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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 07:24:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 07:24:22 +0000
commit45d6379135504814ab723b57f0eb8be23393a51d (patch)
treed4f2ec4acca824a8446387a758b0ce4238a4dffa /bin/dig
parentInitial commit. (diff)
downloadbind9-upstream/1%9.16.44.tar.xz
bind9-upstream/1%9.16.44.zip
Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--bin/dig/Makefile.in98
-rw-r--r--bin/dig/dig.c2728
-rw-r--r--bin/dig/dig.rst645
-rw-r--r--bin/dig/dighost.c4604
-rw-r--r--bin/dig/host.c927
-rw-r--r--bin/dig/host.rst171
l---------bin/dig/include/.clang-format1
-rw-r--r--bin/dig/include/dig/dig.h425
-rw-r--r--bin/dig/nslookup.c1047
-rw-r--r--bin/dig/nslookup.rst206
-rw-r--r--bin/dig/win32/dig.vcxproj.filters.in27
-rw-r--r--bin/dig/win32/dig.vcxproj.in122
-rw-r--r--bin/dig/win32/dig.vcxproj.user3
-rw-r--r--bin/dig/win32/dighost.vcxproj.filters.in18
-rw-r--r--bin/dig/win32/dighost.vcxproj.in115
-rw-r--r--bin/dig/win32/dighost.vcxproj.user3
-rw-r--r--bin/dig/win32/host.vcxproj.filters.in18
-rw-r--r--bin/dig/win32/host.vcxproj.in119
-rw-r--r--bin/dig/win32/host.vcxproj.user3
-rw-r--r--bin/dig/win32/nslookup.vcxproj.filters.in21
-rw-r--r--bin/dig/win32/nslookup.vcxproj.in120
-rw-r--r--bin/dig/win32/nslookup.vcxproj.user3
22 files changed, 11424 insertions, 0 deletions
diff --git a/bin/dig/Makefile.in b/bin/dig/Makefile.in
new file mode 100644
index 0000000..c329502
--- /dev/null
+++ b/bin/dig/Makefile.in
@@ -0,0 +1,98 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+srcdir = @srcdir@
+VPATH = @srcdir@
+top_srcdir = @top_srcdir@
+
+VERSION=@BIND9_VERSION@
+
+@BIND9_MAKE_INCLUDES@
+
+READLINE_LIB = @READLINE_LIB@
+
+CINCLUDES = -I${srcdir}/include ${DNS_INCLUDES} \
+ ${BIND9_INCLUDES} ${ISC_INCLUDES} \
+ ${IRS_INCLUDES} ${ISCCFG_INCLUDES} @LIBIDN2_CFLAGS@ \
+ ${OPENSSL_CFLAGS}
+
+CDEFINES = -DVERSION=\"${VERSION}\"
+CWARNINGS =
+
+ISCCFGLIBS = ../../lib/isccfg/libisccfg.@A@
+DNSLIBS = ../../lib/dns/libdns.@A@ @NO_LIBTOOL_DNSLIBS@
+BIND9LIBS = ../../lib/bind9/libbind9.@A@
+ISCLIBS = ../../lib/isc/libisc.@A@ @NO_LIBTOOL_ISCLIBS@
+ISCNOSYMLIBS = ../../lib/isc/libisc-nosymtbl.@A@ @NO_LIBTOOL_ISCLIBS@
+IRSLIBS = ../../lib/irs/libirs.@A@
+
+ISCCFGDEPLIBS = ../../lib/isccfg/libisccfg.@A@
+DNSDEPLIBS = ../../lib/dns/libdns.@A@
+BIND9DEPLIBS = ../../lib/bind9/libbind9.@A@
+ISCDEPLIBS = ../../lib/isc/libisc.@A@
+IRSDEPLIBS = ../../lib/irs/libirs.@A@
+
+DEPLIBS = ${DNSDEPLIBS} ${IRSDEPLIBS} ${BIND9DEPLIBS} \
+ ${ISCDEPLIBS} ${ISCCFGDEPLIBS}
+
+LIBS = ${DNSLIBS} ${IRSLIBS} ${BIND9LIBS} ${ISCCFGLIBS} \
+ ${ISCLIBS} @LIBIDN2_LIBS@ @LIBS@
+
+NOSYMLIBS = ${DNSLIBS} ${IRSLIBS} ${BIND9LIBS} ${ISCCFGLIBS} \
+ ${ISCNOSYMLIBS} @LIBIDN2_LIBS@ @LIBS@
+
+SUBDIRS =
+
+TARGETS = dig@EXEEXT@ host@EXEEXT@ nslookup@EXEEXT@
+
+OBJS = dig.@O@ dighost.@O@ host.@O@ nslookup.@O@
+
+UOBJS =
+
+SRCS = dig.c dighost.c host.c nslookup.c
+
+@BIND9_MAKE_RULES@
+
+LDFLAGS = @LDFLAGS@ @LIBIDN2_LDFLAGS@
+
+dig@EXEEXT@: dig.@O@ dighost.@O@ ${UOBJS} ${DEPLIBS}
+ export BASEOBJS="dig.@O@ dighost.@O@ ${UOBJS}"; \
+ export LIBS0="${DNSLIBS} ${IRSLIBS}"; \
+ ${FINALBUILDCMD}
+
+host@EXEEXT@: host.@O@ dighost.@O@ ${UOBJS} ${DEPLIBS}
+ export BASEOBJS="host.@O@ dighost.@O@ ${UOBJS}"; \
+ export LIBS0="${DNSLIBS} ${IRSLIBS}"; \
+ ${FINALBUILDCMD}
+
+nslookup@EXEEXT@: nslookup.@O@ dighost.@O@ ${UOBJS} ${DEPLIBS}
+ export BASEOBJS="nslookup.@O@ dighost.@O@ ${READLINE_LIB} ${UOBJS}"; \
+ export LIBS0="${DNSLIBS} ${IRSLIBS}"; \
+ ${FINALBUILDCMD}
+
+clean distclean maintainer-clean::
+ rm -f ${TARGETS}
+
+installdirs:
+ $(SHELL) ${top_srcdir}/mkinstalldirs ${DESTDIR}${bindir}
+
+install:: dig@EXEEXT@ host@EXEEXT@ nslookup@EXEEXT@ installdirs
+ ${LIBTOOL_MODE_INSTALL} ${INSTALL_PROGRAM} \
+ dig@EXEEXT@ ${DESTDIR}${bindir}
+ ${LIBTOOL_MODE_INSTALL} ${INSTALL_PROGRAM} \
+ host@EXEEXT@ ${DESTDIR}${bindir}
+ ${LIBTOOL_MODE_INSTALL} ${INSTALL_PROGRAM} \
+ nslookup@EXEEXT@ ${DESTDIR}${bindir}
+
+uninstall::
+ ${LIBTOOL_MODE_UNINSTALL} rm -f ${DESTDIR}${bindir}/nslookup@EXEEXT@
+ ${LIBTOOL_MODE_UNINSTALL} rm -f ${DESTDIR}${bindir}/host@EXEEXT@
+ ${LIBTOOL_MODE_UNINSTALL} rm -f ${DESTDIR}${bindir}/dig@EXEEXT@
diff --git a/bin/dig/dig.c b/bin/dig/dig.c
new file mode 100644
index 0000000..423bf7d
--- /dev/null
+++ b/bin/dig/dig.c
@@ -0,0 +1,2728 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <ctype.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include <isc/app.h>
+#include <isc/netaddr.h>
+#include <isc/parseint.h>
+#include <isc/platform.h>
+#include <isc/print.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/util.h>
+
+#include <pk11/site.h>
+
+#include <dns/byaddr.h>
+#include <dns/fixedname.h>
+#include <dns/masterdump.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/rcode.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdataset.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+#include <dns/tsig.h>
+
+#include <dig/dig.h>
+
+#define ADD_STRING(b, s) \
+ { \
+ if (strlen(s) >= isc_buffer_availablelength(b)) { \
+ return (ISC_R_NOSPACE); \
+ } else { \
+ isc_buffer_putstr(b, s); \
+ } \
+ }
+
+#define DIG_MAX_ADDRESSES 20
+
+dig_lookup_t *default_lookup = NULL;
+
+static atomic_uintptr_t batchname = 0;
+static FILE *batchfp = NULL;
+static char *argv0;
+static int addresscount = 0;
+
+static char domainopt[DNS_NAME_MAXTEXT];
+static char hexcookie[81];
+
+static bool short_form = false, printcmd = true, plusquest = false,
+ pluscomm = false, ipv4only = false, ipv6only = false, digrc = true;
+static uint32_t splitwidth = 0xffffffff;
+
+/*% opcode text */
+static const char *const opcodetext[] = {
+ "QUERY", "IQUERY", "STATUS", "RESERVED3",
+ "NOTIFY", "UPDATE", "RESERVED6", "RESERVED7",
+ "RESERVED8", "RESERVED9", "RESERVED10", "RESERVED11",
+ "RESERVED12", "RESERVED13", "RESERVED14", "RESERVED15"
+};
+
+static const char *
+rcode_totext(dns_rcode_t rcode) {
+ static char buf[64];
+ isc_buffer_t b;
+ isc_result_t result;
+
+ memset(buf, 0, sizeof(buf));
+ isc_buffer_init(&b, buf + 1, sizeof(buf) - 2);
+ result = dns_rcode_totext(rcode, &b);
+ RUNTIME_CHECK(result == ISC_R_SUCCESS);
+ if (strspn(buf + 1, "0123456789") == strlen(buf + 1)) {
+ buf[0] = '?';
+ return (buf);
+ }
+ return (buf + 1);
+}
+
+/*% print usage */
+static void
+print_usage(FILE *fp) {
+ fputs("Usage: dig [@global-server] [domain] [q-type] [q-class] "
+ "{q-opt}\n"
+ " {global-d-opt} host [@local-server] {local-d-opt}\n"
+ " [ host [@local-server] {local-d-opt} [...]]\n",
+ fp);
+}
+
+#if TARGET_OS_IPHONE
+static void
+usage(void) {
+ fprintf(stderr, "Press <Help> for complete list of options\n");
+}
+#else /* if TARGET_OS_IPHONE */
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+ print_usage(stderr);
+ fputs("\nUse \"dig -h\" (or \"dig -h | more\") "
+ "for complete list of options\n",
+ stderr);
+ exit(1);
+}
+#endif /* if TARGET_OS_IPHONE */
+
+/*% version */
+static void
+version(void) {
+ fputs("DiG " VERSION "\n", stderr);
+}
+
+/*% help */
+static void
+help(void) {
+ print_usage(stdout);
+ fputs("Where: domain is in the Domain Name System\n"
+ " q-class is one of (in,hs,ch,...) [default: in]\n"
+ " q-type is one of (a,any,mx,ns,soa,hinfo,axfr,txt,...) "
+ "[default:a]\n"
+ " (Use ixfr=version for type ixfr)\n"
+ " q-opt is one of:\n"
+ " -4 (use IPv4 query transport "
+ "only)\n"
+ " -6 (use IPv6 query transport "
+ "only)\n"
+ " -b address[#port] (bind to source "
+ "address/port)\n"
+ " -c class (specify query class)\n"
+ " -f filename (batch mode)\n"
+ " -k keyfile (specify tsig key file)\n"
+ " -m (enable memory usage "
+ "debugging)\n"
+ " -p port (specify port number)\n"
+ " -q name (specify query name)\n"
+ " -r (do not read ~/.digrc)\n"
+ " -t type (specify query type)\n"
+ " -u (display times in usec "
+ "instead of msec)\n"
+ " -x dot-notation (shortcut for reverse "
+ "lookups)\n"
+ " -y [hmac:]name:key (specify named base64 tsig "
+ "key)\n"
+ " d-opt is of the form +keyword[=value], where keyword "
+ "is:\n"
+ " +[no]aaflag (Set AA flag in query "
+ "(+[no]aaflag))\n"
+ " +[no]aaonly (Set AA flag in query "
+ "(+[no]aaflag))\n"
+ " +[no]additional (Control display of "
+ "additional section)\n"
+ " +[no]adflag (Set AD flag in query "
+ "(default on))\n"
+ " +[no]all (Set or clear all display "
+ "flags)\n"
+ " +[no]answer (Control display of answer "
+ "section)\n"
+ " +[no]authority (Control display of "
+ "authority section)\n"
+ " +[no]badcookie (Retry BADCOOKIE "
+ "responses)\n"
+ " +[no]besteffort (Try to parse even illegal "
+ "messages)\n"
+ " +bufsize[=###] (Set EDNS0 Max UDP packet "
+ "size)\n"
+ " +[no]cdflag (Set checking disabled "
+ "flag in query)\n"
+ " +[no]class (Control display of class "
+ "in records)\n"
+ " +[no]cmd (Control display of "
+ "command line -\n"
+ " global option)\n"
+ " +[no]comments (Control display of packet "
+ "header\n"
+ " and section name "
+ "comments)\n"
+ " +[no]cookie (Add a COOKIE option to "
+ "the request)\n"
+ " +[no]crypto (Control display of "
+ "cryptographic\n"
+ " fields in records)\n"
+ " +[no]defname (Use search list "
+ "(+[no]search))\n"
+ " +[no]dnssec (Request DNSSEC records)\n"
+ " +domain=### (Set default domainname)\n"
+ " +[no]dscp[=###] (Set the DSCP value to ### "
+ "[0..63])\n"
+ " +[no]edns[=###] (Set EDNS version) [0]\n"
+ " +ednsflags=### (Set EDNS flag bits)\n"
+ " +[no]ednsnegotiation (Set EDNS version "
+ "negotiation)\n"
+ " +ednsopt=###[:value] (Send specified EDNS "
+ "option)\n"
+ " +noednsopt (Clear list of +ednsopt "
+ "options)\n"
+ " +[no]expandaaaa (Expand AAAA records)\n"
+ " +[no]expire (Request time to expire)\n"
+ " +[no]fail (Don't try next server on "
+ "SERVFAIL)\n"
+ " +[no]header-only (Send query without a "
+ "question section)\n"
+ " +[no]identify (ID responders in short "
+ "answers)\n"
+#ifdef HAVE_LIBIDN2
+ " +[no]idnin (Parse IDN names "
+ "[default=on on tty])\n"
+ " +[no]idnout (Convert IDN response "
+ "[default=on on tty])\n"
+#endif /* ifdef HAVE_LIBIDN2 */
+ " +[no]ignore (Don't revert to TCP for "
+ "TC responses.)\n"
+ " +[no]keepalive (Request EDNS TCP "
+ "keepalive)\n"
+ " +[no]keepopen (Keep the TCP socket open "
+ "between "
+ "queries)\n"
+ " +[no]mapped (Allow mapped IPv4 over "
+ "IPv6)\n"
+ " +[no]multiline (Print records in an "
+ "expanded format)\n"
+ " +ndots=### (Set search NDOTS value)\n"
+ " +[no]nsid (Request Name Server ID)\n"
+ " +[no]nssearch (Search all authoritative "
+ "nameservers)\n"
+ " +[no]onesoa (AXFR prints only one soa "
+ "record)\n"
+ " +[no]opcode=### (Set the opcode of the "
+ "request)\n"
+ " +padding=### (Set padding block size "
+ "[0])\n"
+ " +[no]qr (Print question before "
+ "sending)\n"
+ " +[no]question (Control display of "
+ "question section)\n"
+ " +[no]raflag (Set RA flag in query "
+ "(+[no]raflag))\n"
+ " +[no]rdflag (Recursive mode "
+ "(+[no]recurse))\n"
+ " +[no]recurse (Recursive mode "
+ "(+[no]rdflag))\n"
+ " +retry=### (Set number of UDP "
+ "retries) [2]\n"
+ " +[no]rrcomments (Control display of "
+ "per-record "
+ "comments)\n"
+ " +[no]search (Set whether to use "
+ "searchlist)\n"
+ " +[no]short (Display nothing except "
+ "short\n"
+ " form of answers - global "
+ "option)\n"
+ " +[no]showsearch (Search with intermediate "
+ "results)\n"
+ " +[no]split=## (Split hex/base64 fields "
+ "into chunks)\n"
+ " +[no]stats (Control display of "
+ "statistics)\n"
+ " +subnet=addr (Set edns-client-subnet "
+ "option)\n"
+ " +[no]tcflag (Set TC flag in query "
+ "(+[no]tcflag))\n"
+ " +[no]tcp (TCP mode (+[no]vc))\n"
+ " +timeout=### (Set query timeout) [5]\n"
+ " +[no]trace (Trace delegation down "
+ "from root "
+ "[+dnssec])\n"
+ " +tries=### (Set number of UDP "
+ "attempts) [3]\n"
+ " +[no]ttlid (Control display of ttls "
+ "in records)\n"
+ " +[no]ttlunits (Display TTLs in "
+ "human-readable units)\n"
+ " +[no]unexpected (Print replies from "
+ "unexpected sources\n"
+ " default=off)\n"
+ " +[no]unknownformat (Print RDATA in RFC 3597 "
+ "\"unknown\" "
+ "format)\n"
+ " +[no]vc (TCP mode (+[no]tcp))\n"
+ " +[no]yaml (Present the results as "
+ "YAML)\n"
+ " +[no]zflag (Set Z flag in query)\n"
+ " global d-opts and servers (before host name) affect all "
+ "queries.\n"
+ " local d-opts and servers (after host name) affect only "
+ "that lookup.\n"
+ " -h (print help and exit)\n"
+ " -v (print version and exit)\n",
+ stdout);
+}
+
+/*%
+ * Callback from dighost.c to print the received message.
+ */
+static void
+received(unsigned int bytes, isc_sockaddr_t *from, dig_query_t *query) {
+ uint64_t diff;
+ time_t tnow;
+ struct tm tmnow;
+#ifdef WIN32
+ wchar_t time_str[100];
+#else /* ifdef WIN32 */
+ char time_str[100];
+#endif /* ifdef WIN32 */
+ char fromtext[ISC_SOCKADDR_FORMATSIZE];
+
+ isc_sockaddr_format(from, fromtext, sizeof(fromtext));
+
+ if (short_form || yaml) {
+ return;
+ }
+
+ if (query->lookup->stats) {
+ diff = isc_time_microdiff(&query->time_recv, &query->time_sent);
+ if (query->lookup->use_usec) {
+ printf(";; Query time: %ld usec\n", (long)diff);
+ } else {
+ printf(";; Query time: %ld msec\n", (long)diff / 1000);
+ }
+ printf(";; SERVER: %s(%s)\n", fromtext, query->servname);
+ time(&tnow);
+ (void)localtime_r(&tnow, &tmnow);
+
+#ifdef WIN32
+ /*
+ * On Windows, time zone name ("%Z") may be a localized
+ * wide-character string, which strftime() handles incorrectly.
+ */
+ if (wcsftime(time_str, sizeof(time_str) / sizeof(time_str[0]),
+ L"%a %b %d %H:%M:%S %Z %Y", &tmnow) > 0U)
+ {
+ printf(";; WHEN: %ls\n", time_str);
+ }
+#else /* ifdef WIN32 */
+ if (strftime(time_str, sizeof(time_str),
+ "%a %b %d %H:%M:%S %Z %Y", &tmnow) > 0U)
+ {
+ printf(";; WHEN: %s\n", time_str);
+ }
+#endif /* ifdef WIN32 */
+ if (query->lookup->doing_xfr) {
+ printf(";; XFR size: %u records (messages %u, "
+ "bytes %" PRIu64 ")\n",
+ query->rr_count, query->msg_count,
+ query->byte_count);
+ } else {
+ printf(";; MSG SIZE rcvd: %u\n", bytes);
+ }
+ if (tsigkey != NULL) {
+ if (!validated) {
+ puts(";; WARNING -- Some TSIG could not "
+ "be validated");
+ }
+ }
+ if ((tsigkey == NULL) && (keysecret[0] != 0)) {
+ puts(";; WARNING -- TSIG key was not used.");
+ }
+ puts("");
+ } else if (query->lookup->identify) {
+ diff = isc_time_microdiff(&query->time_recv, &query->time_sent);
+ if (query->lookup->use_usec) {
+ printf(";; Received %" PRIu64 " bytes "
+ "from %s(%s) in %ld us\n\n",
+ query->lookup->doing_xfr ? query->byte_count
+ : (uint64_t)bytes,
+ fromtext, query->userarg, (long)diff);
+ } else {
+ printf(";; Received %" PRIu64 " bytes "
+ "from %s(%s) in %ld ms\n\n",
+ query->lookup->doing_xfr ? query->byte_count
+ : (uint64_t)bytes,
+ fromtext, query->userarg, (long)diff / 1000);
+ }
+ }
+}
+
+/*
+ * Callback from dighost.c to print that it is trying a server.
+ * Not used in dig.
+ * XXX print_trying
+ */
+static void
+trying(char *frm, dig_lookup_t *lookup) {
+ UNUSED(frm);
+ UNUSED(lookup);
+}
+
+/*%
+ * Internal print routine used to print short form replies.
+ */
+static isc_result_t
+say_message(dns_rdata_t *rdata, dig_query_t *query, isc_buffer_t *buf) {
+ isc_result_t result;
+ uint64_t diff;
+ char store[sizeof(" in 18446744073709551616 us.")];
+ unsigned int styleflags = 0;
+
+ if (query->lookup->trace || query->lookup->ns_search_only) {
+ result = dns_rdatatype_totext(rdata->type, buf);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ ADD_STRING(buf, " ");
+ }
+
+ /* Turn on rrcomments if explicitly enabled */
+ if (query->lookup->rrcomments > 0) {
+ styleflags |= DNS_STYLEFLAG_RRCOMMENT;
+ }
+ if (query->lookup->nocrypto) {
+ styleflags |= DNS_STYLEFLAG_NOCRYPTO;
+ }
+ if (query->lookup->print_unknown_format) {
+ styleflags |= DNS_STYLEFLAG_UNKNOWNFORMAT;
+ }
+ if (query->lookup->expandaaaa) {
+ styleflags |= DNS_STYLEFLAG_EXPANDAAAA;
+ }
+ result = dns_rdata_tofmttext(rdata, NULL, styleflags, 0, splitwidth,
+ " ", buf);
+ if (result == ISC_R_NOSPACE) {
+ return (result);
+ }
+ check_result(result, "dns_rdata_totext");
+ if (query->lookup->identify) {
+ diff = isc_time_microdiff(&query->time_recv, &query->time_sent);
+ ADD_STRING(buf, " from server ");
+ ADD_STRING(buf, query->servname);
+ if (query->lookup->use_usec) {
+ snprintf(store, sizeof(store), " in %" PRIu64 " us.",
+ diff);
+ } else {
+ snprintf(store, sizeof(store), " in %" PRIu64 " ms.",
+ diff / 1000);
+ }
+ ADD_STRING(buf, store);
+ }
+ ADD_STRING(buf, "\n");
+ return (ISC_R_SUCCESS);
+}
+
+/*%
+ * short_form message print handler. Calls above say_message()
+ */
+static isc_result_t
+short_answer(dns_message_t *msg, dns_messagetextflag_t flags, isc_buffer_t *buf,
+ dig_query_t *query) {
+ dns_name_t *name;
+ dns_rdataset_t *rdataset;
+ isc_result_t result, loopresult;
+ dns_name_t empty_name;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+
+ UNUSED(flags);
+
+ dns_name_init(&empty_name, NULL);
+ result = dns_message_firstname(msg, DNS_SECTION_ANSWER);
+ if (result == ISC_R_NOMORE) {
+ return (ISC_R_SUCCESS);
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ for (;;) {
+ name = NULL;
+ dns_message_currentname(msg, DNS_SECTION_ANSWER, &name);
+
+ for (rdataset = ISC_LIST_HEAD(name->list); rdataset != NULL;
+ rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ loopresult = dns_rdataset_first(rdataset);
+ while (loopresult == ISC_R_SUCCESS) {
+ dns_rdataset_current(rdataset, &rdata);
+ result = say_message(&rdata, query, buf);
+ if (result == ISC_R_NOSPACE) {
+ return (result);
+ }
+ check_result(result, "say_message");
+ loopresult = dns_rdataset_next(rdataset);
+ dns_rdata_reset(&rdata);
+ }
+ }
+ result = dns_message_nextname(msg, DNS_SECTION_ANSWER);
+ if (result == ISC_R_NOMORE) {
+ break;
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+
+ return (ISC_R_SUCCESS);
+}
+
+static bool
+isdotlocal(dns_message_t *msg) {
+ isc_result_t result;
+ static unsigned char local_ndata[] = { "\005local" };
+ static unsigned char local_offsets[] = { 0, 6 };
+ static dns_name_t local = DNS_NAME_INITABSOLUTE(local_ndata,
+ local_offsets);
+
+ for (result = dns_message_firstname(msg, DNS_SECTION_QUESTION);
+ result == ISC_R_SUCCESS;
+ result = dns_message_nextname(msg, DNS_SECTION_QUESTION))
+ {
+ dns_name_t *name = NULL;
+ dns_message_currentname(msg, DNS_SECTION_QUESTION, &name);
+ if (dns_name_issubdomain(name, &local)) {
+ return (true);
+ }
+ }
+ return (false);
+}
+
+/*
+ * Callback from dighost.c to print the reply from a server
+ */
+static isc_result_t
+printmessage(dig_query_t *query, const isc_buffer_t *msgbuf, dns_message_t *msg,
+ bool headers) {
+ isc_result_t result;
+ dns_messagetextflag_t flags;
+ isc_buffer_t *buf = NULL;
+ unsigned int len = OUTPUTBUF;
+ dns_master_style_t *style = NULL;
+ unsigned int styleflags = 0;
+ bool isquery = (msg == query->lookup->sendmsg);
+
+ UNUSED(msgbuf);
+
+ styleflags |= DNS_STYLEFLAG_REL_OWNER;
+ if (yaml) {
+ msg->indent.string = " ";
+ msg->indent.count = 3;
+ styleflags |= DNS_STYLEFLAG_YAML;
+ } else {
+ if (query->lookup->comments) {
+ styleflags |= DNS_STYLEFLAG_COMMENT;
+ }
+ if (query->lookup->print_unknown_format) {
+ styleflags |= DNS_STYLEFLAG_UNKNOWNFORMAT;
+ }
+ /* Turn on rrcomments if explicitly enabled */
+ if (query->lookup->rrcomments > 0) {
+ styleflags |= DNS_STYLEFLAG_RRCOMMENT;
+ }
+ if (query->lookup->ttlunits) {
+ styleflags |= DNS_STYLEFLAG_TTL_UNITS;
+ }
+ if (query->lookup->nottl) {
+ styleflags |= DNS_STYLEFLAG_NO_TTL;
+ }
+ if (query->lookup->noclass) {
+ styleflags |= DNS_STYLEFLAG_NO_CLASS;
+ }
+ if (query->lookup->nocrypto) {
+ styleflags |= DNS_STYLEFLAG_NOCRYPTO;
+ }
+ if (query->lookup->expandaaaa) {
+ styleflags |= DNS_STYLEFLAG_EXPANDAAAA;
+ }
+ if (query->lookup->multiline) {
+ styleflags |= DNS_STYLEFLAG_OMIT_OWNER;
+ styleflags |= DNS_STYLEFLAG_OMIT_CLASS;
+ styleflags |= DNS_STYLEFLAG_REL_DATA;
+ styleflags |= DNS_STYLEFLAG_OMIT_TTL;
+ styleflags |= DNS_STYLEFLAG_TTL;
+ styleflags |= DNS_STYLEFLAG_MULTILINE;
+ /* Turn on rrcomments unless explicitly disabled */
+ if (query->lookup->rrcomments >= 0) {
+ styleflags |= DNS_STYLEFLAG_RRCOMMENT;
+ }
+ }
+ }
+ if (query->lookup->multiline ||
+ (query->lookup->nottl && query->lookup->noclass))
+ {
+ result = dns_master_stylecreate(&style, styleflags, 24, 24, 24,
+ 32, 80, 8, splitwidth, mctx);
+ } else if (query->lookup->nottl || query->lookup->noclass) {
+ result = dns_master_stylecreate(&style, styleflags, 24, 24, 32,
+ 40, 80, 8, splitwidth, mctx);
+ } else {
+ result = dns_master_stylecreate(&style, styleflags, 24, 32, 40,
+ 48, 80, 8, splitwidth, mctx);
+ }
+ check_result(result, "dns_master_stylecreate");
+
+ if (query->lookup->cmdline[0] != 0) {
+ if (!short_form && printcmd) {
+ fputs(query->lookup->cmdline, stdout);
+ }
+ query->lookup->cmdline[0] = '\0';
+ }
+ debug("printmessage(%s %s %s)", headers ? "headers" : "noheaders",
+ query->lookup->comments ? "comments" : "nocomments",
+ short_form ? "short_form" : "long_form");
+
+ flags = 0;
+ if (!headers) {
+ flags |= DNS_MESSAGETEXTFLAG_NOHEADERS;
+ flags |= DNS_MESSAGETEXTFLAG_NOCOMMENTS;
+ }
+ if (query->lookup->onesoa &&
+ query->lookup->rdtype == dns_rdatatype_axfr)
+ {
+ flags |= (query->msg_count == 0) ? DNS_MESSAGETEXTFLAG_ONESOA
+ : DNS_MESSAGETEXTFLAG_OMITSOA;
+ }
+ if (!query->lookup->comments) {
+ flags |= DNS_MESSAGETEXTFLAG_NOCOMMENTS;
+ }
+
+ isc_buffer_allocate(mctx, &buf, len);
+
+ if (yaml) {
+ enum { Q = 0x1, R = 0x2 }; /* Q:query; R:ecursive */
+ unsigned int tflag = 0;
+ isc_sockaddr_t saddr;
+ char sockstr[ISC_SOCKADDR_FORMATSIZE];
+ uint16_t sport;
+ char *hash;
+ int pf;
+
+ printf("-\n");
+ printf(" type: MESSAGE\n");
+ printf(" message:\n");
+
+ if (isquery) {
+ tflag |= Q;
+ if ((msg->flags & DNS_MESSAGEFLAG_RD) != 0) {
+ tflag |= R;
+ }
+ } else if (((msg->flags & DNS_MESSAGEFLAG_RD) != 0) &&
+ ((msg->flags & DNS_MESSAGEFLAG_RA) != 0))
+ {
+ tflag |= R;
+ }
+
+ if (tflag == (Q | R)) {
+ printf(" type: RECURSIVE_QUERY\n");
+ } else if (tflag == Q) {
+ printf(" type: AUTH_QUERY\n");
+ } else if (tflag == R) {
+ printf(" type: RECURSIVE_RESPONSE\n");
+ } else {
+ printf(" type: AUTH_RESPONSE\n");
+ }
+
+ if (!isc_time_isepoch(&query->time_sent)) {
+ char tbuf[100];
+ if (query->lookup->use_usec) {
+ isc_time_formatISO8601us(&query->time_sent,
+ tbuf, sizeof(tbuf));
+ } else {
+ isc_time_formatISO8601ms(&query->time_sent,
+ tbuf, sizeof(tbuf));
+ }
+ printf(" query_time: !!timestamp %s\n", tbuf);
+ }
+
+ if (!isquery && !isc_time_isepoch(&query->time_recv)) {
+ char tbuf[100];
+ if (query->lookup->use_usec) {
+ isc_time_formatISO8601us(&query->time_recv,
+ tbuf, sizeof(tbuf));
+ } else {
+ isc_time_formatISO8601ms(&query->time_recv,
+ tbuf, sizeof(tbuf));
+ }
+ printf(" response_time: !!timestamp %s\n", tbuf);
+ }
+
+ printf(" message_size: %ub\n",
+ isc_buffer_usedlength(msgbuf));
+
+ pf = isc_sockaddr_pf(&query->sockaddr);
+ if (pf == PF_INET || pf == PF_INET6) {
+ printf(" socket_family: %s\n",
+ pf == PF_INET ? "INET" : "INET6");
+
+ printf(" socket_protocol: %s\n",
+ query->lookup->tcp_mode ? "TCP" : "UDP");
+
+ sport = isc_sockaddr_getport(&query->sockaddr);
+ isc_sockaddr_format(&query->sockaddr, sockstr,
+ sizeof(sockstr));
+ hash = strchr(sockstr, '#');
+ if (hash != NULL) {
+ *hash = '\0';
+ }
+ if (strcmp(sockstr, "::") == 0) {
+ strlcat(sockstr, "0", sizeof(sockstr));
+ }
+
+ printf(" response_address: \"%s\"\n", sockstr);
+ printf(" response_port: %u\n", sport);
+ }
+
+ if (query->sock != NULL &&
+ isc_socket_getsockname(query->sock, &saddr) ==
+ ISC_R_SUCCESS)
+ {
+ sport = isc_sockaddr_getport(&saddr);
+ isc_sockaddr_format(&saddr, sockstr, sizeof(sockstr));
+ hash = strchr(sockstr, '#');
+ if (hash != NULL) {
+ *hash = '\0';
+ }
+ if (strcmp(sockstr, "::") == 0) {
+ strlcat(sockstr, "0", sizeof(sockstr));
+ }
+
+ printf(" query_address: \"%s\"\n", sockstr);
+ printf(" query_port: %u\n", sport);
+ }
+
+ printf(" %s:\n", isquery ? "query_message_data"
+ : "response_message_data");
+ result = dns_message_headertotext(msg, style, flags, buf);
+ } else if (query->lookup->comments && !short_form) {
+ if (query->lookup->cmdline[0] != '\0' && printcmd) {
+ printf("; %s\n", query->lookup->cmdline);
+ }
+ if (msg == query->lookup->sendmsg) {
+ printf(";; Sending:\n");
+ } else {
+ printf(";; Got answer:\n");
+ }
+
+ if (headers) {
+ if (isdotlocal(msg)) {
+ printf(";; WARNING: .local is reserved for "
+ "Multicast DNS\n;; You are currently "
+ "testing what happens when an mDNS "
+ "query is leaked to DNS\n");
+ }
+ printf(";; ->>HEADER<<- opcode: %s, status: %s, "
+ "id: %u\n",
+ opcodetext[msg->opcode],
+ rcode_totext(msg->rcode), msg->id);
+ printf(";; flags:");
+ if ((msg->flags & DNS_MESSAGEFLAG_QR) != 0) {
+ printf(" qr");
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_AA) != 0) {
+ printf(" aa");
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_TC) != 0) {
+ printf(" tc");
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_RD) != 0) {
+ printf(" rd");
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_RA) != 0) {
+ printf(" ra");
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_AD) != 0) {
+ printf(" ad");
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_CD) != 0) {
+ printf(" cd");
+ }
+ if ((msg->flags & 0x0040U) != 0) {
+ printf("; MBZ: 0x4");
+ }
+
+ printf("; QUERY: %u, ANSWER: %u, "
+ "AUTHORITY: %u, ADDITIONAL: %u\n",
+ msg->counts[DNS_SECTION_QUESTION],
+ msg->counts[DNS_SECTION_ANSWER],
+ msg->counts[DNS_SECTION_AUTHORITY],
+ msg->counts[DNS_SECTION_ADDITIONAL]);
+
+ if (msg != query->lookup->sendmsg &&
+ (msg->flags & DNS_MESSAGEFLAG_RD) != 0 &&
+ (msg->flags & DNS_MESSAGEFLAG_RA) == 0)
+ {
+ printf(";; WARNING: recursion requested "
+ "but not available\n");
+ }
+ }
+ if (msg != query->lookup->sendmsg &&
+ query->lookup->edns != -1 && msg->opt == NULL &&
+ (msg->rcode == dns_rcode_formerr ||
+ msg->rcode == dns_rcode_notimp))
+ {
+ printf("\n;; WARNING: EDNS query returned status "
+ "%s - retry with '%s+noedns'\n",
+ rcode_totext(msg->rcode),
+ query->lookup->dnssec ? "+nodnssec " : "");
+ }
+ if (msg != query->lookup->sendmsg && extrabytes != 0U) {
+ printf(";; WARNING: Message has %u extra byte%s at "
+ "end\n",
+ extrabytes, extrabytes != 0 ? "s" : "");
+ }
+ }
+
+repopulate_buffer:
+
+ if (query->lookup->comments && headers && !short_form) {
+ result = dns_message_pseudosectiontotext(
+ msg, DNS_PSEUDOSECTION_OPT, style, flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ buftoosmall:
+ len += OUTPUTBUF;
+ isc_buffer_free(&buf);
+ isc_buffer_allocate(mctx, &buf, len);
+ goto repopulate_buffer;
+ }
+ check_result(result, "dns_message_pseudosectiontotext");
+ }
+
+ if (query->lookup->section_question && headers) {
+ if (!short_form) {
+ result = dns_message_sectiontotext(
+ msg, DNS_SECTION_QUESTION, style, flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "dns_message_sectiontotext");
+ }
+ }
+ if (query->lookup->section_answer) {
+ if (!short_form) {
+ result = dns_message_sectiontotext(
+ msg, DNS_SECTION_ANSWER, style, flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "dns_message_sectiontotext");
+ } else {
+ result = short_answer(msg, flags, buf, query);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "short_answer");
+ }
+ }
+ if (query->lookup->section_authority) {
+ if (!short_form) {
+ result = dns_message_sectiontotext(
+ msg, DNS_SECTION_AUTHORITY, style, flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "dns_message_sectiontotext");
+ }
+ }
+ if (query->lookup->section_additional) {
+ if (!short_form) {
+ result = dns_message_sectiontotext(
+ msg, DNS_SECTION_ADDITIONAL, style, flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "dns_message_sectiontotext");
+ /*
+ * Only print the signature on the first record.
+ */
+ if (headers) {
+ result = dns_message_pseudosectiontotext(
+ msg, DNS_PSEUDOSECTION_TSIG, style,
+ flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "dns_message_"
+ "pseudosectiontotext");
+ result = dns_message_pseudosectiontotext(
+ msg, DNS_PSEUDOSECTION_SIG0, style,
+ flags, buf);
+ if (result == ISC_R_NOSPACE) {
+ goto buftoosmall;
+ }
+ check_result(result, "dns_message_"
+ "pseudosectiontotext");
+ }
+ }
+ }
+
+ if (headers && query->lookup->comments && !short_form && !yaml) {
+ printf("\n");
+ }
+
+ printf("%.*s", (int)isc_buffer_usedlength(buf),
+ (char *)isc_buffer_base(buf));
+ isc_buffer_free(&buf);
+
+ if (style != NULL) {
+ dns_master_styledestroy(&style, mctx);
+ }
+ return (result);
+}
+
+/*%
+ * print the greeting message when the program first starts up.
+ */
+static void
+printgreeting(int argc, char **argv, dig_lookup_t *lookup) {
+ int i;
+ static bool first = true;
+ char append[MXNAME];
+
+ if (printcmd) {
+ snprintf(lookup->cmdline, sizeof(lookup->cmdline),
+ "%s; <<>> DiG " VERSION " <<>>", first ? "\n" : "");
+ i = 1;
+ while (i < argc) {
+ snprintf(append, sizeof(append), " %s", argv[i++]);
+ strlcat(lookup->cmdline, append,
+ sizeof(lookup->cmdline));
+ }
+ strlcat(lookup->cmdline, "\n", sizeof(lookup->cmdline));
+ if (first && addresscount != 0) {
+ snprintf(append, sizeof(append),
+ "; (%d server%s found)\n", addresscount,
+ addresscount > 1 ? "s" : "");
+ strlcat(lookup->cmdline, append,
+ sizeof(lookup->cmdline));
+ }
+ if (first) {
+ snprintf(append, sizeof(append),
+ ";; global options:%s%s\n",
+ short_form ? " +short" : "",
+ printcmd ? " +cmd" : "");
+ first = false;
+ strlcat(lookup->cmdline, append,
+ sizeof(lookup->cmdline));
+ }
+ }
+}
+
+/*%
+ * We're not using isc_commandline_parse() here since the command line
+ * syntax of dig is quite a bit different from that which can be described
+ * by that routine.
+ * XXX doc options
+ */
+
+static void
+plus_option(char *option, bool is_batchfile, dig_lookup_t *lookup) {
+ isc_result_t result;
+ char *cmd, *value, *last = NULL, *code, *extra;
+ uint32_t num;
+ bool state = true;
+ size_t n;
+
+ INSIST(option != NULL);
+
+ if ((cmd = strtok_r(option, "=", &last)) == NULL) {
+ printf(";; Invalid option %s\n", option);
+ return;
+ }
+ if (strncasecmp(cmd, "no", 2) == 0) {
+ cmd += 2;
+ state = false;
+ }
+ /* parse the rest of the string */
+ value = strtok_r(NULL, "", &last);
+
+#define FULLCHECK(A) \
+ do { \
+ size_t _l = strlen(cmd); \
+ if (_l >= sizeof(A) || strncasecmp(cmd, A, _l) != 0) \
+ goto invalid_option; \
+ } while (0)
+#define FULLCHECK2(A, B) \
+ do { \
+ size_t _l = strlen(cmd); \
+ if ((_l >= sizeof(A) || strncasecmp(cmd, A, _l) != 0) && \
+ (_l >= sizeof(B) || strncasecmp(cmd, B, _l) != 0)) \
+ goto invalid_option; \
+ } while (0)
+
+ switch (cmd[0]) {
+ case 'a':
+ switch (cmd[1]) {
+ case 'a': /* aaonly / aaflag */
+ FULLCHECK2("aaonly", "aaflag");
+ lookup->aaonly = state;
+ break;
+ case 'd':
+ switch (cmd[2]) {
+ case 'd': /* additional */
+ FULLCHECK("additional");
+ lookup->section_additional = state;
+ break;
+ case 'f': /* adflag */
+ case '\0': /* +ad is a synonym for +adflag */
+ FULLCHECK("adflag");
+ lookup->adflag = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'l': /* all */
+ FULLCHECK("all");
+ lookup->section_question = state;
+ lookup->section_authority = state;
+ lookup->section_answer = state;
+ lookup->section_additional = state;
+ lookup->comments = state;
+ lookup->stats = state;
+ printcmd = state;
+ break;
+ case 'n': /* answer */
+ FULLCHECK("answer");
+ lookup->section_answer = state;
+ break;
+ case 'u': /* authority */
+ FULLCHECK("authority");
+ lookup->section_authority = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'b':
+ switch (cmd[1]) {
+ case 'a': /* badcookie */
+ FULLCHECK("badcookie");
+ lookup->badcookie = state;
+ break;
+ case 'e': /* besteffort */
+ FULLCHECK("besteffort");
+ lookup->besteffort = state;
+ break;
+ case 'u': /* bufsize */
+ FULLCHECK("bufsize");
+ if (!state) {
+ goto invalid_option;
+ }
+ if (value == NULL) {
+ lookup->udpsize = DEFAULT_EDNS_BUFSIZE;
+ break;
+ }
+ result = parse_uint(&num, value, COMMSIZE,
+ "buffer size");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse buffer size");
+ goto exit_or_usage;
+ }
+ lookup->udpsize = num;
+ if (lookup->udpsize == 0) {
+ lookup->edns = -1;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'c':
+ switch (cmd[1]) {
+ case 'd': /* cdflag */
+ switch (cmd[2]) {
+ case 'f': /* cdflag */
+ case '\0': /* +cd is a synonym for +cdflag */
+ FULLCHECK("cdflag");
+ lookup->cdflag = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'l': /* class */
+ /* keep +cl for backwards compatibility */
+ FULLCHECK2("cl", "class");
+ lookup->noclass = !state;
+ break;
+ case 'm': /* cmd */
+ FULLCHECK("cmd");
+ printcmd = state;
+ break;
+ case 'o': /* comments */
+ switch (cmd[2]) {
+ case 'm':
+ FULLCHECK("comments");
+ lookup->comments = state;
+ if (lookup == default_lookup) {
+ pluscomm = state;
+ }
+ break;
+ case 'o': /* cookie */
+ FULLCHECK("cookie");
+ if (state && lookup->edns == -1) {
+ lookup->edns = DEFAULT_EDNS_VERSION;
+ }
+ lookup->sendcookie = state;
+ if (value != NULL) {
+ n = strlcpy(hexcookie, value,
+ sizeof(hexcookie));
+ if (n >= sizeof(hexcookie)) {
+ warn("COOKIE data too large");
+ goto exit_or_usage;
+ }
+ lookup->cookie = hexcookie;
+ } else {
+ lookup->cookie = NULL;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'r':
+ FULLCHECK("crypto");
+ lookup->nocrypto = !state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'd':
+ switch (cmd[1]) {
+ case 'e': /* defname */
+ FULLCHECK("defname");
+ if (!lookup->trace) {
+ usesearch = state;
+ }
+ break;
+ case 'n': /* dnssec */
+ FULLCHECK("dnssec");
+ dnssec:
+ if (state && lookup->edns == -1) {
+ lookup->edns = DEFAULT_EDNS_VERSION;
+ }
+ lookup->dnssec = state;
+ break;
+ case 'o': /* domain ... but treat "do" as synonym for dnssec */
+ if (cmd[2] == '\0') {
+ goto dnssec;
+ }
+ FULLCHECK("domain");
+ if (value == NULL) {
+ goto need_value;
+ }
+ if (!state) {
+ goto invalid_option;
+ }
+ strlcpy(domainopt, value, sizeof(domainopt));
+ break;
+ case 's': /* dscp */
+ FULLCHECK("dscp");
+ if (!state) {
+ lookup->dscp = -1;
+ break;
+ }
+ if (value == NULL) {
+ goto need_value;
+ }
+ result = parse_uint(&num, value, 0x3f, "DSCP");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse DSCP value");
+ goto exit_or_usage;
+ }
+ lookup->dscp = num;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'e':
+ switch (cmd[1]) {
+ case 'd':
+ switch (cmd[2]) {
+ case 'n':
+ switch (cmd[3]) {
+ case 's':
+ switch (cmd[4]) {
+ case 0:
+ FULLCHECK("edns");
+ if (!state) {
+ lookup->edns = -1;
+ break;
+ }
+ if (value == NULL) {
+ lookup->edns =
+ DEFAULT_EDNS_VERSION;
+ break;
+ }
+ result = parse_uint(&num, value,
+ 255,
+ "edns");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse "
+ "edns");
+ goto exit_or_usage;
+ }
+ lookup->edns = num;
+ break;
+ case 'f':
+ FULLCHECK("ednsflags");
+ if (!state) {
+ lookup->ednsflags = 0;
+ break;
+ }
+ if (value == NULL) {
+ lookup->ednsflags = 0;
+ break;
+ }
+ result = parse_xint(
+ &num, value, 0xffff,
+ "ednsflags");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse "
+ "ednsflags");
+ goto exit_or_usage;
+ }
+ lookup->ednsflags = num;
+ break;
+ case 'n':
+ FULLCHECK("ednsnegotiation");
+ lookup->ednsneg = state;
+ break;
+ case 'o':
+ FULLCHECK("ednsopt");
+ if (!state) {
+ lookup->ednsoptscnt = 0;
+ break;
+ }
+ code = NULL;
+ if (value != NULL) {
+ code = strtok_r(value,
+ ":",
+ &last);
+ }
+ if (code == NULL) {
+ warn("ednsopt no "
+ "code point "
+ "specified");
+ goto exit_or_usage;
+ }
+ extra = strtok_r(NULL, "\0",
+ &last);
+ save_opt(lookup, code, extra);
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'x':
+ switch (cmd[2]) {
+ case 'p':
+ switch (cmd[3]) {
+ case 'a':
+ FULLCHECK("expandaaaa");
+ lookup->expandaaaa = state;
+ break;
+ case 'i':
+ FULLCHECK("expire");
+ lookup->expire = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'f': /* fail */
+ FULLCHECK("fail");
+ lookup->servfail_stops = state;
+ break;
+ case 'h':
+ FULLCHECK("header-only");
+ lookup->header_only = state;
+ break;
+ case 'i':
+ switch (cmd[1]) {
+ case 'd': /* identify */
+ switch (cmd[2]) {
+ case 'e':
+ FULLCHECK("identify");
+ lookup->identify = state;
+ break;
+ case 'n':
+ switch (cmd[3]) {
+ case 'i':
+ FULLCHECK("idnin");
+#ifndef HAVE_LIBIDN2
+ fprintf(stderr, ";; IDN input support"
+ " not enabled\n");
+#else /* ifndef HAVE_LIBIDN2 */
+ lookup->idnin = state;
+#endif /* ifndef HAVE_LIBIDN2 */
+ break;
+ case 'o':
+ FULLCHECK("idnout");
+#ifndef HAVE_LIBIDN2
+ fprintf(stderr, ";; IDN output support"
+ " not enabled\n");
+#else /* ifndef HAVE_LIBIDN2 */
+ lookup->idnout = state;
+#endif /* ifndef HAVE_LIBIDN2 */
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'g': /* ignore */
+ default: /*
+ * Inherits default for compatibility (+[no]i*).
+ */
+ FULLCHECK("ignore");
+ lookup->ignore = state;
+ }
+ break;
+ case 'k':
+ switch (cmd[1]) {
+ case 'e':
+ switch (cmd[2]) {
+ case 'e':
+ switch (cmd[3]) {
+ case 'p':
+ switch (cmd[4]) {
+ case 'a':
+ FULLCHECK("keepalive");
+ lookup->tcp_keepalive = state;
+ break;
+ case 'o':
+ FULLCHECK("keepopen");
+ keep_open = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'm': /* multiline */
+ switch (cmd[1]) {
+ case 'a':
+ FULLCHECK("mapped");
+ lookup->mapped = state;
+ break;
+ case 'u':
+ FULLCHECK("multiline");
+ lookup->multiline = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'n':
+ switch (cmd[1]) {
+ case 'd': /* ndots */
+ FULLCHECK("ndots");
+ if (value == NULL) {
+ goto need_value;
+ }
+ if (!state) {
+ goto invalid_option;
+ }
+ result = parse_uint(&num, value, MAXNDOTS, "ndots");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse ndots");
+ goto exit_or_usage;
+ }
+ ndots = num;
+ break;
+ case 's':
+ switch (cmd[2]) {
+ case 'i': /* nsid */
+ FULLCHECK("nsid");
+ if (state && lookup->edns == -1) {
+ lookup->edns = DEFAULT_EDNS_VERSION;
+ }
+ lookup->nsid = state;
+ break;
+ case 's': /* nssearch */
+ FULLCHECK("nssearch");
+ lookup->ns_search_only = state;
+ if (state) {
+ lookup->trace_root = true;
+ lookup->recurse = true;
+ lookup->identify = true;
+ lookup->stats = false;
+ lookup->comments = false;
+ lookup->section_additional = false;
+ lookup->section_authority = false;
+ lookup->section_question = false;
+ lookup->rdtype = dns_rdatatype_ns;
+ lookup->rdtypeset = true;
+ short_form = true;
+ lookup->rrcomments = 0;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'o':
+ switch (cmd[1]) {
+ case 'n':
+ FULLCHECK("onesoa");
+ lookup->onesoa = state;
+ break;
+ case 'p':
+ FULLCHECK("opcode");
+ if (!state) {
+ lookup->opcode = 0; /* default - query */
+ break;
+ }
+ if (value == NULL) {
+ goto need_value;
+ }
+ for (num = 0;
+ num < sizeof(opcodetext) / sizeof(opcodetext[0]);
+ num++)
+ {
+ if (strcasecmp(opcodetext[num], value) == 0) {
+ break;
+ }
+ }
+ if (num < 16) {
+ lookup->opcode = (dns_opcode_t)num;
+ break;
+ }
+ result = parse_uint(&num, value, 15, "opcode");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse opcode");
+ goto exit_or_usage;
+ }
+ lookup->opcode = (dns_opcode_t)num;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'p':
+ FULLCHECK("padding");
+ if (state && lookup->edns == -1) {
+ lookup->edns = DEFAULT_EDNS_VERSION;
+ }
+ if (value == NULL) {
+ goto need_value;
+ }
+ result = parse_uint(&num, value, 512, "padding");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse padding");
+ goto exit_or_usage;
+ }
+ lookup->padding = (uint16_t)num;
+ break;
+ case 'q':
+ switch (cmd[1]) {
+ case 'r': /* qr */
+ FULLCHECK("qr");
+ lookup->qr = state;
+ break;
+ case 'u': /* question */
+ FULLCHECK("question");
+ lookup->section_question = state;
+ if (lookup == default_lookup) {
+ plusquest = state;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'r':
+ switch (cmd[1]) {
+ case 'a': /* raflag */
+ FULLCHECK("raflag");
+ lookup->raflag = state;
+ break;
+ case 'd': /* rdflag */
+ FULLCHECK("rdflag");
+ lookup->recurse = state;
+ break;
+ case 'e':
+ switch (cmd[2]) {
+ case 'c': /* recurse */
+ FULLCHECK("recurse");
+ lookup->recurse = state;
+ break;
+ case 't': /* retry / retries */
+ FULLCHECK2("retry", "retries");
+ if (value == NULL) {
+ goto need_value;
+ }
+ if (!state) {
+ goto invalid_option;
+ }
+ result = parse_uint(&lookup->retries, value,
+ MAXTRIES - 1, "retries");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse retries");
+ goto exit_or_usage;
+ }
+ lookup->retries++;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'r': /* rrcomments */
+ FULLCHECK("rrcomments");
+ lookup->rrcomments = state ? 1 : -1;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 's':
+ switch (cmd[1]) {
+ case 'e': /* search */
+ FULLCHECK("search");
+ if (!lookup->trace) {
+ usesearch = state;
+ }
+ break;
+ case 'h':
+ if (cmd[2] != 'o') {
+ goto invalid_option;
+ }
+ switch (cmd[3]) {
+ case 'r': /* short */
+ FULLCHECK("short");
+ short_form = state;
+ if (state) {
+ printcmd = false;
+ lookup->section_additional = false;
+ lookup->section_answer = true;
+ lookup->section_authority = false;
+ lookup->section_question = false;
+ lookup->comments = false;
+ lookup->stats = false;
+ lookup->rrcomments = -1;
+ }
+ break;
+ case 'w': /* showsearch */
+ FULLCHECK("showsearch");
+ if (!lookup->trace) {
+ showsearch = state;
+ usesearch = state;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'i': /* sigchase */
+ FULLCHECK("sigchase");
+ fprintf(stderr, ";; +sigchase option is deprecated");
+ break;
+ case 'p': /* split */
+ FULLCHECK("split");
+ if (value != NULL && !state) {
+ goto invalid_option;
+ }
+ if (!state) {
+ splitwidth = 0;
+ break;
+ } else if (value == NULL) {
+ break;
+ }
+
+ result = parse_uint(&splitwidth, value, 1023, "split");
+ if ((splitwidth % 4) != 0U) {
+ splitwidth = ((splitwidth + 3) / 4) * 4;
+ fprintf(stderr,
+ ";; Warning, split must be "
+ "a multiple of 4; adjusting "
+ "to %u\n",
+ splitwidth);
+ }
+ /*
+ * There is an adjustment done in the
+ * totext_<rrtype>() functions which causes
+ * splitwidth to shrink. This is okay when we're
+ * using the default width but incorrect in this
+ * case, so we correct for it
+ */
+ if (splitwidth) {
+ splitwidth += 3;
+ }
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse split");
+ goto exit_or_usage;
+ }
+ break;
+ case 't': /* stats */
+ FULLCHECK("stats");
+ lookup->stats = state;
+ break;
+ case 'u': /* subnet */
+ FULLCHECK("subnet");
+ if (state && value == NULL) {
+ goto need_value;
+ }
+ if (!state) {
+ if (lookup->ecs_addr != NULL) {
+ isc_mem_free(mctx, lookup->ecs_addr);
+ lookup->ecs_addr = NULL;
+ }
+ break;
+ }
+ if (lookup->edns == -1) {
+ lookup->edns = DEFAULT_EDNS_VERSION;
+ }
+ if (lookup->ecs_addr != NULL) {
+ isc_mem_free(mctx, lookup->ecs_addr);
+ lookup->ecs_addr = NULL;
+ }
+ result = parse_netprefix(&lookup->ecs_addr, value);
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse client");
+ goto exit_or_usage;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 't':
+ switch (cmd[1]) {
+ case 'c': /* tcp */
+ switch (cmd[2]) {
+ case 'f':
+ FULLCHECK("tcflag");
+ lookup->tcflag = state;
+ break;
+ case 'p':
+ FULLCHECK("tcp");
+ if (!is_batchfile) {
+ lookup->tcp_mode = state;
+ lookup->tcp_mode_set = true;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'i': /* timeout */
+ FULLCHECK("timeout");
+ if (value == NULL) {
+ goto need_value;
+ }
+ if (!state) {
+ goto invalid_option;
+ }
+ result = parse_uint(&timeout, value, MAXTIMEOUT,
+ "timeout");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse timeout");
+ goto exit_or_usage;
+ }
+ if (timeout == 0) {
+ timeout = 1;
+ }
+ break;
+ case 'o':
+ FULLCHECK("topdown");
+ fprintf(stderr, ";; +topdown option is deprecated");
+ break;
+ case 'r':
+ switch (cmd[2]) {
+ case 'a': /* trace */
+ FULLCHECK("trace");
+ lookup->trace = state;
+ lookup->trace_root = state;
+ if (state) {
+ lookup->recurse = true;
+ lookup->identify = true;
+ lookup->comments = false;
+ lookup->rrcomments = 0;
+ lookup->stats = false;
+ lookup->section_additional = false;
+ lookup->section_authority = true;
+ lookup->section_question = false;
+ lookup->dnssec = true;
+ lookup->sendcookie = true;
+ usesearch = false;
+ }
+ break;
+ case 'i': /* tries */
+ FULLCHECK("tries");
+ if (value == NULL) {
+ goto need_value;
+ }
+ if (!state) {
+ goto invalid_option;
+ }
+ result = parse_uint(&lookup->retries, value,
+ MAXTRIES, "tries");
+ if (result != ISC_R_SUCCESS) {
+ warn("Couldn't parse tries");
+ goto exit_or_usage;
+ }
+ if (lookup->retries == 0) {
+ lookup->retries = 1;
+ }
+ break;
+ case 'u': /* trusted-key */
+ FULLCHECK("trusted-key");
+ fprintf(stderr, ";; +trusted-key option is "
+ "deprecated");
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 't':
+ switch (cmd[2]) {
+ case 'l':
+ switch (cmd[3]) {
+ case 0:
+ case 'i': /* ttlid */
+ FULLCHECK2("ttl", "ttlid");
+ lookup->nottl = !state;
+ break;
+ case 'u': /* ttlunits */
+ FULLCHECK("ttlunits");
+ lookup->nottl = false;
+ lookup->ttlunits = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'u':
+ switch (cmd[1]) {
+ case 'n':
+ switch (cmd[2]) {
+ case 'e':
+ FULLCHECK("unexpected");
+ lookup->accept_reply_unexpected_src = state;
+ break;
+ case 'k':
+ FULLCHECK("unknownformat");
+ lookup->print_unknown_format = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+
+ break;
+ case 'v':
+ FULLCHECK("vc");
+ if (!is_batchfile) {
+ lookup->tcp_mode = state;
+ lookup->tcp_mode_set = true;
+ }
+ break;
+ case 'y': /* yaml */
+ FULLCHECK("yaml");
+ yaml = state;
+ if (state) {
+ printcmd = false;
+ lookup->stats = false;
+ lookup->rrcomments = -1;
+ }
+ break;
+ case 'z': /* zflag */
+ FULLCHECK("zflag");
+ lookup->zflag = state;
+ break;
+ default:
+ invalid_option:
+ need_value:
+#if TARGET_OS_IPHONE
+ exit_or_usage:
+#endif /* if TARGET_OS_IPHONE */
+ fprintf(stderr, "Invalid option: +%s\n", option);
+ usage();
+ }
+ return;
+
+#if !TARGET_OS_IPHONE
+exit_or_usage:
+ digexit();
+#endif /* if !TARGET_OS_IPHONE */
+}
+
+/*%
+ * #true returned if value was used
+ */
+static const char *single_dash_opts = "46dhimnruv";
+static const char *dash_opts = "46bcdfhikmnpqrtvyx";
+static bool
+dash_option(char *option, char *next, dig_lookup_t **lookup,
+ bool *open_type_class, bool *need_clone, bool config_only, int argc,
+ char **argv, bool *firstarg) {
+ char opt, *value, *ptr, *ptr2, *ptr3, *last;
+ isc_result_t result;
+ bool value_from_next;
+ isc_textregion_t tr;
+ dns_rdatatype_t rdtype;
+ dns_rdataclass_t rdclass;
+ char textname[MXNAME];
+ struct in_addr in4;
+ struct in6_addr in6;
+ in_port_t srcport;
+ char *hash, *cmd;
+ uint32_t num;
+
+ while (strpbrk(option, single_dash_opts) == &option[0]) {
+ /*
+ * Since the -[46dhimnuv] options do not take an argument,
+ * account for them (in any number and/or combination)
+ * if they appear as the first character(s) of a q-opt.
+ */
+ opt = option[0];
+ switch (opt) {
+ case '4':
+ if (have_ipv4) {
+ isc_net_disableipv6();
+ have_ipv6 = false;
+ } else {
+ fatal("can't find IPv4 networking");
+ UNREACHABLE();
+ return (false);
+ }
+ break;
+ case '6':
+ if (have_ipv6) {
+ isc_net_disableipv4();
+ have_ipv4 = false;
+ } else {
+ fatal("can't find IPv6 networking");
+ UNREACHABLE();
+ return (false);
+ }
+ break;
+ case 'd':
+ ptr = strpbrk(&option[1], dash_opts);
+ if (ptr != &option[1]) {
+ cmd = option;
+ FULLCHECK("debug");
+ debugging = true;
+ return (false);
+ } else {
+ debugging = true;
+ }
+ break;
+ case 'h':
+ help();
+ exit(0);
+ break;
+ case 'i':
+ /* deprecated */
+ break;
+ case 'm': /* memdebug */
+ /* memdebug is handled in preparse_args() */
+ break;
+ case 'n':
+ /* deprecated */
+ break;
+ case 'r':
+ debug("digrc (late)");
+ digrc = false;
+ break;
+ case 'u':
+ (*lookup)->use_usec = true;
+ break;
+ case 'v':
+ version();
+ exit(0);
+ break;
+ }
+ if (strlen(option) > 1U) {
+ option = &option[1];
+ } else {
+ return (false);
+ }
+ }
+ opt = option[0];
+ if (strlen(option) > 1U) {
+ value_from_next = false;
+ value = &option[1];
+ } else {
+ value_from_next = true;
+ value = next;
+ }
+ if (value == NULL) {
+ goto invalid_option;
+ }
+ switch (opt) {
+ case 'b':
+ hash = strchr(value, '#');
+ if (hash != NULL) {
+ result = parse_uint(&num, hash + 1, MAXPORT,
+ "port number");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse port number");
+ }
+ srcport = num;
+ *hash = '\0';
+ } else {
+ srcport = 0;
+ }
+ if (have_ipv6 && inet_pton(AF_INET6, value, &in6) == 1) {
+ isc_sockaddr_fromin6(&bind_address, &in6, srcport);
+ isc_net_disableipv4();
+ } else if (have_ipv4 && inet_pton(AF_INET, value, &in4) == 1) {
+ isc_sockaddr_fromin(&bind_address, &in4, srcport);
+ isc_net_disableipv6();
+ } else {
+ if (hash != NULL) {
+ *hash = '#';
+ }
+ fatal("invalid address %s", value);
+ }
+ if (hash != NULL) {
+ *hash = '#';
+ }
+ specified_source = true;
+ return (value_from_next);
+ case 'c':
+ if ((*lookup)->rdclassset) {
+ fprintf(stderr, ";; Warning, extra class option\n");
+ }
+ *open_type_class = false;
+ tr.base = value;
+ tr.length = (unsigned int)strlen(value);
+ result = dns_rdataclass_fromtext(&rdclass,
+ (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS) {
+ (*lookup)->rdclass = rdclass;
+ (*lookup)->rdclassset = true;
+ } else {
+ fprintf(stderr,
+ ";; Warning, ignoring "
+ "invalid class %s\n",
+ value);
+ }
+ return (value_from_next);
+ case 'f':
+ atomic_store(&batchname, (uintptr_t)value);
+ return (value_from_next);
+ case 'k':
+ strlcpy(keyfile, value, sizeof(keyfile));
+ return (value_from_next);
+ case 'p':
+ result = parse_uint(&num, value, MAXPORT, "port number");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse port number");
+ }
+ port = num;
+ return (value_from_next);
+ case 'q':
+ if (!config_only) {
+ if (*need_clone) {
+ (*lookup) = clone_lookup(default_lookup, true);
+ }
+ *need_clone = true;
+ strlcpy((*lookup)->textname, value,
+ sizeof((*lookup)->textname));
+ (*lookup)->trace_root = ((*lookup)->trace ||
+ (*lookup)->ns_search_only);
+ (*lookup)->new_search = true;
+ if (*firstarg) {
+ printgreeting(argc, argv, *lookup);
+ *firstarg = false;
+ }
+ ISC_LIST_APPEND(lookup_list, (*lookup), link);
+ debug("looking up %s", (*lookup)->textname);
+ }
+ return (value_from_next);
+ case 't':
+ *open_type_class = false;
+ if (strncasecmp(value, "ixfr=", 5) == 0) {
+ rdtype = dns_rdatatype_ixfr;
+ result = ISC_R_SUCCESS;
+ } else {
+ tr.base = value;
+ tr.length = (unsigned int)strlen(value);
+ result = dns_rdatatype_fromtext(
+ &rdtype, (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS &&
+ rdtype == dns_rdatatype_ixfr)
+ {
+ result = DNS_R_UNKNOWN;
+ }
+ }
+ if (result == ISC_R_SUCCESS) {
+ if ((*lookup)->rdtypeset) {
+ fprintf(stderr, ";; Warning, "
+ "extra type option\n");
+ }
+ if (rdtype == dns_rdatatype_ixfr) {
+ uint32_t serial;
+ (*lookup)->rdtype = dns_rdatatype_ixfr;
+ (*lookup)->rdtypeset = true;
+ result = parse_uint(&serial, &value[5],
+ MAXSERIAL, "serial number");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse serial number");
+ }
+ (*lookup)->ixfr_serial = serial;
+ (*lookup)->section_question = plusquest;
+ (*lookup)->comments = pluscomm;
+ if (!(*lookup)->tcp_mode_set) {
+ (*lookup)->tcp_mode = true;
+ }
+ } else {
+ (*lookup)->rdtype = rdtype;
+ if (!config_only) {
+ (*lookup)->rdtypeset = true;
+ }
+ if (rdtype == dns_rdatatype_axfr) {
+ (*lookup)->section_question = plusquest;
+ (*lookup)->comments = pluscomm;
+ } else if (rdtype == dns_rdatatype_any) {
+ if (!(*lookup)->tcp_mode_set) {
+ (*lookup)->tcp_mode = true;
+ }
+ }
+ (*lookup)->ixfr_serial = false;
+ }
+ } else {
+ fprintf(stderr,
+ ";; Warning, ignoring "
+ "invalid type %s\n",
+ value);
+ }
+ return (value_from_next);
+ case 'y':
+ if ((ptr = strtok_r(value, ":", &last)) == NULL) {
+ usage();
+ }
+ if ((ptr2 = strtok_r(NULL, ":", &last)) == NULL) { /* name or
+ * secret */
+ usage();
+ }
+ if ((ptr3 = strtok_r(NULL, ":", &last)) != NULL) { /* secret or
+ * NULL */
+ parse_hmac(ptr);
+ ptr = ptr2;
+ ptr2 = ptr3;
+ } else {
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ digestbits = 0;
+ }
+ /* XXXONDREJ: FIXME */
+ strlcpy(keynametext, ptr, sizeof(keynametext));
+ strlcpy(keysecret, ptr2, sizeof(keysecret));
+ return (value_from_next);
+ case 'x':
+ if (*need_clone) {
+ *lookup = clone_lookup(default_lookup, true);
+ }
+ *need_clone = true;
+ if (get_reverse(textname, sizeof(textname), value, false) ==
+ ISC_R_SUCCESS)
+ {
+ strlcpy((*lookup)->textname, textname,
+ sizeof((*lookup)->textname));
+ debug("looking up %s", (*lookup)->textname);
+ (*lookup)->trace_root = ((*lookup)->trace ||
+ (*lookup)->ns_search_only);
+ if (!(*lookup)->rdtypeset) {
+ (*lookup)->rdtype = dns_rdatatype_ptr;
+ }
+ if (!(*lookup)->rdclassset) {
+ (*lookup)->rdclass = dns_rdataclass_in;
+ }
+ (*lookup)->new_search = true;
+ if (*firstarg) {
+ printgreeting(argc, argv, *lookup);
+ *firstarg = false;
+ }
+ ISC_LIST_APPEND(lookup_list, *lookup, link);
+ } else {
+ fprintf(stderr, "Invalid IP address %s\n", value);
+ exit(1);
+ }
+ return (value_from_next);
+ invalid_option:
+ default:
+ fprintf(stderr, "Invalid option: -%s\n", option);
+ usage();
+ }
+ UNREACHABLE();
+ return (false);
+}
+
+/*%
+ * Because we may be trying to do memory allocation recording, we're going
+ * to need to parse the arguments for the -m *before* we start the main
+ * argument parsing routine.
+ *
+ * I'd prefer not to have to do this, but I am not quite sure how else to
+ * fix the problem. Argument parsing in dig involves memory allocation
+ * by its nature, so it can't be done in the main argument parser.
+ */
+static void
+preparse_args(int argc, char **argv) {
+ int rc;
+ char **rv;
+ char *option;
+
+ rc = argc;
+ rv = argv;
+ for (rc--, rv++; rc > 0; rc--, rv++) {
+ if (rv[0][0] != '-') {
+ continue;
+ }
+ option = &rv[0][1];
+ while (strpbrk(option, single_dash_opts) == &option[0]) {
+ switch (option[0]) {
+ case 'd':
+ /* For debugging early startup */
+ debugging = true;
+ break;
+ case 'm':
+ memdebugging = true;
+ isc_mem_debugging = ISC_MEM_DEBUGTRACE |
+ ISC_MEM_DEBUGRECORD;
+ break;
+ case 'r':
+ /*
+ * Must be done early, because ~/.digrc
+ * is read before command line parsing
+ */
+ debug("digrc (early)");
+ digrc = false;
+ break;
+ case '4':
+ if (ipv6only) {
+ fatal("only one of -4 and -6 allowed");
+ }
+ ipv4only = true;
+ break;
+ case '6':
+ if (ipv4only) {
+ fatal("only one of -4 and -6 allowed");
+ }
+ ipv6only = true;
+ break;
+ }
+ option = &option[1];
+ }
+ if (strlen(option) == 0U) {
+ continue;
+ }
+ /* Look for dash value option. */
+ if (strpbrk(option, dash_opts) != &option[0]) {
+ goto invalid_option;
+ }
+ if (strlen(option) > 1U) {
+ /* value in option. */
+ continue;
+ }
+ /* Dash value is next argument so we need to skip it. */
+ rc--, rv++;
+ /* Handle missing argument */
+ if (rc == 0) {
+ invalid_option:
+ fprintf(stderr, "Invalid option: -%s\n", option);
+ usage();
+ }
+ }
+}
+
+static int
+split_batchline(char *batchline, char **bargv, int len, const char *msg) {
+ int bargc;
+ char *last = NULL;
+
+ REQUIRE(batchline != NULL);
+
+ for (bargc = 1, bargv[bargc] = strtok_r(batchline, " \t\r\n", &last);
+ bargc < len && bargv[bargc];
+ bargv[++bargc] = strtok_r(NULL, " \t\r\n", &last))
+ {
+ debug("%s %d: %s", msg, bargc, bargv[bargc]);
+ }
+ return (bargc);
+}
+
+static void
+parse_args(bool is_batchfile, bool config_only, int argc, char **argv) {
+ isc_result_t result;
+ isc_textregion_t tr;
+ bool firstarg = true;
+ dig_lookup_t *lookup = NULL;
+ dns_rdatatype_t rdtype;
+ dns_rdataclass_t rdclass;
+ bool open_type_class = true;
+ char batchline[MXNAME];
+ int bargc;
+ char *bargv[64];
+ int rc;
+ char **rv;
+#ifndef NOPOSIX
+ char *homedir;
+ char rcfile[PATH_MAX];
+#endif /* ifndef NOPOSIX */
+ bool need_clone = true;
+
+ /*
+ * The semantics for parsing the args is a bit complex; if
+ * we don't have a host yet, make the arg apply globally,
+ * otherwise make it apply to the latest host. This is
+ * a bit different than the previous versions, but should
+ * form a consistent user interface.
+ *
+ * First, create a "default lookup" which won't actually be used
+ * anywhere, except for cloning into new lookups
+ */
+
+ debug("parse_args()");
+ if (!is_batchfile) {
+ debug("making new lookup");
+ default_lookup = make_empty_lookup();
+ default_lookup->adflag = true;
+ default_lookup->edns = DEFAULT_EDNS_VERSION;
+ default_lookup->sendcookie = true;
+
+#ifndef NOPOSIX
+ /*
+ * Treat ${HOME}/.digrc as a special batchfile
+ */
+ INSIST(batchfp == NULL);
+ homedir = getenv("HOME");
+ if (homedir != NULL && digrc) {
+ unsigned int n;
+ debug("digrc (open)");
+ n = snprintf(rcfile, sizeof(rcfile), "%s/.digrc",
+ homedir);
+ if (n < sizeof(rcfile)) {
+ batchfp = fopen(rcfile, "r");
+ }
+ }
+ if (batchfp != NULL) {
+ while (fgets(batchline, sizeof(batchline), batchfp) !=
+ 0)
+ {
+ debug("config line %s", batchline);
+ bargc = split_batchline(batchline, bargv, 62,
+ ".digrc argv");
+ bargv[0] = argv[0];
+ argv0 = argv[0];
+ parse_args(true, true, bargc, (char **)bargv);
+ }
+ fclose(batchfp);
+ }
+#endif /* ifndef NOPOSIX */
+ }
+
+ if (is_batchfile && !config_only) {
+ /* Processing '-f batchfile'. */
+ lookup = clone_lookup(default_lookup, true);
+ need_clone = false;
+ } else {
+ lookup = default_lookup;
+ }
+
+ rc = argc;
+ rv = argv;
+ for (rc--, rv++; rc > 0; rc--, rv++) {
+ debug("main parsing %s", rv[0]);
+ if (strncmp(rv[0], "%", 1) == 0) {
+ break;
+ }
+ if (rv[0][0] == '@') {
+ if (is_batchfile && !config_only) {
+ addresscount = getaddresses(lookup, &rv[0][1],
+ &result);
+ if (addresscount == 0) {
+ fprintf(stderr,
+ "couldn't get address "
+ "for '%s': %s: skipping "
+ "lookup\n",
+ &rv[0][1],
+ isc_result_totext(result));
+ if (ISC_LINK_LINKED(lookup, link)) {
+ ISC_LIST_DEQUEUE(lookup_list,
+ lookup, link);
+ }
+ destroy_lookup(lookup);
+ return;
+ }
+ } else {
+ addresscount = getaddresses(lookup, &rv[0][1],
+ NULL);
+ if (addresscount == 0) {
+ fatal("no valid addresses for '%s'\n",
+ &rv[0][1]);
+ }
+ }
+ } else if (rv[0][0] == '+') {
+ plus_option(&rv[0][1], is_batchfile, lookup);
+ } else if (rv[0][0] == '-') {
+ if (rc <= 1) {
+ if (dash_option(&rv[0][1], NULL, &lookup,
+ &open_type_class, &need_clone,
+ config_only, argc, argv,
+ &firstarg))
+ {
+ rc--;
+ rv++;
+ }
+ } else {
+ if (dash_option(&rv[0][1], rv[1], &lookup,
+ &open_type_class, &need_clone,
+ config_only, argc, argv,
+ &firstarg))
+ {
+ rc--;
+ rv++;
+ }
+ }
+ } else {
+ /*
+ * Anything which isn't an option
+ */
+ if (open_type_class) {
+ if (strncasecmp(rv[0], "ixfr=", 5) == 0) {
+ rdtype = dns_rdatatype_ixfr;
+ result = ISC_R_SUCCESS;
+ } else {
+ tr.base = rv[0];
+ tr.length = (unsigned int)strlen(rv[0]);
+ result = dns_rdatatype_fromtext(
+ &rdtype,
+ (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS &&
+ rdtype == dns_rdatatype_ixfr)
+ {
+ fprintf(stderr, ";; Warning, "
+ "ixfr requires "
+ "a "
+ "serial "
+ "number\n");
+ continue;
+ }
+ }
+ if (result == ISC_R_SUCCESS) {
+ if (lookup->rdtypeset) {
+ fprintf(stderr, ";; Warning, "
+ "extra type "
+ "option\n");
+ }
+ if (rdtype == dns_rdatatype_ixfr) {
+ uint32_t serial;
+ lookup->rdtype =
+ dns_rdatatype_ixfr;
+ lookup->rdtypeset = true;
+ result = parse_uint(&serial,
+ &rv[0][5],
+ MAXSERIAL,
+ "serial "
+ "number");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse "
+ "serial number");
+ }
+ lookup->ixfr_serial = serial;
+ lookup->section_question =
+ plusquest;
+ lookup->comments = pluscomm;
+ if (!lookup->tcp_mode_set) {
+ lookup->tcp_mode = true;
+ }
+ } else {
+ lookup->rdtype = rdtype;
+ lookup->rdtypeset = true;
+ if (rdtype ==
+ dns_rdatatype_axfr)
+ {
+ lookup->section_question =
+ plusquest;
+ lookup->comments =
+ pluscomm;
+ }
+ if (rdtype ==
+ dns_rdatatype_any &&
+ !lookup->tcp_mode_set)
+ {
+ lookup->tcp_mode = true;
+ }
+ lookup->ixfr_serial = false;
+ }
+ continue;
+ }
+ result = dns_rdataclass_fromtext(
+ &rdclass, (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS) {
+ if (lookup->rdclassset) {
+ fprintf(stderr, ";; Warning, "
+ "extra class "
+ "option\n");
+ }
+ lookup->rdclass = rdclass;
+ lookup->rdclassset = true;
+ continue;
+ }
+ }
+
+ if (!config_only) {
+ if (need_clone) {
+ lookup = clone_lookup(default_lookup,
+ true);
+ }
+ need_clone = true;
+ strlcpy(lookup->textname, rv[0],
+ sizeof(lookup->textname));
+ lookup->trace_root = (lookup->trace ||
+ lookup->ns_search_only);
+ lookup->new_search = true;
+ if (firstarg) {
+ printgreeting(argc, argv, lookup);
+ firstarg = false;
+ }
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+ debug("looking up %s", lookup->textname);
+ }
+ /* XXX Error message */
+ }
+ }
+
+ /*
+ * If we have a batchfile, seed the lookup list with the
+ * first entry, then trust the callback in dighost_shutdown
+ * to get the rest
+ */
+ char *filename = (char *)atomic_load(&batchname);
+ if ((filename != NULL) && !(is_batchfile)) {
+ if (strcmp(filename, "-") == 0) {
+ batchfp = stdin;
+ } else {
+ batchfp = fopen(filename, "r");
+ }
+ if (batchfp == NULL) {
+ perror(filename);
+ if (exitcode < 8) {
+ exitcode = 8;
+ }
+ fatal("couldn't open specified batch file");
+ }
+ /* XXX Remove code dup from shutdown code */
+ next_line:
+ if (fgets(batchline, sizeof(batchline), batchfp) != 0) {
+ debug("batch line %s", batchline);
+ if (batchline[0] == '\r' || batchline[0] == '\n' ||
+ batchline[0] == '#' || batchline[0] == ';')
+ {
+ goto next_line;
+ }
+ bargc = split_batchline(batchline, bargv, 14,
+ "batch argv");
+ bargv[0] = argv[0];
+ argv0 = argv[0];
+ parse_args(true, false, bargc, (char **)bargv);
+ return;
+ }
+ return;
+ }
+ /*
+ * If no lookup specified, search for root
+ */
+ if ((lookup_list.head == NULL) && !config_only) {
+ if (need_clone) {
+ lookup = clone_lookup(default_lookup, true);
+ }
+ need_clone = true;
+ lookup->trace_root = (lookup->trace || lookup->ns_search_only);
+ lookup->new_search = true;
+ strlcpy(lookup->textname, ".", sizeof(lookup->textname));
+ lookup->rdtype = dns_rdatatype_ns;
+ lookup->rdtypeset = true;
+ if (firstarg) {
+ printgreeting(argc, argv, lookup);
+ firstarg = false;
+ }
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+ }
+ if (!need_clone) {
+ destroy_lookup(lookup);
+ }
+}
+
+/*
+ * Callback from dighost.c to allow program-specific shutdown code.
+ * Here, we're possibly reading from a batch file, then shutting down
+ * for real if there's nothing in the batch file to read.
+ */
+static void
+query_finished(void) {
+ char batchline[MXNAME];
+ int bargc;
+ char *bargv[16];
+
+ if (atomic_load(&batchname) == 0) {
+ isc_app_shutdown();
+ return;
+ }
+
+ fflush(stdout);
+ if (feof(batchfp)) {
+ atomic_store(&batchname, 0);
+ isc_app_shutdown();
+ if (batchfp != stdin) {
+ fclose(batchfp);
+ }
+ return;
+ }
+
+ if (fgets(batchline, sizeof(batchline), batchfp) != 0) {
+ debug("batch line %s", batchline);
+ bargc = split_batchline(batchline, bargv, 14, "batch argv");
+ bargv[0] = argv0;
+ parse_args(true, false, bargc, (char **)bargv);
+ start_lookup();
+ } else {
+ atomic_store(&batchname, 0);
+ if (batchfp != stdin) {
+ fclose(batchfp);
+ }
+ isc_app_shutdown();
+ return;
+ }
+}
+
+static void
+dig_error(const char *format, ...) {
+ va_list args;
+
+ if (yaml) {
+ printf("-\n");
+ printf(" type: DIG_ERROR\n");
+
+ /*
+ * Print an indent before a literal block quote.
+ * Note: this will break if used to print more than
+ * one line of text as only the first line would be
+ * indented.
+ */
+ printf(" message: |\n");
+ printf(" ");
+ } else {
+ printf(";; ");
+ }
+
+ va_start(args, format);
+ vprintf(format, args);
+ va_end(args);
+
+ if (!yaml) {
+ printf("\n");
+ }
+}
+
+static void
+dig_warning(const char *format, ...) {
+ va_list args;
+
+ if (!yaml) {
+ printf(";; ");
+
+ va_start(args, format);
+ vprintf(format, args);
+ va_end(args);
+
+ printf("\n");
+ }
+}
+
+static void
+dig_comments(dig_lookup_t *lookup, const char *format, ...) {
+ va_list args;
+
+ if (lookup->comments && !yaml) {
+ printf(";; ");
+
+ va_start(args, format);
+ vprintf(format, args);
+ va_end(args);
+
+ printf("\n");
+ }
+}
+
+void
+dig_setup(int argc, char **argv) {
+ isc_result_t result;
+
+ ISC_LIST_INIT(lookup_list);
+ ISC_LIST_INIT(server_list);
+ ISC_LIST_INIT(search_list);
+
+ debug("dig_setup()");
+
+ /* setup dighost callbacks */
+ dighost_printmessage = printmessage;
+ dighost_received = received;
+ dighost_trying = trying;
+ dighost_shutdown = query_finished;
+ dighost_error = dig_error;
+ dighost_warning = dig_warning;
+ dighost_comments = dig_comments;
+
+ progname = argv[0];
+ preparse_args(argc, argv);
+
+ result = isc_app_start();
+ check_result(result, "isc_app_start");
+
+ setup_libs();
+ setup_system(ipv4only, ipv6only);
+}
+
+void
+dig_query_setup(bool is_batchfile, bool config_only, int argc, char **argv) {
+ debug("dig_query_setup");
+
+ parse_args(is_batchfile, config_only, argc, argv);
+ if (keyfile[0] != 0) {
+ setup_file_key();
+ } else if (keysecret[0] != 0) {
+ setup_text_key();
+ }
+ if (domainopt[0] != '\0') {
+ set_search_domain(domainopt);
+ usesearch = true;
+ }
+}
+
+void
+dig_startup() {
+ isc_result_t result;
+
+ debug("dig_startup()");
+
+ result = isc_app_onrun(mctx, global_task, onrun_callback, NULL);
+ check_result(result, "isc_app_onrun");
+ isc_app_run();
+}
+
+void
+dig_query_start() {
+ start_lookup();
+}
+
+void
+dig_shutdown() {
+ destroy_lookup(default_lookup);
+ if (atomic_load(&batchname) != 0) {
+ if (batchfp != stdin) {
+ fclose(batchfp);
+ }
+ atomic_store(&batchname, 0);
+ }
+ cancel_all();
+ destroy_libs();
+ isc_app_finish();
+}
+
+/*% Main processing routine for dig */
+int
+main(int argc, char **argv) {
+ dig_setup(argc, argv);
+ dig_query_setup(false, false, argc, argv);
+ dig_startup();
+ dig_shutdown();
+
+ return (exitcode);
+}
diff --git a/bin/dig/dig.rst b/bin/dig/dig.rst
new file mode 100644
index 0000000..d27b1fd
--- /dev/null
+++ b/bin/dig/dig.rst
@@ -0,0 +1,645 @@
+.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+..
+.. SPDX-License-Identifier: MPL-2.0
+..
+.. This Source Code Form is subject to the terms of the Mozilla Public
+.. License, v. 2.0. If a copy of the MPL was not distributed with this
+.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
+..
+.. See the COPYRIGHT file distributed with this work for additional
+.. information regarding copyright ownership.
+
+.. highlight: console
+
+.. _man_dig:
+
+dig - DNS lookup utility
+------------------------
+
+Synopsis
+~~~~~~~~
+:program:`dig` [@server] [**-b** address] [**-c** class] [**-f** filename] [**-k** filename] [**-m**] [**-p** port#] [**-q** name] [**-t** type] [**-v**] [**-x** addr] [**-y** [hmac:]name:key] [ [**-4**] | [**-6**] ] [name] [type] [class] [queryopt...]
+
+:program:`dig` [**-h**]
+
+:program:`dig` [global-queryopt...] [query...]
+
+Description
+~~~~~~~~~~~
+
+``dig`` is a flexible tool for interrogating DNS name servers. It
+performs DNS lookups and displays the answers that are returned from the
+name server(s) that were queried. Most DNS administrators use ``dig`` to
+troubleshoot DNS problems because of its flexibility, ease of use, and
+clarity of output. Other lookup tools tend to have less functionality
+than ``dig``.
+
+Although ``dig`` is normally used with command-line arguments, it also
+has a batch mode of operation for reading lookup requests from a file. A
+brief summary of its command-line arguments and options is printed when
+the ``-h`` option is given. The BIND 9
+implementation of ``dig`` allows multiple lookups to be issued from the
+command line.
+
+Unless it is told to query a specific name server, ``dig`` tries each
+of the servers listed in ``/etc/resolv.conf``. If no usable server
+addresses are found, ``dig`` sends the query to the local host.
+
+When no command-line arguments or options are given, ``dig``
+performs an NS query for "." (the root).
+
+It is possible to set per-user defaults for ``dig`` via
+``${HOME}/.digrc``. This file is read and any options in it are applied
+before the command-line arguments. The ``-r`` option disables this
+feature, for scripts that need predictable behavior.
+
+The IN and CH class names overlap with the IN and CH top-level domain
+names. Either use the ``-t`` and ``-c`` options to specify the type and
+class, use the ``-q`` to specify the domain name, or use "IN." and
+"CH." when looking up these top-level domains.
+
+Simple Usage
+~~~~~~~~~~~~
+
+A typical invocation of ``dig`` looks like:
+
+::
+
+ dig @server name type
+
+where:
+
+``server``
+ is the name or IP address of the name server to query. This can be an
+ IPv4 address in dotted-decimal notation or an IPv6 address in
+ colon-delimited notation. When the supplied ``server`` argument is a
+ hostname, ``dig`` resolves that name before querying that name
+ server.
+
+ If no ``server`` argument is provided, ``dig`` consults
+ ``/etc/resolv.conf``; if an address is found there, it queries the
+ name server at that address. If either of the ``-4`` or ``-6``
+ options are in use, then only addresses for the corresponding
+ transport are tried. If no usable addresses are found, ``dig``
+ sends the query to the local host. The reply from the name server
+ that responds is displayed.
+
+``name``
+ is the name of the resource record that is to be looked up.
+
+``type``
+ indicates what type of query is required - ANY, A, MX, SIG, etc.
+ ``type`` can be any valid query type. If no ``type`` argument is
+ supplied, ``dig`` performs a lookup for an A record.
+
+Options
+~~~~~~~
+
+``-4``
+ This option indicates that only IPv4 should be used.
+
+``-6``
+ This option indicates that only IPv6 should be used.
+
+``-b address[#port]``
+ This option sets the source IP address of the query. The ``address`` must be a
+ valid address on one of the host's network interfaces, or "0.0.0.0"
+ or "::". An optional port may be specified by appending ``#port``.
+
+``-c class``
+ This option sets the query class. The default ``class`` is IN; other classes are
+ HS for Hesiod records or CH for Chaosnet records.
+
+``-f file``
+ This option sets batch mode, in which ``dig`` reads a list of lookup requests to process from
+ the given ``file``. Each line in the file should be organized in the
+ same way it would be presented as a query to ``dig`` using the
+ command-line interface.
+
+``-k keyfile``
+ This option tells ``named`` to sign queries using TSIG using a key read from the given file. Key
+ files can be generated using ``tsig-keygen``. When using TSIG
+ authentication with ``dig``, the name server that is queried needs to
+ know the key and algorithm that is being used. In BIND, this is done
+ by providing appropriate ``key`` and ``server`` statements in
+ ``named.conf``.
+
+``-m``
+ This option enables memory usage debugging.
+
+``-p port``
+ This option sends the query to a non-standard port on the server, instead of the
+ default port 53. This option is used to test a name server that
+ has been configured to listen for queries on a non-standard port
+ number.
+
+``-q name``
+ This option specifies the domain name to query. This is useful to distinguish the ``name``
+ from other arguments.
+
+``-r``
+ This option indicates that options from ``${HOME}/.digrc`` should not be read. This is useful for
+ scripts that need predictable behavior.
+
+``-t type``
+ This option indicates the resource record type to query, which can be any valid query type. If
+ it is a resource record type supported in BIND 9, it can be given by
+ the type mnemonic (such as ``NS`` or ``AAAA``). The default query type is
+ ``A``, unless the ``-x`` option is supplied to indicate a reverse
+ lookup. A zone transfer can be requested by specifying a type of
+ AXFR. When an incremental zone transfer (IXFR) is required, set the
+ ``type`` to ``ixfr=N``. The incremental zone transfer contains
+ all changes made to the zone since the serial number in the zone's
+ SOA record was ``N``.
+
+ All resource record types can be expressed as ``TYPEnn``, where ``nn`` is
+ the number of the type. If the resource record type is not supported
+ in BIND 9, the result is displayed as described in :rfc:`3597`.
+
+``-u``
+ This option indicates that print query times should be provided in microseconds instead of milliseconds.
+
+``-v``
+ This option prints the version number and exits.
+
+``-x addr``
+ This option sets simplified reverse lookups, for mapping addresses to names. The
+ ``addr`` is an IPv4 address in dotted-decimal notation, or a
+ colon-delimited IPv6 address. When the ``-x`` option is used, there is no
+ need to provide the ``name``, ``class``, and ``type`` arguments.
+ ``dig`` automatically performs a lookup for a name like
+ ``94.2.0.192.in-addr.arpa`` and sets the query type and class to PTR
+ and IN respectively. IPv6 addresses are looked up using nibble format
+ under the IP6.ARPA domain.
+
+``-y [hmac:]keyname:secret``
+ This option signs queries using TSIG with the given authentication key.
+ ``keyname`` is the name of the key, and ``secret`` is the
+ base64-encoded shared secret. ``hmac`` is the name of the key algorithm;
+ valid choices are ``hmac-md5``, ``hmac-sha1``, ``hmac-sha224``,
+ ``hmac-sha256``, ``hmac-sha384``, or ``hmac-sha512``. If ``hmac`` is
+ not specified, the default is ``hmac-md5``; if MD5 was disabled, the default is
+ ``hmac-sha256``.
+
+.. note:: Only the ``-k`` option should be used, rather than the ``-y`` option,
+ because with ``-y`` the shared secret is supplied as a command-line
+ argument in clear text. This may be visible in the output from ``ps1`` or
+ in a history file maintained by the user's shell.
+
+Query Options
+~~~~~~~~~~~~~
+
+``dig`` provides a number of query options which affect the way in which
+lookups are made and the results displayed. Some of these set or reset
+flag bits in the query header, some determine which sections of the
+answer get printed, and others determine the timeout and retry
+strategies.
+
+Each query option is identified by a keyword preceded by a plus sign
+(``+``). Some keywords set or reset an option; these may be preceded by
+the string ``no`` to negate the meaning of that keyword. Other keywords
+assign values to options, like the timeout interval. They have the form
+``+keyword=value``. Keywords may be abbreviated, provided the
+abbreviation is unambiguous; for example, ``+cd`` is equivalent to
+``+cdflag``. The query options are:
+
+``+[no]aaflag``
+ This option is a synonym for ``+[no]aaonly``.
+
+``+[no]aaonly``
+ This option sets the ``aa`` flag in the query.
+
+``+[no]additional``
+ This option displays [or does not display] the additional section of a reply. The
+ default is to display it.
+
+``+[no]adflag``
+ This option sets [or does not set] the AD (authentic data) bit in the query. This
+ requests the server to return whether all of the answer and authority
+ sections have been validated as secure, according to the security
+ policy of the server. ``AD=1`` indicates that all records have been
+ validated as secure and the answer is not from a OPT-OUT range. ``AD=0``
+ indicates that some part of the answer was insecure or not validated.
+ This bit is set by default.
+
+``+[no]all``
+ This option sets or clears all display flags.
+
+``+[no]answer``
+ This option displays [or does not display] the answer section of a reply. The default
+ is to display it.
+
+``+[no]authority``
+ This option displays [or does not display] the authority section of a reply. The
+ default is to display it.
+
+``+[no]badcookie``
+ This option retries the lookup with a new server cookie if a BADCOOKIE response is
+ received.
+
+``+[no]besteffort``
+ This option attempts to display the contents of messages which are malformed. The
+ default is to not display malformed answers.
+
+``+bufsize[=B]``
+ This option sets the UDP message buffer size advertised using EDNS0
+ to ``B`` bytes. The maximum and minimum sizes of this buffer are
+ 65535 and 0, respectively. ``+bufsize=0`` disables EDNS (use
+ ``+bufsize=0 +edns`` to send an EDNS message with an advertised size
+ of 0 bytes). ``+bufsize`` restores the default buffer size.
+
+``+[no]cdflag``
+ This option sets [or does not set] the CD (checking disabled) bit in the query. This
+ requests the server to not perform DNSSEC validation of responses.
+
+``+[no]class``
+ This option displays [or does not display] the CLASS when printing the record.
+
+``+[no]cmd``
+ This option toggles the printing of the initial comment in the output, identifying the
+ version of ``dig`` and the query options that have been applied. This option
+ always has a global effect; it cannot be set globally and then overridden on a
+ per-lookup basis. The default is to print this comment.
+
+``+[no]comments``
+ This option toggles the display of some comment lines in the output, with
+ information about the packet header and OPT pseudosection, and the names of
+ the response section. The default is to print these comments.
+
+ Other types of comments in the output are not affected by this option, but
+ can be controlled using other command-line switches. These include
+ ``+[no]cmd``, ``+[no]question``, ``+[no]stats``, and ``+[no]rrcomments``.
+
+``+[no]cookie=####``
+ This option sends [or does not send] a COOKIE EDNS option, with an optional value. Replaying a COOKIE
+ from a previous response allows the server to identify a previous
+ client. The default is ``+cookie``.
+
+ ``+cookie`` is also set when ``+trace`` is set to better emulate the
+ default queries from a nameserver.
+
+``+[no]crypto``
+ This option toggles the display of cryptographic fields in DNSSEC records. The
+ contents of these fields are unnecessary for debugging most DNSSEC
+ validation failures and removing them makes it easier to see the
+ common failures. The default is to display the fields. When omitted,
+ they are replaced by the string ``[omitted]`` or, in the DNSKEY case, the
+ key ID is displayed as the replacement, e.g. ``[ key id = value ]``.
+
+``+[no]defname``
+ This option, which is deprecated, is treated as a synonym for ``+[no]search``.
+
+``+[no]dnssec``
+ This option requests that DNSSEC records be sent by setting the DNSSEC OK (DO) bit in
+ the OPT record in the additional section of the query.
+
+``+domain=somename``
+ This option sets the search list to contain the single domain ``somename``, as if
+ specified in a ``domain`` directive in ``/etc/resolv.conf``, and
+ enables search list processing as if the ``+search`` option were
+ given.
+
+``+dscp=value``
+ This option sets the DSCP code point to be used when sending the query. Valid DSCP
+ code points are in the range [0...63]. By default no code point is
+ explicitly set.
+
+``+[no]edns[=#]``
+ This option specifies the EDNS version to query with. Valid values are 0 to 255.
+ Setting the EDNS version causes an EDNS query to be sent.
+ ``+noedns`` clears the remembered EDNS version. EDNS is set to 0 by
+ default.
+
+``+[no]ednsflags[=#]``
+ This option sets the must-be-zero EDNS flags bits (Z bits) to the specified value.
+ Decimal, hex, and octal encodings are accepted. Setting a named flag
+ (e.g., DO) is silently ignored. By default, no Z bits are set.
+
+``+[no]ednsnegotiation``
+ This option enables/disables EDNS version negotiation. By default, EDNS version
+ negotiation is enabled.
+
+``+[no]ednsopt[=code[:value]]``
+ This option specifies the EDNS option with code point ``code`` and an optional payload
+ of ``value`` as a hexadecimal string. ``code`` can be either an EDNS
+ option name (for example, ``NSID`` or ``ECS``) or an arbitrary
+ numeric value. ``+noednsopt`` clears the EDNS options to be sent.
+
+``+[no]expire``
+ This option sends an EDNS Expire option.
+
+``+[no]fail``
+ This option indicates that ``named`` should try [or not try] the next server if a SERVFAIL is received. The default is
+ to not try the next server, which is the reverse of normal stub
+ resolver behavior.
+
+``+[no]header-only``
+ This option sends a query with a DNS header without a question section. The
+ default is to add a question section. The query type and query name
+ are ignored when this is set.
+
+``+[no]identify``
+ This option shows [or does not show] the IP address and port number that supplied
+ the answer, when the ``+short`` option is enabled. If short form
+ answers are requested, the default is not to show the source address
+ and port number of the server that provided the answer.
+
+``+[no]idnin``
+ This option processes [or does not process] IDN domain names on input. This requires
+ ``IDN SUPPORT`` to have been enabled at compile time.
+
+ The default is to process IDN input when standard output is a tty.
+ The IDN processing on input is disabled when ``dig`` output is redirected
+ to files, pipes, and other non-tty file descriptors.
+
+``+[no]idnout``
+ This option converts [or does not convert] puny code on output. This requires
+ ``IDN SUPPORT`` to have been enabled at compile time.
+
+ The default is to process puny code on output when standard output is
+ a tty. The puny code processing on output is disabled when ``dig`` output
+ is redirected to files, pipes, and other non-tty file descriptors.
+
+``+[no]ignore``
+ This option ignores [or does not ignore] truncation in UDP responses instead of retrying with TCP. By
+ default, TCP retries are performed.
+
+``+[no]keepalive``
+ This option sends [or does not send] an EDNS Keepalive option.
+
+``+[no]keepopen``
+ This option keeps [or does not keep] the TCP socket open between queries, and reuses it rather than
+ creating a new TCP socket for each lookup. The default is
+ ``+nokeepopen``.
+
+``+[no]mapped``
+ This option allows [or does not allow] mapped IPv4-over-IPv6 addresses to be used. The default is
+ ``+mapped``.
+
+``+[no]multiline``
+ This option prints [or does not print] records, like the SOA records, in a verbose multi-line format
+ with human-readable comments. The default is to print each record on
+ a single line to facilitate machine parsing of the ``dig`` output.
+
+``+ndots=D``
+ This option sets the number of dots (``D``) that must appear in ``name`` for
+ it to be considered absolute. The default value is that defined using
+ the ``ndots`` statement in ``/etc/resolv.conf``, or 1 if no ``ndots``
+ statement is present. Names with fewer dots are interpreted as
+ relative names, and are searched for in the domains listed in the
+ ``search`` or ``domain`` directive in ``/etc/resolv.conf`` if
+ ``+search`` is set.
+
+``+[no]nsid``
+ When enabled, this option includes an EDNS name server ID request when sending a query.
+
+``+[no]nssearch``
+ When this option is set, ``dig`` attempts to find the authoritative
+ name servers for the zone containing the name being looked up, and
+ display the SOA record that each name server has for the zone.
+ Addresses of servers that did not respond are also printed.
+
+``+[no]onesoa``
+ When enabled, this option prints only one (starting) SOA record when performing an AXFR. The
+ default is to print both the starting and ending SOA records.
+
+``+[no]opcode=value``
+ When enabled, this option sets (restores) the DNS message opcode to the specified value. The
+ default value is QUERY (0).
+
+``+padding=value``
+ This option pads the size of the query packet using the EDNS Padding option to
+ blocks of ``value`` bytes. For example, ``+padding=32`` causes a
+ 48-byte query to be padded to 64 bytes. The default block size is 0,
+ which disables padding; the maximum is 512. Values are ordinarily
+ expected to be powers of two, such as 128; however, this is not
+ mandatory. Responses to padded queries may also be padded, but only
+ if the query uses TCP or DNS COOKIE.
+
+``+[no]qr``
+ This option toggles the display of the query message as it is sent. By default, the query
+ is not printed.
+
+``+[no]question``
+ This option toggles the display of the question section of a query when an answer is
+ returned. The default is to print the question section as a comment.
+
+``+[no]raflag``
+ This option sets [or does not set] the RA (Recursion Available) bit in the query. The
+ default is ``+noraflag``. This bit is ignored by the server for
+ QUERY.
+
+``+[no]rdflag``
+ This option is a synonym for ``+[no]recurse``.
+
+``+[no]recurse``
+ This option toggles the setting of the RD (recursion desired) bit in the query.
+ This bit is set by default, which means ``dig`` normally sends
+ recursive queries. Recursion is automatically disabled when the
+ ``+nssearch`` or ``+trace`` query option is used.
+
+``+retry=T``
+ This option sets the number of times to retry UDP and TCP queries to server to ``T``
+ instead of the default, 2. Unlike ``+tries``, this does not include
+ the initial query.
+
+``+[no]rrcomments``
+ This option toggles the display of per-record comments in the output (for example,
+ human-readable key information about DNSKEY records). The default is
+ not to print record comments unless multiline mode is active.
+
+``+[no]search``
+ This option uses [or does not use] the search list defined by the searchlist or domain
+ directive in ``resolv.conf``, if any. The search list is not used by
+ default.
+
+ ``ndots`` from ``resolv.conf`` (default 1), which may be overridden by
+ ``+ndots``, determines whether the name is treated as relative
+ and hence whether a search is eventually performed.
+
+``+[no]short``
+ This option toggles whether a terse answer is provided. The default is to print the answer in a verbose
+ form. This option always has a global effect; it cannot be set globally and
+ then overridden on a per-lookup basis.
+
+``+[no]showsearch``
+ This option performs [or does not perform] a search showing intermediate results.
+
+``+[no]sigchase``
+ This feature is now obsolete and has been removed; use ``delv``
+ instead.
+
+``+split=W``
+ This option splits long hex- or base64-formatted fields in resource records into
+ chunks of ``W`` characters (where ``W`` is rounded up to the nearest
+ multiple of 4). ``+nosplit`` or ``+split=0`` causes fields not to be
+ split at all. The default is 56 characters, or 44 characters when
+ multiline mode is active.
+
+``+[no]stats``
+ This option toggles the printing of statistics: when the query was made, the size of the
+ reply, etc. The default behavior is to print the query statistics as a
+ comment after each lookup.
+
+``+[no]subnet=addr[/prefix-length]``
+ This option sends [or does not send] an EDNS CLIENT-SUBNET option with the specified IP
+ address or network prefix.
+
+ ``dig +subnet=0.0.0.0/0``, or simply ``dig +subnet=0`` for short,
+ sends an EDNS CLIENT-SUBNET option with an empty address and a source
+ prefix-length of zero, which signals a resolver that the client's
+ address information must *not* be used when resolving this query.
+
+``+[no]tcflag``
+ This option sets [or does not set] the TC (TrunCation) bit in the query. The default is
+ ``+notcflag``. This bit is ignored by the server for QUERY.
+
+``+[no]tcp``
+ This option uses [or does not use] TCP when querying name servers.
+ The default behavior is to use UDP unless a type ``any`` or
+ ``ixfr=N`` query is requested, in which case the default is TCP.
+ AXFR queries always use TCP. To prevent retry over TCP when TC=1
+ is returned from a UDP query, use ``+ignore``.
+
+``+timeout=T``
+ This option sets the timeout for a query to ``T`` seconds. The default timeout is
+ 5 seconds. An attempt to set ``T`` to less than 1 is silently set to 1.
+
+``+[no]topdown``
+ This feature is related to ``dig +sigchase``, which is obsolete and
+ has been removed. Use ``delv`` instead.
+
+``+[no]trace``
+ This option toggles tracing of the delegation path from the root name servers for
+ the name being looked up. Tracing is disabled by default. When
+ tracing is enabled, ``dig`` makes iterative queries to resolve the
+ name being looked up. It follows referrals from the root servers,
+ showing the answer from each server that was used to resolve the
+ lookup.
+
+ If ``@server`` is also specified, it affects only the initial query for
+ the root zone name servers.
+
+ ``+dnssec`` is also set when ``+trace`` is set, to better emulate the
+ default queries from a name server.
+
+``+tries=T``
+ This option sets the number of times to try UDP and TCP queries to server to ``T``
+ instead of the default, 3. If ``T`` is less than or equal to zero,
+ the number of tries is silently rounded up to 1.
+
+``+trusted-key=####``
+ This option formerly specified trusted keys for use with ``dig +sigchase``. This
+ feature is now obsolete and has been removed; use ``delv`` instead.
+
+``+[no]ttlid``
+ This option displays [or does not display] the TTL when printing the record.
+
+``+[no]ttlunits``
+ This option displays [or does not display] the TTL in friendly human-readable time
+ units of ``s``, ``m``, ``h``, ``d``, and ``w``, representing seconds, minutes,
+ hours, days, and weeks. This implies ``+ttlid``.
+
+``+[no]unexpected``
+ This option accepts [or does not accept] answers from unexpected sources. By default, ``dig``
+ will not accept a reply from a source other than the one to which it sent the
+ query.
+
+``+[no]unknownformat``
+ This option prints all RDATA in unknown RR type presentation format (:rfc:`3597`).
+ The default is to print RDATA for known types in the type's
+ presentation format.
+
+``+[no]vc``
+ This option uses [or does not use] TCP when querying name servers. This alternate
+ syntax to ``+[no]tcp`` is provided for backwards compatibility. The
+ ``vc`` stands for "virtual circuit."
+
+``+[no]yaml``
+ When enabled, this option prints the responses (and, if ``+qr`` is in use, also the
+ outgoing queries) in a detailed YAML format.
+
+``+[no]zflag``
+ This option sets [or does not set] the last unassigned DNS header flag in a DNS query.
+ This flag is off by default.
+
+Multiple Queries
+~~~~~~~~~~~~~~~~
+
+The BIND 9 implementation of ``dig`` supports specifying multiple
+queries on the command line (in addition to supporting the ``-f`` batch
+file option). Each of those queries can be supplied with its own set of
+flags, options, and query options.
+
+In this case, each ``query`` argument represents an individual query in
+the command-line syntax described above. Each consists of any of the
+standard options and flags, the name to be looked up, an optional query
+type and class, and any query options that should be applied to that
+query.
+
+A global set of query options, which should be applied to all queries,
+can also be supplied. These global query options must precede the first
+tuple of name, class, type, options, flags, and query options supplied
+on the command line. Any global query options (except ``+[no]cmd`` and
+``+[no]short`` options) can be overridden by a query-specific set of
+query options. For example:
+
+::
+
+ dig +qr www.isc.org any -x 127.0.0.1 isc.org ns +noqr
+
+shows how ``dig`` can be used from the command line to make three
+lookups: an ANY query for ``www.isc.org``, a reverse lookup of 127.0.0.1,
+and a query for the NS records of ``isc.org``. A global query option of
+``+qr`` is applied, so that ``dig`` shows the initial query it made for
+each lookup. The final query has a local query option of ``+noqr`` which
+means that ``dig`` does not print the initial query when it looks up the
+NS records for ``isc.org``.
+
+IDN Support
+~~~~~~~~~~~
+
+If ``dig`` has been built with IDN (internationalized domain name)
+support, it can accept and display non-ASCII domain names. ``dig``
+appropriately converts character encoding of a domain name before sending
+a request to a DNS server or displaying a reply from the server.
+To turn off IDN support, use the parameters
+``+noidnin`` and ``+noidnout``, or define the ``IDN_DISABLE`` environment
+variable.
+
+Return Codes
+~~~~~~~~~~~~
+
+``dig`` return codes are:
+
+``0``
+ DNS response received, including NXDOMAIN status
+
+``1``
+ Usage error
+
+``8``
+ Couldn't open batch file
+
+``9``
+ No reply from server
+
+``10``
+ Internal error
+
+Files
+~~~~~
+
+``/etc/resolv.conf``
+
+``${HOME}/.digrc``
+
+See Also
+~~~~~~~~
+
+:manpage:`delv(1)`, :manpage:`host(1)`, :manpage:`named(8)`, :manpage:`dnssec-keygen(8)`, :rfc:`1035`.
+
+Bugs
+~~~~
+
+There are probably too many query options.
diff --git a/bin/dig/dighost.c b/bin/dig/dighost.c
new file mode 100644
index 0000000..ac7e1fb
--- /dev/null
+++ b/bin/dig/dighost.c
@@ -0,0 +1,4604 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file
+ * \note
+ * Notice to programmers: Do not use this code as an example of how to
+ * use the ISC library to perform DNS lookups. Dig and Host both operate
+ * on the request level, since they allow fine-tuning of output and are
+ * intended as debugging tools. As a result, they perform many of the
+ * functions which could be better handled using the dns_resolver
+ * functions in most applications.
+ */
+
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef HAVE_LOCALE_H
+#include <locale.h>
+#endif /* ifdef HAVE_LOCALE_H */
+
+#ifdef HAVE_LIBIDN2
+#include <idn2.h>
+#endif /* HAVE_LIBIDN2 */
+
+#include <isc/app.h>
+#include <isc/base64.h>
+#include <isc/file.h>
+#include <isc/hex.h>
+#include <isc/lang.h>
+#include <isc/log.h>
+#include <isc/managers.h>
+#include <isc/netaddr.h>
+#include <isc/netdb.h>
+#include <isc/nonce.h>
+#include <isc/parseint.h>
+#include <isc/print.h>
+#include <isc/random.h>
+#include <isc/result.h>
+#include <isc/safe.h>
+#include <isc/serial.h>
+#include <isc/sockaddr.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/types.h>
+#include <isc/util.h>
+
+#include <pk11/site.h>
+
+#include <dns/byaddr.h>
+#include <dns/fixedname.h>
+#include <dns/log.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/opcode.h>
+#include <dns/rcode.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdatalist.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+#include <dns/tsig.h>
+
+#include <dst/dst.h>
+#include <dst/result.h>
+
+#include <isccfg/namedconf.h>
+
+#include <irs/resconf.h>
+
+#include <bind9/getaddresses.h>
+
+#include <dig/dig.h>
+
+#if USE_PKCS11
+#include <pk11/result.h>
+#endif /* if USE_PKCS11 */
+
+#if !defined(NS_INADDRSZ)
+#define NS_INADDRSZ 4
+#endif /* if !defined(NS_INADDRSZ) */
+
+#if !defined(NS_IN6ADDRSZ)
+#define NS_IN6ADDRSZ 16
+#endif /* if !defined(NS_IN6ADDRSZ) */
+
+#if HAVE_SETLOCALE
+#define systemlocale(l) (void)setlocale(l, "")
+#define resetlocale(l) (void)setlocale(l, "C")
+#else
+#define systemlocale(l)
+#define resetlocale(l)
+#endif /* HAVE_SETLOCALE */
+
+dig_lookuplist_t lookup_list;
+dig_serverlist_t server_list;
+dig_searchlistlist_t search_list;
+
+bool check_ra = false, have_ipv4 = false, have_ipv6 = false,
+ specified_source = false, free_now = false, cancel_now = false,
+ usesearch = false, showsearch = false, is_dst_up = false,
+ keep_open = false, verbose = false, yaml = false;
+in_port_t port = 53;
+unsigned int timeout = 0;
+unsigned int extrabytes;
+isc_mem_t *mctx = NULL;
+isc_log_t *lctx = NULL;
+isc_nm_t *netmgr = NULL;
+isc_taskmgr_t *taskmgr = NULL;
+isc_task_t *global_task = NULL;
+isc_timermgr_t *timermgr = NULL;
+isc_socketmgr_t *socketmgr = NULL;
+isc_sockaddr_t bind_address;
+isc_sockaddr_t bind_any;
+int sendcount = 0;
+int recvcount = 0;
+int sockcount = 0;
+int ndots = -1;
+int tries = 3;
+int lookup_counter = 0;
+
+static char servercookie[256];
+
+#ifdef HAVE_LIBIDN2
+static void
+idn_locale_to_ace(const char *src, char *dst, size_t dstlen);
+static void
+idn_ace_to_locale(const char *src, char **dst);
+static isc_result_t
+idn_output_filter(isc_buffer_t *buffer, unsigned int used_org);
+#endif /* HAVE_LIBIDN2 */
+
+isc_socket_t *keep = NULL;
+isc_sockaddr_t keepaddr;
+
+/*%
+ * Exit Codes:
+ *
+ *\li 0 Everything went well, including things like NXDOMAIN
+ *\li 1 Usage error
+ *\li 7 Got too many RR's or Names
+ *\li 8 Couldn't open batch file
+ *\li 9 No reply from server
+ *\li 10 Internal error
+ */
+int exitcode = 0;
+int fatalexit = 0;
+char keynametext[MXNAME];
+char keyfile[MXNAME] = "";
+char keysecret[MXNAME] = "";
+unsigned char cookie_secret[33];
+unsigned char cookie[8];
+const dns_name_t *hmacname = NULL;
+unsigned int digestbits = 0;
+isc_buffer_t *namebuf = NULL;
+dns_tsigkey_t *tsigkey = NULL;
+bool validated = true;
+bool debugging = false;
+bool debugtiming = false;
+bool memdebugging = false;
+char *progname = NULL;
+isc_mutex_t lookup_lock;
+dig_lookup_t *current_lookup = NULL;
+
+#define DIG_MAX_ADDRESSES 20
+
+/*%
+ * Apply and clear locks at the event level in global task.
+ * Can I get rid of these using shutdown events? XXX
+ */
+#define LOCK_LOOKUP \
+ { \
+ debug("lock_lookup %s:%d", __FILE__, __LINE__); \
+ check_result(isc_mutex_lock((&lookup_lock)), "isc_mutex_" \
+ "lock"); \
+ debug("success"); \
+ }
+#define UNLOCK_LOOKUP \
+ { \
+ debug("unlock_lookup %s:%d", __FILE__, __LINE__); \
+ check_result(isc_mutex_unlock((&lookup_lock)), "isc_mutex_" \
+ "unlock"); \
+ }
+
+static void
+default_warnerr(const char *format, ...) {
+ va_list args;
+
+ printf(";; ");
+ va_start(args, format);
+ vprintf(format, args);
+ va_end(args);
+ printf("\n");
+}
+
+static void
+default_comments(dig_lookup_t *lookup, const char *format, ...) {
+ va_list args;
+
+ if (lookup->comments) {
+ printf(";; ");
+ va_start(args, format);
+ vprintf(format, args);
+ va_end(args);
+ printf("\n");
+ }
+}
+
+/* dynamic callbacks */
+
+isc_result_t (*dighost_printmessage)(dig_query_t *query,
+ const isc_buffer_t *msgbuf,
+ dns_message_t *msg, bool headers);
+
+void (*dighost_error)(const char *format, ...) = default_warnerr;
+
+void (*dighost_warning)(const char *format, ...) = default_warnerr;
+
+void (*dighost_comments)(dig_lookup_t *lookup, const char *format,
+ ...) = default_comments;
+
+void (*dighost_received)(unsigned int bytes, isc_sockaddr_t *from,
+ dig_query_t *query);
+
+void (*dighost_trying)(char *frm, dig_lookup_t *lookup);
+
+void (*dighost_shutdown)(void);
+
+/* forward declarations */
+
+static void
+cancel_lookup(dig_lookup_t *lookup);
+
+static void
+recv_done(isc_task_t *task, isc_event_t *event);
+
+static void
+send_udp(dig_query_t *query);
+
+static void
+connect_timeout(isc_task_t *task, isc_event_t *event);
+
+static void
+launch_next_query(dig_query_t *query, bool include_question);
+
+static void
+check_next_lookup(dig_lookup_t *lookup);
+
+static bool
+next_origin(dig_lookup_t *oldlookup);
+
+static int
+count_dots(char *string) {
+ char *s;
+ int i = 0;
+
+ s = string;
+ while (*s != '\0') {
+ if (*s == '.') {
+ i++;
+ }
+ s++;
+ }
+ return (i);
+}
+
+static void
+hex_dump(isc_buffer_t *b) {
+ unsigned int len, i;
+ isc_region_t r;
+
+ isc_buffer_usedregion(b, &r);
+
+ printf("%u bytes\n", r.length);
+ for (len = 0; len < r.length; len++) {
+ printf("%02x ", r.base[len]);
+ if (len % 16 == 15) {
+ fputs(" ", stdout);
+ for (i = len - 15; i <= len; i++) {
+ if (r.base[i] >= '!' && r.base[i] <= '}') {
+ putchar(r.base[i]);
+ } else {
+ putchar('.');
+ }
+ }
+ printf("\n");
+ }
+ }
+ if (len % 16 != 0) {
+ for (i = len; (i % 16) != 0; i++) {
+ fputs(" ", stdout);
+ }
+ fputs(" ", stdout);
+ for (i = ((len >> 4) << 4); i < len; i++) {
+ if (r.base[i] >= '!' && r.base[i] <= '}') {
+ putchar(r.base[i]);
+ } else {
+ putchar('.');
+ }
+ }
+ printf("\n");
+ }
+}
+
+/*%
+ * Append 'len' bytes of 'text' at '*p', failing with
+ * ISC_R_NOSPACE if that would advance p past 'end'.
+ */
+static isc_result_t
+append(const char *text, size_t len, char **p, char *end) {
+ if (*p + len > end) {
+ return (ISC_R_NOSPACE);
+ }
+ memmove(*p, text, len);
+ *p += len;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+reverse_octets(const char *in, char **p, char *end) {
+ const char *dot = strchr(in, '.');
+ size_t len;
+ if (dot != NULL) {
+ isc_result_t result;
+ result = reverse_octets(dot + 1, p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ result = append(".", 1, p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ len = (int)(dot - in);
+ } else {
+ len = (int)strlen(in);
+ }
+ return (append(in, len, p, end));
+}
+
+isc_result_t
+get_reverse(char *reverse, size_t len, char *value, bool strict) {
+ int r;
+ isc_result_t result;
+ isc_netaddr_t addr;
+
+ addr.family = AF_INET6;
+ r = inet_pton(AF_INET6, value, &addr.type.in6);
+ if (r > 0) {
+ /* This is a valid IPv6 address. */
+ dns_fixedname_t fname;
+ dns_name_t *name;
+ unsigned int options = 0;
+
+ name = dns_fixedname_initname(&fname);
+ result = dns_byaddr_createptrname(&addr, options, name);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ dns_name_format(name, reverse, (unsigned int)len);
+ return (ISC_R_SUCCESS);
+ } else {
+ /*
+ * Not a valid IPv6 address. Assume IPv4.
+ * If 'strict' is not set, construct the
+ * in-addr.arpa name by blindly reversing
+ * octets whether or not they look like integers,
+ * so that this can be used for RFC2317 names
+ * and such.
+ */
+ char *p = reverse;
+ char *end = reverse + len;
+ if (strict && inet_pton(AF_INET, value, &addr.type.in) != 1) {
+ return (DNS_R_BADDOTTEDQUAD);
+ }
+ result = reverse_octets(value, &p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ /* Append .in-addr.arpa. and a terminating NUL. */
+ result = append(".in-addr.arpa.", 15, &p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ return (ISC_R_SUCCESS);
+ }
+}
+
+void (*dighost_pre_exit_hook)(void) = NULL;
+
+#if TARGET_OS_IPHONE
+void
+warn(const char *format, ...) {
+ va_list args;
+
+ fflush(stdout);
+ fprintf(stderr, ";; Warning: ");
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+}
+#else /* if TARGET_OS_IPHONE */
+void
+warn(const char *format, ...) {
+ va_list args;
+
+ fflush(stdout);
+ fprintf(stderr, "%s: ", progname);
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+}
+#endif /* if TARGET_OS_IPHONE */
+
+void
+digexit(void) {
+ if (exitcode < 10) {
+ exitcode = 10;
+ }
+ if (fatalexit != 0) {
+ exitcode = fatalexit;
+ }
+ if (dighost_pre_exit_hook != NULL) {
+ dighost_pre_exit_hook();
+ }
+ exit(exitcode);
+}
+
+void
+fatal(const char *format, ...) {
+ va_list args;
+
+ fflush(stdout);
+ fprintf(stderr, "%s: ", progname);
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ digexit();
+}
+
+void
+debug(const char *format, ...) {
+ va_list args;
+ isc_time_t t;
+
+ if (debugging) {
+ fflush(stdout);
+ if (debugtiming) {
+ TIME_NOW(&t);
+ fprintf(stderr, "%u.%06u: ", isc_time_seconds(&t),
+ isc_time_nanoseconds(&t) / 1000);
+ }
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ }
+}
+
+void
+check_result(isc_result_t result, const char *msg) {
+ if (result != ISC_R_SUCCESS) {
+ fatal("%s: %s", msg, isc_result_totext(result));
+ }
+}
+
+/*%
+ * Create a server structure, which is part of the lookup structure.
+ * This is little more than a linked list of servers to query in hopes
+ * of finding the answer the user is looking for
+ */
+dig_server_t *
+make_server(const char *servname, const char *userarg) {
+ dig_server_t *srv;
+
+ REQUIRE(servname != NULL);
+
+ debug("make_server(%s)", servname);
+ srv = isc_mem_allocate(mctx, sizeof(struct dig_server));
+ strlcpy(srv->servername, servname, MXNAME);
+ strlcpy(srv->userarg, userarg, MXNAME);
+ ISC_LINK_INIT(srv, link);
+ return (srv);
+}
+
+/*%
+ * Create a copy of the server list from the resolver configuration structure.
+ * The dest list must have already had ISC_LIST_INIT applied.
+ */
+static void
+get_server_list(irs_resconf_t *resconf) {
+ isc_sockaddrlist_t *servers;
+ isc_sockaddr_t *sa;
+ dig_server_t *newsrv;
+ char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") +
+ sizeof("%4000000000")];
+ debug("get_server_list()");
+ servers = irs_resconf_getnameservers(resconf);
+ for (sa = ISC_LIST_HEAD(*servers); sa != NULL;
+ sa = ISC_LIST_NEXT(sa, link))
+ {
+ int pf = isc_sockaddr_pf(sa);
+ isc_netaddr_t na;
+ isc_result_t result;
+ isc_buffer_t b;
+
+ if (pf == AF_INET && !have_ipv4) {
+ continue;
+ }
+ if (pf == AF_INET6 && !have_ipv6) {
+ continue;
+ }
+
+ isc_buffer_init(&b, tmp, sizeof(tmp));
+ isc_netaddr_fromsockaddr(&na, sa);
+ result = isc_netaddr_totext(&na, &b);
+ if (result != ISC_R_SUCCESS) {
+ continue;
+ }
+ isc_buffer_putuint8(&b, 0);
+ if (pf == AF_INET6 && na.zone != 0) {
+ char buf[sizeof("%4000000000")];
+ snprintf(buf, sizeof(buf), "%%%u", na.zone);
+ strlcat(tmp, buf, sizeof(tmp));
+ }
+ newsrv = make_server(tmp, tmp);
+ ISC_LINK_INIT(newsrv, link);
+ ISC_LIST_APPEND(server_list, newsrv, link);
+ }
+}
+
+void
+flush_server_list(void) {
+ dig_server_t *s, *ps;
+
+ debug("flush_server_list()");
+ s = ISC_LIST_HEAD(server_list);
+ while (s != NULL) {
+ ps = s;
+ s = ISC_LIST_NEXT(s, link);
+ ISC_LIST_DEQUEUE(server_list, ps, link);
+ isc_mem_free(mctx, ps);
+ }
+}
+
+void
+set_nameserver(char *opt) {
+ isc_result_t result;
+ isc_sockaddr_t sockaddrs[DIG_MAX_ADDRESSES];
+ isc_netaddr_t netaddr;
+ int count, i;
+ dig_server_t *srv;
+ char tmp[ISC_NETADDR_FORMATSIZE];
+
+ if (opt == NULL) {
+ return;
+ }
+
+ result = bind9_getaddresses(opt, 0, sockaddrs, DIG_MAX_ADDRESSES,
+ &count);
+ if (result != ISC_R_SUCCESS) {
+ fatal("couldn't get address for '%s': %s", opt,
+ isc_result_totext(result));
+ }
+
+ flush_server_list();
+
+ for (i = 0; i < count; i++) {
+ isc_netaddr_fromsockaddr(&netaddr, &sockaddrs[i]);
+ isc_netaddr_format(&netaddr, tmp, sizeof(tmp));
+ srv = make_server(tmp, opt);
+ if (srv == NULL) {
+ fatal("memory allocation failure");
+ }
+ ISC_LIST_APPEND(server_list, srv, link);
+ }
+}
+
+/*%
+ * Produce a cloned server list. The dest list must have already had
+ * ISC_LIST_INIT applied.
+ */
+void
+clone_server_list(dig_serverlist_t src, dig_serverlist_t *dest) {
+ dig_server_t *srv, *newsrv;
+
+ debug("clone_server_list()");
+ srv = ISC_LIST_HEAD(src);
+ while (srv != NULL) {
+ newsrv = make_server(srv->servername, srv->userarg);
+ ISC_LINK_INIT(newsrv, link);
+ ISC_LIST_ENQUEUE(*dest, newsrv, link);
+ srv = ISC_LIST_NEXT(srv, link);
+ }
+}
+
+/*%
+ * Create an empty lookup structure, which holds all the information needed
+ * to get an answer to a user's question. This structure contains two
+ * linked lists: the server list (servers to query) and the query list
+ * (outstanding queries which have been made to the listed servers).
+ */
+dig_lookup_t *
+make_empty_lookup(void) {
+ dig_lookup_t *looknew;
+
+ debug("make_empty_lookup()");
+
+ INSIST(!free_now);
+
+ looknew = isc_mem_allocate(mctx, sizeof(struct dig_lookup));
+ looknew->pending = true;
+ looknew->textname[0] = 0;
+ looknew->cmdline[0] = 0;
+ looknew->rdtype = dns_rdatatype_a;
+ looknew->qrdtype = dns_rdatatype_a;
+ looknew->rdclass = dns_rdataclass_in;
+ looknew->rdtypeset = false;
+ looknew->rdclassset = false;
+ looknew->sendspace = NULL;
+ looknew->sendmsg = NULL;
+ looknew->name = NULL;
+ looknew->oname = NULL;
+ looknew->xfr_q = NULL;
+ looknew->current_query = NULL;
+ looknew->doing_xfr = false;
+ looknew->ixfr_serial = 0;
+ looknew->trace = false;
+ looknew->trace_root = false;
+ looknew->identify = false;
+ looknew->identify_previous_line = false;
+ looknew->ignore = false;
+ looknew->servfail_stops = true;
+ looknew->besteffort = true;
+ looknew->dnssec = false;
+ looknew->ednsflags = 0;
+ looknew->opcode = dns_opcode_query;
+ looknew->expire = false;
+ looknew->nsid = false;
+ looknew->tcp_keepalive = false;
+ looknew->padding = 0;
+ looknew->header_only = false;
+ looknew->sendcookie = false;
+ looknew->seenbadcookie = false;
+ looknew->badcookie = true;
+ looknew->multiline = false;
+ looknew->nottl = false;
+ looknew->noclass = false;
+ looknew->onesoa = false;
+ looknew->use_usec = false;
+ looknew->nocrypto = false;
+ looknew->ttlunits = false;
+ looknew->expandaaaa = false;
+ looknew->qr = false;
+ looknew->accept_reply_unexpected_src = false;
+#ifdef HAVE_LIBIDN2
+ looknew->idnin = isatty(1) ? (getenv("IDN_DISABLE") == NULL) : false;
+ looknew->idnout = looknew->idnin;
+#else /* ifdef HAVE_LIBIDN2 */
+ looknew->idnin = false;
+ looknew->idnout = false;
+#endif /* HAVE_LIBIDN2 */
+ looknew->udpsize = -1;
+ looknew->edns = -1;
+ looknew->recurse = true;
+ looknew->aaonly = false;
+ looknew->adflag = false;
+ looknew->cdflag = false;
+ looknew->raflag = false;
+ looknew->tcflag = false;
+ looknew->print_unknown_format = false;
+ looknew->zflag = false;
+ looknew->ns_search_only = false;
+ looknew->origin = NULL;
+ looknew->tsigctx = NULL;
+ looknew->querysig = NULL;
+ looknew->retries = tries;
+ looknew->nsfound = 0;
+ looknew->tcp_mode = false;
+ looknew->tcp_mode_set = false;
+ looknew->comments = true;
+ looknew->stats = true;
+ looknew->section_question = true;
+ looknew->section_answer = true;
+ looknew->section_authority = true;
+ looknew->section_additional = true;
+ looknew->new_search = false;
+ looknew->done_as_is = false;
+ looknew->need_search = false;
+ looknew->ecs_addr = NULL;
+ looknew->cookie = NULL;
+ looknew->ednsopts = NULL;
+ looknew->ednsoptscnt = 0;
+ looknew->ednsneg = true;
+ looknew->mapped = true;
+ looknew->dscp = -1;
+ looknew->rrcomments = 0;
+ looknew->eoferr = 0;
+ dns_fixedname_init(&looknew->fdomain);
+ ISC_LINK_INIT(looknew, link);
+ ISC_LIST_INIT(looknew->q);
+ ISC_LIST_INIT(looknew->connecting);
+ ISC_LIST_INIT(looknew->my_server_list);
+ return (looknew);
+}
+
+#define EDNSOPT_OPTIONS 100U
+
+static void
+cloneopts(dig_lookup_t *looknew, dig_lookup_t *lookold) {
+ size_t len = sizeof(looknew->ednsopts[0]) * EDNSOPT_OPTIONS;
+ size_t i;
+ looknew->ednsopts = isc_mem_allocate(mctx, len);
+ for (i = 0; i < EDNSOPT_OPTIONS; i++) {
+ looknew->ednsopts[i].code = 0;
+ looknew->ednsopts[i].length = 0;
+ looknew->ednsopts[i].value = NULL;
+ }
+ looknew->ednsoptscnt = 0;
+ if (lookold == NULL || lookold->ednsopts == NULL) {
+ return;
+ }
+
+ for (i = 0; i < lookold->ednsoptscnt; i++) {
+ len = lookold->ednsopts[i].length;
+ if (len != 0) {
+ INSIST(lookold->ednsopts[i].value != NULL);
+ looknew->ednsopts[i].value = isc_mem_allocate(mctx,
+ len);
+ memmove(looknew->ednsopts[i].value,
+ lookold->ednsopts[i].value, len);
+ }
+ looknew->ednsopts[i].code = lookold->ednsopts[i].code;
+ looknew->ednsopts[i].length = len;
+ }
+ looknew->ednsoptscnt = lookold->ednsoptscnt;
+}
+
+/*%
+ * Clone a lookup, perhaps copying the server list. This does not clone
+ * the query list, since it will be regenerated by the setup_lookup()
+ * function, nor does it queue up the new lookup for processing.
+ * Caution: If you don't clone the servers, you MUST clone the server
+ * list separately from somewhere else, or construct it by hand.
+ */
+dig_lookup_t *
+clone_lookup(dig_lookup_t *lookold, bool servers) {
+ dig_lookup_t *looknew;
+
+ debug("clone_lookup(%p)", lookold);
+
+ INSIST(!free_now);
+
+ looknew = make_empty_lookup();
+ INSIST(looknew != NULL);
+ strlcpy(looknew->textname, lookold->textname, MXNAME);
+ strlcpy(looknew->cmdline, lookold->cmdline, MXNAME);
+ looknew->textname[MXNAME - 1] = 0;
+ looknew->rdtype = lookold->rdtype;
+ looknew->qrdtype = lookold->qrdtype;
+ looknew->rdclass = lookold->rdclass;
+ looknew->rdtypeset = lookold->rdtypeset;
+ looknew->rdclassset = lookold->rdclassset;
+ looknew->doing_xfr = lookold->doing_xfr;
+ looknew->ixfr_serial = lookold->ixfr_serial;
+ looknew->trace = lookold->trace;
+ looknew->trace_root = lookold->trace_root;
+ looknew->identify = lookold->identify;
+ looknew->identify_previous_line = lookold->identify_previous_line;
+ looknew->ignore = lookold->ignore;
+ looknew->servfail_stops = lookold->servfail_stops;
+ looknew->besteffort = lookold->besteffort;
+ looknew->dnssec = lookold->dnssec;
+ looknew->ednsflags = lookold->ednsflags;
+ looknew->opcode = lookold->opcode;
+ looknew->expire = lookold->expire;
+ looknew->nsid = lookold->nsid;
+ looknew->tcp_keepalive = lookold->tcp_keepalive;
+ looknew->header_only = lookold->header_only;
+ looknew->sendcookie = lookold->sendcookie;
+ looknew->seenbadcookie = lookold->seenbadcookie;
+ looknew->badcookie = lookold->badcookie;
+ looknew->cookie = lookold->cookie;
+ if (lookold->ednsopts != NULL) {
+ cloneopts(looknew, lookold);
+ } else {
+ looknew->ednsopts = NULL;
+ looknew->ednsoptscnt = 0;
+ }
+ looknew->ednsneg = lookold->ednsneg;
+ looknew->padding = lookold->padding;
+ looknew->mapped = lookold->mapped;
+ looknew->multiline = lookold->multiline;
+ looknew->nottl = lookold->nottl;
+ looknew->noclass = lookold->noclass;
+ looknew->onesoa = lookold->onesoa;
+ looknew->use_usec = lookold->use_usec;
+ looknew->nocrypto = lookold->nocrypto;
+ looknew->ttlunits = lookold->ttlunits;
+ looknew->expandaaaa = lookold->expandaaaa;
+ looknew->qr = lookold->qr;
+ looknew->accept_reply_unexpected_src =
+ lookold->accept_reply_unexpected_src;
+ looknew->idnin = lookold->idnin;
+ looknew->idnout = lookold->idnout;
+ looknew->udpsize = lookold->udpsize;
+ looknew->edns = lookold->edns;
+ looknew->recurse = lookold->recurse;
+ looknew->aaonly = lookold->aaonly;
+ looknew->adflag = lookold->adflag;
+ looknew->cdflag = lookold->cdflag;
+ looknew->raflag = lookold->raflag;
+ looknew->tcflag = lookold->tcflag;
+ looknew->print_unknown_format = lookold->print_unknown_format;
+ looknew->zflag = lookold->zflag;
+ looknew->ns_search_only = lookold->ns_search_only;
+ looknew->tcp_mode = lookold->tcp_mode;
+ looknew->tcp_mode_set = lookold->tcp_mode_set;
+ looknew->comments = lookold->comments;
+ looknew->stats = lookold->stats;
+ looknew->section_question = lookold->section_question;
+ looknew->section_answer = lookold->section_answer;
+ looknew->section_authority = lookold->section_authority;
+ looknew->section_additional = lookold->section_additional;
+ looknew->origin = lookold->origin;
+ looknew->retries = lookold->retries;
+ looknew->tsigctx = NULL;
+ looknew->need_search = lookold->need_search;
+ looknew->done_as_is = lookold->done_as_is;
+ looknew->dscp = lookold->dscp;
+ looknew->rrcomments = lookold->rrcomments;
+ looknew->eoferr = lookold->eoferr;
+
+ if (lookold->ecs_addr != NULL) {
+ size_t len = sizeof(isc_sockaddr_t);
+ looknew->ecs_addr = isc_mem_allocate(mctx, len);
+ memmove(looknew->ecs_addr, lookold->ecs_addr, len);
+ }
+
+ dns_name_copynf(dns_fixedname_name(&lookold->fdomain),
+ dns_fixedname_name(&looknew->fdomain));
+
+ if (servers) {
+ clone_server_list(lookold->my_server_list,
+ &looknew->my_server_list);
+ }
+ return (looknew);
+}
+
+/*%
+ * Requeue a lookup for further processing, perhaps copying the server
+ * list. The new lookup structure is returned to the caller, and is
+ * queued for processing. If servers are not cloned in the requeue, they
+ * must be added before allowing the current event to complete, since the
+ * completion of the event may result in the next entry on the lookup
+ * queue getting run.
+ */
+dig_lookup_t *
+requeue_lookup(dig_lookup_t *lookold, bool servers) {
+ dig_lookup_t *looknew;
+
+ debug("requeue_lookup(%p)", lookold);
+
+ lookup_counter++;
+ if (lookup_counter > LOOKUP_LIMIT) {
+ fatal("too many lookups");
+ }
+
+ looknew = clone_lookup(lookold, servers);
+ INSIST(looknew != NULL);
+
+ debug("before insertion, init@%p -> %p, new@%p -> %p", lookold,
+ lookold->link.next, looknew, looknew->link.next);
+ ISC_LIST_PREPEND(lookup_list, looknew, link);
+ debug("after insertion, init -> %p, new = %p, new -> %p", lookold,
+ looknew, looknew->link.next);
+ return (looknew);
+}
+
+void
+setup_text_key(void) {
+ isc_result_t result;
+ dns_name_t keyname;
+ isc_buffer_t secretbuf;
+ unsigned int secretsize;
+ unsigned char *secretstore;
+
+ debug("setup_text_key()");
+ isc_buffer_allocate(mctx, &namebuf, MXNAME);
+ dns_name_init(&keyname, NULL);
+ isc_buffer_putstr(namebuf, keynametext);
+ secretsize = (unsigned int)strlen(keysecret) * 3 / 4;
+ secretstore = isc_mem_allocate(mctx, secretsize);
+ isc_buffer_init(&secretbuf, secretstore, secretsize);
+ result = isc_base64_decodestring(keysecret, &secretbuf);
+ if (result != ISC_R_SUCCESS) {
+ goto failure;
+ }
+
+ secretsize = isc_buffer_usedlength(&secretbuf);
+
+ if (hmacname == NULL) {
+ result = DST_R_UNSUPPORTEDALG;
+ goto failure;
+ }
+
+ result = dns_name_fromtext(&keyname, namebuf, dns_rootname, 0, namebuf);
+ if (result != ISC_R_SUCCESS) {
+ goto failure;
+ }
+
+ result = dns_tsigkey_create(&keyname, hmacname, secretstore,
+ (int)secretsize, false, NULL, 0, 0, mctx,
+ NULL, &tsigkey);
+failure:
+ if (result != ISC_R_SUCCESS) {
+ printf(";; Couldn't create key %s: %s\n", keynametext,
+ isc_result_totext(result));
+ } else {
+ dst_key_setbits(tsigkey->key, digestbits);
+ }
+
+ isc_mem_free(mctx, secretstore);
+ dns_name_invalidate(&keyname);
+ isc_buffer_free(&namebuf);
+}
+
+static isc_result_t
+parse_uint_helper(uint32_t *uip, const char *value, uint32_t max,
+ const char *desc, int base) {
+ uint32_t n;
+ isc_result_t result = isc_parse_uint32(&n, value, base);
+ if (result == ISC_R_SUCCESS && n > max) {
+ result = ISC_R_RANGE;
+ }
+ if (result != ISC_R_SUCCESS) {
+ printf("invalid %s '%s': %s\n", desc, value,
+ isc_result_totext(result));
+ return (result);
+ }
+ *uip = n;
+ return (ISC_R_SUCCESS);
+}
+
+isc_result_t
+parse_uint(uint32_t *uip, const char *value, uint32_t max, const char *desc) {
+ return (parse_uint_helper(uip, value, max, desc, 10));
+}
+
+isc_result_t
+parse_xint(uint32_t *uip, const char *value, uint32_t max, const char *desc) {
+ return (parse_uint_helper(uip, value, max, desc, 0));
+}
+
+static uint32_t
+parse_bits(char *arg, const char *desc, uint32_t max) {
+ isc_result_t result;
+ uint32_t tmp;
+
+ result = parse_uint(&tmp, arg, max, desc);
+ if (result != ISC_R_SUCCESS) {
+ fatal("couldn't parse digest bits");
+ }
+ tmp = (tmp + 7) & ~0x7U;
+ return (tmp);
+}
+
+isc_result_t
+parse_netprefix(isc_sockaddr_t **sap, const char *value) {
+ isc_result_t result = ISC_R_SUCCESS;
+ isc_sockaddr_t *sa = NULL;
+ struct in_addr in4;
+ struct in6_addr in6;
+ uint32_t prefix_length = 0xffffffff;
+ char *slash = NULL;
+ bool parsed = false;
+ bool prefix_parsed = false;
+ char buf[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:XXX.XXX.XXX.XXX/128")];
+
+ REQUIRE(sap != NULL && *sap == NULL);
+
+ if (strlcpy(buf, value, sizeof(buf)) >= sizeof(buf)) {
+ fatal("invalid prefix '%s'\n", value);
+ }
+
+ sa = isc_mem_allocate(mctx, sizeof(*sa));
+ memset(sa, 0, sizeof(*sa));
+
+ if (strcmp(buf, "0") == 0) {
+ sa->type.sa.sa_family = AF_UNSPEC;
+ prefix_length = 0;
+ goto done;
+ }
+
+ slash = strchr(buf, '/');
+ if (slash != NULL) {
+ *slash = '\0';
+ result = isc_parse_uint32(&prefix_length, slash + 1, 10);
+ if (result != ISC_R_SUCCESS) {
+ fatal("invalid prefix length in '%s': %s\n", value,
+ isc_result_totext(result));
+ }
+ prefix_parsed = true;
+ }
+
+ if (inet_pton(AF_INET6, buf, &in6) == 1) {
+ parsed = true;
+ isc_sockaddr_fromin6(sa, &in6, 0);
+ if (prefix_length > 128) {
+ prefix_length = 128;
+ }
+ } else if (inet_pton(AF_INET, buf, &in4) == 1) {
+ parsed = true;
+ isc_sockaddr_fromin(sa, &in4, 0);
+ if (prefix_length > 32) {
+ prefix_length = 32;
+ }
+ } else if (prefix_parsed) {
+ int i;
+
+ for (i = 0; i < 3 && strlen(buf) < sizeof(buf) - 2; i++) {
+ strlcat(buf, ".0", sizeof(buf));
+ if (inet_pton(AF_INET, buf, &in4) == 1) {
+ parsed = true;
+ isc_sockaddr_fromin(sa, &in4, 0);
+ break;
+ }
+ }
+
+ if (prefix_length > 32) {
+ prefix_length = 32;
+ }
+ }
+
+ if (!parsed) {
+ fatal("invalid address '%s'", value);
+ }
+
+done:
+ sa->length = prefix_length;
+ *sap = sa;
+
+ return (ISC_R_SUCCESS);
+}
+
+/*
+ * Parse HMAC algorithm specification
+ */
+void
+parse_hmac(const char *hmac) {
+ char buf[20];
+ size_t len;
+
+ REQUIRE(hmac != NULL);
+
+ len = strlen(hmac);
+ if (len >= sizeof(buf)) {
+ fatal("unknown key type '%.*s'", (int)len, hmac);
+ }
+ strlcpy(buf, hmac, sizeof(buf));
+
+ digestbits = 0;
+
+ if (strcasecmp(buf, "hmac-md5") == 0) {
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ } else if (strncasecmp(buf, "hmac-md5-", 9) == 0) {
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ digestbits = parse_bits(&buf[9], "digest-bits [0..128]", 128);
+ } else if (strcasecmp(buf, "hmac-sha1") == 0) {
+ hmacname = DNS_TSIG_HMACSHA1_NAME;
+ digestbits = 0;
+ } else if (strncasecmp(buf, "hmac-sha1-", 10) == 0) {
+ hmacname = DNS_TSIG_HMACSHA1_NAME;
+ digestbits = parse_bits(&buf[10], "digest-bits [0..160]", 160);
+ } else if (strcasecmp(buf, "hmac-sha224") == 0) {
+ hmacname = DNS_TSIG_HMACSHA224_NAME;
+ } else if (strncasecmp(buf, "hmac-sha224-", 12) == 0) {
+ hmacname = DNS_TSIG_HMACSHA224_NAME;
+ digestbits = parse_bits(&buf[12], "digest-bits [0..224]", 224);
+ } else if (strcasecmp(buf, "hmac-sha256") == 0) {
+ hmacname = DNS_TSIG_HMACSHA256_NAME;
+ } else if (strncasecmp(buf, "hmac-sha256-", 12) == 0) {
+ hmacname = DNS_TSIG_HMACSHA256_NAME;
+ digestbits = parse_bits(&buf[12], "digest-bits [0..256]", 256);
+ } else if (strcasecmp(buf, "hmac-sha384") == 0) {
+ hmacname = DNS_TSIG_HMACSHA384_NAME;
+ } else if (strncasecmp(buf, "hmac-sha384-", 12) == 0) {
+ hmacname = DNS_TSIG_HMACSHA384_NAME;
+ digestbits = parse_bits(&buf[12], "digest-bits [0..384]", 384);
+ } else if (strcasecmp(buf, "hmac-sha512") == 0) {
+ hmacname = DNS_TSIG_HMACSHA512_NAME;
+ } else if (strncasecmp(buf, "hmac-sha512-", 12) == 0) {
+ hmacname = DNS_TSIG_HMACSHA512_NAME;
+ digestbits = parse_bits(&buf[12], "digest-bits [0..512]", 512);
+ } else {
+ fprintf(stderr,
+ ";; Warning, ignoring "
+ "invalid TSIG algorithm %s\n",
+ buf);
+ }
+}
+
+/*
+ * Get a key from a named.conf format keyfile
+ */
+static isc_result_t
+read_confkey(void) {
+ cfg_parser_t *pctx = NULL;
+ cfg_obj_t *file = NULL;
+ const cfg_obj_t *keyobj = NULL;
+ const cfg_obj_t *secretobj = NULL;
+ const cfg_obj_t *algorithmobj = NULL;
+ const char *keyname;
+ const char *secretstr;
+ const char *algorithm;
+ isc_result_t result;
+
+ if (!isc_file_exists(keyfile)) {
+ return (ISC_R_FILENOTFOUND);
+ }
+
+ result = cfg_parser_create(mctx, NULL, &pctx);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+
+ result = cfg_parse_file(pctx, keyfile, &cfg_type_sessionkey, &file);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+
+ result = cfg_map_get(file, "key", &keyobj);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+
+ (void)cfg_map_get(keyobj, "secret", &secretobj);
+ (void)cfg_map_get(keyobj, "algorithm", &algorithmobj);
+ if (secretobj == NULL || algorithmobj == NULL) {
+ fatal("key must have algorithm and secret");
+ }
+
+ keyname = cfg_obj_asstring(cfg_map_getname(keyobj));
+ secretstr = cfg_obj_asstring(secretobj);
+ algorithm = cfg_obj_asstring(algorithmobj);
+
+ strlcpy(keynametext, keyname, sizeof(keynametext));
+ strlcpy(keysecret, secretstr, sizeof(keysecret));
+ parse_hmac(algorithm);
+ setup_text_key();
+
+cleanup:
+ if (pctx != NULL) {
+ if (file != NULL) {
+ cfg_obj_destroy(pctx, &file);
+ }
+ cfg_parser_destroy(&pctx);
+ }
+
+ return (result);
+}
+
+void
+setup_file_key(void) {
+ isc_result_t result;
+ dst_key_t *dstkey = NULL;
+
+ debug("setup_file_key()");
+
+ /* Try reading the key from a K* pair */
+ result = dst_key_fromnamedfile(
+ keyfile, NULL, DST_TYPE_PRIVATE | DST_TYPE_KEY, mctx, &dstkey);
+
+ /* If that didn't work, try reading it as a session.key keyfile */
+ if (result != ISC_R_SUCCESS) {
+ result = read_confkey();
+ if (result == ISC_R_SUCCESS) {
+ return;
+ }
+ }
+
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "Couldn't read key from %s: %s\n", keyfile,
+ isc_result_totext(result));
+ goto failure;
+ }
+
+ switch (dst_key_alg(dstkey)) {
+ case DST_ALG_HMACMD5:
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ break;
+ case DST_ALG_HMACSHA1:
+ hmacname = DNS_TSIG_HMACSHA1_NAME;
+ break;
+ case DST_ALG_HMACSHA224:
+ hmacname = DNS_TSIG_HMACSHA224_NAME;
+ break;
+ case DST_ALG_HMACSHA256:
+ hmacname = DNS_TSIG_HMACSHA256_NAME;
+ break;
+ case DST_ALG_HMACSHA384:
+ hmacname = DNS_TSIG_HMACSHA384_NAME;
+ break;
+ case DST_ALG_HMACSHA512:
+ hmacname = DNS_TSIG_HMACSHA512_NAME;
+ break;
+ default:
+ printf(";; Couldn't create key %s: bad algorithm\n",
+ keynametext);
+ goto failure;
+ }
+ result = dns_tsigkey_createfromkey(dst_key_name(dstkey), hmacname,
+ dstkey, false, NULL, 0, 0, mctx,
+ NULL, &tsigkey);
+ if (result != ISC_R_SUCCESS) {
+ printf(";; Couldn't create key %s: %s\n", keynametext,
+ isc_result_totext(result));
+ goto failure;
+ }
+failure:
+ if (dstkey != NULL) {
+ dst_key_free(&dstkey);
+ }
+}
+
+static dig_searchlist_t *
+make_searchlist_entry(char *domain) {
+ dig_searchlist_t *search;
+ search = isc_mem_allocate(mctx, sizeof(*search));
+ strlcpy(search->origin, domain, MXNAME);
+ search->origin[MXNAME - 1] = 0;
+ ISC_LINK_INIT(search, link);
+ return (search);
+}
+
+static void
+clear_searchlist(void) {
+ dig_searchlist_t *search;
+ while ((search = ISC_LIST_HEAD(search_list)) != NULL) {
+ ISC_LIST_UNLINK(search_list, search, link);
+ isc_mem_free(mctx, search);
+ }
+}
+
+static void
+create_search_list(irs_resconf_t *resconf) {
+ irs_resconf_searchlist_t *list;
+ irs_resconf_search_t *entry;
+ dig_searchlist_t *search;
+
+ debug("create_search_list()");
+ clear_searchlist();
+
+ list = irs_resconf_getsearchlist(resconf);
+ for (entry = ISC_LIST_HEAD(*list); entry != NULL;
+ entry = ISC_LIST_NEXT(entry, link))
+ {
+ search = make_searchlist_entry(entry->domain);
+ ISC_LIST_APPEND(search_list, search, link);
+ }
+}
+
+/*%
+ * Append 'addr' to the list of servers to be queried. This function is only
+ * called when no server addresses are explicitly specified and either libirs
+ * returns an empty list of servers to use or none of the addresses returned by
+ * libirs are usable due to the specified address family restrictions.
+ */
+static void
+add_fallback_nameserver(const char *addr) {
+ dig_server_t *server = make_server(addr, addr);
+ ISC_LINK_INIT(server, link);
+ ISC_LIST_APPEND(server_list, server, link);
+}
+
+/*%
+ * Setup the system as a whole, reading key information and resolv.conf
+ * settings.
+ */
+void
+setup_system(bool ipv4only, bool ipv6only) {
+ irs_resconf_t *resconf = NULL;
+ isc_result_t result;
+
+ debug("setup_system()");
+
+ if (ipv4only) {
+ if (have_ipv4) {
+ isc_net_disableipv6();
+ have_ipv6 = false;
+ } else {
+ fatal("can't find IPv4 networking");
+ }
+ }
+
+ if (ipv6only) {
+ if (have_ipv6) {
+ isc_net_disableipv4();
+ have_ipv4 = false;
+ } else {
+ fatal("can't find IPv6 networking");
+ }
+ }
+
+ result = irs_resconf_load(mctx, RESOLV_CONF, &resconf);
+ if (result != ISC_R_SUCCESS && result != ISC_R_FILENOTFOUND) {
+ fatal("parse of %s failed", RESOLV_CONF);
+ }
+
+ create_search_list(resconf);
+ if (ndots == -1) {
+ ndots = irs_resconf_getndots(resconf);
+ debug("ndots is %d.", ndots);
+ }
+
+ /* If user doesn't specify server use nameservers from resolv.conf. */
+ if (ISC_LIST_EMPTY(server_list)) {
+ get_server_list(resconf);
+ }
+
+ /* If we don't find a nameserver fall back to localhost */
+ if (ISC_LIST_EMPTY(server_list)) {
+ if (have_ipv6) {
+ add_fallback_nameserver("::1");
+ }
+ if (have_ipv4) {
+ add_fallback_nameserver("127.0.0.1");
+ }
+ }
+
+ irs_resconf_destroy(&resconf);
+
+ if (keyfile[0] != 0) {
+ setup_file_key();
+ } else if (keysecret[0] != 0) {
+ setup_text_key();
+ }
+
+ isc_nonce_buf(cookie_secret, sizeof(cookie_secret));
+}
+
+/*%
+ * Override the search list derived from resolv.conf by 'domain'.
+ */
+void
+set_search_domain(char *domain) {
+ dig_searchlist_t *search;
+
+ clear_searchlist();
+ search = make_searchlist_entry(domain);
+ ISC_LIST_APPEND(search_list, search, link);
+}
+
+/*%
+ * Setup the ISC and DNS libraries for use by the system.
+ */
+void
+setup_libs(void) {
+ isc_result_t result;
+ isc_logconfig_t *logconfig = NULL;
+
+ debug("setup_libs()");
+
+#if USE_PKCS11
+ pk11_result_register();
+#endif /* if USE_PKCS11 */
+ dns_result_register();
+
+ result = isc_net_probeipv4();
+ if (result == ISC_R_SUCCESS) {
+ have_ipv4 = true;
+ }
+
+ result = isc_net_probeipv6();
+ if (result == ISC_R_SUCCESS) {
+ have_ipv6 = true;
+ }
+ if (!have_ipv6 && !have_ipv4) {
+ fatal("can't find either v4 or v6 networking");
+ }
+
+ isc_mem_create(&mctx);
+ isc_mem_setname(mctx, "dig", NULL);
+
+ isc_log_create(mctx, &lctx, &logconfig);
+ isc_log_setcontext(lctx);
+ dns_log_init(lctx);
+ dns_log_setcontext(lctx);
+
+ result = isc_log_usechannel(logconfig, "default_debug", NULL, NULL);
+ check_result(result, "isc_log_usechannel");
+
+ isc_log_setdebuglevel(lctx, 0);
+
+ result = isc_managers_create(mctx, 1, 0, &netmgr, &taskmgr);
+ check_result(result, "isc_managers_create");
+
+ result = isc_task_create(taskmgr, 0, &global_task);
+ check_result(result, "isc_task_create");
+ isc_task_setname(global_task, "dig", NULL);
+
+ result = isc_timermgr_create(mctx, &timermgr);
+ check_result(result, "isc_timermgr_create");
+
+ result = isc_socketmgr_create(mctx, &socketmgr);
+ check_result(result, "isc_socketmgr_create");
+
+ result = dst_lib_init(mctx, NULL);
+ check_result(result, "dst_lib_init");
+ is_dst_up = true;
+
+ isc_mutex_init(&lookup_lock);
+}
+
+typedef struct dig_ednsoptname {
+ uint32_t code;
+ const char *name;
+} dig_ednsoptname_t;
+
+dig_ednsoptname_t optnames[] = {
+ { 1, "LLQ" }, /* draft-sekar-dns-llq */
+ { 3, "NSID" }, /* RFC 5001 */
+ { 5, "DAU" }, /* RFC 6975 */
+ { 6, "DHU" }, /* RFC 6975 */
+ { 7, "N3U" }, /* RFC 6975 */
+ { 8, "ECS" }, /* RFC 7871 */
+ { 9, "EXPIRE" }, /* RFC 7314 */
+ { 10, "COOKIE" }, /* RFC 7873 */
+ { 11, "KEEPALIVE" }, /* RFC 7828 */
+ { 12, "PADDING" }, /* RFC 7830 */
+ { 12, "PAD" }, /* shorthand */
+ { 13, "CHAIN" }, /* RFC 7901 */
+ { 14, "KEY-TAG" }, /* RFC 8145 */
+ { 15, "EDE" }, /* ietf-dnsop-extended-error-16 */
+ { 16, "CLIENT-TAG" }, /* draft-bellis-dnsop-edns-tags */
+ { 17, "SERVER-TAG" }, /* draft-bellis-dnsop-edns-tags */
+ { 26946, "DEVICEID" }, /* Brian Hartvigsen */
+};
+
+#define N_EDNS_OPTNAMES (sizeof(optnames) / sizeof(optnames[0]))
+
+void
+save_opt(dig_lookup_t *lookup, char *code, char *value) {
+ isc_result_t result;
+ uint32_t num = 0;
+ isc_buffer_t b;
+ bool found = false;
+ unsigned int i;
+
+ if (lookup->ednsoptscnt >= EDNSOPT_OPTIONS) {
+ fatal("too many ednsopts");
+ }
+
+ for (i = 0; i < N_EDNS_OPTNAMES; i++) {
+ if (strcasecmp(code, optnames[i].name) == 0) {
+ num = optnames[i].code;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ result = parse_uint(&num, code, 65535, "ednsopt");
+ if (result != ISC_R_SUCCESS) {
+ fatal("bad edns code point: %s", code);
+ }
+ }
+
+ if (lookup->ednsopts == NULL) {
+ cloneopts(lookup, NULL);
+ }
+
+ if (lookup->ednsopts[lookup->ednsoptscnt].value != NULL) {
+ isc_mem_free(mctx, lookup->ednsopts[lookup->ednsoptscnt].value);
+ }
+
+ lookup->ednsopts[lookup->ednsoptscnt].code = num;
+ lookup->ednsopts[lookup->ednsoptscnt].length = 0;
+ lookup->ednsopts[lookup->ednsoptscnt].value = NULL;
+
+ if (value != NULL) {
+ char *buf;
+ buf = isc_mem_allocate(mctx, strlen(value) / 2 + 1);
+ isc_buffer_init(&b, buf, (unsigned int)strlen(value) / 2 + 1);
+ result = isc_hex_decodestring(value, &b);
+ check_result(result, "isc_hex_decodestring");
+ lookup->ednsopts[lookup->ednsoptscnt].value =
+ isc_buffer_base(&b);
+ lookup->ednsopts[lookup->ednsoptscnt].length =
+ isc_buffer_usedlength(&b);
+ }
+
+ lookup->ednsoptscnt++;
+}
+
+/*%
+ * Add EDNS0 option record to a message. Currently, the only supported
+ * options are UDP buffer size, the DO bit, and EDNS options
+ * (e.g., NSID, COOKIE, client-subnet)
+ */
+static void
+add_opt(dns_message_t *msg, uint16_t udpsize, uint16_t edns, unsigned int flags,
+ dns_ednsopt_t *opts, size_t count) {
+ dns_rdataset_t *rdataset = NULL;
+ isc_result_t result;
+
+ debug("add_opt()");
+ result = dns_message_buildopt(msg, &rdataset, edns, udpsize, flags,
+ opts, count);
+ check_result(result, "dns_message_buildopt");
+ result = dns_message_setopt(msg, rdataset);
+ check_result(result, "dns_message_setopt");
+}
+
+/*%
+ * Add a question section to a message, asking for the specified name,
+ * type, and class.
+ */
+static void
+add_question(dns_message_t *message, dns_name_t *name, dns_rdataclass_t rdclass,
+ dns_rdatatype_t rdtype) {
+ dns_rdataset_t *rdataset;
+ isc_result_t result;
+
+ debug("add_question()");
+ rdataset = NULL;
+ result = dns_message_gettemprdataset(message, &rdataset);
+ check_result(result, "dns_message_gettemprdataset()");
+ dns_rdataset_makequestion(rdataset, rdclass, rdtype);
+ ISC_LIST_APPEND(name->list, rdataset, link);
+}
+
+/*%
+ * Check if we're done with all the queued lookups, which is true iff
+ * all sockets, sends, and recvs are accounted for (counters == 0),
+ * and the lookup list is empty.
+ * If we are done, pass control back out to dighost_shutdown() (which is
+ * part of dig.c, host.c, or nslookup.c) to either shutdown the system as
+ * a whole or reseed the lookup list.
+ */
+static void
+check_if_done(void) {
+ debug("check_if_done()");
+ debug("list %s", ISC_LIST_EMPTY(lookup_list) ? "empty" : "full");
+ if (ISC_LIST_EMPTY(lookup_list) && current_lookup == NULL &&
+ sendcount == 0)
+ {
+ INSIST(sockcount == 0);
+ INSIST(recvcount == 0);
+ debug("shutting down");
+ dighost_shutdown();
+ }
+}
+
+/*%
+ * Clear out a query when we're done with it. WARNING: This routine
+ * WILL invalidate the query pointer.
+ */
+static void
+clear_query(dig_query_t *query) {
+ dig_lookup_t *lookup;
+
+ REQUIRE(query != NULL);
+
+ debug("clear_query(%p)", query);
+
+ if (query->timer != NULL) {
+ isc_timer_destroy(&query->timer);
+ }
+ lookup = query->lookup;
+
+ if (lookup->current_query == query) {
+ lookup->current_query = NULL;
+ }
+
+ if (ISC_LINK_LINKED(query, link)) {
+ query->saved_next = ISC_LIST_NEXT(query, link);
+ ISC_LIST_UNLINK(lookup->q, query, link);
+ }
+ if (ISC_LINK_LINKED(query, clink)) {
+ ISC_LIST_UNLINK(lookup->connecting, query, clink);
+ }
+ INSIST(query->recvspace != NULL);
+
+ if (query->sock != NULL) {
+ isc_socket_detach(&query->sock);
+ sockcount--;
+ debug("sockcount=%d", sockcount);
+ }
+ isc_mem_put(mctx, query->recvspace, COMMSIZE);
+ isc_mem_put(mctx, query->tmpsendspace, COMMSIZE);
+ isc_buffer_invalidate(&query->recvbuf);
+ isc_buffer_invalidate(&query->lengthbuf);
+
+ if (query->waiting_senddone) {
+ debug("waiting senddone, delay freeing query");
+ query->pending_free = true;
+ } else {
+ query->magic = 0;
+ isc_mem_free(mctx, query);
+ }
+}
+
+/*%
+ * Try and clear out a lookup if we're done with it. Return true if
+ * the lookup was successfully cleared. If true is returned, the
+ * lookup pointer has been invalidated.
+ */
+static bool
+try_clear_lookup(dig_lookup_t *lookup) {
+ dig_query_t *q;
+
+ REQUIRE(lookup != NULL);
+
+ debug("try_clear_lookup(%p)", lookup);
+
+ if (ISC_LIST_HEAD(lookup->q) != NULL ||
+ ISC_LIST_HEAD(lookup->connecting) != NULL)
+ {
+ if (debugging) {
+ q = ISC_LIST_HEAD(lookup->q);
+ while (q != NULL) {
+ debug("query to %s still pending", q->servname);
+ q = ISC_LIST_NEXT(q, link);
+ }
+
+ q = ISC_LIST_HEAD(lookup->connecting);
+ while (q != NULL) {
+ debug("query to %s still connecting",
+ q->servname);
+ q = ISC_LIST_NEXT(q, clink);
+ }
+ }
+ return (false);
+ }
+
+ /*
+ * At this point, we know there are no queries on the lookup,
+ * so can make it go away also.
+ */
+ destroy_lookup(lookup);
+ return (true);
+}
+
+void
+destroy_lookup(dig_lookup_t *lookup) {
+ dig_server_t *s;
+ void *ptr;
+
+ debug("destroy");
+ s = ISC_LIST_HEAD(lookup->my_server_list);
+ while (s != NULL) {
+ debug("freeing server %p belonging to %p", s, lookup);
+ ptr = s;
+ s = ISC_LIST_NEXT(s, link);
+ ISC_LIST_DEQUEUE(lookup->my_server_list, (dig_server_t *)ptr,
+ link);
+ isc_mem_free(mctx, ptr);
+ }
+ if (lookup->sendmsg != NULL) {
+ dns_message_detach(&lookup->sendmsg);
+ }
+ if (lookup->querysig != NULL) {
+ debug("freeing buffer %p", lookup->querysig);
+ isc_buffer_free(&lookup->querysig);
+ }
+ if (lookup->sendspace != NULL) {
+ isc_mem_put(mctx, lookup->sendspace, COMMSIZE);
+ }
+
+ if (lookup->tsigctx != NULL) {
+ dst_context_destroy(&lookup->tsigctx);
+ }
+
+ if (lookup->ecs_addr != NULL) {
+ isc_mem_free(mctx, lookup->ecs_addr);
+ }
+
+ if (lookup->ednsopts != NULL) {
+ size_t i;
+ for (i = 0; i < EDNSOPT_OPTIONS; i++) {
+ if (lookup->ednsopts[i].value != NULL) {
+ isc_mem_free(mctx, lookup->ednsopts[i].value);
+ }
+ }
+ isc_mem_free(mctx, lookup->ednsopts);
+ }
+
+ isc_mem_free(mctx, lookup);
+}
+
+/*%
+ * If we can, start the next lookup in the queue running.
+ * This assumes that the lookup on the head of the queue hasn't been
+ * started yet. It also removes the lookup from the head of the queue,
+ * setting the current_lookup pointer pointing to it.
+ */
+void
+start_lookup(void) {
+ debug("start_lookup()");
+ if (cancel_now) {
+ return;
+ }
+
+ /*
+ * If there's a current lookup running, we really shouldn't get
+ * here.
+ */
+ INSIST(current_lookup == NULL);
+
+ current_lookup = ISC_LIST_HEAD(lookup_list);
+ /*
+ * Put the current lookup somewhere so cancel_all can find it
+ */
+ if (current_lookup != NULL) {
+ ISC_LIST_DEQUEUE(lookup_list, current_lookup, link);
+ if (setup_lookup(current_lookup)) {
+ do_lookup(current_lookup);
+ } else if (next_origin(current_lookup)) {
+ check_next_lookup(current_lookup);
+ }
+ } else {
+ check_if_done();
+ }
+}
+
+/*%
+ * If we can, clear the current lookup and start the next one running.
+ * This calls try_clear_lookup, so may invalidate the lookup pointer.
+ */
+static void
+check_next_lookup(dig_lookup_t *lookup) {
+ INSIST(!free_now);
+
+ debug("check_next_lookup(%p)", lookup);
+
+ if (ISC_LIST_HEAD(lookup->q) != NULL) {
+ debug("still have a worker");
+ return;
+ }
+ if (try_clear_lookup(lookup)) {
+ current_lookup = NULL;
+ start_lookup();
+ }
+}
+
+/*%
+ * Create and queue a new lookup as a followup to the current lookup,
+ * based on the supplied message and section. This is used in trace and
+ * name server search modes to start a new lookup using servers from
+ * NS records in a reply. Returns the number of followup lookups made.
+ */
+static int
+followup_lookup(dns_message_t *msg, dig_query_t *query, dns_section_t section) {
+ dig_lookup_t *lookup = NULL;
+ dig_server_t *srv = NULL;
+ dns_rdataset_t *rdataset = NULL;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ dns_name_t *name = NULL;
+ isc_result_t result;
+ bool success = false;
+ int numLookups = 0;
+ int num;
+ isc_result_t lresult, addresses_result;
+ char bad_namestr[DNS_NAME_FORMATSIZE];
+ dns_name_t *domain;
+ bool horizontal = false, bad = false;
+
+ INSIST(!free_now);
+
+ debug("following up %s", query->lookup->textname);
+
+ addresses_result = ISC_R_SUCCESS;
+ bad_namestr[0] = '\0';
+ for (result = dns_message_firstname(msg, section);
+ result == ISC_R_SUCCESS;
+ result = dns_message_nextname(msg, section))
+ {
+ name = NULL;
+ dns_message_currentname(msg, section, &name);
+
+ if (section == DNS_SECTION_AUTHORITY) {
+ rdataset = NULL;
+ result = dns_message_findtype(name, dns_rdatatype_soa,
+ 0, &rdataset);
+ if (result == ISC_R_SUCCESS) {
+ return (0);
+ }
+ }
+ rdataset = NULL;
+ result = dns_message_findtype(name, dns_rdatatype_ns, 0,
+ &rdataset);
+ if (result != ISC_R_SUCCESS) {
+ continue;
+ }
+
+ debug("found NS set");
+
+ if (query->lookup->trace && !query->lookup->trace_root) {
+ dns_namereln_t namereln;
+ unsigned int nlabels;
+ int order;
+
+ domain = dns_fixedname_name(&query->lookup->fdomain);
+ namereln = dns_name_fullcompare(name, domain, &order,
+ &nlabels);
+ if (namereln == dns_namereln_equal) {
+ if (!horizontal) {
+ dighost_warning("BAD (HORIZONTAL) "
+ "REFERRAL");
+ }
+ horizontal = true;
+ } else if (namereln != dns_namereln_subdomain) {
+ if (!bad) {
+ dighost_warning("BAD REFERRAL");
+ }
+ bad = true;
+ continue;
+ }
+ }
+
+ for (result = dns_rdataset_first(rdataset);
+ result == ISC_R_SUCCESS;
+ result = dns_rdataset_next(rdataset))
+ {
+ char namestr[DNS_NAME_FORMATSIZE];
+ dns_rdata_ns_t ns;
+
+ if (query->lookup->trace_root &&
+ query->lookup->nsfound >= MXSERV)
+ {
+ break;
+ }
+
+ dns_rdataset_current(rdataset, &rdata);
+
+ query->lookup->nsfound++;
+ result = dns_rdata_tostruct(&rdata, &ns, NULL);
+ check_result(result, "dns_rdata_tostruct");
+ dns_name_format(&ns.name, namestr, sizeof(namestr));
+ dns_rdata_freestruct(&ns);
+
+ /* Initialize lookup if we've not yet */
+ debug("found NS %s", namestr);
+ if (!success) {
+ success = true;
+ lookup_counter++;
+ lookup = requeue_lookup(query->lookup, false);
+ cancel_lookup(query->lookup);
+ lookup->doing_xfr = false;
+ if (!lookup->trace_root &&
+ section == DNS_SECTION_ANSWER)
+ {
+ lookup->trace = false;
+ } else {
+ lookup->trace = query->lookup->trace;
+ }
+ lookup->ns_search_only =
+ query->lookup->ns_search_only;
+ lookup->trace_root = false;
+ if (lookup->ns_search_only) {
+ lookup->recurse = false;
+ }
+ domain = dns_fixedname_name(&lookup->fdomain);
+ dns_name_copynf(name, domain);
+ }
+ debug("adding server %s", namestr);
+ num = getaddresses(lookup, namestr, &lresult);
+ if (lresult != ISC_R_SUCCESS) {
+ printf("couldn't get address for '%s': %s\n",
+ namestr, isc_result_totext(lresult));
+ if (addresses_result == ISC_R_SUCCESS) {
+ addresses_result = lresult;
+ strlcpy(bad_namestr, namestr,
+ sizeof(bad_namestr));
+ }
+ }
+ numLookups += num;
+ dns_rdata_reset(&rdata);
+ }
+ }
+ if (numLookups == 0 && addresses_result != ISC_R_SUCCESS) {
+ fatal("couldn't get address for '%s': %s", bad_namestr,
+ isc_result_totext(result));
+ }
+
+ if (lookup == NULL && section == DNS_SECTION_ANSWER &&
+ (query->lookup->trace || query->lookup->ns_search_only))
+ {
+ return (followup_lookup(msg, query, DNS_SECTION_AUTHORITY));
+ }
+
+ /*
+ * Randomize the order the nameserver will be tried.
+ */
+ if (numLookups > 1) {
+ uint32_t i, j;
+ dig_serverlist_t my_server_list;
+ dig_server_t *next;
+
+ ISC_LIST_INIT(my_server_list);
+
+ i = numLookups;
+ for (srv = ISC_LIST_HEAD(lookup->my_server_list); srv != NULL;
+ srv = ISC_LIST_HEAD(lookup->my_server_list))
+ {
+ INSIST(i > 0);
+ j = isc_random_uniform(i);
+ next = ISC_LIST_NEXT(srv, link);
+ while (j-- > 0 && next != NULL) {
+ srv = next;
+ next = ISC_LIST_NEXT(srv, link);
+ }
+ ISC_LIST_DEQUEUE(lookup->my_server_list, srv, link);
+ ISC_LIST_APPEND(my_server_list, srv, link);
+ i--;
+ }
+ ISC_LIST_APPENDLIST(lookup->my_server_list, my_server_list,
+ link);
+ }
+
+ return (numLookups);
+}
+
+/*%
+ * Create and queue a new lookup using the next origin from the search
+ * list, read in setup_system().
+ *
+ * Return true iff there was another searchlist entry.
+ */
+static bool
+next_origin(dig_lookup_t *oldlookup) {
+ dig_lookup_t *newlookup;
+ dig_searchlist_t *search;
+ dns_fixedname_t fixed;
+ dns_name_t *name;
+ isc_result_t result;
+
+ INSIST(!free_now);
+
+ debug("next_origin(%p)", oldlookup);
+ debug("following up %s", oldlookup->textname);
+
+ if (!usesearch) {
+ /*
+ * We're not using a search list, so don't even think
+ * about finding the next entry.
+ */
+ return (false);
+ }
+
+ /*
+ * Check for a absolute name or ndots being met.
+ */
+ name = dns_fixedname_initname(&fixed);
+ result = dns_name_fromstring2(name, oldlookup->textname, NULL, 0, NULL);
+ if (result == ISC_R_SUCCESS &&
+ (dns_name_isabsolute(name) ||
+ (int)dns_name_countlabels(name) > ndots))
+ {
+ return (false);
+ }
+
+ if (oldlookup->origin == NULL && !oldlookup->need_search) {
+ /*
+ * Then we just did rootorg; there's nothing left.
+ */
+ return (false);
+ }
+ if (oldlookup->origin == NULL && oldlookup->need_search) {
+ newlookup = requeue_lookup(oldlookup, true);
+ newlookup->origin = ISC_LIST_HEAD(search_list);
+ newlookup->need_search = false;
+ } else {
+ search = ISC_LIST_NEXT(oldlookup->origin, link);
+ if (search == NULL && oldlookup->done_as_is) {
+ return (false);
+ }
+ newlookup = requeue_lookup(oldlookup, true);
+ newlookup->origin = search;
+ }
+ cancel_lookup(oldlookup);
+ return (true);
+}
+
+/*%
+ * Insert an SOA record into the sendmessage in a lookup. Used for
+ * creating IXFR queries.
+ */
+static void
+insert_soa(dig_lookup_t *lookup) {
+ isc_result_t result;
+ dns_rdata_soa_t soa;
+ dns_rdata_t *rdata = NULL;
+ dns_rdatalist_t *rdatalist = NULL;
+ dns_rdataset_t *rdataset = NULL;
+ dns_name_t *soaname = NULL;
+
+ debug("insert_soa(%p)", lookup);
+ soa.mctx = mctx;
+ soa.serial = lookup->ixfr_serial;
+ soa.refresh = 0;
+ soa.retry = 0;
+ soa.expire = 0;
+ soa.minimum = 0;
+ soa.common.rdclass = lookup->rdclass;
+ soa.common.rdtype = dns_rdatatype_soa;
+
+ dns_name_init(&soa.origin, NULL);
+ dns_name_init(&soa.contact, NULL);
+
+ dns_name_clone(dns_rootname, &soa.origin);
+ dns_name_clone(dns_rootname, &soa.contact);
+
+ isc_buffer_init(&lookup->rdatabuf, lookup->rdatastore,
+ sizeof(lookup->rdatastore));
+
+ result = dns_message_gettemprdata(lookup->sendmsg, &rdata);
+ check_result(result, "dns_message_gettemprdata");
+
+ result = dns_rdata_fromstruct(rdata, lookup->rdclass, dns_rdatatype_soa,
+ &soa, &lookup->rdatabuf);
+ check_result(result, "isc_rdata_fromstruct");
+
+ result = dns_message_gettemprdatalist(lookup->sendmsg, &rdatalist);
+ check_result(result, "dns_message_gettemprdatalist");
+
+ result = dns_message_gettemprdataset(lookup->sendmsg, &rdataset);
+ check_result(result, "dns_message_gettemprdataset");
+
+ dns_rdatalist_init(rdatalist);
+ rdatalist->type = dns_rdatatype_soa;
+ rdatalist->rdclass = lookup->rdclass;
+ ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
+
+ dns_rdatalist_tordataset(rdatalist, rdataset);
+
+ result = dns_message_gettempname(lookup->sendmsg, &soaname);
+ check_result(result, "dns_message_gettempname");
+ dns_name_clone(lookup->name, soaname);
+ ISC_LIST_INIT(soaname->list);
+ ISC_LIST_APPEND(soaname->list, rdataset, link);
+ dns_message_addname(lookup->sendmsg, soaname, DNS_SECTION_AUTHORITY);
+}
+
+static void
+compute_cookie(unsigned char *clientcookie, size_t len) {
+ /* XXXMPA need to fix, should be per server. */
+ INSIST(len >= 8U);
+ memmove(clientcookie, cookie_secret, 8);
+}
+
+/*%
+ * Setup the supplied lookup structure, making it ready to start sending
+ * queries to servers. Create and initialize the message to be sent as
+ * well as the query structures and buffer space for the replies. If the
+ * server list is empty, clone it from the system default list.
+ */
+bool
+setup_lookup(dig_lookup_t *lookup) {
+ isc_result_t result;
+ unsigned int len;
+ dig_server_t *serv;
+ dig_query_t *query;
+ isc_buffer_t b;
+ dns_compress_t cctx;
+ char store[MXNAME];
+ char ecsbuf[20];
+ char cookiebuf[256];
+ char *origin = NULL;
+ char *textname = NULL;
+
+ REQUIRE(lookup != NULL);
+
+#ifdef HAVE_LIBIDN2
+ char idn_origin[MXNAME], idn_textname[MXNAME];
+
+ result = dns_name_settotextfilter(lookup->idnout ? idn_output_filter
+ : NULL);
+ check_result(result, "dns_name_settotextfilter");
+#endif /* HAVE_LIBIDN2 */
+
+ INSIST(!free_now);
+
+ debug("setup_lookup(%p)", lookup);
+
+ dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER, &lookup->sendmsg);
+
+ if (lookup->new_search) {
+ debug("resetting lookup counter.");
+ lookup_counter = 0;
+ }
+
+ if (ISC_LIST_EMPTY(lookup->my_server_list)) {
+ debug("cloning server list");
+ clone_server_list(server_list, &lookup->my_server_list);
+ }
+ result = dns_message_gettempname(lookup->sendmsg, &lookup->name);
+ check_result(result, "dns_message_gettempname");
+
+ isc_buffer_init(&lookup->namebuf, lookup->name_space,
+ sizeof(lookup->name_space));
+ isc_buffer_init(&lookup->onamebuf, lookup->oname_space,
+ sizeof(lookup->oname_space));
+
+ /*
+ * We cannot convert `textname' and `origin' separately.
+ * `textname' doesn't contain TLD, but local mapping needs
+ * TLD.
+ */
+ textname = lookup->textname;
+#ifdef HAVE_LIBIDN2
+ if (lookup->idnin) {
+ idn_locale_to_ace(textname, idn_textname, sizeof(idn_textname));
+ debug("idn_textname: %s", idn_textname);
+ textname = idn_textname;
+ }
+#endif /* HAVE_LIBIDN2 */
+
+ /*
+ * If the name has too many dots, force the origin to be NULL
+ * (which produces an absolute lookup). Otherwise, take the origin
+ * we have if there's one in the struct already. If it's NULL,
+ * take the first entry in the searchlist iff either usesearch
+ * is TRUE or we got a domain line in the resolv.conf file.
+ */
+ if (lookup->new_search) {
+ if ((count_dots(textname) >= ndots) || !usesearch) {
+ lookup->origin = NULL; /* Force abs lookup */
+ lookup->done_as_is = true;
+ lookup->need_search = usesearch;
+ } else if (lookup->origin == NULL && usesearch) {
+ lookup->origin = ISC_LIST_HEAD(search_list);
+ lookup->need_search = false;
+ }
+ }
+
+ if (lookup->origin != NULL) {
+ debug("trying origin %s", lookup->origin->origin);
+ result = dns_message_gettempname(lookup->sendmsg,
+ &lookup->oname);
+ check_result(result, "dns_message_gettempname");
+ /* XXX Helper funct to conv char* to name? */
+ origin = lookup->origin->origin;
+#ifdef HAVE_LIBIDN2
+ if (lookup->idnin) {
+ idn_locale_to_ace(origin, idn_origin,
+ sizeof(idn_origin));
+ debug("trying idn origin %s", idn_origin);
+ origin = idn_origin;
+ }
+#endif /* HAVE_LIBIDN2 */
+ len = (unsigned int)strlen(origin);
+ isc_buffer_init(&b, origin, len);
+ isc_buffer_add(&b, len);
+ result = dns_name_fromtext(lookup->oname, &b, dns_rootname, 0,
+ &lookup->onamebuf);
+ if (result != ISC_R_SUCCESS) {
+ dns_message_puttempname(lookup->sendmsg, &lookup->name);
+ dns_message_puttempname(lookup->sendmsg,
+ &lookup->oname);
+ fatal("'%s' is not in legal name syntax (%s)", origin,
+ isc_result_totext(result));
+ }
+ if (lookup->trace && lookup->trace_root) {
+ dns_name_clone(dns_rootname, lookup->name);
+ } else {
+ dns_fixedname_t fixed;
+ dns_name_t *name;
+
+ name = dns_fixedname_initname(&fixed);
+ len = (unsigned int)strlen(textname);
+ isc_buffer_init(&b, textname, len);
+ isc_buffer_add(&b, len);
+ result = dns_name_fromtext(name, &b, NULL, 0, NULL);
+ if (result == ISC_R_SUCCESS) {
+ if (!dns_name_isabsolute(name)) {
+ result = dns_name_concatenate(
+ name, lookup->oname,
+ lookup->name, &lookup->namebuf);
+ } else {
+ result = dns_name_copy(
+ name, lookup->name,
+ &lookup->namebuf);
+ }
+ }
+ if (result != ISC_R_SUCCESS) {
+ dns_message_puttempname(lookup->sendmsg,
+ &lookup->name);
+ dns_message_puttempname(lookup->sendmsg,
+ &lookup->oname);
+ if (result == DNS_R_NAMETOOLONG) {
+ return (false);
+ }
+ fatal("'%s' is not in legal name syntax (%s)",
+ lookup->textname,
+ isc_result_totext(result));
+ }
+ }
+ dns_message_puttempname(lookup->sendmsg, &lookup->oname);
+ } else {
+ debug("using root origin");
+ if (lookup->trace && lookup->trace_root) {
+ dns_name_clone(dns_rootname, lookup->name);
+ } else {
+ len = (unsigned int)strlen(textname);
+ isc_buffer_init(&b, textname, len);
+ isc_buffer_add(&b, len);
+ result = dns_name_fromtext(lookup->name, &b,
+ dns_rootname, 0,
+ &lookup->namebuf);
+ }
+ if (result != ISC_R_SUCCESS) {
+ dns_message_puttempname(lookup->sendmsg, &lookup->name);
+ warn("'%s' is not a legal name "
+ "(%s)",
+ lookup->textname, isc_result_totext(result));
+#if TARGET_OS_IPHONE
+ check_next_lookup(current_lookup);
+ return (false);
+#else /* if TARGET_OS_IPHONE */
+ digexit();
+#endif /* if TARGET_OS_IPHONE */
+ }
+ }
+ dns_name_format(lookup->name, store, sizeof(store));
+ dighost_trying(store, lookup);
+ INSIST(dns_name_isabsolute(lookup->name));
+
+ lookup->sendmsg->id = (dns_messageid_t)isc_random16();
+ lookup->sendmsg->opcode = lookup->opcode;
+ lookup->msgcounter = 0;
+
+ /*
+ * If this is a trace request, completely disallow recursion after
+ * looking up the root name servers, since it's meaningless for traces.
+ */
+ if ((lookup->trace || lookup->ns_search_only) && !lookup->trace_root) {
+ lookup->recurse = false;
+ }
+
+ if (lookup->recurse && lookup->rdtype != dns_rdatatype_axfr &&
+ lookup->rdtype != dns_rdatatype_ixfr)
+ {
+ debug("recursive query");
+ lookup->sendmsg->flags |= DNS_MESSAGEFLAG_RD;
+ }
+
+ /* XXX aaflag */
+ if (lookup->aaonly) {
+ debug("AA query");
+ lookup->sendmsg->flags |= DNS_MESSAGEFLAG_AA;
+ }
+
+ if (lookup->adflag) {
+ debug("AD query");
+ lookup->sendmsg->flags |= DNS_MESSAGEFLAG_AD;
+ }
+
+ if (lookup->cdflag) {
+ debug("CD query");
+ lookup->sendmsg->flags |= DNS_MESSAGEFLAG_CD;
+ }
+
+ if (lookup->raflag) {
+ debug("RA query");
+ lookup->sendmsg->flags |= DNS_MESSAGEFLAG_RA;
+ }
+
+ if (lookup->tcflag) {
+ debug("TC query");
+ lookup->sendmsg->flags |= DNS_MESSAGEFLAG_TC;
+ }
+
+ if (lookup->zflag) {
+ debug("Z query");
+ lookup->sendmsg->flags |= 0x0040U;
+ }
+
+ dns_message_addname(lookup->sendmsg, lookup->name,
+ DNS_SECTION_QUESTION);
+
+ if (lookup->trace && lookup->trace_root) {
+ lookup->qrdtype = lookup->rdtype;
+ lookup->rdtype = dns_rdatatype_ns;
+ }
+
+ if ((lookup->rdtype == dns_rdatatype_axfr) ||
+ (lookup->rdtype == dns_rdatatype_ixfr))
+ {
+ /*
+ * Force TCP mode if we're doing an axfr.
+ */
+ if (lookup->rdtype == dns_rdatatype_axfr) {
+ lookup->doing_xfr = true;
+ lookup->tcp_mode = true;
+ } else if (lookup->tcp_mode) {
+ lookup->doing_xfr = true;
+ }
+ }
+
+ if (!lookup->header_only) {
+ add_question(lookup->sendmsg, lookup->name, lookup->rdclass,
+ lookup->rdtype);
+ }
+
+ /* add_soa */
+ if (lookup->rdtype == dns_rdatatype_ixfr) {
+ insert_soa(lookup);
+ }
+
+ /* XXX Insist this? */
+ lookup->tsigctx = NULL;
+ lookup->querysig = NULL;
+ if (tsigkey != NULL) {
+ debug("initializing keys");
+ result = dns_message_settsigkey(lookup->sendmsg, tsigkey);
+ check_result(result, "dns_message_settsigkey");
+ }
+
+ lookup->sendspace = isc_mem_get(mctx, COMMSIZE);
+
+ result = dns_compress_init(&cctx, -1, mctx);
+ check_result(result, "dns_compress_init");
+
+ debug("starting to render the message");
+ isc_buffer_init(&lookup->renderbuf, lookup->sendspace, COMMSIZE);
+ result = dns_message_renderbegin(lookup->sendmsg, &cctx,
+ &lookup->renderbuf);
+ check_result(result, "dns_message_renderbegin");
+ if (lookup->udpsize > 0 || lookup->dnssec || lookup->edns > -1 ||
+ lookup->ecs_addr != NULL)
+ {
+#define MAXOPTS (EDNSOPT_OPTIONS + DNS_EDNSOPTIONS)
+ dns_ednsopt_t opts[MAXOPTS];
+ unsigned int flags;
+ unsigned int i = 0;
+
+ /*
+ * There can't be more than MAXOPTS options to send:
+ * a maximum of EDNSOPT_OPTIONS set by +ednsopt
+ * and DNS_EDNSOPTIONS set by other arguments
+ * (+nsid, +cookie, etc).
+ */
+ if (lookup->udpsize < 0) {
+ lookup->udpsize = DEFAULT_EDNS_BUFSIZE;
+ }
+ if (lookup->edns < 0) {
+ lookup->edns = DEFAULT_EDNS_VERSION;
+ }
+
+ if (lookup->nsid) {
+ INSIST(i < MAXOPTS);
+ opts[i].code = DNS_OPT_NSID;
+ opts[i].length = 0;
+ opts[i].value = NULL;
+ i++;
+ }
+
+ if (lookup->ecs_addr != NULL) {
+ uint8_t addr[16];
+ uint16_t family = 0;
+ uint32_t plen;
+ struct sockaddr *sa;
+ struct sockaddr_in *sin;
+ struct sockaddr_in6 *sin6;
+ size_t addrl;
+
+ sa = &lookup->ecs_addr->type.sa;
+ plen = lookup->ecs_addr->length;
+
+ /* Round up prefix len to a multiple of 8 */
+ addrl = (plen + 7) / 8;
+
+ INSIST(i < MAXOPTS);
+ opts[i].code = DNS_OPT_CLIENT_SUBNET;
+ opts[i].length = (uint16_t)addrl + 4;
+ check_result(result, "isc_buffer_allocate");
+
+ /*
+ * XXXMUKS: According to RFC7871, "If there is
+ * no ADDRESS set, i.e., SOURCE PREFIX-LENGTH is
+ * set to 0, then FAMILY SHOULD be set to the
+ * transport over which the query is sent."
+ *
+ * However, at this point we don't know what
+ * transport(s) we'll be using, so we can't
+ * set the value now. For now, we're using
+ * IPv4 as the default the +subnet option
+ * used an IPv4 prefix, or for +subnet=0,
+ * and IPv6 if the +subnet option used an
+ * IPv6 prefix.
+ *
+ * (For future work: preserve the offset into
+ * the buffer where the family field is;
+ * that way we can update it in send_udp()
+ * or send_tcp_connect() once we know
+ * what it outght to be.)
+ */
+ switch (sa->sa_family) {
+ case AF_UNSPEC:
+ INSIST(plen == 0);
+ family = 1;
+ break;
+ case AF_INET:
+ INSIST(plen <= 32);
+ family = 1;
+ sin = (struct sockaddr_in *)sa;
+ memmove(addr, &sin->sin_addr, addrl);
+ break;
+ case AF_INET6:
+ INSIST(plen <= 128);
+ family = 2;
+ sin6 = (struct sockaddr_in6 *)sa;
+ memmove(addr, &sin6->sin6_addr, addrl);
+ break;
+ default:
+ UNREACHABLE();
+ }
+
+ isc_buffer_init(&b, ecsbuf, sizeof(ecsbuf));
+ /* family */
+ isc_buffer_putuint16(&b, family);
+ /* source prefix-length */
+ isc_buffer_putuint8(&b, plen);
+ /* scope prefix-length */
+ isc_buffer_putuint8(&b, 0);
+
+ /* address */
+ if (addrl > 0) {
+ /* Mask off last address byte */
+ if ((plen % 8) != 0) {
+ addr[addrl - 1] &= ~0U
+ << (8 - (plen % 8));
+ }
+ isc_buffer_putmem(&b, addr, (unsigned)addrl);
+ }
+
+ opts[i].value = (uint8_t *)ecsbuf;
+ i++;
+ }
+
+ if (lookup->sendcookie) {
+ INSIST(i < MAXOPTS);
+ opts[i].code = DNS_OPT_COOKIE;
+ if (lookup->cookie != NULL) {
+ isc_buffer_init(&b, cookiebuf,
+ sizeof(cookiebuf));
+ result = isc_hex_decodestring(lookup->cookie,
+ &b);
+ check_result(result, "isc_hex_decodestring");
+ opts[i].value = isc_buffer_base(&b);
+ opts[i].length = isc_buffer_usedlength(&b);
+ } else {
+ compute_cookie(cookie, sizeof(cookie));
+ opts[i].length = 8;
+ opts[i].value = cookie;
+ }
+ i++;
+ }
+
+ if (lookup->expire) {
+ INSIST(i < MAXOPTS);
+ opts[i].code = DNS_OPT_EXPIRE;
+ opts[i].length = 0;
+ opts[i].value = NULL;
+ i++;
+ }
+
+ if (lookup->tcp_keepalive) {
+ INSIST(i < MAXOPTS);
+ opts[i].code = DNS_OPT_TCP_KEEPALIVE;
+ opts[i].length = 0;
+ opts[i].value = NULL;
+ i++;
+ }
+
+ if (lookup->ednsoptscnt != 0) {
+ INSIST(i + lookup->ednsoptscnt <= MAXOPTS);
+ memmove(&opts[i], lookup->ednsopts,
+ sizeof(dns_ednsopt_t) * lookup->ednsoptscnt);
+ i += lookup->ednsoptscnt;
+ }
+
+ if (lookup->padding != 0 && (i >= MAXOPTS)) {
+ debug("turned off padding because of EDNS overflow");
+ lookup->padding = 0;
+ }
+
+ if (lookup->padding != 0) {
+ INSIST(i < MAXOPTS);
+ opts[i].code = DNS_OPT_PAD;
+ opts[i].length = 0;
+ opts[i].value = NULL;
+ i++;
+ dns_message_setpadding(lookup->sendmsg,
+ lookup->padding);
+ }
+
+ flags = lookup->ednsflags;
+ flags &= ~DNS_MESSAGEEXTFLAG_DO;
+ if (lookup->dnssec) {
+ flags |= DNS_MESSAGEEXTFLAG_DO;
+ }
+ add_opt(lookup->sendmsg, lookup->udpsize, lookup->edns, flags,
+ opts, i);
+ }
+
+ result = dns_message_rendersection(lookup->sendmsg,
+ DNS_SECTION_QUESTION, 0);
+ check_result(result, "dns_message_rendersection");
+ result = dns_message_rendersection(lookup->sendmsg,
+ DNS_SECTION_AUTHORITY, 0);
+ check_result(result, "dns_message_rendersection");
+ result = dns_message_renderend(lookup->sendmsg);
+ check_result(result, "dns_message_renderend");
+ debug("done rendering");
+
+ dns_compress_invalidate(&cctx);
+
+ /*
+ * Force TCP mode if the request is larger than 512 bytes.
+ */
+ if (isc_buffer_usedlength(&lookup->renderbuf) > 512) {
+ lookup->tcp_mode = true;
+ }
+
+ lookup->pending = false;
+
+ for (serv = ISC_LIST_HEAD(lookup->my_server_list); serv != NULL;
+ serv = ISC_LIST_NEXT(serv, link))
+ {
+ query = isc_mem_allocate(mctx, sizeof(dig_query_t));
+ debug("create query %p linked to lookup %p", query, lookup);
+ query->lookup = lookup;
+ query->timer = NULL;
+ query->waiting_connect = false;
+ query->waiting_senddone = false;
+ query->pending_free = false;
+ query->recv_made = false;
+ query->first_pass = true;
+ query->first_soa_rcvd = false;
+ query->second_rr_rcvd = false;
+ query->first_repeat_rcvd = false;
+ query->warn_id = true;
+ query->timedout = false;
+ query->first_rr_serial = 0;
+ query->second_rr_serial = 0;
+ query->servname = serv->servername;
+ query->userarg = serv->userarg;
+ query->rr_count = 0;
+ query->msg_count = 0;
+ query->byte_count = 0;
+ query->ixfr_axfr = false;
+ query->sock = NULL;
+ query->recvspace = isc_mem_get(mctx, COMMSIZE);
+ query->tmpsendspace = isc_mem_get(mctx, COMMSIZE);
+ if (query->recvspace == NULL) {
+ fatal("memory allocation failure");
+ }
+
+ isc_buffer_init(&query->recvbuf, query->recvspace, COMMSIZE);
+ isc_buffer_init(&query->lengthbuf, query->lengthspace, 2);
+ isc_buffer_init(&query->tmpsendbuf, query->tmpsendspace,
+ COMMSIZE);
+ query->sendbuf = lookup->renderbuf;
+
+ isc_time_settoepoch(&query->time_sent);
+ isc_time_settoepoch(&query->time_recv);
+
+ ISC_LINK_INIT(query, clink);
+ ISC_LINK_INIT(query, link);
+ query->saved_next = NULL;
+
+ query->magic = DIG_QUERY_MAGIC;
+
+ ISC_LIST_ENQUEUE(lookup->q, query, link);
+ }
+
+ return (true);
+}
+
+/*%
+ * Event handler for send completion. Track send counter, and clear out
+ * the query if the send was canceled.
+ */
+static void
+send_done(isc_task_t *_task, isc_event_t *event) {
+ dig_query_t *query, *next;
+ dig_lookup_t *l;
+
+ REQUIRE(event->ev_type == ISC_SOCKEVENT_SENDDONE);
+
+ UNUSED(_task);
+
+ LOCK_LOOKUP;
+
+ debug("send_done(%p)", event->ev_arg);
+ sendcount--;
+ debug("sendcount=%d", sendcount);
+ INSIST(sendcount >= 0);
+
+ query = event->ev_arg;
+ REQUIRE(DIG_VALID_QUERY(query));
+ query->waiting_senddone = false;
+ l = query->lookup;
+
+ if (l == current_lookup && l->ns_search_only && !l->trace_root &&
+ !l->tcp_mode)
+ {
+ debug("sending next, since searching");
+ next = query->pending_free ? query->saved_next
+ : ISC_LIST_NEXT(query, link);
+ if (next != NULL) {
+ send_udp(next);
+ }
+ }
+
+ isc_event_free(&event);
+
+ if (query->pending_free) {
+ query->magic = 0;
+ isc_mem_free(mctx, query);
+ }
+
+ check_if_done();
+ UNLOCK_LOOKUP;
+}
+
+/*%
+ * Cancel a lookup, sending isc_socket_cancel() requests to all outstanding
+ * IO sockets. The cancel handlers should take care of cleaning up the
+ * query and lookup structures
+ */
+static void
+cancel_lookup(dig_lookup_t *lookup) {
+ dig_query_t *query, *next;
+
+ debug("cancel_lookup(%p)", lookup);
+ query = ISC_LIST_HEAD(lookup->q);
+ while (query != NULL) {
+ REQUIRE(DIG_VALID_QUERY(query));
+ next = ISC_LIST_NEXT(query, link);
+ if (query->sock != NULL) {
+ isc_socket_cancel(query->sock, global_task,
+ ISC_SOCKCANCEL_ALL);
+ check_if_done();
+ } else {
+ clear_query(query);
+ }
+ query = next;
+ }
+ lookup->pending = false;
+ lookup->retries = 0;
+}
+
+static void
+bringup_timer(dig_query_t *query, unsigned int default_timeout) {
+ dig_lookup_t *l;
+ unsigned int local_timeout;
+ isc_result_t result;
+ REQUIRE(DIG_VALID_QUERY(query));
+
+ debug("bringup_timer(%p)", query);
+ /*
+ * If the timer already exists, that means we're calling this
+ * a second time (for a retry). Don't need to recreate it,
+ * just reset it.
+ */
+ l = query->lookup;
+ if (ISC_LINK_LINKED(query, link) && ISC_LIST_NEXT(query, link) != NULL)
+ {
+ local_timeout = SERVER_TIMEOUT;
+ } else {
+ if (timeout == 0) {
+ local_timeout = default_timeout;
+ } else {
+ local_timeout = timeout;
+ }
+ }
+ debug("have local timeout of %d", local_timeout);
+ isc_interval_set(&l->interval, local_timeout, 0);
+ if (query->timer != NULL) {
+ isc_timer_destroy(&query->timer);
+ }
+ result = isc_timer_create(timermgr, isc_timertype_once, NULL,
+ &l->interval, global_task, connect_timeout,
+ query, &query->timer);
+ check_result(result, "isc_timer_create");
+}
+
+static void
+force_timeout(dig_query_t *query) {
+ isc_event_t *event;
+
+ debug("force_timeout(%p)", query);
+ event = isc_event_allocate(mctx, query, ISC_TIMEREVENT_IDLE,
+ connect_timeout, query, sizeof(isc_event_t));
+ isc_task_send(global_task, &event);
+
+ /*
+ * The timer may have expired if, for example, get_address() takes
+ * long time and the timer was running on a different thread.
+ * We need to cancel the possible timeout event not to confuse
+ * ourselves due to the duplicate events.
+ */
+ if (query->timer != NULL) {
+ isc_timer_destroy(&query->timer);
+ }
+}
+
+static void
+connect_done(isc_task_t *task, isc_event_t *event);
+
+/*%
+ * Unlike send_udp, this can't be called multiple times with the same
+ * query. When we retry TCP, we requeue the whole lookup, which should
+ * start anew.
+ */
+static void
+send_tcp_connect(dig_query_t *query) {
+ isc_result_t result;
+ dig_query_t *next;
+ dig_lookup_t *l;
+ REQUIRE(DIG_VALID_QUERY(query));
+
+ debug("send_tcp_connect(%p)", query);
+
+ l = query->lookup;
+ query->waiting_connect = true;
+ query->lookup->current_query = query;
+ result = get_address(query->servname, port, &query->sockaddr);
+ if (result != ISC_R_SUCCESS) {
+ /*
+ * This servname doesn't have an address. Try the next server
+ * by triggering an immediate 'timeout' (we lie, but the effect
+ * is the same).
+ */
+ force_timeout(query);
+ return;
+ }
+
+ if (!l->mapped && isc_sockaddr_pf(&query->sockaddr) == AF_INET6 &&
+ IN6_IS_ADDR_V4MAPPED(&query->sockaddr.type.sin6.sin6_addr))
+ {
+ isc_netaddr_t netaddr;
+ char buf[ISC_NETADDR_FORMATSIZE];
+
+ isc_netaddr_fromsockaddr(&netaddr, &query->sockaddr);
+ isc_netaddr_format(&netaddr, buf, sizeof(buf));
+ dighost_warning("Skipping mapped address '%s'", buf);
+
+ query->waiting_connect = false;
+ if (ISC_LINK_LINKED(query, link)) {
+ next = ISC_LIST_NEXT(query, link);
+ } else {
+ next = NULL;
+ }
+ l = query->lookup;
+ clear_query(query);
+ if (next == NULL) {
+ dighost_warning("No acceptable nameservers");
+ check_next_lookup(l);
+ return;
+ }
+ send_tcp_connect(next);
+ return;
+ }
+
+ INSIST(query->sock == NULL);
+
+ if (keep != NULL && isc_sockaddr_equal(&keepaddr, &query->sockaddr)) {
+ sockcount++;
+ isc_socket_attach(keep, &query->sock);
+ query->waiting_connect = false;
+ launch_next_query(query, true);
+ goto search;
+ }
+
+ result = isc_socket_create(socketmgr, isc_sockaddr_pf(&query->sockaddr),
+ isc_sockettype_tcp, &query->sock);
+ check_result(result, "isc_socket_create");
+ sockcount++;
+ debug("sockcount=%d", sockcount);
+ if (query->lookup->dscp != -1) {
+ isc_socket_dscp(query->sock, query->lookup->dscp);
+ }
+ isc_socket_ipv6only(query->sock, !query->lookup->mapped);
+ if (specified_source) {
+ result = isc_socket_bind(query->sock, &bind_address,
+ ISC_SOCKET_REUSEADDRESS);
+ } else {
+ if ((isc_sockaddr_pf(&query->sockaddr) == AF_INET) && have_ipv4)
+ {
+ isc_sockaddr_any(&bind_any);
+ } else {
+ isc_sockaddr_any6(&bind_any);
+ }
+ result = isc_socket_bind(query->sock, &bind_any, 0);
+ }
+ check_result(result, "isc_socket_bind");
+ bringup_timer(query, TCP_TIMEOUT);
+ result = isc_socket_connect(query->sock, &query->sockaddr, global_task,
+ connect_done, query);
+ check_result(result, "isc_socket_connect");
+search:
+ /*
+ * If we're at the endgame of a nameserver search, we need to
+ * immediately bring up all the queries. Do it here.
+ */
+ if (l->ns_search_only && !l->trace_root) {
+ debug("sending next, since searching");
+ if (ISC_LINK_LINKED(query, link)) {
+ next = ISC_LIST_NEXT(query, link);
+ ISC_LIST_DEQUEUE(l->q, query, link);
+ } else {
+ next = NULL;
+ }
+ ISC_LIST_ENQUEUE(l->connecting, query, clink);
+ if (next != NULL) {
+ send_tcp_connect(next);
+ }
+ }
+}
+
+static void
+print_query_size(dig_query_t *query) {
+ if (!yaml) {
+ printf(";; QUERY SIZE: %u\n\n",
+ isc_buffer_usedlength(&query->lookup->renderbuf));
+ }
+}
+
+/*%
+ * Send a UDP packet to the remote nameserver, possible starting the
+ * recv action as well. Also make sure that the timer is running and
+ * is properly reset.
+ */
+static void
+send_udp(dig_query_t *query) {
+ dig_lookup_t *l = NULL;
+ isc_result_t result;
+ dig_query_t *next;
+ isc_region_t r;
+ isc_socketevent_t *sevent;
+ REQUIRE(DIG_VALID_QUERY(query));
+
+ debug("send_udp(%p)", query);
+
+ l = query->lookup;
+ bringup_timer(query, UDP_TIMEOUT);
+ l->current_query = query;
+ debug("working on lookup %p, query %p", query->lookup, query);
+ if (!query->recv_made) {
+ /* XXX Check the sense of this, need assertion? */
+ query->waiting_connect = false;
+ result = get_address(query->servname, port, &query->sockaddr);
+ if (result != ISC_R_SUCCESS) {
+ /* This servname doesn't have an address. */
+ force_timeout(query);
+ return;
+ }
+
+ if (!l->mapped &&
+ isc_sockaddr_pf(&query->sockaddr) == AF_INET6 &&
+ IN6_IS_ADDR_V4MAPPED(&query->sockaddr.type.sin6.sin6_addr))
+ {
+ isc_netaddr_t netaddr;
+ char buf[ISC_NETADDR_FORMATSIZE];
+
+ isc_netaddr_fromsockaddr(&netaddr, &query->sockaddr);
+ isc_netaddr_format(&netaddr, buf, sizeof(buf));
+ dighost_warning("Skipping mapped address '%s'", buf);
+ next = ISC_LIST_NEXT(query, link);
+ l = query->lookup;
+ clear_query(query);
+ if (next == NULL) {
+ dighost_warning("No acceptable nameservers");
+ check_next_lookup(l);
+ } else {
+ send_udp(next);
+ }
+ return;
+ }
+
+ result = isc_socket_create(socketmgr,
+ isc_sockaddr_pf(&query->sockaddr),
+ isc_sockettype_udp, &query->sock);
+ check_result(result, "isc_socket_create");
+ sockcount++;
+ debug("sockcount=%d", sockcount);
+ if (query->lookup->dscp != -1) {
+ isc_socket_dscp(query->sock, query->lookup->dscp);
+ }
+ isc_socket_ipv6only(query->sock, !query->lookup->mapped);
+ if (specified_source) {
+ result = isc_socket_bind(query->sock, &bind_address,
+ ISC_SOCKET_REUSEADDRESS);
+ } else {
+ isc_sockaddr_anyofpf(&bind_any,
+ isc_sockaddr_pf(&query->sockaddr));
+ result = isc_socket_bind(query->sock, &bind_any, 0);
+ }
+ check_result(result, "isc_socket_bind");
+
+ query->recv_made = true;
+ isc_buffer_availableregion(&query->recvbuf, &r);
+ debug("recving with lookup=%p, query=%p, sock=%p",
+ query->lookup, query, query->sock);
+ result = isc_socket_recv(query->sock, &r, 1, global_task,
+ recv_done, query);
+ check_result(result, "isc_socket_recv");
+ recvcount++;
+ debug("recvcount=%d", recvcount);
+ }
+ isc_buffer_usedregion(&query->sendbuf, &r);
+ debug("sending a request");
+ if (query->lookup->use_usec) {
+ TIME_NOW_HIRES(&query->time_sent);
+ } else {
+ TIME_NOW(&query->time_sent);
+ }
+ INSIST(query->sock != NULL);
+ query->waiting_senddone = true;
+ sevent = isc_socket_socketevent(
+ mctx, query->sock, ISC_SOCKEVENT_SENDDONE, send_done, query);
+ result = isc_socket_sendto2(query->sock, &r, global_task,
+ &query->sockaddr, NULL, sevent,
+ ISC_SOCKFLAG_NORETRY);
+ check_result(result, "isc_socket_sendto2");
+ sendcount++;
+
+ /* XXX qrflag, print_query, etc... */
+ if (!ISC_LIST_EMPTY(query->lookup->q) && query->lookup->qr) {
+ extrabytes = 0;
+ dighost_printmessage(ISC_LIST_HEAD(query->lookup->q),
+ &query->lookup->renderbuf,
+ query->lookup->sendmsg, true);
+ if (query->lookup->stats) {
+ print_query_size(query);
+ }
+ }
+}
+
+/*%
+ * If there are more servers available for querying within 'lookup', initiate a
+ * TCP or UDP query to the next available server and return true; otherwise,
+ * return false.
+ */
+static bool
+try_next_server(dig_lookup_t *lookup) {
+ dig_query_t *current_query, *next_query;
+
+ current_query = lookup->current_query;
+ if (current_query == NULL || !ISC_LINK_LINKED(current_query, link)) {
+ return (false);
+ }
+
+ next_query = ISC_LIST_NEXT(current_query, link);
+ if (next_query == NULL) {
+ return (false);
+ }
+
+ debug("trying next server...");
+
+ if (lookup->tcp_mode) {
+ send_tcp_connect(next_query);
+ } else {
+ send_udp(next_query);
+ }
+
+ return (true);
+}
+
+/*%
+ * IO timeout handler, used for both connect and recv timeouts. If
+ * retries are still allowed, either resend the UDP packet or queue a
+ * new TCP lookup. Otherwise, cancel the lookup.
+ */
+static void
+connect_timeout(isc_task_t *task, isc_event_t *event) {
+ dig_lookup_t *l = NULL;
+ dig_query_t *query = NULL;
+
+ UNUSED(task);
+ REQUIRE(event->ev_type == ISC_TIMEREVENT_IDLE);
+
+ debug("connect_timeout(%p)", event->ev_arg);
+
+ LOCK_LOOKUP;
+ query = event->ev_arg;
+ REQUIRE(DIG_VALID_QUERY(query));
+ l = query->lookup;
+ isc_event_free(&event);
+
+ INSIST(!free_now);
+
+ if (cancel_now) {
+ UNLOCK_LOOKUP;
+ return;
+ }
+
+ if (try_next_server(l)) {
+ if (l->tcp_mode) {
+ if (query->sock != NULL) {
+ isc_socket_cancel(query->sock, NULL,
+ ISC_SOCKCANCEL_ALL);
+ } else {
+ clear_query(query);
+ }
+ }
+ UNLOCK_LOOKUP;
+ return;
+ }
+
+ if (l->tcp_mode && query->sock != NULL) {
+ query->timedout = true;
+ isc_socket_cancel(query->sock, NULL, ISC_SOCKCANCEL_ALL);
+ }
+
+ if (l->retries > 1) {
+ if (!l->tcp_mode) {
+ l->retries--;
+ debug("resending UDP request to first server");
+ send_udp(ISC_LIST_HEAD(l->q));
+ } else {
+ debug("making new TCP request, %d tries left",
+ l->retries);
+ l->retries--;
+ requeue_lookup(l, true);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ }
+ } else {
+ if (l->ns_search_only) {
+ isc_netaddr_t netaddr;
+ char buf[ISC_NETADDR_FORMATSIZE];
+
+ isc_netaddr_fromsockaddr(&netaddr, &query->sockaddr);
+ isc_netaddr_format(&netaddr, buf, sizeof(buf));
+
+ dighost_error("no response from %s\n", buf);
+ } else {
+ fputs(l->cmdline, stdout);
+ dighost_error("connection timed out; "
+ "no servers could be reached\n");
+ }
+ cancel_lookup(l);
+ check_next_lookup(l);
+ if (exitcode < 9) {
+ exitcode = 9;
+ }
+ }
+ UNLOCK_LOOKUP;
+}
+
+/*%
+ * Called when a peer closes a TCP socket prematurely.
+ */
+static void
+requeue_or_update_exitcode(dig_lookup_t *lookup) {
+ if (lookup->eoferr == 0U && lookup->retries > 1) {
+ --lookup->retries;
+ /*
+ * Peer closed the connection prematurely for the first time
+ * for this lookup. Try again, keeping track of this failure.
+ */
+ dig_lookup_t *requeued_lookup = requeue_lookup(lookup, true);
+ requeued_lookup->eoferr++;
+ } else {
+ /*
+ * Peer closed the connection prematurely and it happened
+ * previously for this lookup. Indicate an error.
+ */
+ exitcode = 9;
+ }
+}
+
+/*%
+ * Event handler for the TCP recv which gets the length header of TCP
+ * packets. Start the next recv of length bytes.
+ */
+static void
+tcp_length_done(isc_task_t *task, isc_event_t *event) {
+ isc_socketevent_t *sevent;
+ isc_buffer_t b;
+ isc_region_t r;
+ isc_result_t result;
+ dig_query_t *query = NULL;
+ dig_lookup_t *l;
+ uint16_t length;
+
+ REQUIRE(event->ev_type == ISC_SOCKEVENT_RECVDONE);
+ INSIST(!free_now);
+
+ UNUSED(task);
+
+ debug("tcp_length_done(%p)", event->ev_arg);
+
+ LOCK_LOOKUP;
+ sevent = (isc_socketevent_t *)event;
+ query = event->ev_arg;
+ REQUIRE(DIG_VALID_QUERY(query));
+
+ recvcount--;
+ INSIST(recvcount >= 0);
+
+ if (sevent->result == ISC_R_CANCELED) {
+ isc_event_free(&event);
+ l = query->lookup;
+ clear_query(query);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ if (sevent->result != ISC_R_SUCCESS) {
+ char sockstr[ISC_SOCKADDR_FORMATSIZE];
+ isc_sockaddr_format(&query->sockaddr, sockstr, sizeof(sockstr));
+ dighost_error("communications error to %s: %s\n", sockstr,
+ isc_result_totext(sevent->result));
+ if (keep != NULL) {
+ isc_socket_detach(&keep);
+ }
+ l = query->lookup;
+ isc_socket_detach(&query->sock);
+ sockcount--;
+ debug("sockcount=%d", sockcount);
+ INSIST(sockcount >= 0);
+ if (sevent->result == ISC_R_EOF) {
+ requeue_or_update_exitcode(l);
+ }
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ isc_buffer_init(&b, sevent->region.base, sevent->n);
+ isc_buffer_add(&b, sevent->n);
+ length = isc_buffer_getuint16(&b);
+
+ if (length == 0) {
+ isc_event_free(&event);
+ launch_next_query(query, false);
+ UNLOCK_LOOKUP;
+ return;
+ }
+
+ /*
+ * Even though the buffer was already init'ed, we need
+ * to redo it now, to force the length we want.
+ */
+ isc_buffer_invalidate(&query->recvbuf);
+ isc_buffer_init(&query->recvbuf, query->recvspace, length);
+ isc_buffer_availableregion(&query->recvbuf, &r);
+ debug("recving with lookup=%p, query=%p", query->lookup, query);
+ result = isc_socket_recv(query->sock, &r, length, task, recv_done,
+ query);
+ check_result(result, "isc_socket_recv");
+ recvcount++;
+ debug("resubmitted recv request with length %d, recvcount=%d", length,
+ recvcount);
+ isc_event_free(&event);
+ UNLOCK_LOOKUP;
+}
+
+/*%
+ * For transfers that involve multiple recvs (XFR's in particular),
+ * launch the next recv.
+ */
+static void
+launch_next_query(dig_query_t *query, bool include_question) {
+ isc_result_t result;
+ dig_lookup_t *l;
+ isc_region_t r;
+ REQUIRE(DIG_VALID_QUERY(query));
+
+ INSIST(!free_now);
+
+ debug("launch_next_query(%p)", query);
+
+ if (!query->lookup->pending) {
+ debug("ignoring launch_next_query because !pending");
+ isc_socket_detach(&query->sock);
+ sockcount--;
+ debug("sockcount=%d", sockcount);
+ INSIST(sockcount >= 0);
+ query->waiting_connect = false;
+ l = query->lookup;
+ clear_query(query);
+ check_next_lookup(l);
+ return;
+ }
+
+ isc_buffer_clear(&query->lengthbuf);
+ isc_buffer_availableregion(&query->lengthbuf, &r);
+ result = isc_socket_recv(query->sock, &r, 0, global_task,
+ tcp_length_done, query);
+ check_result(result, "isc_socket_recv");
+ recvcount++;
+ debug("recvcount=%d", recvcount);
+ if (!query->first_soa_rcvd) {
+ debug("sending a request in launch_next_query");
+ if (query->lookup->use_usec) {
+ TIME_NOW_HIRES(&query->time_sent);
+ } else {
+ TIME_NOW(&query->time_sent);
+ }
+ query->waiting_senddone = true;
+ isc_buffer_clear(&query->tmpsendbuf);
+ isc_buffer_putuint16(&query->tmpsendbuf,
+ isc_buffer_usedlength(&query->sendbuf));
+ if (include_question) {
+ isc_buffer_usedregion(&query->sendbuf, &r);
+ isc_buffer_copyregion(&query->tmpsendbuf, &r);
+ }
+ isc_buffer_usedregion(&query->tmpsendbuf, &r);
+ result = isc_socket_send(query->sock, &r, global_task,
+ send_done, query);
+ check_result(result, "isc_socket_send");
+ sendcount++;
+ debug("sendcount=%d", sendcount);
+
+ /* XXX qrflag, print_query, etc... */
+ if (!ISC_LIST_EMPTY(query->lookup->q) && query->lookup->qr) {
+ extrabytes = 0;
+ dighost_printmessage(ISC_LIST_HEAD(query->lookup->q),
+ &query->lookup->renderbuf,
+ query->lookup->sendmsg, true);
+ if (query->lookup->stats) {
+ print_query_size(query);
+ }
+ }
+ }
+ query->waiting_connect = false;
+#if 0
+ check_next_lookup(query->lookup);
+#endif /* if 0 */
+ return;
+}
+
+/*%
+ * Event handler for TCP connect complete. Make sure the connection was
+ * successful, then pass into launch_next_query to actually send the
+ * question.
+ */
+static void
+connect_done(isc_task_t *task, isc_event_t *event) {
+ char sockstr[ISC_SOCKADDR_FORMATSIZE];
+ isc_socketevent_t *sevent = NULL;
+ dig_query_t *query = NULL, *next;
+ dig_lookup_t *l;
+
+ UNUSED(task);
+
+ REQUIRE(event->ev_type == ISC_SOCKEVENT_CONNECT);
+ INSIST(!free_now);
+
+ debug("connect_done(%p)", event->ev_arg);
+
+ LOCK_LOOKUP;
+ sevent = (isc_socketevent_t *)event;
+ query = sevent->ev_arg;
+ REQUIRE(DIG_VALID_QUERY(query));
+
+ INSIST(query->waiting_connect);
+
+ query->waiting_connect = false;
+
+ if (sevent->result == ISC_R_CANCELED) {
+ debug("in cancel handler");
+ isc_sockaddr_format(&query->sockaddr, sockstr, sizeof(sockstr));
+ if (query->timedout) {
+ dighost_warning("Connection to %s(%s) for %s failed: "
+ "%s.",
+ sockstr, query->servname,
+ query->lookup->textname,
+ isc_result_totext(ISC_R_TIMEDOUT));
+ }
+ isc_socket_detach(&query->sock);
+ INSIST(sockcount > 0);
+ sockcount--;
+ debug("sockcount=%d", sockcount);
+ query->waiting_connect = false;
+ isc_event_free(&event);
+ l = query->lookup;
+ clear_query(query);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ if (sevent->result != ISC_R_SUCCESS) {
+ debug("unsuccessful connection: %s",
+ isc_result_totext(sevent->result));
+ isc_sockaddr_format(&query->sockaddr, sockstr, sizeof(sockstr));
+ if (sevent->result != ISC_R_CANCELED) {
+ dighost_warning("Connection to %s(%s) for %s failed: "
+ "%s.",
+ sockstr, query->servname,
+ query->lookup->textname,
+ isc_result_totext(sevent->result));
+ }
+ isc_socket_detach(&query->sock);
+ INSIST(sockcount > 0);
+ sockcount--;
+ /* XXX Clean up exitcodes */
+ if (exitcode < 9) {
+ exitcode = 9;
+ }
+ debug("sockcount=%d", sockcount);
+ query->waiting_connect = false;
+ isc_event_free(&event);
+ l = query->lookup;
+ if ((l->current_query != NULL) &&
+ (ISC_LINK_LINKED(l->current_query, link)))
+ {
+ next = ISC_LIST_NEXT(l->current_query, link);
+ } else {
+ next = NULL;
+ }
+ clear_query(query);
+ if (next != NULL) {
+ bringup_timer(next, TCP_TIMEOUT);
+ send_tcp_connect(next);
+ } else {
+ check_next_lookup(l);
+ }
+ UNLOCK_LOOKUP;
+ return;
+ }
+ exitcode = 0;
+ if (keep_open) {
+ if (keep != NULL) {
+ isc_socket_detach(&keep);
+ }
+ isc_socket_attach(query->sock, &keep);
+ keepaddr = query->sockaddr;
+ }
+ launch_next_query(query, true);
+ isc_event_free(&event);
+ UNLOCK_LOOKUP;
+}
+
+/*%
+ * Check if the ongoing XFR needs more data before it's complete, using
+ * the semantics of IXFR and AXFR protocols. Much of the complexity of
+ * this routine comes from determining when an IXFR is complete.
+ * false means more data is on the way, and the recv has been issued.
+ */
+static bool
+check_for_more_data(dig_query_t *query, dns_message_t *msg,
+ isc_socketevent_t *sevent) {
+ dns_rdataset_t *rdataset = NULL;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ dns_rdata_soa_t soa;
+ uint32_t ixfr_serial = query->lookup->ixfr_serial, serial;
+ isc_result_t result;
+ bool ixfr = query->lookup->rdtype == dns_rdatatype_ixfr;
+ bool axfr = query->lookup->rdtype == dns_rdatatype_axfr;
+
+ if (ixfr) {
+ axfr = query->ixfr_axfr;
+ }
+
+ debug("check_for_more_data(%p)", query);
+
+ /*
+ * By the time we're in this routine, we know we're doing
+ * either an AXFR or IXFR. If there's no second_rr_type,
+ * then we don't yet know which kind of answer we got back
+ * from the server. Here, we're going to walk through the
+ * rr's in the message, acting as necessary whenever we hit
+ * an SOA rr.
+ */
+
+ query->msg_count++;
+ query->byte_count += sevent->n;
+ result = dns_message_firstname(msg, DNS_SECTION_ANSWER);
+ if (result != ISC_R_SUCCESS) {
+ puts("; Transfer failed.");
+ return (true);
+ }
+ do {
+ dns_name_t *name;
+ name = NULL;
+ dns_message_currentname(msg, DNS_SECTION_ANSWER, &name);
+ for (rdataset = ISC_LIST_HEAD(name->list); rdataset != NULL;
+ rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ result = dns_rdataset_first(rdataset);
+ if (result != ISC_R_SUCCESS) {
+ continue;
+ }
+ do {
+ query->rr_count++;
+ dns_rdata_reset(&rdata);
+ dns_rdataset_current(rdataset, &rdata);
+ /*
+ * If this is the first rr, make sure
+ * it's an SOA
+ */
+ if ((!query->first_soa_rcvd) &&
+ (rdata.type != dns_rdatatype_soa))
+ {
+ puts("; Transfer failed. "
+ "Didn't start with SOA answer.");
+ return (true);
+ }
+ if ((!query->second_rr_rcvd) &&
+ (rdata.type != dns_rdatatype_soa))
+ {
+ query->second_rr_rcvd = true;
+ query->second_rr_serial = 0;
+ debug("got the second rr as nonsoa");
+ axfr = query->ixfr_axfr = true;
+ goto next_rdata;
+ }
+
+ /*
+ * If the record is anything except an SOA
+ * now, just continue on...
+ */
+ if (rdata.type != dns_rdatatype_soa) {
+ goto next_rdata;
+ }
+
+ /* Now we have an SOA. Work with it. */
+ debug("got an SOA");
+ result = dns_rdata_tostruct(&rdata, &soa, NULL);
+ check_result(result, "dns_rdata_tostruct");
+ serial = soa.serial;
+ dns_rdata_freestruct(&soa);
+ if (!query->first_soa_rcvd) {
+ query->first_soa_rcvd = true;
+ query->first_rr_serial = serial;
+ debug("this is the first serial %u",
+ serial);
+ if (ixfr &&
+ isc_serial_ge(ixfr_serial, serial))
+ {
+ debug("got up to date "
+ "response");
+ goto doexit;
+ }
+ goto next_rdata;
+ }
+ if (axfr) {
+ debug("doing axfr, got second SOA");
+ goto doexit;
+ }
+ if (!query->second_rr_rcvd) {
+ if (query->first_rr_serial == serial) {
+ debug("doing ixfr, got "
+ "empty zone");
+ goto doexit;
+ }
+ debug("this is the second serial %u",
+ serial);
+ query->second_rr_rcvd = true;
+ query->second_rr_serial = serial;
+ goto next_rdata;
+ }
+ /*
+ * If we get to this point, we're doing an
+ * IXFR and have to start really looking
+ * at serial numbers.
+ */
+ if (query->first_rr_serial == serial) {
+ debug("got a match for ixfr");
+ if (!query->first_repeat_rcvd) {
+ query->first_repeat_rcvd = true;
+ goto next_rdata;
+ }
+ debug("done with ixfr");
+ goto doexit;
+ }
+ debug("meaningless soa %u", serial);
+ next_rdata:
+ result = dns_rdataset_next(rdataset);
+ } while (result == ISC_R_SUCCESS);
+ }
+ result = dns_message_nextname(msg, DNS_SECTION_ANSWER);
+ } while (result == ISC_R_SUCCESS);
+ launch_next_query(query, false);
+ return (false);
+doexit:
+ dighost_received(sevent->n, &sevent->address, query);
+ return (true);
+}
+
+static void
+process_cookie(dig_lookup_t *l, dns_message_t *msg, isc_buffer_t *optbuf,
+ size_t optlen) {
+ char bb[256];
+ isc_buffer_t hexbuf;
+ size_t len;
+ const unsigned char *sent;
+ bool copy = true;
+ isc_result_t result;
+
+ if (l->cookie != NULL) {
+ isc_buffer_init(&hexbuf, bb, sizeof(bb));
+ result = isc_hex_decodestring(l->cookie, &hexbuf);
+ check_result(result, "isc_hex_decodestring");
+ sent = isc_buffer_base(&hexbuf);
+ len = isc_buffer_usedlength(&hexbuf);
+ } else {
+ sent = cookie;
+ len = sizeof(cookie);
+ }
+
+ INSIST(msg->cc_ok == 0 && msg->cc_bad == 0);
+ if (len >= 8 && optlen >= 8U) {
+ if (isc_safe_memequal(isc_buffer_current(optbuf), sent, 8)) {
+ msg->cc_ok = 1;
+ } else {
+ dighost_warning("Warning: Client COOKIE mismatch");
+ msg->cc_bad = 1;
+ copy = false;
+ }
+ } else {
+ dighost_warning("Warning: COOKIE bad token (too short)");
+ msg->cc_bad = 1;
+ copy = false;
+ }
+ if (copy) {
+ isc_region_t r;
+
+ r.base = isc_buffer_current(optbuf);
+ r.length = (unsigned int)optlen;
+ isc_buffer_init(&hexbuf, servercookie, sizeof(servercookie));
+ result = isc_hex_totext(&r, 2, "", &hexbuf);
+ check_result(result, "isc_hex_totext");
+ if (isc_buffer_availablelength(&hexbuf) > 0) {
+ isc_buffer_putuint8(&hexbuf, 0);
+ l->cookie = servercookie;
+ }
+ }
+ isc_buffer_forward(optbuf, (unsigned int)optlen);
+}
+
+static void
+process_opt(dig_lookup_t *l, dns_message_t *msg) {
+ dns_rdata_t rdata;
+ isc_result_t result;
+ isc_buffer_t optbuf;
+ uint16_t optcode, optlen;
+ dns_rdataset_t *opt = msg->opt;
+ bool seen_cookie = false;
+
+ result = dns_rdataset_first(opt);
+ if (result == ISC_R_SUCCESS) {
+ dns_rdata_init(&rdata);
+ dns_rdataset_current(opt, &rdata);
+ isc_buffer_init(&optbuf, rdata.data, rdata.length);
+ isc_buffer_add(&optbuf, rdata.length);
+ while (isc_buffer_remaininglength(&optbuf) >= 4) {
+ optcode = isc_buffer_getuint16(&optbuf);
+ optlen = isc_buffer_getuint16(&optbuf);
+ switch (optcode) {
+ case DNS_OPT_COOKIE:
+ /*
+ * Only process the first cookie option.
+ */
+ if (seen_cookie) {
+ isc_buffer_forward(&optbuf, optlen);
+ break;
+ }
+ process_cookie(l, msg, &optbuf, optlen);
+ seen_cookie = true;
+ break;
+ default:
+ isc_buffer_forward(&optbuf, optlen);
+ break;
+ }
+ }
+ }
+}
+
+static int
+ednsvers(dns_rdataset_t *opt) {
+ return ((opt->ttl >> 16) & 0xff);
+}
+
+/*%
+ * Event handler for recv complete. Perform whatever actions are necessary,
+ * based on the specifics of the user's request.
+ */
+static void
+recv_done(isc_task_t *task, isc_event_t *event) {
+ isc_socketevent_t *sevent = NULL;
+ isc_region_t r;
+ dig_query_t *query = NULL;
+ isc_buffer_t b;
+ dns_message_t *msg = NULL;
+ isc_result_t result;
+ dig_lookup_t *n, *l;
+ bool docancel = false;
+ bool match = true;
+ bool done_process_opt = false;
+ unsigned int parseflags;
+ dns_messageid_t id;
+ unsigned int msgflags;
+ int newedns;
+
+ UNUSED(task);
+ INSIST(!free_now);
+
+ debug("recv_done(%p)", event->ev_arg);
+
+ LOCK_LOOKUP;
+ recvcount--;
+ debug("recvcount=%d", recvcount);
+ INSIST(recvcount >= 0);
+
+ query = event->ev_arg;
+ if (query->lookup->use_usec) {
+ TIME_NOW_HIRES(&query->time_recv);
+ } else {
+ TIME_NOW(&query->time_recv);
+ }
+
+ l = query->lookup;
+
+ REQUIRE(event->ev_type == ISC_SOCKEVENT_RECVDONE);
+ sevent = (isc_socketevent_t *)event;
+
+ isc_buffer_init(&b, sevent->region.base, sevent->n);
+ isc_buffer_add(&b, sevent->n);
+
+ if ((l->tcp_mode) && (query->timer != NULL)) {
+ isc_timer_touch(query->timer);
+ }
+ if ((!l->pending && !l->ns_search_only) || cancel_now) {
+ debug("no longer pending. Got %s",
+ isc_result_totext(sevent->result));
+ query->waiting_connect = false;
+
+ isc_event_free(&event);
+ clear_query(query);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+
+ if (sevent->result != ISC_R_SUCCESS) {
+ if (sevent->result == ISC_R_CANCELED) {
+ debug("in recv cancel handler");
+ query->waiting_connect = false;
+ } else {
+ dighost_error("communications error: %s\n",
+ isc_result_totext(sevent->result));
+ if (keep != NULL) {
+ isc_socket_detach(&keep);
+ }
+ isc_socket_detach(&query->sock);
+ sockcount--;
+ debug("sockcount=%d", sockcount);
+ INSIST(sockcount >= 0);
+ }
+ if (sevent->result == ISC_R_EOF) {
+ requeue_or_update_exitcode(l);
+ }
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+
+ if (!l->tcp_mode &&
+ !isc_sockaddr_compare(&sevent->address, &query->sockaddr,
+ ISC_SOCKADDR_CMPADDR | ISC_SOCKADDR_CMPPORT |
+ ISC_SOCKADDR_CMPSCOPE |
+ ISC_SOCKADDR_CMPSCOPEZERO))
+ {
+ char buf1[ISC_SOCKADDR_FORMATSIZE];
+ char buf2[ISC_SOCKADDR_FORMATSIZE];
+ isc_sockaddr_t any;
+
+ if (isc_sockaddr_pf(&query->sockaddr) == AF_INET) {
+ isc_sockaddr_any(&any);
+ } else {
+ isc_sockaddr_any6(&any);
+ }
+
+ /*
+ * We don't expect a match when the packet is
+ * sent to 0.0.0.0, :: or to a multicast addresses.
+ * XXXMPA broadcast needs to be handled here as well.
+ */
+ if ((!isc_sockaddr_eqaddr(&query->sockaddr, &any) &&
+ !isc_sockaddr_ismulticast(&query->sockaddr)) ||
+ isc_sockaddr_getport(&query->sockaddr) !=
+ isc_sockaddr_getport(&sevent->address))
+ {
+ isc_sockaddr_format(&sevent->address, buf1,
+ sizeof(buf1));
+ isc_sockaddr_format(&query->sockaddr, buf2,
+ sizeof(buf2));
+ dighost_warning("reply from unexpected source: %s,"
+ " expected %s\n",
+ buf1, buf2);
+ if (!l->accept_reply_unexpected_src) {
+ match = false;
+ }
+ }
+ }
+
+ result = dns_message_peekheader(&b, &id, &msgflags);
+ if (result != ISC_R_SUCCESS || l->sendmsg->id != id) {
+ match = false;
+ if (l->tcp_mode) {
+ bool fail = true;
+ if (result == ISC_R_SUCCESS) {
+ if ((!query->first_soa_rcvd || query->warn_id))
+ {
+ dighost_warning("%s: ID mismatch: "
+ "expected ID %u, got "
+ "%u",
+ query->first_soa_rcvd
+ ? "WARNING"
+ : "ERROR",
+ l->sendmsg->id, id);
+ }
+ if (query->first_soa_rcvd) {
+ fail = false;
+ }
+ query->warn_id = false;
+ } else {
+ dighost_warning("ERROR: short (< header size) "
+ "message");
+ }
+ if (fail) {
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ match = true;
+ } else if (result == ISC_R_SUCCESS) {
+ dighost_warning("Warning: ID mismatch: expected ID %u,"
+ " got %u",
+ l->sendmsg->id, id);
+ } else {
+ dighost_warning("Warning: short (< header size) "
+ "message received");
+ }
+ }
+
+ if (result == ISC_R_SUCCESS && (msgflags & DNS_MESSAGEFLAG_QR) == 0) {
+ dighost_warning("Warning: query response not set");
+ }
+
+ if (!match) {
+ goto udp_mismatch;
+ }
+
+ dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &msg);
+
+ if (tsigkey != NULL) {
+ if (l->querysig == NULL) {
+ debug("getting initial querysig");
+ result = dns_message_getquerytsig(l->sendmsg, mctx,
+ &l->querysig);
+ check_result(result, "dns_message_getquerytsig");
+ }
+ result = dns_message_setquerytsig(msg, l->querysig);
+ check_result(result, "dns_message_setquerytsig");
+ result = dns_message_settsigkey(msg, tsigkey);
+ check_result(result, "dns_message_settsigkey");
+ msg->tsigctx = l->tsigctx;
+ l->tsigctx = NULL;
+ if (l->msgcounter != 0) {
+ msg->tcp_continuation = 1;
+ }
+ l->msgcounter++;
+ }
+
+ debug("before parse starts");
+ parseflags = DNS_MESSAGEPARSE_PRESERVEORDER;
+ if (l->besteffort) {
+ parseflags |= DNS_MESSAGEPARSE_BESTEFFORT;
+ parseflags |= DNS_MESSAGEPARSE_IGNORETRUNCATION;
+ }
+ result = dns_message_parse(msg, &b, parseflags);
+ if (result == DNS_R_RECOVERABLE) {
+ dighost_warning("Warning: Message parser reports malformed "
+ "message packet.");
+ result = ISC_R_SUCCESS;
+ }
+ if (result != ISC_R_SUCCESS) {
+ if (!yaml) {
+ printf(";; Got bad packet: %s\n",
+ isc_result_totext(result));
+ hex_dump(&b);
+ }
+ query->waiting_connect = false;
+ dns_message_detach(&msg);
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ if (msg->opcode != l->opcode) {
+ char expect[20] = { 0 }, got[20] = { 0 };
+
+ isc_buffer_init(&b, &expect, sizeof(expect));
+ result = dns_opcode_totext(l->opcode, &b);
+ check_result(result, "dns_opcode_totext");
+
+ isc_buffer_init(&b, &got, sizeof(got));
+ result = dns_opcode_totext(msg->opcode, &b);
+ check_result(result, "dns_opcode_totext");
+
+ dighost_warning("Warning: Opcode mismatch: expected %s, got %s",
+ expect, got);
+
+ dns_message_detach(&msg);
+ if (l->tcp_mode) {
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ } else {
+ goto udp_mismatch;
+ }
+ }
+ if (msg->counts[DNS_SECTION_QUESTION] != 0) {
+ match = true;
+ for (result = dns_message_firstname(msg, DNS_SECTION_QUESTION);
+ result == ISC_R_SUCCESS && match;
+ result = dns_message_nextname(msg, DNS_SECTION_QUESTION))
+ {
+ dns_name_t *name = NULL;
+ dns_rdataset_t *rdataset;
+
+ dns_message_currentname(msg, DNS_SECTION_QUESTION,
+ &name);
+ for (rdataset = ISC_LIST_HEAD(name->list);
+ rdataset != NULL;
+ rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ if (l->rdtype != rdataset->type ||
+ l->rdclass != rdataset->rdclass ||
+ !dns_name_equal(l->name, name))
+ {
+ char namestr[DNS_NAME_FORMATSIZE];
+ char typebuf[DNS_RDATATYPE_FORMATSIZE];
+ char classbuf[DNS_RDATACLASS_FORMATSIZE];
+ dns_name_format(name, namestr,
+ sizeof(namestr));
+ dns_rdatatype_format(rdataset->type,
+ typebuf,
+ sizeof(typebuf));
+ dns_rdataclass_format(rdataset->rdclass,
+ classbuf,
+ sizeof(classbuf));
+ dighost_warning(";; Question section "
+ "mismatch: got "
+ "%s/%s/%s",
+ namestr, typebuf,
+ classbuf);
+ match = false;
+ }
+ }
+ }
+ if (!match) {
+ dns_message_detach(&msg);
+ if (l->tcp_mode) {
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ } else {
+ goto udp_mismatch;
+ }
+ }
+ }
+ if (msg->rcode == dns_rcode_badvers && msg->opt != NULL &&
+ (newedns = ednsvers(msg->opt)) < l->edns && l->ednsneg)
+ {
+ /*
+ * Add minimum EDNS version required checks here if needed.
+ */
+ dighost_comments(l, "BADVERS, retrying with EDNS version %u.",
+ (unsigned int)newedns);
+ l->edns = newedns;
+ n = requeue_lookup(l, true);
+ if (l->trace && l->trace_root) {
+ n->rdtype = l->qrdtype;
+ }
+ dns_message_detach(&msg);
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_TC) != 0 && !l->ignore &&
+ !l->tcp_mode)
+ {
+ if (l->cookie == NULL && l->sendcookie && msg->opt != NULL) {
+ process_opt(l, msg);
+ }
+ dighost_comments(l, "Truncated, retrying in TCP mode.");
+ n = requeue_lookup(l, true);
+ n->tcp_mode = true;
+ if (l->trace && l->trace_root) {
+ n->rdtype = l->qrdtype;
+ }
+ dns_message_detach(&msg);
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ if (msg->rcode == dns_rcode_badcookie && !l->tcp_mode &&
+ l->sendcookie && l->badcookie)
+ {
+ process_opt(l, msg);
+ if (msg->cc_ok) {
+ dighost_comments(l, "BADCOOKIE, retrying%s.",
+ l->seenbadcookie ? " in TCP mode"
+ : "");
+ n = requeue_lookup(l, true);
+ if (l->seenbadcookie) {
+ n->tcp_mode = true;
+ }
+ n->seenbadcookie = true;
+ if (l->trace && l->trace_root) {
+ n->rdtype = l->qrdtype;
+ }
+ dns_message_detach(&msg);
+ isc_event_free(&event);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ done_process_opt = true;
+ }
+ if ((msg->rcode == dns_rcode_servfail && !l->servfail_stops) ||
+ (check_ra && (msg->flags & DNS_MESSAGEFLAG_RA) == 0 && l->recurse))
+ {
+ dig_query_t *next = ISC_LIST_NEXT(query, link);
+ if (l->current_query == query) {
+ l->current_query = NULL;
+ }
+ if (next != NULL) {
+ debug("sending query %p\n", next);
+ if (l->tcp_mode) {
+ send_tcp_connect(next);
+ } else {
+ send_udp(next);
+ }
+ }
+ /*
+ * If our query is at the head of the list and there
+ * is no next, we're the only one left, so fall
+ * through to print the message.
+ */
+ if ((ISC_LIST_HEAD(l->q) != query) ||
+ (ISC_LIST_NEXT(query, link) != NULL))
+ {
+ dighost_comments(l,
+ "Got %s from %s, trying next "
+ "server",
+ msg->rcode == dns_rcode_servfail
+ ? "SERVFAIL reply"
+ : "recursion not available",
+ query->servname);
+ clear_query(query);
+ check_next_lookup(l);
+ dns_message_detach(&msg);
+ isc_event_free(&event);
+ UNLOCK_LOOKUP;
+ return;
+ }
+ }
+
+ if (tsigkey != NULL) {
+ result = dns_tsig_verify(&b, msg, NULL, NULL);
+ if (result != ISC_R_SUCCESS) {
+ dighost_warning("Couldn't verify signature: %s",
+ isc_result_totext(result));
+ validated = false;
+ }
+ l->tsigctx = msg->tsigctx;
+ msg->tsigctx = NULL;
+ if (l->querysig != NULL) {
+ debug("freeing querysig buffer %p", l->querysig);
+ isc_buffer_free(&l->querysig);
+ }
+ result = dns_message_getquerytsig(msg, mctx, &l->querysig);
+ check_result(result, "dns_message_getquerytsig");
+ }
+
+ extrabytes = isc_buffer_remaininglength(&b);
+
+ debug("after parse");
+ if (l->doing_xfr && l->xfr_q == NULL) {
+ l->xfr_q = query;
+ /*
+ * Once we are in the XFR message, increase
+ * the timeout to much longer, so brief network
+ * outages won't cause the XFR to abort
+ */
+ if (timeout != INT_MAX && query->timer != NULL) {
+ unsigned int local_timeout;
+
+ if (timeout == 0) {
+ if (l->tcp_mode) {
+ local_timeout = TCP_TIMEOUT * 4;
+ } else {
+ local_timeout = UDP_TIMEOUT * 4;
+ }
+ } else {
+ if (timeout < (INT_MAX / 4)) {
+ local_timeout = timeout * 4;
+ } else {
+ local_timeout = INT_MAX;
+ }
+ }
+ debug("have local timeout of %d", local_timeout);
+ isc_interval_set(&l->interval, local_timeout, 0);
+ result = isc_timer_reset(query->timer,
+ isc_timertype_once, NULL,
+ &l->interval, false);
+ check_result(result, "isc_timer_reset");
+ }
+ }
+
+ if (!done_process_opt) {
+ if (l->cookie != NULL) {
+ if (msg->opt == NULL) {
+ dighost_warning("expected opt record in "
+ "response");
+ } else {
+ process_opt(l, msg);
+ }
+ } else if (l->sendcookie && msg->opt != NULL) {
+ process_opt(l, msg);
+ }
+ }
+ if (!l->doing_xfr || l->xfr_q == query) {
+ if (msg->rcode == dns_rcode_nxdomain &&
+ (l->origin != NULL || l->need_search))
+ {
+ if (!next_origin(query->lookup) || showsearch) {
+ dighost_printmessage(query, &b, msg, true);
+ dighost_received(isc_buffer_usedlength(&b),
+ &sevent->address, query);
+ }
+ } else if (!l->trace && !l->ns_search_only) {
+ dighost_printmessage(query, &b, msg, true);
+ } else if (l->trace) {
+ int nl = 0;
+ int count = msg->counts[DNS_SECTION_ANSWER];
+
+ debug("in TRACE code");
+ if (!l->ns_search_only) {
+ dighost_printmessage(query, &b, msg, true);
+ }
+
+ l->rdtype = l->qrdtype;
+ if (l->trace_root || (l->ns_search_only && count > 0)) {
+ if (!l->trace_root) {
+ l->rdtype = dns_rdatatype_soa;
+ }
+ nl = followup_lookup(msg, query,
+ DNS_SECTION_ANSWER);
+ l->trace_root = false;
+ } else if (count == 0) {
+ nl = followup_lookup(msg, query,
+ DNS_SECTION_AUTHORITY);
+ }
+ if (nl == 0) {
+ docancel = true;
+ }
+ } else {
+ debug("in NSSEARCH code");
+
+ if (l->trace_root) {
+ /*
+ * This is the initial NS query.
+ */
+ int nl;
+
+ l->rdtype = dns_rdatatype_soa;
+ nl = followup_lookup(msg, query,
+ DNS_SECTION_ANSWER);
+ if (nl == 0) {
+ docancel = true;
+ }
+ l->trace_root = false;
+ usesearch = false;
+ } else {
+ dighost_printmessage(query, &b, msg, true);
+ }
+ }
+ }
+
+ if (l->pending) {
+ debug("still pending.");
+ }
+ if (l->doing_xfr) {
+ if (query != l->xfr_q) {
+ dns_message_detach(&msg);
+ isc_event_free(&event);
+ query->waiting_connect = false;
+ UNLOCK_LOOKUP;
+ return;
+ }
+ if (!docancel) {
+ docancel = check_for_more_data(query, msg, sevent);
+ }
+ if (docancel) {
+ dns_message_detach(&msg);
+ clear_query(query);
+ cancel_lookup(l);
+ check_next_lookup(l);
+ }
+ } else {
+ if (msg->rcode == dns_rcode_noerror || l->origin == NULL) {
+ dighost_received(isc_buffer_usedlength(&b),
+ &sevent->address, query);
+ }
+
+ if (!query->lookup->ns_search_only) {
+ query->lookup->pending = false;
+ }
+ if (!query->lookup->ns_search_only ||
+ query->lookup->trace_root || docancel)
+ {
+ dns_message_detach(&msg);
+ cancel_lookup(l);
+ }
+ clear_query(query);
+ check_next_lookup(l);
+ }
+ if (msg != NULL) {
+ dns_message_detach(&msg);
+ }
+ isc_event_free(&event);
+ UNLOCK_LOOKUP;
+ return;
+
+udp_mismatch:
+ isc_buffer_invalidate(&query->recvbuf);
+ isc_buffer_init(&query->recvbuf, query->recvspace, COMMSIZE);
+ isc_buffer_availableregion(&query->recvbuf, &r);
+ result = isc_socket_recv(query->sock, &r, 1, global_task, recv_done,
+ query);
+ check_result(result, "isc_socket_recv");
+ recvcount++;
+ isc_event_free(&event);
+ UNLOCK_LOOKUP;
+ return;
+}
+
+/*%
+ * Turn a name into an address, using system-supplied routines. This is
+ * used in looking up server names, etc... and needs to use system-supplied
+ * routines, since they may be using a non-DNS system for these lookups.
+ */
+isc_result_t
+get_address(char *host, in_port_t myport, isc_sockaddr_t *sockaddr) {
+ int count;
+ isc_result_t result;
+ bool is_running;
+
+ is_running = isc_app_isrunning();
+ if (is_running) {
+ isc_app_block();
+ }
+ result = bind9_getaddresses(host, myport, sockaddr, 1, &count);
+ if (is_running) {
+ isc_app_unblock();
+ }
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ INSIST(count == 1);
+
+ return (ISC_R_SUCCESS);
+}
+
+int
+getaddresses(dig_lookup_t *lookup, const char *host, isc_result_t *resultp) {
+ isc_result_t result;
+ isc_sockaddr_t sockaddrs[DIG_MAX_ADDRESSES];
+ isc_netaddr_t netaddr;
+ int count, i;
+ dig_server_t *srv;
+ char tmp[ISC_NETADDR_FORMATSIZE];
+
+ result = bind9_getaddresses(host, 0, sockaddrs, DIG_MAX_ADDRESSES,
+ &count);
+ if (resultp != NULL) {
+ *resultp = result;
+ }
+ if (result != ISC_R_SUCCESS) {
+ if (resultp == NULL) {
+ fatal("couldn't get address for '%s': %s", host,
+ isc_result_totext(result));
+ }
+ return (0);
+ }
+
+ for (i = 0; i < count; i++) {
+ isc_netaddr_fromsockaddr(&netaddr, &sockaddrs[i]);
+ isc_netaddr_format(&netaddr, tmp, sizeof(tmp));
+ srv = make_server(tmp, host);
+ ISC_LIST_APPEND(lookup->my_server_list, srv, link);
+ }
+
+ return (count);
+}
+
+/*%
+ * Initiate either a TCP or UDP lookup
+ */
+void
+do_lookup(dig_lookup_t *lookup) {
+ dig_query_t *query;
+
+ REQUIRE(lookup != NULL);
+
+ debug("do_lookup(%p)", lookup);
+ lookup->pending = true;
+ query = ISC_LIST_HEAD(lookup->q);
+ if (query != NULL) {
+ REQUIRE(DIG_VALID_QUERY(query));
+ if (lookup->tcp_mode) {
+ send_tcp_connect(query);
+ } else {
+ send_udp(query);
+ }
+ }
+}
+
+/*%
+ * Start everything in action upon task startup.
+ */
+void
+onrun_callback(isc_task_t *task, isc_event_t *event) {
+ UNUSED(task);
+
+ isc_event_free(&event);
+ LOCK_LOOKUP;
+ start_lookup();
+ UNLOCK_LOOKUP;
+}
+
+/*%
+ * Make everything on the lookup queue go away. Mainly used by the
+ * SIGINT handler.
+ */
+void
+cancel_all(void) {
+ dig_lookup_t *l, *n;
+ dig_query_t *q, *nq;
+
+ debug("cancel_all()");
+
+ LOCK_LOOKUP;
+ if (free_now) {
+ UNLOCK_LOOKUP;
+ return;
+ }
+ cancel_now = true;
+ if (current_lookup != NULL) {
+ for (q = ISC_LIST_HEAD(current_lookup->q); q != NULL; q = nq) {
+ nq = ISC_LIST_NEXT(q, link);
+ debug("canceling pending query %p, belonging to %p", q,
+ current_lookup);
+ if (q->sock != NULL) {
+ isc_socket_cancel(q->sock, NULL,
+ ISC_SOCKCANCEL_ALL);
+ } else {
+ clear_query(q);
+ }
+ }
+ for (q = ISC_LIST_HEAD(current_lookup->connecting); q != NULL;
+ q = nq)
+ {
+ nq = ISC_LIST_NEXT(q, clink);
+ debug("canceling connecting query %p, belonging to %p",
+ q, current_lookup);
+ if (q->sock != NULL) {
+ isc_socket_cancel(q->sock, NULL,
+ ISC_SOCKCANCEL_ALL);
+ } else {
+ clear_query(q);
+ }
+ }
+ }
+ l = ISC_LIST_HEAD(lookup_list);
+ while (l != NULL) {
+ n = ISC_LIST_NEXT(l, link);
+ ISC_LIST_DEQUEUE(lookup_list, l, link);
+ try_clear_lookup(l);
+ l = n;
+ }
+ UNLOCK_LOOKUP;
+}
+
+/*%
+ * Destroy all of the libs we are using, and get everything ready for a
+ * clean shutdown.
+ */
+void
+destroy_libs(void) {
+#ifdef HAVE_LIBIDN2
+ isc_result_t result;
+#endif /* HAVE_LIBIDN2 */
+
+ if (keep != NULL) {
+ isc_socket_detach(&keep);
+ }
+ debug("destroy_libs()");
+ if (global_task != NULL) {
+ debug("freeing task");
+ isc_task_detach(&global_task);
+ }
+
+ if (taskmgr != NULL) {
+ debug("freeing taskmgr");
+ isc_managers_destroy(&netmgr, &taskmgr);
+ }
+ LOCK_LOOKUP;
+ REQUIRE(sockcount == 0);
+ REQUIRE(recvcount == 0);
+ REQUIRE(sendcount == 0);
+
+ INSIST(ISC_LIST_HEAD(lookup_list) == NULL);
+ INSIST(current_lookup == NULL);
+ INSIST(!free_now);
+
+ free_now = true;
+
+ flush_server_list();
+
+ clear_searchlist();
+
+#ifdef HAVE_LIBIDN2
+ result = dns_name_settotextfilter(NULL);
+ check_result(result, "dns_name_settotextfilter");
+#endif /* HAVE_LIBIDN2 */
+
+ if (socketmgr != NULL) {
+ debug("freeing socketmgr");
+ isc_socketmgr_destroy(&socketmgr);
+ }
+ if (timermgr != NULL) {
+ debug("freeing timermgr");
+ isc_timermgr_destroy(&timermgr);
+ }
+ if (tsigkey != NULL) {
+ debug("freeing key %p", tsigkey);
+ dns_tsigkey_detach(&tsigkey);
+ }
+ if (namebuf != NULL) {
+ isc_buffer_free(&namebuf);
+ }
+
+ if (is_dst_up) {
+ debug("destroy DST lib");
+ dst_lib_destroy();
+ is_dst_up = false;
+ }
+
+ UNLOCK_LOOKUP;
+ isc_mutex_destroy(&lookup_lock);
+ debug("Removing log context");
+ isc_log_destroy(&lctx);
+
+ debug("Destroy memory");
+ if (memdebugging != 0) {
+ isc_mem_stats(mctx, stderr);
+ }
+ if (mctx != NULL) {
+ isc_mem_destroy(&mctx);
+ }
+}
+
+#ifdef HAVE_LIBIDN2
+static isc_result_t
+idn_output_filter(isc_buffer_t *buffer, unsigned int used_org) {
+ char src[MXNAME], *dst = NULL;
+ size_t srclen, dstlen;
+ isc_result_t result = ISC_R_SUCCESS;
+
+ /*
+ * Copy name from 'buffer' to 'src' and terminate it with NULL.
+ */
+ srclen = isc_buffer_usedlength(buffer) - used_org;
+ if (srclen >= sizeof(src)) {
+ warn("Input name too long to perform IDN conversion");
+ goto cleanup;
+ }
+ memmove(src, (char *)isc_buffer_base(buffer) + used_org, srclen);
+ src[srclen] = '\0';
+
+ systemlocale(LC_ALL);
+
+ /*
+ * Convert 'src' to the current locale's character encoding.
+ */
+ idn_ace_to_locale(src, &dst);
+
+ resetlocale(LC_ALL);
+
+ /*
+ * Check whether the converted name will fit back into 'buffer'.
+ */
+ dstlen = strlen(dst);
+ if (isc_buffer_length(buffer) < used_org + dstlen) {
+ result = ISC_R_NOSPACE;
+ goto cleanup;
+ }
+
+ /*
+ * Put the converted name back into 'buffer'.
+ */
+ isc_buffer_subtract(buffer, srclen);
+ memmove(isc_buffer_used(buffer), dst, dstlen);
+ isc_buffer_add(buffer, dstlen);
+
+ /*
+ * Clean up.
+ */
+cleanup:
+ if (dst != NULL) {
+ idn2_free(dst);
+ }
+
+ return (result);
+}
+
+/*%
+ * Convert 'src', which is a string using the current locale's character
+ * encoding, into an ACE string suitable for use in the DNS, storing the
+ * conversion result in 'dst', which is 'dstlen' bytes large.
+ *
+ * 'dst' MUST be large enough to hold any valid domain name.
+ */
+static void
+idn_locale_to_ace(const char *src, char *dst, size_t dstlen) {
+ const char *final_src;
+ char *ascii_src;
+ int res;
+
+ systemlocale(LC_ALL);
+
+ /*
+ * We trust libidn2 to return an error if 'src' is too large to be a
+ * valid domain name.
+ */
+ res = idn2_to_ascii_lz(src, &ascii_src, IDN2_NONTRANSITIONAL);
+ if (res == IDN2_DISALLOWED) {
+ res = idn2_to_ascii_lz(src, &ascii_src, IDN2_TRANSITIONAL);
+ }
+ if (res != IDN2_OK) {
+ fatal("'%s' is not a legal IDNA2008 name (%s), use +noidnin",
+ src, idn2_strerror(res));
+ }
+
+ /*
+ * idn2_to_ascii_lz() normalizes all strings to lower case, but we
+ * generally don't want to lowercase all input strings; make sure to
+ * return the original case if the two strings differ only in case.
+ */
+ final_src = (strcasecmp(src, ascii_src) == 0 ? src : ascii_src);
+
+ (void)strlcpy(dst, final_src, dstlen);
+
+ idn2_free(ascii_src);
+
+ resetlocale(LC_ALL);
+}
+
+/*%
+ * Convert 'src', which is an ACE string suitable for use in the DNS, into a
+ * string using the current locale's character encoding, storing the conversion
+ * result in 'dst'.
+ *
+ * The caller MUST subsequently release 'dst' using idn2_free().
+ */
+static void
+idn_ace_to_locale(const char *src, char **dst) {
+ char *local_src, *utf8_src;
+ int res;
+
+ systemlocale(LC_ALL);
+
+ /*
+ * We need to:
+ *
+ * 1) check whether 'src' is a valid IDNA2008 name,
+ * 2) if it is, output it in the current locale's character encoding.
+ *
+ * Unlike idn2_to_ascii_*(), idn2_to_unicode_*() functions are unable
+ * to perform IDNA2008 validity checks. Thus, we need to decode any
+ * Punycode in 'src', check if the resulting name is a valid IDNA2008
+ * name, and only once we ensure it is, output that name in the current
+ * locale's character encoding.
+ *
+ * We could just use idn2_to_unicode_8zlz() + idn2_to_ascii_lz(), but
+ * then we would not be able to universally tell invalid names and
+ * character encoding errors apart (if the current locale uses ASCII
+ * for character encoding, the former function would fail even for a
+ * valid IDNA2008 name, as long as it contained any non-ASCII
+ * character). Thus, we need to take a longer route.
+ *
+ * First, convert 'src' to UTF-8, ignoring the current locale.
+ */
+ res = idn2_to_unicode_8z8z(src, &utf8_src, 0);
+ if (res != IDN2_OK) {
+ fatal("Bad ACE string '%s' (%s), use +noidnout", src,
+ idn2_strerror(res));
+ }
+
+ /*
+ * Then, check whether decoded 'src' is a valid IDNA2008 name
+ * and if disallowed character is found, fallback to IDNA2003.
+ */
+ res = idn2_to_ascii_8z(utf8_src, NULL, IDN2_NONTRANSITIONAL);
+ if (res == IDN2_DISALLOWED) {
+ res = idn2_to_ascii_8z(utf8_src, NULL, IDN2_TRANSITIONAL);
+ }
+ if (res != IDN2_OK) {
+ fatal("'%s' is not a legal IDNA2008 name (%s), use +noidnout",
+ src, idn2_strerror(res));
+ }
+
+ /*
+ * Finally, try converting the decoded 'src' into the current locale's
+ * character encoding.
+ */
+ res = idn2_to_unicode_8zlz(utf8_src, &local_src, 0);
+ if (res != IDN2_OK) {
+ static bool warned = false;
+
+ res = idn2_to_ascii_8z(utf8_src, &local_src, 0);
+ if (res != IDN2_OK) {
+ fatal("Cannot represent '%s' "
+ "in the current locale nor ascii (%s), "
+ "use +noidnout or a different locale",
+ src, idn2_strerror(res));
+ } else if (!warned) {
+ fprintf(stderr,
+ ";; Warning: cannot represent '%s' "
+ "in the current locale",
+ local_src);
+ warned = true;
+ }
+ }
+
+ /*
+ * Free the interim conversion result.
+ */
+ idn2_free(utf8_src);
+
+ *dst = local_src;
+
+ resetlocale(LC_ALL);
+}
+#endif /* HAVE_LIBIDN2 */
diff --git a/bin/dig/host.c b/bin/dig/host.c
new file mode 100644
index 0000000..db2e8d4
--- /dev/null
+++ b/bin/dig/host.c
@@ -0,0 +1,927 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <isc/app.h>
+#include <isc/commandline.h>
+#include <isc/netaddr.h>
+#include <isc/print.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/util.h>
+
+#include <dns/byaddr.h>
+#include <dns/fixedname.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+
+#include <dig/dig.h>
+
+static bool short_form = true, listed_server = false;
+static bool default_lookups = true;
+static int seen_error = -1;
+static bool list_addresses = true;
+static bool list_almost_all = false;
+static dns_rdatatype_t list_type = dns_rdatatype_a;
+static bool printed_server = false;
+static bool ipv4only = false, ipv6only = false;
+
+static const char *opcodetext[] = { "QUERY", "IQUERY", "STATUS",
+ "RESERVED3", "NOTIFY", "UPDATE",
+ "RESERVED6", "RESERVED7", "RESERVED8",
+ "RESERVED9", "RESERVED10", "RESERVED11",
+ "RESERVED12", "RESERVED13", "RESERVED14",
+ "RESERVED15" };
+
+static const char *rcodetext[] = { "NOERROR", "FORMERR", "SERVFAIL",
+ "NXDOMAIN", "NOTIMP", "REFUSED",
+ "YXDOMAIN", "YXRRSET", "NXRRSET",
+ "NOTAUTH", "NOTZONE", "RESERVED11",
+ "RESERVED12", "RESERVED13", "RESERVED14",
+ "RESERVED15", "BADVERS" };
+
+struct rtype {
+ unsigned int type;
+ const char *text;
+};
+
+struct rtype rtypes[] = { { 1, "has address" },
+ { 2, "name server" },
+ { 5, "is an alias for" },
+ { 11, "has well known services" },
+ { 12, "domain name pointer" },
+ { 13, "host information" },
+ { 15, "mail is handled by" },
+ { 16, "descriptive text" },
+ { 19, "x25 address" },
+ { 20, "ISDN address" },
+ { 24, "has signature" },
+ { 25, "has key" },
+ { 28, "has IPv6 address" },
+ { 29, "location" },
+ { 0, NULL } };
+
+static char *
+rcode_totext(dns_rcode_t rcode) {
+ static char buf[sizeof("?65535")];
+ union {
+ const char *consttext;
+ char *deconsttext;
+ } totext;
+
+ if (rcode >= (sizeof(rcodetext) / sizeof(rcodetext[0]))) {
+ snprintf(buf, sizeof(buf), "?%u", rcode);
+ totext.deconsttext = buf;
+ } else {
+ totext.consttext = rcodetext[rcode];
+ }
+ return (totext.deconsttext);
+}
+
+ISC_PLATFORM_NORETURN_PRE static void
+show_usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+show_usage(void) {
+ fputs("Usage: host [-aCdilrTvVw] [-c class] [-N ndots] [-t type] [-W "
+ "time]\n"
+ " [-R number] [-m flag] [-p port] hostname [server]\n"
+ " -a is equivalent to -v -t ANY\n"
+ " -A is like -a but omits RRSIG, NSEC, NSEC3\n"
+ " -c specifies query class for non-IN data\n"
+ " -C compares SOA records on authoritative nameservers\n"
+ " -d is equivalent to -v\n"
+ " -l lists all hosts in a domain, using AXFR\n"
+ " -m set memory debugging flag (trace|record|usage)\n"
+ " -N changes the number of dots allowed before root lookup "
+ "is done\n"
+ " -p specifies the port on the server to query\n"
+ " -r disables recursive processing\n"
+ " -R specifies number of retries for UDP packets\n"
+ " -s a SERVFAIL response should stop query\n"
+ " -t specifies the query type\n"
+ " -T enables TCP/IP mode\n"
+ " -U enables UDP mode\n"
+ " -v enables verbose output\n"
+ " -V print version number and exit\n"
+ " -w specifies to wait forever for a reply\n"
+ " -W specifies how long to wait for a reply\n"
+ " -4 use IPv4 query transport only\n"
+ " -6 use IPv6 query transport only\n",
+ stderr);
+ exit(1);
+}
+
+static void
+host_shutdown(void) {
+ (void)isc_app_shutdown();
+}
+
+static void
+received(unsigned int bytes, isc_sockaddr_t *from, dig_query_t *query) {
+ isc_time_t now;
+ int diff;
+
+ if (!short_form) {
+ char fromtext[ISC_SOCKADDR_FORMATSIZE];
+ isc_sockaddr_format(from, fromtext, sizeof(fromtext));
+ if (query->lookup->use_usec) {
+ TIME_NOW_HIRES(&now);
+ } else {
+ TIME_NOW(&now);
+ }
+ diff = (int)isc_time_microdiff(&now, &query->time_sent);
+ printf("Received %u bytes from %s in %d ms\n", bytes, fromtext,
+ diff / 1000);
+ }
+}
+
+static void
+trying(char *frm, dig_lookup_t *lookup) {
+ UNUSED(lookup);
+
+ if (!short_form) {
+ printf("Trying \"%s\"\n", frm);
+ }
+}
+
+static void
+say_message(dns_name_t *name, const char *msg, dns_rdata_t *rdata,
+ dig_query_t *query) {
+ isc_buffer_t *b = NULL;
+ char namestr[DNS_NAME_FORMATSIZE];
+ isc_region_t r;
+ isc_result_t result;
+ unsigned int bufsize = BUFSIZ;
+
+ dns_name_format(name, namestr, sizeof(namestr));
+retry:
+ isc_buffer_allocate(mctx, &b, bufsize);
+ result = dns_rdata_totext(rdata, NULL, b);
+ if (result == ISC_R_NOSPACE) {
+ isc_buffer_free(&b);
+ bufsize *= 2;
+ goto retry;
+ }
+ check_result(result, "dns_rdata_totext");
+ isc_buffer_usedregion(b, &r);
+ if (query->lookup->identify_previous_line) {
+ printf("Nameserver %s:\n\t", query->servname);
+ }
+ printf("%s %s %.*s", namestr, msg, (int)r.length, (char *)r.base);
+ if (query->lookup->identify) {
+ printf(" on server %s", query->servname);
+ }
+ printf("\n");
+ isc_buffer_free(&b);
+}
+
+static isc_result_t
+printsection(dns_message_t *msg, dns_section_t sectionid,
+ const char *section_name, bool headers, dig_query_t *query) {
+ dns_name_t *name, *print_name;
+ dns_rdataset_t *rdataset;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ isc_buffer_t target;
+ isc_result_t result, loopresult;
+ isc_region_t r;
+ dns_name_t empty_name;
+ char tbuf[4096] = { 0 };
+ bool first;
+ bool no_rdata = (sectionid == DNS_SECTION_QUESTION);
+
+ if (headers) {
+ printf(";; %s SECTION:\n", section_name);
+ }
+
+ dns_name_init(&empty_name, NULL);
+
+ result = dns_message_firstname(msg, sectionid);
+ if (result == ISC_R_NOMORE) {
+ return (ISC_R_SUCCESS);
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ for (;;) {
+ name = NULL;
+ dns_message_currentname(msg, sectionid, &name);
+
+ isc_buffer_init(&target, tbuf, sizeof(tbuf));
+ first = true;
+ print_name = name;
+
+ for (rdataset = ISC_LIST_HEAD(name->list); rdataset != NULL;
+ rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ if (query->lookup->rdtype == dns_rdatatype_axfr &&
+ !((!list_addresses &&
+ (list_type == dns_rdatatype_any ||
+ rdataset->type == list_type)) ||
+ (list_addresses &&
+ (rdataset->type == dns_rdatatype_a ||
+ rdataset->type == dns_rdatatype_aaaa ||
+ rdataset->type == dns_rdatatype_ns ||
+ rdataset->type == dns_rdatatype_ptr))))
+ {
+ continue;
+ }
+ if (list_almost_all &&
+ (rdataset->type == dns_rdatatype_rrsig ||
+ rdataset->type == dns_rdatatype_nsec ||
+ rdataset->type == dns_rdatatype_nsec3))
+ {
+ continue;
+ }
+ if (!short_form) {
+ result = dns_rdataset_totext(rdataset,
+ print_name, false,
+ no_rdata, &target);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+#ifdef USEINITALWS
+ if (first) {
+ print_name = &empty_name;
+ first = false;
+ }
+#else /* ifdef USEINITALWS */
+ UNUSED(first); /* Shut up compiler. */
+#endif /* ifdef USEINITALWS */
+ } else {
+ loopresult = dns_rdataset_first(rdataset);
+ while (loopresult == ISC_R_SUCCESS) {
+ struct rtype *t;
+ const char *rtt;
+ char typebuf[DNS_RDATATYPE_FORMATSIZE];
+ char typebuf2[DNS_RDATATYPE_FORMATSIZE +
+ 20];
+ dns_rdataset_current(rdataset, &rdata);
+
+ for (t = rtypes; t->text != NULL; t++) {
+ if (t->type == rdata.type) {
+ rtt = t->text;
+ goto found;
+ }
+ }
+
+ dns_rdatatype_format(rdata.type,
+ typebuf,
+ sizeof(typebuf));
+ snprintf(typebuf2, sizeof(typebuf2),
+ "has %s record", typebuf);
+ rtt = typebuf2;
+ found:
+ say_message(print_name, rtt, &rdata,
+ query);
+ dns_rdata_reset(&rdata);
+ loopresult =
+ dns_rdataset_next(rdataset);
+ }
+ }
+ }
+ if (!short_form) {
+ isc_buffer_usedregion(&target, &r);
+ if (no_rdata) {
+ printf(";%.*s", (int)r.length, (char *)r.base);
+ } else {
+ printf("%.*s", (int)r.length, (char *)r.base);
+ }
+ }
+
+ result = dns_message_nextname(msg, sectionid);
+ if (result == ISC_R_NOMORE) {
+ break;
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+printrdata(dns_message_t *msg, dns_rdataset_t *rdataset,
+ const dns_name_t *owner, const char *set_name, bool headers) {
+ isc_buffer_t target;
+ isc_result_t result;
+ isc_region_t r;
+ char tbuf[4096];
+
+ UNUSED(msg);
+ if (headers) {
+ printf(";; %s SECTION:\n", set_name);
+ }
+
+ isc_buffer_init(&target, tbuf, sizeof(tbuf));
+
+ result = dns_rdataset_totext(rdataset, owner, false, false, &target);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ isc_buffer_usedregion(&target, &r);
+ printf("%.*s", (int)r.length, (char *)r.base);
+
+ return (ISC_R_SUCCESS);
+}
+
+static void
+chase_cnamechain(dns_message_t *msg, dns_name_t *qname) {
+ isc_result_t result;
+ dns_rdataset_t *rdataset;
+ dns_rdata_cname_t cname;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ unsigned int i = msg->counts[DNS_SECTION_ANSWER];
+
+ while (i-- > 0) {
+ rdataset = NULL;
+ result = dns_message_findname(msg, DNS_SECTION_ANSWER, qname,
+ dns_rdatatype_cname, 0, NULL,
+ &rdataset);
+ if (result != ISC_R_SUCCESS) {
+ return;
+ }
+ result = dns_rdataset_first(rdataset);
+ check_result(result, "dns_rdataset_first");
+ dns_rdata_reset(&rdata);
+ dns_rdataset_current(rdataset, &rdata);
+ result = dns_rdata_tostruct(&rdata, &cname, NULL);
+ check_result(result, "dns_rdata_tostruct");
+ dns_name_copynf(&cname.cname, qname);
+ dns_rdata_freestruct(&cname);
+ }
+}
+
+static isc_result_t
+printmessage(dig_query_t *query, const isc_buffer_t *msgbuf, dns_message_t *msg,
+ bool headers) {
+ bool did_flag = false;
+ dns_rdataset_t *opt, *tsig = NULL;
+ const dns_name_t *tsigname;
+ isc_result_t result = ISC_R_SUCCESS;
+ int force_error;
+
+ UNUSED(msgbuf);
+ UNUSED(headers);
+
+ /*
+ * We get called multiple times.
+ * Preserve any existing error status.
+ */
+ force_error = (seen_error == 1) ? 1 : 0;
+ seen_error = 1;
+ if (listed_server && !printed_server) {
+ char sockstr[ISC_SOCKADDR_FORMATSIZE];
+
+ printf("Using domain server:\n");
+ printf("Name: %s\n", query->userarg);
+ isc_sockaddr_format(&query->sockaddr, sockstr, sizeof(sockstr));
+ printf("Address: %s\n", sockstr);
+ printf("Aliases: \n\n");
+ printed_server = true;
+ }
+
+ if (msg->rcode != 0) {
+ char namestr[DNS_NAME_FORMATSIZE];
+ dns_name_format(query->lookup->name, namestr, sizeof(namestr));
+
+ if (query->lookup->identify_previous_line) {
+ printf("Nameserver %s:\n\t%s not found: %d(%s)\n",
+ query->servname,
+ (msg->rcode != dns_rcode_nxdomain)
+ ? namestr
+ : query->lookup->textname,
+ msg->rcode, rcode_totext(msg->rcode));
+ } else {
+ printf("Host %s not found: %d(%s)\n",
+ (msg->rcode != dns_rcode_nxdomain)
+ ? namestr
+ : query->lookup->textname,
+ msg->rcode, rcode_totext(msg->rcode));
+ }
+ return (ISC_R_SUCCESS);
+ }
+
+ if (default_lookups && query->lookup->rdtype == dns_rdatatype_a) {
+ char namestr[DNS_NAME_FORMATSIZE];
+ dig_lookup_t *lookup;
+ dns_fixedname_t fixed;
+ dns_name_t *name;
+
+ /* Add AAAA and MX lookups. */
+ name = dns_fixedname_initname(&fixed);
+ dns_name_copynf(query->lookup->name, name);
+ chase_cnamechain(msg, name);
+ dns_name_format(name, namestr, sizeof(namestr));
+ lookup = clone_lookup(query->lookup, false);
+ if (lookup != NULL) {
+ strlcpy(lookup->textname, namestr,
+ sizeof(lookup->textname));
+ lookup->rdtype = dns_rdatatype_aaaa;
+ lookup->rdtypeset = true;
+ lookup->origin = NULL;
+ lookup->retries = tries;
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+ }
+ lookup = clone_lookup(query->lookup, false);
+ if (lookup != NULL) {
+ strlcpy(lookup->textname, namestr,
+ sizeof(lookup->textname));
+ lookup->rdtype = dns_rdatatype_mx;
+ lookup->rdtypeset = true;
+ lookup->origin = NULL;
+ lookup->retries = tries;
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+ }
+ }
+
+ if (!short_form) {
+ printf(";; ->>HEADER<<- opcode: %s, status: %s, id: %u\n",
+ opcodetext[msg->opcode], rcode_totext(msg->rcode),
+ msg->id);
+ printf(";; flags: ");
+ if ((msg->flags & DNS_MESSAGEFLAG_QR) != 0) {
+ printf("qr");
+ did_flag = true;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_AA) != 0) {
+ printf("%saa", did_flag ? " " : "");
+ did_flag = true;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_TC) != 0) {
+ printf("%stc", did_flag ? " " : "");
+ did_flag = true;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_RD) != 0) {
+ printf("%srd", did_flag ? " " : "");
+ did_flag = true;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_RA) != 0) {
+ printf("%sra", did_flag ? " " : "");
+ did_flag = true;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_AD) != 0) {
+ printf("%sad", did_flag ? " " : "");
+ did_flag = true;
+ }
+ if ((msg->flags & DNS_MESSAGEFLAG_CD) != 0) {
+ printf("%scd", did_flag ? " " : "");
+ did_flag = true;
+ POST(did_flag);
+ }
+ printf("; QUERY: %u, ANSWER: %u, "
+ "AUTHORITY: %u, ADDITIONAL: %u\n",
+ msg->counts[DNS_SECTION_QUESTION],
+ msg->counts[DNS_SECTION_ANSWER],
+ msg->counts[DNS_SECTION_AUTHORITY],
+ msg->counts[DNS_SECTION_ADDITIONAL]);
+ opt = dns_message_getopt(msg);
+ if (opt != NULL) {
+ printf(";; EDNS: version: %u, udp=%u\n",
+ (unsigned int)((opt->ttl & 0x00ff0000) >> 16),
+ (unsigned int)opt->rdclass);
+ }
+ tsigname = NULL;
+ tsig = dns_message_gettsig(msg, &tsigname);
+ if (tsig != NULL) {
+ printf(";; PSEUDOSECTIONS: TSIG\n");
+ }
+ }
+ if (!ISC_LIST_EMPTY(msg->sections[DNS_SECTION_QUESTION]) && !short_form)
+ {
+ printf("\n");
+ result = printsection(msg, DNS_SECTION_QUESTION, "QUESTION",
+ true, query);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+ if (!ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ANSWER])) {
+ if (!short_form) {
+ printf("\n");
+ }
+ result = printsection(msg, DNS_SECTION_ANSWER, "ANSWER",
+ !short_form, query);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+
+ if (!ISC_LIST_EMPTY(msg->sections[DNS_SECTION_AUTHORITY]) &&
+ !short_form)
+ {
+ printf("\n");
+ result = printsection(msg, DNS_SECTION_AUTHORITY, "AUTHORITY",
+ true, query);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+ if (!ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ADDITIONAL]) &&
+ !short_form)
+ {
+ printf("\n");
+ result = printsection(msg, DNS_SECTION_ADDITIONAL, "ADDITIONAL",
+ true, query);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+ if ((tsig != NULL) && !short_form) {
+ printf("\n");
+ result = printrdata(msg, tsig, tsigname, "PSEUDOSECTION TSIG",
+ true);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+ if (!short_form) {
+ printf("\n");
+ }
+
+ if (short_form && !default_lookups &&
+ ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ANSWER]))
+ {
+ char namestr[DNS_NAME_FORMATSIZE];
+ char typestr[DNS_RDATATYPE_FORMATSIZE];
+ dns_name_format(query->lookup->name, namestr, sizeof(namestr));
+ dns_rdatatype_format(query->lookup->rdtype, typestr,
+ sizeof(typestr));
+ printf("%s has no %s record\n", namestr, typestr);
+ }
+ seen_error = force_error;
+ return (result);
+}
+
+static const char *optstring = "46aAc:dilnm:p:rst:vVwCDN:R:TUW:";
+
+/*% version */
+static void
+version(void) {
+ fputs("host " VERSION "\n", stderr);
+}
+
+static void
+pre_parse_args(int argc, char **argv) {
+ int c;
+
+ while ((c = isc_commandline_parse(argc, argv, optstring)) != -1) {
+ switch (c) {
+ case 'm':
+ memdebugging = true;
+ if (strcasecmp("trace", isc_commandline_argument) == 0)
+ {
+ isc_mem_debugging |= ISC_MEM_DEBUGTRACE;
+ } else if (strcasecmp("record",
+ isc_commandline_argument) == 0)
+ {
+ isc_mem_debugging |= ISC_MEM_DEBUGRECORD;
+ } else if (strcasecmp("usage",
+ isc_commandline_argument) == 0)
+ {
+ isc_mem_debugging |= ISC_MEM_DEBUGUSAGE;
+ }
+ break;
+
+ case '4':
+ if (ipv6only) {
+ fatal("only one of -4 and -6 allowed");
+ }
+ ipv4only = true;
+ break;
+ case '6':
+ if (ipv4only) {
+ fatal("only one of -4 and -6 allowed");
+ }
+ ipv6only = true;
+ break;
+ case 'a':
+ break;
+ case 'A':
+ break;
+ case 'c':
+ break;
+ case 'C':
+ break;
+ case 'd':
+ break;
+ case 'D':
+ if (debugging) {
+ debugtiming = true;
+ }
+ debugging = true;
+ break;
+ case 'i':
+ break;
+ case 'l':
+ break;
+ case 'n':
+ break;
+ case 'N':
+ break;
+ case 'p':
+ break;
+ case 'r':
+ break;
+ case 'R':
+ break;
+ case 's':
+ break;
+ case 't':
+ break;
+ case 'T':
+ break;
+ case 'U':
+ break;
+ case 'v':
+ break;
+ case 'V':
+ version();
+ exit(0);
+ break;
+ case 'w':
+ break;
+ case 'W':
+ break;
+ default:
+ show_usage();
+ }
+ }
+ isc_commandline_reset = true;
+ isc_commandline_index = 1;
+}
+
+static void
+parse_args(bool is_batchfile, int argc, char **argv) {
+ char hostname[MXNAME];
+ dig_lookup_t *lookup;
+ int c;
+ char store[MXNAME];
+ isc_textregion_t tr;
+ isc_result_t result = ISC_R_SUCCESS;
+ dns_rdatatype_t rdtype;
+ dns_rdataclass_t rdclass;
+ uint32_t serial = 0;
+
+ UNUSED(is_batchfile);
+
+ lookup = make_empty_lookup();
+
+ lookup->servfail_stops = false;
+ lookup->besteffort = false;
+ lookup->comments = false;
+ short_form = !verbose;
+
+ while ((c = isc_commandline_parse(argc, argv, optstring)) != -1) {
+ switch (c) {
+ case 'l':
+ lookup->tcp_mode = true;
+ lookup->rdtype = dns_rdatatype_axfr;
+ lookup->rdtypeset = true;
+ fatalexit = 3;
+ break;
+ case 'v':
+ case 'd':
+ short_form = false;
+ break;
+ case 'r':
+ lookup->recurse = false;
+ break;
+ case 't':
+ if (strncasecmp(isc_commandline_argument, "ixfr=", 5) ==
+ 0)
+ {
+ rdtype = dns_rdatatype_ixfr;
+ /* XXXMPA add error checking */
+ serial = strtoul(isc_commandline_argument + 5,
+ NULL, 10);
+ result = ISC_R_SUCCESS;
+ } else {
+ tr.base = isc_commandline_argument;
+ tr.length = strlen(isc_commandline_argument);
+ result = dns_rdatatype_fromtext(
+ &rdtype, (isc_textregion_t *)&tr);
+ }
+
+ if (result != ISC_R_SUCCESS) {
+ fatalexit = 2;
+ fatal("invalid type: %s\n",
+ isc_commandline_argument);
+ }
+ if (!lookup->rdtypeset ||
+ lookup->rdtype != dns_rdatatype_axfr)
+ {
+ lookup->rdtype = rdtype;
+ }
+ lookup->rdtypeset = true;
+ if (rdtype == dns_rdatatype_axfr) {
+ /* -l -t any -v */
+ list_type = dns_rdatatype_any;
+ short_form = false;
+ lookup->tcp_mode = true;
+ } else if (rdtype == dns_rdatatype_ixfr) {
+ lookup->ixfr_serial = serial;
+ lookup->tcp_mode = true;
+ list_type = rdtype;
+ } else if (rdtype == dns_rdatatype_any) {
+ if (!lookup->tcp_mode_set) {
+ lookup->tcp_mode = true;
+ }
+ } else {
+ list_type = rdtype;
+ }
+ list_addresses = false;
+ default_lookups = false;
+ break;
+ case 'c':
+ tr.base = isc_commandline_argument;
+ tr.length = strlen(isc_commandline_argument);
+ result = dns_rdataclass_fromtext(
+ &rdclass, (isc_textregion_t *)&tr);
+
+ if (result != ISC_R_SUCCESS) {
+ fatalexit = 2;
+ fatal("invalid class: %s\n",
+ isc_commandline_argument);
+ } else {
+ lookup->rdclass = rdclass;
+ lookup->rdclassset = true;
+ }
+ default_lookups = false;
+ break;
+ case 'A':
+ list_almost_all = true;
+ FALLTHROUGH;
+ case 'a':
+ if (!lookup->rdtypeset ||
+ lookup->rdtype != dns_rdatatype_axfr)
+ {
+ lookup->rdtype = dns_rdatatype_any;
+ }
+ list_type = dns_rdatatype_any;
+ list_addresses = false;
+ lookup->rdtypeset = true;
+ short_form = false;
+ default_lookups = false;
+ break;
+ case 'i':
+ /* deprecated */
+ break;
+ case 'n':
+ /* deprecated */
+ break;
+ case 'm':
+ /* Handled by pre_parse_args(). */
+ break;
+ case 'w':
+ /*
+ * The timer routines are coded such that
+ * timeout==MAXINT doesn't enable the timer
+ */
+ timeout = INT_MAX;
+ break;
+ case 'W':
+ timeout = atoi(isc_commandline_argument);
+ if (timeout < 1) {
+ timeout = 1;
+ }
+ break;
+ case 'R':
+ tries = atoi(isc_commandline_argument) + 1;
+ if (tries < 2) {
+ tries = 2;
+ }
+ break;
+ case 'T':
+ lookup->tcp_mode = true;
+ lookup->tcp_mode_set = true;
+ break;
+ case 'U':
+ lookup->tcp_mode = false;
+ lookup->tcp_mode_set = true;
+ break;
+ case 'C':
+ debug("showing all SOAs");
+ lookup->rdtype = dns_rdatatype_ns;
+ lookup->rdtypeset = true;
+ lookup->rdclass = dns_rdataclass_in;
+ lookup->rdclassset = true;
+ lookup->ns_search_only = true;
+ lookup->trace_root = true;
+ lookup->identify_previous_line = true;
+ default_lookups = false;
+ break;
+ case 'N':
+ debug("setting NDOTS to %s", isc_commandline_argument);
+ ndots = atoi(isc_commandline_argument);
+ break;
+ case 'D':
+ /* Handled by pre_parse_args(). */
+ break;
+ case '4':
+ /* Handled by pre_parse_args(). */
+ break;
+ case '6':
+ /* Handled by pre_parse_args(). */
+ break;
+ case 's':
+ lookup->servfail_stops = true;
+ break;
+ case 'p':
+ port = atoi(isc_commandline_argument);
+ break;
+ }
+ }
+
+ lookup->retries = tries;
+
+ if (isc_commandline_index >= argc) {
+ show_usage();
+ }
+
+ strlcpy(hostname, argv[isc_commandline_index], sizeof(hostname));
+
+ if (argc > isc_commandline_index + 1) {
+ set_nameserver(argv[isc_commandline_index + 1]);
+ debug("server is %s", argv[isc_commandline_index + 1]);
+ listed_server = true;
+ } else {
+ check_ra = true;
+ }
+
+ lookup->pending = false;
+ if (get_reverse(store, sizeof(store), hostname, true) == ISC_R_SUCCESS)
+ {
+ strlcpy(lookup->textname, store, sizeof(lookup->textname));
+ lookup->rdtype = dns_rdatatype_ptr;
+ lookup->rdtypeset = true;
+ default_lookups = false;
+ } else {
+ strlcpy(lookup->textname, hostname, sizeof(lookup->textname));
+ usesearch = true;
+ }
+ lookup->new_search = true;
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+}
+
+int
+main(int argc, char **argv) {
+ isc_result_t result;
+
+ tries = 2;
+
+ ISC_LIST_INIT(lookup_list);
+ ISC_LIST_INIT(server_list);
+ ISC_LIST_INIT(search_list);
+
+ fatalexit = 1;
+
+ /* setup dighost callbacks */
+ dighost_printmessage = printmessage;
+ dighost_received = received;
+ dighost_trying = trying;
+ dighost_shutdown = host_shutdown;
+
+ debug("main()");
+ progname = argv[0];
+ pre_parse_args(argc, argv);
+ result = isc_app_start();
+ check_result(result, "isc_app_start");
+ setup_libs();
+ setup_system(ipv4only, ipv6only);
+ parse_args(false, argc, argv);
+ if (keyfile[0] != 0) {
+ setup_file_key();
+ } else if (keysecret[0] != 0) {
+ setup_text_key();
+ }
+ result = isc_app_onrun(mctx, global_task, onrun_callback, NULL);
+ check_result(result, "isc_app_onrun");
+ isc_app_run();
+ cancel_all();
+ destroy_libs();
+ isc_app_finish();
+ return ((seen_error == 0) ? 0 : 1);
+}
diff --git a/bin/dig/host.rst b/bin/dig/host.rst
new file mode 100644
index 0000000..8e855c3
--- /dev/null
+++ b/bin/dig/host.rst
@@ -0,0 +1,171 @@
+.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+..
+.. SPDX-License-Identifier: MPL-2.0
+..
+.. This Source Code Form is subject to the terms of the Mozilla Public
+.. License, v. 2.0. If a copy of the MPL was not distributed with this
+.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
+..
+.. See the COPYRIGHT file distributed with this work for additional
+.. information regarding copyright ownership.
+
+.. highlight: console
+
+.. _man_host:
+
+host - DNS lookup utility
+-------------------------
+
+Synopsis
+~~~~~~~~
+
+:program:`host` [**-aACdlnrsTUwv**] [**-c** class] [**-N** ndots] [**-p** port] [**-R** number] [**-t** type] [**-W** wait] [**-m** flag] [ [**-4**] | [**-6**] ] [**-v**] [**-V**] {name} [server]
+
+Description
+~~~~~~~~~~~
+
+``host`` is a simple utility for performing DNS lookups. It is normally
+used to convert names to IP addresses and vice versa. When no arguments
+or options are given, ``host`` prints a short summary of its
+command-line arguments and options.
+
+``name`` is the domain name that is to be looked up. It can also be a
+dotted-decimal IPv4 address or a colon-delimited IPv6 address, in which
+case ``host`` by default performs a reverse lookup for that address.
+``server`` is an optional argument which is either the name or IP
+address of the name server that ``host`` should query instead of the
+server or servers listed in ``/etc/resolv.conf``.
+
+Options
+~~~~~~~
+
+``-4``
+ This option specifies that only IPv4 should be used for query transport. See also the ``-6`` option.
+
+``-6``
+ This option specifies that only IPv6 should be used for query transport. See also the ``-4`` option.
+
+``-a``
+ The ``-a`` ("all") option is normally equivalent to ``-v -t ANY``. It
+ also affects the behavior of the ``-l`` list zone option.
+
+``-A``
+ The ``-A`` ("almost all") option is equivalent to ``-a``, except that RRSIG,
+ NSEC, and NSEC3 records are omitted from the output.
+
+``-c class``
+ This option specifies the query class, which can be used to lookup HS (Hesiod) or CH (Chaosnet)
+ class resource records. The default class is IN (Internet).
+
+``-C``
+ This option indicates that ``named`` should check consistency, meaning that ``host`` queries the SOA records for zone
+ ``name`` from all the listed authoritative name servers for that
+ zone. The list of name servers is defined by the NS records that are
+ found for the zone.
+
+``-d``
+ This option prints debugging traces, and is equivalent to the ``-v`` verbose option.
+
+``-l``
+ This option tells ``named`` to list the zone, meaning the ``host`` command performs a zone transfer of zone
+ ``name`` and prints out the NS, PTR, and address records (A/AAAA).
+
+ Together, the ``-l -a`` options print all records in the zone.
+
+``-N ndots``
+ This option specifies the number of dots (``ndots``) that have to be in ``name`` for it to be
+ considered absolute. The default value is that defined using the
+ ``ndots`` statement in ``/etc/resolv.conf``, or 1 if no ``ndots`` statement
+ is present. Names with fewer dots are interpreted as relative names,
+ and are searched for in the domains listed in the ``search`` or
+ ``domain`` directive in ``/etc/resolv.conf``.
+
+``-p port``
+ This option specifies the port to query on the server. The default is 53.
+
+``-r``
+ This option specifies a non-recursive query; setting this option clears the RD (recursion
+ desired) bit in the query. This means that the name server
+ receiving the query does not attempt to resolve ``name``. The ``-r``
+ option enables ``host`` to mimic the behavior of a name server by
+ making non-recursive queries, and expecting to receive answers to
+ those queries that can be referrals to other name servers.
+
+``-R number``
+ This option specifies the number of retries for UDP queries. If ``number`` is negative or zero,
+ the number of retries is silently set to 1. The default value is 1, or
+ the value of the ``attempts`` option in ``/etc/resolv.conf``, if set.
+
+``-s``
+ This option tells ``named`` *not* to send the query to the next nameserver if any server responds
+ with a SERVFAIL response, which is the reverse of normal stub
+ resolver behavior.
+
+``-t type``
+ This option specifies the query type. The ``type`` argument can be any recognized query type:
+ CNAME, NS, SOA, TXT, DNSKEY, AXFR, etc.
+
+ When no query type is specified, ``host`` automatically selects an
+ appropriate query type. By default, it looks for A, AAAA, and MX
+ records. If the ``-C`` option is given, queries are made for SOA
+ records. If ``name`` is a dotted-decimal IPv4 address or
+ colon-delimited IPv6 address, ``host`` queries for PTR records.
+
+ If a query type of IXFR is chosen, the starting serial number can be
+ specified by appending an equals sign (=), followed by the starting serial
+ number, e.g., ``-t IXFR=12345678``.
+
+``-T``; ``-U``
+ This option specifies TCP or UDP. By default, ``host`` uses UDP when making queries; the
+ ``-T`` option makes it use a TCP connection when querying the name
+ server. TCP is automatically selected for queries that require
+ it, such as zone transfer (AXFR) requests. Type ``ANY`` queries default
+ to TCP, but can be forced to use UDP initially via ``-U``.
+
+``-m flag``
+ This option sets memory usage debugging: the flag can be ``record``, ``usage``, or
+ ``trace``. The ``-m`` option can be specified more than once to set
+ multiple flags.
+
+``-v``
+ This option sets verbose output, and is equivalent to the ``-d`` debug option. Verbose output
+ can also be enabled by setting the ``debug`` option in
+ ``/etc/resolv.conf``.
+
+``-V``
+ This option prints the version number and exits.
+
+``-w``
+ This option sets "wait forever": the query timeout is set to the maximum possible. See
+ also the ``-W`` option.
+
+``-W wait``
+ This options sets the length of the wait timeout, indicating that ``named`` should wait for up to ``wait`` seconds for a reply. If ``wait`` is
+ less than 1, the wait interval is set to 1 second.
+
+ By default, ``host`` waits for 5 seconds for UDP responses and 10
+ seconds for TCP connections. These defaults can be overridden by the
+ ``timeout`` option in ``/etc/resolv.conf``.
+
+ See also the ``-w`` option.
+
+IDN Support
+~~~~~~~~~~~
+
+If ``host`` has been built with IDN (internationalized domain name)
+support, it can accept and display non-ASCII domain names. ``host``
+appropriately converts character encoding of a domain name before sending
+a request to a DNS server or displaying a reply from the server.
+To turn off IDN support, define the ``IDN_DISABLE``
+environment variable. IDN support is disabled if the variable is set
+when ``host`` runs.
+
+Files
+~~~~~
+
+``/etc/resolv.conf``
+
+See Also
+~~~~~~~~
+
+:manpage:`dig(1)`, :manpage:`named(8)`.
diff --git a/bin/dig/include/.clang-format b/bin/dig/include/.clang-format
new file mode 120000
index 0000000..0e62f72
--- /dev/null
+++ b/bin/dig/include/.clang-format
@@ -0,0 +1 @@
+../../../.clang-format.headers \ No newline at end of file
diff --git a/bin/dig/include/dig/dig.h b/bin/dig/include/dig/dig.h
new file mode 100644
index 0000000..8bf9613
--- /dev/null
+++ b/bin/dig/include/dig/dig.h
@@ -0,0 +1,425 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#ifndef DIG_H
+#define DIG_H
+
+/*! \file */
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <isc/buffer.h>
+#include <isc/bufferlist.h>
+#include <isc/formatcheck.h>
+#include <isc/lang.h>
+#include <isc/list.h>
+#include <isc/magic.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/sockaddr.h>
+#include <isc/socket.h>
+
+#include <dns/rdatalist.h>
+
+#include <dst/dst.h>
+
+#ifdef __APPLE__
+#include <TargetConditionals.h>
+#endif /* ifdef __APPLE__ */
+
+#define MXSERV 20
+#define MXNAME (DNS_NAME_MAXTEXT + 1)
+#define MXRD 32
+/*% Buffer Size */
+#define BUFSIZE 512
+#define COMMSIZE 0xffff
+#ifndef RESOLV_CONF
+/*% location of resolve.conf */
+#define RESOLV_CONF "/etc/resolv.conf"
+#endif /* ifndef RESOLV_CONF */
+/*% output buffer */
+#define OUTPUTBUF 32767
+/*% Max RR Limit */
+#define MAXRRLIMIT 0xffffffff
+#define MAXTIMEOUT 0xffff
+/*% Max number of tries */
+#define MAXTRIES 0xffffffff
+/*% Max number of dots */
+#define MAXNDOTS 0xffff
+/*% Max number of ports */
+#define MAXPORT 0xffff
+/*% Max serial number */
+#define MAXSERIAL 0xffffffff
+
+/*% Default TCP Timeout */
+#define TCP_TIMEOUT 10
+/*% Default UDP Timeout */
+#define UDP_TIMEOUT 5
+
+#define SERVER_TIMEOUT 1
+
+#define LOOKUP_LIMIT 64
+
+#define DEFAULT_EDNS_VERSION 0
+#define DEFAULT_EDNS_BUFSIZE 4096
+
+/*%
+ * Lookup_limit is just a limiter, keeping too many lookups from being
+ * created. It's job is mainly to prevent the program from running away
+ * in a tight loop of constant lookups. It's value is arbitrary.
+ */
+
+ISC_LANG_BEGINDECLS
+
+typedef struct dig_lookup dig_lookup_t;
+typedef struct dig_query dig_query_t;
+typedef struct dig_server dig_server_t;
+typedef ISC_LIST(dig_server_t) dig_serverlist_t;
+typedef struct dig_searchlist dig_searchlist_t;
+
+#define DIG_QUERY_MAGIC ISC_MAGIC('D', 'i', 'g', 'q')
+
+#define DIG_VALID_QUERY(x) ISC_MAGIC_VALID((x), DIG_QUERY_MAGIC)
+
+/*% The dig_lookup structure */
+struct dig_lookup {
+ bool pending, /*%< Pending a successful answer */
+ waiting_connect, doing_xfr, ns_search_only, /*%< dig
+ * +nssearch,
+ * host -C */
+ identify, /*%< Append an "on server <foo>" message */
+ identify_previous_line, /*% Prepend a "Nameserver <foo>:"
+ * message, with newline and tab */
+ ignore, recurse, aaonly, adflag, cdflag, raflag, tcflag, zflag,
+ trace, /*% dig +trace */
+ trace_root, /*% initial query for either +trace or +nssearch
+ * */
+ tcp_mode, tcp_mode_set, comments, stats, section_question,
+ section_answer, section_authority, section_additional,
+ servfail_stops, new_search, need_search, done_as_is, besteffort,
+ dnssec, expire, sendcookie, seenbadcookie, badcookie,
+ nsid, /*% Name Server ID (RFC 5001) */
+ tcp_keepalive, header_only, ednsneg, mapped,
+ print_unknown_format, multiline, nottl, noclass, onesoa,
+ use_usec, nocrypto, ttlunits, idnin, idnout, expandaaaa, qr,
+ accept_reply_unexpected_src; /*% print replies from
+ * unexpected
+ * sources. */
+ char textname[MXNAME]; /*% Name we're going to be
+ * looking up */
+ char cmdline[MXNAME];
+ dns_rdatatype_t rdtype;
+ dns_rdatatype_t qrdtype;
+ dns_rdataclass_t rdclass;
+ bool rdtypeset;
+ bool rdclassset;
+ char name_space[BUFSIZE];
+ char oname_space[BUFSIZE];
+ isc_buffer_t namebuf;
+ isc_buffer_t onamebuf;
+ isc_buffer_t renderbuf;
+ char *sendspace;
+ dns_name_t *name;
+ isc_interval_t interval;
+ dns_message_t *sendmsg;
+ dns_name_t *oname;
+ ISC_LINK(dig_lookup_t) link;
+ ISC_LIST(dig_query_t) q;
+ ISC_LIST(dig_query_t) connecting;
+ dig_query_t *current_query;
+ dig_serverlist_t my_server_list;
+ dig_searchlist_t *origin;
+ dig_query_t *xfr_q;
+ uint32_t retries;
+ int nsfound;
+ int16_t udpsize;
+ int16_t edns;
+ int16_t padding;
+ uint32_t ixfr_serial;
+ isc_buffer_t rdatabuf;
+ char rdatastore[MXNAME];
+ dst_context_t *tsigctx;
+ isc_buffer_t *querysig;
+ uint32_t msgcounter;
+ dns_fixedname_t fdomain;
+ isc_sockaddr_t *ecs_addr;
+ char *cookie;
+ dns_ednsopt_t *ednsopts;
+ unsigned int ednsoptscnt;
+ isc_dscp_t dscp;
+ unsigned int ednsflags;
+ dns_opcode_t opcode;
+ int rrcomments;
+ unsigned int eoferr;
+};
+
+/*% The dig_query structure */
+struct dig_query {
+ unsigned int magic;
+ dig_lookup_t *lookup;
+ bool waiting_connect, pending_free, waiting_senddone, first_pass,
+ first_soa_rcvd, second_rr_rcvd, first_repeat_rcvd, recv_made,
+ warn_id, timedout;
+ uint32_t first_rr_serial;
+ uint32_t second_rr_serial;
+ uint32_t msg_count;
+ uint32_t rr_count;
+ bool ixfr_axfr;
+ char *servname;
+ char *userarg;
+ isc_buffer_t recvbuf, lengthbuf, tmpsendbuf, sendbuf;
+ char *recvspace, *tmpsendspace, lengthspace[4];
+ isc_socket_t *sock;
+ ISC_LINK(dig_query_t) link;
+ ISC_LINK(dig_query_t) clink;
+ dig_query_t *saved_next;
+ isc_sockaddr_t sockaddr;
+ isc_time_t time_sent;
+ isc_time_t time_recv;
+ uint64_t byte_count;
+ isc_timer_t *timer;
+};
+
+struct dig_server {
+ char servername[MXNAME];
+ char userarg[MXNAME];
+ ISC_LINK(dig_server_t) link;
+};
+
+struct dig_searchlist {
+ char origin[MXNAME];
+ ISC_LINK(dig_searchlist_t) link;
+};
+
+typedef ISC_LIST(dig_searchlist_t) dig_searchlistlist_t;
+typedef ISC_LIST(dig_lookup_t) dig_lookuplist_t;
+
+/*
+ * Externals from dighost.c
+ */
+
+extern dig_lookuplist_t lookup_list;
+extern dig_serverlist_t server_list;
+extern dig_searchlistlist_t search_list;
+extern unsigned int extrabytes;
+
+extern bool check_ra, have_ipv4, have_ipv6, specified_source, usesearch,
+ showsearch, yaml;
+extern in_port_t port;
+extern unsigned int timeout;
+extern isc_mem_t *mctx;
+extern int sendcount;
+extern int ndots;
+extern int lookup_counter;
+extern int exitcode;
+extern isc_sockaddr_t bind_address;
+extern char keynametext[MXNAME];
+extern char keyfile[MXNAME];
+extern char keysecret[MXNAME];
+extern const dns_name_t *hmacname;
+extern unsigned int digestbits;
+extern dns_tsigkey_t *tsigkey;
+extern bool validated;
+extern isc_taskmgr_t *taskmgr;
+extern isc_task_t *global_task;
+extern bool free_now;
+extern bool debugging, debugtiming, memdebugging;
+extern bool keep_open;
+
+extern char *progname;
+extern int tries;
+extern int fatalexit;
+extern bool verbose;
+
+/*
+ * Routines in dighost.c.
+ */
+isc_result_t
+get_address(char *host, in_port_t myport, isc_sockaddr_t *sockaddr);
+
+int
+getaddresses(dig_lookup_t *lookup, const char *host, isc_result_t *resultp);
+
+isc_result_t
+get_reverse(char *reverse, size_t len, char *value, bool strict);
+
+ISC_PLATFORM_NORETURN_PRE void
+fatal(const char *format, ...)
+ ISC_FORMAT_PRINTF(1, 2) ISC_PLATFORM_NORETURN_POST;
+
+void
+warn(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+ISC_PLATFORM_NORETURN_PRE void
+digexit(void) ISC_PLATFORM_NORETURN_POST;
+
+void
+debug(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+void
+check_result(isc_result_t result, const char *msg);
+
+bool
+setup_lookup(dig_lookup_t *lookup);
+
+void
+destroy_lookup(dig_lookup_t *lookup);
+
+void
+do_lookup(dig_lookup_t *lookup);
+
+void
+start_lookup(void);
+
+void
+onrun_callback(isc_task_t *task, isc_event_t *event);
+
+int
+dhmain(int argc, char **argv);
+
+void
+setup_libs(void);
+
+void
+setup_system(bool ipv4only, bool ipv6only);
+
+isc_result_t
+parse_uint(uint32_t *uip, const char *value, uint32_t max, const char *desc);
+
+isc_result_t
+parse_xint(uint32_t *uip, const char *value, uint32_t max, const char *desc);
+
+isc_result_t
+parse_netprefix(isc_sockaddr_t **sap, const char *value);
+
+void
+parse_hmac(const char *hmacstr);
+
+dig_lookup_t *
+requeue_lookup(dig_lookup_t *lookold, bool servers);
+
+dig_lookup_t *
+make_empty_lookup(void);
+
+dig_lookup_t *
+clone_lookup(dig_lookup_t *lookold, bool servers);
+
+dig_server_t *
+make_server(const char *servname, const char *userarg);
+
+void
+flush_server_list(void);
+
+void
+set_nameserver(char *opt);
+
+void
+clone_server_list(dig_serverlist_t src, dig_serverlist_t *dest);
+
+void
+cancel_all(void);
+
+void
+destroy_libs(void);
+
+void
+set_search_domain(char *domain);
+
+/*
+ * Routines to be defined in dig.c, host.c, and nslookup.c. and
+ * then assigned to the appropriate function pointer
+ */
+extern isc_result_t (*dighost_printmessage)(dig_query_t *query,
+ const isc_buffer_t *msgbuf,
+ dns_message_t *msg, bool headers);
+
+/*
+ * Print an error message in the appropriate format.
+ */
+extern void (*dighost_error)(const char *format, ...);
+
+/*
+ * Print a warning message in the appropriate format.
+ */
+extern void (*dighost_warning)(const char *format, ...);
+
+/*
+ * Print a comment in the appropriate format.
+ */
+extern void (*dighost_comments)(dig_lookup_t *lookup, const char *format, ...);
+
+/*%<
+ * Print the final result of the lookup.
+ */
+
+extern void (*dighost_received)(unsigned int bytes, isc_sockaddr_t *from,
+ dig_query_t *query);
+/*%<
+ * Print a message about where and when the response
+ * was received from, like the final comment in the
+ * output of "dig".
+ */
+
+extern void (*dighost_trying)(char *frm, dig_lookup_t *lookup);
+
+extern void (*dighost_shutdown)(void);
+
+extern void (*dighost_pre_exit_hook)(void);
+
+void
+save_opt(dig_lookup_t *lookup, char *code, char *value);
+
+void
+setup_file_key(void);
+void
+setup_text_key(void);
+
+/*
+ * Routines exported from dig.c for use by dig for iOS
+ */
+
+/*%<
+ * Call once only to set up libraries, parse global
+ * parameters and initial command line query parameters
+ */
+void
+dig_setup(int argc, char **argv);
+
+/*%<
+ * Call to supply new parameters for the next lookup
+ */
+void
+dig_query_setup(bool, bool, int argc, char **argv);
+
+/*%<
+ * set the main application event cycle running
+ */
+void
+dig_startup(void);
+
+/*%<
+ * Initiates the next lookup cycle
+ */
+void
+dig_query_start(void);
+
+/*%<
+ * Cleans up the application
+ */
+void
+dig_shutdown(void);
+
+ISC_LANG_ENDDECLS
+
+#endif /* ifndef DIG_H */
diff --git a/bin/dig/nslookup.c b/bin/dig/nslookup.c
new file mode 100644
index 0000000..0fa691d
--- /dev/null
+++ b/bin/dig/nslookup.c
@@ -0,0 +1,1047 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <isc/app.h>
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/event.h>
+#include <isc/netaddr.h>
+#include <isc/parseint.h>
+#include <isc/print.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/util.h>
+
+#include <dns/byaddr.h>
+#include <dns/fixedname.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+
+#include <dig/dig.h>
+
+#if defined(HAVE_READLINE)
+#if defined(HAVE_EDIT_READLINE_READLINE_H)
+#include <edit/readline/readline.h>
+#if defined(HAVE_EDIT_READLINE_HISTORY_H)
+#include <edit/readline/history.h>
+#endif /* if defined(HAVE_EDIT_READLINE_HISTORY_H) */
+#elif defined(HAVE_EDITLINE_READLINE_H)
+#include <editline/readline.h>
+#elif defined(HAVE_READLINE_READLINE_H)
+/* Prevent deprecated functions being declared. */
+#define _FUNCTION_DEF 1
+/* Ensure rl_message() gets prototype. */
+#define USE_VARARGS 1
+#define PREFER_STDARG 1
+#include <readline/readline.h>
+#if defined(HAVE_READLINE_HISTORY_H)
+#include <readline/history.h>
+#endif /* if defined(HAVE_READLINE_HISTORY_H) */
+#endif /* if defined(HAVE_EDIT_READLINE_READLINE_H) */
+#endif /* if defined(HAVE_READLINE) */
+
+static bool short_form = true, tcpmode = false, tcpmode_set = false,
+ identify = false, stats = true, comments = true,
+ section_question = true, section_answer = true,
+ section_authority = true, section_additional = true, recurse = true,
+ aaonly = false, nofail = true, default_lookups = true,
+ a_noanswer = false;
+
+static bool interactive;
+
+static bool in_use = false;
+static char defclass[MXRD] = "IN";
+static char deftype[MXRD] = "A";
+static isc_event_t *global_event = NULL;
+static int query_error = 1, print_error = 0;
+
+static char domainopt[DNS_NAME_MAXTEXT];
+
+static const char *rcodetext[] = { "NOERROR", "FORMERR", "SERVFAIL",
+ "NXDOMAIN", "NOTIMP", "REFUSED",
+ "YXDOMAIN", "YXRRSET", "NXRRSET",
+ "NOTAUTH", "NOTZONE", "RESERVED11",
+ "RESERVED12", "RESERVED13", "RESERVED14",
+ "RESERVED15", "BADVERS" };
+
+static const char *rtypetext[] = {
+ "rtype_0 = ", /* 0 */
+ "internet address = ", /* 1 */
+ "nameserver = ", /* 2 */
+ "md = ", /* 3 */
+ "mf = ", /* 4 */
+ "canonical name = ", /* 5 */
+ "soa = ", /* 6 */
+ "mb = ", /* 7 */
+ "mg = ", /* 8 */
+ "mr = ", /* 9 */
+ "rtype_10 = ", /* 10 */
+ "protocol = ", /* 11 */
+ "name = ", /* 12 */
+ "hinfo = ", /* 13 */
+ "minfo = ", /* 14 */
+ "mail exchanger = ", /* 15 */
+ "text = ", /* 16 */
+ "rp = ", /* 17 */
+ "afsdb = ", /* 18 */
+ "x25 address = ", /* 19 */
+ "isdn address = ", /* 20 */
+ "rt = ", /* 21 */
+ "nsap = ", /* 22 */
+ "nsap_ptr = ", /* 23 */
+ "signature = ", /* 24 */
+ "key = ", /* 25 */
+ "px = ", /* 26 */
+ "gpos = ", /* 27 */
+ "has AAAA address ", /* 28 */
+ "loc = ", /* 29 */
+ "next = ", /* 30 */
+ "rtype_31 = ", /* 31 */
+ "rtype_32 = ", /* 32 */
+ "service = ", /* 33 */
+ "rtype_34 = ", /* 34 */
+ "naptr = ", /* 35 */
+ "kx = ", /* 36 */
+ "cert = ", /* 37 */
+ "v6 address = ", /* 38 */
+ "dname = ", /* 39 */
+ "rtype_40 = ", /* 40 */
+ "optional = " /* 41 */
+};
+
+#define N_KNOWN_RRTYPES (sizeof(rtypetext) / sizeof(rtypetext[0]))
+
+static void
+flush_lookup_list(void);
+static void
+getinput(isc_task_t *task, isc_event_t *event);
+
+static char *
+rcode_totext(dns_rcode_t rcode) {
+ static char buf[sizeof("?65535")];
+ union {
+ const char *consttext;
+ char *deconsttext;
+ } totext;
+
+ if (rcode >= (sizeof(rcodetext) / sizeof(rcodetext[0]))) {
+ snprintf(buf, sizeof(buf), "?%u", rcode);
+ totext.deconsttext = buf;
+ } else {
+ totext.consttext = rcodetext[rcode];
+ }
+ return (totext.deconsttext);
+}
+
+static void
+query_finished(void) {
+ isc_event_t *event = global_event;
+
+ flush_lookup_list();
+ debug("dighost_shutdown()");
+
+ if (!in_use) {
+ isc_app_shutdown();
+ return;
+ }
+
+ isc_task_send(global_task, &event);
+}
+
+static void
+printsoa(dns_rdata_t *rdata) {
+ dns_rdata_soa_t soa;
+ isc_result_t result;
+ char namebuf[DNS_NAME_FORMATSIZE];
+
+ result = dns_rdata_tostruct(rdata, &soa, NULL);
+ check_result(result, "dns_rdata_tostruct");
+
+ dns_name_format(&soa.origin, namebuf, sizeof(namebuf));
+ printf("\torigin = %s\n", namebuf);
+ dns_name_format(&soa.contact, namebuf, sizeof(namebuf));
+ printf("\tmail addr = %s\n", namebuf);
+ printf("\tserial = %u\n", soa.serial);
+ printf("\trefresh = %u\n", soa.refresh);
+ printf("\tretry = %u\n", soa.retry);
+ printf("\texpire = %u\n", soa.expire);
+ printf("\tminimum = %u\n", soa.minimum);
+ dns_rdata_freestruct(&soa);
+}
+
+static void
+printaddr(dns_rdata_t *rdata) {
+ isc_result_t result;
+ char text[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")];
+ isc_buffer_t b;
+
+ isc_buffer_init(&b, text, sizeof(text));
+ result = dns_rdata_totext(rdata, NULL, &b);
+ check_result(result, "dns_rdata_totext");
+ printf("Address: %.*s\n", (int)isc_buffer_usedlength(&b),
+ (char *)isc_buffer_base(&b));
+}
+
+static void
+printrdata(dns_rdata_t *rdata) {
+ isc_result_t result;
+ isc_buffer_t *b = NULL;
+ unsigned int size = 1024;
+ bool done = false;
+
+ if (rdata->type < N_KNOWN_RRTYPES) {
+ printf("%s", rtypetext[rdata->type]);
+ } else {
+ printf("rdata_%d = ", rdata->type);
+ }
+
+ while (!done) {
+ isc_buffer_allocate(mctx, &b, size);
+ result = dns_rdata_totext(rdata, NULL, b);
+ if (result == ISC_R_SUCCESS) {
+ printf("%.*s\n", (int)isc_buffer_usedlength(b),
+ (char *)isc_buffer_base(b));
+ done = true;
+ } else if (result != ISC_R_NOSPACE) {
+ check_result(result, "dns_rdata_totext");
+ }
+ isc_buffer_free(&b);
+ size *= 2;
+ }
+}
+
+static isc_result_t
+printsection(dig_query_t *query, dns_message_t *msg, bool headers,
+ dns_section_t section) {
+ isc_result_t result, loopresult;
+ dns_name_t *name;
+ dns_rdataset_t *rdataset = NULL;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ char namebuf[DNS_NAME_FORMATSIZE];
+
+ UNUSED(query);
+ UNUSED(headers);
+
+ debug("printsection()");
+
+ result = dns_message_firstname(msg, section);
+ if (result == ISC_R_NOMORE) {
+ return (ISC_R_SUCCESS);
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ for (;;) {
+ name = NULL;
+ dns_message_currentname(msg, section, &name);
+ for (rdataset = ISC_LIST_HEAD(name->list); rdataset != NULL;
+ rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ loopresult = dns_rdataset_first(rdataset);
+ while (loopresult == ISC_R_SUCCESS) {
+ dns_rdataset_current(rdataset, &rdata);
+ switch (rdata.type) {
+ case dns_rdatatype_a:
+ case dns_rdatatype_aaaa:
+ if (section != DNS_SECTION_ANSWER) {
+ goto def_short_section;
+ }
+ dns_name_format(name, namebuf,
+ sizeof(namebuf));
+ printf("Name:\t%s\n", namebuf);
+ printaddr(&rdata);
+ break;
+ case dns_rdatatype_soa:
+ dns_name_format(name, namebuf,
+ sizeof(namebuf));
+ printf("%s\n", namebuf);
+ printsoa(&rdata);
+ break;
+ default:
+ def_short_section:
+ dns_name_format(name, namebuf,
+ sizeof(namebuf));
+ printf("%s\t", namebuf);
+ printrdata(&rdata);
+ break;
+ }
+ dns_rdata_reset(&rdata);
+ loopresult = dns_rdataset_next(rdataset);
+ }
+ }
+ result = dns_message_nextname(msg, section);
+ if (result == ISC_R_NOMORE) {
+ break;
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+detailsection(dig_query_t *query, dns_message_t *msg, bool headers,
+ dns_section_t section) {
+ isc_result_t result, loopresult;
+ dns_name_t *name;
+ dns_rdataset_t *rdataset = NULL;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ char namebuf[DNS_NAME_FORMATSIZE];
+
+ UNUSED(query);
+
+ debug("detailsection()");
+
+ if (headers) {
+ switch (section) {
+ case DNS_SECTION_QUESTION:
+ puts(" QUESTIONS:");
+ break;
+ case DNS_SECTION_ANSWER:
+ puts(" ANSWERS:");
+ break;
+ case DNS_SECTION_AUTHORITY:
+ puts(" AUTHORITY RECORDS:");
+ break;
+ case DNS_SECTION_ADDITIONAL:
+ puts(" ADDITIONAL RECORDS:");
+ break;
+ }
+ }
+
+ result = dns_message_firstname(msg, section);
+ if (result == ISC_R_NOMORE) {
+ return (ISC_R_SUCCESS);
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ for (;;) {
+ name = NULL;
+ dns_message_currentname(msg, section, &name);
+ for (rdataset = ISC_LIST_HEAD(name->list); rdataset != NULL;
+ rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ if (section == DNS_SECTION_QUESTION) {
+ dns_name_format(name, namebuf, sizeof(namebuf));
+ printf("\t%s, ", namebuf);
+ dns_rdatatype_format(rdataset->type, namebuf,
+ sizeof(namebuf));
+ printf("type = %s, ", namebuf);
+ dns_rdataclass_format(rdataset->rdclass,
+ namebuf, sizeof(namebuf));
+ printf("class = %s\n", namebuf);
+ }
+ loopresult = dns_rdataset_first(rdataset);
+ while (loopresult == ISC_R_SUCCESS) {
+ dns_rdataset_current(rdataset, &rdata);
+
+ dns_name_format(name, namebuf, sizeof(namebuf));
+ printf(" -> %s\n", namebuf);
+
+ switch (rdata.type) {
+ case dns_rdatatype_soa:
+ printsoa(&rdata);
+ break;
+ default:
+ printf("\t");
+ printrdata(&rdata);
+ }
+ dns_rdata_reset(&rdata);
+ printf("\tttl = %u\n", rdataset->ttl);
+ loopresult = dns_rdataset_next(rdataset);
+ }
+ }
+ result = dns_message_nextname(msg, section);
+ if (result == ISC_R_NOMORE) {
+ break;
+ } else if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static void
+received(unsigned int bytes, isc_sockaddr_t *from, dig_query_t *query) {
+ UNUSED(bytes);
+ UNUSED(from);
+ UNUSED(query);
+}
+
+static void
+trying(char *frm, dig_lookup_t *lookup) {
+ UNUSED(frm);
+ UNUSED(lookup);
+}
+
+static void
+chase_cnamechain(dns_message_t *msg, dns_name_t *qname) {
+ isc_result_t result;
+ dns_rdataset_t *rdataset;
+ dns_rdata_cname_t cname;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ unsigned int i = msg->counts[DNS_SECTION_ANSWER];
+
+ while (i-- > 0) {
+ rdataset = NULL;
+ result = dns_message_findname(msg, DNS_SECTION_ANSWER, qname,
+ dns_rdatatype_cname, 0, NULL,
+ &rdataset);
+ if (result != ISC_R_SUCCESS) {
+ return;
+ }
+ result = dns_rdataset_first(rdataset);
+ check_result(result, "dns_rdataset_first");
+ dns_rdata_reset(&rdata);
+ dns_rdataset_current(rdataset, &rdata);
+ result = dns_rdata_tostruct(&rdata, &cname, NULL);
+ check_result(result, "dns_rdata_tostruct");
+ dns_name_copynf(&cname.cname, qname);
+ dns_rdata_freestruct(&cname);
+ }
+}
+
+static isc_result_t
+printmessage(dig_query_t *query, const isc_buffer_t *msgbuf, dns_message_t *msg,
+ bool headers) {
+ char servtext[ISC_SOCKADDR_FORMATSIZE];
+
+ UNUSED(msgbuf);
+
+ /* I've we've gotten this far, we've reached a server. */
+ query_error = 0;
+
+ debug("printmessage()");
+
+ if (!default_lookups || query->lookup->rdtype == dns_rdatatype_a) {
+ isc_sockaddr_format(&query->sockaddr, servtext,
+ sizeof(servtext));
+ printf("Server:\t\t%s\n", query->userarg);
+ printf("Address:\t%s\n", servtext);
+
+ puts("");
+ }
+
+ if (!short_form) {
+ puts("------------");
+ /* detailheader(query, msg);*/
+ detailsection(query, msg, true, DNS_SECTION_QUESTION);
+ detailsection(query, msg, true, DNS_SECTION_ANSWER);
+ detailsection(query, msg, true, DNS_SECTION_AUTHORITY);
+ detailsection(query, msg, true, DNS_SECTION_ADDITIONAL);
+ puts("------------");
+ }
+
+ if (msg->rcode != 0) {
+ char nametext[DNS_NAME_FORMATSIZE];
+ dns_name_format(query->lookup->name, nametext,
+ sizeof(nametext));
+ printf("** server can't find %s: %s\n", nametext,
+ rcode_totext(msg->rcode));
+ debug("returning with rcode == 0");
+
+ /* the lookup failed */
+ print_error |= 1;
+ return (ISC_R_SUCCESS);
+ }
+
+ if (default_lookups && query->lookup->rdtype == dns_rdatatype_a) {
+ char namestr[DNS_NAME_FORMATSIZE];
+ dig_lookup_t *lookup;
+ dns_fixedname_t fixed;
+ dns_name_t *name;
+
+ /* Add AAAA lookup. */
+ name = dns_fixedname_initname(&fixed);
+ dns_name_copynf(query->lookup->name, name);
+ chase_cnamechain(msg, name);
+ dns_name_format(name, namestr, sizeof(namestr));
+ lookup = clone_lookup(query->lookup, false);
+ if (lookup != NULL) {
+ strlcpy(lookup->textname, namestr,
+ sizeof(lookup->textname));
+ lookup->rdtype = dns_rdatatype_aaaa;
+ lookup->rdtypeset = true;
+ lookup->origin = NULL;
+ lookup->retries = tries;
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+ }
+ }
+
+ if ((msg->flags & DNS_MESSAGEFLAG_AA) == 0 &&
+ (!default_lookups || query->lookup->rdtype == dns_rdatatype_a))
+ {
+ puts("Non-authoritative answer:");
+ }
+ if (!ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ANSWER])) {
+ printsection(query, msg, headers, DNS_SECTION_ANSWER);
+ } else {
+ if (default_lookups && query->lookup->rdtype == dns_rdatatype_a)
+ {
+ a_noanswer = true;
+ } else if (!default_lookups ||
+ (query->lookup->rdtype == dns_rdatatype_aaaa &&
+ a_noanswer))
+ {
+ printf("*** Can't find %s: No answer\n",
+ query->lookup->textname);
+ }
+ }
+
+ if (((msg->flags & DNS_MESSAGEFLAG_AA) == 0) &&
+ (query->lookup->rdtype != dns_rdatatype_a) &&
+ (query->lookup->rdtype != dns_rdatatype_aaaa))
+ {
+ puts("\nAuthoritative answers can be found from:");
+ printsection(query, msg, headers, DNS_SECTION_AUTHORITY);
+ printsection(query, msg, headers, DNS_SECTION_ADDITIONAL);
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static void
+show_settings(bool full, bool serv_only) {
+ dig_server_t *srv;
+ isc_sockaddr_t sockaddr;
+ dig_searchlist_t *listent;
+ isc_result_t result;
+
+ srv = ISC_LIST_HEAD(server_list);
+
+ while (srv != NULL) {
+ char sockstr[ISC_SOCKADDR_FORMATSIZE];
+
+ result = get_address(srv->servername, port, &sockaddr);
+ check_result(result, "get_address");
+
+ isc_sockaddr_format(&sockaddr, sockstr, sizeof(sockstr));
+ printf("Default server: %s\nAddress: %s\n", srv->userarg,
+ sockstr);
+ if (!full) {
+ return;
+ }
+ srv = ISC_LIST_NEXT(srv, link);
+ }
+ if (serv_only) {
+ return;
+ }
+ printf("\nSet options:\n");
+ printf(" %s\t\t\t%s\t\t%s\n", tcpmode ? "vc" : "novc",
+ short_form ? "nodebug" : "debug", debugging ? "d2" : "nod2");
+ printf(" %s\t\t%s\n", usesearch ? "search" : "nosearch",
+ recurse ? "recurse" : "norecurse");
+ printf(" timeout = %u\t\tretry = %d\tport = %u\tndots = %d\n", timeout,
+ tries, port, ndots);
+ printf(" querytype = %-8s\tclass = %s\n", deftype, defclass);
+ printf(" srchlist = ");
+ for (listent = ISC_LIST_HEAD(search_list); listent != NULL;
+ listent = ISC_LIST_NEXT(listent, link))
+ {
+ printf("%s", listent->origin);
+ if (ISC_LIST_NEXT(listent, link) != NULL) {
+ printf("/");
+ }
+ }
+ printf("\n");
+}
+
+static bool
+testtype(char *typetext) {
+ isc_result_t result;
+ isc_textregion_t tr;
+ dns_rdatatype_t rdtype;
+
+ tr.base = typetext;
+ tr.length = strlen(typetext);
+ result = dns_rdatatype_fromtext(&rdtype, &tr);
+ if (result == ISC_R_SUCCESS) {
+ return (true);
+ } else {
+ printf("unknown query type: %s\n", typetext);
+ return (false);
+ }
+}
+
+static bool
+testclass(char *typetext) {
+ isc_result_t result;
+ isc_textregion_t tr;
+ dns_rdataclass_t rdclass;
+
+ tr.base = typetext;
+ tr.length = strlen(typetext);
+ result = dns_rdataclass_fromtext(&rdclass, &tr);
+ if (result == ISC_R_SUCCESS) {
+ return (true);
+ } else {
+ printf("unknown query class: %s\n", typetext);
+ return (false);
+ }
+}
+
+static void
+set_port(const char *value) {
+ uint32_t n;
+ isc_result_t result = parse_uint(&n, value, 65535, "port");
+ if (result == ISC_R_SUCCESS) {
+ port = (uint16_t)n;
+ }
+}
+
+static void
+set_timeout(const char *value) {
+ uint32_t n;
+ isc_result_t result = parse_uint(&n, value, UINT_MAX, "timeout");
+ if (result == ISC_R_SUCCESS) {
+ timeout = n;
+ }
+}
+
+static void
+set_tries(const char *value) {
+ uint32_t n;
+ isc_result_t result = parse_uint(&n, value, INT_MAX, "tries");
+ if (result == ISC_R_SUCCESS) {
+ tries = n;
+ }
+}
+
+static void
+set_ndots(const char *value) {
+ uint32_t n;
+ isc_result_t result = parse_uint(&n, value, 128, "ndots");
+ if (result == ISC_R_SUCCESS) {
+ ndots = n;
+ }
+}
+
+static void
+version(void) {
+ fputs("nslookup " VERSION "\n", stderr);
+}
+
+static void
+setoption(char *opt) {
+ size_t l = strlen(opt);
+
+#define CHECKOPT(A, N) \
+ ((l >= N) && (l < sizeof(A)) && (strncasecmp(opt, A, l) == 0))
+
+ if (CHECKOPT("all", 3)) {
+ show_settings(true, false);
+ } else if (strncasecmp(opt, "class=", 6) == 0) {
+ if (testclass(&opt[6])) {
+ strlcpy(defclass, &opt[6], sizeof(defclass));
+ }
+ } else if (strncasecmp(opt, "cl=", 3) == 0) {
+ if (testclass(&opt[3])) {
+ strlcpy(defclass, &opt[3], sizeof(defclass));
+ }
+ } else if (strncasecmp(opt, "type=", 5) == 0) {
+ if (testtype(&opt[5])) {
+ strlcpy(deftype, &opt[5], sizeof(deftype));
+ default_lookups = false;
+ }
+ } else if (strncasecmp(opt, "ty=", 3) == 0) {
+ if (testtype(&opt[3])) {
+ strlcpy(deftype, &opt[3], sizeof(deftype));
+ default_lookups = false;
+ }
+ } else if (strncasecmp(opt, "querytype=", 10) == 0) {
+ if (testtype(&opt[10])) {
+ strlcpy(deftype, &opt[10], sizeof(deftype));
+ default_lookups = false;
+ }
+ } else if (strncasecmp(opt, "query=", 6) == 0) {
+ if (testtype(&opt[6])) {
+ strlcpy(deftype, &opt[6], sizeof(deftype));
+ default_lookups = false;
+ }
+ } else if (strncasecmp(opt, "qu=", 3) == 0) {
+ if (testtype(&opt[3])) {
+ strlcpy(deftype, &opt[3], sizeof(deftype));
+ default_lookups = false;
+ }
+ } else if (strncasecmp(opt, "q=", 2) == 0) {
+ if (testtype(&opt[2])) {
+ strlcpy(deftype, &opt[2], sizeof(deftype));
+ default_lookups = false;
+ }
+ } else if (strncasecmp(opt, "domain=", 7) == 0) {
+ strlcpy(domainopt, &opt[7], sizeof(domainopt));
+ set_search_domain(domainopt);
+ usesearch = true;
+ } else if (strncasecmp(opt, "do=", 3) == 0) {
+ strlcpy(domainopt, &opt[3], sizeof(domainopt));
+ set_search_domain(domainopt);
+ usesearch = true;
+ } else if (strncasecmp(opt, "port=", 5) == 0) {
+ set_port(&opt[5]);
+ } else if (strncasecmp(opt, "po=", 3) == 0) {
+ set_port(&opt[3]);
+ } else if (strncasecmp(opt, "timeout=", 8) == 0) {
+ set_timeout(&opt[8]);
+ } else if (strncasecmp(opt, "t=", 2) == 0) {
+ set_timeout(&opt[2]);
+ } else if (CHECKOPT("recurse", 3)) {
+ recurse = true;
+ } else if (CHECKOPT("norecurse", 5)) {
+ recurse = false;
+ } else if (strncasecmp(opt, "retry=", 6) == 0) {
+ set_tries(&opt[6]);
+ } else if (strncasecmp(opt, "ret=", 4) == 0) {
+ set_tries(&opt[4]);
+ } else if (CHECKOPT("defname", 3)) {
+ usesearch = true;
+ } else if (CHECKOPT("nodefname", 5)) {
+ usesearch = false;
+ } else if (CHECKOPT("vc", 2)) {
+ tcpmode = true;
+ tcpmode_set = true;
+ } else if (CHECKOPT("novc", 4)) {
+ tcpmode = false;
+ tcpmode_set = true;
+ } else if (CHECKOPT("debug", 3)) {
+ short_form = false;
+ showsearch = true;
+ } else if (CHECKOPT("nodebug", 5)) {
+ short_form = true;
+ showsearch = false;
+ } else if (CHECKOPT("d2", 2)) {
+ debugging = true;
+ } else if (CHECKOPT("nod2", 4)) {
+ debugging = false;
+ } else if (CHECKOPT("search", 3)) {
+ usesearch = true;
+ } else if (CHECKOPT("nosearch", 5)) {
+ usesearch = false;
+ } else if (CHECKOPT("sil", 3)) {
+ /* deprecation_msg = false; */
+ } else if (CHECKOPT("fail", 3)) {
+ nofail = false;
+ } else if (CHECKOPT("nofail", 5)) {
+ nofail = true;
+ } else if (strncasecmp(opt, "ndots=", 6) == 0) {
+ set_ndots(&opt[6]);
+ } else {
+ printf("*** Invalid option: %s\n", opt);
+ }
+}
+
+static void
+addlookup(char *opt) {
+ dig_lookup_t *lookup;
+ isc_result_t result;
+ isc_textregion_t tr;
+ dns_rdatatype_t rdtype;
+ dns_rdataclass_t rdclass;
+ char store[MXNAME];
+
+ debug("addlookup()");
+
+ a_noanswer = false;
+
+ tr.base = deftype;
+ tr.length = strlen(deftype);
+ result = dns_rdatatype_fromtext(&rdtype, &tr);
+ if (result != ISC_R_SUCCESS) {
+ printf("unknown query type: %s\n", deftype);
+ rdclass = dns_rdatatype_a;
+ }
+ tr.base = defclass;
+ tr.length = strlen(defclass);
+ result = dns_rdataclass_fromtext(&rdclass, &tr);
+ if (result != ISC_R_SUCCESS) {
+ printf("unknown query class: %s\n", defclass);
+ rdclass = dns_rdataclass_in;
+ }
+ lookup = make_empty_lookup();
+ if (get_reverse(store, sizeof(store), opt, true) == ISC_R_SUCCESS) {
+ strlcpy(lookup->textname, store, sizeof(lookup->textname));
+ lookup->rdtype = dns_rdatatype_ptr;
+ lookup->rdtypeset = true;
+ } else {
+ strlcpy(lookup->textname, opt, sizeof(lookup->textname));
+ lookup->rdtype = rdtype;
+ lookup->rdtypeset = true;
+ }
+ lookup->rdclass = rdclass;
+ lookup->rdclassset = true;
+ lookup->trace = false;
+ lookup->trace_root = lookup->trace;
+ lookup->ns_search_only = false;
+ lookup->identify = identify;
+ lookup->recurse = recurse;
+ lookup->aaonly = aaonly;
+ lookup->retries = tries;
+ lookup->comments = comments;
+ if (lookup->rdtype == dns_rdatatype_any && !tcpmode_set) {
+ lookup->tcp_mode = true;
+ } else {
+ lookup->tcp_mode = tcpmode;
+ }
+ lookup->stats = stats;
+ lookup->section_question = section_question;
+ lookup->section_answer = section_answer;
+ lookup->section_authority = section_authority;
+ lookup->section_additional = section_additional;
+ lookup->new_search = true;
+ lookup->besteffort = false;
+ if (nofail) {
+ lookup->servfail_stops = false;
+ }
+ ISC_LIST_INIT(lookup->q);
+ ISC_LINK_INIT(lookup, link);
+ ISC_LIST_APPEND(lookup_list, lookup, link);
+ lookup->origin = NULL;
+ ISC_LIST_INIT(lookup->my_server_list);
+ debug("looking up %s", lookup->textname);
+}
+
+static void
+do_next_command(char *input) {
+ char *ptr, *arg, *last;
+
+ if ((ptr = strtok_r(input, " \t\r\n", &last)) == NULL) {
+ return;
+ }
+ arg = strtok_r(NULL, " \t\r\n", &last);
+ if ((strcasecmp(ptr, "set") == 0) && (arg != NULL)) {
+ setoption(arg);
+ } else if ((strcasecmp(ptr, "server") == 0) ||
+ (strcasecmp(ptr, "lserver") == 0))
+ {
+ isc_app_block();
+ set_nameserver(arg);
+ check_ra = false;
+ isc_app_unblock();
+ show_settings(true, true);
+ } else if (strcasecmp(ptr, "exit") == 0) {
+ in_use = false;
+ } else if (strcasecmp(ptr, "help") == 0 || strcasecmp(ptr, "?") == 0) {
+ printf("The '%s' command is not yet implemented.\n", ptr);
+ } else if (strcasecmp(ptr, "finger") == 0 ||
+ strcasecmp(ptr, "root") == 0 || strcasecmp(ptr, "ls") == 0 ||
+ strcasecmp(ptr, "view") == 0)
+ {
+ printf("The '%s' command is not implemented.\n", ptr);
+ } else {
+ addlookup(ptr);
+ }
+}
+
+static void
+get_next_command(void) {
+ char *buf;
+ char *ptr;
+
+ fflush(stdout);
+ buf = isc_mem_allocate(mctx, COMMSIZE);
+ isc_app_block();
+ if (interactive) {
+#ifdef HAVE_READLINE
+ ptr = readline("> ");
+ if (ptr != NULL) {
+ add_history(ptr);
+ }
+#else /* ifdef HAVE_READLINE */
+ fputs("> ", stderr);
+ fflush(stderr);
+ ptr = fgets(buf, COMMSIZE, stdin);
+#endif /* ifdef HAVE_READLINE */
+ } else {
+ ptr = fgets(buf, COMMSIZE, stdin);
+ }
+ isc_app_unblock();
+ if (ptr == NULL) {
+ in_use = false;
+ } else {
+ do_next_command(ptr);
+ }
+#ifdef HAVE_READLINE
+ if (interactive) {
+ free(ptr);
+ }
+#endif /* ifdef HAVE_READLINE */
+ isc_mem_free(mctx, buf);
+}
+
+ISC_PLATFORM_NORETURN_PRE static void
+usage(void) ISC_PLATFORM_NORETURN_POST;
+
+static void
+usage(void) {
+ fprintf(stderr, "Usage:\n");
+ fprintf(stderr, " nslookup [-opt ...] # interactive mode "
+ "using default server\n");
+ fprintf(stderr, " nslookup [-opt ...] - server # interactive mode "
+ "using 'server'\n");
+ fprintf(stderr, " nslookup [-opt ...] host # just look up "
+ "'host' using default server\n");
+ fprintf(stderr, " nslookup [-opt ...] host server # just look up "
+ "'host' using 'server'\n");
+ exit(1);
+}
+
+static void
+parse_args(int argc, char **argv) {
+ bool have_lookup = false;
+
+ usesearch = true;
+ for (argc--, argv++; argc > 0 && argv[0] != NULL; argc--, argv++) {
+ debug("main parsing %s", argv[0]);
+ if (argv[0][0] == '-') {
+ if (strncasecmp(argv[0], "-ver", 4) == 0) {
+ version();
+ exit(0);
+ } else if (argv[0][1] != 0) {
+ setoption(&argv[0][1]);
+ } else {
+ have_lookup = true;
+ }
+ } else {
+ if (!have_lookup) {
+ have_lookup = true;
+ in_use = true;
+ addlookup(argv[0]);
+ } else {
+ if (argv[1] != NULL) {
+ usage();
+ }
+ set_nameserver(argv[0]);
+ check_ra = false;
+ }
+ }
+ }
+}
+
+static void
+flush_lookup_list(void) {
+ dig_lookup_t *l, *lp;
+ dig_query_t *q, *qp;
+ dig_server_t *s, *sp;
+
+ lookup_counter = 0;
+ l = ISC_LIST_HEAD(lookup_list);
+ while (l != NULL) {
+ q = ISC_LIST_HEAD(l->q);
+ while (q != NULL) {
+ if (q->sock != NULL) {
+ isc_socket_cancel(q->sock, NULL,
+ ISC_SOCKCANCEL_ALL);
+ isc_socket_detach(&q->sock);
+ }
+ isc_buffer_invalidate(&q->recvbuf);
+ isc_buffer_invalidate(&q->lengthbuf);
+ qp = q;
+ q = ISC_LIST_NEXT(q, link);
+ ISC_LIST_DEQUEUE(l->q, qp, link);
+ isc_mem_free(mctx, qp);
+ }
+ s = ISC_LIST_HEAD(l->my_server_list);
+ while (s != NULL) {
+ sp = s;
+ s = ISC_LIST_NEXT(s, link);
+ ISC_LIST_DEQUEUE(l->my_server_list, sp, link);
+ isc_mem_free(mctx, sp);
+ }
+ if (l->sendmsg != NULL) {
+ dns_message_detach(&l->sendmsg);
+ }
+ lp = l;
+ l = ISC_LIST_NEXT(l, link);
+ ISC_LIST_DEQUEUE(lookup_list, lp, link);
+ isc_mem_free(mctx, lp);
+ }
+}
+
+static void
+getinput(isc_task_t *task, isc_event_t *event) {
+ UNUSED(task);
+ if (global_event == NULL) {
+ global_event = event;
+ }
+ while (in_use) {
+ get_next_command();
+ if (ISC_LIST_HEAD(lookup_list) != NULL) {
+ start_lookup();
+ return;
+ }
+ }
+ isc_app_shutdown();
+}
+
+int
+main(int argc, char **argv) {
+ isc_result_t result;
+
+ interactive = isatty(0);
+
+ ISC_LIST_INIT(lookup_list);
+ ISC_LIST_INIT(server_list);
+ ISC_LIST_INIT(search_list);
+
+ check_ra = true;
+
+ /* setup dighost callbacks */
+ dighost_printmessage = printmessage;
+ dighost_received = received;
+ dighost_trying = trying;
+ dighost_shutdown = query_finished;
+
+ result = isc_app_start();
+ check_result(result, "isc_app_start");
+
+ setup_libs();
+ progname = argv[0];
+
+ setup_system(false, false);
+ parse_args(argc, argv);
+ if (keyfile[0] != 0) {
+ setup_file_key();
+ } else if (keysecret[0] != 0) {
+ setup_text_key();
+ }
+ if (domainopt[0] != '\0') {
+ set_search_domain(domainopt);
+ }
+ if (in_use) {
+ result = isc_app_onrun(mctx, global_task, onrun_callback, NULL);
+ } else {
+ result = isc_app_onrun(mctx, global_task, getinput, NULL);
+ }
+ check_result(result, "isc_app_onrun");
+ in_use = !in_use;
+
+ (void)isc_app_run();
+
+ puts("");
+ debug("done, and starting to shut down");
+ if (global_event != NULL) {
+ isc_event_free(&global_event);
+ }
+ cancel_all();
+ destroy_libs();
+ isc_app_finish();
+
+ return (query_error | print_error);
+}
diff --git a/bin/dig/nslookup.rst b/bin/dig/nslookup.rst
new file mode 100644
index 0000000..2d1e123
--- /dev/null
+++ b/bin/dig/nslookup.rst
@@ -0,0 +1,206 @@
+.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+..
+.. SPDX-License-Identifier: MPL-2.0
+..
+.. This Source Code Form is subject to the terms of the Mozilla Public
+.. License, v. 2.0. If a copy of the MPL was not distributed with this
+.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
+..
+.. See the COPYRIGHT file distributed with this work for additional
+.. information regarding copyright ownership.
+
+.. highlight: console
+
+.. _man_nslookup:
+
+nslookup - query Internet name servers interactively
+----------------------------------------------------
+
+Synopsis
+~~~~~~~~
+
+:program:`nslookup` [-option] [name | -] [server]
+
+Description
+~~~~~~~~~~~
+
+``nslookup`` is a program to query Internet domain name servers.
+``nslookup`` has two modes: interactive and non-interactive. Interactive
+mode allows the user to query name servers for information about various
+hosts and domains or to print a list of hosts in a domain.
+Non-interactive mode prints just the name and requested
+information for a host or domain.
+
+Arguments
+~~~~~~~~~
+
+Interactive mode is entered in the following cases:
+
+a. when no arguments are given (the default name server is used);
+
+b. when the first argument is a hyphen (-) and the second argument is
+ the host name or Internet address of a name server.
+
+Non-interactive mode is used when the name or Internet address of the
+host to be looked up is given as the first argument. The optional second
+argument specifies the host name or address of a name server.
+
+Options can also be specified on the command line if they precede the
+arguments and are prefixed with a hyphen. For example, to change the
+default query type to host information, with an initial timeout of 10
+seconds, type:
+
+::
+
+ nslookup -query=hinfo -timeout=10
+
+The ``-version`` option causes ``nslookup`` to print the version number
+and immediately exit.
+
+Interactive Commands
+~~~~~~~~~~~~~~~~~~~~
+
+``host [server]``
+ This command looks up information for ``host`` using the current default server or
+ using ``server``, if specified. If ``host`` is an Internet address and the
+ query type is A or PTR, the name of the host is returned. If ``host`` is
+ a name and does not have a trailing period (``.``), the search list is used
+ to qualify the name.
+
+ To look up a host not in the current domain, append a period to the
+ name.
+
+``server domain`` | ``lserver domain``
+ These commands change the default server to ``domain``; ``lserver`` uses the initial
+ server to look up information about ``domain``, while ``server`` uses the
+ current default server. If an authoritative answer cannot be found,
+ the names of servers that might have the answer are returned.
+
+``root``
+ This command is not implemented.
+
+``finger``
+ This command is not implemented.
+
+``ls``
+ This command is not implemented.
+
+``view``
+ This command is not implemented.
+
+``help``
+ This command is not implemented.
+
+``?``
+ This command is not implemented.
+
+``exit``
+ This command exits the program.
+
+``set keyword[=value]``
+ This command is used to change state information that affects the
+ lookups. Valid keywords are:
+
+ ``all``
+ This keyword prints the current values of the frequently used options to
+ ``set``. Information about the current default server and host is
+ also printed.
+
+ ``class=value``
+ This keyword changes the query class to one of:
+
+ ``IN``
+ the Internet class
+
+ ``CH``
+ the Chaos class
+
+ ``HS``
+ the Hesiod class
+
+ ``ANY``
+ wildcard
+
+ The class specifies the protocol group of the information. The default
+ is ``IN``; the abbreviation for this keyword is ``cl``.
+
+ ``nodebug``
+ This keyword turns on or off the display of the full response packet, and any
+ intermediate response packets, when searching. The default for this keyword is
+ ``nodebug``; the abbreviation for this keyword is ``[no]deb``.
+
+ ``nod2``
+ This keyword turns debugging mode on or off. This displays more about what
+ nslookup is doing. The default is ``nod2``.
+
+ ``domain=name``
+ This keyword sets the search list to ``name``.
+
+ ``nosearch``
+ If the lookup request contains at least one period, but does not end
+ with a trailing period, this keyword appends the domain names in the domain
+ search list to the request until an answer is received. The default is ``search``.
+
+ ``port=value``
+ This keyword changes the default TCP/UDP name server port to ``value`` from
+ its default, port 53. The abbreviation for this keyword is ``po``.
+
+ ``querytype=value`` | ``type=value``
+ This keyword changes the type of the information query to ``value``. The
+ defaults are A and then AAAA; the abbreviations for these keywords are
+ ``q`` and ``ty``.
+
+ Please note that it is only possible to specify one query type. Only the default
+ behavior looks up both when an alternative is not specified.
+
+ ``norecurse``
+ This keyword tells the name server to query other servers if it does not have
+ the information. The default is ``recurse``; the abbreviation for this
+ keyword is ``[no]rec``.
+
+ ``ndots=number``
+ This keyword sets the number of dots (label separators) in a domain that
+ disables searching. Absolute names always stop searching.
+
+ ``retry=number``
+ This keyword sets the number of retries to ``number``.
+
+ ``timeout=number``
+ This keyword changes the initial timeout interval to wait for a reply to
+ ``number``, in seconds.
+
+ ``novc``
+ This keyword indicates that a virtual circuit should always be used when sending requests to the server.
+ ``novc`` is the default.
+
+ ``nofail``
+ This keyword tries the next nameserver if a nameserver responds with SERVFAIL or
+ a referral (nofail), or terminates the query (fail) on such a response. The
+ default is ``nofail``.
+
+Return Values
+~~~~~~~~~~~~~
+
+``nslookup`` returns with an exit status of 1 if any query failed, and 0
+otherwise.
+
+IDN Support
+~~~~~~~~~~~
+
+If ``nslookup`` has been built with IDN (internationalized domain name)
+support, it can accept and display non-ASCII domain names. ``nslookup``
+appropriately converts character encoding of a domain name before sending
+a request to a DNS server or displaying a reply from the server.
+To turn off IDN support, define the ``IDN_DISABLE``
+environment variable. IDN support is disabled if the variable is set
+when ``nslookup`` runs, or when the standard output is not a tty.
+
+Files
+~~~~~
+
+``/etc/resolv.conf``
+
+See Also
+~~~~~~~~
+
+:manpage:`dig(1)`, :manpage:`host(1)`, :manpage:`named(8)`.
diff --git a/bin/dig/win32/dig.vcxproj.filters.in b/bin/dig/win32/dig.vcxproj.filters.in
new file mode 100644
index 0000000..1d92732
--- /dev/null
+++ b/bin/dig/win32/dig.vcxproj.filters.in
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup>
+ <Filter Include="Source Files">
+ <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+ </Filter>
+ <Filter Include="Header Files">
+ <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+ <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+ </Filter>
+ <Filter Include="Resource Files">
+ <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+ <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include="..\include\dig\dig.h">
+ <Filter>Header Files</Filter>
+ </ClInclude>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="..\dig.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ </ItemGroup>
+</Project> \ No newline at end of file
diff --git a/bin/dig/win32/dig.vcxproj.in b/bin/dig/win32/dig.vcxproj.in
new file mode 100644
index 0000000..c65a103
--- /dev/null
+++ b/bin/dig/win32/dig.vcxproj.in
@@ -0,0 +1,122 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="@TOOLS_VERSION@" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug|@PLATFORM@">
+ <Configuration>Debug</Configuration>
+ <Platform>@PLATFORM@</Platform>
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+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'" Label="Configuration">
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diff --git a/bin/dig/win32/dig.vcxproj.user b/bin/dig/win32/dig.vcxproj.user
new file mode 100644
index 0000000..ace9a86
--- /dev/null
+++ b/bin/dig/win32/dig.vcxproj.user
@@ -0,0 +1,3 @@
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+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/bin/dig/win32/dighost.vcxproj.filters.in b/bin/dig/win32/dighost.vcxproj.filters.in
new file mode 100644
index 0000000..d108bfb
--- /dev/null
+++ b/bin/dig/win32/dighost.vcxproj.filters.in
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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+ <Filter Include="Resource Files">
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+ <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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+ <ClCompile Include="..\dighost.c">
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new file mode 100644
index 0000000..1ed120c
--- /dev/null
+++ b/bin/dig/win32/dighost.vcxproj.in
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="@TOOLS_VERSION@" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+ <BrowseInformation>true</BrowseInformation>
+ <ForcedIncludeFiles>..\..\..\config.h</ForcedIncludeFiles>
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diff --git a/bin/dig/win32/dighost.vcxproj.user b/bin/dig/win32/dighost.vcxproj.user
new file mode 100644
index 0000000..ace9a86
--- /dev/null
+++ b/bin/dig/win32/dighost.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
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diff --git a/bin/dig/win32/host.vcxproj.filters.in b/bin/dig/win32/host.vcxproj.filters.in
new file mode 100644
index 0000000..56e7818
--- /dev/null
+++ b/bin/dig/win32/host.vcxproj.filters.in
@@ -0,0 +1,18 @@
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diff --git a/bin/dig/win32/host.vcxproj.in b/bin/dig/win32/host.vcxproj.in
new file mode 100644
index 0000000..091b4fb
--- /dev/null
+++ b/bin/dig/win32/host.vcxproj.in
@@ -0,0 +1,119 @@
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diff --git a/bin/dig/win32/host.vcxproj.user b/bin/dig/win32/host.vcxproj.user
new file mode 100644
index 0000000..ace9a86
--- /dev/null
+++ b/bin/dig/win32/host.vcxproj.user
@@ -0,0 +1,3 @@
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diff --git a/bin/dig/win32/nslookup.vcxproj.filters.in b/bin/dig/win32/nslookup.vcxproj.filters.in
new file mode 100644
index 0000000..7f4756e
--- /dev/null
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@@ -0,0 +1,21 @@
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+ <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="..\dighost.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ <ClCompile Include="..\nslookup.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ </ItemGroup>
+</Project> \ No newline at end of file
diff --git a/bin/dig/win32/nslookup.vcxproj.in b/bin/dig/win32/nslookup.vcxproj.in
new file mode 100644
index 0000000..565eb96
--- /dev/null
+++ b/bin/dig/win32/nslookup.vcxproj.in
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="@TOOLS_VERSION@" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+ <Configuration>Debug</Configuration>
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+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|@PLATFORM@">
+ <Configuration>Release</Configuration>
+ <Platform>@PLATFORM@</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectGuid>{C15A6E1A-94CE-4686-99F9-6BC5FD623EB5}</ProjectGuid>
+ <Keyword>Win32Proj</Keyword>
+ <RootNamespace>nslookup</RootNamespace>
+ @WINDOWS_TARGET_PLATFORM_VERSION@
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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+ <ConfigurationType>Application</ConfigurationType>
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+ <CharacterSet>MultiByte</CharacterSet>
+ @PLATFORM_TOOLSET@
+ </PropertyGroup>
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+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <CharacterSet>MultiByte</CharacterSet>
+ @PLATFORM_TOOLSET@
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
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+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
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+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
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+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+ <LinkIncremental>true</LinkIncremental>
+ <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+ <IntDir>.\$(Configuration)\</IntDir>
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+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+ <LinkIncremental>false</LinkIncremental>
+ <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+ <IntDir>.\$(Configuration)\</IntDir>
+ <IntDirSharingDetected>None</IntDirSharingDetected>
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+ <ClCompile>
+ <PrecompiledHeader>
+ </PrecompiledHeader>
+ <WarningLevel>Level4</WarningLevel>
+ <TreatWarningAsError>false</TreatWarningAsError>
+ <Optimization>Disabled</Optimization>
+ <PreprocessorDefinitions>WIN32;USE_READLINE_STATIC;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
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+ <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+ <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+ <BrowseInformation>true</BrowseInformation>
+ <ForcedIncludeFiles>..\..\..\config.h</ForcedIncludeFiles>
+ <AdditionalIncludeDirectories>.\;..\include;..\..\..\;@LIBXML2_INC@@OPENSSL_INC@@READLINE_INC@..\..\..\lib\isc\win32;..\..\..\lib\isc\win32\include;..\..\..\lib\isc\include;..\..\..\lib\isccfg\include;..\..\..\lib\irs\include;..\..\..\lib\irs\win32\include;..\..\..\lib\dns\include;..\..\..\lib\bind9\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <CompileAs>CompileAsC</CompileAs>
+ </ClCompile>
+ <Link>
+ <SubSystem>Console</SubSystem>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+ <AdditionalLibraryDirectories>..\..\..\lib\isc\win32\$(Configuration);..\..\..\lib\isccfg\win32\$(Configuration);..\..\..\lib\irs\win32\$(Configuration);..\..\..\lib\dns\win32\$(Configuration);..\..\..\lib\bind9\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>@OPENSSL_LIBCRYPTO@@OPENSSL_LIBSSL@@READLINE_LIBD@@IDN_LIB@libisc.lib;libisccfg.lib;libirs.lib;libdns.lib;libbind9.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
+ <ClCompile>
+ <WarningLevel>Level1</WarningLevel>
+ <TreatWarningAsError>true</TreatWarningAsError>
+ <PrecompiledHeader>
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+ <Optimization>MaxSpeed</Optimization>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <IntrinsicFunctions>@INTRINSIC@</IntrinsicFunctions>
+ <PreprocessorDefinitions>WIN32;USE_READLINE_STATIC;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
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+ <StringPooling>true</StringPooling>
+ <PrecompiledHeaderOutputFile>.\$(Configuration)\$(TargetName).pch</PrecompiledHeaderOutputFile>
+ <AssemblerListingLocation>.\$(Configuration)\</AssemblerListingLocation>
+ <ObjectFileName>.\$(Configuration)\</ObjectFileName>
+ <ProgramDataBaseFileName>$(OutDir)$(TargetName).pdb</ProgramDataBaseFileName>
+ <ForcedIncludeFiles>..\..\..\config.h</ForcedIncludeFiles>
+ <AdditionalIncludeDirectories>.\;..\include;..\..\..\;@LIBXML2_INC@@OPENSSL_INC@@READLINE_INC@..\..\..\lib\isc\win32;..\..\..\lib\isc\win32\include;..\..\..\lib\isc\include;..\..\..\lib\isccfg\include;..\..\..\lib\irs\include;..\..\..\lib\irs\win32\include;..\..\..\lib\dns\include;..\..\..\lib\bind9\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+ <CompileAs>CompileAsC</CompileAs>
+ </ClCompile>
+ <Link>
+ <SubSystem>Console</SubSystem>
+ <GenerateDebugInformation>false</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ <OutputFile>..\..\..\Build\$(Configuration)\$(TargetName)$(TargetExt)</OutputFile>
+ <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
+ <AdditionalLibraryDirectories>..\..\..\lib\isc\win32\$(Configuration);..\..\..\lib\isccfg\win32\$(Configuration);..\..\..\lib\irs\win32\$(Configuration);..\..\..\lib\dns\win32\$(Configuration);..\..\..\lib\bind9\win32\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>@OPENSSL_LIBCRYPTO@@OPENSSL_LIBSSL@@READLINE_LIB@@IDN_LIB@libisc.lib;libisccfg.lib;libirs.lib;libdns.lib;libbind9.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ <ClCompile Include="..\dighost.c" />
+ <ClCompile Include="..\nslookup.c" />
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
diff --git a/bin/dig/win32/nslookup.vcxproj.user b/bin/dig/win32/nslookup.vcxproj.user
new file mode 100644
index 0000000..ace9a86
--- /dev/null
+++ b/bin/dig/win32/nslookup.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+</Project> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 05:01:59 +0000