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| Current File : //usr/src/contrib/bind9/bin/dig/host.c |
/*
* Copyright (C) 2004-2007, 2009-2011 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000-2003 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: host.c,v 1.124.40.3 2011/03/11 06:46:59 marka Exp $ */
/*! \file */
#include <config.h>
#include <stdlib.h>
#include <limits.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef WITH_IDN
#include <idn/result.h>
#include <idn/log.h>
#include <idn/resconf.h>
#include <idn/api.h>
#endif
#include <isc/app.h>
#include <isc/commandline.h>
#include <isc/netaddr.h>
#include <isc/print.h>
#include <isc/string.h>
#include <isc/util.h>
#include <isc/task.h>
#include <isc/stdlib.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/rdatatype.h>
#include <dns/rdatastruct.h>
#include <dig/dig.h>
static isc_boolean_t short_form = ISC_TRUE, listed_server = ISC_FALSE;
static isc_boolean_t default_lookups = ISC_TRUE;
static int seen_error = -1;
static isc_boolean_t list_addresses = ISC_TRUE;
static dns_rdatatype_t list_type = dns_rdatatype_a;
static isc_boolean_t printed_server = ISC_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 [-aCdlriTwv] [-c class] [-N ndots] [-t type] [-W time]\n"
" [-R number] [-m flag] hostname [server]\n"
" -a is equivalent to -v -t ANY\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"
" -i IP6.INT reverse lookups\n"
" -N changes the number of dots allowed before root lookup is done\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"
" -v enables verbose output\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"
" -m set memory debugging flag (trace|record|usage)\n", stderr);
exit(1);
}
void
dighost_shutdown(void) {
isc_app_shutdown();
}
void
received(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));
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);
}
}
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:
result = isc_buffer_allocate(mctx, &b, bufsize);
check_result(result, "isc_buffer_allocate");
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);
}
#ifdef DIG_SIGCHASE
/* Just for compatibility : not use in host program */
isc_result_t
printrdataset(dns_name_t *owner_name, dns_rdataset_t *rdataset,
isc_buffer_t *target)
{
UNUSED(owner_name);
UNUSED(rdataset);
UNUSED(target);
return(ISC_FALSE);
}
#endif
static isc_result_t
printsection(dns_message_t *msg, dns_section_t sectionid,
const char *section_name, isc_boolean_t 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 t[4096];
isc_boolean_t first;
isc_boolean_t no_rdata;
if (sectionid == DNS_SECTION_QUESTION)
no_rdata = ISC_TRUE;
else
no_rdata = ISC_FALSE;
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, t, sizeof(t));
first = ISC_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 (!short_form) {
result = dns_rdataset_totext(rdataset,
print_name,
ISC_FALSE,
no_rdata,
&target);
if (result != ISC_R_SUCCESS)
return (result);
#ifdef USEINITALWS
if (first) {
print_name = &empty_name;
first = ISC_FALSE;
}
#else
UNUSED(first); /* Shut up compiler. */
#endif
} 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, dns_name_t *owner,
const char *set_name, isc_boolean_t headers)
{
isc_buffer_t target;
isc_result_t result;
isc_region_t r;
char t[4096];
UNUSED(msg);
if (headers)
printf(";; %s SECTION:\n", set_name);
isc_buffer_init(&target, t, sizeof(t));
result = dns_rdataset_totext(rdataset, owner, ISC_FALSE, ISC_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, NULL);
dns_rdata_freestruct(&cname);
}
}
isc_result_t
printmessage(dig_query_t *query, dns_message_t *msg, isc_boolean_t headers) {
isc_boolean_t did_flag = ISC_FALSE;
dns_rdataset_t *opt, *tsig = NULL;
dns_name_t *tsigname;
isc_result_t result = ISC_R_SUCCESS;
int force_error;
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 = ISC_TRUE;
}
if (msg->rcode != 0) {
char namestr[DNS_NAME_FORMATSIZE];
dns_name_format(query->lookup->name, namestr, sizeof(namestr));
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. */
dns_fixedname_init(&fixed);
name = dns_fixedname_name(&fixed);
dns_name_copy(query->lookup->name, name, NULL);
chase_cnamechain(msg, name);
dns_name_format(name, namestr, sizeof(namestr));
lookup = clone_lookup(query->lookup, ISC_FALSE);
if (lookup != NULL) {
strncpy(lookup->textname, namestr,
sizeof(lookup->textname));
lookup->textname[sizeof(lookup->textname)-1] = 0;
lookup->rdtype = dns_rdatatype_aaaa;
lookup->rdtypeset = ISC_TRUE;
lookup->origin = NULL;
lookup->retries = tries;
ISC_LIST_APPEND(lookup_list, lookup, link);
}
lookup = clone_lookup(query->lookup, ISC_FALSE);
if (lookup != NULL) {
strncpy(lookup->textname, namestr,
sizeof(lookup->textname));
lookup->textname[sizeof(lookup->textname)-1] = 0;
lookup->rdtype = dns_rdatatype_mx;
lookup->rdtypeset = ISC_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 = ISC_TRUE;
}
if ((msg->flags & DNS_MESSAGEFLAG_AA) != 0) {
printf("%saa", did_flag ? " " : "");
did_flag = ISC_TRUE;
}
if ((msg->flags & DNS_MESSAGEFLAG_TC) != 0) {
printf("%stc", did_flag ? " " : "");
did_flag = ISC_TRUE;
}
if ((msg->flags & DNS_MESSAGEFLAG_RD) != 0) {
printf("%srd", did_flag ? " " : "");
did_flag = ISC_TRUE;
}
if ((msg->flags & DNS_MESSAGEFLAG_RA) != 0) {
printf("%sra", did_flag ? " " : "");
did_flag = ISC_TRUE;
}
if ((msg->flags & DNS_MESSAGEFLAG_AD) != 0) {
printf("%sad", did_flag ? " " : "");
did_flag = ISC_TRUE;
}
if ((msg->flags & DNS_MESSAGEFLAG_CD) != 0) {
printf("%scd", did_flag ? " " : "");
did_flag = ISC_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",
ISC_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",
ISC_TF(!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",
ISC_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", ISC_TRUE, query);
if (result != ISC_R_SUCCESS)
return (result);
}
if ((tsig != NULL) && !short_form) {
printf("\n");
result = printrdata(msg, tsig, tsigname,
"PSEUDOSECTION TSIG", ISC_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 = "46ac:dilnm:rst:vwCDN:R:TW:";
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 = ISC_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': break;
case '6': break;
case 'a': break;
case 'c': break;
case 'd': break;
case 'i': break;
case 'l': break;
case 'n': break;
case 'r': break;
case 's': break;
case 't': break;
case 'v': break;
case 'w': break;
case 'C': break;
case 'D':
debugging = ISC_TRUE;
break;
case 'N': break;
case 'R': break;
case 'T': break;
case 'W': break;
default:
show_usage();
}
}
isc_commandline_reset = ISC_TRUE;
isc_commandline_index = 1;
}
static void
parse_args(isc_boolean_t 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;
isc_uint32_t serial = 0;
UNUSED(is_batchfile);
lookup = make_empty_lookup();
lookup->servfail_stops = ISC_FALSE;
lookup->comments = ISC_FALSE;
while ((c = isc_commandline_parse(argc, argv, optstring)) != -1) {
switch (c) {
case 'l':
lookup->tcp_mode = ISC_TRUE;
lookup->rdtype = dns_rdatatype_axfr;
lookup->rdtypeset = ISC_TRUE;
fatalexit = 3;
break;
case 'v':
case 'd':
short_form = ISC_FALSE;
break;
case 'r':
lookup->recurse = ISC_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 = ISC_TRUE;
#ifdef WITH_IDN
idnoptions = 0;
#endif
if (rdtype == dns_rdatatype_axfr) {
/* -l -t any -v */
list_type = dns_rdatatype_any;
short_form = ISC_FALSE;
lookup->tcp_mode = ISC_TRUE;
} else if (rdtype == dns_rdatatype_ixfr) {
lookup->ixfr_serial = serial;
lookup->tcp_mode = ISC_TRUE;
list_type = rdtype;
#ifdef WITH_IDN
} else if (rdtype == dns_rdatatype_a ||
rdtype == dns_rdatatype_aaaa ||
rdtype == dns_rdatatype_mx) {
idnoptions = IDN_ASCCHECK;
list_type = rdtype;
#endif
} else
list_type = rdtype;
list_addresses = ISC_FALSE;
default_lookups = ISC_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 = ISC_TRUE;
}
default_lookups = ISC_FALSE;
break;
case 'a':
if (!lookup->rdtypeset ||
lookup->rdtype != dns_rdatatype_axfr)
lookup->rdtype = dns_rdatatype_any;
list_type = dns_rdatatype_any;
list_addresses = ISC_FALSE;
lookup->rdtypeset = ISC_TRUE;
short_form = ISC_FALSE;
default_lookups = ISC_FALSE;
break;
case 'i':
lookup->ip6_int = ISC_TRUE;
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 = ISC_TRUE;
break;
case 'C':
debug("showing all SOAs");
lookup->rdtype = dns_rdatatype_ns;
lookup->rdtypeset = ISC_TRUE;
lookup->rdclass = dns_rdataclass_in;
lookup->rdclassset = ISC_TRUE;
lookup->ns_search_only = ISC_TRUE;
lookup->trace_root = ISC_TRUE;
lookup->identify_previous_line = ISC_TRUE;
default_lookups = ISC_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':
if (have_ipv4) {
isc_net_disableipv6();
have_ipv6 = ISC_FALSE;
} else
fatal("can't find IPv4 networking");
break;
case '6':
if (have_ipv6) {
isc_net_disableipv4();
have_ipv4 = ISC_FALSE;
} else
fatal("can't find IPv6 networking");
break;
case 's':
lookup->servfail_stops = ISC_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 = ISC_TRUE;
} else
check_ra = ISC_TRUE;
lookup->pending = ISC_FALSE;
if (get_reverse(store, sizeof(store), hostname,
lookup->ip6_int, ISC_TRUE) == ISC_R_SUCCESS) {
strncpy(lookup->textname, store, sizeof(lookup->textname));
lookup->textname[sizeof(lookup->textname)-1] = 0;
lookup->rdtype = dns_rdatatype_ptr;
lookup->rdtypeset = ISC_TRUE;
default_lookups = ISC_FALSE;
} else {
strncpy(lookup->textname, hostname, sizeof(lookup->textname));
lookup->textname[sizeof(lookup->textname)-1]=0;
usesearch = ISC_TRUE;
}
lookup->new_search = ISC_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;
#ifdef WITH_IDN
idnoptions = IDN_ASCCHECK;
#endif
debug("main()");
progname = argv[0];
pre_parse_args(argc, argv);
result = isc_app_start();
check_result(result, "isc_app_start");
setup_libs();
parse_args(ISC_FALSE, argc, argv);
setup_system();
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);
}