dig.c revision b514e0cd0e7959a98dd59665553c8a3635ada10e
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence/*
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
07dcadc6e24f4572f2b7d7cae7d47d0f5256d129Andreas Gustafsson * Copyright (C) 2000-2003 Internet Software Consortium.
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence *
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence * Permission to use, copy, modify, and distribute this software for any
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence * purpose with or without fee is hereby granted, provided that the above
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence * copyright notice and this permission notice appear in all copies.
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence *
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
dafcb997e390efa4423883dafd100c975c4095d6Mark Andrews * PERFORMANCE OF THIS SOFTWARE.
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence */
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein/* $Id: dig.c,v 1.201 2005/03/31 02:36:04 marka Exp $ */
ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein
ab023a65562e62b85a824509d829b6fad87e00b1Rob Austein#include <config.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <stdlib.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <time.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <ctype.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/app.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/netaddr.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/parseint.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/print.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/string.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/util.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <isc/task.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/byaddr.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/fixedname.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/masterdump.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/message.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/name.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/rdata.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/rdataset.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/rdatatype.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/rdataclass.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dns/result.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <bind9/getaddresses.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#include <dig/dig.h>
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrenceextern ISC_LIST(dig_lookup_t) lookup_list;
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrenceextern dig_serverlist_t server_list;
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrenceextern ISC_LIST(dig_searchlist_t) search_list;
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence#define ADD_STRING(b, s) { \
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence if (strlen(s) >= isc_buffer_availablelength(b)) \
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence return (ISC_R_NOSPACE); \
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence else \
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence isc_buffer_putstr(b, s); \
4cd765650776027d05fe7fca248478918e02e63bDavid Lawrence}
#define DIG_MAX_ADDRESSES 20
extern isc_boolean_t have_ipv4, have_ipv6, specified_source,
usesearch, qr;
extern in_port_t port;
extern unsigned int timeout;
extern isc_mem_t *mctx;
extern dns_messageid_t id;
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];
#ifdef DIG_SIGCHASE
extern char trustedkey[MXNAME];
#endif
extern dns_tsigkey_t *key;
extern isc_boolean_t validated;
extern isc_taskmgr_t *taskmgr;
extern isc_task_t *global_task;
extern isc_boolean_t free_now;
dig_lookup_t *default_lookup = NULL;
extern isc_boolean_t debugging, memdebugging;
static char *batchname = NULL;
static FILE *batchfp = NULL;
static char *argv0;
static int addresscount = 0;
static char domainopt[DNS_NAME_MAXTEXT];
static isc_boolean_t short_form = ISC_FALSE, printcmd = ISC_TRUE,
ip6_int = ISC_FALSE, plusquest = ISC_FALSE, pluscomm = ISC_FALSE,
multiline = ISC_FALSE, nottl = ISC_FALSE, noclass = 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"
};
extern char *progname;
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);
}
static void
usage(void) {
print_usage(stderr);
fputs("\nUse \"dig -h\" (or \"dig -h | more\") "
"for complete list of options\n", stderr);
exit(1);
}
static void
version(void) {
fputs("DiG " VERSION "\n", stderr);
}
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"
" -x dot-notation (shortcut for in-addr lookups)\n"
" -i (IP6.INT reverse IPv6 lookups)\n"
" -f filename (batch mode)\n"
" -b address[#port] (bind to source address/port)\n"
" -p port (specify port number)\n"
" -t type (specify query type)\n"
" -c class (specify query class)\n"
" -k keyfile (specify tsig key file)\n"
" -y name:key (specify named base64 tsig key)\n"
" -4 (use IPv4 query transport only)\n"
" -6 (use IPv6 query transport only)\n"
" d-opt is of the form +keyword[=value], where keyword is:\n"
" +[no]vc (TCP mode)\n"
" +[no]tcp (TCP mode, alternate syntax)\n"
" +time=### (Set query timeout) [5]\n"
" +tries=### (Set number of UDP attempts) [3]\n"
" +retry=### (Set number of UDP retries) [2]\n"
" +domain=### (Set default domainname)\n"
" +bufsize=### (Set EDNS0 Max UDP packet size)\n"
" +ndots=### (Set NDOTS value)\n"
" +[no]search (Set whether to use searchlist)\n"
" +[no]defname (Ditto)\n"
" +[no]recurse (Recursive mode)\n"
" +[no]ignore (Don't revert to TCP for TC responses.)"
"\n"
" +[no]fail (Don't try next server on SERVFAIL)\n"
" +[no]besteffort (Try to parse even illegal messages)\n"
" +[no]aaonly (Set AA flag in query (+[no]aaflag))\n"
" +[no]adflag (Set AD flag in query)\n"
" +[no]cdflag (Set CD flag in query)\n"
" +[no]cl (Control display of class in records)\n"
" +[no]cmd (Control display of command line)\n"
" +[no]comments (Control display of comment lines)\n"
" +[no]question (Control display of question)\n"
" +[no]answer (Control display of answer)\n"
" +[no]authority (Control display of authority)\n"
" +[no]additional (Control display of additional)\n"
" +[no]stats (Control display of statistics)\n"
" +[no]short (Disable everything except short\n"
" form of answer)\n"
" +[no]ttlid (Control display of ttls in records)\n"
" +[no]all (Set or clear all display flags)\n"
" +[no]qr (Print question before sending)\n"
" +[no]nssearch (Search all authoritative nameservers)\n"
" +[no]identify (ID responders in short answers)\n"
" +[no]trace (Trace delegation down from root)\n"
" +[no]dnssec (Request DNSSEC records)\n"
#ifdef DIG_SIGCHASE
" +[no]sigchase (Chase DNSSEC signatures)\n"
" +trusted-key=#### (Trusted Key when chasing DNSSEC sigs)\n"
#if DIG_SIGCHASE_TD
" +[no]topdown (Do DNSSEC validation top down mode)\n"
#endif
#endif
" +[no]multiline (Print records in an expanded format)\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.
*/
void
received(int bytes, isc_sockaddr_t *from, dig_query_t *query) {
isc_uint64_t diff;
isc_time_t now;
time_t tnow;
char fromtext[ISC_SOCKADDR_FORMATSIZE];
isc_sockaddr_format(from, fromtext, sizeof(fromtext));
TIME_NOW(&now);
if (query->lookup->stats && !short_form) {
diff = isc_time_microdiff(&now, &query->time_sent);
printf(";; Query time: %ld msec\n", (long int)diff/1000);
printf(";; SERVER: %s(%s)\n", fromtext, query->servname);
time(&tnow);
printf(";; WHEN: %s", ctime(&tnow));
if (query->lookup->doing_xfr) {
printf(";; XFR size: %u records (messages %u, "
"bytes %" ISC_PRINT_QUADFORMAT "u)\n",
query->rr_count, query->msg_count,
query->byte_count);
} else {
printf(";; MSG SIZE rcvd: %u\n", bytes);
}
if (key != NULL) {
if (!validated)
puts(";; WARNING -- Some TSIG could not "
"be validated");
}
if ((key == NULL) && (keysecret[0] != 0)) {
puts(";; WARNING -- TSIG key was not used.");
}
puts("");
} else if (query->lookup->identify && !short_form) {
diff = isc_time_microdiff(&now, &query->time_sent);
printf(";; Received %" ISC_PRINT_QUADFORMAT "u bytes "
"from %s(%s) in %d ms\n\n",
query->lookup->doing_xfr ?
query->byte_count : (isc_uint64_t)bytes,
fromtext, query->servname,
(int)diff/1000);
}
}
/*
* Callback from dighost.c to print that it is trying a server.
* Not used in dig.
* XXX print_trying
*/
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;
isc_uint64_t diff;
isc_time_t now;
char store[sizeof("12345678901234567890")];
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, " ");
}
result = dns_rdata_totext(rdata, NULL, buf);
check_result(result, "dns_rdata_totext");
if (query->lookup->identify) {
TIME_NOW(&now);
diff = isc_time_microdiff(&now, &query->time_sent);
ADD_STRING(buf, " from server ");
ADD_STRING(buf, query->servname);
snprintf(store, 19, " in %d ms.", (int)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_buffer_t target;
isc_result_t result, loopresult;
dns_name_t empty_name;
char t[4096];
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);
isc_buffer_init(&target, t, sizeof(t));
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);
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);
}
#ifdef DIG_SIGCHASE
isc_result_t
printrdataset(dns_name_t *owner_name, dns_rdataset_t *rdataset,
isc_buffer_t *target)
{
isc_result_t result;
dns_master_style_t *style = NULL;
unsigned int styleflags = 0;
if (rdataset == NULL || owner_name == NULL || target == NULL)
return(ISC_FALSE);
styleflags |= DNS_STYLEFLAG_REL_OWNER;
if (nottl)
styleflags |= DNS_STYLEFLAG_NO_TTL;
if (noclass)
styleflags |= DNS_STYLEFLAG_NO_CLASS;
if (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;
styleflags |= DNS_STYLEFLAG_COMMENT;
}
if (multiline || (nottl && noclass))
result = dns_master_stylecreate(&style, styleflags,
24, 24, 24, 32, 80, 8, mctx);
else if (nottl || noclass)
result = dns_master_stylecreate(&style, styleflags,
24, 24, 32, 40, 80, 8, mctx);
else
result = dns_master_stylecreate(&style, styleflags,
24, 32, 40, 48, 80, 8, mctx);
check_result(result, "dns_master_stylecreate");
result = dns_master_rdatasettotext(owner_name, rdataset, style, target);
if (style != NULL)
dns_master_styledestroy(&style, mctx);
return(result);
}
#endif
/*
* Callback from dighost.c to print the reply from a server
*/
isc_result_t
printmessage(dig_query_t *query, dns_message_t *msg, isc_boolean_t 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;
styleflags |= DNS_STYLEFLAG_REL_OWNER;
if (nottl)
styleflags |= DNS_STYLEFLAG_NO_TTL;
if (noclass)
styleflags |= DNS_STYLEFLAG_NO_CLASS;
if (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;
styleflags |= DNS_STYLEFLAG_COMMENT;
}
if (multiline || (nottl && noclass))
result = dns_master_stylecreate(&style, styleflags,
24, 24, 24, 32, 80, 8, mctx);
else if (nottl || noclass)
result = dns_master_stylecreate(&style, styleflags,
24, 24, 32, 40, 80, 8, mctx);
else
result = dns_master_stylecreate(&style, styleflags,
24, 32, 40, 48, 80, 8, mctx);
check_result(result, "dns_master_stylecreate");
if (query->lookup->cmdline[0] != 0) {
if (!short_form)
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->comments)
flags |= DNS_MESSAGETEXTFLAG_NOCOMMENTS;
result = ISC_R_SUCCESS;
result = isc_buffer_allocate(mctx, &buf, len);
check_result(result, "isc_buffer_allocate");
if (query->lookup->comments && !short_form) {
if (query->lookup->cmdline[0] != 0)
printf("; %s\n", query->lookup->cmdline);
if (msg == query->lookup->sendmsg)
printf(";; Sending:\n");
else
printf(";; Got answer:\n");
if (headers) {
printf(";; ->>HEADER<<- opcode: %s, status: %s, "
"id: %u\n",
opcodetext[msg->opcode], rcodetext[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");
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]);
}
}
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);
result = isc_buffer_allocate(mctx, &buf, len);
if (result == ISC_R_SUCCESS)
goto repopulate_buffer;
else
goto cleanup;
}
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)
printf("\n");
printf("%.*s", (int)isc_buffer_usedlength(buf),
(char *)isc_buffer_base(buf));
isc_buffer_free(&buf);
cleanup:
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;
int remaining;
static isc_boolean_t first = ISC_TRUE;
char append[MXNAME];
if (printcmd) {
lookup->cmdline[sizeof(lookup->cmdline) - 1] = 0;
snprintf(lookup->cmdline, sizeof(lookup->cmdline),
"%s; <<>> DiG " VERSION " <<>>",
first?"\n":"");
i = 1;
while (i < argc) {
snprintf(append, sizeof(append), " %s", argv[i++]);
remaining = sizeof(lookup->cmdline) -
strlen(lookup->cmdline) - 1;
strncat(lookup->cmdline, append, remaining);
}
remaining = sizeof(lookup->cmdline) -
strlen(lookup->cmdline) - 1;
strncat(lookup->cmdline, "\n", remaining);
if (first && addresscount != 0) {
snprintf(append, sizeof(append),
"; (%d server%s found)\n",
addresscount,
addresscount > 1 ? "s" : "");
remaining = sizeof(lookup->cmdline) -
strlen(lookup->cmdline) - 1;
strncat(lookup->cmdline, append, remaining);
}
if (first) {
snprintf(append, sizeof(append),
";; global options: %s %s\n",
short_form ? "short_form" : "",
printcmd ? "printcmd" : "");
first = ISC_FALSE;
remaining = sizeof(lookup->cmdline) -
strlen(lookup->cmdline) - 1;
strncat(lookup->cmdline, append, remaining);
}
}
}
/*
* Reorder an argument list so that server names all come at the end.
* This is a bit of a hack, to allow batch-mode processing to properly
* handle the server options.
*/
static void
reorder_args(int argc, char *argv[]) {
int i, j;
char *ptr;
int end;
debug("reorder_args()");
end = argc - 1;
while (argv[end][0] == '@') {
end--;
if (end == 0)
return;
}
debug("arg[end]=%s", argv[end]);
for (i = 1; i < end - 1; i++) {
if (argv[i][0] == '@') {
debug("arg[%d]=%s", i, argv[i]);
ptr = argv[i];
for (j = i + 1; j < end; j++) {
debug("Moving %s to %d", argv[j], j - 1);
argv[j - 1] = argv[j];
}
debug("moving %s to end, %d", ptr, end - 1);
argv[end - 1] = ptr;
end--;
if (end < 1)
return;
}
}
}
static isc_uint32_t
parse_uint(char *arg, const char *desc, isc_uint32_t max) {
isc_result_t result;
isc_uint32_t tmp;
result = isc_parse_uint32(&tmp, arg, 10);
if (result == ISC_R_SUCCESS && tmp > max)
result = ISC_R_RANGE;
if (result != ISC_R_SUCCESS)
fatal("%s '%s': %s", desc, arg, isc_result_totext(result));
return (tmp);
}
/*
* 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, isc_boolean_t is_batchfile,
dig_lookup_t *lookup)
{
char option_store[256];
char *cmd, *value, *ptr;
isc_boolean_t state = ISC_TRUE;
#ifdef DIG_SIGCHASE
size_t n;
#endif
strncpy(option_store, option, sizeof(option_store));
option_store[sizeof(option_store)-1]=0;
ptr = option_store;
cmd = next_token(&ptr,"=");
if (cmd == NULL) {
printf(";; Invalid option %s\n", option_store);
return;
}
value = ptr;
if (strncasecmp(cmd, "no", 2)==0) {
cmd += 2;
state = ISC_FALSE;
}
#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 */
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 'e':/* besteffort */
FULLCHECK("besteffort");
lookup->besteffort = state;
break;
case 'u':/* bufsize */
FULLCHECK("bufsize");
if (value == NULL)
goto need_value;
if (!state)
goto invalid_option;
lookup->udpsize = (isc_uint16_t) parse_uint(value,
"buffer size", COMMSIZE);
break;
default:
goto invalid_option;
}
break;
case 'c':
switch (cmd[1]) {
case 'd':/* cdflag */
FULLCHECK("cdflag");
lookup->cdflag = state;
break;
case 'l': /* cl */
FULLCHECK("cl");
noclass = !state;
break;
case 'm': /* cmd */
FULLCHECK("cmd");
printcmd = state;
break;
case 'o': /* comments */
FULLCHECK("comments");
lookup->comments = state;
if (lookup == default_lookup)
pluscomm = state;
break;
default:
goto invalid_option;
}
break;
case 'd':
switch (cmd[1]) {
case 'e': /* defname */
FULLCHECK("defname");
usesearch = state;
break;
case 'n': /* dnssec */
FULLCHECK("dnssec");
lookup->dnssec = state;
break;
case 'o': /* domain */
FULLCHECK("domain");
if (value == NULL)
goto need_value;
if (!state)
goto invalid_option;
strncpy(domainopt, value, sizeof(domainopt));
domainopt[sizeof(domainopt)-1] = '\0';
break;
default:
goto invalid_option;
}
break;
case 'f': /* fail */
FULLCHECK("fail");
lookup->servfail_stops = state;
break;
case 'i':
switch (cmd[1]) {
case 'd': /* identify */
FULLCHECK("identify");
lookup->identify = state;
break;
case 'g': /* ignore */
default: /* Inherets default for compatibility */
FULLCHECK("ignore");
lookup->ignore = ISC_TRUE;
}
break;
case 'm': /* multiline */
FULLCHECK("multiline");
multiline = state;
break;
case 'n':
switch (cmd[1]) {
case 'd': /* ndots */
FULLCHECK("ndots");
if (value == NULL)
goto need_value;
if (!state)
goto invalid_option;
ndots = parse_uint(value, "ndots", MAXNDOTS);
break;
case 's': /* nssearch */
FULLCHECK("nssearch");
lookup->ns_search_only = state;
if (state) {
lookup->trace_root = ISC_TRUE;
lookup->recurse = ISC_TRUE;
lookup->identify = ISC_TRUE;
lookup->stats = ISC_FALSE;
lookup->comments = ISC_FALSE;
lookup->section_additional = ISC_FALSE;
lookup->section_authority = ISC_FALSE;
lookup->section_question = ISC_FALSE;
lookup->rdtype = dns_rdatatype_ns;
lookup->rdtypeset = ISC_TRUE;
short_form = ISC_TRUE;
}
break;
default:
goto invalid_option;
}
break;
case 'q':
switch (cmd[1]) {
case 'r': /* qr */
FULLCHECK("qr");
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 '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;
lookup->retries = parse_uint(value, "retries",
MAXTRIES - 1);
lookup->retries++;
break;
default:
goto invalid_option;
}
break;
default:
goto invalid_option;
}
break;
case 's':
switch (cmd[1]) {
case 'e': /* search */
FULLCHECK("search");
usesearch = state;
break;
case 'h': /* short */
FULLCHECK("short");
short_form = state;
if (state) {
printcmd = ISC_FALSE;
lookup->section_additional = ISC_FALSE;
lookup->section_answer = ISC_TRUE;
lookup->section_authority = ISC_FALSE;
lookup->section_question = ISC_FALSE;
lookup->comments = ISC_FALSE;
lookup->stats = ISC_FALSE;
}
break;
#ifdef DIG_SIGCHASE
case 'i': /* sigchase */
FULLCHECK("sigchase");
lookup->sigchase = state;
if (lookup->sigchase)
lookup->dnssec = ISC_TRUE;
break;
#endif
case 't': /* stats */
FULLCHECK("stats");
lookup->stats = state;
break;
default:
goto invalid_option;
}
break;
case 't':
switch (cmd[1]) {
case 'c': /* tcp */
FULLCHECK("tcp");
if (!is_batchfile)
lookup->tcp_mode = state;
break;
case 'i': /* timeout */
FULLCHECK("timeout");
if (value == NULL)
goto need_value;
if (!state)
goto invalid_option;
timeout = parse_uint(value, "timeout", MAXTIMEOUT);
if (timeout == 0)
timeout = 1;
break;
#if DIG_SIGCHASE_TD
case 'o': /* topdown */
FULLCHECK("topdown");
lookup->do_topdown = state;
break;
#endif
case 'r':
switch (cmd[2]) {
case 'a': /* trace */
FULLCHECK("trace");
lookup->trace = state;
lookup->trace_root = state;
if (state) {
lookup->recurse = ISC_FALSE;
lookup->identify = ISC_TRUE;
lookup->comments = ISC_FALSE;
lookup->stats = ISC_FALSE;
lookup->section_additional = ISC_FALSE;
lookup->section_authority = ISC_TRUE;
lookup->section_question = ISC_FALSE;
}
break;
case 'i': /* tries */
FULLCHECK("tries");
if (value == NULL)
goto need_value;
if (!state)
goto invalid_option;
lookup->retries = parse_uint(value, "tries",
MAXTRIES);
if (lookup->retries == 0)
lookup->retries = 1;
break;
#ifdef DIG_SIGCHASE
case 'u': /* trusted-key */
FULLCHECK("trusted-key");
if (value == NULL)
goto need_value;
if (!state)
goto invalid_option;
n = strlcpy(trustedkey, ptr,
sizeof(trustedkey));
if (n >= sizeof(trustedkey))
fatal("trusted key too large");
break;
#endif
default:
goto invalid_option;
}
break;
case 't': /* ttlid */
FULLCHECK("ttlid");
nottl = !state;
break;
default:
goto invalid_option;
}
break;
case 'v':
FULLCHECK("vc");
if (!is_batchfile)
lookup->tcp_mode = state;
break;
default:
invalid_option:
need_value:
fprintf(stderr, "Invalid option: +%s\n",
option);
usage();
}
return;
}
/*
* ISC_TRUE returned if value was used
*/
static const char *single_dash_opts = "46dhimnv";
static const char *dash_opts = "46bcdfhikmnptvyx";
static isc_boolean_t
dash_option(char *option, char *next, dig_lookup_t **lookup,
isc_boolean_t *open_type_class)
{
char opt, *value, *ptr;
isc_result_t result;
isc_boolean_t 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;
while (strpbrk(option, single_dash_opts) == &option[0]) {
/*
* Since the -[46dhimnv] 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 = ISC_FALSE;
} else {
fatal("can't find IPv4 networking");
return (ISC_FALSE);
}
break;
case '6':
if (have_ipv6) {
isc_net_disableipv4();
have_ipv4 = ISC_FALSE;
} else {
fatal("can't find IPv6 networking");
return (ISC_FALSE);
}
break;
case 'd':
ptr = strpbrk(&option[1], dash_opts);
if (ptr != &option[1]) {
cmd = option;
FULLCHECK("debug");
debugging = ISC_TRUE;
return (ISC_FALSE);
} else
debugging = ISC_TRUE;
break;
case 'h':
help();
exit(0);
break;
case 'i':
ip6_int = ISC_TRUE;
break;
case 'm': /* memdebug */
/* memdebug is handled in preparse_args() */
break;
case 'n':
/* deprecated */
break;
case 'v':
version();
exit(0);
break;
}
if (strlen(option) > 1U)
option = &option[1];
else
return (ISC_FALSE);
}
opt = option[0];
if (strlen(option) > 1U) {
value_from_next = ISC_FALSE;
value = &option[1];
} else {
value_from_next = ISC_TRUE;
value = next;
}
if (value == NULL)
goto invalid_option;
switch (opt) {
case 'b':
hash = strchr(value, '#');
if (hash != NULL) {
srcport = (in_port_t)
parse_uint(hash + 1,
"port number", MAXPORT);
*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 = ISC_TRUE;
return (value_from_next);
case 'c':
if ((*lookup)->rdclassset) {
fprintf(stderr, ";; Warning, extra class option\n");
}
*open_type_class = ISC_FALSE;
tr.base = value;
tr.length = strlen(value);
result = dns_rdataclass_fromtext(&rdclass,
(isc_textregion_t *)&tr);
if (result == ISC_R_SUCCESS) {
(*lookup)->rdclass = rdclass;
(*lookup)->rdclassset = ISC_TRUE;
} else
fprintf(stderr, ";; Warning, ignoring "
"invalid class %s\n",
value);
return (value_from_next);
case 'f':
batchname = value;
return (value_from_next);
case 'k':
strncpy(keyfile, value, sizeof(keyfile));
keyfile[sizeof(keyfile)-1]=0;
return (value_from_next);
case 'p':
port = (in_port_t) parse_uint(value, "port number", MAXPORT);
return (value_from_next);
case 't':
*open_type_class = ISC_FALSE;
if (strncasecmp(value, "ixfr=", 5) == 0) {
rdtype = dns_rdatatype_ixfr;
result = ISC_R_SUCCESS;
} else {
tr.base = value;
tr.length = 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) {
(*lookup)->rdtype = dns_rdatatype_ixfr;
(*lookup)->rdtypeset = ISC_TRUE;
(*lookup)->ixfr_serial =
parse_uint(&value[5], "serial number",
MAXSERIAL);
(*lookup)->section_question = plusquest;
(*lookup)->comments = pluscomm;
} else {
(*lookup)->rdtype = rdtype;
(*lookup)->rdtypeset = ISC_TRUE;
if (rdtype == dns_rdatatype_axfr) {
(*lookup)->section_question = plusquest;
(*lookup)->comments = pluscomm;
}
(*lookup)->ixfr_serial = ISC_FALSE;
}
} else
fprintf(stderr, ";; Warning, ignoring "
"invalid type %s\n",
value);
return (value_from_next);
case 'y':
ptr = next_token(&value,":");
if (ptr == NULL) {
usage();
}
strncpy(keynametext, ptr, sizeof(keynametext));
keynametext[sizeof(keynametext)-1]=0;
ptr = next_token(&value, "");
if (ptr == NULL)
usage();
strncpy(keysecret, ptr, sizeof(keysecret));
keysecret[sizeof(keysecret)-1]=0;
return (value_from_next);
case 'x':
*lookup = clone_lookup(default_lookup, ISC_TRUE);
if (get_reverse(textname, sizeof(textname), value,
ip6_int, ISC_FALSE) == ISC_R_SUCCESS) {
strncpy((*lookup)->textname, textname,
sizeof((*lookup)->textname));
debug("looking up %s", (*lookup)->textname);
(*lookup)->trace_root = ISC_TF((*lookup)->trace ||
(*lookup)->ns_search_only);
(*lookup)->ip6_int = ip6_int;
if (!(*lookup)->rdtypeset)
(*lookup)->rdtype = dns_rdatatype_ptr;
if (!(*lookup)->rdclassset)
(*lookup)->rdclass = dns_rdataclass_in;
(*lookup)->new_search = ISC_TRUE;
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();
}
return (ISC_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]) {
if (option[0] == 'm') {
memdebugging = ISC_TRUE;
isc_mem_debugging = ISC_MEM_DEBUGTRACE |
ISC_MEM_DEBUGRECORD;
return;
}
option = &option[1];
}
}
}
static void
getaddresses(dig_lookup_t *lookup, const char *host) {
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 (result != ISC_R_SUCCESS)
fatal("couldn't get address for '%s': %s",
host, isc_result_totext(result));
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);
}
addresscount = count;
}
static void
parse_args(isc_boolean_t is_batchfile, isc_boolean_t config_only,
int argc, char **argv) {
isc_result_t result;
isc_textregion_t tr;
isc_boolean_t firstarg = ISC_TRUE;
dig_lookup_t *lookup = NULL;
dns_rdatatype_t rdtype;
dns_rdataclass_t rdclass;
isc_boolean_t open_type_class = ISC_TRUE;
char batchline[MXNAME];
int bargc;
char *bargv[64];
int rc;
char **rv;
#ifndef NOPOSIX
char *homedir;
char rcfile[256];
#endif
char *input;
/*
* 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();
#ifndef NOPOSIX
/*
* Treat ${HOME}/.digrc as a special batchfile
*/
INSIST(batchfp == NULL);
homedir = getenv("HOME");
if (homedir != NULL) {
unsigned int n;
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 = 1;
input = batchline;
bargv[bargc] = next_token(&input, " \t\r\n");
while ((bargv[bargc] != NULL) &&
(bargc < 62)) {
bargc++;
bargv[bargc] =
next_token(&input, " \t\r\n");
}
bargv[0] = argv[0];
argv0 = argv[0];
reorder_args(bargc, (char **)bargv);
parse_args(ISC_TRUE, ISC_TRUE, bargc,
(char **)bargv);
}
fclose(batchfp);
}
#endif
}
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 (strncmp(rv[0], "@", 1) == 0) {
getaddresses(lookup, &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)) {
rc--;
rv++;
}
} else {
if (dash_option(&rv[0][1], rv[1],
&lookup, &open_type_class)) {
rc--;
rv++;
}
}
} else {
/*
* Anything which isn't an option
*/
if (open_type_class) {
if (strncmp(rv[0], "ixfr=", 5) == 0) {
rdtype = dns_rdatatype_ixfr;
result = ISC_R_SUCCESS;
} else {
tr.base = rv[0];
tr.length = strlen(rv[0]);
result = dns_rdatatype_fromtext(&rdtype,
(isc_textregion_t *)&tr);
if (result == ISC_R_SUCCESS &&
rdtype == dns_rdatatype_ixfr) {
result = DNS_R_UNKNOWN;
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) {
lookup->rdtype =
dns_rdatatype_ixfr;
lookup->rdtypeset = ISC_TRUE;
lookup->ixfr_serial =
parse_uint(&rv[0][5],
"serial number",
MAXSERIAL);
lookup->section_question =
plusquest;
lookup->comments = pluscomm;
} else {
lookup->rdtype = rdtype;
lookup->rdtypeset = ISC_TRUE;
if (rdtype ==
dns_rdatatype_axfr) {
lookup->section_question =
plusquest;
lookup->comments = pluscomm;
}
lookup->ixfr_serial = ISC_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 = ISC_TRUE;
continue;
}
}
if (!config_only) {
lookup = clone_lookup(default_lookup,
ISC_TRUE);
strncpy(lookup->textname, rv[0],
sizeof(lookup->textname));
lookup->textname[sizeof(lookup->textname)-1]=0;
lookup->trace_root = ISC_TF(lookup->trace ||
lookup->ns_search_only);
lookup->new_search = ISC_TRUE;
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
*/
if ((batchname != NULL) && !(is_batchfile)) {
if (strcmp(batchname, "-") == 0)
batchfp = stdin;
else
batchfp = fopen(batchname, "r");
if (batchfp == NULL) {
perror(batchname);
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) {
bargc = 1;
debug("batch line %s", batchline);
if (batchline[0] == '\r' || batchline[0] == '\n'
|| batchline[0] == '#' || batchline[0] == ';')
goto next_line;
input = batchline;
bargv[bargc] = next_token(&input, " \t\r\n");
while ((bargv[bargc] != NULL) && (bargc < 14)) {
bargc++;
bargv[bargc] = next_token(&input, " \t\r\n");
}
bargv[0] = argv[0];
argv0 = argv[0];
reorder_args(bargc, (char **)bargv);
parse_args(ISC_TRUE, ISC_FALSE, bargc, (char **)bargv);
}
}
/*
* If no lookup specified, search for root
*/
if ((lookup_list.head == NULL) && !config_only) {
lookup = clone_lookup(default_lookup, ISC_TRUE);
lookup->trace_root = ISC_TF(lookup->trace ||
lookup->ns_search_only);
lookup->new_search = ISC_TRUE;
strcpy(lookup->textname, ".");
lookup->rdtype = dns_rdatatype_ns;
lookup->rdtypeset = ISC_TRUE;
if (firstarg) {
printgreeting(argc, argv, lookup);
firstarg = ISC_FALSE;
}
ISC_LIST_APPEND(lookup_list, lookup, link);
} else if (!config_only && firstarg) {
printgreeting(argc, argv, lookup);
firstarg = ISC_FALSE;
}
}
/*
* 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.
*/
void
dighost_shutdown(void) {
char batchline[MXNAME];
int bargc;
char *bargv[16];
char *input;
if (batchname == NULL) {
isc_app_shutdown();
return;
}
fflush(stdout);
if (feof(batchfp)) {
batchname = NULL;
isc_app_shutdown();
if (batchfp != stdin)
fclose(batchfp);
return;
}
if (fgets(batchline, sizeof(batchline), batchfp) != 0) {
debug("batch line %s", batchline);
bargc = 1;
input = batchline;
bargv[bargc] = next_token(&input, " \t\r\n");
while ((bargv[bargc] != NULL) && (bargc < 14)) {
bargc++;
bargv[bargc] = next_token(&input, " \t\r\n");
}
bargv[0] = argv0;
reorder_args(bargc, (char **)bargv);
parse_args(ISC_TRUE, ISC_FALSE, bargc, (char **)bargv);
start_lookup();
} else {
batchname = NULL;
if (batchfp != stdin)
fclose(batchfp);
isc_app_shutdown();
return;
}
}
int
main(int argc, char **argv) {
isc_result_t result;
dig_server_t *s, *s2;
ISC_LIST_INIT(lookup_list);
ISC_LIST_INIT(server_list);
ISC_LIST_INIT(search_list);
debug("main()");
preparse_args(argc, argv);
progname = argv[0];
result = isc_app_start();
check_result(result, "isc_app_start");
setup_libs();
parse_args(ISC_FALSE, ISC_FALSE, argc, argv);
setup_system();
if (domainopt[0] != '\0') {
set_search_domain(domainopt);
usesearch = ISC_TRUE;
}
result = isc_app_onrun(mctx, global_task, onrun_callback, NULL);
check_result(result, "isc_app_onrun");
isc_app_run();
s = ISC_LIST_HEAD(default_lookup->my_server_list);
while (s != NULL) {
debug("freeing server %p belonging to %p",
s, default_lookup);
s2 = s;
s = ISC_LIST_NEXT(s, link);
ISC_LIST_DEQUEUE(default_lookup->my_server_list, s2, link);
isc_mem_free(mctx, s2);
}
isc_mem_free(mctx, default_lookup);
if (batchname != NULL) {
if (batchfp != stdin)
fclose(batchfp);
batchname = NULL;
}
#ifdef DIG_SIGCHASE
clean_trustedkey();
#endif
cancel_all();
destroy_libs();
isc_app_finish();
return (exitcode);
}