diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
commit | ae581a19fbe896a797450b9d9573fb66f2735227 (patch) | |
tree | 56c40be8518a29c9351364d13a9676aa83932dc0 /plugins/system_group | |
parent | Initial commit. (diff) | |
download | sudo-upstream.tar.xz sudo-upstream.zip |
Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/system_group')
-rw-r--r-- | plugins/system_group/Makefile.in | 225 | ||||
-rw-r--r-- | plugins/system_group/system_group.c | 144 | ||||
-rw-r--r-- | plugins/system_group/system_group.exp | 1 |
3 files changed, 370 insertions, 0 deletions
diff --git a/plugins/system_group/Makefile.in b/plugins/system_group/Makefile.in new file mode 100644 index 0000000..da93c1d --- /dev/null +++ b/plugins/system_group/Makefile.in @@ -0,0 +1,225 @@ +# +# 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@ +devdir = @devdir@ +scriptdir = $(top_srcdir)/scripts +incdir = $(top_srcdir)/include +cross_compiling = @CROSS_COMPILING@ + +# 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@ + +# Libraries +LT_LIBS = $(top_builddir)/lib/util/libsudo_util.la +LIBS = $(LT_LIBS) + +# C preprocessor flags +CPPFLAGS = -I$(incdir) -I$(top_builddir) @CPPFLAGS@ + +# Usually -O and/or -g +CFLAGS = @CFLAGS@ + +# Flags to pass to the link stage +LDFLAGS = @LDFLAGS@ +LT_LDFLAGS = @LT_LDFLAGS@ @LT_LDEXPORTS@ + +# Flags to pass to libtool +LTFLAGS = --tag=disable-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) + +# Where to install things... +prefix = @prefix@ +exec_prefix = @exec_prefix@ +bindir = @bindir@ +sbindir = @sbindir@ +sysconfdir = @sysconfdir@ +libexecdir = @libexecdir@ +datarootdir = @datarootdir@ +localstatedir = @localstatedir@ +plugindir = @plugindir@ + +# File mode and map file to use for shared libraries/objects +shlib_enable = @SHLIB_ENABLE@ +shlib_mode = @SHLIB_MODE@ +shlib_exp = $(srcdir)/system_group.exp +shlib_map = system_group.map +shlib_opt = system_group.opt + +# User and group ids the installed files should be "owned" by +install_uid = 0 +install_gid = 0 + +#### End of system configuration section. #### + +SHELL = @SHELL@ + +OBJS = system_group.lo + +IOBJS = system_group.i + +POBJS = system_group.plog + +LIBOBJDIR = $(top_builddir)/@ac_config_libobj_dir@/ + +VERSION = @PACKAGE_VERSION@ + +all: system_group.la + +depend: + $(scriptdir)/mkdep.pl --srcdir=$(abs_top_srcdir) \ + --builddir=$(abs_top_builddir) plugins/system_group/Makefile.in + cd $(top_builddir) && ./config.status --file plugins/system_group/Makefile + +Makefile: $(srcdir)/Makefile.in + cd $(top_builddir) && ./config.status --file plugins/system_group/Makefile + +.SUFFIXES: .c .h .i .lo .plog + +.c.lo: + $(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c $(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) > $@ + +system_group.la: $(OBJS) $(LT_LIBS) @LT_LDDEP@ + $(LIBTOOL) $(LTFLAGS) --mode=link $(CC) $(LDFLAGS) $(ASAN_LDFLAGS) $(HARDENING_LDFLAGS) $(LT_LDFLAGS) -o $@ $(OBJS) $(LIBS) -module -avoid-version -rpath $(plugindir) -shrext .so + +pre-install: + +install: install-plugin + +install-dirs: + $(SHELL) $(scriptdir)/mkinstalldirs $(DESTDIR)$(plugindir) + +install-binaries: + +install-includes: + +install-doc: + +install-plugin: install-dirs system_group.la + if [ X"$(shlib_enable)" = X"yes" ]; then \ + INSTALL_BACKUP='$(INSTALL_BACKUP)' $(LIBTOOL) $(LTFLAGS) --mode=install $(INSTALL) $(INSTALL_OWNER) -m $(shlib_mode) system_group.la $(DESTDIR)$(plugindir); \ + fi + +install-fuzzer: + +uninstall: + -$(LIBTOOL) $(LTFLAGS) --mode=uninstall rm -f $(DESTDIR)$(plugindir)/system_group.la + -test -z "$(INSTALL_BACKUP)" || \ + rm -f $(DESTDIR)$(plugindir)/system_group.so$(INSTALL_BACKUP) + +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) $(POBJS) + +fuzz: + +check-fuzzer: + +check: check-fuzzer + +check-verbose: check + +clean: + -$(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 $(shlib_map) $(shlib_opt) + +clobber: distclean + +realclean: distclean + rm -f TAGS tags + +cleandir: realclean + +.PHONY: clean mostlyclean distclean cleandir clobber realclean + +# Autogenerated dependencies, do not modify +system_group.lo: $(srcdir)/system_group.c $(incdir)/compat/stdbool.h \ + $(incdir)/sudo_compat.h $(incdir)/sudo_dso.h \ + $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \ + $(top_builddir)/config.h + $(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(HARDENING_CFLAGS) $(srcdir)/system_group.c +system_group.i: $(srcdir)/system_group.c $(incdir)/compat/stdbool.h \ + $(incdir)/sudo_compat.h $(incdir)/sudo_dso.h \ + $(incdir)/sudo_plugin.h $(incdir)/sudo_util.h \ + $(top_builddir)/config.h + $(CC) -E -o $@ $(CPPFLAGS) $< +system_group.plog: system_group.i + rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/system_group.c --i-file $< --output-file $@ diff --git a/plugins/system_group/system_group.c b/plugins/system_group/system_group.c new file mode 100644 index 0000000..c43fc0c --- /dev/null +++ b/plugins/system_group/system_group.c @@ -0,0 +1,144 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 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> + +#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> +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif /* HAVE_STRINGS_H */ +#include <grp.h> + +#include "sudo_compat.h" +#include "sudo_dso.h" +#include "sudo_plugin.h" +#include "sudo_util.h" + +/* + * Sudoers group plugin that does group name-based lookups using the system + * group database functions, similar to how sudo behaved prior to 1.7.3. + * This can be used on systems where lookups by group ID are problematic. + */ + +typedef struct group * (*sysgroup_getgrnam_t)(const char *); +typedef struct group * (*sysgroup_getgrgid_t)(gid_t); +typedef void (*sysgroup_gr_delref_t)(struct group *); + +static sysgroup_getgrnam_t sysgroup_getgrnam; +static sysgroup_getgrgid_t sysgroup_getgrgid; +static sysgroup_gr_delref_t sysgroup_gr_delref; +static bool need_setent; + +static int +sysgroup_init(int version, sudo_printf_t plugin_printf, char *const argv[]) +{ + void *handle; + + if (SUDO_API_VERSION_GET_MAJOR(version) != GROUP_API_VERSION_MAJOR) { + plugin_printf(SUDO_CONV_ERROR_MSG, + "sysgroup_group: incompatible major version %d, expected %d\n", + SUDO_API_VERSION_GET_MAJOR(version), + GROUP_API_VERSION_MAJOR); + return -1; + } + + /* Share group cache with sudo if possible. */ + handle = sudo_dso_findsym(SUDO_DSO_DEFAULT, "sudo_getgrnam"); + if (handle != NULL) { + sysgroup_getgrnam = (sysgroup_getgrnam_t)handle; + } else { + sysgroup_getgrnam = (sysgroup_getgrnam_t)getgrnam; + need_setent = true; + } + + handle = sudo_dso_findsym(SUDO_DSO_DEFAULT, "sudo_getgrgid"); + if (handle != NULL) { + sysgroup_getgrgid = (sysgroup_getgrgid_t)handle; + } else { + sysgroup_getgrgid = (sysgroup_getgrgid_t)getgrgid; + need_setent = true; + } + + handle = sudo_dso_findsym(SUDO_DSO_DEFAULT, "sudo_gr_delref"); + if (handle != NULL) + sysgroup_gr_delref = (sysgroup_gr_delref_t)handle; + + if (need_setent) + setgrent(); + + return true; +} + +static void +sysgroup_cleanup(void) +{ + if (need_setent) + endgrent(); +} + +/* + * Returns true if "user" is a member of "group", else false. + */ +static int +sysgroup_query(const char *user, const char *group, const struct passwd *pwd) +{ + char **member; + struct group *grp; + + grp = sysgroup_getgrnam(group); + if (grp == NULL && group[0] == '#' && group[1] != '\0') { + const char *errstr; + gid_t gid = sudo_strtoid(group + 1, &errstr); + if (errstr == NULL) + grp = sysgroup_getgrgid(gid); + } + if (grp != NULL) { + if (grp->gr_mem != NULL) { + for (member = grp->gr_mem; *member != NULL; member++) { + if (strcasecmp(user, *member) == 0) { + if (sysgroup_gr_delref) + sysgroup_gr_delref(grp); + return true; + } + } + } + if (sysgroup_gr_delref) + sysgroup_gr_delref(grp); + } + + return false; +} + +sudo_dso_public struct sudoers_group_plugin group_plugin = { + GROUP_API_VERSION, + sysgroup_init, + sysgroup_cleanup, + sysgroup_query +}; diff --git a/plugins/system_group/system_group.exp b/plugins/system_group/system_group.exp new file mode 100644 index 0000000..a859d6c --- /dev/null +++ b/plugins/system_group/system_group.exp @@ -0,0 +1 @@ +group_plugin |