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-rw-r--r--bin/dig/host.c931
1 files changed, 931 insertions, 0 deletions
diff --git a/bin/dig/host.c b/bin/dig/host.c
new file mode 100644
index 0000000..011587a
--- /dev/null
+++ b/bin/dig/host.c
@@ -0,0 +1,931 @@
+/*
+ * 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/attributes.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 "dighost.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);
+}
+
+noreturn static void
+show_usage(void);
+
+static void
+show_usage(void) {
+ fprintf(stderr,
+ "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");
+ 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_copy(&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_copy(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) {
+ fprintf(stderr, "host %s\n", PACKAGE_VERSION);
+}
+
+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);
+ port_set = true;
+ 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);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 03:48:49 +0000