* Reset active instance as needed. */
+    if (sudo_debug_active_instance == idx)
+	sudo_debug_active_instance = -1;
+
+    instance = sudo_debug_instances[idx];
+    if (instance == NULL)
+	return -1;			/* already deregistered */
+
+    if (--instance->refcnt != 0)
+	return instance->refcnt;	/* ref held by other caller */
+
+    /* Free up instance data, note that subsystems[] is owned by caller. */
+    sudo_debug_instances[idx] = NULL;
+    SLIST_FOREACH_SAFE(output, &instance->outputs, entries, next) {
+	close(output->fd);
+	free(output->filename);
+	free(output->settings);
+	free(output);
+    }
+    free(instance->program);
+    free(instance);
+
+    if (idx == sudo_debug_last_instance)
+	sudo_debug_last_instance--;
+
+    return 0;
+}
+
+/*
+ * Parse the "filename flags,..." debug_flags entry from sudo.conf
+ * and insert a new sudo_debug_file struct into the list.
+ * Returns 0 on success, 1 on parse error or -1 on malloc failure.
+ */
+int
+sudo_debug_parse_flags_v1(struct sudo_conf_debug_file_list *debug_files,
+    const char *entry)
+{
+    struct sudo_debug_file *debug_file;
+    const char *filename, *flags;
+    size_t namelen;
+
+    /* Only process new-style debug flags: filename flags,... */
+    filename = entry;
+    if (*filename != '/' || (flags = strpbrk(filename, " \t")) == NULL)
+	return 1;
+    namelen = (size_t)(flags - filename);
+    while (isblank((unsigned char)*flags))
+	flags++;
+    if (*flags != '\0') {
+	if ((debug_file = calloc(1, sizeof(*debug_file))) == NULL)
+	    goto oom;
+	if ((debug_file->debug_file = strndup(filename, namelen)) == NULL)
+	    goto oom;
+	if ((debug_file->debug_flags = strdup(flags)) == NULL)
+	    goto oom;
+	TAILQ_INSERT_TAIL(debug_files, debug_file, entries);
+    }
+    return 0;
+oom:
+    if (debug_file != NULL) {
+	free(debug_file->debug_file);
+	free(debug_file->debug_flags);
+	free(debug_file);
+    }
+    return -1;
+}
+
+int
+sudo_debug_get_instance_v1(const char *program)
+{
+    int idx;
+
+    for (idx = 0; idx <= sudo_debug_last_instance; idx++) {
+	if (sudo_debug_instances[idx] == NULL)
+	    continue;
+	if (strcmp(sudo_debug_instances[idx]->program, program) == 0)
+	    return idx;
+    }
+    return SUDO_DEBUG_INSTANCE_INITIALIZER;
+}
+
+pid_t
+sudo_debug_fork_v1(void)
+{
+    pid_t pid;
+
+    if ((pid = fork()) == 0) {
+	(void)snprintf(sudo_debug_pidstr, sizeof(sudo_debug_pidstr), "[%d] ",
+	    (int)getpid());
+	sudo_debug_pidlen = strlen(sudo_debug_pidstr);
+    }
+
+    return pid;
+}
+
+void
+sudo_debug_enter_v1(const char *func, const char *file, int line,
+    int subsys)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"-> %s @ %s:%d", func, file, line);
+}
+
+void
+sudo_debug_exit_v1(const char *func, const char *file, int line,
+    int subsys)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d", func, file, line);
+}
+
+void
+sudo_debug_exit_int_v1(const char *func, const char *file, int line,
+    int subsys, int ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %d", func, file, line, ret);
+}
+
+void
+sudo_debug_exit_long_v1(const char *func, const char *file, int line,
+    int subsys, long ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %ld", func, file, line, ret);
+}
+
+void
+sudo_debug_exit_id_t_v1(const char *func, const char *file, int line,
+    int subsys, id_t ret)
+{
+#if SIZEOF_ID_T == 8
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %lld", func, file, line, (long long)ret);
+#else
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %d", func, file, line, (int)ret);
+#endif
+}
+
+void
+sudo_debug_exit_size_t_v1(const char *func, const char *file, int line,
+    int subsys, size_t ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %zu", func, file, line, ret);
+}
+
+void
+sudo_debug_exit_ssize_t_v1(const char *func, const char *file, int line,
+    int subsys, ssize_t ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %zd", func, file, line, ret);
+}
+
+void
+sudo_debug_exit_time_t_v1(const char *func, const char *file, int line,
+    int subsys, time_t ret)
+{
+#if SIZEOF_TIME_T == 8
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %lld", func, file, line, (long long)ret);
+#else
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %d", func, file, line, (int)ret);
+#endif
+}
+
+void
+sudo_debug_exit_bool_v1(const char *func, const char *file, int line,
+    int subsys, bool ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %s", func, file, line, ret ? "true" : "false");
+}
+
+void
+sudo_debug_exit_str_v1(const char *func, const char *file, int line,
+    int subsys, const char *ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %s", func, file, line, ret ? ret : "(null)");
+}
+
+void
+sudo_debug_exit_str_masked_v1(const char *func, const char *file, int line,
+    int subsys, const char *ret)
+{
+    static const char stars[] = "********************************************************************************";
+    int len = ret ? strlen(ret) : sizeof("(null)") - 1;
+
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %.*s", func, file, line, len, ret ? stars : "(null)");
+}
+
+void
+sudo_debug_exit_ptr_v1(const char *func, const char *file, int line,
+    int subsys, const void *ret)
+{
+    sudo_debug_printf2(NULL, NULL, 0, subsys | SUDO_DEBUG_TRACE,
+	"<- %s @ %s:%d := %p", func, file, line, ret);
+}
+
+void
+sudo_debug_write2_v1(int fd, const char *func, const char *file, int lineno,
+    const char *str, int len, int errnum)
+{
+    char numbuf[(((sizeof(int) * 8) + 2) / 3) + 2];
+    char timebuf[64];
+    struct timeval tv;
+    struct iovec iov[12];
+    int iovcnt = 3;
+
+    /* Cannot use sudo_gettime_real() here since it calls sudo_debug. */
+    timebuf[0] = '\0';
+    if (gettimeofday(&tv, NULL) != -1) {
+	time_t now = tv.tv_sec;
+	struct tm tm;
+	size_t tlen;
+	if (localtime_r(&now, &tm) != NULL) {
+	    timebuf[sizeof(timebuf) - 1] = '\0';
+	    tlen = strftime(timebuf, sizeof(timebuf), "%b %e %H:%M:%S", &tm);
+	    if (tlen == 0 || timebuf[sizeof(timebuf) - 1] != '\0') {
+		/* contents are undefined on error */
+		timebuf[0] = '\0';
+	    } else {
+		(void)snprintf(timebuf + tlen, sizeof(timebuf) - tlen,
+		    ".%03d ", (int)tv.tv_usec / 1000);
+	    }
+	}
+    }
+    iov[0].iov_base = timebuf;
+    iov[0].iov_len = strlen(timebuf);
+
+    /* Prepend program name and pid with a trailing space. */
+    iov[1].iov_base = (char *)getprogname();
+    iov[1].iov_len = strlen(iov[1].iov_base);
+    iov[2].iov_base = sudo_debug_pidstr;
+    iov[2].iov_len = sudo_debug_pidlen;
+
+    /* Add string, trimming any trailing newlines. */
+    while (len > 0 && str[len - 1] == '\n')
+	len--;
+    if (len > 0) {
+	iov[iovcnt].iov_base = (char *)str;
+	iov[iovcnt].iov_len = len;
+	iovcnt++;
+    }
+
+    /* Append error string if errno is specified. */
+    if (errnum) {
+	if (len > 0) {
+	    iov[iovcnt].iov_base = (char *)": ";
+	    iov[iovcnt].iov_len = 2;
+	    iovcnt++;
+	}
+	iov[iovcnt].iov_base = strerror(errnum);
+	iov[iovcnt].iov_len = strlen(iov[iovcnt].iov_base);
+	iovcnt++;
+    }
+
+    /* If function, file and lineno are specified, append them. */
+    if (func != NULL && file != NULL && lineno != 0) {
+	iov[iovcnt].iov_base = (char *)" @ ";
+	iov[iovcnt].iov_len = 3;
+	iovcnt++;
+
+	iov[iovcnt].iov_base = (char *)func;
+	iov[iovcnt].iov_len = strlen(func);
+	iovcnt++;
+
+	iov[iovcnt].iov_base = (char *)"() ";
+	iov[iovcnt].iov_len = 3;
+	iovcnt++;
+
+	iov[iovcnt].iov_base = (char *)file;
+	iov[iovcnt].iov_len = strlen(file);
+	iovcnt++;
+
+	(void)snprintf(numbuf, sizeof(numbuf), ":%d", lineno);
+	iov[iovcnt].iov_base = numbuf;
+	iov[iovcnt].iov_len = strlen(numbuf);
+	iovcnt++;
+    }
+
+    /* Append newline. */
+    iov[iovcnt].iov_base = (char *)"\n";
+    iov[iovcnt].iov_len = 1;
+    iovcnt++;
+
+    /* Write message in a single syscall */
+    ignore_result(writev(fd, iov, iovcnt));
+}
+
+bool
+sudo_debug_needed_v1(int level)
+{
+    unsigned int subsys;
+    int pri;
+    struct sudo_debug_instance *instance;
+    struct sudo_debug_output *output;
+    bool result = false;
+
+    if (sudo_debug_active_instance == -1)
+        goto out;
+
+    /* Extract priority and subsystem from level. */
+    pri = SUDO_DEBUG_PRI(level);
+    subsys = (unsigned int)SUDO_DEBUG_SUBSYS(level);
+
+    if (sudo_debug_active_instance > sudo_debug_last_instance)
+        goto out;
+
+    instance = sudo_debug_instances[sudo_debug_active_instance];
+    if (instance == NULL)
+        goto out;
+
+    if (subsys <= instance->max_subsystem) {
+        SLIST_FOREACH(output, &instance->outputs, entries) {
+            if (output->settings[subsys] >= pri) {
+                result = true;
+                break;
+            }
+        }
+    }
+out:
+    return result;
+}
+
+void
+sudo_debug_vprintf2_v1(const char *func, const char *file, int lineno, int level,
+    const char *fmt, va_list ap)
+{
+    int buflen, pri, saved_errno = errno;
+    unsigned int subsys;
+    char static_buf[1024], *buf = static_buf;
+    struct sudo_debug_instance *instance;
+    struct sudo_debug_output *output;
+    debug_decl_func(sudo_debug_vprintf2);
+
+    if (sudo_debug_active_instance == -1)
+	goto out;
+
+    /* Extract priority and subsystem from level. */
+    pri = SUDO_DEBUG_PRI(level);
+    subsys = SUDO_DEBUG_SUBSYS(level);
+
+    /* Find matching instance. */
+    if (sudo_debug_active_instance > sudo_debug_last_instance) {
+	sudo_warnx_nodebug("%s: invalid instance ID %d, max %d",
+	    __func__, sudo_debug_active_instance, sudo_debug_last_instance);
+	goto out;
+    }
+    instance = sudo_debug_instances[sudo_debug_active_instance];
+    if (instance == NULL) {
+	sudo_warnx_nodebug("%s: unregistered instance index %d", __func__,
+	    sudo_debug_active_instance);
+	goto out;
+    }
+
+    SLIST_FOREACH(output, &instance->outputs, entries) {
+	/* Make sure we want debug info at this level. */
+	if (subsys <= instance->max_subsystem && output->settings[subsys] >= pri) {
+	    va_list ap2;
+
+	    /* Operate on a copy of ap to support multiple outputs. */
+	    va_copy(ap2, ap);
+	    buflen = fmt ? vsnprintf(static_buf, sizeof(static_buf), fmt, ap2) : 0;
+	    va_end(ap2);
+	    if (buflen >= ssizeof(static_buf)) {
+		va_list ap3;
+
+		/* Not enough room in static buf, allocate dynamically. */
+		va_copy(ap3, ap);
+		buflen = vasprintf(&buf, fmt, ap3);
+		va_end(ap3);
+	    }
+	    if (buflen != -1) {
+		int errcode = ISSET(level, SUDO_DEBUG_ERRNO) ? saved_errno : 0;
+		if (ISSET(level, SUDO_DEBUG_LINENO))
+		    sudo_debug_write2(output->fd, func, file, lineno, buf, buflen, errcode);
+		else
+		    sudo_debug_write2(output->fd, NULL, NULL, 0, buf, buflen, errcode);
+		if (buf != static_buf) {
+		    free(buf);
+		    buf = static_buf;
+		}
+	    }
+	}
+    }
+out:
+    errno = saved_errno;
+}
+
+#ifdef NO_VARIADIC_MACROS
+void
+sudo_debug_printf_nvm_v1(int pri, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    sudo_debug_vprintf2(NULL, NULL, 0, pri, fmt, ap);
+    va_end(ap);
+}
+#endif /* NO_VARIADIC_MACROS */
+
+void
+sudo_debug_printf2_v1(const char *func, const char *file, int lineno, int level,
+    const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    sudo_debug_vprintf2(func, file, lineno, level, fmt, ap);
+    va_end(ap);
+}
+
+#define EXEC_PREFIX "exec "
+
+void
+sudo_debug_execve2_v1(int level, const char *path, char *const argv[], char *const envp[])
+{
+    int buflen, pri, saved_errno = errno;
+    unsigned int subsys;
+    struct sudo_debug_instance *instance;
+    struct sudo_debug_output *output;
+    char * const *av;
+    char *cp, static_buf[4096], *buf = static_buf;
+    size_t plen;
+    debug_decl_func(sudo_debug_execve2);
+
+    if (sudo_debug_active_instance == -1 || path == NULL)
+	goto out;
+
+    /* Extract priority and subsystem from level. */
+    pri = SUDO_DEBUG_PRI(level);
+    subsys = SUDO_DEBUG_SUBSYS(level);
+
+    /* Find matching instance. */
+    if (sudo_debug_active_instance > sudo_debug_last_instance) {
+	sudo_warnx_nodebug("%s: invalid instance ID %d, max %d",
+	    __func__, sudo_debug_active_instance, sudo_debug_last_instance);
+	goto out;
+    }
+    instance = sudo_debug_instances[sudo_debug_active_instance];
+    if (instance == NULL) {
+	sudo_warnx_nodebug("%s: unregistered instance index %d", __func__,
+	    sudo_debug_active_instance);
+	goto out;
+    }
+    if (subsys > instance->max_subsystem)
+	goto out;
+
+    SLIST_FOREACH(output, &instance->outputs, entries) {
+	bool log_envp = false;
+
+	/* Make sure we want debug info at this level. */
+	if (output->settings[subsys] < pri)
+	    continue;
+
+	/* Log envp for debug level "debug". */
+	if (output->settings[subsys] >= SUDO_DEBUG_DEBUG - 1 && envp != NULL)
+	    log_envp = true;
+
+	/* Alloc and build up buffer. */
+	plen = strlen(path);
+	buflen = sizeof(EXEC_PREFIX) -1 + plen;
+	if (argv != NULL && argv[0] != NULL) {
+	    buflen += sizeof(" []") - 1;
+	    for (av = argv; *av; av++)
+		buflen += strlen(*av) + 1;
+	    buflen--;
+	}
+	if (log_envp && envp[0] != NULL) {
+	    buflen += sizeof(" []") - 1;
+	    for (av = envp; *av; av++)
+		buflen += strlen(*av) + 1;
+	    buflen--;
+	}
+	if (buflen >= ssizeof(static_buf)) {
+	    buf = malloc(buflen + 1);
+	    if (buf == NULL)
+		goto out;
+	}
+
+	/* Copy prefix and command. */
+	memcpy(buf, EXEC_PREFIX, sizeof(EXEC_PREFIX) - 1);
+	cp = buf + sizeof(EXEC_PREFIX) - 1;
+	memcpy(cp, path, plen);
+	cp += plen;
+
+	/* Copy argv. */
+	if (argv != NULL && argv[0] != NULL) {
+	    *cp++ = ' ';
+	    *cp++ = '[';
+	    for (av = argv; *av; av++) {
+		size_t avlen = strlen(*av);
+		memcpy(cp, *av, avlen);
+		cp += avlen;
+		*cp++ = ' ';
+	    }
+	    cp[-1] = ']';
+	}
+
+	if (log_envp && envp[0] != NULL) {
+	    *cp++ = ' ';
+	    *cp++ = '[';
+	    for (av = envp; *av; av++) {
+		size_t avlen = strlen(*av);
+		memcpy(cp, *av, avlen);
+		cp += avlen;
+		*cp++ = ' ';
+	    }
+	    cp[-1] = ']';
+	}
+
+	*cp = '\0';
+
+	sudo_debug_write(output->fd, buf, buflen, 0);
+	if (buf != static_buf) {
+	    free(buf);
+	    buf = static_buf;
+	}
+    }
+out:
+    errno = saved_errno;
+}
+
+/*
+ * Returns the active instance or SUDO_DEBUG_INSTANCE_INITIALIZER
+ * if no instance is active.
+ */
+int
+sudo_debug_get_active_instance_v1(void)
+{
+    return sudo_debug_active_instance;
+}
+
+/*
+ * Sets a new active instance, returning the old one.
+ * Note that the old instance may be SUDO_DEBUG_INSTANCE_INITIALIZER
+ * if this is the only instance.
+ */
+int
+sudo_debug_set_active_instance_v1(int idx)
+{
+    const int old_idx = sudo_debug_active_instance;
+
+    if (idx >= -1 && idx <= sudo_debug_last_instance)
+	sudo_debug_active_instance = idx;
+    return old_idx;
+}
+
+/*
+ * Replace the ofd with nfd in all outputs if present.
+ * Also updates sudo_debug_fds.
+ */
+void
+sudo_debug_update_fd_v1(int ofd, int nfd)
+{
+    int idx;
+
+    if (ofd <= sudo_debug_max_fd && sudo_isset(sudo_debug_fds, ofd)) {
+	/* Update sudo_debug_fds. */
+	sudo_clrbit(sudo_debug_fds, ofd);
+	sudo_setbit(sudo_debug_fds, nfd);
+
+	/* Update the outputs. */
+	for (idx = 0; idx <= sudo_debug_last_instance; idx++) {
+	    struct sudo_debug_instance *instance;
+	    struct sudo_debug_output *output;
+
+	    instance = sudo_debug_instances[idx];
+	    if (instance == NULL)
+		continue;
+	    SLIST_FOREACH(output, &instance->outputs, entries) {
+		if (output->fd == ofd)
+		    output->fd = nfd;
+	    }
+	}
+    }
+}
+
+/*
+ * Returns the highest debug output fd or -1 if no debug files open.
+ * Fills in fds with the value of sudo_debug_fds.
+ */
+int
+sudo_debug_get_fds_v1(unsigned char **fds)
+{
+    *fds = sudo_debug_fds;
+    return sudo_debug_max_fd;
+}
+#else /* FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
+int
+sudo_debug_register_v2(const char *program, const char *const subsystems[],
+    unsigned int ids[], struct sudo_conf_debug_file_list *debug_files,
+    int minfd)
+{
+    return SUDO_DEBUG_INSTANCE_INITIALIZER;
+}
+
+int
+sudo_debug_register_v1(const char *program, const char *const subsystems[],
+    unsigned int ids[], struct sudo_conf_debug_file_list *debug_files)
+{
+    return SUDO_DEBUG_INSTANCE_INITIALIZER;
+}
+
+int
+sudo_debug_deregister_v1(int idx)
+{
+    return -1;
+}
+
+int
+sudo_debug_parse_flags_v1(struct sudo_conf_debug_file_list *debug_files,
+    const char *entry)
+{
+    return 0;
+}
+
+int
+sudo_debug_get_instance_v1(const char *program)
+{
+    return SUDO_DEBUG_INSTANCE_INITIALIZER;
+}
+
+pid_t
+sudo_debug_fork_v1(void)
+{
+    return fork();
+}
+
+void
+sudo_debug_enter_v1(const char *func, const char *file, int line,
+    int subsys)
+{
+}
+
+void
+sudo_debug_exit_v1(const char *func, const char *file, int line,
+    int subsys)
+{
+}
+
+void
+sudo_debug_exit_int_v1(const char *func, const char *file, int line,
+    int subsys, int ret)
+{
+}
+
+void
+sudo_debug_exit_long_v1(const char *func, const char *file, int line,
+    int subsys, long ret)
+{
+}
+
+void
+sudo_debug_exit_id_t_v1(const char *func, const char *file, int line,
+    int subsys, id_t ret)
+{
+}
+
+void
+sudo_debug_exit_size_t_v1(const char *func, const char *file, int line,
+    int subsys, size_t ret)
+{
+}
+
+void
+sudo_debug_exit_ssize_t_v1(const char *func, const char *file, int line,
+    int subsys, ssize_t ret)
+{
+}
+
+void
+sudo_debug_exit_time_t_v1(const char *func, const char *file, int line,
+    int subsys, time_t ret)
+{
+}
+
+void
+sudo_debug_exit_bool_v1(const char *func, const char *file, int line,
+    int subsys, bool ret)
+{
+}
+
+void
+sudo_debug_exit_str_v1(const char *func, const char *file, int line,
+    int subsys, const char *ret)
+{
+}
+
+void
+sudo_debug_exit_str_masked_v1(const char *func, const char *file, int line,
+    int subsys, const char *ret)
+{
+}
+
+void
+sudo_debug_exit_ptr_v1(const char *func, const char *file, int line,
+    int subsys, const void *ret)
+{
+}
+
+void
+sudo_debug_write2_v1(int fd, const char *func, const char *file, int lineno,
+    const char *str, int len, int errnum)
+{
+}
+
+bool
+sudo_debug_needed_v1(int level)
+{
+    return false;
+}
+
+void
+sudo_debug_vprintf2_v1(const char *func, const char *file, int lineno, int level,
+    const char *fmt, va_list ap)
+{
+}
+
+#ifdef NO_VARIADIC_MACROS
+void
+sudo_debug_printf_nvm_v1(int pri, const char *fmt, ...)
+{
+}
+#endif /* NO_VARIADIC_MACROS */
+
+void
+sudo_debug_printf2_v1(const char *func, const char *file, int lineno, int level,
+    const char *fmt, ...)
+{
+}
+
+void
+sudo_debug_execve2_v1(int level, const char *path, char *const argv[], char *const envp[])
+{
+}
+
+int
+sudo_debug_get_active_instance_v1(void)
+{
+    return SUDO_DEBUG_INSTANCE_INITIALIZER;
+}
+
+int
+sudo_debug_set_active_instance_v1(int idx)
+{
+    return SUDO_DEBUG_INSTANCE_INITIALIZER;
+}
+
+void
+sudo_debug_update_fd_v1(int ofd, int nfd)
+{
+}
+
+int
+sudo_debug_get_fds_v1(unsigned char **fds)
+{
+    return -1;
+}
+#endif /* FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION */
diff --git a/lib/util/sudo_dso.c b/lib/util/sudo_dso.c
new file mode 100644
index 0000000..d38fedf
--- /dev/null
+++ b/lib/util/sudo_dso.c
@@ -0,0 +1,432 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010, 2012-2014, 2021-2022 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifdef __linux__
+# include <sys/stat.h>
+# include <sys/utsname.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined(HAVE_SHL_LOAD)
+# include <dl.h>
+#elif defined(HAVE_DLOPEN)
+# include <dlfcn.h>
+#endif
+#include <errno.h>
+
+#include "sudo_compat.h"
+#include "sudo_dso.h"
+#include "sudo_util.h"
+
+/*
+ * Pointer for statically compiled symbols.
+ */
+static struct sudo_preload_table *preload_table;
+
+void
+sudo_dso_preload_table_v1(struct sudo_preload_table *table)
+{
+    preload_table = table;
+}
+
+#if defined(HAVE_SHL_LOAD)
+
+# ifndef DYNAMIC_PATH
+#  define DYNAMIC_PATH	0
+# endif
+
+void *
+sudo_dso_load_v1(const char *path, int mode)
+{
+    struct sudo_preload_table *pt;
+    int flags = DYNAMIC_PATH | BIND_VERBOSE;
+
+    if (mode == 0)
+	mode = SUDO_DSO_LAZY;	/* default behavior */
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->path != NULL && strcmp(path, pt->path) == 0)
+		return pt->handle;
+	}
+    }
+
+    /* We don't support SUDO_DSO_GLOBAL or SUDO_DSO_LOCAL yet. */
+    if (ISSET(mode, SUDO_DSO_LAZY))
+	flags |= BIND_DEFERRED;
+    if (ISSET(mode, SUDO_DSO_NOW))
+	flags |= BIND_IMMEDIATE;
+
+    return (void *)shl_load(path, flags, 0L);
+}
+
+int
+sudo_dso_unload_v1(void *handle)
+{
+    struct sudo_preload_table *pt;
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->handle == handle)
+		return 0;
+	}
+    }
+
+    return shl_unload((shl_t)handle);
+}
+
+void *
+sudo_dso_findsym_v1(void *vhandle, const char *symbol)
+{
+    struct sudo_preload_table *pt;
+    shl_t handle = vhandle;
+    void *value = NULL;
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->handle == handle) {
+		struct sudo_preload_symbol *sym;
+		for (sym = pt->symbols; sym->name != NULL; sym++) {
+		    if (strcmp(sym->name, symbol) == 0)
+			return sym->addr;
+		}
+		errno = ENOENT;
+		return NULL;
+	    }
+	}
+    }
+
+    /*
+     * Note that the behavior of of SUDO_DSO_NEXT and SUDO_DSO_SELF
+     * differs from most implementations when called from
+     * a shared library.
+     */
+    if (vhandle == SUDO_DSO_NEXT) {
+	/* Iterate over all shared libs looking for symbol. */
+	shl_t myhandle = PROG_HANDLE;
+	struct shl_descriptor *desc;
+	int idx = 0;
+
+	/* Find program's real handle. */
+	if (shl_gethandle(PROG_HANDLE, &desc) == 0)
+	    myhandle = desc->handle;
+	while (shl_get(idx++, &desc) == 0) {
+	    if (desc->handle == myhandle)
+		continue;
+	    if (shl_findsym(&desc->handle, symbol, TYPE_UNDEFINED, &value) == 0)
+		break;
+	}
+    } else {
+	if (vhandle == SUDO_DSO_DEFAULT)
+	    handle = NULL;
+	else if (vhandle == SUDO_DSO_SELF)
+	    handle = PROG_HANDLE;
+	(void)shl_findsym(&handle, symbol, TYPE_UNDEFINED, &value);
+    }
+
+    return value;
+}
+
+char *
+sudo_dso_strerror_v1(void)
+{
+    return strerror(errno);
+}
+
+#elif defined(HAVE_DLOPEN)
+
+# ifndef RTLD_GLOBAL
+#  define RTLD_GLOBAL	0
+# endif
+
+/* Default member names for AIX when dlopen()ing an ar (.a) file. */
+# ifdef RTLD_MEMBER
+#  ifdef __LP64__
+#   define SUDO_DSO_MEMBER	"shr_64.o"
+#  else
+#   define SUDO_DSO_MEMBER	"shr.o"
+#  endif
+# endif
+
+# if defined(__linux__)
+/*
+ * On Linux systems that use multi-arch, the actual DSO may be
+ * in a machine-specific subdirectory.  If the specified path
+ * contains /lib/ or /libexec/, insert a multi-arch directory
+ * after it.
+ */
+static void *
+dlopen_multi_arch(const char *path, int flags)
+{
+    void *ret = NULL;
+    struct stat sb;
+    char *newpath;
+
+    /* Only try multi-arch if the original path does not exist.  */
+    if (stat(path, &sb) == -1 && errno == ENOENT) {
+	newpath = sudo_stat_multiarch(path, &sb);
+	if (newpath != NULL) {
+	    ret = dlopen(newpath, flags);
+	    free(newpath);
+	}
+    }
+    return ret;
+}
+# else
+static void *
+dlopen_multi_arch(const char *path, int flags)
+{
+    return NULL;
+}
+# endif /* __linux__ */
+
+void *
+sudo_dso_load_v1(const char *path, int mode)
+{
+    struct sudo_preload_table *pt;
+    int flags = 0;
+    void *ret;
+# ifdef RTLD_MEMBER
+    char *cp;
+    size_t pathlen;
+# endif
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->path != NULL && strcmp(path, pt->path) == 0)
+		return pt->handle;
+	}
+    }
+
+    /* Map SUDO_DSO_* -> RTLD_* */
+    if (ISSET(mode, SUDO_DSO_LAZY))
+	SET(flags, RTLD_LAZY);
+    if (ISSET(mode, SUDO_DSO_NOW))
+	SET(flags, RTLD_NOW);
+    if (ISSET(mode, SUDO_DSO_GLOBAL))
+	SET(flags, RTLD_GLOBAL);
+    if (ISSET(mode, SUDO_DSO_LOCAL))
+	SET(flags, RTLD_LOCAL);
+
+# ifdef RTLD_MEMBER
+    /* Check for AIX shlib.a(member) syntax and dlopen() with RTLD_MEMBER. */
+    pathlen = strlen(path);
+    if (pathlen > 2 && path[pathlen - 1] == ')') {
+	cp = strrchr(path, '(');
+	if (cp != NULL && cp > path + 2 && cp[-2] == '.' && cp[-1] == 'a') {
+	    /* Only for archive files (e.g. sudoers.a). */
+	    SET(flags, RTLD_MEMBER);
+	}
+    }
+# endif /* RTLD_MEMBER */
+    ret = dlopen(path, flags);
+# if defined(RTLD_MEMBER)
+    /* Special fallback handling for AIX shared objects. */
+    if (ret == NULL && !ISSET(flags, RTLD_MEMBER)) {
+	switch (errno) {
+	case ENOEXEC:
+	    /*
+	     * If we try to dlopen() an AIX .a file without an explicit member
+	     * it will fail with ENOEXEC.  Try again using the default member.
+	     */
+	    if (pathlen > 2 && strcmp(&path[pathlen - 2], ".a") == 0) {
+		int len = asprintf(&cp, "%s(%s)", path, SUDO_DSO_MEMBER);
+		if (len != -1) {
+		    ret = dlopen(cp, flags|RTLD_MEMBER);
+		    free(cp);
+		}
+		if (ret == NULL) {
+		    /* Retry with the original path to get the correct error. */
+		    ret = dlopen(path, flags);
+		}
+	    }
+	    break;
+	case ENOENT:
+	    /*
+	     * If the .so file is missing but the .a file exists, try to
+	     * dlopen() the AIX .a file using the .so name as the member.
+	     * This is for compatibility with versions of sudo that use
+	     * SVR4-style shared libs, not AIX-style shared libs.
+	     */
+	    if (pathlen > 3 && strcmp(&path[pathlen - 3], ".so") == 0) {
+		int len = asprintf(&cp, "%.*s.a(%s)", (int)(pathlen - 3),
+		    path, sudo_basename(path));
+		if (len != -1) {
+		    ret = dlopen(cp, flags|RTLD_MEMBER);
+		    free(cp);
+		}
+		if (ret == NULL) {
+		    /* Retry with the original path to get the correct error. */
+		    ret = dlopen(path, flags);
+		}
+	    }
+	    break;
+	}
+    }
+# endif /* RTLD_MEMBER */
+    /* On failure, try again with a multi-arch path where possible. */
+    if (ret == NULL)
+	ret = dlopen_multi_arch(path, flags);
+
+    return ret;
+}
+
+int
+sudo_dso_unload_v1(void *handle)
+{
+    struct sudo_preload_table *pt;
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->handle == handle)
+		return 0;
+	}
+    }
+
+    return dlclose(handle);
+}
+
+void *
+sudo_dso_findsym_v1(void *handle, const char *symbol)
+{
+    struct sudo_preload_table *pt;
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->handle == handle) {
+		struct sudo_preload_symbol *sym;
+		for (sym = pt->symbols; sym->name != NULL; sym++) {
+		    if (strcmp(sym->name, symbol) == 0)
+			return sym->addr;
+		}
+		errno = ENOENT;
+		return NULL;
+	    }
+	}
+    }
+
+    /*
+     * Not all implementations support the special handles.
+     */
+    if (handle == SUDO_DSO_NEXT) {
+# ifdef RTLD_NEXT
+	handle = RTLD_NEXT;
+# else
+	errno = ENOENT;
+	return NULL;
+# endif
+    } else if (handle == SUDO_DSO_DEFAULT) {
+# ifdef RTLD_DEFAULT
+	handle = RTLD_DEFAULT;
+# else
+	errno = ENOENT;
+	return NULL;
+# endif
+    } else if (handle == SUDO_DSO_SELF) {
+# ifdef RTLD_SELF
+	handle = RTLD_SELF;
+# else
+	errno = ENOENT;
+	return NULL;
+# endif
+    }
+
+    return dlsym(handle, symbol);
+}
+
+char *
+sudo_dso_strerror_v1(void)
+{
+    return dlerror();
+}
+
+#else /* !HAVE_SHL_LOAD && !HAVE_DLOPEN */
+
+/*
+ * Emulate dlopen() using a static list of symbols compiled into sudo.
+ */
+void *
+sudo_dso_load_v1(const char *path, int mode)
+{
+    struct sudo_preload_table *pt;
+
+    /* Check prelinked symbols first. */
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->path != NULL && strcmp(path, pt->path) == 0)
+		return pt->handle;
+	}
+    }
+    return NULL;
+}
+
+int
+sudo_dso_unload_v1(void *handle)
+{
+    struct sudo_preload_table *pt;
+
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->handle == handle)
+		return 0;
+	}
+    }
+    return -1;
+}
+
+void *
+sudo_dso_findsym_v1(void *handle, const char *symbol)
+{
+    struct sudo_preload_table *pt;
+
+    if (preload_table != NULL) {
+	for (pt = preload_table; pt->handle != NULL; pt++) {
+	    if (pt->handle == handle) {
+		struct sudo_preload_symbol *sym;
+		for (sym = pt->symbols; sym->name != NULL; sym++) {
+		    if (strcmp(sym->name, symbol) == 0)
+			return sym->addr;
+		}
+	    }
+	}
+    }
+    errno = ENOENT;
+    return NULL;
+}
+
+char *
+sudo_dso_strerror_v1(void)
+{
+    return strerror(errno);
+}
+#endif /* !HAVE_SHL_LOAD && !HAVE_DLOPEN */
diff --git a/lib/util/sys_siglist.h b/lib/util/sys_siglist.h
new file mode 100644
index 0000000..f2ed2b2
--- /dev/null
+++ b/lib/util/sys_siglist.h
@@ -0,0 +1,182 @@
+/* public domain */
+
+#include <config.h>
+#include <sys/types.h>
+#include <signal.h>
+#include "sudo_compat.h"
+
+int sudo_end_of_headers;
+static char *sudo_sys_siglist[NSIG];
+
+#ifdef SIGHUP
+    if (sudo_sys_siglist[SIGHUP] == NULL)
+	sudo_sys_siglist[SIGHUP] = "Hangup";
+#endif
+#ifdef SIGINT
+    if (sudo_sys_siglist[SIGINT] == NULL)
+	sudo_sys_siglist[SIGINT] = "Interrupt";
+#endif
+#ifdef SIGQUIT
+    if (sudo_sys_siglist[SIGQUIT] == NULL)
+	sudo_sys_siglist[SIGQUIT] = "Quit";
+#endif
+#ifdef SIGILL
+    if (sudo_sys_siglist[SIGILL] == NULL)
+	sudo_sys_siglist[SIGILL] = "Illegal instruction";
+#endif
+#ifdef SIGTRAP
+    if (sudo_sys_siglist[SIGTRAP] == NULL)
+	sudo_sys_siglist[SIGTRAP] = "Trace trap";
+#endif
+#ifdef SIGABRT
+    if (sudo_sys_siglist[SIGABRT] == NULL)
+	sudo_sys_siglist[SIGABRT] = "Abort";
+#endif
+#ifdef SIGIOT
+    if (sudo_sys_siglist[SIGIOT] == NULL)
+	sudo_sys_siglist[SIGIOT] = "IOT instruction";
+#endif
+#ifdef SIGEMT
+    if (sudo_sys_siglist[SIGEMT] == NULL)
+	sudo_sys_siglist[SIGEMT] = "EMT trap";
+#endif
+#ifdef SIGFPE
+    if (sudo_sys_siglist[SIGFPE] == NULL)
+	sudo_sys_siglist[SIGFPE] = "Floating point exception";
+#endif
+#ifdef SIGKILL
+    if (sudo_sys_siglist[SIGKILL] == NULL)
+	sudo_sys_siglist[SIGKILL] = "Killed";
+#endif
+#ifdef SIGBUS
+    if (sudo_sys_siglist[SIGBUS] == NULL)
+	sudo_sys_siglist[SIGBUS] = "Bus error";
+#endif
+#ifdef SIGSEGV
+    if (sudo_sys_siglist[SIGSEGV] == NULL)
+	sudo_sys_siglist[SIGSEGV] = "Memory fault";
+#endif
+#ifdef SIGSYS
+    if (sudo_sys_siglist[SIGSYS] == NULL)
+	sudo_sys_siglist[SIGSYS] = "Bad system call";
+#endif
+#ifdef SIGUNUSED
+    if (sudo_sys_siglist[SIGUNUSED] == NULL)
+	sudo_sys_siglist[SIGUNUSED] = "Unused";
+#endif
+#ifdef SIGPIPE
+    if (sudo_sys_siglist[SIGPIPE] == NULL)
+	sudo_sys_siglist[SIGPIPE] = "Broken pipe";
+#endif
+#ifdef SIGALRM
+    if (sudo_sys_siglist[SIGALRM] == NULL)
+	sudo_sys_siglist[SIGALRM] = "Alarm clock";
+#endif
+#ifdef SIGTERM
+    if (sudo_sys_siglist[SIGTERM] == NULL)
+	sudo_sys_siglist[SIGTERM] = "Terminated";
+#endif
+#ifdef SIGSTKFLT
+    if (sudo_sys_siglist[SIGSTKFLT] == NULL)
+	sudo_sys_siglist[SIGSTKFLT] = "Stack fault";
+#endif
+#ifdef SIGIO
+    if (sudo_sys_siglist[SIGIO] == NULL)
+	sudo_sys_siglist[SIGIO] = "I/O possible";
+#endif
+#ifdef SIGXCPU
+    if (sudo_sys_siglist[SIGXCPU] == NULL)
+	sudo_sys_siglist[SIGXCPU] = "CPU time limit exceeded";
+#endif
+#ifdef SIGXFSZ
+    if (sudo_sys_siglist[SIGXFSZ] == NULL)
+	sudo_sys_siglist[SIGXFSZ] = "File size limit exceeded";
+#endif
+#ifdef SIGVTALRM
+    if (sudo_sys_siglist[SIGVTALRM] == NULL)
+	sudo_sys_siglist[SIGVTALRM] = "Virtual timer expired";
+#endif
+#ifdef SIGPROF
+    if (sudo_sys_siglist[SIGPROF] == NULL)
+	sudo_sys_siglist[SIGPROF] = "Profiling timer expired";
+#endif
+#ifdef SIGWINCH
+    if (sudo_sys_siglist[SIGWINCH] == NULL)
+	sudo_sys_siglist[SIGWINCH] = "Window size change";
+#endif
+#ifdef SIGLOST
+    if (sudo_sys_siglist[SIGLOST] == NULL)
+	sudo_sys_siglist[SIGLOST] = "File lock lost";
+#endif
+#ifdef SIGUSR1
+    if (sudo_sys_siglist[SIGUSR1] == NULL)
+	sudo_sys_siglist[SIGUSR1] = "User defined signal 1";
+#endif
+#ifdef SIGUSR2
+    if (sudo_sys_siglist[SIGUSR2] == NULL)
+	sudo_sys_siglist[SIGUSR2] = "User defined signal 2";
+#endif
+#ifdef SIGPWR
+    if (sudo_sys_siglist[SIGPWR] == NULL)
+	sudo_sys_siglist[SIGPWR] = "Power-fail/Restart";
+#endif
+#ifdef SIGPOLL
+    if (sudo_sys_siglist[SIGPOLL] == NULL)
+	sudo_sys_siglist[SIGPOLL] = "Pollable event occurred";
+#endif
+#ifdef SIGSTOP
+    if (sudo_sys_siglist[SIGSTOP] == NULL)
+	sudo_sys_siglist[SIGSTOP] = "Stopped (signal)";
+#endif
+#ifdef SIGTSTP
+    if (sudo_sys_siglist[SIGTSTP] == NULL)
+	sudo_sys_siglist[SIGTSTP] = "Stopped";
+#endif
+#ifdef SIGCONT
+    if (sudo_sys_siglist[SIGCONT] == NULL)
+	sudo_sys_siglist[SIGCONT] = "Continued";
+#endif
+#ifdef SIGCHLD
+    if (sudo_sys_siglist[SIGCHLD] == NULL)
+	sudo_sys_siglist[SIGCHLD] = "Child exited";
+#endif
+#ifdef SIGCLD
+    if (sudo_sys_siglist[SIGCLD] == NULL)
+	sudo_sys_siglist[SIGCLD] = "Child exited";
+#endif
+#ifdef SIGTTIN
+    if (sudo_sys_siglist[SIGTTIN] == NULL)
+	sudo_sys_siglist[SIGTTIN] = "Stopped (tty input)";
+#endif
+#ifdef SIGTTOU
+    if (sudo_sys_siglist[SIGTTOU] == NULL)
+	sudo_sys_siglist[SIGTTOU] = "Stopped (tty output)";
+#endif
+#ifdef SIGINFO
+    if (sudo_sys_siglist[SIGINFO] == NULL)
+	sudo_sys_siglist[SIGINFO] = "Information request";
+#endif
+#ifdef SIGURG
+    if (sudo_sys_siglist[SIGURG] == NULL)
+	sudo_sys_siglist[SIGURG] = "Urgent I/O condition";
+#endif
+#ifdef SIGWAITING
+    if (sudo_sys_siglist[SIGWAITING] == NULL)
+	sudo_sys_siglist[SIGWAITING] = "No runnable LWPs";
+#endif
+#ifdef SIGLWP
+    if (sudo_sys_siglist[SIGLWP] == NULL)
+	sudo_sys_siglist[SIGLWP] = "Inter-LWP signal";
+#endif
+#ifdef SIGFREEZE
+    if (sudo_sys_siglist[SIGFREEZE] == NULL)
+	sudo_sys_siglist[SIGFREEZE] = "Checkpoint freeze";
+#endif
+#ifdef SIGTHAW
+    if (sudo_sys_siglist[SIGTHAW] == NULL)
+	sudo_sys_siglist[SIGTHAW] = "Checkpoint thaw";
+#endif
+#ifdef SIGCANCEL
+    if (sudo_sys_siglist[SIGCANCEL] == NULL)
+	sudo_sys_siglist[SIGCANCEL] = "Thread cancellation";
+#endif
diff --git a/lib/util/sys_signame.h b/lib/util/sys_signame.h
new file mode 100644
index 0000000..3616df3
--- /dev/null
+++ b/lib/util/sys_signame.h
@@ -0,0 +1,182 @@
+/* public domain */
+
+#include <config.h>
+#include <sys/types.h>
+#include <signal.h>
+#include "sudo_compat.h"
+
+int sudo_end_of_headers;
+static char *sudo_sys_signame[NSIG];
+
+#ifdef SIGHUP
+    if (sudo_sys_signame[SIGHUP] == NULL)
+	sudo_sys_signame[SIGHUP] = "HUP";
+#endif
+#ifdef SIGINT
+    if (sudo_sys_signame[SIGINT] == NULL)
+	sudo_sys_signame[SIGINT] = "INT";
+#endif
+#ifdef SIGQUIT
+    if (sudo_sys_signame[SIGQUIT] == NULL)
+	sudo_sys_signame[SIGQUIT] = "QUIT";
+#endif
+#ifdef SIGILL
+    if (sudo_sys_signame[SIGILL] == NULL)
+	sudo_sys_signame[SIGILL] = "ILL";
+#endif
+#ifdef SIGTRAP
+    if (sudo_sys_signame[SIGTRAP] == NULL)
+	sudo_sys_signame[SIGTRAP] = "TRAP";
+#endif
+#ifdef SIGABRT
+    if (sudo_sys_signame[SIGABRT] == NULL)
+	sudo_sys_signame[SIGABRT] = "ABRT";
+#endif
+#ifdef SIGIOT
+    if (sudo_sys_signame[SIGIOT] == NULL)
+	sudo_sys_signame[SIGIOT] = "IOT";
+#endif
+#ifdef SIGEMT
+    if (sudo_sys_signame[SIGEMT] == NULL)
+	sudo_sys_signame[SIGEMT] = "EMT";
+#endif
+#ifdef SIGFPE
+    if (sudo_sys_signame[SIGFPE] == NULL)
+	sudo_sys_signame[SIGFPE] = "FPE";
+#endif
+#ifdef SIGKILL
+    if (sudo_sys_signame[SIGKILL] == NULL)
+	sudo_sys_signame[SIGKILL] = "KILL";
+#endif
+#ifdef SIGBUS
+    if (sudo_sys_signame[SIGBUS] == NULL)
+	sudo_sys_signame[SIGBUS] = "BUS";
+#endif
+#ifdef SIGSEGV
+    if (sudo_sys_signame[SIGSEGV] == NULL)
+	sudo_sys_signame[SIGSEGV] = "SEGV";
+#endif
+#ifdef SIGSYS
+    if (sudo_sys_signame[SIGSYS] == NULL)
+	sudo_sys_signame[SIGSYS] = "SYS";
+#endif
+#ifdef SIGUNUSED
+    if (sudo_sys_signame[SIGUNUSED] == NULL)
+	sudo_sys_signame[SIGUNUSED] = "UNUSED";
+#endif
+#ifdef SIGPIPE
+    if (sudo_sys_signame[SIGPIPE] == NULL)
+	sudo_sys_signame[SIGPIPE] = "PIPE";
+#endif
+#ifdef SIGALRM
+    if (sudo_sys_signame[SIGALRM] == NULL)
+	sudo_sys_signame[SIGALRM] = "ALRM";
+#endif
+#ifdef SIGTERM
+    if (sudo_sys_signame[SIGTERM] == NULL)
+	sudo_sys_signame[SIGTERM] = "TERM";
+#endif
+#ifdef SIGSTKFLT
+    if (sudo_sys_signame[SIGSTKFLT] == NULL)
+	sudo_sys_signame[SIGSTKFLT] = "STKFLT";
+#endif
+#ifdef SIGIO
+    if (sudo_sys_signame[SIGIO] == NULL)
+	sudo_sys_signame[SIGIO] = "IO";
+#endif
+#ifdef SIGXCPU
+    if (sudo_sys_signame[SIGXCPU] == NULL)
+	sudo_sys_signame[SIGXCPU] = "XCPU";
+#endif
+#ifdef SIGXFSZ
+    if (sudo_sys_signame[SIGXFSZ] == NULL)
+	sudo_sys_signame[SIGXFSZ] = "XFSZ";
+#endif
+#ifdef SIGVTALRM
+    if (sudo_sys_signame[SIGVTALRM] == NULL)
+	sudo_sys_signame[SIGVTALRM] = "VTALRM";
+#endif
+#ifdef SIGPROF
+    if (sudo_sys_signame[SIGPROF] == NULL)
+	sudo_sys_signame[SIGPROF] = "PROF";
+#endif
+#ifdef SIGWINCH
+    if (sudo_sys_signame[SIGWINCH] == NULL)
+	sudo_sys_signame[SIGWINCH] = "WINCH";
+#endif
+#ifdef SIGLOST
+    if (sudo_sys_signame[SIGLOST] == NULL)
+	sudo_sys_signame[SIGLOST] = "LOST";
+#endif
+#ifdef SIGUSR1
+    if (sudo_sys_signame[SIGUSR1] == NULL)
+	sudo_sys_signame[SIGUSR1] = "USR1";
+#endif
+#ifdef SIGUSR2
+    if (sudo_sys_signame[SIGUSR2] == NULL)
+	sudo_sys_signame[SIGUSR2] = "USR2";
+#endif
+#ifdef SIGPWR
+    if (sudo_sys_signame[SIGPWR] == NULL)
+	sudo_sys_signame[SIGPWR] = "PWR";
+#endif
+#ifdef SIGPOLL
+    if (sudo_sys_signame[SIGPOLL] == NULL)
+	sudo_sys_signame[SIGPOLL] = "POLL";
+#endif
+#ifdef SIGSTOP
+    if (sudo_sys_signame[SIGSTOP] == NULL)
+	sudo_sys_signame[SIGSTOP] = "STOP";
+#endif
+#ifdef SIGTSTP
+    if (sudo_sys_signame[SIGTSTP] == NULL)
+	sudo_sys_signame[SIGTSTP] = "TSTP";
+#endif
+#ifdef SIGCONT
+    if (sudo_sys_signame[SIGCONT] == NULL)
+	sudo_sys_signame[SIGCONT] = "CONT";
+#endif
+#ifdef SIGCHLD
+    if (sudo_sys_signame[SIGCHLD] == NULL)
+	sudo_sys_signame[SIGCHLD] = "CHLD";
+#endif
+#ifdef SIGCLD
+    if (sudo_sys_signame[SIGCLD] == NULL)
+	sudo_sys_signame[SIGCLD] = "CLD";
+#endif
+#ifdef SIGTTIN
+    if (sudo_sys_signame[SIGTTIN] == NULL)
+	sudo_sys_signame[SIGTTIN] = "TTIN";
+#endif
+#ifdef SIGTTOU
+    if (sudo_sys_signame[SIGTTOU] == NULL)
+	sudo_sys_signame[SIGTTOU] = "TTOU";
+#endif
+#ifdef SIGINFO
+    if (sudo_sys_signame[SIGINFO] == NULL)
+	sudo_sys_signame[SIGINFO] = "INFO";
+#endif
+#ifdef SIGURG
+    if (sudo_sys_signame[SIGURG] == NULL)
+	sudo_sys_signame[SIGURG] = "URG";
+#endif
+#ifdef SIGWAITING
+    if (sudo_sys_signame[SIGWAITING] == NULL)
+	sudo_sys_signame[SIGWAITING] = "WAITING";
+#endif
+#ifdef SIGLWP
+    if (sudo_sys_signame[SIGLWP] == NULL)
+	sudo_sys_signame[SIGLWP] = "LWP";
+#endif
+#ifdef SIGFREEZE
+    if (sudo_sys_signame[SIGFREEZE] == NULL)
+	sudo_sys_signame[SIGFREEZE] = "FREEZE";
+#endif
+#ifdef SIGTHAW
+    if (sudo_sys_signame[SIGTHAW] == NULL)
+	sudo_sys_signame[SIGTHAW] = "THAW";
+#endif
+#ifdef SIGCANCEL
+    if (sudo_sys_signame[SIGCANCEL] == NULL)
+	sudo_sys_signame[SIGCANCEL] = "CANCEL";
+#endif
diff --git a/lib/util/term.c b/lib/util/term.c
new file mode 100644
index 0000000..41d2725
--- /dev/null
+++ b/lib/util/term.c
@@ -0,0 +1,315 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2015, 2017-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/* TCSASOFT is a BSD extension that ignores control flags and speed. */
+#ifndef TCSASOFT
+# define TCSASOFT	0
+#endif
+
+/* Non-standard termios input flags */
+#ifndef IUCLC
+# define IUCLC		0
+#endif
+#ifndef IMAXBEL
+# define IMAXBEL	0
+#endif
+#ifndef IUTF8
+# define IUTF8	0
+#endif
+
+/* Non-standard termios output flags */
+#ifndef OLCUC
+# define OLCUC	0
+#endif
+#ifndef ONLCR
+# define ONLCR	0
+#endif
+#ifndef OCRNL
+# define OCRNL	0
+#endif
+#ifndef ONOCR
+# define ONOCR	0
+#endif
+#ifndef ONLRET
+# define ONLRET	0
+#endif
+
+/* Non-standard termios local flags */
+#ifndef XCASE
+# define XCASE		0
+#endif
+#ifndef IEXTEN
+# define IEXTEN		0
+#endif
+#ifndef ECHOCTL
+# define ECHOCTL	0
+#endif
+#ifndef ECHOKE
+# define ECHOKE		0
+#endif
+#ifndef PENDIN
+# define PENDIN		0
+#endif
+
+static struct termios oterm;
+static int changed;
+
+/* tgetpass() needs to know the erase and kill chars for cbreak mode. */
+sudo_dso_public int sudo_term_eof;
+sudo_dso_public int sudo_term_erase;
+sudo_dso_public int sudo_term_kill;
+
+static volatile sig_atomic_t got_sigttou;
+
+/*
+ * SIGTTOU signal handler for term_restore that just sets a flag.
+ */
+static void
+sigttou(int signo)
+{
+    got_sigttou = 1;
+}
+
+/*
+ * Like tcsetattr() but restarts on EINTR _except_ for SIGTTOU.
+ * Returns 0 on success or -1 on failure, setting errno.
+ * Sets got_sigttou on failure if interrupted by SIGTTOU.
+ */
+static int
+tcsetattr_nobg(int fd, int flags, struct termios *tp)
+{
+    struct sigaction sa, osa;
+    int rc;
+    debug_decl(tcsetattr_nobg, SUDO_DEBUG_UTIL);
+
+    /*
+     * If we receive SIGTTOU from tcsetattr() it means we are
+     * not in the foreground process group.
+     * This should be less racy than using tcgetpgrp().
+     */
+    memset(&sa, 0, sizeof(sa));
+    sigemptyset(&sa.sa_mask);
+    sa.sa_handler = sigttou;
+    got_sigttou = 0;
+    sigaction(SIGTTOU, &sa, &osa);
+    do {
+	rc = tcsetattr(fd, flags, tp);
+    } while (rc != 0 && errno == EINTR && !got_sigttou);
+    sigaction(SIGTTOU, &osa, NULL);
+
+    debug_return_int(rc);
+}
+
+/*
+ * Restore saved terminal settings if we are in the foreground process group.
+ * Returns true on success or false on failure.
+ */
+bool
+sudo_term_restore_v1(int fd, bool flush)
+{
+    debug_decl(sudo_term_restore, SUDO_DEBUG_UTIL);
+
+    if (changed) {
+	const int flags = flush ? (TCSASOFT|TCSAFLUSH) : (TCSASOFT|TCSADRAIN);
+	if (tcsetattr_nobg(fd, flags, &oterm) != 0)
+	    debug_return_bool(false);
+	changed = 0;
+    }
+    debug_return_bool(true);
+}
+
+/*
+ * Disable terminal echo.
+ * Returns true on success or false on failure.
+ */
+bool
+sudo_term_noecho_v1(int fd)
+{
+    struct termios term;
+    debug_decl(sudo_term_noecho, SUDO_DEBUG_UTIL);
+
+    if (!changed && tcgetattr(fd, &oterm) != 0)
+	debug_return_bool(false);
+    (void) memcpy(&term, &oterm, sizeof(term));
+    CLR(term.c_lflag, ECHO|ECHONL);
+#ifdef VSTATUS
+    term.c_cc[VSTATUS] = _POSIX_VDISABLE;
+#endif
+    if (tcsetattr_nobg(fd, TCSASOFT|TCSADRAIN, &term) == 0) {
+	changed = 1;
+	debug_return_bool(true);
+    }
+    debug_return_bool(false);
+}
+
+/*
+ * Set terminal to raw mode with optional terminal signals.
+ * Returns true on success or false on failure.
+ */
+bool
+sudo_term_raw_v1(int fd, int isig)
+{
+    struct termios term;
+    debug_decl(sudo_term_raw, SUDO_DEBUG_UTIL);
+
+    if (!changed && tcgetattr(fd, &oterm) != 0)
+	debug_return_bool(false);
+    (void) memcpy(&term, &oterm, sizeof(term));
+    /* Set terminal to raw mode but optionally enable terminal signals. */
+    cfmakeraw(&term);
+    if (isig)
+	SET(term.c_lflag, ISIG);
+    if (tcsetattr_nobg(fd, TCSASOFT|TCSADRAIN, &term) == 0) {
+	changed = 1;
+    	debug_return_bool(true);
+    }
+    debug_return_bool(false);
+}
+
+/*
+ * Set terminal to cbreak mode.
+ * Returns true on success or false on failure.
+ */
+bool
+sudo_term_cbreak_v1(int fd)
+{
+    struct termios term;
+    debug_decl(sudo_term_cbreak, SUDO_DEBUG_UTIL);
+
+    if (!changed && tcgetattr(fd, &oterm) != 0)
+	debug_return_bool(false);
+    (void) memcpy(&term, &oterm, sizeof(term));
+    /* Set terminal to half-cooked mode */
+    term.c_cc[VMIN] = 1;
+    term.c_cc[VTIME] = 0;
+    /* cppcheck-suppress redundantAssignment */
+    CLR(term.c_lflag, ECHO | ECHONL | ICANON | IEXTEN);
+    /* cppcheck-suppress redundantAssignment */
+    SET(term.c_lflag, ISIG);
+#ifdef VSTATUS
+    term.c_cc[VSTATUS] = _POSIX_VDISABLE;
+#endif
+    if (tcsetattr_nobg(fd, TCSASOFT|TCSADRAIN, &term) == 0) {
+	sudo_term_eof = term.c_cc[VEOF];
+	sudo_term_erase = term.c_cc[VERASE];
+	sudo_term_kill = term.c_cc[VKILL];
+	changed = 1;
+	debug_return_bool(true);
+    }
+    debug_return_bool(false);
+}
+
+/* Termios flags to copy between terminals. */
+#define INPUT_FLAGS (IGNPAR|PARMRK|INPCK|ISTRIP|INLCR|IGNCR|ICRNL|IUCLC|IXON|IXANY|IXOFF|IMAXBEL|IUTF8)
+#define OUTPUT_FLAGS (OPOST|OLCUC|ONLCR|OCRNL|ONOCR|ONLRET)
+#define CONTROL_FLAGS (CS7|CS8|PARENB|PARODD)
+#define LOCAL_FLAGS (ISIG|ICANON|XCASE|ECHO|ECHOE|ECHOK|ECHONL|NOFLSH|TOSTOP|IEXTEN|ECHOCTL|ECHOKE|PENDIN)
+
+/*
+ * Copy terminal settings from one descriptor to another.
+ * We cannot simply copy the struct termios as src and dst may be
+ * different terminal types (pseudo-tty vs. console or glass tty).
+ * Returns true on success or false on failure.
+ */
+bool
+sudo_term_copy_v1(int src, int dst)
+{
+    struct termios tt_src, tt_dst;
+    struct winsize wsize;
+    speed_t speed;
+    int i;
+    debug_decl(sudo_term_copy, SUDO_DEBUG_UTIL);
+
+    if (tcgetattr(src, &tt_src) != 0 || tcgetattr(dst, &tt_dst) != 0)
+	debug_return_bool(false);
+
+    /* Clear select input, output, control and local flags. */
+    CLR(tt_dst.c_iflag, INPUT_FLAGS);
+    CLR(tt_dst.c_oflag, OUTPUT_FLAGS);
+    CLR(tt_dst.c_cflag, CONTROL_FLAGS);
+    CLR(tt_dst.c_lflag, LOCAL_FLAGS);
+
+    /* Copy select input, output, control and local flags. */
+    SET(tt_dst.c_iflag, (tt_src.c_iflag & INPUT_FLAGS));
+    SET(tt_dst.c_oflag, (tt_src.c_oflag & OUTPUT_FLAGS));
+    SET(tt_dst.c_cflag, (tt_src.c_cflag & CONTROL_FLAGS));
+    SET(tt_dst.c_lflag, (tt_src.c_lflag & LOCAL_FLAGS));
+
+    /* Copy special chars from src verbatim. */
+    for (i = 0; i < NCCS; i++)
+	tt_dst.c_cc[i] = tt_src.c_cc[i];
+
+    /* Copy speed from src (zero output speed closes the connection). */
+    if ((speed = cfgetospeed(&tt_src)) == B0)
+	speed = B38400;
+    cfsetospeed(&tt_dst, speed);
+    speed = cfgetispeed(&tt_src);
+    cfsetispeed(&tt_dst, speed);
+
+    if (tcsetattr_nobg(dst, TCSASOFT|TCSAFLUSH, &tt_dst) == -1)
+	debug_return_bool(false);
+
+    if (ioctl(src, TIOCGWINSZ, &wsize) == 0)
+	(void)ioctl(dst, TIOCSWINSZ, &wsize);
+
+    debug_return_bool(true);
+}
+
+/*
+ * Returns true if fd refers to a tty in raw mode, else false.
+ */
+bool
+sudo_term_is_raw_v1(int fd)
+{
+    struct termios term;
+    debug_decl(sudo_term_is_raw, SUDO_DEBUG_UTIL);
+
+    if (tcgetattr(fd, &term) != 0)
+	debug_return_bool(false);
+
+    if (term.c_cc[VMIN] != 1 || term.c_cc[VTIME] != 0)
+	debug_return_bool(false);
+
+    if (ISSET(term.c_oflag, OPOST))
+	debug_return_bool(false);
+
+    if (ISSET(term.c_oflag, ECHO|ECHONL|ICANON))
+	debug_return_bool(false);
+
+    debug_return_bool(true);
+}
diff --git a/lib/util/timegm.c b/lib/util/timegm.c
new file mode 100644
index 0000000..968d829
--- /dev/null
+++ b/lib/util/timegm.c
@@ -0,0 +1,99 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2017, 2021 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#ifndef HAVE_TIMEGM
+
+#include <stdio.h>
+#include <time.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+
+/*
+ * Returns the offset from GMT in seconds (algorithm taken from sendmail).
+ */
+#ifdef HAVE_STRUCT_TM_TM_GMTOFF
+static long
+get_gmtoff(time_t *when)
+{
+    struct tm local;
+
+    if (localtime_r(when, &local) == NULL)
+	return 0;
+
+    /* Adjust for DST. */
+    if (local.tm_isdst != 0)
+	local.tm_gmtoff -= local.tm_isdst * 3600;
+
+    return local.tm_gmtoff;
+}
+#else
+static long
+get_gmtoff(time_t *when)
+{
+    struct tm gmt, local;
+    long offset;
+
+    if (gmtime_r(when, &gmt) == NULL)
+	return 0;
+    if (localtime_r(when, &local) == NULL)
+	return 0;
+
+    offset = (local.tm_sec - gmt.tm_sec) +
+	((local.tm_min - gmt.tm_min) * 60) +
+	((local.tm_hour - gmt.tm_hour) * 3600);
+
+    /* Timezone may cause year rollover to happen on a different day. */
+    if (local.tm_year < gmt.tm_year)
+	offset -= 24 * 3600;
+    else if (local.tm_year > gmt.tm_year)
+	offset -= 24 * 3600;
+    else if (local.tm_yday < gmt.tm_yday)
+	offset -= 24 * 3600;
+    else if (local.tm_yday > gmt.tm_yday)
+	offset += 24 * 3600;
+
+    /* Adjust for DST. */
+    if (local.tm_isdst != 0)
+	offset -= local.tm_isdst * 3600;
+
+    return offset;
+}
+#endif /* HAVE_TM_GMTOFF */
+
+time_t
+sudo_timegm(struct tm *tm)
+{
+    time_t result;
+
+    tm->tm_isdst = 0;
+    result = mktime(tm);
+    if (result != -1)
+	result += get_gmtoff(&result);
+
+    return result;
+}
+
+#endif /* HAVE_TIMEGM */
diff --git a/lib/util/ttyname_dev.c b/lib/util/ttyname_dev.c
new file mode 100644
index 0000000..08b9777
--- /dev/null
+++ b/lib/util/ttyname_dev.c
@@ -0,0 +1,311 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2012-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#if defined(MAJOR_IN_MKDEV)
+# include <sys/mkdev.h>
+#elif defined(MAJOR_IN_SYSMACROS)
+# include <sys/sysmacros.h>
+#else
+# include <sys/param.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <dirent.h>
+
+#include "pathnames.h"
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_conf.h"
+#include "sudo_util.h"
+
+#if defined(HAVE_DEVNAME)
+/*
+ * Like ttyname() but uses a dev_t instead of an open fd.
+ * Returns name on success and NULL on failure, setting errno.
+ * The BSD version uses devname().
+ */
+char *
+sudo_ttyname_dev_v1(dev_t tdev, char *name, size_t namelen)
+{
+    char *dev;
+    debug_decl(sudo_ttyname_dev, SUDO_DEBUG_UTIL);
+
+    /* Some versions of devname() return NULL on failure, others do not. */
+    dev = devname(tdev, S_IFCHR);
+    if (dev != NULL && *dev != '?' && *dev != '#') {
+	if (strlcpy(name, _PATH_DEV, namelen) < namelen &&
+	    strlcat(name, dev, namelen) < namelen)
+	    debug_return_str(name);
+	errno = ERANGE;
+    } else {
+	/* Not all versions of devname() set errno. */
+	errno = ENOENT;
+    }
+    debug_return_str(NULL);
+}
+#elif defined(HAVE__TTYNAME_DEV)
+extern char *_ttyname_dev(dev_t rdev, char *buffer, size_t buflen);
+
+/*
+ * Like ttyname() but uses a dev_t instead of an open fd.
+ * Returns name on success and NULL on failure, setting errno.
+ * This version is just a wrapper around _ttyname_dev().
+ */
+char *
+sudo_ttyname_dev_v1(dev_t tdev, char *name, size_t namelen)
+{
+    int serrno = errno;
+    debug_decl(sudo_ttyname_dev, SUDO_DEBUG_UTIL);
+
+    /*
+     * _ttyname_dev() sets errno to ERANGE if namelen is too small
+     * but does not modify it if tdev is not found.
+     */
+    errno = ENOENT;
+    if (_ttyname_dev(tdev, name, namelen) == NULL)
+	debug_return_str(NULL);
+    errno = serrno;
+
+    debug_return_str(name);
+}
+#else
+/*
+ * Device nodes to ignore.
+ */
+static const char *ignore_devs[] = {
+    _PATH_DEV "stdin",
+    _PATH_DEV "stdout",
+    _PATH_DEV "stderr",
+    NULL
+};
+
+/*
+ * Do a scan of a directory looking for the specified device.
+ * Does not descend into subdirectories.
+ * Returns name on success and NULL on failure, setting errno.
+ */
+static char *
+sudo_ttyname_scan(const char *dir, dev_t rdev, char *name, size_t namelen)
+{
+    size_t sdlen;
+    char pathbuf[PATH_MAX];
+    char *ret = NULL;
+    struct dirent *dp;
+    struct stat sb;
+    unsigned int i;
+    DIR *d = NULL;
+    debug_decl(sudo_ttyname_scan, SUDO_DEBUG_UTIL);
+
+    if (dir[0] == '\0') {
+	errno = ENOENT;
+	goto done;
+    }
+    if ((d = opendir(dir)) == NULL)
+	goto done;
+
+    if (fstat(dirfd(d), &sb) == -1) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "unable to fstat %s", dir);
+	goto done;
+    }
+    if ((sb.st_mode & S_IWOTH) != 0) {
+	sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+	    "ignoring world-writable directory %s", dir);
+	errno = ENOENT;
+	goto done;
+    }
+
+    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+	"scanning for dev %u in %s", (unsigned int)rdev, dir);
+
+    sdlen = strlen(dir);
+    while (sdlen > 0 && dir[sdlen - 1] == '/')
+	sdlen--;
+    if (sdlen + 1 >= sizeof(pathbuf)) {
+	errno = ERANGE;
+	goto done;
+    }
+    memcpy(pathbuf, dir, sdlen);
+    pathbuf[sdlen++] = '/';
+
+    while ((dp = readdir(d)) != NULL) {
+	/* Skip anything starting with "." */
+	if (dp->d_name[0] == '.')
+	    continue;
+
+	pathbuf[sdlen] = '\0';
+	if (strlcat(pathbuf, dp->d_name, sizeof(pathbuf)) >= sizeof(pathbuf)) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"%s%s is too big to fit in pathbuf", pathbuf, dp->d_name);
+	    continue;
+	}
+
+	/* Ignore device nodes listed in ignore_devs[]. */
+	for (i = 0; ignore_devs[i] != NULL; i++) {
+	    if (strcmp(pathbuf, ignore_devs[i]) == 0)
+		break;
+	}
+	if (ignore_devs[i] != NULL) {
+	    sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+		"ignoring %s", pathbuf);
+	    continue;
+	}
+
+# if defined(HAVE_STRUCT_DIRENT_D_TYPE)
+	/*
+	 * Avoid excessive stat() calls by checking dp->d_type.
+	 */
+	switch (dp->d_type) {
+	    case DT_CHR:
+	    case DT_LNK:
+	    case DT_UNKNOWN:
+		break;
+	    default:
+		/* Not a character device or link, skip it. */
+		sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
+		    "skipping non-device %s", pathbuf);
+		continue;
+	}
+# endif
+	if (stat(pathbuf, &sb) == -1) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+		"unable to stat %s", pathbuf);
+	    continue;
+	}
+	if (S_ISCHR(sb.st_mode) && sb.st_rdev == rdev) {
+	    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+		"resolved dev %u as %s", (unsigned int)rdev, pathbuf);
+	    if (strlcpy(name, pathbuf, namelen) < namelen) {
+		ret = name;
+	    } else {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "unable to store %s, have %zu, need %zu",
+		    pathbuf, namelen, strlen(pathbuf) + 1);
+		errno = ERANGE;
+	    }
+	    goto done;
+	}
+    }
+
+done:
+    if (d != NULL)
+	closedir(d);
+    debug_return_str(ret);
+}
+
+static char *
+sudo_dev_check(dev_t rdev, const char *devname, char *buf, size_t buflen)
+{
+    struct stat sb;
+    debug_decl(sudo_dev_check, SUDO_DEBUG_UTIL);
+
+    if (stat(devname, &sb) == 0) {
+	if (S_ISCHR(sb.st_mode) && sb.st_rdev == rdev) {
+	    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+		"comparing dev %u to %s: match!",
+		(unsigned int)rdev, devname);
+	    if (strlcpy(buf, devname, buflen) < buflen)
+		debug_return_str(buf);
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"unable to store %s, have %zu, need %zu",
+		devname, buflen, strlen(devname) + 1);
+	    errno = ERANGE;
+	}
+    }
+    sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,
+	"comparing dev %u to %s: no", (unsigned int)rdev, devname);
+    debug_return_str(NULL);
+}
+
+/*
+ * Like ttyname() but uses a dev_t instead of an open fd.
+ * Returns name on success and NULL on failure, setting errno.
+ * Generic version.
+ */
+char *
+sudo_ttyname_dev_v1(dev_t rdev, char *buf, size_t buflen)
+{
+    const char *devsearch, *devsearch_end;
+    char path[PATH_MAX], *ret;
+    const char *cp, *ep;
+    size_t len;
+    debug_decl(sudo_ttyname_dev, SUDO_DEBUG_UTIL);
+
+    /*
+     * First, check /dev/console.
+     */
+    ret = sudo_dev_check(rdev, _PATH_DEV "console", buf, buflen);
+    if (ret != NULL)
+	goto done;
+
+    /*
+     * Then check the device search path.
+     */
+    devsearch = sudo_conf_devsearch_path();
+    devsearch_end = devsearch + strlen(devsearch);
+    for (cp = sudo_strsplit(devsearch, devsearch_end, ":", &ep);
+	cp != NULL; cp = sudo_strsplit(NULL, devsearch_end, ":", &ep)) {
+
+	len = (size_t)(ep - cp);
+	if (len >= sizeof(path)) {
+	    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		"devsearch entry %.*s too long", (int)len, cp);
+	    continue;
+	}
+	memcpy(path, cp, len);
+	path[len] = '\0';
+
+	if (strcmp(path, _PATH_DEV "pts") == 0) {
+	    /* Special case /dev/pts */
+	    len = (size_t)snprintf(path, sizeof(path), "%spts/%u",
+		_PATH_DEV, (unsigned int)minor(rdev));
+	    if (len >= sizeof(path)) {
+		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
+		    "devsearch entry %spts/%u too long",
+		    _PATH_DEV, (unsigned int)minor(rdev));
+		continue;
+	    }
+	    ret = sudo_dev_check(rdev, path, buf, buflen);
+	    if (ret != NULL)
+		goto done;
+	} else {
+	    /* Scan path, looking for rdev. */
+	    ret = sudo_ttyname_scan(path, rdev, buf, buflen);
+	    if (ret != NULL || errno == ENOMEM)
+		goto done;
+	}
+    }
+
+done:
+    debug_return_str(ret);
+}
+#endif
diff --git a/lib/util/ttysize.c b/lib/util/ttysize.c
new file mode 100644
index 0000000..221ea92
--- /dev/null
+++ b/lib/util/ttysize.c
@@ -0,0 +1,71 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2010-2012, 2014-2015 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>		/* for struct winsize on HP-UX */
+#include <limits.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+static int
+get_ttysize_ioctl(int *rowp, int *colp)
+{
+    struct winsize wsize;
+    debug_decl(get_ttysize_ioctl, SUDO_DEBUG_UTIL);
+
+    if (ioctl(STDERR_FILENO, TIOCGWINSZ, &wsize) == 0 &&
+	wsize.ws_row != 0 && wsize.ws_col  != 0) {
+	*rowp = wsize.ws_row;
+	*colp = wsize.ws_col;
+	debug_return_int(0);
+    }
+    debug_return_int(-1);
+}
+
+void
+sudo_get_ttysize_v1(int *rowp, int *colp)
+{
+    debug_decl(sudo_get_ttysize, SUDO_DEBUG_UTIL);
+
+    if (get_ttysize_ioctl(rowp, colp) == -1) {
+	char *p;
+
+	/* Fall back on $LINES and $COLUMNS. */
+	if ((p = getenv("LINES")) == NULL ||
+	    (*rowp = sudo_strtonum(p, 1, INT_MAX, NULL)) <= 0) {
+	    *rowp = 24;
+	}
+	if ((p = getenv("COLUMNS")) == NULL ||
+	    (*colp = sudo_strtonum(p, 1, INT_MAX, NULL)) <= 0) {
+	    *colp = 80;
+	}
+    }
+
+    debug_return;
+}
diff --git a/lib/util/unlinkat.c b/lib/util/unlinkat.c
new file mode 100644
index 0000000..f1d590e
--- /dev/null
+++ b/lib/util/unlinkat.c
@@ -0,0 +1,60 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "sudo_compat.h"
+
+#ifndef HAVE_UNLINKAT
+int
+sudo_unlinkat(int dfd, const char *path, int flag)
+{
+    int odfd, ret;
+
+    if (dfd == AT_FDCWD)
+	return unlink(path);
+
+    /* Save cwd */
+    if ((odfd = open(".", O_RDONLY)) == -1)
+	return -1;
+
+    if (fchdir(dfd) == -1) {
+	close(odfd);
+	return -1;
+    }
+
+    ret = unlink(path);
+
+    /* Restore cwd */
+    if (fchdir(odfd) == -1) {
+	/* Should not happen */
+	ret = -1;
+    }
+    close(odfd);
+
+    return ret;
+}
+#endif /* HAVE_UNLINKAT */
diff --git a/lib/util/util.exp.in b/lib/util/util.exp.in
new file mode 100644
index 0000000..6c8130a
--- /dev/null
+++ b/lib/util/util.exp.in
@@ -0,0 +1,166 @@
+@COMPAT_EXP@initprogname
+initprogname2
+sudo_basename_v1
+sudo_conf_askpass_path_v1
+sudo_conf_clear_paths_v1
+sudo_conf_debug_files_v1
+sudo_conf_debugging_v1
+sudo_conf_developer_mode_v1
+sudo_conf_devsearch_path_v1
+sudo_conf_disable_coredump_v1
+sudo_conf_group_source_v1
+sudo_conf_intercept_path_v1
+sudo_conf_max_groups_v1
+sudo_conf_noexec_path_v1
+sudo_conf_plugin_dir_path_v1
+sudo_conf_plugins_v1
+sudo_conf_probe_interfaces_v1
+sudo_conf_read_v1
+sudo_conf_sesh_path_v1
+sudo_debug_deregister_v1
+sudo_debug_enter_v1
+sudo_debug_execve2_v1
+sudo_debug_exit_bool_v1
+sudo_debug_exit_id_t_v1
+sudo_debug_exit_int_v1
+sudo_debug_exit_long_v1
+sudo_debug_exit_ptr_v1
+sudo_debug_exit_size_t_v1
+sudo_debug_exit_ssize_t_v1
+sudo_debug_exit_str_masked_v1
+sudo_debug_exit_str_v1
+sudo_debug_exit_time_t_v1
+sudo_debug_exit_v1
+sudo_debug_fork_v1
+sudo_debug_get_active_instance_v1
+sudo_debug_get_fds_v1
+sudo_debug_get_instance_v1
+sudo_debug_needed_v1
+sudo_debug_parse_flags_v1
+sudo_debug_printf2_v1
+sudo_debug_register_v1
+sudo_debug_register_v2
+sudo_debug_set_active_instance_v1
+sudo_debug_update_fd_v1
+sudo_debug_vprintf2_v1
+sudo_debug_write2_v1
+sudo_digest_alloc_v1
+sudo_digest_final_v1
+sudo_digest_free_v1
+sudo_digest_getlen_v1
+sudo_digest_reset_v1
+sudo_digest_update_v1
+sudo_dso_findsym_v1
+sudo_dso_load_v1
+sudo_dso_preload_table_v1
+sudo_dso_strerror_v1
+sudo_dso_unload_v1
+sudo_ev_add_v1
+sudo_ev_add_v2
+sudo_ev_alloc_v1
+sudo_ev_base_alloc_v1
+sudo_ev_base_free_v1
+sudo_ev_base_setdef_v1
+sudo_ev_del_v1
+sudo_ev_dispatch_v1
+sudo_ev_free_v1
+sudo_ev_get_timeleft_v1
+sudo_ev_get_timeleft_v2
+sudo_ev_got_break_v1
+sudo_ev_got_exit_v1
+sudo_ev_loop_v1
+sudo_ev_loopbreak_v1
+sudo_ev_loopcontinue_v1
+sudo_ev_loopexit_v1
+sudo_ev_pending_v1
+sudo_ev_set_v1
+sudo_fatal_callback_deregister_v1
+sudo_fatal_callback_register_v1
+sudo_fatal_nodebug_v1
+sudo_fatalx_nodebug_v1
+sudo_gai_fatal_nodebug_v1
+sudo_gai_vfatal_nodebug_v1
+sudo_gai_vwarn_nodebug_v1
+sudo_gai_warn_nodebug_v1
+sudo_get_ttysize_v1
+sudo_getgrouplist2_v1
+sudo_gethostname_v1
+sudo_gettime_awake_v1
+sudo_gettime_mono_v1
+sudo_gettime_real_v1
+sudo_hexchar_v1
+sudo_json_add_value_as_object_v1
+sudo_json_add_value_v1
+sudo_json_close_array_v1
+sudo_json_close_object_v1
+sudo_json_free_v1
+sudo_json_get_buf_v1
+sudo_json_get_len_v1
+sudo_json_init_v1
+sudo_json_init_v2
+sudo_json_open_array_v1
+sudo_json_open_object_v1
+sudo_lbuf_append_esc_v1
+sudo_lbuf_append_quoted_v1
+sudo_lbuf_append_v1
+sudo_lbuf_clearerr_v1
+sudo_lbuf_destroy_v1
+sudo_lbuf_error_v1
+sudo_lbuf_init_v1
+sudo_lbuf_print_v1
+sudo_lock_file_v1
+sudo_lock_region_v1
+sudo_logfac2str_v1
+sudo_logpri2str_v1
+sudo_mkdir_parents_v1
+sudo_mmap_alloc_v1
+sudo_mmap_allocarray_v1
+sudo_mmap_free_v1
+sudo_mmap_protect_v1
+sudo_mmap_strdup_v1
+sudo_new_key_val_v1
+sudo_open_parent_dir_v1
+sudo_parse_gids_v1
+sudo_parseln_v1
+sudo_parseln_v2
+sudo_pow2_roundup_v1
+sudo_rcstr_addref
+sudo_rcstr_alloc
+sudo_rcstr_delref
+sudo_rcstr_dup
+sudo_regex_compile_v1
+sudo_secure_dir_v1
+sudo_secure_file_v1
+sudo_secure_open_dir_v1
+sudo_secure_open_file_v1
+sudo_setgroups_v1
+sudo_stat_multiarch_v1
+sudo_str2logfac_v1
+sudo_str2logpri_v1
+sudo_strsplit_v1
+sudo_strtobool_v1
+sudo_strtoid_v1
+sudo_strtoid_v2
+sudo_strtoidx_v1
+sudo_strtomode_v1
+sudo_strtonum
+sudo_term_cbreak_v1
+sudo_term_copy_v1
+sudo_term_eof
+sudo_term_erase
+sudo_term_is_raw_v1
+sudo_term_kill
+sudo_term_noecho_v1
+sudo_term_raw_v1
+sudo_term_restore_v1
+sudo_ttyname_dev_v1
+sudo_uuid_create_v1
+sudo_uuid_to_string_v1
+sudo_vfatal_nodebug_v1
+sudo_vfatalx_nodebug_v1
+sudo_vwarn_nodebug_v1
+sudo_vwarnx_nodebug_v1
+sudo_warn_nodebug_v1
+sudo_warn_set_conversation_v1
+sudo_warn_set_locale_func_v1
+sudo_warnx_nodebug_v1
diff --git a/lib/util/utimens.c b/lib/util/utimens.c
new file mode 100644
index 0000000..c6b8ee2
--- /dev/null
+++ b/lib/util/utimens.c
@@ -0,0 +1,200 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2015, 2018 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#if !defined(HAVE_FUTIMENS) || !defined(HAVE_UTIMENSAT)
+
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <errno.h>
+#include <time.h>
+#if !defined(HAVE_UTIMES) || defined(HAVE_FUTIME)
+# include <utime.h>
+#endif
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+
+#if !defined(HAVE_FUTIMES) && defined(HAVE_FUTIMESAT)
+# define futimes(_f, _tv)	futimesat(_f, NULL, _tv)
+# define HAVE_FUTIMES
+#endif
+
+#if defined(HAVE_ST_MTIM)
+# ifdef HAVE_ST__TIM
+#  define ATIME_TO_TIMEVAL(_x, _y)	TIMESPEC_TO_TIMEVAL((_x), &(_y)->st_atim.st__tim)
+#  define MTIME_TO_TIMEVAL(_x, _y)	TIMESPEC_TO_TIMEVAL((_x), &(_y)->st_mtim.st__tim)
+# else
+#  define ATIME_TO_TIMEVAL(_x, _y)	TIMESPEC_TO_TIMEVAL((_x), &(_y)->st_atim)
+#  define MTIME_TO_TIMEVAL(_x, _y)	TIMESPEC_TO_TIMEVAL((_x), &(_y)->st_mtim)
+# endif
+#elif defined(HAVE_ST_MTIMESPEC)
+# define ATIME_TO_TIMEVAL(_x, _y)	TIMESPEC_TO_TIMEVAL((_x), &(_y)->st_atimespec)
+# define MTIME_TO_TIMEVAL(_x, _y)	TIMESPEC_TO_TIMEVAL((_x), &(_y)->st_mtimespec)
+#elif defined(HAVE_ST_NMTIME)
+# define ATIME_TO_TIMEVAL(_x, _y)      do { (_x)->tv_sec = (_y)->st_atime; (_x)->tv_usec = (_y)->st_natime; } while (0)
+# define MTIME_TO_TIMEVAL(_x, _y)      do { (_x)->tv_sec = (_y)->st_mtime; (_x)->tv_usec = (_y)->st_nmtime; } while (0)
+#else
+# define ATIME_TO_TIMEVAL(_x, _y)      do { (_x)->tv_sec = (_y)->st_atime; (_x)->tv_usec = 0; } while (0)
+# define MTIME_TO_TIMEVAL(_x, _y)      do { (_x)->tv_sec = (_y)->st_mtime; (_x)->tv_usec = 0; } while (0)
+#endif /* HAVE_ST_MTIM */
+
+/*
+ * Convert the pair of timespec structs passed to futimens() / utimensat()
+ * to a pair of timeval structs, handling UTIME_OMIT and UTIME_NOW.
+ * Returns 0 on success and -1 on failure (setting errno).
+ */
+static int
+utimens_ts_to_tv(int fd, const char *file, const struct timespec *ts,
+    struct timeval *tv)
+{
+    TIMESPEC_TO_TIMEVAL(&tv[0], &ts[0]);
+    TIMESPEC_TO_TIMEVAL(&tv[1], &ts[1]);
+    if (ts[0].tv_nsec == UTIME_OMIT || ts[1].tv_nsec == UTIME_OMIT) {
+	struct stat sb;
+
+	if (fd != -1) {
+	    /* For futimens() */
+	    if (fstat(fd, &sb) == -1)
+		return -1;
+	} else {
+	    /* For utimensat() */
+	    if (stat(file, &sb) == -1)
+		return -1;
+	}
+	if (ts[0].tv_nsec == UTIME_OMIT)
+	    ATIME_TO_TIMEVAL(&tv[0], &sb);
+	if (ts[1].tv_nsec == UTIME_OMIT)
+	    MTIME_TO_TIMEVAL(&tv[1], &sb);
+    }
+    if (ts[0].tv_nsec == UTIME_NOW || ts[1].tv_nsec == UTIME_NOW) {
+	struct timeval now;
+
+	if (gettimeofday(&now, NULL) == -1)
+	    return -1;
+	if (ts[0].tv_nsec == UTIME_NOW)
+	    tv[0] = now;
+	if (ts[1].tv_nsec == UTIME_NOW)
+	    tv[1] = now;
+    }
+    return 0;
+}
+
+#if defined(HAVE_FUTIMES)
+/*
+ * Emulate futimens() via futimes()
+ */
+int
+sudo_futimens(int fd, const struct timespec *ts)
+{
+    struct timeval tv[2], *times = NULL;
+
+    if (ts != NULL) {
+	if (utimens_ts_to_tv(fd, NULL, ts, tv) == -1)
+	    return -1;
+	times = tv;
+    }
+    return futimes(fd, times);
+}
+#elif defined(HAVE_FUTIME)
+/*
+ * Emulate futimens() via futime()
+ */
+int
+sudo_futimens(int fd, const struct timespec *ts)
+{
+    struct utimbuf utb, *times = NULL;
+
+    if (ts != NULL) {
+	struct timeval tv[2];
+
+	if (utimens_ts_to_tv(fd, NULL, ts, tv) == -1)
+	    return -1;
+	utb.actime = (time_t)(tv[0].tv_sec + tv[0].tv_usec / 1000000);
+	utb.modtime = (time_t)(tv[1].tv_sec + tv[1].tv_usec / 1000000);
+	times = &utb;
+    }
+    return futime(fd, times);
+}
+#else
+/*
+ * Nothing to do but fail.
+ */
+int
+sudo_futimens(int fd, const struct timespec *ts)
+{
+    errno = ENOSYS;
+    return -1;
+}
+#endif /* HAVE_FUTIMES */
+
+#if defined(HAVE_UTIMES)
+/*
+ * Emulate utimensat() via utimes()
+ */
+int
+sudo_utimensat(int fd, const char *file, const struct timespec *ts, int flag)
+{
+    struct timeval tv[2], *times = NULL;
+
+    if (fd != AT_FDCWD || flag != 0) {
+	errno = ENOTSUP;
+	return -1;
+    }
+
+    if (ts != NULL) {
+	if (utimens_ts_to_tv(-1, file, ts, tv) == -1)
+	    return -1;
+	times = tv;
+    }
+    return utimes(file, times);
+}
+#else
+/*
+ * Emulate utimensat() via utime()
+ */
+int
+sudo_utimensat(int fd, const char *file, const struct timespec *ts, int flag)
+{
+    struct utimbuf utb, *times = NULL;
+
+    if (fd != AT_FDCWD || flag != 0) {
+	errno = ENOTSUP;
+	return -1;
+    }
+
+    if (ts != NULL) {
+	struct timeval tv[2];
+
+	if (utimens_ts_to_tv(-1, file, ts, tv) == -1)
+	    return -1;
+	utb.actime = (time_t)(tv[0].tv_sec + tv[0].tv_usec / 1000000);
+	utb.modtime = (time_t)(tv[1].tv_sec + tv[1].tv_usec / 1000000);
+	times = &utb;
+    }
+    return utime(file, times);
+}
+#endif /* !HAVE_UTIMES */
+
+#endif /* !HAVE_FUTIMENS && !HAVE_UTIMENSAT */
diff --git a/lib/util/uuid.c b/lib/util/uuid.c
new file mode 100644
index 0000000..77efdfe
--- /dev/null
+++ b/lib/util/uuid.c
@@ -0,0 +1,99 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#if defined(HAVE_STDINT_H)
+# include <stdint.h>
+#elif defined(HAVE_INTTYPES_H)
+# include <inttypes.h>
+#endif
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "sudo_compat.h"
+#include "sudo_util.h"
+#include "sudo_rand.h"
+
+struct uuid {
+    uint32_t time_low;
+    uint16_t time_mid;
+    uint16_t time_hi_and_version;
+    uint8_t clock_seq_hi_and_reserved;
+    uint8_t clock_seq_low;
+    uint8_t node[6];
+};
+
+/*
+ * Create a type 4 (random), variant 1 universally unique identifier (UUID).
+ * As per RFC 4122 section 4.4.
+ */
+void
+sudo_uuid_create_v1(unsigned char uuid_out[16])
+{
+    struct uuid uuid;
+
+    arc4random_buf(&uuid, sizeof(uuid));
+
+    /* Set version to 4 (random), 4 most significant bits (12-15) are 0010. */
+    uuid.time_hi_and_version &= 0x0fff;
+    uuid.time_hi_and_version |= 0x4000;
+
+    /* Set variant to 1: two most significant bits (6 and 7) are 01. */
+    uuid.clock_seq_hi_and_reserved &= 0x3f;
+    uuid.clock_seq_hi_and_reserved |= 0x80;
+
+    memcpy(uuid_out, &uuid, 16);
+}
+
+/*
+ * Format a uuid as a 36-byte string (plus one for the NUL).
+ */
+char *
+sudo_uuid_to_string_v1(unsigned char uuid[16], char *dst, size_t dstsiz)
+{
+    const char hex[] = "0123456789abcdef";
+    char *cp = dst;
+    int i;
+
+    if (dstsiz < sizeof("123e4567-e89b-12d3-a456-426655440000"))
+	return NULL;
+
+    for (i = 0; i < 16; i++) {
+	*cp++ = hex[uuid[i] >> 4];
+	*cp++ = hex[uuid[i] & 0x0f];
+
+	switch (i) {
+	case 4:
+	case 6:
+	case 8:
+	case 10:
+	    *cp++ = '-';
+	    break;
+	}
+    }
+    *cp = '\0';
+
+    return dst;
+}
diff --git a/lib/zlib/Makefile.in b/lib/zlib/Makefile.in
new file mode 100644
index 0000000..098cc4f
--- /dev/null
+++ b/lib/zlib/Makefile.in
@@ -0,0 +1,230 @@
+#
+# SPDX-License-Identifier: ISC
+#
+# Copyright (c) 2011-2018 Todd C. Miller <Todd.Miller@sudo.ws>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# @configure_input@
+#
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+abs_srcdir = @abs_srcdir@
+top_srcdir = @top_srcdir@
+abs_top_srcdir = @abs_top_srcdir@
+top_builddir = @top_builddir@
+abs_top_builddir = @abs_top_builddir@
+scriptdir = $(top_srcdir)/scripts
+cross_compiling = @CROSS_COMPILING@
+
+# Where to install things...
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+bindir = @bindir@
+sbindir = @sbindir@
+sysconfdir = @sysconfdir@
+libexecdir = @libexecdir@
+datarootdir = @datarootdir@
+localstatedir = @localstatedir@
+
+# File extension, mode and map file to use for shared libraries/objects
+shlib_enable = @SHLIB_ENABLE@
+shlib_mode = @SHLIB_MODE@
+shlib_exp = $(srcdir)/zlib.exp
+shlib_map = zlib.map
+shlib_opt = zlib.opt
+
+# Compiler & tools to use
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+SED = @SED@
+AWK = @AWK@
+
+# Our install program supports extra flags...
+INSTALL = $(SHELL) $(scriptdir)/install-sh -c
+INSTALL_OWNER = -o $(install_uid) -g $(install_gid)
+INSTALL_BACKUP = @INSTALL_BACKUP@
+
+# C preprocessor flags
+CPPFLAGS = -I. -I$(srcdir)
+
+# Usually -O and/or -g
+CFLAGS = @CFLAGS@
+
+# Flags to pass to the link stage
+LDFLAGS =
+LT_LDFLAGS = @ZLIB_LDFLAGS@ @LT_LDFLAGS@ @LT_LDEXPORTS@
+
+# Flags to pass to libtool
+LTFLAGS =
+
+# Address sanitizer flags
+ASAN_CFLAGS = @ASAN_CFLAGS@
+ASAN_LDFLAGS = @ASAN_LDFLAGS@
+
+# PIE flags
+PIE_CFLAGS = @PIE_CFLAGS@
+PIE_LDFLAGS = @PIE_LDFLAGS@
+
+# Stack smashing protection flags
+HARDENING_CFLAGS = @HARDENING_CFLAGS@
+HARDENING_LDFLAGS = @HARDENING_LDFLAGS@
+
+# Libtool style shared library version
+SHLIB_VERSION = 0:0:0
+
+# User and group ids the installed files should be "owned" by
+install_uid = 0
+install_gid = 0
+
+#### End of system configuration section. ####
+
+SHELL = @SHELL@
+
+LTOBJS = adler32.lo compress.lo crc32.lo deflate.lo gzclose.lo gzlib.lo \
+	 gzread.lo gzwrite.lo infback.lo inffast.lo inflate.lo inftrees.lo \
+	 trees.lo uncompr.lo zutil.lo
+
+all: libsudo_z.la
+
+depend:
+	$(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \
+	    --builddir=$(abs_top_builddir) lib/zlib/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/zlib/Makefile
+
+Makefile: $(srcdir)/Makefile.in
+	cd $(top_builddir) && ./config.status --file lib/zlib/Makefile
+
+.SUFFIXES: .c .h .lo
+
+.c.lo:
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $<
+
+$(shlib_map): $(shlib_exp)
+	@$(AWK) 'BEGIN { print "{\n\tglobal:" } { print "\t\t"$$0";" } END { print "\tlocal:\n\t\t*;\n};" }' $(shlib_exp) > $@
+
+$(shlib_opt): $(shlib_exp)
+	@$(SED) 's/^/+e /' $(shlib_exp) > $@
+
+libsudo_z.la: $(LTOBJS) @LT_LDDEP@
+	case "$(LT_LDFLAGS)" in \
+	*-no-install*) \
+	    $(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LDFLAGS) $(LT_LDFLAGS) $(LTOBJS);; \
+	*) \
+	    $(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(LDFLAGS) $(ASAN_LDFLAGS) $(HARDENING_LDFLAGS) $(LT_LDFLAGS) $(LTOBJS) -version-info $(SHLIB_VERSION) -rpath $(libexecdir)/sudo;; \
+	esac
+
+pre-install:
+
+install:
+	case "$(LT_LDFLAGS)" in \
+	*-no-install*) ;; \
+	*)  if [ X"$(shlib_enable)" = X"yes" ]; then \
+		INSTALL_BACKUP='$(INSTALL_BACKUP)' $(LIBTOOL) $(LTFLAGS) --quiet --mode=install $(INSTALL) $(INSTALL_OWNER) libsudo_z.la $(DESTDIR)$(libexecdir)/sudo; \
+	    fi;; \
+	esac
+
+install-dirs:
+
+install-binaries:
+
+install-includes:
+
+install-doc:
+
+install-plugin:
+
+install-fuzzer:
+
+uninstall:
+	$(LIBTOOL) $(LTFLAGS) --mode=uninstall rm -f $(DESTDIR)$(libexecdir)/sudo/libsudo_z.la
+	-test -z "$(INSTALL_BACKUP)" || \
+	    rf -f $(DESTDIR)$(libexecdir)/sudo/libsudo_z.*~
+
+splint:
+
+cppcheck:
+
+pvs-log-files:
+
+pvs-studio:
+
+fuzz:
+
+check-fuzzer:
+
+check: check-fuzzer
+
+check-verbose: check
+
+clean:
+	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f *.lo *.o *.la
+	-rm -f stamp-* core *.core core.*
+
+mostlyclean: clean
+
+distclean: clean
+	-rm -rf Makefile .libs zconf.h
+
+clobber: distclean
+
+realclean: distclean
+	rm -f TAGS tags
+
+cleandir: realclean
+
+.PHONY: clean mostlyclean distclean cleandir clobber realclean
+
+# Autogenerated dependencies, do not modify
+adler32.lo: $(srcdir)/adler32.c $(srcdir)/zlib.h $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/adler32.c
+compress.lo: $(srcdir)/compress.c $(srcdir)/zlib.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/compress.c
+crc32.lo: $(srcdir)/crc32.c $(srcdir)/crc32.h $(srcdir)/zlib.h \
+          $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/crc32.c
+deflate.lo: $(srcdir)/deflate.c $(srcdir)/deflate.h $(srcdir)/zlib.h \
+            $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/deflate.c
+gzclose.lo: $(srcdir)/gzclose.c $(srcdir)/gzguts.h $(srcdir)/zlib.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gzclose.c
+gzlib.lo: $(srcdir)/gzlib.c $(srcdir)/gzguts.h $(srcdir)/zlib.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gzlib.c
+gzread.lo: $(srcdir)/gzread.c $(srcdir)/gzguts.h $(srcdir)/zlib.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gzread.c
+gzwrite.lo: $(srcdir)/gzwrite.c $(srcdir)/gzguts.h $(srcdir)/zlib.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/gzwrite.c
+infback.lo: $(srcdir)/infback.c $(srcdir)/inffast.h $(srcdir)/inffixed.h \
+            $(srcdir)/inflate.h $(srcdir)/inftrees.h $(srcdir)/zlib.h \
+            $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/infback.c
+inffast.lo: $(srcdir)/inffast.c $(srcdir)/inffast.h $(srcdir)/inflate.h \
+            $(srcdir)/inftrees.h $(srcdir)/zlib.h $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/inffast.c
+inflate.lo: $(srcdir)/inflate.c $(srcdir)/inffast.h $(srcdir)/inffixed.h \
+            $(srcdir)/inflate.h $(srcdir)/inftrees.h $(srcdir)/zlib.h \
+            $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/inflate.c
+inftrees.lo: $(srcdir)/inftrees.c $(srcdir)/inftrees.h $(srcdir)/zlib.h \
+             $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/inftrees.c
+trees.lo: $(srcdir)/trees.c $(srcdir)/deflate.h $(srcdir)/trees.h \
+          $(srcdir)/zlib.h $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/trees.c
+uncompr.lo: $(srcdir)/uncompr.c $(srcdir)/zlib.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/uncompr.c
+zutil.lo: $(srcdir)/zutil.c $(srcdir)/gzguts.h $(srcdir)/zlib.h \
+          $(srcdir)/zutil.h ./zconf.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/zutil.c
diff --git a/lib/zlib/adler32.c b/lib/zlib/adler32.c
new file mode 100644
index 0000000..d0be438
--- /dev/null
+++ b/lib/zlib/adler32.c
@@ -0,0 +1,186 @@
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995-2011, 2016 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#include "zutil.h"
+
+local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
+
+#define BASE 65521U     /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf,i)  {adler += (buf)[i]; sum2 += adler;}
+#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf)   DO8(buf,0); DO8(buf,8);
+
+/* use NO_DIVIDE if your processor does not do division in hardware --
+   try it both ways to see which is faster */
+#ifdef NO_DIVIDE
+/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
+   (thank you to John Reiser for pointing this out) */
+#  define CHOP(a) \
+    do { \
+        unsigned long tmp = a >> 16; \
+        a &= 0xffffUL; \
+        a += (tmp << 4) - tmp; \
+    } while (0)
+#  define MOD28(a) \
+    do { \
+        CHOP(a); \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#  define MOD(a) \
+    do { \
+        CHOP(a); \
+        MOD28(a); \
+    } while (0)
+#  define MOD63(a) \
+    do { /* this assumes a is not negative */ \
+        z_off64_t tmp = a >> 32; \
+        a &= 0xffffffffL; \
+        a += (tmp << 8) - (tmp << 5) + tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#else
+#  define MOD(a) a %= BASE
+#  define MOD28(a) a %= BASE
+#  define MOD63(a) a %= BASE
+#endif
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_z(adler, buf, len)
+    uLong adler;
+    const Bytef *buf;
+    z_size_t len;
+{
+    unsigned long sum2;
+    unsigned n;
+
+    /* split Adler-32 into component sums */
+    sum2 = (adler >> 16) & 0xffff;
+    adler &= 0xffff;
+
+    /* in case user likes doing a byte at a time, keep it fast */
+    if (len == 1) {
+        adler += buf[0];
+        if (adler >= BASE)
+            adler -= BASE;
+        sum2 += adler;
+        if (sum2 >= BASE)
+            sum2 -= BASE;
+        return adler | (sum2 << 16);
+    }
+
+    /* initial Adler-32 value (deferred check for len == 1 speed) */
+    if (buf == Z_NULL)
+        return 1L;
+
+    /* in case short lengths are provided, keep it somewhat fast */
+    if (len < 16) {
+        while (len--) {
+            adler += *buf++;
+            sum2 += adler;
+        }
+        if (adler >= BASE)
+            adler -= BASE;
+        MOD28(sum2);            /* only added so many BASE's */
+        return adler | (sum2 << 16);
+    }
+
+    /* do length NMAX blocks -- requires just one modulo operation */
+    while (len >= NMAX) {
+        len -= NMAX;
+        n = NMAX / 16;          /* NMAX is divisible by 16 */
+        do {
+            DO16(buf);          /* 16 sums unrolled */
+            buf += 16;
+        } while (--n);
+        MOD(adler);
+        MOD(sum2);
+    }
+
+    /* do remaining bytes (less than NMAX, still just one modulo) */
+    if (len) {                  /* avoid modulos if none remaining */
+        while (len >= 16) {
+            len -= 16;
+            DO16(buf);
+            buf += 16;
+        }
+        while (len--) {
+            adler += *buf++;
+            sum2 += adler;
+        }
+        MOD(adler);
+        MOD(sum2);
+    }
+
+    /* return recombined sums */
+    return adler | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32(adler, buf, len)
+    uLong adler;
+    const Bytef *buf;
+    uInt len;
+{
+    return adler32_z(adler, buf, len);
+}
+
+/* ========================================================================= */
+local uLong adler32_combine_(adler1, adler2, len2)
+    uLong adler1;
+    uLong adler2;
+    z_off64_t len2;
+{
+    unsigned long sum1;
+    unsigned long sum2;
+    unsigned rem;
+
+    /* for negative len, return invalid adler32 as a clue for debugging */
+    if (len2 < 0)
+        return 0xffffffffUL;
+
+    /* the derivation of this formula is left as an exercise for the reader */
+    MOD63(len2);                /* assumes len2 >= 0 */
+    rem = (unsigned)len2;
+    sum1 = adler1 & 0xffff;
+    sum2 = rem * sum1;
+    MOD(sum2);
+    sum1 += (adler2 & 0xffff) + BASE - 1;
+    sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
+    if (sum1 >= BASE) sum1 -= BASE;
+    if (sum1 >= BASE) sum1 -= BASE;
+    if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
+    if (sum2 >= BASE) sum2 -= BASE;
+    return sum1 | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_combine(adler1, adler2, len2)
+    uLong adler1;
+    uLong adler2;
+    z_off_t len2;
+{
+    return adler32_combine_(adler1, adler2, len2);
+}
+
+uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
+    uLong adler1;
+    uLong adler2;
+    z_off64_t len2;
+{
+    return adler32_combine_(adler1, adler2, len2);
+}
diff --git a/lib/zlib/compress.c b/lib/zlib/compress.c
new file mode 100644
index 0000000..2ad5326
--- /dev/null
+++ b/lib/zlib/compress.c
@@ -0,0 +1,86 @@
+/* compress.c -- compress a memory buffer
+ * Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+/* ===========================================================================
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+int ZEXPORT compress2(dest, destLen, source, sourceLen, level)
+    Bytef *dest;
+    uLongf *destLen;
+    const Bytef *source;
+    uLong sourceLen;
+    int level;
+{
+    z_stream stream;
+    int err;
+    const uInt max = (uInt)-1;
+    uLong left;
+
+    left = *destLen;
+    *destLen = 0;
+
+    stream.zalloc = (alloc_func)0;
+    stream.zfree = (free_func)0;
+    stream.opaque = (voidpf)0;
+
+    err = deflateInit(&stream, level);
+    if (err != Z_OK) return err;
+
+    stream.next_out = dest;
+    stream.avail_out = 0;
+    stream.next_in = (z_const Bytef *)source;
+    stream.avail_in = 0;
+
+    do {
+        if (stream.avail_out == 0) {
+            stream.avail_out = left > (uLong)max ? max : (uInt)left;
+            left -= stream.avail_out;
+        }
+        if (stream.avail_in == 0) {
+            stream.avail_in = sourceLen > (uLong)max ? max : (uInt)sourceLen;
+            sourceLen -= stream.avail_in;
+        }
+        err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH);
+    } while (err == Z_OK);
+
+    *destLen = stream.total_out;
+    deflateEnd(&stream);
+    return err == Z_STREAM_END ? Z_OK : err;
+}
+
+/* ===========================================================================
+ */
+int ZEXPORT compress(dest, destLen, source, sourceLen)
+    Bytef *dest;
+    uLongf *destLen;
+    const Bytef *source;
+    uLong sourceLen;
+{
+    return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
+}
+
+/* ===========================================================================
+     If the default memLevel or windowBits for deflateInit() is changed, then
+   this function needs to be updated.
+ */
+uLong ZEXPORT compressBound(sourceLen)
+    uLong sourceLen;
+{
+    return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
+           (sourceLen >> 25) + 13;
+}
diff --git a/lib/zlib/crc32.c b/lib/zlib/crc32.c
new file mode 100644
index 0000000..f8357b0
--- /dev/null
+++ b/lib/zlib/crc32.c
@@ -0,0 +1,1125 @@
+/* crc32.c -- compute the CRC-32 of a data stream
+ * Copyright (C) 1995-2022 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ *
+ * This interleaved implementation of a CRC makes use of pipelined multiple
+ * arithmetic-logic units, commonly found in modern CPU cores. It is due to
+ * Kadatch and Jenkins (2010). See doc/crc-doc.1.0.pdf in this distribution.
+ */
+
+/* @(#) $Id$ */
+
+/*
+  Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
+  protection on the static variables used to control the first-use generation
+  of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
+  first call get_crc_table() to initialize the tables before allowing more than
+  one thread to use crc32().
+
+  MAKECRCH can be #defined to write out crc32.h. A main() routine is also
+  produced, so that this one source file can be compiled to an executable.
+ */
+
+#ifdef MAKECRCH
+#  include <stdio.h>
+#  ifndef DYNAMIC_CRC_TABLE
+#    define DYNAMIC_CRC_TABLE
+#  endif /* !DYNAMIC_CRC_TABLE */
+#endif /* MAKECRCH */
+
+#include "zutil.h"      /* for Z_U4, Z_U8, z_crc_t, and FAR definitions */
+
+ /*
+  A CRC of a message is computed on N braids of words in the message, where
+  each word consists of W bytes (4 or 8). If N is 3, for example, then three
+  running sparse CRCs are calculated respectively on each braid, at these
+  indices in the array of words: 0, 3, 6, ..., 1, 4, 7, ..., and 2, 5, 8, ...
+  This is done starting at a word boundary, and continues until as many blocks
+  of N * W bytes as are available have been processed. The results are combined
+  into a single CRC at the end. For this code, N must be in the range 1..6 and
+  W must be 4 or 8. The upper limit on N can be increased if desired by adding
+  more #if blocks, extending the patterns apparent in the code. In addition,
+  crc32.h would need to be regenerated, if the maximum N value is increased.
+
+  N and W are chosen empirically by benchmarking the execution time on a given
+  processor. The choices for N and W below were based on testing on Intel Kaby
+  Lake i7, AMD Ryzen 7, ARM Cortex-A57, Sparc64-VII, PowerPC POWER9, and MIPS64
+  Octeon II processors. The Intel, AMD, and ARM processors were all fastest
+  with N=5, W=8. The Sparc, PowerPC, and MIPS64 were all fastest at N=5, W=4.
+  They were all tested with either gcc or clang, all using the -O3 optimization
+  level. Your mileage may vary.
+ */
+
+/* Define N */
+#ifdef Z_TESTN
+#  define N Z_TESTN
+#else
+#  define N 5
+#endif
+#if N < 1 || N > 6
+#  error N must be in 1..6
+#endif
+
+/*
+  z_crc_t must be at least 32 bits. z_word_t must be at least as long as
+  z_crc_t. It is assumed here that z_word_t is either 32 bits or 64 bits, and
+  that bytes are eight bits.
+ */
+
+/*
+  Define W and the associated z_word_t type. If W is not defined, then a
+  braided calculation is not used, and the associated tables and code are not
+  compiled.
+ */
+#ifdef Z_TESTW
+#  if Z_TESTW-1 != -1
+#    define W Z_TESTW
+#  endif
+#else
+#  ifdef MAKECRCH
+#    define W 8         /* required for MAKECRCH */
+#  else
+#    if defined(__x86_64__) || defined(__aarch64__)
+#      define W 8
+#    else
+#      define W 4
+#    endif
+#  endif
+#endif
+#ifdef W
+#  if W == 8 && defined(Z_U8)
+     typedef Z_U8 z_word_t;
+#  elif defined(Z_U4)
+#    undef W
+#    define W 4
+     typedef Z_U4 z_word_t;
+#  else
+#    undef W
+#  endif
+#endif
+
+/* If available, use the ARM processor CRC32 instruction. */
+#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
+#  define ARMCRC32
+#endif
+
+/* Local functions. */
+local z_crc_t multmodp OF((z_crc_t a, z_crc_t b));
+local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
+
+#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
+    local z_word_t byte_swap OF((z_word_t word));
+#endif
+
+#if defined(W) && !defined(ARMCRC32)
+    local z_crc_t crc_word OF((z_word_t data));
+    local z_word_t crc_word_big OF((z_word_t data));
+#endif
+
+#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
+/*
+  Swap the bytes in a z_word_t to convert between little and big endian. Any
+  self-respecting compiler will optimize this to a single machine byte-swap
+  instruction, if one is available. This assumes that word_t is either 32 bits
+  or 64 bits.
+ */
+local z_word_t byte_swap(word)
+    z_word_t word;
+{
+#  if W == 8
+    return
+        (word & 0xff00000000000000) >> 56 |
+        (word & 0xff000000000000) >> 40 |
+        (word & 0xff0000000000) >> 24 |
+        (word & 0xff00000000) >> 8 |
+        (word & 0xff000000) << 8 |
+        (word & 0xff0000) << 24 |
+        (word & 0xff00) << 40 |
+        (word & 0xff) << 56;
+#  else   /* W == 4 */
+    return
+        (word & 0xff000000) >> 24 |
+        (word & 0xff0000) >> 8 |
+        (word & 0xff00) << 8 |
+        (word & 0xff) << 24;
+#  endif
+}
+#endif
+
+/* CRC polynomial. */
+#define POLY 0xedb88320         /* p(x) reflected, with x^32 implied */
+
+#ifdef DYNAMIC_CRC_TABLE
+
+local z_crc_t FAR crc_table[256];
+local z_crc_t FAR x2n_table[32];
+local void make_crc_table OF((void));
+#ifdef W
+   local z_word_t FAR crc_big_table[256];
+   local z_crc_t FAR crc_braid_table[W][256];
+   local z_word_t FAR crc_braid_big_table[W][256];
+   local void braid OF((z_crc_t [][256], z_word_t [][256], int, int));
+#endif
+#ifdef MAKECRCH
+   local void write_table OF((FILE *, const z_crc_t FAR *, int));
+   local void write_table32hi OF((FILE *, const z_word_t FAR *, int));
+   local void write_table64 OF((FILE *, const z_word_t FAR *, int));
+#endif /* MAKECRCH */
+
+/*
+  Define a once() function depending on the availability of atomics. If this is
+  compiled with DYNAMIC_CRC_TABLE defined, and if CRCs will be computed in
+  multiple threads, and if atomics are not available, then get_crc_table() must
+  be called to initialize the tables and must return before any threads are
+  allowed to compute or combine CRCs.
+ */
+
+/* Definition of once functionality. */
+typedef struct once_s once_t;
+local void once OF((once_t *, void (*)(void)));
+
+/* Check for the availability of atomics. */
+#if defined(__STDC__) && __STDC_VERSION__ >= 201112L && \
+    !defined(__STDC_NO_ATOMICS__)
+
+#include <stdatomic.h>
+
+/* Structure for once(), which must be initialized with ONCE_INIT. */
+struct once_s {
+    atomic_flag begun;
+    atomic_int done;
+};
+#define ONCE_INIT {ATOMIC_FLAG_INIT, 0}
+
+/*
+  Run the provided init() function exactly once, even if multiple threads
+  invoke once() at the same time. The state must be a once_t initialized with
+  ONCE_INIT.
+ */
+local void once(state, init)
+    once_t *state;
+    void (*init)(void);
+{
+    if (!atomic_load(&state->done)) {
+        if (atomic_flag_test_and_set(&state->begun))
+            while (!atomic_load(&state->done))
+                ;
+        else {
+            init();
+            atomic_store(&state->done, 1);
+        }
+    }
+}
+
+#else   /* no atomics */
+
+/* Structure for once(), which must be initialized with ONCE_INIT. */
+struct once_s {
+    volatile int begun;
+    volatile int done;
+};
+#define ONCE_INIT {0, 0}
+
+/* Test and set. Alas, not atomic, but tries to minimize the period of
+   vulnerability. */
+local int test_and_set OF((int volatile *));
+local int test_and_set(flag)
+    int volatile *flag;
+{
+    int was;
+
+    was = *flag;
+    *flag = 1;
+    return was;
+}
+
+/* Run the provided init() function once. This is not thread-safe. */
+local void once(state, init)
+    once_t *state;
+    void (*init)(void);
+{
+    if (!state->done) {
+        if (test_and_set(&state->begun))
+            while (!state->done)
+                ;
+        else {
+            init();
+            state->done = 1;
+        }
+    }
+}
+
+#endif
+
+/* State for once(). */
+local once_t made = ONCE_INIT;
+
+/*
+  Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
+  x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
+
+  Polynomials over GF(2) are represented in binary, one bit per coefficient,
+  with the lowest powers in the most significant bit. Then adding polynomials
+  is just exclusive-or, and multiplying a polynomial by x is a right shift by
+  one. If we call the above polynomial p, and represent a byte as the
+  polynomial q, also with the lowest power in the most significant bit (so the
+  byte 0xb1 is the polynomial x^7+x^3+x^2+1), then the CRC is (q*x^32) mod p,
+  where a mod b means the remainder after dividing a by b.
+
+  This calculation is done using the shift-register method of multiplying and
+  taking the remainder. The register is initialized to zero, and for each
+  incoming bit, x^32 is added mod p to the register if the bit is a one (where
+  x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by x
+  (which is shifting right by one and adding x^32 mod p if the bit shifted out
+  is a one). We start with the highest power (least significant bit) of q and
+  repeat for all eight bits of q.
+
+  The table is simply the CRC of all possible eight bit values. This is all the
+  information needed to generate CRCs on data a byte at a time for all
+  combinations of CRC register values and incoming bytes.
+ */
+
+local void make_crc_table()
+{
+    unsigned i, j, n;
+    z_crc_t p;
+
+    /* initialize the CRC of bytes tables */
+    for (i = 0; i < 256; i++) {
+        p = i;
+        for (j = 0; j < 8; j++)
+            p = p & 1 ? (p >> 1) ^ POLY : p >> 1;
+        crc_table[i] = p;
+#ifdef W
+        crc_big_table[i] = byte_swap(p);
+#endif
+    }
+
+    /* initialize the x^2^n mod p(x) table */
+    p = (z_crc_t)1 << 30;         /* x^1 */
+    x2n_table[0] = p;
+    for (n = 1; n < 32; n++)
+        x2n_table[n] = p = multmodp(p, p);
+
+#ifdef W
+    /* initialize the braiding tables -- needs x2n_table[] */
+    braid(crc_braid_table, crc_braid_big_table, N, W);
+#endif
+
+#ifdef MAKECRCH
+    {
+        /*
+          The crc32.h header file contains tables for both 32-bit and 64-bit
+          z_word_t's, and so requires a 64-bit type be available. In that case,
+          z_word_t must be defined to be 64-bits. This code then also generates
+          and writes out the tables for the case that z_word_t is 32 bits.
+         */
+#if !defined(W) || W != 8
+#  error Need a 64-bit integer type in order to generate crc32.h.
+#endif
+        FILE *out;
+        int k, n;
+        z_crc_t ltl[8][256];
+        z_word_t big[8][256];
+
+        out = fopen("crc32.h", "w");
+        if (out == NULL) return;
+
+        /* write out little-endian CRC table to crc32.h */
+        fprintf(out,
+            "/* crc32.h -- tables for rapid CRC calculation\n"
+            " * Generated automatically by crc32.c\n */\n"
+            "\n"
+            "local const z_crc_t FAR crc_table[] = {\n"
+            "    ");
+        write_table(out, crc_table, 256);
+        fprintf(out,
+            "};\n");
+
+        /* write out big-endian CRC table for 64-bit z_word_t to crc32.h */
+        fprintf(out,
+            "\n"
+            "#ifdef W\n"
+            "\n"
+            "#if W == 8\n"
+            "\n"
+            "local const z_word_t FAR crc_big_table[] = {\n"
+            "    ");
+        write_table64(out, crc_big_table, 256);
+        fprintf(out,
+            "};\n");
+
+        /* write out big-endian CRC table for 32-bit z_word_t to crc32.h */
+        fprintf(out,
+            "\n"
+            "#else /* W == 4 */\n"
+            "\n"
+            "local const z_word_t FAR crc_big_table[] = {\n"
+            "    ");
+        write_table32hi(out, crc_big_table, 256);
+        fprintf(out,
+            "};\n"
+            "\n"
+            "#endif\n");
+
+        /* write out braid tables for each value of N */
+        for (n = 1; n <= 6; n++) {
+            fprintf(out,
+            "\n"
+            "#if N == %d\n", n);
+
+            /* compute braid tables for this N and 64-bit word_t */
+            braid(ltl, big, n, 8);
+
+            /* write out braid tables for 64-bit z_word_t to crc32.h */
+            fprintf(out,
+            "\n"
+            "#if W == 8\n"
+            "\n"
+            "local const z_crc_t FAR crc_braid_table[][256] = {\n");
+            for (k = 0; k < 8; k++) {
+                fprintf(out, "   {");
+                write_table(out, ltl[k], 256);
+                fprintf(out, "}%s", k < 7 ? ",\n" : "");
+            }
+            fprintf(out,
+            "};\n"
+            "\n"
+            "local const z_word_t FAR crc_braid_big_table[][256] = {\n");
+            for (k = 0; k < 8; k++) {
+                fprintf(out, "   {");
+                write_table64(out, big[k], 256);
+                fprintf(out, "}%s", k < 7 ? ",\n" : "");
+            }
+            fprintf(out,
+            "};\n");
+
+            /* compute braid tables for this N and 32-bit word_t */
+            braid(ltl, big, n, 4);
+
+            /* write out braid tables for 32-bit z_word_t to crc32.h */
+            fprintf(out,
+            "\n"
+            "#else /* W == 4 */\n"
+            "\n"
+            "local const z_crc_t FAR crc_braid_table[][256] = {\n");
+            for (k = 0; k < 4; k++) {
+                fprintf(out, "   {");
+                write_table(out, ltl[k], 256);
+                fprintf(out, "}%s", k < 3 ? ",\n" : "");
+            }
+            fprintf(out,
+            "};\n"
+            "\n"
+            "local const z_word_t FAR crc_braid_big_table[][256] = {\n");
+            for (k = 0; k < 4; k++) {
+                fprintf(out, "   {");
+                write_table32hi(out, big[k], 256);
+                fprintf(out, "}%s", k < 3 ? ",\n" : "");
+            }
+            fprintf(out,
+            "};\n"
+            "\n"
+            "#endif\n"
+            "\n"
+            "#endif\n");
+        }
+        fprintf(out,
+            "\n"
+            "#endif\n");
+
+        /* write out zeros operator table to crc32.h */
+        fprintf(out,
+            "\n"
+            "local const z_crc_t FAR x2n_table[] = {\n"
+            "    ");
+        write_table(out, x2n_table, 32);
+        fprintf(out,
+            "};\n");
+        fclose(out);
+    }
+#endif /* MAKECRCH */
+}
+
+#ifdef MAKECRCH
+
+/*
+   Write the 32-bit values in table[0..k-1] to out, five per line in
+   hexadecimal separated by commas.
+ */
+local void write_table(out, table, k)
+    FILE *out;
+    const z_crc_t FAR *table;
+    int k;
+{
+    int n;
+
+    for (n = 0; n < k; n++)
+        fprintf(out, "%s0x%08lx%s", n == 0 || n % 5 ? "" : "    ",
+                (unsigned long)(table[n]),
+                n == k - 1 ? "" : (n % 5 == 4 ? ",\n" : ", "));
+}
+
+/*
+   Write the high 32-bits of each value in table[0..k-1] to out, five per line
+   in hexadecimal separated by commas.
+ */
+local void write_table32hi(out, table, k)
+FILE *out;
+const z_word_t FAR *table;
+int k;
+{
+    int n;
+
+    for (n = 0; n < k; n++)
+        fprintf(out, "%s0x%08lx%s", n == 0 || n % 5 ? "" : "    ",
+                (unsigned long)(table[n] >> 32),
+                n == k - 1 ? "" : (n % 5 == 4 ? ",\n" : ", "));
+}
+
+/*
+  Write the 64-bit values in table[0..k-1] to out, three per line in
+  hexadecimal separated by commas. This assumes that if there is a 64-bit
+  type, then there is also a long long integer type, and it is at least 64
+  bits. If not, then the type cast and format string can be adjusted
+  accordingly.
+ */
+local void write_table64(out, table, k)
+    FILE *out;
+    const z_word_t FAR *table;
+    int k;
+{
+    int n;
+
+    for (n = 0; n < k; n++)
+        fprintf(out, "%s0x%016llx%s", n == 0 || n % 3 ? "" : "    ",
+                (unsigned long long)(table[n]),
+                n == k - 1 ? "" : (n % 3 == 2 ? ",\n" : ", "));
+}
+
+/* Actually do the deed. */
+int main()
+{
+    make_crc_table();
+    return 0;
+}
+
+#endif /* MAKECRCH */
+
+#ifdef W
+/*
+  Generate the little and big-endian braid tables for the given n and z_word_t
+  size w. Each array must have room for w blocks of 256 elements.
+ */
+local void braid(ltl, big, n, w)
+    z_crc_t ltl[][256];
+    z_word_t big[][256];
+    int n;
+    int w;
+{
+    int k;
+    z_crc_t i, p, q;
+    for (k = 0; k < w; k++) {
+        p = x2nmodp((n * w + 3 - k) << 3, 0);
+        ltl[k][0] = 0;
+        big[w - 1 - k][0] = 0;
+        for (i = 1; i < 256; i++) {
+            ltl[k][i] = q = multmodp(i << 24, p);
+            big[w - 1 - k][i] = byte_swap(q);
+        }
+    }
+}
+#endif
+
+#else /* !DYNAMIC_CRC_TABLE */
+/* ========================================================================
+ * Tables for byte-wise and braided CRC-32 calculations, and a table of powers
+ * of x for combining CRC-32s, all made by make_crc_table().
+ */
+#include "crc32.h"
+#endif /* DYNAMIC_CRC_TABLE */
+
+/* ========================================================================
+ * Routines used for CRC calculation. Some are also required for the table
+ * generation above.
+ */
+
+/*
+  Return a(x) multiplied by b(x) modulo p(x), where p(x) is the CRC polynomial,
+  reflected. For speed, this requires that a not be zero.
+ */
+local z_crc_t multmodp(a, b)
+    z_crc_t a;
+    z_crc_t b;
+{
+    z_crc_t m, p;
+
+    m = (z_crc_t)1 << 31;
+    p = 0;
+    for (;;) {
+        if (a & m) {
+            p ^= b;
+            if ((a & (m - 1)) == 0)
+                break;
+        }
+        m >>= 1;
+        b = b & 1 ? (b >> 1) ^ POLY : b >> 1;
+    }
+    return p;
+}
+
+/*
+  Return x^(n * 2^k) modulo p(x). Requires that x2n_table[] has been
+  initialized.
+ */
+local z_crc_t x2nmodp(n, k)
+    z_off64_t n;
+    unsigned k;
+{
+    z_crc_t p;
+
+    p = (z_crc_t)1 << 31;           /* x^0 == 1 */
+    while (n) {
+        if (n & 1)
+            p = multmodp(x2n_table[k & 31], p);
+        n >>= 1;
+        k++;
+    }
+    return p;
+}
+
+/* =========================================================================
+ * This function can be used by asm versions of crc32(), and to force the
+ * generation of the CRC tables in a threaded application.
+ */
+const z_crc_t FAR * ZEXPORT get_crc_table()
+{
+#ifdef DYNAMIC_CRC_TABLE
+    once(&made, make_crc_table);
+#endif /* DYNAMIC_CRC_TABLE */
+    return (const z_crc_t FAR *)crc_table;
+}
+
+/* =========================================================================
+ * Use ARM machine instructions if available. This will compute the CRC about
+ * ten times faster than the braided calculation. This code does not check for
+ * the presence of the CRC instruction at run time. __ARM_FEATURE_CRC32 will
+ * only be defined if the compilation specifies an ARM processor architecture
+ * that has the instructions. For example, compiling with -march=armv8.1-a or
+ * -march=armv8-a+crc, or -march=native if the compile machine has the crc32
+ * instructions.
+ */
+#ifdef ARMCRC32
+
+/*
+   Constants empirically determined to maximize speed. These values are from
+   measurements on a Cortex-A57. Your mileage may vary.
+ */
+#define Z_BATCH 3990                /* number of words in a batch */
+#define Z_BATCH_ZEROS 0xa10d3d0c    /* computed from Z_BATCH = 3990 */
+#define Z_BATCH_MIN 800             /* fewest words in a final batch */
+
+unsigned long ZEXPORT crc32_z(crc, buf, len)
+    unsigned long crc;
+    const unsigned char FAR *buf;
+    z_size_t len;
+{
+    z_crc_t val;
+    z_word_t crc1, crc2;
+    const z_word_t *word;
+    z_word_t val0, val1, val2;
+    z_size_t last, last2, i;
+    z_size_t num;
+
+    /* Return initial CRC, if requested. */
+    if (buf == Z_NULL) return 0;
+
+#ifdef DYNAMIC_CRC_TABLE
+    once(&made, make_crc_table);
+#endif /* DYNAMIC_CRC_TABLE */
+
+    /* Pre-condition the CRC */
+    crc = (~crc) & 0xffffffff;
+
+    /* Compute the CRC up to a word boundary. */
+    while (len && ((z_size_t)buf & 7) != 0) {
+        len--;
+        val = *buf++;
+        __asm__ volatile("crc32b %w0, %w0, %w1" : "+r"(crc) : "r"(val));
+    }
+
+    /* Prepare to compute the CRC on full 64-bit words word[0..num-1]. */
+    word = (z_word_t const *)buf;
+    num = len >> 3;
+    len &= 7;
+
+    /* Do three interleaved CRCs to realize the throughput of one crc32x
+       instruction per cycle. Each CRC is calculated on Z_BATCH words. The
+       three CRCs are combined into a single CRC after each set of batches. */
+    while (num >= 3 * Z_BATCH) {
+        crc1 = 0;
+        crc2 = 0;
+        for (i = 0; i < Z_BATCH; i++) {
+            val0 = word[i];
+            val1 = word[i + Z_BATCH];
+            val2 = word[i + 2 * Z_BATCH];
+            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc) : "r"(val0));
+            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc1) : "r"(val1));
+            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc2) : "r"(val2));
+        }
+        word += 3 * Z_BATCH;
+        num -= 3 * Z_BATCH;
+        crc = multmodp(Z_BATCH_ZEROS, crc) ^ crc1;
+        crc = multmodp(Z_BATCH_ZEROS, crc) ^ crc2;
+    }
+
+    /* Do one last smaller batch with the remaining words, if there are enough
+       to pay for the combination of CRCs. */
+    last = num / 3;
+    if (last >= Z_BATCH_MIN) {
+        last2 = last << 1;
+        crc1 = 0;
+        crc2 = 0;
+        for (i = 0; i < last; i++) {
+            val0 = word[i];
+            val1 = word[i + last];
+            val2 = word[i + last2];
+            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc) : "r"(val0));
+            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc1) : "r"(val1));
+            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc2) : "r"(val2));
+        }
+        word += 3 * last;
+        num -= 3 * last;
+        val = x2nmodp(last, 6);
+        crc = multmodp(val, crc) ^ crc1;
+        crc = multmodp(val, crc) ^ crc2;
+    }
+
+    /* Compute the CRC on any remaining words. */
+    for (i = 0; i < num; i++) {
+        val0 = word[i];
+        __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc) : "r"(val0));
+    }
+    word += num;
+
+    /* Complete the CRC on any remaining bytes. */
+    buf = (const unsigned char FAR *)word;
+    while (len) {
+        len--;
+        val = *buf++;
+        __asm__ volatile("crc32b %w0, %w0, %w1" : "+r"(crc) : "r"(val));
+    }
+
+    /* Return the CRC, post-conditioned. */
+    return crc ^ 0xffffffff;
+}
+
+#else
+
+#ifdef W
+
+/*
+  Return the CRC of the W bytes in the word_t data, taking the
+  least-significant byte of the word as the first byte of data, without any pre
+  or post conditioning. This is used to combine the CRCs of each braid.
+ */
+local z_crc_t crc_word(data)
+    z_word_t data;
+{
+    int k;
+    for (k = 0; k < W; k++)
+        data = (data >> 8) ^ crc_table[data & 0xff];
+    return (z_crc_t)data;
+}
+
+local z_word_t crc_word_big(data)
+    z_word_t data;
+{
+    int k;
+    for (k = 0; k < W; k++)
+        data = (data << 8) ^
+            crc_big_table[(data >> ((W - 1) << 3)) & 0xff];
+    return data;
+}
+
+#endif
+
+/* ========================================================================= */
+unsigned long ZEXPORT crc32_z(crc, buf, len)
+    unsigned long crc;
+    const unsigned char FAR *buf;
+    z_size_t len;
+{
+    /* Return initial CRC, if requested. */
+    if (buf == Z_NULL) return 0;
+
+#ifdef DYNAMIC_CRC_TABLE
+    once(&made, make_crc_table);
+#endif /* DYNAMIC_CRC_TABLE */
+
+    /* Pre-condition the CRC */
+    crc = (~crc) & 0xffffffff;
+
+#ifdef W
+
+    /* If provided enough bytes, do a braided CRC calculation. */
+    if (len >= N * W + W - 1) {
+        z_size_t blks;
+        z_word_t const *words;
+        unsigned endian;
+        int k;
+
+        /* Compute the CRC up to a z_word_t boundary. */
+        while (len && ((z_size_t)buf & (W - 1)) != 0) {
+            len--;
+            crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        }
+
+        /* Compute the CRC on as many N z_word_t blocks as are available. */
+        blks = len / (N * W);
+        len -= blks * N * W;
+        words = (z_word_t const *)buf;
+
+        /* Do endian check at execution time instead of compile time, since ARM
+           processors can change the endianess at execution time. If the
+           compiler knows what the endianess will be, it can optimize out the
+           check and the unused branch. */
+        endian = 1;
+        if (*(unsigned char *)&endian) {
+            /* Little endian. */
+
+            z_crc_t crc0;
+            z_word_t word0;
+#if N > 1
+            z_crc_t crc1;
+            z_word_t word1;
+#if N > 2
+            z_crc_t crc2;
+            z_word_t word2;
+#if N > 3
+            z_crc_t crc3;
+            z_word_t word3;
+#if N > 4
+            z_crc_t crc4;
+            z_word_t word4;
+#if N > 5
+            z_crc_t crc5;
+            z_word_t word5;
+#endif
+#endif
+#endif
+#endif
+#endif
+
+            /* Initialize the CRC for each braid. */
+            crc0 = crc;
+#if N > 1
+            crc1 = 0;
+#if N > 2
+            crc2 = 0;
+#if N > 3
+            crc3 = 0;
+#if N > 4
+            crc4 = 0;
+#if N > 5
+            crc5 = 0;
+#endif
+#endif
+#endif
+#endif
+#endif
+
+            /*
+              Process the first blks-1 blocks, computing the CRCs on each braid
+              independently.
+             */
+            while (--blks) {
+                /* Load the word for each braid into registers. */
+                word0 = crc0 ^ words[0];
+#if N > 1
+                word1 = crc1 ^ words[1];
+#if N > 2
+                word2 = crc2 ^ words[2];
+#if N > 3
+                word3 = crc3 ^ words[3];
+#if N > 4
+                word4 = crc4 ^ words[4];
+#if N > 5
+                word5 = crc5 ^ words[5];
+#endif
+#endif
+#endif
+#endif
+#endif
+                words += N;
+
+                /* Compute and update the CRC for each word. The loop should
+                   get unrolled. */
+                crc0 = crc_braid_table[0][word0 & 0xff];
+#if N > 1
+                crc1 = crc_braid_table[0][word1 & 0xff];
+#if N > 2
+                crc2 = crc_braid_table[0][word2 & 0xff];
+#if N > 3
+                crc3 = crc_braid_table[0][word3 & 0xff];
+#if N > 4
+                crc4 = crc_braid_table[0][word4 & 0xff];
+#if N > 5
+                crc5 = crc_braid_table[0][word5 & 0xff];
+#endif
+#endif
+#endif
+#endif
+#endif
+                for (k = 1; k < W; k++) {
+                    crc0 ^= crc_braid_table[k][(word0 >> (k << 3)) & 0xff];
+#if N > 1
+                    crc1 ^= crc_braid_table[k][(word1 >> (k << 3)) & 0xff];
+#if N > 2
+                    crc2 ^= crc_braid_table[k][(word2 >> (k << 3)) & 0xff];
+#if N > 3
+                    crc3 ^= crc_braid_table[k][(word3 >> (k << 3)) & 0xff];
+#if N > 4
+                    crc4 ^= crc_braid_table[k][(word4 >> (k << 3)) & 0xff];
+#if N > 5
+                    crc5 ^= crc_braid_table[k][(word5 >> (k << 3)) & 0xff];
+#endif
+#endif
+#endif
+#endif
+#endif
+                }
+            }
+
+            /*
+              Process the last block, combining the CRCs of the N braids at the
+              same time.
+             */
+            crc = crc_word(crc0 ^ words[0]);
+#if N > 1
+            crc = crc_word(crc1 ^ words[1] ^ crc);
+#if N > 2
+            crc = crc_word(crc2 ^ words[2] ^ crc);
+#if N > 3
+            crc = crc_word(crc3 ^ words[3] ^ crc);
+#if N > 4
+            crc = crc_word(crc4 ^ words[4] ^ crc);
+#if N > 5
+            crc = crc_word(crc5 ^ words[5] ^ crc);
+#endif
+#endif
+#endif
+#endif
+#endif
+            words += N;
+        }
+        else {
+            /* Big endian. */
+
+            z_word_t crc0, word0, comb;
+#if N > 1
+            z_word_t crc1, word1;
+#if N > 2
+            z_word_t crc2, word2;
+#if N > 3
+            z_word_t crc3, word3;
+#if N > 4
+            z_word_t crc4, word4;
+#if N > 5
+            z_word_t crc5, word5;
+#endif
+#endif
+#endif
+#endif
+#endif
+
+            /* Initialize the CRC for each braid. */
+            crc0 = byte_swap(crc);
+#if N > 1
+            crc1 = 0;
+#if N > 2
+            crc2 = 0;
+#if N > 3
+            crc3 = 0;
+#if N > 4
+            crc4 = 0;
+#if N > 5
+            crc5 = 0;
+#endif
+#endif
+#endif
+#endif
+#endif
+
+            /*
+              Process the first blks-1 blocks, computing the CRCs on each braid
+              independently.
+             */
+            while (--blks) {
+                /* Load the word for each braid into registers. */
+                word0 = crc0 ^ words[0];
+#if N > 1
+                word1 = crc1 ^ words[1];
+#if N > 2
+                word2 = crc2 ^ words[2];
+#if N > 3
+                word3 = crc3 ^ words[3];
+#if N > 4
+                word4 = crc4 ^ words[4];
+#if N > 5
+                word5 = crc5 ^ words[5];
+#endif
+#endif
+#endif
+#endif
+#endif
+                words += N;
+
+                /* Compute and update the CRC for each word. The loop should
+                   get unrolled. */
+                crc0 = crc_braid_big_table[0][word0 & 0xff];
+#if N > 1
+                crc1 = crc_braid_big_table[0][word1 & 0xff];
+#if N > 2
+                crc2 = crc_braid_big_table[0][word2 & 0xff];
+#if N > 3
+                crc3 = crc_braid_big_table[0][word3 & 0xff];
+#if N > 4
+                crc4 = crc_braid_big_table[0][word4 & 0xff];
+#if N > 5
+                crc5 = crc_braid_big_table[0][word5 & 0xff];
+#endif
+#endif
+#endif
+#endif
+#endif
+                for (k = 1; k < W; k++) {
+                    crc0 ^= crc_braid_big_table[k][(word0 >> (k << 3)) & 0xff];
+#if N > 1
+                    crc1 ^= crc_braid_big_table[k][(word1 >> (k << 3)) & 0xff];
+#if N > 2
+                    crc2 ^= crc_braid_big_table[k][(word2 >> (k << 3)) & 0xff];
+#if N > 3
+                    crc3 ^= crc_braid_big_table[k][(word3 >> (k << 3)) & 0xff];
+#if N > 4
+                    crc4 ^= crc_braid_big_table[k][(word4 >> (k << 3)) & 0xff];
+#if N > 5
+                    crc5 ^= crc_braid_big_table[k][(word5 >> (k << 3)) & 0xff];
+#endif
+#endif
+#endif
+#endif
+#endif
+                }
+            }
+
+            /*
+              Process the last block, combining the CRCs of the N braids at the
+              same time.
+             */
+            comb = crc_word_big(crc0 ^ words[0]);
+#if N > 1
+            comb = crc_word_big(crc1 ^ words[1] ^ comb);
+#if N > 2
+            comb = crc_word_big(crc2 ^ words[2] ^ comb);
+#if N > 3
+            comb = crc_word_big(crc3 ^ words[3] ^ comb);
+#if N > 4
+            comb = crc_word_big(crc4 ^ words[4] ^ comb);
+#if N > 5
+            comb = crc_word_big(crc5 ^ words[5] ^ comb);
+#endif
+#endif
+#endif
+#endif
+#endif
+            words += N;
+            crc = byte_swap(comb);
+        }
+
+        /*
+          Update the pointer to the remaining bytes to process.
+         */
+        buf = (unsigned char const *)words;
+    }
+
+#endif /* W */
+
+    /* Complete the computation of the CRC on any remaining bytes. */
+    while (len >= 8) {
+        len -= 8;
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+    }
+    while (len) {
+        len--;
+        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
+    }
+
+    /* Return the CRC, post-conditioned. */
+    return crc ^ 0xffffffff;
+}
+
+#endif
+
+/* ========================================================================= */
+unsigned long ZEXPORT crc32(crc, buf, len)
+    unsigned long crc;
+    const unsigned char FAR *buf;
+    uInt len;
+{
+    return crc32_z(crc, buf, len);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
+    uLong crc1;
+    uLong crc2;
+    z_off64_t len2;
+{
+#ifdef DYNAMIC_CRC_TABLE
+    once(&made, make_crc_table);
+#endif /* DYNAMIC_CRC_TABLE */
+    return multmodp(x2nmodp(len2, 3), crc1) ^ (crc2 & 0xffffffff);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT crc32_combine(crc1, crc2, len2)
+    uLong crc1;
+    uLong crc2;
+    z_off_t len2;
+{
+    return crc32_combine64(crc1, crc2, (z_off64_t)len2);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT crc32_combine_gen64(len2)
+    z_off64_t len2;
+{
+#ifdef DYNAMIC_CRC_TABLE
+    once(&made, make_crc_table);
+#endif /* DYNAMIC_CRC_TABLE */
+    return x2nmodp(len2, 3);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT crc32_combine_gen(len2)
+    z_off_t len2;
+{
+    return crc32_combine_gen64((z_off64_t)len2);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT crc32_combine_op(crc1, crc2, op)
+    uLong crc1;
+    uLong crc2;
+    uLong op;
+{
+    return multmodp(op, crc1) ^ (crc2 & 0xffffffff);
+}
diff --git a/lib/zlib/crc32.h b/lib/zlib/crc32.h
new file mode 100644
index 0000000..137df68
--- /dev/null
+++ b/lib/zlib/crc32.h
@@ -0,0 +1,9446 @@
+/* crc32.h -- tables for rapid CRC calculation
+ * Generated automatically by crc32.c
+ */
+
+local const z_crc_t FAR crc_table[] = {
+    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
+    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
+    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
+    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
+    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
+    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
+    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
+    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
+    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
+    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
+    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
+    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
+    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
+    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
+    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
+    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
+    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
+    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
+    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
+    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
+    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
+    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
+    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
+    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
+    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
+    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
+    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
+    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
+    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
+    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
+    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
+    0x2d02ef8d};
+
+#ifdef W
+
+#if W == 8
+
+local const z_word_t FAR crc_big_table[] = {
+    0x0000000000000000, 0x9630077700000000, 0x2c610eee00000000,
+    0xba51099900000000, 0x19c46d0700000000, 0x8ff46a7000000000,
+    0x35a563e900000000, 0xa395649e00000000, 0x3288db0e00000000,
+    0xa4b8dc7900000000, 0x1ee9d5e000000000, 0x88d9d29700000000,
+    0x2b4cb60900000000, 0xbd7cb17e00000000, 0x072db8e700000000,
+    0x911dbf9000000000, 0x6410b71d00000000, 0xf220b06a00000000,
+    0x4871b9f300000000, 0xde41be8400000000, 0x7dd4da1a00000000,
+    0xebe4dd6d00000000, 0x51b5d4f400000000, 0xc785d38300000000,
+    0x56986c1300000000, 0xc0a86b6400000000, 0x7af962fd00000000,
+    0xecc9658a00000000, 0x4f5c011400000000, 0xd96c066300000000,
+    0x633d0ffa00000000, 0xf50d088d00000000, 0xc8206e3b00000000,
+    0x5e10694c00000000, 0xe44160d500000000, 0x727167a200000000,
+    0xd1e4033c00000000, 0x47d4044b00000000, 0xfd850dd200000000,
+    0x6bb50aa500000000, 0xfaa8b53500000000, 0x6c98b24200000000,
+    0xd6c9bbdb00000000, 0x40f9bcac00000000, 0xe36cd83200000000,
+    0x755cdf4500000000, 0xcf0dd6dc00000000, 0x593dd1ab00000000,
+    0xac30d92600000000, 0x3a00de5100000000, 0x8051d7c800000000,
+    0x1661d0bf00000000, 0xb5f4b42100000000, 0x23c4b35600000000,
+    0x9995bacf00000000, 0x0fa5bdb800000000, 0x9eb8022800000000,
+    0x0888055f00000000, 0xb2d90cc600000000, 0x24e90bb100000000,
+    0x877c6f2f00000000, 0x114c685800000000, 0xab1d61c100000000,
+    0x3d2d66b600000000, 0x9041dc7600000000, 0x0671db0100000000,
+    0xbc20d29800000000, 0x2a10d5ef00000000, 0x8985b17100000000,
+    0x1fb5b60600000000, 0xa5e4bf9f00000000, 0x33d4b8e800000000,
+    0xa2c9077800000000, 0x34f9000f00000000, 0x8ea8099600000000,
+    0x18980ee100000000, 0xbb0d6a7f00000000, 0x2d3d6d0800000000,
+    0x976c649100000000, 0x015c63e600000000, 0xf4516b6b00000000,
+    0x62616c1c00000000, 0xd830658500000000, 0x4e0062f200000000,
+    0xed95066c00000000, 0x7ba5011b00000000, 0xc1f4088200000000,
+    0x57c40ff500000000, 0xc6d9b06500000000, 0x50e9b71200000000,
+    0xeab8be8b00000000, 0x7c88b9fc00000000, 0xdf1ddd6200000000,
+    0x492dda1500000000, 0xf37cd38c00000000, 0x654cd4fb00000000,
+    0x5861b24d00000000, 0xce51b53a00000000, 0x7400bca300000000,
+    0xe230bbd400000000, 0x41a5df4a00000000, 0xd795d83d00000000,
+    0x6dc4d1a400000000, 0xfbf4d6d300000000, 0x6ae9694300000000,
+    0xfcd96e3400000000, 0x468867ad00000000, 0xd0b860da00000000,
+    0x732d044400000000, 0xe51d033300000000, 0x5f4c0aaa00000000,
+    0xc97c0ddd00000000, 0x3c71055000000000, 0xaa41022700000000,
+    0x10100bbe00000000, 0x86200cc900000000, 0x25b5685700000000,
+    0xb3856f2000000000, 0x09d466b900000000, 0x9fe461ce00000000,
+    0x0ef9de5e00000000, 0x98c9d92900000000, 0x2298d0b000000000,
+    0xb4a8d7c700000000, 0x173db35900000000, 0x810db42e00000000,
+    0x3b5cbdb700000000, 0xad6cbac000000000, 0x2083b8ed00000000,
+    0xb6b3bf9a00000000, 0x0ce2b60300000000, 0x9ad2b17400000000,
+    0x3947d5ea00000000, 0xaf77d29d00000000, 0x1526db0400000000,
+    0x8316dc7300000000, 0x120b63e300000000, 0x843b649400000000,
+    0x3e6a6d0d00000000, 0xa85a6a7a00000000, 0x0bcf0ee400000000,
+    0x9dff099300000000, 0x27ae000a00000000, 0xb19e077d00000000,
+    0x44930ff000000000, 0xd2a3088700000000, 0x68f2011e00000000,
+    0xfec2066900000000, 0x5d5762f700000000, 0xcb67658000000000,
+    0x71366c1900000000, 0xe7066b6e00000000, 0x761bd4fe00000000,
+    0xe02bd38900000000, 0x5a7ada1000000000, 0xcc4add6700000000,
+    0x6fdfb9f900000000, 0xf9efbe8e00000000, 0x43beb71700000000,
+    0xd58eb06000000000, 0xe8a3d6d600000000, 0x7e93d1a100000000,
+    0xc4c2d83800000000, 0x52f2df4f00000000, 0xf167bbd100000000,
+    0x6757bca600000000, 0xdd06b53f00000000, 0x4b36b24800000000,
+    0xda2b0dd800000000, 0x4c1b0aaf00000000, 0xf64a033600000000,
+    0x607a044100000000, 0xc3ef60df00000000, 0x55df67a800000000,
+    0xef8e6e3100000000, 0x79be694600000000, 0x8cb361cb00000000,
+    0x1a8366bc00000000, 0xa0d26f2500000000, 0x36e2685200000000,
+    0x95770ccc00000000, 0x03470bbb00000000, 0xb916022200000000,
+    0x2f26055500000000, 0xbe3bbac500000000, 0x280bbdb200000000,
+    0x925ab42b00000000, 0x046ab35c00000000, 0xa7ffd7c200000000,
+    0x31cfd0b500000000, 0x8b9ed92c00000000, 0x1daede5b00000000,
+    0xb0c2649b00000000, 0x26f263ec00000000, 0x9ca36a7500000000,
+    0x0a936d0200000000, 0xa906099c00000000, 0x3f360eeb00000000,
+    0x8567077200000000, 0x1357000500000000, 0x824abf9500000000,
+    0x147ab8e200000000, 0xae2bb17b00000000, 0x381bb60c00000000,
+    0x9b8ed29200000000, 0x0dbed5e500000000, 0xb7efdc7c00000000,
+    0x21dfdb0b00000000, 0xd4d2d38600000000, 0x42e2d4f100000000,
+    0xf8b3dd6800000000, 0x6e83da1f00000000, 0xcd16be8100000000,
+    0x5b26b9f600000000, 0xe177b06f00000000, 0x7747b71800000000,
+    0xe65a088800000000, 0x706a0fff00000000, 0xca3b066600000000,
+    0x5c0b011100000000, 0xff9e658f00000000, 0x69ae62f800000000,
+    0xd3ff6b6100000000, 0x45cf6c1600000000, 0x78e20aa000000000,
+    0xeed20dd700000000, 0x5483044e00000000, 0xc2b3033900000000,
+    0x612667a700000000, 0xf71660d000000000, 0x4d47694900000000,
+    0xdb776e3e00000000, 0x4a6ad1ae00000000, 0xdc5ad6d900000000,
+    0x660bdf4000000000, 0xf03bd83700000000, 0x53aebca900000000,
+    0xc59ebbde00000000, 0x7fcfb24700000000, 0xe9ffb53000000000,
+    0x1cf2bdbd00000000, 0x8ac2baca00000000, 0x3093b35300000000,
+    0xa6a3b42400000000, 0x0536d0ba00000000, 0x9306d7cd00000000,
+    0x2957de5400000000, 0xbf67d92300000000, 0x2e7a66b300000000,
+    0xb84a61c400000000, 0x021b685d00000000, 0x942b6f2a00000000,
+    0x37be0bb400000000, 0xa18e0cc300000000, 0x1bdf055a00000000,
+    0x8def022d00000000};
+
+#else /* W == 4 */
+
+local const z_word_t FAR crc_big_table[] = {
+    0x00000000, 0x96300777, 0x2c610eee, 0xba510999, 0x19c46d07,
+    0x8ff46a70, 0x35a563e9, 0xa395649e, 0x3288db0e, 0xa4b8dc79,
+    0x1ee9d5e0, 0x88d9d297, 0x2b4cb609, 0xbd7cb17e, 0x072db8e7,
+    0x911dbf90, 0x6410b71d, 0xf220b06a, 0x4871b9f3, 0xde41be84,
+    0x7dd4da1a, 0xebe4dd6d, 0x51b5d4f4, 0xc785d383, 0x56986c13,
+    0xc0a86b64, 0x7af962fd, 0xecc9658a, 0x4f5c0114, 0xd96c0663,
+    0x633d0ffa, 0xf50d088d, 0xc8206e3b, 0x5e10694c, 0xe44160d5,
+    0x727167a2, 0xd1e4033c, 0x47d4044b, 0xfd850dd2, 0x6bb50aa5,
+    0xfaa8b535, 0x6c98b242, 0xd6c9bbdb, 0x40f9bcac, 0xe36cd832,
+    0x755cdf45, 0xcf0dd6dc, 0x593dd1ab, 0xac30d926, 0x3a00de51,
+    0x8051d7c8, 0x1661d0bf, 0xb5f4b421, 0x23c4b356, 0x9995bacf,
+    0x0fa5bdb8, 0x9eb80228, 0x0888055f, 0xb2d90cc6, 0x24e90bb1,
+    0x877c6f2f, 0x114c6858, 0xab1d61c1, 0x3d2d66b6, 0x9041dc76,
+    0x0671db01, 0xbc20d298, 0x2a10d5ef, 0x8985b171, 0x1fb5b606,
+    0xa5e4bf9f, 0x33d4b8e8, 0xa2c90778, 0x34f9000f, 0x8ea80996,
+    0x18980ee1, 0xbb0d6a7f, 0x2d3d6d08, 0x976c6491, 0x015c63e6,
+    0xf4516b6b, 0x62616c1c, 0xd8306585, 0x4e0062f2, 0xed95066c,
+    0x7ba5011b, 0xc1f40882, 0x57c40ff5, 0xc6d9b065, 0x50e9b712,
+    0xeab8be8b, 0x7c88b9fc, 0xdf1ddd62, 0x492dda15, 0xf37cd38c,
+    0x654cd4fb, 0x5861b24d, 0xce51b53a, 0x7400bca3, 0xe230bbd4,
+    0x41a5df4a, 0xd795d83d, 0x6dc4d1a4, 0xfbf4d6d3, 0x6ae96943,
+    0xfcd96e34, 0x468867ad, 0xd0b860da, 0x732d0444, 0xe51d0333,
+    0x5f4c0aaa, 0xc97c0ddd, 0x3c710550, 0xaa410227, 0x10100bbe,
+    0x86200cc9, 0x25b56857, 0xb3856f20, 0x09d466b9, 0x9fe461ce,
+    0x0ef9de5e, 0x98c9d929, 0x2298d0b0, 0xb4a8d7c7, 0x173db359,
+    0x810db42e, 0x3b5cbdb7, 0xad6cbac0, 0x2083b8ed, 0xb6b3bf9a,
+    0x0ce2b603, 0x9ad2b174, 0x3947d5ea, 0xaf77d29d, 0x1526db04,
+    0x8316dc73, 0x120b63e3, 0x843b6494, 0x3e6a6d0d, 0xa85a6a7a,
+    0x0bcf0ee4, 0x9dff0993, 0x27ae000a, 0xb19e077d, 0x44930ff0,
+    0xd2a30887, 0x68f2011e, 0xfec20669, 0x5d5762f7, 0xcb676580,
+    0x71366c19, 0xe7066b6e, 0x761bd4fe, 0xe02bd389, 0x5a7ada10,
+    0xcc4add67, 0x6fdfb9f9, 0xf9efbe8e, 0x43beb717, 0xd58eb060,
+    0xe8a3d6d6, 0x7e93d1a1, 0xc4c2d838, 0x52f2df4f, 0xf167bbd1,
+    0x6757bca6, 0xdd06b53f, 0x4b36b248, 0xda2b0dd8, 0x4c1b0aaf,
+    0xf64a0336, 0x607a0441, 0xc3ef60df, 0x55df67a8, 0xef8e6e31,
+    0x79be6946, 0x8cb361cb, 0x1a8366bc, 0xa0d26f25, 0x36e26852,
+    0x95770ccc, 0x03470bbb, 0xb9160222, 0x2f260555, 0xbe3bbac5,
+    0x280bbdb2, 0x925ab42b, 0x046ab35c, 0xa7ffd7c2, 0x31cfd0b5,
+    0x8b9ed92c, 0x1daede5b, 0xb0c2649b, 0x26f263ec, 0x9ca36a75,
+    0x0a936d02, 0xa906099c, 0x3f360eeb, 0x85670772, 0x13570005,
+    0x824abf95, 0x147ab8e2, 0xae2bb17b, 0x381bb60c, 0x9b8ed292,
+    0x0dbed5e5, 0xb7efdc7c, 0x21dfdb0b, 0xd4d2d386, 0x42e2d4f1,
+    0xf8b3dd68, 0x6e83da1f, 0xcd16be81, 0x5b26b9f6, 0xe177b06f,
+    0x7747b718, 0xe65a0888, 0x706a0fff, 0xca3b0666, 0x5c0b0111,
+    0xff9e658f, 0x69ae62f8, 0xd3ff6b61, 0x45cf6c16, 0x78e20aa0,
+    0xeed20dd7, 0x5483044e, 0xc2b30339, 0x612667a7, 0xf71660d0,
+    0x4d476949, 0xdb776e3e, 0x4a6ad1ae, 0xdc5ad6d9, 0x660bdf40,
+    0xf03bd837, 0x53aebca9, 0xc59ebbde, 0x7fcfb247, 0xe9ffb530,
+    0x1cf2bdbd, 0x8ac2baca, 0x3093b353, 0xa6a3b424, 0x0536d0ba,
+    0x9306d7cd, 0x2957de54, 0xbf67d923, 0x2e7a66b3, 0xb84a61c4,
+    0x021b685d, 0x942b6f2a, 0x37be0bb4, 0xa18e0cc3, 0x1bdf055a,
+    0x8def022d};
+
+#endif
+
+#if N == 1
+
+#if W == 8
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xccaa009e, 0x4225077d, 0x8e8f07e3, 0x844a0efa,
+    0x48e00e64, 0xc66f0987, 0x0ac50919, 0xd3e51bb5, 0x1f4f1b2b,
+    0x91c01cc8, 0x5d6a1c56, 0x57af154f, 0x9b0515d1, 0x158a1232,
+    0xd92012ac, 0x7cbb312b, 0xb01131b5, 0x3e9e3656, 0xf23436c8,
+    0xf8f13fd1, 0x345b3f4f, 0xbad438ac, 0x767e3832, 0xaf5e2a9e,
+    0x63f42a00, 0xed7b2de3, 0x21d12d7d, 0x2b142464, 0xe7be24fa,
+    0x69312319, 0xa59b2387, 0xf9766256, 0x35dc62c8, 0xbb53652b,
+    0x77f965b5, 0x7d3c6cac, 0xb1966c32, 0x3f196bd1, 0xf3b36b4f,
+    0x2a9379e3, 0xe639797d, 0x68b67e9e, 0xa41c7e00, 0xaed97719,
+    0x62737787, 0xecfc7064, 0x205670fa, 0x85cd537d, 0x496753e3,
+    0xc7e85400, 0x0b42549e, 0x01875d87, 0xcd2d5d19, 0x43a25afa,
+    0x8f085a64, 0x562848c8, 0x9a824856, 0x140d4fb5, 0xd8a74f2b,
+    0xd2624632, 0x1ec846ac, 0x9047414f, 0x5ced41d1, 0x299dc2ed,
+    0xe537c273, 0x6bb8c590, 0xa712c50e, 0xadd7cc17, 0x617dcc89,
+    0xeff2cb6a, 0x2358cbf4, 0xfa78d958, 0x36d2d9c6, 0xb85dde25,
+    0x74f7debb, 0x7e32d7a2, 0xb298d73c, 0x3c17d0df, 0xf0bdd041,
+    0x5526f3c6, 0x998cf358, 0x1703f4bb, 0xdba9f425, 0xd16cfd3c,
+    0x1dc6fda2, 0x9349fa41, 0x5fe3fadf, 0x86c3e873, 0x4a69e8ed,
+    0xc4e6ef0e, 0x084cef90, 0x0289e689, 0xce23e617, 0x40ace1f4,
+    0x8c06e16a, 0xd0eba0bb, 0x1c41a025, 0x92cea7c6, 0x5e64a758,
+    0x54a1ae41, 0x980baedf, 0x1684a93c, 0xda2ea9a2, 0x030ebb0e,
+    0xcfa4bb90, 0x412bbc73, 0x8d81bced, 0x8744b5f4, 0x4beeb56a,
+    0xc561b289, 0x09cbb217, 0xac509190, 0x60fa910e, 0xee7596ed,
+    0x22df9673, 0x281a9f6a, 0xe4b09ff4, 0x6a3f9817, 0xa6959889,
+    0x7fb58a25, 0xb31f8abb, 0x3d908d58, 0xf13a8dc6, 0xfbff84df,
+    0x37558441, 0xb9da83a2, 0x7570833c, 0x533b85da, 0x9f918544,
+    0x111e82a7, 0xddb48239, 0xd7718b20, 0x1bdb8bbe, 0x95548c5d,
+    0x59fe8cc3, 0x80de9e6f, 0x4c749ef1, 0xc2fb9912, 0x0e51998c,
+    0x04949095, 0xc83e900b, 0x46b197e8, 0x8a1b9776, 0x2f80b4f1,
+    0xe32ab46f, 0x6da5b38c, 0xa10fb312, 0xabcaba0b, 0x6760ba95,
+    0xe9efbd76, 0x2545bde8, 0xfc65af44, 0x30cfafda, 0xbe40a839,
+    0x72eaa8a7, 0x782fa1be, 0xb485a120, 0x3a0aa6c3, 0xf6a0a65d,
+    0xaa4de78c, 0x66e7e712, 0xe868e0f1, 0x24c2e06f, 0x2e07e976,
+    0xe2ade9e8, 0x6c22ee0b, 0xa088ee95, 0x79a8fc39, 0xb502fca7,
+    0x3b8dfb44, 0xf727fbda, 0xfde2f2c3, 0x3148f25d, 0xbfc7f5be,
+    0x736df520, 0xd6f6d6a7, 0x1a5cd639, 0x94d3d1da, 0x5879d144,
+    0x52bcd85d, 0x9e16d8c3, 0x1099df20, 0xdc33dfbe, 0x0513cd12,
+    0xc9b9cd8c, 0x4736ca6f, 0x8b9ccaf1, 0x8159c3e8, 0x4df3c376,
+    0xc37cc495, 0x0fd6c40b, 0x7aa64737, 0xb60c47a9, 0x3883404a,
+    0xf42940d4, 0xfeec49cd, 0x32464953, 0xbcc94eb0, 0x70634e2e,
+    0xa9435c82, 0x65e95c1c, 0xeb665bff, 0x27cc5b61, 0x2d095278,
+    0xe1a352e6, 0x6f2c5505, 0xa386559b, 0x061d761c, 0xcab77682,
+    0x44387161, 0x889271ff, 0x825778e6, 0x4efd7878, 0xc0727f9b,
+    0x0cd87f05, 0xd5f86da9, 0x19526d37, 0x97dd6ad4, 0x5b776a4a,
+    0x51b26353, 0x9d1863cd, 0x1397642e, 0xdf3d64b0, 0x83d02561,
+    0x4f7a25ff, 0xc1f5221c, 0x0d5f2282, 0x079a2b9b, 0xcb302b05,
+    0x45bf2ce6, 0x89152c78, 0x50353ed4, 0x9c9f3e4a, 0x121039a9,
+    0xdeba3937, 0xd47f302e, 0x18d530b0, 0x965a3753, 0x5af037cd,
+    0xff6b144a, 0x33c114d4, 0xbd4e1337, 0x71e413a9, 0x7b211ab0,
+    0xb78b1a2e, 0x39041dcd, 0xf5ae1d53, 0x2c8e0fff, 0xe0240f61,
+    0x6eab0882, 0xa201081c, 0xa8c40105, 0x646e019b, 0xeae10678,
+    0x264b06e6},
+   {0x00000000, 0xa6770bb4, 0x979f1129, 0x31e81a9d, 0xf44f2413,
+    0x52382fa7, 0x63d0353a, 0xc5a73e8e, 0x33ef4e67, 0x959845d3,
+    0xa4705f4e, 0x020754fa, 0xc7a06a74, 0x61d761c0, 0x503f7b5d,
+    0xf64870e9, 0x67de9cce, 0xc1a9977a, 0xf0418de7, 0x56368653,
+    0x9391b8dd, 0x35e6b369, 0x040ea9f4, 0xa279a240, 0x5431d2a9,
+    0xf246d91d, 0xc3aec380, 0x65d9c834, 0xa07ef6ba, 0x0609fd0e,
+    0x37e1e793, 0x9196ec27, 0xcfbd399c, 0x69ca3228, 0x582228b5,
+    0xfe552301, 0x3bf21d8f, 0x9d85163b, 0xac6d0ca6, 0x0a1a0712,
+    0xfc5277fb, 0x5a257c4f, 0x6bcd66d2, 0xcdba6d66, 0x081d53e8,
+    0xae6a585c, 0x9f8242c1, 0x39f54975, 0xa863a552, 0x0e14aee6,
+    0x3ffcb47b, 0x998bbfcf, 0x5c2c8141, 0xfa5b8af5, 0xcbb39068,
+    0x6dc49bdc, 0x9b8ceb35, 0x3dfbe081, 0x0c13fa1c, 0xaa64f1a8,
+    0x6fc3cf26, 0xc9b4c492, 0xf85cde0f, 0x5e2bd5bb, 0x440b7579,
+    0xe27c7ecd, 0xd3946450, 0x75e36fe4, 0xb044516a, 0x16335ade,
+    0x27db4043, 0x81ac4bf7, 0x77e43b1e, 0xd19330aa, 0xe07b2a37,
+    0x460c2183, 0x83ab1f0d, 0x25dc14b9, 0x14340e24, 0xb2430590,
+    0x23d5e9b7, 0x85a2e203, 0xb44af89e, 0x123df32a, 0xd79acda4,
+    0x71edc610, 0x4005dc8d, 0xe672d739, 0x103aa7d0, 0xb64dac64,
+    0x87a5b6f9, 0x21d2bd4d, 0xe47583c3, 0x42028877, 0x73ea92ea,
+    0xd59d995e, 0x8bb64ce5, 0x2dc14751, 0x1c295dcc, 0xba5e5678,
+    0x7ff968f6, 0xd98e6342, 0xe86679df, 0x4e11726b, 0xb8590282,
+    0x1e2e0936, 0x2fc613ab, 0x89b1181f, 0x4c162691, 0xea612d25,
+    0xdb8937b8, 0x7dfe3c0c, 0xec68d02b, 0x4a1fdb9f, 0x7bf7c102,
+    0xdd80cab6, 0x1827f438, 0xbe50ff8c, 0x8fb8e511, 0x29cfeea5,
+    0xdf879e4c, 0x79f095f8, 0x48188f65, 0xee6f84d1, 0x2bc8ba5f,
+    0x8dbfb1eb, 0xbc57ab76, 0x1a20a0c2, 0x8816eaf2, 0x2e61e146,
+    0x1f89fbdb, 0xb9fef06f, 0x7c59cee1, 0xda2ec555, 0xebc6dfc8,
+    0x4db1d47c, 0xbbf9a495, 0x1d8eaf21, 0x2c66b5bc, 0x8a11be08,
+    0x4fb68086, 0xe9c18b32, 0xd82991af, 0x7e5e9a1b, 0xefc8763c,
+    0x49bf7d88, 0x78576715, 0xde206ca1, 0x1b87522f, 0xbdf0599b,
+    0x8c184306, 0x2a6f48b2, 0xdc27385b, 0x7a5033ef, 0x4bb82972,
+    0xedcf22c6, 0x28681c48, 0x8e1f17fc, 0xbff70d61, 0x198006d5,
+    0x47abd36e, 0xe1dcd8da, 0xd034c247, 0x7643c9f3, 0xb3e4f77d,
+    0x1593fcc9, 0x247be654, 0x820cede0, 0x74449d09, 0xd23396bd,
+    0xe3db8c20, 0x45ac8794, 0x800bb91a, 0x267cb2ae, 0x1794a833,
+    0xb1e3a387, 0x20754fa0, 0x86024414, 0xb7ea5e89, 0x119d553d,
+    0xd43a6bb3, 0x724d6007, 0x43a57a9a, 0xe5d2712e, 0x139a01c7,
+    0xb5ed0a73, 0x840510ee, 0x22721b5a, 0xe7d525d4, 0x41a22e60,
+    0x704a34fd, 0xd63d3f49, 0xcc1d9f8b, 0x6a6a943f, 0x5b828ea2,
+    0xfdf58516, 0x3852bb98, 0x9e25b02c, 0xafcdaab1, 0x09baa105,
+    0xfff2d1ec, 0x5985da58, 0x686dc0c5, 0xce1acb71, 0x0bbdf5ff,
+    0xadcafe4b, 0x9c22e4d6, 0x3a55ef62, 0xabc30345, 0x0db408f1,
+    0x3c5c126c, 0x9a2b19d8, 0x5f8c2756, 0xf9fb2ce2, 0xc813367f,
+    0x6e643dcb, 0x982c4d22, 0x3e5b4696, 0x0fb35c0b, 0xa9c457bf,
+    0x6c636931, 0xca146285, 0xfbfc7818, 0x5d8b73ac, 0x03a0a617,
+    0xa5d7ada3, 0x943fb73e, 0x3248bc8a, 0xf7ef8204, 0x519889b0,
+    0x6070932d, 0xc6079899, 0x304fe870, 0x9638e3c4, 0xa7d0f959,
+    0x01a7f2ed, 0xc400cc63, 0x6277c7d7, 0x539fdd4a, 0xf5e8d6fe,
+    0x647e3ad9, 0xc209316d, 0xf3e12bf0, 0x55962044, 0x90311eca,
+    0x3646157e, 0x07ae0fe3, 0xa1d90457, 0x579174be, 0xf1e67f0a,
+    0xc00e6597, 0x66796e23, 0xa3de50ad, 0x05a95b19, 0x34414184,
+    0x92364a30},
+   {0x00000000, 0xcb5cd3a5, 0x4dc8a10b, 0x869472ae, 0x9b914216,
+    0x50cd91b3, 0xd659e31d, 0x1d0530b8, 0xec53826d, 0x270f51c8,
+    0xa19b2366, 0x6ac7f0c3, 0x77c2c07b, 0xbc9e13de, 0x3a0a6170,
+    0xf156b2d5, 0x03d6029b, 0xc88ad13e, 0x4e1ea390, 0x85427035,
+    0x9847408d, 0x531b9328, 0xd58fe186, 0x1ed33223, 0xef8580f6,
+    0x24d95353, 0xa24d21fd, 0x6911f258, 0x7414c2e0, 0xbf481145,
+    0x39dc63eb, 0xf280b04e, 0x07ac0536, 0xccf0d693, 0x4a64a43d,
+    0x81387798, 0x9c3d4720, 0x57619485, 0xd1f5e62b, 0x1aa9358e,
+    0xebff875b, 0x20a354fe, 0xa6372650, 0x6d6bf5f5, 0x706ec54d,
+    0xbb3216e8, 0x3da66446, 0xf6fab7e3, 0x047a07ad, 0xcf26d408,
+    0x49b2a6a6, 0x82ee7503, 0x9feb45bb, 0x54b7961e, 0xd223e4b0,
+    0x197f3715, 0xe82985c0, 0x23755665, 0xa5e124cb, 0x6ebdf76e,
+    0x73b8c7d6, 0xb8e41473, 0x3e7066dd, 0xf52cb578, 0x0f580a6c,
+    0xc404d9c9, 0x4290ab67, 0x89cc78c2, 0x94c9487a, 0x5f959bdf,
+    0xd901e971, 0x125d3ad4, 0xe30b8801, 0x28575ba4, 0xaec3290a,
+    0x659ffaaf, 0x789aca17, 0xb3c619b2, 0x35526b1c, 0xfe0eb8b9,
+    0x0c8e08f7, 0xc7d2db52, 0x4146a9fc, 0x8a1a7a59, 0x971f4ae1,
+    0x5c439944, 0xdad7ebea, 0x118b384f, 0xe0dd8a9a, 0x2b81593f,
+    0xad152b91, 0x6649f834, 0x7b4cc88c, 0xb0101b29, 0x36846987,
+    0xfdd8ba22, 0x08f40f5a, 0xc3a8dcff, 0x453cae51, 0x8e607df4,
+    0x93654d4c, 0x58399ee9, 0xdeadec47, 0x15f13fe2, 0xe4a78d37,
+    0x2ffb5e92, 0xa96f2c3c, 0x6233ff99, 0x7f36cf21, 0xb46a1c84,
+    0x32fe6e2a, 0xf9a2bd8f, 0x0b220dc1, 0xc07ede64, 0x46eaacca,
+    0x8db67f6f, 0x90b34fd7, 0x5bef9c72, 0xdd7beedc, 0x16273d79,
+    0xe7718fac, 0x2c2d5c09, 0xaab92ea7, 0x61e5fd02, 0x7ce0cdba,
+    0xb7bc1e1f, 0x31286cb1, 0xfa74bf14, 0x1eb014d8, 0xd5ecc77d,
+    0x5378b5d3, 0x98246676, 0x852156ce, 0x4e7d856b, 0xc8e9f7c5,
+    0x03b52460, 0xf2e396b5, 0x39bf4510, 0xbf2b37be, 0x7477e41b,
+    0x6972d4a3, 0xa22e0706, 0x24ba75a8, 0xefe6a60d, 0x1d661643,
+    0xd63ac5e6, 0x50aeb748, 0x9bf264ed, 0x86f75455, 0x4dab87f0,
+    0xcb3ff55e, 0x006326fb, 0xf135942e, 0x3a69478b, 0xbcfd3525,
+    0x77a1e680, 0x6aa4d638, 0xa1f8059d, 0x276c7733, 0xec30a496,
+    0x191c11ee, 0xd240c24b, 0x54d4b0e5, 0x9f886340, 0x828d53f8,
+    0x49d1805d, 0xcf45f2f3, 0x04192156, 0xf54f9383, 0x3e134026,
+    0xb8873288, 0x73dbe12d, 0x6eded195, 0xa5820230, 0x2316709e,
+    0xe84aa33b, 0x1aca1375, 0xd196c0d0, 0x5702b27e, 0x9c5e61db,
+    0x815b5163, 0x4a0782c6, 0xcc93f068, 0x07cf23cd, 0xf6999118,
+    0x3dc542bd, 0xbb513013, 0x700de3b6, 0x6d08d30e, 0xa65400ab,
+    0x20c07205, 0xeb9ca1a0, 0x11e81eb4, 0xdab4cd11, 0x5c20bfbf,
+    0x977c6c1a, 0x8a795ca2, 0x41258f07, 0xc7b1fda9, 0x0ced2e0c,
+    0xfdbb9cd9, 0x36e74f7c, 0xb0733dd2, 0x7b2fee77, 0x662adecf,
+    0xad760d6a, 0x2be27fc4, 0xe0beac61, 0x123e1c2f, 0xd962cf8a,
+    0x5ff6bd24, 0x94aa6e81, 0x89af5e39, 0x42f38d9c, 0xc467ff32,
+    0x0f3b2c97, 0xfe6d9e42, 0x35314de7, 0xb3a53f49, 0x78f9ecec,
+    0x65fcdc54, 0xaea00ff1, 0x28347d5f, 0xe368aefa, 0x16441b82,
+    0xdd18c827, 0x5b8cba89, 0x90d0692c, 0x8dd55994, 0x46898a31,
+    0xc01df89f, 0x0b412b3a, 0xfa1799ef, 0x314b4a4a, 0xb7df38e4,
+    0x7c83eb41, 0x6186dbf9, 0xaada085c, 0x2c4e7af2, 0xe712a957,
+    0x15921919, 0xdececabc, 0x585ab812, 0x93066bb7, 0x8e035b0f,
+    0x455f88aa, 0xc3cbfa04, 0x089729a1, 0xf9c19b74, 0x329d48d1,
+    0xb4093a7f, 0x7f55e9da, 0x6250d962, 0xa90c0ac7, 0x2f987869,
+    0xe4c4abcc},
+   {0x00000000, 0x3d6029b0, 0x7ac05360, 0x47a07ad0, 0xf580a6c0,
+    0xc8e08f70, 0x8f40f5a0, 0xb220dc10, 0x30704bc1, 0x0d106271,
+    0x4ab018a1, 0x77d03111, 0xc5f0ed01, 0xf890c4b1, 0xbf30be61,
+    0x825097d1, 0x60e09782, 0x5d80be32, 0x1a20c4e2, 0x2740ed52,
+    0x95603142, 0xa80018f2, 0xefa06222, 0xd2c04b92, 0x5090dc43,
+    0x6df0f5f3, 0x2a508f23, 0x1730a693, 0xa5107a83, 0x98705333,
+    0xdfd029e3, 0xe2b00053, 0xc1c12f04, 0xfca106b4, 0xbb017c64,
+    0x866155d4, 0x344189c4, 0x0921a074, 0x4e81daa4, 0x73e1f314,
+    0xf1b164c5, 0xccd14d75, 0x8b7137a5, 0xb6111e15, 0x0431c205,
+    0x3951ebb5, 0x7ef19165, 0x4391b8d5, 0xa121b886, 0x9c419136,
+    0xdbe1ebe6, 0xe681c256, 0x54a11e46, 0x69c137f6, 0x2e614d26,
+    0x13016496, 0x9151f347, 0xac31daf7, 0xeb91a027, 0xd6f18997,
+    0x64d15587, 0x59b17c37, 0x1e1106e7, 0x23712f57, 0x58f35849,
+    0x659371f9, 0x22330b29, 0x1f532299, 0xad73fe89, 0x9013d739,
+    0xd7b3ade9, 0xead38459, 0x68831388, 0x55e33a38, 0x124340e8,
+    0x2f236958, 0x9d03b548, 0xa0639cf8, 0xe7c3e628, 0xdaa3cf98,
+    0x3813cfcb, 0x0573e67b, 0x42d39cab, 0x7fb3b51b, 0xcd93690b,
+    0xf0f340bb, 0xb7533a6b, 0x8a3313db, 0x0863840a, 0x3503adba,
+    0x72a3d76a, 0x4fc3feda, 0xfde322ca, 0xc0830b7a, 0x872371aa,
+    0xba43581a, 0x9932774d, 0xa4525efd, 0xe3f2242d, 0xde920d9d,
+    0x6cb2d18d, 0x51d2f83d, 0x167282ed, 0x2b12ab5d, 0xa9423c8c,
+    0x9422153c, 0xd3826fec, 0xeee2465c, 0x5cc29a4c, 0x61a2b3fc,
+    0x2602c92c, 0x1b62e09c, 0xf9d2e0cf, 0xc4b2c97f, 0x8312b3af,
+    0xbe729a1f, 0x0c52460f, 0x31326fbf, 0x7692156f, 0x4bf23cdf,
+    0xc9a2ab0e, 0xf4c282be, 0xb362f86e, 0x8e02d1de, 0x3c220dce,
+    0x0142247e, 0x46e25eae, 0x7b82771e, 0xb1e6b092, 0x8c869922,
+    0xcb26e3f2, 0xf646ca42, 0x44661652, 0x79063fe2, 0x3ea64532,
+    0x03c66c82, 0x8196fb53, 0xbcf6d2e3, 0xfb56a833, 0xc6368183,
+    0x74165d93, 0x49767423, 0x0ed60ef3, 0x33b62743, 0xd1062710,
+    0xec660ea0, 0xabc67470, 0x96a65dc0, 0x248681d0, 0x19e6a860,
+    0x5e46d2b0, 0x6326fb00, 0xe1766cd1, 0xdc164561, 0x9bb63fb1,
+    0xa6d61601, 0x14f6ca11, 0x2996e3a1, 0x6e369971, 0x5356b0c1,
+    0x70279f96, 0x4d47b626, 0x0ae7ccf6, 0x3787e546, 0x85a73956,
+    0xb8c710e6, 0xff676a36, 0xc2074386, 0x4057d457, 0x7d37fde7,
+    0x3a978737, 0x07f7ae87, 0xb5d77297, 0x88b75b27, 0xcf1721f7,
+    0xf2770847, 0x10c70814, 0x2da721a4, 0x6a075b74, 0x576772c4,
+    0xe547aed4, 0xd8278764, 0x9f87fdb4, 0xa2e7d404, 0x20b743d5,
+    0x1dd76a65, 0x5a7710b5, 0x67173905, 0xd537e515, 0xe857cca5,
+    0xaff7b675, 0x92979fc5, 0xe915e8db, 0xd475c16b, 0x93d5bbbb,
+    0xaeb5920b, 0x1c954e1b, 0x21f567ab, 0x66551d7b, 0x5b3534cb,
+    0xd965a31a, 0xe4058aaa, 0xa3a5f07a, 0x9ec5d9ca, 0x2ce505da,
+    0x11852c6a, 0x562556ba, 0x6b457f0a, 0x89f57f59, 0xb49556e9,
+    0xf3352c39, 0xce550589, 0x7c75d999, 0x4115f029, 0x06b58af9,
+    0x3bd5a349, 0xb9853498, 0x84e51d28, 0xc34567f8, 0xfe254e48,
+    0x4c059258, 0x7165bbe8, 0x36c5c138, 0x0ba5e888, 0x28d4c7df,
+    0x15b4ee6f, 0x521494bf, 0x6f74bd0f, 0xdd54611f, 0xe03448af,
+    0xa794327f, 0x9af41bcf, 0x18a48c1e, 0x25c4a5ae, 0x6264df7e,
+    0x5f04f6ce, 0xed242ade, 0xd044036e, 0x97e479be, 0xaa84500e,
+    0x4834505d, 0x755479ed, 0x32f4033d, 0x0f942a8d, 0xbdb4f69d,
+    0x80d4df2d, 0xc774a5fd, 0xfa148c4d, 0x78441b9c, 0x4524322c,
+    0x028448fc, 0x3fe4614c, 0x8dc4bd5c, 0xb0a494ec, 0xf704ee3c,
+    0xca64c78c},
+   {0x00000000, 0xb8bc6765, 0xaa09c88b, 0x12b5afee, 0x8f629757,
+    0x37def032, 0x256b5fdc, 0x9dd738b9, 0xc5b428ef, 0x7d084f8a,
+    0x6fbde064, 0xd7018701, 0x4ad6bfb8, 0xf26ad8dd, 0xe0df7733,
+    0x58631056, 0x5019579f, 0xe8a530fa, 0xfa109f14, 0x42acf871,
+    0xdf7bc0c8, 0x67c7a7ad, 0x75720843, 0xcdce6f26, 0x95ad7f70,
+    0x2d111815, 0x3fa4b7fb, 0x8718d09e, 0x1acfe827, 0xa2738f42,
+    0xb0c620ac, 0x087a47c9, 0xa032af3e, 0x188ec85b, 0x0a3b67b5,
+    0xb28700d0, 0x2f503869, 0x97ec5f0c, 0x8559f0e2, 0x3de59787,
+    0x658687d1, 0xdd3ae0b4, 0xcf8f4f5a, 0x7733283f, 0xeae41086,
+    0x525877e3, 0x40edd80d, 0xf851bf68, 0xf02bf8a1, 0x48979fc4,
+    0x5a22302a, 0xe29e574f, 0x7f496ff6, 0xc7f50893, 0xd540a77d,
+    0x6dfcc018, 0x359fd04e, 0x8d23b72b, 0x9f9618c5, 0x272a7fa0,
+    0xbafd4719, 0x0241207c, 0x10f48f92, 0xa848e8f7, 0x9b14583d,
+    0x23a83f58, 0x311d90b6, 0x89a1f7d3, 0x1476cf6a, 0xaccaa80f,
+    0xbe7f07e1, 0x06c36084, 0x5ea070d2, 0xe61c17b7, 0xf4a9b859,
+    0x4c15df3c, 0xd1c2e785, 0x697e80e0, 0x7bcb2f0e, 0xc377486b,
+    0xcb0d0fa2, 0x73b168c7, 0x6104c729, 0xd9b8a04c, 0x446f98f5,
+    0xfcd3ff90, 0xee66507e, 0x56da371b, 0x0eb9274d, 0xb6054028,
+    0xa4b0efc6, 0x1c0c88a3, 0x81dbb01a, 0x3967d77f, 0x2bd27891,
+    0x936e1ff4, 0x3b26f703, 0x839a9066, 0x912f3f88, 0x299358ed,
+    0xb4446054, 0x0cf80731, 0x1e4da8df, 0xa6f1cfba, 0xfe92dfec,
+    0x462eb889, 0x549b1767, 0xec277002, 0x71f048bb, 0xc94c2fde,
+    0xdbf98030, 0x6345e755, 0x6b3fa09c, 0xd383c7f9, 0xc1366817,
+    0x798a0f72, 0xe45d37cb, 0x5ce150ae, 0x4e54ff40, 0xf6e89825,
+    0xae8b8873, 0x1637ef16, 0x048240f8, 0xbc3e279d, 0x21e91f24,
+    0x99557841, 0x8be0d7af, 0x335cb0ca, 0xed59b63b, 0x55e5d15e,
+    0x47507eb0, 0xffec19d5, 0x623b216c, 0xda874609, 0xc832e9e7,
+    0x708e8e82, 0x28ed9ed4, 0x9051f9b1, 0x82e4565f, 0x3a58313a,
+    0xa78f0983, 0x1f336ee6, 0x0d86c108, 0xb53aa66d, 0xbd40e1a4,
+    0x05fc86c1, 0x1749292f, 0xaff54e4a, 0x322276f3, 0x8a9e1196,
+    0x982bbe78, 0x2097d91d, 0x78f4c94b, 0xc048ae2e, 0xd2fd01c0,
+    0x6a4166a5, 0xf7965e1c, 0x4f2a3979, 0x5d9f9697, 0xe523f1f2,
+    0x4d6b1905, 0xf5d77e60, 0xe762d18e, 0x5fdeb6eb, 0xc2098e52,
+    0x7ab5e937, 0x680046d9, 0xd0bc21bc, 0x88df31ea, 0x3063568f,
+    0x22d6f961, 0x9a6a9e04, 0x07bda6bd, 0xbf01c1d8, 0xadb46e36,
+    0x15080953, 0x1d724e9a, 0xa5ce29ff, 0xb77b8611, 0x0fc7e174,
+    0x9210d9cd, 0x2aacbea8, 0x38191146, 0x80a57623, 0xd8c66675,
+    0x607a0110, 0x72cfaefe, 0xca73c99b, 0x57a4f122, 0xef189647,
+    0xfdad39a9, 0x45115ecc, 0x764dee06, 0xcef18963, 0xdc44268d,
+    0x64f841e8, 0xf92f7951, 0x41931e34, 0x5326b1da, 0xeb9ad6bf,
+    0xb3f9c6e9, 0x0b45a18c, 0x19f00e62, 0xa14c6907, 0x3c9b51be,
+    0x842736db, 0x96929935, 0x2e2efe50, 0x2654b999, 0x9ee8defc,
+    0x8c5d7112, 0x34e11677, 0xa9362ece, 0x118a49ab, 0x033fe645,
+    0xbb838120, 0xe3e09176, 0x5b5cf613, 0x49e959fd, 0xf1553e98,
+    0x6c820621, 0xd43e6144, 0xc68bceaa, 0x7e37a9cf, 0xd67f4138,
+    0x6ec3265d, 0x7c7689b3, 0xc4caeed6, 0x591dd66f, 0xe1a1b10a,
+    0xf3141ee4, 0x4ba87981, 0x13cb69d7, 0xab770eb2, 0xb9c2a15c,
+    0x017ec639, 0x9ca9fe80, 0x241599e5, 0x36a0360b, 0x8e1c516e,
+    0x866616a7, 0x3eda71c2, 0x2c6fde2c, 0x94d3b949, 0x090481f0,
+    0xb1b8e695, 0xa30d497b, 0x1bb12e1e, 0x43d23e48, 0xfb6e592d,
+    0xe9dbf6c3, 0x516791a6, 0xccb0a91f, 0x740cce7a, 0x66b96194,
+    0xde0506f1},
+   {0x00000000, 0x01c26a37, 0x0384d46e, 0x0246be59, 0x0709a8dc,
+    0x06cbc2eb, 0x048d7cb2, 0x054f1685, 0x0e1351b8, 0x0fd13b8f,
+    0x0d9785d6, 0x0c55efe1, 0x091af964, 0x08d89353, 0x0a9e2d0a,
+    0x0b5c473d, 0x1c26a370, 0x1de4c947, 0x1fa2771e, 0x1e601d29,
+    0x1b2f0bac, 0x1aed619b, 0x18abdfc2, 0x1969b5f5, 0x1235f2c8,
+    0x13f798ff, 0x11b126a6, 0x10734c91, 0x153c5a14, 0x14fe3023,
+    0x16b88e7a, 0x177ae44d, 0x384d46e0, 0x398f2cd7, 0x3bc9928e,
+    0x3a0bf8b9, 0x3f44ee3c, 0x3e86840b, 0x3cc03a52, 0x3d025065,
+    0x365e1758, 0x379c7d6f, 0x35dac336, 0x3418a901, 0x3157bf84,
+    0x3095d5b3, 0x32d36bea, 0x331101dd, 0x246be590, 0x25a98fa7,
+    0x27ef31fe, 0x262d5bc9, 0x23624d4c, 0x22a0277b, 0x20e69922,
+    0x2124f315, 0x2a78b428, 0x2bbade1f, 0x29fc6046, 0x283e0a71,
+    0x2d711cf4, 0x2cb376c3, 0x2ef5c89a, 0x2f37a2ad, 0x709a8dc0,
+    0x7158e7f7, 0x731e59ae, 0x72dc3399, 0x7793251c, 0x76514f2b,
+    0x7417f172, 0x75d59b45, 0x7e89dc78, 0x7f4bb64f, 0x7d0d0816,
+    0x7ccf6221, 0x798074a4, 0x78421e93, 0x7a04a0ca, 0x7bc6cafd,
+    0x6cbc2eb0, 0x6d7e4487, 0x6f38fade, 0x6efa90e9, 0x6bb5866c,
+    0x6a77ec5b, 0x68315202, 0x69f33835, 0x62af7f08, 0x636d153f,
+    0x612bab66, 0x60e9c151, 0x65a6d7d4, 0x6464bde3, 0x662203ba,
+    0x67e0698d, 0x48d7cb20, 0x4915a117, 0x4b531f4e, 0x4a917579,
+    0x4fde63fc, 0x4e1c09cb, 0x4c5ab792, 0x4d98dda5, 0x46c49a98,
+    0x4706f0af, 0x45404ef6, 0x448224c1, 0x41cd3244, 0x400f5873,
+    0x4249e62a, 0x438b8c1d, 0x54f16850, 0x55330267, 0x5775bc3e,
+    0x56b7d609, 0x53f8c08c, 0x523aaabb, 0x507c14e2, 0x51be7ed5,
+    0x5ae239e8, 0x5b2053df, 0x5966ed86, 0x58a487b1, 0x5deb9134,
+    0x5c29fb03, 0x5e6f455a, 0x5fad2f6d, 0xe1351b80, 0xe0f771b7,
+    0xe2b1cfee, 0xe373a5d9, 0xe63cb35c, 0xe7fed96b, 0xe5b86732,
+    0xe47a0d05, 0xef264a38, 0xeee4200f, 0xeca29e56, 0xed60f461,
+    0xe82fe2e4, 0xe9ed88d3, 0xebab368a, 0xea695cbd, 0xfd13b8f0,
+    0xfcd1d2c7, 0xfe976c9e, 0xff5506a9, 0xfa1a102c, 0xfbd87a1b,
+    0xf99ec442, 0xf85cae75, 0xf300e948, 0xf2c2837f, 0xf0843d26,
+    0xf1465711, 0xf4094194, 0xf5cb2ba3, 0xf78d95fa, 0xf64fffcd,
+    0xd9785d60, 0xd8ba3757, 0xdafc890e, 0xdb3ee339, 0xde71f5bc,
+    0xdfb39f8b, 0xddf521d2, 0xdc374be5, 0xd76b0cd8, 0xd6a966ef,
+    0xd4efd8b6, 0xd52db281, 0xd062a404, 0xd1a0ce33, 0xd3e6706a,
+    0xd2241a5d, 0xc55efe10, 0xc49c9427, 0xc6da2a7e, 0xc7184049,
+    0xc25756cc, 0xc3953cfb, 0xc1d382a2, 0xc011e895, 0xcb4dafa8,
+    0xca8fc59f, 0xc8c97bc6, 0xc90b11f1, 0xcc440774, 0xcd866d43,
+    0xcfc0d31a, 0xce02b92d, 0x91af9640, 0x906dfc77, 0x922b422e,
+    0x93e92819, 0x96a63e9c, 0x976454ab, 0x9522eaf2, 0x94e080c5,
+    0x9fbcc7f8, 0x9e7eadcf, 0x9c381396, 0x9dfa79a1, 0x98b56f24,
+    0x99770513, 0x9b31bb4a, 0x9af3d17d, 0x8d893530, 0x8c4b5f07,
+    0x8e0de15e, 0x8fcf8b69, 0x8a809dec, 0x8b42f7db, 0x89044982,
+    0x88c623b5, 0x839a6488, 0x82580ebf, 0x801eb0e6, 0x81dcdad1,
+    0x8493cc54, 0x8551a663, 0x8717183a, 0x86d5720d, 0xa9e2d0a0,
+    0xa820ba97, 0xaa6604ce, 0xaba46ef9, 0xaeeb787c, 0xaf29124b,
+    0xad6fac12, 0xacadc625, 0xa7f18118, 0xa633eb2f, 0xa4755576,
+    0xa5b73f41, 0xa0f829c4, 0xa13a43f3, 0xa37cfdaa, 0xa2be979d,
+    0xb5c473d0, 0xb40619e7, 0xb640a7be, 0xb782cd89, 0xb2cddb0c,
+    0xb30fb13b, 0xb1490f62, 0xb08b6555, 0xbbd72268, 0xba15485f,
+    0xb853f606, 0xb9919c31, 0xbcde8ab4, 0xbd1ce083, 0xbf5a5eda,
+    0xbe9834ed},
+   {0x00000000, 0x191b3141, 0x32366282, 0x2b2d53c3, 0x646cc504,
+    0x7d77f445, 0x565aa786, 0x4f4196c7, 0xc8d98a08, 0xd1c2bb49,
+    0xfaefe88a, 0xe3f4d9cb, 0xacb54f0c, 0xb5ae7e4d, 0x9e832d8e,
+    0x87981ccf, 0x4ac21251, 0x53d92310, 0x78f470d3, 0x61ef4192,
+    0x2eaed755, 0x37b5e614, 0x1c98b5d7, 0x05838496, 0x821b9859,
+    0x9b00a918, 0xb02dfadb, 0xa936cb9a, 0xe6775d5d, 0xff6c6c1c,
+    0xd4413fdf, 0xcd5a0e9e, 0x958424a2, 0x8c9f15e3, 0xa7b24620,
+    0xbea97761, 0xf1e8e1a6, 0xe8f3d0e7, 0xc3de8324, 0xdac5b265,
+    0x5d5daeaa, 0x44469feb, 0x6f6bcc28, 0x7670fd69, 0x39316bae,
+    0x202a5aef, 0x0b07092c, 0x121c386d, 0xdf4636f3, 0xc65d07b2,
+    0xed705471, 0xf46b6530, 0xbb2af3f7, 0xa231c2b6, 0x891c9175,
+    0x9007a034, 0x179fbcfb, 0x0e848dba, 0x25a9de79, 0x3cb2ef38,
+    0x73f379ff, 0x6ae848be, 0x41c51b7d, 0x58de2a3c, 0xf0794f05,
+    0xe9627e44, 0xc24f2d87, 0xdb541cc6, 0x94158a01, 0x8d0ebb40,
+    0xa623e883, 0xbf38d9c2, 0x38a0c50d, 0x21bbf44c, 0x0a96a78f,
+    0x138d96ce, 0x5ccc0009, 0x45d73148, 0x6efa628b, 0x77e153ca,
+    0xbabb5d54, 0xa3a06c15, 0x888d3fd6, 0x91960e97, 0xded79850,
+    0xc7cca911, 0xece1fad2, 0xf5facb93, 0x7262d75c, 0x6b79e61d,
+    0x4054b5de, 0x594f849f, 0x160e1258, 0x0f152319, 0x243870da,
+    0x3d23419b, 0x65fd6ba7, 0x7ce65ae6, 0x57cb0925, 0x4ed03864,
+    0x0191aea3, 0x188a9fe2, 0x33a7cc21, 0x2abcfd60, 0xad24e1af,
+    0xb43fd0ee, 0x9f12832d, 0x8609b26c, 0xc94824ab, 0xd05315ea,
+    0xfb7e4629, 0xe2657768, 0x2f3f79f6, 0x362448b7, 0x1d091b74,
+    0x04122a35, 0x4b53bcf2, 0x52488db3, 0x7965de70, 0x607eef31,
+    0xe7e6f3fe, 0xfefdc2bf, 0xd5d0917c, 0xcccba03d, 0x838a36fa,
+    0x9a9107bb, 0xb1bc5478, 0xa8a76539, 0x3b83984b, 0x2298a90a,
+    0x09b5fac9, 0x10aecb88, 0x5fef5d4f, 0x46f46c0e, 0x6dd93fcd,
+    0x74c20e8c, 0xf35a1243, 0xea412302, 0xc16c70c1, 0xd8774180,
+    0x9736d747, 0x8e2de606, 0xa500b5c5, 0xbc1b8484, 0x71418a1a,
+    0x685abb5b, 0x4377e898, 0x5a6cd9d9, 0x152d4f1e, 0x0c367e5f,
+    0x271b2d9c, 0x3e001cdd, 0xb9980012, 0xa0833153, 0x8bae6290,
+    0x92b553d1, 0xddf4c516, 0xc4eff457, 0xefc2a794, 0xf6d996d5,
+    0xae07bce9, 0xb71c8da8, 0x9c31de6b, 0x852aef2a, 0xca6b79ed,
+    0xd37048ac, 0xf85d1b6f, 0xe1462a2e, 0x66de36e1, 0x7fc507a0,
+    0x54e85463, 0x4df36522, 0x02b2f3e5, 0x1ba9c2a4, 0x30849167,
+    0x299fa026, 0xe4c5aeb8, 0xfdde9ff9, 0xd6f3cc3a, 0xcfe8fd7b,
+    0x80a96bbc, 0x99b25afd, 0xb29f093e, 0xab84387f, 0x2c1c24b0,
+    0x350715f1, 0x1e2a4632, 0x07317773, 0x4870e1b4, 0x516bd0f5,
+    0x7a468336, 0x635db277, 0xcbfad74e, 0xd2e1e60f, 0xf9ccb5cc,
+    0xe0d7848d, 0xaf96124a, 0xb68d230b, 0x9da070c8, 0x84bb4189,
+    0x03235d46, 0x1a386c07, 0x31153fc4, 0x280e0e85, 0x674f9842,
+    0x7e54a903, 0x5579fac0, 0x4c62cb81, 0x8138c51f, 0x9823f45e,
+    0xb30ea79d, 0xaa1596dc, 0xe554001b, 0xfc4f315a, 0xd7626299,
+    0xce7953d8, 0x49e14f17, 0x50fa7e56, 0x7bd72d95, 0x62cc1cd4,
+    0x2d8d8a13, 0x3496bb52, 0x1fbbe891, 0x06a0d9d0, 0x5e7ef3ec,
+    0x4765c2ad, 0x6c48916e, 0x7553a02f, 0x3a1236e8, 0x230907a9,
+    0x0824546a, 0x113f652b, 0x96a779e4, 0x8fbc48a5, 0xa4911b66,
+    0xbd8a2a27, 0xf2cbbce0, 0xebd08da1, 0xc0fdde62, 0xd9e6ef23,
+    0x14bce1bd, 0x0da7d0fc, 0x268a833f, 0x3f91b27e, 0x70d024b9,
+    0x69cb15f8, 0x42e6463b, 0x5bfd777a, 0xdc656bb5, 0xc57e5af4,
+    0xee530937, 0xf7483876, 0xb809aeb1, 0xa1129ff0, 0x8a3fcc33,
+    0x9324fd72},
+   {0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
+    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
+    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
+    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
+    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
+    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
+    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
+    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
+    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
+    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
+    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
+    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
+    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
+    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
+    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
+    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
+    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
+    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
+    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
+    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
+    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
+    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
+    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
+    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
+    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
+    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
+    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
+    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
+    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
+    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
+    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
+    0x2d02ef8d}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x0000000000000000, 0x9630077700000000, 0x2c610eee00000000,
+    0xba51099900000000, 0x19c46d0700000000, 0x8ff46a7000000000,
+    0x35a563e900000000, 0xa395649e00000000, 0x3288db0e00000000,
+    0xa4b8dc7900000000, 0x1ee9d5e000000000, 0x88d9d29700000000,
+    0x2b4cb60900000000, 0xbd7cb17e00000000, 0x072db8e700000000,
+    0x911dbf9000000000, 0x6410b71d00000000, 0xf220b06a00000000,
+    0x4871b9f300000000, 0xde41be8400000000, 0x7dd4da1a00000000,
+    0xebe4dd6d00000000, 0x51b5d4f400000000, 0xc785d38300000000,
+    0x56986c1300000000, 0xc0a86b6400000000, 0x7af962fd00000000,
+    0xecc9658a00000000, 0x4f5c011400000000, 0xd96c066300000000,
+    0x633d0ffa00000000, 0xf50d088d00000000, 0xc8206e3b00000000,
+    0x5e10694c00000000, 0xe44160d500000000, 0x727167a200000000,
+    0xd1e4033c00000000, 0x47d4044b00000000, 0xfd850dd200000000,
+    0x6bb50aa500000000, 0xfaa8b53500000000, 0x6c98b24200000000,
+    0xd6c9bbdb00000000, 0x40f9bcac00000000, 0xe36cd83200000000,
+    0x755cdf4500000000, 0xcf0dd6dc00000000, 0x593dd1ab00000000,
+    0xac30d92600000000, 0x3a00de5100000000, 0x8051d7c800000000,
+    0x1661d0bf00000000, 0xb5f4b42100000000, 0x23c4b35600000000,
+    0x9995bacf00000000, 0x0fa5bdb800000000, 0x9eb8022800000000,
+    0x0888055f00000000, 0xb2d90cc600000000, 0x24e90bb100000000,
+    0x877c6f2f00000000, 0x114c685800000000, 0xab1d61c100000000,
+    0x3d2d66b600000000, 0x9041dc7600000000, 0x0671db0100000000,
+    0xbc20d29800000000, 0x2a10d5ef00000000, 0x8985b17100000000,
+    0x1fb5b60600000000, 0xa5e4bf9f00000000, 0x33d4b8e800000000,
+    0xa2c9077800000000, 0x34f9000f00000000, 0x8ea8099600000000,
+    0x18980ee100000000, 0xbb0d6a7f00000000, 0x2d3d6d0800000000,
+    0x976c649100000000, 0x015c63e600000000, 0xf4516b6b00000000,
+    0x62616c1c00000000, 0xd830658500000000, 0x4e0062f200000000,
+    0xed95066c00000000, 0x7ba5011b00000000, 0xc1f4088200000000,
+    0x57c40ff500000000, 0xc6d9b06500000000, 0x50e9b71200000000,
+    0xeab8be8b00000000, 0x7c88b9fc00000000, 0xdf1ddd6200000000,
+    0x492dda1500000000, 0xf37cd38c00000000, 0x654cd4fb00000000,
+    0x5861b24d00000000, 0xce51b53a00000000, 0x7400bca300000000,
+    0xe230bbd400000000, 0x41a5df4a00000000, 0xd795d83d00000000,
+    0x6dc4d1a400000000, 0xfbf4d6d300000000, 0x6ae9694300000000,
+    0xfcd96e3400000000, 0x468867ad00000000, 0xd0b860da00000000,
+    0x732d044400000000, 0xe51d033300000000, 0x5f4c0aaa00000000,
+    0xc97c0ddd00000000, 0x3c71055000000000, 0xaa41022700000000,
+    0x10100bbe00000000, 0x86200cc900000000, 0x25b5685700000000,
+    0xb3856f2000000000, 0x09d466b900000000, 0x9fe461ce00000000,
+    0x0ef9de5e00000000, 0x98c9d92900000000, 0x2298d0b000000000,
+    0xb4a8d7c700000000, 0x173db35900000000, 0x810db42e00000000,
+    0x3b5cbdb700000000, 0xad6cbac000000000, 0x2083b8ed00000000,
+    0xb6b3bf9a00000000, 0x0ce2b60300000000, 0x9ad2b17400000000,
+    0x3947d5ea00000000, 0xaf77d29d00000000, 0x1526db0400000000,
+    0x8316dc7300000000, 0x120b63e300000000, 0x843b649400000000,
+    0x3e6a6d0d00000000, 0xa85a6a7a00000000, 0x0bcf0ee400000000,
+    0x9dff099300000000, 0x27ae000a00000000, 0xb19e077d00000000,
+    0x44930ff000000000, 0xd2a3088700000000, 0x68f2011e00000000,
+    0xfec2066900000000, 0x5d5762f700000000, 0xcb67658000000000,
+    0x71366c1900000000, 0xe7066b6e00000000, 0x761bd4fe00000000,
+    0xe02bd38900000000, 0x5a7ada1000000000, 0xcc4add6700000000,
+    0x6fdfb9f900000000, 0xf9efbe8e00000000, 0x43beb71700000000,
+    0xd58eb06000000000, 0xe8a3d6d600000000, 0x7e93d1a100000000,
+    0xc4c2d83800000000, 0x52f2df4f00000000, 0xf167bbd100000000,
+    0x6757bca600000000, 0xdd06b53f00000000, 0x4b36b24800000000,
+    0xda2b0dd800000000, 0x4c1b0aaf00000000, 0xf64a033600000000,
+    0x607a044100000000, 0xc3ef60df00000000, 0x55df67a800000000,
+    0xef8e6e3100000000, 0x79be694600000000, 0x8cb361cb00000000,
+    0x1a8366bc00000000, 0xa0d26f2500000000, 0x36e2685200000000,
+    0x95770ccc00000000, 0x03470bbb00000000, 0xb916022200000000,
+    0x2f26055500000000, 0xbe3bbac500000000, 0x280bbdb200000000,
+    0x925ab42b00000000, 0x046ab35c00000000, 0xa7ffd7c200000000,
+    0x31cfd0b500000000, 0x8b9ed92c00000000, 0x1daede5b00000000,
+    0xb0c2649b00000000, 0x26f263ec00000000, 0x9ca36a7500000000,
+    0x0a936d0200000000, 0xa906099c00000000, 0x3f360eeb00000000,
+    0x8567077200000000, 0x1357000500000000, 0x824abf9500000000,
+    0x147ab8e200000000, 0xae2bb17b00000000, 0x381bb60c00000000,
+    0x9b8ed29200000000, 0x0dbed5e500000000, 0xb7efdc7c00000000,
+    0x21dfdb0b00000000, 0xd4d2d38600000000, 0x42e2d4f100000000,
+    0xf8b3dd6800000000, 0x6e83da1f00000000, 0xcd16be8100000000,
+    0x5b26b9f600000000, 0xe177b06f00000000, 0x7747b71800000000,
+    0xe65a088800000000, 0x706a0fff00000000, 0xca3b066600000000,
+    0x5c0b011100000000, 0xff9e658f00000000, 0x69ae62f800000000,
+    0xd3ff6b6100000000, 0x45cf6c1600000000, 0x78e20aa000000000,
+    0xeed20dd700000000, 0x5483044e00000000, 0xc2b3033900000000,
+    0x612667a700000000, 0xf71660d000000000, 0x4d47694900000000,
+    0xdb776e3e00000000, 0x4a6ad1ae00000000, 0xdc5ad6d900000000,
+    0x660bdf4000000000, 0xf03bd83700000000, 0x53aebca900000000,
+    0xc59ebbde00000000, 0x7fcfb24700000000, 0xe9ffb53000000000,
+    0x1cf2bdbd00000000, 0x8ac2baca00000000, 0x3093b35300000000,
+    0xa6a3b42400000000, 0x0536d0ba00000000, 0x9306d7cd00000000,
+    0x2957de5400000000, 0xbf67d92300000000, 0x2e7a66b300000000,
+    0xb84a61c400000000, 0x021b685d00000000, 0x942b6f2a00000000,
+    0x37be0bb400000000, 0xa18e0cc300000000, 0x1bdf055a00000000,
+    0x8def022d00000000},
+   {0x0000000000000000, 0x41311b1900000000, 0x8262363200000000,
+    0xc3532d2b00000000, 0x04c56c6400000000, 0x45f4777d00000000,
+    0x86a75a5600000000, 0xc796414f00000000, 0x088ad9c800000000,
+    0x49bbc2d100000000, 0x8ae8effa00000000, 0xcbd9f4e300000000,
+    0x0c4fb5ac00000000, 0x4d7eaeb500000000, 0x8e2d839e00000000,
+    0xcf1c988700000000, 0x5112c24a00000000, 0x1023d95300000000,
+    0xd370f47800000000, 0x9241ef6100000000, 0x55d7ae2e00000000,
+    0x14e6b53700000000, 0xd7b5981c00000000, 0x9684830500000000,
+    0x59981b8200000000, 0x18a9009b00000000, 0xdbfa2db000000000,
+    0x9acb36a900000000, 0x5d5d77e600000000, 0x1c6c6cff00000000,
+    0xdf3f41d400000000, 0x9e0e5acd00000000, 0xa224849500000000,
+    0xe3159f8c00000000, 0x2046b2a700000000, 0x6177a9be00000000,
+    0xa6e1e8f100000000, 0xe7d0f3e800000000, 0x2483dec300000000,
+    0x65b2c5da00000000, 0xaaae5d5d00000000, 0xeb9f464400000000,
+    0x28cc6b6f00000000, 0x69fd707600000000, 0xae6b313900000000,
+    0xef5a2a2000000000, 0x2c09070b00000000, 0x6d381c1200000000,
+    0xf33646df00000000, 0xb2075dc600000000, 0x715470ed00000000,
+    0x30656bf400000000, 0xf7f32abb00000000, 0xb6c231a200000000,
+    0x75911c8900000000, 0x34a0079000000000, 0xfbbc9f1700000000,
+    0xba8d840e00000000, 0x79dea92500000000, 0x38efb23c00000000,
+    0xff79f37300000000, 0xbe48e86a00000000, 0x7d1bc54100000000,
+    0x3c2ade5800000000, 0x054f79f000000000, 0x447e62e900000000,
+    0x872d4fc200000000, 0xc61c54db00000000, 0x018a159400000000,
+    0x40bb0e8d00000000, 0x83e823a600000000, 0xc2d938bf00000000,
+    0x0dc5a03800000000, 0x4cf4bb2100000000, 0x8fa7960a00000000,
+    0xce968d1300000000, 0x0900cc5c00000000, 0x4831d74500000000,
+    0x8b62fa6e00000000, 0xca53e17700000000, 0x545dbbba00000000,
+    0x156ca0a300000000, 0xd63f8d8800000000, 0x970e969100000000,
+    0x5098d7de00000000, 0x11a9ccc700000000, 0xd2fae1ec00000000,
+    0x93cbfaf500000000, 0x5cd7627200000000, 0x1de6796b00000000,
+    0xdeb5544000000000, 0x9f844f5900000000, 0x58120e1600000000,
+    0x1923150f00000000, 0xda70382400000000, 0x9b41233d00000000,
+    0xa76bfd6500000000, 0xe65ae67c00000000, 0x2509cb5700000000,
+    0x6438d04e00000000, 0xa3ae910100000000, 0xe29f8a1800000000,
+    0x21cca73300000000, 0x60fdbc2a00000000, 0xafe124ad00000000,
+    0xeed03fb400000000, 0x2d83129f00000000, 0x6cb2098600000000,
+    0xab2448c900000000, 0xea1553d000000000, 0x29467efb00000000,
+    0x687765e200000000, 0xf6793f2f00000000, 0xb748243600000000,
+    0x741b091d00000000, 0x352a120400000000, 0xf2bc534b00000000,
+    0xb38d485200000000, 0x70de657900000000, 0x31ef7e6000000000,
+    0xfef3e6e700000000, 0xbfc2fdfe00000000, 0x7c91d0d500000000,
+    0x3da0cbcc00000000, 0xfa368a8300000000, 0xbb07919a00000000,
+    0x7854bcb100000000, 0x3965a7a800000000, 0x4b98833b00000000,
+    0x0aa9982200000000, 0xc9fab50900000000, 0x88cbae1000000000,
+    0x4f5def5f00000000, 0x0e6cf44600000000, 0xcd3fd96d00000000,
+    0x8c0ec27400000000, 0x43125af300000000, 0x022341ea00000000,
+    0xc1706cc100000000, 0x804177d800000000, 0x47d7369700000000,
+    0x06e62d8e00000000, 0xc5b500a500000000, 0x84841bbc00000000,
+    0x1a8a417100000000, 0x5bbb5a6800000000, 0x98e8774300000000,
+    0xd9d96c5a00000000, 0x1e4f2d1500000000, 0x5f7e360c00000000,
+    0x9c2d1b2700000000, 0xdd1c003e00000000, 0x120098b900000000,
+    0x533183a000000000, 0x9062ae8b00000000, 0xd153b59200000000,
+    0x16c5f4dd00000000, 0x57f4efc400000000, 0x94a7c2ef00000000,
+    0xd596d9f600000000, 0xe9bc07ae00000000, 0xa88d1cb700000000,
+    0x6bde319c00000000, 0x2aef2a8500000000, 0xed796bca00000000,
+    0xac4870d300000000, 0x6f1b5df800000000, 0x2e2a46e100000000,
+    0xe136de6600000000, 0xa007c57f00000000, 0x6354e85400000000,
+    0x2265f34d00000000, 0xe5f3b20200000000, 0xa4c2a91b00000000,
+    0x6791843000000000, 0x26a09f2900000000, 0xb8aec5e400000000,
+    0xf99fdefd00000000, 0x3accf3d600000000, 0x7bfde8cf00000000,
+    0xbc6ba98000000000, 0xfd5ab29900000000, 0x3e099fb200000000,
+    0x7f3884ab00000000, 0xb0241c2c00000000, 0xf115073500000000,
+    0x32462a1e00000000, 0x7377310700000000, 0xb4e1704800000000,
+    0xf5d06b5100000000, 0x3683467a00000000, 0x77b25d6300000000,
+    0x4ed7facb00000000, 0x0fe6e1d200000000, 0xccb5ccf900000000,
+    0x8d84d7e000000000, 0x4a1296af00000000, 0x0b238db600000000,
+    0xc870a09d00000000, 0x8941bb8400000000, 0x465d230300000000,
+    0x076c381a00000000, 0xc43f153100000000, 0x850e0e2800000000,
+    0x42984f6700000000, 0x03a9547e00000000, 0xc0fa795500000000,
+    0x81cb624c00000000, 0x1fc5388100000000, 0x5ef4239800000000,
+    0x9da70eb300000000, 0xdc9615aa00000000, 0x1b0054e500000000,
+    0x5a314ffc00000000, 0x996262d700000000, 0xd85379ce00000000,
+    0x174fe14900000000, 0x567efa5000000000, 0x952dd77b00000000,
+    0xd41ccc6200000000, 0x138a8d2d00000000, 0x52bb963400000000,
+    0x91e8bb1f00000000, 0xd0d9a00600000000, 0xecf37e5e00000000,
+    0xadc2654700000000, 0x6e91486c00000000, 0x2fa0537500000000,
+    0xe836123a00000000, 0xa907092300000000, 0x6a54240800000000,
+    0x2b653f1100000000, 0xe479a79600000000, 0xa548bc8f00000000,
+    0x661b91a400000000, 0x272a8abd00000000, 0xe0bccbf200000000,
+    0xa18dd0eb00000000, 0x62defdc000000000, 0x23efe6d900000000,
+    0xbde1bc1400000000, 0xfcd0a70d00000000, 0x3f838a2600000000,
+    0x7eb2913f00000000, 0xb924d07000000000, 0xf815cb6900000000,
+    0x3b46e64200000000, 0x7a77fd5b00000000, 0xb56b65dc00000000,
+    0xf45a7ec500000000, 0x370953ee00000000, 0x763848f700000000,
+    0xb1ae09b800000000, 0xf09f12a100000000, 0x33cc3f8a00000000,
+    0x72fd249300000000},
+   {0x0000000000000000, 0x376ac20100000000, 0x6ed4840300000000,
+    0x59be460200000000, 0xdca8090700000000, 0xebc2cb0600000000,
+    0xb27c8d0400000000, 0x85164f0500000000, 0xb851130e00000000,
+    0x8f3bd10f00000000, 0xd685970d00000000, 0xe1ef550c00000000,
+    0x64f91a0900000000, 0x5393d80800000000, 0x0a2d9e0a00000000,
+    0x3d475c0b00000000, 0x70a3261c00000000, 0x47c9e41d00000000,
+    0x1e77a21f00000000, 0x291d601e00000000, 0xac0b2f1b00000000,
+    0x9b61ed1a00000000, 0xc2dfab1800000000, 0xf5b5691900000000,
+    0xc8f2351200000000, 0xff98f71300000000, 0xa626b11100000000,
+    0x914c731000000000, 0x145a3c1500000000, 0x2330fe1400000000,
+    0x7a8eb81600000000, 0x4de47a1700000000, 0xe0464d3800000000,
+    0xd72c8f3900000000, 0x8e92c93b00000000, 0xb9f80b3a00000000,
+    0x3cee443f00000000, 0x0b84863e00000000, 0x523ac03c00000000,
+    0x6550023d00000000, 0x58175e3600000000, 0x6f7d9c3700000000,
+    0x36c3da3500000000, 0x01a9183400000000, 0x84bf573100000000,
+    0xb3d5953000000000, 0xea6bd33200000000, 0xdd01113300000000,
+    0x90e56b2400000000, 0xa78fa92500000000, 0xfe31ef2700000000,
+    0xc95b2d2600000000, 0x4c4d622300000000, 0x7b27a02200000000,
+    0x2299e62000000000, 0x15f3242100000000, 0x28b4782a00000000,
+    0x1fdeba2b00000000, 0x4660fc2900000000, 0x710a3e2800000000,
+    0xf41c712d00000000, 0xc376b32c00000000, 0x9ac8f52e00000000,
+    0xada2372f00000000, 0xc08d9a7000000000, 0xf7e7587100000000,
+    0xae591e7300000000, 0x9933dc7200000000, 0x1c25937700000000,
+    0x2b4f517600000000, 0x72f1177400000000, 0x459bd57500000000,
+    0x78dc897e00000000, 0x4fb64b7f00000000, 0x16080d7d00000000,
+    0x2162cf7c00000000, 0xa474807900000000, 0x931e427800000000,
+    0xcaa0047a00000000, 0xfdcac67b00000000, 0xb02ebc6c00000000,
+    0x87447e6d00000000, 0xdefa386f00000000, 0xe990fa6e00000000,
+    0x6c86b56b00000000, 0x5bec776a00000000, 0x0252316800000000,
+    0x3538f36900000000, 0x087faf6200000000, 0x3f156d6300000000,
+    0x66ab2b6100000000, 0x51c1e96000000000, 0xd4d7a66500000000,
+    0xe3bd646400000000, 0xba03226600000000, 0x8d69e06700000000,
+    0x20cbd74800000000, 0x17a1154900000000, 0x4e1f534b00000000,
+    0x7975914a00000000, 0xfc63de4f00000000, 0xcb091c4e00000000,
+    0x92b75a4c00000000, 0xa5dd984d00000000, 0x989ac44600000000,
+    0xaff0064700000000, 0xf64e404500000000, 0xc124824400000000,
+    0x4432cd4100000000, 0x73580f4000000000, 0x2ae6494200000000,
+    0x1d8c8b4300000000, 0x5068f15400000000, 0x6702335500000000,
+    0x3ebc755700000000, 0x09d6b75600000000, 0x8cc0f85300000000,
+    0xbbaa3a5200000000, 0xe2147c5000000000, 0xd57ebe5100000000,
+    0xe839e25a00000000, 0xdf53205b00000000, 0x86ed665900000000,
+    0xb187a45800000000, 0x3491eb5d00000000, 0x03fb295c00000000,
+    0x5a456f5e00000000, 0x6d2fad5f00000000, 0x801b35e100000000,
+    0xb771f7e000000000, 0xeecfb1e200000000, 0xd9a573e300000000,
+    0x5cb33ce600000000, 0x6bd9fee700000000, 0x3267b8e500000000,
+    0x050d7ae400000000, 0x384a26ef00000000, 0x0f20e4ee00000000,
+    0x569ea2ec00000000, 0x61f460ed00000000, 0xe4e22fe800000000,
+    0xd388ede900000000, 0x8a36abeb00000000, 0xbd5c69ea00000000,
+    0xf0b813fd00000000, 0xc7d2d1fc00000000, 0x9e6c97fe00000000,
+    0xa90655ff00000000, 0x2c101afa00000000, 0x1b7ad8fb00000000,
+    0x42c49ef900000000, 0x75ae5cf800000000, 0x48e900f300000000,
+    0x7f83c2f200000000, 0x263d84f000000000, 0x115746f100000000,
+    0x944109f400000000, 0xa32bcbf500000000, 0xfa958df700000000,
+    0xcdff4ff600000000, 0x605d78d900000000, 0x5737bad800000000,
+    0x0e89fcda00000000, 0x39e33edb00000000, 0xbcf571de00000000,
+    0x8b9fb3df00000000, 0xd221f5dd00000000, 0xe54b37dc00000000,
+    0xd80c6bd700000000, 0xef66a9d600000000, 0xb6d8efd400000000,
+    0x81b22dd500000000, 0x04a462d000000000, 0x33cea0d100000000,
+    0x6a70e6d300000000, 0x5d1a24d200000000, 0x10fe5ec500000000,
+    0x27949cc400000000, 0x7e2adac600000000, 0x494018c700000000,
+    0xcc5657c200000000, 0xfb3c95c300000000, 0xa282d3c100000000,
+    0x95e811c000000000, 0xa8af4dcb00000000, 0x9fc58fca00000000,
+    0xc67bc9c800000000, 0xf1110bc900000000, 0x740744cc00000000,
+    0x436d86cd00000000, 0x1ad3c0cf00000000, 0x2db902ce00000000,
+    0x4096af9100000000, 0x77fc6d9000000000, 0x2e422b9200000000,
+    0x1928e99300000000, 0x9c3ea69600000000, 0xab54649700000000,
+    0xf2ea229500000000, 0xc580e09400000000, 0xf8c7bc9f00000000,
+    0xcfad7e9e00000000, 0x9613389c00000000, 0xa179fa9d00000000,
+    0x246fb59800000000, 0x1305779900000000, 0x4abb319b00000000,
+    0x7dd1f39a00000000, 0x3035898d00000000, 0x075f4b8c00000000,
+    0x5ee10d8e00000000, 0x698bcf8f00000000, 0xec9d808a00000000,
+    0xdbf7428b00000000, 0x8249048900000000, 0xb523c68800000000,
+    0x88649a8300000000, 0xbf0e588200000000, 0xe6b01e8000000000,
+    0xd1dadc8100000000, 0x54cc938400000000, 0x63a6518500000000,
+    0x3a18178700000000, 0x0d72d58600000000, 0xa0d0e2a900000000,
+    0x97ba20a800000000, 0xce0466aa00000000, 0xf96ea4ab00000000,
+    0x7c78ebae00000000, 0x4b1229af00000000, 0x12ac6fad00000000,
+    0x25c6adac00000000, 0x1881f1a700000000, 0x2feb33a600000000,
+    0x765575a400000000, 0x413fb7a500000000, 0xc429f8a000000000,
+    0xf3433aa100000000, 0xaafd7ca300000000, 0x9d97bea200000000,
+    0xd073c4b500000000, 0xe71906b400000000, 0xbea740b600000000,
+    0x89cd82b700000000, 0x0cdbcdb200000000, 0x3bb10fb300000000,
+    0x620f49b100000000, 0x55658bb000000000, 0x6822d7bb00000000,
+    0x5f4815ba00000000, 0x06f653b800000000, 0x319c91b900000000,
+    0xb48adebc00000000, 0x83e01cbd00000000, 0xda5e5abf00000000,
+    0xed3498be00000000},
+   {0x0000000000000000, 0x6567bcb800000000, 0x8bc809aa00000000,
+    0xeeafb51200000000, 0x5797628f00000000, 0x32f0de3700000000,
+    0xdc5f6b2500000000, 0xb938d79d00000000, 0xef28b4c500000000,
+    0x8a4f087d00000000, 0x64e0bd6f00000000, 0x018701d700000000,
+    0xb8bfd64a00000000, 0xddd86af200000000, 0x3377dfe000000000,
+    0x5610635800000000, 0x9f57195000000000, 0xfa30a5e800000000,
+    0x149f10fa00000000, 0x71f8ac4200000000, 0xc8c07bdf00000000,
+    0xada7c76700000000, 0x4308727500000000, 0x266fcecd00000000,
+    0x707fad9500000000, 0x1518112d00000000, 0xfbb7a43f00000000,
+    0x9ed0188700000000, 0x27e8cf1a00000000, 0x428f73a200000000,
+    0xac20c6b000000000, 0xc9477a0800000000, 0x3eaf32a000000000,
+    0x5bc88e1800000000, 0xb5673b0a00000000, 0xd00087b200000000,
+    0x6938502f00000000, 0x0c5fec9700000000, 0xe2f0598500000000,
+    0x8797e53d00000000, 0xd187866500000000, 0xb4e03add00000000,
+    0x5a4f8fcf00000000, 0x3f28337700000000, 0x8610e4ea00000000,
+    0xe377585200000000, 0x0dd8ed4000000000, 0x68bf51f800000000,
+    0xa1f82bf000000000, 0xc49f974800000000, 0x2a30225a00000000,
+    0x4f579ee200000000, 0xf66f497f00000000, 0x9308f5c700000000,
+    0x7da740d500000000, 0x18c0fc6d00000000, 0x4ed09f3500000000,
+    0x2bb7238d00000000, 0xc518969f00000000, 0xa07f2a2700000000,
+    0x1947fdba00000000, 0x7c20410200000000, 0x928ff41000000000,
+    0xf7e848a800000000, 0x3d58149b00000000, 0x583fa82300000000,
+    0xb6901d3100000000, 0xd3f7a18900000000, 0x6acf761400000000,
+    0x0fa8caac00000000, 0xe1077fbe00000000, 0x8460c30600000000,
+    0xd270a05e00000000, 0xb7171ce600000000, 0x59b8a9f400000000,
+    0x3cdf154c00000000, 0x85e7c2d100000000, 0xe0807e6900000000,
+    0x0e2fcb7b00000000, 0x6b4877c300000000, 0xa20f0dcb00000000,
+    0xc768b17300000000, 0x29c7046100000000, 0x4ca0b8d900000000,
+    0xf5986f4400000000, 0x90ffd3fc00000000, 0x7e5066ee00000000,
+    0x1b37da5600000000, 0x4d27b90e00000000, 0x284005b600000000,
+    0xc6efb0a400000000, 0xa3880c1c00000000, 0x1ab0db8100000000,
+    0x7fd7673900000000, 0x9178d22b00000000, 0xf41f6e9300000000,
+    0x03f7263b00000000, 0x66909a8300000000, 0x883f2f9100000000,
+    0xed58932900000000, 0x546044b400000000, 0x3107f80c00000000,
+    0xdfa84d1e00000000, 0xbacff1a600000000, 0xecdf92fe00000000,
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+    0xbb48f07100000000, 0xde2f4cc900000000, 0x3080f9db00000000,
+    0x55e7456300000000, 0x9ca03f6b00000000, 0xf9c783d300000000,
+    0x176836c100000000, 0x720f8a7900000000, 0xcb375de400000000,
+    0xae50e15c00000000, 0x40ff544e00000000, 0x2598e8f600000000,
+    0x73888bae00000000, 0x16ef371600000000, 0xf840820400000000,
+    0x9d273ebc00000000, 0x241fe92100000000, 0x4178559900000000,
+    0xafd7e08b00000000, 0xcab05c3300000000, 0x3bb659ed00000000,
+    0x5ed1e55500000000, 0xb07e504700000000, 0xd519ecff00000000,
+    0x6c213b6200000000, 0x094687da00000000, 0xe7e932c800000000,
+    0x828e8e7000000000, 0xd49eed2800000000, 0xb1f9519000000000,
+    0x5f56e48200000000, 0x3a31583a00000000, 0x83098fa700000000,
+    0xe66e331f00000000, 0x08c1860d00000000, 0x6da63ab500000000,
+    0xa4e140bd00000000, 0xc186fc0500000000, 0x2f29491700000000,
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+    0x8ed162e700000000, 0xebb6de5f00000000, 0x528e09c200000000,
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+    0xea31df8800000000, 0x8f56633000000000, 0x61f9d62200000000,
+    0x049e6a9a00000000, 0xbda6bd0700000000, 0xd8c101bf00000000,
+    0x366eb4ad00000000, 0x5309081500000000, 0x9a4e721d00000000,
+    0xff29cea500000000, 0x11867bb700000000, 0x74e1c70f00000000,
+    0xcdd9109200000000, 0xa8beac2a00000000, 0x4611193800000000,
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+    0x06ee4d7600000000, 0x6389f1ce00000000, 0x8d2644dc00000000,
+    0xe841f86400000000, 0x51792ff900000000, 0x341e934100000000,
+    0xdab1265300000000, 0xbfd69aeb00000000, 0xe9c6f9b300000000,
+    0x8ca1450b00000000, 0x620ef01900000000, 0x07694ca100000000,
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+    0x12715d8c00000000, 0x7716e13400000000, 0xce2e36a900000000,
+    0xab498a1100000000, 0x45e63f0300000000, 0x208183bb00000000,
+    0x7691e0e300000000, 0x13f65c5b00000000, 0xfd59e94900000000,
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+    0xaace8bc600000000, 0xcfa9377e00000000, 0x38417fd600000000,
+    0x5d26c36e00000000, 0xb389767c00000000, 0xd6eecac400000000,
+    0x6fd61d5900000000, 0x0ab1a1e100000000, 0xe41e14f300000000,
+    0x8179a84b00000000, 0xd769cb1300000000, 0xb20e77ab00000000,
+    0x5ca1c2b900000000, 0x39c67e0100000000, 0x80fea99c00000000,
+    0xe599152400000000, 0x0b36a03600000000, 0x6e511c8e00000000,
+    0xa716668600000000, 0xc271da3e00000000, 0x2cde6f2c00000000,
+    0x49b9d39400000000, 0xf081040900000000, 0x95e6b8b100000000,
+    0x7b490da300000000, 0x1e2eb11b00000000, 0x483ed24300000000,
+    0x2d596efb00000000, 0xc3f6dbe900000000, 0xa691675100000000,
+    0x1fa9b0cc00000000, 0x7ace0c7400000000, 0x9461b96600000000,
+    0xf10605de00000000},
+   {0x0000000000000000, 0xb029603d00000000, 0x6053c07a00000000,
+    0xd07aa04700000000, 0xc0a680f500000000, 0x708fe0c800000000,
+    0xa0f5408f00000000, 0x10dc20b200000000, 0xc14b703000000000,
+    0x7162100d00000000, 0xa118b04a00000000, 0x1131d07700000000,
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+    0xf21800a800000000, 0x2262a0ef00000000, 0x924bc0d200000000,
+    0x43dc905000000000, 0xf3f5f06d00000000, 0x238f502a00000000,
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+    0xe329d0df00000000, 0x5300b0e200000000, 0x042fc1c100000000,
+    0xb406a1fc00000000, 0x647c01bb00000000, 0xd455618600000000,
+    0xc489413400000000, 0x74a0210900000000, 0xa4da814e00000000,
+    0x14f3e17300000000, 0xc564b1f100000000, 0x754dd1cc00000000,
+    0xa537718b00000000, 0x151e11b600000000, 0x05c2310400000000,
+    0xb5eb513900000000, 0x6591f17e00000000, 0xd5b8914300000000,
+    0x86b821a100000000, 0x3691419c00000000, 0xe6ebe1db00000000,
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+    0x39d7139000000000, 0xe9adb3d700000000, 0x5984d3ea00000000,
+    0x8813836800000000, 0x383ae35500000000, 0xe840431200000000,
+    0x5869232f00000000, 0x48b5039d00000000, 0xf89c63a000000000,
+    0x28e6c3e700000000, 0x98cfa3da00000000, 0xcbcf133800000000,
+    0x7be6730500000000, 0xab9cd34200000000, 0x1bb5b37f00000000,
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+    0x6ad7a37200000000, 0xdafec34f00000000, 0xca22e3fd00000000,
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+    0xafb3128300000000, 0x1f9a72be00000000, 0x0f46520c00000000,
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+    0x0eaba2c900000000, 0xbe82c2f400000000, 0x6ef862b300000000,
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+    0xb0d2465e00000000, 0x00fb266300000000, 0xd16c76e100000000,
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+    0xc1b0565300000000, 0x969f277000000000, 0x26b6474d00000000,
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+    0x38c1c53600000000, 0x88e8a50b00000000, 0xdfc7d42800000000,
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+    0x1f6154dd00000000, 0xaf4834e000000000, 0x7f3294a700000000,
+    0xcf1bf49a00000000, 0x1e8ca41800000000, 0xaea5c42500000000,
+    0x7edf646200000000, 0xcef6045f00000000, 0xde2a24ed00000000,
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+    0xfda574c700000000, 0x4d8c14fa00000000, 0x9c1b447800000000,
+    0x2c32244500000000, 0xfc48840200000000, 0x4c61e43f00000000,
+    0x5cbdc48d00000000, 0xec94a4b000000000, 0x3cee04f700000000,
+    0x8cc764ca00000000},
+   {0x0000000000000000, 0xa5d35ccb00000000, 0x0ba1c84d00000000,
+    0xae72948600000000, 0x1642919b00000000, 0xb391cd5000000000,
+    0x1de359d600000000, 0xb830051d00000000, 0x6d8253ec00000000,
+    0xc8510f2700000000, 0x66239ba100000000, 0xc3f0c76a00000000,
+    0x7bc0c27700000000, 0xde139ebc00000000, 0x70610a3a00000000,
+    0xd5b256f100000000, 0x9b02d60300000000, 0x3ed18ac800000000,
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+    0xf68085ef00000000, 0x5353d92400000000, 0xfd214da200000000,
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+    0x78b52cf500000000, 0x6c0a580f00000000, 0xc9d904c400000000,
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+    0xdf9b955f00000000, 0x71e901d900000000, 0xd43a5d1200000000,
+    0x01880be300000000, 0xa45b572800000000, 0x0a29c3ae00000000,
+    0xaffa9f6500000000, 0x17ca9a7800000000, 0xb219c6b300000000,
+    0x1c6b523500000000, 0xb9b80efe00000000, 0xf7088e0c00000000,
+    0x52dbd2c700000000, 0xfca9464100000000, 0x597a1a8a00000000,
+    0xe14a1f9700000000, 0x4499435c00000000, 0xeaebd7da00000000,
+    0x4f388b1100000000, 0x9a8adde000000000, 0x3f59812b00000000,
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+    0xac8f71e700000000, 0x095c2d2c00000000, 0xa72eb9aa00000000,
+    0x02fde56100000000, 0xbacde07c00000000, 0x1f1ebcb700000000,
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+    0x96a430ec00000000, 0xee111c1900000000, 0x4bc240d200000000,
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+    0x133051bb00000000, 0xb6e30d7000000000, 0x0ed3086d00000000,
+    0xab0054a600000000, 0x0572c02000000000, 0xa0a19ceb00000000,
+    0xb41ee81100000000, 0x11cdb4da00000000, 0xbfbf205c00000000,
+    0x1a6c7c9700000000, 0xa25c798a00000000, 0x078f254100000000,
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+    0x7c4fe73600000000, 0xd23d73b000000000, 0x77ee2f7b00000000,
+    0xcfde2a6600000000, 0x6a0d76ad00000000, 0xc47fe22b00000000,
+    0x61acbee000000000, 0x2f1c3e1200000000, 0x8acf62d900000000,
+    0x24bdf65f00000000, 0x816eaa9400000000, 0x395eaf8900000000,
+    0x9c8df34200000000, 0x32ff67c400000000, 0x972c3b0f00000000,
+    0x429e6dfe00000000, 0xe74d313500000000, 0x493fa5b300000000,
+    0xececf97800000000, 0x54dcfc6500000000, 0xf10fa0ae00000000,
+    0x5f7d342800000000, 0xfaae68e300000000, 0x821b441600000000,
+    0x27c818dd00000000, 0x89ba8c5b00000000, 0x2c69d09000000000,
+    0x9459d58d00000000, 0x318a894600000000, 0x9ff81dc000000000,
+    0x3a2b410b00000000, 0xef9917fa00000000, 0x4a4a4b3100000000,
+    0xe438dfb700000000, 0x41eb837c00000000, 0xf9db866100000000,
+    0x5c08daaa00000000, 0xf27a4e2c00000000, 0x57a912e700000000,
+    0x1919921500000000, 0xbccacede00000000, 0x12b85a5800000000,
+    0xb76b069300000000, 0x0f5b038e00000000, 0xaa885f4500000000,
+    0x04facbc300000000, 0xa129970800000000, 0x749bc1f900000000,
+    0xd1489d3200000000, 0x7f3a09b400000000, 0xdae9557f00000000,
+    0x62d9506200000000, 0xc70a0ca900000000, 0x6978982f00000000,
+    0xccabc4e400000000},
+   {0x0000000000000000, 0xb40b77a600000000, 0x29119f9700000000,
+    0x9d1ae83100000000, 0x13244ff400000000, 0xa72f385200000000,
+    0x3a35d06300000000, 0x8e3ea7c500000000, 0x674eef3300000000,
+    0xd345989500000000, 0x4e5f70a400000000, 0xfa54070200000000,
+    0x746aa0c700000000, 0xc061d76100000000, 0x5d7b3f5000000000,
+    0xe97048f600000000, 0xce9cde6700000000, 0x7a97a9c100000000,
+    0xe78d41f000000000, 0x5386365600000000, 0xddb8919300000000,
+    0x69b3e63500000000, 0xf4a90e0400000000, 0x40a279a200000000,
+    0xa9d2315400000000, 0x1dd946f200000000, 0x80c3aec300000000,
+    0x34c8d96500000000, 0xbaf67ea000000000, 0x0efd090600000000,
+    0x93e7e13700000000, 0x27ec969100000000, 0x9c39bdcf00000000,
+    0x2832ca6900000000, 0xb528225800000000, 0x012355fe00000000,
+    0x8f1df23b00000000, 0x3b16859d00000000, 0xa60c6dac00000000,
+    0x12071a0a00000000, 0xfb7752fc00000000, 0x4f7c255a00000000,
+    0xd266cd6b00000000, 0x666dbacd00000000, 0xe8531d0800000000,
+    0x5c586aae00000000, 0xc142829f00000000, 0x7549f53900000000,
+    0x52a563a800000000, 0xe6ae140e00000000, 0x7bb4fc3f00000000,
+    0xcfbf8b9900000000, 0x41812c5c00000000, 0xf58a5bfa00000000,
+    0x6890b3cb00000000, 0xdc9bc46d00000000, 0x35eb8c9b00000000,
+    0x81e0fb3d00000000, 0x1cfa130c00000000, 0xa8f164aa00000000,
+    0x26cfc36f00000000, 0x92c4b4c900000000, 0x0fde5cf800000000,
+    0xbbd52b5e00000000, 0x79750b4400000000, 0xcd7e7ce200000000,
+    0x506494d300000000, 0xe46fe37500000000, 0x6a5144b000000000,
+    0xde5a331600000000, 0x4340db2700000000, 0xf74bac8100000000,
+    0x1e3be47700000000, 0xaa3093d100000000, 0x372a7be000000000,
+    0x83210c4600000000, 0x0d1fab8300000000, 0xb914dc2500000000,
+    0x240e341400000000, 0x900543b200000000, 0xb7e9d52300000000,
+    0x03e2a28500000000, 0x9ef84ab400000000, 0x2af33d1200000000,
+    0xa4cd9ad700000000, 0x10c6ed7100000000, 0x8ddc054000000000,
+    0x39d772e600000000, 0xd0a73a1000000000, 0x64ac4db600000000,
+    0xf9b6a58700000000, 0x4dbdd22100000000, 0xc38375e400000000,
+    0x7788024200000000, 0xea92ea7300000000, 0x5e999dd500000000,
+    0xe54cb68b00000000, 0x5147c12d00000000, 0xcc5d291c00000000,
+    0x78565eba00000000, 0xf668f97f00000000, 0x42638ed900000000,
+    0xdf7966e800000000, 0x6b72114e00000000, 0x820259b800000000,
+    0x36092e1e00000000, 0xab13c62f00000000, 0x1f18b18900000000,
+    0x9126164c00000000, 0x252d61ea00000000, 0xb83789db00000000,
+    0x0c3cfe7d00000000, 0x2bd068ec00000000, 0x9fdb1f4a00000000,
+    0x02c1f77b00000000, 0xb6ca80dd00000000, 0x38f4271800000000,
+    0x8cff50be00000000, 0x11e5b88f00000000, 0xa5eecf2900000000,
+    0x4c9e87df00000000, 0xf895f07900000000, 0x658f184800000000,
+    0xd1846fee00000000, 0x5fbac82b00000000, 0xebb1bf8d00000000,
+    0x76ab57bc00000000, 0xc2a0201a00000000, 0xf2ea168800000000,
+    0x46e1612e00000000, 0xdbfb891f00000000, 0x6ff0feb900000000,
+    0xe1ce597c00000000, 0x55c52eda00000000, 0xc8dfc6eb00000000,
+    0x7cd4b14d00000000, 0x95a4f9bb00000000, 0x21af8e1d00000000,
+    0xbcb5662c00000000, 0x08be118a00000000, 0x8680b64f00000000,
+    0x328bc1e900000000, 0xaf9129d800000000, 0x1b9a5e7e00000000,
+    0x3c76c8ef00000000, 0x887dbf4900000000, 0x1567577800000000,
+    0xa16c20de00000000, 0x2f52871b00000000, 0x9b59f0bd00000000,
+    0x0643188c00000000, 0xb2486f2a00000000, 0x5b3827dc00000000,
+    0xef33507a00000000, 0x7229b84b00000000, 0xc622cfed00000000,
+    0x481c682800000000, 0xfc171f8e00000000, 0x610df7bf00000000,
+    0xd506801900000000, 0x6ed3ab4700000000, 0xdad8dce100000000,
+    0x47c234d000000000, 0xf3c9437600000000, 0x7df7e4b300000000,
+    0xc9fc931500000000, 0x54e67b2400000000, 0xe0ed0c8200000000,
+    0x099d447400000000, 0xbd9633d200000000, 0x208cdbe300000000,
+    0x9487ac4500000000, 0x1ab90b8000000000, 0xaeb27c2600000000,
+    0x33a8941700000000, 0x87a3e3b100000000, 0xa04f752000000000,
+    0x1444028600000000, 0x895eeab700000000, 0x3d559d1100000000,
+    0xb36b3ad400000000, 0x07604d7200000000, 0x9a7aa54300000000,
+    0x2e71d2e500000000, 0xc7019a1300000000, 0x730aedb500000000,
+    0xee10058400000000, 0x5a1b722200000000, 0xd425d5e700000000,
+    0x602ea24100000000, 0xfd344a7000000000, 0x493f3dd600000000,
+    0x8b9f1dcc00000000, 0x3f946a6a00000000, 0xa28e825b00000000,
+    0x1685f5fd00000000, 0x98bb523800000000, 0x2cb0259e00000000,
+    0xb1aacdaf00000000, 0x05a1ba0900000000, 0xecd1f2ff00000000,
+    0x58da855900000000, 0xc5c06d6800000000, 0x71cb1ace00000000,
+    0xfff5bd0b00000000, 0x4bfecaad00000000, 0xd6e4229c00000000,
+    0x62ef553a00000000, 0x4503c3ab00000000, 0xf108b40d00000000,
+    0x6c125c3c00000000, 0xd8192b9a00000000, 0x56278c5f00000000,
+    0xe22cfbf900000000, 0x7f3613c800000000, 0xcb3d646e00000000,
+    0x224d2c9800000000, 0x96465b3e00000000, 0x0b5cb30f00000000,
+    0xbf57c4a900000000, 0x3169636c00000000, 0x856214ca00000000,
+    0x1878fcfb00000000, 0xac738b5d00000000, 0x17a6a00300000000,
+    0xa3add7a500000000, 0x3eb73f9400000000, 0x8abc483200000000,
+    0x0482eff700000000, 0xb089985100000000, 0x2d93706000000000,
+    0x999807c600000000, 0x70e84f3000000000, 0xc4e3389600000000,
+    0x59f9d0a700000000, 0xedf2a70100000000, 0x63cc00c400000000,
+    0xd7c7776200000000, 0x4add9f5300000000, 0xfed6e8f500000000,
+    0xd93a7e6400000000, 0x6d3109c200000000, 0xf02be1f300000000,
+    0x4420965500000000, 0xca1e319000000000, 0x7e15463600000000,
+    0xe30fae0700000000, 0x5704d9a100000000, 0xbe74915700000000,
+    0x0a7fe6f100000000, 0x97650ec000000000, 0x236e796600000000,
+    0xad50dea300000000, 0x195ba90500000000, 0x8441413400000000,
+    0x304a369200000000},
+   {0x0000000000000000, 0x9e00aacc00000000, 0x7d07254200000000,
+    0xe3078f8e00000000, 0xfa0e4a8400000000, 0x640ee04800000000,
+    0x87096fc600000000, 0x1909c50a00000000, 0xb51be5d300000000,
+    0x2b1b4f1f00000000, 0xc81cc09100000000, 0x561c6a5d00000000,
+    0x4f15af5700000000, 0xd115059b00000000, 0x32128a1500000000,
+    0xac1220d900000000, 0x2b31bb7c00000000, 0xb53111b000000000,
+    0x56369e3e00000000, 0xc83634f200000000, 0xd13ff1f800000000,
+    0x4f3f5b3400000000, 0xac38d4ba00000000, 0x32387e7600000000,
+    0x9e2a5eaf00000000, 0x002af46300000000, 0xe32d7bed00000000,
+    0x7d2dd12100000000, 0x6424142b00000000, 0xfa24bee700000000,
+    0x1923316900000000, 0x87239ba500000000, 0x566276f900000000,
+    0xc862dc3500000000, 0x2b6553bb00000000, 0xb565f97700000000,
+    0xac6c3c7d00000000, 0x326c96b100000000, 0xd16b193f00000000,
+    0x4f6bb3f300000000, 0xe379932a00000000, 0x7d7939e600000000,
+    0x9e7eb66800000000, 0x007e1ca400000000, 0x1977d9ae00000000,
+    0x8777736200000000, 0x6470fcec00000000, 0xfa70562000000000,
+    0x7d53cd8500000000, 0xe353674900000000, 0x0054e8c700000000,
+    0x9e54420b00000000, 0x875d870100000000, 0x195d2dcd00000000,
+    0xfa5aa24300000000, 0x645a088f00000000, 0xc848285600000000,
+    0x5648829a00000000, 0xb54f0d1400000000, 0x2b4fa7d800000000,
+    0x324662d200000000, 0xac46c81e00000000, 0x4f41479000000000,
+    0xd141ed5c00000000, 0xedc29d2900000000, 0x73c237e500000000,
+    0x90c5b86b00000000, 0x0ec512a700000000, 0x17ccd7ad00000000,
+    0x89cc7d6100000000, 0x6acbf2ef00000000, 0xf4cb582300000000,
+    0x58d978fa00000000, 0xc6d9d23600000000, 0x25de5db800000000,
+    0xbbdef77400000000, 0xa2d7327e00000000, 0x3cd798b200000000,
+    0xdfd0173c00000000, 0x41d0bdf000000000, 0xc6f3265500000000,
+    0x58f38c9900000000, 0xbbf4031700000000, 0x25f4a9db00000000,
+    0x3cfd6cd100000000, 0xa2fdc61d00000000, 0x41fa499300000000,
+    0xdffae35f00000000, 0x73e8c38600000000, 0xede8694a00000000,
+    0x0eefe6c400000000, 0x90ef4c0800000000, 0x89e6890200000000,
+    0x17e623ce00000000, 0xf4e1ac4000000000, 0x6ae1068c00000000,
+    0xbba0ebd000000000, 0x25a0411c00000000, 0xc6a7ce9200000000,
+    0x58a7645e00000000, 0x41aea15400000000, 0xdfae0b9800000000,
+    0x3ca9841600000000, 0xa2a92eda00000000, 0x0ebb0e0300000000,
+    0x90bba4cf00000000, 0x73bc2b4100000000, 0xedbc818d00000000,
+    0xf4b5448700000000, 0x6ab5ee4b00000000, 0x89b261c500000000,
+    0x17b2cb0900000000, 0x909150ac00000000, 0x0e91fa6000000000,
+    0xed9675ee00000000, 0x7396df2200000000, 0x6a9f1a2800000000,
+    0xf49fb0e400000000, 0x17983f6a00000000, 0x899895a600000000,
+    0x258ab57f00000000, 0xbb8a1fb300000000, 0x588d903d00000000,
+    0xc68d3af100000000, 0xdf84fffb00000000, 0x4184553700000000,
+    0xa283dab900000000, 0x3c83707500000000, 0xda853b5300000000,
+    0x4485919f00000000, 0xa7821e1100000000, 0x3982b4dd00000000,
+    0x208b71d700000000, 0xbe8bdb1b00000000, 0x5d8c549500000000,
+    0xc38cfe5900000000, 0x6f9ede8000000000, 0xf19e744c00000000,
+    0x1299fbc200000000, 0x8c99510e00000000, 0x9590940400000000,
+    0x0b903ec800000000, 0xe897b14600000000, 0x76971b8a00000000,
+    0xf1b4802f00000000, 0x6fb42ae300000000, 0x8cb3a56d00000000,
+    0x12b30fa100000000, 0x0bbacaab00000000, 0x95ba606700000000,
+    0x76bdefe900000000, 0xe8bd452500000000, 0x44af65fc00000000,
+    0xdaafcf3000000000, 0x39a840be00000000, 0xa7a8ea7200000000,
+    0xbea12f7800000000, 0x20a185b400000000, 0xc3a60a3a00000000,
+    0x5da6a0f600000000, 0x8ce74daa00000000, 0x12e7e76600000000,
+    0xf1e068e800000000, 0x6fe0c22400000000, 0x76e9072e00000000,
+    0xe8e9ade200000000, 0x0bee226c00000000, 0x95ee88a000000000,
+    0x39fca87900000000, 0xa7fc02b500000000, 0x44fb8d3b00000000,
+    0xdafb27f700000000, 0xc3f2e2fd00000000, 0x5df2483100000000,
+    0xbef5c7bf00000000, 0x20f56d7300000000, 0xa7d6f6d600000000,
+    0x39d65c1a00000000, 0xdad1d39400000000, 0x44d1795800000000,
+    0x5dd8bc5200000000, 0xc3d8169e00000000, 0x20df991000000000,
+    0xbedf33dc00000000, 0x12cd130500000000, 0x8ccdb9c900000000,
+    0x6fca364700000000, 0xf1ca9c8b00000000, 0xe8c3598100000000,
+    0x76c3f34d00000000, 0x95c47cc300000000, 0x0bc4d60f00000000,
+    0x3747a67a00000000, 0xa9470cb600000000, 0x4a40833800000000,
+    0xd44029f400000000, 0xcd49ecfe00000000, 0x5349463200000000,
+    0xb04ec9bc00000000, 0x2e4e637000000000, 0x825c43a900000000,
+    0x1c5ce96500000000, 0xff5b66eb00000000, 0x615bcc2700000000,
+    0x7852092d00000000, 0xe652a3e100000000, 0x05552c6f00000000,
+    0x9b5586a300000000, 0x1c761d0600000000, 0x8276b7ca00000000,
+    0x6171384400000000, 0xff71928800000000, 0xe678578200000000,
+    0x7878fd4e00000000, 0x9b7f72c000000000, 0x057fd80c00000000,
+    0xa96df8d500000000, 0x376d521900000000, 0xd46add9700000000,
+    0x4a6a775b00000000, 0x5363b25100000000, 0xcd63189d00000000,
+    0x2e64971300000000, 0xb0643ddf00000000, 0x6125d08300000000,
+    0xff257a4f00000000, 0x1c22f5c100000000, 0x82225f0d00000000,
+    0x9b2b9a0700000000, 0x052b30cb00000000, 0xe62cbf4500000000,
+    0x782c158900000000, 0xd43e355000000000, 0x4a3e9f9c00000000,
+    0xa939101200000000, 0x3739bade00000000, 0x2e307fd400000000,
+    0xb030d51800000000, 0x53375a9600000000, 0xcd37f05a00000000,
+    0x4a146bff00000000, 0xd414c13300000000, 0x37134ebd00000000,
+    0xa913e47100000000, 0xb01a217b00000000, 0x2e1a8bb700000000,
+    0xcd1d043900000000, 0x531daef500000000, 0xff0f8e2c00000000,
+    0x610f24e000000000, 0x8208ab6e00000000, 0x1c0801a200000000,
+    0x0501c4a800000000, 0x9b016e6400000000, 0x7806e1ea00000000,
+    0xe6064b2600000000}};
+
+#else /* W == 4 */
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xb8bc6765, 0xaa09c88b, 0x12b5afee, 0x8f629757,
+    0x37def032, 0x256b5fdc, 0x9dd738b9, 0xc5b428ef, 0x7d084f8a,
+    0x6fbde064, 0xd7018701, 0x4ad6bfb8, 0xf26ad8dd, 0xe0df7733,
+    0x58631056, 0x5019579f, 0xe8a530fa, 0xfa109f14, 0x42acf871,
+    0xdf7bc0c8, 0x67c7a7ad, 0x75720843, 0xcdce6f26, 0x95ad7f70,
+    0x2d111815, 0x3fa4b7fb, 0x8718d09e, 0x1acfe827, 0xa2738f42,
+    0xb0c620ac, 0x087a47c9, 0xa032af3e, 0x188ec85b, 0x0a3b67b5,
+    0xb28700d0, 0x2f503869, 0x97ec5f0c, 0x8559f0e2, 0x3de59787,
+    0x658687d1, 0xdd3ae0b4, 0xcf8f4f5a, 0x7733283f, 0xeae41086,
+    0x525877e3, 0x40edd80d, 0xf851bf68, 0xf02bf8a1, 0x48979fc4,
+    0x5a22302a, 0xe29e574f, 0x7f496ff6, 0xc7f50893, 0xd540a77d,
+    0x6dfcc018, 0x359fd04e, 0x8d23b72b, 0x9f9618c5, 0x272a7fa0,
+    0xbafd4719, 0x0241207c, 0x10f48f92, 0xa848e8f7, 0x9b14583d,
+    0x23a83f58, 0x311d90b6, 0x89a1f7d3, 0x1476cf6a, 0xaccaa80f,
+    0xbe7f07e1, 0x06c36084, 0x5ea070d2, 0xe61c17b7, 0xf4a9b859,
+    0x4c15df3c, 0xd1c2e785, 0x697e80e0, 0x7bcb2f0e, 0xc377486b,
+    0xcb0d0fa2, 0x73b168c7, 0x6104c729, 0xd9b8a04c, 0x446f98f5,
+    0xfcd3ff90, 0xee66507e, 0x56da371b, 0x0eb9274d, 0xb6054028,
+    0xa4b0efc6, 0x1c0c88a3, 0x81dbb01a, 0x3967d77f, 0x2bd27891,
+    0x936e1ff4, 0x3b26f703, 0x839a9066, 0x912f3f88, 0x299358ed,
+    0xb4446054, 0x0cf80731, 0x1e4da8df, 0xa6f1cfba, 0xfe92dfec,
+    0x462eb889, 0x549b1767, 0xec277002, 0x71f048bb, 0xc94c2fde,
+    0xdbf98030, 0x6345e755, 0x6b3fa09c, 0xd383c7f9, 0xc1366817,
+    0x798a0f72, 0xe45d37cb, 0x5ce150ae, 0x4e54ff40, 0xf6e89825,
+    0xae8b8873, 0x1637ef16, 0x048240f8, 0xbc3e279d, 0x21e91f24,
+    0x99557841, 0x8be0d7af, 0x335cb0ca, 0xed59b63b, 0x55e5d15e,
+    0x47507eb0, 0xffec19d5, 0x623b216c, 0xda874609, 0xc832e9e7,
+    0x708e8e82, 0x28ed9ed4, 0x9051f9b1, 0x82e4565f, 0x3a58313a,
+    0xa78f0983, 0x1f336ee6, 0x0d86c108, 0xb53aa66d, 0xbd40e1a4,
+    0x05fc86c1, 0x1749292f, 0xaff54e4a, 0x322276f3, 0x8a9e1196,
+    0x982bbe78, 0x2097d91d, 0x78f4c94b, 0xc048ae2e, 0xd2fd01c0,
+    0x6a4166a5, 0xf7965e1c, 0x4f2a3979, 0x5d9f9697, 0xe523f1f2,
+    0x4d6b1905, 0xf5d77e60, 0xe762d18e, 0x5fdeb6eb, 0xc2098e52,
+    0x7ab5e937, 0x680046d9, 0xd0bc21bc, 0x88df31ea, 0x3063568f,
+    0x22d6f961, 0x9a6a9e04, 0x07bda6bd, 0xbf01c1d8, 0xadb46e36,
+    0x15080953, 0x1d724e9a, 0xa5ce29ff, 0xb77b8611, 0x0fc7e174,
+    0x9210d9cd, 0x2aacbea8, 0x38191146, 0x80a57623, 0xd8c66675,
+    0x607a0110, 0x72cfaefe, 0xca73c99b, 0x57a4f122, 0xef189647,
+    0xfdad39a9, 0x45115ecc, 0x764dee06, 0xcef18963, 0xdc44268d,
+    0x64f841e8, 0xf92f7951, 0x41931e34, 0x5326b1da, 0xeb9ad6bf,
+    0xb3f9c6e9, 0x0b45a18c, 0x19f00e62, 0xa14c6907, 0x3c9b51be,
+    0x842736db, 0x96929935, 0x2e2efe50, 0x2654b999, 0x9ee8defc,
+    0x8c5d7112, 0x34e11677, 0xa9362ece, 0x118a49ab, 0x033fe645,
+    0xbb838120, 0xe3e09176, 0x5b5cf613, 0x49e959fd, 0xf1553e98,
+    0x6c820621, 0xd43e6144, 0xc68bceaa, 0x7e37a9cf, 0xd67f4138,
+    0x6ec3265d, 0x7c7689b3, 0xc4caeed6, 0x591dd66f, 0xe1a1b10a,
+    0xf3141ee4, 0x4ba87981, 0x13cb69d7, 0xab770eb2, 0xb9c2a15c,
+    0x017ec639, 0x9ca9fe80, 0x241599e5, 0x36a0360b, 0x8e1c516e,
+    0x866616a7, 0x3eda71c2, 0x2c6fde2c, 0x94d3b949, 0x090481f0,
+    0xb1b8e695, 0xa30d497b, 0x1bb12e1e, 0x43d23e48, 0xfb6e592d,
+    0xe9dbf6c3, 0x516791a6, 0xccb0a91f, 0x740cce7a, 0x66b96194,
+    0xde0506f1},
+   {0x00000000, 0x01c26a37, 0x0384d46e, 0x0246be59, 0x0709a8dc,
+    0x06cbc2eb, 0x048d7cb2, 0x054f1685, 0x0e1351b8, 0x0fd13b8f,
+    0x0d9785d6, 0x0c55efe1, 0x091af964, 0x08d89353, 0x0a9e2d0a,
+    0x0b5c473d, 0x1c26a370, 0x1de4c947, 0x1fa2771e, 0x1e601d29,
+    0x1b2f0bac, 0x1aed619b, 0x18abdfc2, 0x1969b5f5, 0x1235f2c8,
+    0x13f798ff, 0x11b126a6, 0x10734c91, 0x153c5a14, 0x14fe3023,
+    0x16b88e7a, 0x177ae44d, 0x384d46e0, 0x398f2cd7, 0x3bc9928e,
+    0x3a0bf8b9, 0x3f44ee3c, 0x3e86840b, 0x3cc03a52, 0x3d025065,
+    0x365e1758, 0x379c7d6f, 0x35dac336, 0x3418a901, 0x3157bf84,
+    0x3095d5b3, 0x32d36bea, 0x331101dd, 0x246be590, 0x25a98fa7,
+    0x27ef31fe, 0x262d5bc9, 0x23624d4c, 0x22a0277b, 0x20e69922,
+    0x2124f315, 0x2a78b428, 0x2bbade1f, 0x29fc6046, 0x283e0a71,
+    0x2d711cf4, 0x2cb376c3, 0x2ef5c89a, 0x2f37a2ad, 0x709a8dc0,
+    0x7158e7f7, 0x731e59ae, 0x72dc3399, 0x7793251c, 0x76514f2b,
+    0x7417f172, 0x75d59b45, 0x7e89dc78, 0x7f4bb64f, 0x7d0d0816,
+    0x7ccf6221, 0x798074a4, 0x78421e93, 0x7a04a0ca, 0x7bc6cafd,
+    0x6cbc2eb0, 0x6d7e4487, 0x6f38fade, 0x6efa90e9, 0x6bb5866c,
+    0x6a77ec5b, 0x68315202, 0x69f33835, 0x62af7f08, 0x636d153f,
+    0x612bab66, 0x60e9c151, 0x65a6d7d4, 0x6464bde3, 0x662203ba,
+    0x67e0698d, 0x48d7cb20, 0x4915a117, 0x4b531f4e, 0x4a917579,
+    0x4fde63fc, 0x4e1c09cb, 0x4c5ab792, 0x4d98dda5, 0x46c49a98,
+    0x4706f0af, 0x45404ef6, 0x448224c1, 0x41cd3244, 0x400f5873,
+    0x4249e62a, 0x438b8c1d, 0x54f16850, 0x55330267, 0x5775bc3e,
+    0x56b7d609, 0x53f8c08c, 0x523aaabb, 0x507c14e2, 0x51be7ed5,
+    0x5ae239e8, 0x5b2053df, 0x5966ed86, 0x58a487b1, 0x5deb9134,
+    0x5c29fb03, 0x5e6f455a, 0x5fad2f6d, 0xe1351b80, 0xe0f771b7,
+    0xe2b1cfee, 0xe373a5d9, 0xe63cb35c, 0xe7fed96b, 0xe5b86732,
+    0xe47a0d05, 0xef264a38, 0xeee4200f, 0xeca29e56, 0xed60f461,
+    0xe82fe2e4, 0xe9ed88d3, 0xebab368a, 0xea695cbd, 0xfd13b8f0,
+    0xfcd1d2c7, 0xfe976c9e, 0xff5506a9, 0xfa1a102c, 0xfbd87a1b,
+    0xf99ec442, 0xf85cae75, 0xf300e948, 0xf2c2837f, 0xf0843d26,
+    0xf1465711, 0xf4094194, 0xf5cb2ba3, 0xf78d95fa, 0xf64fffcd,
+    0xd9785d60, 0xd8ba3757, 0xdafc890e, 0xdb3ee339, 0xde71f5bc,
+    0xdfb39f8b, 0xddf521d2, 0xdc374be5, 0xd76b0cd8, 0xd6a966ef,
+    0xd4efd8b6, 0xd52db281, 0xd062a404, 0xd1a0ce33, 0xd3e6706a,
+    0xd2241a5d, 0xc55efe10, 0xc49c9427, 0xc6da2a7e, 0xc7184049,
+    0xc25756cc, 0xc3953cfb, 0xc1d382a2, 0xc011e895, 0xcb4dafa8,
+    0xca8fc59f, 0xc8c97bc6, 0xc90b11f1, 0xcc440774, 0xcd866d43,
+    0xcfc0d31a, 0xce02b92d, 0x91af9640, 0x906dfc77, 0x922b422e,
+    0x93e92819, 0x96a63e9c, 0x976454ab, 0x9522eaf2, 0x94e080c5,
+    0x9fbcc7f8, 0x9e7eadcf, 0x9c381396, 0x9dfa79a1, 0x98b56f24,
+    0x99770513, 0x9b31bb4a, 0x9af3d17d, 0x8d893530, 0x8c4b5f07,
+    0x8e0de15e, 0x8fcf8b69, 0x8a809dec, 0x8b42f7db, 0x89044982,
+    0x88c623b5, 0x839a6488, 0x82580ebf, 0x801eb0e6, 0x81dcdad1,
+    0x8493cc54, 0x8551a663, 0x8717183a, 0x86d5720d, 0xa9e2d0a0,
+    0xa820ba97, 0xaa6604ce, 0xaba46ef9, 0xaeeb787c, 0xaf29124b,
+    0xad6fac12, 0xacadc625, 0xa7f18118, 0xa633eb2f, 0xa4755576,
+    0xa5b73f41, 0xa0f829c4, 0xa13a43f3, 0xa37cfdaa, 0xa2be979d,
+    0xb5c473d0, 0xb40619e7, 0xb640a7be, 0xb782cd89, 0xb2cddb0c,
+    0xb30fb13b, 0xb1490f62, 0xb08b6555, 0xbbd72268, 0xba15485f,
+    0xb853f606, 0xb9919c31, 0xbcde8ab4, 0xbd1ce083, 0xbf5a5eda,
+    0xbe9834ed},
+   {0x00000000, 0x191b3141, 0x32366282, 0x2b2d53c3, 0x646cc504,
+    0x7d77f445, 0x565aa786, 0x4f4196c7, 0xc8d98a08, 0xd1c2bb49,
+    0xfaefe88a, 0xe3f4d9cb, 0xacb54f0c, 0xb5ae7e4d, 0x9e832d8e,
+    0x87981ccf, 0x4ac21251, 0x53d92310, 0x78f470d3, 0x61ef4192,
+    0x2eaed755, 0x37b5e614, 0x1c98b5d7, 0x05838496, 0x821b9859,
+    0x9b00a918, 0xb02dfadb, 0xa936cb9a, 0xe6775d5d, 0xff6c6c1c,
+    0xd4413fdf, 0xcd5a0e9e, 0x958424a2, 0x8c9f15e3, 0xa7b24620,
+    0xbea97761, 0xf1e8e1a6, 0xe8f3d0e7, 0xc3de8324, 0xdac5b265,
+    0x5d5daeaa, 0x44469feb, 0x6f6bcc28, 0x7670fd69, 0x39316bae,
+    0x202a5aef, 0x0b07092c, 0x121c386d, 0xdf4636f3, 0xc65d07b2,
+    0xed705471, 0xf46b6530, 0xbb2af3f7, 0xa231c2b6, 0x891c9175,
+    0x9007a034, 0x179fbcfb, 0x0e848dba, 0x25a9de79, 0x3cb2ef38,
+    0x73f379ff, 0x6ae848be, 0x41c51b7d, 0x58de2a3c, 0xf0794f05,
+    0xe9627e44, 0xc24f2d87, 0xdb541cc6, 0x94158a01, 0x8d0ebb40,
+    0xa623e883, 0xbf38d9c2, 0x38a0c50d, 0x21bbf44c, 0x0a96a78f,
+    0x138d96ce, 0x5ccc0009, 0x45d73148, 0x6efa628b, 0x77e153ca,
+    0xbabb5d54, 0xa3a06c15, 0x888d3fd6, 0x91960e97, 0xded79850,
+    0xc7cca911, 0xece1fad2, 0xf5facb93, 0x7262d75c, 0x6b79e61d,
+    0x4054b5de, 0x594f849f, 0x160e1258, 0x0f152319, 0x243870da,
+    0x3d23419b, 0x65fd6ba7, 0x7ce65ae6, 0x57cb0925, 0x4ed03864,
+    0x0191aea3, 0x188a9fe2, 0x33a7cc21, 0x2abcfd60, 0xad24e1af,
+    0xb43fd0ee, 0x9f12832d, 0x8609b26c, 0xc94824ab, 0xd05315ea,
+    0xfb7e4629, 0xe2657768, 0x2f3f79f6, 0x362448b7, 0x1d091b74,
+    0x04122a35, 0x4b53bcf2, 0x52488db3, 0x7965de70, 0x607eef31,
+    0xe7e6f3fe, 0xfefdc2bf, 0xd5d0917c, 0xcccba03d, 0x838a36fa,
+    0x9a9107bb, 0xb1bc5478, 0xa8a76539, 0x3b83984b, 0x2298a90a,
+    0x09b5fac9, 0x10aecb88, 0x5fef5d4f, 0x46f46c0e, 0x6dd93fcd,
+    0x74c20e8c, 0xf35a1243, 0xea412302, 0xc16c70c1, 0xd8774180,
+    0x9736d747, 0x8e2de606, 0xa500b5c5, 0xbc1b8484, 0x71418a1a,
+    0x685abb5b, 0x4377e898, 0x5a6cd9d9, 0x152d4f1e, 0x0c367e5f,
+    0x271b2d9c, 0x3e001cdd, 0xb9980012, 0xa0833153, 0x8bae6290,
+    0x92b553d1, 0xddf4c516, 0xc4eff457, 0xefc2a794, 0xf6d996d5,
+    0xae07bce9, 0xb71c8da8, 0x9c31de6b, 0x852aef2a, 0xca6b79ed,
+    0xd37048ac, 0xf85d1b6f, 0xe1462a2e, 0x66de36e1, 0x7fc507a0,
+    0x54e85463, 0x4df36522, 0x02b2f3e5, 0x1ba9c2a4, 0x30849167,
+    0x299fa026, 0xe4c5aeb8, 0xfdde9ff9, 0xd6f3cc3a, 0xcfe8fd7b,
+    0x80a96bbc, 0x99b25afd, 0xb29f093e, 0xab84387f, 0x2c1c24b0,
+    0x350715f1, 0x1e2a4632, 0x07317773, 0x4870e1b4, 0x516bd0f5,
+    0x7a468336, 0x635db277, 0xcbfad74e, 0xd2e1e60f, 0xf9ccb5cc,
+    0xe0d7848d, 0xaf96124a, 0xb68d230b, 0x9da070c8, 0x84bb4189,
+    0x03235d46, 0x1a386c07, 0x31153fc4, 0x280e0e85, 0x674f9842,
+    0x7e54a903, 0x5579fac0, 0x4c62cb81, 0x8138c51f, 0x9823f45e,
+    0xb30ea79d, 0xaa1596dc, 0xe554001b, 0xfc4f315a, 0xd7626299,
+    0xce7953d8, 0x49e14f17, 0x50fa7e56, 0x7bd72d95, 0x62cc1cd4,
+    0x2d8d8a13, 0x3496bb52, 0x1fbbe891, 0x06a0d9d0, 0x5e7ef3ec,
+    0x4765c2ad, 0x6c48916e, 0x7553a02f, 0x3a1236e8, 0x230907a9,
+    0x0824546a, 0x113f652b, 0x96a779e4, 0x8fbc48a5, 0xa4911b66,
+    0xbd8a2a27, 0xf2cbbce0, 0xebd08da1, 0xc0fdde62, 0xd9e6ef23,
+    0x14bce1bd, 0x0da7d0fc, 0x268a833f, 0x3f91b27e, 0x70d024b9,
+    0x69cb15f8, 0x42e6463b, 0x5bfd777a, 0xdc656bb5, 0xc57e5af4,
+    0xee530937, 0xf7483876, 0xb809aeb1, 0xa1129ff0, 0x8a3fcc33,
+    0x9324fd72},
+   {0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
+    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
+    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
+    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
+    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
+    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
+    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
+    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
+    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
+    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
+    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
+    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
+    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
+    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
+    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
+    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
+    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
+    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
+    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
+    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
+    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
+    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
+    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
+    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
+    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
+    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
+    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
+    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
+    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
+    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
+    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
+    0x2d02ef8d}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x00000000, 0x96300777, 0x2c610eee, 0xba510999, 0x19c46d07,
+    0x8ff46a70, 0x35a563e9, 0xa395649e, 0x3288db0e, 0xa4b8dc79,
+    0x1ee9d5e0, 0x88d9d297, 0x2b4cb609, 0xbd7cb17e, 0x072db8e7,
+    0x911dbf90, 0x6410b71d, 0xf220b06a, 0x4871b9f3, 0xde41be84,
+    0x7dd4da1a, 0xebe4dd6d, 0x51b5d4f4, 0xc785d383, 0x56986c13,
+    0xc0a86b64, 0x7af962fd, 0xecc9658a, 0x4f5c0114, 0xd96c0663,
+    0x633d0ffa, 0xf50d088d, 0xc8206e3b, 0x5e10694c, 0xe44160d5,
+    0x727167a2, 0xd1e4033c, 0x47d4044b, 0xfd850dd2, 0x6bb50aa5,
+    0xfaa8b535, 0x6c98b242, 0xd6c9bbdb, 0x40f9bcac, 0xe36cd832,
+    0x755cdf45, 0xcf0dd6dc, 0x593dd1ab, 0xac30d926, 0x3a00de51,
+    0x8051d7c8, 0x1661d0bf, 0xb5f4b421, 0x23c4b356, 0x9995bacf,
+    0x0fa5bdb8, 0x9eb80228, 0x0888055f, 0xb2d90cc6, 0x24e90bb1,
+    0x877c6f2f, 0x114c6858, 0xab1d61c1, 0x3d2d66b6, 0x9041dc76,
+    0x0671db01, 0xbc20d298, 0x2a10d5ef, 0x8985b171, 0x1fb5b606,
+    0xa5e4bf9f, 0x33d4b8e8, 0xa2c90778, 0x34f9000f, 0x8ea80996,
+    0x18980ee1, 0xbb0d6a7f, 0x2d3d6d08, 0x976c6491, 0x015c63e6,
+    0xf4516b6b, 0x62616c1c, 0xd8306585, 0x4e0062f2, 0xed95066c,
+    0x7ba5011b, 0xc1f40882, 0x57c40ff5, 0xc6d9b065, 0x50e9b712,
+    0xeab8be8b, 0x7c88b9fc, 0xdf1ddd62, 0x492dda15, 0xf37cd38c,
+    0x654cd4fb, 0x5861b24d, 0xce51b53a, 0x7400bca3, 0xe230bbd4,
+    0x41a5df4a, 0xd795d83d, 0x6dc4d1a4, 0xfbf4d6d3, 0x6ae96943,
+    0xfcd96e34, 0x468867ad, 0xd0b860da, 0x732d0444, 0xe51d0333,
+    0x5f4c0aaa, 0xc97c0ddd, 0x3c710550, 0xaa410227, 0x10100bbe,
+    0x86200cc9, 0x25b56857, 0xb3856f20, 0x09d466b9, 0x9fe461ce,
+    0x0ef9de5e, 0x98c9d929, 0x2298d0b0, 0xb4a8d7c7, 0x173db359,
+    0x810db42e, 0x3b5cbdb7, 0xad6cbac0, 0x2083b8ed, 0xb6b3bf9a,
+    0x0ce2b603, 0x9ad2b174, 0x3947d5ea, 0xaf77d29d, 0x1526db04,
+    0x8316dc73, 0x120b63e3, 0x843b6494, 0x3e6a6d0d, 0xa85a6a7a,
+    0x0bcf0ee4, 0x9dff0993, 0x27ae000a, 0xb19e077d, 0x44930ff0,
+    0xd2a30887, 0x68f2011e, 0xfec20669, 0x5d5762f7, 0xcb676580,
+    0x71366c19, 0xe7066b6e, 0x761bd4fe, 0xe02bd389, 0x5a7ada10,
+    0xcc4add67, 0x6fdfb9f9, 0xf9efbe8e, 0x43beb717, 0xd58eb060,
+    0xe8a3d6d6, 0x7e93d1a1, 0xc4c2d838, 0x52f2df4f, 0xf167bbd1,
+    0x6757bca6, 0xdd06b53f, 0x4b36b248, 0xda2b0dd8, 0x4c1b0aaf,
+    0xf64a0336, 0x607a0441, 0xc3ef60df, 0x55df67a8, 0xef8e6e31,
+    0x79be6946, 0x8cb361cb, 0x1a8366bc, 0xa0d26f25, 0x36e26852,
+    0x95770ccc, 0x03470bbb, 0xb9160222, 0x2f260555, 0xbe3bbac5,
+    0x280bbdb2, 0x925ab42b, 0x046ab35c, 0xa7ffd7c2, 0x31cfd0b5,
+    0x8b9ed92c, 0x1daede5b, 0xb0c2649b, 0x26f263ec, 0x9ca36a75,
+    0x0a936d02, 0xa906099c, 0x3f360eeb, 0x85670772, 0x13570005,
+    0x824abf95, 0x147ab8e2, 0xae2bb17b, 0x381bb60c, 0x9b8ed292,
+    0x0dbed5e5, 0xb7efdc7c, 0x21dfdb0b, 0xd4d2d386, 0x42e2d4f1,
+    0xf8b3dd68, 0x6e83da1f, 0xcd16be81, 0x5b26b9f6, 0xe177b06f,
+    0x7747b718, 0xe65a0888, 0x706a0fff, 0xca3b0666, 0x5c0b0111,
+    0xff9e658f, 0x69ae62f8, 0xd3ff6b61, 0x45cf6c16, 0x78e20aa0,
+    0xeed20dd7, 0x5483044e, 0xc2b30339, 0x612667a7, 0xf71660d0,
+    0x4d476949, 0xdb776e3e, 0x4a6ad1ae, 0xdc5ad6d9, 0x660bdf40,
+    0xf03bd837, 0x53aebca9, 0xc59ebbde, 0x7fcfb247, 0xe9ffb530,
+    0x1cf2bdbd, 0x8ac2baca, 0x3093b353, 0xa6a3b424, 0x0536d0ba,
+    0x9306d7cd, 0x2957de54, 0xbf67d923, 0x2e7a66b3, 0xb84a61c4,
+    0x021b685d, 0x942b6f2a, 0x37be0bb4, 0xa18e0cc3, 0x1bdf055a,
+    0x8def022d},
+   {0x00000000, 0x41311b19, 0x82623632, 0xc3532d2b, 0x04c56c64,
+    0x45f4777d, 0x86a75a56, 0xc796414f, 0x088ad9c8, 0x49bbc2d1,
+    0x8ae8effa, 0xcbd9f4e3, 0x0c4fb5ac, 0x4d7eaeb5, 0x8e2d839e,
+    0xcf1c9887, 0x5112c24a, 0x1023d953, 0xd370f478, 0x9241ef61,
+    0x55d7ae2e, 0x14e6b537, 0xd7b5981c, 0x96848305, 0x59981b82,
+    0x18a9009b, 0xdbfa2db0, 0x9acb36a9, 0x5d5d77e6, 0x1c6c6cff,
+    0xdf3f41d4, 0x9e0e5acd, 0xa2248495, 0xe3159f8c, 0x2046b2a7,
+    0x6177a9be, 0xa6e1e8f1, 0xe7d0f3e8, 0x2483dec3, 0x65b2c5da,
+    0xaaae5d5d, 0xeb9f4644, 0x28cc6b6f, 0x69fd7076, 0xae6b3139,
+    0xef5a2a20, 0x2c09070b, 0x6d381c12, 0xf33646df, 0xb2075dc6,
+    0x715470ed, 0x30656bf4, 0xf7f32abb, 0xb6c231a2, 0x75911c89,
+    0x34a00790, 0xfbbc9f17, 0xba8d840e, 0x79dea925, 0x38efb23c,
+    0xff79f373, 0xbe48e86a, 0x7d1bc541, 0x3c2ade58, 0x054f79f0,
+    0x447e62e9, 0x872d4fc2, 0xc61c54db, 0x018a1594, 0x40bb0e8d,
+    0x83e823a6, 0xc2d938bf, 0x0dc5a038, 0x4cf4bb21, 0x8fa7960a,
+    0xce968d13, 0x0900cc5c, 0x4831d745, 0x8b62fa6e, 0xca53e177,
+    0x545dbbba, 0x156ca0a3, 0xd63f8d88, 0x970e9691, 0x5098d7de,
+    0x11a9ccc7, 0xd2fae1ec, 0x93cbfaf5, 0x5cd76272, 0x1de6796b,
+    0xdeb55440, 0x9f844f59, 0x58120e16, 0x1923150f, 0xda703824,
+    0x9b41233d, 0xa76bfd65, 0xe65ae67c, 0x2509cb57, 0x6438d04e,
+    0xa3ae9101, 0xe29f8a18, 0x21cca733, 0x60fdbc2a, 0xafe124ad,
+    0xeed03fb4, 0x2d83129f, 0x6cb20986, 0xab2448c9, 0xea1553d0,
+    0x29467efb, 0x687765e2, 0xf6793f2f, 0xb7482436, 0x741b091d,
+    0x352a1204, 0xf2bc534b, 0xb38d4852, 0x70de6579, 0x31ef7e60,
+    0xfef3e6e7, 0xbfc2fdfe, 0x7c91d0d5, 0x3da0cbcc, 0xfa368a83,
+    0xbb07919a, 0x7854bcb1, 0x3965a7a8, 0x4b98833b, 0x0aa99822,
+    0xc9fab509, 0x88cbae10, 0x4f5def5f, 0x0e6cf446, 0xcd3fd96d,
+    0x8c0ec274, 0x43125af3, 0x022341ea, 0xc1706cc1, 0x804177d8,
+    0x47d73697, 0x06e62d8e, 0xc5b500a5, 0x84841bbc, 0x1a8a4171,
+    0x5bbb5a68, 0x98e87743, 0xd9d96c5a, 0x1e4f2d15, 0x5f7e360c,
+    0x9c2d1b27, 0xdd1c003e, 0x120098b9, 0x533183a0, 0x9062ae8b,
+    0xd153b592, 0x16c5f4dd, 0x57f4efc4, 0x94a7c2ef, 0xd596d9f6,
+    0xe9bc07ae, 0xa88d1cb7, 0x6bde319c, 0x2aef2a85, 0xed796bca,
+    0xac4870d3, 0x6f1b5df8, 0x2e2a46e1, 0xe136de66, 0xa007c57f,
+    0x6354e854, 0x2265f34d, 0xe5f3b202, 0xa4c2a91b, 0x67918430,
+    0x26a09f29, 0xb8aec5e4, 0xf99fdefd, 0x3accf3d6, 0x7bfde8cf,
+    0xbc6ba980, 0xfd5ab299, 0x3e099fb2, 0x7f3884ab, 0xb0241c2c,
+    0xf1150735, 0x32462a1e, 0x73773107, 0xb4e17048, 0xf5d06b51,
+    0x3683467a, 0x77b25d63, 0x4ed7facb, 0x0fe6e1d2, 0xccb5ccf9,
+    0x8d84d7e0, 0x4a1296af, 0x0b238db6, 0xc870a09d, 0x8941bb84,
+    0x465d2303, 0x076c381a, 0xc43f1531, 0x850e0e28, 0x42984f67,
+    0x03a9547e, 0xc0fa7955, 0x81cb624c, 0x1fc53881, 0x5ef42398,
+    0x9da70eb3, 0xdc9615aa, 0x1b0054e5, 0x5a314ffc, 0x996262d7,
+    0xd85379ce, 0x174fe149, 0x567efa50, 0x952dd77b, 0xd41ccc62,
+    0x138a8d2d, 0x52bb9634, 0x91e8bb1f, 0xd0d9a006, 0xecf37e5e,
+    0xadc26547, 0x6e91486c, 0x2fa05375, 0xe836123a, 0xa9070923,
+    0x6a542408, 0x2b653f11, 0xe479a796, 0xa548bc8f, 0x661b91a4,
+    0x272a8abd, 0xe0bccbf2, 0xa18dd0eb, 0x62defdc0, 0x23efe6d9,
+    0xbde1bc14, 0xfcd0a70d, 0x3f838a26, 0x7eb2913f, 0xb924d070,
+    0xf815cb69, 0x3b46e642, 0x7a77fd5b, 0xb56b65dc, 0xf45a7ec5,
+    0x370953ee, 0x763848f7, 0xb1ae09b8, 0xf09f12a1, 0x33cc3f8a,
+    0x72fd2493},
+   {0x00000000, 0x376ac201, 0x6ed48403, 0x59be4602, 0xdca80907,
+    0xebc2cb06, 0xb27c8d04, 0x85164f05, 0xb851130e, 0x8f3bd10f,
+    0xd685970d, 0xe1ef550c, 0x64f91a09, 0x5393d808, 0x0a2d9e0a,
+    0x3d475c0b, 0x70a3261c, 0x47c9e41d, 0x1e77a21f, 0x291d601e,
+    0xac0b2f1b, 0x9b61ed1a, 0xc2dfab18, 0xf5b56919, 0xc8f23512,
+    0xff98f713, 0xa626b111, 0x914c7310, 0x145a3c15, 0x2330fe14,
+    0x7a8eb816, 0x4de47a17, 0xe0464d38, 0xd72c8f39, 0x8e92c93b,
+    0xb9f80b3a, 0x3cee443f, 0x0b84863e, 0x523ac03c, 0x6550023d,
+    0x58175e36, 0x6f7d9c37, 0x36c3da35, 0x01a91834, 0x84bf5731,
+    0xb3d59530, 0xea6bd332, 0xdd011133, 0x90e56b24, 0xa78fa925,
+    0xfe31ef27, 0xc95b2d26, 0x4c4d6223, 0x7b27a022, 0x2299e620,
+    0x15f32421, 0x28b4782a, 0x1fdeba2b, 0x4660fc29, 0x710a3e28,
+    0xf41c712d, 0xc376b32c, 0x9ac8f52e, 0xada2372f, 0xc08d9a70,
+    0xf7e75871, 0xae591e73, 0x9933dc72, 0x1c259377, 0x2b4f5176,
+    0x72f11774, 0x459bd575, 0x78dc897e, 0x4fb64b7f, 0x16080d7d,
+    0x2162cf7c, 0xa4748079, 0x931e4278, 0xcaa0047a, 0xfdcac67b,
+    0xb02ebc6c, 0x87447e6d, 0xdefa386f, 0xe990fa6e, 0x6c86b56b,
+    0x5bec776a, 0x02523168, 0x3538f369, 0x087faf62, 0x3f156d63,
+    0x66ab2b61, 0x51c1e960, 0xd4d7a665, 0xe3bd6464, 0xba032266,
+    0x8d69e067, 0x20cbd748, 0x17a11549, 0x4e1f534b, 0x7975914a,
+    0xfc63de4f, 0xcb091c4e, 0x92b75a4c, 0xa5dd984d, 0x989ac446,
+    0xaff00647, 0xf64e4045, 0xc1248244, 0x4432cd41, 0x73580f40,
+    0x2ae64942, 0x1d8c8b43, 0x5068f154, 0x67023355, 0x3ebc7557,
+    0x09d6b756, 0x8cc0f853, 0xbbaa3a52, 0xe2147c50, 0xd57ebe51,
+    0xe839e25a, 0xdf53205b, 0x86ed6659, 0xb187a458, 0x3491eb5d,
+    0x03fb295c, 0x5a456f5e, 0x6d2fad5f, 0x801b35e1, 0xb771f7e0,
+    0xeecfb1e2, 0xd9a573e3, 0x5cb33ce6, 0x6bd9fee7, 0x3267b8e5,
+    0x050d7ae4, 0x384a26ef, 0x0f20e4ee, 0x569ea2ec, 0x61f460ed,
+    0xe4e22fe8, 0xd388ede9, 0x8a36abeb, 0xbd5c69ea, 0xf0b813fd,
+    0xc7d2d1fc, 0x9e6c97fe, 0xa90655ff, 0x2c101afa, 0x1b7ad8fb,
+    0x42c49ef9, 0x75ae5cf8, 0x48e900f3, 0x7f83c2f2, 0x263d84f0,
+    0x115746f1, 0x944109f4, 0xa32bcbf5, 0xfa958df7, 0xcdff4ff6,
+    0x605d78d9, 0x5737bad8, 0x0e89fcda, 0x39e33edb, 0xbcf571de,
+    0x8b9fb3df, 0xd221f5dd, 0xe54b37dc, 0xd80c6bd7, 0xef66a9d6,
+    0xb6d8efd4, 0x81b22dd5, 0x04a462d0, 0x33cea0d1, 0x6a70e6d3,
+    0x5d1a24d2, 0x10fe5ec5, 0x27949cc4, 0x7e2adac6, 0x494018c7,
+    0xcc5657c2, 0xfb3c95c3, 0xa282d3c1, 0x95e811c0, 0xa8af4dcb,
+    0x9fc58fca, 0xc67bc9c8, 0xf1110bc9, 0x740744cc, 0x436d86cd,
+    0x1ad3c0cf, 0x2db902ce, 0x4096af91, 0x77fc6d90, 0x2e422b92,
+    0x1928e993, 0x9c3ea696, 0xab546497, 0xf2ea2295, 0xc580e094,
+    0xf8c7bc9f, 0xcfad7e9e, 0x9613389c, 0xa179fa9d, 0x246fb598,
+    0x13057799, 0x4abb319b, 0x7dd1f39a, 0x3035898d, 0x075f4b8c,
+    0x5ee10d8e, 0x698bcf8f, 0xec9d808a, 0xdbf7428b, 0x82490489,
+    0xb523c688, 0x88649a83, 0xbf0e5882, 0xe6b01e80, 0xd1dadc81,
+    0x54cc9384, 0x63a65185, 0x3a181787, 0x0d72d586, 0xa0d0e2a9,
+    0x97ba20a8, 0xce0466aa, 0xf96ea4ab, 0x7c78ebae, 0x4b1229af,
+    0x12ac6fad, 0x25c6adac, 0x1881f1a7, 0x2feb33a6, 0x765575a4,
+    0x413fb7a5, 0xc429f8a0, 0xf3433aa1, 0xaafd7ca3, 0x9d97bea2,
+    0xd073c4b5, 0xe71906b4, 0xbea740b6, 0x89cd82b7, 0x0cdbcdb2,
+    0x3bb10fb3, 0x620f49b1, 0x55658bb0, 0x6822d7bb, 0x5f4815ba,
+    0x06f653b8, 0x319c91b9, 0xb48adebc, 0x83e01cbd, 0xda5e5abf,
+    0xed3498be},
+   {0x00000000, 0x6567bcb8, 0x8bc809aa, 0xeeafb512, 0x5797628f,
+    0x32f0de37, 0xdc5f6b25, 0xb938d79d, 0xef28b4c5, 0x8a4f087d,
+    0x64e0bd6f, 0x018701d7, 0xb8bfd64a, 0xddd86af2, 0x3377dfe0,
+    0x56106358, 0x9f571950, 0xfa30a5e8, 0x149f10fa, 0x71f8ac42,
+    0xc8c07bdf, 0xada7c767, 0x43087275, 0x266fcecd, 0x707fad95,
+    0x1518112d, 0xfbb7a43f, 0x9ed01887, 0x27e8cf1a, 0x428f73a2,
+    0xac20c6b0, 0xc9477a08, 0x3eaf32a0, 0x5bc88e18, 0xb5673b0a,
+    0xd00087b2, 0x6938502f, 0x0c5fec97, 0xe2f05985, 0x8797e53d,
+    0xd1878665, 0xb4e03add, 0x5a4f8fcf, 0x3f283377, 0x8610e4ea,
+    0xe3775852, 0x0dd8ed40, 0x68bf51f8, 0xa1f82bf0, 0xc49f9748,
+    0x2a30225a, 0x4f579ee2, 0xf66f497f, 0x9308f5c7, 0x7da740d5,
+    0x18c0fc6d, 0x4ed09f35, 0x2bb7238d, 0xc518969f, 0xa07f2a27,
+    0x1947fdba, 0x7c204102, 0x928ff410, 0xf7e848a8, 0x3d58149b,
+    0x583fa823, 0xb6901d31, 0xd3f7a189, 0x6acf7614, 0x0fa8caac,
+    0xe1077fbe, 0x8460c306, 0xd270a05e, 0xb7171ce6, 0x59b8a9f4,
+    0x3cdf154c, 0x85e7c2d1, 0xe0807e69, 0x0e2fcb7b, 0x6b4877c3,
+    0xa20f0dcb, 0xc768b173, 0x29c70461, 0x4ca0b8d9, 0xf5986f44,
+    0x90ffd3fc, 0x7e5066ee, 0x1b37da56, 0x4d27b90e, 0x284005b6,
+    0xc6efb0a4, 0xa3880c1c, 0x1ab0db81, 0x7fd76739, 0x9178d22b,
+    0xf41f6e93, 0x03f7263b, 0x66909a83, 0x883f2f91, 0xed589329,
+    0x546044b4, 0x3107f80c, 0xdfa84d1e, 0xbacff1a6, 0xecdf92fe,
+    0x89b82e46, 0x67179b54, 0x027027ec, 0xbb48f071, 0xde2f4cc9,
+    0x3080f9db, 0x55e74563, 0x9ca03f6b, 0xf9c783d3, 0x176836c1,
+    0x720f8a79, 0xcb375de4, 0xae50e15c, 0x40ff544e, 0x2598e8f6,
+    0x73888bae, 0x16ef3716, 0xf8408204, 0x9d273ebc, 0x241fe921,
+    0x41785599, 0xafd7e08b, 0xcab05c33, 0x3bb659ed, 0x5ed1e555,
+    0xb07e5047, 0xd519ecff, 0x6c213b62, 0x094687da, 0xe7e932c8,
+    0x828e8e70, 0xd49eed28, 0xb1f95190, 0x5f56e482, 0x3a31583a,
+    0x83098fa7, 0xe66e331f, 0x08c1860d, 0x6da63ab5, 0xa4e140bd,
+    0xc186fc05, 0x2f294917, 0x4a4ef5af, 0xf3762232, 0x96119e8a,
+    0x78be2b98, 0x1dd99720, 0x4bc9f478, 0x2eae48c0, 0xc001fdd2,
+    0xa566416a, 0x1c5e96f7, 0x79392a4f, 0x97969f5d, 0xf2f123e5,
+    0x05196b4d, 0x607ed7f5, 0x8ed162e7, 0xebb6de5f, 0x528e09c2,
+    0x37e9b57a, 0xd9460068, 0xbc21bcd0, 0xea31df88, 0x8f566330,
+    0x61f9d622, 0x049e6a9a, 0xbda6bd07, 0xd8c101bf, 0x366eb4ad,
+    0x53090815, 0x9a4e721d, 0xff29cea5, 0x11867bb7, 0x74e1c70f,
+    0xcdd91092, 0xa8beac2a, 0x46111938, 0x2376a580, 0x7566c6d8,
+    0x10017a60, 0xfeaecf72, 0x9bc973ca, 0x22f1a457, 0x479618ef,
+    0xa939adfd, 0xcc5e1145, 0x06ee4d76, 0x6389f1ce, 0x8d2644dc,
+    0xe841f864, 0x51792ff9, 0x341e9341, 0xdab12653, 0xbfd69aeb,
+    0xe9c6f9b3, 0x8ca1450b, 0x620ef019, 0x07694ca1, 0xbe519b3c,
+    0xdb362784, 0x35999296, 0x50fe2e2e, 0x99b95426, 0xfcdee89e,
+    0x12715d8c, 0x7716e134, 0xce2e36a9, 0xab498a11, 0x45e63f03,
+    0x208183bb, 0x7691e0e3, 0x13f65c5b, 0xfd59e949, 0x983e55f1,
+    0x2106826c, 0x44613ed4, 0xaace8bc6, 0xcfa9377e, 0x38417fd6,
+    0x5d26c36e, 0xb389767c, 0xd6eecac4, 0x6fd61d59, 0x0ab1a1e1,
+    0xe41e14f3, 0x8179a84b, 0xd769cb13, 0xb20e77ab, 0x5ca1c2b9,
+    0x39c67e01, 0x80fea99c, 0xe5991524, 0x0b36a036, 0x6e511c8e,
+    0xa7166686, 0xc271da3e, 0x2cde6f2c, 0x49b9d394, 0xf0810409,
+    0x95e6b8b1, 0x7b490da3, 0x1e2eb11b, 0x483ed243, 0x2d596efb,
+    0xc3f6dbe9, 0xa6916751, 0x1fa9b0cc, 0x7ace0c74, 0x9461b966,
+    0xf10605de}};
+
+#endif
+
+#endif
+
+#if N == 2
+
+#if W == 8
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xae689191, 0x87a02563, 0x29c8b4f2, 0xd4314c87,
+    0x7a59dd16, 0x539169e4, 0xfdf9f875, 0x73139f4f, 0xdd7b0ede,
+    0xf4b3ba2c, 0x5adb2bbd, 0xa722d3c8, 0x094a4259, 0x2082f6ab,
+    0x8eea673a, 0xe6273e9e, 0x484faf0f, 0x61871bfd, 0xcfef8a6c,
+    0x32167219, 0x9c7ee388, 0xb5b6577a, 0x1bdec6eb, 0x9534a1d1,
+    0x3b5c3040, 0x129484b2, 0xbcfc1523, 0x4105ed56, 0xef6d7cc7,
+    0xc6a5c835, 0x68cd59a4, 0x173f7b7d, 0xb957eaec, 0x909f5e1e,
+    0x3ef7cf8f, 0xc30e37fa, 0x6d66a66b, 0x44ae1299, 0xeac68308,
+    0x642ce432, 0xca4475a3, 0xe38cc151, 0x4de450c0, 0xb01da8b5,
+    0x1e753924, 0x37bd8dd6, 0x99d51c47, 0xf11845e3, 0x5f70d472,
+    0x76b86080, 0xd8d0f111, 0x25290964, 0x8b4198f5, 0xa2892c07,
+    0x0ce1bd96, 0x820bdaac, 0x2c634b3d, 0x05abffcf, 0xabc36e5e,
+    0x563a962b, 0xf85207ba, 0xd19ab348, 0x7ff222d9, 0x2e7ef6fa,
+    0x8016676b, 0xa9ded399, 0x07b64208, 0xfa4fba7d, 0x54272bec,
+    0x7def9f1e, 0xd3870e8f, 0x5d6d69b5, 0xf305f824, 0xdacd4cd6,
+    0x74a5dd47, 0x895c2532, 0x2734b4a3, 0x0efc0051, 0xa09491c0,
+    0xc859c864, 0x663159f5, 0x4ff9ed07, 0xe1917c96, 0x1c6884e3,
+    0xb2001572, 0x9bc8a180, 0x35a03011, 0xbb4a572b, 0x1522c6ba,
+    0x3cea7248, 0x9282e3d9, 0x6f7b1bac, 0xc1138a3d, 0xe8db3ecf,
+    0x46b3af5e, 0x39418d87, 0x97291c16, 0xbee1a8e4, 0x10893975,
+    0xed70c100, 0x43185091, 0x6ad0e463, 0xc4b875f2, 0x4a5212c8,
+    0xe43a8359, 0xcdf237ab, 0x639aa63a, 0x9e635e4f, 0x300bcfde,
+    0x19c37b2c, 0xb7abeabd, 0xdf66b319, 0x710e2288, 0x58c6967a,
+    0xf6ae07eb, 0x0b57ff9e, 0xa53f6e0f, 0x8cf7dafd, 0x229f4b6c,
+    0xac752c56, 0x021dbdc7, 0x2bd50935, 0x85bd98a4, 0x784460d1,
+    0xd62cf140, 0xffe445b2, 0x518cd423, 0x5cfdedf4, 0xf2957c65,
+    0xdb5dc897, 0x75355906, 0x88cca173, 0x26a430e2, 0x0f6c8410,
+    0xa1041581, 0x2fee72bb, 0x8186e32a, 0xa84e57d8, 0x0626c649,
+    0xfbdf3e3c, 0x55b7afad, 0x7c7f1b5f, 0xd2178ace, 0xbadad36a,
+    0x14b242fb, 0x3d7af609, 0x93126798, 0x6eeb9fed, 0xc0830e7c,
+    0xe94bba8e, 0x47232b1f, 0xc9c94c25, 0x67a1ddb4, 0x4e696946,
+    0xe001f8d7, 0x1df800a2, 0xb3909133, 0x9a5825c1, 0x3430b450,
+    0x4bc29689, 0xe5aa0718, 0xcc62b3ea, 0x620a227b, 0x9ff3da0e,
+    0x319b4b9f, 0x1853ff6d, 0xb63b6efc, 0x38d109c6, 0x96b99857,
+    0xbf712ca5, 0x1119bd34, 0xece04541, 0x4288d4d0, 0x6b406022,
+    0xc528f1b3, 0xade5a817, 0x038d3986, 0x2a458d74, 0x842d1ce5,
+    0x79d4e490, 0xd7bc7501, 0xfe74c1f3, 0x501c5062, 0xdef63758,
+    0x709ea6c9, 0x5956123b, 0xf73e83aa, 0x0ac77bdf, 0xa4afea4e,
+    0x8d675ebc, 0x230fcf2d, 0x72831b0e, 0xdceb8a9f, 0xf5233e6d,
+    0x5b4baffc, 0xa6b25789, 0x08dac618, 0x211272ea, 0x8f7ae37b,
+    0x01908441, 0xaff815d0, 0x8630a122, 0x285830b3, 0xd5a1c8c6,
+    0x7bc95957, 0x5201eda5, 0xfc697c34, 0x94a42590, 0x3accb401,
+    0x130400f3, 0xbd6c9162, 0x40956917, 0xeefdf886, 0xc7354c74,
+    0x695ddde5, 0xe7b7badf, 0x49df2b4e, 0x60179fbc, 0xce7f0e2d,
+    0x3386f658, 0x9dee67c9, 0xb426d33b, 0x1a4e42aa, 0x65bc6073,
+    0xcbd4f1e2, 0xe21c4510, 0x4c74d481, 0xb18d2cf4, 0x1fe5bd65,
+    0x362d0997, 0x98459806, 0x16afff3c, 0xb8c76ead, 0x910fda5f,
+    0x3f674bce, 0xc29eb3bb, 0x6cf6222a, 0x453e96d8, 0xeb560749,
+    0x839b5eed, 0x2df3cf7c, 0x043b7b8e, 0xaa53ea1f, 0x57aa126a,
+    0xf9c283fb, 0xd00a3709, 0x7e62a698, 0xf088c1a2, 0x5ee05033,
+    0x7728e4c1, 0xd9407550, 0x24b98d25, 0x8ad11cb4, 0xa319a846,
+    0x0d7139d7},
+   {0x00000000, 0xb9fbdbe8, 0xa886b191, 0x117d6a79, 0x8a7c6563,
+    0x3387be8b, 0x22fad4f2, 0x9b010f1a, 0xcf89cc87, 0x7672176f,
+    0x670f7d16, 0xdef4a6fe, 0x45f5a9e4, 0xfc0e720c, 0xed731875,
+    0x5488c39d, 0x44629f4f, 0xfd9944a7, 0xece42ede, 0x551ff536,
+    0xce1efa2c, 0x77e521c4, 0x66984bbd, 0xdf639055, 0x8beb53c8,
+    0x32108820, 0x236de259, 0x9a9639b1, 0x019736ab, 0xb86ced43,
+    0xa911873a, 0x10ea5cd2, 0x88c53e9e, 0x313ee576, 0x20438f0f,
+    0x99b854e7, 0x02b95bfd, 0xbb428015, 0xaa3fea6c, 0x13c43184,
+    0x474cf219, 0xfeb729f1, 0xefca4388, 0x56319860, 0xcd30977a,
+    0x74cb4c92, 0x65b626eb, 0xdc4dfd03, 0xcca7a1d1, 0x755c7a39,
+    0x64211040, 0xdddacba8, 0x46dbc4b2, 0xff201f5a, 0xee5d7523,
+    0x57a6aecb, 0x032e6d56, 0xbad5b6be, 0xaba8dcc7, 0x1253072f,
+    0x89520835, 0x30a9d3dd, 0x21d4b9a4, 0x982f624c, 0xcafb7b7d,
+    0x7300a095, 0x627dcaec, 0xdb861104, 0x40871e1e, 0xf97cc5f6,
+    0xe801af8f, 0x51fa7467, 0x0572b7fa, 0xbc896c12, 0xadf4066b,
+    0x140fdd83, 0x8f0ed299, 0x36f50971, 0x27886308, 0x9e73b8e0,
+    0x8e99e432, 0x37623fda, 0x261f55a3, 0x9fe48e4b, 0x04e58151,
+    0xbd1e5ab9, 0xac6330c0, 0x1598eb28, 0x411028b5, 0xf8ebf35d,
+    0xe9969924, 0x506d42cc, 0xcb6c4dd6, 0x7297963e, 0x63eafc47,
+    0xda1127af, 0x423e45e3, 0xfbc59e0b, 0xeab8f472, 0x53432f9a,
+    0xc8422080, 0x71b9fb68, 0x60c49111, 0xd93f4af9, 0x8db78964,
+    0x344c528c, 0x253138f5, 0x9ccae31d, 0x07cbec07, 0xbe3037ef,
+    0xaf4d5d96, 0x16b6867e, 0x065cdaac, 0xbfa70144, 0xaeda6b3d,
+    0x1721b0d5, 0x8c20bfcf, 0x35db6427, 0x24a60e5e, 0x9d5dd5b6,
+    0xc9d5162b, 0x702ecdc3, 0x6153a7ba, 0xd8a87c52, 0x43a97348,
+    0xfa52a8a0, 0xeb2fc2d9, 0x52d41931, 0x4e87f0bb, 0xf77c2b53,
+    0xe601412a, 0x5ffa9ac2, 0xc4fb95d8, 0x7d004e30, 0x6c7d2449,
+    0xd586ffa1, 0x810e3c3c, 0x38f5e7d4, 0x29888dad, 0x90735645,
+    0x0b72595f, 0xb28982b7, 0xa3f4e8ce, 0x1a0f3326, 0x0ae56ff4,
+    0xb31eb41c, 0xa263de65, 0x1b98058d, 0x80990a97, 0x3962d17f,
+    0x281fbb06, 0x91e460ee, 0xc56ca373, 0x7c97789b, 0x6dea12e2,
+    0xd411c90a, 0x4f10c610, 0xf6eb1df8, 0xe7967781, 0x5e6dac69,
+    0xc642ce25, 0x7fb915cd, 0x6ec47fb4, 0xd73fa45c, 0x4c3eab46,
+    0xf5c570ae, 0xe4b81ad7, 0x5d43c13f, 0x09cb02a2, 0xb030d94a,
+    0xa14db333, 0x18b668db, 0x83b767c1, 0x3a4cbc29, 0x2b31d650,
+    0x92ca0db8, 0x8220516a, 0x3bdb8a82, 0x2aa6e0fb, 0x935d3b13,
+    0x085c3409, 0xb1a7efe1, 0xa0da8598, 0x19215e70, 0x4da99ded,
+    0xf4524605, 0xe52f2c7c, 0x5cd4f794, 0xc7d5f88e, 0x7e2e2366,
+    0x6f53491f, 0xd6a892f7, 0x847c8bc6, 0x3d87502e, 0x2cfa3a57,
+    0x9501e1bf, 0x0e00eea5, 0xb7fb354d, 0xa6865f34, 0x1f7d84dc,
+    0x4bf54741, 0xf20e9ca9, 0xe373f6d0, 0x5a882d38, 0xc1892222,
+    0x7872f9ca, 0x690f93b3, 0xd0f4485b, 0xc01e1489, 0x79e5cf61,
+    0x6898a518, 0xd1637ef0, 0x4a6271ea, 0xf399aa02, 0xe2e4c07b,
+    0x5b1f1b93, 0x0f97d80e, 0xb66c03e6, 0xa711699f, 0x1eeab277,
+    0x85ebbd6d, 0x3c106685, 0x2d6d0cfc, 0x9496d714, 0x0cb9b558,
+    0xb5426eb0, 0xa43f04c9, 0x1dc4df21, 0x86c5d03b, 0x3f3e0bd3,
+    0x2e4361aa, 0x97b8ba42, 0xc33079df, 0x7acba237, 0x6bb6c84e,
+    0xd24d13a6, 0x494c1cbc, 0xf0b7c754, 0xe1caad2d, 0x583176c5,
+    0x48db2a17, 0xf120f1ff, 0xe05d9b86, 0x59a6406e, 0xc2a74f74,
+    0x7b5c949c, 0x6a21fee5, 0xd3da250d, 0x8752e690, 0x3ea93d78,
+    0x2fd45701, 0x962f8ce9, 0x0d2e83f3, 0xb4d5581b, 0xa5a83262,
+    0x1c53e98a},
+   {0x00000000, 0x9d0fe176, 0xe16ec4ad, 0x7c6125db, 0x19ac8f1b,
+    0x84a36e6d, 0xf8c24bb6, 0x65cdaac0, 0x33591e36, 0xae56ff40,
+    0xd237da9b, 0x4f383bed, 0x2af5912d, 0xb7fa705b, 0xcb9b5580,
+    0x5694b4f6, 0x66b23c6c, 0xfbbddd1a, 0x87dcf8c1, 0x1ad319b7,
+    0x7f1eb377, 0xe2115201, 0x9e7077da, 0x037f96ac, 0x55eb225a,
+    0xc8e4c32c, 0xb485e6f7, 0x298a0781, 0x4c47ad41, 0xd1484c37,
+    0xad2969ec, 0x3026889a, 0xcd6478d8, 0x506b99ae, 0x2c0abc75,
+    0xb1055d03, 0xd4c8f7c3, 0x49c716b5, 0x35a6336e, 0xa8a9d218,
+    0xfe3d66ee, 0x63328798, 0x1f53a243, 0x825c4335, 0xe791e9f5,
+    0x7a9e0883, 0x06ff2d58, 0x9bf0cc2e, 0xabd644b4, 0x36d9a5c2,
+    0x4ab88019, 0xd7b7616f, 0xb27acbaf, 0x2f752ad9, 0x53140f02,
+    0xce1bee74, 0x988f5a82, 0x0580bbf4, 0x79e19e2f, 0xe4ee7f59,
+    0x8123d599, 0x1c2c34ef, 0x604d1134, 0xfd42f042, 0x41b9f7f1,
+    0xdcb61687, 0xa0d7335c, 0x3dd8d22a, 0x581578ea, 0xc51a999c,
+    0xb97bbc47, 0x24745d31, 0x72e0e9c7, 0xefef08b1, 0x938e2d6a,
+    0x0e81cc1c, 0x6b4c66dc, 0xf64387aa, 0x8a22a271, 0x172d4307,
+    0x270bcb9d, 0xba042aeb, 0xc6650f30, 0x5b6aee46, 0x3ea74486,
+    0xa3a8a5f0, 0xdfc9802b, 0x42c6615d, 0x1452d5ab, 0x895d34dd,
+    0xf53c1106, 0x6833f070, 0x0dfe5ab0, 0x90f1bbc6, 0xec909e1d,
+    0x719f7f6b, 0x8cdd8f29, 0x11d26e5f, 0x6db34b84, 0xf0bcaaf2,
+    0x95710032, 0x087ee144, 0x741fc49f, 0xe91025e9, 0xbf84911f,
+    0x228b7069, 0x5eea55b2, 0xc3e5b4c4, 0xa6281e04, 0x3b27ff72,
+    0x4746daa9, 0xda493bdf, 0xea6fb345, 0x77605233, 0x0b0177e8,
+    0x960e969e, 0xf3c33c5e, 0x6eccdd28, 0x12adf8f3, 0x8fa21985,
+    0xd936ad73, 0x44394c05, 0x385869de, 0xa55788a8, 0xc09a2268,
+    0x5d95c31e, 0x21f4e6c5, 0xbcfb07b3, 0x8373efe2, 0x1e7c0e94,
+    0x621d2b4f, 0xff12ca39, 0x9adf60f9, 0x07d0818f, 0x7bb1a454,
+    0xe6be4522, 0xb02af1d4, 0x2d2510a2, 0x51443579, 0xcc4bd40f,
+    0xa9867ecf, 0x34899fb9, 0x48e8ba62, 0xd5e75b14, 0xe5c1d38e,
+    0x78ce32f8, 0x04af1723, 0x99a0f655, 0xfc6d5c95, 0x6162bde3,
+    0x1d039838, 0x800c794e, 0xd698cdb8, 0x4b972cce, 0x37f60915,
+    0xaaf9e863, 0xcf3442a3, 0x523ba3d5, 0x2e5a860e, 0xb3556778,
+    0x4e17973a, 0xd318764c, 0xaf795397, 0x3276b2e1, 0x57bb1821,
+    0xcab4f957, 0xb6d5dc8c, 0x2bda3dfa, 0x7d4e890c, 0xe041687a,
+    0x9c204da1, 0x012facd7, 0x64e20617, 0xf9ede761, 0x858cc2ba,
+    0x188323cc, 0x28a5ab56, 0xb5aa4a20, 0xc9cb6ffb, 0x54c48e8d,
+    0x3109244d, 0xac06c53b, 0xd067e0e0, 0x4d680196, 0x1bfcb560,
+    0x86f35416, 0xfa9271cd, 0x679d90bb, 0x02503a7b, 0x9f5fdb0d,
+    0xe33efed6, 0x7e311fa0, 0xc2ca1813, 0x5fc5f965, 0x23a4dcbe,
+    0xbeab3dc8, 0xdb669708, 0x4669767e, 0x3a0853a5, 0xa707b2d3,
+    0xf1930625, 0x6c9ce753, 0x10fdc288, 0x8df223fe, 0xe83f893e,
+    0x75306848, 0x09514d93, 0x945eace5, 0xa478247f, 0x3977c509,
+    0x4516e0d2, 0xd81901a4, 0xbdd4ab64, 0x20db4a12, 0x5cba6fc9,
+    0xc1b58ebf, 0x97213a49, 0x0a2edb3f, 0x764ffee4, 0xeb401f92,
+    0x8e8db552, 0x13825424, 0x6fe371ff, 0xf2ec9089, 0x0fae60cb,
+    0x92a181bd, 0xeec0a466, 0x73cf4510, 0x1602efd0, 0x8b0d0ea6,
+    0xf76c2b7d, 0x6a63ca0b, 0x3cf77efd, 0xa1f89f8b, 0xdd99ba50,
+    0x40965b26, 0x255bf1e6, 0xb8541090, 0xc435354b, 0x593ad43d,
+    0x691c5ca7, 0xf413bdd1, 0x8872980a, 0x157d797c, 0x70b0d3bc,
+    0xedbf32ca, 0x91de1711, 0x0cd1f667, 0x5a454291, 0xc74aa3e7,
+    0xbb2b863c, 0x2624674a, 0x43e9cd8a, 0xdee62cfc, 0xa2870927,
+    0x3f88e851},
+   {0x00000000, 0xdd96d985, 0x605cb54b, 0xbdca6cce, 0xc0b96a96,
+    0x1d2fb313, 0xa0e5dfdd, 0x7d730658, 0x5a03d36d, 0x87950ae8,
+    0x3a5f6626, 0xe7c9bfa3, 0x9abab9fb, 0x472c607e, 0xfae60cb0,
+    0x2770d535, 0xb407a6da, 0x69917f5f, 0xd45b1391, 0x09cdca14,
+    0x74becc4c, 0xa92815c9, 0x14e27907, 0xc974a082, 0xee0475b7,
+    0x3392ac32, 0x8e58c0fc, 0x53ce1979, 0x2ebd1f21, 0xf32bc6a4,
+    0x4ee1aa6a, 0x937773ef, 0xb37e4bf5, 0x6ee89270, 0xd322febe,
+    0x0eb4273b, 0x73c72163, 0xae51f8e6, 0x139b9428, 0xce0d4dad,
+    0xe97d9898, 0x34eb411d, 0x89212dd3, 0x54b7f456, 0x29c4f20e,
+    0xf4522b8b, 0x49984745, 0x940e9ec0, 0x0779ed2f, 0xdaef34aa,
+    0x67255864, 0xbab381e1, 0xc7c087b9, 0x1a565e3c, 0xa79c32f2,
+    0x7a0aeb77, 0x5d7a3e42, 0x80ece7c7, 0x3d268b09, 0xe0b0528c,
+    0x9dc354d4, 0x40558d51, 0xfd9fe19f, 0x2009381a, 0xbd8d91ab,
+    0x601b482e, 0xddd124e0, 0x0047fd65, 0x7d34fb3d, 0xa0a222b8,
+    0x1d684e76, 0xc0fe97f3, 0xe78e42c6, 0x3a189b43, 0x87d2f78d,
+    0x5a442e08, 0x27372850, 0xfaa1f1d5, 0x476b9d1b, 0x9afd449e,
+    0x098a3771, 0xd41ceef4, 0x69d6823a, 0xb4405bbf, 0xc9335de7,
+    0x14a58462, 0xa96fe8ac, 0x74f93129, 0x5389e41c, 0x8e1f3d99,
+    0x33d55157, 0xee4388d2, 0x93308e8a, 0x4ea6570f, 0xf36c3bc1,
+    0x2efae244, 0x0ef3da5e, 0xd36503db, 0x6eaf6f15, 0xb339b690,
+    0xce4ab0c8, 0x13dc694d, 0xae160583, 0x7380dc06, 0x54f00933,
+    0x8966d0b6, 0x34acbc78, 0xe93a65fd, 0x944963a5, 0x49dfba20,
+    0xf415d6ee, 0x29830f6b, 0xbaf47c84, 0x6762a501, 0xdaa8c9cf,
+    0x073e104a, 0x7a4d1612, 0xa7dbcf97, 0x1a11a359, 0xc7877adc,
+    0xe0f7afe9, 0x3d61766c, 0x80ab1aa2, 0x5d3dc327, 0x204ec57f,
+    0xfdd81cfa, 0x40127034, 0x9d84a9b1, 0xa06a2517, 0x7dfcfc92,
+    0xc036905c, 0x1da049d9, 0x60d34f81, 0xbd459604, 0x008ffaca,
+    0xdd19234f, 0xfa69f67a, 0x27ff2fff, 0x9a354331, 0x47a39ab4,
+    0x3ad09cec, 0xe7464569, 0x5a8c29a7, 0x871af022, 0x146d83cd,
+    0xc9fb5a48, 0x74313686, 0xa9a7ef03, 0xd4d4e95b, 0x094230de,
+    0xb4885c10, 0x691e8595, 0x4e6e50a0, 0x93f88925, 0x2e32e5eb,
+    0xf3a43c6e, 0x8ed73a36, 0x5341e3b3, 0xee8b8f7d, 0x331d56f8,
+    0x13146ee2, 0xce82b767, 0x7348dba9, 0xaede022c, 0xd3ad0474,
+    0x0e3bddf1, 0xb3f1b13f, 0x6e6768ba, 0x4917bd8f, 0x9481640a,
+    0x294b08c4, 0xf4ddd141, 0x89aed719, 0x54380e9c, 0xe9f26252,
+    0x3464bbd7, 0xa713c838, 0x7a8511bd, 0xc74f7d73, 0x1ad9a4f6,
+    0x67aaa2ae, 0xba3c7b2b, 0x07f617e5, 0xda60ce60, 0xfd101b55,
+    0x2086c2d0, 0x9d4cae1e, 0x40da779b, 0x3da971c3, 0xe03fa846,
+    0x5df5c488, 0x80631d0d, 0x1de7b4bc, 0xc0716d39, 0x7dbb01f7,
+    0xa02dd872, 0xdd5ede2a, 0x00c807af, 0xbd026b61, 0x6094b2e4,
+    0x47e467d1, 0x9a72be54, 0x27b8d29a, 0xfa2e0b1f, 0x875d0d47,
+    0x5acbd4c2, 0xe701b80c, 0x3a976189, 0xa9e01266, 0x7476cbe3,
+    0xc9bca72d, 0x142a7ea8, 0x695978f0, 0xb4cfa175, 0x0905cdbb,
+    0xd493143e, 0xf3e3c10b, 0x2e75188e, 0x93bf7440, 0x4e29adc5,
+    0x335aab9d, 0xeecc7218, 0x53061ed6, 0x8e90c753, 0xae99ff49,
+    0x730f26cc, 0xcec54a02, 0x13539387, 0x6e2095df, 0xb3b64c5a,
+    0x0e7c2094, 0xd3eaf911, 0xf49a2c24, 0x290cf5a1, 0x94c6996f,
+    0x495040ea, 0x342346b2, 0xe9b59f37, 0x547ff3f9, 0x89e92a7c,
+    0x1a9e5993, 0xc7088016, 0x7ac2ecd8, 0xa754355d, 0xda273305,
+    0x07b1ea80, 0xba7b864e, 0x67ed5fcb, 0x409d8afe, 0x9d0b537b,
+    0x20c13fb5, 0xfd57e630, 0x8024e068, 0x5db239ed, 0xe0785523,
+    0x3dee8ca6},
+   {0x00000000, 0x9ba54c6f, 0xec3b9e9f, 0x779ed2f0, 0x03063b7f,
+    0x98a37710, 0xef3da5e0, 0x7498e98f, 0x060c76fe, 0x9da93a91,
+    0xea37e861, 0x7192a40e, 0x050a4d81, 0x9eaf01ee, 0xe931d31e,
+    0x72949f71, 0x0c18edfc, 0x97bda193, 0xe0237363, 0x7b863f0c,
+    0x0f1ed683, 0x94bb9aec, 0xe325481c, 0x78800473, 0x0a149b02,
+    0x91b1d76d, 0xe62f059d, 0x7d8a49f2, 0x0912a07d, 0x92b7ec12,
+    0xe5293ee2, 0x7e8c728d, 0x1831dbf8, 0x83949797, 0xf40a4567,
+    0x6faf0908, 0x1b37e087, 0x8092ace8, 0xf70c7e18, 0x6ca93277,
+    0x1e3dad06, 0x8598e169, 0xf2063399, 0x69a37ff6, 0x1d3b9679,
+    0x869eda16, 0xf10008e6, 0x6aa54489, 0x14293604, 0x8f8c7a6b,
+    0xf812a89b, 0x63b7e4f4, 0x172f0d7b, 0x8c8a4114, 0xfb1493e4,
+    0x60b1df8b, 0x122540fa, 0x89800c95, 0xfe1ede65, 0x65bb920a,
+    0x11237b85, 0x8a8637ea, 0xfd18e51a, 0x66bda975, 0x3063b7f0,
+    0xabc6fb9f, 0xdc58296f, 0x47fd6500, 0x33658c8f, 0xa8c0c0e0,
+    0xdf5e1210, 0x44fb5e7f, 0x366fc10e, 0xadca8d61, 0xda545f91,
+    0x41f113fe, 0x3569fa71, 0xaeccb61e, 0xd95264ee, 0x42f72881,
+    0x3c7b5a0c, 0xa7de1663, 0xd040c493, 0x4be588fc, 0x3f7d6173,
+    0xa4d82d1c, 0xd346ffec, 0x48e3b383, 0x3a772cf2, 0xa1d2609d,
+    0xd64cb26d, 0x4de9fe02, 0x3971178d, 0xa2d45be2, 0xd54a8912,
+    0x4eefc57d, 0x28526c08, 0xb3f72067, 0xc469f297, 0x5fccbef8,
+    0x2b545777, 0xb0f11b18, 0xc76fc9e8, 0x5cca8587, 0x2e5e1af6,
+    0xb5fb5699, 0xc2658469, 0x59c0c806, 0x2d582189, 0xb6fd6de6,
+    0xc163bf16, 0x5ac6f379, 0x244a81f4, 0xbfefcd9b, 0xc8711f6b,
+    0x53d45304, 0x274cba8b, 0xbce9f6e4, 0xcb772414, 0x50d2687b,
+    0x2246f70a, 0xb9e3bb65, 0xce7d6995, 0x55d825fa, 0x2140cc75,
+    0xbae5801a, 0xcd7b52ea, 0x56de1e85, 0x60c76fe0, 0xfb62238f,
+    0x8cfcf17f, 0x1759bd10, 0x63c1549f, 0xf86418f0, 0x8ffaca00,
+    0x145f866f, 0x66cb191e, 0xfd6e5571, 0x8af08781, 0x1155cbee,
+    0x65cd2261, 0xfe686e0e, 0x89f6bcfe, 0x1253f091, 0x6cdf821c,
+    0xf77ace73, 0x80e41c83, 0x1b4150ec, 0x6fd9b963, 0xf47cf50c,
+    0x83e227fc, 0x18476b93, 0x6ad3f4e2, 0xf176b88d, 0x86e86a7d,
+    0x1d4d2612, 0x69d5cf9d, 0xf27083f2, 0x85ee5102, 0x1e4b1d6d,
+    0x78f6b418, 0xe353f877, 0x94cd2a87, 0x0f6866e8, 0x7bf08f67,
+    0xe055c308, 0x97cb11f8, 0x0c6e5d97, 0x7efac2e6, 0xe55f8e89,
+    0x92c15c79, 0x09641016, 0x7dfcf999, 0xe659b5f6, 0x91c76706,
+    0x0a622b69, 0x74ee59e4, 0xef4b158b, 0x98d5c77b, 0x03708b14,
+    0x77e8629b, 0xec4d2ef4, 0x9bd3fc04, 0x0076b06b, 0x72e22f1a,
+    0xe9476375, 0x9ed9b185, 0x057cfdea, 0x71e41465, 0xea41580a,
+    0x9ddf8afa, 0x067ac695, 0x50a4d810, 0xcb01947f, 0xbc9f468f,
+    0x273a0ae0, 0x53a2e36f, 0xc807af00, 0xbf997df0, 0x243c319f,
+    0x56a8aeee, 0xcd0de281, 0xba933071, 0x21367c1e, 0x55ae9591,
+    0xce0bd9fe, 0xb9950b0e, 0x22304761, 0x5cbc35ec, 0xc7197983,
+    0xb087ab73, 0x2b22e71c, 0x5fba0e93, 0xc41f42fc, 0xb381900c,
+    0x2824dc63, 0x5ab04312, 0xc1150f7d, 0xb68bdd8d, 0x2d2e91e2,
+    0x59b6786d, 0xc2133402, 0xb58de6f2, 0x2e28aa9d, 0x489503e8,
+    0xd3304f87, 0xa4ae9d77, 0x3f0bd118, 0x4b933897, 0xd03674f8,
+    0xa7a8a608, 0x3c0dea67, 0x4e997516, 0xd53c3979, 0xa2a2eb89,
+    0x3907a7e6, 0x4d9f4e69, 0xd63a0206, 0xa1a4d0f6, 0x3a019c99,
+    0x448dee14, 0xdf28a27b, 0xa8b6708b, 0x33133ce4, 0x478bd56b,
+    0xdc2e9904, 0xabb04bf4, 0x3015079b, 0x428198ea, 0xd924d485,
+    0xaeba0675, 0x351f4a1a, 0x4187a395, 0xda22effa, 0xadbc3d0a,
+    0x36197165},
+   {0x00000000, 0xc18edfc0, 0x586cb9c1, 0x99e26601, 0xb0d97382,
+    0x7157ac42, 0xe8b5ca43, 0x293b1583, 0xbac3e145, 0x7b4d3e85,
+    0xe2af5884, 0x23218744, 0x0a1a92c7, 0xcb944d07, 0x52762b06,
+    0x93f8f4c6, 0xaef6c4cb, 0x6f781b0b, 0xf69a7d0a, 0x3714a2ca,
+    0x1e2fb749, 0xdfa16889, 0x46430e88, 0x87cdd148, 0x1435258e,
+    0xd5bbfa4e, 0x4c599c4f, 0x8dd7438f, 0xa4ec560c, 0x656289cc,
+    0xfc80efcd, 0x3d0e300d, 0x869c8fd7, 0x47125017, 0xdef03616,
+    0x1f7ee9d6, 0x3645fc55, 0xf7cb2395, 0x6e294594, 0xafa79a54,
+    0x3c5f6e92, 0xfdd1b152, 0x6433d753, 0xa5bd0893, 0x8c861d10,
+    0x4d08c2d0, 0xd4eaa4d1, 0x15647b11, 0x286a4b1c, 0xe9e494dc,
+    0x7006f2dd, 0xb1882d1d, 0x98b3389e, 0x593de75e, 0xc0df815f,
+    0x01515e9f, 0x92a9aa59, 0x53277599, 0xcac51398, 0x0b4bcc58,
+    0x2270d9db, 0xe3fe061b, 0x7a1c601a, 0xbb92bfda, 0xd64819ef,
+    0x17c6c62f, 0x8e24a02e, 0x4faa7fee, 0x66916a6d, 0xa71fb5ad,
+    0x3efdd3ac, 0xff730c6c, 0x6c8bf8aa, 0xad05276a, 0x34e7416b,
+    0xf5699eab, 0xdc528b28, 0x1ddc54e8, 0x843e32e9, 0x45b0ed29,
+    0x78bedd24, 0xb93002e4, 0x20d264e5, 0xe15cbb25, 0xc867aea6,
+    0x09e97166, 0x900b1767, 0x5185c8a7, 0xc27d3c61, 0x03f3e3a1,
+    0x9a1185a0, 0x5b9f5a60, 0x72a44fe3, 0xb32a9023, 0x2ac8f622,
+    0xeb4629e2, 0x50d49638, 0x915a49f8, 0x08b82ff9, 0xc936f039,
+    0xe00de5ba, 0x21833a7a, 0xb8615c7b, 0x79ef83bb, 0xea17777d,
+    0x2b99a8bd, 0xb27bcebc, 0x73f5117c, 0x5ace04ff, 0x9b40db3f,
+    0x02a2bd3e, 0xc32c62fe, 0xfe2252f3, 0x3fac8d33, 0xa64eeb32,
+    0x67c034f2, 0x4efb2171, 0x8f75feb1, 0x169798b0, 0xd7194770,
+    0x44e1b3b6, 0x856f6c76, 0x1c8d0a77, 0xdd03d5b7, 0xf438c034,
+    0x35b61ff4, 0xac5479f5, 0x6ddaa635, 0x77e1359f, 0xb66fea5f,
+    0x2f8d8c5e, 0xee03539e, 0xc738461d, 0x06b699dd, 0x9f54ffdc,
+    0x5eda201c, 0xcd22d4da, 0x0cac0b1a, 0x954e6d1b, 0x54c0b2db,
+    0x7dfba758, 0xbc757898, 0x25971e99, 0xe419c159, 0xd917f154,
+    0x18992e94, 0x817b4895, 0x40f59755, 0x69ce82d6, 0xa8405d16,
+    0x31a23b17, 0xf02ce4d7, 0x63d41011, 0xa25acfd1, 0x3bb8a9d0,
+    0xfa367610, 0xd30d6393, 0x1283bc53, 0x8b61da52, 0x4aef0592,
+    0xf17dba48, 0x30f36588, 0xa9110389, 0x689fdc49, 0x41a4c9ca,
+    0x802a160a, 0x19c8700b, 0xd846afcb, 0x4bbe5b0d, 0x8a3084cd,
+    0x13d2e2cc, 0xd25c3d0c, 0xfb67288f, 0x3ae9f74f, 0xa30b914e,
+    0x62854e8e, 0x5f8b7e83, 0x9e05a143, 0x07e7c742, 0xc6691882,
+    0xef520d01, 0x2edcd2c1, 0xb73eb4c0, 0x76b06b00, 0xe5489fc6,
+    0x24c64006, 0xbd242607, 0x7caaf9c7, 0x5591ec44, 0x941f3384,
+    0x0dfd5585, 0xcc738a45, 0xa1a92c70, 0x6027f3b0, 0xf9c595b1,
+    0x384b4a71, 0x11705ff2, 0xd0fe8032, 0x491ce633, 0x889239f3,
+    0x1b6acd35, 0xdae412f5, 0x430674f4, 0x8288ab34, 0xabb3beb7,
+    0x6a3d6177, 0xf3df0776, 0x3251d8b6, 0x0f5fe8bb, 0xced1377b,
+    0x5733517a, 0x96bd8eba, 0xbf869b39, 0x7e0844f9, 0xe7ea22f8,
+    0x2664fd38, 0xb59c09fe, 0x7412d63e, 0xedf0b03f, 0x2c7e6fff,
+    0x05457a7c, 0xc4cba5bc, 0x5d29c3bd, 0x9ca71c7d, 0x2735a3a7,
+    0xe6bb7c67, 0x7f591a66, 0xbed7c5a6, 0x97ecd025, 0x56620fe5,
+    0xcf8069e4, 0x0e0eb624, 0x9df642e2, 0x5c789d22, 0xc59afb23,
+    0x041424e3, 0x2d2f3160, 0xeca1eea0, 0x754388a1, 0xb4cd5761,
+    0x89c3676c, 0x484db8ac, 0xd1afdead, 0x1021016d, 0x391a14ee,
+    0xf894cb2e, 0x6176ad2f, 0xa0f872ef, 0x33008629, 0xf28e59e9,
+    0x6b6c3fe8, 0xaae2e028, 0x83d9f5ab, 0x42572a6b, 0xdbb54c6a,
+    0x1a3b93aa},
+   {0x00000000, 0xefc26b3e, 0x04f5d03d, 0xeb37bb03, 0x09eba07a,
+    0xe629cb44, 0x0d1e7047, 0xe2dc1b79, 0x13d740f4, 0xfc152bca,
+    0x172290c9, 0xf8e0fbf7, 0x1a3ce08e, 0xf5fe8bb0, 0x1ec930b3,
+    0xf10b5b8d, 0x27ae81e8, 0xc86cead6, 0x235b51d5, 0xcc993aeb,
+    0x2e452192, 0xc1874aac, 0x2ab0f1af, 0xc5729a91, 0x3479c11c,
+    0xdbbbaa22, 0x308c1121, 0xdf4e7a1f, 0x3d926166, 0xd2500a58,
+    0x3967b15b, 0xd6a5da65, 0x4f5d03d0, 0xa09f68ee, 0x4ba8d3ed,
+    0xa46ab8d3, 0x46b6a3aa, 0xa974c894, 0x42437397, 0xad8118a9,
+    0x5c8a4324, 0xb348281a, 0x587f9319, 0xb7bdf827, 0x5561e35e,
+    0xbaa38860, 0x51943363, 0xbe56585d, 0x68f38238, 0x8731e906,
+    0x6c065205, 0x83c4393b, 0x61182242, 0x8eda497c, 0x65edf27f,
+    0x8a2f9941, 0x7b24c2cc, 0x94e6a9f2, 0x7fd112f1, 0x901379cf,
+    0x72cf62b6, 0x9d0d0988, 0x763ab28b, 0x99f8d9b5, 0x9eba07a0,
+    0x71786c9e, 0x9a4fd79d, 0x758dbca3, 0x9751a7da, 0x7893cce4,
+    0x93a477e7, 0x7c661cd9, 0x8d6d4754, 0x62af2c6a, 0x89989769,
+    0x665afc57, 0x8486e72e, 0x6b448c10, 0x80733713, 0x6fb15c2d,
+    0xb9148648, 0x56d6ed76, 0xbde15675, 0x52233d4b, 0xb0ff2632,
+    0x5f3d4d0c, 0xb40af60f, 0x5bc89d31, 0xaac3c6bc, 0x4501ad82,
+    0xae361681, 0x41f47dbf, 0xa32866c6, 0x4cea0df8, 0xa7ddb6fb,
+    0x481fddc5, 0xd1e70470, 0x3e256f4e, 0xd512d44d, 0x3ad0bf73,
+    0xd80ca40a, 0x37cecf34, 0xdcf97437, 0x333b1f09, 0xc2304484,
+    0x2df22fba, 0xc6c594b9, 0x2907ff87, 0xcbdbe4fe, 0x24198fc0,
+    0xcf2e34c3, 0x20ec5ffd, 0xf6498598, 0x198beea6, 0xf2bc55a5,
+    0x1d7e3e9b, 0xffa225e2, 0x10604edc, 0xfb57f5df, 0x14959ee1,
+    0xe59ec56c, 0x0a5cae52, 0xe16b1551, 0x0ea97e6f, 0xec756516,
+    0x03b70e28, 0xe880b52b, 0x0742de15, 0xe6050901, 0x09c7623f,
+    0xe2f0d93c, 0x0d32b202, 0xefeea97b, 0x002cc245, 0xeb1b7946,
+    0x04d91278, 0xf5d249f5, 0x1a1022cb, 0xf12799c8, 0x1ee5f2f6,
+    0xfc39e98f, 0x13fb82b1, 0xf8cc39b2, 0x170e528c, 0xc1ab88e9,
+    0x2e69e3d7, 0xc55e58d4, 0x2a9c33ea, 0xc8402893, 0x278243ad,
+    0xccb5f8ae, 0x23779390, 0xd27cc81d, 0x3dbea323, 0xd6891820,
+    0x394b731e, 0xdb976867, 0x34550359, 0xdf62b85a, 0x30a0d364,
+    0xa9580ad1, 0x469a61ef, 0xadaddaec, 0x426fb1d2, 0xa0b3aaab,
+    0x4f71c195, 0xa4467a96, 0x4b8411a8, 0xba8f4a25, 0x554d211b,
+    0xbe7a9a18, 0x51b8f126, 0xb364ea5f, 0x5ca68161, 0xb7913a62,
+    0x5853515c, 0x8ef68b39, 0x6134e007, 0x8a035b04, 0x65c1303a,
+    0x871d2b43, 0x68df407d, 0x83e8fb7e, 0x6c2a9040, 0x9d21cbcd,
+    0x72e3a0f3, 0x99d41bf0, 0x761670ce, 0x94ca6bb7, 0x7b080089,
+    0x903fbb8a, 0x7ffdd0b4, 0x78bf0ea1, 0x977d659f, 0x7c4ade9c,
+    0x9388b5a2, 0x7154aedb, 0x9e96c5e5, 0x75a17ee6, 0x9a6315d8,
+    0x6b684e55, 0x84aa256b, 0x6f9d9e68, 0x805ff556, 0x6283ee2f,
+    0x8d418511, 0x66763e12, 0x89b4552c, 0x5f118f49, 0xb0d3e477,
+    0x5be45f74, 0xb426344a, 0x56fa2f33, 0xb938440d, 0x520fff0e,
+    0xbdcd9430, 0x4cc6cfbd, 0xa304a483, 0x48331f80, 0xa7f174be,
+    0x452d6fc7, 0xaaef04f9, 0x41d8bffa, 0xae1ad4c4, 0x37e20d71,
+    0xd820664f, 0x3317dd4c, 0xdcd5b672, 0x3e09ad0b, 0xd1cbc635,
+    0x3afc7d36, 0xd53e1608, 0x24354d85, 0xcbf726bb, 0x20c09db8,
+    0xcf02f686, 0x2ddeedff, 0xc21c86c1, 0x292b3dc2, 0xc6e956fc,
+    0x104c8c99, 0xff8ee7a7, 0x14b95ca4, 0xfb7b379a, 0x19a72ce3,
+    0xf66547dd, 0x1d52fcde, 0xf29097e0, 0x039bcc6d, 0xec59a753,
+    0x076e1c50, 0xe8ac776e, 0x0a706c17, 0xe5b20729, 0x0e85bc2a,
+    0xe147d714},
+   {0x00000000, 0x177b1443, 0x2ef62886, 0x398d3cc5, 0x5dec510c,
+    0x4a97454f, 0x731a798a, 0x64616dc9, 0xbbd8a218, 0xaca3b65b,
+    0x952e8a9e, 0x82559edd, 0xe634f314, 0xf14fe757, 0xc8c2db92,
+    0xdfb9cfd1, 0xacc04271, 0xbbbb5632, 0x82366af7, 0x954d7eb4,
+    0xf12c137d, 0xe657073e, 0xdfda3bfb, 0xc8a12fb8, 0x1718e069,
+    0x0063f42a, 0x39eec8ef, 0x2e95dcac, 0x4af4b165, 0x5d8fa526,
+    0x640299e3, 0x73798da0, 0x82f182a3, 0x958a96e0, 0xac07aa25,
+    0xbb7cbe66, 0xdf1dd3af, 0xc866c7ec, 0xf1ebfb29, 0xe690ef6a,
+    0x392920bb, 0x2e5234f8, 0x17df083d, 0x00a41c7e, 0x64c571b7,
+    0x73be65f4, 0x4a335931, 0x5d484d72, 0x2e31c0d2, 0x394ad491,
+    0x00c7e854, 0x17bcfc17, 0x73dd91de, 0x64a6859d, 0x5d2bb958,
+    0x4a50ad1b, 0x95e962ca, 0x82927689, 0xbb1f4a4c, 0xac645e0f,
+    0xc80533c6, 0xdf7e2785, 0xe6f31b40, 0xf1880f03, 0xde920307,
+    0xc9e91744, 0xf0642b81, 0xe71f3fc2, 0x837e520b, 0x94054648,
+    0xad887a8d, 0xbaf36ece, 0x654aa11f, 0x7231b55c, 0x4bbc8999,
+    0x5cc79dda, 0x38a6f013, 0x2fdde450, 0x1650d895, 0x012bccd6,
+    0x72524176, 0x65295535, 0x5ca469f0, 0x4bdf7db3, 0x2fbe107a,
+    0x38c50439, 0x014838fc, 0x16332cbf, 0xc98ae36e, 0xdef1f72d,
+    0xe77ccbe8, 0xf007dfab, 0x9466b262, 0x831da621, 0xba909ae4,
+    0xadeb8ea7, 0x5c6381a4, 0x4b1895e7, 0x7295a922, 0x65eebd61,
+    0x018fd0a8, 0x16f4c4eb, 0x2f79f82e, 0x3802ec6d, 0xe7bb23bc,
+    0xf0c037ff, 0xc94d0b3a, 0xde361f79, 0xba5772b0, 0xad2c66f3,
+    0x94a15a36, 0x83da4e75, 0xf0a3c3d5, 0xe7d8d796, 0xde55eb53,
+    0xc92eff10, 0xad4f92d9, 0xba34869a, 0x83b9ba5f, 0x94c2ae1c,
+    0x4b7b61cd, 0x5c00758e, 0x658d494b, 0x72f65d08, 0x169730c1,
+    0x01ec2482, 0x38611847, 0x2f1a0c04, 0x6655004f, 0x712e140c,
+    0x48a328c9, 0x5fd83c8a, 0x3bb95143, 0x2cc24500, 0x154f79c5,
+    0x02346d86, 0xdd8da257, 0xcaf6b614, 0xf37b8ad1, 0xe4009e92,
+    0x8061f35b, 0x971ae718, 0xae97dbdd, 0xb9eccf9e, 0xca95423e,
+    0xddee567d, 0xe4636ab8, 0xf3187efb, 0x97791332, 0x80020771,
+    0xb98f3bb4, 0xaef42ff7, 0x714de026, 0x6636f465, 0x5fbbc8a0,
+    0x48c0dce3, 0x2ca1b12a, 0x3bdaa569, 0x025799ac, 0x152c8def,
+    0xe4a482ec, 0xf3df96af, 0xca52aa6a, 0xdd29be29, 0xb948d3e0,
+    0xae33c7a3, 0x97befb66, 0x80c5ef25, 0x5f7c20f4, 0x480734b7,
+    0x718a0872, 0x66f11c31, 0x029071f8, 0x15eb65bb, 0x2c66597e,
+    0x3b1d4d3d, 0x4864c09d, 0x5f1fd4de, 0x6692e81b, 0x71e9fc58,
+    0x15889191, 0x02f385d2, 0x3b7eb917, 0x2c05ad54, 0xf3bc6285,
+    0xe4c776c6, 0xdd4a4a03, 0xca315e40, 0xae503389, 0xb92b27ca,
+    0x80a61b0f, 0x97dd0f4c, 0xb8c70348, 0xafbc170b, 0x96312bce,
+    0x814a3f8d, 0xe52b5244, 0xf2504607, 0xcbdd7ac2, 0xdca66e81,
+    0x031fa150, 0x1464b513, 0x2de989d6, 0x3a929d95, 0x5ef3f05c,
+    0x4988e41f, 0x7005d8da, 0x677ecc99, 0x14074139, 0x037c557a,
+    0x3af169bf, 0x2d8a7dfc, 0x49eb1035, 0x5e900476, 0x671d38b3,
+    0x70662cf0, 0xafdfe321, 0xb8a4f762, 0x8129cba7, 0x9652dfe4,
+    0xf233b22d, 0xe548a66e, 0xdcc59aab, 0xcbbe8ee8, 0x3a3681eb,
+    0x2d4d95a8, 0x14c0a96d, 0x03bbbd2e, 0x67dad0e7, 0x70a1c4a4,
+    0x492cf861, 0x5e57ec22, 0x81ee23f3, 0x969537b0, 0xaf180b75,
+    0xb8631f36, 0xdc0272ff, 0xcb7966bc, 0xf2f45a79, 0xe58f4e3a,
+    0x96f6c39a, 0x818dd7d9, 0xb800eb1c, 0xaf7bff5f, 0xcb1a9296,
+    0xdc6186d5, 0xe5ecba10, 0xf297ae53, 0x2d2e6182, 0x3a5575c1,
+    0x03d84904, 0x14a35d47, 0x70c2308e, 0x67b924cd, 0x5e341808,
+    0x494f0c4b}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x0000000000000000, 0x43147b1700000000, 0x8628f62e00000000,
+    0xc53c8d3900000000, 0x0c51ec5d00000000, 0x4f45974a00000000,
+    0x8a791a7300000000, 0xc96d616400000000, 0x18a2d8bb00000000,
+    0x5bb6a3ac00000000, 0x9e8a2e9500000000, 0xdd9e558200000000,
+    0x14f334e600000000, 0x57e74ff100000000, 0x92dbc2c800000000,
+    0xd1cfb9df00000000, 0x7142c0ac00000000, 0x3256bbbb00000000,
+    0xf76a368200000000, 0xb47e4d9500000000, 0x7d132cf100000000,
+    0x3e0757e600000000, 0xfb3bdadf00000000, 0xb82fa1c800000000,
+    0x69e0181700000000, 0x2af4630000000000, 0xefc8ee3900000000,
+    0xacdc952e00000000, 0x65b1f44a00000000, 0x26a58f5d00000000,
+    0xe399026400000000, 0xa08d797300000000, 0xa382f18200000000,
+    0xe0968a9500000000, 0x25aa07ac00000000, 0x66be7cbb00000000,
+    0xafd31ddf00000000, 0xecc766c800000000, 0x29fbebf100000000,
+    0x6aef90e600000000, 0xbb20293900000000, 0xf834522e00000000,
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+    0x1191c46000000000, 0xf94a3fd900000000, 0x6489b78d00000000,
+    0x8c524c3400000000, 0xf538312500000000, 0x1de3ca9c00000000,
+    0x07eccb0700000000, 0xef3730be00000000, 0x965d4daf00000000,
+    0x7e86b61600000000, 0xacda5c0600000000, 0x4401a7bf00000000,
+    0x3d6bdaae00000000, 0xd5b0211700000000, 0xcfbf208c00000000,
+    0x2764db3500000000, 0x5e0ea62400000000, 0xb6d55d9d00000000,
+    0x2b16d5c900000000, 0xc3cd2e7000000000, 0xbaa7536100000000,
+    0x527ca8d800000000, 0x4873a94300000000, 0xa0a852fa00000000,
+    0xd9c22feb00000000, 0x3119d45200000000, 0xbbf0874e00000000,
+    0x532b7cf700000000, 0x2a4101e600000000, 0xc29afa5f00000000,
+    0xd895fbc400000000, 0x304e007d00000000, 0x49247d6c00000000,
+    0xa1ff86d500000000, 0x3c3c0e8100000000, 0xd4e7f53800000000,
+    0xad8d882900000000, 0x4556739000000000, 0x5f59720b00000000,
+    0xb78289b200000000, 0xcee8f4a300000000, 0x26330f1a00000000,
+    0xf46fe50a00000000, 0x1cb41eb300000000, 0x65de63a200000000,
+    0x8d05981b00000000, 0x970a998000000000, 0x7fd1623900000000,
+    0x06bb1f2800000000, 0xee60e49100000000, 0x73a36cc500000000,
+    0x9b78977c00000000, 0xe212ea6d00000000, 0x0ac911d400000000,
+    0x10c6104f00000000, 0xf81debf600000000, 0x817796e700000000,
+    0x69ac6d5e00000000, 0x25ce42c600000000, 0xcd15b97f00000000,
+    0xb47fc46e00000000, 0x5ca43fd700000000, 0x46ab3e4c00000000,
+    0xae70c5f500000000, 0xd71ab8e400000000, 0x3fc1435d00000000,
+    0xa202cb0900000000, 0x4ad930b000000000, 0x33b34da100000000,
+    0xdb68b61800000000, 0xc167b78300000000, 0x29bc4c3a00000000,
+    0x50d6312b00000000, 0xb80dca9200000000, 0x6a51208200000000,
+    0x828adb3b00000000, 0xfbe0a62a00000000, 0x133b5d9300000000,
+    0x09345c0800000000, 0xe1efa7b100000000, 0x9885daa000000000,
+    0x705e211900000000, 0xed9da94d00000000, 0x054652f400000000,
+    0x7c2c2fe500000000, 0x94f7d45c00000000, 0x8ef8d5c700000000,
+    0x66232e7e00000000, 0x1f49536f00000000, 0xf792a8d600000000,
+    0xc68b7c8400000000, 0x2e50873d00000000, 0x573afa2c00000000,
+    0xbfe1019500000000, 0xa5ee000e00000000, 0x4d35fbb700000000,
+    0x345f86a600000000, 0xdc847d1f00000000, 0x4147f54b00000000,
+    0xa99c0ef200000000, 0xd0f673e300000000, 0x382d885a00000000,
+    0x222289c100000000, 0xcaf9727800000000, 0xb3930f6900000000,
+    0x5b48f4d000000000, 0x89141ec000000000, 0x61cfe57900000000,
+    0x18a5986800000000, 0xf07e63d100000000, 0xea71624a00000000,
+    0x02aa99f300000000, 0x7bc0e4e200000000, 0x931b1f5b00000000,
+    0x0ed8970f00000000, 0xe6036cb600000000, 0x9f6911a700000000,
+    0x77b2ea1e00000000, 0x6dbdeb8500000000, 0x8566103c00000000,
+    0xfc0c6d2d00000000, 0x14d7969400000000, 0x58b5b90c00000000,
+    0xb06e42b500000000, 0xc9043fa400000000, 0x21dfc41d00000000,
+    0x3bd0c58600000000, 0xd30b3e3f00000000, 0xaa61432e00000000,
+    0x42bab89700000000, 0xdf7930c300000000, 0x37a2cb7a00000000,
+    0x4ec8b66b00000000, 0xa6134dd200000000, 0xbc1c4c4900000000,
+    0x54c7b7f000000000, 0x2dadcae100000000, 0xc576315800000000,
+    0x172adb4800000000, 0xfff120f100000000, 0x869b5de000000000,
+    0x6e40a65900000000, 0x744fa7c200000000, 0x9c945c7b00000000,
+    0xe5fe216a00000000, 0x0d25dad300000000, 0x90e6528700000000,
+    0x783da93e00000000, 0x0157d42f00000000, 0xe98c2f9600000000,
+    0xf3832e0d00000000, 0x1b58d5b400000000, 0x6232a8a500000000,
+    0x8ae9531c00000000},
+   {0x0000000000000000, 0x919168ae00000000, 0x6325a08700000000,
+    0xf2b4c82900000000, 0x874c31d400000000, 0x16dd597a00000000,
+    0xe469915300000000, 0x75f8f9fd00000000, 0x4f9f137300000000,
+    0xde0e7bdd00000000, 0x2cbab3f400000000, 0xbd2bdb5a00000000,
+    0xc8d322a700000000, 0x59424a0900000000, 0xabf6822000000000,
+    0x3a67ea8e00000000, 0x9e3e27e600000000, 0x0faf4f4800000000,
+    0xfd1b876100000000, 0x6c8aefcf00000000, 0x1972163200000000,
+    0x88e37e9c00000000, 0x7a57b6b500000000, 0xebc6de1b00000000,
+    0xd1a1349500000000, 0x40305c3b00000000, 0xb284941200000000,
+    0x2315fcbc00000000, 0x56ed054100000000, 0xc77c6def00000000,
+    0x35c8a5c600000000, 0xa459cd6800000000, 0x7d7b3f1700000000,
+    0xecea57b900000000, 0x1e5e9f9000000000, 0x8fcff73e00000000,
+    0xfa370ec300000000, 0x6ba6666d00000000, 0x9912ae4400000000,
+    0x0883c6ea00000000, 0x32e42c6400000000, 0xa37544ca00000000,
+    0x51c18ce300000000, 0xc050e44d00000000, 0xb5a81db000000000,
+    0x2439751e00000000, 0xd68dbd3700000000, 0x471cd59900000000,
+    0xe34518f100000000, 0x72d4705f00000000, 0x8060b87600000000,
+    0x11f1d0d800000000, 0x6409292500000000, 0xf598418b00000000,
+    0x072c89a200000000, 0x96bde10c00000000, 0xacda0b8200000000,
+    0x3d4b632c00000000, 0xcfffab0500000000, 0x5e6ec3ab00000000,
+    0x2b963a5600000000, 0xba0752f800000000, 0x48b39ad100000000,
+    0xd922f27f00000000, 0xfaf67e2e00000000, 0x6b67168000000000,
+    0x99d3dea900000000, 0x0842b60700000000, 0x7dba4ffa00000000,
+    0xec2b275400000000, 0x1e9fef7d00000000, 0x8f0e87d300000000,
+    0xb5696d5d00000000, 0x24f805f300000000, 0xd64ccdda00000000,
+    0x47dda57400000000, 0x32255c8900000000, 0xa3b4342700000000,
+    0x5100fc0e00000000, 0xc09194a000000000, 0x64c859c800000000,
+    0xf559316600000000, 0x07edf94f00000000, 0x967c91e100000000,
+    0xe384681c00000000, 0x721500b200000000, 0x80a1c89b00000000,
+    0x1130a03500000000, 0x2b574abb00000000, 0xbac6221500000000,
+    0x4872ea3c00000000, 0xd9e3829200000000, 0xac1b7b6f00000000,
+    0x3d8a13c100000000, 0xcf3edbe800000000, 0x5eafb34600000000,
+    0x878d413900000000, 0x161c299700000000, 0xe4a8e1be00000000,
+    0x7539891000000000, 0x00c170ed00000000, 0x9150184300000000,
+    0x63e4d06a00000000, 0xf275b8c400000000, 0xc812524a00000000,
+    0x59833ae400000000, 0xab37f2cd00000000, 0x3aa69a6300000000,
+    0x4f5e639e00000000, 0xdecf0b3000000000, 0x2c7bc31900000000,
+    0xbdeaabb700000000, 0x19b366df00000000, 0x88220e7100000000,
+    0x7a96c65800000000, 0xeb07aef600000000, 0x9eff570b00000000,
+    0x0f6e3fa500000000, 0xfddaf78c00000000, 0x6c4b9f2200000000,
+    0x562c75ac00000000, 0xc7bd1d0200000000, 0x3509d52b00000000,
+    0xa498bd8500000000, 0xd160447800000000, 0x40f12cd600000000,
+    0xb245e4ff00000000, 0x23d48c5100000000, 0xf4edfd5c00000000,
+    0x657c95f200000000, 0x97c85ddb00000000, 0x0659357500000000,
+    0x73a1cc8800000000, 0xe230a42600000000, 0x10846c0f00000000,
+    0x811504a100000000, 0xbb72ee2f00000000, 0x2ae3868100000000,
+    0xd8574ea800000000, 0x49c6260600000000, 0x3c3edffb00000000,
+    0xadafb75500000000, 0x5f1b7f7c00000000, 0xce8a17d200000000,
+    0x6ad3daba00000000, 0xfb42b21400000000, 0x09f67a3d00000000,
+    0x9867129300000000, 0xed9feb6e00000000, 0x7c0e83c000000000,
+    0x8eba4be900000000, 0x1f2b234700000000, 0x254cc9c900000000,
+    0xb4dda16700000000, 0x4669694e00000000, 0xd7f801e000000000,
+    0xa200f81d00000000, 0x339190b300000000, 0xc125589a00000000,
+    0x50b4303400000000, 0x8996c24b00000000, 0x1807aae500000000,
+    0xeab362cc00000000, 0x7b220a6200000000, 0x0edaf39f00000000,
+    0x9f4b9b3100000000, 0x6dff531800000000, 0xfc6e3bb600000000,
+    0xc609d13800000000, 0x5798b99600000000, 0xa52c71bf00000000,
+    0x34bd191100000000, 0x4145e0ec00000000, 0xd0d4884200000000,
+    0x2260406b00000000, 0xb3f128c500000000, 0x17a8e5ad00000000,
+    0x86398d0300000000, 0x748d452a00000000, 0xe51c2d8400000000,
+    0x90e4d47900000000, 0x0175bcd700000000, 0xf3c174fe00000000,
+    0x62501c5000000000, 0x5837f6de00000000, 0xc9a69e7000000000,
+    0x3b12565900000000, 0xaa833ef700000000, 0xdf7bc70a00000000,
+    0x4eeaafa400000000, 0xbc5e678d00000000, 0x2dcf0f2300000000,
+    0x0e1b837200000000, 0x9f8aebdc00000000, 0x6d3e23f500000000,
+    0xfcaf4b5b00000000, 0x8957b2a600000000, 0x18c6da0800000000,
+    0xea72122100000000, 0x7be37a8f00000000, 0x4184900100000000,
+    0xd015f8af00000000, 0x22a1308600000000, 0xb330582800000000,
+    0xc6c8a1d500000000, 0x5759c97b00000000, 0xa5ed015200000000,
+    0x347c69fc00000000, 0x9025a49400000000, 0x01b4cc3a00000000,
+    0xf300041300000000, 0x62916cbd00000000, 0x1769954000000000,
+    0x86f8fdee00000000, 0x744c35c700000000, 0xe5dd5d6900000000,
+    0xdfbab7e700000000, 0x4e2bdf4900000000, 0xbc9f176000000000,
+    0x2d0e7fce00000000, 0x58f6863300000000, 0xc967ee9d00000000,
+    0x3bd326b400000000, 0xaa424e1a00000000, 0x7360bc6500000000,
+    0xe2f1d4cb00000000, 0x10451ce200000000, 0x81d4744c00000000,
+    0xf42c8db100000000, 0x65bde51f00000000, 0x97092d3600000000,
+    0x0698459800000000, 0x3cffaf1600000000, 0xad6ec7b800000000,
+    0x5fda0f9100000000, 0xce4b673f00000000, 0xbbb39ec200000000,
+    0x2a22f66c00000000, 0xd8963e4500000000, 0x490756eb00000000,
+    0xed5e9b8300000000, 0x7ccff32d00000000, 0x8e7b3b0400000000,
+    0x1fea53aa00000000, 0x6a12aa5700000000, 0xfb83c2f900000000,
+    0x09370ad000000000, 0x98a6627e00000000, 0xa2c188f000000000,
+    0x3350e05e00000000, 0xc1e4287700000000, 0x507540d900000000,
+    0x258db92400000000, 0xb41cd18a00000000, 0x46a819a300000000,
+    0xd739710d00000000}};
+
+#else /* W == 4 */
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xccaa009e, 0x4225077d, 0x8e8f07e3, 0x844a0efa,
+    0x48e00e64, 0xc66f0987, 0x0ac50919, 0xd3e51bb5, 0x1f4f1b2b,
+    0x91c01cc8, 0x5d6a1c56, 0x57af154f, 0x9b0515d1, 0x158a1232,
+    0xd92012ac, 0x7cbb312b, 0xb01131b5, 0x3e9e3656, 0xf23436c8,
+    0xf8f13fd1, 0x345b3f4f, 0xbad438ac, 0x767e3832, 0xaf5e2a9e,
+    0x63f42a00, 0xed7b2de3, 0x21d12d7d, 0x2b142464, 0xe7be24fa,
+    0x69312319, 0xa59b2387, 0xf9766256, 0x35dc62c8, 0xbb53652b,
+    0x77f965b5, 0x7d3c6cac, 0xb1966c32, 0x3f196bd1, 0xf3b36b4f,
+    0x2a9379e3, 0xe639797d, 0x68b67e9e, 0xa41c7e00, 0xaed97719,
+    0x62737787, 0xecfc7064, 0x205670fa, 0x85cd537d, 0x496753e3,
+    0xc7e85400, 0x0b42549e, 0x01875d87, 0xcd2d5d19, 0x43a25afa,
+    0x8f085a64, 0x562848c8, 0x9a824856, 0x140d4fb5, 0xd8a74f2b,
+    0xd2624632, 0x1ec846ac, 0x9047414f, 0x5ced41d1, 0x299dc2ed,
+    0xe537c273, 0x6bb8c590, 0xa712c50e, 0xadd7cc17, 0x617dcc89,
+    0xeff2cb6a, 0x2358cbf4, 0xfa78d958, 0x36d2d9c6, 0xb85dde25,
+    0x74f7debb, 0x7e32d7a2, 0xb298d73c, 0x3c17d0df, 0xf0bdd041,
+    0x5526f3c6, 0x998cf358, 0x1703f4bb, 0xdba9f425, 0xd16cfd3c,
+    0x1dc6fda2, 0x9349fa41, 0x5fe3fadf, 0x86c3e873, 0x4a69e8ed,
+    0xc4e6ef0e, 0x084cef90, 0x0289e689, 0xce23e617, 0x40ace1f4,
+    0x8c06e16a, 0xd0eba0bb, 0x1c41a025, 0x92cea7c6, 0x5e64a758,
+    0x54a1ae41, 0x980baedf, 0x1684a93c, 0xda2ea9a2, 0x030ebb0e,
+    0xcfa4bb90, 0x412bbc73, 0x8d81bced, 0x8744b5f4, 0x4beeb56a,
+    0xc561b289, 0x09cbb217, 0xac509190, 0x60fa910e, 0xee7596ed,
+    0x22df9673, 0x281a9f6a, 0xe4b09ff4, 0x6a3f9817, 0xa6959889,
+    0x7fb58a25, 0xb31f8abb, 0x3d908d58, 0xf13a8dc6, 0xfbff84df,
+    0x37558441, 0xb9da83a2, 0x7570833c, 0x533b85da, 0x9f918544,
+    0x111e82a7, 0xddb48239, 0xd7718b20, 0x1bdb8bbe, 0x95548c5d,
+    0x59fe8cc3, 0x80de9e6f, 0x4c749ef1, 0xc2fb9912, 0x0e51998c,
+    0x04949095, 0xc83e900b, 0x46b197e8, 0x8a1b9776, 0x2f80b4f1,
+    0xe32ab46f, 0x6da5b38c, 0xa10fb312, 0xabcaba0b, 0x6760ba95,
+    0xe9efbd76, 0x2545bde8, 0xfc65af44, 0x30cfafda, 0xbe40a839,
+    0x72eaa8a7, 0x782fa1be, 0xb485a120, 0x3a0aa6c3, 0xf6a0a65d,
+    0xaa4de78c, 0x66e7e712, 0xe868e0f1, 0x24c2e06f, 0x2e07e976,
+    0xe2ade9e8, 0x6c22ee0b, 0xa088ee95, 0x79a8fc39, 0xb502fca7,
+    0x3b8dfb44, 0xf727fbda, 0xfde2f2c3, 0x3148f25d, 0xbfc7f5be,
+    0x736df520, 0xd6f6d6a7, 0x1a5cd639, 0x94d3d1da, 0x5879d144,
+    0x52bcd85d, 0x9e16d8c3, 0x1099df20, 0xdc33dfbe, 0x0513cd12,
+    0xc9b9cd8c, 0x4736ca6f, 0x8b9ccaf1, 0x8159c3e8, 0x4df3c376,
+    0xc37cc495, 0x0fd6c40b, 0x7aa64737, 0xb60c47a9, 0x3883404a,
+    0xf42940d4, 0xfeec49cd, 0x32464953, 0xbcc94eb0, 0x70634e2e,
+    0xa9435c82, 0x65e95c1c, 0xeb665bff, 0x27cc5b61, 0x2d095278,
+    0xe1a352e6, 0x6f2c5505, 0xa386559b, 0x061d761c, 0xcab77682,
+    0x44387161, 0x889271ff, 0x825778e6, 0x4efd7878, 0xc0727f9b,
+    0x0cd87f05, 0xd5f86da9, 0x19526d37, 0x97dd6ad4, 0x5b776a4a,
+    0x51b26353, 0x9d1863cd, 0x1397642e, 0xdf3d64b0, 0x83d02561,
+    0x4f7a25ff, 0xc1f5221c, 0x0d5f2282, 0x079a2b9b, 0xcb302b05,
+    0x45bf2ce6, 0x89152c78, 0x50353ed4, 0x9c9f3e4a, 0x121039a9,
+    0xdeba3937, 0xd47f302e, 0x18d530b0, 0x965a3753, 0x5af037cd,
+    0xff6b144a, 0x33c114d4, 0xbd4e1337, 0x71e413a9, 0x7b211ab0,
+    0xb78b1a2e, 0x39041dcd, 0xf5ae1d53, 0x2c8e0fff, 0xe0240f61,
+    0x6eab0882, 0xa201081c, 0xa8c40105, 0x646e019b, 0xeae10678,
+    0x264b06e6},
+   {0x00000000, 0xa6770bb4, 0x979f1129, 0x31e81a9d, 0xf44f2413,
+    0x52382fa7, 0x63d0353a, 0xc5a73e8e, 0x33ef4e67, 0x959845d3,
+    0xa4705f4e, 0x020754fa, 0xc7a06a74, 0x61d761c0, 0x503f7b5d,
+    0xf64870e9, 0x67de9cce, 0xc1a9977a, 0xf0418de7, 0x56368653,
+    0x9391b8dd, 0x35e6b369, 0x040ea9f4, 0xa279a240, 0x5431d2a9,
+    0xf246d91d, 0xc3aec380, 0x65d9c834, 0xa07ef6ba, 0x0609fd0e,
+    0x37e1e793, 0x9196ec27, 0xcfbd399c, 0x69ca3228, 0x582228b5,
+    0xfe552301, 0x3bf21d8f, 0x9d85163b, 0xac6d0ca6, 0x0a1a0712,
+    0xfc5277fb, 0x5a257c4f, 0x6bcd66d2, 0xcdba6d66, 0x081d53e8,
+    0xae6a585c, 0x9f8242c1, 0x39f54975, 0xa863a552, 0x0e14aee6,
+    0x3ffcb47b, 0x998bbfcf, 0x5c2c8141, 0xfa5b8af5, 0xcbb39068,
+    0x6dc49bdc, 0x9b8ceb35, 0x3dfbe081, 0x0c13fa1c, 0xaa64f1a8,
+    0x6fc3cf26, 0xc9b4c492, 0xf85cde0f, 0x5e2bd5bb, 0x440b7579,
+    0xe27c7ecd, 0xd3946450, 0x75e36fe4, 0xb044516a, 0x16335ade,
+    0x27db4043, 0x81ac4bf7, 0x77e43b1e, 0xd19330aa, 0xe07b2a37,
+    0x460c2183, 0x83ab1f0d, 0x25dc14b9, 0x14340e24, 0xb2430590,
+    0x23d5e9b7, 0x85a2e203, 0xb44af89e, 0x123df32a, 0xd79acda4,
+    0x71edc610, 0x4005dc8d, 0xe672d739, 0x103aa7d0, 0xb64dac64,
+    0x87a5b6f9, 0x21d2bd4d, 0xe47583c3, 0x42028877, 0x73ea92ea,
+    0xd59d995e, 0x8bb64ce5, 0x2dc14751, 0x1c295dcc, 0xba5e5678,
+    0x7ff968f6, 0xd98e6342, 0xe86679df, 0x4e11726b, 0xb8590282,
+    0x1e2e0936, 0x2fc613ab, 0x89b1181f, 0x4c162691, 0xea612d25,
+    0xdb8937b8, 0x7dfe3c0c, 0xec68d02b, 0x4a1fdb9f, 0x7bf7c102,
+    0xdd80cab6, 0x1827f438, 0xbe50ff8c, 0x8fb8e511, 0x29cfeea5,
+    0xdf879e4c, 0x79f095f8, 0x48188f65, 0xee6f84d1, 0x2bc8ba5f,
+    0x8dbfb1eb, 0xbc57ab76, 0x1a20a0c2, 0x8816eaf2, 0x2e61e146,
+    0x1f89fbdb, 0xb9fef06f, 0x7c59cee1, 0xda2ec555, 0xebc6dfc8,
+    0x4db1d47c, 0xbbf9a495, 0x1d8eaf21, 0x2c66b5bc, 0x8a11be08,
+    0x4fb68086, 0xe9c18b32, 0xd82991af, 0x7e5e9a1b, 0xefc8763c,
+    0x49bf7d88, 0x78576715, 0xde206ca1, 0x1b87522f, 0xbdf0599b,
+    0x8c184306, 0x2a6f48b2, 0xdc27385b, 0x7a5033ef, 0x4bb82972,
+    0xedcf22c6, 0x28681c48, 0x8e1f17fc, 0xbff70d61, 0x198006d5,
+    0x47abd36e, 0xe1dcd8da, 0xd034c247, 0x7643c9f3, 0xb3e4f77d,
+    0x1593fcc9, 0x247be654, 0x820cede0, 0x74449d09, 0xd23396bd,
+    0xe3db8c20, 0x45ac8794, 0x800bb91a, 0x267cb2ae, 0x1794a833,
+    0xb1e3a387, 0x20754fa0, 0x86024414, 0xb7ea5e89, 0x119d553d,
+    0xd43a6bb3, 0x724d6007, 0x43a57a9a, 0xe5d2712e, 0x139a01c7,
+    0xb5ed0a73, 0x840510ee, 0x22721b5a, 0xe7d525d4, 0x41a22e60,
+    0x704a34fd, 0xd63d3f49, 0xcc1d9f8b, 0x6a6a943f, 0x5b828ea2,
+    0xfdf58516, 0x3852bb98, 0x9e25b02c, 0xafcdaab1, 0x09baa105,
+    0xfff2d1ec, 0x5985da58, 0x686dc0c5, 0xce1acb71, 0x0bbdf5ff,
+    0xadcafe4b, 0x9c22e4d6, 0x3a55ef62, 0xabc30345, 0x0db408f1,
+    0x3c5c126c, 0x9a2b19d8, 0x5f8c2756, 0xf9fb2ce2, 0xc813367f,
+    0x6e643dcb, 0x982c4d22, 0x3e5b4696, 0x0fb35c0b, 0xa9c457bf,
+    0x6c636931, 0xca146285, 0xfbfc7818, 0x5d8b73ac, 0x03a0a617,
+    0xa5d7ada3, 0x943fb73e, 0x3248bc8a, 0xf7ef8204, 0x519889b0,
+    0x6070932d, 0xc6079899, 0x304fe870, 0x9638e3c4, 0xa7d0f959,
+    0x01a7f2ed, 0xc400cc63, 0x6277c7d7, 0x539fdd4a, 0xf5e8d6fe,
+    0x647e3ad9, 0xc209316d, 0xf3e12bf0, 0x55962044, 0x90311eca,
+    0x3646157e, 0x07ae0fe3, 0xa1d90457, 0x579174be, 0xf1e67f0a,
+    0xc00e6597, 0x66796e23, 0xa3de50ad, 0x05a95b19, 0x34414184,
+    0x92364a30},
+   {0x00000000, 0xcb5cd3a5, 0x4dc8a10b, 0x869472ae, 0x9b914216,
+    0x50cd91b3, 0xd659e31d, 0x1d0530b8, 0xec53826d, 0x270f51c8,
+    0xa19b2366, 0x6ac7f0c3, 0x77c2c07b, 0xbc9e13de, 0x3a0a6170,
+    0xf156b2d5, 0x03d6029b, 0xc88ad13e, 0x4e1ea390, 0x85427035,
+    0x9847408d, 0x531b9328, 0xd58fe186, 0x1ed33223, 0xef8580f6,
+    0x24d95353, 0xa24d21fd, 0x6911f258, 0x7414c2e0, 0xbf481145,
+    0x39dc63eb, 0xf280b04e, 0x07ac0536, 0xccf0d693, 0x4a64a43d,
+    0x81387798, 0x9c3d4720, 0x57619485, 0xd1f5e62b, 0x1aa9358e,
+    0xebff875b, 0x20a354fe, 0xa6372650, 0x6d6bf5f5, 0x706ec54d,
+    0xbb3216e8, 0x3da66446, 0xf6fab7e3, 0x047a07ad, 0xcf26d408,
+    0x49b2a6a6, 0x82ee7503, 0x9feb45bb, 0x54b7961e, 0xd223e4b0,
+    0x197f3715, 0xe82985c0, 0x23755665, 0xa5e124cb, 0x6ebdf76e,
+    0x73b8c7d6, 0xb8e41473, 0x3e7066dd, 0xf52cb578, 0x0f580a6c,
+    0xc404d9c9, 0x4290ab67, 0x89cc78c2, 0x94c9487a, 0x5f959bdf,
+    0xd901e971, 0x125d3ad4, 0xe30b8801, 0x28575ba4, 0xaec3290a,
+    0x659ffaaf, 0x789aca17, 0xb3c619b2, 0x35526b1c, 0xfe0eb8b9,
+    0x0c8e08f7, 0xc7d2db52, 0x4146a9fc, 0x8a1a7a59, 0x971f4ae1,
+    0x5c439944, 0xdad7ebea, 0x118b384f, 0xe0dd8a9a, 0x2b81593f,
+    0xad152b91, 0x6649f834, 0x7b4cc88c, 0xb0101b29, 0x36846987,
+    0xfdd8ba22, 0x08f40f5a, 0xc3a8dcff, 0x453cae51, 0x8e607df4,
+    0x93654d4c, 0x58399ee9, 0xdeadec47, 0x15f13fe2, 0xe4a78d37,
+    0x2ffb5e92, 0xa96f2c3c, 0x6233ff99, 0x7f36cf21, 0xb46a1c84,
+    0x32fe6e2a, 0xf9a2bd8f, 0x0b220dc1, 0xc07ede64, 0x46eaacca,
+    0x8db67f6f, 0x90b34fd7, 0x5bef9c72, 0xdd7beedc, 0x16273d79,
+    0xe7718fac, 0x2c2d5c09, 0xaab92ea7, 0x61e5fd02, 0x7ce0cdba,
+    0xb7bc1e1f, 0x31286cb1, 0xfa74bf14, 0x1eb014d8, 0xd5ecc77d,
+    0x5378b5d3, 0x98246676, 0x852156ce, 0x4e7d856b, 0xc8e9f7c5,
+    0x03b52460, 0xf2e396b5, 0x39bf4510, 0xbf2b37be, 0x7477e41b,
+    0x6972d4a3, 0xa22e0706, 0x24ba75a8, 0xefe6a60d, 0x1d661643,
+    0xd63ac5e6, 0x50aeb748, 0x9bf264ed, 0x86f75455, 0x4dab87f0,
+    0xcb3ff55e, 0x006326fb, 0xf135942e, 0x3a69478b, 0xbcfd3525,
+    0x77a1e680, 0x6aa4d638, 0xa1f8059d, 0x276c7733, 0xec30a496,
+    0x191c11ee, 0xd240c24b, 0x54d4b0e5, 0x9f886340, 0x828d53f8,
+    0x49d1805d, 0xcf45f2f3, 0x04192156, 0xf54f9383, 0x3e134026,
+    0xb8873288, 0x73dbe12d, 0x6eded195, 0xa5820230, 0x2316709e,
+    0xe84aa33b, 0x1aca1375, 0xd196c0d0, 0x5702b27e, 0x9c5e61db,
+    0x815b5163, 0x4a0782c6, 0xcc93f068, 0x07cf23cd, 0xf6999118,
+    0x3dc542bd, 0xbb513013, 0x700de3b6, 0x6d08d30e, 0xa65400ab,
+    0x20c07205, 0xeb9ca1a0, 0x11e81eb4, 0xdab4cd11, 0x5c20bfbf,
+    0x977c6c1a, 0x8a795ca2, 0x41258f07, 0xc7b1fda9, 0x0ced2e0c,
+    0xfdbb9cd9, 0x36e74f7c, 0xb0733dd2, 0x7b2fee77, 0x662adecf,
+    0xad760d6a, 0x2be27fc4, 0xe0beac61, 0x123e1c2f, 0xd962cf8a,
+    0x5ff6bd24, 0x94aa6e81, 0x89af5e39, 0x42f38d9c, 0xc467ff32,
+    0x0f3b2c97, 0xfe6d9e42, 0x35314de7, 0xb3a53f49, 0x78f9ecec,
+    0x65fcdc54, 0xaea00ff1, 0x28347d5f, 0xe368aefa, 0x16441b82,
+    0xdd18c827, 0x5b8cba89, 0x90d0692c, 0x8dd55994, 0x46898a31,
+    0xc01df89f, 0x0b412b3a, 0xfa1799ef, 0x314b4a4a, 0xb7df38e4,
+    0x7c83eb41, 0x6186dbf9, 0xaada085c, 0x2c4e7af2, 0xe712a957,
+    0x15921919, 0xdececabc, 0x585ab812, 0x93066bb7, 0x8e035b0f,
+    0x455f88aa, 0xc3cbfa04, 0x089729a1, 0xf9c19b74, 0x329d48d1,
+    0xb4093a7f, 0x7f55e9da, 0x6250d962, 0xa90c0ac7, 0x2f987869,
+    0xe4c4abcc},
+   {0x00000000, 0x3d6029b0, 0x7ac05360, 0x47a07ad0, 0xf580a6c0,
+    0xc8e08f70, 0x8f40f5a0, 0xb220dc10, 0x30704bc1, 0x0d106271,
+    0x4ab018a1, 0x77d03111, 0xc5f0ed01, 0xf890c4b1, 0xbf30be61,
+    0x825097d1, 0x60e09782, 0x5d80be32, 0x1a20c4e2, 0x2740ed52,
+    0x95603142, 0xa80018f2, 0xefa06222, 0xd2c04b92, 0x5090dc43,
+    0x6df0f5f3, 0x2a508f23, 0x1730a693, 0xa5107a83, 0x98705333,
+    0xdfd029e3, 0xe2b00053, 0xc1c12f04, 0xfca106b4, 0xbb017c64,
+    0x866155d4, 0x344189c4, 0x0921a074, 0x4e81daa4, 0x73e1f314,
+    0xf1b164c5, 0xccd14d75, 0x8b7137a5, 0xb6111e15, 0x0431c205,
+    0x3951ebb5, 0x7ef19165, 0x4391b8d5, 0xa121b886, 0x9c419136,
+    0xdbe1ebe6, 0xe681c256, 0x54a11e46, 0x69c137f6, 0x2e614d26,
+    0x13016496, 0x9151f347, 0xac31daf7, 0xeb91a027, 0xd6f18997,
+    0x64d15587, 0x59b17c37, 0x1e1106e7, 0x23712f57, 0x58f35849,
+    0x659371f9, 0x22330b29, 0x1f532299, 0xad73fe89, 0x9013d739,
+    0xd7b3ade9, 0xead38459, 0x68831388, 0x55e33a38, 0x124340e8,
+    0x2f236958, 0x9d03b548, 0xa0639cf8, 0xe7c3e628, 0xdaa3cf98,
+    0x3813cfcb, 0x0573e67b, 0x42d39cab, 0x7fb3b51b, 0xcd93690b,
+    0xf0f340bb, 0xb7533a6b, 0x8a3313db, 0x0863840a, 0x3503adba,
+    0x72a3d76a, 0x4fc3feda, 0xfde322ca, 0xc0830b7a, 0x872371aa,
+    0xba43581a, 0x9932774d, 0xa4525efd, 0xe3f2242d, 0xde920d9d,
+    0x6cb2d18d, 0x51d2f83d, 0x167282ed, 0x2b12ab5d, 0xa9423c8c,
+    0x9422153c, 0xd3826fec, 0xeee2465c, 0x5cc29a4c, 0x61a2b3fc,
+    0x2602c92c, 0x1b62e09c, 0xf9d2e0cf, 0xc4b2c97f, 0x8312b3af,
+    0xbe729a1f, 0x0c52460f, 0x31326fbf, 0x7692156f, 0x4bf23cdf,
+    0xc9a2ab0e, 0xf4c282be, 0xb362f86e, 0x8e02d1de, 0x3c220dce,
+    0x0142247e, 0x46e25eae, 0x7b82771e, 0xb1e6b092, 0x8c869922,
+    0xcb26e3f2, 0xf646ca42, 0x44661652, 0x79063fe2, 0x3ea64532,
+    0x03c66c82, 0x8196fb53, 0xbcf6d2e3, 0xfb56a833, 0xc6368183,
+    0x74165d93, 0x49767423, 0x0ed60ef3, 0x33b62743, 0xd1062710,
+    0xec660ea0, 0xabc67470, 0x96a65dc0, 0x248681d0, 0x19e6a860,
+    0x5e46d2b0, 0x6326fb00, 0xe1766cd1, 0xdc164561, 0x9bb63fb1,
+    0xa6d61601, 0x14f6ca11, 0x2996e3a1, 0x6e369971, 0x5356b0c1,
+    0x70279f96, 0x4d47b626, 0x0ae7ccf6, 0x3787e546, 0x85a73956,
+    0xb8c710e6, 0xff676a36, 0xc2074386, 0x4057d457, 0x7d37fde7,
+    0x3a978737, 0x07f7ae87, 0xb5d77297, 0x88b75b27, 0xcf1721f7,
+    0xf2770847, 0x10c70814, 0x2da721a4, 0x6a075b74, 0x576772c4,
+    0xe547aed4, 0xd8278764, 0x9f87fdb4, 0xa2e7d404, 0x20b743d5,
+    0x1dd76a65, 0x5a7710b5, 0x67173905, 0xd537e515, 0xe857cca5,
+    0xaff7b675, 0x92979fc5, 0xe915e8db, 0xd475c16b, 0x93d5bbbb,
+    0xaeb5920b, 0x1c954e1b, 0x21f567ab, 0x66551d7b, 0x5b3534cb,
+    0xd965a31a, 0xe4058aaa, 0xa3a5f07a, 0x9ec5d9ca, 0x2ce505da,
+    0x11852c6a, 0x562556ba, 0x6b457f0a, 0x89f57f59, 0xb49556e9,
+    0xf3352c39, 0xce550589, 0x7c75d999, 0x4115f029, 0x06b58af9,
+    0x3bd5a349, 0xb9853498, 0x84e51d28, 0xc34567f8, 0xfe254e48,
+    0x4c059258, 0x7165bbe8, 0x36c5c138, 0x0ba5e888, 0x28d4c7df,
+    0x15b4ee6f, 0x521494bf, 0x6f74bd0f, 0xdd54611f, 0xe03448af,
+    0xa794327f, 0x9af41bcf, 0x18a48c1e, 0x25c4a5ae, 0x6264df7e,
+    0x5f04f6ce, 0xed242ade, 0xd044036e, 0x97e479be, 0xaa84500e,
+    0x4834505d, 0x755479ed, 0x32f4033d, 0x0f942a8d, 0xbdb4f69d,
+    0x80d4df2d, 0xc774a5fd, 0xfa148c4d, 0x78441b9c, 0x4524322c,
+    0x028448fc, 0x3fe4614c, 0x8dc4bd5c, 0xb0a494ec, 0xf704ee3c,
+    0xca64c78c}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x00000000, 0xb029603d, 0x6053c07a, 0xd07aa047, 0xc0a680f5,
+    0x708fe0c8, 0xa0f5408f, 0x10dc20b2, 0xc14b7030, 0x7162100d,
+    0xa118b04a, 0x1131d077, 0x01edf0c5, 0xb1c490f8, 0x61be30bf,
+    0xd1975082, 0x8297e060, 0x32be805d, 0xe2c4201a, 0x52ed4027,
+    0x42316095, 0xf21800a8, 0x2262a0ef, 0x924bc0d2, 0x43dc9050,
+    0xf3f5f06d, 0x238f502a, 0x93a63017, 0x837a10a5, 0x33537098,
+    0xe329d0df, 0x5300b0e2, 0x042fc1c1, 0xb406a1fc, 0x647c01bb,
+    0xd4556186, 0xc4894134, 0x74a02109, 0xa4da814e, 0x14f3e173,
+    0xc564b1f1, 0x754dd1cc, 0xa537718b, 0x151e11b6, 0x05c23104,
+    0xb5eb5139, 0x6591f17e, 0xd5b89143, 0x86b821a1, 0x3691419c,
+    0xe6ebe1db, 0x56c281e6, 0x461ea154, 0xf637c169, 0x264d612e,
+    0x96640113, 0x47f35191, 0xf7da31ac, 0x27a091eb, 0x9789f1d6,
+    0x8755d164, 0x377cb159, 0xe706111e, 0x572f7123, 0x4958f358,
+    0xf9719365, 0x290b3322, 0x9922531f, 0x89fe73ad, 0x39d71390,
+    0xe9adb3d7, 0x5984d3ea, 0x88138368, 0x383ae355, 0xe8404312,
+    0x5869232f, 0x48b5039d, 0xf89c63a0, 0x28e6c3e7, 0x98cfa3da,
+    0xcbcf1338, 0x7be67305, 0xab9cd342, 0x1bb5b37f, 0x0b6993cd,
+    0xbb40f3f0, 0x6b3a53b7, 0xdb13338a, 0x0a846308, 0xbaad0335,
+    0x6ad7a372, 0xdafec34f, 0xca22e3fd, 0x7a0b83c0, 0xaa712387,
+    0x1a5843ba, 0x4d773299, 0xfd5e52a4, 0x2d24f2e3, 0x9d0d92de,
+    0x8dd1b26c, 0x3df8d251, 0xed827216, 0x5dab122b, 0x8c3c42a9,
+    0x3c152294, 0xec6f82d3, 0x5c46e2ee, 0x4c9ac25c, 0xfcb3a261,
+    0x2cc90226, 0x9ce0621b, 0xcfe0d2f9, 0x7fc9b2c4, 0xafb31283,
+    0x1f9a72be, 0x0f46520c, 0xbf6f3231, 0x6f159276, 0xdf3cf24b,
+    0x0eaba2c9, 0xbe82c2f4, 0x6ef862b3, 0xded1028e, 0xce0d223c,
+    0x7e244201, 0xae5ee246, 0x1e77827b, 0x92b0e6b1, 0x2299868c,
+    0xf2e326cb, 0x42ca46f6, 0x52166644, 0xe23f0679, 0x3245a63e,
+    0x826cc603, 0x53fb9681, 0xe3d2f6bc, 0x33a856fb, 0x838136c6,
+    0x935d1674, 0x23747649, 0xf30ed60e, 0x4327b633, 0x102706d1,
+    0xa00e66ec, 0x7074c6ab, 0xc05da696, 0xd0818624, 0x60a8e619,
+    0xb0d2465e, 0x00fb2663, 0xd16c76e1, 0x614516dc, 0xb13fb69b,
+    0x0116d6a6, 0x11caf614, 0xa1e39629, 0x7199366e, 0xc1b05653,
+    0x969f2770, 0x26b6474d, 0xf6cce70a, 0x46e58737, 0x5639a785,
+    0xe610c7b8, 0x366a67ff, 0x864307c2, 0x57d45740, 0xe7fd377d,
+    0x3787973a, 0x87aef707, 0x9772d7b5, 0x275bb788, 0xf72117cf,
+    0x470877f2, 0x1408c710, 0xa421a72d, 0x745b076a, 0xc4726757,
+    0xd4ae47e5, 0x648727d8, 0xb4fd879f, 0x04d4e7a2, 0xd543b720,
+    0x656ad71d, 0xb510775a, 0x05391767, 0x15e537d5, 0xa5cc57e8,
+    0x75b6f7af, 0xc59f9792, 0xdbe815e9, 0x6bc175d4, 0xbbbbd593,
+    0x0b92b5ae, 0x1b4e951c, 0xab67f521, 0x7b1d5566, 0xcb34355b,
+    0x1aa365d9, 0xaa8a05e4, 0x7af0a5a3, 0xcad9c59e, 0xda05e52c,
+    0x6a2c8511, 0xba562556, 0x0a7f456b, 0x597ff589, 0xe95695b4,
+    0x392c35f3, 0x890555ce, 0x99d9757c, 0x29f01541, 0xf98ab506,
+    0x49a3d53b, 0x983485b9, 0x281de584, 0xf86745c3, 0x484e25fe,
+    0x5892054c, 0xe8bb6571, 0x38c1c536, 0x88e8a50b, 0xdfc7d428,
+    0x6feeb415, 0xbf941452, 0x0fbd746f, 0x1f6154dd, 0xaf4834e0,
+    0x7f3294a7, 0xcf1bf49a, 0x1e8ca418, 0xaea5c425, 0x7edf6462,
+    0xcef6045f, 0xde2a24ed, 0x6e0344d0, 0xbe79e497, 0x0e5084aa,
+    0x5d503448, 0xed795475, 0x3d03f432, 0x8d2a940f, 0x9df6b4bd,
+    0x2ddfd480, 0xfda574c7, 0x4d8c14fa, 0x9c1b4478, 0x2c322445,
+    0xfc488402, 0x4c61e43f, 0x5cbdc48d, 0xec94a4b0, 0x3cee04f7,
+    0x8cc764ca},
+   {0x00000000, 0xa5d35ccb, 0x0ba1c84d, 0xae729486, 0x1642919b,
+    0xb391cd50, 0x1de359d6, 0xb830051d, 0x6d8253ec, 0xc8510f27,
+    0x66239ba1, 0xc3f0c76a, 0x7bc0c277, 0xde139ebc, 0x70610a3a,
+    0xd5b256f1, 0x9b02d603, 0x3ed18ac8, 0x90a31e4e, 0x35704285,
+    0x8d404798, 0x28931b53, 0x86e18fd5, 0x2332d31e, 0xf68085ef,
+    0x5353d924, 0xfd214da2, 0x58f21169, 0xe0c21474, 0x451148bf,
+    0xeb63dc39, 0x4eb080f2, 0x3605ac07, 0x93d6f0cc, 0x3da4644a,
+    0x98773881, 0x20473d9c, 0x85946157, 0x2be6f5d1, 0x8e35a91a,
+    0x5b87ffeb, 0xfe54a320, 0x502637a6, 0xf5f56b6d, 0x4dc56e70,
+    0xe81632bb, 0x4664a63d, 0xe3b7faf6, 0xad077a04, 0x08d426cf,
+    0xa6a6b249, 0x0375ee82, 0xbb45eb9f, 0x1e96b754, 0xb0e423d2,
+    0x15377f19, 0xc08529e8, 0x65567523, 0xcb24e1a5, 0x6ef7bd6e,
+    0xd6c7b873, 0x7314e4b8, 0xdd66703e, 0x78b52cf5, 0x6c0a580f,
+    0xc9d904c4, 0x67ab9042, 0xc278cc89, 0x7a48c994, 0xdf9b955f,
+    0x71e901d9, 0xd43a5d12, 0x01880be3, 0xa45b5728, 0x0a29c3ae,
+    0xaffa9f65, 0x17ca9a78, 0xb219c6b3, 0x1c6b5235, 0xb9b80efe,
+    0xf7088e0c, 0x52dbd2c7, 0xfca94641, 0x597a1a8a, 0xe14a1f97,
+    0x4499435c, 0xeaebd7da, 0x4f388b11, 0x9a8adde0, 0x3f59812b,
+    0x912b15ad, 0x34f84966, 0x8cc84c7b, 0x291b10b0, 0x87698436,
+    0x22bad8fd, 0x5a0ff408, 0xffdca8c3, 0x51ae3c45, 0xf47d608e,
+    0x4c4d6593, 0xe99e3958, 0x47ecadde, 0xe23ff115, 0x378da7e4,
+    0x925efb2f, 0x3c2c6fa9, 0x99ff3362, 0x21cf367f, 0x841c6ab4,
+    0x2a6efe32, 0x8fbda2f9, 0xc10d220b, 0x64de7ec0, 0xcaacea46,
+    0x6f7fb68d, 0xd74fb390, 0x729cef5b, 0xdcee7bdd, 0x793d2716,
+    0xac8f71e7, 0x095c2d2c, 0xa72eb9aa, 0x02fde561, 0xbacde07c,
+    0x1f1ebcb7, 0xb16c2831, 0x14bf74fa, 0xd814b01e, 0x7dc7ecd5,
+    0xd3b57853, 0x76662498, 0xce562185, 0x6b857d4e, 0xc5f7e9c8,
+    0x6024b503, 0xb596e3f2, 0x1045bf39, 0xbe372bbf, 0x1be47774,
+    0xa3d47269, 0x06072ea2, 0xa875ba24, 0x0da6e6ef, 0x4316661d,
+    0xe6c53ad6, 0x48b7ae50, 0xed64f29b, 0x5554f786, 0xf087ab4d,
+    0x5ef53fcb, 0xfb266300, 0x2e9435f1, 0x8b47693a, 0x2535fdbc,
+    0x80e6a177, 0x38d6a46a, 0x9d05f8a1, 0x33776c27, 0x96a430ec,
+    0xee111c19, 0x4bc240d2, 0xe5b0d454, 0x4063889f, 0xf8538d82,
+    0x5d80d149, 0xf3f245cf, 0x56211904, 0x83934ff5, 0x2640133e,
+    0x883287b8, 0x2de1db73, 0x95d1de6e, 0x300282a5, 0x9e701623,
+    0x3ba34ae8, 0x7513ca1a, 0xd0c096d1, 0x7eb20257, 0xdb615e9c,
+    0x63515b81, 0xc682074a, 0x68f093cc, 0xcd23cf07, 0x189199f6,
+    0xbd42c53d, 0x133051bb, 0xb6e30d70, 0x0ed3086d, 0xab0054a6,
+    0x0572c020, 0xa0a19ceb, 0xb41ee811, 0x11cdb4da, 0xbfbf205c,
+    0x1a6c7c97, 0xa25c798a, 0x078f2541, 0xa9fdb1c7, 0x0c2eed0c,
+    0xd99cbbfd, 0x7c4fe736, 0xd23d73b0, 0x77ee2f7b, 0xcfde2a66,
+    0x6a0d76ad, 0xc47fe22b, 0x61acbee0, 0x2f1c3e12, 0x8acf62d9,
+    0x24bdf65f, 0x816eaa94, 0x395eaf89, 0x9c8df342, 0x32ff67c4,
+    0x972c3b0f, 0x429e6dfe, 0xe74d3135, 0x493fa5b3, 0xececf978,
+    0x54dcfc65, 0xf10fa0ae, 0x5f7d3428, 0xfaae68e3, 0x821b4416,
+    0x27c818dd, 0x89ba8c5b, 0x2c69d090, 0x9459d58d, 0x318a8946,
+    0x9ff81dc0, 0x3a2b410b, 0xef9917fa, 0x4a4a4b31, 0xe438dfb7,
+    0x41eb837c, 0xf9db8661, 0x5c08daaa, 0xf27a4e2c, 0x57a912e7,
+    0x19199215, 0xbccacede, 0x12b85a58, 0xb76b0693, 0x0f5b038e,
+    0xaa885f45, 0x04facbc3, 0xa1299708, 0x749bc1f9, 0xd1489d32,
+    0x7f3a09b4, 0xdae9557f, 0x62d95062, 0xc70a0ca9, 0x6978982f,
+    0xccabc4e4},
+   {0x00000000, 0xb40b77a6, 0x29119f97, 0x9d1ae831, 0x13244ff4,
+    0xa72f3852, 0x3a35d063, 0x8e3ea7c5, 0x674eef33, 0xd3459895,
+    0x4e5f70a4, 0xfa540702, 0x746aa0c7, 0xc061d761, 0x5d7b3f50,
+    0xe97048f6, 0xce9cde67, 0x7a97a9c1, 0xe78d41f0, 0x53863656,
+    0xddb89193, 0x69b3e635, 0xf4a90e04, 0x40a279a2, 0xa9d23154,
+    0x1dd946f2, 0x80c3aec3, 0x34c8d965, 0xbaf67ea0, 0x0efd0906,
+    0x93e7e137, 0x27ec9691, 0x9c39bdcf, 0x2832ca69, 0xb5282258,
+    0x012355fe, 0x8f1df23b, 0x3b16859d, 0xa60c6dac, 0x12071a0a,
+    0xfb7752fc, 0x4f7c255a, 0xd266cd6b, 0x666dbacd, 0xe8531d08,
+    0x5c586aae, 0xc142829f, 0x7549f539, 0x52a563a8, 0xe6ae140e,
+    0x7bb4fc3f, 0xcfbf8b99, 0x41812c5c, 0xf58a5bfa, 0x6890b3cb,
+    0xdc9bc46d, 0x35eb8c9b, 0x81e0fb3d, 0x1cfa130c, 0xa8f164aa,
+    0x26cfc36f, 0x92c4b4c9, 0x0fde5cf8, 0xbbd52b5e, 0x79750b44,
+    0xcd7e7ce2, 0x506494d3, 0xe46fe375, 0x6a5144b0, 0xde5a3316,
+    0x4340db27, 0xf74bac81, 0x1e3be477, 0xaa3093d1, 0x372a7be0,
+    0x83210c46, 0x0d1fab83, 0xb914dc25, 0x240e3414, 0x900543b2,
+    0xb7e9d523, 0x03e2a285, 0x9ef84ab4, 0x2af33d12, 0xa4cd9ad7,
+    0x10c6ed71, 0x8ddc0540, 0x39d772e6, 0xd0a73a10, 0x64ac4db6,
+    0xf9b6a587, 0x4dbdd221, 0xc38375e4, 0x77880242, 0xea92ea73,
+    0x5e999dd5, 0xe54cb68b, 0x5147c12d, 0xcc5d291c, 0x78565eba,
+    0xf668f97f, 0x42638ed9, 0xdf7966e8, 0x6b72114e, 0x820259b8,
+    0x36092e1e, 0xab13c62f, 0x1f18b189, 0x9126164c, 0x252d61ea,
+    0xb83789db, 0x0c3cfe7d, 0x2bd068ec, 0x9fdb1f4a, 0x02c1f77b,
+    0xb6ca80dd, 0x38f42718, 0x8cff50be, 0x11e5b88f, 0xa5eecf29,
+    0x4c9e87df, 0xf895f079, 0x658f1848, 0xd1846fee, 0x5fbac82b,
+    0xebb1bf8d, 0x76ab57bc, 0xc2a0201a, 0xf2ea1688, 0x46e1612e,
+    0xdbfb891f, 0x6ff0feb9, 0xe1ce597c, 0x55c52eda, 0xc8dfc6eb,
+    0x7cd4b14d, 0x95a4f9bb, 0x21af8e1d, 0xbcb5662c, 0x08be118a,
+    0x8680b64f, 0x328bc1e9, 0xaf9129d8, 0x1b9a5e7e, 0x3c76c8ef,
+    0x887dbf49, 0x15675778, 0xa16c20de, 0x2f52871b, 0x9b59f0bd,
+    0x0643188c, 0xb2486f2a, 0x5b3827dc, 0xef33507a, 0x7229b84b,
+    0xc622cfed, 0x481c6828, 0xfc171f8e, 0x610df7bf, 0xd5068019,
+    0x6ed3ab47, 0xdad8dce1, 0x47c234d0, 0xf3c94376, 0x7df7e4b3,
+    0xc9fc9315, 0x54e67b24, 0xe0ed0c82, 0x099d4474, 0xbd9633d2,
+    0x208cdbe3, 0x9487ac45, 0x1ab90b80, 0xaeb27c26, 0x33a89417,
+    0x87a3e3b1, 0xa04f7520, 0x14440286, 0x895eeab7, 0x3d559d11,
+    0xb36b3ad4, 0x07604d72, 0x9a7aa543, 0x2e71d2e5, 0xc7019a13,
+    0x730aedb5, 0xee100584, 0x5a1b7222, 0xd425d5e7, 0x602ea241,
+    0xfd344a70, 0x493f3dd6, 0x8b9f1dcc, 0x3f946a6a, 0xa28e825b,
+    0x1685f5fd, 0x98bb5238, 0x2cb0259e, 0xb1aacdaf, 0x05a1ba09,
+    0xecd1f2ff, 0x58da8559, 0xc5c06d68, 0x71cb1ace, 0xfff5bd0b,
+    0x4bfecaad, 0xd6e4229c, 0x62ef553a, 0x4503c3ab, 0xf108b40d,
+    0x6c125c3c, 0xd8192b9a, 0x56278c5f, 0xe22cfbf9, 0x7f3613c8,
+    0xcb3d646e, 0x224d2c98, 0x96465b3e, 0x0b5cb30f, 0xbf57c4a9,
+    0x3169636c, 0x856214ca, 0x1878fcfb, 0xac738b5d, 0x17a6a003,
+    0xa3add7a5, 0x3eb73f94, 0x8abc4832, 0x0482eff7, 0xb0899851,
+    0x2d937060, 0x999807c6, 0x70e84f30, 0xc4e33896, 0x59f9d0a7,
+    0xedf2a701, 0x63cc00c4, 0xd7c77762, 0x4add9f53, 0xfed6e8f5,
+    0xd93a7e64, 0x6d3109c2, 0xf02be1f3, 0x44209655, 0xca1e3190,
+    0x7e154636, 0xe30fae07, 0x5704d9a1, 0xbe749157, 0x0a7fe6f1,
+    0x97650ec0, 0x236e7966, 0xad50dea3, 0x195ba905, 0x84414134,
+    0x304a3692},
+   {0x00000000, 0x9e00aacc, 0x7d072542, 0xe3078f8e, 0xfa0e4a84,
+    0x640ee048, 0x87096fc6, 0x1909c50a, 0xb51be5d3, 0x2b1b4f1f,
+    0xc81cc091, 0x561c6a5d, 0x4f15af57, 0xd115059b, 0x32128a15,
+    0xac1220d9, 0x2b31bb7c, 0xb53111b0, 0x56369e3e, 0xc83634f2,
+    0xd13ff1f8, 0x4f3f5b34, 0xac38d4ba, 0x32387e76, 0x9e2a5eaf,
+    0x002af463, 0xe32d7bed, 0x7d2dd121, 0x6424142b, 0xfa24bee7,
+    0x19233169, 0x87239ba5, 0x566276f9, 0xc862dc35, 0x2b6553bb,
+    0xb565f977, 0xac6c3c7d, 0x326c96b1, 0xd16b193f, 0x4f6bb3f3,
+    0xe379932a, 0x7d7939e6, 0x9e7eb668, 0x007e1ca4, 0x1977d9ae,
+    0x87777362, 0x6470fcec, 0xfa705620, 0x7d53cd85, 0xe3536749,
+    0x0054e8c7, 0x9e54420b, 0x875d8701, 0x195d2dcd, 0xfa5aa243,
+    0x645a088f, 0xc8482856, 0x5648829a, 0xb54f0d14, 0x2b4fa7d8,
+    0x324662d2, 0xac46c81e, 0x4f414790, 0xd141ed5c, 0xedc29d29,
+    0x73c237e5, 0x90c5b86b, 0x0ec512a7, 0x17ccd7ad, 0x89cc7d61,
+    0x6acbf2ef, 0xf4cb5823, 0x58d978fa, 0xc6d9d236, 0x25de5db8,
+    0xbbdef774, 0xa2d7327e, 0x3cd798b2, 0xdfd0173c, 0x41d0bdf0,
+    0xc6f32655, 0x58f38c99, 0xbbf40317, 0x25f4a9db, 0x3cfd6cd1,
+    0xa2fdc61d, 0x41fa4993, 0xdffae35f, 0x73e8c386, 0xede8694a,
+    0x0eefe6c4, 0x90ef4c08, 0x89e68902, 0x17e623ce, 0xf4e1ac40,
+    0x6ae1068c, 0xbba0ebd0, 0x25a0411c, 0xc6a7ce92, 0x58a7645e,
+    0x41aea154, 0xdfae0b98, 0x3ca98416, 0xa2a92eda, 0x0ebb0e03,
+    0x90bba4cf, 0x73bc2b41, 0xedbc818d, 0xf4b54487, 0x6ab5ee4b,
+    0x89b261c5, 0x17b2cb09, 0x909150ac, 0x0e91fa60, 0xed9675ee,
+    0x7396df22, 0x6a9f1a28, 0xf49fb0e4, 0x17983f6a, 0x899895a6,
+    0x258ab57f, 0xbb8a1fb3, 0x588d903d, 0xc68d3af1, 0xdf84fffb,
+    0x41845537, 0xa283dab9, 0x3c837075, 0xda853b53, 0x4485919f,
+    0xa7821e11, 0x3982b4dd, 0x208b71d7, 0xbe8bdb1b, 0x5d8c5495,
+    0xc38cfe59, 0x6f9ede80, 0xf19e744c, 0x1299fbc2, 0x8c99510e,
+    0x95909404, 0x0b903ec8, 0xe897b146, 0x76971b8a, 0xf1b4802f,
+    0x6fb42ae3, 0x8cb3a56d, 0x12b30fa1, 0x0bbacaab, 0x95ba6067,
+    0x76bdefe9, 0xe8bd4525, 0x44af65fc, 0xdaafcf30, 0x39a840be,
+    0xa7a8ea72, 0xbea12f78, 0x20a185b4, 0xc3a60a3a, 0x5da6a0f6,
+    0x8ce74daa, 0x12e7e766, 0xf1e068e8, 0x6fe0c224, 0x76e9072e,
+    0xe8e9ade2, 0x0bee226c, 0x95ee88a0, 0x39fca879, 0xa7fc02b5,
+    0x44fb8d3b, 0xdafb27f7, 0xc3f2e2fd, 0x5df24831, 0xbef5c7bf,
+    0x20f56d73, 0xa7d6f6d6, 0x39d65c1a, 0xdad1d394, 0x44d17958,
+    0x5dd8bc52, 0xc3d8169e, 0x20df9910, 0xbedf33dc, 0x12cd1305,
+    0x8ccdb9c9, 0x6fca3647, 0xf1ca9c8b, 0xe8c35981, 0x76c3f34d,
+    0x95c47cc3, 0x0bc4d60f, 0x3747a67a, 0xa9470cb6, 0x4a408338,
+    0xd44029f4, 0xcd49ecfe, 0x53494632, 0xb04ec9bc, 0x2e4e6370,
+    0x825c43a9, 0x1c5ce965, 0xff5b66eb, 0x615bcc27, 0x7852092d,
+    0xe652a3e1, 0x05552c6f, 0x9b5586a3, 0x1c761d06, 0x8276b7ca,
+    0x61713844, 0xff719288, 0xe6785782, 0x7878fd4e, 0x9b7f72c0,
+    0x057fd80c, 0xa96df8d5, 0x376d5219, 0xd46add97, 0x4a6a775b,
+    0x5363b251, 0xcd63189d, 0x2e649713, 0xb0643ddf, 0x6125d083,
+    0xff257a4f, 0x1c22f5c1, 0x82225f0d, 0x9b2b9a07, 0x052b30cb,
+    0xe62cbf45, 0x782c1589, 0xd43e3550, 0x4a3e9f9c, 0xa9391012,
+    0x3739bade, 0x2e307fd4, 0xb030d518, 0x53375a96, 0xcd37f05a,
+    0x4a146bff, 0xd414c133, 0x37134ebd, 0xa913e471, 0xb01a217b,
+    0x2e1a8bb7, 0xcd1d0439, 0x531daef5, 0xff0f8e2c, 0x610f24e0,
+    0x8208ab6e, 0x1c0801a2, 0x0501c4a8, 0x9b016e64, 0x7806e1ea,
+    0xe6064b26}};
+
+#endif
+
+#endif
+
+#if N == 3
+
+#if W == 8
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0x81256527, 0xd93bcc0f, 0x581ea928, 0x69069e5f,
+    0xe823fb78, 0xb03d5250, 0x31183777, 0xd20d3cbe, 0x53285999,
+    0x0b36f0b1, 0x8a139596, 0xbb0ba2e1, 0x3a2ec7c6, 0x62306eee,
+    0xe3150bc9, 0x7f6b7f3d, 0xfe4e1a1a, 0xa650b332, 0x2775d615,
+    0x166de162, 0x97488445, 0xcf562d6d, 0x4e73484a, 0xad664383,
+    0x2c4326a4, 0x745d8f8c, 0xf578eaab, 0xc460dddc, 0x4545b8fb,
+    0x1d5b11d3, 0x9c7e74f4, 0xfed6fe7a, 0x7ff39b5d, 0x27ed3275,
+    0xa6c85752, 0x97d06025, 0x16f50502, 0x4eebac2a, 0xcfcec90d,
+    0x2cdbc2c4, 0xadfea7e3, 0xf5e00ecb, 0x74c56bec, 0x45dd5c9b,
+    0xc4f839bc, 0x9ce69094, 0x1dc3f5b3, 0x81bd8147, 0x0098e460,
+    0x58864d48, 0xd9a3286f, 0xe8bb1f18, 0x699e7a3f, 0x3180d317,
+    0xb0a5b630, 0x53b0bdf9, 0xd295d8de, 0x8a8b71f6, 0x0bae14d1,
+    0x3ab623a6, 0xbb934681, 0xe38defa9, 0x62a88a8e, 0x26dcfab5,
+    0xa7f99f92, 0xffe736ba, 0x7ec2539d, 0x4fda64ea, 0xceff01cd,
+    0x96e1a8e5, 0x17c4cdc2, 0xf4d1c60b, 0x75f4a32c, 0x2dea0a04,
+    0xaccf6f23, 0x9dd75854, 0x1cf23d73, 0x44ec945b, 0xc5c9f17c,
+    0x59b78588, 0xd892e0af, 0x808c4987, 0x01a92ca0, 0x30b11bd7,
+    0xb1947ef0, 0xe98ad7d8, 0x68afb2ff, 0x8bbab936, 0x0a9fdc11,
+    0x52817539, 0xd3a4101e, 0xe2bc2769, 0x6399424e, 0x3b87eb66,
+    0xbaa28e41, 0xd80a04cf, 0x592f61e8, 0x0131c8c0, 0x8014ade7,
+    0xb10c9a90, 0x3029ffb7, 0x6837569f, 0xe91233b8, 0x0a073871,
+    0x8b225d56, 0xd33cf47e, 0x52199159, 0x6301a62e, 0xe224c309,
+    0xba3a6a21, 0x3b1f0f06, 0xa7617bf2, 0x26441ed5, 0x7e5ab7fd,
+    0xff7fd2da, 0xce67e5ad, 0x4f42808a, 0x175c29a2, 0x96794c85,
+    0x756c474c, 0xf449226b, 0xac578b43, 0x2d72ee64, 0x1c6ad913,
+    0x9d4fbc34, 0xc551151c, 0x4474703b, 0x4db9f56a, 0xcc9c904d,
+    0x94823965, 0x15a75c42, 0x24bf6b35, 0xa59a0e12, 0xfd84a73a,
+    0x7ca1c21d, 0x9fb4c9d4, 0x1e91acf3, 0x468f05db, 0xc7aa60fc,
+    0xf6b2578b, 0x779732ac, 0x2f899b84, 0xaeacfea3, 0x32d28a57,
+    0xb3f7ef70, 0xebe94658, 0x6acc237f, 0x5bd41408, 0xdaf1712f,
+    0x82efd807, 0x03cabd20, 0xe0dfb6e9, 0x61fad3ce, 0x39e47ae6,
+    0xb8c11fc1, 0x89d928b6, 0x08fc4d91, 0x50e2e4b9, 0xd1c7819e,
+    0xb36f0b10, 0x324a6e37, 0x6a54c71f, 0xeb71a238, 0xda69954f,
+    0x5b4cf068, 0x03525940, 0x82773c67, 0x616237ae, 0xe0475289,
+    0xb859fba1, 0x397c9e86, 0x0864a9f1, 0x8941ccd6, 0xd15f65fe,
+    0x507a00d9, 0xcc04742d, 0x4d21110a, 0x153fb822, 0x941add05,
+    0xa502ea72, 0x24278f55, 0x7c39267d, 0xfd1c435a, 0x1e094893,
+    0x9f2c2db4, 0xc732849c, 0x4617e1bb, 0x770fd6cc, 0xf62ab3eb,
+    0xae341ac3, 0x2f117fe4, 0x6b650fdf, 0xea406af8, 0xb25ec3d0,
+    0x337ba6f7, 0x02639180, 0x8346f4a7, 0xdb585d8f, 0x5a7d38a8,
+    0xb9683361, 0x384d5646, 0x6053ff6e, 0xe1769a49, 0xd06ead3e,
+    0x514bc819, 0x09556131, 0x88700416, 0x140e70e2, 0x952b15c5,
+    0xcd35bced, 0x4c10d9ca, 0x7d08eebd, 0xfc2d8b9a, 0xa43322b2,
+    0x25164795, 0xc6034c5c, 0x4726297b, 0x1f388053, 0x9e1de574,
+    0xaf05d203, 0x2e20b724, 0x763e1e0c, 0xf71b7b2b, 0x95b3f1a5,
+    0x14969482, 0x4c883daa, 0xcdad588d, 0xfcb56ffa, 0x7d900add,
+    0x258ea3f5, 0xa4abc6d2, 0x47becd1b, 0xc69ba83c, 0x9e850114,
+    0x1fa06433, 0x2eb85344, 0xaf9d3663, 0xf7839f4b, 0x76a6fa6c,
+    0xead88e98, 0x6bfdebbf, 0x33e34297, 0xb2c627b0, 0x83de10c7,
+    0x02fb75e0, 0x5ae5dcc8, 0xdbc0b9ef, 0x38d5b226, 0xb9f0d701,
+    0xe1ee7e29, 0x60cb1b0e, 0x51d32c79, 0xd0f6495e, 0x88e8e076,
+    0x09cd8551},
+   {0x00000000, 0x9b73ead4, 0xed96d3e9, 0x76e5393d, 0x005ca193,
+    0x9b2f4b47, 0xedca727a, 0x76b998ae, 0x00b94326, 0x9bcaa9f2,
+    0xed2f90cf, 0x765c7a1b, 0x00e5e2b5, 0x9b960861, 0xed73315c,
+    0x7600db88, 0x0172864c, 0x9a016c98, 0xece455a5, 0x7797bf71,
+    0x012e27df, 0x9a5dcd0b, 0xecb8f436, 0x77cb1ee2, 0x01cbc56a,
+    0x9ab82fbe, 0xec5d1683, 0x772efc57, 0x019764f9, 0x9ae48e2d,
+    0xec01b710, 0x77725dc4, 0x02e50c98, 0x9996e64c, 0xef73df71,
+    0x740035a5, 0x02b9ad0b, 0x99ca47df, 0xef2f7ee2, 0x745c9436,
+    0x025c4fbe, 0x992fa56a, 0xefca9c57, 0x74b97683, 0x0200ee2d,
+    0x997304f9, 0xef963dc4, 0x74e5d710, 0x03978ad4, 0x98e46000,
+    0xee01593d, 0x7572b3e9, 0x03cb2b47, 0x98b8c193, 0xee5df8ae,
+    0x752e127a, 0x032ec9f2, 0x985d2326, 0xeeb81a1b, 0x75cbf0cf,
+    0x03726861, 0x980182b5, 0xeee4bb88, 0x7597515c, 0x05ca1930,
+    0x9eb9f3e4, 0xe85ccad9, 0x732f200d, 0x0596b8a3, 0x9ee55277,
+    0xe8006b4a, 0x7373819e, 0x05735a16, 0x9e00b0c2, 0xe8e589ff,
+    0x7396632b, 0x052ffb85, 0x9e5c1151, 0xe8b9286c, 0x73cac2b8,
+    0x04b89f7c, 0x9fcb75a8, 0xe92e4c95, 0x725da641, 0x04e43eef,
+    0x9f97d43b, 0xe972ed06, 0x720107d2, 0x0401dc5a, 0x9f72368e,
+    0xe9970fb3, 0x72e4e567, 0x045d7dc9, 0x9f2e971d, 0xe9cbae20,
+    0x72b844f4, 0x072f15a8, 0x9c5cff7c, 0xeab9c641, 0x71ca2c95,
+    0x0773b43b, 0x9c005eef, 0xeae567d2, 0x71968d06, 0x0796568e,
+    0x9ce5bc5a, 0xea008567, 0x71736fb3, 0x07caf71d, 0x9cb91dc9,
+    0xea5c24f4, 0x712fce20, 0x065d93e4, 0x9d2e7930, 0xebcb400d,
+    0x70b8aad9, 0x06013277, 0x9d72d8a3, 0xeb97e19e, 0x70e40b4a,
+    0x06e4d0c2, 0x9d973a16, 0xeb72032b, 0x7001e9ff, 0x06b87151,
+    0x9dcb9b85, 0xeb2ea2b8, 0x705d486c, 0x0b943260, 0x90e7d8b4,
+    0xe602e189, 0x7d710b5d, 0x0bc893f3, 0x90bb7927, 0xe65e401a,
+    0x7d2daace, 0x0b2d7146, 0x905e9b92, 0xe6bba2af, 0x7dc8487b,
+    0x0b71d0d5, 0x90023a01, 0xe6e7033c, 0x7d94e9e8, 0x0ae6b42c,
+    0x91955ef8, 0xe77067c5, 0x7c038d11, 0x0aba15bf, 0x91c9ff6b,
+    0xe72cc656, 0x7c5f2c82, 0x0a5ff70a, 0x912c1dde, 0xe7c924e3,
+    0x7cbace37, 0x0a035699, 0x9170bc4d, 0xe7958570, 0x7ce66fa4,
+    0x09713ef8, 0x9202d42c, 0xe4e7ed11, 0x7f9407c5, 0x092d9f6b,
+    0x925e75bf, 0xe4bb4c82, 0x7fc8a656, 0x09c87dde, 0x92bb970a,
+    0xe45eae37, 0x7f2d44e3, 0x0994dc4d, 0x92e73699, 0xe4020fa4,
+    0x7f71e570, 0x0803b8b4, 0x93705260, 0xe5956b5d, 0x7ee68189,
+    0x085f1927, 0x932cf3f3, 0xe5c9cace, 0x7eba201a, 0x08bafb92,
+    0x93c91146, 0xe52c287b, 0x7e5fc2af, 0x08e65a01, 0x9395b0d5,
+    0xe57089e8, 0x7e03633c, 0x0e5e2b50, 0x952dc184, 0xe3c8f8b9,
+    0x78bb126d, 0x0e028ac3, 0x95716017, 0xe394592a, 0x78e7b3fe,
+    0x0ee76876, 0x959482a2, 0xe371bb9f, 0x7802514b, 0x0ebbc9e5,
+    0x95c82331, 0xe32d1a0c, 0x785ef0d8, 0x0f2cad1c, 0x945f47c8,
+    0xe2ba7ef5, 0x79c99421, 0x0f700c8f, 0x9403e65b, 0xe2e6df66,
+    0x799535b2, 0x0f95ee3a, 0x94e604ee, 0xe2033dd3, 0x7970d707,
+    0x0fc94fa9, 0x94baa57d, 0xe25f9c40, 0x792c7694, 0x0cbb27c8,
+    0x97c8cd1c, 0xe12df421, 0x7a5e1ef5, 0x0ce7865b, 0x97946c8f,
+    0xe17155b2, 0x7a02bf66, 0x0c0264ee, 0x97718e3a, 0xe194b707,
+    0x7ae75dd3, 0x0c5ec57d, 0x972d2fa9, 0xe1c81694, 0x7abbfc40,
+    0x0dc9a184, 0x96ba4b50, 0xe05f726d, 0x7b2c98b9, 0x0d950017,
+    0x96e6eac3, 0xe003d3fe, 0x7b70392a, 0x0d70e2a2, 0x96030876,
+    0xe0e6314b, 0x7b95db9f, 0x0d2c4331, 0x965fa9e5, 0xe0ba90d8,
+    0x7bc97a0c},
+   {0x00000000, 0x172864c0, 0x2e50c980, 0x3978ad40, 0x5ca19300,
+    0x4b89f7c0, 0x72f15a80, 0x65d93e40, 0xb9432600, 0xae6b42c0,
+    0x9713ef80, 0x803b8b40, 0xe5e2b500, 0xf2cad1c0, 0xcbb27c80,
+    0xdc9a1840, 0xa9f74a41, 0xbedf2e81, 0x87a783c1, 0x908fe701,
+    0xf556d941, 0xe27ebd81, 0xdb0610c1, 0xcc2e7401, 0x10b46c41,
+    0x079c0881, 0x3ee4a5c1, 0x29ccc101, 0x4c15ff41, 0x5b3d9b81,
+    0x624536c1, 0x756d5201, 0x889f92c3, 0x9fb7f603, 0xa6cf5b43,
+    0xb1e73f83, 0xd43e01c3, 0xc3166503, 0xfa6ec843, 0xed46ac83,
+    0x31dcb4c3, 0x26f4d003, 0x1f8c7d43, 0x08a41983, 0x6d7d27c3,
+    0x7a554303, 0x432dee43, 0x54058a83, 0x2168d882, 0x3640bc42,
+    0x0f381102, 0x181075c2, 0x7dc94b82, 0x6ae12f42, 0x53998202,
+    0x44b1e6c2, 0x982bfe82, 0x8f039a42, 0xb67b3702, 0xa15353c2,
+    0xc48a6d82, 0xd3a20942, 0xeadaa402, 0xfdf2c0c2, 0xca4e23c7,
+    0xdd664707, 0xe41eea47, 0xf3368e87, 0x96efb0c7, 0x81c7d407,
+    0xb8bf7947, 0xaf971d87, 0x730d05c7, 0x64256107, 0x5d5dcc47,
+    0x4a75a887, 0x2fac96c7, 0x3884f207, 0x01fc5f47, 0x16d43b87,
+    0x63b96986, 0x74910d46, 0x4de9a006, 0x5ac1c4c6, 0x3f18fa86,
+    0x28309e46, 0x11483306, 0x066057c6, 0xdafa4f86, 0xcdd22b46,
+    0xf4aa8606, 0xe382e2c6, 0x865bdc86, 0x9173b846, 0xa80b1506,
+    0xbf2371c6, 0x42d1b104, 0x55f9d5c4, 0x6c817884, 0x7ba91c44,
+    0x1e702204, 0x095846c4, 0x3020eb84, 0x27088f44, 0xfb929704,
+    0xecbaf3c4, 0xd5c25e84, 0xc2ea3a44, 0xa7330404, 0xb01b60c4,
+    0x8963cd84, 0x9e4ba944, 0xeb26fb45, 0xfc0e9f85, 0xc57632c5,
+    0xd25e5605, 0xb7876845, 0xa0af0c85, 0x99d7a1c5, 0x8effc505,
+    0x5265dd45, 0x454db985, 0x7c3514c5, 0x6b1d7005, 0x0ec44e45,
+    0x19ec2a85, 0x209487c5, 0x37bce305, 0x4fed41cf, 0x58c5250f,
+    0x61bd884f, 0x7695ec8f, 0x134cd2cf, 0x0464b60f, 0x3d1c1b4f,
+    0x2a347f8f, 0xf6ae67cf, 0xe186030f, 0xd8feae4f, 0xcfd6ca8f,
+    0xaa0ff4cf, 0xbd27900f, 0x845f3d4f, 0x9377598f, 0xe61a0b8e,
+    0xf1326f4e, 0xc84ac20e, 0xdf62a6ce, 0xbabb988e, 0xad93fc4e,
+    0x94eb510e, 0x83c335ce, 0x5f592d8e, 0x4871494e, 0x7109e40e,
+    0x662180ce, 0x03f8be8e, 0x14d0da4e, 0x2da8770e, 0x3a8013ce,
+    0xc772d30c, 0xd05ab7cc, 0xe9221a8c, 0xfe0a7e4c, 0x9bd3400c,
+    0x8cfb24cc, 0xb583898c, 0xa2abed4c, 0x7e31f50c, 0x691991cc,
+    0x50613c8c, 0x4749584c, 0x2290660c, 0x35b802cc, 0x0cc0af8c,
+    0x1be8cb4c, 0x6e85994d, 0x79adfd8d, 0x40d550cd, 0x57fd340d,
+    0x32240a4d, 0x250c6e8d, 0x1c74c3cd, 0x0b5ca70d, 0xd7c6bf4d,
+    0xc0eedb8d, 0xf99676cd, 0xeebe120d, 0x8b672c4d, 0x9c4f488d,
+    0xa537e5cd, 0xb21f810d, 0x85a36208, 0x928b06c8, 0xabf3ab88,
+    0xbcdbcf48, 0xd902f108, 0xce2a95c8, 0xf7523888, 0xe07a5c48,
+    0x3ce04408, 0x2bc820c8, 0x12b08d88, 0x0598e948, 0x6041d708,
+    0x7769b3c8, 0x4e111e88, 0x59397a48, 0x2c542849, 0x3b7c4c89,
+    0x0204e1c9, 0x152c8509, 0x70f5bb49, 0x67dddf89, 0x5ea572c9,
+    0x498d1609, 0x95170e49, 0x823f6a89, 0xbb47c7c9, 0xac6fa309,
+    0xc9b69d49, 0xde9ef989, 0xe7e654c9, 0xf0ce3009, 0x0d3cf0cb,
+    0x1a14940b, 0x236c394b, 0x34445d8b, 0x519d63cb, 0x46b5070b,
+    0x7fcdaa4b, 0x68e5ce8b, 0xb47fd6cb, 0xa357b20b, 0x9a2f1f4b,
+    0x8d077b8b, 0xe8de45cb, 0xfff6210b, 0xc68e8c4b, 0xd1a6e88b,
+    0xa4cbba8a, 0xb3e3de4a, 0x8a9b730a, 0x9db317ca, 0xf86a298a,
+    0xef424d4a, 0xd63ae00a, 0xc11284ca, 0x1d889c8a, 0x0aa0f84a,
+    0x33d8550a, 0x24f031ca, 0x41290f8a, 0x56016b4a, 0x6f79c60a,
+    0x7851a2ca},
+   {0x00000000, 0x9fda839e, 0xe4c4017d, 0x7b1e82e3, 0x12f904bb,
+    0x8d238725, 0xf63d05c6, 0x69e78658, 0x25f20976, 0xba288ae8,
+    0xc136080b, 0x5eec8b95, 0x370b0dcd, 0xa8d18e53, 0xd3cf0cb0,
+    0x4c158f2e, 0x4be412ec, 0xd43e9172, 0xaf201391, 0x30fa900f,
+    0x591d1657, 0xc6c795c9, 0xbdd9172a, 0x220394b4, 0x6e161b9a,
+    0xf1cc9804, 0x8ad21ae7, 0x15089979, 0x7cef1f21, 0xe3359cbf,
+    0x982b1e5c, 0x07f19dc2, 0x97c825d8, 0x0812a646, 0x730c24a5,
+    0xecd6a73b, 0x85312163, 0x1aeba2fd, 0x61f5201e, 0xfe2fa380,
+    0xb23a2cae, 0x2de0af30, 0x56fe2dd3, 0xc924ae4d, 0xa0c32815,
+    0x3f19ab8b, 0x44072968, 0xdbddaaf6, 0xdc2c3734, 0x43f6b4aa,
+    0x38e83649, 0xa732b5d7, 0xced5338f, 0x510fb011, 0x2a1132f2,
+    0xb5cbb16c, 0xf9de3e42, 0x6604bddc, 0x1d1a3f3f, 0x82c0bca1,
+    0xeb273af9, 0x74fdb967, 0x0fe33b84, 0x9039b81a, 0xf4e14df1,
+    0x6b3bce6f, 0x10254c8c, 0x8fffcf12, 0xe618494a, 0x79c2cad4,
+    0x02dc4837, 0x9d06cba9, 0xd1134487, 0x4ec9c719, 0x35d745fa,
+    0xaa0dc664, 0xc3ea403c, 0x5c30c3a2, 0x272e4141, 0xb8f4c2df,
+    0xbf055f1d, 0x20dfdc83, 0x5bc15e60, 0xc41bddfe, 0xadfc5ba6,
+    0x3226d838, 0x49385adb, 0xd6e2d945, 0x9af7566b, 0x052dd5f5,
+    0x7e335716, 0xe1e9d488, 0x880e52d0, 0x17d4d14e, 0x6cca53ad,
+    0xf310d033, 0x63296829, 0xfcf3ebb7, 0x87ed6954, 0x1837eaca,
+    0x71d06c92, 0xee0aef0c, 0x95146def, 0x0aceee71, 0x46db615f,
+    0xd901e2c1, 0xa21f6022, 0x3dc5e3bc, 0x542265e4, 0xcbf8e67a,
+    0xb0e66499, 0x2f3ce707, 0x28cd7ac5, 0xb717f95b, 0xcc097bb8,
+    0x53d3f826, 0x3a347e7e, 0xa5eefde0, 0xdef07f03, 0x412afc9d,
+    0x0d3f73b3, 0x92e5f02d, 0xe9fb72ce, 0x7621f150, 0x1fc67708,
+    0x801cf496, 0xfb027675, 0x64d8f5eb, 0x32b39da3, 0xad691e3d,
+    0xd6779cde, 0x49ad1f40, 0x204a9918, 0xbf901a86, 0xc48e9865,
+    0x5b541bfb, 0x174194d5, 0x889b174b, 0xf38595a8, 0x6c5f1636,
+    0x05b8906e, 0x9a6213f0, 0xe17c9113, 0x7ea6128d, 0x79578f4f,
+    0xe68d0cd1, 0x9d938e32, 0x02490dac, 0x6bae8bf4, 0xf474086a,
+    0x8f6a8a89, 0x10b00917, 0x5ca58639, 0xc37f05a7, 0xb8618744,
+    0x27bb04da, 0x4e5c8282, 0xd186011c, 0xaa9883ff, 0x35420061,
+    0xa57bb87b, 0x3aa13be5, 0x41bfb906, 0xde653a98, 0xb782bcc0,
+    0x28583f5e, 0x5346bdbd, 0xcc9c3e23, 0x8089b10d, 0x1f533293,
+    0x644db070, 0xfb9733ee, 0x9270b5b6, 0x0daa3628, 0x76b4b4cb,
+    0xe96e3755, 0xee9faa97, 0x71452909, 0x0a5babea, 0x95812874,
+    0xfc66ae2c, 0x63bc2db2, 0x18a2af51, 0x87782ccf, 0xcb6da3e1,
+    0x54b7207f, 0x2fa9a29c, 0xb0732102, 0xd994a75a, 0x464e24c4,
+    0x3d50a627, 0xa28a25b9, 0xc652d052, 0x598853cc, 0x2296d12f,
+    0xbd4c52b1, 0xd4abd4e9, 0x4b715777, 0x306fd594, 0xafb5560a,
+    0xe3a0d924, 0x7c7a5aba, 0x0764d859, 0x98be5bc7, 0xf159dd9f,
+    0x6e835e01, 0x159ddce2, 0x8a475f7c, 0x8db6c2be, 0x126c4120,
+    0x6972c3c3, 0xf6a8405d, 0x9f4fc605, 0x0095459b, 0x7b8bc778,
+    0xe45144e6, 0xa844cbc8, 0x379e4856, 0x4c80cab5, 0xd35a492b,
+    0xbabdcf73, 0x25674ced, 0x5e79ce0e, 0xc1a34d90, 0x519af58a,
+    0xce407614, 0xb55ef4f7, 0x2a847769, 0x4363f131, 0xdcb972af,
+    0xa7a7f04c, 0x387d73d2, 0x7468fcfc, 0xebb27f62, 0x90acfd81,
+    0x0f767e1f, 0x6691f847, 0xf94b7bd9, 0x8255f93a, 0x1d8f7aa4,
+    0x1a7ee766, 0x85a464f8, 0xfebae61b, 0x61606585, 0x0887e3dd,
+    0x975d6043, 0xec43e2a0, 0x7399613e, 0x3f8cee10, 0xa0566d8e,
+    0xdb48ef6d, 0x44926cf3, 0x2d75eaab, 0xb2af6935, 0xc9b1ebd6,
+    0x566b6848},
+   {0x00000000, 0x65673b46, 0xcace768c, 0xafa94dca, 0x4eedeb59,
+    0x2b8ad01f, 0x84239dd5, 0xe144a693, 0x9ddbd6b2, 0xf8bcedf4,
+    0x5715a03e, 0x32729b78, 0xd3363deb, 0xb65106ad, 0x19f84b67,
+    0x7c9f7021, 0xe0c6ab25, 0x85a19063, 0x2a08dda9, 0x4f6fe6ef,
+    0xae2b407c, 0xcb4c7b3a, 0x64e536f0, 0x01820db6, 0x7d1d7d97,
+    0x187a46d1, 0xb7d30b1b, 0xd2b4305d, 0x33f096ce, 0x5697ad88,
+    0xf93ee042, 0x9c59db04, 0x1afc500b, 0x7f9b6b4d, 0xd0322687,
+    0xb5551dc1, 0x5411bb52, 0x31768014, 0x9edfcdde, 0xfbb8f698,
+    0x872786b9, 0xe240bdff, 0x4de9f035, 0x288ecb73, 0xc9ca6de0,
+    0xacad56a6, 0x03041b6c, 0x6663202a, 0xfa3afb2e, 0x9f5dc068,
+    0x30f48da2, 0x5593b6e4, 0xb4d71077, 0xd1b02b31, 0x7e1966fb,
+    0x1b7e5dbd, 0x67e12d9c, 0x028616da, 0xad2f5b10, 0xc8486056,
+    0x290cc6c5, 0x4c6bfd83, 0xe3c2b049, 0x86a58b0f, 0x35f8a016,
+    0x509f9b50, 0xff36d69a, 0x9a51eddc, 0x7b154b4f, 0x1e727009,
+    0xb1db3dc3, 0xd4bc0685, 0xa82376a4, 0xcd444de2, 0x62ed0028,
+    0x078a3b6e, 0xe6ce9dfd, 0x83a9a6bb, 0x2c00eb71, 0x4967d037,
+    0xd53e0b33, 0xb0593075, 0x1ff07dbf, 0x7a9746f9, 0x9bd3e06a,
+    0xfeb4db2c, 0x511d96e6, 0x347aada0, 0x48e5dd81, 0x2d82e6c7,
+    0x822bab0d, 0xe74c904b, 0x060836d8, 0x636f0d9e, 0xccc64054,
+    0xa9a17b12, 0x2f04f01d, 0x4a63cb5b, 0xe5ca8691, 0x80adbdd7,
+    0x61e91b44, 0x048e2002, 0xab276dc8, 0xce40568e, 0xb2df26af,
+    0xd7b81de9, 0x78115023, 0x1d766b65, 0xfc32cdf6, 0x9955f6b0,
+    0x36fcbb7a, 0x539b803c, 0xcfc25b38, 0xaaa5607e, 0x050c2db4,
+    0x606b16f2, 0x812fb061, 0xe4488b27, 0x4be1c6ed, 0x2e86fdab,
+    0x52198d8a, 0x377eb6cc, 0x98d7fb06, 0xfdb0c040, 0x1cf466d3,
+    0x79935d95, 0xd63a105f, 0xb35d2b19, 0x6bf1402c, 0x0e967b6a,
+    0xa13f36a0, 0xc4580de6, 0x251cab75, 0x407b9033, 0xefd2ddf9,
+    0x8ab5e6bf, 0xf62a969e, 0x934dadd8, 0x3ce4e012, 0x5983db54,
+    0xb8c77dc7, 0xdda04681, 0x72090b4b, 0x176e300d, 0x8b37eb09,
+    0xee50d04f, 0x41f99d85, 0x249ea6c3, 0xc5da0050, 0xa0bd3b16,
+    0x0f1476dc, 0x6a734d9a, 0x16ec3dbb, 0x738b06fd, 0xdc224b37,
+    0xb9457071, 0x5801d6e2, 0x3d66eda4, 0x92cfa06e, 0xf7a89b28,
+    0x710d1027, 0x146a2b61, 0xbbc366ab, 0xdea45ded, 0x3fe0fb7e,
+    0x5a87c038, 0xf52e8df2, 0x9049b6b4, 0xecd6c695, 0x89b1fdd3,
+    0x2618b019, 0x437f8b5f, 0xa23b2dcc, 0xc75c168a, 0x68f55b40,
+    0x0d926006, 0x91cbbb02, 0xf4ac8044, 0x5b05cd8e, 0x3e62f6c8,
+    0xdf26505b, 0xba416b1d, 0x15e826d7, 0x708f1d91, 0x0c106db0,
+    0x697756f6, 0xc6de1b3c, 0xa3b9207a, 0x42fd86e9, 0x279abdaf,
+    0x8833f065, 0xed54cb23, 0x5e09e03a, 0x3b6edb7c, 0x94c796b6,
+    0xf1a0adf0, 0x10e40b63, 0x75833025, 0xda2a7def, 0xbf4d46a9,
+    0xc3d23688, 0xa6b50dce, 0x091c4004, 0x6c7b7b42, 0x8d3fddd1,
+    0xe858e697, 0x47f1ab5d, 0x2296901b, 0xbecf4b1f, 0xdba87059,
+    0x74013d93, 0x116606d5, 0xf022a046, 0x95459b00, 0x3aecd6ca,
+    0x5f8bed8c, 0x23149dad, 0x4673a6eb, 0xe9daeb21, 0x8cbdd067,
+    0x6df976f4, 0x089e4db2, 0xa7370078, 0xc2503b3e, 0x44f5b031,
+    0x21928b77, 0x8e3bc6bd, 0xeb5cfdfb, 0x0a185b68, 0x6f7f602e,
+    0xc0d62de4, 0xa5b116a2, 0xd92e6683, 0xbc495dc5, 0x13e0100f,
+    0x76872b49, 0x97c38dda, 0xf2a4b69c, 0x5d0dfb56, 0x386ac010,
+    0xa4331b14, 0xc1542052, 0x6efd6d98, 0x0b9a56de, 0xeadef04d,
+    0x8fb9cb0b, 0x201086c1, 0x4577bd87, 0x39e8cda6, 0x5c8ff6e0,
+    0xf326bb2a, 0x9641806c, 0x770526ff, 0x12621db9, 0xbdcb5073,
+    0xd8ac6b35},
+   {0x00000000, 0xd7e28058, 0x74b406f1, 0xa35686a9, 0xe9680de2,
+    0x3e8a8dba, 0x9ddc0b13, 0x4a3e8b4b, 0x09a11d85, 0xde439ddd,
+    0x7d151b74, 0xaaf79b2c, 0xe0c91067, 0x372b903f, 0x947d1696,
+    0x439f96ce, 0x13423b0a, 0xc4a0bb52, 0x67f63dfb, 0xb014bda3,
+    0xfa2a36e8, 0x2dc8b6b0, 0x8e9e3019, 0x597cb041, 0x1ae3268f,
+    0xcd01a6d7, 0x6e57207e, 0xb9b5a026, 0xf38b2b6d, 0x2469ab35,
+    0x873f2d9c, 0x50ddadc4, 0x26847614, 0xf166f64c, 0x523070e5,
+    0x85d2f0bd, 0xcfec7bf6, 0x180efbae, 0xbb587d07, 0x6cbafd5f,
+    0x2f256b91, 0xf8c7ebc9, 0x5b916d60, 0x8c73ed38, 0xc64d6673,
+    0x11afe62b, 0xb2f96082, 0x651be0da, 0x35c64d1e, 0xe224cd46,
+    0x41724bef, 0x9690cbb7, 0xdcae40fc, 0x0b4cc0a4, 0xa81a460d,
+    0x7ff8c655, 0x3c67509b, 0xeb85d0c3, 0x48d3566a, 0x9f31d632,
+    0xd50f5d79, 0x02eddd21, 0xa1bb5b88, 0x7659dbd0, 0x4d08ec28,
+    0x9aea6c70, 0x39bcead9, 0xee5e6a81, 0xa460e1ca, 0x73826192,
+    0xd0d4e73b, 0x07366763, 0x44a9f1ad, 0x934b71f5, 0x301df75c,
+    0xe7ff7704, 0xadc1fc4f, 0x7a237c17, 0xd975fabe, 0x0e977ae6,
+    0x5e4ad722, 0x89a8577a, 0x2afed1d3, 0xfd1c518b, 0xb722dac0,
+    0x60c05a98, 0xc396dc31, 0x14745c69, 0x57ebcaa7, 0x80094aff,
+    0x235fcc56, 0xf4bd4c0e, 0xbe83c745, 0x6961471d, 0xca37c1b4,
+    0x1dd541ec, 0x6b8c9a3c, 0xbc6e1a64, 0x1f389ccd, 0xc8da1c95,
+    0x82e497de, 0x55061786, 0xf650912f, 0x21b21177, 0x622d87b9,
+    0xb5cf07e1, 0x16998148, 0xc17b0110, 0x8b458a5b, 0x5ca70a03,
+    0xfff18caa, 0x28130cf2, 0x78cea136, 0xaf2c216e, 0x0c7aa7c7,
+    0xdb98279f, 0x91a6acd4, 0x46442c8c, 0xe512aa25, 0x32f02a7d,
+    0x716fbcb3, 0xa68d3ceb, 0x05dbba42, 0xd2393a1a, 0x9807b151,
+    0x4fe53109, 0xecb3b7a0, 0x3b5137f8, 0x9a11d850, 0x4df35808,
+    0xeea5dea1, 0x39475ef9, 0x7379d5b2, 0xa49b55ea, 0x07cdd343,
+    0xd02f531b, 0x93b0c5d5, 0x4452458d, 0xe704c324, 0x30e6437c,
+    0x7ad8c837, 0xad3a486f, 0x0e6ccec6, 0xd98e4e9e, 0x8953e35a,
+    0x5eb16302, 0xfde7e5ab, 0x2a0565f3, 0x603beeb8, 0xb7d96ee0,
+    0x148fe849, 0xc36d6811, 0x80f2fedf, 0x57107e87, 0xf446f82e,
+    0x23a47876, 0x699af33d, 0xbe787365, 0x1d2ef5cc, 0xcacc7594,
+    0xbc95ae44, 0x6b772e1c, 0xc821a8b5, 0x1fc328ed, 0x55fda3a6,
+    0x821f23fe, 0x2149a557, 0xf6ab250f, 0xb534b3c1, 0x62d63399,
+    0xc180b530, 0x16623568, 0x5c5cbe23, 0x8bbe3e7b, 0x28e8b8d2,
+    0xff0a388a, 0xafd7954e, 0x78351516, 0xdb6393bf, 0x0c8113e7,
+    0x46bf98ac, 0x915d18f4, 0x320b9e5d, 0xe5e91e05, 0xa67688cb,
+    0x71940893, 0xd2c28e3a, 0x05200e62, 0x4f1e8529, 0x98fc0571,
+    0x3baa83d8, 0xec480380, 0xd7193478, 0x00fbb420, 0xa3ad3289,
+    0x744fb2d1, 0x3e71399a, 0xe993b9c2, 0x4ac53f6b, 0x9d27bf33,
+    0xdeb829fd, 0x095aa9a5, 0xaa0c2f0c, 0x7deeaf54, 0x37d0241f,
+    0xe032a447, 0x436422ee, 0x9486a2b6, 0xc45b0f72, 0x13b98f2a,
+    0xb0ef0983, 0x670d89db, 0x2d330290, 0xfad182c8, 0x59870461,
+    0x8e658439, 0xcdfa12f7, 0x1a1892af, 0xb94e1406, 0x6eac945e,
+    0x24921f15, 0xf3709f4d, 0x502619e4, 0x87c499bc, 0xf19d426c,
+    0x267fc234, 0x8529449d, 0x52cbc4c5, 0x18f54f8e, 0xcf17cfd6,
+    0x6c41497f, 0xbba3c927, 0xf83c5fe9, 0x2fdedfb1, 0x8c885918,
+    0x5b6ad940, 0x1154520b, 0xc6b6d253, 0x65e054fa, 0xb202d4a2,
+    0xe2df7966, 0x353df93e, 0x966b7f97, 0x4189ffcf, 0x0bb77484,
+    0xdc55f4dc, 0x7f037275, 0xa8e1f22d, 0xeb7e64e3, 0x3c9ce4bb,
+    0x9fca6212, 0x4828e24a, 0x02166901, 0xd5f4e959, 0x76a26ff0,
+    0xa140efa8},
+   {0x00000000, 0xef52b6e1, 0x05d46b83, 0xea86dd62, 0x0ba8d706,
+    0xe4fa61e7, 0x0e7cbc85, 0xe12e0a64, 0x1751ae0c, 0xf80318ed,
+    0x1285c58f, 0xfdd7736e, 0x1cf9790a, 0xf3abcfeb, 0x192d1289,
+    0xf67fa468, 0x2ea35c18, 0xc1f1eaf9, 0x2b77379b, 0xc425817a,
+    0x250b8b1e, 0xca593dff, 0x20dfe09d, 0xcf8d567c, 0x39f2f214,
+    0xd6a044f5, 0x3c269997, 0xd3742f76, 0x325a2512, 0xdd0893f3,
+    0x378e4e91, 0xd8dcf870, 0x5d46b830, 0xb2140ed1, 0x5892d3b3,
+    0xb7c06552, 0x56ee6f36, 0xb9bcd9d7, 0x533a04b5, 0xbc68b254,
+    0x4a17163c, 0xa545a0dd, 0x4fc37dbf, 0xa091cb5e, 0x41bfc13a,
+    0xaeed77db, 0x446baab9, 0xab391c58, 0x73e5e428, 0x9cb752c9,
+    0x76318fab, 0x9963394a, 0x784d332e, 0x971f85cf, 0x7d9958ad,
+    0x92cbee4c, 0x64b44a24, 0x8be6fcc5, 0x616021a7, 0x8e329746,
+    0x6f1c9d22, 0x804e2bc3, 0x6ac8f6a1, 0x859a4040, 0xba8d7060,
+    0x55dfc681, 0xbf591be3, 0x500bad02, 0xb125a766, 0x5e771187,
+    0xb4f1cce5, 0x5ba37a04, 0xaddcde6c, 0x428e688d, 0xa808b5ef,
+    0x475a030e, 0xa674096a, 0x4926bf8b, 0xa3a062e9, 0x4cf2d408,
+    0x942e2c78, 0x7b7c9a99, 0x91fa47fb, 0x7ea8f11a, 0x9f86fb7e,
+    0x70d44d9f, 0x9a5290fd, 0x7500261c, 0x837f8274, 0x6c2d3495,
+    0x86abe9f7, 0x69f95f16, 0x88d75572, 0x6785e393, 0x8d033ef1,
+    0x62518810, 0xe7cbc850, 0x08997eb1, 0xe21fa3d3, 0x0d4d1532,
+    0xec631f56, 0x0331a9b7, 0xe9b774d5, 0x06e5c234, 0xf09a665c,
+    0x1fc8d0bd, 0xf54e0ddf, 0x1a1cbb3e, 0xfb32b15a, 0x146007bb,
+    0xfee6dad9, 0x11b46c38, 0xc9689448, 0x263a22a9, 0xccbcffcb,
+    0x23ee492a, 0xc2c0434e, 0x2d92f5af, 0xc71428cd, 0x28469e2c,
+    0xde393a44, 0x316b8ca5, 0xdbed51c7, 0x34bfe726, 0xd591ed42,
+    0x3ac35ba3, 0xd04586c1, 0x3f173020, 0xae6be681, 0x41395060,
+    0xabbf8d02, 0x44ed3be3, 0xa5c33187, 0x4a918766, 0xa0175a04,
+    0x4f45ece5, 0xb93a488d, 0x5668fe6c, 0xbcee230e, 0x53bc95ef,
+    0xb2929f8b, 0x5dc0296a, 0xb746f408, 0x581442e9, 0x80c8ba99,
+    0x6f9a0c78, 0x851cd11a, 0x6a4e67fb, 0x8b606d9f, 0x6432db7e,
+    0x8eb4061c, 0x61e6b0fd, 0x97991495, 0x78cba274, 0x924d7f16,
+    0x7d1fc9f7, 0x9c31c393, 0x73637572, 0x99e5a810, 0x76b71ef1,
+    0xf32d5eb1, 0x1c7fe850, 0xf6f93532, 0x19ab83d3, 0xf88589b7,
+    0x17d73f56, 0xfd51e234, 0x120354d5, 0xe47cf0bd, 0x0b2e465c,
+    0xe1a89b3e, 0x0efa2ddf, 0xefd427bb, 0x0086915a, 0xea004c38,
+    0x0552fad9, 0xdd8e02a9, 0x32dcb448, 0xd85a692a, 0x3708dfcb,
+    0xd626d5af, 0x3974634e, 0xd3f2be2c, 0x3ca008cd, 0xcadfaca5,
+    0x258d1a44, 0xcf0bc726, 0x205971c7, 0xc1777ba3, 0x2e25cd42,
+    0xc4a31020, 0x2bf1a6c1, 0x14e696e1, 0xfbb42000, 0x1132fd62,
+    0xfe604b83, 0x1f4e41e7, 0xf01cf706, 0x1a9a2a64, 0xf5c89c85,
+    0x03b738ed, 0xece58e0c, 0x0663536e, 0xe931e58f, 0x081fefeb,
+    0xe74d590a, 0x0dcb8468, 0xe2993289, 0x3a45caf9, 0xd5177c18,
+    0x3f91a17a, 0xd0c3179b, 0x31ed1dff, 0xdebfab1e, 0x3439767c,
+    0xdb6bc09d, 0x2d1464f5, 0xc246d214, 0x28c00f76, 0xc792b997,
+    0x26bcb3f3, 0xc9ee0512, 0x2368d870, 0xcc3a6e91, 0x49a02ed1,
+    0xa6f29830, 0x4c744552, 0xa326f3b3, 0x4208f9d7, 0xad5a4f36,
+    0x47dc9254, 0xa88e24b5, 0x5ef180dd, 0xb1a3363c, 0x5b25eb5e,
+    0xb4775dbf, 0x555957db, 0xba0be13a, 0x508d3c58, 0xbfdf8ab9,
+    0x670372c9, 0x8851c428, 0x62d7194a, 0x8d85afab, 0x6caba5cf,
+    0x83f9132e, 0x697fce4c, 0x862d78ad, 0x7052dcc5, 0x9f006a24,
+    0x7586b746, 0x9ad401a7, 0x7bfa0bc3, 0x94a8bd22, 0x7e2e6040,
+    0x917cd6a1},
+   {0x00000000, 0x87a6cb43, 0xd43c90c7, 0x539a5b84, 0x730827cf,
+    0xf4aeec8c, 0xa734b708, 0x20927c4b, 0xe6104f9e, 0x61b684dd,
+    0x322cdf59, 0xb58a141a, 0x95186851, 0x12bea312, 0x4124f896,
+    0xc68233d5, 0x1751997d, 0x90f7523e, 0xc36d09ba, 0x44cbc2f9,
+    0x6459beb2, 0xe3ff75f1, 0xb0652e75, 0x37c3e536, 0xf141d6e3,
+    0x76e71da0, 0x257d4624, 0xa2db8d67, 0x8249f12c, 0x05ef3a6f,
+    0x567561eb, 0xd1d3aaa8, 0x2ea332fa, 0xa905f9b9, 0xfa9fa23d,
+    0x7d39697e, 0x5dab1535, 0xda0dde76, 0x899785f2, 0x0e314eb1,
+    0xc8b37d64, 0x4f15b627, 0x1c8feda3, 0x9b2926e0, 0xbbbb5aab,
+    0x3c1d91e8, 0x6f87ca6c, 0xe821012f, 0x39f2ab87, 0xbe5460c4,
+    0xedce3b40, 0x6a68f003, 0x4afa8c48, 0xcd5c470b, 0x9ec61c8f,
+    0x1960d7cc, 0xdfe2e419, 0x58442f5a, 0x0bde74de, 0x8c78bf9d,
+    0xaceac3d6, 0x2b4c0895, 0x78d65311, 0xff709852, 0x5d4665f4,
+    0xdae0aeb7, 0x897af533, 0x0edc3e70, 0x2e4e423b, 0xa9e88978,
+    0xfa72d2fc, 0x7dd419bf, 0xbb562a6a, 0x3cf0e129, 0x6f6abaad,
+    0xe8cc71ee, 0xc85e0da5, 0x4ff8c6e6, 0x1c629d62, 0x9bc45621,
+    0x4a17fc89, 0xcdb137ca, 0x9e2b6c4e, 0x198da70d, 0x391fdb46,
+    0xbeb91005, 0xed234b81, 0x6a8580c2, 0xac07b317, 0x2ba17854,
+    0x783b23d0, 0xff9de893, 0xdf0f94d8, 0x58a95f9b, 0x0b33041f,
+    0x8c95cf5c, 0x73e5570e, 0xf4439c4d, 0xa7d9c7c9, 0x207f0c8a,
+    0x00ed70c1, 0x874bbb82, 0xd4d1e006, 0x53772b45, 0x95f51890,
+    0x1253d3d3, 0x41c98857, 0xc66f4314, 0xe6fd3f5f, 0x615bf41c,
+    0x32c1af98, 0xb56764db, 0x64b4ce73, 0xe3120530, 0xb0885eb4,
+    0x372e95f7, 0x17bce9bc, 0x901a22ff, 0xc380797b, 0x4426b238,
+    0x82a481ed, 0x05024aae, 0x5698112a, 0xd13eda69, 0xf1aca622,
+    0x760a6d61, 0x259036e5, 0xa236fda6, 0xba8ccbe8, 0x3d2a00ab,
+    0x6eb05b2f, 0xe916906c, 0xc984ec27, 0x4e222764, 0x1db87ce0,
+    0x9a1eb7a3, 0x5c9c8476, 0xdb3a4f35, 0x88a014b1, 0x0f06dff2,
+    0x2f94a3b9, 0xa83268fa, 0xfba8337e, 0x7c0ef83d, 0xaddd5295,
+    0x2a7b99d6, 0x79e1c252, 0xfe470911, 0xded5755a, 0x5973be19,
+    0x0ae9e59d, 0x8d4f2ede, 0x4bcd1d0b, 0xcc6bd648, 0x9ff18dcc,
+    0x1857468f, 0x38c53ac4, 0xbf63f187, 0xecf9aa03, 0x6b5f6140,
+    0x942ff912, 0x13893251, 0x401369d5, 0xc7b5a296, 0xe727dedd,
+    0x6081159e, 0x331b4e1a, 0xb4bd8559, 0x723fb68c, 0xf5997dcf,
+    0xa603264b, 0x21a5ed08, 0x01379143, 0x86915a00, 0xd50b0184,
+    0x52adcac7, 0x837e606f, 0x04d8ab2c, 0x5742f0a8, 0xd0e43beb,
+    0xf07647a0, 0x77d08ce3, 0x244ad767, 0xa3ec1c24, 0x656e2ff1,
+    0xe2c8e4b2, 0xb152bf36, 0x36f47475, 0x1666083e, 0x91c0c37d,
+    0xc25a98f9, 0x45fc53ba, 0xe7caae1c, 0x606c655f, 0x33f63edb,
+    0xb450f598, 0x94c289d3, 0x13644290, 0x40fe1914, 0xc758d257,
+    0x01dae182, 0x867c2ac1, 0xd5e67145, 0x5240ba06, 0x72d2c64d,
+    0xf5740d0e, 0xa6ee568a, 0x21489dc9, 0xf09b3761, 0x773dfc22,
+    0x24a7a7a6, 0xa3016ce5, 0x839310ae, 0x0435dbed, 0x57af8069,
+    0xd0094b2a, 0x168b78ff, 0x912db3bc, 0xc2b7e838, 0x4511237b,
+    0x65835f30, 0xe2259473, 0xb1bfcff7, 0x361904b4, 0xc9699ce6,
+    0x4ecf57a5, 0x1d550c21, 0x9af3c762, 0xba61bb29, 0x3dc7706a,
+    0x6e5d2bee, 0xe9fbe0ad, 0x2f79d378, 0xa8df183b, 0xfb4543bf,
+    0x7ce388fc, 0x5c71f4b7, 0xdbd73ff4, 0x884d6470, 0x0febaf33,
+    0xde38059b, 0x599eced8, 0x0a04955c, 0x8da25e1f, 0xad302254,
+    0x2a96e917, 0x790cb293, 0xfeaa79d0, 0x38284a05, 0xbf8e8146,
+    0xec14dac2, 0x6bb21181, 0x4b206dca, 0xcc86a689, 0x9f1cfd0d,
+    0x18ba364e}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x0000000000000000, 0x43cba68700000000, 0xc7903cd400000000,
+    0x845b9a5300000000, 0xcf27087300000000, 0x8cecaef400000000,
+    0x08b734a700000000, 0x4b7c922000000000, 0x9e4f10e600000000,
+    0xdd84b66100000000, 0x59df2c3200000000, 0x1a148ab500000000,
+    0x5168189500000000, 0x12a3be1200000000, 0x96f8244100000000,
+    0xd53382c600000000, 0x7d99511700000000, 0x3e52f79000000000,
+    0xba096dc300000000, 0xf9c2cb4400000000, 0xb2be596400000000,
+    0xf175ffe300000000, 0x752e65b000000000, 0x36e5c33700000000,
+    0xe3d641f100000000, 0xa01de77600000000, 0x24467d2500000000,
+    0x678ddba200000000, 0x2cf1498200000000, 0x6f3aef0500000000,
+    0xeb61755600000000, 0xa8aad3d100000000, 0xfa32a32e00000000,
+    0xb9f905a900000000, 0x3da29ffa00000000, 0x7e69397d00000000,
+    0x3515ab5d00000000, 0x76de0dda00000000, 0xf285978900000000,
+    0xb14e310e00000000, 0x647db3c800000000, 0x27b6154f00000000,
+    0xa3ed8f1c00000000, 0xe026299b00000000, 0xab5abbbb00000000,
+    0xe8911d3c00000000, 0x6cca876f00000000, 0x2f0121e800000000,
+    0x87abf23900000000, 0xc46054be00000000, 0x403bceed00000000,
+    0x03f0686a00000000, 0x488cfa4a00000000, 0x0b475ccd00000000,
+    0x8f1cc69e00000000, 0xccd7601900000000, 0x19e4e2df00000000,
+    0x5a2f445800000000, 0xde74de0b00000000, 0x9dbf788c00000000,
+    0xd6c3eaac00000000, 0x95084c2b00000000, 0x1153d67800000000,
+    0x529870ff00000000, 0xf465465d00000000, 0xb7aee0da00000000,
+    0x33f57a8900000000, 0x703edc0e00000000, 0x3b424e2e00000000,
+    0x7889e8a900000000, 0xfcd272fa00000000, 0xbf19d47d00000000,
+    0x6a2a56bb00000000, 0x29e1f03c00000000, 0xadba6a6f00000000,
+    0xee71cce800000000, 0xa50d5ec800000000, 0xe6c6f84f00000000,
+    0x629d621c00000000, 0x2156c49b00000000, 0x89fc174a00000000,
+    0xca37b1cd00000000, 0x4e6c2b9e00000000, 0x0da78d1900000000,
+    0x46db1f3900000000, 0x0510b9be00000000, 0x814b23ed00000000,
+    0xc280856a00000000, 0x17b307ac00000000, 0x5478a12b00000000,
+    0xd0233b7800000000, 0x93e89dff00000000, 0xd8940fdf00000000,
+    0x9b5fa95800000000, 0x1f04330b00000000, 0x5ccf958c00000000,
+    0x0e57e57300000000, 0x4d9c43f400000000, 0xc9c7d9a700000000,
+    0x8a0c7f2000000000, 0xc170ed0000000000, 0x82bb4b8700000000,
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+    0xca6d204b00000000, 0x89a686cc00000000, 0x0dfd1c9f00000000,
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+    0x0169160200000000, 0x59e9f4d500000000, 0xf06fa27600000000,
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+    0xa46fe67c00000000, 0xf83e710900000000, 0x2cd4029200000000,
+    0x11ede7e400000000, 0xc507947f00000000, 0x6b9f2d0900000000,
+    0xbf755e9200000000, 0x824cbbe400000000, 0x56a6c87f00000000,
+    0xde7dc80900000000, 0x0a97bb9200000000, 0x37ae5ee400000000,
+    0xe3442d7f00000000, 0x4ddc940900000000, 0x9936e79200000000,
+    0xa40f02e400000000, 0x70e5717f00000000, 0xb4b8030800000000,
+    0x6052709300000000, 0x5d6b95e500000000, 0x8981e67e00000000,
+    0x27195f0800000000, 0xf3f32c9300000000, 0xcecac9e500000000,
+    0x1a20ba7e00000000, 0x92fbba0800000000, 0x4611c99300000000,
+    0x7b282ce500000000, 0xafc25f7e00000000, 0x015ae60800000000,
+    0xd5b0959300000000, 0xe88970e500000000, 0x3c63037e00000000,
+    0x502b5e0e00000000, 0x84c12d9500000000, 0xb9f8c8e300000000,
+    0x6d12bb7800000000, 0xc38a020e00000000, 0x1760719500000000,
+    0x2a5994e300000000, 0xfeb3e77800000000, 0x7668e70e00000000,
+    0xa282949500000000, 0x9fbb71e300000000, 0x4b51027800000000,
+    0xe5c9bb0e00000000, 0x3123c89500000000, 0x0c1a2de300000000,
+    0xd8f05e7800000000, 0x1cad2c0f00000000, 0xc8475f9400000000,
+    0xf57ebae200000000, 0x2194c97900000000, 0x8f0c700f00000000,
+    0x5be6039400000000, 0x66dfe6e200000000, 0xb235957900000000,
+    0x3aee950f00000000, 0xee04e69400000000, 0xd33d03e200000000,
+    0x07d7707900000000, 0xa94fc90f00000000, 0x7da5ba9400000000,
+    0x409c5fe200000000, 0x94762c7900000000, 0xc827bb0c00000000,
+    0x1ccdc89700000000, 0x21f42de100000000, 0xf51e5e7a00000000,
+    0x5b86e70c00000000, 0x8f6c949700000000, 0xb25571e100000000,
+    0x66bf027a00000000, 0xee64020c00000000, 0x3a8e719700000000,
+    0x07b794e100000000, 0xd35de77a00000000, 0x7dc55e0c00000000,
+    0xa92f2d9700000000, 0x9416c8e100000000, 0x40fcbb7a00000000,
+    0x84a1c90d00000000, 0x504bba9600000000, 0x6d725fe000000000,
+    0xb9982c7b00000000, 0x1700950d00000000, 0xc3eae69600000000,
+    0xfed303e000000000, 0x2a39707b00000000, 0xa2e2700d00000000,
+    0x7608039600000000, 0x4b31e6e000000000, 0x9fdb957b00000000,
+    0x31432c0d00000000, 0xe5a95f9600000000, 0xd890bae000000000,
+    0x0c7ac97b00000000},
+   {0x0000000000000000, 0x2765258100000000, 0x0fcc3bd900000000,
+    0x28a91e5800000000, 0x5f9e066900000000, 0x78fb23e800000000,
+    0x50523db000000000, 0x7737183100000000, 0xbe3c0dd200000000,
+    0x9959285300000000, 0xb1f0360b00000000, 0x9695138a00000000,
+    0xe1a20bbb00000000, 0xc6c72e3a00000000, 0xee6e306200000000,
+    0xc90b15e300000000, 0x3d7f6b7f00000000, 0x1a1a4efe00000000,
+    0x32b350a600000000, 0x15d6752700000000, 0x62e16d1600000000,
+    0x4584489700000000, 0x6d2d56cf00000000, 0x4a48734e00000000,
+    0x834366ad00000000, 0xa426432c00000000, 0x8c8f5d7400000000,
+    0xabea78f500000000, 0xdcdd60c400000000, 0xfbb8454500000000,
+    0xd3115b1d00000000, 0xf4747e9c00000000, 0x7afed6fe00000000,
+    0x5d9bf37f00000000, 0x7532ed2700000000, 0x5257c8a600000000,
+    0x2560d09700000000, 0x0205f51600000000, 0x2aaceb4e00000000,
+    0x0dc9cecf00000000, 0xc4c2db2c00000000, 0xe3a7fead00000000,
+    0xcb0ee0f500000000, 0xec6bc57400000000, 0x9b5cdd4500000000,
+    0xbc39f8c400000000, 0x9490e69c00000000, 0xb3f5c31d00000000,
+    0x4781bd8100000000, 0x60e4980000000000, 0x484d865800000000,
+    0x6f28a3d900000000, 0x181fbbe800000000, 0x3f7a9e6900000000,
+    0x17d3803100000000, 0x30b6a5b000000000, 0xf9bdb05300000000,
+    0xded895d200000000, 0xf6718b8a00000000, 0xd114ae0b00000000,
+    0xa623b63a00000000, 0x814693bb00000000, 0xa9ef8de300000000,
+    0x8e8aa86200000000, 0xb5fadc2600000000, 0x929ff9a700000000,
+    0xba36e7ff00000000, 0x9d53c27e00000000, 0xea64da4f00000000,
+    0xcd01ffce00000000, 0xe5a8e19600000000, 0xc2cdc41700000000,
+    0x0bc6d1f400000000, 0x2ca3f47500000000, 0x040aea2d00000000,
+    0x236fcfac00000000, 0x5458d79d00000000, 0x733df21c00000000,
+    0x5b94ec4400000000, 0x7cf1c9c500000000, 0x8885b75900000000,
+    0xafe092d800000000, 0x87498c8000000000, 0xa02ca90100000000,
+    0xd71bb13000000000, 0xf07e94b100000000, 0xd8d78ae900000000,
+    0xffb2af6800000000, 0x36b9ba8b00000000, 0x11dc9f0a00000000,
+    0x3975815200000000, 0x1e10a4d300000000, 0x6927bce200000000,
+    0x4e42996300000000, 0x66eb873b00000000, 0x418ea2ba00000000,
+    0xcf040ad800000000, 0xe8612f5900000000, 0xc0c8310100000000,
+    0xe7ad148000000000, 0x909a0cb100000000, 0xb7ff293000000000,
+    0x9f56376800000000, 0xb83312e900000000, 0x7138070a00000000,
+    0x565d228b00000000, 0x7ef43cd300000000, 0x5991195200000000,
+    0x2ea6016300000000, 0x09c324e200000000, 0x216a3aba00000000,
+    0x060f1f3b00000000, 0xf27b61a700000000, 0xd51e442600000000,
+    0xfdb75a7e00000000, 0xdad27fff00000000, 0xade567ce00000000,
+    0x8a80424f00000000, 0xa2295c1700000000, 0x854c799600000000,
+    0x4c476c7500000000, 0x6b2249f400000000, 0x438b57ac00000000,
+    0x64ee722d00000000, 0x13d96a1c00000000, 0x34bc4f9d00000000,
+    0x1c1551c500000000, 0x3b70744400000000, 0x6af5b94d00000000,
+    0x4d909ccc00000000, 0x6539829400000000, 0x425ca71500000000,
+    0x356bbf2400000000, 0x120e9aa500000000, 0x3aa784fd00000000,
+    0x1dc2a17c00000000, 0xd4c9b49f00000000, 0xf3ac911e00000000,
+    0xdb058f4600000000, 0xfc60aac700000000, 0x8b57b2f600000000,
+    0xac32977700000000, 0x849b892f00000000, 0xa3feacae00000000,
+    0x578ad23200000000, 0x70eff7b300000000, 0x5846e9eb00000000,
+    0x7f23cc6a00000000, 0x0814d45b00000000, 0x2f71f1da00000000,
+    0x07d8ef8200000000, 0x20bdca0300000000, 0xe9b6dfe000000000,
+    0xced3fa6100000000, 0xe67ae43900000000, 0xc11fc1b800000000,
+    0xb628d98900000000, 0x914dfc0800000000, 0xb9e4e25000000000,
+    0x9e81c7d100000000, 0x100b6fb300000000, 0x376e4a3200000000,
+    0x1fc7546a00000000, 0x38a271eb00000000, 0x4f9569da00000000,
+    0x68f04c5b00000000, 0x4059520300000000, 0x673c778200000000,
+    0xae37626100000000, 0x895247e000000000, 0xa1fb59b800000000,
+    0x869e7c3900000000, 0xf1a9640800000000, 0xd6cc418900000000,
+    0xfe655fd100000000, 0xd9007a5000000000, 0x2d7404cc00000000,
+    0x0a11214d00000000, 0x22b83f1500000000, 0x05dd1a9400000000,
+    0x72ea02a500000000, 0x558f272400000000, 0x7d26397c00000000,
+    0x5a431cfd00000000, 0x9348091e00000000, 0xb42d2c9f00000000,
+    0x9c8432c700000000, 0xbbe1174600000000, 0xccd60f7700000000,
+    0xebb32af600000000, 0xc31a34ae00000000, 0xe47f112f00000000,
+    0xdf0f656b00000000, 0xf86a40ea00000000, 0xd0c35eb200000000,
+    0xf7a67b3300000000, 0x8091630200000000, 0xa7f4468300000000,
+    0x8f5d58db00000000, 0xa8387d5a00000000, 0x613368b900000000,
+    0x46564d3800000000, 0x6eff536000000000, 0x499a76e100000000,
+    0x3ead6ed000000000, 0x19c84b5100000000, 0x3161550900000000,
+    0x1604708800000000, 0xe2700e1400000000, 0xc5152b9500000000,
+    0xedbc35cd00000000, 0xcad9104c00000000, 0xbdee087d00000000,
+    0x9a8b2dfc00000000, 0xb22233a400000000, 0x9547162500000000,
+    0x5c4c03c600000000, 0x7b29264700000000, 0x5380381f00000000,
+    0x74e51d9e00000000, 0x03d205af00000000, 0x24b7202e00000000,
+    0x0c1e3e7600000000, 0x2b7b1bf700000000, 0xa5f1b39500000000,
+    0x8294961400000000, 0xaa3d884c00000000, 0x8d58adcd00000000,
+    0xfa6fb5fc00000000, 0xdd0a907d00000000, 0xf5a38e2500000000,
+    0xd2c6aba400000000, 0x1bcdbe4700000000, 0x3ca89bc600000000,
+    0x1401859e00000000, 0x3364a01f00000000, 0x4453b82e00000000,
+    0x63369daf00000000, 0x4b9f83f700000000, 0x6cfaa67600000000,
+    0x988ed8ea00000000, 0xbfebfd6b00000000, 0x9742e33300000000,
+    0xb027c6b200000000, 0xc710de8300000000, 0xe075fb0200000000,
+    0xc8dce55a00000000, 0xefb9c0db00000000, 0x26b2d53800000000,
+    0x01d7f0b900000000, 0x297eeee100000000, 0x0e1bcb6000000000,
+    0x792cd35100000000, 0x5e49f6d000000000, 0x76e0e88800000000,
+    0x5185cd0900000000}};
+
+#else /* W == 4 */
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0x9ba54c6f, 0xec3b9e9f, 0x779ed2f0, 0x03063b7f,
+    0x98a37710, 0xef3da5e0, 0x7498e98f, 0x060c76fe, 0x9da93a91,
+    0xea37e861, 0x7192a40e, 0x050a4d81, 0x9eaf01ee, 0xe931d31e,
+    0x72949f71, 0x0c18edfc, 0x97bda193, 0xe0237363, 0x7b863f0c,
+    0x0f1ed683, 0x94bb9aec, 0xe325481c, 0x78800473, 0x0a149b02,
+    0x91b1d76d, 0xe62f059d, 0x7d8a49f2, 0x0912a07d, 0x92b7ec12,
+    0xe5293ee2, 0x7e8c728d, 0x1831dbf8, 0x83949797, 0xf40a4567,
+    0x6faf0908, 0x1b37e087, 0x8092ace8, 0xf70c7e18, 0x6ca93277,
+    0x1e3dad06, 0x8598e169, 0xf2063399, 0x69a37ff6, 0x1d3b9679,
+    0x869eda16, 0xf10008e6, 0x6aa54489, 0x14293604, 0x8f8c7a6b,
+    0xf812a89b, 0x63b7e4f4, 0x172f0d7b, 0x8c8a4114, 0xfb1493e4,
+    0x60b1df8b, 0x122540fa, 0x89800c95, 0xfe1ede65, 0x65bb920a,
+    0x11237b85, 0x8a8637ea, 0xfd18e51a, 0x66bda975, 0x3063b7f0,
+    0xabc6fb9f, 0xdc58296f, 0x47fd6500, 0x33658c8f, 0xa8c0c0e0,
+    0xdf5e1210, 0x44fb5e7f, 0x366fc10e, 0xadca8d61, 0xda545f91,
+    0x41f113fe, 0x3569fa71, 0xaeccb61e, 0xd95264ee, 0x42f72881,
+    0x3c7b5a0c, 0xa7de1663, 0xd040c493, 0x4be588fc, 0x3f7d6173,
+    0xa4d82d1c, 0xd346ffec, 0x48e3b383, 0x3a772cf2, 0xa1d2609d,
+    0xd64cb26d, 0x4de9fe02, 0x3971178d, 0xa2d45be2, 0xd54a8912,
+    0x4eefc57d, 0x28526c08, 0xb3f72067, 0xc469f297, 0x5fccbef8,
+    0x2b545777, 0xb0f11b18, 0xc76fc9e8, 0x5cca8587, 0x2e5e1af6,
+    0xb5fb5699, 0xc2658469, 0x59c0c806, 0x2d582189, 0xb6fd6de6,
+    0xc163bf16, 0x5ac6f379, 0x244a81f4, 0xbfefcd9b, 0xc8711f6b,
+    0x53d45304, 0x274cba8b, 0xbce9f6e4, 0xcb772414, 0x50d2687b,
+    0x2246f70a, 0xb9e3bb65, 0xce7d6995, 0x55d825fa, 0x2140cc75,
+    0xbae5801a, 0xcd7b52ea, 0x56de1e85, 0x60c76fe0, 0xfb62238f,
+    0x8cfcf17f, 0x1759bd10, 0x63c1549f, 0xf86418f0, 0x8ffaca00,
+    0x145f866f, 0x66cb191e, 0xfd6e5571, 0x8af08781, 0x1155cbee,
+    0x65cd2261, 0xfe686e0e, 0x89f6bcfe, 0x1253f091, 0x6cdf821c,
+    0xf77ace73, 0x80e41c83, 0x1b4150ec, 0x6fd9b963, 0xf47cf50c,
+    0x83e227fc, 0x18476b93, 0x6ad3f4e2, 0xf176b88d, 0x86e86a7d,
+    0x1d4d2612, 0x69d5cf9d, 0xf27083f2, 0x85ee5102, 0x1e4b1d6d,
+    0x78f6b418, 0xe353f877, 0x94cd2a87, 0x0f6866e8, 0x7bf08f67,
+    0xe055c308, 0x97cb11f8, 0x0c6e5d97, 0x7efac2e6, 0xe55f8e89,
+    0x92c15c79, 0x09641016, 0x7dfcf999, 0xe659b5f6, 0x91c76706,
+    0x0a622b69, 0x74ee59e4, 0xef4b158b, 0x98d5c77b, 0x03708b14,
+    0x77e8629b, 0xec4d2ef4, 0x9bd3fc04, 0x0076b06b, 0x72e22f1a,
+    0xe9476375, 0x9ed9b185, 0x057cfdea, 0x71e41465, 0xea41580a,
+    0x9ddf8afa, 0x067ac695, 0x50a4d810, 0xcb01947f, 0xbc9f468f,
+    0x273a0ae0, 0x53a2e36f, 0xc807af00, 0xbf997df0, 0x243c319f,
+    0x56a8aeee, 0xcd0de281, 0xba933071, 0x21367c1e, 0x55ae9591,
+    0xce0bd9fe, 0xb9950b0e, 0x22304761, 0x5cbc35ec, 0xc7197983,
+    0xb087ab73, 0x2b22e71c, 0x5fba0e93, 0xc41f42fc, 0xb381900c,
+    0x2824dc63, 0x5ab04312, 0xc1150f7d, 0xb68bdd8d, 0x2d2e91e2,
+    0x59b6786d, 0xc2133402, 0xb58de6f2, 0x2e28aa9d, 0x489503e8,
+    0xd3304f87, 0xa4ae9d77, 0x3f0bd118, 0x4b933897, 0xd03674f8,
+    0xa7a8a608, 0x3c0dea67, 0x4e997516, 0xd53c3979, 0xa2a2eb89,
+    0x3907a7e6, 0x4d9f4e69, 0xd63a0206, 0xa1a4d0f6, 0x3a019c99,
+    0x448dee14, 0xdf28a27b, 0xa8b6708b, 0x33133ce4, 0x478bd56b,
+    0xdc2e9904, 0xabb04bf4, 0x3015079b, 0x428198ea, 0xd924d485,
+    0xaeba0675, 0x351f4a1a, 0x4187a395, 0xda22effa, 0xadbc3d0a,
+    0x36197165},
+   {0x00000000, 0xc18edfc0, 0x586cb9c1, 0x99e26601, 0xb0d97382,
+    0x7157ac42, 0xe8b5ca43, 0x293b1583, 0xbac3e145, 0x7b4d3e85,
+    0xe2af5884, 0x23218744, 0x0a1a92c7, 0xcb944d07, 0x52762b06,
+    0x93f8f4c6, 0xaef6c4cb, 0x6f781b0b, 0xf69a7d0a, 0x3714a2ca,
+    0x1e2fb749, 0xdfa16889, 0x46430e88, 0x87cdd148, 0x1435258e,
+    0xd5bbfa4e, 0x4c599c4f, 0x8dd7438f, 0xa4ec560c, 0x656289cc,
+    0xfc80efcd, 0x3d0e300d, 0x869c8fd7, 0x47125017, 0xdef03616,
+    0x1f7ee9d6, 0x3645fc55, 0xf7cb2395, 0x6e294594, 0xafa79a54,
+    0x3c5f6e92, 0xfdd1b152, 0x6433d753, 0xa5bd0893, 0x8c861d10,
+    0x4d08c2d0, 0xd4eaa4d1, 0x15647b11, 0x286a4b1c, 0xe9e494dc,
+    0x7006f2dd, 0xb1882d1d, 0x98b3389e, 0x593de75e, 0xc0df815f,
+    0x01515e9f, 0x92a9aa59, 0x53277599, 0xcac51398, 0x0b4bcc58,
+    0x2270d9db, 0xe3fe061b, 0x7a1c601a, 0xbb92bfda, 0xd64819ef,
+    0x17c6c62f, 0x8e24a02e, 0x4faa7fee, 0x66916a6d, 0xa71fb5ad,
+    0x3efdd3ac, 0xff730c6c, 0x6c8bf8aa, 0xad05276a, 0x34e7416b,
+    0xf5699eab, 0xdc528b28, 0x1ddc54e8, 0x843e32e9, 0x45b0ed29,
+    0x78bedd24, 0xb93002e4, 0x20d264e5, 0xe15cbb25, 0xc867aea6,
+    0x09e97166, 0x900b1767, 0x5185c8a7, 0xc27d3c61, 0x03f3e3a1,
+    0x9a1185a0, 0x5b9f5a60, 0x72a44fe3, 0xb32a9023, 0x2ac8f622,
+    0xeb4629e2, 0x50d49638, 0x915a49f8, 0x08b82ff9, 0xc936f039,
+    0xe00de5ba, 0x21833a7a, 0xb8615c7b, 0x79ef83bb, 0xea17777d,
+    0x2b99a8bd, 0xb27bcebc, 0x73f5117c, 0x5ace04ff, 0x9b40db3f,
+    0x02a2bd3e, 0xc32c62fe, 0xfe2252f3, 0x3fac8d33, 0xa64eeb32,
+    0x67c034f2, 0x4efb2171, 0x8f75feb1, 0x169798b0, 0xd7194770,
+    0x44e1b3b6, 0x856f6c76, 0x1c8d0a77, 0xdd03d5b7, 0xf438c034,
+    0x35b61ff4, 0xac5479f5, 0x6ddaa635, 0x77e1359f, 0xb66fea5f,
+    0x2f8d8c5e, 0xee03539e, 0xc738461d, 0x06b699dd, 0x9f54ffdc,
+    0x5eda201c, 0xcd22d4da, 0x0cac0b1a, 0x954e6d1b, 0x54c0b2db,
+    0x7dfba758, 0xbc757898, 0x25971e99, 0xe419c159, 0xd917f154,
+    0x18992e94, 0x817b4895, 0x40f59755, 0x69ce82d6, 0xa8405d16,
+    0x31a23b17, 0xf02ce4d7, 0x63d41011, 0xa25acfd1, 0x3bb8a9d0,
+    0xfa367610, 0xd30d6393, 0x1283bc53, 0x8b61da52, 0x4aef0592,
+    0xf17dba48, 0x30f36588, 0xa9110389, 0x689fdc49, 0x41a4c9ca,
+    0x802a160a, 0x19c8700b, 0xd846afcb, 0x4bbe5b0d, 0x8a3084cd,
+    0x13d2e2cc, 0xd25c3d0c, 0xfb67288f, 0x3ae9f74f, 0xa30b914e,
+    0x62854e8e, 0x5f8b7e83, 0x9e05a143, 0x07e7c742, 0xc6691882,
+    0xef520d01, 0x2edcd2c1, 0xb73eb4c0, 0x76b06b00, 0xe5489fc6,
+    0x24c64006, 0xbd242607, 0x7caaf9c7, 0x5591ec44, 0x941f3384,
+    0x0dfd5585, 0xcc738a45, 0xa1a92c70, 0x6027f3b0, 0xf9c595b1,
+    0x384b4a71, 0x11705ff2, 0xd0fe8032, 0x491ce633, 0x889239f3,
+    0x1b6acd35, 0xdae412f5, 0x430674f4, 0x8288ab34, 0xabb3beb7,
+    0x6a3d6177, 0xf3df0776, 0x3251d8b6, 0x0f5fe8bb, 0xced1377b,
+    0x5733517a, 0x96bd8eba, 0xbf869b39, 0x7e0844f9, 0xe7ea22f8,
+    0x2664fd38, 0xb59c09fe, 0x7412d63e, 0xedf0b03f, 0x2c7e6fff,
+    0x05457a7c, 0xc4cba5bc, 0x5d29c3bd, 0x9ca71c7d, 0x2735a3a7,
+    0xe6bb7c67, 0x7f591a66, 0xbed7c5a6, 0x97ecd025, 0x56620fe5,
+    0xcf8069e4, 0x0e0eb624, 0x9df642e2, 0x5c789d22, 0xc59afb23,
+    0x041424e3, 0x2d2f3160, 0xeca1eea0, 0x754388a1, 0xb4cd5761,
+    0x89c3676c, 0x484db8ac, 0xd1afdead, 0x1021016d, 0x391a14ee,
+    0xf894cb2e, 0x6176ad2f, 0xa0f872ef, 0x33008629, 0xf28e59e9,
+    0x6b6c3fe8, 0xaae2e028, 0x83d9f5ab, 0x42572a6b, 0xdbb54c6a,
+    0x1a3b93aa},
+   {0x00000000, 0xefc26b3e, 0x04f5d03d, 0xeb37bb03, 0x09eba07a,
+    0xe629cb44, 0x0d1e7047, 0xe2dc1b79, 0x13d740f4, 0xfc152bca,
+    0x172290c9, 0xf8e0fbf7, 0x1a3ce08e, 0xf5fe8bb0, 0x1ec930b3,
+    0xf10b5b8d, 0x27ae81e8, 0xc86cead6, 0x235b51d5, 0xcc993aeb,
+    0x2e452192, 0xc1874aac, 0x2ab0f1af, 0xc5729a91, 0x3479c11c,
+    0xdbbbaa22, 0x308c1121, 0xdf4e7a1f, 0x3d926166, 0xd2500a58,
+    0x3967b15b, 0xd6a5da65, 0x4f5d03d0, 0xa09f68ee, 0x4ba8d3ed,
+    0xa46ab8d3, 0x46b6a3aa, 0xa974c894, 0x42437397, 0xad8118a9,
+    0x5c8a4324, 0xb348281a, 0x587f9319, 0xb7bdf827, 0x5561e35e,
+    0xbaa38860, 0x51943363, 0xbe56585d, 0x68f38238, 0x8731e906,
+    0x6c065205, 0x83c4393b, 0x61182242, 0x8eda497c, 0x65edf27f,
+    0x8a2f9941, 0x7b24c2cc, 0x94e6a9f2, 0x7fd112f1, 0x901379cf,
+    0x72cf62b6, 0x9d0d0988, 0x763ab28b, 0x99f8d9b5, 0x9eba07a0,
+    0x71786c9e, 0x9a4fd79d, 0x758dbca3, 0x9751a7da, 0x7893cce4,
+    0x93a477e7, 0x7c661cd9, 0x8d6d4754, 0x62af2c6a, 0x89989769,
+    0x665afc57, 0x8486e72e, 0x6b448c10, 0x80733713, 0x6fb15c2d,
+    0xb9148648, 0x56d6ed76, 0xbde15675, 0x52233d4b, 0xb0ff2632,
+    0x5f3d4d0c, 0xb40af60f, 0x5bc89d31, 0xaac3c6bc, 0x4501ad82,
+    0xae361681, 0x41f47dbf, 0xa32866c6, 0x4cea0df8, 0xa7ddb6fb,
+    0x481fddc5, 0xd1e70470, 0x3e256f4e, 0xd512d44d, 0x3ad0bf73,
+    0xd80ca40a, 0x37cecf34, 0xdcf97437, 0x333b1f09, 0xc2304484,
+    0x2df22fba, 0xc6c594b9, 0x2907ff87, 0xcbdbe4fe, 0x24198fc0,
+    0xcf2e34c3, 0x20ec5ffd, 0xf6498598, 0x198beea6, 0xf2bc55a5,
+    0x1d7e3e9b, 0xffa225e2, 0x10604edc, 0xfb57f5df, 0x14959ee1,
+    0xe59ec56c, 0x0a5cae52, 0xe16b1551, 0x0ea97e6f, 0xec756516,
+    0x03b70e28, 0xe880b52b, 0x0742de15, 0xe6050901, 0x09c7623f,
+    0xe2f0d93c, 0x0d32b202, 0xefeea97b, 0x002cc245, 0xeb1b7946,
+    0x04d91278, 0xf5d249f5, 0x1a1022cb, 0xf12799c8, 0x1ee5f2f6,
+    0xfc39e98f, 0x13fb82b1, 0xf8cc39b2, 0x170e528c, 0xc1ab88e9,
+    0x2e69e3d7, 0xc55e58d4, 0x2a9c33ea, 0xc8402893, 0x278243ad,
+    0xccb5f8ae, 0x23779390, 0xd27cc81d, 0x3dbea323, 0xd6891820,
+    0x394b731e, 0xdb976867, 0x34550359, 0xdf62b85a, 0x30a0d364,
+    0xa9580ad1, 0x469a61ef, 0xadaddaec, 0x426fb1d2, 0xa0b3aaab,
+    0x4f71c195, 0xa4467a96, 0x4b8411a8, 0xba8f4a25, 0x554d211b,
+    0xbe7a9a18, 0x51b8f126, 0xb364ea5f, 0x5ca68161, 0xb7913a62,
+    0x5853515c, 0x8ef68b39, 0x6134e007, 0x8a035b04, 0x65c1303a,
+    0x871d2b43, 0x68df407d, 0x83e8fb7e, 0x6c2a9040, 0x9d21cbcd,
+    0x72e3a0f3, 0x99d41bf0, 0x761670ce, 0x94ca6bb7, 0x7b080089,
+    0x903fbb8a, 0x7ffdd0b4, 0x78bf0ea1, 0x977d659f, 0x7c4ade9c,
+    0x9388b5a2, 0x7154aedb, 0x9e96c5e5, 0x75a17ee6, 0x9a6315d8,
+    0x6b684e55, 0x84aa256b, 0x6f9d9e68, 0x805ff556, 0x6283ee2f,
+    0x8d418511, 0x66763e12, 0x89b4552c, 0x5f118f49, 0xb0d3e477,
+    0x5be45f74, 0xb426344a, 0x56fa2f33, 0xb938440d, 0x520fff0e,
+    0xbdcd9430, 0x4cc6cfbd, 0xa304a483, 0x48331f80, 0xa7f174be,
+    0x452d6fc7, 0xaaef04f9, 0x41d8bffa, 0xae1ad4c4, 0x37e20d71,
+    0xd820664f, 0x3317dd4c, 0xdcd5b672, 0x3e09ad0b, 0xd1cbc635,
+    0x3afc7d36, 0xd53e1608, 0x24354d85, 0xcbf726bb, 0x20c09db8,
+    0xcf02f686, 0x2ddeedff, 0xc21c86c1, 0x292b3dc2, 0xc6e956fc,
+    0x104c8c99, 0xff8ee7a7, 0x14b95ca4, 0xfb7b379a, 0x19a72ce3,
+    0xf66547dd, 0x1d52fcde, 0xf29097e0, 0x039bcc6d, 0xec59a753,
+    0x076e1c50, 0xe8ac776e, 0x0a706c17, 0xe5b20729, 0x0e85bc2a,
+    0xe147d714},
+   {0x00000000, 0x177b1443, 0x2ef62886, 0x398d3cc5, 0x5dec510c,
+    0x4a97454f, 0x731a798a, 0x64616dc9, 0xbbd8a218, 0xaca3b65b,
+    0x952e8a9e, 0x82559edd, 0xe634f314, 0xf14fe757, 0xc8c2db92,
+    0xdfb9cfd1, 0xacc04271, 0xbbbb5632, 0x82366af7, 0x954d7eb4,
+    0xf12c137d, 0xe657073e, 0xdfda3bfb, 0xc8a12fb8, 0x1718e069,
+    0x0063f42a, 0x39eec8ef, 0x2e95dcac, 0x4af4b165, 0x5d8fa526,
+    0x640299e3, 0x73798da0, 0x82f182a3, 0x958a96e0, 0xac07aa25,
+    0xbb7cbe66, 0xdf1dd3af, 0xc866c7ec, 0xf1ebfb29, 0xe690ef6a,
+    0x392920bb, 0x2e5234f8, 0x17df083d, 0x00a41c7e, 0x64c571b7,
+    0x73be65f4, 0x4a335931, 0x5d484d72, 0x2e31c0d2, 0x394ad491,
+    0x00c7e854, 0x17bcfc17, 0x73dd91de, 0x64a6859d, 0x5d2bb958,
+    0x4a50ad1b, 0x95e962ca, 0x82927689, 0xbb1f4a4c, 0xac645e0f,
+    0xc80533c6, 0xdf7e2785, 0xe6f31b40, 0xf1880f03, 0xde920307,
+    0xc9e91744, 0xf0642b81, 0xe71f3fc2, 0x837e520b, 0x94054648,
+    0xad887a8d, 0xbaf36ece, 0x654aa11f, 0x7231b55c, 0x4bbc8999,
+    0x5cc79dda, 0x38a6f013, 0x2fdde450, 0x1650d895, 0x012bccd6,
+    0x72524176, 0x65295535, 0x5ca469f0, 0x4bdf7db3, 0x2fbe107a,
+    0x38c50439, 0x014838fc, 0x16332cbf, 0xc98ae36e, 0xdef1f72d,
+    0xe77ccbe8, 0xf007dfab, 0x9466b262, 0x831da621, 0xba909ae4,
+    0xadeb8ea7, 0x5c6381a4, 0x4b1895e7, 0x7295a922, 0x65eebd61,
+    0x018fd0a8, 0x16f4c4eb, 0x2f79f82e, 0x3802ec6d, 0xe7bb23bc,
+    0xf0c037ff, 0xc94d0b3a, 0xde361f79, 0xba5772b0, 0xad2c66f3,
+    0x94a15a36, 0x83da4e75, 0xf0a3c3d5, 0xe7d8d796, 0xde55eb53,
+    0xc92eff10, 0xad4f92d9, 0xba34869a, 0x83b9ba5f, 0x94c2ae1c,
+    0x4b7b61cd, 0x5c00758e, 0x658d494b, 0x72f65d08, 0x169730c1,
+    0x01ec2482, 0x38611847, 0x2f1a0c04, 0x6655004f, 0x712e140c,
+    0x48a328c9, 0x5fd83c8a, 0x3bb95143, 0x2cc24500, 0x154f79c5,
+    0x02346d86, 0xdd8da257, 0xcaf6b614, 0xf37b8ad1, 0xe4009e92,
+    0x8061f35b, 0x971ae718, 0xae97dbdd, 0xb9eccf9e, 0xca95423e,
+    0xddee567d, 0xe4636ab8, 0xf3187efb, 0x97791332, 0x80020771,
+    0xb98f3bb4, 0xaef42ff7, 0x714de026, 0x6636f465, 0x5fbbc8a0,
+    0x48c0dce3, 0x2ca1b12a, 0x3bdaa569, 0x025799ac, 0x152c8def,
+    0xe4a482ec, 0xf3df96af, 0xca52aa6a, 0xdd29be29, 0xb948d3e0,
+    0xae33c7a3, 0x97befb66, 0x80c5ef25, 0x5f7c20f4, 0x480734b7,
+    0x718a0872, 0x66f11c31, 0x029071f8, 0x15eb65bb, 0x2c66597e,
+    0x3b1d4d3d, 0x4864c09d, 0x5f1fd4de, 0x6692e81b, 0x71e9fc58,
+    0x15889191, 0x02f385d2, 0x3b7eb917, 0x2c05ad54, 0xf3bc6285,
+    0xe4c776c6, 0xdd4a4a03, 0xca315e40, 0xae503389, 0xb92b27ca,
+    0x80a61b0f, 0x97dd0f4c, 0xb8c70348, 0xafbc170b, 0x96312bce,
+    0x814a3f8d, 0xe52b5244, 0xf2504607, 0xcbdd7ac2, 0xdca66e81,
+    0x031fa150, 0x1464b513, 0x2de989d6, 0x3a929d95, 0x5ef3f05c,
+    0x4988e41f, 0x7005d8da, 0x677ecc99, 0x14074139, 0x037c557a,
+    0x3af169bf, 0x2d8a7dfc, 0x49eb1035, 0x5e900476, 0x671d38b3,
+    0x70662cf0, 0xafdfe321, 0xb8a4f762, 0x8129cba7, 0x9652dfe4,
+    0xf233b22d, 0xe548a66e, 0xdcc59aab, 0xcbbe8ee8, 0x3a3681eb,
+    0x2d4d95a8, 0x14c0a96d, 0x03bbbd2e, 0x67dad0e7, 0x70a1c4a4,
+    0x492cf861, 0x5e57ec22, 0x81ee23f3, 0x969537b0, 0xaf180b75,
+    0xb8631f36, 0xdc0272ff, 0xcb7966bc, 0xf2f45a79, 0xe58f4e3a,
+    0x96f6c39a, 0x818dd7d9, 0xb800eb1c, 0xaf7bff5f, 0xcb1a9296,
+    0xdc6186d5, 0xe5ecba10, 0xf297ae53, 0x2d2e6182, 0x3a5575c1,
+    0x03d84904, 0x14a35d47, 0x70c2308e, 0x67b924cd, 0x5e341808,
+    0x494f0c4b}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x00000000, 0x43147b17, 0x8628f62e, 0xc53c8d39, 0x0c51ec5d,
+    0x4f45974a, 0x8a791a73, 0xc96d6164, 0x18a2d8bb, 0x5bb6a3ac,
+    0x9e8a2e95, 0xdd9e5582, 0x14f334e6, 0x57e74ff1, 0x92dbc2c8,
+    0xd1cfb9df, 0x7142c0ac, 0x3256bbbb, 0xf76a3682, 0xb47e4d95,
+    0x7d132cf1, 0x3e0757e6, 0xfb3bdadf, 0xb82fa1c8, 0x69e01817,
+    0x2af46300, 0xefc8ee39, 0xacdc952e, 0x65b1f44a, 0x26a58f5d,
+    0xe3990264, 0xa08d7973, 0xa382f182, 0xe0968a95, 0x25aa07ac,
+    0x66be7cbb, 0xafd31ddf, 0xecc766c8, 0x29fbebf1, 0x6aef90e6,
+    0xbb202939, 0xf834522e, 0x3d08df17, 0x7e1ca400, 0xb771c564,
+    0xf465be73, 0x3159334a, 0x724d485d, 0xd2c0312e, 0x91d44a39,
+    0x54e8c700, 0x17fcbc17, 0xde91dd73, 0x9d85a664, 0x58b92b5d,
+    0x1bad504a, 0xca62e995, 0x89769282, 0x4c4a1fbb, 0x0f5e64ac,
+    0xc63305c8, 0x85277edf, 0x401bf3e6, 0x030f88f1, 0x070392de,
+    0x4417e9c9, 0x812b64f0, 0xc23f1fe7, 0x0b527e83, 0x48460594,
+    0x8d7a88ad, 0xce6ef3ba, 0x1fa14a65, 0x5cb53172, 0x9989bc4b,
+    0xda9dc75c, 0x13f0a638, 0x50e4dd2f, 0x95d85016, 0xd6cc2b01,
+    0x76415272, 0x35552965, 0xf069a45c, 0xb37ddf4b, 0x7a10be2f,
+    0x3904c538, 0xfc384801, 0xbf2c3316, 0x6ee38ac9, 0x2df7f1de,
+    0xe8cb7ce7, 0xabdf07f0, 0x62b26694, 0x21a61d83, 0xe49a90ba,
+    0xa78eebad, 0xa481635c, 0xe795184b, 0x22a99572, 0x61bdee65,
+    0xa8d08f01, 0xebc4f416, 0x2ef8792f, 0x6dec0238, 0xbc23bbe7,
+    0xff37c0f0, 0x3a0b4dc9, 0x791f36de, 0xb07257ba, 0xf3662cad,
+    0x365aa194, 0x754eda83, 0xd5c3a3f0, 0x96d7d8e7, 0x53eb55de,
+    0x10ff2ec9, 0xd9924fad, 0x9a8634ba, 0x5fbab983, 0x1caec294,
+    0xcd617b4b, 0x8e75005c, 0x4b498d65, 0x085df672, 0xc1309716,
+    0x8224ec01, 0x47186138, 0x040c1a2f, 0x4f005566, 0x0c142e71,
+    0xc928a348, 0x8a3cd85f, 0x4351b93b, 0x0045c22c, 0xc5794f15,
+    0x866d3402, 0x57a28ddd, 0x14b6f6ca, 0xd18a7bf3, 0x929e00e4,
+    0x5bf36180, 0x18e71a97, 0xdddb97ae, 0x9ecfecb9, 0x3e4295ca,
+    0x7d56eedd, 0xb86a63e4, 0xfb7e18f3, 0x32137997, 0x71070280,
+    0xb43b8fb9, 0xf72ff4ae, 0x26e04d71, 0x65f43666, 0xa0c8bb5f,
+    0xe3dcc048, 0x2ab1a12c, 0x69a5da3b, 0xac995702, 0xef8d2c15,
+    0xec82a4e4, 0xaf96dff3, 0x6aaa52ca, 0x29be29dd, 0xe0d348b9,
+    0xa3c733ae, 0x66fbbe97, 0x25efc580, 0xf4207c5f, 0xb7340748,
+    0x72088a71, 0x311cf166, 0xf8719002, 0xbb65eb15, 0x7e59662c,
+    0x3d4d1d3b, 0x9dc06448, 0xded41f5f, 0x1be89266, 0x58fce971,
+    0x91918815, 0xd285f302, 0x17b97e3b, 0x54ad052c, 0x8562bcf3,
+    0xc676c7e4, 0x034a4add, 0x405e31ca, 0x893350ae, 0xca272bb9,
+    0x0f1ba680, 0x4c0fdd97, 0x4803c7b8, 0x0b17bcaf, 0xce2b3196,
+    0x8d3f4a81, 0x44522be5, 0x074650f2, 0xc27addcb, 0x816ea6dc,
+    0x50a11f03, 0x13b56414, 0xd689e92d, 0x959d923a, 0x5cf0f35e,
+    0x1fe48849, 0xdad80570, 0x99cc7e67, 0x39410714, 0x7a557c03,
+    0xbf69f13a, 0xfc7d8a2d, 0x3510eb49, 0x7604905e, 0xb3381d67,
+    0xf02c6670, 0x21e3dfaf, 0x62f7a4b8, 0xa7cb2981, 0xe4df5296,
+    0x2db233f2, 0x6ea648e5, 0xab9ac5dc, 0xe88ebecb, 0xeb81363a,
+    0xa8954d2d, 0x6da9c014, 0x2ebdbb03, 0xe7d0da67, 0xa4c4a170,
+    0x61f82c49, 0x22ec575e, 0xf323ee81, 0xb0379596, 0x750b18af,
+    0x361f63b8, 0xff7202dc, 0xbc6679cb, 0x795af4f2, 0x3a4e8fe5,
+    0x9ac3f696, 0xd9d78d81, 0x1ceb00b8, 0x5fff7baf, 0x96921acb,
+    0xd58661dc, 0x10baece5, 0x53ae97f2, 0x82612e2d, 0xc175553a,
+    0x0449d803, 0x475da314, 0x8e30c270, 0xcd24b967, 0x0818345e,
+    0x4b0c4f49},
+   {0x00000000, 0x3e6bc2ef, 0x3dd0f504, 0x03bb37eb, 0x7aa0eb09,
+    0x44cb29e6, 0x47701e0d, 0x791bdce2, 0xf440d713, 0xca2b15fc,
+    0xc9902217, 0xf7fbe0f8, 0x8ee03c1a, 0xb08bfef5, 0xb330c91e,
+    0x8d5b0bf1, 0xe881ae27, 0xd6ea6cc8, 0xd5515b23, 0xeb3a99cc,
+    0x9221452e, 0xac4a87c1, 0xaff1b02a, 0x919a72c5, 0x1cc17934,
+    0x22aabbdb, 0x21118c30, 0x1f7a4edf, 0x6661923d, 0x580a50d2,
+    0x5bb16739, 0x65daa5d6, 0xd0035d4f, 0xee689fa0, 0xedd3a84b,
+    0xd3b86aa4, 0xaaa3b646, 0x94c874a9, 0x97734342, 0xa91881ad,
+    0x24438a5c, 0x1a2848b3, 0x19937f58, 0x27f8bdb7, 0x5ee36155,
+    0x6088a3ba, 0x63339451, 0x5d5856be, 0x3882f368, 0x06e93187,
+    0x0552066c, 0x3b39c483, 0x42221861, 0x7c49da8e, 0x7ff2ed65,
+    0x41992f8a, 0xccc2247b, 0xf2a9e694, 0xf112d17f, 0xcf791390,
+    0xb662cf72, 0x88090d9d, 0x8bb23a76, 0xb5d9f899, 0xa007ba9e,
+    0x9e6c7871, 0x9dd74f9a, 0xa3bc8d75, 0xdaa75197, 0xe4cc9378,
+    0xe777a493, 0xd91c667c, 0x54476d8d, 0x6a2caf62, 0x69979889,
+    0x57fc5a66, 0x2ee78684, 0x108c446b, 0x13377380, 0x2d5cb16f,
+    0x488614b9, 0x76edd656, 0x7556e1bd, 0x4b3d2352, 0x3226ffb0,
+    0x0c4d3d5f, 0x0ff60ab4, 0x319dc85b, 0xbcc6c3aa, 0x82ad0145,
+    0x811636ae, 0xbf7df441, 0xc66628a3, 0xf80dea4c, 0xfbb6dda7,
+    0xc5dd1f48, 0x7004e7d1, 0x4e6f253e, 0x4dd412d5, 0x73bfd03a,
+    0x0aa40cd8, 0x34cfce37, 0x3774f9dc, 0x091f3b33, 0x844430c2,
+    0xba2ff22d, 0xb994c5c6, 0x87ff0729, 0xfee4dbcb, 0xc08f1924,
+    0xc3342ecf, 0xfd5fec20, 0x988549f6, 0xa6ee8b19, 0xa555bcf2,
+    0x9b3e7e1d, 0xe225a2ff, 0xdc4e6010, 0xdff557fb, 0xe19e9514,
+    0x6cc59ee5, 0x52ae5c0a, 0x51156be1, 0x6f7ea90e, 0x166575ec,
+    0x280eb703, 0x2bb580e8, 0x15de4207, 0x010905e6, 0x3f62c709,
+    0x3cd9f0e2, 0x02b2320d, 0x7ba9eeef, 0x45c22c00, 0x46791beb,
+    0x7812d904, 0xf549d2f5, 0xcb22101a, 0xc89927f1, 0xf6f2e51e,
+    0x8fe939fc, 0xb182fb13, 0xb239ccf8, 0x8c520e17, 0xe988abc1,
+    0xd7e3692e, 0xd4585ec5, 0xea339c2a, 0x932840c8, 0xad438227,
+    0xaef8b5cc, 0x90937723, 0x1dc87cd2, 0x23a3be3d, 0x201889d6,
+    0x1e734b39, 0x676897db, 0x59035534, 0x5ab862df, 0x64d3a030,
+    0xd10a58a9, 0xef619a46, 0xecdaadad, 0xd2b16f42, 0xabaab3a0,
+    0x95c1714f, 0x967a46a4, 0xa811844b, 0x254a8fba, 0x1b214d55,
+    0x189a7abe, 0x26f1b851, 0x5fea64b3, 0x6181a65c, 0x623a91b7,
+    0x5c515358, 0x398bf68e, 0x07e03461, 0x045b038a, 0x3a30c165,
+    0x432b1d87, 0x7d40df68, 0x7efbe883, 0x40902a6c, 0xcdcb219d,
+    0xf3a0e372, 0xf01bd499, 0xce701676, 0xb76bca94, 0x8900087b,
+    0x8abb3f90, 0xb4d0fd7f, 0xa10ebf78, 0x9f657d97, 0x9cde4a7c,
+    0xa2b58893, 0xdbae5471, 0xe5c5969e, 0xe67ea175, 0xd815639a,
+    0x554e686b, 0x6b25aa84, 0x689e9d6f, 0x56f55f80, 0x2fee8362,
+    0x1185418d, 0x123e7666, 0x2c55b489, 0x498f115f, 0x77e4d3b0,
+    0x745fe45b, 0x4a3426b4, 0x332ffa56, 0x0d4438b9, 0x0eff0f52,
+    0x3094cdbd, 0xbdcfc64c, 0x83a404a3, 0x801f3348, 0xbe74f1a7,
+    0xc76f2d45, 0xf904efaa, 0xfabfd841, 0xc4d41aae, 0x710de237,
+    0x4f6620d8, 0x4cdd1733, 0x72b6d5dc, 0x0bad093e, 0x35c6cbd1,
+    0x367dfc3a, 0x08163ed5, 0x854d3524, 0xbb26f7cb, 0xb89dc020,
+    0x86f602cf, 0xffedde2d, 0xc1861cc2, 0xc23d2b29, 0xfc56e9c6,
+    0x998c4c10, 0xa7e78eff, 0xa45cb914, 0x9a377bfb, 0xe32ca719,
+    0xdd4765f6, 0xdefc521d, 0xe09790f2, 0x6dcc9b03, 0x53a759ec,
+    0x501c6e07, 0x6e77ace8, 0x176c700a, 0x2907b2e5, 0x2abc850e,
+    0x14d747e1},
+   {0x00000000, 0xc0df8ec1, 0xc1b96c58, 0x0166e299, 0x8273d9b0,
+    0x42ac5771, 0x43cab5e8, 0x83153b29, 0x45e1c3ba, 0x853e4d7b,
+    0x8458afe2, 0x44872123, 0xc7921a0a, 0x074d94cb, 0x062b7652,
+    0xc6f4f893, 0xcbc4f6ae, 0x0b1b786f, 0x0a7d9af6, 0xcaa21437,
+    0x49b72f1e, 0x8968a1df, 0x880e4346, 0x48d1cd87, 0x8e253514,
+    0x4efabbd5, 0x4f9c594c, 0x8f43d78d, 0x0c56eca4, 0xcc896265,
+    0xcdef80fc, 0x0d300e3d, 0xd78f9c86, 0x17501247, 0x1636f0de,
+    0xd6e97e1f, 0x55fc4536, 0x9523cbf7, 0x9445296e, 0x549aa7af,
+    0x926e5f3c, 0x52b1d1fd, 0x53d73364, 0x9308bda5, 0x101d868c,
+    0xd0c2084d, 0xd1a4ead4, 0x117b6415, 0x1c4b6a28, 0xdc94e4e9,
+    0xddf20670, 0x1d2d88b1, 0x9e38b398, 0x5ee73d59, 0x5f81dfc0,
+    0x9f5e5101, 0x59aaa992, 0x99752753, 0x9813c5ca, 0x58cc4b0b,
+    0xdbd97022, 0x1b06fee3, 0x1a601c7a, 0xdabf92bb, 0xef1948d6,
+    0x2fc6c617, 0x2ea0248e, 0xee7faa4f, 0x6d6a9166, 0xadb51fa7,
+    0xacd3fd3e, 0x6c0c73ff, 0xaaf88b6c, 0x6a2705ad, 0x6b41e734,
+    0xab9e69f5, 0x288b52dc, 0xe854dc1d, 0xe9323e84, 0x29edb045,
+    0x24ddbe78, 0xe40230b9, 0xe564d220, 0x25bb5ce1, 0xa6ae67c8,
+    0x6671e909, 0x67170b90, 0xa7c88551, 0x613c7dc2, 0xa1e3f303,
+    0xa085119a, 0x605a9f5b, 0xe34fa472, 0x23902ab3, 0x22f6c82a,
+    0xe22946eb, 0x3896d450, 0xf8495a91, 0xf92fb808, 0x39f036c9,
+    0xbae50de0, 0x7a3a8321, 0x7b5c61b8, 0xbb83ef79, 0x7d7717ea,
+    0xbda8992b, 0xbcce7bb2, 0x7c11f573, 0xff04ce5a, 0x3fdb409b,
+    0x3ebda202, 0xfe622cc3, 0xf35222fe, 0x338dac3f, 0x32eb4ea6,
+    0xf234c067, 0x7121fb4e, 0xb1fe758f, 0xb0989716, 0x704719d7,
+    0xb6b3e144, 0x766c6f85, 0x770a8d1c, 0xb7d503dd, 0x34c038f4,
+    0xf41fb635, 0xf57954ac, 0x35a6da6d, 0x9f35e177, 0x5fea6fb6,
+    0x5e8c8d2f, 0x9e5303ee, 0x1d4638c7, 0xdd99b606, 0xdcff549f,
+    0x1c20da5e, 0xdad422cd, 0x1a0bac0c, 0x1b6d4e95, 0xdbb2c054,
+    0x58a7fb7d, 0x987875bc, 0x991e9725, 0x59c119e4, 0x54f117d9,
+    0x942e9918, 0x95487b81, 0x5597f540, 0xd682ce69, 0x165d40a8,
+    0x173ba231, 0xd7e42cf0, 0x1110d463, 0xd1cf5aa2, 0xd0a9b83b,
+    0x107636fa, 0x93630dd3, 0x53bc8312, 0x52da618b, 0x9205ef4a,
+    0x48ba7df1, 0x8865f330, 0x890311a9, 0x49dc9f68, 0xcac9a441,
+    0x0a162a80, 0x0b70c819, 0xcbaf46d8, 0x0d5bbe4b, 0xcd84308a,
+    0xcce2d213, 0x0c3d5cd2, 0x8f2867fb, 0x4ff7e93a, 0x4e910ba3,
+    0x8e4e8562, 0x837e8b5f, 0x43a1059e, 0x42c7e707, 0x821869c6,
+    0x010d52ef, 0xc1d2dc2e, 0xc0b43eb7, 0x006bb076, 0xc69f48e5,
+    0x0640c624, 0x072624bd, 0xc7f9aa7c, 0x44ec9155, 0x84331f94,
+    0x8555fd0d, 0x458a73cc, 0x702ca9a1, 0xb0f32760, 0xb195c5f9,
+    0x714a4b38, 0xf25f7011, 0x3280fed0, 0x33e61c49, 0xf3399288,
+    0x35cd6a1b, 0xf512e4da, 0xf4740643, 0x34ab8882, 0xb7beb3ab,
+    0x77613d6a, 0x7607dff3, 0xb6d85132, 0xbbe85f0f, 0x7b37d1ce,
+    0x7a513357, 0xba8ebd96, 0x399b86bf, 0xf944087e, 0xf822eae7,
+    0x38fd6426, 0xfe099cb5, 0x3ed61274, 0x3fb0f0ed, 0xff6f7e2c,
+    0x7c7a4505, 0xbca5cbc4, 0xbdc3295d, 0x7d1ca79c, 0xa7a33527,
+    0x677cbbe6, 0x661a597f, 0xa6c5d7be, 0x25d0ec97, 0xe50f6256,
+    0xe46980cf, 0x24b60e0e, 0xe242f69d, 0x229d785c, 0x23fb9ac5,
+    0xe3241404, 0x60312f2d, 0xa0eea1ec, 0xa1884375, 0x6157cdb4,
+    0x6c67c389, 0xacb84d48, 0xaddeafd1, 0x6d012110, 0xee141a39,
+    0x2ecb94f8, 0x2fad7661, 0xef72f8a0, 0x29860033, 0xe9598ef2,
+    0xe83f6c6b, 0x28e0e2aa, 0xabf5d983, 0x6b2a5742, 0x6a4cb5db,
+    0xaa933b1a},
+   {0x00000000, 0x6f4ca59b, 0x9f9e3bec, 0xf0d29e77, 0x7f3b0603,
+    0x1077a398, 0xe0a53def, 0x8fe99874, 0xfe760c06, 0x913aa99d,
+    0x61e837ea, 0x0ea49271, 0x814d0a05, 0xee01af9e, 0x1ed331e9,
+    0x719f9472, 0xfced180c, 0x93a1bd97, 0x637323e0, 0x0c3f867b,
+    0x83d61e0f, 0xec9abb94, 0x1c4825e3, 0x73048078, 0x029b140a,
+    0x6dd7b191, 0x9d052fe6, 0xf2498a7d, 0x7da01209, 0x12ecb792,
+    0xe23e29e5, 0x8d728c7e, 0xf8db3118, 0x97979483, 0x67450af4,
+    0x0809af6f, 0x87e0371b, 0xe8ac9280, 0x187e0cf7, 0x7732a96c,
+    0x06ad3d1e, 0x69e19885, 0x993306f2, 0xf67fa369, 0x79963b1d,
+    0x16da9e86, 0xe60800f1, 0x8944a56a, 0x04362914, 0x6b7a8c8f,
+    0x9ba812f8, 0xf4e4b763, 0x7b0d2f17, 0x14418a8c, 0xe49314fb,
+    0x8bdfb160, 0xfa402512, 0x950c8089, 0x65de1efe, 0x0a92bb65,
+    0x857b2311, 0xea37868a, 0x1ae518fd, 0x75a9bd66, 0xf0b76330,
+    0x9ffbc6ab, 0x6f2958dc, 0x0065fd47, 0x8f8c6533, 0xe0c0c0a8,
+    0x10125edf, 0x7f5efb44, 0x0ec16f36, 0x618dcaad, 0x915f54da,
+    0xfe13f141, 0x71fa6935, 0x1eb6ccae, 0xee6452d9, 0x8128f742,
+    0x0c5a7b3c, 0x6316dea7, 0x93c440d0, 0xfc88e54b, 0x73617d3f,
+    0x1c2dd8a4, 0xecff46d3, 0x83b3e348, 0xf22c773a, 0x9d60d2a1,
+    0x6db24cd6, 0x02fee94d, 0x8d177139, 0xe25bd4a2, 0x12894ad5,
+    0x7dc5ef4e, 0x086c5228, 0x6720f7b3, 0x97f269c4, 0xf8becc5f,
+    0x7757542b, 0x181bf1b0, 0xe8c96fc7, 0x8785ca5c, 0xf61a5e2e,
+    0x9956fbb5, 0x698465c2, 0x06c8c059, 0x8921582d, 0xe66dfdb6,
+    0x16bf63c1, 0x79f3c65a, 0xf4814a24, 0x9bcdefbf, 0x6b1f71c8,
+    0x0453d453, 0x8bba4c27, 0xe4f6e9bc, 0x142477cb, 0x7b68d250,
+    0x0af74622, 0x65bbe3b9, 0x95697dce, 0xfa25d855, 0x75cc4021,
+    0x1a80e5ba, 0xea527bcd, 0x851ede56, 0xe06fc760, 0x8f2362fb,
+    0x7ff1fc8c, 0x10bd5917, 0x9f54c163, 0xf01864f8, 0x00cafa8f,
+    0x6f865f14, 0x1e19cb66, 0x71556efd, 0x8187f08a, 0xeecb5511,
+    0x6122cd65, 0x0e6e68fe, 0xfebcf689, 0x91f05312, 0x1c82df6c,
+    0x73ce7af7, 0x831ce480, 0xec50411b, 0x63b9d96f, 0x0cf57cf4,
+    0xfc27e283, 0x936b4718, 0xe2f4d36a, 0x8db876f1, 0x7d6ae886,
+    0x12264d1d, 0x9dcfd569, 0xf28370f2, 0x0251ee85, 0x6d1d4b1e,
+    0x18b4f678, 0x77f853e3, 0x872acd94, 0xe866680f, 0x678ff07b,
+    0x08c355e0, 0xf811cb97, 0x975d6e0c, 0xe6c2fa7e, 0x898e5fe5,
+    0x795cc192, 0x16106409, 0x99f9fc7d, 0xf6b559e6, 0x0667c791,
+    0x692b620a, 0xe459ee74, 0x8b154bef, 0x7bc7d598, 0x148b7003,
+    0x9b62e877, 0xf42e4dec, 0x04fcd39b, 0x6bb07600, 0x1a2fe272,
+    0x756347e9, 0x85b1d99e, 0xeafd7c05, 0x6514e471, 0x0a5841ea,
+    0xfa8adf9d, 0x95c67a06, 0x10d8a450, 0x7f9401cb, 0x8f469fbc,
+    0xe00a3a27, 0x6fe3a253, 0x00af07c8, 0xf07d99bf, 0x9f313c24,
+    0xeeaea856, 0x81e20dcd, 0x713093ba, 0x1e7c3621, 0x9195ae55,
+    0xfed90bce, 0x0e0b95b9, 0x61473022, 0xec35bc5c, 0x837919c7,
+    0x73ab87b0, 0x1ce7222b, 0x930eba5f, 0xfc421fc4, 0x0c9081b3,
+    0x63dc2428, 0x1243b05a, 0x7d0f15c1, 0x8ddd8bb6, 0xe2912e2d,
+    0x6d78b659, 0x023413c2, 0xf2e68db5, 0x9daa282e, 0xe8039548,
+    0x874f30d3, 0x779daea4, 0x18d10b3f, 0x9738934b, 0xf87436d0,
+    0x08a6a8a7, 0x67ea0d3c, 0x1675994e, 0x79393cd5, 0x89eba2a2,
+    0xe6a70739, 0x694e9f4d, 0x06023ad6, 0xf6d0a4a1, 0x999c013a,
+    0x14ee8d44, 0x7ba228df, 0x8b70b6a8, 0xe43c1333, 0x6bd58b47,
+    0x04992edc, 0xf44bb0ab, 0x9b071530, 0xea988142, 0x85d424d9,
+    0x7506baae, 0x1a4a1f35, 0x95a38741, 0xfaef22da, 0x0a3dbcad,
+    0x65711936}};
+
+#endif
+
+#endif
+
+#if N == 4
+
+#if W == 8
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xf1da05aa, 0x38c50d15, 0xc91f08bf, 0x718a1a2a,
+    0x80501f80, 0x494f173f, 0xb8951295, 0xe3143454, 0x12ce31fe,
+    0xdbd13941, 0x2a0b3ceb, 0x929e2e7e, 0x63442bd4, 0xaa5b236b,
+    0x5b8126c1, 0x1d596ee9, 0xec836b43, 0x259c63fc, 0xd4466656,
+    0x6cd374c3, 0x9d097169, 0x541679d6, 0xa5cc7c7c, 0xfe4d5abd,
+    0x0f975f17, 0xc68857a8, 0x37525202, 0x8fc74097, 0x7e1d453d,
+    0xb7024d82, 0x46d84828, 0x3ab2ddd2, 0xcb68d878, 0x0277d0c7,
+    0xf3add56d, 0x4b38c7f8, 0xbae2c252, 0x73fdcaed, 0x8227cf47,
+    0xd9a6e986, 0x287cec2c, 0xe163e493, 0x10b9e139, 0xa82cf3ac,
+    0x59f6f606, 0x90e9feb9, 0x6133fb13, 0x27ebb33b, 0xd631b691,
+    0x1f2ebe2e, 0xeef4bb84, 0x5661a911, 0xa7bbacbb, 0x6ea4a404,
+    0x9f7ea1ae, 0xc4ff876f, 0x352582c5, 0xfc3a8a7a, 0x0de08fd0,
+    0xb5759d45, 0x44af98ef, 0x8db09050, 0x7c6a95fa, 0x7565bba4,
+    0x84bfbe0e, 0x4da0b6b1, 0xbc7ab31b, 0x04efa18e, 0xf535a424,
+    0x3c2aac9b, 0xcdf0a931, 0x96718ff0, 0x67ab8a5a, 0xaeb482e5,
+    0x5f6e874f, 0xe7fb95da, 0x16219070, 0xdf3e98cf, 0x2ee49d65,
+    0x683cd54d, 0x99e6d0e7, 0x50f9d858, 0xa123ddf2, 0x19b6cf67,
+    0xe86ccacd, 0x2173c272, 0xd0a9c7d8, 0x8b28e119, 0x7af2e4b3,
+    0xb3edec0c, 0x4237e9a6, 0xfaa2fb33, 0x0b78fe99, 0xc267f626,
+    0x33bdf38c, 0x4fd76676, 0xbe0d63dc, 0x77126b63, 0x86c86ec9,
+    0x3e5d7c5c, 0xcf8779f6, 0x06987149, 0xf74274e3, 0xacc35222,
+    0x5d195788, 0x94065f37, 0x65dc5a9d, 0xdd494808, 0x2c934da2,
+    0xe58c451d, 0x145640b7, 0x528e089f, 0xa3540d35, 0x6a4b058a,
+    0x9b910020, 0x230412b5, 0xd2de171f, 0x1bc11fa0, 0xea1b1a0a,
+    0xb19a3ccb, 0x40403961, 0x895f31de, 0x78853474, 0xc01026e1,
+    0x31ca234b, 0xf8d52bf4, 0x090f2e5e, 0xeacb7748, 0x1b1172e2,
+    0xd20e7a5d, 0x23d47ff7, 0x9b416d62, 0x6a9b68c8, 0xa3846077,
+    0x525e65dd, 0x09df431c, 0xf80546b6, 0x311a4e09, 0xc0c04ba3,
+    0x78555936, 0x898f5c9c, 0x40905423, 0xb14a5189, 0xf79219a1,
+    0x06481c0b, 0xcf5714b4, 0x3e8d111e, 0x8618038b, 0x77c20621,
+    0xbedd0e9e, 0x4f070b34, 0x14862df5, 0xe55c285f, 0x2c4320e0,
+    0xdd99254a, 0x650c37df, 0x94d63275, 0x5dc93aca, 0xac133f60,
+    0xd079aa9a, 0x21a3af30, 0xe8bca78f, 0x1966a225, 0xa1f3b0b0,
+    0x5029b51a, 0x9936bda5, 0x68ecb80f, 0x336d9ece, 0xc2b79b64,
+    0x0ba893db, 0xfa729671, 0x42e784e4, 0xb33d814e, 0x7a2289f1,
+    0x8bf88c5b, 0xcd20c473, 0x3cfac1d9, 0xf5e5c966, 0x043fcccc,
+    0xbcaade59, 0x4d70dbf3, 0x846fd34c, 0x75b5d6e6, 0x2e34f027,
+    0xdfeef58d, 0x16f1fd32, 0xe72bf898, 0x5fbeea0d, 0xae64efa7,
+    0x677be718, 0x96a1e2b2, 0x9faeccec, 0x6e74c946, 0xa76bc1f9,
+    0x56b1c453, 0xee24d6c6, 0x1ffed36c, 0xd6e1dbd3, 0x273bde79,
+    0x7cbaf8b8, 0x8d60fd12, 0x447ff5ad, 0xb5a5f007, 0x0d30e292,
+    0xfceae738, 0x35f5ef87, 0xc42fea2d, 0x82f7a205, 0x732da7af,
+    0xba32af10, 0x4be8aaba, 0xf37db82f, 0x02a7bd85, 0xcbb8b53a,
+    0x3a62b090, 0x61e39651, 0x903993fb, 0x59269b44, 0xa8fc9eee,
+    0x10698c7b, 0xe1b389d1, 0x28ac816e, 0xd97684c4, 0xa51c113e,
+    0x54c61494, 0x9dd91c2b, 0x6c031981, 0xd4960b14, 0x254c0ebe,
+    0xec530601, 0x1d8903ab, 0x4608256a, 0xb7d220c0, 0x7ecd287f,
+    0x8f172dd5, 0x37823f40, 0xc6583aea, 0x0f473255, 0xfe9d37ff,
+    0xb8457fd7, 0x499f7a7d, 0x808072c2, 0x715a7768, 0xc9cf65fd,
+    0x38156057, 0xf10a68e8, 0x00d06d42, 0x5b514b83, 0xaa8b4e29,
+    0x63944696, 0x924e433c, 0x2adb51a9, 0xdb015403, 0x121e5cbc,
+    0xe3c45916},
+   {0x00000000, 0x0ee7e8d1, 0x1dcfd1a2, 0x13283973, 0x3b9fa344,
+    0x35784b95, 0x265072e6, 0x28b79a37, 0x773f4688, 0x79d8ae59,
+    0x6af0972a, 0x64177ffb, 0x4ca0e5cc, 0x42470d1d, 0x516f346e,
+    0x5f88dcbf, 0xee7e8d10, 0xe09965c1, 0xf3b15cb2, 0xfd56b463,
+    0xd5e12e54, 0xdb06c685, 0xc82efff6, 0xc6c91727, 0x9941cb98,
+    0x97a62349, 0x848e1a3a, 0x8a69f2eb, 0xa2de68dc, 0xac39800d,
+    0xbf11b97e, 0xb1f651af, 0x078c1c61, 0x096bf4b0, 0x1a43cdc3,
+    0x14a42512, 0x3c13bf25, 0x32f457f4, 0x21dc6e87, 0x2f3b8656,
+    0x70b35ae9, 0x7e54b238, 0x6d7c8b4b, 0x639b639a, 0x4b2cf9ad,
+    0x45cb117c, 0x56e3280f, 0x5804c0de, 0xe9f29171, 0xe71579a0,
+    0xf43d40d3, 0xfadaa802, 0xd26d3235, 0xdc8adae4, 0xcfa2e397,
+    0xc1450b46, 0x9ecdd7f9, 0x902a3f28, 0x8302065b, 0x8de5ee8a,
+    0xa55274bd, 0xabb59c6c, 0xb89da51f, 0xb67a4dce, 0x0f1838c2,
+    0x01ffd013, 0x12d7e960, 0x1c3001b1, 0x34879b86, 0x3a607357,
+    0x29484a24, 0x27afa2f5, 0x78277e4a, 0x76c0969b, 0x65e8afe8,
+    0x6b0f4739, 0x43b8dd0e, 0x4d5f35df, 0x5e770cac, 0x5090e47d,
+    0xe166b5d2, 0xef815d03, 0xfca96470, 0xf24e8ca1, 0xdaf91696,
+    0xd41efe47, 0xc736c734, 0xc9d12fe5, 0x9659f35a, 0x98be1b8b,
+    0x8b9622f8, 0x8571ca29, 0xadc6501e, 0xa321b8cf, 0xb00981bc,
+    0xbeee696d, 0x089424a3, 0x0673cc72, 0x155bf501, 0x1bbc1dd0,
+    0x330b87e7, 0x3dec6f36, 0x2ec45645, 0x2023be94, 0x7fab622b,
+    0x714c8afa, 0x6264b389, 0x6c835b58, 0x4434c16f, 0x4ad329be,
+    0x59fb10cd, 0x571cf81c, 0xe6eaa9b3, 0xe80d4162, 0xfb257811,
+    0xf5c290c0, 0xdd750af7, 0xd392e226, 0xc0badb55, 0xce5d3384,
+    0x91d5ef3b, 0x9f3207ea, 0x8c1a3e99, 0x82fdd648, 0xaa4a4c7f,
+    0xa4ada4ae, 0xb7859ddd, 0xb962750c, 0x1e307184, 0x10d79955,
+    0x03ffa026, 0x0d1848f7, 0x25afd2c0, 0x2b483a11, 0x38600362,
+    0x3687ebb3, 0x690f370c, 0x67e8dfdd, 0x74c0e6ae, 0x7a270e7f,
+    0x52909448, 0x5c777c99, 0x4f5f45ea, 0x41b8ad3b, 0xf04efc94,
+    0xfea91445, 0xed812d36, 0xe366c5e7, 0xcbd15fd0, 0xc536b701,
+    0xd61e8e72, 0xd8f966a3, 0x8771ba1c, 0x899652cd, 0x9abe6bbe,
+    0x9459836f, 0xbcee1958, 0xb209f189, 0xa121c8fa, 0xafc6202b,
+    0x19bc6de5, 0x175b8534, 0x0473bc47, 0x0a945496, 0x2223cea1,
+    0x2cc42670, 0x3fec1f03, 0x310bf7d2, 0x6e832b6d, 0x6064c3bc,
+    0x734cfacf, 0x7dab121e, 0x551c8829, 0x5bfb60f8, 0x48d3598b,
+    0x4634b15a, 0xf7c2e0f5, 0xf9250824, 0xea0d3157, 0xe4ead986,
+    0xcc5d43b1, 0xc2baab60, 0xd1929213, 0xdf757ac2, 0x80fda67d,
+    0x8e1a4eac, 0x9d3277df, 0x93d59f0e, 0xbb620539, 0xb585ede8,
+    0xa6add49b, 0xa84a3c4a, 0x11284946, 0x1fcfa197, 0x0ce798e4,
+    0x02007035, 0x2ab7ea02, 0x245002d3, 0x37783ba0, 0x399fd371,
+    0x66170fce, 0x68f0e71f, 0x7bd8de6c, 0x753f36bd, 0x5d88ac8a,
+    0x536f445b, 0x40477d28, 0x4ea095f9, 0xff56c456, 0xf1b12c87,
+    0xe29915f4, 0xec7efd25, 0xc4c96712, 0xca2e8fc3, 0xd906b6b0,
+    0xd7e15e61, 0x886982de, 0x868e6a0f, 0x95a6537c, 0x9b41bbad,
+    0xb3f6219a, 0xbd11c94b, 0xae39f038, 0xa0de18e9, 0x16a45527,
+    0x1843bdf6, 0x0b6b8485, 0x058c6c54, 0x2d3bf663, 0x23dc1eb2,
+    0x30f427c1, 0x3e13cf10, 0x619b13af, 0x6f7cfb7e, 0x7c54c20d,
+    0x72b32adc, 0x5a04b0eb, 0x54e3583a, 0x47cb6149, 0x492c8998,
+    0xf8dad837, 0xf63d30e6, 0xe5150995, 0xebf2e144, 0xc3457b73,
+    0xcda293a2, 0xde8aaad1, 0xd06d4200, 0x8fe59ebf, 0x8102766e,
+    0x922a4f1d, 0x9ccda7cc, 0xb47a3dfb, 0xba9dd52a, 0xa9b5ec59,
+    0xa7520488},
+   {0x00000000, 0x3c60e308, 0x78c1c610, 0x44a12518, 0xf1838c20,
+    0xcde36f28, 0x89424a30, 0xb522a938, 0x38761e01, 0x0416fd09,
+    0x40b7d811, 0x7cd73b19, 0xc9f59221, 0xf5957129, 0xb1345431,
+    0x8d54b739, 0x70ec3c02, 0x4c8cdf0a, 0x082dfa12, 0x344d191a,
+    0x816fb022, 0xbd0f532a, 0xf9ae7632, 0xc5ce953a, 0x489a2203,
+    0x74fac10b, 0x305be413, 0x0c3b071b, 0xb919ae23, 0x85794d2b,
+    0xc1d86833, 0xfdb88b3b, 0xe1d87804, 0xddb89b0c, 0x9919be14,
+    0xa5795d1c, 0x105bf424, 0x2c3b172c, 0x689a3234, 0x54fad13c,
+    0xd9ae6605, 0xe5ce850d, 0xa16fa015, 0x9d0f431d, 0x282dea25,
+    0x144d092d, 0x50ec2c35, 0x6c8ccf3d, 0x91344406, 0xad54a70e,
+    0xe9f58216, 0xd595611e, 0x60b7c826, 0x5cd72b2e, 0x18760e36,
+    0x2416ed3e, 0xa9425a07, 0x9522b90f, 0xd1839c17, 0xede37f1f,
+    0x58c1d627, 0x64a1352f, 0x20001037, 0x1c60f33f, 0x18c1f649,
+    0x24a11541, 0x60003059, 0x5c60d351, 0xe9427a69, 0xd5229961,
+    0x9183bc79, 0xade35f71, 0x20b7e848, 0x1cd70b40, 0x58762e58,
+    0x6416cd50, 0xd1346468, 0xed548760, 0xa9f5a278, 0x95954170,
+    0x682dca4b, 0x544d2943, 0x10ec0c5b, 0x2c8cef53, 0x99ae466b,
+    0xa5cea563, 0xe16f807b, 0xdd0f6373, 0x505bd44a, 0x6c3b3742,
+    0x289a125a, 0x14faf152, 0xa1d8586a, 0x9db8bb62, 0xd9199e7a,
+    0xe5797d72, 0xf9198e4d, 0xc5796d45, 0x81d8485d, 0xbdb8ab55,
+    0x089a026d, 0x34fae165, 0x705bc47d, 0x4c3b2775, 0xc16f904c,
+    0xfd0f7344, 0xb9ae565c, 0x85ceb554, 0x30ec1c6c, 0x0c8cff64,
+    0x482dda7c, 0x744d3974, 0x89f5b24f, 0xb5955147, 0xf134745f,
+    0xcd549757, 0x78763e6f, 0x4416dd67, 0x00b7f87f, 0x3cd71b77,
+    0xb183ac4e, 0x8de34f46, 0xc9426a5e, 0xf5228956, 0x4000206e,
+    0x7c60c366, 0x38c1e67e, 0x04a10576, 0x3183ec92, 0x0de30f9a,
+    0x49422a82, 0x7522c98a, 0xc00060b2, 0xfc6083ba, 0xb8c1a6a2,
+    0x84a145aa, 0x09f5f293, 0x3595119b, 0x71343483, 0x4d54d78b,
+    0xf8767eb3, 0xc4169dbb, 0x80b7b8a3, 0xbcd75bab, 0x416fd090,
+    0x7d0f3398, 0x39ae1680, 0x05cef588, 0xb0ec5cb0, 0x8c8cbfb8,
+    0xc82d9aa0, 0xf44d79a8, 0x7919ce91, 0x45792d99, 0x01d80881,
+    0x3db8eb89, 0x889a42b1, 0xb4faa1b9, 0xf05b84a1, 0xcc3b67a9,
+    0xd05b9496, 0xec3b779e, 0xa89a5286, 0x94fab18e, 0x21d818b6,
+    0x1db8fbbe, 0x5919dea6, 0x65793dae, 0xe82d8a97, 0xd44d699f,
+    0x90ec4c87, 0xac8caf8f, 0x19ae06b7, 0x25cee5bf, 0x616fc0a7,
+    0x5d0f23af, 0xa0b7a894, 0x9cd74b9c, 0xd8766e84, 0xe4168d8c,
+    0x513424b4, 0x6d54c7bc, 0x29f5e2a4, 0x159501ac, 0x98c1b695,
+    0xa4a1559d, 0xe0007085, 0xdc60938d, 0x69423ab5, 0x5522d9bd,
+    0x1183fca5, 0x2de31fad, 0x29421adb, 0x1522f9d3, 0x5183dccb,
+    0x6de33fc3, 0xd8c196fb, 0xe4a175f3, 0xa00050eb, 0x9c60b3e3,
+    0x113404da, 0x2d54e7d2, 0x69f5c2ca, 0x559521c2, 0xe0b788fa,
+    0xdcd76bf2, 0x98764eea, 0xa416ade2, 0x59ae26d9, 0x65cec5d1,
+    0x216fe0c9, 0x1d0f03c1, 0xa82daaf9, 0x944d49f1, 0xd0ec6ce9,
+    0xec8c8fe1, 0x61d838d8, 0x5db8dbd0, 0x1919fec8, 0x25791dc0,
+    0x905bb4f8, 0xac3b57f0, 0xe89a72e8, 0xd4fa91e0, 0xc89a62df,
+    0xf4fa81d7, 0xb05ba4cf, 0x8c3b47c7, 0x3919eeff, 0x05790df7,
+    0x41d828ef, 0x7db8cbe7, 0xf0ec7cde, 0xcc8c9fd6, 0x882dbace,
+    0xb44d59c6, 0x016ff0fe, 0x3d0f13f6, 0x79ae36ee, 0x45ced5e6,
+    0xb8765edd, 0x8416bdd5, 0xc0b798cd, 0xfcd77bc5, 0x49f5d2fd,
+    0x759531f5, 0x313414ed, 0x0d54f7e5, 0x800040dc, 0xbc60a3d4,
+    0xf8c186cc, 0xc4a165c4, 0x7183ccfc, 0x4de32ff4, 0x09420aec,
+    0x3522e9e4},
+   {0x00000000, 0x6307d924, 0xc60fb248, 0xa5086b6c, 0x576e62d1,
+    0x3469bbf5, 0x9161d099, 0xf26609bd, 0xaedcc5a2, 0xcddb1c86,
+    0x68d377ea, 0x0bd4aece, 0xf9b2a773, 0x9ab57e57, 0x3fbd153b,
+    0x5cbacc1f, 0x86c88d05, 0xe5cf5421, 0x40c73f4d, 0x23c0e669,
+    0xd1a6efd4, 0xb2a136f0, 0x17a95d9c, 0x74ae84b8, 0x281448a7,
+    0x4b139183, 0xee1bfaef, 0x8d1c23cb, 0x7f7a2a76, 0x1c7df352,
+    0xb975983e, 0xda72411a, 0xd6e01c4b, 0xb5e7c56f, 0x10efae03,
+    0x73e87727, 0x818e7e9a, 0xe289a7be, 0x4781ccd2, 0x248615f6,
+    0x783cd9e9, 0x1b3b00cd, 0xbe336ba1, 0xdd34b285, 0x2f52bb38,
+    0x4c55621c, 0xe95d0970, 0x8a5ad054, 0x5028914e, 0x332f486a,
+    0x96272306, 0xf520fa22, 0x0746f39f, 0x64412abb, 0xc14941d7,
+    0xa24e98f3, 0xfef454ec, 0x9df38dc8, 0x38fbe6a4, 0x5bfc3f80,
+    0xa99a363d, 0xca9def19, 0x6f958475, 0x0c925d51, 0x76b13ed7,
+    0x15b6e7f3, 0xb0be8c9f, 0xd3b955bb, 0x21df5c06, 0x42d88522,
+    0xe7d0ee4e, 0x84d7376a, 0xd86dfb75, 0xbb6a2251, 0x1e62493d,
+    0x7d659019, 0x8f0399a4, 0xec044080, 0x490c2bec, 0x2a0bf2c8,
+    0xf079b3d2, 0x937e6af6, 0x3676019a, 0x5571d8be, 0xa717d103,
+    0xc4100827, 0x6118634b, 0x021fba6f, 0x5ea57670, 0x3da2af54,
+    0x98aac438, 0xfbad1d1c, 0x09cb14a1, 0x6acccd85, 0xcfc4a6e9,
+    0xacc37fcd, 0xa051229c, 0xc356fbb8, 0x665e90d4, 0x055949f0,
+    0xf73f404d, 0x94389969, 0x3130f205, 0x52372b21, 0x0e8de73e,
+    0x6d8a3e1a, 0xc8825576, 0xab858c52, 0x59e385ef, 0x3ae45ccb,
+    0x9fec37a7, 0xfcebee83, 0x2699af99, 0x459e76bd, 0xe0961dd1,
+    0x8391c4f5, 0x71f7cd48, 0x12f0146c, 0xb7f87f00, 0xd4ffa624,
+    0x88456a3b, 0xeb42b31f, 0x4e4ad873, 0x2d4d0157, 0xdf2b08ea,
+    0xbc2cd1ce, 0x1924baa2, 0x7a236386, 0xed627dae, 0x8e65a48a,
+    0x2b6dcfe6, 0x486a16c2, 0xba0c1f7f, 0xd90bc65b, 0x7c03ad37,
+    0x1f047413, 0x43beb80c, 0x20b96128, 0x85b10a44, 0xe6b6d360,
+    0x14d0dadd, 0x77d703f9, 0xd2df6895, 0xb1d8b1b1, 0x6baaf0ab,
+    0x08ad298f, 0xada542e3, 0xcea29bc7, 0x3cc4927a, 0x5fc34b5e,
+    0xfacb2032, 0x99ccf916, 0xc5763509, 0xa671ec2d, 0x03798741,
+    0x607e5e65, 0x921857d8, 0xf11f8efc, 0x5417e590, 0x37103cb4,
+    0x3b8261e5, 0x5885b8c1, 0xfd8dd3ad, 0x9e8a0a89, 0x6cec0334,
+    0x0febda10, 0xaae3b17c, 0xc9e46858, 0x955ea447, 0xf6597d63,
+    0x5351160f, 0x3056cf2b, 0xc230c696, 0xa1371fb2, 0x043f74de,
+    0x6738adfa, 0xbd4aece0, 0xde4d35c4, 0x7b455ea8, 0x1842878c,
+    0xea248e31, 0x89235715, 0x2c2b3c79, 0x4f2ce55d, 0x13962942,
+    0x7091f066, 0xd5999b0a, 0xb69e422e, 0x44f84b93, 0x27ff92b7,
+    0x82f7f9db, 0xe1f020ff, 0x9bd34379, 0xf8d49a5d, 0x5ddcf131,
+    0x3edb2815, 0xccbd21a8, 0xafbaf88c, 0x0ab293e0, 0x69b54ac4,
+    0x350f86db, 0x56085fff, 0xf3003493, 0x9007edb7, 0x6261e40a,
+    0x01663d2e, 0xa46e5642, 0xc7698f66, 0x1d1bce7c, 0x7e1c1758,
+    0xdb147c34, 0xb813a510, 0x4a75acad, 0x29727589, 0x8c7a1ee5,
+    0xef7dc7c1, 0xb3c70bde, 0xd0c0d2fa, 0x75c8b996, 0x16cf60b2,
+    0xe4a9690f, 0x87aeb02b, 0x22a6db47, 0x41a10263, 0x4d335f32,
+    0x2e348616, 0x8b3ced7a, 0xe83b345e, 0x1a5d3de3, 0x795ae4c7,
+    0xdc528fab, 0xbf55568f, 0xe3ef9a90, 0x80e843b4, 0x25e028d8,
+    0x46e7f1fc, 0xb481f841, 0xd7862165, 0x728e4a09, 0x1189932d,
+    0xcbfbd237, 0xa8fc0b13, 0x0df4607f, 0x6ef3b95b, 0x9c95b0e6,
+    0xff9269c2, 0x5a9a02ae, 0x399ddb8a, 0x65271795, 0x0620ceb1,
+    0xa328a5dd, 0xc02f7cf9, 0x32497544, 0x514eac60, 0xf446c70c,
+    0x97411e28},
+   {0x00000000, 0x01b5fd1d, 0x036bfa3a, 0x02de0727, 0x06d7f474,
+    0x07620969, 0x05bc0e4e, 0x0409f353, 0x0dafe8e8, 0x0c1a15f5,
+    0x0ec412d2, 0x0f71efcf, 0x0b781c9c, 0x0acde181, 0x0813e6a6,
+    0x09a61bbb, 0x1b5fd1d0, 0x1aea2ccd, 0x18342bea, 0x1981d6f7,
+    0x1d8825a4, 0x1c3dd8b9, 0x1ee3df9e, 0x1f562283, 0x16f03938,
+    0x1745c425, 0x159bc302, 0x142e3e1f, 0x1027cd4c, 0x11923051,
+    0x134c3776, 0x12f9ca6b, 0x36bfa3a0, 0x370a5ebd, 0x35d4599a,
+    0x3461a487, 0x306857d4, 0x31ddaac9, 0x3303adee, 0x32b650f3,
+    0x3b104b48, 0x3aa5b655, 0x387bb172, 0x39ce4c6f, 0x3dc7bf3c,
+    0x3c724221, 0x3eac4506, 0x3f19b81b, 0x2de07270, 0x2c558f6d,
+    0x2e8b884a, 0x2f3e7557, 0x2b378604, 0x2a827b19, 0x285c7c3e,
+    0x29e98123, 0x204f9a98, 0x21fa6785, 0x232460a2, 0x22919dbf,
+    0x26986eec, 0x272d93f1, 0x25f394d6, 0x244669cb, 0x6d7f4740,
+    0x6ccaba5d, 0x6e14bd7a, 0x6fa14067, 0x6ba8b334, 0x6a1d4e29,
+    0x68c3490e, 0x6976b413, 0x60d0afa8, 0x616552b5, 0x63bb5592,
+    0x620ea88f, 0x66075bdc, 0x67b2a6c1, 0x656ca1e6, 0x64d95cfb,
+    0x76209690, 0x77956b8d, 0x754b6caa, 0x74fe91b7, 0x70f762e4,
+    0x71429ff9, 0x739c98de, 0x722965c3, 0x7b8f7e78, 0x7a3a8365,
+    0x78e48442, 0x7951795f, 0x7d588a0c, 0x7ced7711, 0x7e337036,
+    0x7f868d2b, 0x5bc0e4e0, 0x5a7519fd, 0x58ab1eda, 0x591ee3c7,
+    0x5d171094, 0x5ca2ed89, 0x5e7ceaae, 0x5fc917b3, 0x566f0c08,
+    0x57daf115, 0x5504f632, 0x54b10b2f, 0x50b8f87c, 0x510d0561,
+    0x53d30246, 0x5266ff5b, 0x409f3530, 0x412ac82d, 0x43f4cf0a,
+    0x42413217, 0x4648c144, 0x47fd3c59, 0x45233b7e, 0x4496c663,
+    0x4d30ddd8, 0x4c8520c5, 0x4e5b27e2, 0x4feedaff, 0x4be729ac,
+    0x4a52d4b1, 0x488cd396, 0x49392e8b, 0xdafe8e80, 0xdb4b739d,
+    0xd99574ba, 0xd82089a7, 0xdc297af4, 0xdd9c87e9, 0xdf4280ce,
+    0xdef77dd3, 0xd7516668, 0xd6e49b75, 0xd43a9c52, 0xd58f614f,
+    0xd186921c, 0xd0336f01, 0xd2ed6826, 0xd358953b, 0xc1a15f50,
+    0xc014a24d, 0xc2caa56a, 0xc37f5877, 0xc776ab24, 0xc6c35639,
+    0xc41d511e, 0xc5a8ac03, 0xcc0eb7b8, 0xcdbb4aa5, 0xcf654d82,
+    0xced0b09f, 0xcad943cc, 0xcb6cbed1, 0xc9b2b9f6, 0xc80744eb,
+    0xec412d20, 0xedf4d03d, 0xef2ad71a, 0xee9f2a07, 0xea96d954,
+    0xeb232449, 0xe9fd236e, 0xe848de73, 0xe1eec5c8, 0xe05b38d5,
+    0xe2853ff2, 0xe330c2ef, 0xe73931bc, 0xe68ccca1, 0xe452cb86,
+    0xe5e7369b, 0xf71efcf0, 0xf6ab01ed, 0xf47506ca, 0xf5c0fbd7,
+    0xf1c90884, 0xf07cf599, 0xf2a2f2be, 0xf3170fa3, 0xfab11418,
+    0xfb04e905, 0xf9daee22, 0xf86f133f, 0xfc66e06c, 0xfdd31d71,
+    0xff0d1a56, 0xfeb8e74b, 0xb781c9c0, 0xb63434dd, 0xb4ea33fa,
+    0xb55fcee7, 0xb1563db4, 0xb0e3c0a9, 0xb23dc78e, 0xb3883a93,
+    0xba2e2128, 0xbb9bdc35, 0xb945db12, 0xb8f0260f, 0xbcf9d55c,
+    0xbd4c2841, 0xbf922f66, 0xbe27d27b, 0xacde1810, 0xad6be50d,
+    0xafb5e22a, 0xae001f37, 0xaa09ec64, 0xabbc1179, 0xa962165e,
+    0xa8d7eb43, 0xa171f0f8, 0xa0c40de5, 0xa21a0ac2, 0xa3aff7df,
+    0xa7a6048c, 0xa613f991, 0xa4cdfeb6, 0xa57803ab, 0x813e6a60,
+    0x808b977d, 0x8255905a, 0x83e06d47, 0x87e99e14, 0x865c6309,
+    0x8482642e, 0x85379933, 0x8c918288, 0x8d247f95, 0x8ffa78b2,
+    0x8e4f85af, 0x8a4676fc, 0x8bf38be1, 0x892d8cc6, 0x889871db,
+    0x9a61bbb0, 0x9bd446ad, 0x990a418a, 0x98bfbc97, 0x9cb64fc4,
+    0x9d03b2d9, 0x9fddb5fe, 0x9e6848e3, 0x97ce5358, 0x967bae45,
+    0x94a5a962, 0x9510547f, 0x9119a72c, 0x90ac5a31, 0x92725d16,
+    0x93c7a00b},
+   {0x00000000, 0x6e8c1b41, 0xdd183682, 0xb3942dc3, 0x61416b45,
+    0x0fcd7004, 0xbc595dc7, 0xd2d54686, 0xc282d68a, 0xac0ecdcb,
+    0x1f9ae008, 0x7116fb49, 0xa3c3bdcf, 0xcd4fa68e, 0x7edb8b4d,
+    0x1057900c, 0x5e74ab55, 0x30f8b014, 0x836c9dd7, 0xede08696,
+    0x3f35c010, 0x51b9db51, 0xe22df692, 0x8ca1edd3, 0x9cf67ddf,
+    0xf27a669e, 0x41ee4b5d, 0x2f62501c, 0xfdb7169a, 0x933b0ddb,
+    0x20af2018, 0x4e233b59, 0xbce956aa, 0xd2654deb, 0x61f16028,
+    0x0f7d7b69, 0xdda83def, 0xb32426ae, 0x00b00b6d, 0x6e3c102c,
+    0x7e6b8020, 0x10e79b61, 0xa373b6a2, 0xcdffade3, 0x1f2aeb65,
+    0x71a6f024, 0xc232dde7, 0xacbec6a6, 0xe29dfdff, 0x8c11e6be,
+    0x3f85cb7d, 0x5109d03c, 0x83dc96ba, 0xed508dfb, 0x5ec4a038,
+    0x3048bb79, 0x201f2b75, 0x4e933034, 0xfd071df7, 0x938b06b6,
+    0x415e4030, 0x2fd25b71, 0x9c4676b2, 0xf2ca6df3, 0xa2a3ab15,
+    0xcc2fb054, 0x7fbb9d97, 0x113786d6, 0xc3e2c050, 0xad6edb11,
+    0x1efaf6d2, 0x7076ed93, 0x60217d9f, 0x0ead66de, 0xbd394b1d,
+    0xd3b5505c, 0x016016da, 0x6fec0d9b, 0xdc782058, 0xb2f43b19,
+    0xfcd70040, 0x925b1b01, 0x21cf36c2, 0x4f432d83, 0x9d966b05,
+    0xf31a7044, 0x408e5d87, 0x2e0246c6, 0x3e55d6ca, 0x50d9cd8b,
+    0xe34de048, 0x8dc1fb09, 0x5f14bd8f, 0x3198a6ce, 0x820c8b0d,
+    0xec80904c, 0x1e4afdbf, 0x70c6e6fe, 0xc352cb3d, 0xadded07c,
+    0x7f0b96fa, 0x11878dbb, 0xa213a078, 0xcc9fbb39, 0xdcc82b35,
+    0xb2443074, 0x01d01db7, 0x6f5c06f6, 0xbd894070, 0xd3055b31,
+    0x609176f2, 0x0e1d6db3, 0x403e56ea, 0x2eb24dab, 0x9d266068,
+    0xf3aa7b29, 0x217f3daf, 0x4ff326ee, 0xfc670b2d, 0x92eb106c,
+    0x82bc8060, 0xec309b21, 0x5fa4b6e2, 0x3128ada3, 0xe3fdeb25,
+    0x8d71f064, 0x3ee5dda7, 0x5069c6e6, 0x9e36506b, 0xf0ba4b2a,
+    0x432e66e9, 0x2da27da8, 0xff773b2e, 0x91fb206f, 0x226f0dac,
+    0x4ce316ed, 0x5cb486e1, 0x32389da0, 0x81acb063, 0xef20ab22,
+    0x3df5eda4, 0x5379f6e5, 0xe0eddb26, 0x8e61c067, 0xc042fb3e,
+    0xaecee07f, 0x1d5acdbc, 0x73d6d6fd, 0xa103907b, 0xcf8f8b3a,
+    0x7c1ba6f9, 0x1297bdb8, 0x02c02db4, 0x6c4c36f5, 0xdfd81b36,
+    0xb1540077, 0x638146f1, 0x0d0d5db0, 0xbe997073, 0xd0156b32,
+    0x22df06c1, 0x4c531d80, 0xffc73043, 0x914b2b02, 0x439e6d84,
+    0x2d1276c5, 0x9e865b06, 0xf00a4047, 0xe05dd04b, 0x8ed1cb0a,
+    0x3d45e6c9, 0x53c9fd88, 0x811cbb0e, 0xef90a04f, 0x5c048d8c,
+    0x328896cd, 0x7cabad94, 0x1227b6d5, 0xa1b39b16, 0xcf3f8057,
+    0x1deac6d1, 0x7366dd90, 0xc0f2f053, 0xae7eeb12, 0xbe297b1e,
+    0xd0a5605f, 0x63314d9c, 0x0dbd56dd, 0xdf68105b, 0xb1e40b1a,
+    0x027026d9, 0x6cfc3d98, 0x3c95fb7e, 0x5219e03f, 0xe18dcdfc,
+    0x8f01d6bd, 0x5dd4903b, 0x33588b7a, 0x80cca6b9, 0xee40bdf8,
+    0xfe172df4, 0x909b36b5, 0x230f1b76, 0x4d830037, 0x9f5646b1,
+    0xf1da5df0, 0x424e7033, 0x2cc26b72, 0x62e1502b, 0x0c6d4b6a,
+    0xbff966a9, 0xd1757de8, 0x03a03b6e, 0x6d2c202f, 0xdeb80dec,
+    0xb03416ad, 0xa06386a1, 0xceef9de0, 0x7d7bb023, 0x13f7ab62,
+    0xc122ede4, 0xafaef6a5, 0x1c3adb66, 0x72b6c027, 0x807cadd4,
+    0xeef0b695, 0x5d649b56, 0x33e88017, 0xe13dc691, 0x8fb1ddd0,
+    0x3c25f013, 0x52a9eb52, 0x42fe7b5e, 0x2c72601f, 0x9fe64ddc,
+    0xf16a569d, 0x23bf101b, 0x4d330b5a, 0xfea72699, 0x902b3dd8,
+    0xde080681, 0xb0841dc0, 0x03103003, 0x6d9c2b42, 0xbf496dc4,
+    0xd1c57685, 0x62515b46, 0x0cdd4007, 0x1c8ad00b, 0x7206cb4a,
+    0xc192e689, 0xaf1efdc8, 0x7dcbbb4e, 0x1347a00f, 0xa0d38dcc,
+    0xce5f968d},
+   {0x00000000, 0xe71da697, 0x154a4b6f, 0xf257edf8, 0x2a9496de,
+    0xcd893049, 0x3fdeddb1, 0xd8c37b26, 0x55292dbc, 0xb2348b2b,
+    0x406366d3, 0xa77ec044, 0x7fbdbb62, 0x98a01df5, 0x6af7f00d,
+    0x8dea569a, 0xaa525b78, 0x4d4ffdef, 0xbf181017, 0x5805b680,
+    0x80c6cda6, 0x67db6b31, 0x958c86c9, 0x7291205e, 0xff7b76c4,
+    0x1866d053, 0xea313dab, 0x0d2c9b3c, 0xd5efe01a, 0x32f2468d,
+    0xc0a5ab75, 0x27b80de2, 0x8fd5b0b1, 0x68c81626, 0x9a9ffbde,
+    0x7d825d49, 0xa541266f, 0x425c80f8, 0xb00b6d00, 0x5716cb97,
+    0xdafc9d0d, 0x3de13b9a, 0xcfb6d662, 0x28ab70f5, 0xf0680bd3,
+    0x1775ad44, 0xe52240bc, 0x023fe62b, 0x2587ebc9, 0xc29a4d5e,
+    0x30cda0a6, 0xd7d00631, 0x0f137d17, 0xe80edb80, 0x1a593678,
+    0xfd4490ef, 0x70aec675, 0x97b360e2, 0x65e48d1a, 0x82f92b8d,
+    0x5a3a50ab, 0xbd27f63c, 0x4f701bc4, 0xa86dbd53, 0xc4da6723,
+    0x23c7c1b4, 0xd1902c4c, 0x368d8adb, 0xee4ef1fd, 0x0953576a,
+    0xfb04ba92, 0x1c191c05, 0x91f34a9f, 0x76eeec08, 0x84b901f0,
+    0x63a4a767, 0xbb67dc41, 0x5c7a7ad6, 0xae2d972e, 0x493031b9,
+    0x6e883c5b, 0x89959acc, 0x7bc27734, 0x9cdfd1a3, 0x441caa85,
+    0xa3010c12, 0x5156e1ea, 0xb64b477d, 0x3ba111e7, 0xdcbcb770,
+    0x2eeb5a88, 0xc9f6fc1f, 0x11358739, 0xf62821ae, 0x047fcc56,
+    0xe3626ac1, 0x4b0fd792, 0xac127105, 0x5e459cfd, 0xb9583a6a,
+    0x619b414c, 0x8686e7db, 0x74d10a23, 0x93ccacb4, 0x1e26fa2e,
+    0xf93b5cb9, 0x0b6cb141, 0xec7117d6, 0x34b26cf0, 0xd3afca67,
+    0x21f8279f, 0xc6e58108, 0xe15d8cea, 0x06402a7d, 0xf417c785,
+    0x130a6112, 0xcbc91a34, 0x2cd4bca3, 0xde83515b, 0x399ef7cc,
+    0xb474a156, 0x536907c1, 0xa13eea39, 0x46234cae, 0x9ee03788,
+    0x79fd911f, 0x8baa7ce7, 0x6cb7da70, 0x52c5c807, 0xb5d86e90,
+    0x478f8368, 0xa09225ff, 0x78515ed9, 0x9f4cf84e, 0x6d1b15b6,
+    0x8a06b321, 0x07ece5bb, 0xe0f1432c, 0x12a6aed4, 0xf5bb0843,
+    0x2d787365, 0xca65d5f2, 0x3832380a, 0xdf2f9e9d, 0xf897937f,
+    0x1f8a35e8, 0xedddd810, 0x0ac07e87, 0xd20305a1, 0x351ea336,
+    0xc7494ece, 0x2054e859, 0xadbebec3, 0x4aa31854, 0xb8f4f5ac,
+    0x5fe9533b, 0x872a281d, 0x60378e8a, 0x92606372, 0x757dc5e5,
+    0xdd1078b6, 0x3a0dde21, 0xc85a33d9, 0x2f47954e, 0xf784ee68,
+    0x109948ff, 0xe2cea507, 0x05d30390, 0x8839550a, 0x6f24f39d,
+    0x9d731e65, 0x7a6eb8f2, 0xa2adc3d4, 0x45b06543, 0xb7e788bb,
+    0x50fa2e2c, 0x774223ce, 0x905f8559, 0x620868a1, 0x8515ce36,
+    0x5dd6b510, 0xbacb1387, 0x489cfe7f, 0xaf8158e8, 0x226b0e72,
+    0xc576a8e5, 0x3721451d, 0xd03ce38a, 0x08ff98ac, 0xefe23e3b,
+    0x1db5d3c3, 0xfaa87554, 0x961faf24, 0x710209b3, 0x8355e44b,
+    0x644842dc, 0xbc8b39fa, 0x5b969f6d, 0xa9c17295, 0x4edcd402,
+    0xc3368298, 0x242b240f, 0xd67cc9f7, 0x31616f60, 0xe9a21446,
+    0x0ebfb2d1, 0xfce85f29, 0x1bf5f9be, 0x3c4df45c, 0xdb5052cb,
+    0x2907bf33, 0xce1a19a4, 0x16d96282, 0xf1c4c415, 0x039329ed,
+    0xe48e8f7a, 0x6964d9e0, 0x8e797f77, 0x7c2e928f, 0x9b333418,
+    0x43f04f3e, 0xa4ede9a9, 0x56ba0451, 0xb1a7a2c6, 0x19ca1f95,
+    0xfed7b902, 0x0c8054fa, 0xeb9df26d, 0x335e894b, 0xd4432fdc,
+    0x2614c224, 0xc10964b3, 0x4ce33229, 0xabfe94be, 0x59a97946,
+    0xbeb4dfd1, 0x6677a4f7, 0x816a0260, 0x733def98, 0x9420490f,
+    0xb39844ed, 0x5485e27a, 0xa6d20f82, 0x41cfa915, 0x990cd233,
+    0x7e1174a4, 0x8c46995c, 0x6b5b3fcb, 0xe6b16951, 0x01accfc6,
+    0xf3fb223e, 0x14e684a9, 0xcc25ff8f, 0x2b385918, 0xd96fb4e0,
+    0x3e721277},
+   {0x00000000, 0xa58b900e, 0x9066265d, 0x35edb653, 0xfbbd4afb,
+    0x5e36daf5, 0x6bdb6ca6, 0xce50fca8, 0x2c0b93b7, 0x898003b9,
+    0xbc6db5ea, 0x19e625e4, 0xd7b6d94c, 0x723d4942, 0x47d0ff11,
+    0xe25b6f1f, 0x5817276e, 0xfd9cb760, 0xc8710133, 0x6dfa913d,
+    0xa3aa6d95, 0x0621fd9b, 0x33cc4bc8, 0x9647dbc6, 0x741cb4d9,
+    0xd19724d7, 0xe47a9284, 0x41f1028a, 0x8fa1fe22, 0x2a2a6e2c,
+    0x1fc7d87f, 0xba4c4871, 0xb02e4edc, 0x15a5ded2, 0x20486881,
+    0x85c3f88f, 0x4b930427, 0xee189429, 0xdbf5227a, 0x7e7eb274,
+    0x9c25dd6b, 0x39ae4d65, 0x0c43fb36, 0xa9c86b38, 0x67989790,
+    0xc213079e, 0xf7feb1cd, 0x527521c3, 0xe83969b2, 0x4db2f9bc,
+    0x785f4fef, 0xddd4dfe1, 0x13842349, 0xb60fb347, 0x83e20514,
+    0x2669951a, 0xc432fa05, 0x61b96a0b, 0x5454dc58, 0xf1df4c56,
+    0x3f8fb0fe, 0x9a0420f0, 0xafe996a3, 0x0a6206ad, 0xbb2d9bf9,
+    0x1ea60bf7, 0x2b4bbda4, 0x8ec02daa, 0x4090d102, 0xe51b410c,
+    0xd0f6f75f, 0x757d6751, 0x9726084e, 0x32ad9840, 0x07402e13,
+    0xa2cbbe1d, 0x6c9b42b5, 0xc910d2bb, 0xfcfd64e8, 0x5976f4e6,
+    0xe33abc97, 0x46b12c99, 0x735c9aca, 0xd6d70ac4, 0x1887f66c,
+    0xbd0c6662, 0x88e1d031, 0x2d6a403f, 0xcf312f20, 0x6ababf2e,
+    0x5f57097d, 0xfadc9973, 0x348c65db, 0x9107f5d5, 0xa4ea4386,
+    0x0161d388, 0x0b03d525, 0xae88452b, 0x9b65f378, 0x3eee6376,
+    0xf0be9fde, 0x55350fd0, 0x60d8b983, 0xc553298d, 0x27084692,
+    0x8283d69c, 0xb76e60cf, 0x12e5f0c1, 0xdcb50c69, 0x793e9c67,
+    0x4cd32a34, 0xe958ba3a, 0x5314f24b, 0xf69f6245, 0xc372d416,
+    0x66f94418, 0xa8a9b8b0, 0x0d2228be, 0x38cf9eed, 0x9d440ee3,
+    0x7f1f61fc, 0xda94f1f2, 0xef7947a1, 0x4af2d7af, 0x84a22b07,
+    0x2129bb09, 0x14c40d5a, 0xb14f9d54, 0xad2a31b3, 0x08a1a1bd,
+    0x3d4c17ee, 0x98c787e0, 0x56977b48, 0xf31ceb46, 0xc6f15d15,
+    0x637acd1b, 0x8121a204, 0x24aa320a, 0x11478459, 0xb4cc1457,
+    0x7a9ce8ff, 0xdf1778f1, 0xeafacea2, 0x4f715eac, 0xf53d16dd,
+    0x50b686d3, 0x655b3080, 0xc0d0a08e, 0x0e805c26, 0xab0bcc28,
+    0x9ee67a7b, 0x3b6dea75, 0xd936856a, 0x7cbd1564, 0x4950a337,
+    0xecdb3339, 0x228bcf91, 0x87005f9f, 0xb2ede9cc, 0x176679c2,
+    0x1d047f6f, 0xb88fef61, 0x8d625932, 0x28e9c93c, 0xe6b93594,
+    0x4332a59a, 0x76df13c9, 0xd35483c7, 0x310fecd8, 0x94847cd6,
+    0xa169ca85, 0x04e25a8b, 0xcab2a623, 0x6f39362d, 0x5ad4807e,
+    0xff5f1070, 0x45135801, 0xe098c80f, 0xd5757e5c, 0x70feee52,
+    0xbeae12fa, 0x1b2582f4, 0x2ec834a7, 0x8b43a4a9, 0x6918cbb6,
+    0xcc935bb8, 0xf97eedeb, 0x5cf57de5, 0x92a5814d, 0x372e1143,
+    0x02c3a710, 0xa748371e, 0x1607aa4a, 0xb38c3a44, 0x86618c17,
+    0x23ea1c19, 0xedbae0b1, 0x483170bf, 0x7ddcc6ec, 0xd85756e2,
+    0x3a0c39fd, 0x9f87a9f3, 0xaa6a1fa0, 0x0fe18fae, 0xc1b17306,
+    0x643ae308, 0x51d7555b, 0xf45cc555, 0x4e108d24, 0xeb9b1d2a,
+    0xde76ab79, 0x7bfd3b77, 0xb5adc7df, 0x102657d1, 0x25cbe182,
+    0x8040718c, 0x621b1e93, 0xc7908e9d, 0xf27d38ce, 0x57f6a8c0,
+    0x99a65468, 0x3c2dc466, 0x09c07235, 0xac4be23b, 0xa629e496,
+    0x03a27498, 0x364fc2cb, 0x93c452c5, 0x5d94ae6d, 0xf81f3e63,
+    0xcdf28830, 0x6879183e, 0x8a227721, 0x2fa9e72f, 0x1a44517c,
+    0xbfcfc172, 0x719f3dda, 0xd414add4, 0xe1f91b87, 0x44728b89,
+    0xfe3ec3f8, 0x5bb553f6, 0x6e58e5a5, 0xcbd375ab, 0x05838903,
+    0xa008190d, 0x95e5af5e, 0x306e3f50, 0xd235504f, 0x77bec041,
+    0x42537612, 0xe7d8e61c, 0x29881ab4, 0x8c038aba, 0xb9ee3ce9,
+    0x1c65ace7}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x0000000000000000, 0x0e908ba500000000, 0x5d26669000000000,
+    0x53b6ed3500000000, 0xfb4abdfb00000000, 0xf5da365e00000000,
+    0xa66cdb6b00000000, 0xa8fc50ce00000000, 0xb7930b2c00000000,
+    0xb903808900000000, 0xeab56dbc00000000, 0xe425e61900000000,
+    0x4cd9b6d700000000, 0x42493d7200000000, 0x11ffd04700000000,
+    0x1f6f5be200000000, 0x6e27175800000000, 0x60b79cfd00000000,
+    0x330171c800000000, 0x3d91fa6d00000000, 0x956daaa300000000,
+    0x9bfd210600000000, 0xc84bcc3300000000, 0xc6db479600000000,
+    0xd9b41c7400000000, 0xd72497d100000000, 0x84927ae400000000,
+    0x8a02f14100000000, 0x22fea18f00000000, 0x2c6e2a2a00000000,
+    0x7fd8c71f00000000, 0x71484cba00000000, 0xdc4e2eb000000000,
+    0xd2dea51500000000, 0x8168482000000000, 0x8ff8c38500000000,
+    0x2704934b00000000, 0x299418ee00000000, 0x7a22f5db00000000,
+    0x74b27e7e00000000, 0x6bdd259c00000000, 0x654dae3900000000,
+    0x36fb430c00000000, 0x386bc8a900000000, 0x9097986700000000,
+    0x9e0713c200000000, 0xcdb1fef700000000, 0xc321755200000000,
+    0xb26939e800000000, 0xbcf9b24d00000000, 0xef4f5f7800000000,
+    0xe1dfd4dd00000000, 0x4923841300000000, 0x47b30fb600000000,
+    0x1405e28300000000, 0x1a95692600000000, 0x05fa32c400000000,
+    0x0b6ab96100000000, 0x58dc545400000000, 0x564cdff100000000,
+    0xfeb08f3f00000000, 0xf020049a00000000, 0xa396e9af00000000,
+    0xad06620a00000000, 0xf99b2dbb00000000, 0xf70ba61e00000000,
+    0xa4bd4b2b00000000, 0xaa2dc08e00000000, 0x02d1904000000000,
+    0x0c411be500000000, 0x5ff7f6d000000000, 0x51677d7500000000,
+    0x4e08269700000000, 0x4098ad3200000000, 0x132e400700000000,
+    0x1dbecba200000000, 0xb5429b6c00000000, 0xbbd210c900000000,
+    0xe864fdfc00000000, 0xe6f4765900000000, 0x97bc3ae300000000,
+    0x992cb14600000000, 0xca9a5c7300000000, 0xc40ad7d600000000,
+    0x6cf6871800000000, 0x62660cbd00000000, 0x31d0e18800000000,
+    0x3f406a2d00000000, 0x202f31cf00000000, 0x2ebfba6a00000000,
+    0x7d09575f00000000, 0x7399dcfa00000000, 0xdb658c3400000000,
+    0xd5f5079100000000, 0x8643eaa400000000, 0x88d3610100000000,
+    0x25d5030b00000000, 0x2b4588ae00000000, 0x78f3659b00000000,
+    0x7663ee3e00000000, 0xde9fbef000000000, 0xd00f355500000000,
+    0x83b9d86000000000, 0x8d2953c500000000, 0x9246082700000000,
+    0x9cd6838200000000, 0xcf606eb700000000, 0xc1f0e51200000000,
+    0x690cb5dc00000000, 0x679c3e7900000000, 0x342ad34c00000000,
+    0x3aba58e900000000, 0x4bf2145300000000, 0x45629ff600000000,
+    0x16d472c300000000, 0x1844f96600000000, 0xb0b8a9a800000000,
+    0xbe28220d00000000, 0xed9ecf3800000000, 0xe30e449d00000000,
+    0xfc611f7f00000000, 0xf2f194da00000000, 0xa14779ef00000000,
+    0xafd7f24a00000000, 0x072ba28400000000, 0x09bb292100000000,
+    0x5a0dc41400000000, 0x549d4fb100000000, 0xb3312aad00000000,
+    0xbda1a10800000000, 0xee174c3d00000000, 0xe087c79800000000,
+    0x487b975600000000, 0x46eb1cf300000000, 0x155df1c600000000,
+    0x1bcd7a6300000000, 0x04a2218100000000, 0x0a32aa2400000000,
+    0x5984471100000000, 0x5714ccb400000000, 0xffe89c7a00000000,
+    0xf17817df00000000, 0xa2cefaea00000000, 0xac5e714f00000000,
+    0xdd163df500000000, 0xd386b65000000000, 0x80305b6500000000,
+    0x8ea0d0c000000000, 0x265c800e00000000, 0x28cc0bab00000000,
+    0x7b7ae69e00000000, 0x75ea6d3b00000000, 0x6a8536d900000000,
+    0x6415bd7c00000000, 0x37a3504900000000, 0x3933dbec00000000,
+    0x91cf8b2200000000, 0x9f5f008700000000, 0xcce9edb200000000,
+    0xc279661700000000, 0x6f7f041d00000000, 0x61ef8fb800000000,
+    0x3259628d00000000, 0x3cc9e92800000000, 0x9435b9e600000000,
+    0x9aa5324300000000, 0xc913df7600000000, 0xc78354d300000000,
+    0xd8ec0f3100000000, 0xd67c849400000000, 0x85ca69a100000000,
+    0x8b5ae20400000000, 0x23a6b2ca00000000, 0x2d36396f00000000,
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+    0xb41a882900000000, 0xba8a038c00000000, 0xe93ceeb900000000,
+    0xe7ac651c00000000},
+   {0x0000000000000000, 0x97a61de700000000, 0x6f4b4a1500000000,
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+    0x7712723e00000000},
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+    0x63f63b2d00000000, 0xb21edc2300000000, 0xc127f43000000000,
+    0x10cf133e00000000, 0xaf139b6100000000, 0x7efb7c6f00000000,
+    0x0dc2547c00000000, 0xdc2ab37200000000, 0xebb0045a00000000,
+    0x3a58e35400000000, 0x4961cb4700000000, 0x98892c4900000000,
+    0x37d8daf800000000, 0xe6303df600000000, 0x950915e500000000,
+    0x44e1f2eb00000000, 0x737b45c300000000, 0xa293a2cd00000000,
+    0xd1aa8ade00000000, 0x00426dd000000000, 0xbf9ee58f00000000,
+    0x6e76028100000000, 0x1d4f2a9200000000, 0xcca7cd9c00000000,
+    0xfb3d7ab400000000, 0x2ad59dba00000000, 0x59ecb5a900000000,
+    0x880452a700000000},
+   {0x0000000000000000, 0xaa05daf100000000, 0x150dc53800000000,
+    0xbf081fc900000000, 0x2a1a8a7100000000, 0x801f508000000000,
+    0x3f174f4900000000, 0x951295b800000000, 0x543414e300000000,
+    0xfe31ce1200000000, 0x4139d1db00000000, 0xeb3c0b2a00000000,
+    0x7e2e9e9200000000, 0xd42b446300000000, 0x6b235baa00000000,
+    0xc126815b00000000, 0xe96e591d00000000, 0x436b83ec00000000,
+    0xfc639c2500000000, 0x566646d400000000, 0xc374d36c00000000,
+    0x6971099d00000000, 0xd679165400000000, 0x7c7ccca500000000,
+    0xbd5a4dfe00000000, 0x175f970f00000000, 0xa85788c600000000,
+    0x0252523700000000, 0x9740c78f00000000, 0x3d451d7e00000000,
+    0x824d02b700000000, 0x2848d84600000000, 0xd2ddb23a00000000,
+    0x78d868cb00000000, 0xc7d0770200000000, 0x6dd5adf300000000,
+    0xf8c7384b00000000, 0x52c2e2ba00000000, 0xedcafd7300000000,
+    0x47cf278200000000, 0x86e9a6d900000000, 0x2cec7c2800000000,
+    0x93e463e100000000, 0x39e1b91000000000, 0xacf32ca800000000,
+    0x06f6f65900000000, 0xb9fee99000000000, 0x13fb336100000000,
+    0x3bb3eb2700000000, 0x91b631d600000000, 0x2ebe2e1f00000000,
+    0x84bbf4ee00000000, 0x11a9615600000000, 0xbbacbba700000000,
+    0x04a4a46e00000000, 0xaea17e9f00000000, 0x6f87ffc400000000,
+    0xc582253500000000, 0x7a8a3afc00000000, 0xd08fe00d00000000,
+    0x459d75b500000000, 0xef98af4400000000, 0x5090b08d00000000,
+    0xfa956a7c00000000, 0xa4bb657500000000, 0x0ebebf8400000000,
+    0xb1b6a04d00000000, 0x1bb37abc00000000, 0x8ea1ef0400000000,
+    0x24a435f500000000, 0x9bac2a3c00000000, 0x31a9f0cd00000000,
+    0xf08f719600000000, 0x5a8aab6700000000, 0xe582b4ae00000000,
+    0x4f876e5f00000000, 0xda95fbe700000000, 0x7090211600000000,
+    0xcf983edf00000000, 0x659de42e00000000, 0x4dd53c6800000000,
+    0xe7d0e69900000000, 0x58d8f95000000000, 0xf2dd23a100000000,
+    0x67cfb61900000000, 0xcdca6ce800000000, 0x72c2732100000000,
+    0xd8c7a9d000000000, 0x19e1288b00000000, 0xb3e4f27a00000000,
+    0x0cecedb300000000, 0xa6e9374200000000, 0x33fba2fa00000000,
+    0x99fe780b00000000, 0x26f667c200000000, 0x8cf3bd3300000000,
+    0x7666d74f00000000, 0xdc630dbe00000000, 0x636b127700000000,
+    0xc96ec88600000000, 0x5c7c5d3e00000000, 0xf67987cf00000000,
+    0x4971980600000000, 0xe37442f700000000, 0x2252c3ac00000000,
+    0x8857195d00000000, 0x375f069400000000, 0x9d5adc6500000000,
+    0x084849dd00000000, 0xa24d932c00000000, 0x1d458ce500000000,
+    0xb740561400000000, 0x9f088e5200000000, 0x350d54a300000000,
+    0x8a054b6a00000000, 0x2000919b00000000, 0xb512042300000000,
+    0x1f17ded200000000, 0xa01fc11b00000000, 0x0a1a1bea00000000,
+    0xcb3c9ab100000000, 0x6139404000000000, 0xde315f8900000000,
+    0x7434857800000000, 0xe12610c000000000, 0x4b23ca3100000000,
+    0xf42bd5f800000000, 0x5e2e0f0900000000, 0x4877cbea00000000,
+    0xe272111b00000000, 0x5d7a0ed200000000, 0xf77fd42300000000,
+    0x626d419b00000000, 0xc8689b6a00000000, 0x776084a300000000,
+    0xdd655e5200000000, 0x1c43df0900000000, 0xb64605f800000000,
+    0x094e1a3100000000, 0xa34bc0c000000000, 0x3659557800000000,
+    0x9c5c8f8900000000, 0x2354904000000000, 0x89514ab100000000,
+    0xa11992f700000000, 0x0b1c480600000000, 0xb41457cf00000000,
+    0x1e118d3e00000000, 0x8b03188600000000, 0x2106c27700000000,
+    0x9e0eddbe00000000, 0x340b074f00000000, 0xf52d861400000000,
+    0x5f285ce500000000, 0xe020432c00000000, 0x4a2599dd00000000,
+    0xdf370c6500000000, 0x7532d69400000000, 0xca3ac95d00000000,
+    0x603f13ac00000000, 0x9aaa79d000000000, 0x30afa32100000000,
+    0x8fa7bce800000000, 0x25a2661900000000, 0xb0b0f3a100000000,
+    0x1ab5295000000000, 0xa5bd369900000000, 0x0fb8ec6800000000,
+    0xce9e6d3300000000, 0x649bb7c200000000, 0xdb93a80b00000000,
+    0x719672fa00000000, 0xe484e74200000000, 0x4e813db300000000,
+    0xf189227a00000000, 0x5b8cf88b00000000, 0x73c420cd00000000,
+    0xd9c1fa3c00000000, 0x66c9e5f500000000, 0xcccc3f0400000000,
+    0x59deaabc00000000, 0xf3db704d00000000, 0x4cd36f8400000000,
+    0xe6d6b57500000000, 0x27f0342e00000000, 0x8df5eedf00000000,
+    0x32fdf11600000000, 0x98f82be700000000, 0x0deabe5f00000000,
+    0xa7ef64ae00000000, 0x18e77b6700000000, 0xb2e2a19600000000,
+    0xecccae9f00000000, 0x46c9746e00000000, 0xf9c16ba700000000,
+    0x53c4b15600000000, 0xc6d624ee00000000, 0x6cd3fe1f00000000,
+    0xd3dbe1d600000000, 0x79de3b2700000000, 0xb8f8ba7c00000000,
+    0x12fd608d00000000, 0xadf57f4400000000, 0x07f0a5b500000000,
+    0x92e2300d00000000, 0x38e7eafc00000000, 0x87eff53500000000,
+    0x2dea2fc400000000, 0x05a2f78200000000, 0xafa72d7300000000,
+    0x10af32ba00000000, 0xbaaae84b00000000, 0x2fb87df300000000,
+    0x85bda70200000000, 0x3ab5b8cb00000000, 0x90b0623a00000000,
+    0x5196e36100000000, 0xfb93399000000000, 0x449b265900000000,
+    0xee9efca800000000, 0x7b8c691000000000, 0xd189b3e100000000,
+    0x6e81ac2800000000, 0xc48476d900000000, 0x3e111ca500000000,
+    0x9414c65400000000, 0x2b1cd99d00000000, 0x8119036c00000000,
+    0x140b96d400000000, 0xbe0e4c2500000000, 0x010653ec00000000,
+    0xab03891d00000000, 0x6a25084600000000, 0xc020d2b700000000,
+    0x7f28cd7e00000000, 0xd52d178f00000000, 0x403f823700000000,
+    0xea3a58c600000000, 0x5532470f00000000, 0xff379dfe00000000,
+    0xd77f45b800000000, 0x7d7a9f4900000000, 0xc272808000000000,
+    0x68775a7100000000, 0xfd65cfc900000000, 0x5760153800000000,
+    0xe8680af100000000, 0x426dd00000000000, 0x834b515b00000000,
+    0x294e8baa00000000, 0x9646946300000000, 0x3c434e9200000000,
+    0xa951db2a00000000, 0x035401db00000000, 0xbc5c1e1200000000,
+    0x1659c4e300000000}};
+
+#else /* W == 4 */
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xae689191, 0x87a02563, 0x29c8b4f2, 0xd4314c87,
+    0x7a59dd16, 0x539169e4, 0xfdf9f875, 0x73139f4f, 0xdd7b0ede,
+    0xf4b3ba2c, 0x5adb2bbd, 0xa722d3c8, 0x094a4259, 0x2082f6ab,
+    0x8eea673a, 0xe6273e9e, 0x484faf0f, 0x61871bfd, 0xcfef8a6c,
+    0x32167219, 0x9c7ee388, 0xb5b6577a, 0x1bdec6eb, 0x9534a1d1,
+    0x3b5c3040, 0x129484b2, 0xbcfc1523, 0x4105ed56, 0xef6d7cc7,
+    0xc6a5c835, 0x68cd59a4, 0x173f7b7d, 0xb957eaec, 0x909f5e1e,
+    0x3ef7cf8f, 0xc30e37fa, 0x6d66a66b, 0x44ae1299, 0xeac68308,
+    0x642ce432, 0xca4475a3, 0xe38cc151, 0x4de450c0, 0xb01da8b5,
+    0x1e753924, 0x37bd8dd6, 0x99d51c47, 0xf11845e3, 0x5f70d472,
+    0x76b86080, 0xd8d0f111, 0x25290964, 0x8b4198f5, 0xa2892c07,
+    0x0ce1bd96, 0x820bdaac, 0x2c634b3d, 0x05abffcf, 0xabc36e5e,
+    0x563a962b, 0xf85207ba, 0xd19ab348, 0x7ff222d9, 0x2e7ef6fa,
+    0x8016676b, 0xa9ded399, 0x07b64208, 0xfa4fba7d, 0x54272bec,
+    0x7def9f1e, 0xd3870e8f, 0x5d6d69b5, 0xf305f824, 0xdacd4cd6,
+    0x74a5dd47, 0x895c2532, 0x2734b4a3, 0x0efc0051, 0xa09491c0,
+    0xc859c864, 0x663159f5, 0x4ff9ed07, 0xe1917c96, 0x1c6884e3,
+    0xb2001572, 0x9bc8a180, 0x35a03011, 0xbb4a572b, 0x1522c6ba,
+    0x3cea7248, 0x9282e3d9, 0x6f7b1bac, 0xc1138a3d, 0xe8db3ecf,
+    0x46b3af5e, 0x39418d87, 0x97291c16, 0xbee1a8e4, 0x10893975,
+    0xed70c100, 0x43185091, 0x6ad0e463, 0xc4b875f2, 0x4a5212c8,
+    0xe43a8359, 0xcdf237ab, 0x639aa63a, 0x9e635e4f, 0x300bcfde,
+    0x19c37b2c, 0xb7abeabd, 0xdf66b319, 0x710e2288, 0x58c6967a,
+    0xf6ae07eb, 0x0b57ff9e, 0xa53f6e0f, 0x8cf7dafd, 0x229f4b6c,
+    0xac752c56, 0x021dbdc7, 0x2bd50935, 0x85bd98a4, 0x784460d1,
+    0xd62cf140, 0xffe445b2, 0x518cd423, 0x5cfdedf4, 0xf2957c65,
+    0xdb5dc897, 0x75355906, 0x88cca173, 0x26a430e2, 0x0f6c8410,
+    0xa1041581, 0x2fee72bb, 0x8186e32a, 0xa84e57d8, 0x0626c649,
+    0xfbdf3e3c, 0x55b7afad, 0x7c7f1b5f, 0xd2178ace, 0xbadad36a,
+    0x14b242fb, 0x3d7af609, 0x93126798, 0x6eeb9fed, 0xc0830e7c,
+    0xe94bba8e, 0x47232b1f, 0xc9c94c25, 0x67a1ddb4, 0x4e696946,
+    0xe001f8d7, 0x1df800a2, 0xb3909133, 0x9a5825c1, 0x3430b450,
+    0x4bc29689, 0xe5aa0718, 0xcc62b3ea, 0x620a227b, 0x9ff3da0e,
+    0x319b4b9f, 0x1853ff6d, 0xb63b6efc, 0x38d109c6, 0x96b99857,
+    0xbf712ca5, 0x1119bd34, 0xece04541, 0x4288d4d0, 0x6b406022,
+    0xc528f1b3, 0xade5a817, 0x038d3986, 0x2a458d74, 0x842d1ce5,
+    0x79d4e490, 0xd7bc7501, 0xfe74c1f3, 0x501c5062, 0xdef63758,
+    0x709ea6c9, 0x5956123b, 0xf73e83aa, 0x0ac77bdf, 0xa4afea4e,
+    0x8d675ebc, 0x230fcf2d, 0x72831b0e, 0xdceb8a9f, 0xf5233e6d,
+    0x5b4baffc, 0xa6b25789, 0x08dac618, 0x211272ea, 0x8f7ae37b,
+    0x01908441, 0xaff815d0, 0x8630a122, 0x285830b3, 0xd5a1c8c6,
+    0x7bc95957, 0x5201eda5, 0xfc697c34, 0x94a42590, 0x3accb401,
+    0x130400f3, 0xbd6c9162, 0x40956917, 0xeefdf886, 0xc7354c74,
+    0x695ddde5, 0xe7b7badf, 0x49df2b4e, 0x60179fbc, 0xce7f0e2d,
+    0x3386f658, 0x9dee67c9, 0xb426d33b, 0x1a4e42aa, 0x65bc6073,
+    0xcbd4f1e2, 0xe21c4510, 0x4c74d481, 0xb18d2cf4, 0x1fe5bd65,
+    0x362d0997, 0x98459806, 0x16afff3c, 0xb8c76ead, 0x910fda5f,
+    0x3f674bce, 0xc29eb3bb, 0x6cf6222a, 0x453e96d8, 0xeb560749,
+    0x839b5eed, 0x2df3cf7c, 0x043b7b8e, 0xaa53ea1f, 0x57aa126a,
+    0xf9c283fb, 0xd00a3709, 0x7e62a698, 0xf088c1a2, 0x5ee05033,
+    0x7728e4c1, 0xd9407550, 0x24b98d25, 0x8ad11cb4, 0xa319a846,
+    0x0d7139d7},
+   {0x00000000, 0xb9fbdbe8, 0xa886b191, 0x117d6a79, 0x8a7c6563,
+    0x3387be8b, 0x22fad4f2, 0x9b010f1a, 0xcf89cc87, 0x7672176f,
+    0x670f7d16, 0xdef4a6fe, 0x45f5a9e4, 0xfc0e720c, 0xed731875,
+    0x5488c39d, 0x44629f4f, 0xfd9944a7, 0xece42ede, 0x551ff536,
+    0xce1efa2c, 0x77e521c4, 0x66984bbd, 0xdf639055, 0x8beb53c8,
+    0x32108820, 0x236de259, 0x9a9639b1, 0x019736ab, 0xb86ced43,
+    0xa911873a, 0x10ea5cd2, 0x88c53e9e, 0x313ee576, 0x20438f0f,
+    0x99b854e7, 0x02b95bfd, 0xbb428015, 0xaa3fea6c, 0x13c43184,
+    0x474cf219, 0xfeb729f1, 0xefca4388, 0x56319860, 0xcd30977a,
+    0x74cb4c92, 0x65b626eb, 0xdc4dfd03, 0xcca7a1d1, 0x755c7a39,
+    0x64211040, 0xdddacba8, 0x46dbc4b2, 0xff201f5a, 0xee5d7523,
+    0x57a6aecb, 0x032e6d56, 0xbad5b6be, 0xaba8dcc7, 0x1253072f,
+    0x89520835, 0x30a9d3dd, 0x21d4b9a4, 0x982f624c, 0xcafb7b7d,
+    0x7300a095, 0x627dcaec, 0xdb861104, 0x40871e1e, 0xf97cc5f6,
+    0xe801af8f, 0x51fa7467, 0x0572b7fa, 0xbc896c12, 0xadf4066b,
+    0x140fdd83, 0x8f0ed299, 0x36f50971, 0x27886308, 0x9e73b8e0,
+    0x8e99e432, 0x37623fda, 0x261f55a3, 0x9fe48e4b, 0x04e58151,
+    0xbd1e5ab9, 0xac6330c0, 0x1598eb28, 0x411028b5, 0xf8ebf35d,
+    0xe9969924, 0x506d42cc, 0xcb6c4dd6, 0x7297963e, 0x63eafc47,
+    0xda1127af, 0x423e45e3, 0xfbc59e0b, 0xeab8f472, 0x53432f9a,
+    0xc8422080, 0x71b9fb68, 0x60c49111, 0xd93f4af9, 0x8db78964,
+    0x344c528c, 0x253138f5, 0x9ccae31d, 0x07cbec07, 0xbe3037ef,
+    0xaf4d5d96, 0x16b6867e, 0x065cdaac, 0xbfa70144, 0xaeda6b3d,
+    0x1721b0d5, 0x8c20bfcf, 0x35db6427, 0x24a60e5e, 0x9d5dd5b6,
+    0xc9d5162b, 0x702ecdc3, 0x6153a7ba, 0xd8a87c52, 0x43a97348,
+    0xfa52a8a0, 0xeb2fc2d9, 0x52d41931, 0x4e87f0bb, 0xf77c2b53,
+    0xe601412a, 0x5ffa9ac2, 0xc4fb95d8, 0x7d004e30, 0x6c7d2449,
+    0xd586ffa1, 0x810e3c3c, 0x38f5e7d4, 0x29888dad, 0x90735645,
+    0x0b72595f, 0xb28982b7, 0xa3f4e8ce, 0x1a0f3326, 0x0ae56ff4,
+    0xb31eb41c, 0xa263de65, 0x1b98058d, 0x80990a97, 0x3962d17f,
+    0x281fbb06, 0x91e460ee, 0xc56ca373, 0x7c97789b, 0x6dea12e2,
+    0xd411c90a, 0x4f10c610, 0xf6eb1df8, 0xe7967781, 0x5e6dac69,
+    0xc642ce25, 0x7fb915cd, 0x6ec47fb4, 0xd73fa45c, 0x4c3eab46,
+    0xf5c570ae, 0xe4b81ad7, 0x5d43c13f, 0x09cb02a2, 0xb030d94a,
+    0xa14db333, 0x18b668db, 0x83b767c1, 0x3a4cbc29, 0x2b31d650,
+    0x92ca0db8, 0x8220516a, 0x3bdb8a82, 0x2aa6e0fb, 0x935d3b13,
+    0x085c3409, 0xb1a7efe1, 0xa0da8598, 0x19215e70, 0x4da99ded,
+    0xf4524605, 0xe52f2c7c, 0x5cd4f794, 0xc7d5f88e, 0x7e2e2366,
+    0x6f53491f, 0xd6a892f7, 0x847c8bc6, 0x3d87502e, 0x2cfa3a57,
+    0x9501e1bf, 0x0e00eea5, 0xb7fb354d, 0xa6865f34, 0x1f7d84dc,
+    0x4bf54741, 0xf20e9ca9, 0xe373f6d0, 0x5a882d38, 0xc1892222,
+    0x7872f9ca, 0x690f93b3, 0xd0f4485b, 0xc01e1489, 0x79e5cf61,
+    0x6898a518, 0xd1637ef0, 0x4a6271ea, 0xf399aa02, 0xe2e4c07b,
+    0x5b1f1b93, 0x0f97d80e, 0xb66c03e6, 0xa711699f, 0x1eeab277,
+    0x85ebbd6d, 0x3c106685, 0x2d6d0cfc, 0x9496d714, 0x0cb9b558,
+    0xb5426eb0, 0xa43f04c9, 0x1dc4df21, 0x86c5d03b, 0x3f3e0bd3,
+    0x2e4361aa, 0x97b8ba42, 0xc33079df, 0x7acba237, 0x6bb6c84e,
+    0xd24d13a6, 0x494c1cbc, 0xf0b7c754, 0xe1caad2d, 0x583176c5,
+    0x48db2a17, 0xf120f1ff, 0xe05d9b86, 0x59a6406e, 0xc2a74f74,
+    0x7b5c949c, 0x6a21fee5, 0xd3da250d, 0x8752e690, 0x3ea93d78,
+    0x2fd45701, 0x962f8ce9, 0x0d2e83f3, 0xb4d5581b, 0xa5a83262,
+    0x1c53e98a},
+   {0x00000000, 0x9d0fe176, 0xe16ec4ad, 0x7c6125db, 0x19ac8f1b,
+    0x84a36e6d, 0xf8c24bb6, 0x65cdaac0, 0x33591e36, 0xae56ff40,
+    0xd237da9b, 0x4f383bed, 0x2af5912d, 0xb7fa705b, 0xcb9b5580,
+    0x5694b4f6, 0x66b23c6c, 0xfbbddd1a, 0x87dcf8c1, 0x1ad319b7,
+    0x7f1eb377, 0xe2115201, 0x9e7077da, 0x037f96ac, 0x55eb225a,
+    0xc8e4c32c, 0xb485e6f7, 0x298a0781, 0x4c47ad41, 0xd1484c37,
+    0xad2969ec, 0x3026889a, 0xcd6478d8, 0x506b99ae, 0x2c0abc75,
+    0xb1055d03, 0xd4c8f7c3, 0x49c716b5, 0x35a6336e, 0xa8a9d218,
+    0xfe3d66ee, 0x63328798, 0x1f53a243, 0x825c4335, 0xe791e9f5,
+    0x7a9e0883, 0x06ff2d58, 0x9bf0cc2e, 0xabd644b4, 0x36d9a5c2,
+    0x4ab88019, 0xd7b7616f, 0xb27acbaf, 0x2f752ad9, 0x53140f02,
+    0xce1bee74, 0x988f5a82, 0x0580bbf4, 0x79e19e2f, 0xe4ee7f59,
+    0x8123d599, 0x1c2c34ef, 0x604d1134, 0xfd42f042, 0x41b9f7f1,
+    0xdcb61687, 0xa0d7335c, 0x3dd8d22a, 0x581578ea, 0xc51a999c,
+    0xb97bbc47, 0x24745d31, 0x72e0e9c7, 0xefef08b1, 0x938e2d6a,
+    0x0e81cc1c, 0x6b4c66dc, 0xf64387aa, 0x8a22a271, 0x172d4307,
+    0x270bcb9d, 0xba042aeb, 0xc6650f30, 0x5b6aee46, 0x3ea74486,
+    0xa3a8a5f0, 0xdfc9802b, 0x42c6615d, 0x1452d5ab, 0x895d34dd,
+    0xf53c1106, 0x6833f070, 0x0dfe5ab0, 0x90f1bbc6, 0xec909e1d,
+    0x719f7f6b, 0x8cdd8f29, 0x11d26e5f, 0x6db34b84, 0xf0bcaaf2,
+    0x95710032, 0x087ee144, 0x741fc49f, 0xe91025e9, 0xbf84911f,
+    0x228b7069, 0x5eea55b2, 0xc3e5b4c4, 0xa6281e04, 0x3b27ff72,
+    0x4746daa9, 0xda493bdf, 0xea6fb345, 0x77605233, 0x0b0177e8,
+    0x960e969e, 0xf3c33c5e, 0x6eccdd28, 0x12adf8f3, 0x8fa21985,
+    0xd936ad73, 0x44394c05, 0x385869de, 0xa55788a8, 0xc09a2268,
+    0x5d95c31e, 0x21f4e6c5, 0xbcfb07b3, 0x8373efe2, 0x1e7c0e94,
+    0x621d2b4f, 0xff12ca39, 0x9adf60f9, 0x07d0818f, 0x7bb1a454,
+    0xe6be4522, 0xb02af1d4, 0x2d2510a2, 0x51443579, 0xcc4bd40f,
+    0xa9867ecf, 0x34899fb9, 0x48e8ba62, 0xd5e75b14, 0xe5c1d38e,
+    0x78ce32f8, 0x04af1723, 0x99a0f655, 0xfc6d5c95, 0x6162bde3,
+    0x1d039838, 0x800c794e, 0xd698cdb8, 0x4b972cce, 0x37f60915,
+    0xaaf9e863, 0xcf3442a3, 0x523ba3d5, 0x2e5a860e, 0xb3556778,
+    0x4e17973a, 0xd318764c, 0xaf795397, 0x3276b2e1, 0x57bb1821,
+    0xcab4f957, 0xb6d5dc8c, 0x2bda3dfa, 0x7d4e890c, 0xe041687a,
+    0x9c204da1, 0x012facd7, 0x64e20617, 0xf9ede761, 0x858cc2ba,
+    0x188323cc, 0x28a5ab56, 0xb5aa4a20, 0xc9cb6ffb, 0x54c48e8d,
+    0x3109244d, 0xac06c53b, 0xd067e0e0, 0x4d680196, 0x1bfcb560,
+    0x86f35416, 0xfa9271cd, 0x679d90bb, 0x02503a7b, 0x9f5fdb0d,
+    0xe33efed6, 0x7e311fa0, 0xc2ca1813, 0x5fc5f965, 0x23a4dcbe,
+    0xbeab3dc8, 0xdb669708, 0x4669767e, 0x3a0853a5, 0xa707b2d3,
+    0xf1930625, 0x6c9ce753, 0x10fdc288, 0x8df223fe, 0xe83f893e,
+    0x75306848, 0x09514d93, 0x945eace5, 0xa478247f, 0x3977c509,
+    0x4516e0d2, 0xd81901a4, 0xbdd4ab64, 0x20db4a12, 0x5cba6fc9,
+    0xc1b58ebf, 0x97213a49, 0x0a2edb3f, 0x764ffee4, 0xeb401f92,
+    0x8e8db552, 0x13825424, 0x6fe371ff, 0xf2ec9089, 0x0fae60cb,
+    0x92a181bd, 0xeec0a466, 0x73cf4510, 0x1602efd0, 0x8b0d0ea6,
+    0xf76c2b7d, 0x6a63ca0b, 0x3cf77efd, 0xa1f89f8b, 0xdd99ba50,
+    0x40965b26, 0x255bf1e6, 0xb8541090, 0xc435354b, 0x593ad43d,
+    0x691c5ca7, 0xf413bdd1, 0x8872980a, 0x157d797c, 0x70b0d3bc,
+    0xedbf32ca, 0x91de1711, 0x0cd1f667, 0x5a454291, 0xc74aa3e7,
+    0xbb2b863c, 0x2624674a, 0x43e9cd8a, 0xdee62cfc, 0xa2870927,
+    0x3f88e851},
+   {0x00000000, 0xdd96d985, 0x605cb54b, 0xbdca6cce, 0xc0b96a96,
+    0x1d2fb313, 0xa0e5dfdd, 0x7d730658, 0x5a03d36d, 0x87950ae8,
+    0x3a5f6626, 0xe7c9bfa3, 0x9abab9fb, 0x472c607e, 0xfae60cb0,
+    0x2770d535, 0xb407a6da, 0x69917f5f, 0xd45b1391, 0x09cdca14,
+    0x74becc4c, 0xa92815c9, 0x14e27907, 0xc974a082, 0xee0475b7,
+    0x3392ac32, 0x8e58c0fc, 0x53ce1979, 0x2ebd1f21, 0xf32bc6a4,
+    0x4ee1aa6a, 0x937773ef, 0xb37e4bf5, 0x6ee89270, 0xd322febe,
+    0x0eb4273b, 0x73c72163, 0xae51f8e6, 0x139b9428, 0xce0d4dad,
+    0xe97d9898, 0x34eb411d, 0x89212dd3, 0x54b7f456, 0x29c4f20e,
+    0xf4522b8b, 0x49984745, 0x940e9ec0, 0x0779ed2f, 0xdaef34aa,
+    0x67255864, 0xbab381e1, 0xc7c087b9, 0x1a565e3c, 0xa79c32f2,
+    0x7a0aeb77, 0x5d7a3e42, 0x80ece7c7, 0x3d268b09, 0xe0b0528c,
+    0x9dc354d4, 0x40558d51, 0xfd9fe19f, 0x2009381a, 0xbd8d91ab,
+    0x601b482e, 0xddd124e0, 0x0047fd65, 0x7d34fb3d, 0xa0a222b8,
+    0x1d684e76, 0xc0fe97f3, 0xe78e42c6, 0x3a189b43, 0x87d2f78d,
+    0x5a442e08, 0x27372850, 0xfaa1f1d5, 0x476b9d1b, 0x9afd449e,
+    0x098a3771, 0xd41ceef4, 0x69d6823a, 0xb4405bbf, 0xc9335de7,
+    0x14a58462, 0xa96fe8ac, 0x74f93129, 0x5389e41c, 0x8e1f3d99,
+    0x33d55157, 0xee4388d2, 0x93308e8a, 0x4ea6570f, 0xf36c3bc1,
+    0x2efae244, 0x0ef3da5e, 0xd36503db, 0x6eaf6f15, 0xb339b690,
+    0xce4ab0c8, 0x13dc694d, 0xae160583, 0x7380dc06, 0x54f00933,
+    0x8966d0b6, 0x34acbc78, 0xe93a65fd, 0x944963a5, 0x49dfba20,
+    0xf415d6ee, 0x29830f6b, 0xbaf47c84, 0x6762a501, 0xdaa8c9cf,
+    0x073e104a, 0x7a4d1612, 0xa7dbcf97, 0x1a11a359, 0xc7877adc,
+    0xe0f7afe9, 0x3d61766c, 0x80ab1aa2, 0x5d3dc327, 0x204ec57f,
+    0xfdd81cfa, 0x40127034, 0x9d84a9b1, 0xa06a2517, 0x7dfcfc92,
+    0xc036905c, 0x1da049d9, 0x60d34f81, 0xbd459604, 0x008ffaca,
+    0xdd19234f, 0xfa69f67a, 0x27ff2fff, 0x9a354331, 0x47a39ab4,
+    0x3ad09cec, 0xe7464569, 0x5a8c29a7, 0x871af022, 0x146d83cd,
+    0xc9fb5a48, 0x74313686, 0xa9a7ef03, 0xd4d4e95b, 0x094230de,
+    0xb4885c10, 0x691e8595, 0x4e6e50a0, 0x93f88925, 0x2e32e5eb,
+    0xf3a43c6e, 0x8ed73a36, 0x5341e3b3, 0xee8b8f7d, 0x331d56f8,
+    0x13146ee2, 0xce82b767, 0x7348dba9, 0xaede022c, 0xd3ad0474,
+    0x0e3bddf1, 0xb3f1b13f, 0x6e6768ba, 0x4917bd8f, 0x9481640a,
+    0x294b08c4, 0xf4ddd141, 0x89aed719, 0x54380e9c, 0xe9f26252,
+    0x3464bbd7, 0xa713c838, 0x7a8511bd, 0xc74f7d73, 0x1ad9a4f6,
+    0x67aaa2ae, 0xba3c7b2b, 0x07f617e5, 0xda60ce60, 0xfd101b55,
+    0x2086c2d0, 0x9d4cae1e, 0x40da779b, 0x3da971c3, 0xe03fa846,
+    0x5df5c488, 0x80631d0d, 0x1de7b4bc, 0xc0716d39, 0x7dbb01f7,
+    0xa02dd872, 0xdd5ede2a, 0x00c807af, 0xbd026b61, 0x6094b2e4,
+    0x47e467d1, 0x9a72be54, 0x27b8d29a, 0xfa2e0b1f, 0x875d0d47,
+    0x5acbd4c2, 0xe701b80c, 0x3a976189, 0xa9e01266, 0x7476cbe3,
+    0xc9bca72d, 0x142a7ea8, 0x695978f0, 0xb4cfa175, 0x0905cdbb,
+    0xd493143e, 0xf3e3c10b, 0x2e75188e, 0x93bf7440, 0x4e29adc5,
+    0x335aab9d, 0xeecc7218, 0x53061ed6, 0x8e90c753, 0xae99ff49,
+    0x730f26cc, 0xcec54a02, 0x13539387, 0x6e2095df, 0xb3b64c5a,
+    0x0e7c2094, 0xd3eaf911, 0xf49a2c24, 0x290cf5a1, 0x94c6996f,
+    0x495040ea, 0x342346b2, 0xe9b59f37, 0x547ff3f9, 0x89e92a7c,
+    0x1a9e5993, 0xc7088016, 0x7ac2ecd8, 0xa754355d, 0xda273305,
+    0x07b1ea80, 0xba7b864e, 0x67ed5fcb, 0x409d8afe, 0x9d0b537b,
+    0x20c13fb5, 0xfd57e630, 0x8024e068, 0x5db239ed, 0xe0785523,
+    0x3dee8ca6}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x00000000, 0x85d996dd, 0x4bb55c60, 0xce6ccabd, 0x966ab9c0,
+    0x13b32f1d, 0xdddfe5a0, 0x5806737d, 0x6dd3035a, 0xe80a9587,
+    0x26665f3a, 0xa3bfc9e7, 0xfbb9ba9a, 0x7e602c47, 0xb00ce6fa,
+    0x35d57027, 0xdaa607b4, 0x5f7f9169, 0x91135bd4, 0x14cacd09,
+    0x4cccbe74, 0xc91528a9, 0x0779e214, 0x82a074c9, 0xb77504ee,
+    0x32ac9233, 0xfcc0588e, 0x7919ce53, 0x211fbd2e, 0xa4c62bf3,
+    0x6aaae14e, 0xef737793, 0xf54b7eb3, 0x7092e86e, 0xbefe22d3,
+    0x3b27b40e, 0x6321c773, 0xe6f851ae, 0x28949b13, 0xad4d0dce,
+    0x98987de9, 0x1d41eb34, 0xd32d2189, 0x56f4b754, 0x0ef2c429,
+    0x8b2b52f4, 0x45479849, 0xc09e0e94, 0x2fed7907, 0xaa34efda,
+    0x64582567, 0xe181b3ba, 0xb987c0c7, 0x3c5e561a, 0xf2329ca7,
+    0x77eb0a7a, 0x423e7a5d, 0xc7e7ec80, 0x098b263d, 0x8c52b0e0,
+    0xd454c39d, 0x518d5540, 0x9fe19ffd, 0x1a380920, 0xab918dbd,
+    0x2e481b60, 0xe024d1dd, 0x65fd4700, 0x3dfb347d, 0xb822a2a0,
+    0x764e681d, 0xf397fec0, 0xc6428ee7, 0x439b183a, 0x8df7d287,
+    0x082e445a, 0x50283727, 0xd5f1a1fa, 0x1b9d6b47, 0x9e44fd9a,
+    0x71378a09, 0xf4ee1cd4, 0x3a82d669, 0xbf5b40b4, 0xe75d33c9,
+    0x6284a514, 0xace86fa9, 0x2931f974, 0x1ce48953, 0x993d1f8e,
+    0x5751d533, 0xd28843ee, 0x8a8e3093, 0x0f57a64e, 0xc13b6cf3,
+    0x44e2fa2e, 0x5edaf30e, 0xdb0365d3, 0x156faf6e, 0x90b639b3,
+    0xc8b04ace, 0x4d69dc13, 0x830516ae, 0x06dc8073, 0x3309f054,
+    0xb6d06689, 0x78bcac34, 0xfd653ae9, 0xa5634994, 0x20badf49,
+    0xeed615f4, 0x6b0f8329, 0x847cf4ba, 0x01a56267, 0xcfc9a8da,
+    0x4a103e07, 0x12164d7a, 0x97cfdba7, 0x59a3111a, 0xdc7a87c7,
+    0xe9aff7e0, 0x6c76613d, 0xa21aab80, 0x27c33d5d, 0x7fc54e20,
+    0xfa1cd8fd, 0x34701240, 0xb1a9849d, 0x17256aa0, 0x92fcfc7d,
+    0x5c9036c0, 0xd949a01d, 0x814fd360, 0x049645bd, 0xcafa8f00,
+    0x4f2319dd, 0x7af669fa, 0xff2fff27, 0x3143359a, 0xb49aa347,
+    0xec9cd03a, 0x694546e7, 0xa7298c5a, 0x22f01a87, 0xcd836d14,
+    0x485afbc9, 0x86363174, 0x03efa7a9, 0x5be9d4d4, 0xde304209,
+    0x105c88b4, 0x95851e69, 0xa0506e4e, 0x2589f893, 0xebe5322e,
+    0x6e3ca4f3, 0x363ad78e, 0xb3e34153, 0x7d8f8bee, 0xf8561d33,
+    0xe26e1413, 0x67b782ce, 0xa9db4873, 0x2c02deae, 0x7404add3,
+    0xf1dd3b0e, 0x3fb1f1b3, 0xba68676e, 0x8fbd1749, 0x0a648194,
+    0xc4084b29, 0x41d1ddf4, 0x19d7ae89, 0x9c0e3854, 0x5262f2e9,
+    0xd7bb6434, 0x38c813a7, 0xbd11857a, 0x737d4fc7, 0xf6a4d91a,
+    0xaea2aa67, 0x2b7b3cba, 0xe517f607, 0x60ce60da, 0x551b10fd,
+    0xd0c28620, 0x1eae4c9d, 0x9b77da40, 0xc371a93d, 0x46a83fe0,
+    0x88c4f55d, 0x0d1d6380, 0xbcb4e71d, 0x396d71c0, 0xf701bb7d,
+    0x72d82da0, 0x2ade5edd, 0xaf07c800, 0x616b02bd, 0xe4b29460,
+    0xd167e447, 0x54be729a, 0x9ad2b827, 0x1f0b2efa, 0x470d5d87,
+    0xc2d4cb5a, 0x0cb801e7, 0x8961973a, 0x6612e0a9, 0xe3cb7674,
+    0x2da7bcc9, 0xa87e2a14, 0xf0785969, 0x75a1cfb4, 0xbbcd0509,
+    0x3e1493d4, 0x0bc1e3f3, 0x8e18752e, 0x4074bf93, 0xc5ad294e,
+    0x9dab5a33, 0x1872ccee, 0xd61e0653, 0x53c7908e, 0x49ff99ae,
+    0xcc260f73, 0x024ac5ce, 0x87935313, 0xdf95206e, 0x5a4cb6b3,
+    0x94207c0e, 0x11f9ead3, 0x242c9af4, 0xa1f50c29, 0x6f99c694,
+    0xea405049, 0xb2462334, 0x379fb5e9, 0xf9f37f54, 0x7c2ae989,
+    0x93599e1a, 0x168008c7, 0xd8ecc27a, 0x5d3554a7, 0x053327da,
+    0x80eab107, 0x4e867bba, 0xcb5fed67, 0xfe8a9d40, 0x7b530b9d,
+    0xb53fc120, 0x30e657fd, 0x68e02480, 0xed39b25d, 0x235578e0,
+    0xa68cee3d},
+   {0x00000000, 0x76e10f9d, 0xadc46ee1, 0xdb25617c, 0x1b8fac19,
+    0x6d6ea384, 0xb64bc2f8, 0xc0aacd65, 0x361e5933, 0x40ff56ae,
+    0x9bda37d2, 0xed3b384f, 0x2d91f52a, 0x5b70fab7, 0x80559bcb,
+    0xf6b49456, 0x6c3cb266, 0x1addbdfb, 0xc1f8dc87, 0xb719d31a,
+    0x77b31e7f, 0x015211e2, 0xda77709e, 0xac967f03, 0x5a22eb55,
+    0x2cc3e4c8, 0xf7e685b4, 0x81078a29, 0x41ad474c, 0x374c48d1,
+    0xec6929ad, 0x9a882630, 0xd87864cd, 0xae996b50, 0x75bc0a2c,
+    0x035d05b1, 0xc3f7c8d4, 0xb516c749, 0x6e33a635, 0x18d2a9a8,
+    0xee663dfe, 0x98873263, 0x43a2531f, 0x35435c82, 0xf5e991e7,
+    0x83089e7a, 0x582dff06, 0x2eccf09b, 0xb444d6ab, 0xc2a5d936,
+    0x1980b84a, 0x6f61b7d7, 0xafcb7ab2, 0xd92a752f, 0x020f1453,
+    0x74ee1bce, 0x825a8f98, 0xf4bb8005, 0x2f9ee179, 0x597feee4,
+    0x99d52381, 0xef342c1c, 0x34114d60, 0x42f042fd, 0xf1f7b941,
+    0x8716b6dc, 0x5c33d7a0, 0x2ad2d83d, 0xea781558, 0x9c991ac5,
+    0x47bc7bb9, 0x315d7424, 0xc7e9e072, 0xb108efef, 0x6a2d8e93,
+    0x1ccc810e, 0xdc664c6b, 0xaa8743f6, 0x71a2228a, 0x07432d17,
+    0x9dcb0b27, 0xeb2a04ba, 0x300f65c6, 0x46ee6a5b, 0x8644a73e,
+    0xf0a5a8a3, 0x2b80c9df, 0x5d61c642, 0xabd55214, 0xdd345d89,
+    0x06113cf5, 0x70f03368, 0xb05afe0d, 0xc6bbf190, 0x1d9e90ec,
+    0x6b7f9f71, 0x298fdd8c, 0x5f6ed211, 0x844bb36d, 0xf2aabcf0,
+    0x32007195, 0x44e17e08, 0x9fc41f74, 0xe92510e9, 0x1f9184bf,
+    0x69708b22, 0xb255ea5e, 0xc4b4e5c3, 0x041e28a6, 0x72ff273b,
+    0xa9da4647, 0xdf3b49da, 0x45b36fea, 0x33526077, 0xe877010b,
+    0x9e960e96, 0x5e3cc3f3, 0x28ddcc6e, 0xf3f8ad12, 0x8519a28f,
+    0x73ad36d9, 0x054c3944, 0xde695838, 0xa88857a5, 0x68229ac0,
+    0x1ec3955d, 0xc5e6f421, 0xb307fbbc, 0xe2ef7383, 0x940e7c1e,
+    0x4f2b1d62, 0x39ca12ff, 0xf960df9a, 0x8f81d007, 0x54a4b17b,
+    0x2245bee6, 0xd4f12ab0, 0xa210252d, 0x79354451, 0x0fd44bcc,
+    0xcf7e86a9, 0xb99f8934, 0x62bae848, 0x145be7d5, 0x8ed3c1e5,
+    0xf832ce78, 0x2317af04, 0x55f6a099, 0x955c6dfc, 0xe3bd6261,
+    0x3898031d, 0x4e790c80, 0xb8cd98d6, 0xce2c974b, 0x1509f637,
+    0x63e8f9aa, 0xa34234cf, 0xd5a33b52, 0x0e865a2e, 0x786755b3,
+    0x3a97174e, 0x4c7618d3, 0x975379af, 0xe1b27632, 0x2118bb57,
+    0x57f9b4ca, 0x8cdcd5b6, 0xfa3dda2b, 0x0c894e7d, 0x7a6841e0,
+    0xa14d209c, 0xd7ac2f01, 0x1706e264, 0x61e7edf9, 0xbac28c85,
+    0xcc238318, 0x56aba528, 0x204aaab5, 0xfb6fcbc9, 0x8d8ec454,
+    0x4d240931, 0x3bc506ac, 0xe0e067d0, 0x9601684d, 0x60b5fc1b,
+    0x1654f386, 0xcd7192fa, 0xbb909d67, 0x7b3a5002, 0x0ddb5f9f,
+    0xd6fe3ee3, 0xa01f317e, 0x1318cac2, 0x65f9c55f, 0xbedca423,
+    0xc83dabbe, 0x089766db, 0x7e766946, 0xa553083a, 0xd3b207a7,
+    0x250693f1, 0x53e79c6c, 0x88c2fd10, 0xfe23f28d, 0x3e893fe8,
+    0x48683075, 0x934d5109, 0xe5ac5e94, 0x7f2478a4, 0x09c57739,
+    0xd2e01645, 0xa40119d8, 0x64abd4bd, 0x124adb20, 0xc96fba5c,
+    0xbf8eb5c1, 0x493a2197, 0x3fdb2e0a, 0xe4fe4f76, 0x921f40eb,
+    0x52b58d8e, 0x24548213, 0xff71e36f, 0x8990ecf2, 0xcb60ae0f,
+    0xbd81a192, 0x66a4c0ee, 0x1045cf73, 0xd0ef0216, 0xa60e0d8b,
+    0x7d2b6cf7, 0x0bca636a, 0xfd7ef73c, 0x8b9ff8a1, 0x50ba99dd,
+    0x265b9640, 0xe6f15b25, 0x901054b8, 0x4b3535c4, 0x3dd43a59,
+    0xa75c1c69, 0xd1bd13f4, 0x0a987288, 0x7c797d15, 0xbcd3b070,
+    0xca32bfed, 0x1117de91, 0x67f6d10c, 0x9142455a, 0xe7a34ac7,
+    0x3c862bbb, 0x4a672426, 0x8acde943, 0xfc2ce6de, 0x270987a2,
+    0x51e8883f},
+   {0x00000000, 0xe8dbfbb9, 0x91b186a8, 0x796a7d11, 0x63657c8a,
+    0x8bbe8733, 0xf2d4fa22, 0x1a0f019b, 0x87cc89cf, 0x6f177276,
+    0x167d0f67, 0xfea6f4de, 0xe4a9f545, 0x0c720efc, 0x751873ed,
+    0x9dc38854, 0x4f9f6244, 0xa74499fd, 0xde2ee4ec, 0x36f51f55,
+    0x2cfa1ece, 0xc421e577, 0xbd4b9866, 0x559063df, 0xc853eb8b,
+    0x20881032, 0x59e26d23, 0xb139969a, 0xab369701, 0x43ed6cb8,
+    0x3a8711a9, 0xd25cea10, 0x9e3ec588, 0x76e53e31, 0x0f8f4320,
+    0xe754b899, 0xfd5bb902, 0x158042bb, 0x6cea3faa, 0x8431c413,
+    0x19f24c47, 0xf129b7fe, 0x8843caef, 0x60983156, 0x7a9730cd,
+    0x924ccb74, 0xeb26b665, 0x03fd4ddc, 0xd1a1a7cc, 0x397a5c75,
+    0x40102164, 0xa8cbdadd, 0xb2c4db46, 0x5a1f20ff, 0x23755dee,
+    0xcbaea657, 0x566d2e03, 0xbeb6d5ba, 0xc7dca8ab, 0x2f075312,
+    0x35085289, 0xddd3a930, 0xa4b9d421, 0x4c622f98, 0x7d7bfbca,
+    0x95a00073, 0xecca7d62, 0x041186db, 0x1e1e8740, 0xf6c57cf9,
+    0x8faf01e8, 0x6774fa51, 0xfab77205, 0x126c89bc, 0x6b06f4ad,
+    0x83dd0f14, 0x99d20e8f, 0x7109f536, 0x08638827, 0xe0b8739e,
+    0x32e4998e, 0xda3f6237, 0xa3551f26, 0x4b8ee49f, 0x5181e504,
+    0xb95a1ebd, 0xc03063ac, 0x28eb9815, 0xb5281041, 0x5df3ebf8,
+    0x249996e9, 0xcc426d50, 0xd64d6ccb, 0x3e969772, 0x47fcea63,
+    0xaf2711da, 0xe3453e42, 0x0b9ec5fb, 0x72f4b8ea, 0x9a2f4353,
+    0x802042c8, 0x68fbb971, 0x1191c460, 0xf94a3fd9, 0x6489b78d,
+    0x8c524c34, 0xf5383125, 0x1de3ca9c, 0x07eccb07, 0xef3730be,
+    0x965d4daf, 0x7e86b616, 0xacda5c06, 0x4401a7bf, 0x3d6bdaae,
+    0xd5b02117, 0xcfbf208c, 0x2764db35, 0x5e0ea624, 0xb6d55d9d,
+    0x2b16d5c9, 0xc3cd2e70, 0xbaa75361, 0x527ca8d8, 0x4873a943,
+    0xa0a852fa, 0xd9c22feb, 0x3119d452, 0xbbf0874e, 0x532b7cf7,
+    0x2a4101e6, 0xc29afa5f, 0xd895fbc4, 0x304e007d, 0x49247d6c,
+    0xa1ff86d5, 0x3c3c0e81, 0xd4e7f538, 0xad8d8829, 0x45567390,
+    0x5f59720b, 0xb78289b2, 0xcee8f4a3, 0x26330f1a, 0xf46fe50a,
+    0x1cb41eb3, 0x65de63a2, 0x8d05981b, 0x970a9980, 0x7fd16239,
+    0x06bb1f28, 0xee60e491, 0x73a36cc5, 0x9b78977c, 0xe212ea6d,
+    0x0ac911d4, 0x10c6104f, 0xf81debf6, 0x817796e7, 0x69ac6d5e,
+    0x25ce42c6, 0xcd15b97f, 0xb47fc46e, 0x5ca43fd7, 0x46ab3e4c,
+    0xae70c5f5, 0xd71ab8e4, 0x3fc1435d, 0xa202cb09, 0x4ad930b0,
+    0x33b34da1, 0xdb68b618, 0xc167b783, 0x29bc4c3a, 0x50d6312b,
+    0xb80dca92, 0x6a512082, 0x828adb3b, 0xfbe0a62a, 0x133b5d93,
+    0x09345c08, 0xe1efa7b1, 0x9885daa0, 0x705e2119, 0xed9da94d,
+    0x054652f4, 0x7c2c2fe5, 0x94f7d45c, 0x8ef8d5c7, 0x66232e7e,
+    0x1f49536f, 0xf792a8d6, 0xc68b7c84, 0x2e50873d, 0x573afa2c,
+    0xbfe10195, 0xa5ee000e, 0x4d35fbb7, 0x345f86a6, 0xdc847d1f,
+    0x4147f54b, 0xa99c0ef2, 0xd0f673e3, 0x382d885a, 0x222289c1,
+    0xcaf97278, 0xb3930f69, 0x5b48f4d0, 0x89141ec0, 0x61cfe579,
+    0x18a59868, 0xf07e63d1, 0xea71624a, 0x02aa99f3, 0x7bc0e4e2,
+    0x931b1f5b, 0x0ed8970f, 0xe6036cb6, 0x9f6911a7, 0x77b2ea1e,
+    0x6dbdeb85, 0x8566103c, 0xfc0c6d2d, 0x14d79694, 0x58b5b90c,
+    0xb06e42b5, 0xc9043fa4, 0x21dfc41d, 0x3bd0c586, 0xd30b3e3f,
+    0xaa61432e, 0x42bab897, 0xdf7930c3, 0x37a2cb7a, 0x4ec8b66b,
+    0xa6134dd2, 0xbc1c4c49, 0x54c7b7f0, 0x2dadcae1, 0xc5763158,
+    0x172adb48, 0xfff120f1, 0x869b5de0, 0x6e40a659, 0x744fa7c2,
+    0x9c945c7b, 0xe5fe216a, 0x0d25dad3, 0x90e65287, 0x783da93e,
+    0x0157d42f, 0xe98c2f96, 0xf3832e0d, 0x1b58d5b4, 0x6232a8a5,
+    0x8ae9531c},
+   {0x00000000, 0x919168ae, 0x6325a087, 0xf2b4c829, 0x874c31d4,
+    0x16dd597a, 0xe4699153, 0x75f8f9fd, 0x4f9f1373, 0xde0e7bdd,
+    0x2cbab3f4, 0xbd2bdb5a, 0xc8d322a7, 0x59424a09, 0xabf68220,
+    0x3a67ea8e, 0x9e3e27e6, 0x0faf4f48, 0xfd1b8761, 0x6c8aefcf,
+    0x19721632, 0x88e37e9c, 0x7a57b6b5, 0xebc6de1b, 0xd1a13495,
+    0x40305c3b, 0xb2849412, 0x2315fcbc, 0x56ed0541, 0xc77c6def,
+    0x35c8a5c6, 0xa459cd68, 0x7d7b3f17, 0xecea57b9, 0x1e5e9f90,
+    0x8fcff73e, 0xfa370ec3, 0x6ba6666d, 0x9912ae44, 0x0883c6ea,
+    0x32e42c64, 0xa37544ca, 0x51c18ce3, 0xc050e44d, 0xb5a81db0,
+    0x2439751e, 0xd68dbd37, 0x471cd599, 0xe34518f1, 0x72d4705f,
+    0x8060b876, 0x11f1d0d8, 0x64092925, 0xf598418b, 0x072c89a2,
+    0x96bde10c, 0xacda0b82, 0x3d4b632c, 0xcfffab05, 0x5e6ec3ab,
+    0x2b963a56, 0xba0752f8, 0x48b39ad1, 0xd922f27f, 0xfaf67e2e,
+    0x6b671680, 0x99d3dea9, 0x0842b607, 0x7dba4ffa, 0xec2b2754,
+    0x1e9fef7d, 0x8f0e87d3, 0xb5696d5d, 0x24f805f3, 0xd64ccdda,
+    0x47dda574, 0x32255c89, 0xa3b43427, 0x5100fc0e, 0xc09194a0,
+    0x64c859c8, 0xf5593166, 0x07edf94f, 0x967c91e1, 0xe384681c,
+    0x721500b2, 0x80a1c89b, 0x1130a035, 0x2b574abb, 0xbac62215,
+    0x4872ea3c, 0xd9e38292, 0xac1b7b6f, 0x3d8a13c1, 0xcf3edbe8,
+    0x5eafb346, 0x878d4139, 0x161c2997, 0xe4a8e1be, 0x75398910,
+    0x00c170ed, 0x91501843, 0x63e4d06a, 0xf275b8c4, 0xc812524a,
+    0x59833ae4, 0xab37f2cd, 0x3aa69a63, 0x4f5e639e, 0xdecf0b30,
+    0x2c7bc319, 0xbdeaabb7, 0x19b366df, 0x88220e71, 0x7a96c658,
+    0xeb07aef6, 0x9eff570b, 0x0f6e3fa5, 0xfddaf78c, 0x6c4b9f22,
+    0x562c75ac, 0xc7bd1d02, 0x3509d52b, 0xa498bd85, 0xd1604478,
+    0x40f12cd6, 0xb245e4ff, 0x23d48c51, 0xf4edfd5c, 0x657c95f2,
+    0x97c85ddb, 0x06593575, 0x73a1cc88, 0xe230a426, 0x10846c0f,
+    0x811504a1, 0xbb72ee2f, 0x2ae38681, 0xd8574ea8, 0x49c62606,
+    0x3c3edffb, 0xadafb755, 0x5f1b7f7c, 0xce8a17d2, 0x6ad3daba,
+    0xfb42b214, 0x09f67a3d, 0x98671293, 0xed9feb6e, 0x7c0e83c0,
+    0x8eba4be9, 0x1f2b2347, 0x254cc9c9, 0xb4dda167, 0x4669694e,
+    0xd7f801e0, 0xa200f81d, 0x339190b3, 0xc125589a, 0x50b43034,
+    0x8996c24b, 0x1807aae5, 0xeab362cc, 0x7b220a62, 0x0edaf39f,
+    0x9f4b9b31, 0x6dff5318, 0xfc6e3bb6, 0xc609d138, 0x5798b996,
+    0xa52c71bf, 0x34bd1911, 0x4145e0ec, 0xd0d48842, 0x2260406b,
+    0xb3f128c5, 0x17a8e5ad, 0x86398d03, 0x748d452a, 0xe51c2d84,
+    0x90e4d479, 0x0175bcd7, 0xf3c174fe, 0x62501c50, 0x5837f6de,
+    0xc9a69e70, 0x3b125659, 0xaa833ef7, 0xdf7bc70a, 0x4eeaafa4,
+    0xbc5e678d, 0x2dcf0f23, 0x0e1b8372, 0x9f8aebdc, 0x6d3e23f5,
+    0xfcaf4b5b, 0x8957b2a6, 0x18c6da08, 0xea721221, 0x7be37a8f,
+    0x41849001, 0xd015f8af, 0x22a13086, 0xb3305828, 0xc6c8a1d5,
+    0x5759c97b, 0xa5ed0152, 0x347c69fc, 0x9025a494, 0x01b4cc3a,
+    0xf3000413, 0x62916cbd, 0x17699540, 0x86f8fdee, 0x744c35c7,
+    0xe5dd5d69, 0xdfbab7e7, 0x4e2bdf49, 0xbc9f1760, 0x2d0e7fce,
+    0x58f68633, 0xc967ee9d, 0x3bd326b4, 0xaa424e1a, 0x7360bc65,
+    0xe2f1d4cb, 0x10451ce2, 0x81d4744c, 0xf42c8db1, 0x65bde51f,
+    0x97092d36, 0x06984598, 0x3cffaf16, 0xad6ec7b8, 0x5fda0f91,
+    0xce4b673f, 0xbbb39ec2, 0x2a22f66c, 0xd8963e45, 0x490756eb,
+    0xed5e9b83, 0x7ccff32d, 0x8e7b3b04, 0x1fea53aa, 0x6a12aa57,
+    0xfb83c2f9, 0x09370ad0, 0x98a6627e, 0xa2c188f0, 0x3350e05e,
+    0xc1e42877, 0x507540d9, 0x258db924, 0xb41cd18a, 0x46a819a3,
+    0xd739710d}};
+
+#endif
+
+#endif
+
+#if N == 5
+
+#if W == 8
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0xaf449247, 0x85f822cf, 0x2abcb088, 0xd08143df,
+    0x7fc5d198, 0x55796110, 0xfa3df357, 0x7a7381ff, 0xd53713b8,
+    0xff8ba330, 0x50cf3177, 0xaaf2c220, 0x05b65067, 0x2f0ae0ef,
+    0x804e72a8, 0xf4e703fe, 0x5ba391b9, 0x711f2131, 0xde5bb376,
+    0x24664021, 0x8b22d266, 0xa19e62ee, 0x0edaf0a9, 0x8e948201,
+    0x21d01046, 0x0b6ca0ce, 0xa4283289, 0x5e15c1de, 0xf1515399,
+    0xdbede311, 0x74a97156, 0x32bf01bd, 0x9dfb93fa, 0xb7472372,
+    0x1803b135, 0xe23e4262, 0x4d7ad025, 0x67c660ad, 0xc882f2ea,
+    0x48cc8042, 0xe7881205, 0xcd34a28d, 0x627030ca, 0x984dc39d,
+    0x370951da, 0x1db5e152, 0xb2f17315, 0xc6580243, 0x691c9004,
+    0x43a0208c, 0xece4b2cb, 0x16d9419c, 0xb99dd3db, 0x93216353,
+    0x3c65f114, 0xbc2b83bc, 0x136f11fb, 0x39d3a173, 0x96973334,
+    0x6caac063, 0xc3ee5224, 0xe952e2ac, 0x461670eb, 0x657e037a,
+    0xca3a913d, 0xe08621b5, 0x4fc2b3f2, 0xb5ff40a5, 0x1abbd2e2,
+    0x3007626a, 0x9f43f02d, 0x1f0d8285, 0xb04910c2, 0x9af5a04a,
+    0x35b1320d, 0xcf8cc15a, 0x60c8531d, 0x4a74e395, 0xe53071d2,
+    0x91990084, 0x3edd92c3, 0x1461224b, 0xbb25b00c, 0x4118435b,
+    0xee5cd11c, 0xc4e06194, 0x6ba4f3d3, 0xebea817b, 0x44ae133c,
+    0x6e12a3b4, 0xc15631f3, 0x3b6bc2a4, 0x942f50e3, 0xbe93e06b,
+    0x11d7722c, 0x57c102c7, 0xf8859080, 0xd2392008, 0x7d7db24f,
+    0x87404118, 0x2804d35f, 0x02b863d7, 0xadfcf190, 0x2db28338,
+    0x82f6117f, 0xa84aa1f7, 0x070e33b0, 0xfd33c0e7, 0x527752a0,
+    0x78cbe228, 0xd78f706f, 0xa3260139, 0x0c62937e, 0x26de23f6,
+    0x899ab1b1, 0x73a742e6, 0xdce3d0a1, 0xf65f6029, 0x591bf26e,
+    0xd95580c6, 0x76111281, 0x5cada209, 0xf3e9304e, 0x09d4c319,
+    0xa690515e, 0x8c2ce1d6, 0x23687391, 0xcafc06f4, 0x65b894b3,
+    0x4f04243b, 0xe040b67c, 0x1a7d452b, 0xb539d76c, 0x9f8567e4,
+    0x30c1f5a3, 0xb08f870b, 0x1fcb154c, 0x3577a5c4, 0x9a333783,
+    0x600ec4d4, 0xcf4a5693, 0xe5f6e61b, 0x4ab2745c, 0x3e1b050a,
+    0x915f974d, 0xbbe327c5, 0x14a7b582, 0xee9a46d5, 0x41ded492,
+    0x6b62641a, 0xc426f65d, 0x446884f5, 0xeb2c16b2, 0xc190a63a,
+    0x6ed4347d, 0x94e9c72a, 0x3bad556d, 0x1111e5e5, 0xbe5577a2,
+    0xf8430749, 0x5707950e, 0x7dbb2586, 0xd2ffb7c1, 0x28c24496,
+    0x8786d6d1, 0xad3a6659, 0x027ef41e, 0x823086b6, 0x2d7414f1,
+    0x07c8a479, 0xa88c363e, 0x52b1c569, 0xfdf5572e, 0xd749e7a6,
+    0x780d75e1, 0x0ca404b7, 0xa3e096f0, 0x895c2678, 0x2618b43f,
+    0xdc254768, 0x7361d52f, 0x59dd65a7, 0xf699f7e0, 0x76d78548,
+    0xd993170f, 0xf32fa787, 0x5c6b35c0, 0xa656c697, 0x091254d0,
+    0x23aee458, 0x8cea761f, 0xaf82058e, 0x00c697c9, 0x2a7a2741,
+    0x853eb506, 0x7f034651, 0xd047d416, 0xfafb649e, 0x55bff6d9,
+    0xd5f18471, 0x7ab51636, 0x5009a6be, 0xff4d34f9, 0x0570c7ae,
+    0xaa3455e9, 0x8088e561, 0x2fcc7726, 0x5b650670, 0xf4219437,
+    0xde9d24bf, 0x71d9b6f8, 0x8be445af, 0x24a0d7e8, 0x0e1c6760,
+    0xa158f527, 0x2116878f, 0x8e5215c8, 0xa4eea540, 0x0baa3707,
+    0xf197c450, 0x5ed35617, 0x746fe69f, 0xdb2b74d8, 0x9d3d0433,
+    0x32799674, 0x18c526fc, 0xb781b4bb, 0x4dbc47ec, 0xe2f8d5ab,
+    0xc8446523, 0x6700f764, 0xe74e85cc, 0x480a178b, 0x62b6a703,
+    0xcdf23544, 0x37cfc613, 0x988b5454, 0xb237e4dc, 0x1d73769b,
+    0x69da07cd, 0xc69e958a, 0xec222502, 0x4366b745, 0xb95b4412,
+    0x161fd655, 0x3ca366dd, 0x93e7f49a, 0x13a98632, 0xbced1475,
+    0x9651a4fd, 0x391536ba, 0xc328c5ed, 0x6c6c57aa, 0x46d0e722,
+    0xe9947565},
+   {0x00000000, 0x4e890ba9, 0x9d121752, 0xd39b1cfb, 0xe15528e5,
+    0xafdc234c, 0x7c473fb7, 0x32ce341e, 0x19db578b, 0x57525c22,
+    0x84c940d9, 0xca404b70, 0xf88e7f6e, 0xb60774c7, 0x659c683c,
+    0x2b156395, 0x33b6af16, 0x7d3fa4bf, 0xaea4b844, 0xe02db3ed,
+    0xd2e387f3, 0x9c6a8c5a, 0x4ff190a1, 0x01789b08, 0x2a6df89d,
+    0x64e4f334, 0xb77fefcf, 0xf9f6e466, 0xcb38d078, 0x85b1dbd1,
+    0x562ac72a, 0x18a3cc83, 0x676d5e2c, 0x29e45585, 0xfa7f497e,
+    0xb4f642d7, 0x863876c9, 0xc8b17d60, 0x1b2a619b, 0x55a36a32,
+    0x7eb609a7, 0x303f020e, 0xe3a41ef5, 0xad2d155c, 0x9fe32142,
+    0xd16a2aeb, 0x02f13610, 0x4c783db9, 0x54dbf13a, 0x1a52fa93,
+    0xc9c9e668, 0x8740edc1, 0xb58ed9df, 0xfb07d276, 0x289cce8d,
+    0x6615c524, 0x4d00a6b1, 0x0389ad18, 0xd012b1e3, 0x9e9bba4a,
+    0xac558e54, 0xe2dc85fd, 0x31479906, 0x7fce92af, 0xcedabc58,
+    0x8053b7f1, 0x53c8ab0a, 0x1d41a0a3, 0x2f8f94bd, 0x61069f14,
+    0xb29d83ef, 0xfc148846, 0xd701ebd3, 0x9988e07a, 0x4a13fc81,
+    0x049af728, 0x3654c336, 0x78ddc89f, 0xab46d464, 0xe5cfdfcd,
+    0xfd6c134e, 0xb3e518e7, 0x607e041c, 0x2ef70fb5, 0x1c393bab,
+    0x52b03002, 0x812b2cf9, 0xcfa22750, 0xe4b744c5, 0xaa3e4f6c,
+    0x79a55397, 0x372c583e, 0x05e26c20, 0x4b6b6789, 0x98f07b72,
+    0xd67970db, 0xa9b7e274, 0xe73ee9dd, 0x34a5f526, 0x7a2cfe8f,
+    0x48e2ca91, 0x066bc138, 0xd5f0ddc3, 0x9b79d66a, 0xb06cb5ff,
+    0xfee5be56, 0x2d7ea2ad, 0x63f7a904, 0x51399d1a, 0x1fb096b3,
+    0xcc2b8a48, 0x82a281e1, 0x9a014d62, 0xd48846cb, 0x07135a30,
+    0x499a5199, 0x7b546587, 0x35dd6e2e, 0xe64672d5, 0xa8cf797c,
+    0x83da1ae9, 0xcd531140, 0x1ec80dbb, 0x50410612, 0x628f320c,
+    0x2c0639a5, 0xff9d255e, 0xb1142ef7, 0x46c47ef1, 0x084d7558,
+    0xdbd669a3, 0x955f620a, 0xa7915614, 0xe9185dbd, 0x3a834146,
+    0x740a4aef, 0x5f1f297a, 0x119622d3, 0xc20d3e28, 0x8c843581,
+    0xbe4a019f, 0xf0c30a36, 0x235816cd, 0x6dd11d64, 0x7572d1e7,
+    0x3bfbda4e, 0xe860c6b5, 0xa6e9cd1c, 0x9427f902, 0xdaaef2ab,
+    0x0935ee50, 0x47bce5f9, 0x6ca9866c, 0x22208dc5, 0xf1bb913e,
+    0xbf329a97, 0x8dfcae89, 0xc375a520, 0x10eeb9db, 0x5e67b272,
+    0x21a920dd, 0x6f202b74, 0xbcbb378f, 0xf2323c26, 0xc0fc0838,
+    0x8e750391, 0x5dee1f6a, 0x136714c3, 0x38727756, 0x76fb7cff,
+    0xa5606004, 0xebe96bad, 0xd9275fb3, 0x97ae541a, 0x443548e1,
+    0x0abc4348, 0x121f8fcb, 0x5c968462, 0x8f0d9899, 0xc1849330,
+    0xf34aa72e, 0xbdc3ac87, 0x6e58b07c, 0x20d1bbd5, 0x0bc4d840,
+    0x454dd3e9, 0x96d6cf12, 0xd85fc4bb, 0xea91f0a5, 0xa418fb0c,
+    0x7783e7f7, 0x390aec5e, 0x881ec2a9, 0xc697c900, 0x150cd5fb,
+    0x5b85de52, 0x694bea4c, 0x27c2e1e5, 0xf459fd1e, 0xbad0f6b7,
+    0x91c59522, 0xdf4c9e8b, 0x0cd78270, 0x425e89d9, 0x7090bdc7,
+    0x3e19b66e, 0xed82aa95, 0xa30ba13c, 0xbba86dbf, 0xf5216616,
+    0x26ba7aed, 0x68337144, 0x5afd455a, 0x14744ef3, 0xc7ef5208,
+    0x896659a1, 0xa2733a34, 0xecfa319d, 0x3f612d66, 0x71e826cf,
+    0x432612d1, 0x0daf1978, 0xde340583, 0x90bd0e2a, 0xef739c85,
+    0xa1fa972c, 0x72618bd7, 0x3ce8807e, 0x0e26b460, 0x40afbfc9,
+    0x9334a332, 0xddbda89b, 0xf6a8cb0e, 0xb821c0a7, 0x6bbadc5c,
+    0x2533d7f5, 0x17fde3eb, 0x5974e842, 0x8aeff4b9, 0xc466ff10,
+    0xdcc53393, 0x924c383a, 0x41d724c1, 0x0f5e2f68, 0x3d901b76,
+    0x731910df, 0xa0820c24, 0xee0b078d, 0xc51e6418, 0x8b976fb1,
+    0x580c734a, 0x168578e3, 0x244b4cfd, 0x6ac24754, 0xb9595baf,
+    0xf7d05006},
+   {0x00000000, 0x8d88fde2, 0xc060fd85, 0x4de80067, 0x5bb0fd4b,
+    0xd63800a9, 0x9bd000ce, 0x1658fd2c, 0xb761fa96, 0x3ae90774,
+    0x77010713, 0xfa89faf1, 0xecd107dd, 0x6159fa3f, 0x2cb1fa58,
+    0xa13907ba, 0xb5b2f36d, 0x383a0e8f, 0x75d20ee8, 0xf85af30a,
+    0xee020e26, 0x638af3c4, 0x2e62f3a3, 0xa3ea0e41, 0x02d309fb,
+    0x8f5bf419, 0xc2b3f47e, 0x4f3b099c, 0x5963f4b0, 0xd4eb0952,
+    0x99030935, 0x148bf4d7, 0xb014e09b, 0x3d9c1d79, 0x70741d1e,
+    0xfdfce0fc, 0xeba41dd0, 0x662ce032, 0x2bc4e055, 0xa64c1db7,
+    0x07751a0d, 0x8afde7ef, 0xc715e788, 0x4a9d1a6a, 0x5cc5e746,
+    0xd14d1aa4, 0x9ca51ac3, 0x112de721, 0x05a613f6, 0x882eee14,
+    0xc5c6ee73, 0x484e1391, 0x5e16eebd, 0xd39e135f, 0x9e761338,
+    0x13feeeda, 0xb2c7e960, 0x3f4f1482, 0x72a714e5, 0xff2fe907,
+    0xe977142b, 0x64ffe9c9, 0x2917e9ae, 0xa49f144c, 0xbb58c777,
+    0x36d03a95, 0x7b383af2, 0xf6b0c710, 0xe0e83a3c, 0x6d60c7de,
+    0x2088c7b9, 0xad003a5b, 0x0c393de1, 0x81b1c003, 0xcc59c064,
+    0x41d13d86, 0x5789c0aa, 0xda013d48, 0x97e93d2f, 0x1a61c0cd,
+    0x0eea341a, 0x8362c9f8, 0xce8ac99f, 0x4302347d, 0x555ac951,
+    0xd8d234b3, 0x953a34d4, 0x18b2c936, 0xb98bce8c, 0x3403336e,
+    0x79eb3309, 0xf463ceeb, 0xe23b33c7, 0x6fb3ce25, 0x225bce42,
+    0xafd333a0, 0x0b4c27ec, 0x86c4da0e, 0xcb2cda69, 0x46a4278b,
+    0x50fcdaa7, 0xdd742745, 0x909c2722, 0x1d14dac0, 0xbc2ddd7a,
+    0x31a52098, 0x7c4d20ff, 0xf1c5dd1d, 0xe79d2031, 0x6a15ddd3,
+    0x27fdddb4, 0xaa752056, 0xbefed481, 0x33762963, 0x7e9e2904,
+    0xf316d4e6, 0xe54e29ca, 0x68c6d428, 0x252ed44f, 0xa8a629ad,
+    0x099f2e17, 0x8417d3f5, 0xc9ffd392, 0x44772e70, 0x522fd35c,
+    0xdfa72ebe, 0x924f2ed9, 0x1fc7d33b, 0xadc088af, 0x2048754d,
+    0x6da0752a, 0xe02888c8, 0xf67075e4, 0x7bf88806, 0x36108861,
+    0xbb987583, 0x1aa17239, 0x97298fdb, 0xdac18fbc, 0x5749725e,
+    0x41118f72, 0xcc997290, 0x817172f7, 0x0cf98f15, 0x18727bc2,
+    0x95fa8620, 0xd8128647, 0x559a7ba5, 0x43c28689, 0xce4a7b6b,
+    0x83a27b0c, 0x0e2a86ee, 0xaf138154, 0x229b7cb6, 0x6f737cd1,
+    0xe2fb8133, 0xf4a37c1f, 0x792b81fd, 0x34c3819a, 0xb94b7c78,
+    0x1dd46834, 0x905c95d6, 0xddb495b1, 0x503c6853, 0x4664957f,
+    0xcbec689d, 0x860468fa, 0x0b8c9518, 0xaab592a2, 0x273d6f40,
+    0x6ad56f27, 0xe75d92c5, 0xf1056fe9, 0x7c8d920b, 0x3165926c,
+    0xbced6f8e, 0xa8669b59, 0x25ee66bb, 0x680666dc, 0xe58e9b3e,
+    0xf3d66612, 0x7e5e9bf0, 0x33b69b97, 0xbe3e6675, 0x1f0761cf,
+    0x928f9c2d, 0xdf679c4a, 0x52ef61a8, 0x44b79c84, 0xc93f6166,
+    0x84d76101, 0x095f9ce3, 0x16984fd8, 0x9b10b23a, 0xd6f8b25d,
+    0x5b704fbf, 0x4d28b293, 0xc0a04f71, 0x8d484f16, 0x00c0b2f4,
+    0xa1f9b54e, 0x2c7148ac, 0x619948cb, 0xec11b529, 0xfa494805,
+    0x77c1b5e7, 0x3a29b580, 0xb7a14862, 0xa32abcb5, 0x2ea24157,
+    0x634a4130, 0xeec2bcd2, 0xf89a41fe, 0x7512bc1c, 0x38fabc7b,
+    0xb5724199, 0x144b4623, 0x99c3bbc1, 0xd42bbba6, 0x59a34644,
+    0x4ffbbb68, 0xc273468a, 0x8f9b46ed, 0x0213bb0f, 0xa68caf43,
+    0x2b0452a1, 0x66ec52c6, 0xeb64af24, 0xfd3c5208, 0x70b4afea,
+    0x3d5caf8d, 0xb0d4526f, 0x11ed55d5, 0x9c65a837, 0xd18da850,
+    0x5c0555b2, 0x4a5da89e, 0xc7d5557c, 0x8a3d551b, 0x07b5a8f9,
+    0x133e5c2e, 0x9eb6a1cc, 0xd35ea1ab, 0x5ed65c49, 0x488ea165,
+    0xc5065c87, 0x88ee5ce0, 0x0566a102, 0xa45fa6b8, 0x29d75b5a,
+    0x643f5b3d, 0xe9b7a6df, 0xffef5bf3, 0x7267a611, 0x3f8fa676,
+    0xb2075b94},
+   {0x00000000, 0x80f0171f, 0xda91287f, 0x5a613f60, 0x6e5356bf,
+    0xeea341a0, 0xb4c27ec0, 0x343269df, 0xdca6ad7e, 0x5c56ba61,
+    0x06378501, 0x86c7921e, 0xb2f5fbc1, 0x3205ecde, 0x6864d3be,
+    0xe894c4a1, 0x623c5cbd, 0xe2cc4ba2, 0xb8ad74c2, 0x385d63dd,
+    0x0c6f0a02, 0x8c9f1d1d, 0xd6fe227d, 0x560e3562, 0xbe9af1c3,
+    0x3e6ae6dc, 0x640bd9bc, 0xe4fbcea3, 0xd0c9a77c, 0x5039b063,
+    0x0a588f03, 0x8aa8981c, 0xc478b97a, 0x4488ae65, 0x1ee99105,
+    0x9e19861a, 0xaa2befc5, 0x2adbf8da, 0x70bac7ba, 0xf04ad0a5,
+    0x18de1404, 0x982e031b, 0xc24f3c7b, 0x42bf2b64, 0x768d42bb,
+    0xf67d55a4, 0xac1c6ac4, 0x2cec7ddb, 0xa644e5c7, 0x26b4f2d8,
+    0x7cd5cdb8, 0xfc25daa7, 0xc817b378, 0x48e7a467, 0x12869b07,
+    0x92768c18, 0x7ae248b9, 0xfa125fa6, 0xa07360c6, 0x208377d9,
+    0x14b11e06, 0x94410919, 0xce203679, 0x4ed02166, 0x538074b5,
+    0xd37063aa, 0x89115cca, 0x09e14bd5, 0x3dd3220a, 0xbd233515,
+    0xe7420a75, 0x67b21d6a, 0x8f26d9cb, 0x0fd6ced4, 0x55b7f1b4,
+    0xd547e6ab, 0xe1758f74, 0x6185986b, 0x3be4a70b, 0xbb14b014,
+    0x31bc2808, 0xb14c3f17, 0xeb2d0077, 0x6bdd1768, 0x5fef7eb7,
+    0xdf1f69a8, 0x857e56c8, 0x058e41d7, 0xed1a8576, 0x6dea9269,
+    0x378bad09, 0xb77bba16, 0x8349d3c9, 0x03b9c4d6, 0x59d8fbb6,
+    0xd928eca9, 0x97f8cdcf, 0x1708dad0, 0x4d69e5b0, 0xcd99f2af,
+    0xf9ab9b70, 0x795b8c6f, 0x233ab30f, 0xa3caa410, 0x4b5e60b1,
+    0xcbae77ae, 0x91cf48ce, 0x113f5fd1, 0x250d360e, 0xa5fd2111,
+    0xff9c1e71, 0x7f6c096e, 0xf5c49172, 0x7534866d, 0x2f55b90d,
+    0xafa5ae12, 0x9b97c7cd, 0x1b67d0d2, 0x4106efb2, 0xc1f6f8ad,
+    0x29623c0c, 0xa9922b13, 0xf3f31473, 0x7303036c, 0x47316ab3,
+    0xc7c17dac, 0x9da042cc, 0x1d5055d3, 0xa700e96a, 0x27f0fe75,
+    0x7d91c115, 0xfd61d60a, 0xc953bfd5, 0x49a3a8ca, 0x13c297aa,
+    0x933280b5, 0x7ba64414, 0xfb56530b, 0xa1376c6b, 0x21c77b74,
+    0x15f512ab, 0x950505b4, 0xcf643ad4, 0x4f942dcb, 0xc53cb5d7,
+    0x45cca2c8, 0x1fad9da8, 0x9f5d8ab7, 0xab6fe368, 0x2b9ff477,
+    0x71fecb17, 0xf10edc08, 0x199a18a9, 0x996a0fb6, 0xc30b30d6,
+    0x43fb27c9, 0x77c94e16, 0xf7395909, 0xad586669, 0x2da87176,
+    0x63785010, 0xe388470f, 0xb9e9786f, 0x39196f70, 0x0d2b06af,
+    0x8ddb11b0, 0xd7ba2ed0, 0x574a39cf, 0xbfdefd6e, 0x3f2eea71,
+    0x654fd511, 0xe5bfc20e, 0xd18dabd1, 0x517dbcce, 0x0b1c83ae,
+    0x8bec94b1, 0x01440cad, 0x81b41bb2, 0xdbd524d2, 0x5b2533cd,
+    0x6f175a12, 0xefe74d0d, 0xb586726d, 0x35766572, 0xdde2a1d3,
+    0x5d12b6cc, 0x077389ac, 0x87839eb3, 0xb3b1f76c, 0x3341e073,
+    0x6920df13, 0xe9d0c80c, 0xf4809ddf, 0x74708ac0, 0x2e11b5a0,
+    0xaee1a2bf, 0x9ad3cb60, 0x1a23dc7f, 0x4042e31f, 0xc0b2f400,
+    0x282630a1, 0xa8d627be, 0xf2b718de, 0x72470fc1, 0x4675661e,
+    0xc6857101, 0x9ce44e61, 0x1c14597e, 0x96bcc162, 0x164cd67d,
+    0x4c2de91d, 0xccddfe02, 0xf8ef97dd, 0x781f80c2, 0x227ebfa2,
+    0xa28ea8bd, 0x4a1a6c1c, 0xcaea7b03, 0x908b4463, 0x107b537c,
+    0x24493aa3, 0xa4b92dbc, 0xfed812dc, 0x7e2805c3, 0x30f824a5,
+    0xb00833ba, 0xea690cda, 0x6a991bc5, 0x5eab721a, 0xde5b6505,
+    0x843a5a65, 0x04ca4d7a, 0xec5e89db, 0x6cae9ec4, 0x36cfa1a4,
+    0xb63fb6bb, 0x820ddf64, 0x02fdc87b, 0x589cf71b, 0xd86ce004,
+    0x52c47818, 0xd2346f07, 0x88555067, 0x08a54778, 0x3c972ea7,
+    0xbc6739b8, 0xe60606d8, 0x66f611c7, 0x8e62d566, 0x0e92c279,
+    0x54f3fd19, 0xd403ea06, 0xe03183d9, 0x60c194c6, 0x3aa0aba6,
+    0xba50bcb9},
+   {0x00000000, 0x9570d495, 0xf190af6b, 0x64e07bfe, 0x38505897,
+    0xad208c02, 0xc9c0f7fc, 0x5cb02369, 0x70a0b12e, 0xe5d065bb,
+    0x81301e45, 0x1440cad0, 0x48f0e9b9, 0xdd803d2c, 0xb96046d2,
+    0x2c109247, 0xe141625c, 0x7431b6c9, 0x10d1cd37, 0x85a119a2,
+    0xd9113acb, 0x4c61ee5e, 0x288195a0, 0xbdf14135, 0x91e1d372,
+    0x049107e7, 0x60717c19, 0xf501a88c, 0xa9b18be5, 0x3cc15f70,
+    0x5821248e, 0xcd51f01b, 0x19f3c2f9, 0x8c83166c, 0xe8636d92,
+    0x7d13b907, 0x21a39a6e, 0xb4d34efb, 0xd0333505, 0x4543e190,
+    0x695373d7, 0xfc23a742, 0x98c3dcbc, 0x0db30829, 0x51032b40,
+    0xc473ffd5, 0xa093842b, 0x35e350be, 0xf8b2a0a5, 0x6dc27430,
+    0x09220fce, 0x9c52db5b, 0xc0e2f832, 0x55922ca7, 0x31725759,
+    0xa40283cc, 0x8812118b, 0x1d62c51e, 0x7982bee0, 0xecf26a75,
+    0xb042491c, 0x25329d89, 0x41d2e677, 0xd4a232e2, 0x33e785f2,
+    0xa6975167, 0xc2772a99, 0x5707fe0c, 0x0bb7dd65, 0x9ec709f0,
+    0xfa27720e, 0x6f57a69b, 0x434734dc, 0xd637e049, 0xb2d79bb7,
+    0x27a74f22, 0x7b176c4b, 0xee67b8de, 0x8a87c320, 0x1ff717b5,
+    0xd2a6e7ae, 0x47d6333b, 0x233648c5, 0xb6469c50, 0xeaf6bf39,
+    0x7f866bac, 0x1b661052, 0x8e16c4c7, 0xa2065680, 0x37768215,
+    0x5396f9eb, 0xc6e62d7e, 0x9a560e17, 0x0f26da82, 0x6bc6a17c,
+    0xfeb675e9, 0x2a14470b, 0xbf64939e, 0xdb84e860, 0x4ef43cf5,
+    0x12441f9c, 0x8734cb09, 0xe3d4b0f7, 0x76a46462, 0x5ab4f625,
+    0xcfc422b0, 0xab24594e, 0x3e548ddb, 0x62e4aeb2, 0xf7947a27,
+    0x937401d9, 0x0604d54c, 0xcb552557, 0x5e25f1c2, 0x3ac58a3c,
+    0xafb55ea9, 0xf3057dc0, 0x6675a955, 0x0295d2ab, 0x97e5063e,
+    0xbbf59479, 0x2e8540ec, 0x4a653b12, 0xdf15ef87, 0x83a5ccee,
+    0x16d5187b, 0x72356385, 0xe745b710, 0x67cf0be4, 0xf2bfdf71,
+    0x965fa48f, 0x032f701a, 0x5f9f5373, 0xcaef87e6, 0xae0ffc18,
+    0x3b7f288d, 0x176fbaca, 0x821f6e5f, 0xe6ff15a1, 0x738fc134,
+    0x2f3fe25d, 0xba4f36c8, 0xdeaf4d36, 0x4bdf99a3, 0x868e69b8,
+    0x13febd2d, 0x771ec6d3, 0xe26e1246, 0xbede312f, 0x2baee5ba,
+    0x4f4e9e44, 0xda3e4ad1, 0xf62ed896, 0x635e0c03, 0x07be77fd,
+    0x92cea368, 0xce7e8001, 0x5b0e5494, 0x3fee2f6a, 0xaa9efbff,
+    0x7e3cc91d, 0xeb4c1d88, 0x8fac6676, 0x1adcb2e3, 0x466c918a,
+    0xd31c451f, 0xb7fc3ee1, 0x228cea74, 0x0e9c7833, 0x9becaca6,
+    0xff0cd758, 0x6a7c03cd, 0x36cc20a4, 0xa3bcf431, 0xc75c8fcf,
+    0x522c5b5a, 0x9f7dab41, 0x0a0d7fd4, 0x6eed042a, 0xfb9dd0bf,
+    0xa72df3d6, 0x325d2743, 0x56bd5cbd, 0xc3cd8828, 0xefdd1a6f,
+    0x7aadcefa, 0x1e4db504, 0x8b3d6191, 0xd78d42f8, 0x42fd966d,
+    0x261ded93, 0xb36d3906, 0x54288e16, 0xc1585a83, 0xa5b8217d,
+    0x30c8f5e8, 0x6c78d681, 0xf9080214, 0x9de879ea, 0x0898ad7f,
+    0x24883f38, 0xb1f8ebad, 0xd5189053, 0x406844c6, 0x1cd867af,
+    0x89a8b33a, 0xed48c8c4, 0x78381c51, 0xb569ec4a, 0x201938df,
+    0x44f94321, 0xd18997b4, 0x8d39b4dd, 0x18496048, 0x7ca91bb6,
+    0xe9d9cf23, 0xc5c95d64, 0x50b989f1, 0x3459f20f, 0xa129269a,
+    0xfd9905f3, 0x68e9d166, 0x0c09aa98, 0x99797e0d, 0x4ddb4cef,
+    0xd8ab987a, 0xbc4be384, 0x293b3711, 0x758b1478, 0xe0fbc0ed,
+    0x841bbb13, 0x116b6f86, 0x3d7bfdc1, 0xa80b2954, 0xcceb52aa,
+    0x599b863f, 0x052ba556, 0x905b71c3, 0xf4bb0a3d, 0x61cbdea8,
+    0xac9a2eb3, 0x39eafa26, 0x5d0a81d8, 0xc87a554d, 0x94ca7624,
+    0x01baa2b1, 0x655ad94f, 0xf02a0dda, 0xdc3a9f9d, 0x494a4b08,
+    0x2daa30f6, 0xb8dae463, 0xe46ac70a, 0x711a139f, 0x15fa6861,
+    0x808abcf4},
+   {0x00000000, 0xcf9e17c8, 0x444d29d1, 0x8bd33e19, 0x889a53a2,
+    0x4704446a, 0xccd77a73, 0x03496dbb, 0xca45a105, 0x05dbb6cd,
+    0x8e0888d4, 0x41969f1c, 0x42dff2a7, 0x8d41e56f, 0x0692db76,
+    0xc90cccbe, 0x4ffa444b, 0x80645383, 0x0bb76d9a, 0xc4297a52,
+    0xc76017e9, 0x08fe0021, 0x832d3e38, 0x4cb329f0, 0x85bfe54e,
+    0x4a21f286, 0xc1f2cc9f, 0x0e6cdb57, 0x0d25b6ec, 0xc2bba124,
+    0x49689f3d, 0x86f688f5, 0x9ff48896, 0x506a9f5e, 0xdbb9a147,
+    0x1427b68f, 0x176edb34, 0xd8f0ccfc, 0x5323f2e5, 0x9cbde52d,
+    0x55b12993, 0x9a2f3e5b, 0x11fc0042, 0xde62178a, 0xdd2b7a31,
+    0x12b56df9, 0x996653e0, 0x56f84428, 0xd00eccdd, 0x1f90db15,
+    0x9443e50c, 0x5bddf2c4, 0x58949f7f, 0x970a88b7, 0x1cd9b6ae,
+    0xd347a166, 0x1a4b6dd8, 0xd5d57a10, 0x5e064409, 0x919853c1,
+    0x92d13e7a, 0x5d4f29b2, 0xd69c17ab, 0x19020063, 0xe498176d,
+    0x2b0600a5, 0xa0d53ebc, 0x6f4b2974, 0x6c0244cf, 0xa39c5307,
+    0x284f6d1e, 0xe7d17ad6, 0x2eddb668, 0xe143a1a0, 0x6a909fb9,
+    0xa50e8871, 0xa647e5ca, 0x69d9f202, 0xe20acc1b, 0x2d94dbd3,
+    0xab625326, 0x64fc44ee, 0xef2f7af7, 0x20b16d3f, 0x23f80084,
+    0xec66174c, 0x67b52955, 0xa82b3e9d, 0x6127f223, 0xaeb9e5eb,
+    0x256adbf2, 0xeaf4cc3a, 0xe9bda181, 0x2623b649, 0xadf08850,
+    0x626e9f98, 0x7b6c9ffb, 0xb4f28833, 0x3f21b62a, 0xf0bfa1e2,
+    0xf3f6cc59, 0x3c68db91, 0xb7bbe588, 0x7825f240, 0xb1293efe,
+    0x7eb72936, 0xf564172f, 0x3afa00e7, 0x39b36d5c, 0xf62d7a94,
+    0x7dfe448d, 0xb2605345, 0x3496dbb0, 0xfb08cc78, 0x70dbf261,
+    0xbf45e5a9, 0xbc0c8812, 0x73929fda, 0xf841a1c3, 0x37dfb60b,
+    0xfed37ab5, 0x314d6d7d, 0xba9e5364, 0x750044ac, 0x76492917,
+    0xb9d73edf, 0x320400c6, 0xfd9a170e, 0x1241289b, 0xdddf3f53,
+    0x560c014a, 0x99921682, 0x9adb7b39, 0x55456cf1, 0xde9652e8,
+    0x11084520, 0xd804899e, 0x179a9e56, 0x9c49a04f, 0x53d7b787,
+    0x509eda3c, 0x9f00cdf4, 0x14d3f3ed, 0xdb4de425, 0x5dbb6cd0,
+    0x92257b18, 0x19f64501, 0xd66852c9, 0xd5213f72, 0x1abf28ba,
+    0x916c16a3, 0x5ef2016b, 0x97fecdd5, 0x5860da1d, 0xd3b3e404,
+    0x1c2df3cc, 0x1f649e77, 0xd0fa89bf, 0x5b29b7a6, 0x94b7a06e,
+    0x8db5a00d, 0x422bb7c5, 0xc9f889dc, 0x06669e14, 0x052ff3af,
+    0xcab1e467, 0x4162da7e, 0x8efccdb6, 0x47f00108, 0x886e16c0,
+    0x03bd28d9, 0xcc233f11, 0xcf6a52aa, 0x00f44562, 0x8b277b7b,
+    0x44b96cb3, 0xc24fe446, 0x0dd1f38e, 0x8602cd97, 0x499cda5f,
+    0x4ad5b7e4, 0x854ba02c, 0x0e989e35, 0xc10689fd, 0x080a4543,
+    0xc794528b, 0x4c476c92, 0x83d97b5a, 0x809016e1, 0x4f0e0129,
+    0xc4dd3f30, 0x0b4328f8, 0xf6d93ff6, 0x3947283e, 0xb2941627,
+    0x7d0a01ef, 0x7e436c54, 0xb1dd7b9c, 0x3a0e4585, 0xf590524d,
+    0x3c9c9ef3, 0xf302893b, 0x78d1b722, 0xb74fa0ea, 0xb406cd51,
+    0x7b98da99, 0xf04be480, 0x3fd5f348, 0xb9237bbd, 0x76bd6c75,
+    0xfd6e526c, 0x32f045a4, 0x31b9281f, 0xfe273fd7, 0x75f401ce,
+    0xba6a1606, 0x7366dab8, 0xbcf8cd70, 0x372bf369, 0xf8b5e4a1,
+    0xfbfc891a, 0x34629ed2, 0xbfb1a0cb, 0x702fb703, 0x692db760,
+    0xa6b3a0a8, 0x2d609eb1, 0xe2fe8979, 0xe1b7e4c2, 0x2e29f30a,
+    0xa5facd13, 0x6a64dadb, 0xa3681665, 0x6cf601ad, 0xe7253fb4,
+    0x28bb287c, 0x2bf245c7, 0xe46c520f, 0x6fbf6c16, 0xa0217bde,
+    0x26d7f32b, 0xe949e4e3, 0x629adafa, 0xad04cd32, 0xae4da089,
+    0x61d3b741, 0xea008958, 0x259e9e90, 0xec92522e, 0x230c45e6,
+    0xa8df7bff, 0x67416c37, 0x6408018c, 0xab961644, 0x2045285d,
+    0xefdb3f95},
+   {0x00000000, 0x24825136, 0x4904a26c, 0x6d86f35a, 0x920944d8,
+    0xb68b15ee, 0xdb0de6b4, 0xff8fb782, 0xff638ff1, 0xdbe1dec7,
+    0xb6672d9d, 0x92e57cab, 0x6d6acb29, 0x49e89a1f, 0x246e6945,
+    0x00ec3873, 0x25b619a3, 0x01344895, 0x6cb2bbcf, 0x4830eaf9,
+    0xb7bf5d7b, 0x933d0c4d, 0xfebbff17, 0xda39ae21, 0xdad59652,
+    0xfe57c764, 0x93d1343e, 0xb7536508, 0x48dcd28a, 0x6c5e83bc,
+    0x01d870e6, 0x255a21d0, 0x4b6c3346, 0x6fee6270, 0x0268912a,
+    0x26eac01c, 0xd965779e, 0xfde726a8, 0x9061d5f2, 0xb4e384c4,
+    0xb40fbcb7, 0x908ded81, 0xfd0b1edb, 0xd9894fed, 0x2606f86f,
+    0x0284a959, 0x6f025a03, 0x4b800b35, 0x6eda2ae5, 0x4a587bd3,
+    0x27de8889, 0x035cd9bf, 0xfcd36e3d, 0xd8513f0b, 0xb5d7cc51,
+    0x91559d67, 0x91b9a514, 0xb53bf422, 0xd8bd0778, 0xfc3f564e,
+    0x03b0e1cc, 0x2732b0fa, 0x4ab443a0, 0x6e361296, 0x96d8668c,
+    0xb25a37ba, 0xdfdcc4e0, 0xfb5e95d6, 0x04d12254, 0x20537362,
+    0x4dd58038, 0x6957d10e, 0x69bbe97d, 0x4d39b84b, 0x20bf4b11,
+    0x043d1a27, 0xfbb2ada5, 0xdf30fc93, 0xb2b60fc9, 0x96345eff,
+    0xb36e7f2f, 0x97ec2e19, 0xfa6add43, 0xdee88c75, 0x21673bf7,
+    0x05e56ac1, 0x6863999b, 0x4ce1c8ad, 0x4c0df0de, 0x688fa1e8,
+    0x050952b2, 0x218b0384, 0xde04b406, 0xfa86e530, 0x9700166a,
+    0xb382475c, 0xddb455ca, 0xf93604fc, 0x94b0f7a6, 0xb032a690,
+    0x4fbd1112, 0x6b3f4024, 0x06b9b37e, 0x223be248, 0x22d7da3b,
+    0x06558b0d, 0x6bd37857, 0x4f512961, 0xb0de9ee3, 0x945ccfd5,
+    0xf9da3c8f, 0xdd586db9, 0xf8024c69, 0xdc801d5f, 0xb106ee05,
+    0x9584bf33, 0x6a0b08b1, 0x4e895987, 0x230faadd, 0x078dfbeb,
+    0x0761c398, 0x23e392ae, 0x4e6561f4, 0x6ae730c2, 0x95688740,
+    0xb1ead676, 0xdc6c252c, 0xf8ee741a, 0xf6c1cb59, 0xd2439a6f,
+    0xbfc56935, 0x9b473803, 0x64c88f81, 0x404adeb7, 0x2dcc2ded,
+    0x094e7cdb, 0x09a244a8, 0x2d20159e, 0x40a6e6c4, 0x6424b7f2,
+    0x9bab0070, 0xbf295146, 0xd2afa21c, 0xf62df32a, 0xd377d2fa,
+    0xf7f583cc, 0x9a737096, 0xbef121a0, 0x417e9622, 0x65fcc714,
+    0x087a344e, 0x2cf86578, 0x2c145d0b, 0x08960c3d, 0x6510ff67,
+    0x4192ae51, 0xbe1d19d3, 0x9a9f48e5, 0xf719bbbf, 0xd39bea89,
+    0xbdadf81f, 0x992fa929, 0xf4a95a73, 0xd02b0b45, 0x2fa4bcc7,
+    0x0b26edf1, 0x66a01eab, 0x42224f9d, 0x42ce77ee, 0x664c26d8,
+    0x0bcad582, 0x2f4884b4, 0xd0c73336, 0xf4456200, 0x99c3915a,
+    0xbd41c06c, 0x981be1bc, 0xbc99b08a, 0xd11f43d0, 0xf59d12e6,
+    0x0a12a564, 0x2e90f452, 0x43160708, 0x6794563e, 0x67786e4d,
+    0x43fa3f7b, 0x2e7ccc21, 0x0afe9d17, 0xf5712a95, 0xd1f37ba3,
+    0xbc7588f9, 0x98f7d9cf, 0x6019add5, 0x449bfce3, 0x291d0fb9,
+    0x0d9f5e8f, 0xf210e90d, 0xd692b83b, 0xbb144b61, 0x9f961a57,
+    0x9f7a2224, 0xbbf87312, 0xd67e8048, 0xf2fcd17e, 0x0d7366fc,
+    0x29f137ca, 0x4477c490, 0x60f595a6, 0x45afb476, 0x612de540,
+    0x0cab161a, 0x2829472c, 0xd7a6f0ae, 0xf324a198, 0x9ea252c2,
+    0xba2003f4, 0xbacc3b87, 0x9e4e6ab1, 0xf3c899eb, 0xd74ac8dd,
+    0x28c57f5f, 0x0c472e69, 0x61c1dd33, 0x45438c05, 0x2b759e93,
+    0x0ff7cfa5, 0x62713cff, 0x46f36dc9, 0xb97cda4b, 0x9dfe8b7d,
+    0xf0787827, 0xd4fa2911, 0xd4161162, 0xf0944054, 0x9d12b30e,
+    0xb990e238, 0x461f55ba, 0x629d048c, 0x0f1bf7d6, 0x2b99a6e0,
+    0x0ec38730, 0x2a41d606, 0x47c7255c, 0x6345746a, 0x9ccac3e8,
+    0xb84892de, 0xd5ce6184, 0xf14c30b2, 0xf1a008c1, 0xd52259f7,
+    0xb8a4aaad, 0x9c26fb9b, 0x63a94c19, 0x472b1d2f, 0x2aadee75,
+    0x0e2fbf43},
+   {0x00000000, 0x36f290f3, 0x6de521e6, 0x5b17b115, 0xdbca43cc,
+    0xed38d33f, 0xb62f622a, 0x80ddf2d9, 0x6ce581d9, 0x5a17112a,
+    0x0100a03f, 0x37f230cc, 0xb72fc215, 0x81dd52e6, 0xdacae3f3,
+    0xec387300, 0xd9cb03b2, 0xef399341, 0xb42e2254, 0x82dcb2a7,
+    0x0201407e, 0x34f3d08d, 0x6fe46198, 0x5916f16b, 0xb52e826b,
+    0x83dc1298, 0xd8cba38d, 0xee39337e, 0x6ee4c1a7, 0x58165154,
+    0x0301e041, 0x35f370b2, 0x68e70125, 0x5e1591d6, 0x050220c3,
+    0x33f0b030, 0xb32d42e9, 0x85dfd21a, 0xdec8630f, 0xe83af3fc,
+    0x040280fc, 0x32f0100f, 0x69e7a11a, 0x5f1531e9, 0xdfc8c330,
+    0xe93a53c3, 0xb22de2d6, 0x84df7225, 0xb12c0297, 0x87de9264,
+    0xdcc92371, 0xea3bb382, 0x6ae6415b, 0x5c14d1a8, 0x070360bd,
+    0x31f1f04e, 0xddc9834e, 0xeb3b13bd, 0xb02ca2a8, 0x86de325b,
+    0x0603c082, 0x30f15071, 0x6be6e164, 0x5d147197, 0xd1ce024a,
+    0xe73c92b9, 0xbc2b23ac, 0x8ad9b35f, 0x0a044186, 0x3cf6d175,
+    0x67e16060, 0x5113f093, 0xbd2b8393, 0x8bd91360, 0xd0cea275,
+    0xe63c3286, 0x66e1c05f, 0x501350ac, 0x0b04e1b9, 0x3df6714a,
+    0x080501f8, 0x3ef7910b, 0x65e0201e, 0x5312b0ed, 0xd3cf4234,
+    0xe53dd2c7, 0xbe2a63d2, 0x88d8f321, 0x64e08021, 0x521210d2,
+    0x0905a1c7, 0x3ff73134, 0xbf2ac3ed, 0x89d8531e, 0xd2cfe20b,
+    0xe43d72f8, 0xb929036f, 0x8fdb939c, 0xd4cc2289, 0xe23eb27a,
+    0x62e340a3, 0x5411d050, 0x0f066145, 0x39f4f1b6, 0xd5cc82b6,
+    0xe33e1245, 0xb829a350, 0x8edb33a3, 0x0e06c17a, 0x38f45189,
+    0x63e3e09c, 0x5511706f, 0x60e200dd, 0x5610902e, 0x0d07213b,
+    0x3bf5b1c8, 0xbb284311, 0x8ddad3e2, 0xd6cd62f7, 0xe03ff204,
+    0x0c078104, 0x3af511f7, 0x61e2a0e2, 0x57103011, 0xd7cdc2c8,
+    0xe13f523b, 0xba28e32e, 0x8cda73dd, 0x78ed02d5, 0x4e1f9226,
+    0x15082333, 0x23fab3c0, 0xa3274119, 0x95d5d1ea, 0xcec260ff,
+    0xf830f00c, 0x1408830c, 0x22fa13ff, 0x79eda2ea, 0x4f1f3219,
+    0xcfc2c0c0, 0xf9305033, 0xa227e126, 0x94d571d5, 0xa1260167,
+    0x97d49194, 0xccc32081, 0xfa31b072, 0x7aec42ab, 0x4c1ed258,
+    0x1709634d, 0x21fbf3be, 0xcdc380be, 0xfb31104d, 0xa026a158,
+    0x96d431ab, 0x1609c372, 0x20fb5381, 0x7bece294, 0x4d1e7267,
+    0x100a03f0, 0x26f89303, 0x7def2216, 0x4b1db2e5, 0xcbc0403c,
+    0xfd32d0cf, 0xa62561da, 0x90d7f129, 0x7cef8229, 0x4a1d12da,
+    0x110aa3cf, 0x27f8333c, 0xa725c1e5, 0x91d75116, 0xcac0e003,
+    0xfc3270f0, 0xc9c10042, 0xff3390b1, 0xa42421a4, 0x92d6b157,
+    0x120b438e, 0x24f9d37d, 0x7fee6268, 0x491cf29b, 0xa524819b,
+    0x93d61168, 0xc8c1a07d, 0xfe33308e, 0x7eeec257, 0x481c52a4,
+    0x130be3b1, 0x25f97342, 0xa923009f, 0x9fd1906c, 0xc4c62179,
+    0xf234b18a, 0x72e94353, 0x441bd3a0, 0x1f0c62b5, 0x29fef246,
+    0xc5c68146, 0xf33411b5, 0xa823a0a0, 0x9ed13053, 0x1e0cc28a,
+    0x28fe5279, 0x73e9e36c, 0x451b739f, 0x70e8032d, 0x461a93de,
+    0x1d0d22cb, 0x2bffb238, 0xab2240e1, 0x9dd0d012, 0xc6c76107,
+    0xf035f1f4, 0x1c0d82f4, 0x2aff1207, 0x71e8a312, 0x471a33e1,
+    0xc7c7c138, 0xf13551cb, 0xaa22e0de, 0x9cd0702d, 0xc1c401ba,
+    0xf7369149, 0xac21205c, 0x9ad3b0af, 0x1a0e4276, 0x2cfcd285,
+    0x77eb6390, 0x4119f363, 0xad218063, 0x9bd31090, 0xc0c4a185,
+    0xf6363176, 0x76ebc3af, 0x4019535c, 0x1b0ee249, 0x2dfc72ba,
+    0x180f0208, 0x2efd92fb, 0x75ea23ee, 0x4318b31d, 0xc3c541c4,
+    0xf537d137, 0xae206022, 0x98d2f0d1, 0x74ea83d1, 0x42181322,
+    0x190fa237, 0x2ffd32c4, 0xaf20c01d, 0x99d250ee, 0xc2c5e1fb,
+    0xf4377108}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x0000000000000000, 0xf390f23600000000, 0xe621e56d00000000,
+    0x15b1175b00000000, 0xcc43cadb00000000, 0x3fd338ed00000000,
+    0x2a622fb600000000, 0xd9f2dd8000000000, 0xd981e56c00000000,
+    0x2a11175a00000000, 0x3fa0000100000000, 0xcc30f23700000000,
+    0x15c22fb700000000, 0xe652dd8100000000, 0xf3e3cada00000000,
+    0x007338ec00000000, 0xb203cbd900000000, 0x419339ef00000000,
+    0x54222eb400000000, 0xa7b2dc8200000000, 0x7e40010200000000,
+    0x8dd0f33400000000, 0x9861e46f00000000, 0x6bf1165900000000,
+    0x6b822eb500000000, 0x9812dc8300000000, 0x8da3cbd800000000,
+    0x7e3339ee00000000, 0xa7c1e46e00000000, 0x5451165800000000,
+    0x41e0010300000000, 0xb270f33500000000, 0x2501e76800000000,
+    0xd691155e00000000, 0xc320020500000000, 0x30b0f03300000000,
+    0xe9422db300000000, 0x1ad2df8500000000, 0x0f63c8de00000000,
+    0xfcf33ae800000000, 0xfc80020400000000, 0x0f10f03200000000,
+    0x1aa1e76900000000, 0xe931155f00000000, 0x30c3c8df00000000,
+    0xc3533ae900000000, 0xd6e22db200000000, 0x2572df8400000000,
+    0x97022cb100000000, 0x6492de8700000000, 0x7123c9dc00000000,
+    0x82b33bea00000000, 0x5b41e66a00000000, 0xa8d1145c00000000,
+    0xbd60030700000000, 0x4ef0f13100000000, 0x4e83c9dd00000000,
+    0xbd133beb00000000, 0xa8a22cb000000000, 0x5b32de8600000000,
+    0x82c0030600000000, 0x7150f13000000000, 0x64e1e66b00000000,
+    0x9771145d00000000, 0x4a02ced100000000, 0xb9923ce700000000,
+    0xac232bbc00000000, 0x5fb3d98a00000000, 0x8641040a00000000,
+    0x75d1f63c00000000, 0x6060e16700000000, 0x93f0135100000000,
+    0x93832bbd00000000, 0x6013d98b00000000, 0x75a2ced000000000,
+    0x86323ce600000000, 0x5fc0e16600000000, 0xac50135000000000,
+    0xb9e1040b00000000, 0x4a71f63d00000000, 0xf801050800000000,
+    0x0b91f73e00000000, 0x1e20e06500000000, 0xedb0125300000000,
+    0x3442cfd300000000, 0xc7d23de500000000, 0xd2632abe00000000,
+    0x21f3d88800000000, 0x2180e06400000000, 0xd210125200000000,
+    0xc7a1050900000000, 0x3431f73f00000000, 0xedc32abf00000000,
+    0x1e53d88900000000, 0x0be2cfd200000000, 0xf8723de400000000,
+    0x6f0329b900000000, 0x9c93db8f00000000, 0x8922ccd400000000,
+    0x7ab23ee200000000, 0xa340e36200000000, 0x50d0115400000000,
+    0x4561060f00000000, 0xb6f1f43900000000, 0xb682ccd500000000,
+    0x45123ee300000000, 0x50a329b800000000, 0xa333db8e00000000,
+    0x7ac1060e00000000, 0x8951f43800000000, 0x9ce0e36300000000,
+    0x6f70115500000000, 0xdd00e26000000000, 0x2e90105600000000,
+    0x3b21070d00000000, 0xc8b1f53b00000000, 0x114328bb00000000,
+    0xe2d3da8d00000000, 0xf762cdd600000000, 0x04f23fe000000000,
+    0x0481070c00000000, 0xf711f53a00000000, 0xe2a0e26100000000,
+    0x1130105700000000, 0xc8c2cdd700000000, 0x3b523fe100000000,
+    0x2ee328ba00000000, 0xdd73da8c00000000, 0xd502ed7800000000,
+    0x26921f4e00000000, 0x3323081500000000, 0xc0b3fa2300000000,
+    0x194127a300000000, 0xead1d59500000000, 0xff60c2ce00000000,
+    0x0cf030f800000000, 0x0c83081400000000, 0xff13fa2200000000,
+    0xeaa2ed7900000000, 0x19321f4f00000000, 0xc0c0c2cf00000000,
+    0x335030f900000000, 0x26e127a200000000, 0xd571d59400000000,
+    0x670126a100000000, 0x9491d49700000000, 0x8120c3cc00000000,
+    0x72b031fa00000000, 0xab42ec7a00000000, 0x58d21e4c00000000,
+    0x4d63091700000000, 0xbef3fb2100000000, 0xbe80c3cd00000000,
+    0x4d1031fb00000000, 0x58a126a000000000, 0xab31d49600000000,
+    0x72c3091600000000, 0x8153fb2000000000, 0x94e2ec7b00000000,
+    0x67721e4d00000000, 0xf0030a1000000000, 0x0393f82600000000,
+    0x1622ef7d00000000, 0xe5b21d4b00000000, 0x3c40c0cb00000000,
+    0xcfd032fd00000000, 0xda6125a600000000, 0x29f1d79000000000,
+    0x2982ef7c00000000, 0xda121d4a00000000, 0xcfa30a1100000000,
+    0x3c33f82700000000, 0xe5c125a700000000, 0x1651d79100000000,
+    0x03e0c0ca00000000, 0xf07032fc00000000, 0x4200c1c900000000,
+    0xb19033ff00000000, 0xa42124a400000000, 0x57b1d69200000000,
+    0x8e430b1200000000, 0x7dd3f92400000000, 0x6862ee7f00000000,
+    0x9bf21c4900000000, 0x9b8124a500000000, 0x6811d69300000000,
+    0x7da0c1c800000000, 0x8e3033fe00000000, 0x57c2ee7e00000000,
+    0xa4521c4800000000, 0xb1e30b1300000000, 0x4273f92500000000,
+    0x9f0023a900000000, 0x6c90d19f00000000, 0x7921c6c400000000,
+    0x8ab134f200000000, 0x5343e97200000000, 0xa0d31b4400000000,
+    0xb5620c1f00000000, 0x46f2fe2900000000, 0x4681c6c500000000,
+    0xb51134f300000000, 0xa0a023a800000000, 0x5330d19e00000000,
+    0x8ac20c1e00000000, 0x7952fe2800000000, 0x6ce3e97300000000,
+    0x9f731b4500000000, 0x2d03e87000000000, 0xde931a4600000000,
+    0xcb220d1d00000000, 0x38b2ff2b00000000, 0xe14022ab00000000,
+    0x12d0d09d00000000, 0x0761c7c600000000, 0xf4f135f000000000,
+    0xf4820d1c00000000, 0x0712ff2a00000000, 0x12a3e87100000000,
+    0xe1331a4700000000, 0x38c1c7c700000000, 0xcb5135f100000000,
+    0xdee022aa00000000, 0x2d70d09c00000000, 0xba01c4c100000000,
+    0x499136f700000000, 0x5c2021ac00000000, 0xafb0d39a00000000,
+    0x76420e1a00000000, 0x85d2fc2c00000000, 0x9063eb7700000000,
+    0x63f3194100000000, 0x638021ad00000000, 0x9010d39b00000000,
+    0x85a1c4c000000000, 0x763136f600000000, 0xafc3eb7600000000,
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+    0x1dc020af00000000, 0xee50d29900000000, 0xfbe1c5c200000000,
+    0x087137f400000000},
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+    0x0ac76ae400000000, 0x9f131a7100000000, 0x6168fa1500000000,
+    0xf4bc8a8000000000},
+   {0x0000000000000000, 0x1f17f08000000000, 0x7f2891da00000000,
+    0x603f615a00000000, 0xbf56536e00000000, 0xa041a3ee00000000,
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+    0xfd4c4b2400000000, 0x5447c26a00000000, 0xaf5b59b900000000,
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+    0x88b0bc2a00000000, 0xdf4381d000000000, 0x98d1c57f00000000,
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+    0x11e3eddb00000000, 0x5671a97400000000, 0xbd01bf3200000000,
+    0xfa93fb9d00000000, 0x722347b700000000, 0x35b1031800000000,
+    0x62423ee200000000, 0x25d07a4d00000000, 0xad60c66700000000,
+    0xeaf282c800000000, 0x4280cc4800000000, 0x051288e700000000,
+    0x8da234cd00000000, 0xca30706200000000, 0x9dc34d9800000000,
+    0xda51093700000000, 0x52e1b51d00000000, 0x1573f1b200000000,
+    0x430258c600000000, 0x04901c6900000000, 0x8c20a04300000000,
+    0xcbb2e4ec00000000, 0x9c41d91600000000, 0xdbd39db900000000,
+    0x5363219300000000, 0x14f1653c00000000, 0xbc832bbc00000000,
+    0xfb116f1300000000, 0x73a1d33900000000, 0x3433979600000000,
+    0x63c0aa6c00000000, 0x2452eec300000000, 0xace252e900000000,
+    0xeb70164600000000, 0x7a037e6500000000, 0x3d913aca00000000,
+    0xb52186e000000000, 0xf2b3c24f00000000, 0xa540ffb500000000,
+    0xe2d2bb1a00000000, 0x6a62073000000000, 0x2df0439f00000000,
+    0x85820d1f00000000, 0xc21049b000000000, 0x4aa0f59a00000000,
+    0x0d32b13500000000, 0x5ac18ccf00000000, 0x1d53c86000000000,
+    0x95e3744a00000000, 0xd27130e500000000, 0x8400999100000000,
+    0xc392dd3e00000000, 0x4b22611400000000, 0x0cb025bb00000000,
+    0x5b43184100000000, 0x1cd15cee00000000, 0x9461e0c400000000,
+    0xd3f3a46b00000000, 0x7b81eaeb00000000, 0x3c13ae4400000000,
+    0xb4a3126e00000000, 0xf33156c100000000, 0xa4c26b3b00000000,
+    0xe3502f9400000000, 0x6be093be00000000, 0x2c72d71100000000,
+    0xc702c15700000000, 0x809085f800000000, 0x082039d200000000,
+    0x4fb27d7d00000000, 0x1841408700000000, 0x5fd3042800000000,
+    0xd763b80200000000, 0x90f1fcad00000000, 0x3883b22d00000000,
+    0x7f11f68200000000, 0xf7a14aa800000000, 0xb0330e0700000000,
+    0xe7c033fd00000000, 0xa052775200000000, 0x28e2cb7800000000,
+    0x6f708fd700000000, 0x390126a300000000, 0x7e93620c00000000,
+    0xf623de2600000000, 0xb1b19a8900000000, 0xe642a77300000000,
+    0xa1d0e3dc00000000, 0x29605ff600000000, 0x6ef21b5900000000,
+    0xc68055d900000000, 0x8112117600000000, 0x09a2ad5c00000000,
+    0x4e30e9f300000000, 0x19c3d40900000000, 0x5e5190a600000000,
+    0xd6e12c8c00000000, 0x9173682300000000, 0xf406fcca00000000,
+    0xb394b86500000000, 0x3b24044f00000000, 0x7cb640e000000000,
+    0x2b457d1a00000000, 0x6cd739b500000000, 0xe467859f00000000,
+    0xa3f5c13000000000, 0x0b878fb000000000, 0x4c15cb1f00000000,
+    0xc4a5773500000000, 0x8337339a00000000, 0xd4c40e6000000000,
+    0x93564acf00000000, 0x1be6f6e500000000, 0x5c74b24a00000000,
+    0x0a051b3e00000000, 0x4d975f9100000000, 0xc527e3bb00000000,
+    0x82b5a71400000000, 0xd5469aee00000000, 0x92d4de4100000000,
+    0x1a64626b00000000, 0x5df626c400000000, 0xf584684400000000,
+    0xb2162ceb00000000, 0x3aa690c100000000, 0x7d34d46e00000000,
+    0x2ac7e99400000000, 0x6d55ad3b00000000, 0xe5e5111100000000,
+    0xa27755be00000000, 0x490743f800000000, 0x0e95075700000000,
+    0x8625bb7d00000000, 0xc1b7ffd200000000, 0x9644c22800000000,
+    0xd1d6868700000000, 0x59663aad00000000, 0x1ef47e0200000000,
+    0xb686308200000000, 0xf114742d00000000, 0x79a4c80700000000,
+    0x3e368ca800000000, 0x69c5b15200000000, 0x2e57f5fd00000000,
+    0xa6e749d700000000, 0xe1750d7800000000, 0xb704a40c00000000,
+    0xf096e0a300000000, 0x78265c8900000000, 0x3fb4182600000000,
+    0x684725dc00000000, 0x2fd5617300000000, 0xa765dd5900000000,
+    0xe0f799f600000000, 0x4885d77600000000, 0x0f1793d900000000,
+    0x87a72ff300000000, 0xc0356b5c00000000, 0x97c656a600000000,
+    0xd054120900000000, 0x58e4ae2300000000, 0x1f76ea8c00000000,
+    0x8e0582af00000000, 0xc997c60000000000, 0x41277a2a00000000,
+    0x06b53e8500000000, 0x5146037f00000000, 0x16d447d000000000,
+    0x9e64fbfa00000000, 0xd9f6bf5500000000, 0x7184f1d500000000,
+    0x3616b57a00000000, 0xbea6095000000000, 0xf9344dff00000000,
+    0xaec7700500000000, 0xe95534aa00000000, 0x61e5888000000000,
+    0x2677cc2f00000000, 0x7006655b00000000, 0x379421f400000000,
+    0xbf249dde00000000, 0xf8b6d97100000000, 0xaf45e48b00000000,
+    0xe8d7a02400000000, 0x60671c0e00000000, 0x27f558a100000000,
+    0x8f87162100000000, 0xc815528e00000000, 0x40a5eea400000000,
+    0x0737aa0b00000000, 0x50c497f100000000, 0x1756d35e00000000,
+    0x9fe66f7400000000, 0xd8742bdb00000000, 0x33043d9d00000000,
+    0x7496793200000000, 0xfc26c51800000000, 0xbbb481b700000000,
+    0xec47bc4d00000000, 0xabd5f8e200000000, 0x236544c800000000,
+    0x64f7006700000000, 0xcc854ee700000000, 0x8b170a4800000000,
+    0x03a7b66200000000, 0x4435f2cd00000000, 0x13c6cf3700000000,
+    0x54548b9800000000, 0xdce437b200000000, 0x9b76731d00000000,
+    0xcd07da6900000000, 0x8a959ec600000000, 0x022522ec00000000,
+    0x45b7664300000000, 0x12445bb900000000, 0x55d61f1600000000,
+    0xdd66a33c00000000, 0x9af4e79300000000, 0x3286a91300000000,
+    0x7514edbc00000000, 0xfda4519600000000, 0xba36153900000000,
+    0xedc528c300000000, 0xaa576c6c00000000, 0x22e7d04600000000,
+    0x657594e900000000}};
+
+#else /* W == 4 */
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0x65673b46, 0xcace768c, 0xafa94dca, 0x4eedeb59,
+    0x2b8ad01f, 0x84239dd5, 0xe144a693, 0x9ddbd6b2, 0xf8bcedf4,
+    0x5715a03e, 0x32729b78, 0xd3363deb, 0xb65106ad, 0x19f84b67,
+    0x7c9f7021, 0xe0c6ab25, 0x85a19063, 0x2a08dda9, 0x4f6fe6ef,
+    0xae2b407c, 0xcb4c7b3a, 0x64e536f0, 0x01820db6, 0x7d1d7d97,
+    0x187a46d1, 0xb7d30b1b, 0xd2b4305d, 0x33f096ce, 0x5697ad88,
+    0xf93ee042, 0x9c59db04, 0x1afc500b, 0x7f9b6b4d, 0xd0322687,
+    0xb5551dc1, 0x5411bb52, 0x31768014, 0x9edfcdde, 0xfbb8f698,
+    0x872786b9, 0xe240bdff, 0x4de9f035, 0x288ecb73, 0xc9ca6de0,
+    0xacad56a6, 0x03041b6c, 0x6663202a, 0xfa3afb2e, 0x9f5dc068,
+    0x30f48da2, 0x5593b6e4, 0xb4d71077, 0xd1b02b31, 0x7e1966fb,
+    0x1b7e5dbd, 0x67e12d9c, 0x028616da, 0xad2f5b10, 0xc8486056,
+    0x290cc6c5, 0x4c6bfd83, 0xe3c2b049, 0x86a58b0f, 0x35f8a016,
+    0x509f9b50, 0xff36d69a, 0x9a51eddc, 0x7b154b4f, 0x1e727009,
+    0xb1db3dc3, 0xd4bc0685, 0xa82376a4, 0xcd444de2, 0x62ed0028,
+    0x078a3b6e, 0xe6ce9dfd, 0x83a9a6bb, 0x2c00eb71, 0x4967d037,
+    0xd53e0b33, 0xb0593075, 0x1ff07dbf, 0x7a9746f9, 0x9bd3e06a,
+    0xfeb4db2c, 0x511d96e6, 0x347aada0, 0x48e5dd81, 0x2d82e6c7,
+    0x822bab0d, 0xe74c904b, 0x060836d8, 0x636f0d9e, 0xccc64054,
+    0xa9a17b12, 0x2f04f01d, 0x4a63cb5b, 0xe5ca8691, 0x80adbdd7,
+    0x61e91b44, 0x048e2002, 0xab276dc8, 0xce40568e, 0xb2df26af,
+    0xd7b81de9, 0x78115023, 0x1d766b65, 0xfc32cdf6, 0x9955f6b0,
+    0x36fcbb7a, 0x539b803c, 0xcfc25b38, 0xaaa5607e, 0x050c2db4,
+    0x606b16f2, 0x812fb061, 0xe4488b27, 0x4be1c6ed, 0x2e86fdab,
+    0x52198d8a, 0x377eb6cc, 0x98d7fb06, 0xfdb0c040, 0x1cf466d3,
+    0x79935d95, 0xd63a105f, 0xb35d2b19, 0x6bf1402c, 0x0e967b6a,
+    0xa13f36a0, 0xc4580de6, 0x251cab75, 0x407b9033, 0xefd2ddf9,
+    0x8ab5e6bf, 0xf62a969e, 0x934dadd8, 0x3ce4e012, 0x5983db54,
+    0xb8c77dc7, 0xdda04681, 0x72090b4b, 0x176e300d, 0x8b37eb09,
+    0xee50d04f, 0x41f99d85, 0x249ea6c3, 0xc5da0050, 0xa0bd3b16,
+    0x0f1476dc, 0x6a734d9a, 0x16ec3dbb, 0x738b06fd, 0xdc224b37,
+    0xb9457071, 0x5801d6e2, 0x3d66eda4, 0x92cfa06e, 0xf7a89b28,
+    0x710d1027, 0x146a2b61, 0xbbc366ab, 0xdea45ded, 0x3fe0fb7e,
+    0x5a87c038, 0xf52e8df2, 0x9049b6b4, 0xecd6c695, 0x89b1fdd3,
+    0x2618b019, 0x437f8b5f, 0xa23b2dcc, 0xc75c168a, 0x68f55b40,
+    0x0d926006, 0x91cbbb02, 0xf4ac8044, 0x5b05cd8e, 0x3e62f6c8,
+    0xdf26505b, 0xba416b1d, 0x15e826d7, 0x708f1d91, 0x0c106db0,
+    0x697756f6, 0xc6de1b3c, 0xa3b9207a, 0x42fd86e9, 0x279abdaf,
+    0x8833f065, 0xed54cb23, 0x5e09e03a, 0x3b6edb7c, 0x94c796b6,
+    0xf1a0adf0, 0x10e40b63, 0x75833025, 0xda2a7def, 0xbf4d46a9,
+    0xc3d23688, 0xa6b50dce, 0x091c4004, 0x6c7b7b42, 0x8d3fddd1,
+    0xe858e697, 0x47f1ab5d, 0x2296901b, 0xbecf4b1f, 0xdba87059,
+    0x74013d93, 0x116606d5, 0xf022a046, 0x95459b00, 0x3aecd6ca,
+    0x5f8bed8c, 0x23149dad, 0x4673a6eb, 0xe9daeb21, 0x8cbdd067,
+    0x6df976f4, 0x089e4db2, 0xa7370078, 0xc2503b3e, 0x44f5b031,
+    0x21928b77, 0x8e3bc6bd, 0xeb5cfdfb, 0x0a185b68, 0x6f7f602e,
+    0xc0d62de4, 0xa5b116a2, 0xd92e6683, 0xbc495dc5, 0x13e0100f,
+    0x76872b49, 0x97c38dda, 0xf2a4b69c, 0x5d0dfb56, 0x386ac010,
+    0xa4331b14, 0xc1542052, 0x6efd6d98, 0x0b9a56de, 0xeadef04d,
+    0x8fb9cb0b, 0x201086c1, 0x4577bd87, 0x39e8cda6, 0x5c8ff6e0,
+    0xf326bb2a, 0x9641806c, 0x770526ff, 0x12621db9, 0xbdcb5073,
+    0xd8ac6b35},
+   {0x00000000, 0xd7e28058, 0x74b406f1, 0xa35686a9, 0xe9680de2,
+    0x3e8a8dba, 0x9ddc0b13, 0x4a3e8b4b, 0x09a11d85, 0xde439ddd,
+    0x7d151b74, 0xaaf79b2c, 0xe0c91067, 0x372b903f, 0x947d1696,
+    0x439f96ce, 0x13423b0a, 0xc4a0bb52, 0x67f63dfb, 0xb014bda3,
+    0xfa2a36e8, 0x2dc8b6b0, 0x8e9e3019, 0x597cb041, 0x1ae3268f,
+    0xcd01a6d7, 0x6e57207e, 0xb9b5a026, 0xf38b2b6d, 0x2469ab35,
+    0x873f2d9c, 0x50ddadc4, 0x26847614, 0xf166f64c, 0x523070e5,
+    0x85d2f0bd, 0xcfec7bf6, 0x180efbae, 0xbb587d07, 0x6cbafd5f,
+    0x2f256b91, 0xf8c7ebc9, 0x5b916d60, 0x8c73ed38, 0xc64d6673,
+    0x11afe62b, 0xb2f96082, 0x651be0da, 0x35c64d1e, 0xe224cd46,
+    0x41724bef, 0x9690cbb7, 0xdcae40fc, 0x0b4cc0a4, 0xa81a460d,
+    0x7ff8c655, 0x3c67509b, 0xeb85d0c3, 0x48d3566a, 0x9f31d632,
+    0xd50f5d79, 0x02eddd21, 0xa1bb5b88, 0x7659dbd0, 0x4d08ec28,
+    0x9aea6c70, 0x39bcead9, 0xee5e6a81, 0xa460e1ca, 0x73826192,
+    0xd0d4e73b, 0x07366763, 0x44a9f1ad, 0x934b71f5, 0x301df75c,
+    0xe7ff7704, 0xadc1fc4f, 0x7a237c17, 0xd975fabe, 0x0e977ae6,
+    0x5e4ad722, 0x89a8577a, 0x2afed1d3, 0xfd1c518b, 0xb722dac0,
+    0x60c05a98, 0xc396dc31, 0x14745c69, 0x57ebcaa7, 0x80094aff,
+    0x235fcc56, 0xf4bd4c0e, 0xbe83c745, 0x6961471d, 0xca37c1b4,
+    0x1dd541ec, 0x6b8c9a3c, 0xbc6e1a64, 0x1f389ccd, 0xc8da1c95,
+    0x82e497de, 0x55061786, 0xf650912f, 0x21b21177, 0x622d87b9,
+    0xb5cf07e1, 0x16998148, 0xc17b0110, 0x8b458a5b, 0x5ca70a03,
+    0xfff18caa, 0x28130cf2, 0x78cea136, 0xaf2c216e, 0x0c7aa7c7,
+    0xdb98279f, 0x91a6acd4, 0x46442c8c, 0xe512aa25, 0x32f02a7d,
+    0x716fbcb3, 0xa68d3ceb, 0x05dbba42, 0xd2393a1a, 0x9807b151,
+    0x4fe53109, 0xecb3b7a0, 0x3b5137f8, 0x9a11d850, 0x4df35808,
+    0xeea5dea1, 0x39475ef9, 0x7379d5b2, 0xa49b55ea, 0x07cdd343,
+    0xd02f531b, 0x93b0c5d5, 0x4452458d, 0xe704c324, 0x30e6437c,
+    0x7ad8c837, 0xad3a486f, 0x0e6ccec6, 0xd98e4e9e, 0x8953e35a,
+    0x5eb16302, 0xfde7e5ab, 0x2a0565f3, 0x603beeb8, 0xb7d96ee0,
+    0x148fe849, 0xc36d6811, 0x80f2fedf, 0x57107e87, 0xf446f82e,
+    0x23a47876, 0x699af33d, 0xbe787365, 0x1d2ef5cc, 0xcacc7594,
+    0xbc95ae44, 0x6b772e1c, 0xc821a8b5, 0x1fc328ed, 0x55fda3a6,
+    0x821f23fe, 0x2149a557, 0xf6ab250f, 0xb534b3c1, 0x62d63399,
+    0xc180b530, 0x16623568, 0x5c5cbe23, 0x8bbe3e7b, 0x28e8b8d2,
+    0xff0a388a, 0xafd7954e, 0x78351516, 0xdb6393bf, 0x0c8113e7,
+    0x46bf98ac, 0x915d18f4, 0x320b9e5d, 0xe5e91e05, 0xa67688cb,
+    0x71940893, 0xd2c28e3a, 0x05200e62, 0x4f1e8529, 0x98fc0571,
+    0x3baa83d8, 0xec480380, 0xd7193478, 0x00fbb420, 0xa3ad3289,
+    0x744fb2d1, 0x3e71399a, 0xe993b9c2, 0x4ac53f6b, 0x9d27bf33,
+    0xdeb829fd, 0x095aa9a5, 0xaa0c2f0c, 0x7deeaf54, 0x37d0241f,
+    0xe032a447, 0x436422ee, 0x9486a2b6, 0xc45b0f72, 0x13b98f2a,
+    0xb0ef0983, 0x670d89db, 0x2d330290, 0xfad182c8, 0x59870461,
+    0x8e658439, 0xcdfa12f7, 0x1a1892af, 0xb94e1406, 0x6eac945e,
+    0x24921f15, 0xf3709f4d, 0x502619e4, 0x87c499bc, 0xf19d426c,
+    0x267fc234, 0x8529449d, 0x52cbc4c5, 0x18f54f8e, 0xcf17cfd6,
+    0x6c41497f, 0xbba3c927, 0xf83c5fe9, 0x2fdedfb1, 0x8c885918,
+    0x5b6ad940, 0x1154520b, 0xc6b6d253, 0x65e054fa, 0xb202d4a2,
+    0xe2df7966, 0x353df93e, 0x966b7f97, 0x4189ffcf, 0x0bb77484,
+    0xdc55f4dc, 0x7f037275, 0xa8e1f22d, 0xeb7e64e3, 0x3c9ce4bb,
+    0x9fca6212, 0x4828e24a, 0x02166901, 0xd5f4e959, 0x76a26ff0,
+    0xa140efa8},
+   {0x00000000, 0xef52b6e1, 0x05d46b83, 0xea86dd62, 0x0ba8d706,
+    0xe4fa61e7, 0x0e7cbc85, 0xe12e0a64, 0x1751ae0c, 0xf80318ed,
+    0x1285c58f, 0xfdd7736e, 0x1cf9790a, 0xf3abcfeb, 0x192d1289,
+    0xf67fa468, 0x2ea35c18, 0xc1f1eaf9, 0x2b77379b, 0xc425817a,
+    0x250b8b1e, 0xca593dff, 0x20dfe09d, 0xcf8d567c, 0x39f2f214,
+    0xd6a044f5, 0x3c269997, 0xd3742f76, 0x325a2512, 0xdd0893f3,
+    0x378e4e91, 0xd8dcf870, 0x5d46b830, 0xb2140ed1, 0x5892d3b3,
+    0xb7c06552, 0x56ee6f36, 0xb9bcd9d7, 0x533a04b5, 0xbc68b254,
+    0x4a17163c, 0xa545a0dd, 0x4fc37dbf, 0xa091cb5e, 0x41bfc13a,
+    0xaeed77db, 0x446baab9, 0xab391c58, 0x73e5e428, 0x9cb752c9,
+    0x76318fab, 0x9963394a, 0x784d332e, 0x971f85cf, 0x7d9958ad,
+    0x92cbee4c, 0x64b44a24, 0x8be6fcc5, 0x616021a7, 0x8e329746,
+    0x6f1c9d22, 0x804e2bc3, 0x6ac8f6a1, 0x859a4040, 0xba8d7060,
+    0x55dfc681, 0xbf591be3, 0x500bad02, 0xb125a766, 0x5e771187,
+    0xb4f1cce5, 0x5ba37a04, 0xaddcde6c, 0x428e688d, 0xa808b5ef,
+    0x475a030e, 0xa674096a, 0x4926bf8b, 0xa3a062e9, 0x4cf2d408,
+    0x942e2c78, 0x7b7c9a99, 0x91fa47fb, 0x7ea8f11a, 0x9f86fb7e,
+    0x70d44d9f, 0x9a5290fd, 0x7500261c, 0x837f8274, 0x6c2d3495,
+    0x86abe9f7, 0x69f95f16, 0x88d75572, 0x6785e393, 0x8d033ef1,
+    0x62518810, 0xe7cbc850, 0x08997eb1, 0xe21fa3d3, 0x0d4d1532,
+    0xec631f56, 0x0331a9b7, 0xe9b774d5, 0x06e5c234, 0xf09a665c,
+    0x1fc8d0bd, 0xf54e0ddf, 0x1a1cbb3e, 0xfb32b15a, 0x146007bb,
+    0xfee6dad9, 0x11b46c38, 0xc9689448, 0x263a22a9, 0xccbcffcb,
+    0x23ee492a, 0xc2c0434e, 0x2d92f5af, 0xc71428cd, 0x28469e2c,
+    0xde393a44, 0x316b8ca5, 0xdbed51c7, 0x34bfe726, 0xd591ed42,
+    0x3ac35ba3, 0xd04586c1, 0x3f173020, 0xae6be681, 0x41395060,
+    0xabbf8d02, 0x44ed3be3, 0xa5c33187, 0x4a918766, 0xa0175a04,
+    0x4f45ece5, 0xb93a488d, 0x5668fe6c, 0xbcee230e, 0x53bc95ef,
+    0xb2929f8b, 0x5dc0296a, 0xb746f408, 0x581442e9, 0x80c8ba99,
+    0x6f9a0c78, 0x851cd11a, 0x6a4e67fb, 0x8b606d9f, 0x6432db7e,
+    0x8eb4061c, 0x61e6b0fd, 0x97991495, 0x78cba274, 0x924d7f16,
+    0x7d1fc9f7, 0x9c31c393, 0x73637572, 0x99e5a810, 0x76b71ef1,
+    0xf32d5eb1, 0x1c7fe850, 0xf6f93532, 0x19ab83d3, 0xf88589b7,
+    0x17d73f56, 0xfd51e234, 0x120354d5, 0xe47cf0bd, 0x0b2e465c,
+    0xe1a89b3e, 0x0efa2ddf, 0xefd427bb, 0x0086915a, 0xea004c38,
+    0x0552fad9, 0xdd8e02a9, 0x32dcb448, 0xd85a692a, 0x3708dfcb,
+    0xd626d5af, 0x3974634e, 0xd3f2be2c, 0x3ca008cd, 0xcadfaca5,
+    0x258d1a44, 0xcf0bc726, 0x205971c7, 0xc1777ba3, 0x2e25cd42,
+    0xc4a31020, 0x2bf1a6c1, 0x14e696e1, 0xfbb42000, 0x1132fd62,
+    0xfe604b83, 0x1f4e41e7, 0xf01cf706, 0x1a9a2a64, 0xf5c89c85,
+    0x03b738ed, 0xece58e0c, 0x0663536e, 0xe931e58f, 0x081fefeb,
+    0xe74d590a, 0x0dcb8468, 0xe2993289, 0x3a45caf9, 0xd5177c18,
+    0x3f91a17a, 0xd0c3179b, 0x31ed1dff, 0xdebfab1e, 0x3439767c,
+    0xdb6bc09d, 0x2d1464f5, 0xc246d214, 0x28c00f76, 0xc792b997,
+    0x26bcb3f3, 0xc9ee0512, 0x2368d870, 0xcc3a6e91, 0x49a02ed1,
+    0xa6f29830, 0x4c744552, 0xa326f3b3, 0x4208f9d7, 0xad5a4f36,
+    0x47dc9254, 0xa88e24b5, 0x5ef180dd, 0xb1a3363c, 0x5b25eb5e,
+    0xb4775dbf, 0x555957db, 0xba0be13a, 0x508d3c58, 0xbfdf8ab9,
+    0x670372c9, 0x8851c428, 0x62d7194a, 0x8d85afab, 0x6caba5cf,
+    0x83f9132e, 0x697fce4c, 0x862d78ad, 0x7052dcc5, 0x9f006a24,
+    0x7586b746, 0x9ad401a7, 0x7bfa0bc3, 0x94a8bd22, 0x7e2e6040,
+    0x917cd6a1},
+   {0x00000000, 0x87a6cb43, 0xd43c90c7, 0x539a5b84, 0x730827cf,
+    0xf4aeec8c, 0xa734b708, 0x20927c4b, 0xe6104f9e, 0x61b684dd,
+    0x322cdf59, 0xb58a141a, 0x95186851, 0x12bea312, 0x4124f896,
+    0xc68233d5, 0x1751997d, 0x90f7523e, 0xc36d09ba, 0x44cbc2f9,
+    0x6459beb2, 0xe3ff75f1, 0xb0652e75, 0x37c3e536, 0xf141d6e3,
+    0x76e71da0, 0x257d4624, 0xa2db8d67, 0x8249f12c, 0x05ef3a6f,
+    0x567561eb, 0xd1d3aaa8, 0x2ea332fa, 0xa905f9b9, 0xfa9fa23d,
+    0x7d39697e, 0x5dab1535, 0xda0dde76, 0x899785f2, 0x0e314eb1,
+    0xc8b37d64, 0x4f15b627, 0x1c8feda3, 0x9b2926e0, 0xbbbb5aab,
+    0x3c1d91e8, 0x6f87ca6c, 0xe821012f, 0x39f2ab87, 0xbe5460c4,
+    0xedce3b40, 0x6a68f003, 0x4afa8c48, 0xcd5c470b, 0x9ec61c8f,
+    0x1960d7cc, 0xdfe2e419, 0x58442f5a, 0x0bde74de, 0x8c78bf9d,
+    0xaceac3d6, 0x2b4c0895, 0x78d65311, 0xff709852, 0x5d4665f4,
+    0xdae0aeb7, 0x897af533, 0x0edc3e70, 0x2e4e423b, 0xa9e88978,
+    0xfa72d2fc, 0x7dd419bf, 0xbb562a6a, 0x3cf0e129, 0x6f6abaad,
+    0xe8cc71ee, 0xc85e0da5, 0x4ff8c6e6, 0x1c629d62, 0x9bc45621,
+    0x4a17fc89, 0xcdb137ca, 0x9e2b6c4e, 0x198da70d, 0x391fdb46,
+    0xbeb91005, 0xed234b81, 0x6a8580c2, 0xac07b317, 0x2ba17854,
+    0x783b23d0, 0xff9de893, 0xdf0f94d8, 0x58a95f9b, 0x0b33041f,
+    0x8c95cf5c, 0x73e5570e, 0xf4439c4d, 0xa7d9c7c9, 0x207f0c8a,
+    0x00ed70c1, 0x874bbb82, 0xd4d1e006, 0x53772b45, 0x95f51890,
+    0x1253d3d3, 0x41c98857, 0xc66f4314, 0xe6fd3f5f, 0x615bf41c,
+    0x32c1af98, 0xb56764db, 0x64b4ce73, 0xe3120530, 0xb0885eb4,
+    0x372e95f7, 0x17bce9bc, 0x901a22ff, 0xc380797b, 0x4426b238,
+    0x82a481ed, 0x05024aae, 0x5698112a, 0xd13eda69, 0xf1aca622,
+    0x760a6d61, 0x259036e5, 0xa236fda6, 0xba8ccbe8, 0x3d2a00ab,
+    0x6eb05b2f, 0xe916906c, 0xc984ec27, 0x4e222764, 0x1db87ce0,
+    0x9a1eb7a3, 0x5c9c8476, 0xdb3a4f35, 0x88a014b1, 0x0f06dff2,
+    0x2f94a3b9, 0xa83268fa, 0xfba8337e, 0x7c0ef83d, 0xaddd5295,
+    0x2a7b99d6, 0x79e1c252, 0xfe470911, 0xded5755a, 0x5973be19,
+    0x0ae9e59d, 0x8d4f2ede, 0x4bcd1d0b, 0xcc6bd648, 0x9ff18dcc,
+    0x1857468f, 0x38c53ac4, 0xbf63f187, 0xecf9aa03, 0x6b5f6140,
+    0x942ff912, 0x13893251, 0x401369d5, 0xc7b5a296, 0xe727dedd,
+    0x6081159e, 0x331b4e1a, 0xb4bd8559, 0x723fb68c, 0xf5997dcf,
+    0xa603264b, 0x21a5ed08, 0x01379143, 0x86915a00, 0xd50b0184,
+    0x52adcac7, 0x837e606f, 0x04d8ab2c, 0x5742f0a8, 0xd0e43beb,
+    0xf07647a0, 0x77d08ce3, 0x244ad767, 0xa3ec1c24, 0x656e2ff1,
+    0xe2c8e4b2, 0xb152bf36, 0x36f47475, 0x1666083e, 0x91c0c37d,
+    0xc25a98f9, 0x45fc53ba, 0xe7caae1c, 0x606c655f, 0x33f63edb,
+    0xb450f598, 0x94c289d3, 0x13644290, 0x40fe1914, 0xc758d257,
+    0x01dae182, 0x867c2ac1, 0xd5e67145, 0x5240ba06, 0x72d2c64d,
+    0xf5740d0e, 0xa6ee568a, 0x21489dc9, 0xf09b3761, 0x773dfc22,
+    0x24a7a7a6, 0xa3016ce5, 0x839310ae, 0x0435dbed, 0x57af8069,
+    0xd0094b2a, 0x168b78ff, 0x912db3bc, 0xc2b7e838, 0x4511237b,
+    0x65835f30, 0xe2259473, 0xb1bfcff7, 0x361904b4, 0xc9699ce6,
+    0x4ecf57a5, 0x1d550c21, 0x9af3c762, 0xba61bb29, 0x3dc7706a,
+    0x6e5d2bee, 0xe9fbe0ad, 0x2f79d378, 0xa8df183b, 0xfb4543bf,
+    0x7ce388fc, 0x5c71f4b7, 0xdbd73ff4, 0x884d6470, 0x0febaf33,
+    0xde38059b, 0x599eced8, 0x0a04955c, 0x8da25e1f, 0xad302254,
+    0x2a96e917, 0x790cb293, 0xfeaa79d0, 0x38284a05, 0xbf8e8146,
+    0xec14dac2, 0x6bb21181, 0x4b206dca, 0xcc86a689, 0x9f1cfd0d,
+    0x18ba364e}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x00000000, 0x43cba687, 0xc7903cd4, 0x845b9a53, 0xcf270873,
+    0x8cecaef4, 0x08b734a7, 0x4b7c9220, 0x9e4f10e6, 0xdd84b661,
+    0x59df2c32, 0x1a148ab5, 0x51681895, 0x12a3be12, 0x96f82441,
+    0xd53382c6, 0x7d995117, 0x3e52f790, 0xba096dc3, 0xf9c2cb44,
+    0xb2be5964, 0xf175ffe3, 0x752e65b0, 0x36e5c337, 0xe3d641f1,
+    0xa01de776, 0x24467d25, 0x678ddba2, 0x2cf14982, 0x6f3aef05,
+    0xeb617556, 0xa8aad3d1, 0xfa32a32e, 0xb9f905a9, 0x3da29ffa,
+    0x7e69397d, 0x3515ab5d, 0x76de0dda, 0xf2859789, 0xb14e310e,
+    0x647db3c8, 0x27b6154f, 0xa3ed8f1c, 0xe026299b, 0xab5abbbb,
+    0xe8911d3c, 0x6cca876f, 0x2f0121e8, 0x87abf239, 0xc46054be,
+    0x403bceed, 0x03f0686a, 0x488cfa4a, 0x0b475ccd, 0x8f1cc69e,
+    0xccd76019, 0x19e4e2df, 0x5a2f4458, 0xde74de0b, 0x9dbf788c,
+    0xd6c3eaac, 0x95084c2b, 0x1153d678, 0x529870ff, 0xf465465d,
+    0xb7aee0da, 0x33f57a89, 0x703edc0e, 0x3b424e2e, 0x7889e8a9,
+    0xfcd272fa, 0xbf19d47d, 0x6a2a56bb, 0x29e1f03c, 0xadba6a6f,
+    0xee71cce8, 0xa50d5ec8, 0xe6c6f84f, 0x629d621c, 0x2156c49b,
+    0x89fc174a, 0xca37b1cd, 0x4e6c2b9e, 0x0da78d19, 0x46db1f39,
+    0x0510b9be, 0x814b23ed, 0xc280856a, 0x17b307ac, 0x5478a12b,
+    0xd0233b78, 0x93e89dff, 0xd8940fdf, 0x9b5fa958, 0x1f04330b,
+    0x5ccf958c, 0x0e57e573, 0x4d9c43f4, 0xc9c7d9a7, 0x8a0c7f20,
+    0xc170ed00, 0x82bb4b87, 0x06e0d1d4, 0x452b7753, 0x9018f595,
+    0xd3d35312, 0x5788c941, 0x14436fc6, 0x5f3ffde6, 0x1cf45b61,
+    0x98afc132, 0xdb6467b5, 0x73ceb464, 0x300512e3, 0xb45e88b0,
+    0xf7952e37, 0xbce9bc17, 0xff221a90, 0x7b7980c3, 0x38b22644,
+    0xed81a482, 0xae4a0205, 0x2a119856, 0x69da3ed1, 0x22a6acf1,
+    0x616d0a76, 0xe5369025, 0xa6fd36a2, 0xe8cb8cba, 0xab002a3d,
+    0x2f5bb06e, 0x6c9016e9, 0x27ec84c9, 0x6427224e, 0xe07cb81d,
+    0xa3b71e9a, 0x76849c5c, 0x354f3adb, 0xb114a088, 0xf2df060f,
+    0xb9a3942f, 0xfa6832a8, 0x7e33a8fb, 0x3df80e7c, 0x9552ddad,
+    0xd6997b2a, 0x52c2e179, 0x110947fe, 0x5a75d5de, 0x19be7359,
+    0x9de5e90a, 0xde2e4f8d, 0x0b1dcd4b, 0x48d66bcc, 0xcc8df19f,
+    0x8f465718, 0xc43ac538, 0x87f163bf, 0x03aaf9ec, 0x40615f6b,
+    0x12f92f94, 0x51328913, 0xd5691340, 0x96a2b5c7, 0xddde27e7,
+    0x9e158160, 0x1a4e1b33, 0x5985bdb4, 0x8cb63f72, 0xcf7d99f5,
+    0x4b2603a6, 0x08eda521, 0x43913701, 0x005a9186, 0x84010bd5,
+    0xc7caad52, 0x6f607e83, 0x2cabd804, 0xa8f04257, 0xeb3be4d0,
+    0xa04776f0, 0xe38cd077, 0x67d74a24, 0x241ceca3, 0xf12f6e65,
+    0xb2e4c8e2, 0x36bf52b1, 0x7574f436, 0x3e086616, 0x7dc3c091,
+    0xf9985ac2, 0xba53fc45, 0x1caecae7, 0x5f656c60, 0xdb3ef633,
+    0x98f550b4, 0xd389c294, 0x90426413, 0x1419fe40, 0x57d258c7,
+    0x82e1da01, 0xc12a7c86, 0x4571e6d5, 0x06ba4052, 0x4dc6d272,
+    0x0e0d74f5, 0x8a56eea6, 0xc99d4821, 0x61379bf0, 0x22fc3d77,
+    0xa6a7a724, 0xe56c01a3, 0xae109383, 0xeddb3504, 0x6980af57,
+    0x2a4b09d0, 0xff788b16, 0xbcb32d91, 0x38e8b7c2, 0x7b231145,
+    0x305f8365, 0x739425e2, 0xf7cfbfb1, 0xb4041936, 0xe69c69c9,
+    0xa557cf4e, 0x210c551d, 0x62c7f39a, 0x29bb61ba, 0x6a70c73d,
+    0xee2b5d6e, 0xade0fbe9, 0x78d3792f, 0x3b18dfa8, 0xbf4345fb,
+    0xfc88e37c, 0xb7f4715c, 0xf43fd7db, 0x70644d88, 0x33afeb0f,
+    0x9b0538de, 0xd8ce9e59, 0x5c95040a, 0x1f5ea28d, 0x542230ad,
+    0x17e9962a, 0x93b20c79, 0xd079aafe, 0x054a2838, 0x46818ebf,
+    0xc2da14ec, 0x8111b26b, 0xca6d204b, 0x89a686cc, 0x0dfd1c9f,
+    0x4e36ba18},
+   {0x00000000, 0xe1b652ef, 0x836bd405, 0x62dd86ea, 0x06d7a80b,
+    0xe761fae4, 0x85bc7c0e, 0x640a2ee1, 0x0cae5117, 0xed1803f8,
+    0x8fc58512, 0x6e73d7fd, 0x0a79f91c, 0xebcfabf3, 0x89122d19,
+    0x68a47ff6, 0x185ca32e, 0xf9eaf1c1, 0x9b37772b, 0x7a8125c4,
+    0x1e8b0b25, 0xff3d59ca, 0x9de0df20, 0x7c568dcf, 0x14f2f239,
+    0xf544a0d6, 0x9799263c, 0x762f74d3, 0x12255a32, 0xf39308dd,
+    0x914e8e37, 0x70f8dcd8, 0x30b8465d, 0xd10e14b2, 0xb3d39258,
+    0x5265c0b7, 0x366fee56, 0xd7d9bcb9, 0xb5043a53, 0x54b268bc,
+    0x3c16174a, 0xdda045a5, 0xbf7dc34f, 0x5ecb91a0, 0x3ac1bf41,
+    0xdb77edae, 0xb9aa6b44, 0x581c39ab, 0x28e4e573, 0xc952b79c,
+    0xab8f3176, 0x4a396399, 0x2e334d78, 0xcf851f97, 0xad58997d,
+    0x4ceecb92, 0x244ab464, 0xc5fce68b, 0xa7216061, 0x4697328e,
+    0x229d1c6f, 0xc32b4e80, 0xa1f6c86a, 0x40409a85, 0x60708dba,
+    0x81c6df55, 0xe31b59bf, 0x02ad0b50, 0x66a725b1, 0x8711775e,
+    0xe5ccf1b4, 0x047aa35b, 0x6cdedcad, 0x8d688e42, 0xefb508a8,
+    0x0e035a47, 0x6a0974a6, 0x8bbf2649, 0xe962a0a3, 0x08d4f24c,
+    0x782c2e94, 0x999a7c7b, 0xfb47fa91, 0x1af1a87e, 0x7efb869f,
+    0x9f4dd470, 0xfd90529a, 0x1c260075, 0x74827f83, 0x95342d6c,
+    0xf7e9ab86, 0x165ff969, 0x7255d788, 0x93e38567, 0xf13e038d,
+    0x10885162, 0x50c8cbe7, 0xb17e9908, 0xd3a31fe2, 0x32154d0d,
+    0x561f63ec, 0xb7a93103, 0xd574b7e9, 0x34c2e506, 0x5c669af0,
+    0xbdd0c81f, 0xdf0d4ef5, 0x3ebb1c1a, 0x5ab132fb, 0xbb076014,
+    0xd9dae6fe, 0x386cb411, 0x489468c9, 0xa9223a26, 0xcbffbccc,
+    0x2a49ee23, 0x4e43c0c2, 0xaff5922d, 0xcd2814c7, 0x2c9e4628,
+    0x443a39de, 0xa58c6b31, 0xc751eddb, 0x26e7bf34, 0x42ed91d5,
+    0xa35bc33a, 0xc18645d0, 0x2030173f, 0x81e66bae, 0x60503941,
+    0x028dbfab, 0xe33bed44, 0x8731c3a5, 0x6687914a, 0x045a17a0,
+    0xe5ec454f, 0x8d483ab9, 0x6cfe6856, 0x0e23eebc, 0xef95bc53,
+    0x8b9f92b2, 0x6a29c05d, 0x08f446b7, 0xe9421458, 0x99bac880,
+    0x780c9a6f, 0x1ad11c85, 0xfb674e6a, 0x9f6d608b, 0x7edb3264,
+    0x1c06b48e, 0xfdb0e661, 0x95149997, 0x74a2cb78, 0x167f4d92,
+    0xf7c91f7d, 0x93c3319c, 0x72756373, 0x10a8e599, 0xf11eb776,
+    0xb15e2df3, 0x50e87f1c, 0x3235f9f6, 0xd383ab19, 0xb78985f8,
+    0x563fd717, 0x34e251fd, 0xd5540312, 0xbdf07ce4, 0x5c462e0b,
+    0x3e9ba8e1, 0xdf2dfa0e, 0xbb27d4ef, 0x5a918600, 0x384c00ea,
+    0xd9fa5205, 0xa9028edd, 0x48b4dc32, 0x2a695ad8, 0xcbdf0837,
+    0xafd526d6, 0x4e637439, 0x2cbef2d3, 0xcd08a03c, 0xa5acdfca,
+    0x441a8d25, 0x26c70bcf, 0xc7715920, 0xa37b77c1, 0x42cd252e,
+    0x2010a3c4, 0xc1a6f12b, 0xe196e614, 0x0020b4fb, 0x62fd3211,
+    0x834b60fe, 0xe7414e1f, 0x06f71cf0, 0x642a9a1a, 0x859cc8f5,
+    0xed38b703, 0x0c8ee5ec, 0x6e536306, 0x8fe531e9, 0xebef1f08,
+    0x0a594de7, 0x6884cb0d, 0x893299e2, 0xf9ca453a, 0x187c17d5,
+    0x7aa1913f, 0x9b17c3d0, 0xff1ded31, 0x1eabbfde, 0x7c763934,
+    0x9dc06bdb, 0xf564142d, 0x14d246c2, 0x760fc028, 0x97b992c7,
+    0xf3b3bc26, 0x1205eec9, 0x70d86823, 0x916e3acc, 0xd12ea049,
+    0x3098f2a6, 0x5245744c, 0xb3f326a3, 0xd7f90842, 0x364f5aad,
+    0x5492dc47, 0xb5248ea8, 0xdd80f15e, 0x3c36a3b1, 0x5eeb255b,
+    0xbf5d77b4, 0xdb575955, 0x3ae10bba, 0x583c8d50, 0xb98adfbf,
+    0xc9720367, 0x28c45188, 0x4a19d762, 0xabaf858d, 0xcfa5ab6c,
+    0x2e13f983, 0x4cce7f69, 0xad782d86, 0xc5dc5270, 0x246a009f,
+    0x46b78675, 0xa701d49a, 0xc30bfa7b, 0x22bda894, 0x40602e7e,
+    0xa1d67c91},
+   {0x00000000, 0x5880e2d7, 0xf106b474, 0xa98656a3, 0xe20d68e9,
+    0xba8d8a3e, 0x130bdc9d, 0x4b8b3e4a, 0x851da109, 0xdd9d43de,
+    0x741b157d, 0x2c9bf7aa, 0x6710c9e0, 0x3f902b37, 0x96167d94,
+    0xce969f43, 0x0a3b4213, 0x52bba0c4, 0xfb3df667, 0xa3bd14b0,
+    0xe8362afa, 0xb0b6c82d, 0x19309e8e, 0x41b07c59, 0x8f26e31a,
+    0xd7a601cd, 0x7e20576e, 0x26a0b5b9, 0x6d2b8bf3, 0x35ab6924,
+    0x9c2d3f87, 0xc4addd50, 0x14768426, 0x4cf666f1, 0xe5703052,
+    0xbdf0d285, 0xf67beccf, 0xaefb0e18, 0x077d58bb, 0x5ffdba6c,
+    0x916b252f, 0xc9ebc7f8, 0x606d915b, 0x38ed738c, 0x73664dc6,
+    0x2be6af11, 0x8260f9b2, 0xdae01b65, 0x1e4dc635, 0x46cd24e2,
+    0xef4b7241, 0xb7cb9096, 0xfc40aedc, 0xa4c04c0b, 0x0d461aa8,
+    0x55c6f87f, 0x9b50673c, 0xc3d085eb, 0x6a56d348, 0x32d6319f,
+    0x795d0fd5, 0x21dded02, 0x885bbba1, 0xd0db5976, 0x28ec084d,
+    0x706cea9a, 0xd9eabc39, 0x816a5eee, 0xcae160a4, 0x92618273,
+    0x3be7d4d0, 0x63673607, 0xadf1a944, 0xf5714b93, 0x5cf71d30,
+    0x0477ffe7, 0x4ffcc1ad, 0x177c237a, 0xbefa75d9, 0xe67a970e,
+    0x22d74a5e, 0x7a57a889, 0xd3d1fe2a, 0x8b511cfd, 0xc0da22b7,
+    0x985ac060, 0x31dc96c3, 0x695c7414, 0xa7caeb57, 0xff4a0980,
+    0x56cc5f23, 0x0e4cbdf4, 0x45c783be, 0x1d476169, 0xb4c137ca,
+    0xec41d51d, 0x3c9a8c6b, 0x641a6ebc, 0xcd9c381f, 0x951cdac8,
+    0xde97e482, 0x86170655, 0x2f9150f6, 0x7711b221, 0xb9872d62,
+    0xe107cfb5, 0x48819916, 0x10017bc1, 0x5b8a458b, 0x030aa75c,
+    0xaa8cf1ff, 0xf20c1328, 0x36a1ce78, 0x6e212caf, 0xc7a77a0c,
+    0x9f2798db, 0xd4aca691, 0x8c2c4446, 0x25aa12e5, 0x7d2af032,
+    0xb3bc6f71, 0xeb3c8da6, 0x42badb05, 0x1a3a39d2, 0x51b10798,
+    0x0931e54f, 0xa0b7b3ec, 0xf837513b, 0x50d8119a, 0x0858f34d,
+    0xa1dea5ee, 0xf95e4739, 0xb2d57973, 0xea559ba4, 0x43d3cd07,
+    0x1b532fd0, 0xd5c5b093, 0x8d455244, 0x24c304e7, 0x7c43e630,
+    0x37c8d87a, 0x6f483aad, 0xc6ce6c0e, 0x9e4e8ed9, 0x5ae35389,
+    0x0263b15e, 0xabe5e7fd, 0xf365052a, 0xb8ee3b60, 0xe06ed9b7,
+    0x49e88f14, 0x11686dc3, 0xdffef280, 0x877e1057, 0x2ef846f4,
+    0x7678a423, 0x3df39a69, 0x657378be, 0xccf52e1d, 0x9475ccca,
+    0x44ae95bc, 0x1c2e776b, 0xb5a821c8, 0xed28c31f, 0xa6a3fd55,
+    0xfe231f82, 0x57a54921, 0x0f25abf6, 0xc1b334b5, 0x9933d662,
+    0x30b580c1, 0x68356216, 0x23be5c5c, 0x7b3ebe8b, 0xd2b8e828,
+    0x8a380aff, 0x4e95d7af, 0x16153578, 0xbf9363db, 0xe713810c,
+    0xac98bf46, 0xf4185d91, 0x5d9e0b32, 0x051ee9e5, 0xcb8876a6,
+    0x93089471, 0x3a8ec2d2, 0x620e2005, 0x29851e4f, 0x7105fc98,
+    0xd883aa3b, 0x800348ec, 0x783419d7, 0x20b4fb00, 0x8932ada3,
+    0xd1b24f74, 0x9a39713e, 0xc2b993e9, 0x6b3fc54a, 0x33bf279d,
+    0xfd29b8de, 0xa5a95a09, 0x0c2f0caa, 0x54afee7d, 0x1f24d037,
+    0x47a432e0, 0xee226443, 0xb6a28694, 0x720f5bc4, 0x2a8fb913,
+    0x8309efb0, 0xdb890d67, 0x9002332d, 0xc882d1fa, 0x61048759,
+    0x3984658e, 0xf712facd, 0xaf92181a, 0x06144eb9, 0x5e94ac6e,
+    0x151f9224, 0x4d9f70f3, 0xe4192650, 0xbc99c487, 0x6c429df1,
+    0x34c27f26, 0x9d442985, 0xc5c4cb52, 0x8e4ff518, 0xd6cf17cf,
+    0x7f49416c, 0x27c9a3bb, 0xe95f3cf8, 0xb1dfde2f, 0x1859888c,
+    0x40d96a5b, 0x0b525411, 0x53d2b6c6, 0xfa54e065, 0xa2d402b2,
+    0x6679dfe2, 0x3ef93d35, 0x977f6b96, 0xcfff8941, 0x8474b70b,
+    0xdcf455dc, 0x7572037f, 0x2df2e1a8, 0xe3647eeb, 0xbbe49c3c,
+    0x1262ca9f, 0x4ae22848, 0x01691602, 0x59e9f4d5, 0xf06fa276,
+    0xa8ef40a1},
+   {0x00000000, 0x463b6765, 0x8c76ceca, 0xca4da9af, 0x59ebed4e,
+    0x1fd08a2b, 0xd59d2384, 0x93a644e1, 0xb2d6db9d, 0xf4edbcf8,
+    0x3ea01557, 0x789b7232, 0xeb3d36d3, 0xad0651b6, 0x674bf819,
+    0x21709f7c, 0x25abc6e0, 0x6390a185, 0xa9dd082a, 0xefe66f4f,
+    0x7c402bae, 0x3a7b4ccb, 0xf036e564, 0xb60d8201, 0x977d1d7d,
+    0xd1467a18, 0x1b0bd3b7, 0x5d30b4d2, 0xce96f033, 0x88ad9756,
+    0x42e03ef9, 0x04db599c, 0x0b50fc1a, 0x4d6b9b7f, 0x872632d0,
+    0xc11d55b5, 0x52bb1154, 0x14807631, 0xdecddf9e, 0x98f6b8fb,
+    0xb9862787, 0xffbd40e2, 0x35f0e94d, 0x73cb8e28, 0xe06dcac9,
+    0xa656adac, 0x6c1b0403, 0x2a206366, 0x2efb3afa, 0x68c05d9f,
+    0xa28df430, 0xe4b69355, 0x7710d7b4, 0x312bb0d1, 0xfb66197e,
+    0xbd5d7e1b, 0x9c2de167, 0xda168602, 0x105b2fad, 0x566048c8,
+    0xc5c60c29, 0x83fd6b4c, 0x49b0c2e3, 0x0f8ba586, 0x16a0f835,
+    0x509b9f50, 0x9ad636ff, 0xdced519a, 0x4f4b157b, 0x0970721e,
+    0xc33ddbb1, 0x8506bcd4, 0xa47623a8, 0xe24d44cd, 0x2800ed62,
+    0x6e3b8a07, 0xfd9dcee6, 0xbba6a983, 0x71eb002c, 0x37d06749,
+    0x330b3ed5, 0x753059b0, 0xbf7df01f, 0xf946977a, 0x6ae0d39b,
+    0x2cdbb4fe, 0xe6961d51, 0xa0ad7a34, 0x81dde548, 0xc7e6822d,
+    0x0dab2b82, 0x4b904ce7, 0xd8360806, 0x9e0d6f63, 0x5440c6cc,
+    0x127ba1a9, 0x1df0042f, 0x5bcb634a, 0x9186cae5, 0xd7bdad80,
+    0x441be961, 0x02208e04, 0xc86d27ab, 0x8e5640ce, 0xaf26dfb2,
+    0xe91db8d7, 0x23501178, 0x656b761d, 0xf6cd32fc, 0xb0f65599,
+    0x7abbfc36, 0x3c809b53, 0x385bc2cf, 0x7e60a5aa, 0xb42d0c05,
+    0xf2166b60, 0x61b02f81, 0x278b48e4, 0xedc6e14b, 0xabfd862e,
+    0x8a8d1952, 0xccb67e37, 0x06fbd798, 0x40c0b0fd, 0xd366f41c,
+    0x955d9379, 0x5f103ad6, 0x192b5db3, 0x2c40f16b, 0x6a7b960e,
+    0xa0363fa1, 0xe60d58c4, 0x75ab1c25, 0x33907b40, 0xf9ddd2ef,
+    0xbfe6b58a, 0x9e962af6, 0xd8ad4d93, 0x12e0e43c, 0x54db8359,
+    0xc77dc7b8, 0x8146a0dd, 0x4b0b0972, 0x0d306e17, 0x09eb378b,
+    0x4fd050ee, 0x859df941, 0xc3a69e24, 0x5000dac5, 0x163bbda0,
+    0xdc76140f, 0x9a4d736a, 0xbb3dec16, 0xfd068b73, 0x374b22dc,
+    0x717045b9, 0xe2d60158, 0xa4ed663d, 0x6ea0cf92, 0x289ba8f7,
+    0x27100d71, 0x612b6a14, 0xab66c3bb, 0xed5da4de, 0x7efbe03f,
+    0x38c0875a, 0xf28d2ef5, 0xb4b64990, 0x95c6d6ec, 0xd3fdb189,
+    0x19b01826, 0x5f8b7f43, 0xcc2d3ba2, 0x8a165cc7, 0x405bf568,
+    0x0660920d, 0x02bbcb91, 0x4480acf4, 0x8ecd055b, 0xc8f6623e,
+    0x5b5026df, 0x1d6b41ba, 0xd726e815, 0x911d8f70, 0xb06d100c,
+    0xf6567769, 0x3c1bdec6, 0x7a20b9a3, 0xe986fd42, 0xafbd9a27,
+    0x65f03388, 0x23cb54ed, 0x3ae0095e, 0x7cdb6e3b, 0xb696c794,
+    0xf0ada0f1, 0x630be410, 0x25308375, 0xef7d2ada, 0xa9464dbf,
+    0x8836d2c3, 0xce0db5a6, 0x04401c09, 0x427b7b6c, 0xd1dd3f8d,
+    0x97e658e8, 0x5dabf147, 0x1b909622, 0x1f4bcfbe, 0x5970a8db,
+    0x933d0174, 0xd5066611, 0x46a022f0, 0x009b4595, 0xcad6ec3a,
+    0x8ced8b5f, 0xad9d1423, 0xeba67346, 0x21ebdae9, 0x67d0bd8c,
+    0xf476f96d, 0xb24d9e08, 0x780037a7, 0x3e3b50c2, 0x31b0f544,
+    0x778b9221, 0xbdc63b8e, 0xfbfd5ceb, 0x685b180a, 0x2e607f6f,
+    0xe42dd6c0, 0xa216b1a5, 0x83662ed9, 0xc55d49bc, 0x0f10e013,
+    0x492b8776, 0xda8dc397, 0x9cb6a4f2, 0x56fb0d5d, 0x10c06a38,
+    0x141b33a4, 0x522054c1, 0x986dfd6e, 0xde569a0b, 0x4df0deea,
+    0x0bcbb98f, 0xc1861020, 0x87bd7745, 0xa6cde839, 0xe0f68f5c,
+    0x2abb26f3, 0x6c804196, 0xff260577, 0xb91d6212, 0x7350cbbd,
+    0x356bacd8}};
+
+#endif
+
+#endif
+
+#if N == 6
+
+#if W == 8
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0x3db1ecdc, 0x7b63d9b8, 0x46d23564, 0xf6c7b370,
+    0xcb765fac, 0x8da46ac8, 0xb0158614, 0x36fe60a1, 0x0b4f8c7d,
+    0x4d9db919, 0x702c55c5, 0xc039d3d1, 0xfd883f0d, 0xbb5a0a69,
+    0x86ebe6b5, 0x6dfcc142, 0x504d2d9e, 0x169f18fa, 0x2b2ef426,
+    0x9b3b7232, 0xa68a9eee, 0xe058ab8a, 0xdde94756, 0x5b02a1e3,
+    0x66b34d3f, 0x2061785b, 0x1dd09487, 0xadc51293, 0x9074fe4f,
+    0xd6a6cb2b, 0xeb1727f7, 0xdbf98284, 0xe6486e58, 0xa09a5b3c,
+    0x9d2bb7e0, 0x2d3e31f4, 0x108fdd28, 0x565de84c, 0x6bec0490,
+    0xed07e225, 0xd0b60ef9, 0x96643b9d, 0xabd5d741, 0x1bc05155,
+    0x2671bd89, 0x60a388ed, 0x5d126431, 0xb60543c6, 0x8bb4af1a,
+    0xcd669a7e, 0xf0d776a2, 0x40c2f0b6, 0x7d731c6a, 0x3ba1290e,
+    0x0610c5d2, 0x80fb2367, 0xbd4acfbb, 0xfb98fadf, 0xc6291603,
+    0x763c9017, 0x4b8d7ccb, 0x0d5f49af, 0x30eea573, 0x6c820349,
+    0x5133ef95, 0x17e1daf1, 0x2a50362d, 0x9a45b039, 0xa7f45ce5,
+    0xe1266981, 0xdc97855d, 0x5a7c63e8, 0x67cd8f34, 0x211fba50,
+    0x1cae568c, 0xacbbd098, 0x910a3c44, 0xd7d80920, 0xea69e5fc,
+    0x017ec20b, 0x3ccf2ed7, 0x7a1d1bb3, 0x47acf76f, 0xf7b9717b,
+    0xca089da7, 0x8cdaa8c3, 0xb16b441f, 0x3780a2aa, 0x0a314e76,
+    0x4ce37b12, 0x715297ce, 0xc14711da, 0xfcf6fd06, 0xba24c862,
+    0x879524be, 0xb77b81cd, 0x8aca6d11, 0xcc185875, 0xf1a9b4a9,
+    0x41bc32bd, 0x7c0dde61, 0x3adfeb05, 0x076e07d9, 0x8185e16c,
+    0xbc340db0, 0xfae638d4, 0xc757d408, 0x7742521c, 0x4af3bec0,
+    0x0c218ba4, 0x31906778, 0xda87408f, 0xe736ac53, 0xa1e49937,
+    0x9c5575eb, 0x2c40f3ff, 0x11f11f23, 0x57232a47, 0x6a92c69b,
+    0xec79202e, 0xd1c8ccf2, 0x971af996, 0xaaab154a, 0x1abe935e,
+    0x270f7f82, 0x61dd4ae6, 0x5c6ca63a, 0xd9040692, 0xe4b5ea4e,
+    0xa267df2a, 0x9fd633f6, 0x2fc3b5e2, 0x1272593e, 0x54a06c5a,
+    0x69118086, 0xeffa6633, 0xd24b8aef, 0x9499bf8b, 0xa9285357,
+    0x193dd543, 0x248c399f, 0x625e0cfb, 0x5fefe027, 0xb4f8c7d0,
+    0x89492b0c, 0xcf9b1e68, 0xf22af2b4, 0x423f74a0, 0x7f8e987c,
+    0x395cad18, 0x04ed41c4, 0x8206a771, 0xbfb74bad, 0xf9657ec9,
+    0xc4d49215, 0x74c11401, 0x4970f8dd, 0x0fa2cdb9, 0x32132165,
+    0x02fd8416, 0x3f4c68ca, 0x799e5dae, 0x442fb172, 0xf43a3766,
+    0xc98bdbba, 0x8f59eede, 0xb2e80202, 0x3403e4b7, 0x09b2086b,
+    0x4f603d0f, 0x72d1d1d3, 0xc2c457c7, 0xff75bb1b, 0xb9a78e7f,
+    0x841662a3, 0x6f014554, 0x52b0a988, 0x14629cec, 0x29d37030,
+    0x99c6f624, 0xa4771af8, 0xe2a52f9c, 0xdf14c340, 0x59ff25f5,
+    0x644ec929, 0x229cfc4d, 0x1f2d1091, 0xaf389685, 0x92897a59,
+    0xd45b4f3d, 0xe9eaa3e1, 0xb58605db, 0x8837e907, 0xcee5dc63,
+    0xf35430bf, 0x4341b6ab, 0x7ef05a77, 0x38226f13, 0x059383cf,
+    0x8378657a, 0xbec989a6, 0xf81bbcc2, 0xc5aa501e, 0x75bfd60a,
+    0x480e3ad6, 0x0edc0fb2, 0x336de36e, 0xd87ac499, 0xe5cb2845,
+    0xa3191d21, 0x9ea8f1fd, 0x2ebd77e9, 0x130c9b35, 0x55deae51,
+    0x686f428d, 0xee84a438, 0xd33548e4, 0x95e77d80, 0xa856915c,
+    0x18431748, 0x25f2fb94, 0x6320cef0, 0x5e91222c, 0x6e7f875f,
+    0x53ce6b83, 0x151c5ee7, 0x28adb23b, 0x98b8342f, 0xa509d8f3,
+    0xe3dbed97, 0xde6a014b, 0x5881e7fe, 0x65300b22, 0x23e23e46,
+    0x1e53d29a, 0xae46548e, 0x93f7b852, 0xd5258d36, 0xe89461ea,
+    0x0383461d, 0x3e32aac1, 0x78e09fa5, 0x45517379, 0xf544f56d,
+    0xc8f519b1, 0x8e272cd5, 0xb396c009, 0x357d26bc, 0x08ccca60,
+    0x4e1eff04, 0x73af13d8, 0xc3ba95cc, 0xfe0b7910, 0xb8d94c74,
+    0x8568a0a8},
+   {0x00000000, 0x69790b65, 0xd2f216ca, 0xbb8b1daf, 0x7e952bd5,
+    0x17ec20b0, 0xac673d1f, 0xc51e367a, 0xfd2a57aa, 0x94535ccf,
+    0x2fd84160, 0x46a14a05, 0x83bf7c7f, 0xeac6771a, 0x514d6ab5,
+    0x383461d0, 0x2125a915, 0x485ca270, 0xf3d7bfdf, 0x9aaeb4ba,
+    0x5fb082c0, 0x36c989a5, 0x8d42940a, 0xe43b9f6f, 0xdc0ffebf,
+    0xb576f5da, 0x0efde875, 0x6784e310, 0xa29ad56a, 0xcbe3de0f,
+    0x7068c3a0, 0x1911c8c5, 0x424b522a, 0x2b32594f, 0x90b944e0,
+    0xf9c04f85, 0x3cde79ff, 0x55a7729a, 0xee2c6f35, 0x87556450,
+    0xbf610580, 0xd6180ee5, 0x6d93134a, 0x04ea182f, 0xc1f42e55,
+    0xa88d2530, 0x1306389f, 0x7a7f33fa, 0x636efb3f, 0x0a17f05a,
+    0xb19cedf5, 0xd8e5e690, 0x1dfbd0ea, 0x7482db8f, 0xcf09c620,
+    0xa670cd45, 0x9e44ac95, 0xf73da7f0, 0x4cb6ba5f, 0x25cfb13a,
+    0xe0d18740, 0x89a88c25, 0x3223918a, 0x5b5a9aef, 0x8496a454,
+    0xedefaf31, 0x5664b29e, 0x3f1db9fb, 0xfa038f81, 0x937a84e4,
+    0x28f1994b, 0x4188922e, 0x79bcf3fe, 0x10c5f89b, 0xab4ee534,
+    0xc237ee51, 0x0729d82b, 0x6e50d34e, 0xd5dbcee1, 0xbca2c584,
+    0xa5b30d41, 0xccca0624, 0x77411b8b, 0x1e3810ee, 0xdb262694,
+    0xb25f2df1, 0x09d4305e, 0x60ad3b3b, 0x58995aeb, 0x31e0518e,
+    0x8a6b4c21, 0xe3124744, 0x260c713e, 0x4f757a5b, 0xf4fe67f4,
+    0x9d876c91, 0xc6ddf67e, 0xafa4fd1b, 0x142fe0b4, 0x7d56ebd1,
+    0xb848ddab, 0xd131d6ce, 0x6abacb61, 0x03c3c004, 0x3bf7a1d4,
+    0x528eaab1, 0xe905b71e, 0x807cbc7b, 0x45628a01, 0x2c1b8164,
+    0x97909ccb, 0xfee997ae, 0xe7f85f6b, 0x8e81540e, 0x350a49a1,
+    0x5c7342c4, 0x996d74be, 0xf0147fdb, 0x4b9f6274, 0x22e66911,
+    0x1ad208c1, 0x73ab03a4, 0xc8201e0b, 0xa159156e, 0x64472314,
+    0x0d3e2871, 0xb6b535de, 0xdfcc3ebb, 0xd25c4ee9, 0xbb25458c,
+    0x00ae5823, 0x69d75346, 0xacc9653c, 0xc5b06e59, 0x7e3b73f6,
+    0x17427893, 0x2f761943, 0x460f1226, 0xfd840f89, 0x94fd04ec,
+    0x51e33296, 0x389a39f3, 0x8311245c, 0xea682f39, 0xf379e7fc,
+    0x9a00ec99, 0x218bf136, 0x48f2fa53, 0x8deccc29, 0xe495c74c,
+    0x5f1edae3, 0x3667d186, 0x0e53b056, 0x672abb33, 0xdca1a69c,
+    0xb5d8adf9, 0x70c69b83, 0x19bf90e6, 0xa2348d49, 0xcb4d862c,
+    0x90171cc3, 0xf96e17a6, 0x42e50a09, 0x2b9c016c, 0xee823716,
+    0x87fb3c73, 0x3c7021dc, 0x55092ab9, 0x6d3d4b69, 0x0444400c,
+    0xbfcf5da3, 0xd6b656c6, 0x13a860bc, 0x7ad16bd9, 0xc15a7676,
+    0xa8237d13, 0xb132b5d6, 0xd84bbeb3, 0x63c0a31c, 0x0ab9a879,
+    0xcfa79e03, 0xa6de9566, 0x1d5588c9, 0x742c83ac, 0x4c18e27c,
+    0x2561e919, 0x9eeaf4b6, 0xf793ffd3, 0x328dc9a9, 0x5bf4c2cc,
+    0xe07fdf63, 0x8906d406, 0x56caeabd, 0x3fb3e1d8, 0x8438fc77,
+    0xed41f712, 0x285fc168, 0x4126ca0d, 0xfaadd7a2, 0x93d4dcc7,
+    0xabe0bd17, 0xc299b672, 0x7912abdd, 0x106ba0b8, 0xd57596c2,
+    0xbc0c9da7, 0x07878008, 0x6efe8b6d, 0x77ef43a8, 0x1e9648cd,
+    0xa51d5562, 0xcc645e07, 0x097a687d, 0x60036318, 0xdb887eb7,
+    0xb2f175d2, 0x8ac51402, 0xe3bc1f67, 0x583702c8, 0x314e09ad,
+    0xf4503fd7, 0x9d2934b2, 0x26a2291d, 0x4fdb2278, 0x1481b897,
+    0x7df8b3f2, 0xc673ae5d, 0xaf0aa538, 0x6a149342, 0x036d9827,
+    0xb8e68588, 0xd19f8eed, 0xe9abef3d, 0x80d2e458, 0x3b59f9f7,
+    0x5220f292, 0x973ec4e8, 0xfe47cf8d, 0x45ccd222, 0x2cb5d947,
+    0x35a41182, 0x5cdd1ae7, 0xe7560748, 0x8e2f0c2d, 0x4b313a57,
+    0x22483132, 0x99c32c9d, 0xf0ba27f8, 0xc88e4628, 0xa1f74d4d,
+    0x1a7c50e2, 0x73055b87, 0xb61b6dfd, 0xdf626698, 0x64e97b37,
+    0x0d907052},
+   {0x00000000, 0x7fc99b93, 0xff933726, 0x805aacb5, 0x2457680d,
+    0x5b9ef39e, 0xdbc45f2b, 0xa40dc4b8, 0x48aed01a, 0x37674b89,
+    0xb73de73c, 0xc8f47caf, 0x6cf9b817, 0x13302384, 0x936a8f31,
+    0xeca314a2, 0x915da034, 0xee943ba7, 0x6ece9712, 0x11070c81,
+    0xb50ac839, 0xcac353aa, 0x4a99ff1f, 0x3550648c, 0xd9f3702e,
+    0xa63aebbd, 0x26604708, 0x59a9dc9b, 0xfda41823, 0x826d83b0,
+    0x02372f05, 0x7dfeb496, 0xf9ca4629, 0x8603ddba, 0x0659710f,
+    0x7990ea9c, 0xdd9d2e24, 0xa254b5b7, 0x220e1902, 0x5dc78291,
+    0xb1649633, 0xcead0da0, 0x4ef7a115, 0x313e3a86, 0x9533fe3e,
+    0xeafa65ad, 0x6aa0c918, 0x1569528b, 0x6897e61d, 0x175e7d8e,
+    0x9704d13b, 0xe8cd4aa8, 0x4cc08e10, 0x33091583, 0xb353b936,
+    0xcc9a22a5, 0x20393607, 0x5ff0ad94, 0xdfaa0121, 0xa0639ab2,
+    0x046e5e0a, 0x7ba7c599, 0xfbfd692c, 0x8434f2bf, 0x28e58a13,
+    0x572c1180, 0xd776bd35, 0xa8bf26a6, 0x0cb2e21e, 0x737b798d,
+    0xf321d538, 0x8ce84eab, 0x604b5a09, 0x1f82c19a, 0x9fd86d2f,
+    0xe011f6bc, 0x441c3204, 0x3bd5a997, 0xbb8f0522, 0xc4469eb1,
+    0xb9b82a27, 0xc671b1b4, 0x462b1d01, 0x39e28692, 0x9def422a,
+    0xe226d9b9, 0x627c750c, 0x1db5ee9f, 0xf116fa3d, 0x8edf61ae,
+    0x0e85cd1b, 0x714c5688, 0xd5419230, 0xaa8809a3, 0x2ad2a516,
+    0x551b3e85, 0xd12fcc3a, 0xaee657a9, 0x2ebcfb1c, 0x5175608f,
+    0xf578a437, 0x8ab13fa4, 0x0aeb9311, 0x75220882, 0x99811c20,
+    0xe64887b3, 0x66122b06, 0x19dbb095, 0xbdd6742d, 0xc21fefbe,
+    0x4245430b, 0x3d8cd898, 0x40726c0e, 0x3fbbf79d, 0xbfe15b28,
+    0xc028c0bb, 0x64250403, 0x1bec9f90, 0x9bb63325, 0xe47fa8b6,
+    0x08dcbc14, 0x77152787, 0xf74f8b32, 0x888610a1, 0x2c8bd419,
+    0x53424f8a, 0xd318e33f, 0xacd178ac, 0x51cb1426, 0x2e028fb5,
+    0xae582300, 0xd191b893, 0x759c7c2b, 0x0a55e7b8, 0x8a0f4b0d,
+    0xf5c6d09e, 0x1965c43c, 0x66ac5faf, 0xe6f6f31a, 0x993f6889,
+    0x3d32ac31, 0x42fb37a2, 0xc2a19b17, 0xbd680084, 0xc096b412,
+    0xbf5f2f81, 0x3f058334, 0x40cc18a7, 0xe4c1dc1f, 0x9b08478c,
+    0x1b52eb39, 0x649b70aa, 0x88386408, 0xf7f1ff9b, 0x77ab532e,
+    0x0862c8bd, 0xac6f0c05, 0xd3a69796, 0x53fc3b23, 0x2c35a0b0,
+    0xa801520f, 0xd7c8c99c, 0x57926529, 0x285bfeba, 0x8c563a02,
+    0xf39fa191, 0x73c50d24, 0x0c0c96b7, 0xe0af8215, 0x9f661986,
+    0x1f3cb533, 0x60f52ea0, 0xc4f8ea18, 0xbb31718b, 0x3b6bdd3e,
+    0x44a246ad, 0x395cf23b, 0x469569a8, 0xc6cfc51d, 0xb9065e8e,
+    0x1d0b9a36, 0x62c201a5, 0xe298ad10, 0x9d513683, 0x71f22221,
+    0x0e3bb9b2, 0x8e611507, 0xf1a88e94, 0x55a54a2c, 0x2a6cd1bf,
+    0xaa367d0a, 0xd5ffe699, 0x792e9e35, 0x06e705a6, 0x86bda913,
+    0xf9743280, 0x5d79f638, 0x22b06dab, 0xa2eac11e, 0xdd235a8d,
+    0x31804e2f, 0x4e49d5bc, 0xce137909, 0xb1dae29a, 0x15d72622,
+    0x6a1ebdb1, 0xea441104, 0x958d8a97, 0xe8733e01, 0x97baa592,
+    0x17e00927, 0x682992b4, 0xcc24560c, 0xb3edcd9f, 0x33b7612a,
+    0x4c7efab9, 0xa0ddee1b, 0xdf147588, 0x5f4ed93d, 0x208742ae,
+    0x848a8616, 0xfb431d85, 0x7b19b130, 0x04d02aa3, 0x80e4d81c,
+    0xff2d438f, 0x7f77ef3a, 0x00be74a9, 0xa4b3b011, 0xdb7a2b82,
+    0x5b208737, 0x24e91ca4, 0xc84a0806, 0xb7839395, 0x37d93f20,
+    0x4810a4b3, 0xec1d600b, 0x93d4fb98, 0x138e572d, 0x6c47ccbe,
+    0x11b97828, 0x6e70e3bb, 0xee2a4f0e, 0x91e3d49d, 0x35ee1025,
+    0x4a278bb6, 0xca7d2703, 0xb5b4bc90, 0x5917a832, 0x26de33a1,
+    0xa6849f14, 0xd94d0487, 0x7d40c03f, 0x02895bac, 0x82d3f719,
+    0xfd1a6c8a},
+   {0x00000000, 0xa396284c, 0x9c5d56d9, 0x3fcb7e95, 0xe3cbabf3,
+    0x405d83bf, 0x7f96fd2a, 0xdc00d566, 0x1ce651a7, 0xbf7079eb,
+    0x80bb077e, 0x232d2f32, 0xff2dfa54, 0x5cbbd218, 0x6370ac8d,
+    0xc0e684c1, 0x39cca34e, 0x9a5a8b02, 0xa591f597, 0x0607dddb,
+    0xda0708bd, 0x799120f1, 0x465a5e64, 0xe5cc7628, 0x252af2e9,
+    0x86bcdaa5, 0xb977a430, 0x1ae18c7c, 0xc6e1591a, 0x65777156,
+    0x5abc0fc3, 0xf92a278f, 0x7399469c, 0xd00f6ed0, 0xefc41045,
+    0x4c523809, 0x9052ed6f, 0x33c4c523, 0x0c0fbbb6, 0xaf9993fa,
+    0x6f7f173b, 0xcce93f77, 0xf32241e2, 0x50b469ae, 0x8cb4bcc8,
+    0x2f229484, 0x10e9ea11, 0xb37fc25d, 0x4a55e5d2, 0xe9c3cd9e,
+    0xd608b30b, 0x759e9b47, 0xa99e4e21, 0x0a08666d, 0x35c318f8,
+    0x965530b4, 0x56b3b475, 0xf5259c39, 0xcaeee2ac, 0x6978cae0,
+    0xb5781f86, 0x16ee37ca, 0x2925495f, 0x8ab36113, 0xe7328d38,
+    0x44a4a574, 0x7b6fdbe1, 0xd8f9f3ad, 0x04f926cb, 0xa76f0e87,
+    0x98a47012, 0x3b32585e, 0xfbd4dc9f, 0x5842f4d3, 0x67898a46,
+    0xc41fa20a, 0x181f776c, 0xbb895f20, 0x844221b5, 0x27d409f9,
+    0xdefe2e76, 0x7d68063a, 0x42a378af, 0xe13550e3, 0x3d358585,
+    0x9ea3adc9, 0xa168d35c, 0x02fefb10, 0xc2187fd1, 0x618e579d,
+    0x5e452908, 0xfdd30144, 0x21d3d422, 0x8245fc6e, 0xbd8e82fb,
+    0x1e18aab7, 0x94abcba4, 0x373de3e8, 0x08f69d7d, 0xab60b531,
+    0x77606057, 0xd4f6481b, 0xeb3d368e, 0x48ab1ec2, 0x884d9a03,
+    0x2bdbb24f, 0x1410ccda, 0xb786e496, 0x6b8631f0, 0xc81019bc,
+    0xf7db6729, 0x544d4f65, 0xad6768ea, 0x0ef140a6, 0x313a3e33,
+    0x92ac167f, 0x4eacc319, 0xed3aeb55, 0xd2f195c0, 0x7167bd8c,
+    0xb181394d, 0x12171101, 0x2ddc6f94, 0x8e4a47d8, 0x524a92be,
+    0xf1dcbaf2, 0xce17c467, 0x6d81ec2b, 0x15141c31, 0xb682347d,
+    0x89494ae8, 0x2adf62a4, 0xf6dfb7c2, 0x55499f8e, 0x6a82e11b,
+    0xc914c957, 0x09f24d96, 0xaa6465da, 0x95af1b4f, 0x36393303,
+    0xea39e665, 0x49afce29, 0x7664b0bc, 0xd5f298f0, 0x2cd8bf7f,
+    0x8f4e9733, 0xb085e9a6, 0x1313c1ea, 0xcf13148c, 0x6c853cc0,
+    0x534e4255, 0xf0d86a19, 0x303eeed8, 0x93a8c694, 0xac63b801,
+    0x0ff5904d, 0xd3f5452b, 0x70636d67, 0x4fa813f2, 0xec3e3bbe,
+    0x668d5aad, 0xc51b72e1, 0xfad00c74, 0x59462438, 0x8546f15e,
+    0x26d0d912, 0x191ba787, 0xba8d8fcb, 0x7a6b0b0a, 0xd9fd2346,
+    0xe6365dd3, 0x45a0759f, 0x99a0a0f9, 0x3a3688b5, 0x05fdf620,
+    0xa66bde6c, 0x5f41f9e3, 0xfcd7d1af, 0xc31caf3a, 0x608a8776,
+    0xbc8a5210, 0x1f1c7a5c, 0x20d704c9, 0x83412c85, 0x43a7a844,
+    0xe0318008, 0xdffafe9d, 0x7c6cd6d1, 0xa06c03b7, 0x03fa2bfb,
+    0x3c31556e, 0x9fa77d22, 0xf2269109, 0x51b0b945, 0x6e7bc7d0,
+    0xcdedef9c, 0x11ed3afa, 0xb27b12b6, 0x8db06c23, 0x2e26446f,
+    0xeec0c0ae, 0x4d56e8e2, 0x729d9677, 0xd10bbe3b, 0x0d0b6b5d,
+    0xae9d4311, 0x91563d84, 0x32c015c8, 0xcbea3247, 0x687c1a0b,
+    0x57b7649e, 0xf4214cd2, 0x282199b4, 0x8bb7b1f8, 0xb47ccf6d,
+    0x17eae721, 0xd70c63e0, 0x749a4bac, 0x4b513539, 0xe8c71d75,
+    0x34c7c813, 0x9751e05f, 0xa89a9eca, 0x0b0cb686, 0x81bfd795,
+    0x2229ffd9, 0x1de2814c, 0xbe74a900, 0x62747c66, 0xc1e2542a,
+    0xfe292abf, 0x5dbf02f3, 0x9d598632, 0x3ecfae7e, 0x0104d0eb,
+    0xa292f8a7, 0x7e922dc1, 0xdd04058d, 0xe2cf7b18, 0x41595354,
+    0xb87374db, 0x1be55c97, 0x242e2202, 0x87b80a4e, 0x5bb8df28,
+    0xf82ef764, 0xc7e589f1, 0x6473a1bd, 0xa495257c, 0x07030d30,
+    0x38c873a5, 0x9b5e5be9, 0x475e8e8f, 0xe4c8a6c3, 0xdb03d856,
+    0x7895f01a},
+   {0x00000000, 0x2a283862, 0x545070c4, 0x7e7848a6, 0xa8a0e188,
+    0x8288d9ea, 0xfcf0914c, 0xd6d8a92e, 0x8a30c551, 0xa018fd33,
+    0xde60b595, 0xf4488df7, 0x229024d9, 0x08b81cbb, 0x76c0541d,
+    0x5ce86c7f, 0xcf108ce3, 0xe538b481, 0x9b40fc27, 0xb168c445,
+    0x67b06d6b, 0x4d985509, 0x33e01daf, 0x19c825cd, 0x452049b2,
+    0x6f0871d0, 0x11703976, 0x3b580114, 0xed80a83a, 0xc7a89058,
+    0xb9d0d8fe, 0x93f8e09c, 0x45501f87, 0x6f7827e5, 0x11006f43,
+    0x3b285721, 0xedf0fe0f, 0xc7d8c66d, 0xb9a08ecb, 0x9388b6a9,
+    0xcf60dad6, 0xe548e2b4, 0x9b30aa12, 0xb1189270, 0x67c03b5e,
+    0x4de8033c, 0x33904b9a, 0x19b873f8, 0x8a409364, 0xa068ab06,
+    0xde10e3a0, 0xf438dbc2, 0x22e072ec, 0x08c84a8e, 0x76b00228,
+    0x5c983a4a, 0x00705635, 0x2a586e57, 0x542026f1, 0x7e081e93,
+    0xa8d0b7bd, 0x82f88fdf, 0xfc80c779, 0xd6a8ff1b, 0x8aa03f0e,
+    0xa088076c, 0xdef04fca, 0xf4d877a8, 0x2200de86, 0x0828e6e4,
+    0x7650ae42, 0x5c789620, 0x0090fa5f, 0x2ab8c23d, 0x54c08a9b,
+    0x7ee8b2f9, 0xa8301bd7, 0x821823b5, 0xfc606b13, 0xd6485371,
+    0x45b0b3ed, 0x6f988b8f, 0x11e0c329, 0x3bc8fb4b, 0xed105265,
+    0xc7386a07, 0xb94022a1, 0x93681ac3, 0xcf8076bc, 0xe5a84ede,
+    0x9bd00678, 0xb1f83e1a, 0x67209734, 0x4d08af56, 0x3370e7f0,
+    0x1958df92, 0xcff02089, 0xe5d818eb, 0x9ba0504d, 0xb188682f,
+    0x6750c101, 0x4d78f963, 0x3300b1c5, 0x192889a7, 0x45c0e5d8,
+    0x6fe8ddba, 0x1190951c, 0x3bb8ad7e, 0xed600450, 0xc7483c32,
+    0xb9307494, 0x93184cf6, 0x00e0ac6a, 0x2ac89408, 0x54b0dcae,
+    0x7e98e4cc, 0xa8404de2, 0x82687580, 0xfc103d26, 0xd6380544,
+    0x8ad0693b, 0xa0f85159, 0xde8019ff, 0xf4a8219d, 0x227088b3,
+    0x0858b0d1, 0x7620f877, 0x5c08c015, 0xce31785d, 0xe419403f,
+    0x9a610899, 0xb04930fb, 0x669199d5, 0x4cb9a1b7, 0x32c1e911,
+    0x18e9d173, 0x4401bd0c, 0x6e29856e, 0x1051cdc8, 0x3a79f5aa,
+    0xeca15c84, 0xc68964e6, 0xb8f12c40, 0x92d91422, 0x0121f4be,
+    0x2b09ccdc, 0x5571847a, 0x7f59bc18, 0xa9811536, 0x83a92d54,
+    0xfdd165f2, 0xd7f95d90, 0x8b1131ef, 0xa139098d, 0xdf41412b,
+    0xf5697949, 0x23b1d067, 0x0999e805, 0x77e1a0a3, 0x5dc998c1,
+    0x8b6167da, 0xa1495fb8, 0xdf31171e, 0xf5192f7c, 0x23c18652,
+    0x09e9be30, 0x7791f696, 0x5db9cef4, 0x0151a28b, 0x2b799ae9,
+    0x5501d24f, 0x7f29ea2d, 0xa9f14303, 0x83d97b61, 0xfda133c7,
+    0xd7890ba5, 0x4471eb39, 0x6e59d35b, 0x10219bfd, 0x3a09a39f,
+    0xecd10ab1, 0xc6f932d3, 0xb8817a75, 0x92a94217, 0xce412e68,
+    0xe469160a, 0x9a115eac, 0xb03966ce, 0x66e1cfe0, 0x4cc9f782,
+    0x32b1bf24, 0x18998746, 0x44914753, 0x6eb97f31, 0x10c13797,
+    0x3ae90ff5, 0xec31a6db, 0xc6199eb9, 0xb861d61f, 0x9249ee7d,
+    0xcea18202, 0xe489ba60, 0x9af1f2c6, 0xb0d9caa4, 0x6601638a,
+    0x4c295be8, 0x3251134e, 0x18792b2c, 0x8b81cbb0, 0xa1a9f3d2,
+    0xdfd1bb74, 0xf5f98316, 0x23212a38, 0x0909125a, 0x77715afc,
+    0x5d59629e, 0x01b10ee1, 0x2b993683, 0x55e17e25, 0x7fc94647,
+    0xa911ef69, 0x8339d70b, 0xfd419fad, 0xd769a7cf, 0x01c158d4,
+    0x2be960b6, 0x55912810, 0x7fb91072, 0xa961b95c, 0x8349813e,
+    0xfd31c998, 0xd719f1fa, 0x8bf19d85, 0xa1d9a5e7, 0xdfa1ed41,
+    0xf589d523, 0x23517c0d, 0x0979446f, 0x77010cc9, 0x5d2934ab,
+    0xced1d437, 0xe4f9ec55, 0x9a81a4f3, 0xb0a99c91, 0x667135bf,
+    0x4c590ddd, 0x3221457b, 0x18097d19, 0x44e11166, 0x6ec92904,
+    0x10b161a2, 0x3a9959c0, 0xec41f0ee, 0xc669c88c, 0xb811802a,
+    0x9239b848},
+   {0x00000000, 0x4713f6fb, 0x8e27edf6, 0xc9341b0d, 0xc73eddad,
+    0x802d2b56, 0x4919305b, 0x0e0ac6a0, 0x550cbd1b, 0x121f4be0,
+    0xdb2b50ed, 0x9c38a616, 0x923260b6, 0xd521964d, 0x1c158d40,
+    0x5b067bbb, 0xaa197a36, 0xed0a8ccd, 0x243e97c0, 0x632d613b,
+    0x6d27a79b, 0x2a345160, 0xe3004a6d, 0xa413bc96, 0xff15c72d,
+    0xb80631d6, 0x71322adb, 0x3621dc20, 0x382b1a80, 0x7f38ec7b,
+    0xb60cf776, 0xf11f018d, 0x8f43f22d, 0xc85004d6, 0x01641fdb,
+    0x4677e920, 0x487d2f80, 0x0f6ed97b, 0xc65ac276, 0x8149348d,
+    0xda4f4f36, 0x9d5cb9cd, 0x5468a2c0, 0x137b543b, 0x1d71929b,
+    0x5a626460, 0x93567f6d, 0xd4458996, 0x255a881b, 0x62497ee0,
+    0xab7d65ed, 0xec6e9316, 0xe26455b6, 0xa577a34d, 0x6c43b840,
+    0x2b504ebb, 0x70563500, 0x3745c3fb, 0xfe71d8f6, 0xb9622e0d,
+    0xb768e8ad, 0xf07b1e56, 0x394f055b, 0x7e5cf3a0, 0xc5f6e21b,
+    0x82e514e0, 0x4bd10fed, 0x0cc2f916, 0x02c83fb6, 0x45dbc94d,
+    0x8cefd240, 0xcbfc24bb, 0x90fa5f00, 0xd7e9a9fb, 0x1eddb2f6,
+    0x59ce440d, 0x57c482ad, 0x10d77456, 0xd9e36f5b, 0x9ef099a0,
+    0x6fef982d, 0x28fc6ed6, 0xe1c875db, 0xa6db8320, 0xa8d14580,
+    0xefc2b37b, 0x26f6a876, 0x61e55e8d, 0x3ae32536, 0x7df0d3cd,
+    0xb4c4c8c0, 0xf3d73e3b, 0xfdddf89b, 0xbace0e60, 0x73fa156d,
+    0x34e9e396, 0x4ab51036, 0x0da6e6cd, 0xc492fdc0, 0x83810b3b,
+    0x8d8bcd9b, 0xca983b60, 0x03ac206d, 0x44bfd696, 0x1fb9ad2d,
+    0x58aa5bd6, 0x919e40db, 0xd68db620, 0xd8877080, 0x9f94867b,
+    0x56a09d76, 0x11b36b8d, 0xe0ac6a00, 0xa7bf9cfb, 0x6e8b87f6,
+    0x2998710d, 0x2792b7ad, 0x60814156, 0xa9b55a5b, 0xeea6aca0,
+    0xb5a0d71b, 0xf2b321e0, 0x3b873aed, 0x7c94cc16, 0x729e0ab6,
+    0x358dfc4d, 0xfcb9e740, 0xbbaa11bb, 0x509cc277, 0x178f348c,
+    0xdebb2f81, 0x99a8d97a, 0x97a21fda, 0xd0b1e921, 0x1985f22c,
+    0x5e9604d7, 0x05907f6c, 0x42838997, 0x8bb7929a, 0xcca46461,
+    0xc2aea2c1, 0x85bd543a, 0x4c894f37, 0x0b9ab9cc, 0xfa85b841,
+    0xbd964eba, 0x74a255b7, 0x33b1a34c, 0x3dbb65ec, 0x7aa89317,
+    0xb39c881a, 0xf48f7ee1, 0xaf89055a, 0xe89af3a1, 0x21aee8ac,
+    0x66bd1e57, 0x68b7d8f7, 0x2fa42e0c, 0xe6903501, 0xa183c3fa,
+    0xdfdf305a, 0x98ccc6a1, 0x51f8ddac, 0x16eb2b57, 0x18e1edf7,
+    0x5ff21b0c, 0x96c60001, 0xd1d5f6fa, 0x8ad38d41, 0xcdc07bba,
+    0x04f460b7, 0x43e7964c, 0x4ded50ec, 0x0afea617, 0xc3cabd1a,
+    0x84d94be1, 0x75c64a6c, 0x32d5bc97, 0xfbe1a79a, 0xbcf25161,
+    0xb2f897c1, 0xf5eb613a, 0x3cdf7a37, 0x7bcc8ccc, 0x20caf777,
+    0x67d9018c, 0xaeed1a81, 0xe9feec7a, 0xe7f42ada, 0xa0e7dc21,
+    0x69d3c72c, 0x2ec031d7, 0x956a206c, 0xd279d697, 0x1b4dcd9a,
+    0x5c5e3b61, 0x5254fdc1, 0x15470b3a, 0xdc731037, 0x9b60e6cc,
+    0xc0669d77, 0x87756b8c, 0x4e417081, 0x0952867a, 0x075840da,
+    0x404bb621, 0x897fad2c, 0xce6c5bd7, 0x3f735a5a, 0x7860aca1,
+    0xb154b7ac, 0xf6474157, 0xf84d87f7, 0xbf5e710c, 0x766a6a01,
+    0x31799cfa, 0x6a7fe741, 0x2d6c11ba, 0xe4580ab7, 0xa34bfc4c,
+    0xad413aec, 0xea52cc17, 0x2366d71a, 0x647521e1, 0x1a29d241,
+    0x5d3a24ba, 0x940e3fb7, 0xd31dc94c, 0xdd170fec, 0x9a04f917,
+    0x5330e21a, 0x142314e1, 0x4f256f5a, 0x083699a1, 0xc10282ac,
+    0x86117457, 0x881bb2f7, 0xcf08440c, 0x063c5f01, 0x412fa9fa,
+    0xb030a877, 0xf7235e8c, 0x3e174581, 0x7904b37a, 0x770e75da,
+    0x301d8321, 0xf929982c, 0xbe3a6ed7, 0xe53c156c, 0xa22fe397,
+    0x6b1bf89a, 0x2c080e61, 0x2202c8c1, 0x65113e3a, 0xac252537,
+    0xeb36d3cc},
+   {0x00000000, 0xa13984ee, 0x99020f9d, 0x383b8b73, 0xe975197b,
+    0x484c9d95, 0x707716e6, 0xd14e9208, 0x099b34b7, 0xa8a2b059,
+    0x90993b2a, 0x31a0bfc4, 0xe0ee2dcc, 0x41d7a922, 0x79ec2251,
+    0xd8d5a6bf, 0x1336696e, 0xb20fed80, 0x8a3466f3, 0x2b0de21d,
+    0xfa437015, 0x5b7af4fb, 0x63417f88, 0xc278fb66, 0x1aad5dd9,
+    0xbb94d937, 0x83af5244, 0x2296d6aa, 0xf3d844a2, 0x52e1c04c,
+    0x6ada4b3f, 0xcbe3cfd1, 0x266cd2dc, 0x87555632, 0xbf6edd41,
+    0x1e5759af, 0xcf19cba7, 0x6e204f49, 0x561bc43a, 0xf72240d4,
+    0x2ff7e66b, 0x8ece6285, 0xb6f5e9f6, 0x17cc6d18, 0xc682ff10,
+    0x67bb7bfe, 0x5f80f08d, 0xfeb97463, 0x355abbb2, 0x94633f5c,
+    0xac58b42f, 0x0d6130c1, 0xdc2fa2c9, 0x7d162627, 0x452dad54,
+    0xe41429ba, 0x3cc18f05, 0x9df80beb, 0xa5c38098, 0x04fa0476,
+    0xd5b4967e, 0x748d1290, 0x4cb699e3, 0xed8f1d0d, 0x4cd9a5b8,
+    0xede02156, 0xd5dbaa25, 0x74e22ecb, 0xa5acbcc3, 0x0495382d,
+    0x3caeb35e, 0x9d9737b0, 0x4542910f, 0xe47b15e1, 0xdc409e92,
+    0x7d791a7c, 0xac378874, 0x0d0e0c9a, 0x353587e9, 0x940c0307,
+    0x5fefccd6, 0xfed64838, 0xc6edc34b, 0x67d447a5, 0xb69ad5ad,
+    0x17a35143, 0x2f98da30, 0x8ea15ede, 0x5674f861, 0xf74d7c8f,
+    0xcf76f7fc, 0x6e4f7312, 0xbf01e11a, 0x1e3865f4, 0x2603ee87,
+    0x873a6a69, 0x6ab57764, 0xcb8cf38a, 0xf3b778f9, 0x528efc17,
+    0x83c06e1f, 0x22f9eaf1, 0x1ac26182, 0xbbfbe56c, 0x632e43d3,
+    0xc217c73d, 0xfa2c4c4e, 0x5b15c8a0, 0x8a5b5aa8, 0x2b62de46,
+    0x13595535, 0xb260d1db, 0x79831e0a, 0xd8ba9ae4, 0xe0811197,
+    0x41b89579, 0x90f60771, 0x31cf839f, 0x09f408ec, 0xa8cd8c02,
+    0x70182abd, 0xd121ae53, 0xe91a2520, 0x4823a1ce, 0x996d33c6,
+    0x3854b728, 0x006f3c5b, 0xa156b8b5, 0x99b34b70, 0x388acf9e,
+    0x00b144ed, 0xa188c003, 0x70c6520b, 0xd1ffd6e5, 0xe9c45d96,
+    0x48fdd978, 0x90287fc7, 0x3111fb29, 0x092a705a, 0xa813f4b4,
+    0x795d66bc, 0xd864e252, 0xe05f6921, 0x4166edcf, 0x8a85221e,
+    0x2bbca6f0, 0x13872d83, 0xb2bea96d, 0x63f03b65, 0xc2c9bf8b,
+    0xfaf234f8, 0x5bcbb016, 0x831e16a9, 0x22279247, 0x1a1c1934,
+    0xbb259dda, 0x6a6b0fd2, 0xcb528b3c, 0xf369004f, 0x525084a1,
+    0xbfdf99ac, 0x1ee61d42, 0x26dd9631, 0x87e412df, 0x56aa80d7,
+    0xf7930439, 0xcfa88f4a, 0x6e910ba4, 0xb644ad1b, 0x177d29f5,
+    0x2f46a286, 0x8e7f2668, 0x5f31b460, 0xfe08308e, 0xc633bbfd,
+    0x670a3f13, 0xace9f0c2, 0x0dd0742c, 0x35ebff5f, 0x94d27bb1,
+    0x459ce9b9, 0xe4a56d57, 0xdc9ee624, 0x7da762ca, 0xa572c475,
+    0x044b409b, 0x3c70cbe8, 0x9d494f06, 0x4c07dd0e, 0xed3e59e0,
+    0xd505d293, 0x743c567d, 0xd56aeec8, 0x74536a26, 0x4c68e155,
+    0xed5165bb, 0x3c1ff7b3, 0x9d26735d, 0xa51df82e, 0x04247cc0,
+    0xdcf1da7f, 0x7dc85e91, 0x45f3d5e2, 0xe4ca510c, 0x3584c304,
+    0x94bd47ea, 0xac86cc99, 0x0dbf4877, 0xc65c87a6, 0x67650348,
+    0x5f5e883b, 0xfe670cd5, 0x2f299edd, 0x8e101a33, 0xb62b9140,
+    0x171215ae, 0xcfc7b311, 0x6efe37ff, 0x56c5bc8c, 0xf7fc3862,
+    0x26b2aa6a, 0x878b2e84, 0xbfb0a5f7, 0x1e892119, 0xf3063c14,
+    0x523fb8fa, 0x6a043389, 0xcb3db767, 0x1a73256f, 0xbb4aa181,
+    0x83712af2, 0x2248ae1c, 0xfa9d08a3, 0x5ba48c4d, 0x639f073e,
+    0xc2a683d0, 0x13e811d8, 0xb2d19536, 0x8aea1e45, 0x2bd39aab,
+    0xe030557a, 0x4109d194, 0x79325ae7, 0xd80bde09, 0x09454c01,
+    0xa87cc8ef, 0x9047439c, 0x317ec772, 0xe9ab61cd, 0x4892e523,
+    0x70a96e50, 0xd190eabe, 0x00de78b6, 0xa1e7fc58, 0x99dc772b,
+    0x38e5f3c5},
+   {0x00000000, 0xe81790a1, 0x0b5e2703, 0xe349b7a2, 0x16bc4e06,
+    0xfeabdea7, 0x1de26905, 0xf5f5f9a4, 0x2d789c0c, 0xc56f0cad,
+    0x2626bb0f, 0xce312bae, 0x3bc4d20a, 0xd3d342ab, 0x309af509,
+    0xd88d65a8, 0x5af13818, 0xb2e6a8b9, 0x51af1f1b, 0xb9b88fba,
+    0x4c4d761e, 0xa45ae6bf, 0x4713511d, 0xaf04c1bc, 0x7789a414,
+    0x9f9e34b5, 0x7cd78317, 0x94c013b6, 0x6135ea12, 0x89227ab3,
+    0x6a6bcd11, 0x827c5db0, 0xb5e27030, 0x5df5e091, 0xbebc5733,
+    0x56abc792, 0xa35e3e36, 0x4b49ae97, 0xa8001935, 0x40178994,
+    0x989aec3c, 0x708d7c9d, 0x93c4cb3f, 0x7bd35b9e, 0x8e26a23a,
+    0x6631329b, 0x85788539, 0x6d6f1598, 0xef134828, 0x0704d889,
+    0xe44d6f2b, 0x0c5aff8a, 0xf9af062e, 0x11b8968f, 0xf2f1212d,
+    0x1ae6b18c, 0xc26bd424, 0x2a7c4485, 0xc935f327, 0x21226386,
+    0xd4d79a22, 0x3cc00a83, 0xdf89bd21, 0x379e2d80, 0xb0b5e621,
+    0x58a27680, 0xbbebc122, 0x53fc5183, 0xa609a827, 0x4e1e3886,
+    0xad578f24, 0x45401f85, 0x9dcd7a2d, 0x75daea8c, 0x96935d2e,
+    0x7e84cd8f, 0x8b71342b, 0x6366a48a, 0x802f1328, 0x68388389,
+    0xea44de39, 0x02534e98, 0xe11af93a, 0x090d699b, 0xfcf8903f,
+    0x14ef009e, 0xf7a6b73c, 0x1fb1279d, 0xc73c4235, 0x2f2bd294,
+    0xcc626536, 0x2475f597, 0xd1800c33, 0x39979c92, 0xdade2b30,
+    0x32c9bb91, 0x05579611, 0xed4006b0, 0x0e09b112, 0xe61e21b3,
+    0x13ebd817, 0xfbfc48b6, 0x18b5ff14, 0xf0a26fb5, 0x282f0a1d,
+    0xc0389abc, 0x23712d1e, 0xcb66bdbf, 0x3e93441b, 0xd684d4ba,
+    0x35cd6318, 0xdddaf3b9, 0x5fa6ae09, 0xb7b13ea8, 0x54f8890a,
+    0xbcef19ab, 0x491ae00f, 0xa10d70ae, 0x4244c70c, 0xaa5357ad,
+    0x72de3205, 0x9ac9a2a4, 0x79801506, 0x919785a7, 0x64627c03,
+    0x8c75eca2, 0x6f3c5b00, 0x872bcba1, 0xba1aca03, 0x520d5aa2,
+    0xb144ed00, 0x59537da1, 0xaca68405, 0x44b114a4, 0xa7f8a306,
+    0x4fef33a7, 0x9762560f, 0x7f75c6ae, 0x9c3c710c, 0x742be1ad,
+    0x81de1809, 0x69c988a8, 0x8a803f0a, 0x6297afab, 0xe0ebf21b,
+    0x08fc62ba, 0xebb5d518, 0x03a245b9, 0xf657bc1d, 0x1e402cbc,
+    0xfd099b1e, 0x151e0bbf, 0xcd936e17, 0x2584feb6, 0xc6cd4914,
+    0x2edad9b5, 0xdb2f2011, 0x3338b0b0, 0xd0710712, 0x386697b3,
+    0x0ff8ba33, 0xe7ef2a92, 0x04a69d30, 0xecb10d91, 0x1944f435,
+    0xf1536494, 0x121ad336, 0xfa0d4397, 0x2280263f, 0xca97b69e,
+    0x29de013c, 0xc1c9919d, 0x343c6839, 0xdc2bf898, 0x3f624f3a,
+    0xd775df9b, 0x5509822b, 0xbd1e128a, 0x5e57a528, 0xb6403589,
+    0x43b5cc2d, 0xaba25c8c, 0x48ebeb2e, 0xa0fc7b8f, 0x78711e27,
+    0x90668e86, 0x732f3924, 0x9b38a985, 0x6ecd5021, 0x86dac080,
+    0x65937722, 0x8d84e783, 0x0aaf2c22, 0xe2b8bc83, 0x01f10b21,
+    0xe9e69b80, 0x1c136224, 0xf404f285, 0x174d4527, 0xff5ad586,
+    0x27d7b02e, 0xcfc0208f, 0x2c89972d, 0xc49e078c, 0x316bfe28,
+    0xd97c6e89, 0x3a35d92b, 0xd222498a, 0x505e143a, 0xb849849b,
+    0x5b003339, 0xb317a398, 0x46e25a3c, 0xaef5ca9d, 0x4dbc7d3f,
+    0xa5abed9e, 0x7d268836, 0x95311897, 0x7678af35, 0x9e6f3f94,
+    0x6b9ac630, 0x838d5691, 0x60c4e133, 0x88d37192, 0xbf4d5c12,
+    0x575accb3, 0xb4137b11, 0x5c04ebb0, 0xa9f11214, 0x41e682b5,
+    0xa2af3517, 0x4ab8a5b6, 0x9235c01e, 0x7a2250bf, 0x996be71d,
+    0x717c77bc, 0x84898e18, 0x6c9e1eb9, 0x8fd7a91b, 0x67c039ba,
+    0xe5bc640a, 0x0dabf4ab, 0xeee24309, 0x06f5d3a8, 0xf3002a0c,
+    0x1b17baad, 0xf85e0d0f, 0x10499dae, 0xc8c4f806, 0x20d368a7,
+    0xc39adf05, 0x2b8d4fa4, 0xde78b600, 0x366f26a1, 0xd5269103,
+    0x3d3101a2}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x0000000000000000, 0xa19017e800000000, 0x03275e0b00000000,
+    0xa2b749e300000000, 0x064ebc1600000000, 0xa7deabfe00000000,
+    0x0569e21d00000000, 0xa4f9f5f500000000, 0x0c9c782d00000000,
+    0xad0c6fc500000000, 0x0fbb262600000000, 0xae2b31ce00000000,
+    0x0ad2c43b00000000, 0xab42d3d300000000, 0x09f59a3000000000,
+    0xa8658dd800000000, 0x1838f15a00000000, 0xb9a8e6b200000000,
+    0x1b1faf5100000000, 0xba8fb8b900000000, 0x1e764d4c00000000,
+    0xbfe65aa400000000, 0x1d51134700000000, 0xbcc104af00000000,
+    0x14a4897700000000, 0xb5349e9f00000000, 0x1783d77c00000000,
+    0xb613c09400000000, 0x12ea356100000000, 0xb37a228900000000,
+    0x11cd6b6a00000000, 0xb05d7c8200000000, 0x3070e2b500000000,
+    0x91e0f55d00000000, 0x3357bcbe00000000, 0x92c7ab5600000000,
+    0x363e5ea300000000, 0x97ae494b00000000, 0x351900a800000000,
+    0x9489174000000000, 0x3cec9a9800000000, 0x9d7c8d7000000000,
+    0x3fcbc49300000000, 0x9e5bd37b00000000, 0x3aa2268e00000000,
+    0x9b32316600000000, 0x3985788500000000, 0x98156f6d00000000,
+    0x284813ef00000000, 0x89d8040700000000, 0x2b6f4de400000000,
+    0x8aff5a0c00000000, 0x2e06aff900000000, 0x8f96b81100000000,
+    0x2d21f1f200000000, 0x8cb1e61a00000000, 0x24d46bc200000000,
+    0x85447c2a00000000, 0x27f335c900000000, 0x8663222100000000,
+    0x229ad7d400000000, 0x830ac03c00000000, 0x21bd89df00000000,
+    0x802d9e3700000000, 0x21e6b5b000000000, 0x8076a25800000000,
+    0x22c1ebbb00000000, 0x8351fc5300000000, 0x27a809a600000000,
+    0x86381e4e00000000, 0x248f57ad00000000, 0x851f404500000000,
+    0x2d7acd9d00000000, 0x8ceada7500000000, 0x2e5d939600000000,
+    0x8fcd847e00000000, 0x2b34718b00000000, 0x8aa4666300000000,
+    0x28132f8000000000, 0x8983386800000000, 0x39de44ea00000000,
+    0x984e530200000000, 0x3af91ae100000000, 0x9b690d0900000000,
+    0x3f90f8fc00000000, 0x9e00ef1400000000, 0x3cb7a6f700000000,
+    0x9d27b11f00000000, 0x35423cc700000000, 0x94d22b2f00000000,
+    0x366562cc00000000, 0x97f5752400000000, 0x330c80d100000000,
+    0x929c973900000000, 0x302bdeda00000000, 0x91bbc93200000000,
+    0x1196570500000000, 0xb00640ed00000000, 0x12b1090e00000000,
+    0xb3211ee600000000, 0x17d8eb1300000000, 0xb648fcfb00000000,
+    0x14ffb51800000000, 0xb56fa2f000000000, 0x1d0a2f2800000000,
+    0xbc9a38c000000000, 0x1e2d712300000000, 0xbfbd66cb00000000,
+    0x1b44933e00000000, 0xbad484d600000000, 0x1863cd3500000000,
+    0xb9f3dadd00000000, 0x09aea65f00000000, 0xa83eb1b700000000,
+    0x0a89f85400000000, 0xab19efbc00000000, 0x0fe01a4900000000,
+    0xae700da100000000, 0x0cc7444200000000, 0xad5753aa00000000,
+    0x0532de7200000000, 0xa4a2c99a00000000, 0x0615807900000000,
+    0xa785979100000000, 0x037c626400000000, 0xa2ec758c00000000,
+    0x005b3c6f00000000, 0xa1cb2b8700000000, 0x03ca1aba00000000,
+    0xa25a0d5200000000, 0x00ed44b100000000, 0xa17d535900000000,
+    0x0584a6ac00000000, 0xa414b14400000000, 0x06a3f8a700000000,
+    0xa733ef4f00000000, 0x0f56629700000000, 0xaec6757f00000000,
+    0x0c713c9c00000000, 0xade12b7400000000, 0x0918de8100000000,
+    0xa888c96900000000, 0x0a3f808a00000000, 0xabaf976200000000,
+    0x1bf2ebe000000000, 0xba62fc0800000000, 0x18d5b5eb00000000,
+    0xb945a20300000000, 0x1dbc57f600000000, 0xbc2c401e00000000,
+    0x1e9b09fd00000000, 0xbf0b1e1500000000, 0x176e93cd00000000,
+    0xb6fe842500000000, 0x1449cdc600000000, 0xb5d9da2e00000000,
+    0x11202fdb00000000, 0xb0b0383300000000, 0x120771d000000000,
+    0xb397663800000000, 0x33baf80f00000000, 0x922aefe700000000,
+    0x309da60400000000, 0x910db1ec00000000, 0x35f4441900000000,
+    0x946453f100000000, 0x36d31a1200000000, 0x97430dfa00000000,
+    0x3f26802200000000, 0x9eb697ca00000000, 0x3c01de2900000000,
+    0x9d91c9c100000000, 0x39683c3400000000, 0x98f82bdc00000000,
+    0x3a4f623f00000000, 0x9bdf75d700000000, 0x2b82095500000000,
+    0x8a121ebd00000000, 0x28a5575e00000000, 0x893540b600000000,
+    0x2dccb54300000000, 0x8c5ca2ab00000000, 0x2eebeb4800000000,
+    0x8f7bfca000000000, 0x271e717800000000, 0x868e669000000000,
+    0x24392f7300000000, 0x85a9389b00000000, 0x2150cd6e00000000,
+    0x80c0da8600000000, 0x2277936500000000, 0x83e7848d00000000,
+    0x222caf0a00000000, 0x83bcb8e200000000, 0x210bf10100000000,
+    0x809be6e900000000, 0x2462131c00000000, 0x85f204f400000000,
+    0x27454d1700000000, 0x86d55aff00000000, 0x2eb0d72700000000,
+    0x8f20c0cf00000000, 0x2d97892c00000000, 0x8c079ec400000000,
+    0x28fe6b3100000000, 0x896e7cd900000000, 0x2bd9353a00000000,
+    0x8a4922d200000000, 0x3a145e5000000000, 0x9b8449b800000000,
+    0x3933005b00000000, 0x98a317b300000000, 0x3c5ae24600000000,
+    0x9dcaf5ae00000000, 0x3f7dbc4d00000000, 0x9eedaba500000000,
+    0x3688267d00000000, 0x9718319500000000, 0x35af787600000000,
+    0x943f6f9e00000000, 0x30c69a6b00000000, 0x91568d8300000000,
+    0x33e1c46000000000, 0x9271d38800000000, 0x125c4dbf00000000,
+    0xb3cc5a5700000000, 0x117b13b400000000, 0xb0eb045c00000000,
+    0x1412f1a900000000, 0xb582e64100000000, 0x1735afa200000000,
+    0xb6a5b84a00000000, 0x1ec0359200000000, 0xbf50227a00000000,
+    0x1de76b9900000000, 0xbc777c7100000000, 0x188e898400000000,
+    0xb91e9e6c00000000, 0x1ba9d78f00000000, 0xba39c06700000000,
+    0x0a64bce500000000, 0xabf4ab0d00000000, 0x0943e2ee00000000,
+    0xa8d3f50600000000, 0x0c2a00f300000000, 0xadba171b00000000,
+    0x0f0d5ef800000000, 0xae9d491000000000, 0x06f8c4c800000000,
+    0xa768d32000000000, 0x05df9ac300000000, 0xa44f8d2b00000000,
+    0x00b678de00000000, 0xa1266f3600000000, 0x039126d500000000,
+    0xa201313d00000000},
+   {0x0000000000000000, 0xee8439a100000000, 0x9d0f029900000000,
+    0x738b3b3800000000, 0x7b1975e900000000, 0x959d4c4800000000,
+    0xe616777000000000, 0x08924ed100000000, 0xb7349b0900000000,
+    0x59b0a2a800000000, 0x2a3b999000000000, 0xc4bfa03100000000,
+    0xcc2deee000000000, 0x22a9d74100000000, 0x5122ec7900000000,
+    0xbfa6d5d800000000, 0x6e69361300000000, 0x80ed0fb200000000,
+    0xf366348a00000000, 0x1de20d2b00000000, 0x157043fa00000000,
+    0xfbf47a5b00000000, 0x887f416300000000, 0x66fb78c200000000,
+    0xd95dad1a00000000, 0x37d994bb00000000, 0x4452af8300000000,
+    0xaad6962200000000, 0xa244d8f300000000, 0x4cc0e15200000000,
+    0x3f4bda6a00000000, 0xd1cfe3cb00000000, 0xdcd26c2600000000,
+    0x3256558700000000, 0x41dd6ebf00000000, 0xaf59571e00000000,
+    0xa7cb19cf00000000, 0x494f206e00000000, 0x3ac41b5600000000,
+    0xd44022f700000000, 0x6be6f72f00000000, 0x8562ce8e00000000,
+    0xf6e9f5b600000000, 0x186dcc1700000000, 0x10ff82c600000000,
+    0xfe7bbb6700000000, 0x8df0805f00000000, 0x6374b9fe00000000,
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+    0x1c52427700000000, 0xc0bef34a00000000, 0xa48b210c00000000,
+    0x7867903100000000, 0x8f4087da00000000, 0x53ac36e700000000,
+    0x3799e4a100000000, 0xeb75559c00000000, 0xfff3402c00000000,
+    0x231ff11100000000, 0x472a235700000000, 0x9bc6926a00000000,
+    0x2e2079ec00000000, 0xf2ccc8d100000000, 0x96f91a9700000000,
+    0x4a15abaa00000000, 0x5e93be1a00000000, 0x827f0f2700000000,
+    0xe64add6100000000, 0x3aa66c5c00000000, 0x920604d900000000,
+    0x4eeab5e400000000, 0x2adf67a200000000, 0xf633d69f00000000,
+    0xe2b5c32f00000000, 0x3e59721200000000, 0x5a6ca05400000000,
+    0x8680116900000000, 0x3366faef00000000, 0xef8a4bd200000000,
+    0x8bbf999400000000, 0x575328a900000000, 0x43d53d1900000000,
+    0x9f398c2400000000, 0xfb0c5e6200000000, 0x27e0ef5f00000000,
+    0xd0c7f8b400000000, 0x0c2b498900000000, 0x681e9bcf00000000,
+    0xb4f22af200000000, 0xa0743f4200000000, 0x7c988e7f00000000,
+    0x18ad5c3900000000, 0xc441ed0400000000, 0x71a7068200000000,
+    0xad4bb7bf00000000, 0xc97e65f900000000, 0x1592d4c400000000,
+    0x0114c17400000000, 0xddf8704900000000, 0xb9cda20f00000000,
+    0x6521133200000000, 0x1684fd0200000000, 0xca684c3f00000000,
+    0xae5d9e7900000000, 0x72b12f4400000000, 0x66373af400000000,
+    0xbadb8bc900000000, 0xdeee598f00000000, 0x0202e8b200000000,
+    0xb7e4033400000000, 0x6b08b20900000000, 0x0f3d604f00000000,
+    0xd3d1d17200000000, 0xc757c4c200000000, 0x1bbb75ff00000000,
+    0x7f8ea7b900000000, 0xa362168400000000, 0x5445016f00000000,
+    0x88a9b05200000000, 0xec9c621400000000, 0x3070d32900000000,
+    0x24f6c69900000000, 0xf81a77a400000000, 0x9c2fa5e200000000,
+    0x40c314df00000000, 0xf525ff5900000000, 0x29c94e6400000000,
+    0x4dfc9c2200000000, 0x91102d1f00000000, 0x859638af00000000,
+    0x597a899200000000, 0x3d4f5bd400000000, 0xe1a3eae900000000,
+    0xdb0586b500000000, 0x07e9378800000000, 0x63dce5ce00000000,
+    0xbf3054f300000000, 0xabb6414300000000, 0x775af07e00000000,
+    0x136f223800000000, 0xcf83930500000000, 0x7a65788300000000,
+    0xa689c9be00000000, 0xc2bc1bf800000000, 0x1e50aac500000000,
+    0x0ad6bf7500000000, 0xd63a0e4800000000, 0xb20fdc0e00000000,
+    0x6ee36d3300000000, 0x99c47ad800000000, 0x4528cbe500000000,
+    0x211d19a300000000, 0xfdf1a89e00000000, 0xe977bd2e00000000,
+    0x359b0c1300000000, 0x51aede5500000000, 0x8d426f6800000000,
+    0x38a484ee00000000, 0xe44835d300000000, 0x807de79500000000,
+    0x5c9156a800000000, 0x4817431800000000, 0x94fbf22500000000,
+    0xf0ce206300000000, 0x2c22915e00000000, 0x5f877f6e00000000,
+    0x836bce5300000000, 0xe75e1c1500000000, 0x3bb2ad2800000000,
+    0x2f34b89800000000, 0xf3d809a500000000, 0x97eddbe300000000,
+    0x4b016ade00000000, 0xfee7815800000000, 0x220b306500000000,
+    0x463ee22300000000, 0x9ad2531e00000000, 0x8e5446ae00000000,
+    0x52b8f79300000000, 0x368d25d500000000, 0xea6194e800000000,
+    0x1d46830300000000, 0xc1aa323e00000000, 0xa59fe07800000000,
+    0x7973514500000000, 0x6df544f500000000, 0xb119f5c800000000,
+    0xd52c278e00000000, 0x09c096b300000000, 0xbc267d3500000000,
+    0x60cacc0800000000, 0x04ff1e4e00000000, 0xd813af7300000000,
+    0xcc95bac300000000, 0x10790bfe00000000, 0x744cd9b800000000,
+    0xa8a0688500000000}};
+
+#else /* W == 4 */
+
+local const z_crc_t FAR crc_braid_table[][256] = {
+   {0x00000000, 0x81256527, 0xd93bcc0f, 0x581ea928, 0x69069e5f,
+    0xe823fb78, 0xb03d5250, 0x31183777, 0xd20d3cbe, 0x53285999,
+    0x0b36f0b1, 0x8a139596, 0xbb0ba2e1, 0x3a2ec7c6, 0x62306eee,
+    0xe3150bc9, 0x7f6b7f3d, 0xfe4e1a1a, 0xa650b332, 0x2775d615,
+    0x166de162, 0x97488445, 0xcf562d6d, 0x4e73484a, 0xad664383,
+    0x2c4326a4, 0x745d8f8c, 0xf578eaab, 0xc460dddc, 0x4545b8fb,
+    0x1d5b11d3, 0x9c7e74f4, 0xfed6fe7a, 0x7ff39b5d, 0x27ed3275,
+    0xa6c85752, 0x97d06025, 0x16f50502, 0x4eebac2a, 0xcfcec90d,
+    0x2cdbc2c4, 0xadfea7e3, 0xf5e00ecb, 0x74c56bec, 0x45dd5c9b,
+    0xc4f839bc, 0x9ce69094, 0x1dc3f5b3, 0x81bd8147, 0x0098e460,
+    0x58864d48, 0xd9a3286f, 0xe8bb1f18, 0x699e7a3f, 0x3180d317,
+    0xb0a5b630, 0x53b0bdf9, 0xd295d8de, 0x8a8b71f6, 0x0bae14d1,
+    0x3ab623a6, 0xbb934681, 0xe38defa9, 0x62a88a8e, 0x26dcfab5,
+    0xa7f99f92, 0xffe736ba, 0x7ec2539d, 0x4fda64ea, 0xceff01cd,
+    0x96e1a8e5, 0x17c4cdc2, 0xf4d1c60b, 0x75f4a32c, 0x2dea0a04,
+    0xaccf6f23, 0x9dd75854, 0x1cf23d73, 0x44ec945b, 0xc5c9f17c,
+    0x59b78588, 0xd892e0af, 0x808c4987, 0x01a92ca0, 0x30b11bd7,
+    0xb1947ef0, 0xe98ad7d8, 0x68afb2ff, 0x8bbab936, 0x0a9fdc11,
+    0x52817539, 0xd3a4101e, 0xe2bc2769, 0x6399424e, 0x3b87eb66,
+    0xbaa28e41, 0xd80a04cf, 0x592f61e8, 0x0131c8c0, 0x8014ade7,
+    0xb10c9a90, 0x3029ffb7, 0x6837569f, 0xe91233b8, 0x0a073871,
+    0x8b225d56, 0xd33cf47e, 0x52199159, 0x6301a62e, 0xe224c309,
+    0xba3a6a21, 0x3b1f0f06, 0xa7617bf2, 0x26441ed5, 0x7e5ab7fd,
+    0xff7fd2da, 0xce67e5ad, 0x4f42808a, 0x175c29a2, 0x96794c85,
+    0x756c474c, 0xf449226b, 0xac578b43, 0x2d72ee64, 0x1c6ad913,
+    0x9d4fbc34, 0xc551151c, 0x4474703b, 0x4db9f56a, 0xcc9c904d,
+    0x94823965, 0x15a75c42, 0x24bf6b35, 0xa59a0e12, 0xfd84a73a,
+    0x7ca1c21d, 0x9fb4c9d4, 0x1e91acf3, 0x468f05db, 0xc7aa60fc,
+    0xf6b2578b, 0x779732ac, 0x2f899b84, 0xaeacfea3, 0x32d28a57,
+    0xb3f7ef70, 0xebe94658, 0x6acc237f, 0x5bd41408, 0xdaf1712f,
+    0x82efd807, 0x03cabd20, 0xe0dfb6e9, 0x61fad3ce, 0x39e47ae6,
+    0xb8c11fc1, 0x89d928b6, 0x08fc4d91, 0x50e2e4b9, 0xd1c7819e,
+    0xb36f0b10, 0x324a6e37, 0x6a54c71f, 0xeb71a238, 0xda69954f,
+    0x5b4cf068, 0x03525940, 0x82773c67, 0x616237ae, 0xe0475289,
+    0xb859fba1, 0x397c9e86, 0x0864a9f1, 0x8941ccd6, 0xd15f65fe,
+    0x507a00d9, 0xcc04742d, 0x4d21110a, 0x153fb822, 0x941add05,
+    0xa502ea72, 0x24278f55, 0x7c39267d, 0xfd1c435a, 0x1e094893,
+    0x9f2c2db4, 0xc732849c, 0x4617e1bb, 0x770fd6cc, 0xf62ab3eb,
+    0xae341ac3, 0x2f117fe4, 0x6b650fdf, 0xea406af8, 0xb25ec3d0,
+    0x337ba6f7, 0x02639180, 0x8346f4a7, 0xdb585d8f, 0x5a7d38a8,
+    0xb9683361, 0x384d5646, 0x6053ff6e, 0xe1769a49, 0xd06ead3e,
+    0x514bc819, 0x09556131, 0x88700416, 0x140e70e2, 0x952b15c5,
+    0xcd35bced, 0x4c10d9ca, 0x7d08eebd, 0xfc2d8b9a, 0xa43322b2,
+    0x25164795, 0xc6034c5c, 0x4726297b, 0x1f388053, 0x9e1de574,
+    0xaf05d203, 0x2e20b724, 0x763e1e0c, 0xf71b7b2b, 0x95b3f1a5,
+    0x14969482, 0x4c883daa, 0xcdad588d, 0xfcb56ffa, 0x7d900add,
+    0x258ea3f5, 0xa4abc6d2, 0x47becd1b, 0xc69ba83c, 0x9e850114,
+    0x1fa06433, 0x2eb85344, 0xaf9d3663, 0xf7839f4b, 0x76a6fa6c,
+    0xead88e98, 0x6bfdebbf, 0x33e34297, 0xb2c627b0, 0x83de10c7,
+    0x02fb75e0, 0x5ae5dcc8, 0xdbc0b9ef, 0x38d5b226, 0xb9f0d701,
+    0xe1ee7e29, 0x60cb1b0e, 0x51d32c79, 0xd0f6495e, 0x88e8e076,
+    0x09cd8551},
+   {0x00000000, 0x9b73ead4, 0xed96d3e9, 0x76e5393d, 0x005ca193,
+    0x9b2f4b47, 0xedca727a, 0x76b998ae, 0x00b94326, 0x9bcaa9f2,
+    0xed2f90cf, 0x765c7a1b, 0x00e5e2b5, 0x9b960861, 0xed73315c,
+    0x7600db88, 0x0172864c, 0x9a016c98, 0xece455a5, 0x7797bf71,
+    0x012e27df, 0x9a5dcd0b, 0xecb8f436, 0x77cb1ee2, 0x01cbc56a,
+    0x9ab82fbe, 0xec5d1683, 0x772efc57, 0x019764f9, 0x9ae48e2d,
+    0xec01b710, 0x77725dc4, 0x02e50c98, 0x9996e64c, 0xef73df71,
+    0x740035a5, 0x02b9ad0b, 0x99ca47df, 0xef2f7ee2, 0x745c9436,
+    0x025c4fbe, 0x992fa56a, 0xefca9c57, 0x74b97683, 0x0200ee2d,
+    0x997304f9, 0xef963dc4, 0x74e5d710, 0x03978ad4, 0x98e46000,
+    0xee01593d, 0x7572b3e9, 0x03cb2b47, 0x98b8c193, 0xee5df8ae,
+    0x752e127a, 0x032ec9f2, 0x985d2326, 0xeeb81a1b, 0x75cbf0cf,
+    0x03726861, 0x980182b5, 0xeee4bb88, 0x7597515c, 0x05ca1930,
+    0x9eb9f3e4, 0xe85ccad9, 0x732f200d, 0x0596b8a3, 0x9ee55277,
+    0xe8006b4a, 0x7373819e, 0x05735a16, 0x9e00b0c2, 0xe8e589ff,
+    0x7396632b, 0x052ffb85, 0x9e5c1151, 0xe8b9286c, 0x73cac2b8,
+    0x04b89f7c, 0x9fcb75a8, 0xe92e4c95, 0x725da641, 0x04e43eef,
+    0x9f97d43b, 0xe972ed06, 0x720107d2, 0x0401dc5a, 0x9f72368e,
+    0xe9970fb3, 0x72e4e567, 0x045d7dc9, 0x9f2e971d, 0xe9cbae20,
+    0x72b844f4, 0x072f15a8, 0x9c5cff7c, 0xeab9c641, 0x71ca2c95,
+    0x0773b43b, 0x9c005eef, 0xeae567d2, 0x71968d06, 0x0796568e,
+    0x9ce5bc5a, 0xea008567, 0x71736fb3, 0x07caf71d, 0x9cb91dc9,
+    0xea5c24f4, 0x712fce20, 0x065d93e4, 0x9d2e7930, 0xebcb400d,
+    0x70b8aad9, 0x06013277, 0x9d72d8a3, 0xeb97e19e, 0x70e40b4a,
+    0x06e4d0c2, 0x9d973a16, 0xeb72032b, 0x7001e9ff, 0x06b87151,
+    0x9dcb9b85, 0xeb2ea2b8, 0x705d486c, 0x0b943260, 0x90e7d8b4,
+    0xe602e189, 0x7d710b5d, 0x0bc893f3, 0x90bb7927, 0xe65e401a,
+    0x7d2daace, 0x0b2d7146, 0x905e9b92, 0xe6bba2af, 0x7dc8487b,
+    0x0b71d0d5, 0x90023a01, 0xe6e7033c, 0x7d94e9e8, 0x0ae6b42c,
+    0x91955ef8, 0xe77067c5, 0x7c038d11, 0x0aba15bf, 0x91c9ff6b,
+    0xe72cc656, 0x7c5f2c82, 0x0a5ff70a, 0x912c1dde, 0xe7c924e3,
+    0x7cbace37, 0x0a035699, 0x9170bc4d, 0xe7958570, 0x7ce66fa4,
+    0x09713ef8, 0x9202d42c, 0xe4e7ed11, 0x7f9407c5, 0x092d9f6b,
+    0x925e75bf, 0xe4bb4c82, 0x7fc8a656, 0x09c87dde, 0x92bb970a,
+    0xe45eae37, 0x7f2d44e3, 0x0994dc4d, 0x92e73699, 0xe4020fa4,
+    0x7f71e570, 0x0803b8b4, 0x93705260, 0xe5956b5d, 0x7ee68189,
+    0x085f1927, 0x932cf3f3, 0xe5c9cace, 0x7eba201a, 0x08bafb92,
+    0x93c91146, 0xe52c287b, 0x7e5fc2af, 0x08e65a01, 0x9395b0d5,
+    0xe57089e8, 0x7e03633c, 0x0e5e2b50, 0x952dc184, 0xe3c8f8b9,
+    0x78bb126d, 0x0e028ac3, 0x95716017, 0xe394592a, 0x78e7b3fe,
+    0x0ee76876, 0x959482a2, 0xe371bb9f, 0x7802514b, 0x0ebbc9e5,
+    0x95c82331, 0xe32d1a0c, 0x785ef0d8, 0x0f2cad1c, 0x945f47c8,
+    0xe2ba7ef5, 0x79c99421, 0x0f700c8f, 0x9403e65b, 0xe2e6df66,
+    0x799535b2, 0x0f95ee3a, 0x94e604ee, 0xe2033dd3, 0x7970d707,
+    0x0fc94fa9, 0x94baa57d, 0xe25f9c40, 0x792c7694, 0x0cbb27c8,
+    0x97c8cd1c, 0xe12df421, 0x7a5e1ef5, 0x0ce7865b, 0x97946c8f,
+    0xe17155b2, 0x7a02bf66, 0x0c0264ee, 0x97718e3a, 0xe194b707,
+    0x7ae75dd3, 0x0c5ec57d, 0x972d2fa9, 0xe1c81694, 0x7abbfc40,
+    0x0dc9a184, 0x96ba4b50, 0xe05f726d, 0x7b2c98b9, 0x0d950017,
+    0x96e6eac3, 0xe003d3fe, 0x7b70392a, 0x0d70e2a2, 0x96030876,
+    0xe0e6314b, 0x7b95db9f, 0x0d2c4331, 0x965fa9e5, 0xe0ba90d8,
+    0x7bc97a0c},
+   {0x00000000, 0x172864c0, 0x2e50c980, 0x3978ad40, 0x5ca19300,
+    0x4b89f7c0, 0x72f15a80, 0x65d93e40, 0xb9432600, 0xae6b42c0,
+    0x9713ef80, 0x803b8b40, 0xe5e2b500, 0xf2cad1c0, 0xcbb27c80,
+    0xdc9a1840, 0xa9f74a41, 0xbedf2e81, 0x87a783c1, 0x908fe701,
+    0xf556d941, 0xe27ebd81, 0xdb0610c1, 0xcc2e7401, 0x10b46c41,
+    0x079c0881, 0x3ee4a5c1, 0x29ccc101, 0x4c15ff41, 0x5b3d9b81,
+    0x624536c1, 0x756d5201, 0x889f92c3, 0x9fb7f603, 0xa6cf5b43,
+    0xb1e73f83, 0xd43e01c3, 0xc3166503, 0xfa6ec843, 0xed46ac83,
+    0x31dcb4c3, 0x26f4d003, 0x1f8c7d43, 0x08a41983, 0x6d7d27c3,
+    0x7a554303, 0x432dee43, 0x54058a83, 0x2168d882, 0x3640bc42,
+    0x0f381102, 0x181075c2, 0x7dc94b82, 0x6ae12f42, 0x53998202,
+    0x44b1e6c2, 0x982bfe82, 0x8f039a42, 0xb67b3702, 0xa15353c2,
+    0xc48a6d82, 0xd3a20942, 0xeadaa402, 0xfdf2c0c2, 0xca4e23c7,
+    0xdd664707, 0xe41eea47, 0xf3368e87, 0x96efb0c7, 0x81c7d407,
+    0xb8bf7947, 0xaf971d87, 0x730d05c7, 0x64256107, 0x5d5dcc47,
+    0x4a75a887, 0x2fac96c7, 0x3884f207, 0x01fc5f47, 0x16d43b87,
+    0x63b96986, 0x74910d46, 0x4de9a006, 0x5ac1c4c6, 0x3f18fa86,
+    0x28309e46, 0x11483306, 0x066057c6, 0xdafa4f86, 0xcdd22b46,
+    0xf4aa8606, 0xe382e2c6, 0x865bdc86, 0x9173b846, 0xa80b1506,
+    0xbf2371c6, 0x42d1b104, 0x55f9d5c4, 0x6c817884, 0x7ba91c44,
+    0x1e702204, 0x095846c4, 0x3020eb84, 0x27088f44, 0xfb929704,
+    0xecbaf3c4, 0xd5c25e84, 0xc2ea3a44, 0xa7330404, 0xb01b60c4,
+    0x8963cd84, 0x9e4ba944, 0xeb26fb45, 0xfc0e9f85, 0xc57632c5,
+    0xd25e5605, 0xb7876845, 0xa0af0c85, 0x99d7a1c5, 0x8effc505,
+    0x5265dd45, 0x454db985, 0x7c3514c5, 0x6b1d7005, 0x0ec44e45,
+    0x19ec2a85, 0x209487c5, 0x37bce305, 0x4fed41cf, 0x58c5250f,
+    0x61bd884f, 0x7695ec8f, 0x134cd2cf, 0x0464b60f, 0x3d1c1b4f,
+    0x2a347f8f, 0xf6ae67cf, 0xe186030f, 0xd8feae4f, 0xcfd6ca8f,
+    0xaa0ff4cf, 0xbd27900f, 0x845f3d4f, 0x9377598f, 0xe61a0b8e,
+    0xf1326f4e, 0xc84ac20e, 0xdf62a6ce, 0xbabb988e, 0xad93fc4e,
+    0x94eb510e, 0x83c335ce, 0x5f592d8e, 0x4871494e, 0x7109e40e,
+    0x662180ce, 0x03f8be8e, 0x14d0da4e, 0x2da8770e, 0x3a8013ce,
+    0xc772d30c, 0xd05ab7cc, 0xe9221a8c, 0xfe0a7e4c, 0x9bd3400c,
+    0x8cfb24cc, 0xb583898c, 0xa2abed4c, 0x7e31f50c, 0x691991cc,
+    0x50613c8c, 0x4749584c, 0x2290660c, 0x35b802cc, 0x0cc0af8c,
+    0x1be8cb4c, 0x6e85994d, 0x79adfd8d, 0x40d550cd, 0x57fd340d,
+    0x32240a4d, 0x250c6e8d, 0x1c74c3cd, 0x0b5ca70d, 0xd7c6bf4d,
+    0xc0eedb8d, 0xf99676cd, 0xeebe120d, 0x8b672c4d, 0x9c4f488d,
+    0xa537e5cd, 0xb21f810d, 0x85a36208, 0x928b06c8, 0xabf3ab88,
+    0xbcdbcf48, 0xd902f108, 0xce2a95c8, 0xf7523888, 0xe07a5c48,
+    0x3ce04408, 0x2bc820c8, 0x12b08d88, 0x0598e948, 0x6041d708,
+    0x7769b3c8, 0x4e111e88, 0x59397a48, 0x2c542849, 0x3b7c4c89,
+    0x0204e1c9, 0x152c8509, 0x70f5bb49, 0x67dddf89, 0x5ea572c9,
+    0x498d1609, 0x95170e49, 0x823f6a89, 0xbb47c7c9, 0xac6fa309,
+    0xc9b69d49, 0xde9ef989, 0xe7e654c9, 0xf0ce3009, 0x0d3cf0cb,
+    0x1a14940b, 0x236c394b, 0x34445d8b, 0x519d63cb, 0x46b5070b,
+    0x7fcdaa4b, 0x68e5ce8b, 0xb47fd6cb, 0xa357b20b, 0x9a2f1f4b,
+    0x8d077b8b, 0xe8de45cb, 0xfff6210b, 0xc68e8c4b, 0xd1a6e88b,
+    0xa4cbba8a, 0xb3e3de4a, 0x8a9b730a, 0x9db317ca, 0xf86a298a,
+    0xef424d4a, 0xd63ae00a, 0xc11284ca, 0x1d889c8a, 0x0aa0f84a,
+    0x33d8550a, 0x24f031ca, 0x41290f8a, 0x56016b4a, 0x6f79c60a,
+    0x7851a2ca},
+   {0x00000000, 0x9fda839e, 0xe4c4017d, 0x7b1e82e3, 0x12f904bb,
+    0x8d238725, 0xf63d05c6, 0x69e78658, 0x25f20976, 0xba288ae8,
+    0xc136080b, 0x5eec8b95, 0x370b0dcd, 0xa8d18e53, 0xd3cf0cb0,
+    0x4c158f2e, 0x4be412ec, 0xd43e9172, 0xaf201391, 0x30fa900f,
+    0x591d1657, 0xc6c795c9, 0xbdd9172a, 0x220394b4, 0x6e161b9a,
+    0xf1cc9804, 0x8ad21ae7, 0x15089979, 0x7cef1f21, 0xe3359cbf,
+    0x982b1e5c, 0x07f19dc2, 0x97c825d8, 0x0812a646, 0x730c24a5,
+    0xecd6a73b, 0x85312163, 0x1aeba2fd, 0x61f5201e, 0xfe2fa380,
+    0xb23a2cae, 0x2de0af30, 0x56fe2dd3, 0xc924ae4d, 0xa0c32815,
+    0x3f19ab8b, 0x44072968, 0xdbddaaf6, 0xdc2c3734, 0x43f6b4aa,
+    0x38e83649, 0xa732b5d7, 0xced5338f, 0x510fb011, 0x2a1132f2,
+    0xb5cbb16c, 0xf9de3e42, 0x6604bddc, 0x1d1a3f3f, 0x82c0bca1,
+    0xeb273af9, 0x74fdb967, 0x0fe33b84, 0x9039b81a, 0xf4e14df1,
+    0x6b3bce6f, 0x10254c8c, 0x8fffcf12, 0xe618494a, 0x79c2cad4,
+    0x02dc4837, 0x9d06cba9, 0xd1134487, 0x4ec9c719, 0x35d745fa,
+    0xaa0dc664, 0xc3ea403c, 0x5c30c3a2, 0x272e4141, 0xb8f4c2df,
+    0xbf055f1d, 0x20dfdc83, 0x5bc15e60, 0xc41bddfe, 0xadfc5ba6,
+    0x3226d838, 0x49385adb, 0xd6e2d945, 0x9af7566b, 0x052dd5f5,
+    0x7e335716, 0xe1e9d488, 0x880e52d0, 0x17d4d14e, 0x6cca53ad,
+    0xf310d033, 0x63296829, 0xfcf3ebb7, 0x87ed6954, 0x1837eaca,
+    0x71d06c92, 0xee0aef0c, 0x95146def, 0x0aceee71, 0x46db615f,
+    0xd901e2c1, 0xa21f6022, 0x3dc5e3bc, 0x542265e4, 0xcbf8e67a,
+    0xb0e66499, 0x2f3ce707, 0x28cd7ac5, 0xb717f95b, 0xcc097bb8,
+    0x53d3f826, 0x3a347e7e, 0xa5eefde0, 0xdef07f03, 0x412afc9d,
+    0x0d3f73b3, 0x92e5f02d, 0xe9fb72ce, 0x7621f150, 0x1fc67708,
+    0x801cf496, 0xfb027675, 0x64d8f5eb, 0x32b39da3, 0xad691e3d,
+    0xd6779cde, 0x49ad1f40, 0x204a9918, 0xbf901a86, 0xc48e9865,
+    0x5b541bfb, 0x174194d5, 0x889b174b, 0xf38595a8, 0x6c5f1636,
+    0x05b8906e, 0x9a6213f0, 0xe17c9113, 0x7ea6128d, 0x79578f4f,
+    0xe68d0cd1, 0x9d938e32, 0x02490dac, 0x6bae8bf4, 0xf474086a,
+    0x8f6a8a89, 0x10b00917, 0x5ca58639, 0xc37f05a7, 0xb8618744,
+    0x27bb04da, 0x4e5c8282, 0xd186011c, 0xaa9883ff, 0x35420061,
+    0xa57bb87b, 0x3aa13be5, 0x41bfb906, 0xde653a98, 0xb782bcc0,
+    0x28583f5e, 0x5346bdbd, 0xcc9c3e23, 0x8089b10d, 0x1f533293,
+    0x644db070, 0xfb9733ee, 0x9270b5b6, 0x0daa3628, 0x76b4b4cb,
+    0xe96e3755, 0xee9faa97, 0x71452909, 0x0a5babea, 0x95812874,
+    0xfc66ae2c, 0x63bc2db2, 0x18a2af51, 0x87782ccf, 0xcb6da3e1,
+    0x54b7207f, 0x2fa9a29c, 0xb0732102, 0xd994a75a, 0x464e24c4,
+    0x3d50a627, 0xa28a25b9, 0xc652d052, 0x598853cc, 0x2296d12f,
+    0xbd4c52b1, 0xd4abd4e9, 0x4b715777, 0x306fd594, 0xafb5560a,
+    0xe3a0d924, 0x7c7a5aba, 0x0764d859, 0x98be5bc7, 0xf159dd9f,
+    0x6e835e01, 0x159ddce2, 0x8a475f7c, 0x8db6c2be, 0x126c4120,
+    0x6972c3c3, 0xf6a8405d, 0x9f4fc605, 0x0095459b, 0x7b8bc778,
+    0xe45144e6, 0xa844cbc8, 0x379e4856, 0x4c80cab5, 0xd35a492b,
+    0xbabdcf73, 0x25674ced, 0x5e79ce0e, 0xc1a34d90, 0x519af58a,
+    0xce407614, 0xb55ef4f7, 0x2a847769, 0x4363f131, 0xdcb972af,
+    0xa7a7f04c, 0x387d73d2, 0x7468fcfc, 0xebb27f62, 0x90acfd81,
+    0x0f767e1f, 0x6691f847, 0xf94b7bd9, 0x8255f93a, 0x1d8f7aa4,
+    0x1a7ee766, 0x85a464f8, 0xfebae61b, 0x61606585, 0x0887e3dd,
+    0x975d6043, 0xec43e2a0, 0x7399613e, 0x3f8cee10, 0xa0566d8e,
+    0xdb48ef6d, 0x44926cf3, 0x2d75eaab, 0xb2af6935, 0xc9b1ebd6,
+    0x566b6848}};
+
+local const z_word_t FAR crc_braid_big_table[][256] = {
+   {0x00000000, 0x9e83da9f, 0x7d01c4e4, 0xe3821e7b, 0xbb04f912,
+    0x2587238d, 0xc6053df6, 0x5886e769, 0x7609f225, 0xe88a28ba,
+    0x0b0836c1, 0x958bec5e, 0xcd0d0b37, 0x538ed1a8, 0xb00ccfd3,
+    0x2e8f154c, 0xec12e44b, 0x72913ed4, 0x911320af, 0x0f90fa30,
+    0x57161d59, 0xc995c7c6, 0x2a17d9bd, 0xb4940322, 0x9a1b166e,
+    0x0498ccf1, 0xe71ad28a, 0x79990815, 0x211fef7c, 0xbf9c35e3,
+    0x5c1e2b98, 0xc29df107, 0xd825c897, 0x46a61208, 0xa5240c73,
+    0x3ba7d6ec, 0x63213185, 0xfda2eb1a, 0x1e20f561, 0x80a32ffe,
+    0xae2c3ab2, 0x30afe02d, 0xd32dfe56, 0x4dae24c9, 0x1528c3a0,
+    0x8bab193f, 0x68290744, 0xf6aadddb, 0x34372cdc, 0xaab4f643,
+    0x4936e838, 0xd7b532a7, 0x8f33d5ce, 0x11b00f51, 0xf232112a,
+    0x6cb1cbb5, 0x423edef9, 0xdcbd0466, 0x3f3f1a1d, 0xa1bcc082,
+    0xf93a27eb, 0x67b9fd74, 0x843be30f, 0x1ab83990, 0xf14de1f4,
+    0x6fce3b6b, 0x8c4c2510, 0x12cfff8f, 0x4a4918e6, 0xd4cac279,
+    0x3748dc02, 0xa9cb069d, 0x874413d1, 0x19c7c94e, 0xfa45d735,
+    0x64c60daa, 0x3c40eac3, 0xa2c3305c, 0x41412e27, 0xdfc2f4b8,
+    0x1d5f05bf, 0x83dcdf20, 0x605ec15b, 0xfedd1bc4, 0xa65bfcad,
+    0x38d82632, 0xdb5a3849, 0x45d9e2d6, 0x6b56f79a, 0xf5d52d05,
+    0x1657337e, 0x88d4e9e1, 0xd0520e88, 0x4ed1d417, 0xad53ca6c,
+    0x33d010f3, 0x29682963, 0xb7ebf3fc, 0x5469ed87, 0xcaea3718,
+    0x926cd071, 0x0cef0aee, 0xef6d1495, 0x71eece0a, 0x5f61db46,
+    0xc1e201d9, 0x22601fa2, 0xbce3c53d, 0xe4652254, 0x7ae6f8cb,
+    0x9964e6b0, 0x07e73c2f, 0xc57acd28, 0x5bf917b7, 0xb87b09cc,
+    0x26f8d353, 0x7e7e343a, 0xe0fdeea5, 0x037ff0de, 0x9dfc2a41,
+    0xb3733f0d, 0x2df0e592, 0xce72fbe9, 0x50f12176, 0x0877c61f,
+    0x96f41c80, 0x757602fb, 0xebf5d864, 0xa39db332, 0x3d1e69ad,
+    0xde9c77d6, 0x401fad49, 0x18994a20, 0x861a90bf, 0x65988ec4,
+    0xfb1b545b, 0xd5944117, 0x4b179b88, 0xa89585f3, 0x36165f6c,
+    0x6e90b805, 0xf013629a, 0x13917ce1, 0x8d12a67e, 0x4f8f5779,
+    0xd10c8de6, 0x328e939d, 0xac0d4902, 0xf48bae6b, 0x6a0874f4,
+    0x898a6a8f, 0x1709b010, 0x3986a55c, 0xa7057fc3, 0x448761b8,
+    0xda04bb27, 0x82825c4e, 0x1c0186d1, 0xff8398aa, 0x61004235,
+    0x7bb87ba5, 0xe53ba13a, 0x06b9bf41, 0x983a65de, 0xc0bc82b7,
+    0x5e3f5828, 0xbdbd4653, 0x233e9ccc, 0x0db18980, 0x9332531f,
+    0x70b04d64, 0xee3397fb, 0xb6b57092, 0x2836aa0d, 0xcbb4b476,
+    0x55376ee9, 0x97aa9fee, 0x09294571, 0xeaab5b0a, 0x74288195,
+    0x2cae66fc, 0xb22dbc63, 0x51afa218, 0xcf2c7887, 0xe1a36dcb,
+    0x7f20b754, 0x9ca2a92f, 0x022173b0, 0x5aa794d9, 0xc4244e46,
+    0x27a6503d, 0xb9258aa2, 0x52d052c6, 0xcc538859, 0x2fd19622,
+    0xb1524cbd, 0xe9d4abd4, 0x7757714b, 0x94d56f30, 0x0a56b5af,
+    0x24d9a0e3, 0xba5a7a7c, 0x59d86407, 0xc75bbe98, 0x9fdd59f1,
+    0x015e836e, 0xe2dc9d15, 0x7c5f478a, 0xbec2b68d, 0x20416c12,
+    0xc3c37269, 0x5d40a8f6, 0x05c64f9f, 0x9b459500, 0x78c78b7b,
+    0xe64451e4, 0xc8cb44a8, 0x56489e37, 0xb5ca804c, 0x2b495ad3,
+    0x73cfbdba, 0xed4c6725, 0x0ece795e, 0x904da3c1, 0x8af59a51,
+    0x147640ce, 0xf7f45eb5, 0x6977842a, 0x31f16343, 0xaf72b9dc,
+    0x4cf0a7a7, 0xd2737d38, 0xfcfc6874, 0x627fb2eb, 0x81fdac90,
+    0x1f7e760f, 0x47f89166, 0xd97b4bf9, 0x3af95582, 0xa47a8f1d,
+    0x66e77e1a, 0xf864a485, 0x1be6bafe, 0x85656061, 0xdde38708,
+    0x43605d97, 0xa0e243ec, 0x3e619973, 0x10ee8c3f, 0x8e6d56a0,
+    0x6def48db, 0xf36c9244, 0xabea752d, 0x3569afb2, 0xd6ebb1c9,
+    0x48686b56},
+   {0x00000000, 0xc0642817, 0x80c9502e, 0x40ad7839, 0x0093a15c,
+    0xc0f7894b, 0x805af172, 0x403ed965, 0x002643b9, 0xc0426bae,
+    0x80ef1397, 0x408b3b80, 0x00b5e2e5, 0xc0d1caf2, 0x807cb2cb,
+    0x40189adc, 0x414af7a9, 0x812edfbe, 0xc183a787, 0x01e78f90,
+    0x41d956f5, 0x81bd7ee2, 0xc11006db, 0x01742ecc, 0x416cb410,
+    0x81089c07, 0xc1a5e43e, 0x01c1cc29, 0x41ff154c, 0x819b3d5b,
+    0xc1364562, 0x01526d75, 0xc3929f88, 0x03f6b79f, 0x435bcfa6,
+    0x833fe7b1, 0xc3013ed4, 0x036516c3, 0x43c86efa, 0x83ac46ed,
+    0xc3b4dc31, 0x03d0f426, 0x437d8c1f, 0x8319a408, 0xc3277d6d,
+    0x0343557a, 0x43ee2d43, 0x838a0554, 0x82d86821, 0x42bc4036,
+    0x0211380f, 0xc2751018, 0x824bc97d, 0x422fe16a, 0x02829953,
+    0xc2e6b144, 0x82fe2b98, 0x429a038f, 0x02377bb6, 0xc25353a1,
+    0x826d8ac4, 0x4209a2d3, 0x02a4daea, 0xc2c0f2fd, 0xc7234eca,
+    0x074766dd, 0x47ea1ee4, 0x878e36f3, 0xc7b0ef96, 0x07d4c781,
+    0x4779bfb8, 0x871d97af, 0xc7050d73, 0x07612564, 0x47cc5d5d,
+    0x87a8754a, 0xc796ac2f, 0x07f28438, 0x475ffc01, 0x873bd416,
+    0x8669b963, 0x460d9174, 0x06a0e94d, 0xc6c4c15a, 0x86fa183f,
+    0x469e3028, 0x06334811, 0xc6576006, 0x864ffada, 0x462bd2cd,
+    0x0686aaf4, 0xc6e282e3, 0x86dc5b86, 0x46b87391, 0x06150ba8,
+    0xc67123bf, 0x04b1d142, 0xc4d5f955, 0x8478816c, 0x441ca97b,
+    0x0422701e, 0xc4465809, 0x84eb2030, 0x448f0827, 0x049792fb,
+    0xc4f3baec, 0x845ec2d5, 0x443aeac2, 0x040433a7, 0xc4601bb0,
+    0x84cd6389, 0x44a94b9e, 0x45fb26eb, 0x859f0efc, 0xc53276c5,
+    0x05565ed2, 0x456887b7, 0x850cafa0, 0xc5a1d799, 0x05c5ff8e,
+    0x45dd6552, 0x85b94d45, 0xc514357c, 0x05701d6b, 0x454ec40e,
+    0x852aec19, 0xc5879420, 0x05e3bc37, 0xcf41ed4f, 0x0f25c558,
+    0x4f88bd61, 0x8fec9576, 0xcfd24c13, 0x0fb66404, 0x4f1b1c3d,
+    0x8f7f342a, 0xcf67aef6, 0x0f0386e1, 0x4faefed8, 0x8fcad6cf,
+    0xcff40faa, 0x0f9027bd, 0x4f3d5f84, 0x8f597793, 0x8e0b1ae6,
+    0x4e6f32f1, 0x0ec24ac8, 0xcea662df, 0x8e98bbba, 0x4efc93ad,
+    0x0e51eb94, 0xce35c383, 0x8e2d595f, 0x4e497148, 0x0ee40971,
+    0xce802166, 0x8ebef803, 0x4edad014, 0x0e77a82d, 0xce13803a,
+    0x0cd372c7, 0xccb75ad0, 0x8c1a22e9, 0x4c7e0afe, 0x0c40d39b,
+    0xcc24fb8c, 0x8c8983b5, 0x4cedaba2, 0x0cf5317e, 0xcc911969,
+    0x8c3c6150, 0x4c584947, 0x0c669022, 0xcc02b835, 0x8cafc00c,
+    0x4ccbe81b, 0x4d99856e, 0x8dfdad79, 0xcd50d540, 0x0d34fd57,
+    0x4d0a2432, 0x8d6e0c25, 0xcdc3741c, 0x0da75c0b, 0x4dbfc6d7,
+    0x8ddbeec0, 0xcd7696f9, 0x0d12beee, 0x4d2c678b, 0x8d484f9c,
+    0xcde537a5, 0x0d811fb2, 0x0862a385, 0xc8068b92, 0x88abf3ab,
+    0x48cfdbbc, 0x08f102d9, 0xc8952ace, 0x883852f7, 0x485c7ae0,
+    0x0844e03c, 0xc820c82b, 0x888db012, 0x48e99805, 0x08d74160,
+    0xc8b36977, 0x881e114e, 0x487a3959, 0x4928542c, 0x894c7c3b,
+    0xc9e10402, 0x09852c15, 0x49bbf570, 0x89dfdd67, 0xc972a55e,
+    0x09168d49, 0x490e1795, 0x896a3f82, 0xc9c747bb, 0x09a36fac,
+    0x499db6c9, 0x89f99ede, 0xc954e6e7, 0x0930cef0, 0xcbf03c0d,
+    0x0b94141a, 0x4b396c23, 0x8b5d4434, 0xcb639d51, 0x0b07b546,
+    0x4baacd7f, 0x8bcee568, 0xcbd67fb4, 0x0bb257a3, 0x4b1f2f9a,
+    0x8b7b078d, 0xcb45dee8, 0x0b21f6ff, 0x4b8c8ec6, 0x8be8a6d1,
+    0x8abacba4, 0x4adee3b3, 0x0a739b8a, 0xca17b39d, 0x8a296af8,
+    0x4a4d42ef, 0x0ae03ad6, 0xca8412c1, 0x8a9c881d, 0x4af8a00a,
+    0x0a55d833, 0xca31f024, 0x8a0f2941, 0x4a6b0156, 0x0ac6796f,
+    0xcaa25178},
+   {0x00000000, 0xd4ea739b, 0xe9d396ed, 0x3d39e576, 0x93a15c00,
+    0x474b2f9b, 0x7a72caed, 0xae98b976, 0x2643b900, 0xf2a9ca9b,
+    0xcf902fed, 0x1b7a5c76, 0xb5e2e500, 0x6108969b, 0x5c3173ed,
+    0x88db0076, 0x4c867201, 0x986c019a, 0xa555e4ec, 0x71bf9777,
+    0xdf272e01, 0x0bcd5d9a, 0x36f4b8ec, 0xe21ecb77, 0x6ac5cb01,
+    0xbe2fb89a, 0x83165dec, 0x57fc2e77, 0xf9649701, 0x2d8ee49a,
+    0x10b701ec, 0xc45d7277, 0x980ce502, 0x4ce69699, 0x71df73ef,
+    0xa5350074, 0x0badb902, 0xdf47ca99, 0xe27e2fef, 0x36945c74,
+    0xbe4f5c02, 0x6aa52f99, 0x579ccaef, 0x8376b974, 0x2dee0002,
+    0xf9047399, 0xc43d96ef, 0x10d7e574, 0xd48a9703, 0x0060e498,
+    0x3d5901ee, 0xe9b37275, 0x472bcb03, 0x93c1b898, 0xaef85dee,
+    0x7a122e75, 0xf2c92e03, 0x26235d98, 0x1b1ab8ee, 0xcff0cb75,
+    0x61687203, 0xb5820198, 0x88bbe4ee, 0x5c519775, 0x3019ca05,
+    0xe4f3b99e, 0xd9ca5ce8, 0x0d202f73, 0xa3b89605, 0x7752e59e,
+    0x4a6b00e8, 0x9e817373, 0x165a7305, 0xc2b0009e, 0xff89e5e8,
+    0x2b639673, 0x85fb2f05, 0x51115c9e, 0x6c28b9e8, 0xb8c2ca73,
+    0x7c9fb804, 0xa875cb9f, 0x954c2ee9, 0x41a65d72, 0xef3ee404,
+    0x3bd4979f, 0x06ed72e9, 0xd2070172, 0x5adc0104, 0x8e36729f,
+    0xb30f97e9, 0x67e5e472, 0xc97d5d04, 0x1d972e9f, 0x20aecbe9,
+    0xf444b872, 0xa8152f07, 0x7cff5c9c, 0x41c6b9ea, 0x952cca71,
+    0x3bb47307, 0xef5e009c, 0xd267e5ea, 0x068d9671, 0x8e569607,
+    0x5abce59c, 0x678500ea, 0xb36f7371, 0x1df7ca07, 0xc91db99c,
+    0xf4245cea, 0x20ce2f71, 0xe4935d06, 0x30792e9d, 0x0d40cbeb,
+    0xd9aab870, 0x77320106, 0xa3d8729d, 0x9ee197eb, 0x4a0be470,
+    0xc2d0e406, 0x163a979d, 0x2b0372eb, 0xffe90170, 0x5171b806,
+    0x859bcb9d, 0xb8a22eeb, 0x6c485d70, 0x6032940b, 0xb4d8e790,
+    0x89e102e6, 0x5d0b717d, 0xf393c80b, 0x2779bb90, 0x1a405ee6,
+    0xceaa2d7d, 0x46712d0b, 0x929b5e90, 0xafa2bbe6, 0x7b48c87d,
+    0xd5d0710b, 0x013a0290, 0x3c03e7e6, 0xe8e9947d, 0x2cb4e60a,
+    0xf85e9591, 0xc56770e7, 0x118d037c, 0xbf15ba0a, 0x6bffc991,
+    0x56c62ce7, 0x822c5f7c, 0x0af75f0a, 0xde1d2c91, 0xe324c9e7,
+    0x37ceba7c, 0x9956030a, 0x4dbc7091, 0x708595e7, 0xa46fe67c,
+    0xf83e7109, 0x2cd40292, 0x11ede7e4, 0xc507947f, 0x6b9f2d09,
+    0xbf755e92, 0x824cbbe4, 0x56a6c87f, 0xde7dc809, 0x0a97bb92,
+    0x37ae5ee4, 0xe3442d7f, 0x4ddc9409, 0x9936e792, 0xa40f02e4,
+    0x70e5717f, 0xb4b80308, 0x60527093, 0x5d6b95e5, 0x8981e67e,
+    0x27195f08, 0xf3f32c93, 0xcecac9e5, 0x1a20ba7e, 0x92fbba08,
+    0x4611c993, 0x7b282ce5, 0xafc25f7e, 0x015ae608, 0xd5b09593,
+    0xe88970e5, 0x3c63037e, 0x502b5e0e, 0x84c12d95, 0xb9f8c8e3,
+    0x6d12bb78, 0xc38a020e, 0x17607195, 0x2a5994e3, 0xfeb3e778,
+    0x7668e70e, 0xa2829495, 0x9fbb71e3, 0x4b510278, 0xe5c9bb0e,
+    0x3123c895, 0x0c1a2de3, 0xd8f05e78, 0x1cad2c0f, 0xc8475f94,
+    0xf57ebae2, 0x2194c979, 0x8f0c700f, 0x5be60394, 0x66dfe6e2,
+    0xb2359579, 0x3aee950f, 0xee04e694, 0xd33d03e2, 0x07d77079,
+    0xa94fc90f, 0x7da5ba94, 0x409c5fe2, 0x94762c79, 0xc827bb0c,
+    0x1ccdc897, 0x21f42de1, 0xf51e5e7a, 0x5b86e70c, 0x8f6c9497,
+    0xb25571e1, 0x66bf027a, 0xee64020c, 0x3a8e7197, 0x07b794e1,
+    0xd35de77a, 0x7dc55e0c, 0xa92f2d97, 0x9416c8e1, 0x40fcbb7a,
+    0x84a1c90d, 0x504bba96, 0x6d725fe0, 0xb9982c7b, 0x1700950d,
+    0xc3eae696, 0xfed303e0, 0x2a39707b, 0xa2e2700d, 0x76080396,
+    0x4b31e6e0, 0x9fdb957b, 0x31432c0d, 0xe5a95f96, 0xd890bae0,
+    0x0c7ac97b},
+   {0x00000000, 0x27652581, 0x0fcc3bd9, 0x28a91e58, 0x5f9e0669,
+    0x78fb23e8, 0x50523db0, 0x77371831, 0xbe3c0dd2, 0x99592853,
+    0xb1f0360b, 0x9695138a, 0xe1a20bbb, 0xc6c72e3a, 0xee6e3062,
+    0xc90b15e3, 0x3d7f6b7f, 0x1a1a4efe, 0x32b350a6, 0x15d67527,
+    0x62e16d16, 0x45844897, 0x6d2d56cf, 0x4a48734e, 0x834366ad,
+    0xa426432c, 0x8c8f5d74, 0xabea78f5, 0xdcdd60c4, 0xfbb84545,
+    0xd3115b1d, 0xf4747e9c, 0x7afed6fe, 0x5d9bf37f, 0x7532ed27,
+    0x5257c8a6, 0x2560d097, 0x0205f516, 0x2aaceb4e, 0x0dc9cecf,
+    0xc4c2db2c, 0xe3a7fead, 0xcb0ee0f5, 0xec6bc574, 0x9b5cdd45,
+    0xbc39f8c4, 0x9490e69c, 0xb3f5c31d, 0x4781bd81, 0x60e49800,
+    0x484d8658, 0x6f28a3d9, 0x181fbbe8, 0x3f7a9e69, 0x17d38031,
+    0x30b6a5b0, 0xf9bdb053, 0xded895d2, 0xf6718b8a, 0xd114ae0b,
+    0xa623b63a, 0x814693bb, 0xa9ef8de3, 0x8e8aa862, 0xb5fadc26,
+    0x929ff9a7, 0xba36e7ff, 0x9d53c27e, 0xea64da4f, 0xcd01ffce,
+    0xe5a8e196, 0xc2cdc417, 0x0bc6d1f4, 0x2ca3f475, 0x040aea2d,
+    0x236fcfac, 0x5458d79d, 0x733df21c, 0x5b94ec44, 0x7cf1c9c5,
+    0x8885b759, 0xafe092d8, 0x87498c80, 0xa02ca901, 0xd71bb130,
+    0xf07e94b1, 0xd8d78ae9, 0xffb2af68, 0x36b9ba8b, 0x11dc9f0a,
+    0x39758152, 0x1e10a4d3, 0x6927bce2, 0x4e429963, 0x66eb873b,
+    0x418ea2ba, 0xcf040ad8, 0xe8612f59, 0xc0c83101, 0xe7ad1480,
+    0x909a0cb1, 0xb7ff2930, 0x9f563768, 0xb83312e9, 0x7138070a,
+    0x565d228b, 0x7ef43cd3, 0x59911952, 0x2ea60163, 0x09c324e2,
+    0x216a3aba, 0x060f1f3b, 0xf27b61a7, 0xd51e4426, 0xfdb75a7e,
+    0xdad27fff, 0xade567ce, 0x8a80424f, 0xa2295c17, 0x854c7996,
+    0x4c476c75, 0x6b2249f4, 0x438b57ac, 0x64ee722d, 0x13d96a1c,
+    0x34bc4f9d, 0x1c1551c5, 0x3b707444, 0x6af5b94d, 0x4d909ccc,
+    0x65398294, 0x425ca715, 0x356bbf24, 0x120e9aa5, 0x3aa784fd,
+    0x1dc2a17c, 0xd4c9b49f, 0xf3ac911e, 0xdb058f46, 0xfc60aac7,
+    0x8b57b2f6, 0xac329777, 0x849b892f, 0xa3feacae, 0x578ad232,
+    0x70eff7b3, 0x5846e9eb, 0x7f23cc6a, 0x0814d45b, 0x2f71f1da,
+    0x07d8ef82, 0x20bdca03, 0xe9b6dfe0, 0xced3fa61, 0xe67ae439,
+    0xc11fc1b8, 0xb628d989, 0x914dfc08, 0xb9e4e250, 0x9e81c7d1,
+    0x100b6fb3, 0x376e4a32, 0x1fc7546a, 0x38a271eb, 0x4f9569da,
+    0x68f04c5b, 0x40595203, 0x673c7782, 0xae376261, 0x895247e0,
+    0xa1fb59b8, 0x869e7c39, 0xf1a96408, 0xd6cc4189, 0xfe655fd1,
+    0xd9007a50, 0x2d7404cc, 0x0a11214d, 0x22b83f15, 0x05dd1a94,
+    0x72ea02a5, 0x558f2724, 0x7d26397c, 0x5a431cfd, 0x9348091e,
+    0xb42d2c9f, 0x9c8432c7, 0xbbe11746, 0xccd60f77, 0xebb32af6,
+    0xc31a34ae, 0xe47f112f, 0xdf0f656b, 0xf86a40ea, 0xd0c35eb2,
+    0xf7a67b33, 0x80916302, 0xa7f44683, 0x8f5d58db, 0xa8387d5a,
+    0x613368b9, 0x46564d38, 0x6eff5360, 0x499a76e1, 0x3ead6ed0,
+    0x19c84b51, 0x31615509, 0x16047088, 0xe2700e14, 0xc5152b95,
+    0xedbc35cd, 0xcad9104c, 0xbdee087d, 0x9a8b2dfc, 0xb22233a4,
+    0x95471625, 0x5c4c03c6, 0x7b292647, 0x5380381f, 0x74e51d9e,
+    0x03d205af, 0x24b7202e, 0x0c1e3e76, 0x2b7b1bf7, 0xa5f1b395,
+    0x82949614, 0xaa3d884c, 0x8d58adcd, 0xfa6fb5fc, 0xdd0a907d,
+    0xf5a38e25, 0xd2c6aba4, 0x1bcdbe47, 0x3ca89bc6, 0x1401859e,
+    0x3364a01f, 0x4453b82e, 0x63369daf, 0x4b9f83f7, 0x6cfaa676,
+    0x988ed8ea, 0xbfebfd6b, 0x9742e333, 0xb027c6b2, 0xc710de83,
+    0xe075fb02, 0xc8dce55a, 0xefb9c0db, 0x26b2d538, 0x01d7f0b9,
+    0x297eeee1, 0x0e1bcb60, 0x792cd351, 0x5e49f6d0, 0x76e0e888,
+    0x5185cd09}};
+
+#endif
+
+#endif
+
+#endif
+
+local const z_crc_t FAR x2n_table[] = {
+    0x40000000, 0x20000000, 0x08000000, 0x00800000, 0x00008000,
+    0xedb88320, 0xb1e6b092, 0xa06a2517, 0xed627dae, 0x88d14467,
+    0xd7bbfe6a, 0xec447f11, 0x8e7ea170, 0x6427800e, 0x4d47bae0,
+    0x09fe548f, 0x83852d0f, 0x30362f1a, 0x7b5a9cc3, 0x31fec169,
+    0x9fec022a, 0x6c8dedc4, 0x15d6874d, 0x5fde7a4e, 0xbad90e37,
+    0x2e4e5eef, 0x4eaba214, 0xa8a472c0, 0x429a969e, 0x148d302a,
+    0xc40ba6d0, 0xc4e22c3c};
diff --git a/lib/zlib/deflate.c b/lib/zlib/deflate.c
new file mode 100644
index 0000000..aadd357
--- /dev/null
+++ b/lib/zlib/deflate.c
@@ -0,0 +1,2219 @@
+/* deflate.c -- compress data using the deflation algorithm
+ * Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/*
+ *  ALGORITHM
+ *
+ *      The "deflation" process depends on being able to identify portions
+ *      of the input text which are identical to earlier input (within a
+ *      sliding window trailing behind the input currently being processed).
+ *
+ *      The most straightforward technique turns out to be the fastest for
+ *      most input files: try all possible matches and select the longest.
+ *      The key feature of this algorithm is that insertions into the string
+ *      dictionary are very simple and thus fast, and deletions are avoided
+ *      completely. Insertions are performed at each input character, whereas
+ *      string matches are performed only when the previous match ends. So it
+ *      is preferable to spend more time in matches to allow very fast string
+ *      insertions and avoid deletions. The matching algorithm for small
+ *      strings is inspired from that of Rabin & Karp. A brute force approach
+ *      is used to find longer strings when a small match has been found.
+ *      A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
+ *      (by Leonid Broukhis).
+ *         A previous version of this file used a more sophisticated algorithm
+ *      (by Fiala and Greene) which is guaranteed to run in linear amortized
+ *      time, but has a larger average cost, uses more memory and is patented.
+ *      However the F&G algorithm may be faster for some highly redundant
+ *      files if the parameter max_chain_length (described below) is too large.
+ *
+ *  ACKNOWLEDGEMENTS
+ *
+ *      The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
+ *      I found it in 'freeze' written by Leonid Broukhis.
+ *      Thanks to many people for bug reports and testing.
+ *
+ *  REFERENCES
+ *
+ *      Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
+ *      Available in http://tools.ietf.org/html/rfc1951
+ *
+ *      A description of the Rabin and Karp algorithm is given in the book
+ *         "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
+ *
+ *      Fiala,E.R., and Greene,D.H.
+ *         Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
+ *
+ */
+
+/* @(#) $Id$ */
+
+#include "deflate.h"
+
+const char deflate_copyright[] =
+   " deflate 1.2.13 Copyright 1995-2022 Jean-loup Gailly and Mark Adler ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+
+/* ===========================================================================
+ *  Function prototypes.
+ */
+typedef enum {
+    need_more,      /* block not completed, need more input or more output */
+    block_done,     /* block flush performed */
+    finish_started, /* finish started, need only more output at next deflate */
+    finish_done     /* finish done, accept no more input or output */
+} block_state;
+
+typedef block_state (*compress_func) OF((deflate_state *s, int flush));
+/* Compression function. Returns the block state after the call. */
+
+local int deflateStateCheck      OF((z_streamp strm));
+local void slide_hash     OF((deflate_state *s));
+local void fill_window    OF((deflate_state *s));
+local block_state deflate_stored OF((deflate_state *s, int flush));
+local block_state deflate_fast   OF((deflate_state *s, int flush));
+#ifndef FASTEST
+local block_state deflate_slow   OF((deflate_state *s, int flush));
+#endif
+local block_state deflate_rle    OF((deflate_state *s, int flush));
+local block_state deflate_huff   OF((deflate_state *s, int flush));
+local void lm_init        OF((deflate_state *s));
+local void putShortMSB    OF((deflate_state *s, uInt b));
+local void flush_pending  OF((z_streamp strm));
+local unsigned read_buf   OF((z_streamp strm, Bytef *buf, unsigned size));
+local uInt longest_match  OF((deflate_state *s, IPos cur_match));
+
+#ifdef ZLIB_DEBUG
+local  void check_match OF((deflate_state *s, IPos start, IPos match,
+                            int length));
+#endif
+
+/* ===========================================================================
+ * Local data
+ */
+
+#define NIL 0
+/* Tail of hash chains */
+
+#ifndef TOO_FAR
+#  define TOO_FAR 4096
+#endif
+/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
+
+/* Values for max_lazy_match, good_match and max_chain_length, depending on
+ * the desired pack level (0..9). The values given below have been tuned to
+ * exclude worst case performance for pathological files. Better values may be
+ * found for specific files.
+ */
+typedef struct config_s {
+   ush good_length; /* reduce lazy search above this match length */
+   ush max_lazy;    /* do not perform lazy search above this match length */
+   ush nice_length; /* quit search above this match length */
+   ush max_chain;
+   compress_func func;
+} config;
+
+#ifdef FASTEST
+local const config configuration_table[2] = {
+/*      good lazy nice chain */
+/* 0 */ {0,    0,  0,    0, deflate_stored},  /* store only */
+/* 1 */ {4,    4,  8,    4, deflate_fast}}; /* max speed, no lazy matches */
+#else
+local const config configuration_table[10] = {
+/*      good lazy nice chain */
+/* 0 */ {0,    0,  0,    0, deflate_stored},  /* store only */
+/* 1 */ {4,    4,  8,    4, deflate_fast}, /* max speed, no lazy matches */
+/* 2 */ {4,    5, 16,    8, deflate_fast},
+/* 3 */ {4,    6, 32,   32, deflate_fast},
+
+/* 4 */ {4,    4, 16,   16, deflate_slow},  /* lazy matches */
+/* 5 */ {8,   16, 32,   32, deflate_slow},
+/* 6 */ {8,   16, 128, 128, deflate_slow},
+/* 7 */ {8,   32, 128, 256, deflate_slow},
+/* 8 */ {32, 128, 258, 1024, deflate_slow},
+/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */
+#endif
+
+/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
+ * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
+ * meaning.
+ */
+
+/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
+#define RANK(f) (((f) * 2) - ((f) > 4 ? 9 : 0))
+
+/* ===========================================================================
+ * Update a hash value with the given input byte
+ * IN  assertion: all calls to UPDATE_HASH are made with consecutive input
+ *    characters, so that a running hash key can be computed from the previous
+ *    key instead of complete recalculation each time.
+ */
+#define UPDATE_HASH(s,h,c) (h = (((h) << s->hash_shift) ^ (c)) & s->hash_mask)
+
+
+/* ===========================================================================
+ * Insert string str in the dictionary and set match_head to the previous head
+ * of the hash chain (the most recent string with same hash key). Return
+ * the previous length of the hash chain.
+ * If this file is compiled with -DFASTEST, the compression level is forced
+ * to 1, and no hash chains are maintained.
+ * IN  assertion: all calls to INSERT_STRING are made with consecutive input
+ *    characters and the first MIN_MATCH bytes of str are valid (except for
+ *    the last MIN_MATCH-1 bytes of the input file).
+ */
+#ifdef FASTEST
+#define INSERT_STRING(s, str, match_head) \
+   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+    match_head = s->head[s->ins_h], \
+    s->head[s->ins_h] = (Pos)(str))
+#else
+#define INSERT_STRING(s, str, match_head) \
+   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+    match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \
+    s->head[s->ins_h] = (Pos)(str))
+#endif
+
+/* ===========================================================================
+ * Initialize the hash table (avoiding 64K overflow for 16 bit systems).
+ * prev[] will be initialized on the fly.
+ */
+#define CLEAR_HASH(s) \
+    do { \
+        s->head[s->hash_size - 1] = NIL; \
+        zmemzero((Bytef *)s->head, \
+                 (unsigned)(s->hash_size - 1)*sizeof(*s->head)); \
+    } while (0)
+
+/* ===========================================================================
+ * Slide the hash table when sliding the window down (could be avoided with 32
+ * bit values at the expense of memory usage). We slide even when level == 0 to
+ * keep the hash table consistent if we switch back to level > 0 later.
+ */
+local void slide_hash(s)
+    deflate_state *s;
+{
+    unsigned n, m;
+    Posf *p;
+    uInt wsize = s->w_size;
+
+    n = s->hash_size;
+    p = &s->head[n];
+    do {
+        m = *--p;
+        *p = (Pos)(m >= wsize ? m - wsize : NIL);
+    } while (--n);
+    n = wsize;
+#ifndef FASTEST
+    p = &s->prev[n];
+    do {
+        m = *--p;
+        *p = (Pos)(m >= wsize ? m - wsize : NIL);
+        /* If n is not on any hash chain, prev[n] is garbage but
+         * its value will never be used.
+         */
+    } while (--n);
+#endif
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateInit_(strm, level, version, stream_size)
+    z_streamp strm;
+    int level;
+    const char *version;
+    int stream_size;
+{
+    return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
+                         Z_DEFAULT_STRATEGY, version, stream_size);
+    /* To do: ignore strm->next_in if we use it as window */
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
+                  version, stream_size)
+    z_streamp strm;
+    int  level;
+    int  method;
+    int  windowBits;
+    int  memLevel;
+    int  strategy;
+    const char *version;
+    int stream_size;
+{
+    deflate_state *s;
+    int wrap = 1;
+    static const char my_version[] = ZLIB_VERSION;
+
+    if (version == Z_NULL || version[0] != my_version[0] ||
+        stream_size != sizeof(z_stream)) {
+        return Z_VERSION_ERROR;
+    }
+    if (strm == Z_NULL) return Z_STREAM_ERROR;
+
+    strm->msg = Z_NULL;
+    if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zalloc = zcalloc;
+        strm->opaque = (voidpf)0;
+#endif
+    }
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zfree = zcfree;
+#endif
+
+#ifdef FASTEST
+    if (level != 0) level = 1;
+#else
+    if (level == Z_DEFAULT_COMPRESSION) level = 6;
+#endif
+
+    if (windowBits < 0) { /* suppress zlib wrapper */
+        wrap = 0;
+        if (windowBits < -15)
+            return Z_STREAM_ERROR;
+        windowBits = -windowBits;
+    }
+#ifdef GZIP
+    else if (windowBits > 15) {
+        wrap = 2;       /* write gzip wrapper instead */
+        windowBits -= 16;
+    }
+#endif
+    if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
+        windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
+        strategy < 0 || strategy > Z_FIXED || (windowBits == 8 && wrap != 1)) {
+        return Z_STREAM_ERROR;
+    }
+    if (windowBits == 8) windowBits = 9;  /* until 256-byte window bug fixed */
+    s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
+    if (s == Z_NULL) return Z_MEM_ERROR;
+    strm->state = (struct internal_state FAR *)s;
+    s->strm = strm;
+    s->status = INIT_STATE;     /* to pass state test in deflateReset() */
+
+    s->wrap = wrap;
+    s->gzhead = Z_NULL;
+    s->w_bits = (uInt)windowBits;
+    s->w_size = 1 << s->w_bits;
+    s->w_mask = s->w_size - 1;
+
+    s->hash_bits = (uInt)memLevel + 7;
+    s->hash_size = 1 << s->hash_bits;
+    s->hash_mask = s->hash_size - 1;
+    s->hash_shift =  ((s->hash_bits + MIN_MATCH-1) / MIN_MATCH);
+
+    s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
+    s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
+    s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));
+
+    s->high_water = 0;      /* nothing written to s->window yet */
+
+    s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+
+    /* We overlay pending_buf and sym_buf. This works since the average size
+     * for length/distance pairs over any compressed block is assured to be 31
+     * bits or less.
+     *
+     * Analysis: The longest fixed codes are a length code of 8 bits plus 5
+     * extra bits, for lengths 131 to 257. The longest fixed distance codes are
+     * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest
+     * possible fixed-codes length/distance pair is then 31 bits total.
+     *
+     * sym_buf starts one-fourth of the way into pending_buf. So there are
+     * three bytes in sym_buf for every four bytes in pending_buf. Each symbol
+     * in sym_buf is three bytes -- two for the distance and one for the
+     * literal/length. As each symbol is consumed, the pointer to the next
+     * sym_buf value to read moves forward three bytes. From that symbol, up to
+     * 31 bits are written to pending_buf. The closest the written pending_buf
+     * bits gets to the next sym_buf symbol to read is just before the last
+     * code is written. At that time, 31*(n - 2) bits have been written, just
+     * after 24*(n - 2) bits have been consumed from sym_buf. sym_buf starts at
+     * 8*n bits into pending_buf. (Note that the symbol buffer fills when n - 1
+     * symbols are written.) The closest the writing gets to what is unread is
+     * then n + 14 bits. Here n is lit_bufsize, which is 16384 by default, and
+     * can range from 128 to 32768.
+     *
+     * Therefore, at a minimum, there are 142 bits of space between what is
+     * written and what is read in the overlain buffers, so the symbols cannot
+     * be overwritten by the compressed data. That space is actually 139 bits,
+     * due to the three-bit fixed-code block header.
+     *
+     * That covers the case where either Z_FIXED is specified, forcing fixed
+     * codes, or when the use of fixed codes is chosen, because that choice
+     * results in a smaller compressed block than dynamic codes. That latter
+     * condition then assures that the above analysis also covers all dynamic
+     * blocks. A dynamic-code block will only be chosen to be emitted if it has
+     * fewer bits than a fixed-code block would for the same set of symbols.
+     * Therefore its average symbol length is assured to be less than 31. So
+     * the compressed data for a dynamic block also cannot overwrite the
+     * symbols from which it is being constructed.
+     */
+
+    s->pending_buf = (uchf *) ZALLOC(strm, s->lit_bufsize, 4);
+    s->pending_buf_size = (ulg)s->lit_bufsize * 4;
+
+    if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
+        s->pending_buf == Z_NULL) {
+        s->status = FINISH_STATE;
+        strm->msg = ERR_MSG(Z_MEM_ERROR);
+        deflateEnd (strm);
+        return Z_MEM_ERROR;
+    }
+    s->sym_buf = s->pending_buf + s->lit_bufsize;
+    s->sym_end = (s->lit_bufsize - 1) * 3;
+    /* We avoid equality with lit_bufsize*3 because of wraparound at 64K
+     * on 16 bit machines and because stored blocks are restricted to
+     * 64K-1 bytes.
+     */
+
+    s->level = level;
+    s->strategy = strategy;
+    s->method = (Byte)method;
+
+    return deflateReset(strm);
+}
+
+/* =========================================================================
+ * Check for a valid deflate stream state. Return 0 if ok, 1 if not.
+ */
+local int deflateStateCheck(strm)
+    z_streamp strm;
+{
+    deflate_state *s;
+    if (strm == Z_NULL ||
+        strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
+        return 1;
+    s = strm->state;
+    if (s == Z_NULL || s->strm != strm || (s->status != INIT_STATE &&
+#ifdef GZIP
+                                           s->status != GZIP_STATE &&
+#endif
+                                           s->status != EXTRA_STATE &&
+                                           s->status != NAME_STATE &&
+                                           s->status != COMMENT_STATE &&
+                                           s->status != HCRC_STATE &&
+                                           s->status != BUSY_STATE &&
+                                           s->status != FINISH_STATE))
+        return 1;
+    return 0;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateSetDictionary(strm, dictionary, dictLength)
+    z_streamp strm;
+    const Bytef *dictionary;
+    uInt  dictLength;
+{
+    deflate_state *s;
+    uInt str, n;
+    int wrap;
+    unsigned avail;
+    z_const unsigned char *next;
+
+    if (deflateStateCheck(strm) || dictionary == Z_NULL)
+        return Z_STREAM_ERROR;
+    s = strm->state;
+    wrap = s->wrap;
+    if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead)
+        return Z_STREAM_ERROR;
+
+    /* when using zlib wrappers, compute Adler-32 for provided dictionary */
+    if (wrap == 1)
+        strm->adler = adler32(strm->adler, dictionary, dictLength);
+    s->wrap = 0;                    /* avoid computing Adler-32 in read_buf */
+
+    /* if dictionary would fill window, just replace the history */
+    if (dictLength >= s->w_size) {
+        if (wrap == 0) {            /* already empty otherwise */
+            CLEAR_HASH(s);
+            s->strstart = 0;
+            s->block_start = 0L;
+            s->insert = 0;
+        }
+        dictionary += dictLength - s->w_size;  /* use the tail */
+        dictLength = s->w_size;
+    }
+
+    /* insert dictionary into window and hash */
+    avail = strm->avail_in;
+    next = strm->next_in;
+    strm->avail_in = dictLength;
+    strm->next_in = (z_const Bytef *)dictionary;
+    fill_window(s);
+    while (s->lookahead >= MIN_MATCH) {
+        str = s->strstart;
+        n = s->lookahead - (MIN_MATCH-1);
+        do {
+            UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
+#ifndef FASTEST
+            s->prev[str & s->w_mask] = s->head[s->ins_h];
+#endif
+            s->head[s->ins_h] = (Pos)str;
+            str++;
+        } while (--n);
+        s->strstart = str;
+        s->lookahead = MIN_MATCH-1;
+        fill_window(s);
+    }
+    s->strstart += s->lookahead;
+    s->block_start = (long)s->strstart;
+    s->insert = s->lookahead;
+    s->lookahead = 0;
+    s->match_length = s->prev_length = MIN_MATCH-1;
+    s->match_available = 0;
+    strm->next_in = next;
+    strm->avail_in = avail;
+    s->wrap = wrap;
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateGetDictionary(strm, dictionary, dictLength)
+    z_streamp strm;
+    Bytef *dictionary;
+    uInt  *dictLength;
+{
+    deflate_state *s;
+    uInt len;
+
+    if (deflateStateCheck(strm))
+        return Z_STREAM_ERROR;
+    s = strm->state;
+    len = s->strstart + s->lookahead;
+    if (len > s->w_size)
+        len = s->w_size;
+    if (dictionary != Z_NULL && len)
+        zmemcpy(dictionary, s->window + s->strstart + s->lookahead - len, len);
+    if (dictLength != Z_NULL)
+        *dictLength = len;
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateResetKeep(strm)
+    z_streamp strm;
+{
+    deflate_state *s;
+
+    if (deflateStateCheck(strm)) {
+        return Z_STREAM_ERROR;
+    }
+
+    strm->total_in = strm->total_out = 0;
+    strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
+    strm->data_type = Z_UNKNOWN;
+
+    s = (deflate_state *)strm->state;
+    s->pending = 0;
+    s->pending_out = s->pending_buf;
+
+    if (s->wrap < 0) {
+        s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
+    }
+    s->status =
+#ifdef GZIP
+        s->wrap == 2 ? GZIP_STATE :
+#endif
+        INIT_STATE;
+    strm->adler =
+#ifdef GZIP
+        s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
+#endif
+        adler32(0L, Z_NULL, 0);
+    s->last_flush = -2;
+
+    _tr_init(s);
+
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateReset(strm)
+    z_streamp strm;
+{
+    int ret;
+
+    ret = deflateResetKeep(strm);
+    if (ret == Z_OK)
+        lm_init(strm->state);
+    return ret;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateSetHeader(strm, head)
+    z_streamp strm;
+    gz_headerp head;
+{
+    if (deflateStateCheck(strm) || strm->state->wrap != 2)
+        return Z_STREAM_ERROR;
+    strm->state->gzhead = head;
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflatePending(strm, pending, bits)
+    unsigned *pending;
+    int *bits;
+    z_streamp strm;
+{
+    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
+    if (pending != Z_NULL)
+        *pending = strm->state->pending;
+    if (bits != Z_NULL)
+        *bits = strm->state->bi_valid;
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflatePrime(strm, bits, value)
+    z_streamp strm;
+    int bits;
+    int value;
+{
+    deflate_state *s;
+    int put;
+
+    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
+    s = strm->state;
+    if (bits < 0 || bits > 16 ||
+        s->sym_buf < s->pending_out + ((Buf_size + 7) >> 3))
+        return Z_BUF_ERROR;
+    do {
+        put = Buf_size - s->bi_valid;
+        if (put > bits)
+            put = bits;
+        s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid);
+        s->bi_valid += put;
+        _tr_flush_bits(s);
+        value >>= put;
+        bits -= put;
+    } while (bits);
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateParams(strm, level, strategy)
+    z_streamp strm;
+    int level;
+    int strategy;
+{
+    deflate_state *s;
+    compress_func func;
+
+    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
+    s = strm->state;
+
+#ifdef FASTEST
+    if (level != 0) level = 1;
+#else
+    if (level == Z_DEFAULT_COMPRESSION) level = 6;
+#endif
+    if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) {
+        return Z_STREAM_ERROR;
+    }
+    func = configuration_table[s->level].func;
+
+    if ((strategy != s->strategy || func != configuration_table[level].func) &&
+        s->last_flush != -2) {
+        /* Flush the last buffer: */
+        int err = deflate(strm, Z_BLOCK);
+        if (err == Z_STREAM_ERROR)
+            return err;
+        if (strm->avail_in || (s->strstart - s->block_start) + s->lookahead)
+            return Z_BUF_ERROR;
+    }
+    if (s->level != level) {
+        if (s->level == 0 && s->matches != 0) {
+            if (s->matches == 1)
+                slide_hash(s);
+            else
+                CLEAR_HASH(s);
+            s->matches = 0;
+        }
+        s->level = level;
+        s->max_lazy_match   = configuration_table[level].max_lazy;
+        s->good_match       = configuration_table[level].good_length;
+        s->nice_match       = configuration_table[level].nice_length;
+        s->max_chain_length = configuration_table[level].max_chain;
+    }
+    s->strategy = strategy;
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)
+    z_streamp strm;
+    int good_length;
+    int max_lazy;
+    int nice_length;
+    int max_chain;
+{
+    deflate_state *s;
+
+    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
+    s = strm->state;
+    s->good_match = (uInt)good_length;
+    s->max_lazy_match = (uInt)max_lazy;
+    s->nice_match = nice_length;
+    s->max_chain_length = (uInt)max_chain;
+    return Z_OK;
+}
+
+/* =========================================================================
+ * For the default windowBits of 15 and memLevel of 8, this function returns a
+ * close to exact, as well as small, upper bound on the compressed size. This
+ * is an expansion of ~0.03%, plus a small constant.
+ *
+ * For any setting other than those defaults for windowBits and memLevel, one
+ * of two worst case bounds is returned. This is at most an expansion of ~4% or
+ * ~13%, plus a small constant.
+ *
+ * Both the 0.03% and 4% derive from the overhead of stored blocks. The first
+ * one is for stored blocks of 16383 bytes (memLevel == 8), whereas the second
+ * is for stored blocks of 127 bytes (the worst case memLevel == 1). The
+ * expansion results from five bytes of header for each stored block.
+ *
+ * The larger expansion of 13% results from a window size less than or equal to
+ * the symbols buffer size (windowBits <= memLevel + 7). In that case some of
+ * the data being compressed may have slid out of the sliding window, impeding
+ * a stored block from being emitted. Then the only choice is a fixed or
+ * dynamic block, where a fixed block limits the maximum expansion to 9 bits
+ * per 8-bit byte, plus 10 bits for every block. The smallest block size for
+ * which this can occur is 255 (memLevel == 2).
+ *
+ * Shifts are used to approximate divisions, for speed.
+ */
+uLong ZEXPORT deflateBound(strm, sourceLen)
+    z_streamp strm;
+    uLong sourceLen;
+{
+    deflate_state *s;
+    uLong fixedlen, storelen, wraplen;
+
+    /* upper bound for fixed blocks with 9-bit literals and length 255
+       (memLevel == 2, which is the lowest that may not use stored blocks) --
+       ~13% overhead plus a small constant */
+    fixedlen = sourceLen + (sourceLen >> 3) + (sourceLen >> 8) +
+               (sourceLen >> 9) + 4;
+
+    /* upper bound for stored blocks with length 127 (memLevel == 1) --
+       ~4% overhead plus a small constant */
+    storelen = sourceLen + (sourceLen >> 5) + (sourceLen >> 7) +
+               (sourceLen >> 11) + 7;
+
+    /* if can't get parameters, return larger bound plus a zlib wrapper */
+    if (deflateStateCheck(strm))
+        return (fixedlen > storelen ? fixedlen : storelen) + 6;
+
+    /* compute wrapper length */
+    s = strm->state;
+    switch (s->wrap) {
+    case 0:                                 /* raw deflate */
+        wraplen = 0;
+        break;
+    case 1:                                 /* zlib wrapper */
+        wraplen = 6 + (s->strstart ? 4 : 0);
+        break;
+#ifdef GZIP
+    case 2:                                 /* gzip wrapper */
+        wraplen = 18;
+        if (s->gzhead != Z_NULL) {          /* user-supplied gzip header */
+            Bytef *str;
+            if (s->gzhead->extra != Z_NULL)
+                wraplen += 2 + s->gzhead->extra_len;
+            str = s->gzhead->name;
+            if (str != Z_NULL)
+                do {
+                    wraplen++;
+                } while (*str++);
+            str = s->gzhead->comment;
+            if (str != Z_NULL)
+                do {
+                    wraplen++;
+                } while (*str++);
+            if (s->gzhead->hcrc)
+                wraplen += 2;
+        }
+        break;
+#endif
+    default:                                /* for compiler happiness */
+        wraplen = 6;
+    }
+
+    /* if not default parameters, return one of the conservative bounds */
+    if (s->w_bits != 15 || s->hash_bits != 8 + 7)
+        return (s->w_bits <= s->hash_bits ? fixedlen : storelen) + wraplen;
+
+    /* default settings: return tight bound for that case -- ~0.03% overhead
+       plus a small constant */
+    return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
+           (sourceLen >> 25) + 13 - 6 + wraplen;
+}
+
+/* =========================================================================
+ * Put a short in the pending buffer. The 16-bit value is put in MSB order.
+ * IN assertion: the stream state is correct and there is enough room in
+ * pending_buf.
+ */
+local void putShortMSB(s, b)
+    deflate_state *s;
+    uInt b;
+{
+    put_byte(s, (Byte)(b >> 8));
+    put_byte(s, (Byte)(b & 0xff));
+}
+
+/* =========================================================================
+ * Flush as much pending output as possible. All deflate() output, except for
+ * some deflate_stored() output, goes through this function so some
+ * applications may wish to modify it to avoid allocating a large
+ * strm->next_out buffer and copying into it. (See also read_buf()).
+ */
+local void flush_pending(strm)
+    z_streamp strm;
+{
+    unsigned len;
+    deflate_state *s = strm->state;
+
+    _tr_flush_bits(s);
+    len = s->pending;
+    if (len > strm->avail_out) len = strm->avail_out;
+    if (len == 0) return;
+
+    zmemcpy(strm->next_out, s->pending_out, len);
+    strm->next_out  += len;
+    s->pending_out  += len;
+    strm->total_out += len;
+    strm->avail_out -= len;
+    s->pending      -= len;
+    if (s->pending == 0) {
+        s->pending_out = s->pending_buf;
+    }
+}
+
+/* ===========================================================================
+ * Update the header CRC with the bytes s->pending_buf[beg..s->pending - 1].
+ */
+#define HCRC_UPDATE(beg) \
+    do { \
+        if (s->gzhead->hcrc && s->pending > (beg)) \
+            strm->adler = crc32(strm->adler, s->pending_buf + (beg), \
+                                s->pending - (beg)); \
+    } while (0)
+
+/* ========================================================================= */
+int ZEXPORT deflate(strm, flush)
+    z_streamp strm;
+    int flush;
+{
+    int old_flush; /* value of flush param for previous deflate call */
+    deflate_state *s;
+
+    if (deflateStateCheck(strm) || flush > Z_BLOCK || flush < 0) {
+        return Z_STREAM_ERROR;
+    }
+    s = strm->state;
+
+    if (strm->next_out == Z_NULL ||
+        (strm->avail_in != 0 && strm->next_in == Z_NULL) ||
+        (s->status == FINISH_STATE && flush != Z_FINISH)) {
+        ERR_RETURN(strm, Z_STREAM_ERROR);
+    }
+    if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
+
+    old_flush = s->last_flush;
+    s->last_flush = flush;
+
+    /* Flush as much pending output as possible */
+    if (s->pending != 0) {
+        flush_pending(strm);
+        if (strm->avail_out == 0) {
+            /* Since avail_out is 0, deflate will be called again with
+             * more output space, but possibly with both pending and
+             * avail_in equal to zero. There won't be anything to do,
+             * but this is not an error situation so make sure we
+             * return OK instead of BUF_ERROR at next call of deflate:
+             */
+            s->last_flush = -1;
+            return Z_OK;
+        }
+
+    /* Make sure there is something to do and avoid duplicate consecutive
+     * flushes. For repeated and useless calls with Z_FINISH, we keep
+     * returning Z_STREAM_END instead of Z_BUF_ERROR.
+     */
+    } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
+               flush != Z_FINISH) {
+        ERR_RETURN(strm, Z_BUF_ERROR);
+    }
+
+    /* User must not provide more input after the first FINISH: */
+    if (s->status == FINISH_STATE && strm->avail_in != 0) {
+        ERR_RETURN(strm, Z_BUF_ERROR);
+    }
+
+    /* Write the header */
+    if (s->status == INIT_STATE && s->wrap == 0)
+        s->status = BUSY_STATE;
+    if (s->status == INIT_STATE) {
+        /* zlib header */
+        uInt header = (Z_DEFLATED + ((s->w_bits - 8) << 4)) << 8;
+        uInt level_flags;
+
+        if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
+            level_flags = 0;
+        else if (s->level < 6)
+            level_flags = 1;
+        else if (s->level == 6)
+            level_flags = 2;
+        else
+            level_flags = 3;
+        header |= (level_flags << 6);
+        if (s->strstart != 0) header |= PRESET_DICT;
+        header += 31 - (header % 31);
+
+        putShortMSB(s, header);
+
+        /* Save the adler32 of the preset dictionary: */
+        if (s->strstart != 0) {
+            putShortMSB(s, (uInt)(strm->adler >> 16));
+            putShortMSB(s, (uInt)(strm->adler & 0xffff));
+        }
+        strm->adler = adler32(0L, Z_NULL, 0);
+        s->status = BUSY_STATE;
+
+        /* Compression must start with an empty pending buffer */
+        flush_pending(strm);
+        if (s->pending != 0) {
+            s->last_flush = -1;
+            return Z_OK;
+        }
+    }
+#ifdef GZIP
+    if (s->status == GZIP_STATE) {
+        /* gzip header */
+        strm->adler = crc32(0L, Z_NULL, 0);
+        put_byte(s, 31);
+        put_byte(s, 139);
+        put_byte(s, 8);
+        if (s->gzhead == Z_NULL) {
+            put_byte(s, 0);
+            put_byte(s, 0);
+            put_byte(s, 0);
+            put_byte(s, 0);
+            put_byte(s, 0);
+            put_byte(s, s->level == 9 ? 2 :
+                     (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
+                      4 : 0));
+            put_byte(s, OS_CODE);
+            s->status = BUSY_STATE;
+
+            /* Compression must start with an empty pending buffer */
+            flush_pending(strm);
+            if (s->pending != 0) {
+                s->last_flush = -1;
+                return Z_OK;
+            }
+        }
+        else {
+            put_byte(s, (s->gzhead->text ? 1 : 0) +
+                     (s->gzhead->hcrc ? 2 : 0) +
+                     (s->gzhead->extra == Z_NULL ? 0 : 4) +
+                     (s->gzhead->name == Z_NULL ? 0 : 8) +
+                     (s->gzhead->comment == Z_NULL ? 0 : 16)
+                     );
+            put_byte(s, (Byte)(s->gzhead->time & 0xff));
+            put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));
+            put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));
+            put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));
+            put_byte(s, s->level == 9 ? 2 :
+                     (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
+                      4 : 0));
+            put_byte(s, s->gzhead->os & 0xff);
+            if (s->gzhead->extra != Z_NULL) {
+                put_byte(s, s->gzhead->extra_len & 0xff);
+                put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
+            }
+            if (s->gzhead->hcrc)
+                strm->adler = crc32(strm->adler, s->pending_buf,
+                                    s->pending);
+            s->gzindex = 0;
+            s->status = EXTRA_STATE;
+        }
+    }
+    if (s->status == EXTRA_STATE) {
+        if (s->gzhead->extra != Z_NULL) {
+            ulg beg = s->pending;   /* start of bytes to update crc */
+            uInt left = (s->gzhead->extra_len & 0xffff) - s->gzindex;
+            while (s->pending + left > s->pending_buf_size) {
+                uInt copy = s->pending_buf_size - s->pending;
+                zmemcpy(s->pending_buf + s->pending,
+                        s->gzhead->extra + s->gzindex, copy);
+                s->pending = s->pending_buf_size;
+                HCRC_UPDATE(beg);
+                s->gzindex += copy;
+                flush_pending(strm);
+                if (s->pending != 0) {
+                    s->last_flush = -1;
+                    return Z_OK;
+                }
+                beg = 0;
+                left -= copy;
+            }
+            zmemcpy(s->pending_buf + s->pending,
+                    s->gzhead->extra + s->gzindex, left);
+            s->pending += left;
+            HCRC_UPDATE(beg);
+            s->gzindex = 0;
+        }
+        s->status = NAME_STATE;
+    }
+    if (s->status == NAME_STATE) {
+        if (s->gzhead->name != Z_NULL) {
+            ulg beg = s->pending;   /* start of bytes to update crc */
+            int val;
+            do {
+                if (s->pending == s->pending_buf_size) {
+                    HCRC_UPDATE(beg);
+                    flush_pending(strm);
+                    if (s->pending != 0) {
+                        s->last_flush = -1;
+                        return Z_OK;
+                    }
+                    beg = 0;
+                }
+                val = s->gzhead->name[s->gzindex++];
+                put_byte(s, val);
+            } while (val != 0);
+            HCRC_UPDATE(beg);
+            s->gzindex = 0;
+        }
+        s->status = COMMENT_STATE;
+    }
+    if (s->status == COMMENT_STATE) {
+        if (s->gzhead->comment != Z_NULL) {
+            ulg beg = s->pending;   /* start of bytes to update crc */
+            int val;
+            do {
+                if (s->pending == s->pending_buf_size) {
+                    HCRC_UPDATE(beg);
+                    flush_pending(strm);
+                    if (s->pending != 0) {
+                        s->last_flush = -1;
+                        return Z_OK;
+                    }
+                    beg = 0;
+                }
+                val = s->gzhead->comment[s->gzindex++];
+                put_byte(s, val);
+            } while (val != 0);
+            HCRC_UPDATE(beg);
+        }
+        s->status = HCRC_STATE;
+    }
+    if (s->status == HCRC_STATE) {
+        if (s->gzhead->hcrc) {
+            if (s->pending + 2 > s->pending_buf_size) {
+                flush_pending(strm);
+                if (s->pending != 0) {
+                    s->last_flush = -1;
+                    return Z_OK;
+                }
+            }
+            put_byte(s, (Byte)(strm->adler & 0xff));
+            put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
+            strm->adler = crc32(0L, Z_NULL, 0);
+        }
+        s->status = BUSY_STATE;
+
+        /* Compression must start with an empty pending buffer */
+        flush_pending(strm);
+        if (s->pending != 0) {
+            s->last_flush = -1;
+            return Z_OK;
+        }
+    }
+#endif
+
+    /* Start a new block or continue the current one.
+     */
+    if (strm->avail_in != 0 || s->lookahead != 0 ||
+        (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
+        block_state bstate;
+
+        bstate = s->level == 0 ? deflate_stored(s, flush) :
+                 s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
+                 s->strategy == Z_RLE ? deflate_rle(s, flush) :
+                 (*(configuration_table[s->level].func))(s, flush);
+
+        if (bstate == finish_started || bstate == finish_done) {
+            s->status = FINISH_STATE;
+        }
+        if (bstate == need_more || bstate == finish_started) {
+            if (strm->avail_out == 0) {
+                s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
+            }
+            return Z_OK;
+            /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
+             * of deflate should use the same flush parameter to make sure
+             * that the flush is complete. So we don't have to output an
+             * empty block here, this will be done at next call. This also
+             * ensures that for a very small output buffer, we emit at most
+             * one empty block.
+             */
+        }
+        if (bstate == block_done) {
+            if (flush == Z_PARTIAL_FLUSH) {
+                _tr_align(s);
+            } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
+                _tr_stored_block(s, (char*)0, 0L, 0);
+                /* For a full flush, this empty block will be recognized
+                 * as a special marker by inflate_sync().
+                 */
+                if (flush == Z_FULL_FLUSH) {
+                    CLEAR_HASH(s);             /* forget history */
+                    if (s->lookahead == 0) {
+                        s->strstart = 0;
+                        s->block_start = 0L;
+                        s->insert = 0;
+                    }
+                }
+            }
+            flush_pending(strm);
+            if (strm->avail_out == 0) {
+              s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
+              return Z_OK;
+            }
+        }
+    }
+
+    if (flush != Z_FINISH) return Z_OK;
+    if (s->wrap <= 0) return Z_STREAM_END;
+
+    /* Write the trailer */
+#ifdef GZIP
+    if (s->wrap == 2) {
+        put_byte(s, (Byte)(strm->adler & 0xff));
+        put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
+        put_byte(s, (Byte)((strm->adler >> 16) & 0xff));
+        put_byte(s, (Byte)((strm->adler >> 24) & 0xff));
+        put_byte(s, (Byte)(strm->total_in & 0xff));
+        put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));
+        put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));
+        put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));
+    }
+    else
+#endif
+    {
+        putShortMSB(s, (uInt)(strm->adler >> 16));
+        putShortMSB(s, (uInt)(strm->adler & 0xffff));
+    }
+    flush_pending(strm);
+    /* If avail_out is zero, the application will call deflate again
+     * to flush the rest.
+     */
+    if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */
+    return s->pending != 0 ? Z_OK : Z_STREAM_END;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateEnd(strm)
+    z_streamp strm;
+{
+    int status;
+
+    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
+
+    status = strm->state->status;
+
+    /* Deallocate in reverse order of allocations: */
+    TRY_FREE(strm, strm->state->pending_buf);
+    TRY_FREE(strm, strm->state->head);
+    TRY_FREE(strm, strm->state->prev);
+    TRY_FREE(strm, strm->state->window);
+
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+
+    return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
+}
+
+/* =========================================================================
+ * Copy the source state to the destination state.
+ * To simplify the source, this is not supported for 16-bit MSDOS (which
+ * doesn't have enough memory anyway to duplicate compression states).
+ */
+int ZEXPORT deflateCopy(dest, source)
+    z_streamp dest;
+    z_streamp source;
+{
+#ifdef MAXSEG_64K
+    return Z_STREAM_ERROR;
+#else
+    deflate_state *ds;
+    deflate_state *ss;
+
+
+    if (deflateStateCheck(source) || dest == Z_NULL) {
+        return Z_STREAM_ERROR;
+    }
+
+    ss = source->state;
+
+    zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
+
+    ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
+    if (ds == Z_NULL) return Z_MEM_ERROR;
+    dest->state = (struct internal_state FAR *) ds;
+    zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state));
+    ds->strm = dest;
+
+    ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
+    ds->prev   = (Posf *)  ZALLOC(dest, ds->w_size, sizeof(Pos));
+    ds->head   = (Posf *)  ZALLOC(dest, ds->hash_size, sizeof(Pos));
+    ds->pending_buf = (uchf *) ZALLOC(dest, ds->lit_bufsize, 4);
+
+    if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
+        ds->pending_buf == Z_NULL) {
+        deflateEnd (dest);
+        return Z_MEM_ERROR;
+    }
+    /* following zmemcpy do not work for 16-bit MSDOS */
+    zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
+    zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
+    zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
+    zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
+
+    ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
+    ds->sym_buf = ds->pending_buf + ds->lit_bufsize;
+
+    ds->l_desc.dyn_tree = ds->dyn_ltree;
+    ds->d_desc.dyn_tree = ds->dyn_dtree;
+    ds->bl_desc.dyn_tree = ds->bl_tree;
+
+    return Z_OK;
+#endif /* MAXSEG_64K */
+}
+
+/* ===========================================================================
+ * Read a new buffer from the current input stream, update the adler32
+ * and total number of bytes read.  All deflate() input goes through
+ * this function so some applications may wish to modify it to avoid
+ * allocating a large strm->next_in buffer and copying from it.
+ * (See also flush_pending()).
+ */
+local unsigned read_buf(strm, buf, size)
+    z_streamp strm;
+    Bytef *buf;
+    unsigned size;
+{
+    unsigned len = strm->avail_in;
+
+    if (len > size) len = size;
+    if (len == 0) return 0;
+
+    strm->avail_in  -= len;
+
+    zmemcpy(buf, strm->next_in, len);
+    if (strm->state->wrap == 1) {
+        strm->adler = adler32(strm->adler, buf, len);
+    }
+#ifdef GZIP
+    else if (strm->state->wrap == 2) {
+        strm->adler = crc32(strm->adler, buf, len);
+    }
+#endif
+    strm->next_in  += len;
+    strm->total_in += len;
+
+    return len;
+}
+
+/* ===========================================================================
+ * Initialize the "longest match" routines for a new zlib stream
+ */
+local void lm_init(s)
+    deflate_state *s;
+{
+    s->window_size = (ulg)2L*s->w_size;
+
+    CLEAR_HASH(s);
+
+    /* Set the default configuration parameters:
+     */
+    s->max_lazy_match   = configuration_table[s->level].max_lazy;
+    s->good_match       = configuration_table[s->level].good_length;
+    s->nice_match       = configuration_table[s->level].nice_length;
+    s->max_chain_length = configuration_table[s->level].max_chain;
+
+    s->strstart = 0;
+    s->block_start = 0L;
+    s->lookahead = 0;
+    s->insert = 0;
+    s->match_length = s->prev_length = MIN_MATCH-1;
+    s->match_available = 0;
+    s->ins_h = 0;
+}
+
+#ifndef FASTEST
+/* ===========================================================================
+ * Set match_start to the longest match starting at the given string and
+ * return its length. Matches shorter or equal to prev_length are discarded,
+ * in which case the result is equal to prev_length and match_start is
+ * garbage.
+ * IN assertions: cur_match is the head of the hash chain for the current
+ *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+ * OUT assertion: the match length is not greater than s->lookahead.
+ */
+local uInt longest_match(s, cur_match)
+    deflate_state *s;
+    IPos cur_match;                             /* current match */
+{
+    unsigned chain_length = s->max_chain_length;/* max hash chain length */
+    register Bytef *scan = s->window + s->strstart; /* current string */
+    register Bytef *match;                      /* matched string */
+    register int len;                           /* length of current match */
+    int best_len = (int)s->prev_length;         /* best match length so far */
+    int nice_match = s->nice_match;             /* stop if match long enough */
+    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
+        s->strstart - (IPos)MAX_DIST(s) : NIL;
+    /* Stop when cur_match becomes <= limit. To simplify the code,
+     * we prevent matches with the string of window index 0.
+     */
+    Posf *prev = s->prev;
+    uInt wmask = s->w_mask;
+
+#ifdef UNALIGNED_OK
+    /* Compare two bytes at a time. Note: this is not always beneficial.
+     * Try with and without -DUNALIGNED_OK to check.
+     */
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
+    register ush scan_start = *(ushf*)scan;
+    register ush scan_end   = *(ushf*)(scan + best_len - 1);
+#else
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+    register Byte scan_end1  = scan[best_len - 1];
+    register Byte scan_end   = scan[best_len];
+#endif
+
+    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+     * It is easy to get rid of this optimization if necessary.
+     */
+    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+    /* Do not waste too much time if we already have a good match: */
+    if (s->prev_length >= s->good_match) {
+        chain_length >>= 2;
+    }
+    /* Do not look for matches beyond the end of the input. This is necessary
+     * to make deflate deterministic.
+     */
+    if ((uInt)nice_match > s->lookahead) nice_match = (int)s->lookahead;
+
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "need lookahead");
+
+    do {
+        Assert(cur_match < s->strstart, "no future");
+        match = s->window + cur_match;
+
+        /* Skip to next match if the match length cannot increase
+         * or if the match length is less than 2.  Note that the checks below
+         * for insufficient lookahead only occur occasionally for performance
+         * reasons.  Therefore uninitialized memory will be accessed, and
+         * conditional jumps will be made that depend on those values.
+         * However the length of the match is limited to the lookahead, so
+         * the output of deflate is not affected by the uninitialized values.
+         */
+#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
+        /* This code assumes sizeof(unsigned short) == 2. Do not use
+         * UNALIGNED_OK if your compiler uses a different size.
+         */
+        if (*(ushf*)(match + best_len - 1) != scan_end ||
+            *(ushf*)match != scan_start) continue;
+
+        /* It is not necessary to compare scan[2] and match[2] since they are
+         * always equal when the other bytes match, given that the hash keys
+         * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
+         * strstart + 3, + 5, up to strstart + 257. We check for insufficient
+         * lookahead only every 4th comparison; the 128th check will be made
+         * at strstart + 257. If MAX_MATCH-2 is not a multiple of 8, it is
+         * necessary to put more guard bytes at the end of the window, or
+         * to check more often for insufficient lookahead.
+         */
+        Assert(scan[2] == match[2], "scan[2]?");
+        scan++, match++;
+        do {
+        } while (*(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
+                 scan < strend);
+        /* The funny "do {}" generates better code on most compilers */
+
+        /* Here, scan <= window + strstart + 257 */
+        Assert(scan <= s->window + (unsigned)(s->window_size - 1),
+               "wild scan");
+        if (*scan == *match) scan++;
+
+        len = (MAX_MATCH - 1) - (int)(strend - scan);
+        scan = strend - (MAX_MATCH-1);
+
+#else /* UNALIGNED_OK */
+
+        if (match[best_len]     != scan_end  ||
+            match[best_len - 1] != scan_end1 ||
+            *match              != *scan     ||
+            *++match            != scan[1])      continue;
+
+        /* The check at best_len - 1 can be removed because it will be made
+         * again later. (This heuristic is not always a win.)
+         * It is not necessary to compare scan[2] and match[2] since they
+         * are always equal when the other bytes match, given that
+         * the hash keys are equal and that HASH_BITS >= 8.
+         */
+        scan += 2, match++;
+        Assert(*scan == *match, "match[2]?");
+
+        /* We check for insufficient lookahead only every 8th comparison;
+         * the 256th check will be made at strstart + 258.
+         */
+        do {
+        } while (*++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 scan < strend);
+
+        Assert(scan <= s->window + (unsigned)(s->window_size - 1),
+               "wild scan");
+
+        len = MAX_MATCH - (int)(strend - scan);
+        scan = strend - MAX_MATCH;
+
+#endif /* UNALIGNED_OK */
+
+        if (len > best_len) {
+            s->match_start = cur_match;
+            best_len = len;
+            if (len >= nice_match) break;
+#ifdef UNALIGNED_OK
+            scan_end = *(ushf*)(scan + best_len - 1);
+#else
+            scan_end1  = scan[best_len - 1];
+            scan_end   = scan[best_len];
+#endif
+        }
+    } while ((cur_match = prev[cur_match & wmask]) > limit
+             && --chain_length != 0);
+
+    if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
+    return s->lookahead;
+}
+
+#else /* FASTEST */
+
+/* ---------------------------------------------------------------------------
+ * Optimized version for FASTEST only
+ */
+local uInt longest_match(s, cur_match)
+    deflate_state *s;
+    IPos cur_match;                             /* current match */
+{
+    register Bytef *scan = s->window + s->strstart; /* current string */
+    register Bytef *match;                       /* matched string */
+    register int len;                           /* length of current match */
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+
+    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+     * It is easy to get rid of this optimization if necessary.
+     */
+    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "need lookahead");
+
+    Assert(cur_match < s->strstart, "no future");
+
+    match = s->window + cur_match;
+
+    /* Return failure if the match length is less than 2:
+     */
+    if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
+
+    /* The check at best_len - 1 can be removed because it will be made
+     * again later. (This heuristic is not always a win.)
+     * It is not necessary to compare scan[2] and match[2] since they
+     * are always equal when the other bytes match, given that
+     * the hash keys are equal and that HASH_BITS >= 8.
+     */
+    scan += 2, match += 2;
+    Assert(*scan == *match, "match[2]?");
+
+    /* We check for insufficient lookahead only every 8th comparison;
+     * the 256th check will be made at strstart + 258.
+     */
+    do {
+    } while (*++scan == *++match && *++scan == *++match &&
+             *++scan == *++match && *++scan == *++match &&
+             *++scan == *++match && *++scan == *++match &&
+             *++scan == *++match && *++scan == *++match &&
+             scan < strend);
+
+    Assert(scan <= s->window + (unsigned)(s->window_size - 1), "wild scan");
+
+    len = MAX_MATCH - (int)(strend - scan);
+
+    if (len < MIN_MATCH) return MIN_MATCH - 1;
+
+    s->match_start = cur_match;
+    return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;
+}
+
+#endif /* FASTEST */
+
+#ifdef ZLIB_DEBUG
+
+#define EQUAL 0
+/* result of memcmp for equal strings */
+
+/* ===========================================================================
+ * Check that the match at match_start is indeed a match.
+ */
+local void check_match(s, start, match, length)
+    deflate_state *s;
+    IPos start, match;
+    int length;
+{
+    /* check that the match is indeed a match */
+    if (zmemcmp(s->window + match,
+                s->window + start, length) != EQUAL) {
+        fprintf(stderr, " start %u, match %u, length %d\n",
+                start, match, length);
+        do {
+            fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
+        } while (--length != 0);
+        z_error("invalid match");
+    }
+    if (z_verbose > 1) {
+        fprintf(stderr,"\\[%d,%d]", start - match, length);
+        do { putc(s->window[start++], stderr); } while (--length != 0);
+    }
+}
+#else
+#  define check_match(s, start, match, length)
+#endif /* ZLIB_DEBUG */
+
+/* ===========================================================================
+ * Fill the window when the lookahead becomes insufficient.
+ * Updates strstart and lookahead.
+ *
+ * IN assertion: lookahead < MIN_LOOKAHEAD
+ * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+ *    At least one byte has been read, or avail_in == 0; reads are
+ *    performed for at least two bytes (required for the zip translate_eol
+ *    option -- not supported here).
+ */
+local void fill_window(s)
+    deflate_state *s;
+{
+    unsigned n;
+    unsigned more;    /* Amount of free space at the end of the window. */
+    uInt wsize = s->w_size;
+
+    Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
+
+    do {
+        more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
+
+        /* Deal with !@#$% 64K limit: */
+        if (sizeof(int) <= 2) {
+            if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
+                more = wsize;
+
+            } else if (more == (unsigned)(-1)) {
+                /* Very unlikely, but possible on 16 bit machine if
+                 * strstart == 0 && lookahead == 1 (input done a byte at time)
+                 */
+                more--;
+            }
+        }
+
+        /* If the window is almost full and there is insufficient lookahead,
+         * move the upper half to the lower one to make room in the upper half.
+         */
+        if (s->strstart >= wsize + MAX_DIST(s)) {
+
+            zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
+            s->match_start -= wsize;
+            s->strstart    -= wsize; /* we now have strstart >= MAX_DIST */
+            s->block_start -= (long) wsize;
+            if (s->insert > s->strstart)
+                s->insert = s->strstart;
+            slide_hash(s);
+            more += wsize;
+        }
+        if (s->strm->avail_in == 0) break;
+
+        /* If there was no sliding:
+         *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+         *    more == window_size - lookahead - strstart
+         * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+         * => more >= window_size - 2*WSIZE + 2
+         * In the BIG_MEM or MMAP case (not yet supported),
+         *   window_size == input_size + MIN_LOOKAHEAD  &&
+         *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+         * Otherwise, window_size == 2*WSIZE so more >= 2.
+         * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+         */
+        Assert(more >= 2, "more < 2");
+
+        n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
+        s->lookahead += n;
+
+        /* Initialize the hash value now that we have some input: */
+        if (s->lookahead + s->insert >= MIN_MATCH) {
+            uInt str = s->strstart - s->insert;
+            s->ins_h = s->window[str];
+            UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
+#if MIN_MATCH != 3
+            Call UPDATE_HASH() MIN_MATCH-3 more times
+#endif
+            while (s->insert) {
+                UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
+#ifndef FASTEST
+                s->prev[str & s->w_mask] = s->head[s->ins_h];
+#endif
+                s->head[s->ins_h] = (Pos)str;
+                str++;
+                s->insert--;
+                if (s->lookahead + s->insert < MIN_MATCH)
+                    break;
+            }
+        }
+        /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+         * but this is not important since only literal bytes will be emitted.
+         */
+
+    } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
+
+    /* If the WIN_INIT bytes after the end of the current data have never been
+     * written, then zero those bytes in order to avoid memory check reports of
+     * the use of uninitialized (or uninitialised as Julian writes) bytes by
+     * the longest match routines.  Update the high water mark for the next
+     * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
+     * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
+     */
+    if (s->high_water < s->window_size) {
+        ulg curr = s->strstart + (ulg)(s->lookahead);
+        ulg init;
+
+        if (s->high_water < curr) {
+            /* Previous high water mark below current data -- zero WIN_INIT
+             * bytes or up to end of window, whichever is less.
+             */
+            init = s->window_size - curr;
+            if (init > WIN_INIT)
+                init = WIN_INIT;
+            zmemzero(s->window + curr, (unsigned)init);
+            s->high_water = curr + init;
+        }
+        else if (s->high_water < (ulg)curr + WIN_INIT) {
+            /* High water mark at or above current data, but below current data
+             * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
+             * to end of window, whichever is less.
+             */
+            init = (ulg)curr + WIN_INIT - s->high_water;
+            if (init > s->window_size - s->high_water)
+                init = s->window_size - s->high_water;
+            zmemzero(s->window + s->high_water, (unsigned)init);
+            s->high_water += init;
+        }
+    }
+
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "not enough room for search");
+}
+
+/* ===========================================================================
+ * Flush the current block, with given end-of-file flag.
+ * IN assertion: strstart is set to the end of the current match.
+ */
+#define FLUSH_BLOCK_ONLY(s, last) { \
+   _tr_flush_block(s, (s->block_start >= 0L ? \
+                   (charf *)&s->window[(unsigned)s->block_start] : \
+                   (charf *)Z_NULL), \
+                (ulg)((long)s->strstart - s->block_start), \
+                (last)); \
+   s->block_start = s->strstart; \
+   flush_pending(s->strm); \
+   Tracev((stderr,"[FLUSH]")); \
+}
+
+/* Same but force premature exit if necessary. */
+#define FLUSH_BLOCK(s, last) { \
+   FLUSH_BLOCK_ONLY(s, last); \
+   if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \
+}
+
+/* Maximum stored block length in deflate format (not including header). */
+#define MAX_STORED 65535
+
+/* Minimum of a and b. */
+#ifndef MIN
+#define MIN(a, b) ((a) > (b) ? (b) : (a))
+#endif
+
+/* ===========================================================================
+ * Copy without compression as much as possible from the input stream, return
+ * the current block state.
+ *
+ * In case deflateParams() is used to later switch to a non-zero compression
+ * level, s->matches (otherwise unused when storing) keeps track of the number
+ * of hash table slides to perform. If s->matches is 1, then one hash table
+ * slide will be done when switching. If s->matches is 2, the maximum value
+ * allowed here, then the hash table will be cleared, since two or more slides
+ * is the same as a clear.
+ *
+ * deflate_stored() is written to minimize the number of times an input byte is
+ * copied. It is most efficient with large input and output buffers, which
+ * maximizes the opportunities to have a single copy from next_in to next_out.
+ */
+local block_state deflate_stored(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    /* Smallest worthy block size when not flushing or finishing. By default
+     * this is 32K. This can be as small as 507 bytes for memLevel == 1. For
+     * large input and output buffers, the stored block size will be larger.
+     */
+    unsigned min_block = MIN(s->pending_buf_size - 5, s->w_size);
+
+    /* Copy as many min_block or larger stored blocks directly to next_out as
+     * possible. If flushing, copy the remaining available input to next_out as
+     * stored blocks, if there is enough space.
+     */
+    unsigned len, left, have, last = 0;
+    unsigned used = s->strm->avail_in;
+    do {
+        /* Set len to the maximum size block that we can copy directly with the
+         * available input data and output space. Set left to how much of that
+         * would be copied from what's left in the window.
+         */
+        len = MAX_STORED;       /* maximum deflate stored block length */
+        have = (s->bi_valid + 42) >> 3;         /* number of header bytes */
+        if (s->strm->avail_out < have)          /* need room for header */
+            break;
+            /* maximum stored block length that will fit in avail_out: */
+        have = s->strm->avail_out - have;
+        left = s->strstart - s->block_start;    /* bytes left in window */
+        if (len > (ulg)left + s->strm->avail_in)
+            len = left + s->strm->avail_in;     /* limit len to the input */
+        if (len > have)
+            len = have;                         /* limit len to the output */
+
+        /* If the stored block would be less than min_block in length, or if
+         * unable to copy all of the available input when flushing, then try
+         * copying to the window and the pending buffer instead. Also don't
+         * write an empty block when flushing -- deflate() does that.
+         */
+        if (len < min_block && ((len == 0 && flush != Z_FINISH) ||
+                                flush == Z_NO_FLUSH ||
+                                len != left + s->strm->avail_in))
+            break;
+
+        /* Make a dummy stored block in pending to get the header bytes,
+         * including any pending bits. This also updates the debugging counts.
+         */
+        last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0;
+        _tr_stored_block(s, (char *)0, 0L, last);
+
+        /* Replace the lengths in the dummy stored block with len. */
+        s->pending_buf[s->pending - 4] = len;
+        s->pending_buf[s->pending - 3] = len >> 8;
+        s->pending_buf[s->pending - 2] = ~len;
+        s->pending_buf[s->pending - 1] = ~len >> 8;
+
+        /* Write the stored block header bytes. */
+        flush_pending(s->strm);
+
+#ifdef ZLIB_DEBUG
+        /* Update debugging counts for the data about to be copied. */
+        s->compressed_len += len << 3;
+        s->bits_sent += len << 3;
+#endif
+
+        /* Copy uncompressed bytes from the window to next_out. */
+        if (left) {
+            if (left > len)
+                left = len;
+            zmemcpy(s->strm->next_out, s->window + s->block_start, left);
+            s->strm->next_out += left;
+            s->strm->avail_out -= left;
+            s->strm->total_out += left;
+            s->block_start += left;
+            len -= left;
+        }
+
+        /* Copy uncompressed bytes directly from next_in to next_out, updating
+         * the check value.
+         */
+        if (len) {
+            read_buf(s->strm, s->strm->next_out, len);
+            s->strm->next_out += len;
+            s->strm->avail_out -= len;
+            s->strm->total_out += len;
+        }
+    } while (last == 0);
+
+    /* Update the sliding window with the last s->w_size bytes of the copied
+     * data, or append all of the copied data to the existing window if less
+     * than s->w_size bytes were copied. Also update the number of bytes to
+     * insert in the hash tables, in the event that deflateParams() switches to
+     * a non-zero compression level.
+     */
+    used -= s->strm->avail_in;      /* number of input bytes directly copied */
+    if (used) {
+        /* If any input was used, then no unused input remains in the window,
+         * therefore s->block_start == s->strstart.
+         */
+        if (used >= s->w_size) {    /* supplant the previous history */
+            s->matches = 2;         /* clear hash */
+            zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);
+            s->strstart = s->w_size;
+            s->insert = s->strstart;
+        }
+        else {
+            if (s->window_size - s->strstart <= used) {
+                /* Slide the window down. */
+                s->strstart -= s->w_size;
+                zmemcpy(s->window, s->window + s->w_size, s->strstart);
+                if (s->matches < 2)
+                    s->matches++;   /* add a pending slide_hash() */
+                if (s->insert > s->strstart)
+                    s->insert = s->strstart;
+            }
+            zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);
+            s->strstart += used;
+            s->insert += MIN(used, s->w_size - s->insert);
+        }
+        s->block_start = s->strstart;
+    }
+    if (s->high_water < s->strstart)
+        s->high_water = s->strstart;
+
+    /* If the last block was written to next_out, then done. */
+    if (last)
+        return finish_done;
+
+    /* If flushing and all input has been consumed, then done. */
+    if (flush != Z_NO_FLUSH && flush != Z_FINISH &&
+        s->strm->avail_in == 0 && (long)s->strstart == s->block_start)
+        return block_done;
+
+    /* Fill the window with any remaining input. */
+    have = s->window_size - s->strstart;
+    if (s->strm->avail_in > have && s->block_start >= (long)s->w_size) {
+        /* Slide the window down. */
+        s->block_start -= s->w_size;
+        s->strstart -= s->w_size;
+        zmemcpy(s->window, s->window + s->w_size, s->strstart);
+        if (s->matches < 2)
+            s->matches++;           /* add a pending slide_hash() */
+        have += s->w_size;          /* more space now */
+        if (s->insert > s->strstart)
+            s->insert = s->strstart;
+    }
+    if (have > s->strm->avail_in)
+        have = s->strm->avail_in;
+    if (have) {
+        read_buf(s->strm, s->window + s->strstart, have);
+        s->strstart += have;
+        s->insert += MIN(have, s->w_size - s->insert);
+    }
+    if (s->high_water < s->strstart)
+        s->high_water = s->strstart;
+
+    /* There was not enough avail_out to write a complete worthy or flushed
+     * stored block to next_out. Write a stored block to pending instead, if we
+     * have enough input for a worthy block, or if flushing and there is enough
+     * room for the remaining input as a stored block in the pending buffer.
+     */
+    have = (s->bi_valid + 42) >> 3;         /* number of header bytes */
+        /* maximum stored block length that will fit in pending: */
+    have = MIN(s->pending_buf_size - have, MAX_STORED);
+    min_block = MIN(have, s->w_size);
+    left = s->strstart - s->block_start;
+    if (left >= min_block ||
+        ((left || flush == Z_FINISH) && flush != Z_NO_FLUSH &&
+         s->strm->avail_in == 0 && left <= have)) {
+        len = MIN(left, have);
+        last = flush == Z_FINISH && s->strm->avail_in == 0 &&
+               len == left ? 1 : 0;
+        _tr_stored_block(s, (charf *)s->window + s->block_start, len, last);
+        s->block_start += len;
+        flush_pending(s->strm);
+    }
+
+    /* We've done all we can with the available input and output. */
+    return last ? finish_started : need_more;
+}
+
+/* ===========================================================================
+ * Compress as much as possible from the input stream, return the current
+ * block state.
+ * This function does not perform lazy evaluation of matches and inserts
+ * new strings in the dictionary only for unmatched strings or for short
+ * matches. It is used only for the fast compression options.
+ */
+local block_state deflate_fast(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    IPos hash_head;       /* head of the hash chain */
+    int bflush;           /* set if current block must be flushed */
+
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s->lookahead < MIN_LOOKAHEAD) {
+            fill_window(s);
+            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
+                return need_more;
+            }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart + 2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        hash_head = NIL;
+        if (s->lookahead >= MIN_MATCH) {
+            INSERT_STRING(s, s->strstart, hash_head);
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         * At this point we have always match_length < MIN_MATCH
+         */
+        if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
+            /* To simplify the code, we prevent matches with the string
+             * of window index 0 (in particular we have to avoid a match
+             * of the string with itself at the start of the input file).
+             */
+            s->match_length = longest_match (s, hash_head);
+            /* longest_match() sets match_start */
+        }
+        if (s->match_length >= MIN_MATCH) {
+            check_match(s, s->strstart, s->match_start, s->match_length);
+
+            _tr_tally_dist(s, s->strstart - s->match_start,
+                           s->match_length - MIN_MATCH, bflush);
+
+            s->lookahead -= s->match_length;
+
+            /* Insert new strings in the hash table only if the match length
+             * is not too large. This saves time but degrades compression.
+             */
+#ifndef FASTEST
+            if (s->match_length <= s->max_insert_length &&
+                s->lookahead >= MIN_MATCH) {
+                s->match_length--; /* string at strstart already in table */
+                do {
+                    s->strstart++;
+                    INSERT_STRING(s, s->strstart, hash_head);
+                    /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+                     * always MIN_MATCH bytes ahead.
+                     */
+                } while (--s->match_length != 0);
+                s->strstart++;
+            } else
+#endif
+            {
+                s->strstart += s->match_length;
+                s->match_length = 0;
+                s->ins_h = s->window[s->strstart];
+                UPDATE_HASH(s, s->ins_h, s->window[s->strstart + 1]);
+#if MIN_MATCH != 3
+                Call UPDATE_HASH() MIN_MATCH-3 more times
+#endif
+                /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+                 * matter since it will be recomputed at next deflate call.
+                 */
+            }
+        } else {
+            /* No match, output a literal byte */
+            Tracevv((stderr,"%c", s->window[s->strstart]));
+            _tr_tally_lit(s, s->window[s->strstart], bflush);
+            s->lookahead--;
+            s->strstart++;
+        }
+        if (bflush) FLUSH_BLOCK(s, 0);
+    }
+    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->sym_next)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
+}
+
+#ifndef FASTEST
+/* ===========================================================================
+ * Same as above, but achieves better compression. We use a lazy
+ * evaluation for matches: a match is finally adopted only if there is
+ * no better match at the next window position.
+ */
+local block_state deflate_slow(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    IPos hash_head;          /* head of hash chain */
+    int bflush;              /* set if current block must be flushed */
+
+    /* Process the input block. */
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s->lookahead < MIN_LOOKAHEAD) {
+            fill_window(s);
+            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
+                return need_more;
+            }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart + 2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        hash_head = NIL;
+        if (s->lookahead >= MIN_MATCH) {
+            INSERT_STRING(s, s->strstart, hash_head);
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         */
+        s->prev_length = s->match_length, s->prev_match = s->match_start;
+        s->match_length = MIN_MATCH-1;
+
+        if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
+            s->strstart - hash_head <= MAX_DIST(s)) {
+            /* To simplify the code, we prevent matches with the string
+             * of window index 0 (in particular we have to avoid a match
+             * of the string with itself at the start of the input file).
+             */
+            s->match_length = longest_match (s, hash_head);
+            /* longest_match() sets match_start */
+
+            if (s->match_length <= 5 && (s->strategy == Z_FILTERED
+#if TOO_FAR <= 32767
+                || (s->match_length == MIN_MATCH &&
+                    s->strstart - s->match_start > TOO_FAR)
+#endif
+                )) {
+
+                /* If prev_match is also MIN_MATCH, match_start is garbage
+                 * but we will ignore the current match anyway.
+                 */
+                s->match_length = MIN_MATCH-1;
+            }
+        }
+        /* If there was a match at the previous step and the current
+         * match is not better, output the previous match:
+         */
+        if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
+            uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
+            /* Do not insert strings in hash table beyond this. */
+
+            check_match(s, s->strstart - 1, s->prev_match, s->prev_length);
+
+            _tr_tally_dist(s, s->strstart - 1 - s->prev_match,
+                           s->prev_length - MIN_MATCH, bflush);
+
+            /* Insert in hash table all strings up to the end of the match.
+             * strstart - 1 and strstart are already inserted. If there is not
+             * enough lookahead, the last two strings are not inserted in
+             * the hash table.
+             */
+            s->lookahead -= s->prev_length - 1;
+            s->prev_length -= 2;
+            do {
+                if (++s->strstart <= max_insert) {
+                    INSERT_STRING(s, s->strstart, hash_head);
+                }
+            } while (--s->prev_length != 0);
+            s->match_available = 0;
+            s->match_length = MIN_MATCH-1;
+            s->strstart++;
+
+            if (bflush) FLUSH_BLOCK(s, 0);
+
+        } else if (s->match_available) {
+            /* If there was no match at the previous position, output a
+             * single literal. If there was a match but the current match
+             * is longer, truncate the previous match to a single literal.
+             */
+            Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+            _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
+            if (bflush) {
+                FLUSH_BLOCK_ONLY(s, 0);
+            }
+            s->strstart++;
+            s->lookahead--;
+            if (s->strm->avail_out == 0) return need_more;
+        } else {
+            /* There is no previous match to compare with, wait for
+             * the next step to decide.
+             */
+            s->match_available = 1;
+            s->strstart++;
+            s->lookahead--;
+        }
+    }
+    Assert (flush != Z_NO_FLUSH, "no flush?");
+    if (s->match_available) {
+        Tracevv((stderr,"%c", s->window[s->strstart - 1]));
+        _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
+        s->match_available = 0;
+    }
+    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->sym_next)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
+}
+#endif /* FASTEST */
+
+/* ===========================================================================
+ * For Z_RLE, simply look for runs of bytes, generate matches only of distance
+ * one.  Do not maintain a hash table.  (It will be regenerated if this run of
+ * deflate switches away from Z_RLE.)
+ */
+local block_state deflate_rle(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    int bflush;             /* set if current block must be flushed */
+    uInt prev;              /* byte at distance one to match */
+    Bytef *scan, *strend;   /* scan goes up to strend for length of run */
+
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the longest run, plus one for the unrolled loop.
+         */
+        if (s->lookahead <= MAX_MATCH) {
+            fill_window(s);
+            if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) {
+                return need_more;
+            }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* See how many times the previous byte repeats */
+        s->match_length = 0;
+        if (s->lookahead >= MIN_MATCH && s->strstart > 0) {
+            scan = s->window + s->strstart - 1;
+            prev = *scan;
+            if (prev == *++scan && prev == *++scan && prev == *++scan) {
+                strend = s->window + s->strstart + MAX_MATCH;
+                do {
+                } while (prev == *++scan && prev == *++scan &&
+                         prev == *++scan && prev == *++scan &&
+                         prev == *++scan && prev == *++scan &&
+                         prev == *++scan && prev == *++scan &&
+                         scan < strend);
+                s->match_length = MAX_MATCH - (uInt)(strend - scan);
+                if (s->match_length > s->lookahead)
+                    s->match_length = s->lookahead;
+            }
+            Assert(scan <= s->window + (uInt)(s->window_size - 1),
+                   "wild scan");
+        }
+
+        /* Emit match if have run of MIN_MATCH or longer, else emit literal */
+        if (s->match_length >= MIN_MATCH) {
+            check_match(s, s->strstart, s->strstart - 1, s->match_length);
+
+            _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush);
+
+            s->lookahead -= s->match_length;
+            s->strstart += s->match_length;
+            s->match_length = 0;
+        } else {
+            /* No match, output a literal byte */
+            Tracevv((stderr,"%c", s->window[s->strstart]));
+            _tr_tally_lit(s, s->window[s->strstart], bflush);
+            s->lookahead--;
+            s->strstart++;
+        }
+        if (bflush) FLUSH_BLOCK(s, 0);
+    }
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->sym_next)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
+}
+
+/* ===========================================================================
+ * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
+ * (It will be regenerated if this run of deflate switches away from Huffman.)
+ */
+local block_state deflate_huff(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    int bflush;             /* set if current block must be flushed */
+
+    for (;;) {
+        /* Make sure that we have a literal to write. */
+        if (s->lookahead == 0) {
+            fill_window(s);
+            if (s->lookahead == 0) {
+                if (flush == Z_NO_FLUSH)
+                    return need_more;
+                break;      /* flush the current block */
+            }
+        }
+
+        /* Output a literal byte */
+        s->match_length = 0;
+        Tracevv((stderr,"%c", s->window[s->strstart]));
+        _tr_tally_lit(s, s->window[s->strstart], bflush);
+        s->lookahead--;
+        s->strstart++;
+        if (bflush) FLUSH_BLOCK(s, 0);
+    }
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->sym_next)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
+}
diff --git a/lib/zlib/deflate.h b/lib/zlib/deflate.h
new file mode 100644
index 0000000..1a06cd5
--- /dev/null
+++ b/lib/zlib/deflate.h
@@ -0,0 +1,346 @@
+/* deflate.h -- internal compression state
+ * Copyright (C) 1995-2018 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id$ */
+
+#ifndef DEFLATE_H
+#define DEFLATE_H
+
+#include "zutil.h"
+
+/* define NO_GZIP when compiling if you want to disable gzip header and
+   trailer creation by deflate().  NO_GZIP would be used to avoid linking in
+   the crc code when it is not needed.  For shared libraries, gzip encoding
+   should be left enabled. */
+#ifndef NO_GZIP
+#  define GZIP
+#endif
+
+/* ===========================================================================
+ * Internal compression state.
+ */
+
+#define LENGTH_CODES 29
+/* number of length codes, not counting the special END_BLOCK code */
+
+#define LITERALS  256
+/* number of literal bytes 0..255 */
+
+#define L_CODES (LITERALS+1+LENGTH_CODES)
+/* number of Literal or Length codes, including the END_BLOCK code */
+
+#define D_CODES   30
+/* number of distance codes */
+
+#define BL_CODES  19
+/* number of codes used to transfer the bit lengths */
+
+#define HEAP_SIZE (2*L_CODES+1)
+/* maximum heap size */
+
+#define MAX_BITS 15
+/* All codes must not exceed MAX_BITS bits */
+
+#define Buf_size 16
+/* size of bit buffer in bi_buf */
+
+#define INIT_STATE    42    /* zlib header -> BUSY_STATE */
+#ifdef GZIP
+#  define GZIP_STATE  57    /* gzip header -> BUSY_STATE | EXTRA_STATE */
+#endif
+#define EXTRA_STATE   69    /* gzip extra block -> NAME_STATE */
+#define NAME_STATE    73    /* gzip file name -> COMMENT_STATE */
+#define COMMENT_STATE 91    /* gzip comment -> HCRC_STATE */
+#define HCRC_STATE   103    /* gzip header CRC -> BUSY_STATE */
+#define BUSY_STATE   113    /* deflate -> FINISH_STATE */
+#define FINISH_STATE 666    /* stream complete */
+/* Stream status */
+
+
+/* Data structure describing a single value and its code string. */
+typedef struct ct_data_s {
+    union {
+        ush  freq;       /* frequency count */
+        ush  code;       /* bit string */
+    } fc;
+    union {
+        ush  dad;        /* father node in Huffman tree */
+        ush  len;        /* length of bit string */
+    } dl;
+} FAR ct_data;
+
+#define Freq fc.freq
+#define Code fc.code
+#define Dad  dl.dad
+#define Len  dl.len
+
+typedef struct static_tree_desc_s  static_tree_desc;
+
+typedef struct tree_desc_s {
+    ct_data *dyn_tree;           /* the dynamic tree */
+    int     max_code;            /* largest code with non zero frequency */
+    const static_tree_desc *stat_desc;  /* the corresponding static tree */
+} FAR tree_desc;
+
+typedef ush Pos;
+typedef Pos FAR Posf;
+typedef unsigned IPos;
+
+/* A Pos is an index in the character window. We use short instead of int to
+ * save space in the various tables. IPos is used only for parameter passing.
+ */
+
+typedef struct internal_state {
+    z_streamp strm;      /* pointer back to this zlib stream */
+    int   status;        /* as the name implies */
+    Bytef *pending_buf;  /* output still pending */
+    ulg   pending_buf_size; /* size of pending_buf */
+    Bytef *pending_out;  /* next pending byte to output to the stream */
+    ulg   pending;       /* nb of bytes in the pending buffer */
+    int   wrap;          /* bit 0 true for zlib, bit 1 true for gzip */
+    gz_headerp  gzhead;  /* gzip header information to write */
+    ulg   gzindex;       /* where in extra, name, or comment */
+    Byte  method;        /* can only be DEFLATED */
+    int   last_flush;    /* value of flush param for previous deflate call */
+
+                /* used by deflate.c: */
+
+    uInt  w_size;        /* LZ77 window size (32K by default) */
+    uInt  w_bits;        /* log2(w_size)  (8..16) */
+    uInt  w_mask;        /* w_size - 1 */
+
+    Bytef *window;
+    /* Sliding window. Input bytes are read into the second half of the window,
+     * and move to the first half later to keep a dictionary of at least wSize
+     * bytes. With this organization, matches are limited to a distance of
+     * wSize-MAX_MATCH bytes, but this ensures that IO is always
+     * performed with a length multiple of the block size. Also, it limits
+     * the window size to 64K, which is quite useful on MSDOS.
+     * To do: use the user input buffer as sliding window.
+     */
+
+    ulg window_size;
+    /* Actual size of window: 2*wSize, except when the user input buffer
+     * is directly used as sliding window.
+     */
+
+    Posf *prev;
+    /* Link to older string with same hash index. To limit the size of this
+     * array to 64K, this link is maintained only for the last 32K strings.
+     * An index in this array is thus a window index modulo 32K.
+     */
+
+    Posf *head; /* Heads of the hash chains or NIL. */
+
+    uInt  ins_h;          /* hash index of string to be inserted */
+    uInt  hash_size;      /* number of elements in hash table */
+    uInt  hash_bits;      /* log2(hash_size) */
+    uInt  hash_mask;      /* hash_size-1 */
+
+    uInt  hash_shift;
+    /* Number of bits by which ins_h must be shifted at each input
+     * step. It must be such that after MIN_MATCH steps, the oldest
+     * byte no longer takes part in the hash key, that is:
+     *   hash_shift * MIN_MATCH >= hash_bits
+     */
+
+    long block_start;
+    /* Window position at the beginning of the current output block. Gets
+     * negative when the window is moved backwards.
+     */
+
+    uInt match_length;           /* length of best match */
+    IPos prev_match;             /* previous match */
+    int match_available;         /* set if previous match exists */
+    uInt strstart;               /* start of string to insert */
+    uInt match_start;            /* start of matching string */
+    uInt lookahead;              /* number of valid bytes ahead in window */
+
+    uInt prev_length;
+    /* Length of the best match at previous step. Matches not greater than this
+     * are discarded. This is used in the lazy match evaluation.
+     */
+
+    uInt max_chain_length;
+    /* To speed up deflation, hash chains are never searched beyond this
+     * length.  A higher limit improves compression ratio but degrades the
+     * speed.
+     */
+
+    uInt max_lazy_match;
+    /* Attempt to find a better match only when the current match is strictly
+     * smaller than this value. This mechanism is used only for compression
+     * levels >= 4.
+     */
+#   define max_insert_length  max_lazy_match
+    /* Insert new strings in the hash table only if the match length is not
+     * greater than this length. This saves time but degrades compression.
+     * max_insert_length is used only for compression levels <= 3.
+     */
+
+    int level;    /* compression level (1..9) */
+    int strategy; /* favor or force Huffman coding*/
+
+    uInt good_match;
+    /* Use a faster search when the previous match is longer than this */
+
+    int nice_match; /* Stop searching when current match exceeds this */
+
+                /* used by trees.c: */
+    /* Didn't use ct_data typedef below to suppress compiler warning */
+    struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+    struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+    struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+    struct tree_desc_s l_desc;               /* desc. for literal tree */
+    struct tree_desc_s d_desc;               /* desc. for distance tree */
+    struct tree_desc_s bl_desc;              /* desc. for bit length tree */
+
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+    int heap_len;               /* number of elements in the heap */
+    int heap_max;               /* element of largest frequency */
+    /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+     * The same heap array is used to build all trees.
+     */
+
+    uch depth[2*L_CODES+1];
+    /* Depth of each subtree used as tie breaker for trees of equal frequency
+     */
+
+    uchf *sym_buf;        /* buffer for distances and literals/lengths */
+
+    uInt  lit_bufsize;
+    /* Size of match buffer for literals/lengths.  There are 4 reasons for
+     * limiting lit_bufsize to 64K:
+     *   - frequencies can be kept in 16 bit counters
+     *   - if compression is not successful for the first block, all input
+     *     data is still in the window so we can still emit a stored block even
+     *     when input comes from standard input.  (This can also be done for
+     *     all blocks if lit_bufsize is not greater than 32K.)
+     *   - if compression is not successful for a file smaller than 64K, we can
+     *     even emit a stored file instead of a stored block (saving 5 bytes).
+     *     This is applicable only for zip (not gzip or zlib).
+     *   - creating new Huffman trees less frequently may not provide fast
+     *     adaptation to changes in the input data statistics. (Take for
+     *     example a binary file with poorly compressible code followed by
+     *     a highly compressible string table.) Smaller buffer sizes give
+     *     fast adaptation but have of course the overhead of transmitting
+     *     trees more frequently.
+     *   - I can't count above 4
+     */
+
+    uInt sym_next;      /* running index in sym_buf */
+    uInt sym_end;       /* symbol table full when sym_next reaches this */
+
+    ulg opt_len;        /* bit length of current block with optimal trees */
+    ulg static_len;     /* bit length of current block with static trees */
+    uInt matches;       /* number of string matches in current block */
+    uInt insert;        /* bytes at end of window left to insert */
+
+#ifdef ZLIB_DEBUG
+    ulg compressed_len; /* total bit length of compressed file mod 2^32 */
+    ulg bits_sent;      /* bit length of compressed data sent mod 2^32 */
+#endif
+
+    ush bi_buf;
+    /* Output buffer. bits are inserted starting at the bottom (least
+     * significant bits).
+     */
+    int bi_valid;
+    /* Number of valid bits in bi_buf.  All bits above the last valid bit
+     * are always zero.
+     */
+
+    ulg high_water;
+    /* High water mark offset in window for initialized bytes -- bytes above
+     * this are set to zero in order to avoid memory check warnings when
+     * longest match routines access bytes past the input.  This is then
+     * updated to the new high water mark.
+     */
+
+} FAR deflate_state;
+
+/* Output a byte on the stream.
+ * IN assertion: there is enough room in pending_buf.
+ */
+#define put_byte(s, c) {s->pending_buf[s->pending++] = (Bytef)(c);}
+
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+#define MAX_DIST(s)  ((s)->w_size-MIN_LOOKAHEAD)
+/* In order to simplify the code, particularly on 16 bit machines, match
+ * distances are limited to MAX_DIST instead of WSIZE.
+ */
+
+#define WIN_INIT MAX_MATCH
+/* Number of bytes after end of data in window to initialize in order to avoid
+   memory checker errors from longest match routines */
+
+        /* in trees.c */
+void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
+int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
+void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
+                        ulg stored_len, int last));
+void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
+void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
+void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
+                        ulg stored_len, int last));
+
+#define d_code(dist) \
+   ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
+/* Mapping from a distance to a distance code. dist is the distance - 1 and
+ * must not have side effects. _dist_code[256] and _dist_code[257] are never
+ * used.
+ */
+
+#ifndef ZLIB_DEBUG
+/* Inline versions of _tr_tally for speed: */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+  extern uch ZLIB_INTERNAL _length_code[];
+  extern uch ZLIB_INTERNAL _dist_code[];
+#else
+  extern const uch ZLIB_INTERNAL _length_code[];
+  extern const uch ZLIB_INTERNAL _dist_code[];
+#endif
+
+# define _tr_tally_lit(s, c, flush) \
+  { uch cc = (c); \
+    s->sym_buf[s->sym_next++] = 0; \
+    s->sym_buf[s->sym_next++] = 0; \
+    s->sym_buf[s->sym_next++] = cc; \
+    s->dyn_ltree[cc].Freq++; \
+    flush = (s->sym_next == s->sym_end); \
+   }
+# define _tr_tally_dist(s, distance, length, flush) \
+  { uch len = (uch)(length); \
+    ush dist = (ush)(distance); \
+    s->sym_buf[s->sym_next++] = (uch)dist; \
+    s->sym_buf[s->sym_next++] = (uch)(dist >> 8); \
+    s->sym_buf[s->sym_next++] = len; \
+    dist--; \
+    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
+    s->dyn_dtree[d_code(dist)].Freq++; \
+    flush = (s->sym_next == s->sym_end); \
+  }
+#else
+# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
+# define _tr_tally_dist(s, distance, length, flush) \
+              flush = _tr_tally(s, distance, length)
+#endif
+
+#endif /* DEFLATE_H */
diff --git a/lib/zlib/gzclose.c b/lib/zlib/gzclose.c
new file mode 100644
index 0000000..caeb99a
--- /dev/null
+++ b/lib/zlib/gzclose.c
@@ -0,0 +1,25 @@
+/* gzclose.c -- zlib gzclose() function
+ * Copyright (C) 2004, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* gzclose() is in a separate file so that it is linked in only if it is used.
+   That way the other gzclose functions can be used instead to avoid linking in
+   unneeded compression or decompression routines. */
+int ZEXPORT gzclose(file)
+    gzFile file;
+{
+#ifndef NO_GZCOMPRESS
+    gz_statep state;
+
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
+#else
+    return gzclose_r(file);
+#endif
+}
diff --git a/lib/zlib/gzguts.h b/lib/zlib/gzguts.h
new file mode 100644
index 0000000..f8b914c
--- /dev/null
+++ b/lib/zlib/gzguts.h
@@ -0,0 +1,219 @@
+/* gzguts.h -- zlib internal header definitions for gz* operations
+ * Copyright (C) 2004-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#ifdef _LARGEFILE64_SOURCE
+#  ifndef _LARGEFILE_SOURCE
+#    define _LARGEFILE_SOURCE 1
+#  endif
+#  ifdef _FILE_OFFSET_BITS
+#    undef _FILE_OFFSET_BITS
+#  endif
+#endif
+
+#ifdef HAVE_HIDDEN
+#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
+#else
+#  define ZLIB_INTERNAL
+#endif
+
+#include "zlib.h"
+#include <stdio.h>
+#ifdef STDC
+#  include <string.h>
+#  include <stdlib.h>
+#  include <limits.h>
+#endif
+
+#ifndef _POSIX_SOURCE
+#  define _POSIX_SOURCE
+#endif
+#include <fcntl.h>
+
+#ifdef _WIN32
+#  include <stddef.h>
+#endif
+
+#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
+#  include <io.h>
+#endif
+
+#if defined(_WIN32)
+#  define WIDECHAR
+#endif
+
+#ifdef WINAPI_FAMILY
+#  define open _open
+#  define read _read
+#  define write _write
+#  define close _close
+#endif
+
+#ifdef NO_DEFLATE       /* for compatibility with old definition */
+#  define NO_GZCOMPRESS
+#endif
+
+#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#if defined(__CYGWIN__)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#ifndef HAVE_VSNPRINTF
+#  ifdef MSDOS
+/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
+   but for now we just assume it doesn't. */
+#    define NO_vsnprintf
+#  endif
+#  ifdef __TURBOC__
+#    define NO_vsnprintf
+#  endif
+#  ifdef WIN32
+/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
+#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
+#      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
+#         define vsnprintf _vsnprintf
+#      endif
+#    endif
+#  endif
+#  ifdef __SASC
+#    define NO_vsnprintf
+#  endif
+#  ifdef VMS
+#    define NO_vsnprintf
+#  endif
+#  ifdef __OS400__
+#    define NO_vsnprintf
+#  endif
+#  ifdef __MVS__
+#    define NO_vsnprintf
+#  endif
+#endif
+
+/* unlike snprintf (which is required in C99), _snprintf does not guarantee
+   null termination of the result -- however this is only used in gzlib.c where
+   the result is assured to fit in the space provided */
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#  define snprintf _snprintf
+#endif
+
+#ifndef local
+#  define local static
+#endif
+/* since "static" is used to mean two completely different things in C, we
+   define "local" for the non-static meaning of "static", for readability
+   (compile with -Dlocal if your debugger can't find static symbols) */
+
+/* gz* functions always use library allocation functions */
+#ifndef STDC
+  extern voidp  malloc OF((uInt size));
+  extern void   free   OF((voidpf ptr));
+#endif
+
+/* get errno and strerror definition */
+#if defined UNDER_CE
+#  include <windows.h>
+#  define zstrerror() gz_strwinerror((DWORD)GetLastError())
+#else
+#  ifndef NO_STRERROR
+#    include <errno.h>
+#    define zstrerror() strerror(errno)
+#  else
+#    define zstrerror() "stdio error (consult errno)"
+#  endif
+#endif
+
+/* provide prototypes for these when building zlib without LFS */
+#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
+    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
+    ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
+    ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
+#endif
+
+/* default memLevel */
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+
+/* default i/o buffer size -- double this for output when reading (this and
+   twice this must be able to fit in an unsigned type) */
+#define GZBUFSIZE 8192
+
+/* gzip modes, also provide a little integrity check on the passed structure */
+#define GZ_NONE 0
+#define GZ_READ 7247
+#define GZ_WRITE 31153
+#define GZ_APPEND 1     /* mode set to GZ_WRITE after the file is opened */
+
+/* values for gz_state how */
+#define LOOK 0      /* look for a gzip header */
+#define COPY 1      /* copy input directly */
+#define GZIP 2      /* decompress a gzip stream */
+
+/* internal gzip file state data structure */
+typedef struct {
+        /* exposed contents for gzgetc() macro */
+    struct gzFile_s x;      /* "x" for exposed */
+                            /* x.have: number of bytes available at x.next */
+                            /* x.next: next output data to deliver or write */
+                            /* x.pos: current position in uncompressed data */
+        /* used for both reading and writing */
+    int mode;               /* see gzip modes above */
+    int fd;                 /* file descriptor */
+    char *path;             /* path or fd for error messages */
+    unsigned size;          /* buffer size, zero if not allocated yet */
+    unsigned want;          /* requested buffer size, default is GZBUFSIZE */
+    unsigned char *in;      /* input buffer (double-sized when writing) */
+    unsigned char *out;     /* output buffer (double-sized when reading) */
+    int direct;             /* 0 if processing gzip, 1 if transparent */
+        /* just for reading */
+    int how;                /* 0: get header, 1: copy, 2: decompress */
+    z_off64_t start;        /* where the gzip data started, for rewinding */
+    int eof;                /* true if end of input file reached */
+    int past;               /* true if read requested past end */
+        /* just for writing */
+    int level;              /* compression level */
+    int strategy;           /* compression strategy */
+    int reset;              /* true if a reset is pending after a Z_FINISH */
+        /* seek request */
+    z_off64_t skip;         /* amount to skip (already rewound if backwards) */
+    int seek;               /* true if seek request pending */
+        /* error information */
+    int err;                /* error code */
+    char *msg;              /* error message */
+        /* zlib inflate or deflate stream */
+    z_stream strm;          /* stream structure in-place (not a pointer) */
+} gz_state;
+typedef gz_state FAR *gz_statep;
+
+/* shared functions */
+void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
+#if defined UNDER_CE
+char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
+#endif
+
+/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
+   value -- needed when comparing unsigned to z_off64_t, which is signed
+   (possible z_off64_t types off_t, off64_t, and long are all signed) */
+#ifdef INT_MAX
+#  define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
+#else
+unsigned ZLIB_INTERNAL gz_intmax OF((void));
+#  define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
+#endif
diff --git a/lib/zlib/gzlib.c b/lib/zlib/gzlib.c
new file mode 100644
index 0000000..55da46a
--- /dev/null
+++ b/lib/zlib/gzlib.c
@@ -0,0 +1,639 @@
+/* gzlib.c -- zlib functions common to reading and writing gzip files
+ * Copyright (C) 2004-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+#if defined(_WIN32) && !defined(__BORLANDC__)
+#  define LSEEK _lseeki64
+#else
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#  define LSEEK lseek64
+#else
+#  define LSEEK lseek
+#endif
+#endif
+
+/* Local functions */
+local void gz_reset OF((gz_statep));
+local gzFile gz_open OF((const void *, int, const char *));
+
+#if defined UNDER_CE
+
+/* Map the Windows error number in ERROR to a locale-dependent error message
+   string and return a pointer to it.  Typically, the values for ERROR come
+   from GetLastError.
+
+   The string pointed to shall not be modified by the application, but may be
+   overwritten by a subsequent call to gz_strwinerror
+
+   The gz_strwinerror function does not change the current setting of
+   GetLastError. */
+char ZLIB_INTERNAL *gz_strwinerror(error)
+     DWORD error;
+{
+    static char buf[1024];
+
+    wchar_t *msgbuf;
+    DWORD lasterr = GetLastError();
+    DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
+        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
+        NULL,
+        error,
+        0, /* Default language */
+        (LPVOID)&msgbuf,
+        0,
+        NULL);
+    if (chars != 0) {
+        /* If there is an \r\n appended, zap it.  */
+        if (chars >= 2
+            && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
+            chars -= 2;
+            msgbuf[chars] = 0;
+        }
+
+        if (chars > sizeof (buf) - 1) {
+            chars = sizeof (buf) - 1;
+            msgbuf[chars] = 0;
+        }
+
+        wcstombs(buf, msgbuf, chars + 1);
+        LocalFree(msgbuf);
+    }
+    else {
+        sprintf(buf, "unknown win32 error (%ld)", error);
+    }
+
+    SetLastError(lasterr);
+    return buf;
+}
+
+#endif /* UNDER_CE */
+
+/* Reset gzip file state */
+local void gz_reset(state)
+    gz_statep state;
+{
+    state->x.have = 0;              /* no output data available */
+    if (state->mode == GZ_READ) {   /* for reading ... */
+        state->eof = 0;             /* not at end of file */
+        state->past = 0;            /* have not read past end yet */
+        state->how = LOOK;          /* look for gzip header */
+    }
+    else                            /* for writing ... */
+        state->reset = 0;           /* no deflateReset pending */
+    state->seek = 0;                /* no seek request pending */
+    gz_error(state, Z_OK, NULL);    /* clear error */
+    state->x.pos = 0;               /* no uncompressed data yet */
+    state->strm.avail_in = 0;       /* no input data yet */
+}
+
+/* Open a gzip file either by name or file descriptor. */
+local gzFile gz_open(path, fd, mode)
+    const void *path;
+    int fd;
+    const char *mode;
+{
+    gz_statep state;
+    z_size_t len;
+    int oflag;
+#ifdef O_CLOEXEC
+    int cloexec = 0;
+#endif
+#ifdef O_EXCL
+    int exclusive = 0;
+#endif
+
+    /* check input */
+    if (path == NULL)
+        return NULL;
+
+    /* allocate gzFile structure to return */
+    state = (gz_statep)malloc(sizeof(gz_state));
+    if (state == NULL)
+        return NULL;
+    state->size = 0;            /* no buffers allocated yet */
+    state->want = GZBUFSIZE;    /* requested buffer size */
+    state->msg = NULL;          /* no error message yet */
+
+    /* interpret mode */
+    state->mode = GZ_NONE;
+    state->level = Z_DEFAULT_COMPRESSION;
+    state->strategy = Z_DEFAULT_STRATEGY;
+    state->direct = 0;
+    while (*mode) {
+        if (*mode >= '0' && *mode <= '9')
+            state->level = *mode - '0';
+        else
+            switch (*mode) {
+            case 'r':
+                state->mode = GZ_READ;
+                break;
+#ifndef NO_GZCOMPRESS
+            case 'w':
+                state->mode = GZ_WRITE;
+                break;
+            case 'a':
+                state->mode = GZ_APPEND;
+                break;
+#endif
+            case '+':       /* can't read and write at the same time */
+                free(state);
+                return NULL;
+            case 'b':       /* ignore -- will request binary anyway */
+                break;
+#ifdef O_CLOEXEC
+            case 'e':
+                cloexec = 1;
+                break;
+#endif
+#ifdef O_EXCL
+            case 'x':
+                exclusive = 1;
+                break;
+#endif
+            case 'f':
+                state->strategy = Z_FILTERED;
+                break;
+            case 'h':
+                state->strategy = Z_HUFFMAN_ONLY;
+                break;
+            case 'R':
+                state->strategy = Z_RLE;
+                break;
+            case 'F':
+                state->strategy = Z_FIXED;
+                break;
+            case 'T':
+                state->direct = 1;
+                break;
+            default:        /* could consider as an error, but just ignore */
+                ;
+            }
+        mode++;
+    }
+
+    /* must provide an "r", "w", or "a" */
+    if (state->mode == GZ_NONE) {
+        free(state);
+        return NULL;
+    }
+
+    /* can't force transparent read */
+    if (state->mode == GZ_READ) {
+        if (state->direct) {
+            free(state);
+            return NULL;
+        }
+        state->direct = 1;      /* for empty file */
+    }
+
+    /* save the path name for error messages */
+#ifdef WIDECHAR
+    if (fd == -2) {
+        len = wcstombs(NULL, path, 0);
+        if (len == (z_size_t)-1)
+            len = 0;
+    }
+    else
+#endif
+        len = strlen((const char *)path);
+    state->path = (char *)malloc(len + 1);
+    if (state->path == NULL) {
+        free(state);
+        return NULL;
+    }
+#ifdef WIDECHAR
+    if (fd == -2)
+        if (len)
+            wcstombs(state->path, path, len + 1);
+        else
+            *(state->path) = 0;
+    else
+#endif
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+        (void)snprintf(state->path, len + 1, "%s", (const char *)path);
+#else
+        strcpy(state->path, path);
+#endif
+
+    /* compute the flags for open() */
+    oflag =
+#ifdef O_LARGEFILE
+        O_LARGEFILE |
+#endif
+#ifdef O_BINARY
+        O_BINARY |
+#endif
+#ifdef O_CLOEXEC
+        (cloexec ? O_CLOEXEC : 0) |
+#endif
+        (state->mode == GZ_READ ?
+         O_RDONLY :
+         (O_WRONLY | O_CREAT |
+#ifdef O_EXCL
+          (exclusive ? O_EXCL : 0) |
+#endif
+          (state->mode == GZ_WRITE ?
+           O_TRUNC :
+           O_APPEND)));
+
+    /* open the file with the appropriate flags (or just use fd) */
+    state->fd = fd > -1 ? fd : (
+#ifdef WIDECHAR
+        fd == -2 ? _wopen(path, oflag, 0666) :
+#endif
+        open((const char *)path, oflag, 0666));
+    if (state->fd == -1) {
+        free(state->path);
+        free(state);
+        return NULL;
+    }
+    if (state->mode == GZ_APPEND) {
+        LSEEK(state->fd, 0, SEEK_END);  /* so gzoffset() is correct */
+        state->mode = GZ_WRITE;         /* simplify later checks */
+    }
+
+    /* save the current position for rewinding (only if reading) */
+    if (state->mode == GZ_READ) {
+        state->start = LSEEK(state->fd, 0, SEEK_CUR);
+        if (state->start == -1) state->start = 0;
+    }
+
+    /* initialize stream */
+    gz_reset(state);
+
+    /* return stream */
+    return (gzFile)state;
+}
+
+/* -- see zlib.h -- */
+gzFile ZEXPORT gzopen(path, mode)
+    const char *path;
+    const char *mode;
+{
+    return gz_open(path, -1, mode);
+}
+
+/* -- see zlib.h -- */
+gzFile ZEXPORT gzopen64(path, mode)
+    const char *path;
+    const char *mode;
+{
+    return gz_open(path, -1, mode);
+}
+
+/* -- see zlib.h -- */
+gzFile ZEXPORT gzdopen(fd, mode)
+    int fd;
+    const char *mode;
+{
+    char *path;         /* identifier for error messages */
+    gzFile gz;
+
+    if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
+        return NULL;
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    (void)snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd);
+#else
+    sprintf(path, "<fd:%d>", fd);   /* for debugging */
+#endif
+    gz = gz_open(path, fd, mode);
+    free(path);
+    return gz;
+}
+
+/* -- see zlib.h -- */
+#ifdef WIDECHAR
+gzFile ZEXPORT gzopen_w(path, mode)
+    const wchar_t *path;
+    const char *mode;
+{
+    return gz_open(path, -2, mode);
+}
+#endif
+
+/* -- see zlib.h -- */
+int ZEXPORT gzbuffer(file, size)
+    gzFile file;
+    unsigned size;
+{
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* make sure we haven't already allocated memory */
+    if (state->size != 0)
+        return -1;
+
+    /* check and set requested size */
+    if ((size << 1) < size)
+        return -1;              /* need to be able to double it */
+    if (size < 2)
+        size = 2;               /* need two bytes to check magic header */
+    state->want = size;
+    return 0;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzrewind(file)
+    gzFile file;
+{
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* back up and start over */
+    if (LSEEK(state->fd, state->start, SEEK_SET) == -1)
+        return -1;
+    gz_reset(state);
+    return 0;
+}
+
+/* -- see zlib.h -- */
+z_off64_t ZEXPORT gzseek64(file, offset, whence)
+    gzFile file;
+    z_off64_t offset;
+    int whence;
+{
+    unsigned n;
+    z_off64_t ret;
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* check that there's no error */
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
+        return -1;
+
+    /* can only seek from start or relative to current position */
+    if (whence != SEEK_SET && whence != SEEK_CUR)
+        return -1;
+
+    /* normalize offset to a SEEK_CUR specification */
+    if (whence == SEEK_SET)
+        offset -= state->x.pos;
+    else if (state->seek)
+        offset += state->skip;
+    state->seek = 0;
+
+    /* if within raw area while reading, just go there */
+    if (state->mode == GZ_READ && state->how == COPY &&
+            state->x.pos + offset >= 0) {
+        ret = LSEEK(state->fd, offset - (z_off64_t)state->x.have, SEEK_CUR);
+        if (ret == -1)
+            return -1;
+        state->x.have = 0;
+        state->eof = 0;
+        state->past = 0;
+        state->seek = 0;
+        gz_error(state, Z_OK, NULL);
+        state->strm.avail_in = 0;
+        state->x.pos += offset;
+        return state->x.pos;
+    }
+
+    /* calculate skip amount, rewinding if needed for back seek when reading */
+    if (offset < 0) {
+        if (state->mode != GZ_READ)         /* writing -- can't go backwards */
+            return -1;
+        offset += state->x.pos;
+        if (offset < 0)                     /* before start of file! */
+            return -1;
+        if (gzrewind(file) == -1)           /* rewind, then skip to offset */
+            return -1;
+    }
+
+    /* if reading, skip what's in output buffer (one less gzgetc() check) */
+    if (state->mode == GZ_READ) {
+        n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?
+            (unsigned)offset : state->x.have;
+        state->x.have -= n;
+        state->x.next += n;
+        state->x.pos += n;
+        offset -= n;
+    }
+
+    /* request skip (if not zero) */
+    if (offset) {
+        state->seek = 1;
+        state->skip = offset;
+    }
+    return state->x.pos + offset;
+}
+
+/* -- see zlib.h -- */
+z_off_t ZEXPORT gzseek(file, offset, whence)
+    gzFile file;
+    z_off_t offset;
+    int whence;
+{
+    z_off64_t ret;
+
+    ret = gzseek64(file, (z_off64_t)offset, whence);
+    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
+}
+
+/* -- see zlib.h -- */
+z_off64_t ZEXPORT gztell64(file)
+    gzFile file;
+{
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* return position */
+    return state->x.pos + (state->seek ? state->skip : 0);
+}
+
+/* -- see zlib.h -- */
+z_off_t ZEXPORT gztell(file)
+    gzFile file;
+{
+    z_off64_t ret;
+
+    ret = gztell64(file);
+    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
+}
+
+/* -- see zlib.h -- */
+z_off64_t ZEXPORT gzoffset64(file)
+    gzFile file;
+{
+    z_off64_t offset;
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* compute and return effective offset in file */
+    offset = LSEEK(state->fd, 0, SEEK_CUR);
+    if (offset == -1)
+        return -1;
+    if (state->mode == GZ_READ)             /* reading */
+        offset -= state->strm.avail_in;     /* don't count buffered input */
+    return offset;
+}
+
+/* -- see zlib.h -- */
+z_off_t ZEXPORT gzoffset(file)
+    gzFile file;
+{
+    z_off64_t ret;
+
+    ret = gzoffset64(file);
+    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzeof(file)
+    gzFile file;
+{
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return 0;
+
+    /* return end-of-file state */
+    return state->mode == GZ_READ ? state->past : 0;
+}
+
+/* -- see zlib.h -- */
+const char * ZEXPORT gzerror(file, errnum)
+    gzFile file;
+    int *errnum;
+{
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return NULL;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return NULL;
+
+    /* return error information */
+    if (errnum != NULL)
+        *errnum = state->err;
+    return state->err == Z_MEM_ERROR ? "out of memory" :
+                                       (state->msg == NULL ? "" : state->msg);
+}
+
+/* -- see zlib.h -- */
+void ZEXPORT gzclearerr(file)
+    gzFile file;
+{
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return;
+
+    /* clear error and end-of-file */
+    if (state->mode == GZ_READ) {
+        state->eof = 0;
+        state->past = 0;
+    }
+    gz_error(state, Z_OK, NULL);
+}
+
+/* Create an error message in allocated memory and set state->err and
+   state->msg accordingly.  Free any previous error message already there.  Do
+   not try to free or allocate space if the error is Z_MEM_ERROR (out of
+   memory).  Simply save the error message as a static string.  If there is an
+   allocation failure constructing the error message, then convert the error to
+   out of memory. */
+void ZLIB_INTERNAL gz_error(state, err, msg)
+    gz_statep state;
+    int err;
+    const char *msg;
+{
+    /* free previously allocated message and clear */
+    if (state->msg != NULL) {
+        if (state->err != Z_MEM_ERROR)
+            free(state->msg);
+        state->msg = NULL;
+    }
+
+    /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */
+    if (err != Z_OK && err != Z_BUF_ERROR)
+        state->x.have = 0;
+
+    /* set error code, and if no message, then done */
+    state->err = err;
+    if (msg == NULL)
+        return;
+
+    /* for an out of memory error, return literal string when requested */
+    if (err == Z_MEM_ERROR)
+        return;
+
+    /* construct error message with path */
+    if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
+            NULL) {
+        state->err = Z_MEM_ERROR;
+        return;
+    }
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    (void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
+                   "%s%s%s", state->path, ": ", msg);
+#else
+    strcpy(state->msg, state->path);
+    strcat(state->msg, ": ");
+    strcat(state->msg, msg);
+#endif
+}
+
+#ifndef INT_MAX
+/* portably return maximum value for an int (when limits.h presumed not
+   available) -- we need to do this to cover cases where 2's complement not
+   used, since C standard permits 1's complement and sign-bit representations,
+   otherwise we could just use ((unsigned)-1) >> 1 */
+unsigned ZLIB_INTERNAL gz_intmax()
+{
+    unsigned p, q;
+
+    p = 1;
+    do {
+        q = p;
+        p <<= 1;
+        p++;
+    } while (p > q);
+    return q >> 1;
+}
+#endif
diff --git a/lib/zlib/gzread.c b/lib/zlib/gzread.c
new file mode 100644
index 0000000..dd77381
--- /dev/null
+++ b/lib/zlib/gzread.c
@@ -0,0 +1,650 @@
+/* gzread.c -- zlib functions for reading gzip files
+ * Copyright (C) 2004-2017 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* Local functions */
+local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
+local int gz_avail OF((gz_statep));
+local int gz_look OF((gz_statep));
+local int gz_decomp OF((gz_statep));
+local int gz_fetch OF((gz_statep));
+local int gz_skip OF((gz_statep, z_off64_t));
+local z_size_t gz_read OF((gz_statep, voidp, z_size_t));
+
+/* Use read() to load a buffer -- return -1 on error, otherwise 0.  Read from
+   state->fd, and update state->eof, state->err, and state->msg as appropriate.
+   This function needs to loop on read(), since read() is not guaranteed to
+   read the number of bytes requested, depending on the type of descriptor. */
+local int gz_load(state, buf, len, have)
+    gz_statep state;
+    unsigned char *buf;
+    unsigned len;
+    unsigned *have;
+{
+    int ret;
+    unsigned get, max = ((unsigned)-1 >> 2) + 1;
+
+    *have = 0;
+    do {
+        get = len - *have;
+        if (get > max)
+            get = max;
+        ret = read(state->fd, buf + *have, get);
+        if (ret <= 0)
+            break;
+        *have += (unsigned)ret;
+    } while (*have < len);
+    if (ret < 0) {
+        gz_error(state, Z_ERRNO, zstrerror());
+        return -1;
+    }
+    if (ret == 0)
+        state->eof = 1;
+    return 0;
+}
+
+/* Load up input buffer and set eof flag if last data loaded -- return -1 on
+   error, 0 otherwise.  Note that the eof flag is set when the end of the input
+   file is reached, even though there may be unused data in the buffer.  Once
+   that data has been used, no more attempts will be made to read the file.
+   If strm->avail_in != 0, then the current data is moved to the beginning of
+   the input buffer, and then the remainder of the buffer is loaded with the
+   available data from the input file. */
+local int gz_avail(state)
+    gz_statep state;
+{
+    unsigned got;
+    z_streamp strm = &(state->strm);
+
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
+        return -1;
+    if (state->eof == 0) {
+        if (strm->avail_in) {       /* copy what's there to the start */
+            unsigned char *p = state->in;
+            unsigned const char *q = strm->next_in;
+            unsigned n = strm->avail_in;
+            do {
+                *p++ = *q++;
+            } while (--n);
+        }
+        if (gz_load(state, state->in + strm->avail_in,
+                    state->size - strm->avail_in, &got) == -1)
+            return -1;
+        strm->avail_in += got;
+        strm->next_in = state->in;
+    }
+    return 0;
+}
+
+/* Look for gzip header, set up for inflate or copy.  state->x.have must be 0.
+   If this is the first time in, allocate required memory.  state->how will be
+   left unchanged if there is no more input data available, will be set to COPY
+   if there is no gzip header and direct copying will be performed, or it will
+   be set to GZIP for decompression.  If direct copying, then leftover input
+   data from the input buffer will be copied to the output buffer.  In that
+   case, all further file reads will be directly to either the output buffer or
+   a user buffer.  If decompressing, the inflate state will be initialized.
+   gz_look() will return 0 on success or -1 on failure. */
+local int gz_look(state)
+    gz_statep state;
+{
+    z_streamp strm = &(state->strm);
+
+    /* allocate read buffers and inflate memory */
+    if (state->size == 0) {
+        /* allocate buffers */
+        state->in = (unsigned char *)malloc(state->want);
+        state->out = (unsigned char *)malloc(state->want << 1);
+        if (state->in == NULL || state->out == NULL) {
+            free(state->out);
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+        state->size = state->want;
+
+        /* allocate inflate memory */
+        state->strm.zalloc = Z_NULL;
+        state->strm.zfree = Z_NULL;
+        state->strm.opaque = Z_NULL;
+        state->strm.avail_in = 0;
+        state->strm.next_in = Z_NULL;
+        if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) {    /* gunzip */
+            free(state->out);
+            free(state->in);
+            state->size = 0;
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+    }
+
+    /* get at least the magic bytes in the input buffer */
+    if (strm->avail_in < 2) {
+        if (gz_avail(state) == -1)
+            return -1;
+        if (strm->avail_in == 0)
+            return 0;
+    }
+
+    /* look for gzip magic bytes -- if there, do gzip decoding (note: there is
+       a logical dilemma here when considering the case of a partially written
+       gzip file, to wit, if a single 31 byte is written, then we cannot tell
+       whether this is a single-byte file, or just a partially written gzip
+       file -- for here we assume that if a gzip file is being written, then
+       the header will be written in a single operation, so that reading a
+       single byte is sufficient indication that it is not a gzip file) */
+    if (strm->avail_in > 1 &&
+            strm->next_in[0] == 31 && strm->next_in[1] == 139) {
+        inflateReset(strm);
+        state->how = GZIP;
+        state->direct = 0;
+        return 0;
+    }
+
+    /* no gzip header -- if we were decoding gzip before, then this is trailing
+       garbage.  Ignore the trailing garbage and finish. */
+    if (state->direct == 0) {
+        strm->avail_in = 0;
+        state->eof = 1;
+        state->x.have = 0;
+        return 0;
+    }
+
+    /* doing raw i/o, copy any leftover input to output -- this assumes that
+       the output buffer is larger than the input buffer, which also assures
+       space for gzungetc() */
+    state->x.next = state->out;
+    memcpy(state->x.next, strm->next_in, strm->avail_in);
+    state->x.have = strm->avail_in;
+    strm->avail_in = 0;
+    state->how = COPY;
+    state->direct = 1;
+    return 0;
+}
+
+/* Decompress from input to the provided next_out and avail_out in the state.
+   On return, state->x.have and state->x.next point to the just decompressed
+   data.  If the gzip stream completes, state->how is reset to LOOK to look for
+   the next gzip stream or raw data, once state->x.have is depleted.  Returns 0
+   on success, -1 on failure. */
+local int gz_decomp(state)
+    gz_statep state;
+{
+    int ret = Z_OK;
+    unsigned had;
+    z_streamp strm = &(state->strm);
+
+    /* fill output buffer up to end of deflate stream */
+    had = strm->avail_out;
+    do {
+        /* get more input for inflate() */
+        if (strm->avail_in == 0 && gz_avail(state) == -1)
+            return -1;
+        if (strm->avail_in == 0) {
+            gz_error(state, Z_BUF_ERROR, "unexpected end of file");
+            break;
+        }
+
+        /* decompress and handle errors */
+        ret = inflate(strm, Z_NO_FLUSH);
+        if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
+            gz_error(state, Z_STREAM_ERROR,
+                     "internal error: inflate stream corrupt");
+            return -1;
+        }
+        if (ret == Z_MEM_ERROR) {
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+        if (ret == Z_DATA_ERROR) {              /* deflate stream invalid */
+            gz_error(state, Z_DATA_ERROR,
+                     strm->msg == NULL ? "compressed data error" : strm->msg);
+            return -1;
+        }
+    } while (strm->avail_out && ret != Z_STREAM_END);
+
+    /* update available output */
+    state->x.have = had - strm->avail_out;
+    state->x.next = strm->next_out - state->x.have;
+
+    /* if the gzip stream completed successfully, look for another */
+    if (ret == Z_STREAM_END)
+        state->how = LOOK;
+
+    /* good decompression */
+    return 0;
+}
+
+/* Fetch data and put it in the output buffer.  Assumes state->x.have is 0.
+   Data is either copied from the input file or decompressed from the input
+   file depending on state->how.  If state->how is LOOK, then a gzip header is
+   looked for to determine whether to copy or decompress.  Returns -1 on error,
+   otherwise 0.  gz_fetch() will leave state->how as COPY or GZIP unless the
+   end of the input file has been reached and all data has been processed.  */
+local int gz_fetch(state)
+    gz_statep state;
+{
+    z_streamp strm = &(state->strm);
+
+    do {
+        switch(state->how) {
+        case LOOK:      /* -> LOOK, COPY (only if never GZIP), or GZIP */
+            if (gz_look(state) == -1)
+                return -1;
+            if (state->how == LOOK)
+                return 0;
+            break;
+        case COPY:      /* -> COPY */
+            if (gz_load(state, state->out, state->size << 1, &(state->x.have))
+                    == -1)
+                return -1;
+            state->x.next = state->out;
+            return 0;
+        case GZIP:      /* -> GZIP or LOOK (if end of gzip stream) */
+            strm->avail_out = state->size << 1;
+            strm->next_out = state->out;
+            if (gz_decomp(state) == -1)
+                return -1;
+        }
+    } while (state->x.have == 0 && (!state->eof || strm->avail_in));
+    return 0;
+}
+
+/* Skip len uncompressed bytes of output.  Return -1 on error, 0 on success. */
+local int gz_skip(state, len)
+    gz_statep state;
+    z_off64_t len;
+{
+    unsigned n;
+
+    /* skip over len bytes or reach end-of-file, whichever comes first */
+    while (len)
+        /* skip over whatever is in output buffer */
+        if (state->x.have) {
+            n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ?
+                (unsigned)len : state->x.have;
+            state->x.have -= n;
+            state->x.next += n;
+            state->x.pos += n;
+            len -= n;
+        }
+
+        /* output buffer empty -- return if we're at the end of the input */
+        else if (state->eof && state->strm.avail_in == 0)
+            break;
+
+        /* need more data to skip -- load up output buffer */
+        else {
+            /* get more output, looking for header if required */
+            if (gz_fetch(state) == -1)
+                return -1;
+        }
+    return 0;
+}
+
+/* Read len bytes into buf from file, or less than len up to the end of the
+   input.  Return the number of bytes read.  If zero is returned, either the
+   end of file was reached, or there was an error.  state->err must be
+   consulted in that case to determine which. */
+local z_size_t gz_read(state, buf, len)
+    gz_statep state;
+    voidp buf;
+    z_size_t len;
+{
+    z_size_t got;
+    unsigned n;
+
+    /* if len is zero, avoid unnecessary operations */
+    if (len == 0)
+        return 0;
+
+    /* process a skip request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_skip(state, state->skip) == -1)
+            return 0;
+    }
+
+    /* get len bytes to buf, or less than len if at the end */
+    got = 0;
+    do {
+        /* set n to the maximum amount of len that fits in an unsigned int */
+        n = (unsigned)-1;
+        if (n > len)
+            n = (unsigned)len;
+
+        /* first just try copying data from the output buffer */
+        if (state->x.have) {
+            if (state->x.have < n)
+                n = state->x.have;
+            memcpy(buf, state->x.next, n);
+            state->x.next += n;
+            state->x.have -= n;
+        }
+
+        /* output buffer empty -- return if we're at the end of the input */
+        else if (state->eof && state->strm.avail_in == 0) {
+            state->past = 1;        /* tried to read past end */
+            break;
+        }
+
+        /* need output data -- for small len or new stream load up our output
+           buffer */
+        else if (state->how == LOOK || n < (state->size << 1)) {
+            /* get more output, looking for header if required */
+            if (gz_fetch(state) == -1)
+                return 0;
+            continue;       /* no progress yet -- go back to copy above */
+            /* the copy above assures that we will leave with space in the
+               output buffer, allowing at least one gzungetc() to succeed */
+        }
+
+        /* large len -- read directly into user buffer */
+        else if (state->how == COPY) {      /* read directly */
+            if (gz_load(state, (unsigned char *)buf, n, &n) == -1)
+                return 0;
+        }
+
+        /* large len -- decompress directly into user buffer */
+        else {  /* state->how == GZIP */
+            state->strm.avail_out = n;
+            state->strm.next_out = (unsigned char *)buf;
+            if (gz_decomp(state) == -1)
+                return 0;
+            n = state->x.have;
+            state->x.have = 0;
+        }
+
+        /* update progress */
+        len -= n;
+        buf = (char *)buf + n;
+        got += n;
+        state->x.pos += n;
+    } while (len);
+
+    /* return number of bytes read into user buffer */
+    return got;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzread(file, buf, len)
+    gzFile file;
+    voidp buf;
+    unsigned len;
+{
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* since an int is returned, make sure len fits in one, otherwise return
+       with an error (this avoids a flaw in the interface) */
+    if ((int)len < 0) {
+        gz_error(state, Z_STREAM_ERROR, "request does not fit in an int");
+        return -1;
+    }
+
+    /* read len or fewer bytes to buf */
+    len = (unsigned)gz_read(state, buf, len);
+
+    /* check for an error */
+    if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR)
+        return -1;
+
+    /* return the number of bytes read (this is assured to fit in an int) */
+    return (int)len;
+}
+
+/* -- see zlib.h -- */
+z_size_t ZEXPORT gzfread(buf, size, nitems, file)
+    voidp buf;
+    z_size_t size;
+    z_size_t nitems;
+    gzFile file;
+{
+    z_size_t len;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return 0;
+
+    /* compute bytes to read -- error on overflow */
+    len = nitems * size;
+    if (size && len / size != nitems) {
+        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
+        return 0;
+    }
+
+    /* read len or fewer bytes to buf, return the number of full items read */
+    return len ? gz_read(state, buf, len) / size : 0;
+}
+
+/* -- see zlib.h -- */
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#else
+#  undef gzgetc
+#endif
+int ZEXPORT gzgetc(file)
+    gzFile file;
+{
+    unsigned char buf[1];
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* try output buffer (no need to check for skip request) */
+    if (state->x.have) {
+        state->x.have--;
+        state->x.pos++;
+        return *(state->x.next)++;
+    }
+
+    /* nothing there -- try gz_read() */
+    return gz_read(state, buf, 1) < 1 ? -1 : buf[0];
+}
+
+int ZEXPORT gzgetc_(file)
+gzFile file;
+{
+    return gzgetc(file);
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzungetc(c, file)
+    int c;
+    gzFile file;
+{
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* process a skip request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_skip(state, state->skip) == -1)
+            return -1;
+    }
+
+    /* can't push EOF */
+    if (c < 0)
+        return -1;
+
+    /* if output buffer empty, put byte at end (allows more pushing) */
+    if (state->x.have == 0) {
+        state->x.have = 1;
+        state->x.next = state->out + (state->size << 1) - 1;
+        state->x.next[0] = (unsigned char)c;
+        state->x.pos--;
+        state->past = 0;
+        return c;
+    }
+
+    /* if no room, give up (must have already done a gzungetc()) */
+    if (state->x.have == (state->size << 1)) {
+        gz_error(state, Z_DATA_ERROR, "out of room to push characters");
+        return -1;
+    }
+
+    /* slide output data if needed and insert byte before existing data */
+    if (state->x.next == state->out) {
+        unsigned char *src = state->out + state->x.have;
+        unsigned char *dest = state->out + (state->size << 1);
+        while (src > state->out)
+            *--dest = *--src;
+        state->x.next = dest;
+    }
+    state->x.have++;
+    state->x.next--;
+    state->x.next[0] = (unsigned char)c;
+    state->x.pos--;
+    state->past = 0;
+    return c;
+}
+
+/* -- see zlib.h -- */
+char * ZEXPORT gzgets(file, buf, len)
+    gzFile file;
+    char *buf;
+    int len;
+{
+    unsigned left, n;
+    char *str;
+    unsigned char *eol;
+    gz_statep state;
+
+    /* check parameters and get internal structure */
+    if (file == NULL || buf == NULL || len < 1)
+        return NULL;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return NULL;
+
+    /* process a skip request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_skip(state, state->skip) == -1)
+            return NULL;
+    }
+
+    /* copy output bytes up to new line or len - 1, whichever comes first --
+       append a terminating zero to the string (we don't check for a zero in
+       the contents, let the user worry about that) */
+    str = buf;
+    left = (unsigned)len - 1;
+    if (left) do {
+        /* assure that something is in the output buffer */
+        if (state->x.have == 0 && gz_fetch(state) == -1)
+            return NULL;                /* error */
+        if (state->x.have == 0) {       /* end of file */
+            state->past = 1;            /* read past end */
+            break;                      /* return what we have */
+        }
+
+        /* look for end-of-line in current output buffer */
+        n = state->x.have > left ? left : state->x.have;
+        eol = (unsigned char *)memchr(state->x.next, '\n', n);
+        if (eol != NULL)
+            n = (unsigned)(eol - state->x.next) + 1;
+
+        /* copy through end-of-line, or remainder if not found */
+        memcpy(buf, state->x.next, n);
+        state->x.have -= n;
+        state->x.next += n;
+        state->x.pos += n;
+        left -= n;
+        buf += n;
+    } while (left && eol == NULL);
+
+    /* return terminated string, or if nothing, end of file */
+    if (buf == str)
+        return NULL;
+    buf[0] = 0;
+    return str;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzdirect(file)
+    gzFile file;
+{
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* if the state is not known, but we can find out, then do so (this is
+       mainly for right after a gzopen() or gzdopen()) */
+    if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
+        (void)gz_look(state);
+
+    /* return 1 if transparent, 0 if processing a gzip stream */
+    return state->direct;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzclose_r(file)
+    gzFile file;
+{
+    int ret, err;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    /* check that we're reading */
+    if (state->mode != GZ_READ)
+        return Z_STREAM_ERROR;
+
+    /* free memory and close file */
+    if (state->size) {
+        inflateEnd(&(state->strm));
+        free(state->out);
+        free(state->in);
+    }
+    err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK;
+    gz_error(state, Z_OK, NULL);
+    free(state->path);
+    ret = close(state->fd);
+    free(state);
+    return ret ? Z_ERRNO : err;
+}
diff --git a/lib/zlib/gzwrite.c b/lib/zlib/gzwrite.c
new file mode 100644
index 0000000..eb8a0e5
--- /dev/null
+++ b/lib/zlib/gzwrite.c
@@ -0,0 +1,677 @@
+/* gzwrite.c -- zlib functions for writing gzip files
+ * Copyright (C) 2004-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* Local functions */
+local int gz_init OF((gz_statep));
+local int gz_comp OF((gz_statep, int));
+local int gz_zero OF((gz_statep, z_off64_t));
+local z_size_t gz_write OF((gz_statep, voidpc, z_size_t));
+
+/* Initialize state for writing a gzip file.  Mark initialization by setting
+   state->size to non-zero.  Return -1 on a memory allocation failure, or 0 on
+   success. */
+local int gz_init(state)
+    gz_statep state;
+{
+    int ret;
+    z_streamp strm = &(state->strm);
+
+    /* allocate input buffer (double size for gzprintf) */
+    state->in = (unsigned char *)malloc(state->want << 1);
+    if (state->in == NULL) {
+        gz_error(state, Z_MEM_ERROR, "out of memory");
+        return -1;
+    }
+
+    /* only need output buffer and deflate state if compressing */
+    if (!state->direct) {
+        /* allocate output buffer */
+        state->out = (unsigned char *)malloc(state->want);
+        if (state->out == NULL) {
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+
+        /* allocate deflate memory, set up for gzip compression */
+        strm->zalloc = Z_NULL;
+        strm->zfree = Z_NULL;
+        strm->opaque = Z_NULL;
+        ret = deflateInit2(strm, state->level, Z_DEFLATED,
+                           MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
+        if (ret != Z_OK) {
+            free(state->out);
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+        strm->next_in = NULL;
+    }
+
+    /* mark state as initialized */
+    state->size = state->want;
+
+    /* initialize write buffer if compressing */
+    if (!state->direct) {
+        strm->avail_out = state->size;
+        strm->next_out = state->out;
+        state->x.next = strm->next_out;
+    }
+    return 0;
+}
+
+/* Compress whatever is at avail_in and next_in and write to the output file.
+   Return -1 if there is an error writing to the output file or if gz_init()
+   fails to allocate memory, otherwise 0.  flush is assumed to be a valid
+   deflate() flush value.  If flush is Z_FINISH, then the deflate() state is
+   reset to start a new gzip stream.  If gz->direct is true, then simply write
+   to the output file without compressing, and ignore flush. */
+local int gz_comp(state, flush)
+    gz_statep state;
+    int flush;
+{
+    int ret, writ;
+    unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
+    z_streamp strm = &(state->strm);
+
+    /* allocate memory if this is the first time through */
+    if (state->size == 0 && gz_init(state) == -1)
+        return -1;
+
+    /* write directly if requested */
+    if (state->direct) {
+        while (strm->avail_in) {
+            put = strm->avail_in > max ? max : strm->avail_in;
+            writ = write(state->fd, strm->next_in, put);
+            if (writ < 0) {
+                gz_error(state, Z_ERRNO, zstrerror());
+                return -1;
+            }
+            strm->avail_in -= (unsigned)writ;
+            strm->next_in += writ;
+        }
+        return 0;
+    }
+
+    /* check for a pending reset */
+    if (state->reset) {
+        /* don't start a new gzip member unless there is data to write */
+        if (strm->avail_in == 0)
+            return 0;
+        deflateReset(strm);
+        state->reset = 0;
+    }
+
+    /* run deflate() on provided input until it produces no more output */
+    ret = Z_OK;
+    do {
+        /* write out current buffer contents if full, or if flushing, but if
+           doing Z_FINISH then don't write until we get to Z_STREAM_END */
+        if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
+            (flush != Z_FINISH || ret == Z_STREAM_END))) {
+            while (strm->next_out > state->x.next) {
+                put = strm->next_out - state->x.next > (int)max ? max :
+                      (unsigned)(strm->next_out - state->x.next);
+                writ = write(state->fd, state->x.next, put);
+                if (writ < 0) {
+                    gz_error(state, Z_ERRNO, zstrerror());
+                    return -1;
+                }
+                state->x.next += writ;
+            }
+            if (strm->avail_out == 0) {
+                strm->avail_out = state->size;
+                strm->next_out = state->out;
+                state->x.next = state->out;
+            }
+        }
+
+        /* compress */
+        have = strm->avail_out;
+        ret = deflate(strm, flush);
+        if (ret == Z_STREAM_ERROR) {
+            gz_error(state, Z_STREAM_ERROR,
+                      "internal error: deflate stream corrupt");
+            return -1;
+        }
+        have -= strm->avail_out;
+    } while (have);
+
+    /* if that completed a deflate stream, allow another to start */
+    if (flush == Z_FINISH)
+        state->reset = 1;
+
+    /* all done, no errors */
+    return 0;
+}
+
+/* Compress len zeros to output.  Return -1 on a write error or memory
+   allocation failure by gz_comp(), or 0 on success. */
+local int gz_zero(state, len)
+    gz_statep state;
+    z_off64_t len;
+{
+    int first;
+    unsigned n;
+    z_streamp strm = &(state->strm);
+
+    /* consume whatever's left in the input buffer */
+    if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
+        return -1;
+
+    /* compress len zeros (len guaranteed > 0) */
+    first = 1;
+    while (len) {
+        n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
+            (unsigned)len : state->size;
+        if (first) {
+            memset(state->in, 0, n);
+            first = 0;
+        }
+        strm->avail_in = n;
+        strm->next_in = state->in;
+        state->x.pos += n;
+        if (gz_comp(state, Z_NO_FLUSH) == -1)
+            return -1;
+        len -= n;
+    }
+    return 0;
+}
+
+/* Write len bytes from buf to file.  Return the number of bytes written.  If
+   the returned value is less than len, then there was an error. */
+local z_size_t gz_write(state, buf, len)
+    gz_statep state;
+    voidpc buf;
+    z_size_t len;
+{
+    z_size_t put = len;
+
+    /* if len is zero, avoid unnecessary operations */
+    if (len == 0)
+        return 0;
+
+    /* allocate memory if this is the first time through */
+    if (state->size == 0 && gz_init(state) == -1)
+        return 0;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return 0;
+    }
+
+    /* for small len, copy to input buffer, otherwise compress directly */
+    if (len < state->size) {
+        /* copy to input buffer, compress when full */
+        do {
+            unsigned have, copy;
+
+            if (state->strm.avail_in == 0)
+                state->strm.next_in = state->in;
+            have = (unsigned)((state->strm.next_in + state->strm.avail_in) -
+                              state->in);
+            copy = state->size - have;
+            if (copy > len)
+                copy = (unsigned)len;
+            memcpy(state->in + have, buf, copy);
+            state->strm.avail_in += copy;
+            state->x.pos += copy;
+            buf = (const char *)buf + copy;
+            len -= copy;
+            if (len && gz_comp(state, Z_NO_FLUSH) == -1)
+                return 0;
+        } while (len);
+    }
+    else {
+        /* consume whatever's left in the input buffer */
+        if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
+            return 0;
+
+        /* directly compress user buffer to file */
+        state->strm.next_in = (z_const Bytef *)buf;
+        do {
+            unsigned n = (unsigned)-1;
+            if (n > len)
+                n = (unsigned)len;
+            state->strm.avail_in = n;
+            state->x.pos += n;
+            if (gz_comp(state, Z_NO_FLUSH) == -1)
+                return 0;
+            len -= n;
+        } while (len);
+    }
+
+    /* input was all buffered or compressed */
+    return put;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzwrite(file, buf, len)
+    gzFile file;
+    voidpc buf;
+    unsigned len;
+{
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return 0;
+
+    /* since an int is returned, make sure len fits in one, otherwise return
+       with an error (this avoids a flaw in the interface) */
+    if ((int)len < 0) {
+        gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
+        return 0;
+    }
+
+    /* write len bytes from buf (the return value will fit in an int) */
+    return (int)gz_write(state, buf, len);
+}
+
+/* -- see zlib.h -- */
+z_size_t ZEXPORT gzfwrite(buf, size, nitems, file)
+    voidpc buf;
+    z_size_t size;
+    z_size_t nitems;
+    gzFile file;
+{
+    z_size_t len;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return 0;
+
+    /* compute bytes to read -- error on overflow */
+    len = nitems * size;
+    if (size && len / size != nitems) {
+        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
+        return 0;
+    }
+
+    /* write len bytes to buf, return the number of full items written */
+    return len ? gz_write(state, buf, len) / size : 0;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzputc(file, c)
+    gzFile file;
+    int c;
+{
+    unsigned have;
+    unsigned char buf[1];
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return -1;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return -1;
+    }
+
+    /* try writing to input buffer for speed (state->size == 0 if buffer not
+       initialized) */
+    if (state->size) {
+        if (strm->avail_in == 0)
+            strm->next_in = state->in;
+        have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
+        if (have < state->size) {
+            state->in[have] = (unsigned char)c;
+            strm->avail_in++;
+            state->x.pos++;
+            return c & 0xff;
+        }
+    }
+
+    /* no room in buffer or not initialized, use gz_write() */
+    buf[0] = (unsigned char)c;
+    if (gz_write(state, buf, 1) != 1)
+        return -1;
+    return c & 0xff;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzputs(file, s)
+    gzFile file;
+    const char *s;
+{
+    z_size_t len, put;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return -1;
+
+    /* write string */
+    len = strlen(s);
+    if ((int)len < 0 || (unsigned)len != len) {
+        gz_error(state, Z_STREAM_ERROR, "string length does not fit in int");
+        return -1;
+    }
+    put = gz_write(state, s, len);
+    return put < len ? -1 : (int)len;
+}
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#include <stdarg.h>
+
+/* -- see zlib.h -- */
+int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
+{
+    int len;
+    unsigned left;
+    char *next;
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* make sure we have some buffer space */
+    if (state->size == 0 && gz_init(state) == -1)
+        return state->err;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->err;
+    }
+
+    /* do the printf() into the input buffer, put length in len -- the input
+       buffer is double-sized just for this function, so there is guaranteed to
+       be state->size bytes available after the current contents */
+    if (strm->avail_in == 0)
+        strm->next_in = state->in;
+    next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in);
+    next[state->size - 1] = 0;
+#ifdef NO_vsnprintf
+#  ifdef HAS_vsprintf_void
+    (void)vsprintf(next, format, va);
+    for (len = 0; len < state->size; len++)
+        if (next[len] == 0) break;
+#  else
+    len = vsprintf(next, format, va);
+#  endif
+#else
+#  ifdef HAS_vsnprintf_void
+    (void)vsnprintf(next, state->size, format, va);
+    len = strlen(next);
+#  else
+    len = vsnprintf(next, state->size, format, va);
+#  endif
+#endif
+
+    /* check that printf() results fit in buffer */
+    if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0)
+        return 0;
+
+    /* update buffer and position, compress first half if past that */
+    strm->avail_in += (unsigned)len;
+    state->x.pos += len;
+    if (strm->avail_in >= state->size) {
+        left = strm->avail_in - state->size;
+        strm->avail_in = state->size;
+        if (gz_comp(state, Z_NO_FLUSH) == -1)
+            return state->err;
+        memmove(state->in, state->in + state->size, left);
+        strm->next_in = state->in;
+        strm->avail_in = left;
+    }
+    return len;
+}
+
+int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
+{
+    va_list va;
+    int ret;
+
+    va_start(va, format);
+    ret = gzvprintf(file, format, va);
+    va_end(va);
+    return ret;
+}
+
+#else /* !STDC && !Z_HAVE_STDARG_H */
+
+/* -- see zlib.h -- */
+int ZEXPORTVA gzprintf(file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
+                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
+    gzFile file;
+    const char *format;
+    int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
+        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
+{
+    unsigned len, left;
+    char *next;
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that can really pass pointer in ints */
+    if (sizeof(int) != sizeof(void *))
+        return Z_STREAM_ERROR;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* make sure we have some buffer space */
+    if (state->size == 0 && gz_init(state) == -1)
+        return state->error;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->error;
+    }
+
+    /* do the printf() into the input buffer, put length in len -- the input
+       buffer is double-sized just for this function, so there is guaranteed to
+       be state->size bytes available after the current contents */
+    if (strm->avail_in == 0)
+        strm->next_in = state->in;
+    next = (char *)(strm->next_in + strm->avail_in);
+    next[state->size - 1] = 0;
+#ifdef NO_snprintf
+#  ifdef HAS_sprintf_void
+    sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12,
+            a13, a14, a15, a16, a17, a18, a19, a20);
+    for (len = 0; len < size; len++)
+        if (next[len] == 0)
+            break;
+#  else
+    len = sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11,
+                  a12, a13, a14, a15, a16, a17, a18, a19, a20);
+#  endif
+#else
+#  ifdef HAS_snprintf_void
+    snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9,
+             a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+    len = strlen(next);
+#  else
+    len = snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8,
+                   a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+#  endif
+#endif
+
+    /* check that printf() results fit in buffer */
+    if (len == 0 || len >= state->size || next[state->size - 1] != 0)
+        return 0;
+
+    /* update buffer and position, compress first half if past that */
+    strm->avail_in += len;
+    state->x.pos += len;
+    if (strm->avail_in >= state->size) {
+        left = strm->avail_in - state->size;
+        strm->avail_in = state->size;
+        if (gz_comp(state, Z_NO_FLUSH) == -1)
+            return state->err;
+        memmove(state->in, state->in + state->size, left);
+        strm->next_in = state->in;
+        strm->avail_in = left;
+    }
+    return (int)len;
+}
+
+#endif
+
+/* -- see zlib.h -- */
+int ZEXPORT gzflush(file, flush)
+    gzFile file;
+    int flush;
+{
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* check flush parameter */
+    if (flush < 0 || flush > Z_FINISH)
+        return Z_STREAM_ERROR;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->err;
+    }
+
+    /* compress remaining data with requested flush */
+    (void)gz_comp(state, flush);
+    return state->err;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzsetparams(file, level, strategy)
+    gzFile file;
+    int level;
+    int strategy;
+{
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* if no change is requested, then do nothing */
+    if (level == state->level && strategy == state->strategy)
+        return Z_OK;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->err;
+    }
+
+    /* change compression parameters for subsequent input */
+    if (state->size) {
+        /* flush previous input with previous parameters before changing */
+        if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1)
+            return state->err;
+        deflateParams(strm, level, strategy);
+    }
+    state->level = level;
+    state->strategy = strategy;
+    return Z_OK;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzclose_w(file)
+    gzFile file;
+{
+    int ret = Z_OK;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    /* check that we're writing */
+    if (state->mode != GZ_WRITE)
+        return Z_STREAM_ERROR;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            ret = state->err;
+    }
+
+    /* flush, free memory, and close file */
+    if (gz_comp(state, Z_FINISH) == -1)
+        ret = state->err;
+    if (state->size) {
+        if (!state->direct) {
+            (void)deflateEnd(&(state->strm));
+            free(state->out);
+        }
+        free(state->in);
+    }
+    gz_error(state, Z_OK, NULL);
+    free(state->path);
+    if (close(state->fd) == -1)
+        ret = Z_ERRNO;
+    free(state);
+    return ret;
+}
diff --git a/lib/zlib/infback.c b/lib/zlib/infback.c
new file mode 100644
index 0000000..8a14e52
--- /dev/null
+++ b/lib/zlib/infback.c
@@ -0,0 +1,644 @@
+/* infback.c -- inflate using a call-back interface
+ * Copyright (C) 1995-2022 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/*
+   This code is largely copied from inflate.c.  Normally either infback.o or
+   inflate.o would be linked into an application--not both.  The interface
+   with inffast.c is retained so that optimized assembler-coded versions of
+   inflate_fast() can be used with either inflate.c or infback.c.
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+
+/* function prototypes */
+local void fixedtables OF((struct inflate_state FAR *state));
+
+/*
+   strm provides memory allocation functions in zalloc and zfree, or
+   Z_NULL to use the library memory allocation functions.
+
+   windowBits is in the range 8..15, and window is a user-supplied
+   window and output buffer that is 2**windowBits bytes.
+ */
+int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
+z_streamp strm;
+int windowBits;
+unsigned char FAR *window;
+const char *version;
+int stream_size;
+{
+    struct inflate_state FAR *state;
+
+    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
+        stream_size != (int)(sizeof(z_stream)))
+        return Z_VERSION_ERROR;
+    if (strm == Z_NULL || window == Z_NULL ||
+        windowBits < 8 || windowBits > 15)
+        return Z_STREAM_ERROR;
+    strm->msg = Z_NULL;                 /* in case we return an error */
+    if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zalloc = zcalloc;
+        strm->opaque = (voidpf)0;
+#endif
+    }
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+    strm->zfree = zcfree;
+#endif
+    state = (struct inflate_state FAR *)ZALLOC(strm, 1,
+                                               sizeof(struct inflate_state));
+    if (state == Z_NULL) return Z_MEM_ERROR;
+    Tracev((stderr, "inflate: allocated\n"));
+    strm->state = (struct internal_state FAR *)state;
+    state->dmax = 32768U;
+    state->wbits = (uInt)windowBits;
+    state->wsize = 1U << windowBits;
+    state->window = window;
+    state->wnext = 0;
+    state->whave = 0;
+    state->sane = 1;
+    return Z_OK;
+}
+
+/*
+   Return state with length and distance decoding tables and index sizes set to
+   fixed code decoding.  Normally this returns fixed tables from inffixed.h.
+   If BUILDFIXED is defined, then instead this routine builds the tables the
+   first time it's called, and returns those tables the first time and
+   thereafter.  This reduces the size of the code by about 2K bytes, in
+   exchange for a little execution time.  However, BUILDFIXED should not be
+   used for threaded applications, since the rewriting of the tables and virgin
+   may not be thread-safe.
+ */
+local void fixedtables(state)
+struct inflate_state FAR *state;
+{
+#ifdef BUILDFIXED
+    static int virgin = 1;
+    static code *lenfix, *distfix;
+    static code fixed[544];
+
+    /* build fixed huffman tables if first call (may not be thread safe) */
+    if (virgin) {
+        unsigned sym, bits;
+        static code *next;
+
+        /* literal/length table */
+        sym = 0;
+        while (sym < 144) state->lens[sym++] = 8;
+        while (sym < 256) state->lens[sym++] = 9;
+        while (sym < 280) state->lens[sym++] = 7;
+        while (sym < 288) state->lens[sym++] = 8;
+        next = fixed;
+        lenfix = next;
+        bits = 9;
+        inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
+
+        /* distance table */
+        sym = 0;
+        while (sym < 32) state->lens[sym++] = 5;
+        distfix = next;
+        bits = 5;
+        inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
+
+        /* do this just once */
+        virgin = 0;
+    }
+#else /* !BUILDFIXED */
+#   include "inffixed.h"
+#endif /* BUILDFIXED */
+    state->lencode = lenfix;
+    state->lenbits = 9;
+    state->distcode = distfix;
+    state->distbits = 5;
+}
+
+/* Macros for inflateBack(): */
+
+/* Load returned state from inflate_fast() */
+#define LOAD() \
+    do { \
+        put = strm->next_out; \
+        left = strm->avail_out; \
+        next = strm->next_in; \
+        have = strm->avail_in; \
+        hold = state->hold; \
+        bits = state->bits; \
+    } while (0)
+
+/* Set state from registers for inflate_fast() */
+#define RESTORE() \
+    do { \
+        strm->next_out = put; \
+        strm->avail_out = left; \
+        strm->next_in = next; \
+        strm->avail_in = have; \
+        state->hold = hold; \
+        state->bits = bits; \
+    } while (0)
+
+/* Clear the input bit accumulator */
+#define INITBITS() \
+    do { \
+        hold = 0; \
+        bits = 0; \
+    } while (0)
+
+/* Assure that some input is available.  If input is requested, but denied,
+   then return a Z_BUF_ERROR from inflateBack(). */
+#define PULL() \
+    do { \
+        if (have == 0) { \
+            have = in(in_desc, &next); \
+            if (have == 0) { \
+                next = Z_NULL; \
+                ret = Z_BUF_ERROR; \
+                goto inf_leave; \
+            } \
+        } \
+    } while (0)
+
+/* Get a byte of input into the bit accumulator, or return from inflateBack()
+   with an error if there is no input available. */
+#define PULLBYTE() \
+    do { \
+        PULL(); \
+        have--; \
+        hold += (unsigned long)(*next++) << bits; \
+        bits += 8; \
+    } while (0)
+
+/* Assure that there are at least n bits in the bit accumulator.  If there is
+   not enough available input to do that, then return from inflateBack() with
+   an error. */
+#define NEEDBITS(n) \
+    do { \
+        while (bits < (unsigned)(n)) \
+            PULLBYTE(); \
+    } while (0)
+
+/* Return the low n bits of the bit accumulator (n < 16) */
+#define BITS(n) \
+    ((unsigned)hold & ((1U << (n)) - 1))
+
+/* Remove n bits from the bit accumulator */
+#define DROPBITS(n) \
+    do { \
+        hold >>= (n); \
+        bits -= (unsigned)(n); \
+    } while (0)
+
+/* Remove zero to seven bits as needed to go to a byte boundary */
+#define BYTEBITS() \
+    do { \
+        hold >>= bits & 7; \
+        bits -= bits & 7; \
+    } while (0)
+
+/* Assure that some output space is available, by writing out the window
+   if it's full.  If the write fails, return from inflateBack() with a
+   Z_BUF_ERROR. */
+#define ROOM() \
+    do { \
+        if (left == 0) { \
+            put = state->window; \
+            left = state->wsize; \
+            state->whave = left; \
+            if (out(out_desc, put, left)) { \
+                ret = Z_BUF_ERROR; \
+                goto inf_leave; \
+            } \
+        } \
+    } while (0)
+
+/*
+   strm provides the memory allocation functions and window buffer on input,
+   and provides information on the unused input on return.  For Z_DATA_ERROR
+   returns, strm will also provide an error message.
+
+   in() and out() are the call-back input and output functions.  When
+   inflateBack() needs more input, it calls in().  When inflateBack() has
+   filled the window with output, or when it completes with data in the
+   window, it calls out() to write out the data.  The application must not
+   change the provided input until in() is called again or inflateBack()
+   returns.  The application must not change the window/output buffer until
+   inflateBack() returns.
+
+   in() and out() are called with a descriptor parameter provided in the
+   inflateBack() call.  This parameter can be a structure that provides the
+   information required to do the read or write, as well as accumulated
+   information on the input and output such as totals and check values.
+
+   in() should return zero on failure.  out() should return non-zero on
+   failure.  If either in() or out() fails, than inflateBack() returns a
+   Z_BUF_ERROR.  strm->next_in can be checked for Z_NULL to see whether it
+   was in() or out() that caused in the error.  Otherwise,  inflateBack()
+   returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
+   error, or Z_MEM_ERROR if it could not allocate memory for the state.
+   inflateBack() can also return Z_STREAM_ERROR if the input parameters
+   are not correct, i.e. strm is Z_NULL or the state was not initialized.
+ */
+int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
+z_streamp strm;
+in_func in;
+void FAR *in_desc;
+out_func out;
+void FAR *out_desc;
+{
+    struct inflate_state FAR *state;
+    z_const unsigned char FAR *next;    /* next input */
+    unsigned char FAR *put;     /* next output */
+    unsigned have, left;        /* available input and output */
+    unsigned long hold;         /* bit buffer */
+    unsigned bits;              /* bits in bit buffer */
+    unsigned copy;              /* number of stored or match bytes to copy */
+    unsigned char FAR *from;    /* where to copy match bytes from */
+    code here;                  /* current decoding table entry */
+    code last;                  /* parent table entry */
+    unsigned len;               /* length to copy for repeats, bits to drop */
+    int ret;                    /* return code */
+    static const unsigned short order[19] = /* permutation of code lengths */
+        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+    /* Check that the strm exists and that the state was initialized */
+    if (strm == Z_NULL || strm->state == Z_NULL)
+        return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* Reset the state */
+    strm->msg = Z_NULL;
+    state->mode = TYPE;
+    state->last = 0;
+    state->whave = 0;
+    next = strm->next_in;
+    have = next != Z_NULL ? strm->avail_in : 0;
+    hold = 0;
+    bits = 0;
+    put = state->window;
+    left = state->wsize;
+
+    /* Inflate until end of block marked as last */
+    for (;;)
+        switch (state->mode) {
+        case TYPE:
+            /* determine and dispatch block type */
+            if (state->last) {
+                BYTEBITS();
+                state->mode = DONE;
+                break;
+            }
+            NEEDBITS(3);
+            state->last = BITS(1);
+            DROPBITS(1);
+            switch (BITS(2)) {
+            case 0:                             /* stored block */
+                Tracev((stderr, "inflate:     stored block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = STORED;
+                break;
+            case 1:                             /* fixed block */
+                fixedtables(state);
+                Tracev((stderr, "inflate:     fixed codes block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = LEN;              /* decode codes */
+                break;
+            case 2:                             /* dynamic block */
+                Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = TABLE;
+                break;
+            case 3:
+                strm->msg = (char *)"invalid block type";
+                state->mode = BAD;
+            }
+            DROPBITS(2);
+            break;
+
+        case STORED:
+            /* get and verify stored block length */
+            BYTEBITS();                         /* go to byte boundary */
+            NEEDBITS(32);
+            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
+                strm->msg = (char *)"invalid stored block lengths";
+                state->mode = BAD;
+                break;
+            }
+            state->length = (unsigned)hold & 0xffff;
+            Tracev((stderr, "inflate:       stored length %u\n",
+                    state->length));
+            INITBITS();
+
+            /* copy stored block from input to output */
+            while (state->length != 0) {
+                copy = state->length;
+                PULL();
+                ROOM();
+                if (copy > have) copy = have;
+                if (copy > left) copy = left;
+                zmemcpy(put, next, copy);
+                have -= copy;
+                next += copy;
+                left -= copy;
+                put += copy;
+                state->length -= copy;
+            }
+            Tracev((stderr, "inflate:       stored end\n"));
+            state->mode = TYPE;
+            break;
+
+        case TABLE:
+            /* get dynamic table entries descriptor */
+            NEEDBITS(14);
+            state->nlen = BITS(5) + 257;
+            DROPBITS(5);
+            state->ndist = BITS(5) + 1;
+            DROPBITS(5);
+            state->ncode = BITS(4) + 4;
+            DROPBITS(4);
+#ifndef PKZIP_BUG_WORKAROUND
+            if (state->nlen > 286 || state->ndist > 30) {
+                strm->msg = (char *)"too many length or distance symbols";
+                state->mode = BAD;
+                break;
+            }
+#endif
+            Tracev((stderr, "inflate:       table sizes ok\n"));
+
+            /* get code length code lengths (not a typo) */
+            state->have = 0;
+            while (state->have < state->ncode) {
+                NEEDBITS(3);
+                state->lens[order[state->have++]] = (unsigned short)BITS(3);
+                DROPBITS(3);
+            }
+            while (state->have < 19)
+                state->lens[order[state->have++]] = 0;
+            state->next = state->codes;
+            state->lencode = (code const FAR *)(state->next);
+            state->lenbits = 7;
+            ret = inflate_table(CODES, state->lens, 19, &(state->next),
+                                &(state->lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid code lengths set";
+                state->mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       code lengths ok\n"));
+
+            /* get length and distance code code lengths */
+            state->have = 0;
+            while (state->have < state->nlen + state->ndist) {
+                for (;;) {
+                    here = state->lencode[BITS(state->lenbits)];
+                    if ((unsigned)(here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                if (here.val < 16) {
+                    DROPBITS(here.bits);
+                    state->lens[state->have++] = here.val;
+                }
+                else {
+                    if (here.val == 16) {
+                        NEEDBITS(here.bits + 2);
+                        DROPBITS(here.bits);
+                        if (state->have == 0) {
+                            strm->msg = (char *)"invalid bit length repeat";
+                            state->mode = BAD;
+                            break;
+                        }
+                        len = (unsigned)(state->lens[state->have - 1]);
+                        copy = 3 + BITS(2);
+                        DROPBITS(2);
+                    }
+                    else if (here.val == 17) {
+                        NEEDBITS(here.bits + 3);
+                        DROPBITS(here.bits);
+                        len = 0;
+                        copy = 3 + BITS(3);
+                        DROPBITS(3);
+                    }
+                    else {
+                        NEEDBITS(here.bits + 7);
+                        DROPBITS(here.bits);
+                        len = 0;
+                        copy = 11 + BITS(7);
+                        DROPBITS(7);
+                    }
+                    if (state->have + copy > state->nlen + state->ndist) {
+                        strm->msg = (char *)"invalid bit length repeat";
+                        state->mode = BAD;
+                        break;
+                    }
+                    while (copy--)
+                        state->lens[state->have++] = (unsigned short)len;
+                }
+            }
+
+            /* handle error breaks in while */
+            if (state->mode == BAD) break;
+
+            /* check for end-of-block code (better have one) */
+            if (state->lens[256] == 0) {
+                strm->msg = (char *)"invalid code -- missing end-of-block";
+                state->mode = BAD;
+                break;
+            }
+
+            /* build code tables -- note: do not change the lenbits or distbits
+               values here (9 and 6) without reading the comments in inftrees.h
+               concerning the ENOUGH constants, which depend on those values */
+            state->next = state->codes;
+            state->lencode = (code const FAR *)(state->next);
+            state->lenbits = 9;
+            ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
+                                &(state->lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid literal/lengths set";
+                state->mode = BAD;
+                break;
+            }
+            state->distcode = (code const FAR *)(state->next);
+            state->distbits = 6;
+            ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
+                            &(state->next), &(state->distbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid distances set";
+                state->mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       codes ok\n"));
+            state->mode = LEN;
+            ZFALLTHROUGH;
+
+        case LEN:
+            /* use inflate_fast() if we have enough input and output */
+            if (have >= 6 && left >= 258) {
+                RESTORE();
+                if (state->whave < state->wsize)
+                    state->whave = state->wsize - left;
+                inflate_fast(strm, state->wsize);
+                LOAD();
+                break;
+            }
+
+            /* get a literal, length, or end-of-block code */
+            for (;;) {
+                here = state->lencode[BITS(state->lenbits)];
+                if ((unsigned)(here.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if (here.op && (here.op & 0xf0) == 0) {
+                last = here;
+                for (;;) {
+                    here = state->lencode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+            }
+            DROPBITS(here.bits);
+            state->length = (unsigned)here.val;
+
+            /* process literal */
+            if (here.op == 0) {
+                Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+                        "inflate:         literal '%c'\n" :
+                        "inflate:         literal 0x%02x\n", here.val));
+                ROOM();
+                *put++ = (unsigned char)(state->length);
+                left--;
+                state->mode = LEN;
+                break;
+            }
+
+            /* process end of block */
+            if (here.op & 32) {
+                Tracevv((stderr, "inflate:         end of block\n"));
+                state->mode = TYPE;
+                break;
+            }
+
+            /* invalid code */
+            if (here.op & 64) {
+                strm->msg = (char *)"invalid literal/length code";
+                state->mode = BAD;
+                break;
+            }
+
+            /* length code -- get extra bits, if any */
+            state->extra = (unsigned)(here.op) & 15;
+            if (state->extra != 0) {
+                NEEDBITS(state->extra);
+                state->length += BITS(state->extra);
+                DROPBITS(state->extra);
+            }
+            Tracevv((stderr, "inflate:         length %u\n", state->length));
+
+            /* get distance code */
+            for (;;) {
+                here = state->distcode[BITS(state->distbits)];
+                if ((unsigned)(here.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if ((here.op & 0xf0) == 0) {
+                last = here;
+                for (;;) {
+                    here = state->distcode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+            }
+            DROPBITS(here.bits);
+            if (here.op & 64) {
+                strm->msg = (char *)"invalid distance code";
+                state->mode = BAD;
+                break;
+            }
+            state->offset = (unsigned)here.val;
+
+            /* get distance extra bits, if any */
+            state->extra = (unsigned)(here.op) & 15;
+            if (state->extra != 0) {
+                NEEDBITS(state->extra);
+                state->offset += BITS(state->extra);
+                DROPBITS(state->extra);
+            }
+            if (state->offset > state->wsize - (state->whave < state->wsize ?
+                                                left : 0)) {
+                strm->msg = (char *)"invalid distance too far back";
+                state->mode = BAD;
+                break;
+            }
+            Tracevv((stderr, "inflate:         distance %u\n", state->offset));
+
+            /* copy match from window to output */
+            do {
+                ROOM();
+                copy = state->wsize - state->offset;
+                if (copy < left) {
+                    from = put + copy;
+                    copy = left - copy;
+                }
+                else {
+                    from = put - state->offset;
+                    copy = left;
+                }
+                if (copy > state->length) copy = state->length;
+                state->length -= copy;
+                left -= copy;
+                do {
+                    *put++ = *from++;
+                } while (--copy);
+            } while (state->length != 0);
+            break;
+
+        case DONE:
+            /* inflate stream terminated properly */
+            ret = Z_STREAM_END;
+            goto inf_leave;
+
+        case BAD:
+            ret = Z_DATA_ERROR;
+            goto inf_leave;
+
+        default:
+            /* can't happen, but makes compilers happy */
+            ret = Z_STREAM_ERROR;
+            goto inf_leave;
+        }
+
+    /* Write leftover output and return unused input */
+  inf_leave:
+    if (left < state->wsize) {
+        if (out(out_desc, state->window, state->wsize - left) &&
+            ret == Z_STREAM_END)
+            ret = Z_BUF_ERROR;
+    }
+    strm->next_in = next;
+    strm->avail_in = have;
+    return ret;
+}
+
+int ZEXPORT inflateBackEnd(strm)
+z_streamp strm;
+{
+    if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
+        return Z_STREAM_ERROR;
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+    Tracev((stderr, "inflate: end\n"));
+    return Z_OK;
+}
diff --git a/lib/zlib/inffast.c b/lib/zlib/inffast.c
new file mode 100644
index 0000000..1fec7f3
--- /dev/null
+++ b/lib/zlib/inffast.c
@@ -0,0 +1,323 @@
+/* inffast.c -- fast decoding
+ * Copyright (C) 1995-2017 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+
+#ifdef ASMINF
+#  pragma message("Assembler code may have bugs -- use at your own risk")
+#else
+
+/*
+   Decode literal, length, and distance codes and write out the resulting
+   literal and match bytes until either not enough input or output is
+   available, an end-of-block is encountered, or a data error is encountered.
+   When large enough input and output buffers are supplied to inflate(), for
+   example, a 16K input buffer and a 64K output buffer, more than 95% of the
+   inflate execution time is spent in this routine.
+
+   Entry assumptions:
+
+        state->mode == LEN
+        strm->avail_in >= 6
+        strm->avail_out >= 258
+        start >= strm->avail_out
+        state->bits < 8
+
+   On return, state->mode is one of:
+
+        LEN -- ran out of enough output space or enough available input
+        TYPE -- reached end of block code, inflate() to interpret next block
+        BAD -- error in block data
+
+   Notes:
+
+    - The maximum input bits used by a length/distance pair is 15 bits for the
+      length code, 5 bits for the length extra, 15 bits for the distance code,
+      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
+      Therefore if strm->avail_in >= 6, then there is enough input to avoid
+      checking for available input while decoding.
+
+    - The maximum bytes that a single length/distance pair can output is 258
+      bytes, which is the maximum length that can be coded.  inflate_fast()
+      requires strm->avail_out >= 258 for each loop to avoid checking for
+      output space.
+ */
+void ZLIB_INTERNAL inflate_fast(strm, start)
+z_streamp strm;
+unsigned start;         /* inflate()'s starting value for strm->avail_out */
+{
+    struct inflate_state FAR *state;
+    z_const unsigned char FAR *in;      /* local strm->next_in */
+    z_const unsigned char FAR *last;    /* have enough input while in < last */
+    unsigned char FAR *out;     /* local strm->next_out */
+    unsigned char FAR *beg;     /* inflate()'s initial strm->next_out */
+    unsigned char FAR *end;     /* while out < end, enough space available */
+#ifdef INFLATE_STRICT
+    unsigned dmax;              /* maximum distance from zlib header */
+#endif
+    unsigned wsize;             /* window size or zero if not using window */
+    unsigned whave;             /* valid bytes in the window */
+    unsigned wnext;             /* window write index */
+    unsigned char FAR *window;  /* allocated sliding window, if wsize != 0 */
+    unsigned long hold;         /* local strm->hold */
+    unsigned bits;              /* local strm->bits */
+    code const FAR *lcode;      /* local strm->lencode */
+    code const FAR *dcode;      /* local strm->distcode */
+    unsigned lmask;             /* mask for first level of length codes */
+    unsigned dmask;             /* mask for first level of distance codes */
+    code const *here;           /* retrieved table entry */
+    unsigned op;                /* code bits, operation, extra bits, or */
+                                /*  window position, window bytes to copy */
+    unsigned len;               /* match length, unused bytes */
+    unsigned dist;              /* match distance */
+    unsigned char FAR *from;    /* where to copy match from */
+
+    /* copy state to local variables */
+    state = (struct inflate_state FAR *)strm->state;
+    in = strm->next_in;
+    last = in + (strm->avail_in - 5);
+    out = strm->next_out;
+    beg = out - (start - strm->avail_out);
+    end = out + (strm->avail_out - 257);
+#ifdef INFLATE_STRICT
+    dmax = state->dmax;
+#endif
+    wsize = state->wsize;
+    whave = state->whave;
+    wnext = state->wnext;
+    window = state->window;
+    hold = state->hold;
+    bits = state->bits;
+    lcode = state->lencode;
+    dcode = state->distcode;
+    lmask = (1U << state->lenbits) - 1;
+    dmask = (1U << state->distbits) - 1;
+
+    /* decode literals and length/distances until end-of-block or not enough
+       input data or output space */
+    do {
+        if (bits < 15) {
+            hold += (unsigned long)(*in++) << bits;
+            bits += 8;
+            hold += (unsigned long)(*in++) << bits;
+            bits += 8;
+        }
+        here = lcode + (hold & lmask);
+      dolen:
+        op = (unsigned)(here->bits);
+        hold >>= op;
+        bits -= op;
+        op = (unsigned)(here->op);
+        if (op == 0) {                          /* literal */
+            Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ?
+                    "inflate:         literal '%c'\n" :
+                    "inflate:         literal 0x%02x\n", here->val));
+            *out++ = (unsigned char)(here->val);
+        }
+        else if (op & 16) {                     /* length base */
+            len = (unsigned)(here->val);
+            op &= 15;                           /* number of extra bits */
+            if (op) {
+                if (bits < op) {
+                    hold += (unsigned long)(*in++) << bits;
+                    bits += 8;
+                }
+                len += (unsigned)hold & ((1U << op) - 1);
+                hold >>= op;
+                bits -= op;
+            }
+            Tracevv((stderr, "inflate:         length %u\n", len));
+            if (bits < 15) {
+                hold += (unsigned long)(*in++) << bits;
+                bits += 8;
+                hold += (unsigned long)(*in++) << bits;
+                bits += 8;
+            }
+            here = dcode + (hold & dmask);
+          dodist:
+            op = (unsigned)(here->bits);
+            hold >>= op;
+            bits -= op;
+            op = (unsigned)(here->op);
+            if (op & 16) {                      /* distance base */
+                dist = (unsigned)(here->val);
+                op &= 15;                       /* number of extra bits */
+                if (bits < op) {
+                    hold += (unsigned long)(*in++) << bits;
+                    bits += 8;
+                    if (bits < op) {
+                        hold += (unsigned long)(*in++) << bits;
+                        bits += 8;
+                    }
+                }
+                dist += (unsigned)hold & ((1U << op) - 1);
+#ifdef INFLATE_STRICT
+                if (dist > dmax) {
+                    strm->msg = (char *)"invalid distance too far back";
+                    state->mode = BAD;
+                    break;
+                }
+#endif
+                hold >>= op;
+                bits -= op;
+                Tracevv((stderr, "inflate:         distance %u\n", dist));
+                op = (unsigned)(out - beg);     /* max distance in output */
+                if (dist > op) {                /* see if copy from window */
+                    op = dist - op;             /* distance back in window */
+                    if (op > whave) {
+                        if (state->sane) {
+                            strm->msg =
+                                (char *)"invalid distance too far back";
+                            state->mode = BAD;
+                            break;
+                        }
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+                        if (len <= op - whave) {
+                            do {
+                                *out++ = 0;
+                            } while (--len);
+                            continue;
+                        }
+                        len -= op - whave;
+                        do {
+                            *out++ = 0;
+                        } while (--op > whave);
+                        if (op == 0) {
+                            from = out - dist;
+                            do {
+                                *out++ = *from++;
+                            } while (--len);
+                            continue;
+                        }
+#endif
+                    }
+                    from = window;
+                    if (wnext == 0) {           /* very common case */
+                        from += wsize - op;
+                        if (op < len) {         /* some from window */
+                            len -= op;
+                            do {
+                                *out++ = *from++;
+                            } while (--op);
+                            from = out - dist;  /* rest from output */
+                        }
+                    }
+                    else if (wnext < op) {      /* wrap around window */
+                        from += wsize + wnext - op;
+                        op -= wnext;
+                        if (op < len) {         /* some from end of window */
+                            len -= op;
+                            do {
+                                *out++ = *from++;
+                            } while (--op);
+                            from = window;
+                            if (wnext < len) {  /* some from start of window */
+                                op = wnext;
+                                len -= op;
+                                do {
+                                    *out++ = *from++;
+                                } while (--op);
+                                from = out - dist;      /* rest from output */
+                            }
+                        }
+                    }
+                    else {                      /* contiguous in window */
+                        from += wnext - op;
+                        if (op < len) {         /* some from window */
+                            len -= op;
+                            do {
+                                *out++ = *from++;
+                            } while (--op);
+                            from = out - dist;  /* rest from output */
+                        }
+                    }
+                    while (len > 2) {
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        len -= 3;
+                    }
+                    if (len) {
+                        *out++ = *from++;
+                        if (len > 1)
+                            *out++ = *from++;
+                    }
+                }
+                else {
+                    from = out - dist;          /* copy direct from output */
+                    do {                        /* minimum length is three */
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        len -= 3;
+                    } while (len > 2);
+                    if (len) {
+                        *out++ = *from++;
+                        if (len > 1)
+                            *out++ = *from++;
+                    }
+                }
+            }
+            else if ((op & 64) == 0) {          /* 2nd level distance code */
+                here = dcode + here->val + (hold & ((1U << op) - 1));
+                goto dodist;
+            }
+            else {
+                strm->msg = (char *)"invalid distance code";
+                state->mode = BAD;
+                break;
+            }
+        }
+        else if ((op & 64) == 0) {              /* 2nd level length code */
+            here = lcode + here->val + (hold & ((1U << op) - 1));
+            goto dolen;
+        }
+        else if (op & 32) {                     /* end-of-block */
+            Tracevv((stderr, "inflate:         end of block\n"));
+            state->mode = TYPE;
+            break;
+        }
+        else {
+            strm->msg = (char *)"invalid literal/length code";
+            state->mode = BAD;
+            break;
+        }
+    } while (in < last && out < end);
+
+    /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+    len = bits >> 3;
+    in -= len;
+    bits -= len << 3;
+    hold &= (1U << bits) - 1;
+
+    /* update state and return */
+    strm->next_in = in;
+    strm->next_out = out;
+    strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
+    strm->avail_out = (unsigned)(out < end ?
+                                 257 + (end - out) : 257 - (out - end));
+    state->hold = hold;
+    state->bits = bits;
+    return;
+}
+
+/*
+   inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
+   - Using bit fields for code structure
+   - Different op definition to avoid & for extra bits (do & for table bits)
+   - Three separate decoding do-loops for direct, window, and wnext == 0
+   - Special case for distance > 1 copies to do overlapped load and store copy
+   - Explicit branch predictions (based on measured branch probabilities)
+   - Deferring match copy and interspersed it with decoding subsequent codes
+   - Swapping literal/length else
+   - Swapping window/direct else
+   - Larger unrolled copy loops (three is about right)
+   - Moving len -= 3 statement into middle of loop
+ */
+
+#endif /* !ASMINF */
diff --git a/lib/zlib/inffast.h b/lib/zlib/inffast.h
new file mode 100644
index 0000000..e5c1aa4
--- /dev/null
+++ b/lib/zlib/inffast.h
@@ -0,0 +1,11 @@
+/* inffast.h -- header to use inffast.c
+ * Copyright (C) 1995-2003, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));
diff --git a/lib/zlib/inffixed.h b/lib/zlib/inffixed.h
new file mode 100644
index 0000000..d628327
--- /dev/null
+++ b/lib/zlib/inffixed.h
@@ -0,0 +1,94 @@
+    /* inffixed.h -- table for decoding fixed codes
+     * Generated automatically by makefixed().
+     */
+
+    /* WARNING: this file should *not* be used by applications.
+       It is part of the implementation of this library and is
+       subject to change. Applications should only use zlib.h.
+     */
+
+    static const code lenfix[512] = {
+        {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
+        {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
+        {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
+        {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
+        {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
+        {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
+        {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
+        {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
+        {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
+        {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
+        {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
+        {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
+        {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
+        {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
+        {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
+        {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
+        {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
+        {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
+        {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
+        {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
+        {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
+        {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
+        {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
+        {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
+        {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
+        {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
+        {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
+        {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
+        {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
+        {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
+        {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
+        {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
+        {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
+        {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
+        {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
+        {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
+        {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
+        {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
+        {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
+        {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
+        {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
+        {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
+        {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
+        {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
+        {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
+        {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
+        {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
+        {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
+        {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
+        {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
+        {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
+        {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
+        {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
+        {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
+        {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
+        {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
+        {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
+        {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
+        {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
+        {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
+        {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
+        {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
+        {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
+        {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
+        {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
+        {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
+        {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
+        {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
+        {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
+        {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
+        {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
+        {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
+        {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
+        {0,9,255}
+    };
+
+    static const code distfix[32] = {
+        {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
+        {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
+        {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
+        {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
+        {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
+        {22,5,193},{64,5,0}
+    };
diff --git a/lib/zlib/inflate.c b/lib/zlib/inflate.c
new file mode 100644
index 0000000..49934c9
--- /dev/null
+++ b/lib/zlib/inflate.c
@@ -0,0 +1,1594 @@
+/* inflate.c -- zlib decompression
+ * Copyright (C) 1995-2022 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/*
+ * Change history:
+ *
+ * 1.2.beta0    24 Nov 2002
+ * - First version -- complete rewrite of inflate to simplify code, avoid
+ *   creation of window when not needed, minimize use of window when it is
+ *   needed, make inffast.c even faster, implement gzip decoding, and to
+ *   improve code readability and style over the previous zlib inflate code
+ *
+ * 1.2.beta1    25 Nov 2002
+ * - Use pointers for available input and output checking in inffast.c
+ * - Remove input and output counters in inffast.c
+ * - Change inffast.c entry and loop from avail_in >= 7 to >= 6
+ * - Remove unnecessary second byte pull from length extra in inffast.c
+ * - Unroll direct copy to three copies per loop in inffast.c
+ *
+ * 1.2.beta2    4 Dec 2002
+ * - Change external routine names to reduce potential conflicts
+ * - Correct filename to inffixed.h for fixed tables in inflate.c
+ * - Make hbuf[] unsigned char to match parameter type in inflate.c
+ * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)
+ *   to avoid negation problem on Alphas (64 bit) in inflate.c
+ *
+ * 1.2.beta3    22 Dec 2002
+ * - Add comments on state->bits assertion in inffast.c
+ * - Add comments on op field in inftrees.h
+ * - Fix bug in reuse of allocated window after inflateReset()
+ * - Remove bit fields--back to byte structure for speed
+ * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths
+ * - Change post-increments to pre-increments in inflate_fast(), PPC biased?
+ * - Add compile time option, POSTINC, to use post-increments instead (Intel?)
+ * - Make MATCH copy in inflate() much faster for when inflate_fast() not used
+ * - Use local copies of stream next and avail values, as well as local bit
+ *   buffer and bit count in inflate()--for speed when inflate_fast() not used
+ *
+ * 1.2.beta4    1 Jan 2003
+ * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings
+ * - Move a comment on output buffer sizes from inffast.c to inflate.c
+ * - Add comments in inffast.c to introduce the inflate_fast() routine
+ * - Rearrange window copies in inflate_fast() for speed and simplification
+ * - Unroll last copy for window match in inflate_fast()
+ * - Use local copies of window variables in inflate_fast() for speed
+ * - Pull out common wnext == 0 case for speed in inflate_fast()
+ * - Make op and len in inflate_fast() unsigned for consistency
+ * - Add FAR to lcode and dcode declarations in inflate_fast()
+ * - Simplified bad distance check in inflate_fast()
+ * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new
+ *   source file infback.c to provide a call-back interface to inflate for
+ *   programs like gzip and unzip -- uses window as output buffer to avoid
+ *   window copying
+ *
+ * 1.2.beta5    1 Jan 2003
+ * - Improved inflateBack() interface to allow the caller to provide initial
+ *   input in strm.
+ * - Fixed stored blocks bug in inflateBack()
+ *
+ * 1.2.beta6    4 Jan 2003
+ * - Added comments in inffast.c on effectiveness of POSTINC
+ * - Typecasting all around to reduce compiler warnings
+ * - Changed loops from while (1) or do {} while (1) to for (;;), again to
+ *   make compilers happy
+ * - Changed type of window in inflateBackInit() to unsigned char *
+ *
+ * 1.2.beta7    27 Jan 2003
+ * - Changed many types to unsigned or unsigned short to avoid warnings
+ * - Added inflateCopy() function
+ *
+ * 1.2.0        9 Mar 2003
+ * - Changed inflateBack() interface to provide separate opaque descriptors
+ *   for the in() and out() functions
+ * - Changed inflateBack() argument and in_func typedef to swap the length
+ *   and buffer address return values for the input function
+ * - Check next_in and next_out for Z_NULL on entry to inflate()
+ *
+ * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+
+#ifdef MAKEFIXED
+#  ifndef BUILDFIXED
+#    define BUILDFIXED
+#  endif
+#endif
+
+/* function prototypes */
+local int inflateStateCheck OF((z_streamp strm));
+local void fixedtables OF((struct inflate_state FAR *state));
+local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
+                           unsigned copy));
+#ifdef BUILDFIXED
+   void makefixed OF((void));
+#endif
+local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
+                              unsigned len));
+
+local int inflateStateCheck(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+    if (strm == Z_NULL ||
+        strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
+        return 1;
+    state = (struct inflate_state FAR *)strm->state;
+    if (state == Z_NULL || state->strm != strm ||
+        state->mode < HEAD || state->mode > SYNC)
+        return 1;
+    return 0;
+}
+
+int ZEXPORT inflateResetKeep(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    strm->total_in = strm->total_out = state->total = 0;
+    strm->msg = Z_NULL;
+    if (state->wrap)        /* to support ill-conceived Java test suite */
+        strm->adler = state->wrap & 1;
+    state->mode = HEAD;
+    state->last = 0;
+    state->havedict = 0;
+    state->flags = -1;
+    state->dmax = 32768U;
+    state->head = Z_NULL;
+    state->hold = 0;
+    state->bits = 0;
+    state->lencode = state->distcode = state->next = state->codes;
+    state->sane = 1;
+    state->back = -1;
+    Tracev((stderr, "inflate: reset\n"));
+    return Z_OK;
+}
+
+int ZEXPORT inflateReset(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    state->wsize = 0;
+    state->whave = 0;
+    state->wnext = 0;
+    return inflateResetKeep(strm);
+}
+
+int ZEXPORT inflateReset2(strm, windowBits)
+z_streamp strm;
+int windowBits;
+{
+    int wrap;
+    struct inflate_state FAR *state;
+
+    /* get the state */
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* extract wrap request from windowBits parameter */
+    if (windowBits < 0) {
+        if (windowBits < -15)
+            return Z_STREAM_ERROR;
+        wrap = 0;
+        windowBits = -windowBits;
+    }
+    else {
+        wrap = (windowBits >> 4) + 5;
+#ifdef GUNZIP
+        if (windowBits < 48)
+            windowBits &= 15;
+#endif
+    }
+
+    /* set number of window bits, free window if different */
+    if (windowBits && (windowBits < 8 || windowBits > 15))
+        return Z_STREAM_ERROR;
+    if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) {
+        ZFREE(strm, state->window);
+        state->window = Z_NULL;
+    }
+
+    /* update state and reset the rest of it */
+    state->wrap = wrap;
+    state->wbits = (unsigned)windowBits;
+    return inflateReset(strm);
+}
+
+int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
+z_streamp strm;
+int windowBits;
+const char *version;
+int stream_size;
+{
+    int ret;
+    struct inflate_state FAR *state;
+
+    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
+        stream_size != (int)(sizeof(z_stream)))
+        return Z_VERSION_ERROR;
+    if (strm == Z_NULL) return Z_STREAM_ERROR;
+    strm->msg = Z_NULL;                 /* in case we return an error */
+    if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zalloc = zcalloc;
+        strm->opaque = (voidpf)0;
+#endif
+    }
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zfree = zcfree;
+#endif
+    state = (struct inflate_state FAR *)
+            ZALLOC(strm, 1, sizeof(struct inflate_state));
+    if (state == Z_NULL) return Z_MEM_ERROR;
+    Tracev((stderr, "inflate: allocated\n"));
+    strm->state = (struct internal_state FAR *)state;
+    state->strm = strm;
+    state->window = Z_NULL;
+    state->mode = HEAD;     /* to pass state test in inflateReset2() */
+    ret = inflateReset2(strm, windowBits);
+    if (ret != Z_OK) {
+        ZFREE(strm, state);
+        strm->state = Z_NULL;
+    }
+    return ret;
+}
+
+int ZEXPORT inflateInit_(strm, version, stream_size)
+z_streamp strm;
+const char *version;
+int stream_size;
+{
+    return inflateInit2_(strm, DEF_WBITS, version, stream_size);
+}
+
+int ZEXPORT inflatePrime(strm, bits, value)
+z_streamp strm;
+int bits;
+int value;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    if (bits < 0) {
+        state->hold = 0;
+        state->bits = 0;
+        return Z_OK;
+    }
+    if (bits > 16 || state->bits + (uInt)bits > 32) return Z_STREAM_ERROR;
+    value &= (1L << bits) - 1;
+    state->hold += (unsigned)value << state->bits;
+    state->bits += (uInt)bits;
+    return Z_OK;
+}
+
+/*
+   Return state with length and distance decoding tables and index sizes set to
+   fixed code decoding.  Normally this returns fixed tables from inffixed.h.
+   If BUILDFIXED is defined, then instead this routine builds the tables the
+   first time it's called, and returns those tables the first time and
+   thereafter.  This reduces the size of the code by about 2K bytes, in
+   exchange for a little execution time.  However, BUILDFIXED should not be
+   used for threaded applications, since the rewriting of the tables and virgin
+   may not be thread-safe.
+ */
+local void fixedtables(state)
+struct inflate_state FAR *state;
+{
+#ifdef BUILDFIXED
+    static int virgin = 1;
+    static code *lenfix, *distfix;
+    static code fixed[544];
+
+    /* build fixed huffman tables if first call (may not be thread safe) */
+    if (virgin) {
+        unsigned sym, bits;
+        static code *next;
+
+        /* literal/length table */
+        sym = 0;
+        while (sym < 144) state->lens[sym++] = 8;
+        while (sym < 256) state->lens[sym++] = 9;
+        while (sym < 280) state->lens[sym++] = 7;
+        while (sym < 288) state->lens[sym++] = 8;
+        next = fixed;
+        lenfix = next;
+        bits = 9;
+        inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
+
+        /* distance table */
+        sym = 0;
+        while (sym < 32) state->lens[sym++] = 5;
+        distfix = next;
+        bits = 5;
+        inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
+
+        /* do this just once */
+        virgin = 0;
+    }
+#else /* !BUILDFIXED */
+#   include "inffixed.h"
+#endif /* BUILDFIXED */
+    state->lencode = lenfix;
+    state->lenbits = 9;
+    state->distcode = distfix;
+    state->distbits = 5;
+}
+
+#ifdef MAKEFIXED
+#include <stdio.h>
+
+/*
+   Write out the inffixed.h that is #include'd above.  Defining MAKEFIXED also
+   defines BUILDFIXED, so the tables are built on the fly.  makefixed() writes
+   those tables to stdout, which would be piped to inffixed.h.  A small program
+   can simply call makefixed to do this:
+
+    void makefixed(void);
+
+    int main(void)
+    {
+        makefixed();
+        return 0;
+    }
+
+   Then that can be linked with zlib built with MAKEFIXED defined and run:
+
+    a.out > inffixed.h
+ */
+void makefixed()
+{
+    unsigned low, size;
+    struct inflate_state state;
+
+    fixedtables(&state);
+    puts("    /* inffixed.h -- table for decoding fixed codes");
+    puts("     * Generated automatically by makefixed().");
+    puts("     */");
+    puts("");
+    puts("    /* WARNING: this file should *not* be used by applications.");
+    puts("       It is part of the implementation of this library and is");
+    puts("       subject to change. Applications should only use zlib.h.");
+    puts("     */");
+    puts("");
+    size = 1U << 9;
+    printf("    static const code lenfix[%u] = {", size);
+    low = 0;
+    for (;;) {
+        if ((low % 7) == 0) printf("\n        ");
+        printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
+               state.lencode[low].bits, state.lencode[low].val);
+        if (++low == size) break;
+        putchar(',');
+    }
+    puts("\n    };");
+    size = 1U << 5;
+    printf("\n    static const code distfix[%u] = {", size);
+    low = 0;
+    for (;;) {
+        if ((low % 6) == 0) printf("\n        ");
+        printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,
+               state.distcode[low].val);
+        if (++low == size) break;
+        putchar(',');
+    }
+    puts("\n    };");
+}
+#endif /* MAKEFIXED */
+
+/*
+   Update the window with the last wsize (normally 32K) bytes written before
+   returning.  If window does not exist yet, create it.  This is only called
+   when a window is already in use, or when output has been written during this
+   inflate call, but the end of the deflate stream has not been reached yet.
+   It is also called to create a window for dictionary data when a dictionary
+   is loaded.
+
+   Providing output buffers larger than 32K to inflate() should provide a speed
+   advantage, since only the last 32K of output is copied to the sliding window
+   upon return from inflate(), and since all distances after the first 32K of
+   output will fall in the output data, making match copies simpler and faster.
+   The advantage may be dependent on the size of the processor's data caches.
+ */
+local int updatewindow(strm, end, copy)
+z_streamp strm;
+const Bytef *end;
+unsigned copy;
+{
+    struct inflate_state FAR *state;
+    unsigned dist;
+
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* if it hasn't been done already, allocate space for the window */
+    if (state->window == Z_NULL) {
+        state->window = (unsigned char FAR *)
+                        ZALLOC(strm, 1U << state->wbits,
+                               sizeof(unsigned char));
+        if (state->window == Z_NULL) return 1;
+    }
+
+    /* if window not in use yet, initialize */
+    if (state->wsize == 0) {
+        state->wsize = 1U << state->wbits;
+        state->wnext = 0;
+        state->whave = 0;
+    }
+
+    /* copy state->wsize or less output bytes into the circular window */
+    if (copy >= state->wsize) {
+        zmemcpy(state->window, end - state->wsize, state->wsize);
+        state->wnext = 0;
+        state->whave = state->wsize;
+    }
+    else {
+        dist = state->wsize - state->wnext;
+        if (dist > copy) dist = copy;
+        zmemcpy(state->window + state->wnext, end - copy, dist);
+        copy -= dist;
+        if (copy) {
+            zmemcpy(state->window, end - copy, copy);
+            state->wnext = copy;
+            state->whave = state->wsize;
+        }
+        else {
+            state->wnext += dist;
+            if (state->wnext == state->wsize) state->wnext = 0;
+            if (state->whave < state->wsize) state->whave += dist;
+        }
+    }
+    return 0;
+}
+
+/* Macros for inflate(): */
+
+/* check function to use adler32() for zlib or crc32() for gzip */
+#ifdef GUNZIP
+#  define UPDATE_CHECK(check, buf, len) \
+    (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
+#else
+#  define UPDATE_CHECK(check, buf, len) adler32(check, buf, len)
+#endif
+
+/* check macros for header crc */
+#ifdef GUNZIP
+#  define CRC2(check, word) \
+    do { \
+        hbuf[0] = (unsigned char)(word); \
+        hbuf[1] = (unsigned char)((word) >> 8); \
+        check = crc32(check, hbuf, 2); \
+    } while (0)
+
+#  define CRC4(check, word) \
+    do { \
+        hbuf[0] = (unsigned char)(word); \
+        hbuf[1] = (unsigned char)((word) >> 8); \
+        hbuf[2] = (unsigned char)((word) >> 16); \
+        hbuf[3] = (unsigned char)((word) >> 24); \
+        check = crc32(check, hbuf, 4); \
+    } while (0)
+#endif
+
+/* Load registers with state in inflate() for speed */
+#define LOAD() \
+    do { \
+        put = strm->next_out; \
+        left = strm->avail_out; \
+        next = strm->next_in; \
+        have = strm->avail_in; \
+        hold = state->hold; \
+        bits = state->bits; \
+    } while (0)
+
+/* Restore state from registers in inflate() */
+#define RESTORE() \
+    do { \
+        strm->next_out = put; \
+        strm->avail_out = left; \
+        strm->next_in = next; \
+        strm->avail_in = have; \
+        state->hold = hold; \
+        state->bits = bits; \
+    } while (0)
+
+/* Clear the input bit accumulator */
+#define INITBITS() \
+    do { \
+        hold = 0; \
+        bits = 0; \
+    } while (0)
+
+/* Get a byte of input into the bit accumulator, or return from inflate()
+   if there is no input available. */
+#define PULLBYTE() \
+    do { \
+        if (have == 0) goto inf_leave; \
+        have--; \
+        hold += (unsigned long)(*next++) << bits; \
+        bits += 8; \
+    } while (0)
+
+/* Assure that there are at least n bits in the bit accumulator.  If there is
+   not enough available input to do that, then return from inflate(). */
+#define NEEDBITS(n) \
+    do { \
+        while (bits < (unsigned)(n)) \
+            PULLBYTE(); \
+    } while (0)
+
+/* Return the low n bits of the bit accumulator (n < 16) */
+#define BITS(n) \
+    ((unsigned)hold & ((1U << (n)) - 1))
+
+/* Remove n bits from the bit accumulator */
+#define DROPBITS(n) \
+    do { \
+        hold >>= (n); \
+        bits -= (unsigned)(n); \
+    } while (0)
+
+/* Remove zero to seven bits as needed to go to a byte boundary */
+#define BYTEBITS() \
+    do { \
+        hold >>= bits & 7; \
+        bits -= bits & 7; \
+    } while (0)
+
+/*
+   inflate() uses a state machine to process as much input data and generate as
+   much output data as possible before returning.  The state machine is
+   structured roughly as follows:
+
+    for (;;) switch (state) {
+    ...
+    case STATEn:
+        if (not enough input data or output space to make progress)
+            return;
+        ... make progress ...
+        state = STATEm;
+        break;
+    ...
+    }
+
+   so when inflate() is called again, the same case is attempted again, and
+   if the appropriate resources are provided, the machine proceeds to the
+   next state.  The NEEDBITS() macro is usually the way the state evaluates
+   whether it can proceed or should return.  NEEDBITS() does the return if
+   the requested bits are not available.  The typical use of the BITS macros
+   is:
+
+        NEEDBITS(n);
+        ... do something with BITS(n) ...
+        DROPBITS(n);
+
+   where NEEDBITS(n) either returns from inflate() if there isn't enough
+   input left to load n bits into the accumulator, or it continues.  BITS(n)
+   gives the low n bits in the accumulator.  When done, DROPBITS(n) drops
+   the low n bits off the accumulator.  INITBITS() clears the accumulator
+   and sets the number of available bits to zero.  BYTEBITS() discards just
+   enough bits to put the accumulator on a byte boundary.  After BYTEBITS()
+   and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.
+
+   NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
+   if there is no input available.  The decoding of variable length codes uses
+   PULLBYTE() directly in order to pull just enough bytes to decode the next
+   code, and no more.
+
+   Some states loop until they get enough input, making sure that enough
+   state information is maintained to continue the loop where it left off
+   if NEEDBITS() returns in the loop.  For example, want, need, and keep
+   would all have to actually be part of the saved state in case NEEDBITS()
+   returns:
+
+    case STATEw:
+        while (want < need) {
+            NEEDBITS(n);
+            keep[want++] = BITS(n);
+            DROPBITS(n);
+        }
+        state = STATEx;
+    case STATEx:
+
+   As shown above, if the next state is also the next case, then the break
+   is omitted.
+
+   A state may also return if there is not enough output space available to
+   complete that state.  Those states are copying stored data, writing a
+   literal byte, and copying a matching string.
+
+   When returning, a "goto inf_leave" is used to update the total counters,
+   update the check value, and determine whether any progress has been made
+   during that inflate() call in order to return the proper return code.
+   Progress is defined as a change in either strm->avail_in or strm->avail_out.
+   When there is a window, goto inf_leave will update the window with the last
+   output written.  If a goto inf_leave occurs in the middle of decompression
+   and there is no window currently, goto inf_leave will create one and copy
+   output to the window for the next call of inflate().
+
+   In this implementation, the flush parameter of inflate() only affects the
+   return code (per zlib.h).  inflate() always writes as much as possible to
+   strm->next_out, given the space available and the provided input--the effect
+   documented in zlib.h of Z_SYNC_FLUSH.  Furthermore, inflate() always defers
+   the allocation of and copying into a sliding window until necessary, which
+   provides the effect documented in zlib.h for Z_FINISH when the entire input
+   stream available.  So the only thing the flush parameter actually does is:
+   when flush is set to Z_FINISH, inflate() cannot return Z_OK.  Instead it
+   will return Z_BUF_ERROR if it has not reached the end of the stream.
+ */
+
+int ZEXPORT inflate(strm, flush)
+z_streamp strm;
+int flush;
+{
+    struct inflate_state FAR *state;
+    z_const unsigned char FAR *next;    /* next input */
+    unsigned char FAR *put;     /* next output */
+    unsigned have, left;        /* available input and output */
+    unsigned long hold;         /* bit buffer */
+    unsigned bits;              /* bits in bit buffer */
+    unsigned in, out;           /* save starting available input and output */
+    unsigned copy;              /* number of stored or match bytes to copy */
+    unsigned char FAR *from;    /* where to copy match bytes from */
+    code here;                  /* current decoding table entry */
+    code last;                  /* parent table entry */
+    unsigned len;               /* length to copy for repeats, bits to drop */
+    int ret;                    /* return code */
+#ifdef GUNZIP
+    unsigned char hbuf[4];      /* buffer for gzip header crc calculation */
+#endif
+    static const unsigned short order[19] = /* permutation of code lengths */
+        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+    if (inflateStateCheck(strm) || strm->next_out == Z_NULL ||
+        (strm->next_in == Z_NULL && strm->avail_in != 0))
+        return Z_STREAM_ERROR;
+
+    state = (struct inflate_state FAR *)strm->state;
+    if (state->mode == TYPE) state->mode = TYPEDO;      /* skip check */
+    LOAD();
+    in = have;
+    out = left;
+    ret = Z_OK;
+    for (;;)
+        switch (state->mode) {
+        case HEAD:
+            if (state->wrap == 0) {
+                state->mode = TYPEDO;
+                break;
+            }
+            NEEDBITS(16);
+#ifdef GUNZIP
+            if ((state->wrap & 2) && hold == 0x8b1f) {  /* gzip header */
+                if (state->wbits == 0)
+                    state->wbits = 15;
+                state->check = crc32(0L, Z_NULL, 0);
+                CRC2(state->check, hold);
+                INITBITS();
+                state->mode = FLAGS;
+                break;
+            }
+            if (state->head != Z_NULL)
+                state->head->done = -1;
+            if (!(state->wrap & 1) ||   /* check if zlib header allowed */
+#else
+            if (
+#endif
+                ((BITS(8) << 8) + (hold >> 8)) % 31) {
+                strm->msg = (char *)"incorrect header check";
+                state->mode = BAD;
+                break;
+            }
+            if (BITS(4) != Z_DEFLATED) {
+                strm->msg = (char *)"unknown compression method";
+                state->mode = BAD;
+                break;
+            }
+            DROPBITS(4);
+            len = BITS(4) + 8;
+            if (state->wbits == 0)
+                state->wbits = len;
+            if (len > 15 || len > state->wbits) {
+                strm->msg = (char *)"invalid window size";
+                state->mode = BAD;
+                break;
+            }
+            state->dmax = 1U << len;
+            state->flags = 0;               /* indicate zlib header */
+            Tracev((stderr, "inflate:   zlib header ok\n"));
+            strm->adler = state->check = adler32(0L, Z_NULL, 0);
+            state->mode = hold & 0x200 ? DICTID : TYPE;
+            INITBITS();
+            break;
+#ifdef GUNZIP
+        case FLAGS:
+            NEEDBITS(16);
+            state->flags = (int)(hold);
+            if ((state->flags & 0xff) != Z_DEFLATED) {
+                strm->msg = (char *)"unknown compression method";
+                state->mode = BAD;
+                break;
+            }
+            if (state->flags & 0xe000) {
+                strm->msg = (char *)"unknown header flags set";
+                state->mode = BAD;
+                break;
+            }
+            if (state->head != Z_NULL)
+                state->head->text = (int)((hold >> 8) & 1);
+            if ((state->flags & 0x0200) && (state->wrap & 4))
+                CRC2(state->check, hold);
+            INITBITS();
+            state->mode = TIME;
+            ZFALLTHROUGH;
+        case TIME:
+            NEEDBITS(32);
+            if (state->head != Z_NULL)
+                state->head->time = hold;
+            if ((state->flags & 0x0200) && (state->wrap & 4))
+                CRC4(state->check, hold);
+            INITBITS();
+            state->mode = OS;
+            ZFALLTHROUGH;
+        case OS:
+            NEEDBITS(16);
+            if (state->head != Z_NULL) {
+                state->head->xflags = (int)(hold & 0xff);
+                state->head->os = (int)(hold >> 8);
+            }
+            if ((state->flags & 0x0200) && (state->wrap & 4))
+                CRC2(state->check, hold);
+            INITBITS();
+            state->mode = EXLEN;
+            ZFALLTHROUGH;
+        case EXLEN:
+            if (state->flags & 0x0400) {
+                NEEDBITS(16);
+                state->length = (unsigned)(hold);
+                if (state->head != Z_NULL)
+                    state->head->extra_len = (unsigned)hold;
+                if ((state->flags & 0x0200) && (state->wrap & 4))
+                    CRC2(state->check, hold);
+                INITBITS();
+            }
+            else if (state->head != Z_NULL)
+                state->head->extra = Z_NULL;
+            state->mode = EXTRA;
+            ZFALLTHROUGH;
+        case EXTRA:
+            if (state->flags & 0x0400) {
+                copy = state->length;
+                if (copy > have) copy = have;
+                if (copy) {
+                    if (state->head != Z_NULL &&
+                        state->head->extra != Z_NULL &&
+                        (len = state->head->extra_len - state->length) <
+                            state->head->extra_max) {
+                        zmemcpy(state->head->extra + len, next,
+                                len + copy > state->head->extra_max ?
+                                state->head->extra_max - len : copy);
+                    }
+                    if ((state->flags & 0x0200) && (state->wrap & 4))
+                        state->check = crc32(state->check, next, copy);
+                    have -= copy;
+                    next += copy;
+                    state->length -= copy;
+                }
+                if (state->length) goto inf_leave;
+            }
+            state->length = 0;
+            state->mode = NAME;
+            ZFALLTHROUGH;
+        case NAME:
+            if (state->flags & 0x0800) {
+                if (have == 0) goto inf_leave;
+                copy = 0;
+                do {
+                    len = (unsigned)(next[copy++]);
+                    if (state->head != Z_NULL &&
+                            state->head->name != Z_NULL &&
+                            state->length < state->head->name_max)
+                        state->head->name[state->length++] = (Bytef)len;
+                } while (len && copy < have);
+                if ((state->flags & 0x0200) && (state->wrap & 4))
+                    state->check = crc32(state->check, next, copy);
+                have -= copy;
+                next += copy;
+                if (len) goto inf_leave;
+            }
+            else if (state->head != Z_NULL)
+                state->head->name = Z_NULL;
+            state->length = 0;
+            state->mode = COMMENT;
+            ZFALLTHROUGH;
+        case COMMENT:
+            if (state->flags & 0x1000) {
+                if (have == 0) goto inf_leave;
+                copy = 0;
+                do {
+                    len = (unsigned)(next[copy++]);
+                    if (state->head != Z_NULL &&
+                            state->head->comment != Z_NULL &&
+                            state->length < state->head->comm_max)
+                        state->head->comment[state->length++] = (Bytef)len;
+                } while (len && copy < have);
+                if ((state->flags & 0x0200) && (state->wrap & 4))
+                    state->check = crc32(state->check, next, copy);
+                have -= copy;
+                next += copy;
+                if (len) goto inf_leave;
+            }
+            else if (state->head != Z_NULL)
+                state->head->comment = Z_NULL;
+            state->mode = HCRC;
+            ZFALLTHROUGH;
+        case HCRC:
+            if (state->flags & 0x0200) {
+                NEEDBITS(16);
+                if ((state->wrap & 4) && hold != (state->check & 0xffff)) {
+                    strm->msg = (char *)"header crc mismatch";
+                    state->mode = BAD;
+                    break;
+                }
+                INITBITS();
+            }
+            if (state->head != Z_NULL) {
+                state->head->hcrc = (int)((state->flags >> 9) & 1);
+                state->head->done = 1;
+            }
+            strm->adler = state->check = crc32(0L, Z_NULL, 0);
+            state->mode = TYPE;
+            break;
+#endif
+        case DICTID:
+            NEEDBITS(32);
+            strm->adler = state->check = ZSWAP32(hold);
+            INITBITS();
+            state->mode = DICT;
+            ZFALLTHROUGH;
+        case DICT:
+            if (state->havedict == 0) {
+                RESTORE();
+                return Z_NEED_DICT;
+            }
+            strm->adler = state->check = adler32(0L, Z_NULL, 0);
+            state->mode = TYPE;
+            ZFALLTHROUGH;
+        case TYPE:
+            if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;
+            ZFALLTHROUGH;
+        case TYPEDO:
+            if (state->last) {
+                BYTEBITS();
+                state->mode = CHECK;
+                break;
+            }
+            NEEDBITS(3);
+            state->last = BITS(1);
+            DROPBITS(1);
+            switch (BITS(2)) {
+            case 0:                             /* stored block */
+                Tracev((stderr, "inflate:     stored block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = STORED;
+                break;
+            case 1:                             /* fixed block */
+                fixedtables(state);
+                Tracev((stderr, "inflate:     fixed codes block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = LEN_;             /* decode codes */
+                if (flush == Z_TREES) {
+                    DROPBITS(2);
+                    goto inf_leave;
+                }
+                break;
+            case 2:                             /* dynamic block */
+                Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = TABLE;
+                break;
+            case 3:
+                strm->msg = (char *)"invalid block type";
+                state->mode = BAD;
+            }
+            DROPBITS(2);
+            break;
+        case STORED:
+            BYTEBITS();                         /* go to byte boundary */
+            NEEDBITS(32);
+            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
+                strm->msg = (char *)"invalid stored block lengths";
+                state->mode = BAD;
+                break;
+            }
+            state->length = (unsigned)hold & 0xffff;
+            Tracev((stderr, "inflate:       stored length %u\n",
+                    state->length));
+            INITBITS();
+            state->mode = COPY_;
+            if (flush == Z_TREES) goto inf_leave;
+            ZFALLTHROUGH;
+        case COPY_:
+            state->mode = COPY;
+            ZFALLTHROUGH;
+        case COPY:
+            copy = state->length;
+            if (copy) {
+                if (copy > have) copy = have;
+                if (copy > left) copy = left;
+                if (copy == 0) goto inf_leave;
+                zmemcpy(put, next, copy);
+                have -= copy;
+                next += copy;
+                left -= copy;
+                put += copy;
+                state->length -= copy;
+                break;
+            }
+            Tracev((stderr, "inflate:       stored end\n"));
+            state->mode = TYPE;
+            break;
+        case TABLE:
+            NEEDBITS(14);
+            state->nlen = BITS(5) + 257;
+            DROPBITS(5);
+            state->ndist = BITS(5) + 1;
+            DROPBITS(5);
+            state->ncode = BITS(4) + 4;
+            DROPBITS(4);
+#ifndef PKZIP_BUG_WORKAROUND
+            if (state->nlen > 286 || state->ndist > 30) {
+                strm->msg = (char *)"too many length or distance symbols";
+                state->mode = BAD;
+                break;
+            }
+#endif
+            Tracev((stderr, "inflate:       table sizes ok\n"));
+            state->have = 0;
+            state->mode = LENLENS;
+            ZFALLTHROUGH;
+        case LENLENS:
+            while (state->have < state->ncode) {
+                NEEDBITS(3);
+                state->lens[order[state->have++]] = (unsigned short)BITS(3);
+                DROPBITS(3);
+            }
+            while (state->have < 19)
+                state->lens[order[state->have++]] = 0;
+            state->next = state->codes;
+            state->lencode = (const code FAR *)(state->next);
+            state->lenbits = 7;
+            ret = inflate_table(CODES, state->lens, 19, &(state->next),
+                                &(state->lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid code lengths set";
+                state->mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       code lengths ok\n"));
+            state->have = 0;
+            state->mode = CODELENS;
+            ZFALLTHROUGH;
+        case CODELENS:
+            while (state->have < state->nlen + state->ndist) {
+                for (;;) {
+                    here = state->lencode[BITS(state->lenbits)];
+                    if ((unsigned)(here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                if (here.val < 16) {
+                    DROPBITS(here.bits);
+                    state->lens[state->have++] = here.val;
+                }
+                else {
+                    if (here.val == 16) {
+                        NEEDBITS(here.bits + 2);
+                        DROPBITS(here.bits);
+                        if (state->have == 0) {
+                            strm->msg = (char *)"invalid bit length repeat";
+                            state->mode = BAD;
+                            break;
+                        }
+                        len = state->lens[state->have - 1];
+                        copy = 3 + BITS(2);
+                        DROPBITS(2);
+                    }
+                    else if (here.val == 17) {
+                        NEEDBITS(here.bits + 3);
+                        DROPBITS(here.bits);
+                        len = 0;
+                        copy = 3 + BITS(3);
+                        DROPBITS(3);
+                    }
+                    else {
+                        NEEDBITS(here.bits + 7);
+                        DROPBITS(here.bits);
+                        len = 0;
+                        copy = 11 + BITS(7);
+                        DROPBITS(7);
+                    }
+                    if (state->have + copy > state->nlen + state->ndist) {
+                        strm->msg = (char *)"invalid bit length repeat";
+                        state->mode = BAD;
+                        break;
+                    }
+                    while (copy--)
+                        state->lens[state->have++] = (unsigned short)len;
+                }
+            }
+
+            /* handle error breaks in while */
+            if (state->mode == BAD) break;
+
+            /* check for end-of-block code (better have one) */
+            if (state->lens[256] == 0) {
+                strm->msg = (char *)"invalid code -- missing end-of-block";
+                state->mode = BAD;
+                break;
+            }
+
+            /* build code tables -- note: do not change the lenbits or distbits
+               values here (9 and 6) without reading the comments in inftrees.h
+               concerning the ENOUGH constants, which depend on those values */
+            state->next = state->codes;
+            state->lencode = (const code FAR *)(state->next);
+            state->lenbits = 9;
+            ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
+                                &(state->lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid literal/lengths set";
+                state->mode = BAD;
+                break;
+            }
+            state->distcode = (const code FAR *)(state->next);
+            state->distbits = 6;
+            ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
+                            &(state->next), &(state->distbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid distances set";
+                state->mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       codes ok\n"));
+            state->mode = LEN_;
+            if (flush == Z_TREES) goto inf_leave;
+            ZFALLTHROUGH;
+        case LEN_:
+            state->mode = LEN;
+            ZFALLTHROUGH;
+        case LEN:
+            if (have >= 6 && left >= 258) {
+                RESTORE();
+                inflate_fast(strm, out);
+                LOAD();
+                if (state->mode == TYPE)
+                    state->back = -1;
+                break;
+            }
+            state->back = 0;
+            for (;;) {
+                here = state->lencode[BITS(state->lenbits)];
+                if ((unsigned)(here.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if (here.op && (here.op & 0xf0) == 0) {
+                last = here;
+                for (;;) {
+                    here = state->lencode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+                state->back += last.bits;
+            }
+            DROPBITS(here.bits);
+            state->back += here.bits;
+            state->length = (unsigned)here.val;
+            if ((int)(here.op) == 0) {
+                Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+                        "inflate:         literal '%c'\n" :
+                        "inflate:         literal 0x%02x\n", here.val));
+                state->mode = LIT;
+                break;
+            }
+            if (here.op & 32) {
+                Tracevv((stderr, "inflate:         end of block\n"));
+                state->back = -1;
+                state->mode = TYPE;
+                break;
+            }
+            if (here.op & 64) {
+                strm->msg = (char *)"invalid literal/length code";
+                state->mode = BAD;
+                break;
+            }
+            state->extra = (unsigned)(here.op) & 15;
+            state->mode = LENEXT;
+            ZFALLTHROUGH;
+        case LENEXT:
+            if (state->extra) {
+                NEEDBITS(state->extra);
+                state->length += BITS(state->extra);
+                DROPBITS(state->extra);
+                state->back += state->extra;
+            }
+            Tracevv((stderr, "inflate:         length %u\n", state->length));
+            state->was = state->length;
+            state->mode = DIST;
+            ZFALLTHROUGH;
+        case DIST:
+            for (;;) {
+                here = state->distcode[BITS(state->distbits)];
+                if ((unsigned)(here.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if ((here.op & 0xf0) == 0) {
+                last = here;
+                for (;;) {
+                    here = state->distcode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+                state->back += last.bits;
+            }
+            DROPBITS(here.bits);
+            state->back += here.bits;
+            if (here.op & 64) {
+                strm->msg = (char *)"invalid distance code";
+                state->mode = BAD;
+                break;
+            }
+            state->offset = (unsigned)here.val;
+            state->extra = (unsigned)(here.op) & 15;
+            state->mode = DISTEXT;
+            ZFALLTHROUGH;
+        case DISTEXT:
+            if (state->extra) {
+                NEEDBITS(state->extra);
+                state->offset += BITS(state->extra);
+                DROPBITS(state->extra);
+                state->back += state->extra;
+            }
+#ifdef INFLATE_STRICT
+            if (state->offset > state->dmax) {
+                strm->msg = (char *)"invalid distance too far back";
+                state->mode = BAD;
+                break;
+            }
+#endif
+            Tracevv((stderr, "inflate:         distance %u\n", state->offset));
+            state->mode = MATCH;
+            ZFALLTHROUGH;
+        case MATCH:
+            if (left == 0) goto inf_leave;
+            copy = out - left;
+            if (state->offset > copy) {         /* copy from window */
+                copy = state->offset - copy;
+                if (copy > state->whave) {
+                    if (state->sane) {
+                        strm->msg = (char *)"invalid distance too far back";
+                        state->mode = BAD;
+                        break;
+                    }
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+                    Trace((stderr, "inflate.c too far\n"));
+                    copy -= state->whave;
+                    if (copy > state->length) copy = state->length;
+                    if (copy > left) copy = left;
+                    left -= copy;
+                    state->length -= copy;
+                    do {
+                        *put++ = 0;
+                    } while (--copy);
+                    if (state->length == 0) state->mode = LEN;
+                    break;
+#endif
+                }
+                if (copy > state->wnext) {
+                    copy -= state->wnext;
+                    from = state->window + (state->wsize - copy);
+                }
+                else
+                    from = state->window + (state->wnext - copy);
+                if (copy > state->length) copy = state->length;
+            }
+            else {                              /* copy from output */
+                from = put - state->offset;
+                copy = state->length;
+            }
+            if (copy > left) copy = left;
+            left -= copy;
+            state->length -= copy;
+            do {
+                *put++ = *from++;
+            } while (--copy);
+            if (state->length == 0) state->mode = LEN;
+            break;
+        case LIT:
+            if (left == 0) goto inf_leave;
+            *put++ = (unsigned char)(state->length);
+            left--;
+            state->mode = LEN;
+            break;
+        case CHECK:
+            if (state->wrap) {
+                NEEDBITS(32);
+                out -= left;
+                strm->total_out += out;
+                state->total += out;
+                if ((state->wrap & 4) && out)
+                    strm->adler = state->check =
+                        UPDATE_CHECK(state->check, put - out, out);
+                out = left;
+                if ((state->wrap & 4) && (
+#ifdef GUNZIP
+                     state->flags ? hold :
+#endif
+                     ZSWAP32(hold)) != state->check) {
+                    strm->msg = (char *)"incorrect data check";
+                    state->mode = BAD;
+                    break;
+                }
+                INITBITS();
+                Tracev((stderr, "inflate:   check matches trailer\n"));
+            }
+#ifdef GUNZIP
+            state->mode = LENGTH;
+            ZFALLTHROUGH;
+        case LENGTH:
+            if (state->wrap && state->flags) {
+                NEEDBITS(32);
+                if ((state->wrap & 4) && hold != (state->total & 0xffffffff)) {
+                    strm->msg = (char *)"incorrect length check";
+                    state->mode = BAD;
+                    break;
+                }
+                INITBITS();
+                Tracev((stderr, "inflate:   length matches trailer\n"));
+            }
+#endif
+            state->mode = DONE;
+            ZFALLTHROUGH;
+        case DONE:
+            ret = Z_STREAM_END;
+            goto inf_leave;
+        case BAD:
+            ret = Z_DATA_ERROR;
+            goto inf_leave;
+        case MEM:
+            return Z_MEM_ERROR;
+        case SYNC:
+        default:
+            return Z_STREAM_ERROR;
+        }
+
+    /*
+       Return from inflate(), updating the total counts and the check value.
+       If there was no progress during the inflate() call, return a buffer
+       error.  Call updatewindow() to create and/or update the window state.
+       Note: a memory error from inflate() is non-recoverable.
+     */
+  inf_leave:
+    RESTORE();
+    if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
+            (state->mode < CHECK || flush != Z_FINISH)))
+        if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
+            state->mode = MEM;
+            return Z_MEM_ERROR;
+        }
+    in -= strm->avail_in;
+    out -= strm->avail_out;
+    strm->total_in += in;
+    strm->total_out += out;
+    state->total += out;
+    if ((state->wrap & 4) && out)
+        strm->adler = state->check =
+            UPDATE_CHECK(state->check, strm->next_out - out, out);
+    strm->data_type = (int)state->bits + (state->last ? 64 : 0) +
+                      (state->mode == TYPE ? 128 : 0) +
+                      (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0);
+    if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
+        ret = Z_BUF_ERROR;
+    return ret;
+}
+
+int ZEXPORT inflateEnd(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+    if (inflateStateCheck(strm))
+        return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    if (state->window != Z_NULL) ZFREE(strm, state->window);
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+    Tracev((stderr, "inflate: end\n"));
+    return Z_OK;
+}
+
+int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
+z_streamp strm;
+Bytef *dictionary;
+uInt *dictLength;
+{
+    struct inflate_state FAR *state;
+
+    /* check state */
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* copy dictionary */
+    if (state->whave && dictionary != Z_NULL) {
+        zmemcpy(dictionary, state->window + state->wnext,
+                state->whave - state->wnext);
+        zmemcpy(dictionary + state->whave - state->wnext,
+                state->window, state->wnext);
+    }
+    if (dictLength != Z_NULL)
+        *dictLength = state->whave;
+    return Z_OK;
+}
+
+int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
+z_streamp strm;
+const Bytef *dictionary;
+uInt dictLength;
+{
+    struct inflate_state FAR *state;
+    unsigned long dictid;
+    int ret;
+
+    /* check state */
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    if (state->wrap != 0 && state->mode != DICT)
+        return Z_STREAM_ERROR;
+
+    /* check for correct dictionary identifier */
+    if (state->mode == DICT) {
+        dictid = adler32(0L, Z_NULL, 0);
+        dictid = adler32(dictid, dictionary, dictLength);
+        if (dictid != state->check)
+            return Z_DATA_ERROR;
+    }
+
+    /* copy dictionary to window using updatewindow(), which will amend the
+       existing dictionary if appropriate */
+    ret = updatewindow(strm, dictionary + dictLength, dictLength);
+    if (ret) {
+        state->mode = MEM;
+        return Z_MEM_ERROR;
+    }
+    state->havedict = 1;
+    Tracev((stderr, "inflate:   dictionary set\n"));
+    return Z_OK;
+}
+
+int ZEXPORT inflateGetHeader(strm, head)
+z_streamp strm;
+gz_headerp head;
+{
+    struct inflate_state FAR *state;
+
+    /* check state */
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;
+
+    /* save header structure */
+    state->head = head;
+    head->done = 0;
+    return Z_OK;
+}
+
+/*
+   Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff.  Return when found
+   or when out of input.  When called, *have is the number of pattern bytes
+   found in order so far, in 0..3.  On return *have is updated to the new
+   state.  If on return *have equals four, then the pattern was found and the
+   return value is how many bytes were read including the last byte of the
+   pattern.  If *have is less than four, then the pattern has not been found
+   yet and the return value is len.  In the latter case, syncsearch() can be
+   called again with more data and the *have state.  *have is initialized to
+   zero for the first call.
+ */
+local unsigned syncsearch(have, buf, len)
+unsigned FAR *have;
+const unsigned char FAR *buf;
+unsigned len;
+{
+    unsigned got;
+    unsigned next;
+
+    got = *have;
+    next = 0;
+    while (next < len && got < 4) {
+        if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
+            got++;
+        else if (buf[next])
+            got = 0;
+        else
+            got = 4 - got;
+        next++;
+    }
+    *have = got;
+    return next;
+}
+
+int ZEXPORT inflateSync(strm)
+z_streamp strm;
+{
+    unsigned len;               /* number of bytes to look at or looked at */
+    int flags;                  /* temporary to save header status */
+    unsigned long in, out;      /* temporary to save total_in and total_out */
+    unsigned char buf[4];       /* to restore bit buffer to byte string */
+    struct inflate_state FAR *state;
+
+    /* check parameters */
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;
+
+    /* if first time, start search in bit buffer */
+    if (state->mode != SYNC) {
+        state->mode = SYNC;
+        state->hold <<= state->bits & 7;
+        state->bits -= state->bits & 7;
+        len = 0;
+        while (state->bits >= 8) {
+            buf[len++] = (unsigned char)(state->hold);
+            state->hold >>= 8;
+            state->bits -= 8;
+        }
+        state->have = 0;
+        syncsearch(&(state->have), buf, len);
+    }
+
+    /* search available input */
+    len = syncsearch(&(state->have), strm->next_in, strm->avail_in);
+    strm->avail_in -= len;
+    strm->next_in += len;
+    strm->total_in += len;
+
+    /* return no joy or set up to restart inflate() on a new block */
+    if (state->have != 4) return Z_DATA_ERROR;
+    if (state->flags == -1)
+        state->wrap = 0;    /* if no header yet, treat as raw */
+    else
+        state->wrap &= ~4;  /* no point in computing a check value now */
+    flags = state->flags;
+    in = strm->total_in;  out = strm->total_out;
+    inflateReset(strm);
+    strm->total_in = in;  strm->total_out = out;
+    state->flags = flags;
+    state->mode = TYPE;
+    return Z_OK;
+}
+
+/*
+   Returns true if inflate is currently at the end of a block generated by
+   Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
+   implementation to provide an additional safety check. PPP uses
+   Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored
+   block. When decompressing, PPP checks that at the end of input packet,
+   inflate is waiting for these length bytes.
+ */
+int ZEXPORT inflateSyncPoint(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    return state->mode == STORED && state->bits == 0;
+}
+
+int ZEXPORT inflateCopy(dest, source)
+z_streamp dest;
+z_streamp source;
+{
+    struct inflate_state FAR *state;
+    struct inflate_state FAR *copy;
+    unsigned char FAR *window;
+    unsigned wsize;
+
+    /* check input */
+    if (inflateStateCheck(source) || dest == Z_NULL)
+        return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)source->state;
+
+    /* allocate space */
+    copy = (struct inflate_state FAR *)
+           ZALLOC(source, 1, sizeof(struct inflate_state));
+    if (copy == Z_NULL) return Z_MEM_ERROR;
+    window = Z_NULL;
+    if (state->window != Z_NULL) {
+        window = (unsigned char FAR *)
+                 ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));
+        if (window == Z_NULL) {
+            ZFREE(source, copy);
+            return Z_MEM_ERROR;
+        }
+    }
+
+    /* copy state */
+    zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
+    zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
+    copy->strm = dest;
+    if (state->lencode >= state->codes &&
+        state->lencode <= state->codes + ENOUGH - 1) {
+        copy->lencode = copy->codes + (state->lencode - state->codes);
+        copy->distcode = copy->codes + (state->distcode - state->codes);
+    }
+    copy->next = copy->codes + (state->next - state->codes);
+    if (window != Z_NULL) {
+        wsize = 1U << state->wbits;
+        zmemcpy(window, state->window, wsize);
+    }
+    copy->window = window;
+    dest->state = (struct internal_state FAR *)copy;
+    return Z_OK;
+}
+
+int ZEXPORT inflateUndermine(strm, subvert)
+z_streamp strm;
+int subvert;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+    state->sane = !subvert;
+    return Z_OK;
+#else
+    (void)subvert;
+    state->sane = 1;
+    return Z_DATA_ERROR;
+#endif
+}
+
+int ZEXPORT inflateValidate(strm, check)
+z_streamp strm;
+int check;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    if (check && state->wrap)
+        state->wrap |= 4;
+    else
+        state->wrap &= ~4;
+    return Z_OK;
+}
+
+long ZEXPORT inflateMark(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+
+    if (inflateStateCheck(strm))
+        return -(1L << 16);
+    state = (struct inflate_state FAR *)strm->state;
+    return (long)(((unsigned long)((long)state->back)) << 16) +
+        (state->mode == COPY ? state->length :
+            (state->mode == MATCH ? state->was - state->length : 0));
+}
+
+unsigned long ZEXPORT inflateCodesUsed(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+    if (inflateStateCheck(strm)) return (unsigned long)-1;
+    state = (struct inflate_state FAR *)strm->state;
+    return (unsigned long)(state->next - state->codes);
+}
diff --git a/lib/zlib/inflate.h b/lib/zlib/inflate.h
new file mode 100644
index 0000000..f127b6b
--- /dev/null
+++ b/lib/zlib/inflate.h
@@ -0,0 +1,126 @@
+/* inflate.h -- internal inflate state definition
+ * Copyright (C) 1995-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* define NO_GZIP when compiling if you want to disable gzip header and
+   trailer decoding by inflate().  NO_GZIP would be used to avoid linking in
+   the crc code when it is not needed.  For shared libraries, gzip decoding
+   should be left enabled. */
+#ifndef NO_GZIP
+#  define GUNZIP
+#endif
+
+/* Possible inflate modes between inflate() calls */
+typedef enum {
+    HEAD = 16180,   /* i: waiting for magic header */
+    FLAGS,      /* i: waiting for method and flags (gzip) */
+    TIME,       /* i: waiting for modification time (gzip) */
+    OS,         /* i: waiting for extra flags and operating system (gzip) */
+    EXLEN,      /* i: waiting for extra length (gzip) */
+    EXTRA,      /* i: waiting for extra bytes (gzip) */
+    NAME,       /* i: waiting for end of file name (gzip) */
+    COMMENT,    /* i: waiting for end of comment (gzip) */
+    HCRC,       /* i: waiting for header crc (gzip) */
+    DICTID,     /* i: waiting for dictionary check value */
+    DICT,       /* waiting for inflateSetDictionary() call */
+        TYPE,       /* i: waiting for type bits, including last-flag bit */
+        TYPEDO,     /* i: same, but skip check to exit inflate on new block */
+        STORED,     /* i: waiting for stored size (length and complement) */
+        COPY_,      /* i/o: same as COPY below, but only first time in */
+        COPY,       /* i/o: waiting for input or output to copy stored block */
+        TABLE,      /* i: waiting for dynamic block table lengths */
+        LENLENS,    /* i: waiting for code length code lengths */
+        CODELENS,   /* i: waiting for length/lit and distance code lengths */
+            LEN_,       /* i: same as LEN below, but only first time in */
+            LEN,        /* i: waiting for length/lit/eob code */
+            LENEXT,     /* i: waiting for length extra bits */
+            DIST,       /* i: waiting for distance code */
+            DISTEXT,    /* i: waiting for distance extra bits */
+            MATCH,      /* o: waiting for output space to copy string */
+            LIT,        /* o: waiting for output space to write literal */
+    CHECK,      /* i: waiting for 32-bit check value */
+    LENGTH,     /* i: waiting for 32-bit length (gzip) */
+    DONE,       /* finished check, done -- remain here until reset */
+    BAD,        /* got a data error -- remain here until reset */
+    MEM,        /* got an inflate() memory error -- remain here until reset */
+    SYNC        /* looking for synchronization bytes to restart inflate() */
+} inflate_mode;
+
+/*
+    State transitions between above modes -
+
+    (most modes can go to BAD or MEM on error -- not shown for clarity)
+
+    Process header:
+        HEAD -> (gzip) or (zlib) or (raw)
+        (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
+                  HCRC -> TYPE
+        (zlib) -> DICTID or TYPE
+        DICTID -> DICT -> TYPE
+        (raw) -> TYPEDO
+    Read deflate blocks:
+            TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
+            STORED -> COPY_ -> COPY -> TYPE
+            TABLE -> LENLENS -> CODELENS -> LEN_
+            LEN_ -> LEN
+    Read deflate codes in fixed or dynamic block:
+                LEN -> LENEXT or LIT or TYPE
+                LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
+                LIT -> LEN
+    Process trailer:
+        CHECK -> LENGTH -> DONE
+ */
+
+/* State maintained between inflate() calls -- approximately 7K bytes, not
+   including the allocated sliding window, which is up to 32K bytes. */
+struct inflate_state {
+    z_streamp strm;             /* pointer back to this zlib stream */
+    inflate_mode mode;          /* current inflate mode */
+    int last;                   /* true if processing last block */
+    int wrap;                   /* bit 0 true for zlib, bit 1 true for gzip,
+                                   bit 2 true to validate check value */
+    int havedict;               /* true if dictionary provided */
+    int flags;                  /* gzip header method and flags, 0 if zlib, or
+                                   -1 if raw or no header yet */
+    unsigned dmax;              /* zlib header max distance (INFLATE_STRICT) */
+    unsigned long check;        /* protected copy of check value */
+    unsigned long total;        /* protected copy of output count */
+    gz_headerp head;            /* where to save gzip header information */
+        /* sliding window */
+    unsigned wbits;             /* log base 2 of requested window size */
+    unsigned wsize;             /* window size or zero if not using window */
+    unsigned whave;             /* valid bytes in the window */
+    unsigned wnext;             /* window write index */
+    unsigned char FAR *window;  /* allocated sliding window, if needed */
+        /* bit accumulator */
+    unsigned long hold;         /* input bit accumulator */
+    unsigned bits;              /* number of bits in "in" */
+        /* for string and stored block copying */
+    unsigned length;            /* literal or length of data to copy */
+    unsigned offset;            /* distance back to copy string from */
+        /* for table and code decoding */
+    unsigned extra;             /* extra bits needed */
+        /* fixed and dynamic code tables */
+    code const FAR *lencode;    /* starting table for length/literal codes */
+    code const FAR *distcode;   /* starting table for distance codes */
+    unsigned lenbits;           /* index bits for lencode */
+    unsigned distbits;          /* index bits for distcode */
+        /* dynamic table building */
+    unsigned ncode;             /* number of code length code lengths */
+    unsigned nlen;              /* number of length code lengths */
+    unsigned ndist;             /* number of distance code lengths */
+    unsigned have;              /* number of code lengths in lens[] */
+    code FAR *next;             /* next available space in codes[] */
+    unsigned short lens[320];   /* temporary storage for code lengths */
+    unsigned short work[288];   /* work area for code table building */
+    code codes[ENOUGH];         /* space for code tables */
+    int sane;                   /* if false, allow invalid distance too far */
+    int back;                   /* bits back of last unprocessed length/lit */
+    unsigned was;               /* initial length of match */
+};
diff --git a/lib/zlib/inftrees.c b/lib/zlib/inftrees.c
new file mode 100644
index 0000000..57d2793
--- /dev/null
+++ b/lib/zlib/inftrees.c
@@ -0,0 +1,304 @@
+/* inftrees.c -- generate Huffman trees for efficient decoding
+ * Copyright (C) 1995-2022 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+
+#define MAXBITS 15
+
+const char inflate_copyright[] =
+   " inflate 1.2.13 Copyright 1995-2022 Mark Adler ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+
+/*
+   Build a set of tables to decode the provided canonical Huffman code.
+   The code lengths are lens[0..codes-1].  The result starts at *table,
+   whose indices are 0..2^bits-1.  work is a writable array of at least
+   lens shorts, which is used as a work area.  type is the type of code
+   to be generated, CODES, LENS, or DISTS.  On return, zero is success,
+   -1 is an invalid code, and +1 means that ENOUGH isn't enough.  table
+   on return points to the next available entry's address.  bits is the
+   requested root table index bits, and on return it is the actual root
+   table index bits.  It will differ if the request is greater than the
+   longest code or if it is less than the shortest code.
+ */
+int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)
+codetype type;
+unsigned short FAR *lens;
+unsigned codes;
+code FAR * FAR *table;
+unsigned FAR *bits;
+unsigned short FAR *work;
+{
+    unsigned len;               /* a code's length in bits */
+    unsigned sym;               /* index of code symbols */
+    unsigned min, max;          /* minimum and maximum code lengths */
+    unsigned root;              /* number of index bits for root table */
+    unsigned curr;              /* number of index bits for current table */
+    unsigned drop;              /* code bits to drop for sub-table */
+    int left;                   /* number of prefix codes available */
+    unsigned used;              /* code entries in table used */
+    unsigned huff;              /* Huffman code */
+    unsigned incr;              /* for incrementing code, index */
+    unsigned fill;              /* index for replicating entries */
+    unsigned low;               /* low bits for current root entry */
+    unsigned mask;              /* mask for low root bits */
+    code here;                  /* table entry for duplication */
+    code FAR *next;             /* next available space in table */
+    const unsigned short FAR *base;     /* base value table to use */
+    const unsigned short FAR *extra;    /* extra bits table to use */
+    unsigned match;             /* use base and extra for symbol >= match */
+    unsigned short count[MAXBITS+1];    /* number of codes of each length */
+    unsigned short offs[MAXBITS+1];     /* offsets in table for each length */
+    static const unsigned short lbase[31] = { /* Length codes 257..285 base */
+        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
+    static const unsigned short lext[31] = { /* Length codes 257..285 extra */
+        16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 194, 65};
+    static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
+        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+        8193, 12289, 16385, 24577, 0, 0};
+    static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
+        16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
+        23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
+        28, 28, 29, 29, 64, 64};
+
+    /*
+       Process a set of code lengths to create a canonical Huffman code.  The
+       code lengths are lens[0..codes-1].  Each length corresponds to the
+       symbols 0..codes-1.  The Huffman code is generated by first sorting the
+       symbols by length from short to long, and retaining the symbol order
+       for codes with equal lengths.  Then the code starts with all zero bits
+       for the first code of the shortest length, and the codes are integer
+       increments for the same length, and zeros are appended as the length
+       increases.  For the deflate format, these bits are stored backwards
+       from their more natural integer increment ordering, and so when the
+       decoding tables are built in the large loop below, the integer codes
+       are incremented backwards.
+
+       This routine assumes, but does not check, that all of the entries in
+       lens[] are in the range 0..MAXBITS.  The caller must assure this.
+       1..MAXBITS is interpreted as that code length.  zero means that that
+       symbol does not occur in this code.
+
+       The codes are sorted by computing a count of codes for each length,
+       creating from that a table of starting indices for each length in the
+       sorted table, and then entering the symbols in order in the sorted
+       table.  The sorted table is work[], with that space being provided by
+       the caller.
+
+       The length counts are used for other purposes as well, i.e. finding
+       the minimum and maximum length codes, determining if there are any
+       codes at all, checking for a valid set of lengths, and looking ahead
+       at length counts to determine sub-table sizes when building the
+       decoding tables.
+     */
+
+    /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+    for (len = 0; len <= MAXBITS; len++)
+        count[len] = 0;
+    for (sym = 0; sym < codes; sym++)
+        count[lens[sym]]++;
+
+    /* bound code lengths, force root to be within code lengths */
+    root = *bits;
+    for (max = MAXBITS; max >= 1; max--)
+        if (count[max] != 0) break;
+    if (root > max) root = max;
+    if (max == 0) {                     /* no symbols to code at all */
+        here.op = (unsigned char)64;    /* invalid code marker */
+        here.bits = (unsigned char)1;
+        here.val = (unsigned short)0;
+        *(*table)++ = here;             /* make a table to force an error */
+        *(*table)++ = here;
+        *bits = 1;
+        return 0;     /* no symbols, but wait for decoding to report error */
+    }
+    for (min = 1; min < max; min++)
+        if (count[min] != 0) break;
+    if (root < min) root = min;
+
+    /* check for an over-subscribed or incomplete set of lengths */
+    left = 1;
+    for (len = 1; len <= MAXBITS; len++) {
+        left <<= 1;
+        left -= count[len];
+        if (left < 0) return -1;        /* over-subscribed */
+    }
+    if (left > 0 && (type == CODES || max != 1))
+        return -1;                      /* incomplete set */
+
+    /* generate offsets into symbol table for each length for sorting */
+    offs[1] = 0;
+    for (len = 1; len < MAXBITS; len++)
+        offs[len + 1] = offs[len] + count[len];
+
+    /* sort symbols by length, by symbol order within each length */
+    for (sym = 0; sym < codes; sym++)
+        if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
+
+    /*
+       Create and fill in decoding tables.  In this loop, the table being
+       filled is at next and has curr index bits.  The code being used is huff
+       with length len.  That code is converted to an index by dropping drop
+       bits off of the bottom.  For codes where len is less than drop + curr,
+       those top drop + curr - len bits are incremented through all values to
+       fill the table with replicated entries.
+
+       root is the number of index bits for the root table.  When len exceeds
+       root, sub-tables are created pointed to by the root entry with an index
+       of the low root bits of huff.  This is saved in low to check for when a
+       new sub-table should be started.  drop is zero when the root table is
+       being filled, and drop is root when sub-tables are being filled.
+
+       When a new sub-table is needed, it is necessary to look ahead in the
+       code lengths to determine what size sub-table is needed.  The length
+       counts are used for this, and so count[] is decremented as codes are
+       entered in the tables.
+
+       used keeps track of how many table entries have been allocated from the
+       provided *table space.  It is checked for LENS and DIST tables against
+       the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
+       the initial root table size constants.  See the comments in inftrees.h
+       for more information.
+
+       sym increments through all symbols, and the loop terminates when
+       all codes of length max, i.e. all codes, have been processed.  This
+       routine permits incomplete codes, so another loop after this one fills
+       in the rest of the decoding tables with invalid code markers.
+     */
+
+    /* set up for code type */
+    switch (type) {
+    case CODES:
+        base = extra = work;    /* dummy value--not used */
+        match = 20;
+        break;
+    case LENS:
+        base = lbase;
+        extra = lext;
+        match = 257;
+        break;
+    default:    /* DISTS */
+        base = dbase;
+        extra = dext;
+        match = 0;
+    }
+
+    /* initialize state for loop */
+    huff = 0;                   /* starting code */
+    sym = 0;                    /* starting code symbol */
+    len = min;                  /* starting code length */
+    next = *table;              /* current table to fill in */
+    curr = root;                /* current table index bits */
+    drop = 0;                   /* current bits to drop from code for index */
+    low = (unsigned)(-1);       /* trigger new sub-table when len > root */
+    used = 1U << root;          /* use root table entries */
+    mask = used - 1;            /* mask for comparing low */
+
+    /* check available table space */
+    if ((type == LENS && used > ENOUGH_LENS) ||
+        (type == DISTS && used > ENOUGH_DISTS))
+        return 1;
+
+    /* process all codes and make table entries */
+    for (;;) {
+        /* create table entry */
+        here.bits = (unsigned char)(len - drop);
+        if (work[sym] + 1U < match) {
+            here.op = (unsigned char)0;
+            here.val = work[sym];
+        }
+        else if (work[sym] >= match) {
+            here.op = (unsigned char)(extra[work[sym] - match]);
+            here.val = base[work[sym] - match];
+        }
+        else {
+            here.op = (unsigned char)(32 + 64);         /* end of block */
+            here.val = 0;
+        }
+
+        /* replicate for those indices with low len bits equal to huff */
+        incr = 1U << (len - drop);
+        fill = 1U << curr;
+        min = fill;                 /* save offset to next table */
+        do {
+            fill -= incr;
+            next[(huff >> drop) + fill] = here;
+        } while (fill != 0);
+
+        /* backwards increment the len-bit code huff */
+        incr = 1U << (len - 1);
+        while (huff & incr)
+            incr >>= 1;
+        if (incr != 0) {
+            huff &= incr - 1;
+            huff += incr;
+        }
+        else
+            huff = 0;
+
+        /* go to next symbol, update count, len */
+        sym++;
+        if (--(count[len]) == 0) {
+            if (len == max) break;
+            len = lens[work[sym]];
+        }
+
+        /* create new sub-table if needed */
+        if (len > root && (huff & mask) != low) {
+            /* if first time, transition to sub-tables */
+            if (drop == 0)
+                drop = root;
+
+            /* increment past last table */
+            next += min;            /* here min is 1 << curr */
+
+            /* determine length of next table */
+            curr = len - drop;
+            left = (int)(1 << curr);
+            while (curr + drop < max) {
+                left -= count[curr + drop];
+                if (left <= 0) break;
+                curr++;
+                left <<= 1;
+            }
+
+            /* check for enough space */
+            used += 1U << curr;
+            if ((type == LENS && used > ENOUGH_LENS) ||
+                (type == DISTS && used > ENOUGH_DISTS))
+                return 1;
+
+            /* point entry in root table to sub-table */
+            low = huff & mask;
+            (*table)[low].op = (unsigned char)curr;
+            (*table)[low].bits = (unsigned char)root;
+            (*table)[low].val = (unsigned short)(next - *table);
+        }
+    }
+
+    /* fill in remaining table entry if code is incomplete (guaranteed to have
+       at most one remaining entry, since if the code is incomplete, the
+       maximum code length that was allowed to get this far is one bit) */
+    if (huff != 0) {
+        here.op = (unsigned char)64;            /* invalid code marker */
+        here.bits = (unsigned char)(len - drop);
+        here.val = (unsigned short)0;
+        next[huff] = here;
+    }
+
+    /* set return parameters */
+    *table += used;
+    *bits = root;
+    return 0;
+}
diff --git a/lib/zlib/inftrees.h b/lib/zlib/inftrees.h
new file mode 100644
index 0000000..f536653
--- /dev/null
+++ b/lib/zlib/inftrees.h
@@ -0,0 +1,62 @@
+/* inftrees.h -- header to use inftrees.c
+ * Copyright (C) 1995-2005, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* Structure for decoding tables.  Each entry provides either the
+   information needed to do the operation requested by the code that
+   indexed that table entry, or it provides a pointer to another
+   table that indexes more bits of the code.  op indicates whether
+   the entry is a pointer to another table, a literal, a length or
+   distance, an end-of-block, or an invalid code.  For a table
+   pointer, the low four bits of op is the number of index bits of
+   that table.  For a length or distance, the low four bits of op
+   is the number of extra bits to get after the code.  bits is
+   the number of bits in this code or part of the code to drop off
+   of the bit buffer.  val is the actual byte to output in the case
+   of a literal, the base length or distance, or the offset from
+   the current table to the next table.  Each entry is four bytes. */
+typedef struct {
+    unsigned char op;           /* operation, extra bits, table bits */
+    unsigned char bits;         /* bits in this part of the code */
+    unsigned short val;         /* offset in table or code value */
+} code;
+
+/* op values as set by inflate_table():
+    00000000 - literal
+    0000tttt - table link, tttt != 0 is the number of table index bits
+    0001eeee - length or distance, eeee is the number of extra bits
+    01100000 - end of block
+    01000000 - invalid code
+ */
+
+/* Maximum size of the dynamic table.  The maximum number of code structures is
+   1444, which is the sum of 852 for literal/length codes and 592 for distance
+   codes.  These values were found by exhaustive searches using the program
+   examples/enough.c found in the zlib distribution.  The arguments to that
+   program are the number of symbols, the initial root table size, and the
+   maximum bit length of a code.  "enough 286 9 15" for literal/length codes
+   returns returns 852, and "enough 30 6 15" for distance codes returns 592.
+   The initial root table size (9 or 6) is found in the fifth argument of the
+   inflate_table() calls in inflate.c and infback.c.  If the root table size is
+   changed, then these maximum sizes would be need to be recalculated and
+   updated. */
+#define ENOUGH_LENS 852
+#define ENOUGH_DISTS 592
+#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
+
+/* Type of code to build for inflate_table() */
+typedef enum {
+    CODES,
+    LENS,
+    DISTS
+} codetype;
+
+int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,
+                             unsigned codes, code FAR * FAR *table,
+                             unsigned FAR *bits, unsigned short FAR *work));
diff --git a/lib/zlib/trees.c b/lib/zlib/trees.c
new file mode 100644
index 0000000..5f305c4
--- /dev/null
+++ b/lib/zlib/trees.c
@@ -0,0 +1,1181 @@
+/* trees.c -- output deflated data using Huffman coding
+ * Copyright (C) 1995-2021 Jean-loup Gailly
+ * detect_data_type() function provided freely by Cosmin Truta, 2006
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/*
+ *  ALGORITHM
+ *
+ *      The "deflation" process uses several Huffman trees. The more
+ *      common source values are represented by shorter bit sequences.
+ *
+ *      Each code tree is stored in a compressed form which is itself
+ * a Huffman encoding of the lengths of all the code strings (in
+ * ascending order by source values).  The actual code strings are
+ * reconstructed from the lengths in the inflate process, as described
+ * in the deflate specification.
+ *
+ *  REFERENCES
+ *
+ *      Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
+ *      Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
+ *
+ *      Storer, James A.
+ *          Data Compression:  Methods and Theory, pp. 49-50.
+ *          Computer Science Press, 1988.  ISBN 0-7167-8156-5.
+ *
+ *      Sedgewick, R.
+ *          Algorithms, p290.
+ *          Addison-Wesley, 1983. ISBN 0-201-06672-6.
+ */
+
+/* @(#) $Id$ */
+
+/* #define GEN_TREES_H */
+
+#include "deflate.h"
+
+#ifdef ZLIB_DEBUG
+#  include <ctype.h>
+#endif
+
+/* ===========================================================================
+ * Constants
+ */
+
+#define MAX_BL_BITS 7
+/* Bit length codes must not exceed MAX_BL_BITS bits */
+
+#define END_BLOCK 256
+/* end of block literal code */
+
+#define REP_3_6      16
+/* repeat previous bit length 3-6 times (2 bits of repeat count) */
+
+#define REPZ_3_10    17
+/* repeat a zero length 3-10 times  (3 bits of repeat count) */
+
+#define REPZ_11_138  18
+/* repeat a zero length 11-138 times  (7 bits of repeat count) */
+
+local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
+   = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};
+
+local const int extra_dbits[D_CODES] /* extra bits for each distance code */
+   = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
+
+local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
+   = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};
+
+local const uch bl_order[BL_CODES]
+   = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
+/* The lengths of the bit length codes are sent in order of decreasing
+ * probability, to avoid transmitting the lengths for unused bit length codes.
+ */
+
+/* ===========================================================================
+ * Local data. These are initialized only once.
+ */
+
+#define DIST_CODE_LEN  512 /* see definition of array dist_code below */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+/* non ANSI compilers may not accept trees.h */
+
+local ct_data static_ltree[L_CODES+2];
+/* The static literal tree. Since the bit lengths are imposed, there is no
+ * need for the L_CODES extra codes used during heap construction. However
+ * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
+ * below).
+ */
+
+local ct_data static_dtree[D_CODES];
+/* The static distance tree. (Actually a trivial tree since all codes use
+ * 5 bits.)
+ */
+
+uch _dist_code[DIST_CODE_LEN];
+/* Distance codes. The first 256 values correspond to the distances
+ * 3 .. 258, the last 256 values correspond to the top 8 bits of
+ * the 15 bit distances.
+ */
+
+uch _length_code[MAX_MATCH-MIN_MATCH+1];
+/* length code for each normalized match length (0 == MIN_MATCH) */
+
+local int base_length[LENGTH_CODES];
+/* First normalized length for each code (0 = MIN_MATCH) */
+
+local int base_dist[D_CODES];
+/* First normalized distance for each code (0 = distance of 1) */
+
+#else
+#  include "trees.h"
+#endif /* GEN_TREES_H */
+
+struct static_tree_desc_s {
+    const ct_data *static_tree;  /* static tree or NULL */
+    const intf *extra_bits;      /* extra bits for each code or NULL */
+    int     extra_base;          /* base index for extra_bits */
+    int     elems;               /* max number of elements in the tree */
+    int     max_length;          /* max bit length for the codes */
+};
+
+local const static_tree_desc  static_l_desc =
+{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
+
+local const static_tree_desc  static_d_desc =
+{static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS};
+
+local const static_tree_desc  static_bl_desc =
+{(const ct_data *)0, extra_blbits, 0,   BL_CODES, MAX_BL_BITS};
+
+/* ===========================================================================
+ * Local (static) routines in this file.
+ */
+
+local void tr_static_init OF((void));
+local void init_block     OF((deflate_state *s));
+local void pqdownheap     OF((deflate_state *s, ct_data *tree, int k));
+local void gen_bitlen     OF((deflate_state *s, tree_desc *desc));
+local void gen_codes      OF((ct_data *tree, int max_code, ushf *bl_count));
+local void build_tree     OF((deflate_state *s, tree_desc *desc));
+local void scan_tree      OF((deflate_state *s, ct_data *tree, int max_code));
+local void send_tree      OF((deflate_state *s, ct_data *tree, int max_code));
+local int  build_bl_tree  OF((deflate_state *s));
+local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
+                              int blcodes));
+local void compress_block OF((deflate_state *s, const ct_data *ltree,
+                              const ct_data *dtree));
+local int  detect_data_type OF((deflate_state *s));
+local unsigned bi_reverse OF((unsigned code, int len));
+local void bi_windup      OF((deflate_state *s));
+local void bi_flush       OF((deflate_state *s));
+
+#ifdef GEN_TREES_H
+local void gen_trees_header OF((void));
+#endif
+
+#ifndef ZLIB_DEBUG
+#  define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
+   /* Send a code of the given tree. c and tree must not have side effects */
+
+#else /* !ZLIB_DEBUG */
+#  define send_code(s, c, tree) \
+     { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
+       send_bits(s, tree[c].Code, tree[c].Len); }
+#endif
+
+/* ===========================================================================
+ * Output a short LSB first on the stream.
+ * IN assertion: there is enough room in pendingBuf.
+ */
+#define put_short(s, w) { \
+    put_byte(s, (uch)((w) & 0xff)); \
+    put_byte(s, (uch)((ush)(w) >> 8)); \
+}
+
+/* ===========================================================================
+ * Send a value on a given number of bits.
+ * IN assertion: length <= 16 and value fits in length bits.
+ */
+#ifdef ZLIB_DEBUG
+local void send_bits      OF((deflate_state *s, int value, int length));
+
+local void send_bits(s, value, length)
+    deflate_state *s;
+    int value;  /* value to send */
+    int length; /* number of bits */
+{
+    Tracevv((stderr," l %2d v %4x ", length, value));
+    Assert(length > 0 && length <= 15, "invalid length");
+    s->bits_sent += (ulg)length;
+
+    /* If not enough room in bi_buf, use (valid) bits from bi_buf and
+     * (16 - bi_valid) bits from value, leaving (width - (16 - bi_valid))
+     * unused bits in value.
+     */
+    if (s->bi_valid > (int)Buf_size - length) {
+        s->bi_buf |= (ush)value << s->bi_valid;
+        put_short(s, s->bi_buf);
+        s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
+        s->bi_valid += length - Buf_size;
+    } else {
+        s->bi_buf |= (ush)value << s->bi_valid;
+        s->bi_valid += length;
+    }
+}
+#else /* !ZLIB_DEBUG */
+
+#define send_bits(s, value, length) \
+{ int len = length;\
+  if (s->bi_valid > (int)Buf_size - len) {\
+    int val = (int)value;\
+    s->bi_buf |= (ush)val << s->bi_valid;\
+    put_short(s, s->bi_buf);\
+    s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
+    s->bi_valid += len - Buf_size;\
+  } else {\
+    s->bi_buf |= (ush)(value) << s->bi_valid;\
+    s->bi_valid += len;\
+  }\
+}
+#endif /* ZLIB_DEBUG */
+
+
+/* the arguments must not have side effects */
+
+/* ===========================================================================
+ * Initialize the various 'constant' tables.
+ */
+local void tr_static_init()
+{
+#if defined(GEN_TREES_H) || !defined(STDC)
+    static int static_init_done = 0;
+    int n;        /* iterates over tree elements */
+    int bits;     /* bit counter */
+    int length;   /* length value */
+    int code;     /* code value */
+    int dist;     /* distance index */
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    if (static_init_done) return;
+
+    /* For some embedded targets, global variables are not initialized: */
+#ifdef NO_INIT_GLOBAL_POINTERS
+    static_l_desc.static_tree = static_ltree;
+    static_l_desc.extra_bits = extra_lbits;
+    static_d_desc.static_tree = static_dtree;
+    static_d_desc.extra_bits = extra_dbits;
+    static_bl_desc.extra_bits = extra_blbits;
+#endif
+
+    /* Initialize the mapping length (0..255) -> length code (0..28) */
+    length = 0;
+    for (code = 0; code < LENGTH_CODES-1; code++) {
+        base_length[code] = length;
+        for (n = 0; n < (1 << extra_lbits[code]); n++) {
+            _length_code[length++] = (uch)code;
+        }
+    }
+    Assert (length == 256, "tr_static_init: length != 256");
+    /* Note that the length 255 (match length 258) can be represented
+     * in two different ways: code 284 + 5 bits or code 285, so we
+     * overwrite length_code[255] to use the best encoding:
+     */
+    _length_code[length - 1] = (uch)code;
+
+    /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+    dist = 0;
+    for (code = 0 ; code < 16; code++) {
+        base_dist[code] = dist;
+        for (n = 0; n < (1 << extra_dbits[code]); n++) {
+            _dist_code[dist++] = (uch)code;
+        }
+    }
+    Assert (dist == 256, "tr_static_init: dist != 256");
+    dist >>= 7; /* from now on, all distances are divided by 128 */
+    for ( ; code < D_CODES; code++) {
+        base_dist[code] = dist << 7;
+        for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
+            _dist_code[256 + dist++] = (uch)code;
+        }
+    }
+    Assert (dist == 256, "tr_static_init: 256 + dist != 512");
+
+    /* Construct the codes of the static literal tree */
+    for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
+    n = 0;
+    while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
+    while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
+    while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
+    while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
+    /* Codes 286 and 287 do not exist, but we must include them in the
+     * tree construction to get a canonical Huffman tree (longest code
+     * all ones)
+     */
+    gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);
+
+    /* The static distance tree is trivial: */
+    for (n = 0; n < D_CODES; n++) {
+        static_dtree[n].Len = 5;
+        static_dtree[n].Code = bi_reverse((unsigned)n, 5);
+    }
+    static_init_done = 1;
+
+#  ifdef GEN_TREES_H
+    gen_trees_header();
+#  endif
+#endif /* defined(GEN_TREES_H) || !defined(STDC) */
+}
+
+/* ===========================================================================
+ * Generate the file trees.h describing the static trees.
+ */
+#ifdef GEN_TREES_H
+#  ifndef ZLIB_DEBUG
+#    include <stdio.h>
+#  endif
+
+#  define SEPARATOR(i, last, width) \
+      ((i) == (last)? "\n};\n\n" :    \
+       ((i) % (width) == (width) - 1 ? ",\n" : ", "))
+
+void gen_trees_header()
+{
+    FILE *header = fopen("trees.h", "w");
+    int i;
+
+    Assert (header != NULL, "Can't open trees.h");
+    fprintf(header,
+            "/* header created automatically with -DGEN_TREES_H */\n\n");
+
+    fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
+    for (i = 0; i < L_CODES+2; i++) {
+        fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
+                static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
+    }
+
+    fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
+    for (i = 0; i < D_CODES; i++) {
+        fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
+                static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
+    }
+
+    fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n");
+    for (i = 0; i < DIST_CODE_LEN; i++) {
+        fprintf(header, "%2u%s", _dist_code[i],
+                SEPARATOR(i, DIST_CODE_LEN-1, 20));
+    }
+
+    fprintf(header,
+        "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
+    for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
+        fprintf(header, "%2u%s", _length_code[i],
+                SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
+    }
+
+    fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
+    for (i = 0; i < LENGTH_CODES; i++) {
+        fprintf(header, "%1u%s", base_length[i],
+                SEPARATOR(i, LENGTH_CODES-1, 20));
+    }
+
+    fprintf(header, "local const int base_dist[D_CODES] = {\n");
+    for (i = 0; i < D_CODES; i++) {
+        fprintf(header, "%5u%s", base_dist[i],
+                SEPARATOR(i, D_CODES-1, 10));
+    }
+
+    fclose(header);
+}
+#endif /* GEN_TREES_H */
+
+/* ===========================================================================
+ * Initialize the tree data structures for a new zlib stream.
+ */
+void ZLIB_INTERNAL _tr_init(s)
+    deflate_state *s;
+{
+    tr_static_init();
+
+    s->l_desc.dyn_tree = s->dyn_ltree;
+    s->l_desc.stat_desc = &static_l_desc;
+
+    s->d_desc.dyn_tree = s->dyn_dtree;
+    s->d_desc.stat_desc = &static_d_desc;
+
+    s->bl_desc.dyn_tree = s->bl_tree;
+    s->bl_desc.stat_desc = &static_bl_desc;
+
+    s->bi_buf = 0;
+    s->bi_valid = 0;
+#ifdef ZLIB_DEBUG
+    s->compressed_len = 0L;
+    s->bits_sent = 0L;
+#endif
+
+    /* Initialize the first block of the first file: */
+    init_block(s);
+}
+
+/* ===========================================================================
+ * Initialize a new block.
+ */
+local void init_block(s)
+    deflate_state *s;
+{
+    int n; /* iterates over tree elements */
+
+    /* Initialize the trees. */
+    for (n = 0; n < L_CODES;  n++) s->dyn_ltree[n].Freq = 0;
+    for (n = 0; n < D_CODES;  n++) s->dyn_dtree[n].Freq = 0;
+    for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
+
+    s->dyn_ltree[END_BLOCK].Freq = 1;
+    s->opt_len = s->static_len = 0L;
+    s->sym_next = s->matches = 0;
+}
+
+#define SMALLEST 1
+/* Index within the heap array of least frequent node in the Huffman tree */
+
+
+/* ===========================================================================
+ * Remove the smallest element from the heap and recreate the heap with
+ * one less element. Updates heap and heap_len.
+ */
+#define pqremove(s, tree, top) \
+{\
+    top = s->heap[SMALLEST]; \
+    s->heap[SMALLEST] = s->heap[s->heap_len--]; \
+    pqdownheap(s, tree, SMALLEST); \
+}
+
+/* ===========================================================================
+ * Compares to subtrees, using the tree depth as tie breaker when
+ * the subtrees have equal frequency. This minimizes the worst case length.
+ */
+#define smaller(tree, n, m, depth) \
+   (tree[n].Freq < tree[m].Freq || \
+   (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
+
+/* ===========================================================================
+ * Restore the heap property by moving down the tree starting at node k,
+ * exchanging a node with the smallest of its two sons if necessary, stopping
+ * when the heap property is re-established (each father smaller than its
+ * two sons).
+ */
+local void pqdownheap(s, tree, k)
+    deflate_state *s;
+    ct_data *tree;  /* the tree to restore */
+    int k;               /* node to move down */
+{
+    int v = s->heap[k];
+    int j = k << 1;  /* left son of k */
+    while (j <= s->heap_len) {
+        /* Set j to the smallest of the two sons: */
+        if (j < s->heap_len &&
+            smaller(tree, s->heap[j + 1], s->heap[j], s->depth)) {
+            j++;
+        }
+        /* Exit if v is smaller than both sons */
+        if (smaller(tree, v, s->heap[j], s->depth)) break;
+
+        /* Exchange v with the smallest son */
+        s->heap[k] = s->heap[j];  k = j;
+
+        /* And continue down the tree, setting j to the left son of k */
+        j <<= 1;
+    }
+    s->heap[k] = v;
+}
+
+/* ===========================================================================
+ * Compute the optimal bit lengths for a tree and update the total bit length
+ * for the current block.
+ * IN assertion: the fields freq and dad are set, heap[heap_max] and
+ *    above are the tree nodes sorted by increasing frequency.
+ * OUT assertions: the field len is set to the optimal bit length, the
+ *     array bl_count contains the frequencies for each bit length.
+ *     The length opt_len is updated; static_len is also updated if stree is
+ *     not null.
+ */
+local void gen_bitlen(s, desc)
+    deflate_state *s;
+    tree_desc *desc;    /* the tree descriptor */
+{
+    ct_data *tree        = desc->dyn_tree;
+    int max_code         = desc->max_code;
+    const ct_data *stree = desc->stat_desc->static_tree;
+    const intf *extra    = desc->stat_desc->extra_bits;
+    int base             = desc->stat_desc->extra_base;
+    int max_length       = desc->stat_desc->max_length;
+    int h;              /* heap index */
+    int n, m;           /* iterate over the tree elements */
+    int bits;           /* bit length */
+    int xbits;          /* extra bits */
+    ush f;              /* frequency */
+    int overflow = 0;   /* number of elements with bit length too large */
+
+    for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;
+
+    /* In a first pass, compute the optimal bit lengths (which may
+     * overflow in the case of the bit length tree).
+     */
+    tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
+
+    for (h = s->heap_max + 1; h < HEAP_SIZE; h++) {
+        n = s->heap[h];
+        bits = tree[tree[n].Dad].Len + 1;
+        if (bits > max_length) bits = max_length, overflow++;
+        tree[n].Len = (ush)bits;
+        /* We overwrite tree[n].Dad which is no longer needed */
+
+        if (n > max_code) continue; /* not a leaf node */
+
+        s->bl_count[bits]++;
+        xbits = 0;
+        if (n >= base) xbits = extra[n - base];
+        f = tree[n].Freq;
+        s->opt_len += (ulg)f * (unsigned)(bits + xbits);
+        if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits);
+    }
+    if (overflow == 0) return;
+
+    Tracev((stderr,"\nbit length overflow\n"));
+    /* This happens for example on obj2 and pic of the Calgary corpus */
+
+    /* Find the first bit length which could increase: */
+    do {
+        bits = max_length - 1;
+        while (s->bl_count[bits] == 0) bits--;
+        s->bl_count[bits]--;        /* move one leaf down the tree */
+        s->bl_count[bits + 1] += 2; /* move one overflow item as its brother */
+        s->bl_count[max_length]--;
+        /* The brother of the overflow item also moves one step up,
+         * but this does not affect bl_count[max_length]
+         */
+        overflow -= 2;
+    } while (overflow > 0);
+
+    /* Now recompute all bit lengths, scanning in increasing frequency.
+     * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
+     * lengths instead of fixing only the wrong ones. This idea is taken
+     * from 'ar' written by Haruhiko Okumura.)
+     */
+    for (bits = max_length; bits != 0; bits--) {
+        n = s->bl_count[bits];
+        while (n != 0) {
+            m = s->heap[--h];
+            if (m > max_code) continue;
+            if ((unsigned) tree[m].Len != (unsigned) bits) {
+                Tracev((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
+                s->opt_len += ((ulg)bits - tree[m].Len) * tree[m].Freq;
+                tree[m].Len = (ush)bits;
+            }
+            n--;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Generate the codes for a given tree and bit counts (which need not be
+ * optimal).
+ * IN assertion: the array bl_count contains the bit length statistics for
+ * the given tree and the field len is set for all tree elements.
+ * OUT assertion: the field code is set for all tree elements of non
+ *     zero code length.
+ */
+local void gen_codes(tree, max_code, bl_count)
+    ct_data *tree;             /* the tree to decorate */
+    int max_code;              /* largest code with non zero frequency */
+    ushf *bl_count;            /* number of codes at each bit length */
+{
+    ush next_code[MAX_BITS+1]; /* next code value for each bit length */
+    unsigned code = 0;         /* running code value */
+    int bits;                  /* bit index */
+    int n;                     /* code index */
+
+    /* The distribution counts are first used to generate the code values
+     * without bit reversal.
+     */
+    for (bits = 1; bits <= MAX_BITS; bits++) {
+        code = (code + bl_count[bits - 1]) << 1;
+        next_code[bits] = (ush)code;
+    }
+    /* Check that the bit counts in bl_count are consistent. The last code
+     * must be all ones.
+     */
+    Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
+            "inconsistent bit counts");
+    Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+    for (n = 0;  n <= max_code; n++) {
+        int len = tree[n].Len;
+        if (len == 0) continue;
+        /* Now reverse the bits */
+        tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
+
+        Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+            n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
+    }
+}
+
+/* ===========================================================================
+ * Construct one Huffman tree and assigns the code bit strings and lengths.
+ * Update the total bit length for the current block.
+ * IN assertion: the field freq is set for all tree elements.
+ * OUT assertions: the fields len and code are set to the optimal bit length
+ *     and corresponding code. The length opt_len is updated; static_len is
+ *     also updated if stree is not null. The field max_code is set.
+ */
+local void build_tree(s, desc)
+    deflate_state *s;
+    tree_desc *desc; /* the tree descriptor */
+{
+    ct_data *tree         = desc->dyn_tree;
+    const ct_data *stree  = desc->stat_desc->static_tree;
+    int elems             = desc->stat_desc->elems;
+    int n, m;          /* iterate over heap elements */
+    int max_code = -1; /* largest code with non zero frequency */
+    int node;          /* new node being created */
+
+    /* Construct the initial heap, with least frequent element in
+     * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n + 1].
+     * heap[0] is not used.
+     */
+    s->heap_len = 0, s->heap_max = HEAP_SIZE;
+
+    for (n = 0; n < elems; n++) {
+        if (tree[n].Freq != 0) {
+            s->heap[++(s->heap_len)] = max_code = n;
+            s->depth[n] = 0;
+        } else {
+            tree[n].Len = 0;
+        }
+    }
+
+    /* The pkzip format requires that at least one distance code exists,
+     * and that at least one bit should be sent even if there is only one
+     * possible code. So to avoid special checks later on we force at least
+     * two codes of non zero frequency.
+     */
+    while (s->heap_len < 2) {
+        node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
+        tree[node].Freq = 1;
+        s->depth[node] = 0;
+        s->opt_len--; if (stree) s->static_len -= stree[node].Len;
+        /* node is 0 or 1 so it does not have extra bits */
+    }
+    desc->max_code = max_code;
+
+    /* The elements heap[heap_len/2 + 1 .. heap_len] are leaves of the tree,
+     * establish sub-heaps of increasing lengths:
+     */
+    for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
+
+    /* Construct the Huffman tree by repeatedly combining the least two
+     * frequent nodes.
+     */
+    node = elems;              /* next internal node of the tree */
+    do {
+        pqremove(s, tree, n);  /* n = node of least frequency */
+        m = s->heap[SMALLEST]; /* m = node of next least frequency */
+
+        s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
+        s->heap[--(s->heap_max)] = m;
+
+        /* Create a new node father of n and m */
+        tree[node].Freq = tree[n].Freq + tree[m].Freq;
+        s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?
+                                s->depth[n] : s->depth[m]) + 1);
+        tree[n].Dad = tree[m].Dad = (ush)node;
+#ifdef DUMP_BL_TREE
+        if (tree == s->bl_tree) {
+            fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
+                    node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
+        }
+#endif
+        /* and insert the new node in the heap */
+        s->heap[SMALLEST] = node++;
+        pqdownheap(s, tree, SMALLEST);
+
+    } while (s->heap_len >= 2);
+
+    s->heap[--(s->heap_max)] = s->heap[SMALLEST];
+
+    /* At this point, the fields freq and dad are set. We can now
+     * generate the bit lengths.
+     */
+    gen_bitlen(s, (tree_desc *)desc);
+
+    /* The field len is now set, we can generate the bit codes */
+    gen_codes ((ct_data *)tree, max_code, s->bl_count);
+}
+
+/* ===========================================================================
+ * Scan a literal or distance tree to determine the frequencies of the codes
+ * in the bit length tree.
+ */
+local void scan_tree(s, tree, max_code)
+    deflate_state *s;
+    ct_data *tree;   /* the tree to be scanned */
+    int max_code;    /* and its largest code of non zero frequency */
+{
+    int n;                     /* iterates over all tree elements */
+    int prevlen = -1;          /* last emitted length */
+    int curlen;                /* length of current code */
+    int nextlen = tree[0].Len; /* length of next code */
+    int count = 0;             /* repeat count of the current code */
+    int max_count = 7;         /* max repeat count */
+    int min_count = 4;         /* min repeat count */
+
+    if (nextlen == 0) max_count = 138, min_count = 3;
+    tree[max_code + 1].Len = (ush)0xffff; /* guard */
+
+    for (n = 0; n <= max_code; n++) {
+        curlen = nextlen; nextlen = tree[n + 1].Len;
+        if (++count < max_count && curlen == nextlen) {
+            continue;
+        } else if (count < min_count) {
+            s->bl_tree[curlen].Freq += count;
+        } else if (curlen != 0) {
+            if (curlen != prevlen) s->bl_tree[curlen].Freq++;
+            s->bl_tree[REP_3_6].Freq++;
+        } else if (count <= 10) {
+            s->bl_tree[REPZ_3_10].Freq++;
+        } else {
+            s->bl_tree[REPZ_11_138].Freq++;
+        }
+        count = 0; prevlen = curlen;
+        if (nextlen == 0) {
+            max_count = 138, min_count = 3;
+        } else if (curlen == nextlen) {
+            max_count = 6, min_count = 3;
+        } else {
+            max_count = 7, min_count = 4;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Send a literal or distance tree in compressed form, using the codes in
+ * bl_tree.
+ */
+local void send_tree(s, tree, max_code)
+    deflate_state *s;
+    ct_data *tree; /* the tree to be scanned */
+    int max_code;       /* and its largest code of non zero frequency */
+{
+    int n;                     /* iterates over all tree elements */
+    int prevlen = -1;          /* last emitted length */
+    int curlen;                /* length of current code */
+    int nextlen = tree[0].Len; /* length of next code */
+    int count = 0;             /* repeat count of the current code */
+    int max_count = 7;         /* max repeat count */
+    int min_count = 4;         /* min repeat count */
+
+    /* tree[max_code + 1].Len = -1; */  /* guard already set */
+    if (nextlen == 0) max_count = 138, min_count = 3;
+
+    for (n = 0; n <= max_code; n++) {
+        curlen = nextlen; nextlen = tree[n + 1].Len;
+        if (++count < max_count && curlen == nextlen) {
+            continue;
+        } else if (count < min_count) {
+            do { send_code(s, curlen, s->bl_tree); } while (--count != 0);
+
+        } else if (curlen != 0) {
+            if (curlen != prevlen) {
+                send_code(s, curlen, s->bl_tree); count--;
+            }
+            Assert(count >= 3 && count <= 6, " 3_6?");
+            send_code(s, REP_3_6, s->bl_tree); send_bits(s, count - 3, 2);
+
+        } else if (count <= 10) {
+            send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count - 3, 3);
+
+        } else {
+            send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count - 11, 7);
+        }
+        count = 0; prevlen = curlen;
+        if (nextlen == 0) {
+            max_count = 138, min_count = 3;
+        } else if (curlen == nextlen) {
+            max_count = 6, min_count = 3;
+        } else {
+            max_count = 7, min_count = 4;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Construct the Huffman tree for the bit lengths and return the index in
+ * bl_order of the last bit length code to send.
+ */
+local int build_bl_tree(s)
+    deflate_state *s;
+{
+    int max_blindex;  /* index of last bit length code of non zero freq */
+
+    /* Determine the bit length frequencies for literal and distance trees */
+    scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
+    scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);
+
+    /* Build the bit length tree: */
+    build_tree(s, (tree_desc *)(&(s->bl_desc)));
+    /* opt_len now includes the length of the tree representations, except the
+     * lengths of the bit lengths codes and the 5 + 5 + 4 bits for the counts.
+     */
+
+    /* Determine the number of bit length codes to send. The pkzip format
+     * requires that at least 4 bit length codes be sent. (appnote.txt says
+     * 3 but the actual value used is 4.)
+     */
+    for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
+        if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
+    }
+    /* Update opt_len to include the bit length tree and counts */
+    s->opt_len += 3*((ulg)max_blindex + 1) + 5 + 5 + 4;
+    Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
+            s->opt_len, s->static_len));
+
+    return max_blindex;
+}
+
+/* ===========================================================================
+ * Send the header for a block using dynamic Huffman trees: the counts, the
+ * lengths of the bit length codes, the literal tree and the distance tree.
+ * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+ */
+local void send_all_trees(s, lcodes, dcodes, blcodes)
+    deflate_state *s;
+    int lcodes, dcodes, blcodes; /* number of codes for each tree */
+{
+    int rank;                    /* index in bl_order */
+
+    Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
+    Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
+            "too many codes");
+    Tracev((stderr, "\nbl counts: "));
+    send_bits(s, lcodes - 257, 5);  /* not +255 as stated in appnote.txt */
+    send_bits(s, dcodes - 1,   5);
+    send_bits(s, blcodes - 4,  4);  /* not -3 as stated in appnote.txt */
+    for (rank = 0; rank < blcodes; rank++) {
+        Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
+        send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
+    }
+    Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
+
+    send_tree(s, (ct_data *)s->dyn_ltree, lcodes - 1);  /* literal tree */
+    Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
+
+    send_tree(s, (ct_data *)s->dyn_dtree, dcodes - 1);  /* distance tree */
+    Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+}
+
+/* ===========================================================================
+ * Send a stored block
+ */
+void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)
+    deflate_state *s;
+    charf *buf;       /* input block */
+    ulg stored_len;   /* length of input block */
+    int last;         /* one if this is the last block for a file */
+{
+    send_bits(s, (STORED_BLOCK<<1) + last, 3);  /* send block type */
+    bi_windup(s);        /* align on byte boundary */
+    put_short(s, (ush)stored_len);
+    put_short(s, (ush)~stored_len);
+    if (stored_len)
+        zmemcpy(s->pending_buf + s->pending, (Bytef *)buf, stored_len);
+    s->pending += stored_len;
+#ifdef ZLIB_DEBUG
+    s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
+    s->compressed_len += (stored_len + 4) << 3;
+    s->bits_sent += 2*16;
+    s->bits_sent += stored_len << 3;
+#endif
+}
+
+/* ===========================================================================
+ * Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
+ */
+void ZLIB_INTERNAL _tr_flush_bits(s)
+    deflate_state *s;
+{
+    bi_flush(s);
+}
+
+/* ===========================================================================
+ * Send one empty static block to give enough lookahead for inflate.
+ * This takes 10 bits, of which 7 may remain in the bit buffer.
+ */
+void ZLIB_INTERNAL _tr_align(s)
+    deflate_state *s;
+{
+    send_bits(s, STATIC_TREES<<1, 3);
+    send_code(s, END_BLOCK, static_ltree);
+#ifdef ZLIB_DEBUG
+    s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
+#endif
+    bi_flush(s);
+}
+
+/* ===========================================================================
+ * Determine the best encoding for the current block: dynamic trees, static
+ * trees or store, and write out the encoded block.
+ */
+void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
+    deflate_state *s;
+    charf *buf;       /* input block, or NULL if too old */
+    ulg stored_len;   /* length of input block */
+    int last;         /* one if this is the last block for a file */
+{
+    ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
+    int max_blindex = 0;  /* index of last bit length code of non zero freq */
+
+    /* Build the Huffman trees unless a stored block is forced */
+    if (s->level > 0) {
+
+        /* Check if the file is binary or text */
+        if (s->strm->data_type == Z_UNKNOWN)
+            s->strm->data_type = detect_data_type(s);
+
+        /* Construct the literal and distance trees */
+        build_tree(s, (tree_desc *)(&(s->l_desc)));
+        Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
+                s->static_len));
+
+        build_tree(s, (tree_desc *)(&(s->d_desc)));
+        Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
+                s->static_len));
+        /* At this point, opt_len and static_len are the total bit lengths of
+         * the compressed block data, excluding the tree representations.
+         */
+
+        /* Build the bit length tree for the above two trees, and get the index
+         * in bl_order of the last bit length code to send.
+         */
+        max_blindex = build_bl_tree(s);
+
+        /* Determine the best encoding. Compute the block lengths in bytes. */
+        opt_lenb = (s->opt_len + 3 + 7) >> 3;
+        static_lenb = (s->static_len + 3 + 7) >> 3;
+
+        Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
+                opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
+                s->sym_next / 3));
+
+#ifndef FORCE_STATIC
+        if (static_lenb <= opt_lenb || s->strategy == Z_FIXED)
+#endif
+            opt_lenb = static_lenb;
+
+    } else {
+        Assert(buf != (char*)0, "lost buf");
+        opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
+    }
+
+#ifdef FORCE_STORED
+    if (buf != (char*)0) { /* force stored block */
+#else
+    if (stored_len + 4 <= opt_lenb && buf != (char*)0) {
+                       /* 4: two words for the lengths */
+#endif
+        /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+         * Otherwise we can't have processed more than WSIZE input bytes since
+         * the last block flush, because compression would have been
+         * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+         * transform a block into a stored block.
+         */
+        _tr_stored_block(s, buf, stored_len, last);
+
+    } else if (static_lenb == opt_lenb) {
+        send_bits(s, (STATIC_TREES<<1) + last, 3);
+        compress_block(s, (const ct_data *)static_ltree,
+                       (const ct_data *)static_dtree);
+#ifdef ZLIB_DEBUG
+        s->compressed_len += 3 + s->static_len;
+#endif
+    } else {
+        send_bits(s, (DYN_TREES<<1) + last, 3);
+        send_all_trees(s, s->l_desc.max_code + 1, s->d_desc.max_code + 1,
+                       max_blindex + 1);
+        compress_block(s, (const ct_data *)s->dyn_ltree,
+                       (const ct_data *)s->dyn_dtree);
+#ifdef ZLIB_DEBUG
+        s->compressed_len += 3 + s->opt_len;
+#endif
+    }
+    Assert (s->compressed_len == s->bits_sent, "bad compressed size");
+    /* The above check is made mod 2^32, for files larger than 512 MB
+     * and uLong implemented on 32 bits.
+     */
+    init_block(s);
+
+    if (last) {
+        bi_windup(s);
+#ifdef ZLIB_DEBUG
+        s->compressed_len += 7;  /* align on byte boundary */
+#endif
+    }
+    Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len >> 3,
+           s->compressed_len - 7*last));
+}
+
+/* ===========================================================================
+ * Save the match info and tally the frequency counts. Return true if
+ * the current block must be flushed.
+ */
+int ZLIB_INTERNAL _tr_tally(s, dist, lc)
+    deflate_state *s;
+    unsigned dist;  /* distance of matched string */
+    unsigned lc;    /* match length - MIN_MATCH or unmatched char (dist==0) */
+{
+    s->sym_buf[s->sym_next++] = (uch)dist;
+    s->sym_buf[s->sym_next++] = (uch)(dist >> 8);
+    s->sym_buf[s->sym_next++] = (uch)lc;
+    if (dist == 0) {
+        /* lc is the unmatched char */
+        s->dyn_ltree[lc].Freq++;
+    } else {
+        s->matches++;
+        /* Here, lc is the match length - MIN_MATCH */
+        dist--;             /* dist = match distance - 1 */
+        Assert((ush)dist < (ush)MAX_DIST(s) &&
+               (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
+               (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
+
+        s->dyn_ltree[_length_code[lc] + LITERALS + 1].Freq++;
+        s->dyn_dtree[d_code(dist)].Freq++;
+    }
+    return (s->sym_next == s->sym_end);
+}
+
+/* ===========================================================================
+ * Send the block data compressed using the given Huffman trees
+ */
+local void compress_block(s, ltree, dtree)
+    deflate_state *s;
+    const ct_data *ltree; /* literal tree */
+    const ct_data *dtree; /* distance tree */
+{
+    unsigned dist;      /* distance of matched string */
+    int lc;             /* match length or unmatched char (if dist == 0) */
+    unsigned sx = 0;    /* running index in sym_buf */
+    unsigned code;      /* the code to send */
+    int extra;          /* number of extra bits to send */
+
+    if (s->sym_next != 0) do {
+        dist = s->sym_buf[sx++] & 0xff;
+        dist += (unsigned)(s->sym_buf[sx++] & 0xff) << 8;
+        lc = s->sym_buf[sx++];
+        if (dist == 0) {
+            send_code(s, lc, ltree); /* send a literal byte */
+            Tracecv(isgraph(lc), (stderr," '%c' ", lc));
+        } else {
+            /* Here, lc is the match length - MIN_MATCH */
+            code = _length_code[lc];
+            send_code(s, code + LITERALS + 1, ltree);   /* send length code */
+            extra = extra_lbits[code];
+            if (extra != 0) {
+                lc -= base_length[code];
+                send_bits(s, lc, extra);       /* send the extra length bits */
+            }
+            dist--; /* dist is now the match distance - 1 */
+            code = d_code(dist);
+            Assert (code < D_CODES, "bad d_code");
+
+            send_code(s, code, dtree);       /* send the distance code */
+            extra = extra_dbits[code];
+            if (extra != 0) {
+                dist -= (unsigned)base_dist[code];
+                send_bits(s, dist, extra);   /* send the extra distance bits */
+            }
+        } /* literal or match pair ? */
+
+        /* Check that the overlay between pending_buf and sym_buf is ok: */
+        Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
+
+    } while (sx < s->sym_next);
+
+    send_code(s, END_BLOCK, ltree);
+}
+
+/* ===========================================================================
+ * Check if the data type is TEXT or BINARY, using the following algorithm:
+ * - TEXT if the two conditions below are satisfied:
+ *    a) There are no non-portable control characters belonging to the
+ *       "block list" (0..6, 14..25, 28..31).
+ *    b) There is at least one printable character belonging to the
+ *       "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
+ * - BINARY otherwise.
+ * - The following partially-portable control characters form a
+ *   "gray list" that is ignored in this detection algorithm:
+ *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
+ * IN assertion: the fields Freq of dyn_ltree are set.
+ */
+local int detect_data_type(s)
+    deflate_state *s;
+{
+    /* block_mask is the bit mask of block-listed bytes
+     * set bits 0..6, 14..25, and 28..31
+     * 0xf3ffc07f = binary 11110011111111111100000001111111
+     */
+    unsigned long block_mask = 0xf3ffc07fUL;
+    int n;
+
+    /* Check for non-textual ("block-listed") bytes. */
+    for (n = 0; n <= 31; n++, block_mask >>= 1)
+        if ((block_mask & 1) && (s->dyn_ltree[n].Freq != 0))
+            return Z_BINARY;
+
+    /* Check for textual ("allow-listed") bytes. */
+    if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
+            || s->dyn_ltree[13].Freq != 0)
+        return Z_TEXT;
+    for (n = 32; n < LITERALS; n++)
+        if (s->dyn_ltree[n].Freq != 0)
+            return Z_TEXT;
+
+    /* There are no "block-listed" or "allow-listed" bytes:
+     * this stream either is empty or has tolerated ("gray-listed") bytes only.
+     */
+    return Z_BINARY;
+}
+
+/* ===========================================================================
+ * Reverse the first len bits of a code, using straightforward code (a faster
+ * method would use a table)
+ * IN assertion: 1 <= len <= 15
+ */
+local unsigned bi_reverse(code, len)
+    unsigned code; /* the value to invert */
+    int len;       /* its bit length */
+{
+    register unsigned res = 0;
+    do {
+        res |= code & 1;
+        code >>= 1, res <<= 1;
+    } while (--len > 0);
+    return res >> 1;
+}
+
+/* ===========================================================================
+ * Flush the bit buffer, keeping at most 7 bits in it.
+ */
+local void bi_flush(s)
+    deflate_state *s;
+{
+    if (s->bi_valid == 16) {
+        put_short(s, s->bi_buf);
+        s->bi_buf = 0;
+        s->bi_valid = 0;
+    } else if (s->bi_valid >= 8) {
+        put_byte(s, (Byte)s->bi_buf);
+        s->bi_buf >>= 8;
+        s->bi_valid -= 8;
+    }
+}
+
+/* ===========================================================================
+ * Flush the bit buffer and align the output on a byte boundary
+ */
+local void bi_windup(s)
+    deflate_state *s;
+{
+    if (s->bi_valid > 8) {
+        put_short(s, s->bi_buf);
+    } else if (s->bi_valid > 0) {
+        put_byte(s, (Byte)s->bi_buf);
+    }
+    s->bi_buf = 0;
+    s->bi_valid = 0;
+#ifdef ZLIB_DEBUG
+    s->bits_sent = (s->bits_sent + 7) & ~7;
+#endif
+}
diff --git a/lib/zlib/trees.h b/lib/zlib/trees.h
new file mode 100644
index 0000000..d35639d
--- /dev/null
+++ b/lib/zlib/trees.h
@@ -0,0 +1,128 @@
+/* header created automatically with -DGEN_TREES_H */
+
+local const ct_data static_ltree[L_CODES+2] = {
+{{ 12},{  8}}, {{140},{  8}}, {{ 76},{  8}}, {{204},{  8}}, {{ 44},{  8}},
+{{172},{  8}}, {{108},{  8}}, {{236},{  8}}, {{ 28},{  8}}, {{156},{  8}},
+{{ 92},{  8}}, {{220},{  8}}, {{ 60},{  8}}, {{188},{  8}}, {{124},{  8}},
+{{252},{  8}}, {{  2},{  8}}, {{130},{  8}}, {{ 66},{  8}}, {{194},{  8}},
+{{ 34},{  8}}, {{162},{  8}}, {{ 98},{  8}}, {{226},{  8}}, {{ 18},{  8}},
+{{146},{  8}}, {{ 82},{  8}}, {{210},{  8}}, {{ 50},{  8}}, {{178},{  8}},
+{{114},{  8}}, {{242},{  8}}, {{ 10},{  8}}, {{138},{  8}}, {{ 74},{  8}},
+{{202},{  8}}, {{ 42},{  8}}, {{170},{  8}}, {{106},{  8}}, {{234},{  8}},
+{{ 26},{  8}}, {{154},{  8}}, {{ 90},{  8}}, {{218},{  8}}, {{ 58},{  8}},
+{{186},{  8}}, {{122},{  8}}, {{250},{  8}}, {{  6},{  8}}, {{134},{  8}},
+{{ 70},{  8}}, {{198},{  8}}, {{ 38},{  8}}, {{166},{  8}}, {{102},{  8}},
+{{230},{  8}}, {{ 22},{  8}}, {{150},{  8}}, {{ 86},{  8}}, {{214},{  8}},
+{{ 54},{  8}}, {{182},{  8}}, {{118},{  8}}, {{246},{  8}}, {{ 14},{  8}},
+{{142},{  8}}, {{ 78},{  8}}, {{206},{  8}}, {{ 46},{  8}}, {{174},{  8}},
+{{110},{  8}}, {{238},{  8}}, {{ 30},{  8}}, {{158},{  8}}, {{ 94},{  8}},
+{{222},{  8}}, {{ 62},{  8}}, {{190},{  8}}, {{126},{  8}}, {{254},{  8}},
+{{  1},{  8}}, {{129},{  8}}, {{ 65},{  8}}, {{193},{  8}}, {{ 33},{  8}},
+{{161},{  8}}, {{ 97},{  8}}, {{225},{  8}}, {{ 17},{  8}}, {{145},{  8}},
+{{ 81},{  8}}, {{209},{  8}}, {{ 49},{  8}}, {{177},{  8}}, {{113},{  8}},
+{{241},{  8}}, {{  9},{  8}}, {{137},{  8}}, {{ 73},{  8}}, {{201},{  8}},
+{{ 41},{  8}}, {{169},{  8}}, {{105},{  8}}, {{233},{  8}}, {{ 25},{  8}},
+{{153},{  8}}, {{ 89},{  8}}, {{217},{  8}}, {{ 57},{  8}}, {{185},{  8}},
+{{121},{  8}}, {{249},{  8}}, {{  5},{  8}}, {{133},{  8}}, {{ 69},{  8}},
+{{197},{  8}}, {{ 37},{  8}}, {{165},{  8}}, {{101},{  8}}, {{229},{  8}},
+{{ 21},{  8}}, {{149},{  8}}, {{ 85},{  8}}, {{213},{  8}}, {{ 53},{  8}},
+{{181},{  8}}, {{117},{  8}}, {{245},{  8}}, {{ 13},{  8}}, {{141},{  8}},
+{{ 77},{  8}}, {{205},{  8}}, {{ 45},{  8}}, {{173},{  8}}, {{109},{  8}},
+{{237},{  8}}, {{ 29},{  8}}, {{157},{  8}}, {{ 93},{  8}}, {{221},{  8}},
+{{ 61},{  8}}, {{189},{  8}}, {{125},{  8}}, {{253},{  8}}, {{ 19},{  9}},
+{{275},{  9}}, {{147},{  9}}, {{403},{  9}}, {{ 83},{  9}}, {{339},{  9}},
+{{211},{  9}}, {{467},{  9}}, {{ 51},{  9}}, {{307},{  9}}, {{179},{  9}},
+{{435},{  9}}, {{115},{  9}}, {{371},{  9}}, {{243},{  9}}, {{499},{  9}},
+{{ 11},{  9}}, {{267},{  9}}, {{139},{  9}}, {{395},{  9}}, {{ 75},{  9}},
+{{331},{  9}}, {{203},{  9}}, {{459},{  9}}, {{ 43},{  9}}, {{299},{  9}},
+{{171},{  9}}, {{427},{  9}}, {{107},{  9}}, {{363},{  9}}, {{235},{  9}},
+{{491},{  9}}, {{ 27},{  9}}, {{283},{  9}}, {{155},{  9}}, {{411},{  9}},
+{{ 91},{  9}}, {{347},{  9}}, {{219},{  9}}, {{475},{  9}}, {{ 59},{  9}},
+{{315},{  9}}, {{187},{  9}}, {{443},{  9}}, {{123},{  9}}, {{379},{  9}},
+{{251},{  9}}, {{507},{  9}}, {{  7},{  9}}, {{263},{  9}}, {{135},{  9}},
+{{391},{  9}}, {{ 71},{  9}}, {{327},{  9}}, {{199},{  9}}, {{455},{  9}},
+{{ 39},{  9}}, {{295},{  9}}, {{167},{  9}}, {{423},{  9}}, {{103},{  9}},
+{{359},{  9}}, {{231},{  9}}, {{487},{  9}}, {{ 23},{  9}}, {{279},{  9}},
+{{151},{  9}}, {{407},{  9}}, {{ 87},{  9}}, {{343},{  9}}, {{215},{  9}},
+{{471},{  9}}, {{ 55},{  9}}, {{311},{  9}}, {{183},{  9}}, {{439},{  9}},
+{{119},{  9}}, {{375},{  9}}, {{247},{  9}}, {{503},{  9}}, {{ 15},{  9}},
+{{271},{  9}}, {{143},{  9}}, {{399},{  9}}, {{ 79},{  9}}, {{335},{  9}},
+{{207},{  9}}, {{463},{  9}}, {{ 47},{  9}}, {{303},{  9}}, {{175},{  9}},
+{{431},{  9}}, {{111},{  9}}, {{367},{  9}}, {{239},{  9}}, {{495},{  9}},
+{{ 31},{  9}}, {{287},{  9}}, {{159},{  9}}, {{415},{  9}}, {{ 95},{  9}},
+{{351},{  9}}, {{223},{  9}}, {{479},{  9}}, {{ 63},{  9}}, {{319},{  9}},
+{{191},{  9}}, {{447},{  9}}, {{127},{  9}}, {{383},{  9}}, {{255},{  9}},
+{{511},{  9}}, {{  0},{  7}}, {{ 64},{  7}}, {{ 32},{  7}}, {{ 96},{  7}},
+{{ 16},{  7}}, {{ 80},{  7}}, {{ 48},{  7}}, {{112},{  7}}, {{  8},{  7}},
+{{ 72},{  7}}, {{ 40},{  7}}, {{104},{  7}}, {{ 24},{  7}}, {{ 88},{  7}},
+{{ 56},{  7}}, {{120},{  7}}, {{  4},{  7}}, {{ 68},{  7}}, {{ 36},{  7}},
+{{100},{  7}}, {{ 20},{  7}}, {{ 84},{  7}}, {{ 52},{  7}}, {{116},{  7}},
+{{  3},{  8}}, {{131},{  8}}, {{ 67},{  8}}, {{195},{  8}}, {{ 35},{  8}},
+{{163},{  8}}, {{ 99},{  8}}, {{227},{  8}}
+};
+
+local const ct_data static_dtree[D_CODES] = {
+{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
+{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
+{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
+{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
+{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
+{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
+};
+
+const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {
+ 0,  1,  2,  3,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,
+ 8,  8,  8,  8,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10, 10, 10,
+10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
+13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,  0,  0, 16, 17,
+18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
+};
+
+const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {
+ 0,  1,  2,  3,  4,  5,  6,  7,  8,  8,  9,  9, 10, 10, 11, 11, 12, 12, 12, 12,
+13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
+17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
+19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
+22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
+};
+
+local const int base_length[LENGTH_CODES] = {
+0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
+64, 80, 96, 112, 128, 160, 192, 224, 0
+};
+
+local const int base_dist[D_CODES] = {
+    0,     1,     2,     3,     4,     6,     8,    12,    16,    24,
+   32,    48,    64,    96,   128,   192,   256,   384,   512,   768,
+ 1024,  1536,  2048,  3072,  4096,  6144,  8192, 12288, 16384, 24576
+};
+
diff --git a/lib/zlib/uncompr.c b/lib/zlib/uncompr.c
new file mode 100644
index 0000000..f9532f4
--- /dev/null
+++ b/lib/zlib/uncompr.c
@@ -0,0 +1,93 @@
+/* uncompr.c -- decompress a memory buffer
+ * Copyright (C) 1995-2003, 2010, 2014, 2016 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+/* ===========================================================================
+     Decompresses the source buffer into the destination buffer.  *sourceLen is
+   the byte length of the source buffer. Upon entry, *destLen is the total size
+   of the destination buffer, which must be large enough to hold the entire
+   uncompressed data. (The size of the uncompressed data must have been saved
+   previously by the compressor and transmitted to the decompressor by some
+   mechanism outside the scope of this compression library.) Upon exit,
+   *destLen is the size of the decompressed data and *sourceLen is the number
+   of source bytes consumed. Upon return, source + *sourceLen points to the
+   first unused input byte.
+
+     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer, or
+   Z_DATA_ERROR if the input data was corrupted, including if the input data is
+   an incomplete zlib stream.
+*/
+int ZEXPORT uncompress2(dest, destLen, source, sourceLen)
+    Bytef *dest;
+    uLongf *destLen;
+    const Bytef *source;
+    uLong *sourceLen;
+{
+    z_stream stream;
+    int err;
+    const uInt max = (uInt)-1;
+    uLong len, left;
+    Byte buf[1];    /* for detection of incomplete stream when *destLen == 0 */
+
+    len = *sourceLen;
+    if (*destLen) {
+        left = *destLen;
+        *destLen = 0;
+    }
+    else {
+        left = 1;
+        dest = buf;
+    }
+
+    stream.next_in = (z_const Bytef *)source;
+    stream.avail_in = 0;
+    stream.zalloc = (alloc_func)0;
+    stream.zfree = (free_func)0;
+    stream.opaque = (voidpf)0;
+
+    err = inflateInit(&stream);
+    if (err != Z_OK) return err;
+
+    stream.next_out = dest;
+    stream.avail_out = 0;
+
+    do {
+        if (stream.avail_out == 0) {
+            stream.avail_out = left > (uLong)max ? max : (uInt)left;
+            left -= stream.avail_out;
+        }
+        if (stream.avail_in == 0) {
+            stream.avail_in = len > (uLong)max ? max : (uInt)len;
+            len -= stream.avail_in;
+        }
+        err = inflate(&stream, Z_NO_FLUSH);
+    } while (err == Z_OK);
+
+    *sourceLen -= len + stream.avail_in;
+    if (dest != buf)
+        *destLen = stream.total_out;
+    else if (stream.total_out && err == Z_BUF_ERROR)
+        left = 1;
+
+    inflateEnd(&stream);
+    return err == Z_STREAM_END ? Z_OK :
+           err == Z_NEED_DICT ? Z_DATA_ERROR  :
+           err == Z_BUF_ERROR && left + stream.avail_out ? Z_DATA_ERROR :
+           err;
+}
+
+int ZEXPORT uncompress(dest, destLen, source, sourceLen)
+    Bytef *dest;
+    uLongf *destLen;
+    const Bytef *source;
+    uLong sourceLen;
+{
+    return uncompress2(dest, destLen, source, &sourceLen);
+}
diff --git a/lib/zlib/zconf.h.in b/lib/zlib/zconf.h.in
new file mode 100644
index 0000000..d23d793
--- /dev/null
+++ b/lib/zlib/zconf.h.in
@@ -0,0 +1,576 @@
+/* zconf.h -- configuration of the zlib compression library
+ * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#ifndef ZCONF_H
+#define ZCONF_H
+
+/* The following four defines are enabled by sudo's configure script. */
+#undef HAVE_FALLTHROUGH_ATTRIBUTE
+#undef HAVE_DSO_VISIBILITY
+#undef HAVE_MEMCPY
+#undef HAVE_UNISTD_H
+#undef HAVE_VSNPRINTF
+#undef _FILE_OFFSET_BITS
+#undef _LARGE_FILES
+#undef const
+
+/* We build sudo and its libs with -fvisibility=hidden where supported. */
+#ifdef HAVE_DSO_VISIBILITY
+# if defined(__GNUC__)
+#  define ZEXTERN extern __attribute__((__visibility__("default")))
+# elif defined(__SUNPRO_C)
+#  define ZEXTERN extern __global
+# elif defined(ZLIB_INTERNAL)
+#  define ZEXTERN extern __declspec(dllexport)
+# else
+#  define ZEXTERN extern __declspec(dllimport)
+# endif
+#endif
+
+#ifdef HAVE_FALLTHROUGH_ATTRIBUTE
+# define ZFALLTHROUGH	__attribute__((__fallthrough__))
+#else
+# define ZFALLTHROUGH	do { } while (0)
+#endif
+
+/*
+ * If you *really* need a unique prefix for all types and library functions,
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+ * Even better than compiling with -DZ_PREFIX would be to use configure to set
+ * this permanently in zconf.h using "./configure --zprefix".
+ */
+#ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
+#  define Z_PREFIX_SET
+
+/* all linked symbols and init macros */
+#  define _dist_code            z__dist_code
+#  define _length_code          z__length_code
+#  define _tr_align             z__tr_align
+#  define _tr_flush_bits        z__tr_flush_bits
+#  define _tr_flush_block       z__tr_flush_block
+#  define _tr_init              z__tr_init
+#  define _tr_stored_block      z__tr_stored_block
+#  define _tr_tally             z__tr_tally
+#  define adler32               z_adler32
+#  define adler32_combine       z_adler32_combine
+#  define adler32_combine64     z_adler32_combine64
+#  define adler32_z             z_adler32_z
+#  ifndef Z_SOLO
+#    define compress              z_compress
+#    define compress2             z_compress2
+#    define compressBound         z_compressBound
+#  endif
+#  define crc32                 z_crc32
+#  define crc32_combine         z_crc32_combine
+#  define crc32_combine64       z_crc32_combine64
+#  define crc32_combine_gen     z_crc32_combine_gen
+#  define crc32_combine_gen64   z_crc32_combine_gen64
+#  define crc32_combine_op      z_crc32_combine_op
+#  define crc32_z               z_crc32_z
+#  define deflate               z_deflate
+#  define deflateBound          z_deflateBound
+#  define deflateCopy           z_deflateCopy
+#  define deflateEnd            z_deflateEnd
+#  define deflateGetDictionary  z_deflateGetDictionary
+#  define deflateInit           z_deflateInit
+#  define deflateInit2          z_deflateInit2
+#  define deflateInit2_         z_deflateInit2_
+#  define deflateInit_          z_deflateInit_
+#  define deflateParams         z_deflateParams
+#  define deflatePending        z_deflatePending
+#  define deflatePrime          z_deflatePrime
+#  define deflateReset          z_deflateReset
+#  define deflateResetKeep      z_deflateResetKeep
+#  define deflateSetDictionary  z_deflateSetDictionary
+#  define deflateSetHeader      z_deflateSetHeader
+#  define deflateTune           z_deflateTune
+#  define deflate_copyright     z_deflate_copyright
+#  define get_crc_table         z_get_crc_table
+#  ifndef Z_SOLO
+#    define gz_error              z_gz_error
+#    define gz_intmax             z_gz_intmax
+#    define gz_strwinerror        z_gz_strwinerror
+#    define gzbuffer              z_gzbuffer
+#    define gzclearerr            z_gzclearerr
+#    define gzclose               z_gzclose
+#    define gzclose_r             z_gzclose_r
+#    define gzclose_w             z_gzclose_w
+#    define gzdirect              z_gzdirect
+#    define gzdopen               z_gzdopen
+#    define gzeof                 z_gzeof
+#    define gzerror               z_gzerror
+#    define gzflush               z_gzflush
+#    define gzfread               z_gzfread
+#    define gzfwrite              z_gzfwrite
+#    define gzgetc                z_gzgetc
+#    define gzgetc_               z_gzgetc_
+#    define gzgets                z_gzgets
+#    define gzoffset              z_gzoffset
+#    define gzoffset64            z_gzoffset64
+#    define gzopen                z_gzopen
+#    define gzopen64              z_gzopen64
+#    ifdef _WIN32
+#      define gzopen_w              z_gzopen_w
+#    endif
+#    define gzprintf              z_gzprintf
+#    define gzputc                z_gzputc
+#    define gzputs                z_gzputs
+#    define gzread                z_gzread
+#    define gzrewind              z_gzrewind
+#    define gzseek                z_gzseek
+#    define gzseek64              z_gzseek64
+#    define gzsetparams           z_gzsetparams
+#    define gztell                z_gztell
+#    define gztell64              z_gztell64
+#    define gzungetc              z_gzungetc
+#    define gzvprintf             z_gzvprintf
+#    define gzwrite               z_gzwrite
+#  endif
+#  define inflate               z_inflate
+#  define inflateBack           z_inflateBack
+#  define inflateBackEnd        z_inflateBackEnd
+#  define inflateBackInit       z_inflateBackInit
+#  define inflateBackInit_      z_inflateBackInit_
+#  define inflateCodesUsed      z_inflateCodesUsed
+#  define inflateCopy           z_inflateCopy
+#  define inflateEnd            z_inflateEnd
+#  define inflateGetDictionary  z_inflateGetDictionary
+#  define inflateGetHeader      z_inflateGetHeader
+#  define inflateInit           z_inflateInit
+#  define inflateInit2          z_inflateInit2
+#  define inflateInit2_         z_inflateInit2_
+#  define inflateInit_          z_inflateInit_
+#  define inflateMark           z_inflateMark
+#  define inflatePrime          z_inflatePrime
+#  define inflateReset          z_inflateReset
+#  define inflateReset2         z_inflateReset2
+#  define inflateResetKeep      z_inflateResetKeep
+#  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateSync           z_inflateSync
+#  define inflateSyncPoint      z_inflateSyncPoint
+#  define inflateUndermine      z_inflateUndermine
+#  define inflateValidate       z_inflateValidate
+#  define inflate_copyright     z_inflate_copyright
+#  define inflate_fast          z_inflate_fast
+#  define inflate_table         z_inflate_table
+#  ifndef Z_SOLO
+#    define uncompress            z_uncompress
+#    define uncompress2           z_uncompress2
+#  endif
+#  define zError                z_zError
+#  ifndef Z_SOLO
+#    define zcalloc               z_zcalloc
+#    define zcfree                z_zcfree
+#  endif
+#  define zlibCompileFlags      z_zlibCompileFlags
+#  define zlibVersion           z_zlibVersion
+
+/* all zlib typedefs in zlib.h and zconf.h */
+#  define Byte                  z_Byte
+#  define Bytef                 z_Bytef
+#  define alloc_func            z_alloc_func
+#  define charf                 z_charf
+#  define free_func             z_free_func
+#  ifndef Z_SOLO
+#    define gzFile                z_gzFile
+#  endif
+#  define gz_header             z_gz_header
+#  define gz_headerp            z_gz_headerp
+#  define in_func               z_in_func
+#  define intf                  z_intf
+#  define out_func              z_out_func
+#  define uInt                  z_uInt
+#  define uIntf                 z_uIntf
+#  define uLong                 z_uLong
+#  define uLongf                z_uLongf
+#  define voidp                 z_voidp
+#  define voidpc                z_voidpc
+#  define voidpf                z_voidpf
+
+/* all zlib structs in zlib.h and zconf.h */
+#  define gz_header_s           z_gz_header_s
+#  define internal_state        z_internal_state
+
+#endif
+
+#if defined(__MSDOS__) && !defined(MSDOS)
+#  define MSDOS
+#endif
+#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
+#  define OS2
+#endif
+#if defined(_WINDOWS) && !defined(WINDOWS)
+#  define WINDOWS
+#endif
+#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
+#  ifndef WIN32
+#    define WIN32
+#  endif
+#endif
+#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
+#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
+#    ifndef SYS16BIT
+#      define SYS16BIT
+#    endif
+#  endif
+#endif
+
+/*
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
+ * than 64k bytes at a time (needed on systems with 16-bit int).
+ */
+#ifdef SYS16BIT
+#  define MAXSEG_64K
+#endif
+#ifdef MSDOS
+#  define UNALIGNED_OK
+#endif
+
+#ifdef __STDC_VERSION__
+#  ifndef STDC
+#    define STDC
+#  endif
+#  if __STDC_VERSION__ >= 199901L
+#    ifndef STDC99
+#      define STDC99
+#    endif
+#  endif
+#endif
+#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
+#  define STDC
+#endif
+
+#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
+#  define STDC
+#endif
+
+#ifndef STDC
+#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
+#    define const       /* note: need a more gentle solution here */
+#  endif
+#endif
+
+#if defined(ZLIB_CONST) && !defined(z_const)
+#  define z_const const
+#else
+#  define z_const
+#endif
+
+#ifdef Z_SOLO
+   typedef unsigned long z_size_t;
+#else
+#  define z_longlong long long
+#  if defined(NO_SIZE_T)
+     typedef unsigned NO_SIZE_T z_size_t;
+#  elif defined(STDC)
+#    include <stddef.h>
+     typedef size_t z_size_t;
+#  else
+     typedef unsigned long z_size_t;
+#  endif
+#  undef z_longlong
+#endif
+
+/* Maximum value for memLevel in deflateInit2 */
+#ifndef MAX_MEM_LEVEL
+#  ifdef MAXSEG_64K
+#    define MAX_MEM_LEVEL 8
+#  else
+#    define MAX_MEM_LEVEL 9
+#  endif
+#endif
+
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
+ * created by gzip. (Files created by minigzip can still be extracted by
+ * gzip.)
+ */
+#ifndef MAX_WBITS
+#  define MAX_WBITS   15 /* 32K LZ77 window */
+#endif
+
+/* The memory requirements for deflate are (in bytes):
+            (1 << (windowBits+2)) +  (1 << (memLevel+9))
+ that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
+ plus a few kilobytes for small objects. For example, if you want to reduce
+ the default memory requirements from 256K to 128K, compile with
+     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
+ Of course this will generally degrade compression (there's no free lunch).
+
+   The memory requirements for inflate are (in bytes) 1 << windowBits
+ that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
+ for small objects.
+*/
+
+                        /* Type declarations */
+
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
+#ifndef Z_ARG /* function prototypes for stdarg */
+#  if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#    define Z_ARG(args)  args
+#  else
+#    define Z_ARG(args)  ()
+#  endif
+#endif
+
+/* The following definitions for FAR are needed only for MSDOS mixed
+ * model programming (small or medium model with some far allocations).
+ * This was tested only with MSC; for other MSDOS compilers you may have
+ * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
+ * just define FAR to be empty.
+ */
+#ifdef SYS16BIT
+#  if defined(M_I86SM) || defined(M_I86MM)
+     /* MSC small or medium model */
+#    define SMALL_MEDIUM
+#    ifdef _MSC_VER
+#      define FAR _far
+#    else
+#      define FAR far
+#    endif
+#  endif
+#  if (defined(__SMALL__) || defined(__MEDIUM__))
+     /* Turbo C small or medium model */
+#    define SMALL_MEDIUM
+#    ifdef __BORLANDC__
+#      define FAR _far
+#    else
+#      define FAR far
+#    endif
+#  endif
+#endif
+
+#if defined(WINDOWS) || defined(WIN32)
+   /* If building or using zlib as a DLL, define ZLIB_DLL.
+    * This is not mandatory, but it offers a little performance increase.
+    */
+#  ifdef ZLIB_DLL
+#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
+#      ifdef ZLIB_INTERNAL
+#        define ZEXTERN extern __declspec(dllexport)
+#      else
+#        define ZEXTERN extern __declspec(dllimport)
+#      endif
+#    endif
+#  endif  /* ZLIB_DLL */
+   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
+    * define ZLIB_WINAPI.
+    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
+    */
+#  ifdef ZLIB_WINAPI
+#    ifdef FAR
+#      undef FAR
+#    endif
+#    ifndef WIN32_LEAN_AND_MEAN
+#      define WIN32_LEAN_AND_MEAN
+#    endif
+#    include <windows.h>
+     /* No need for _export, use ZLIB.DEF instead. */
+     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
+#    define ZEXPORT WINAPI
+#    ifdef WIN32
+#      define ZEXPORTVA WINAPIV
+#    else
+#      define ZEXPORTVA FAR CDECL
+#    endif
+#  endif
+#endif
+
+#if defined (__BEOS__)
+#  ifdef ZLIB_DLL
+#    ifdef ZLIB_INTERNAL
+#      define ZEXPORT   __declspec(dllexport)
+#      define ZEXPORTVA __declspec(dllexport)
+#    else
+#      define ZEXPORT   __declspec(dllimport)
+#      define ZEXPORTVA __declspec(dllimport)
+#    endif
+#  endif
+#endif
+
+#ifndef ZEXTERN
+#  define ZEXTERN extern
+#endif
+#ifndef ZEXPORT
+#  define ZEXPORT
+#endif
+#ifndef ZEXPORTVA
+#  define ZEXPORTVA
+#endif
+
+#ifndef FAR
+#  define FAR
+#endif
+
+#if !defined(__MACTYPES__)
+typedef unsigned char  Byte;  /* 8 bits */
+#endif
+typedef unsigned int   uInt;  /* 16 bits or more */
+typedef unsigned long  uLong; /* 32 bits or more */
+
+#ifdef SMALL_MEDIUM
+   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
+#  define Bytef Byte FAR
+#else
+   typedef Byte  FAR Bytef;
+#endif
+typedef char  FAR charf;
+typedef int   FAR intf;
+typedef uInt  FAR uIntf;
+typedef uLong FAR uLongf;
+
+#ifdef STDC
+   typedef void const *voidpc;
+   typedef void FAR   *voidpf;
+   typedef void       *voidp;
+#else
+   typedef Byte const *voidpc;
+   typedef Byte FAR   *voidpf;
+   typedef Byte       *voidp;
+#endif
+
+#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
+#  include <limits.h>
+#  if (UINT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned
+#  elif (ULONG_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned long
+#  elif (USHRT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned short
+#  endif
+#endif
+
+#ifdef Z_U4
+   typedef Z_U4 z_crc_t;
+#else
+   typedef unsigned long z_crc_t;
+#endif
+
+#ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
+#  define Z_HAVE_UNISTD_H
+#endif
+
+#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
+#  define Z_HAVE_STDARG_H
+#endif
+
+#ifdef STDC
+#  ifndef Z_SOLO
+#    include <sys/types.h>      /* for off_t */
+#  endif
+#endif
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+#    include <stdarg.h>         /* for va_list */
+#  endif
+#endif
+
+#ifdef _WIN32
+#  ifndef Z_SOLO
+#    include <stddef.h>         /* for wchar_t */
+#  endif
+#endif
+
+/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
+ * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
+ * though the former does not conform to the LFS document), but considering
+ * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
+ * equivalently requesting no 64-bit operations
+ */
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
+#  undef _LARGEFILE64_SOURCE
+#endif
+
+#ifndef Z_HAVE_UNISTD_H
+#  ifdef __WATCOMC__
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_HAVE_UNISTD_H
+#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
+#    define Z_HAVE_UNISTD_H
+#  endif
+#endif
+#ifndef Z_SOLO
+#  if defined(Z_HAVE_UNISTD_H)
+#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
+#    ifdef VMS
+#      include <unixio.h>       /* for off_t */
+#    endif
+#    ifndef z_off_t
+#      define z_off_t off_t
+#    endif
+#  endif
+#endif
+
+#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
+#  define Z_LFS64
+#endif
+
+#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
+#  define Z_LARGE64
+#endif
+
+#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
+#  define Z_WANT64
+#endif
+
+#if !defined(SEEK_SET) && !defined(Z_SOLO)
+#  define SEEK_SET        0       /* Seek from beginning of file.  */
+#  define SEEK_CUR        1       /* Seek from current position.  */
+#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
+#endif
+
+#ifndef z_off_t
+#  define z_off_t long
+#endif
+
+#if !defined(_WIN32) && defined(Z_LARGE64)
+#  define z_off64_t off64_t
+#else
+#  if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
+#    define z_off64_t __int64
+#  else
+#    define z_off64_t z_off_t
+#  endif
+#endif
+
+/* MVS linker does not support external names larger than 8 bytes */
+#if defined(__MVS__)
+  #pragma map(deflateInit_,"DEIN")
+  #pragma map(deflateInit2_,"DEIN2")
+  #pragma map(deflateEnd,"DEEND")
+  #pragma map(deflateBound,"DEBND")
+  #pragma map(inflateInit_,"ININ")
+  #pragma map(inflateInit2_,"ININ2")
+  #pragma map(inflateEnd,"INEND")
+  #pragma map(inflateSync,"INSY")
+  #pragma map(inflateSetDictionary,"INSEDI")
+  #pragma map(compressBound,"CMBND")
+  #pragma map(inflate_table,"INTABL")
+  #pragma map(inflate_fast,"INFA")
+  #pragma map(inflate_copyright,"INCOPY")
+#endif
+
+#endif /* ZCONF_H */
diff --git a/lib/zlib/zlib.exp b/lib/zlib/zlib.exp
new file mode 100644
index 0000000..8f43859
--- /dev/null
+++ b/lib/zlib/zlib.exp
@@ -0,0 +1,88 @@
+adler32
+adler32_combine
+adler32_combine64
+adler32_z
+compress
+compress2
+compressBound
+crc32
+crc32_combine
+crc32_combine64
+crc32_combine_gen
+crc32_combine_gen64
+crc32_combine_op
+crc32_z
+deflate
+deflateBound
+deflateCopy
+deflateEnd
+deflateGetDictionary
+deflateInit2_
+deflateInit_
+deflateParams
+deflatePending
+deflatePrime
+deflateReset
+deflateResetKeep
+deflateSetDictionary
+deflateSetHeader
+deflateTune
+get_crc_table
+gzbuffer
+gzclearerr
+gzclose
+gzclose_r
+gzclose_w
+gzdirect
+gzdopen
+gzeof
+gzerror
+gzflush
+gzfread
+gzfwrite
+gzgetc
+gzgetc_
+gzgets
+gzoffset
+gzoffset64
+gzopen
+gzopen64
+gzprintf
+gzputc
+gzputs
+gzread
+gzrewind
+gzseek
+gzseek64
+gzsetparams
+gztell
+gztell64
+gzungetc
+gzvprintf
+gzwrite
+inflate
+inflateBack
+inflateBackEnd
+inflateBackInit_
+inflateCodesUsed
+inflateCopy
+inflateEnd
+inflateGetDictionary
+inflateGetHeader
+inflateInit2_
+inflateInit_
+inflateMark
+inflatePrime
+inflateReset
+inflateReset2
+inflateResetKeep
+inflateSetDictionary
+inflateSync
+inflateSyncPoint
+inflateUndermine
+inflateValidate
+uncompress
+uncompress2
+zError
+zlibCompileFlags
+zlibVersion
diff --git a/lib/zlib/zlib.h b/lib/zlib/zlib.h
new file mode 100644
index 0000000..953cb50
--- /dev/null
+++ b/lib/zlib/zlib.h
@@ -0,0 +1,1935 @@
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.2.13, October 13th, 2022
+
+  Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+
+  The data format used by the zlib library is described by RFCs (Request for
+  Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
+  (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
+*/
+
+#ifndef ZLIB_H
+#define ZLIB_H
+
+#include "zconf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_VERSION "1.2.13"
+#define ZLIB_VERNUM 0x12d0
+#define ZLIB_VER_MAJOR 1
+#define ZLIB_VER_MINOR 2
+#define ZLIB_VER_REVISION 13
+#define ZLIB_VER_SUBREVISION 0
+
+/*
+    The 'zlib' compression library provides in-memory compression and
+  decompression functions, including integrity checks of the uncompressed data.
+  This version of the library supports only one compression method (deflation)
+  but other algorithms will be added later and will have the same stream
+  interface.
+
+    Compression can be done in a single step if the buffers are large enough,
+  or can be done by repeated calls of the compression function.  In the latter
+  case, the application must provide more input and/or consume the output
+  (providing more output space) before each call.
+
+    The compressed data format used by default by the in-memory functions is
+  the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
+  around a deflate stream, which is itself documented in RFC 1951.
+
+    The library also supports reading and writing files in gzip (.gz) format
+  with an interface similar to that of stdio using the functions that start
+  with "gz".  The gzip format is different from the zlib format.  gzip is a
+  gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
+
+    This library can optionally read and write gzip and raw deflate streams in
+  memory as well.
+
+    The zlib format was designed to be compact and fast for use in memory
+  and on communications channels.  The gzip format was designed for single-
+  file compression on file systems, has a larger header than zlib to maintain
+  directory information, and uses a different, slower check method than zlib.
+
+    The library does not install any signal handler.  The decoder checks
+  the consistency of the compressed data, so the library should never crash
+  even in the case of corrupted input.
+*/
+
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
+typedef void   (*free_func)  OF((voidpf opaque, voidpf address));
+
+struct internal_state;
+
+typedef struct z_stream_s {
+    z_const Bytef *next_in;     /* next input byte */
+    uInt     avail_in;  /* number of bytes available at next_in */
+    uLong    total_in;  /* total number of input bytes read so far */
+
+    Bytef    *next_out; /* next output byte will go here */
+    uInt     avail_out; /* remaining free space at next_out */
+    uLong    total_out; /* total number of bytes output so far */
+
+    z_const char *msg;  /* last error message, NULL if no error */
+    struct internal_state FAR *state; /* not visible by applications */
+
+    alloc_func zalloc;  /* used to allocate the internal state */
+    free_func  zfree;   /* used to free the internal state */
+    voidpf     opaque;  /* private data object passed to zalloc and zfree */
+
+    int     data_type;  /* best guess about the data type: binary or text
+                           for deflate, or the decoding state for inflate */
+    uLong   adler;      /* Adler-32 or CRC-32 value of the uncompressed data */
+    uLong   reserved;   /* reserved for future use */
+} z_stream;
+
+typedef z_stream FAR *z_streamp;
+
+/*
+     gzip header information passed to and from zlib routines.  See RFC 1952
+  for more details on the meanings of these fields.
+*/
+typedef struct gz_header_s {
+    int     text;       /* true if compressed data believed to be text */
+    uLong   time;       /* modification time */
+    int     xflags;     /* extra flags (not used when writing a gzip file) */
+    int     os;         /* operating system */
+    Bytef   *extra;     /* pointer to extra field or Z_NULL if none */
+    uInt    extra_len;  /* extra field length (valid if extra != Z_NULL) */
+    uInt    extra_max;  /* space at extra (only when reading header) */
+    Bytef   *name;      /* pointer to zero-terminated file name or Z_NULL */
+    uInt    name_max;   /* space at name (only when reading header) */
+    Bytef   *comment;   /* pointer to zero-terminated comment or Z_NULL */
+    uInt    comm_max;   /* space at comment (only when reading header) */
+    int     hcrc;       /* true if there was or will be a header crc */
+    int     done;       /* true when done reading gzip header (not used
+                           when writing a gzip file) */
+} gz_header;
+
+typedef gz_header FAR *gz_headerp;
+
+/*
+     The application must update next_in and avail_in when avail_in has dropped
+   to zero.  It must update next_out and avail_out when avail_out has dropped
+   to zero.  The application must initialize zalloc, zfree and opaque before
+   calling the init function.  All other fields are set by the compression
+   library and must not be updated by the application.
+
+     The opaque value provided by the application will be passed as the first
+   parameter for calls of zalloc and zfree.  This can be useful for custom
+   memory management.  The compression library attaches no meaning to the
+   opaque value.
+
+     zalloc must return Z_NULL if there is not enough memory for the object.
+   If zlib is used in a multi-threaded application, zalloc and zfree must be
+   thread safe.  In that case, zlib is thread-safe.  When zalloc and zfree are
+   Z_NULL on entry to the initialization function, they are set to internal
+   routines that use the standard library functions malloc() and free().
+
+     On 16-bit systems, the functions zalloc and zfree must be able to allocate
+   exactly 65536 bytes, but will not be required to allocate more than this if
+   the symbol MAXSEG_64K is defined (see zconf.h).  WARNING: On MSDOS, pointers
+   returned by zalloc for objects of exactly 65536 bytes *must* have their
+   offset normalized to zero.  The default allocation function provided by this
+   library ensures this (see zutil.c).  To reduce memory requirements and avoid
+   any allocation of 64K objects, at the expense of compression ratio, compile
+   the library with -DMAX_WBITS=14 (see zconf.h).
+
+     The fields total_in and total_out can be used for statistics or progress
+   reports.  After compression, total_in holds the total size of the
+   uncompressed data and may be saved for use by the decompressor (particularly
+   if the decompressor wants to decompress everything in a single step).
+*/
+
+                        /* constants */
+
+#define Z_NO_FLUSH      0
+#define Z_PARTIAL_FLUSH 1
+#define Z_SYNC_FLUSH    2
+#define Z_FULL_FLUSH    3
+#define Z_FINISH        4
+#define Z_BLOCK         5
+#define Z_TREES         6
+/* Allowed flush values; see deflate() and inflate() below for details */
+
+#define Z_OK            0
+#define Z_STREAM_END    1
+#define Z_NEED_DICT     2
+#define Z_ERRNO        (-1)
+#define Z_STREAM_ERROR (-2)
+#define Z_DATA_ERROR   (-3)
+#define Z_MEM_ERROR    (-4)
+#define Z_BUF_ERROR    (-5)
+#define Z_VERSION_ERROR (-6)
+/* Return codes for the compression/decompression functions. Negative values
+ * are errors, positive values are used for special but normal events.
+ */
+
+#define Z_NO_COMPRESSION         0
+#define Z_BEST_SPEED             1
+#define Z_BEST_COMPRESSION       9
+#define Z_DEFAULT_COMPRESSION  (-1)
+/* compression levels */
+
+#define Z_FILTERED            1
+#define Z_HUFFMAN_ONLY        2
+#define Z_RLE                 3
+#define Z_FIXED               4
+#define Z_DEFAULT_STRATEGY    0
+/* compression strategy; see deflateInit2() below for details */
+
+#define Z_BINARY   0
+#define Z_TEXT     1
+#define Z_ASCII    Z_TEXT   /* for compatibility with 1.2.2 and earlier */
+#define Z_UNKNOWN  2
+/* Possible values of the data_type field for deflate() */
+
+#define Z_DEFLATED   8
+/* The deflate compression method (the only one supported in this version) */
+
+#define Z_NULL  0  /* for initializing zalloc, zfree, opaque */
+
+#define zlib_version zlibVersion()
+/* for compatibility with versions < 1.0.2 */
+
+
+                        /* basic functions */
+
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
+   If the first character differs, the library code actually used is not
+   compatible with the zlib.h header file used by the application.  This check
+   is automatically made by deflateInit and inflateInit.
+ */
+
+/*
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
+
+     Initializes the internal stream state for compression.  The fields
+   zalloc, zfree and opaque must be initialized before by the caller.  If
+   zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
+   allocation functions.
+
+     The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
+   1 gives best speed, 9 gives best compression, 0 gives no compression at all
+   (the input data is simply copied a block at a time).  Z_DEFAULT_COMPRESSION
+   requests a default compromise between speed and compression (currently
+   equivalent to level 6).
+
+     deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if level is not a valid compression level, or
+   Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
+   with the version assumed by the caller (ZLIB_VERSION).  msg is set to null
+   if there is no error message.  deflateInit does not perform any compression:
+   this will be done by deflate().
+*/
+
+
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
+/*
+    deflate compresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full.  It may introduce
+  some output latency (reading input without producing any output) except when
+  forced to flush.
+
+    The detailed semantics are as follows.  deflate performs one or both of the
+  following actions:
+
+  - Compress more input starting at next_in and update next_in and avail_in
+    accordingly.  If not all input can be processed (because there is not
+    enough room in the output buffer), next_in and avail_in are updated and
+    processing will resume at this point for the next call of deflate().
+
+  - Generate more output starting at next_out and update next_out and avail_out
+    accordingly.  This action is forced if the parameter flush is non zero.
+    Forcing flush frequently degrades the compression ratio, so this parameter
+    should be set only when necessary.  Some output may be provided even if
+    flush is zero.
+
+    Before the call of deflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming more
+  output, and updating avail_in or avail_out accordingly; avail_out should
+  never be zero before the call.  The application can consume the compressed
+  output when it wants, for example when the output buffer is full (avail_out
+  == 0), or after each call of deflate().  If deflate returns Z_OK and with
+  zero avail_out, it must be called again after making room in the output
+  buffer because there might be more output pending. See deflatePending(),
+  which can be used if desired to determine whether or not there is more output
+  in that case.
+
+    Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
+  decide how much data to accumulate before producing output, in order to
+  maximize compression.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
+  flushed to the output buffer and the output is aligned on a byte boundary, so
+  that the decompressor can get all input data available so far.  (In
+  particular avail_in is zero after the call if enough output space has been
+  provided before the call.) Flushing may degrade compression for some
+  compression algorithms and so it should be used only when necessary.  This
+  completes the current deflate block and follows it with an empty stored block
+  that is three bits plus filler bits to the next byte, followed by four bytes
+  (00 00 ff ff).
+
+    If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the
+  output buffer, but the output is not aligned to a byte boundary.  All of the
+  input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.
+  This completes the current deflate block and follows it with an empty fixed
+  codes block that is 10 bits long.  This assures that enough bytes are output
+  in order for the decompressor to finish the block before the empty fixed
+  codes block.
+
+    If flush is set to Z_BLOCK, a deflate block is completed and emitted, as
+  for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to
+  seven bits of the current block are held to be written as the next byte after
+  the next deflate block is completed.  In this case, the decompressor may not
+  be provided enough bits at this point in order to complete decompression of
+  the data provided so far to the compressor.  It may need to wait for the next
+  block to be emitted.  This is for advanced applications that need to control
+  the emission of deflate blocks.
+
+    If flush is set to Z_FULL_FLUSH, all output is flushed as with
+  Z_SYNC_FLUSH, and the compression state is reset so that decompression can
+  restart from this point if previous compressed data has been damaged or if
+  random access is desired.  Using Z_FULL_FLUSH too often can seriously degrade
+  compression.
+
+    If deflate returns with avail_out == 0, this function must be called again
+  with the same value of the flush parameter and more output space (updated
+  avail_out), until the flush is complete (deflate returns with non-zero
+  avail_out).  In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
+  avail_out is greater than six to avoid repeated flush markers due to
+  avail_out == 0 on return.
+
+    If the parameter flush is set to Z_FINISH, pending input is processed,
+  pending output is flushed and deflate returns with Z_STREAM_END if there was
+  enough output space.  If deflate returns with Z_OK or Z_BUF_ERROR, this
+  function must be called again with Z_FINISH and more output space (updated
+  avail_out) but no more input data, until it returns with Z_STREAM_END or an
+  error.  After deflate has returned Z_STREAM_END, the only possible operations
+  on the stream are deflateReset or deflateEnd.
+
+    Z_FINISH can be used in the first deflate call after deflateInit if all the
+  compression is to be done in a single step.  In order to complete in one
+  call, avail_out must be at least the value returned by deflateBound (see
+  below).  Then deflate is guaranteed to return Z_STREAM_END.  If not enough
+  output space is provided, deflate will not return Z_STREAM_END, and it must
+  be called again as described above.
+
+    deflate() sets strm->adler to the Adler-32 checksum of all input read
+  so far (that is, total_in bytes).  If a gzip stream is being generated, then
+  strm->adler will be the CRC-32 checksum of the input read so far.  (See
+  deflateInit2 below.)
+
+    deflate() may update strm->data_type if it can make a good guess about
+  the input data type (Z_BINARY or Z_TEXT).  If in doubt, the data is
+  considered binary.  This field is only for information purposes and does not
+  affect the compression algorithm in any manner.
+
+    deflate() returns Z_OK if some progress has been made (more input
+  processed or more output produced), Z_STREAM_END if all input has been
+  consumed and all output has been produced (only when flush is set to
+  Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
+  if next_in or next_out was Z_NULL or the state was inadvertently written over
+  by the application), or Z_BUF_ERROR if no progress is possible (for example
+  avail_in or avail_out was zero).  Note that Z_BUF_ERROR is not fatal, and
+  deflate() can be called again with more input and more output space to
+  continue compressing.
+*/
+
+
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any pending
+   output.
+
+     deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
+   stream state was inconsistent, Z_DATA_ERROR if the stream was freed
+   prematurely (some input or output was discarded).  In the error case, msg
+   may be set but then points to a static string (which must not be
+   deallocated).
+*/
+
+
+/*
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
+
+     Initializes the internal stream state for decompression.  The fields
+   next_in, avail_in, zalloc, zfree and opaque must be initialized before by
+   the caller.  In the current version of inflate, the provided input is not
+   read or consumed.  The allocation of a sliding window will be deferred to
+   the first call of inflate (if the decompression does not complete on the
+   first call).  If zalloc and zfree are set to Z_NULL, inflateInit updates
+   them to use default allocation functions.
+
+     inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
+   version assumed by the caller, or Z_STREAM_ERROR if the parameters are
+   invalid, such as a null pointer to the structure.  msg is set to null if
+   there is no error message.  inflateInit does not perform any decompression.
+   Actual decompression will be done by inflate().  So next_in, and avail_in,
+   next_out, and avail_out are unused and unchanged.  The current
+   implementation of inflateInit() does not process any header information --
+   that is deferred until inflate() is called.
+*/
+
+
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
+/*
+    inflate decompresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full.  It may introduce
+  some output latency (reading input without producing any output) except when
+  forced to flush.
+
+  The detailed semantics are as follows.  inflate performs one or both of the
+  following actions:
+
+  - Decompress more input starting at next_in and update next_in and avail_in
+    accordingly.  If not all input can be processed (because there is not
+    enough room in the output buffer), then next_in and avail_in are updated
+    accordingly, and processing will resume at this point for the next call of
+    inflate().
+
+  - Generate more output starting at next_out and update next_out and avail_out
+    accordingly.  inflate() provides as much output as possible, until there is
+    no more input data or no more space in the output buffer (see below about
+    the flush parameter).
+
+    Before the call of inflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming more
+  output, and updating the next_* and avail_* values accordingly.  If the
+  caller of inflate() does not provide both available input and available
+  output space, it is possible that there will be no progress made.  The
+  application can consume the uncompressed output when it wants, for example
+  when the output buffer is full (avail_out == 0), or after each call of
+  inflate().  If inflate returns Z_OK and with zero avail_out, it must be
+  called again after making room in the output buffer because there might be
+  more output pending.
+
+    The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,
+  Z_BLOCK, or Z_TREES.  Z_SYNC_FLUSH requests that inflate() flush as much
+  output as possible to the output buffer.  Z_BLOCK requests that inflate()
+  stop if and when it gets to the next deflate block boundary.  When decoding
+  the zlib or gzip format, this will cause inflate() to return immediately
+  after the header and before the first block.  When doing a raw inflate,
+  inflate() will go ahead and process the first block, and will return when it
+  gets to the end of that block, or when it runs out of data.
+
+    The Z_BLOCK option assists in appending to or combining deflate streams.
+  To assist in this, on return inflate() always sets strm->data_type to the
+  number of unused bits in the last byte taken from strm->next_in, plus 64 if
+  inflate() is currently decoding the last block in the deflate stream, plus
+  128 if inflate() returned immediately after decoding an end-of-block code or
+  decoding the complete header up to just before the first byte of the deflate
+  stream.  The end-of-block will not be indicated until all of the uncompressed
+  data from that block has been written to strm->next_out.  The number of
+  unused bits may in general be greater than seven, except when bit 7 of
+  data_type is set, in which case the number of unused bits will be less than
+  eight.  data_type is set as noted here every time inflate() returns for all
+  flush options, and so can be used to determine the amount of currently
+  consumed input in bits.
+
+    The Z_TREES option behaves as Z_BLOCK does, but it also returns when the
+  end of each deflate block header is reached, before any actual data in that
+  block is decoded.  This allows the caller to determine the length of the
+  deflate block header for later use in random access within a deflate block.
+  256 is added to the value of strm->data_type when inflate() returns
+  immediately after reaching the end of the deflate block header.
+
+    inflate() should normally be called until it returns Z_STREAM_END or an
+  error.  However if all decompression is to be performed in a single step (a
+  single call of inflate), the parameter flush should be set to Z_FINISH.  In
+  this case all pending input is processed and all pending output is flushed;
+  avail_out must be large enough to hold all of the uncompressed data for the
+  operation to complete.  (The size of the uncompressed data may have been
+  saved by the compressor for this purpose.)  The use of Z_FINISH is not
+  required to perform an inflation in one step.  However it may be used to
+  inform inflate that a faster approach can be used for the single inflate()
+  call.  Z_FINISH also informs inflate to not maintain a sliding window if the
+  stream completes, which reduces inflate's memory footprint.  If the stream
+  does not complete, either because not all of the stream is provided or not
+  enough output space is provided, then a sliding window will be allocated and
+  inflate() can be called again to continue the operation as if Z_NO_FLUSH had
+  been used.
+
+     In this implementation, inflate() always flushes as much output as
+  possible to the output buffer, and always uses the faster approach on the
+  first call.  So the effects of the flush parameter in this implementation are
+  on the return value of inflate() as noted below, when inflate() returns early
+  when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of
+  memory for a sliding window when Z_FINISH is used.
+
+     If a preset dictionary is needed after this call (see inflateSetDictionary
+  below), inflate sets strm->adler to the Adler-32 checksum of the dictionary
+  chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
+  strm->adler to the Adler-32 checksum of all output produced so far (that is,
+  total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
+  below.  At the end of the stream, inflate() checks that its computed Adler-32
+  checksum is equal to that saved by the compressor and returns Z_STREAM_END
+  only if the checksum is correct.
+
+    inflate() can decompress and check either zlib-wrapped or gzip-wrapped
+  deflate data.  The header type is detected automatically, if requested when
+  initializing with inflateInit2().  Any information contained in the gzip
+  header is not retained unless inflateGetHeader() is used.  When processing
+  gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output
+  produced so far.  The CRC-32 is checked against the gzip trailer, as is the
+  uncompressed length, modulo 2^32.
+
+    inflate() returns Z_OK if some progress has been made (more input processed
+  or more output produced), Z_STREAM_END if the end of the compressed data has
+  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
+  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
+  corrupted (input stream not conforming to the zlib format or incorrect check
+  value, in which case strm->msg points to a string with a more specific
+  error), Z_STREAM_ERROR if the stream structure was inconsistent (for example
+  next_in or next_out was Z_NULL, or the state was inadvertently written over
+  by the application), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR
+  if no progress was possible or if there was not enough room in the output
+  buffer when Z_FINISH is used.  Note that Z_BUF_ERROR is not fatal, and
+  inflate() can be called again with more input and more output space to
+  continue decompressing.  If Z_DATA_ERROR is returned, the application may
+  then call inflateSync() to look for a good compression block if a partial
+  recovery of the data is to be attempted.
+*/
+
+
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any pending
+   output.
+
+     inflateEnd returns Z_OK if success, or Z_STREAM_ERROR if the stream state
+   was inconsistent.
+*/
+
+
+                        /* Advanced functions */
+
+/*
+    The following functions are needed only in some special applications.
+*/
+
+/*
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
+                                     int  level,
+                                     int  method,
+                                     int  windowBits,
+                                     int  memLevel,
+                                     int  strategy));
+
+     This is another version of deflateInit with more compression options.  The
+   fields zalloc, zfree and opaque must be initialized before by the caller.
+
+     The method parameter is the compression method.  It must be Z_DEFLATED in
+   this version of the library.
+
+     The windowBits parameter is the base two logarithm of the window size
+   (the size of the history buffer).  It should be in the range 8..15 for this
+   version of the library.  Larger values of this parameter result in better
+   compression at the expense of memory usage.  The default value is 15 if
+   deflateInit is used instead.
+
+     For the current implementation of deflate(), a windowBits value of 8 (a
+   window size of 256 bytes) is not supported.  As a result, a request for 8
+   will result in 9 (a 512-byte window).  In that case, providing 8 to
+   inflateInit2() will result in an error when the zlib header with 9 is
+   checked against the initialization of inflate().  The remedy is to not use 8
+   with deflateInit2() with this initialization, or at least in that case use 9
+   with inflateInit2().
+
+     windowBits can also be -8..-15 for raw deflate.  In this case, -windowBits
+   determines the window size.  deflate() will then generate raw deflate data
+   with no zlib header or trailer, and will not compute a check value.
+
+     windowBits can also be greater than 15 for optional gzip encoding.  Add
+   16 to windowBits to write a simple gzip header and trailer around the
+   compressed data instead of a zlib wrapper.  The gzip header will have no
+   file name, no extra data, no comment, no modification time (set to zero), no
+   header crc, and the operating system will be set to the appropriate value,
+   if the operating system was determined at compile time.  If a gzip stream is
+   being written, strm->adler is a CRC-32 instead of an Adler-32.
+
+     For raw deflate or gzip encoding, a request for a 256-byte window is
+   rejected as invalid, since only the zlib header provides a means of
+   transmitting the window size to the decompressor.
+
+     The memLevel parameter specifies how much memory should be allocated
+   for the internal compression state.  memLevel=1 uses minimum memory but is
+   slow and reduces compression ratio; memLevel=9 uses maximum memory for
+   optimal speed.  The default value is 8.  See zconf.h for total memory usage
+   as a function of windowBits and memLevel.
+
+     The strategy parameter is used to tune the compression algorithm.  Use the
+   value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
+   filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
+   string match), or Z_RLE to limit match distances to one (run-length
+   encoding).  Filtered data consists mostly of small values with a somewhat
+   random distribution.  In this case, the compression algorithm is tuned to
+   compress them better.  The effect of Z_FILTERED is to force more Huffman
+   coding and less string matching; it is somewhat intermediate between
+   Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY.  Z_RLE is designed to be almost as
+   fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data.  The
+   strategy parameter only affects the compression ratio but not the
+   correctness of the compressed output even if it is not set appropriately.
+   Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler
+   decoder for special applications.
+
+     deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid
+   method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is
+   incompatible with the version assumed by the caller (ZLIB_VERSION).  msg is
+   set to null if there is no error message.  deflateInit2 does not perform any
+   compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the compression dictionary from the given byte sequence
+   without producing any compressed output.  When using the zlib format, this
+   function must be called immediately after deflateInit, deflateInit2 or
+   deflateReset, and before any call of deflate.  When doing raw deflate, this
+   function must be called either before any call of deflate, or immediately
+   after the completion of a deflate block, i.e. after all input has been
+   consumed and all output has been delivered when using any of the flush
+   options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH.  The
+   compressor and decompressor must use exactly the same dictionary (see
+   inflateSetDictionary).
+
+     The dictionary should consist of strings (byte sequences) that are likely
+   to be encountered later in the data to be compressed, with the most commonly
+   used strings preferably put towards the end of the dictionary.  Using a
+   dictionary is most useful when the data to be compressed is short and can be
+   predicted with good accuracy; the data can then be compressed better than
+   with the default empty dictionary.
+
+     Depending on the size of the compression data structures selected by
+   deflateInit or deflateInit2, a part of the dictionary may in effect be
+   discarded, for example if the dictionary is larger than the window size
+   provided in deflateInit or deflateInit2.  Thus the strings most likely to be
+   useful should be put at the end of the dictionary, not at the front.  In
+   addition, the current implementation of deflate will use at most the window
+   size minus 262 bytes of the provided dictionary.
+
+     Upon return of this function, strm->adler is set to the Adler-32 value
+   of the dictionary; the decompressor may later use this value to determine
+   which dictionary has been used by the compressor.  (The Adler-32 value
+   applies to the whole dictionary even if only a subset of the dictionary is
+   actually used by the compressor.) If a raw deflate was requested, then the
+   Adler-32 value is not computed and strm->adler is not set.
+
+     deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
+   parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
+   inconsistent (for example if deflate has already been called for this stream
+   or if not at a block boundary for raw deflate).  deflateSetDictionary does
+   not perform any compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateGetDictionary OF((z_streamp strm,
+                                             Bytef *dictionary,
+                                             uInt  *dictLength));
+/*
+     Returns the sliding dictionary being maintained by deflate.  dictLength is
+   set to the number of bytes in the dictionary, and that many bytes are copied
+   to dictionary.  dictionary must have enough space, where 32768 bytes is
+   always enough.  If deflateGetDictionary() is called with dictionary equal to
+   Z_NULL, then only the dictionary length is returned, and nothing is copied.
+   Similarly, if dictLength is Z_NULL, then it is not set.
+
+     deflateGetDictionary() may return a length less than the window size, even
+   when more than the window size in input has been provided. It may return up
+   to 258 bytes less in that case, due to how zlib's implementation of deflate
+   manages the sliding window and lookahead for matches, where matches can be
+   up to 258 bytes long. If the application needs the last window-size bytes of
+   input, then that would need to be saved by the application outside of zlib.
+
+     deflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
+   stream state is inconsistent.
+*/
+
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+                                    z_streamp source));
+/*
+     Sets the destination stream as a complete copy of the source stream.
+
+     This function can be useful when several compression strategies will be
+   tried, for example when there are several ways of pre-processing the input
+   data with a filter.  The streams that will be discarded should then be freed
+   by calling deflateEnd.  Note that deflateCopy duplicates the internal
+   compression state which can be quite large, so this strategy is slow and can
+   consume lots of memory.
+
+     deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+   (such as zalloc being Z_NULL).  msg is left unchanged in both source and
+   destination.
+*/
+
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to deflateEnd followed by deflateInit, but
+   does not free and reallocate the internal compression state.  The stream
+   will leave the compression level and any other attributes that may have been
+   set unchanged.
+
+     deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being Z_NULL).
+*/
+
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+                                      int level,
+                                      int strategy));
+/*
+     Dynamically update the compression level and compression strategy.  The
+   interpretation of level and strategy is as in deflateInit2().  This can be
+   used to switch between compression and straight copy of the input data, or
+   to switch to a different kind of input data requiring a different strategy.
+   If the compression approach (which is a function of the level) or the
+   strategy is changed, and if there have been any deflate() calls since the
+   state was initialized or reset, then the input available so far is
+   compressed with the old level and strategy using deflate(strm, Z_BLOCK).
+   There are three approaches for the compression levels 0, 1..3, and 4..9
+   respectively.  The new level and strategy will take effect at the next call
+   of deflate().
+
+     If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does
+   not have enough output space to complete, then the parameter change will not
+   take effect.  In this case, deflateParams() can be called again with the
+   same parameters and more output space to try again.
+
+     In order to assure a change in the parameters on the first try, the
+   deflate stream should be flushed using deflate() with Z_BLOCK or other flush
+   request until strm.avail_out is not zero, before calling deflateParams().
+   Then no more input data should be provided before the deflateParams() call.
+   If this is done, the old level and strategy will be applied to the data
+   compressed before deflateParams(), and the new level and strategy will be
+   applied to the the data compressed after deflateParams().
+
+     deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream
+   state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if
+   there was not enough output space to complete the compression of the
+   available input data before a change in the strategy or approach.  Note that
+   in the case of a Z_BUF_ERROR, the parameters are not changed.  A return
+   value of Z_BUF_ERROR is not fatal, in which case deflateParams() can be
+   retried with more output space.
+*/
+
+ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
+                                    int good_length,
+                                    int max_lazy,
+                                    int nice_length,
+                                    int max_chain));
+/*
+     Fine tune deflate's internal compression parameters.  This should only be
+   used by someone who understands the algorithm used by zlib's deflate for
+   searching for the best matching string, and even then only by the most
+   fanatic optimizer trying to squeeze out the last compressed bit for their
+   specific input data.  Read the deflate.c source code for the meaning of the
+   max_lazy, good_length, nice_length, and max_chain parameters.
+
+     deflateTune() can be called after deflateInit() or deflateInit2(), and
+   returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
+ */
+
+ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
+                                       uLong sourceLen));
+/*
+     deflateBound() returns an upper bound on the compressed size after
+   deflation of sourceLen bytes.  It must be called after deflateInit() or
+   deflateInit2(), and after deflateSetHeader(), if used.  This would be used
+   to allocate an output buffer for deflation in a single pass, and so would be
+   called before deflate().  If that first deflate() call is provided the
+   sourceLen input bytes, an output buffer allocated to the size returned by
+   deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed
+   to return Z_STREAM_END.  Note that it is possible for the compressed size to
+   be larger than the value returned by deflateBound() if flush options other
+   than Z_FINISH or Z_NO_FLUSH are used.
+*/
+
+ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
+                                       unsigned *pending,
+                                       int *bits));
+/*
+     deflatePending() returns the number of bytes and bits of output that have
+   been generated, but not yet provided in the available output.  The bytes not
+   provided would be due to the available output space having being consumed.
+   The number of bits of output not provided are between 0 and 7, where they
+   await more bits to join them in order to fill out a full byte.  If pending
+   or bits are Z_NULL, then those values are not set.
+
+     deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent.
+ */
+
+ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
+                                     int bits,
+                                     int value));
+/*
+     deflatePrime() inserts bits in the deflate output stream.  The intent
+   is that this function is used to start off the deflate output with the bits
+   leftover from a previous deflate stream when appending to it.  As such, this
+   function can only be used for raw deflate, and must be used before the first
+   deflate() call after a deflateInit2() or deflateReset().  bits must be less
+   than or equal to 16, and that many of the least significant bits of value
+   will be inserted in the output.
+
+     deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
+   room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
+   source stream state was inconsistent.
+*/
+
+ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
+                                         gz_headerp head));
+/*
+     deflateSetHeader() provides gzip header information for when a gzip
+   stream is requested by deflateInit2().  deflateSetHeader() may be called
+   after deflateInit2() or deflateReset() and before the first call of
+   deflate().  The text, time, os, extra field, name, and comment information
+   in the provided gz_header structure are written to the gzip header (xflag is
+   ignored -- the extra flags are set according to the compression level).  The
+   caller must assure that, if not Z_NULL, name and comment are terminated with
+   a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
+   available there.  If hcrc is true, a gzip header crc is included.  Note that
+   the current versions of the command-line version of gzip (up through version
+   1.3.x) do not support header crc's, and will report that it is a "multi-part
+   gzip file" and give up.
+
+     If deflateSetHeader is not used, the default gzip header has text false,
+   the time set to zero, and os set to 255, with no extra, name, or comment
+   fields.  The gzip header is returned to the default state by deflateReset().
+
+     deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent.
+*/
+
+/*
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
+                                     int  windowBits));
+
+     This is another version of inflateInit with an extra parameter.  The
+   fields next_in, avail_in, zalloc, zfree and opaque must be initialized
+   before by the caller.
+
+     The windowBits parameter is the base two logarithm of the maximum window
+   size (the size of the history buffer).  It should be in the range 8..15 for
+   this version of the library.  The default value is 15 if inflateInit is used
+   instead.  windowBits must be greater than or equal to the windowBits value
+   provided to deflateInit2() while compressing, or it must be equal to 15 if
+   deflateInit2() was not used.  If a compressed stream with a larger window
+   size is given as input, inflate() will return with the error code
+   Z_DATA_ERROR instead of trying to allocate a larger window.
+
+     windowBits can also be zero to request that inflate use the window size in
+   the zlib header of the compressed stream.
+
+     windowBits can also be -8..-15 for raw inflate.  In this case, -windowBits
+   determines the window size.  inflate() will then process raw deflate data,
+   not looking for a zlib or gzip header, not generating a check value, and not
+   looking for any check values for comparison at the end of the stream.  This
+   is for use with other formats that use the deflate compressed data format
+   such as zip.  Those formats provide their own check values.  If a custom
+   format is developed using the raw deflate format for compressed data, it is
+   recommended that a check value such as an Adler-32 or a CRC-32 be applied to
+   the uncompressed data as is done in the zlib, gzip, and zip formats.  For
+   most applications, the zlib format should be used as is.  Note that comments
+   above on the use in deflateInit2() applies to the magnitude of windowBits.
+
+     windowBits can also be greater than 15 for optional gzip decoding.  Add
+   32 to windowBits to enable zlib and gzip decoding with automatic header
+   detection, or add 16 to decode only the gzip format (the zlib format will
+   return a Z_DATA_ERROR).  If a gzip stream is being decoded, strm->adler is a
+   CRC-32 instead of an Adler-32.  Unlike the gunzip utility and gzread() (see
+   below), inflate() will *not* automatically decode concatenated gzip members.
+   inflate() will return Z_STREAM_END at the end of the gzip member.  The state
+   would need to be reset to continue decoding a subsequent gzip member.  This
+   *must* be done if there is more data after a gzip member, in order for the
+   decompression to be compliant with the gzip standard (RFC 1952).
+
+     inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
+   version assumed by the caller, or Z_STREAM_ERROR if the parameters are
+   invalid, such as a null pointer to the structure.  msg is set to null if
+   there is no error message.  inflateInit2 does not perform any decompression
+   apart from possibly reading the zlib header if present: actual decompression
+   will be done by inflate().  (So next_in and avail_in may be modified, but
+   next_out and avail_out are unused and unchanged.) The current implementation
+   of inflateInit2() does not process any header information -- that is
+   deferred until inflate() is called.
+*/
+
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the decompression dictionary from the given uncompressed byte
+   sequence.  This function must be called immediately after a call of inflate,
+   if that call returned Z_NEED_DICT.  The dictionary chosen by the compressor
+   can be determined from the Adler-32 value returned by that call of inflate.
+   The compressor and decompressor must use exactly the same dictionary (see
+   deflateSetDictionary).  For raw inflate, this function can be called at any
+   time to set the dictionary.  If the provided dictionary is smaller than the
+   window and there is already data in the window, then the provided dictionary
+   will amend what's there.  The application must insure that the dictionary
+   that was used for compression is provided.
+
+     inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
+   parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
+   inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
+   expected one (incorrect Adler-32 value).  inflateSetDictionary does not
+   perform any decompression: this will be done by subsequent calls of
+   inflate().
+*/
+
+ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
+                                             Bytef *dictionary,
+                                             uInt  *dictLength));
+/*
+     Returns the sliding dictionary being maintained by inflate.  dictLength is
+   set to the number of bytes in the dictionary, and that many bytes are copied
+   to dictionary.  dictionary must have enough space, where 32768 bytes is
+   always enough.  If inflateGetDictionary() is called with dictionary equal to
+   Z_NULL, then only the dictionary length is returned, and nothing is copied.
+   Similarly, if dictLength is Z_NULL, then it is not set.
+
+     inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
+   stream state is inconsistent.
+*/
+
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
+/*
+     Skips invalid compressed data until a possible full flush point (see above
+   for the description of deflate with Z_FULL_FLUSH) can be found, or until all
+   available input is skipped.  No output is provided.
+
+     inflateSync searches for a 00 00 FF FF pattern in the compressed data.
+   All full flush points have this pattern, but not all occurrences of this
+   pattern are full flush points.
+
+     inflateSync returns Z_OK if a possible full flush point has been found,
+   Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
+   has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
+   In the success case, the application may save the current current value of
+   total_in which indicates where valid compressed data was found.  In the
+   error case, the application may repeatedly call inflateSync, providing more
+   input each time, until success or end of the input data.
+*/
+
+ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
+                                    z_streamp source));
+/*
+     Sets the destination stream as a complete copy of the source stream.
+
+     This function can be useful when randomly accessing a large stream.  The
+   first pass through the stream can periodically record the inflate state,
+   allowing restarting inflate at those points when randomly accessing the
+   stream.
+
+     inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+   (such as zalloc being Z_NULL).  msg is left unchanged in both source and
+   destination.
+*/
+
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to inflateEnd followed by inflateInit,
+   but does not free and reallocate the internal decompression state.  The
+   stream will keep attributes that may have been set by inflateInit2.
+
+     inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being Z_NULL).
+*/
+
+ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
+                                      int windowBits));
+/*
+     This function is the same as inflateReset, but it also permits changing
+   the wrap and window size requests.  The windowBits parameter is interpreted
+   the same as it is for inflateInit2.  If the window size is changed, then the
+   memory allocated for the window is freed, and the window will be reallocated
+   by inflate() if needed.
+
+     inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being Z_NULL), or if
+   the windowBits parameter is invalid.
+*/
+
+ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
+                                     int bits,
+                                     int value));
+/*
+     This function inserts bits in the inflate input stream.  The intent is
+   that this function is used to start inflating at a bit position in the
+   middle of a byte.  The provided bits will be used before any bytes are used
+   from next_in.  This function should only be used with raw inflate, and
+   should be used before the first inflate() call after inflateInit2() or
+   inflateReset().  bits must be less than or equal to 16, and that many of the
+   least significant bits of value will be inserted in the input.
+
+     If bits is negative, then the input stream bit buffer is emptied.  Then
+   inflatePrime() can be called again to put bits in the buffer.  This is used
+   to clear out bits leftover after feeding inflate a block description prior
+   to feeding inflate codes.
+
+     inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent.
+*/
+
+ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
+/*
+     This function returns two values, one in the lower 16 bits of the return
+   value, and the other in the remaining upper bits, obtained by shifting the
+   return value down 16 bits.  If the upper value is -1 and the lower value is
+   zero, then inflate() is currently decoding information outside of a block.
+   If the upper value is -1 and the lower value is non-zero, then inflate is in
+   the middle of a stored block, with the lower value equaling the number of
+   bytes from the input remaining to copy.  If the upper value is not -1, then
+   it is the number of bits back from the current bit position in the input of
+   the code (literal or length/distance pair) currently being processed.  In
+   that case the lower value is the number of bytes already emitted for that
+   code.
+
+     A code is being processed if inflate is waiting for more input to complete
+   decoding of the code, or if it has completed decoding but is waiting for
+   more output space to write the literal or match data.
+
+     inflateMark() is used to mark locations in the input data for random
+   access, which may be at bit positions, and to note those cases where the
+   output of a code may span boundaries of random access blocks.  The current
+   location in the input stream can be determined from avail_in and data_type
+   as noted in the description for the Z_BLOCK flush parameter for inflate.
+
+     inflateMark returns the value noted above, or -65536 if the provided
+   source stream state was inconsistent.
+*/
+
+ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
+                                         gz_headerp head));
+/*
+     inflateGetHeader() requests that gzip header information be stored in the
+   provided gz_header structure.  inflateGetHeader() may be called after
+   inflateInit2() or inflateReset(), and before the first call of inflate().
+   As inflate() processes the gzip stream, head->done is zero until the header
+   is completed, at which time head->done is set to one.  If a zlib stream is
+   being decoded, then head->done is set to -1 to indicate that there will be
+   no gzip header information forthcoming.  Note that Z_BLOCK or Z_TREES can be
+   used to force inflate() to return immediately after header processing is
+   complete and before any actual data is decompressed.
+
+     The text, time, xflags, and os fields are filled in with the gzip header
+   contents.  hcrc is set to true if there is a header CRC.  (The header CRC
+   was valid if done is set to one.) If extra is not Z_NULL, then extra_max
+   contains the maximum number of bytes to write to extra.  Once done is true,
+   extra_len contains the actual extra field length, and extra contains the
+   extra field, or that field truncated if extra_max is less than extra_len.
+   If name is not Z_NULL, then up to name_max characters are written there,
+   terminated with a zero unless the length is greater than name_max.  If
+   comment is not Z_NULL, then up to comm_max characters are written there,
+   terminated with a zero unless the length is greater than comm_max.  When any
+   of extra, name, or comment are not Z_NULL and the respective field is not
+   present in the header, then that field is set to Z_NULL to signal its
+   absence.  This allows the use of deflateSetHeader() with the returned
+   structure to duplicate the header.  However if those fields are set to
+   allocated memory, then the application will need to save those pointers
+   elsewhere so that they can be eventually freed.
+
+     If inflateGetHeader is not used, then the header information is simply
+   discarded.  The header is always checked for validity, including the header
+   CRC if present.  inflateReset() will reset the process to discard the header
+   information.  The application would need to call inflateGetHeader() again to
+   retrieve the header from the next gzip stream.
+
+     inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent.
+*/
+
+/*
+ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
+                                        unsigned char FAR *window));
+
+     Initialize the internal stream state for decompression using inflateBack()
+   calls.  The fields zalloc, zfree and opaque in strm must be initialized
+   before the call.  If zalloc and zfree are Z_NULL, then the default library-
+   derived memory allocation routines are used.  windowBits is the base two
+   logarithm of the window size, in the range 8..15.  window is a caller
+   supplied buffer of that size.  Except for special applications where it is
+   assured that deflate was used with small window sizes, windowBits must be 15
+   and a 32K byte window must be supplied to be able to decompress general
+   deflate streams.
+
+     See inflateBack() for the usage of these routines.
+
+     inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
+   the parameters are invalid, Z_MEM_ERROR if the internal state could not be
+   allocated, or Z_VERSION_ERROR if the version of the library does not match
+   the version of the header file.
+*/
+
+typedef unsigned (*in_func) OF((void FAR *,
+                                z_const unsigned char FAR * FAR *));
+typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
+
+ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
+                                    in_func in, void FAR *in_desc,
+                                    out_func out, void FAR *out_desc));
+/*
+     inflateBack() does a raw inflate with a single call using a call-back
+   interface for input and output.  This is potentially more efficient than
+   inflate() for file i/o applications, in that it avoids copying between the
+   output and the sliding window by simply making the window itself the output
+   buffer.  inflate() can be faster on modern CPUs when used with large
+   buffers.  inflateBack() trusts the application to not change the output
+   buffer passed by the output function, at least until inflateBack() returns.
+
+     inflateBackInit() must be called first to allocate the internal state
+   and to initialize the state with the user-provided window buffer.
+   inflateBack() may then be used multiple times to inflate a complete, raw
+   deflate stream with each call.  inflateBackEnd() is then called to free the
+   allocated state.
+
+     A raw deflate stream is one with no zlib or gzip header or trailer.
+   This routine would normally be used in a utility that reads zip or gzip
+   files and writes out uncompressed files.  The utility would decode the
+   header and process the trailer on its own, hence this routine expects only
+   the raw deflate stream to decompress.  This is different from the default
+   behavior of inflate(), which expects a zlib header and trailer around the
+   deflate stream.
+
+     inflateBack() uses two subroutines supplied by the caller that are then
+   called by inflateBack() for input and output.  inflateBack() calls those
+   routines until it reads a complete deflate stream and writes out all of the
+   uncompressed data, or until it encounters an error.  The function's
+   parameters and return types are defined above in the in_func and out_func
+   typedefs.  inflateBack() will call in(in_desc, &buf) which should return the
+   number of bytes of provided input, and a pointer to that input in buf.  If
+   there is no input available, in() must return zero -- buf is ignored in that
+   case -- and inflateBack() will return a buffer error.  inflateBack() will
+   call out(out_desc, buf, len) to write the uncompressed data buf[0..len-1].
+   out() should return zero on success, or non-zero on failure.  If out()
+   returns non-zero, inflateBack() will return with an error.  Neither in() nor
+   out() are permitted to change the contents of the window provided to
+   inflateBackInit(), which is also the buffer that out() uses to write from.
+   The length written by out() will be at most the window size.  Any non-zero
+   amount of input may be provided by in().
+
+     For convenience, inflateBack() can be provided input on the first call by
+   setting strm->next_in and strm->avail_in.  If that input is exhausted, then
+   in() will be called.  Therefore strm->next_in must be initialized before
+   calling inflateBack().  If strm->next_in is Z_NULL, then in() will be called
+   immediately for input.  If strm->next_in is not Z_NULL, then strm->avail_in
+   must also be initialized, and then if strm->avail_in is not zero, input will
+   initially be taken from strm->next_in[0 ..  strm->avail_in - 1].
+
+     The in_desc and out_desc parameters of inflateBack() is passed as the
+   first parameter of in() and out() respectively when they are called.  These
+   descriptors can be optionally used to pass any information that the caller-
+   supplied in() and out() functions need to do their job.
+
+     On return, inflateBack() will set strm->next_in and strm->avail_in to
+   pass back any unused input that was provided by the last in() call.  The
+   return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
+   if in() or out() returned an error, Z_DATA_ERROR if there was a format error
+   in the deflate stream (in which case strm->msg is set to indicate the nature
+   of the error), or Z_STREAM_ERROR if the stream was not properly initialized.
+   In the case of Z_BUF_ERROR, an input or output error can be distinguished
+   using strm->next_in which will be Z_NULL only if in() returned an error.  If
+   strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
+   non-zero.  (in() will always be called before out(), so strm->next_in is
+   assured to be defined if out() returns non-zero.)  Note that inflateBack()
+   cannot return Z_OK.
+*/
+
+ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
+/*
+     All memory allocated by inflateBackInit() is freed.
+
+     inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
+   state was inconsistent.
+*/
+
+ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
+/* Return flags indicating compile-time options.
+
+    Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
+     1.0: size of uInt
+     3.2: size of uLong
+     5.4: size of voidpf (pointer)
+     7.6: size of z_off_t
+
+    Compiler, assembler, and debug options:
+     8: ZLIB_DEBUG
+     9: ASMV or ASMINF -- use ASM code
+     10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
+     11: 0 (reserved)
+
+    One-time table building (smaller code, but not thread-safe if true):
+     12: BUILDFIXED -- build static block decoding tables when needed
+     13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
+     14,15: 0 (reserved)
+
+    Library content (indicates missing functionality):
+     16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
+                          deflate code when not needed)
+     17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
+                    and decode gzip streams (to avoid linking crc code)
+     18-19: 0 (reserved)
+
+    Operation variations (changes in library functionality):
+     20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
+     21: FASTEST -- deflate algorithm with only one, lowest compression level
+     22,23: 0 (reserved)
+
+    The sprintf variant used by gzprintf (zero is best):
+     24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
+     25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
+     26: 0 = returns value, 1 = void -- 1 means inferred string length returned
+
+    Remainder:
+     27-31: 0 (reserved)
+ */
+
+#ifndef Z_SOLO
+
+                        /* utility functions */
+
+/*
+     The following utility functions are implemented on top of the basic
+   stream-oriented functions.  To simplify the interface, some default options
+   are assumed (compression level and memory usage, standard memory allocation
+   functions).  The source code of these utility functions can be modified if
+   you need special options.
+*/
+
+ZEXTERN int ZEXPORT compress OF((Bytef *dest,   uLongf *destLen,
+                                 const Bytef *source, uLong sourceLen));
+/*
+     Compresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer.  Upon entry, destLen is the total size
+   of the destination buffer, which must be at least the value returned by
+   compressBound(sourceLen).  Upon exit, destLen is the actual size of the
+   compressed data.  compress() is equivalent to compress2() with a level
+   parameter of Z_DEFAULT_COMPRESSION.
+
+     compress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer.
+*/
+
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest,   uLongf *destLen,
+                                  const Bytef *source, uLong sourceLen,
+                                  int level));
+/*
+     Compresses the source buffer into the destination buffer.  The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer.  Upon entry, destLen is the total size of the
+   destination buffer, which must be at least the value returned by
+   compressBound(sourceLen).  Upon exit, destLen is the actual size of the
+   compressed data.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+
+ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
+/*
+     compressBound() returns an upper bound on the compressed size after
+   compress() or compress2() on sourceLen bytes.  It would be used before a
+   compress() or compress2() call to allocate the destination buffer.
+*/
+
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest,   uLongf *destLen,
+                                   const Bytef *source, uLong sourceLen));
+/*
+     Decompresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer.  Upon entry, destLen is the total size
+   of the destination buffer, which must be large enough to hold the entire
+   uncompressed data.  (The size of the uncompressed data must have been saved
+   previously by the compressor and transmitted to the decompressor by some
+   mechanism outside the scope of this compression library.) Upon exit, destLen
+   is the actual size of the uncompressed data.
+
+     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.  In
+   the case where there is not enough room, uncompress() will fill the output
+   buffer with the uncompressed data up to that point.
+*/
+
+ZEXTERN int ZEXPORT uncompress2 OF((Bytef *dest,   uLongf *destLen,
+                                    const Bytef *source, uLong *sourceLen));
+/*
+     Same as uncompress, except that sourceLen is a pointer, where the
+   length of the source is *sourceLen.  On return, *sourceLen is the number of
+   source bytes consumed.
+*/
+
+                        /* gzip file access functions */
+
+/*
+     This library supports reading and writing files in gzip (.gz) format with
+   an interface similar to that of stdio, using the functions that start with
+   "gz".  The gzip format is different from the zlib format.  gzip is a gzip
+   wrapper, documented in RFC 1952, wrapped around a deflate stream.
+*/
+
+typedef struct gzFile_s *gzFile;    /* semi-opaque gzip file descriptor */
+
+/*
+ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
+
+     Open the gzip (.gz) file at path for reading and decompressing, or
+   compressing and writing.  The mode parameter is as in fopen ("rb" or "wb")
+   but can also include a compression level ("wb9") or a strategy: 'f' for
+   filtered data as in "wb6f", 'h' for Huffman-only compression as in "wb1h",
+   'R' for run-length encoding as in "wb1R", or 'F' for fixed code compression
+   as in "wb9F".  (See the description of deflateInit2 for more information
+   about the strategy parameter.)  'T' will request transparent writing or
+   appending with no compression and not using the gzip format.
+
+     "a" can be used instead of "w" to request that the gzip stream that will
+   be written be appended to the file.  "+" will result in an error, since
+   reading and writing to the same gzip file is not supported.  The addition of
+   "x" when writing will create the file exclusively, which fails if the file
+   already exists.  On systems that support it, the addition of "e" when
+   reading or writing will set the flag to close the file on an execve() call.
+
+     These functions, as well as gzip, will read and decode a sequence of gzip
+   streams in a file.  The append function of gzopen() can be used to create
+   such a file.  (Also see gzflush() for another way to do this.)  When
+   appending, gzopen does not test whether the file begins with a gzip stream,
+   nor does it look for the end of the gzip streams to begin appending.  gzopen
+   will simply append a gzip stream to the existing file.
+
+     gzopen can be used to read a file which is not in gzip format; in this
+   case gzread will directly read from the file without decompression.  When
+   reading, this will be detected automatically by looking for the magic two-
+   byte gzip header.
+
+     gzopen returns NULL if the file could not be opened, if there was
+   insufficient memory to allocate the gzFile state, or if an invalid mode was
+   specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).
+   errno can be checked to determine if the reason gzopen failed was that the
+   file could not be opened.
+*/
+
+ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
+/*
+     Associate a gzFile with the file descriptor fd.  File descriptors are
+   obtained from calls like open, dup, creat, pipe or fileno (if the file has
+   been previously opened with fopen).  The mode parameter is as in gzopen.
+
+     The next call of gzclose on the returned gzFile will also close the file
+   descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
+   fd.  If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
+   mode);.  The duplicated descriptor should be saved to avoid a leak, since
+   gzdopen does not close fd if it fails.  If you are using fileno() to get the
+   file descriptor from a FILE *, then you will have to use dup() to avoid
+   double-close()ing the file descriptor.  Both gzclose() and fclose() will
+   close the associated file descriptor, so they need to have different file
+   descriptors.
+
+     gzdopen returns NULL if there was insufficient memory to allocate the
+   gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
+   provided, or '+' was provided), or if fd is -1.  The file descriptor is not
+   used until the next gz* read, write, seek, or close operation, so gzdopen
+   will not detect if fd is invalid (unless fd is -1).
+*/
+
+ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
+/*
+     Set the internal buffer size used by this library's functions for file to
+   size.  The default buffer size is 8192 bytes.  This function must be called
+   after gzopen() or gzdopen(), and before any other calls that read or write
+   the file.  The buffer memory allocation is always deferred to the first read
+   or write.  Three times that size in buffer space is allocated.  A larger
+   buffer size of, for example, 64K or 128K bytes will noticeably increase the
+   speed of decompression (reading).
+
+     The new buffer size also affects the maximum length for gzprintf().
+
+     gzbuffer() returns 0 on success, or -1 on failure, such as being called
+   too late.
+*/
+
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
+/*
+     Dynamically update the compression level and strategy for file.  See the
+   description of deflateInit2 for the meaning of these parameters. Previously
+   provided data is flushed before applying the parameter changes.
+
+     gzsetparams returns Z_OK if success, Z_STREAM_ERROR if the file was not
+   opened for writing, Z_ERRNO if there is an error writing the flushed data,
+   or Z_MEM_ERROR if there is a memory allocation error.
+*/
+
+ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
+/*
+     Read and decompress up to len uncompressed bytes from file into buf.  If
+   the input file is not in gzip format, gzread copies the given number of
+   bytes into the buffer directly from the file.
+
+     After reaching the end of a gzip stream in the input, gzread will continue
+   to read, looking for another gzip stream.  Any number of gzip streams may be
+   concatenated in the input file, and will all be decompressed by gzread().
+   If something other than a gzip stream is encountered after a gzip stream,
+   that remaining trailing garbage is ignored (and no error is returned).
+
+     gzread can be used to read a gzip file that is being concurrently written.
+   Upon reaching the end of the input, gzread will return with the available
+   data.  If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then
+   gzclearerr can be used to clear the end of file indicator in order to permit
+   gzread to be tried again.  Z_OK indicates that a gzip stream was completed
+   on the last gzread.  Z_BUF_ERROR indicates that the input file ended in the
+   middle of a gzip stream.  Note that gzread does not return -1 in the event
+   of an incomplete gzip stream.  This error is deferred until gzclose(), which
+   will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip
+   stream.  Alternatively, gzerror can be used before gzclose to detect this
+   case.
+
+     gzread returns the number of uncompressed bytes actually read, less than
+   len for end of file, or -1 for error.  If len is too large to fit in an int,
+   then nothing is read, -1 is returned, and the error state is set to
+   Z_STREAM_ERROR.
+*/
+
+ZEXTERN z_size_t ZEXPORT gzfread OF((voidp buf, z_size_t size, z_size_t nitems,
+                                     gzFile file));
+/*
+     Read and decompress up to nitems items of size size from file into buf,
+   otherwise operating as gzread() does.  This duplicates the interface of
+   stdio's fread(), with size_t request and return types.  If the library
+   defines size_t, then z_size_t is identical to size_t.  If not, then z_size_t
+   is an unsigned integer type that can contain a pointer.
+
+     gzfread() returns the number of full items read of size size, or zero if
+   the end of the file was reached and a full item could not be read, or if
+   there was an error.  gzerror() must be consulted if zero is returned in
+   order to determine if there was an error.  If the multiplication of size and
+   nitems overflows, i.e. the product does not fit in a z_size_t, then nothing
+   is read, zero is returned, and the error state is set to Z_STREAM_ERROR.
+
+     In the event that the end of file is reached and only a partial item is
+   available at the end, i.e. the remaining uncompressed data length is not a
+   multiple of size, then the final partial item is nevertheless read into buf
+   and the end-of-file flag is set.  The length of the partial item read is not
+   provided, but could be inferred from the result of gztell().  This behavior
+   is the same as the behavior of fread() implementations in common libraries,
+   but it prevents the direct use of gzfread() to read a concurrently written
+   file, resetting and retrying on end-of-file, when size is not 1.
+*/
+
+ZEXTERN int ZEXPORT gzwrite OF((gzFile file, voidpc buf, unsigned len));
+/*
+     Compress and write the len uncompressed bytes at buf to file. gzwrite
+   returns the number of uncompressed bytes written or 0 in case of error.
+*/
+
+ZEXTERN z_size_t ZEXPORT gzfwrite OF((voidpc buf, z_size_t size,
+                                      z_size_t nitems, gzFile file));
+/*
+     Compress and write nitems items of size size from buf to file, duplicating
+   the interface of stdio's fwrite(), with size_t request and return types.  If
+   the library defines size_t, then z_size_t is identical to size_t.  If not,
+   then z_size_t is an unsigned integer type that can contain a pointer.
+
+     gzfwrite() returns the number of full items written of size size, or zero
+   if there was an error.  If the multiplication of size and nitems overflows,
+   i.e. the product does not fit in a z_size_t, then nothing is written, zero
+   is returned, and the error state is set to Z_STREAM_ERROR.
+*/
+
+ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
+/*
+     Convert, format, compress, and write the arguments (...) to file under
+   control of the string format, as in fprintf.  gzprintf returns the number of
+   uncompressed bytes actually written, or a negative zlib error code in case
+   of error.  The number of uncompressed bytes written is limited to 8191, or
+   one less than the buffer size given to gzbuffer().  The caller should assure
+   that this limit is not exceeded.  If it is exceeded, then gzprintf() will
+   return an error (0) with nothing written.  In this case, there may also be a
+   buffer overflow with unpredictable consequences, which is possible only if
+   zlib was compiled with the insecure functions sprintf() or vsprintf(),
+   because the secure snprintf() or vsnprintf() functions were not available.
+   This can be determined using zlibCompileFlags().
+*/
+
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
+/*
+     Compress and write the given null-terminated string s to file, excluding
+   the terminating null character.
+
+     gzputs returns the number of characters written, or -1 in case of error.
+*/
+
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
+/*
+     Read and decompress bytes from file into buf, until len-1 characters are
+   read, or until a newline character is read and transferred to buf, or an
+   end-of-file condition is encountered.  If any characters are read or if len
+   is one, the string is terminated with a null character.  If no characters
+   are read due to an end-of-file or len is less than one, then the buffer is
+   left untouched.
+
+     gzgets returns buf which is a null-terminated string, or it returns NULL
+   for end-of-file or in case of error.  If there was an error, the contents at
+   buf are indeterminate.
+*/
+
+ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
+/*
+     Compress and write c, converted to an unsigned char, into file.  gzputc
+   returns the value that was written, or -1 in case of error.
+*/
+
+ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
+/*
+     Read and decompress one byte from file.  gzgetc returns this byte or -1
+   in case of end of file or error.  This is implemented as a macro for speed.
+   As such, it does not do all of the checking the other functions do.  I.e.
+   it does not check to see if file is NULL, nor whether the structure file
+   points to has been clobbered or not.
+*/
+
+ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
+/*
+     Push c back onto the stream for file to be read as the first character on
+   the next read.  At least one character of push-back is always allowed.
+   gzungetc() returns the character pushed, or -1 on failure.  gzungetc() will
+   fail if c is -1, and may fail if a character has been pushed but not read
+   yet.  If gzungetc is used immediately after gzopen or gzdopen, at least the
+   output buffer size of pushed characters is allowed.  (See gzbuffer above.)
+   The pushed character will be discarded if the stream is repositioned with
+   gzseek() or gzrewind().
+*/
+
+ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
+/*
+     Flush all pending output to file.  The parameter flush is as in the
+   deflate() function.  The return value is the zlib error number (see function
+   gzerror below).  gzflush is only permitted when writing.
+
+     If the flush parameter is Z_FINISH, the remaining data is written and the
+   gzip stream is completed in the output.  If gzwrite() is called again, a new
+   gzip stream will be started in the output.  gzread() is able to read such
+   concatenated gzip streams.
+
+     gzflush should be called only when strictly necessary because it will
+   degrade compression if called too often.
+*/
+
+/*
+ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
+                                   z_off_t offset, int whence));
+
+     Set the starting position to offset relative to whence for the next gzread
+   or gzwrite on file.  The offset represents a number of bytes in the
+   uncompressed data stream.  The whence parameter is defined as in lseek(2);
+   the value SEEK_END is not supported.
+
+     If the file is opened for reading, this function is emulated but can be
+   extremely slow.  If the file is opened for writing, only forward seeks are
+   supported; gzseek then compresses a sequence of zeroes up to the new
+   starting position.
+
+     gzseek returns the resulting offset location as measured in bytes from
+   the beginning of the uncompressed stream, or -1 in case of error, in
+   particular if the file is opened for writing and the new starting position
+   would be before the current position.
+*/
+
+ZEXTERN int ZEXPORT    gzrewind OF((gzFile file));
+/*
+     Rewind file. This function is supported only for reading.
+
+     gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET).
+*/
+
+/*
+ZEXTERN z_off_t ZEXPORT    gztell OF((gzFile file));
+
+     Return the starting position for the next gzread or gzwrite on file.
+   This position represents a number of bytes in the uncompressed data stream,
+   and is zero when starting, even if appending or reading a gzip stream from
+   the middle of a file using gzdopen().
+
+     gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
+*/
+
+/*
+ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
+
+     Return the current compressed (actual) read or write offset of file.  This
+   offset includes the count of bytes that precede the gzip stream, for example
+   when appending or when using gzdopen() for reading.  When reading, the
+   offset does not include as yet unused buffered input.  This information can
+   be used for a progress indicator.  On error, gzoffset() returns -1.
+*/
+
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));
+/*
+     Return true (1) if the end-of-file indicator for file has been set while
+   reading, false (0) otherwise.  Note that the end-of-file indicator is set
+   only if the read tried to go past the end of the input, but came up short.
+   Therefore, just like feof(), gzeof() may return false even if there is no
+   more data to read, in the event that the last read request was for the exact
+   number of bytes remaining in the input file.  This will happen if the input
+   file size is an exact multiple of the buffer size.
+
+     If gzeof() returns true, then the read functions will return no more data,
+   unless the end-of-file indicator is reset by gzclearerr() and the input file
+   has grown since the previous end of file was detected.
+*/
+
+ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
+/*
+     Return true (1) if file is being copied directly while reading, or false
+   (0) if file is a gzip stream being decompressed.
+
+     If the input file is empty, gzdirect() will return true, since the input
+   does not contain a gzip stream.
+
+     If gzdirect() is used immediately after gzopen() or gzdopen() it will
+   cause buffers to be allocated to allow reading the file to determine if it
+   is a gzip file.  Therefore if gzbuffer() is used, it should be called before
+   gzdirect().
+
+     When writing, gzdirect() returns true (1) if transparent writing was
+   requested ("wT" for the gzopen() mode), or false (0) otherwise.  (Note:
+   gzdirect() is not needed when writing.  Transparent writing must be
+   explicitly requested, so the application already knows the answer.  When
+   linking statically, using gzdirect() will include all of the zlib code for
+   gzip file reading and decompression, which may not be desired.)
+*/
+
+ZEXTERN int ZEXPORT    gzclose OF((gzFile file));
+/*
+     Flush all pending output for file, if necessary, close file and
+   deallocate the (de)compression state.  Note that once file is closed, you
+   cannot call gzerror with file, since its structures have been deallocated.
+   gzclose must not be called more than once on the same file, just as free
+   must not be called more than once on the same allocation.
+
+     gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
+   file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the
+   last read ended in the middle of a gzip stream, or Z_OK on success.
+*/
+
+ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
+ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
+/*
+     Same as gzclose(), but gzclose_r() is only for use when reading, and
+   gzclose_w() is only for use when writing or appending.  The advantage to
+   using these instead of gzclose() is that they avoid linking in zlib
+   compression or decompression code that is not used when only reading or only
+   writing respectively.  If gzclose() is used, then both compression and
+   decompression code will be included the application when linking to a static
+   zlib library.
+*/
+
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
+/*
+     Return the error message for the last error which occurred on file.
+   errnum is set to zlib error number.  If an error occurred in the file system
+   and not in the compression library, errnum is set to Z_ERRNO and the
+   application may consult errno to get the exact error code.
+
+     The application must not modify the returned string.  Future calls to
+   this function may invalidate the previously returned string.  If file is
+   closed, then the string previously returned by gzerror will no longer be
+   available.
+
+     gzerror() should be used to distinguish errors from end-of-file for those
+   functions above that do not distinguish those cases in their return values.
+*/
+
+ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
+/*
+     Clear the error and end-of-file flags for file.  This is analogous to the
+   clearerr() function in stdio.  This is useful for continuing to read a gzip
+   file that is being written concurrently.
+*/
+
+#endif /* !Z_SOLO */
+
+                        /* checksum functions */
+
+/*
+     These functions are not related to compression but are exported
+   anyway because they might be useful in applications using the compression
+   library.
+*/
+
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+/*
+     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
+   return the updated checksum. An Adler-32 value is in the range of a 32-bit
+   unsigned integer. If buf is Z_NULL, this function returns the required
+   initial value for the checksum.
+
+     An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed
+   much faster.
+
+   Usage example:
+
+     uLong adler = adler32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       adler = adler32(adler, buffer, length);
+     }
+     if (adler != original_adler) error();
+*/
+
+ZEXTERN uLong ZEXPORT adler32_z OF((uLong adler, const Bytef *buf,
+                                    z_size_t len));
+/*
+     Same as adler32(), but with a size_t length.
+*/
+
+/*
+ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
+                                          z_off_t len2));
+
+     Combine two Adler-32 checksums into one.  For two sequences of bytes, seq1
+   and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
+   each, adler1 and adler2.  adler32_combine() returns the Adler-32 checksum of
+   seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.  Note
+   that the z_off_t type (like off_t) is a signed integer.  If len2 is
+   negative, the result has no meaning or utility.
+*/
+
+ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
+/*
+     Update a running CRC-32 with the bytes buf[0..len-1] and return the
+   updated CRC-32. A CRC-32 value is in the range of a 32-bit unsigned integer.
+   If buf is Z_NULL, this function returns the required initial value for the
+   crc. Pre- and post-conditioning (one's complement) is performed within this
+   function so it shouldn't be done by the application.
+
+   Usage example:
+
+     uLong crc = crc32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       crc = crc32(crc, buffer, length);
+     }
+     if (crc != original_crc) error();
+*/
+
+ZEXTERN uLong ZEXPORT crc32_z OF((uLong crc, const Bytef *buf,
+                                  z_size_t len));
+/*
+     Same as crc32(), but with a size_t length.
+*/
+
+/*
+ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
+
+     Combine two CRC-32 check values into one.  For two sequences of bytes,
+   seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
+   calculated for each, crc1 and crc2.  crc32_combine() returns the CRC-32
+   check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
+   len2.
+*/
+
+/*
+ZEXTERN uLong ZEXPORT crc32_combine_gen OF((z_off_t len2));
+
+     Return the operator corresponding to length len2, to be used with
+   crc32_combine_op().
+*/
+
+ZEXTERN uLong ZEXPORT crc32_combine_op OF((uLong crc1, uLong crc2, uLong op));
+/*
+     Give the same result as crc32_combine(), using op in place of len2. op is
+   is generated from len2 by crc32_combine_gen(). This will be faster than
+   crc32_combine() if the generated op is used more than once.
+*/
+
+
+                        /* various hacks, don't look :) */
+
+/* deflateInit and inflateInit are macros to allow checking the zlib version
+ * and the compiler's view of z_stream:
+ */
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int  level, int  method,
+                                      int windowBits, int memLevel,
+                                      int strategy, const char *version,
+                                      int stream_size));
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int  windowBits,
+                                      const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
+                                         unsigned char FAR *window,
+                                         const char *version,
+                                         int stream_size));
+#ifdef Z_PREFIX_SET
+#  define z_deflateInit(strm, level) \
+          deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
+#  define z_inflateInit(strm) \
+          inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
+#  define z_deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
+          deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
+                        (strategy), ZLIB_VERSION, (int)sizeof(z_stream))
+#  define z_inflateInit2(strm, windowBits) \
+          inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
+                        (int)sizeof(z_stream))
+#  define z_inflateBackInit(strm, windowBits, window) \
+          inflateBackInit_((strm), (windowBits), (window), \
+                           ZLIB_VERSION, (int)sizeof(z_stream))
+#else
+#  define deflateInit(strm, level) \
+          deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
+#  define inflateInit(strm) \
+          inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
+#  define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
+          deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
+                        (strategy), ZLIB_VERSION, (int)sizeof(z_stream))
+#  define inflateInit2(strm, windowBits) \
+          inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
+                        (int)sizeof(z_stream))
+#  define inflateBackInit(strm, windowBits, window) \
+          inflateBackInit_((strm), (windowBits), (window), \
+                           ZLIB_VERSION, (int)sizeof(z_stream))
+#endif
+
+#ifndef Z_SOLO
+
+/* gzgetc() macro and its supporting function and exposed data structure.  Note
+ * that the real internal state is much larger than the exposed structure.
+ * This abbreviated structure exposes just enough for the gzgetc() macro.  The
+ * user should not mess with these exposed elements, since their names or
+ * behavior could change in the future, perhaps even capriciously.  They can
+ * only be used by the gzgetc() macro.  You have been warned.
+ */
+struct gzFile_s {
+    unsigned have;
+    unsigned char *next;
+    z_off64_t pos;
+};
+ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file));  /* backward compatibility */
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#  define z_gzgetc(g) \
+          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
+#else
+#  define gzgetc(g) \
+          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
+#endif
+
+/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
+ * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
+ * both are true, the application gets the *64 functions, and the regular
+ * functions are changed to 64 bits) -- in case these are set on systems
+ * without large file support, _LFS64_LARGEFILE must also be true
+ */
+#ifdef Z_LARGE64
+   ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+   ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
+   ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
+   ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
+   ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
+   ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
+   ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off64_t));
+#endif
+
+#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
+#  ifdef Z_PREFIX_SET
+#    define z_gzopen z_gzopen64
+#    define z_gzseek z_gzseek64
+#    define z_gztell z_gztell64
+#    define z_gzoffset z_gzoffset64
+#    define z_adler32_combine z_adler32_combine64
+#    define z_crc32_combine z_crc32_combine64
+#    define z_crc32_combine_gen z_crc32_combine_gen64
+#  else
+#    define gzopen gzopen64
+#    define gzseek gzseek64
+#    define gztell gztell64
+#    define gzoffset gzoffset64
+#    define adler32_combine adler32_combine64
+#    define crc32_combine crc32_combine64
+#    define crc32_combine_gen crc32_combine_gen64
+#  endif
+#  ifndef Z_LARGE64
+     ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+     ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
+     ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
+     ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
+     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
+     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+     ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
+#  endif
+#else
+   ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
+   ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));
+   ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));
+   ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));
+   ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
+   ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
+   ZEXTERN uLong ZEXPORT crc32_combine_gen OF((z_off_t));
+#endif
+
+#else /* Z_SOLO */
+
+   ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
+   ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
+   ZEXTERN uLong ZEXPORT crc32_combine_gen OF((z_off_t));
+
+#endif /* !Z_SOLO */
+
+/* undocumented functions */
+ZEXTERN const char   * ZEXPORT zError           OF((int));
+ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp));
+ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table    OF((void));
+ZEXTERN int            ZEXPORT inflateUndermine OF((z_streamp, int));
+ZEXTERN int            ZEXPORT inflateValidate OF((z_streamp, int));
+ZEXTERN unsigned long  ZEXPORT inflateCodesUsed OF((z_streamp));
+ZEXTERN int            ZEXPORT inflateResetKeep OF((z_streamp));
+ZEXTERN int            ZEXPORT deflateResetKeep OF((z_streamp));
+#if defined(_WIN32) && !defined(Z_SOLO)
+ZEXTERN gzFile         ZEXPORT gzopen_w OF((const wchar_t *path,
+                                            const char *mode));
+#endif
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+ZEXTERN int            ZEXPORTVA gzvprintf Z_ARG((gzFile file,
+                                                  const char *format,
+                                                  va_list va));
+#  endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ZLIB_H */
diff --git a/lib/zlib/zutil.c b/lib/zlib/zutil.c
new file mode 100644
index 0000000..9543ae8
--- /dev/null
+++ b/lib/zlib/zutil.c
@@ -0,0 +1,327 @@
+/* zutil.c -- target dependent utility functions for the compression library
+ * Copyright (C) 1995-2017 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#include "zutil.h"
+#ifndef Z_SOLO
+#  include "gzguts.h"
+#endif
+
+z_const char * const z_errmsg[10] = {
+    (z_const char *)"need dictionary",     /* Z_NEED_DICT       2  */
+    (z_const char *)"stream end",          /* Z_STREAM_END      1  */
+    (z_const char *)"",                    /* Z_OK              0  */
+    (z_const char *)"file error",          /* Z_ERRNO         (-1) */
+    (z_const char *)"stream error",        /* Z_STREAM_ERROR  (-2) */
+    (z_const char *)"data error",          /* Z_DATA_ERROR    (-3) */
+    (z_const char *)"insufficient memory", /* Z_MEM_ERROR     (-4) */
+    (z_const char *)"buffer error",        /* Z_BUF_ERROR     (-5) */
+    (z_const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */
+    (z_const char *)""
+};
+
+
+const char * ZEXPORT zlibVersion()
+{
+    return ZLIB_VERSION;
+}
+
+uLong ZEXPORT zlibCompileFlags()
+{
+    uLong flags;
+
+    flags = 0;
+    switch ((int)(sizeof(uInt))) {
+    case 2:     break;
+    case 4:     flags += 1;     break;
+    case 8:     flags += 2;     break;
+    default:    flags += 3;
+    }
+    switch ((int)(sizeof(uLong))) {
+    case 2:     break;
+    case 4:     flags += 1 << 2;        break;
+    case 8:     flags += 2 << 2;        break;
+    default:    flags += 3 << 2;
+    }
+    switch ((int)(sizeof(voidpf))) {
+    case 2:     break;
+    case 4:     flags += 1 << 4;        break;
+    case 8:     flags += 2 << 4;        break;
+    default:    flags += 3 << 4;
+    }
+    switch ((int)(sizeof(z_off_t))) {
+    case 2:     break;
+    case 4:     flags += 1 << 6;        break;
+    case 8:     flags += 2 << 6;        break;
+    default:    flags += 3 << 6;
+    }
+#ifdef ZLIB_DEBUG
+    flags += 1 << 8;
+#endif
+    /*
+#if defined(ASMV) || defined(ASMINF)
+    flags += 1 << 9;
+#endif
+     */
+#ifdef ZLIB_WINAPI
+    flags += 1 << 10;
+#endif
+#ifdef BUILDFIXED
+    flags += 1 << 12;
+#endif
+#ifdef DYNAMIC_CRC_TABLE
+    flags += 1 << 13;
+#endif
+#ifdef NO_GZCOMPRESS
+    flags += 1L << 16;
+#endif
+#ifdef NO_GZIP
+    flags += 1L << 17;
+#endif
+#ifdef PKZIP_BUG_WORKAROUND
+    flags += 1L << 20;
+#endif
+#ifdef FASTEST
+    flags += 1L << 21;
+#endif
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifdef NO_vsnprintf
+    flags += 1L << 25;
+#    ifdef HAS_vsprintf_void
+    flags += 1L << 26;
+#    endif
+#  else
+#    ifdef HAS_vsnprintf_void
+    flags += 1L << 26;
+#    endif
+#  endif
+#else
+    flags += 1L << 24;
+#  ifdef NO_snprintf
+    flags += 1L << 25;
+#    ifdef HAS_sprintf_void
+    flags += 1L << 26;
+#    endif
+#  else
+#    ifdef HAS_snprintf_void
+    flags += 1L << 26;
+#    endif
+#  endif
+#endif
+    return flags;
+}
+
+#ifdef ZLIB_DEBUG
+#include <stdlib.h>
+#  ifndef verbose
+#    define verbose 0
+#  endif
+int ZLIB_INTERNAL z_verbose = verbose;
+
+void ZLIB_INTERNAL z_error(m)
+    char *m;
+{
+    fprintf(stderr, "%s\n", m);
+    exit(1);
+}
+#endif
+
+/* exported to allow conversion of error code to string for compress() and
+ * uncompress()
+ */
+const char * ZEXPORT zError(err)
+    int err;
+{
+    return ERR_MSG(err);
+}
+
+#if defined(_WIN32_WCE) && _WIN32_WCE < 0x800
+    /* The older Microsoft C Run-Time Library for Windows CE doesn't have
+     * errno.  We define it as a global variable to simplify porting.
+     * Its value is always 0 and should not be used.
+     */
+    int errno = 0;
+#endif
+
+#ifndef HAVE_MEMCPY
+
+void ZLIB_INTERNAL zmemcpy(dest, source, len)
+    Bytef* dest;
+    const Bytef* source;
+    uInt  len;
+{
+    if (len == 0) return;
+    do {
+        *dest++ = *source++; /* ??? to be unrolled */
+    } while (--len != 0);
+}
+
+int ZLIB_INTERNAL zmemcmp(s1, s2, len)
+    const Bytef* s1;
+    const Bytef* s2;
+    uInt  len;
+{
+    uInt j;
+
+    for (j = 0; j < len; j++) {
+        if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
+    }
+    return 0;
+}
+
+void ZLIB_INTERNAL zmemzero(dest, len)
+    Bytef* dest;
+    uInt  len;
+{
+    if (len == 0) return;
+    do {
+        *dest++ = 0;  /* ??? to be unrolled */
+    } while (--len != 0);
+}
+#endif
+
+#ifndef Z_SOLO
+
+#ifdef SYS16BIT
+
+#ifdef __TURBOC__
+/* Turbo C in 16-bit mode */
+
+#  define MY_ZCALLOC
+
+/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
+ * and farmalloc(64K) returns a pointer with an offset of 8, so we
+ * must fix the pointer. Warning: the pointer must be put back to its
+ * original form in order to free it, use zcfree().
+ */
+
+#define MAX_PTR 10
+/* 10*64K = 640K */
+
+local int next_ptr = 0;
+
+typedef struct ptr_table_s {
+    voidpf org_ptr;
+    voidpf new_ptr;
+} ptr_table;
+
+local ptr_table table[MAX_PTR];
+/* This table is used to remember the original form of pointers
+ * to large buffers (64K). Such pointers are normalized with a zero offset.
+ * Since MSDOS is not a preemptive multitasking OS, this table is not
+ * protected from concurrent access. This hack doesn't work anyway on
+ * a protected system like OS/2. Use Microsoft C instead.
+ */
+
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
+{
+    voidpf buf;
+    ulg bsize = (ulg)items*size;
+
+    (void)opaque;
+
+    /* If we allocate less than 65520 bytes, we assume that farmalloc
+     * will return a usable pointer which doesn't have to be normalized.
+     */
+    if (bsize < 65520L) {
+        buf = farmalloc(bsize);
+        if (*(ush*)&buf != 0) return buf;
+    } else {
+        buf = farmalloc(bsize + 16L);
+    }
+    if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
+    table[next_ptr].org_ptr = buf;
+
+    /* Normalize the pointer to seg:0 */
+    *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
+    *(ush*)&buf = 0;
+    table[next_ptr++].new_ptr = buf;
+    return buf;
+}
+
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
+{
+    int n;
+
+    (void)opaque;
+
+    if (*(ush*)&ptr != 0) { /* object < 64K */
+        farfree(ptr);
+        return;
+    }
+    /* Find the original pointer */
+    for (n = 0; n < next_ptr; n++) {
+        if (ptr != table[n].new_ptr) continue;
+
+        farfree(table[n].org_ptr);
+        while (++n < next_ptr) {
+            table[n-1] = table[n];
+        }
+        next_ptr--;
+        return;
+    }
+    Assert(0, "zcfree: ptr not found");
+}
+
+#endif /* __TURBOC__ */
+
+
+#ifdef M_I86
+/* Microsoft C in 16-bit mode */
+
+#  define MY_ZCALLOC
+
+#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
+#  define _halloc  halloc
+#  define _hfree   hfree
+#endif
+
+voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size)
+{
+    (void)opaque;
+    return _halloc((long)items, size);
+}
+
+void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
+{
+    (void)opaque;
+    _hfree(ptr);
+}
+
+#endif /* M_I86 */
+
+#endif /* SYS16BIT */
+
+
+#ifndef MY_ZCALLOC /* Any system without a special alloc function */
+
+#ifndef STDC
+extern voidp  malloc OF((uInt size));
+extern voidp  calloc OF((uInt items, uInt size));
+extern void   free   OF((voidpf ptr));
+#endif
+
+voidpf ZLIB_INTERNAL zcalloc(opaque, items, size)
+    voidpf opaque;
+    unsigned items;
+    unsigned size;
+{
+    (void)opaque;
+    return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
+                              (voidpf)calloc(items, size);
+}
+
+void ZLIB_INTERNAL zcfree(opaque, ptr)
+    voidpf opaque;
+    voidpf ptr;
+{
+    (void)opaque;
+    free(ptr);
+}
+
+#endif /* MY_ZCALLOC */
+
+#endif /* !Z_SOLO */
diff --git a/lib/zlib/zutil.h b/lib/zlib/zutil.h
new file mode 100644
index 0000000..0bc7f4e
--- /dev/null
+++ b/lib/zlib/zutil.h
@@ -0,0 +1,275 @@
+/* zutil.h -- internal interface and configuration of the compression library
+ * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id$ */
+
+#ifndef ZUTIL_H
+#define ZUTIL_H
+
+#ifdef HAVE_HIDDEN
+#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
+#else
+#  define ZLIB_INTERNAL
+#endif
+
+#include "zlib.h"
+
+#if defined(STDC) && !defined(Z_SOLO)
+#  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
+#    include <stddef.h>
+#  endif
+#  include <string.h>
+#  include <stdlib.h>
+#endif
+
+#ifndef local
+#  define local static
+#endif
+/* since "static" is used to mean two completely different things in C, we
+   define "local" for the non-static meaning of "static", for readability
+   (compile with -Dlocal if your debugger can't find static symbols) */
+
+typedef unsigned char  uch;
+typedef uch FAR uchf;
+typedef unsigned short ush;
+typedef ush FAR ushf;
+typedef unsigned long  ulg;
+
+#if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
+#  include <limits.h>
+#  if (ULONG_MAX == 0xffffffffffffffff)
+#    define Z_U8 unsigned long
+#  elif (ULLONG_MAX == 0xffffffffffffffff)
+#    define Z_U8 unsigned long long
+#  elif (UINT_MAX == 0xffffffffffffffff)
+#    define Z_U8 unsigned
+#  endif
+#endif
+
+extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
+/* (size given to avoid silly warnings with Visual C++) */
+
+#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
+
+#define ERR_RETURN(strm,err) \
+  return (strm->msg = ERR_MSG(err), (err))
+/* To be used only when the state is known to be valid */
+
+        /* common constants */
+
+#ifndef DEF_WBITS
+#  define DEF_WBITS MAX_WBITS
+#endif
+/* default windowBits for decompression. MAX_WBITS is for compression only */
+
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+/* default memLevel */
+
+#define STORED_BLOCK 0
+#define STATIC_TREES 1
+#define DYN_TREES    2
+/* The three kinds of block type */
+
+#define MIN_MATCH  3
+#define MAX_MATCH  258
+/* The minimum and maximum match lengths */
+
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
+
+        /* target dependencies */
+
+#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
+#  define OS_CODE  0x00
+#  ifndef Z_SOLO
+#    if defined(__TURBOC__) || defined(__BORLANDC__)
+#      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
+         /* Allow compilation with ANSI keywords only enabled */
+         void _Cdecl farfree( void *block );
+         void *_Cdecl farmalloc( unsigned long nbytes );
+#      else
+#        include <alloc.h>
+#      endif
+#    else /* MSC or DJGPP */
+#      include <malloc.h>
+#    endif
+#  endif
+#endif
+
+#ifdef AMIGA
+#  define OS_CODE  1
+#endif
+
+#if defined(VAXC) || defined(VMS)
+#  define OS_CODE  2
+#  define F_OPEN(name, mode) \
+     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
+#endif
+
+#ifdef __370__
+#  if __TARGET_LIB__ < 0x20000000
+#    define OS_CODE 4
+#  elif __TARGET_LIB__ < 0x40000000
+#    define OS_CODE 11
+#  else
+#    define OS_CODE 8
+#  endif
+#endif
+
+#if defined(ATARI) || defined(atarist)
+#  define OS_CODE  5
+#endif
+
+#ifdef OS2
+#  define OS_CODE  6
+#  if defined(M_I86) && !defined(Z_SOLO)
+#    include <malloc.h>
+#  endif
+#endif
+
+#if defined(MACOS) || defined(TARGET_OS_MAC)
+#  define OS_CODE  7
+#  ifndef Z_SOLO
+#    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
+#      include <unix.h> /* for fdopen */
+#    else
+#      ifndef fdopen
+#        define fdopen(fd,mode) NULL /* No fdopen() */
+#      endif
+#    endif
+#  endif
+#endif
+
+#ifdef __acorn
+#  define OS_CODE 13
+#endif
+
+#if defined(WIN32) && !defined(__CYGWIN__)
+#  define OS_CODE  10
+#endif
+
+#ifdef _BEOS_
+#  define OS_CODE  16
+#endif
+
+#ifdef __TOS_OS400__
+#  define OS_CODE 18
+#endif
+
+#ifdef __APPLE__
+#  define OS_CODE 19
+#endif
+
+#if defined(_BEOS_) || defined(RISCOS)
+#  define fdopen(fd,mode) NULL /* No fdopen() */
+#endif
+
+#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
+#  if defined(_WIN32_WCE)
+#    define fdopen(fd,mode) NULL /* No fdopen() */
+#  else
+#    define fdopen(fd,type)  _fdopen(fd,type)
+#  endif
+#endif
+
+#if defined(__BORLANDC__) && !defined(MSDOS)
+  #pragma warn -8004
+  #pragma warn -8008
+  #pragma warn -8066
+#endif
+
+/* provide prototypes for these when building zlib without LFS */
+#if !defined(_WIN32) && \
+    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
+    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
+    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+    ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
+#endif
+
+        /* common defaults */
+
+#ifndef OS_CODE
+#  define OS_CODE  3     /* assume Unix */
+#endif
+
+#ifndef F_OPEN
+#  define F_OPEN(name, mode) fopen((name), (mode))
+#endif
+
+         /* functions */
+
+#if defined(pyr) || defined(Z_SOLO)
+#  define NO_MEMCPY
+#endif
+#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
+ /* Use our own functions for small and medium model with MSC <= 5.0.
+  * You may have to use the same strategy for Borland C (untested).
+  * The __SC__ check is for Symantec.
+  */
+#  define NO_MEMCPY
+#endif
+#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
+#  define HAVE_MEMCPY
+#endif
+#ifdef HAVE_MEMCPY
+#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
+#    define zmemcpy _fmemcpy
+#    define zmemcmp _fmemcmp
+#    define zmemzero(dest, len) _fmemset(dest, 0, len)
+#  else
+#    define zmemcpy memcpy
+#    define zmemcmp memcmp
+#    define zmemzero(dest, len) memset(dest, 0, len)
+#  endif
+#else
+   void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
+   int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
+   void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
+#endif
+
+/* Diagnostic functions */
+#ifdef ZLIB_DEBUG
+#  include <stdio.h>
+   extern int ZLIB_INTERNAL z_verbose;
+   extern void ZLIB_INTERNAL z_error OF((char *m));
+#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
+#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
+#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
+#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+#ifndef Z_SOLO
+   voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
+                                    unsigned size));
+   void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
+#endif
+
+#define ZALLOC(strm, items, size) \
+           (*((strm)->zalloc))((strm)->opaque, (items), (size))
+#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
+#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
+
+/* Reverse the bytes in a 32-bit value */
+#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
+                    (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
+
+#endif /* ZUTIL_H */