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bind/bin/dig/dig.c

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/*
* Copyright (C) 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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.
*/
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
extern int h_errno;
#include <isc/types.h>
#include <isc/app.h>
#include <isc/assertions.h>
#include <isc/error.h>
#include <isc/mem.h>
#include <isc/net.h>
#include <isc/netdb.h>
#include <isc/result.h>
#include <isc/sockaddr.h>
#include <isc/socket.h>
#include <isc/task.h>
#include <isc/timer.h>
#include <isc/time.h>
#include <isc/buffer.h>
#include <isc/list.h>
#include <isc/util.h>
#include <dns/types.h>
#include <dns/message.h>
#include <dns/name.h>
#include <dns/fixedname.h>
#include <dns/rdata.h>
#include <dns/rdatalist.h>
#include <dns/rdataset.h>
#include <dns/rdataclass.h>
#include <dns/rdatatype.h>
#include <dns/result.h>
#include <dig/dig.h>
extern ISC_LIST(dig_lookup_t) lookup_list;
extern ISC_LIST(dig_server_t) server_list;
extern isc_boolean_t tcp_mode, have_ipv6, show_details,
usesearch, trace;
extern in_port_t port;
extern unsigned int timeout;
extern isc_mem_t *mctx;
extern isc_taskmgr_t *taskmgr;
extern isc_task_t *task;
extern isc_timermgr_t *timermgr;
extern isc_socketmgr_t *socketmgr;
extern dns_messageid_t id;
extern char *rootspace[BUFSIZE];
extern isc_buffer_t rootbuf;
extern int sendcount;
extern int ndots;
extern int tries;
extern int lookup_counter;
extern char fixeddomain[MXNAME];
#ifdef TWIDDLE
extern isc_boolean_t twiddle;
#endif
isc_boolean_t short_form = ISC_FALSE;
static char *opcodetext[] = {
"QUERY",
"IQUERY",
"STATUS",
"RESERVED3",
"NOTIFY",
"UPDATE",
"RESERVED6",
"RESERVED7",
"RESERVED8",
"RESERVED9",
"RESERVED10",
"RESERVED11",
"RESERVED12",
"RESERVED13",
"RESERVED14",
"RESERVED15"
};
static char *rcodetext[] = {
"NOERROR",
"FORMERR",
"SERVFAIL",
"NXDOMAIN",
"NOTIMPL",
"REFUSED",
"YXDOMAIN",
"YXRRSET",
"NXRRSET",
"NOTAUTH",
"NOTZONE",
"RESERVED11",
"RESERVED12",
"RESERVED13",
"RESERVED14",
"RESERVED15",
"BADVERS"
};
static void
show_usage() {
fputs (
"Usage: dig [@server] [domain] [q-type] [q-class] {q-opt} {d-opt}\n"
"where: server,\n"
" domain are in the Domain Name System\n"
" q-class is one of (in,chaos,...) [default: in]\n"
" q-type is one of (a,any,mx,ns,soa,hinfo,axfr,txt,...) [default:a]\n"
" q-opt is one of:\n"
" -x dot-notation (shortcut for in-addr lookups)\n"
" -f filename (batch mode)\n"
" -p port (specify port number)\n"
" -t type (specify query type)\n"
" -c class (specify query class)\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"
" +domain=### (Set default domainname)\n"
" +[no]search (Set whether to use searchlist)\n"
" +[no]recursive (Recursive mode)\n"
" +[no]details (Show details of all requests)\n"
#ifdef TWIDDLE
" +twiddle (Intentionally form bad requests)\n"
#endif
" +ndots=### (Set NDOTS value)\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]short (Disable everything except short\n"
" form of answer)\n"
" Additional d-opts subject to removal before release:\n"
" +[no]nssearch (Search all authorative nameservers)\n"
" +[no]identify (ID responders in short answers)\n"
" Available but not yet completed:\n"
" +[no]trace (Trace delegation down from root)\n"
, stderr);
}
void
check_next_lookup(dig_lookup_t *lookup) {
dig_lookup_t *next;
dig_query_t *query;
isc_boolean_t still_working=ISC_FALSE;
debug("In check_next_lookup", stderr);
for (query = ISC_LIST_HEAD(lookup->q);
query != NULL;
query = ISC_LIST_NEXT(query, link)) {
if (query->working) {
debug("Still have a worker.", stderr);
still_working=ISC_TRUE;
}
}
if (still_working)
return;
next = ISC_LIST_NEXT(lookup, link);
debug ("Have %d retries left for %s\n",
lookup->retries, lookup->textname);
if ((next == NULL)&&((lookup->retries <= 1)
||tcp_mode || !lookup->pending)) {
debug("Shutting Down.", stderr);
isc_app_shutdown();
return;
}
if (tcp_mode) {
setup_lookup(next);
do_lookup_tcp(next);
} else {
if ((lookup->retries > 1) && (lookup->pending)) {
lookup->retries --;
send_udp(lookup);
} else {
ENSURE (next != NULL);
setup_lookup(next);
do_lookup_udp(next);
}
}
}
void
received(int bytes, int frmsize, char *frm, dig_query_t *query) {
isc_uint64_t diff;
isc_time_t now;
isc_result_t result;
time_t tnow;
result = isc_time_now(&now);
check_result (result, "isc_time_now");
if (query->lookup->comments) {
diff = isc_time_microdiff(&now, &query->time_sent);
printf(";; Query time: %ld msec\n", (long int)diff/1000);
printf(";; Received %u bytes from %.*s\n",
bytes, frmsize, frm);
time (&tnow);
printf(";; When: %s\n", ctime(&tnow));
} else if (query->lookup->identify && !short_form) {
diff = isc_time_microdiff(&now, &query->time_sent);
printf(";; Received %u bytes from %.*s in %d ms\n",
bytes, frmsize, frm, (int)diff/1000);
}
}
void
trying(int frmsize, char *frm, dig_lookup_t *lookup) {
if (lookup->comments && !short_form)
printf ("; Trying %.*s\n", frmsize, frm);
}
static void
say_message(dns_rdata_t *rdata, dig_query_t *query) {
isc_buffer_t *b=NULL, *b2=NULL;
isc_region_t r, r2;
isc_result_t result;
isc_uint64_t diff;
isc_time_t now;
result = isc_buffer_allocate(mctx, &b, BUFSIZE);
check_result (result, "isc_buffer_allocate");
result = dns_rdata_totext(rdata, NULL, b);
check_result(result, "dns_rdata_totext");
isc_buffer_usedregion(b, &r);
if (!query->lookup->trace && !query->lookup->ns_search_only)
printf ( "%.*s", (int)r.length, (char *)r.base);
else {
result = isc_buffer_allocate(mctx, &b2, BUFSIZE);
check_result (result, "isc_buffer_allocate");
result = dns_rdatatype_totext(rdata->type, b2);
check_result(result, "dns_rdatatype_totext");
isc_buffer_usedregion(b2, &r2);
printf ( "%.*s %.*s",(int)r2.length, (char *)r2.base,
(int)r.length, (char *)r.base);
isc_buffer_free (&b2);
}
if (query->lookup->identify) {
result = isc_time_now(&now);
check_result (result, "isc_time_now");
diff = isc_time_microdiff(&now, &query->time_sent);
printf (" from server %s in %d ms", query->servname,
(int)diff/1000);
}
printf ("\n");
isc_buffer_free(&b);
}
static isc_result_t
printsection(dns_message_t *msg, dns_section_t sectionid, char *section_name,
isc_boolean_t headers, dig_query_t *query)
{
dns_name_t *name, *print_name;
dns_rdataset_t *rdataset;
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;
dns_rdata_t rdata;
if (sectionid == DNS_SECTION_QUESTION)
no_rdata = ISC_TRUE;
else
no_rdata = ISC_FALSE;
if (headers && query->lookup->comments && !short_form)
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 (!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;
}
#endif
} else {
loopresult = dns_rdataset_first(rdataset);
while (loopresult == ISC_R_SUCCESS) {
dns_rdataset_current(rdataset, &rdata);
say_message(&rdata, query);
loopresult = dns_rdataset_next(
rdataset);
}
}
}
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,
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);
}
isc_result_t
printmessage(dig_query_t *query, dns_message_t *msg, isc_boolean_t headers) {
isc_boolean_t did_flag = ISC_FALSE;
isc_result_t result;
dns_rdataset_t *opt, *tsig = NULL;
dns_name_t *tsigname;
UNUSED (query);
result = ISC_R_SUCCESS;
if (headers) {
if (query->lookup->comments && !short_form) {
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");
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;
}
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]) &&
headers && query->lookup->section_question) {
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]) &&
query->lookup->section_answer ) {
if (headers && query->lookup->comments && !short_form)
printf("\n");
result = printsection(msg, DNS_SECTION_ANSWER, "ANSWER",
headers, query);
if (result != ISC_R_SUCCESS)
return (result);
}
if ((! ISC_LIST_EMPTY(msg->sections[DNS_SECTION_AUTHORITY]) &&
headers && query->lookup->section_authority) ||
( ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ANSWER]) &&
headers && query->lookup->section_answer &&
query->lookup->trace )) {
if (headers && query->lookup->comments && !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]) &&
headers && query->lookup->section_additional) {
if (headers && query->lookup->comments && !short_form)
printf("\n");
result = printsection(msg, DNS_SECTION_ADDITIONAL,
"ADDITIONAL", ISC_TRUE, query);
if (result != ISC_R_SUCCESS)
return (result);
}
if ((tsig != NULL) && headers && query->lookup->section_additional) {
if (headers && query->lookup->comments && !short_form)
printf("\n");
result = printrdata(msg, tsig, tsigname,
"PSEUDOSECTION TSIG", ISC_TRUE);
if (result != ISC_R_SUCCESS)
return (result);
}
if (headers && query->lookup->comments && !short_form)
printf("\n");
return (result);
}
/*
* 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;
}
}
}
/*
* 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
* that routine. There is a portability issue here.
*/
void
parse_args(isc_boolean_t is_batchfile, int argc, char **argv) {
isc_boolean_t have_host = ISC_FALSE, identify = ISC_FALSE,
trace = ISC_FALSE, ns_search_only = ISC_FALSE,
forcecomment = ISC_FALSE,
comments = ISC_TRUE, section_question = ISC_TRUE,
section_answer = ISC_TRUE, section_authority = ISC_TRUE,
section_additional = ISC_TRUE, recurse = ISC_TRUE;
dig_server_t *srv = NULL;
dig_lookup_t *lookup = NULL;
char *batchname = NULL;
char batchline[MXNAME];
FILE *fp = NULL;
int bargc;
char *bargv[16];
int i, n;
int adrs[4];
for (argc--, argv++; argc > 0; argc--, argv++) {
debug ("Main parsing %s", argv[0]);
if (strncmp(argv[0], "@", 1) == 0) {
srv=isc_mem_allocate(mctx, sizeof(struct dig_server));
if (srv == NULL)
fatal("Memory allocation failure.");
strncpy(srv->servername, &argv[0][1], MXNAME-1);
if (is_batchfile && have_host) {
if (!lookup->use_my_server_list) {
ISC_LIST_INIT (lookup->
my_server_list);
lookup->use_my_server_list =
ISC_TRUE;
}
ISC_LIST_APPEND(lookup->my_server_list,
srv, link);
} else {
ISC_LIST_APPEND(server_list, srv, link);
}
} else if ((strcmp(argv[0], "+vc") == 0)
&& (!is_batchfile)) {
tcp_mode = ISC_TRUE;
} else if ((strcmp(argv[0], "+novc") == 0)
&& (!is_batchfile)) {
tcp_mode = ISC_FALSE;
} else if ((strcmp(argv[0], "+tcp") == 0)
&& (!is_batchfile)) {
tcp_mode = ISC_TRUE;
} else if ((strcmp(argv[0], "+notcp") == 0)
&& (!is_batchfile)) {
tcp_mode = ISC_FALSE;
} else if (strncmp(argv[0], "+domain=", 8) == 0) {
strncpy (fixeddomain, &argv[0][8], MXNAME);
} else if (strncmp(argv[0], "+sea", 4) == 0) {
usesearch = ISC_TRUE;
} else if (strncmp(argv[0], "+nosea", 6) == 0) {
usesearch = ISC_FALSE;
} else if (strncmp(argv[0], "+time=", 6) == 0) {
timeout = atoi(&argv[0][6]);
if (timeout <= 0)
timeout = 1;
} else if (strncmp(argv[0], "+tries=", 7) == 0) {
tries = atoi(&argv[0][7]);
if (tries <= 0)
tries = 1;
} else if (strncmp(argv[0], "+ndots=", 7) == 0) {
ndots = atoi(&argv[0][7]);
if (timeout <= 0)
timeout = 1;
} else if (strncmp(argv[0], "+rec", 4) == 0) {
recurse = ISC_TRUE;
} else if (strncmp(argv[0], "+norec", 6) == 0) {
recurse = ISC_FALSE;
} else if (strncmp(argv[0], "+ns", 3) == 0) {
ns_search_only = ISC_TRUE;
recurse = ISC_FALSE;
identify = ISC_TRUE;
short_form = ISC_TRUE;
identify = ISC_TRUE;
if (!forcecomment)
comments = ISC_FALSE;
section_additional = ISC_FALSE;
section_authority = ISC_FALSE;
section_question = ISC_FALSE;
} else if (strncmp(argv[0], "+nons", 6) == 0) {
ns_search_only = ISC_FALSE;
} else if (strncmp(argv[0], "+tr", 3) == 0) {
trace = ISC_TRUE;
recurse = ISC_FALSE;
identify = ISC_TRUE;
if (!forcecomment)
comments = ISC_FALSE;
section_additional = ISC_FALSE;
section_authority = ISC_FALSE;
section_question = ISC_FALSE;
show_details = ISC_TRUE;
} else if (strncmp(argv[0], "+notr", 6) == 0) {
trace = ISC_FALSE;
} else if (strncmp(argv[0], "+det", 4) == 0) {
show_details = ISC_TRUE;
} else if (strncmp(argv[0], "+nodet", 6) == 0) {
show_details = ISC_FALSE;
} else if (strncmp(argv[0], "+sho", 4) == 0) {
short_form = ISC_TRUE;
if (!forcecomment)
comments = ISC_FALSE;
section_additional = ISC_FALSE;
section_authority = ISC_FALSE;
section_question = ISC_FALSE;
} else if (strncmp(argv[0], "+nosho", 6) == 0) {
short_form = ISC_FALSE;
} else if (strncmp(argv[0], "+id", 3) == 0) {
identify = ISC_TRUE;
} else if (strncmp(argv[0], "+noid", 5) == 0) {
identify = ISC_FALSE;
} else if (strncmp(argv[0], "+com", 4) == 0) {
comments = ISC_TRUE;
forcecomment = ISC_TRUE;
} else if (strncmp(argv[0], "+nocom", 6) == 0) {
comments = ISC_FALSE;
forcecomment = ISC_FALSE;
} else if (strncmp(argv[0], "+que", 4) == 0) {
section_question = ISC_TRUE;
} else if (strncmp(argv[0], "+noque", 6) == 0) {
section_question = ISC_FALSE;
} else if (strncmp(argv[0], "+ans", 4) == 0) {
section_answer = ISC_TRUE;
} else if (strncmp(argv[0], "+noans", 6) == 0) {
section_answer = ISC_FALSE;
} else if (strncmp(argv[0], "+add", 4) == 0) {
section_additional = ISC_TRUE;
} else if (strncmp(argv[0], "+noadd", 6) == 0) {
section_additional = ISC_FALSE;
} else if (strncmp(argv[0], "+aut", 4) == 0) {
section_authority = ISC_TRUE;
} else if (strncmp(argv[0], "+noaut", 6) == 0) {
section_authority = ISC_FALSE;
} else if (strncmp(argv[0], "+all", 4) == 0) {
section_question = ISC_TRUE;
section_authority = ISC_TRUE;
section_answer = ISC_TRUE;
section_additional = ISC_TRUE;
comments = ISC_TRUE;
} else if (strncmp(argv[0], "+noall", 6) == 0) {
section_question = ISC_FALSE;
section_authority = ISC_FALSE;
section_answer = ISC_FALSE;
section_additional = ISC_FALSE;
comments = ISC_FALSE;
#ifdef TWIDDLE
} else if (strncmp(argv[0], "+twiddle", 6) == 0) {
twiddle = ISC_TRUE;
#endif
} else if (strncmp(argv[0], "-c", 2) == 0) {
if (have_host) {
if (argv[0][2]!=0) {
strncpy(lookup->rctext, &argv[0][2],
MXRD);
} else {
strncpy(lookup->rctext, argv[1],
MXRD);
argv++;
argc--;
}
}
} else if (strncmp(argv[0], "-t", 2) == 0) {
if (have_host) {
if (argv[0][2]!=0) {
strncpy(lookup->rttext, &argv[0][2],
MXRD);
} else {
strncpy(lookup->rttext, argv[1],
MXRD);
argv++;
argc--;
}
}
} else if (strncmp(argv[0], "-f", 2) == 0) {
if (argv[0][2]!=0) {
batchname=&argv[0][2];
} else {
batchname=argv[1];
argv++;
argc--;
}
} else if (strncmp(argv[0], "-p", 2) == 0) {
if (argv[0][2]!=0) {
port=atoi(&argv[0][2]);
} else {
port=atoi(argv[1]);
argv++;
argc--;
}
} else if (strncmp(argv[0], "-h", 2) == 0) {
show_usage();
exit (0);
} else if (strncmp(argv[0], "-x", 2) == 0) {
n = sscanf(argv[1], "%d.%d.%d.%d", &adrs[0], &adrs[1],
&adrs[2], &adrs[3]);
if (n == 0)
show_usage();
lookup_counter++;
if (lookup_counter > LOOKUP_LIMIT)
fatal ("Too many lookups.");
lookup = isc_mem_allocate(mctx,
sizeof(struct dig_lookup));
if (lookup == NULL)
fatal("Memory allocation failure.");
lookup->pending = ISC_FALSE;
lookup->textname[0]=0;
for (i = n - 1; i >= 0; i--) {
snprintf(batchline, MXNAME/8, "%d.",
adrs[i]);
strncat(lookup->textname, batchline, MXNAME);
}
strncat(lookup->textname, "in-addr.arpa.", MXNAME);
debug("Looking up %s", lookup->textname);
strcpy(lookup->rttext, "ptr");
strcpy(lookup->rctext, "in");
lookup->namespace[0]=0;
lookup->sendspace[0]=0;
lookup->sendmsg=NULL;
lookup->name=NULL;
lookup->oname=NULL;
lookup->timer = NULL;
lookup->xfr_q = NULL;
lookup->origin = NULL;
lookup->use_my_server_list = ISC_FALSE;
lookup->trace = (trace || ns_search_only);
lookup->trace_root = trace;
lookup->ns_search_only = ns_search_only;
lookup->doing_xfr = ISC_FALSE;
lookup->identify = identify;
lookup->recurse = recurse;
lookup->retries = tries;
lookup->nsfound = 0;
lookup->comments = comments;
lookup->section_question = section_question;
lookup->section_answer = section_answer;
lookup->section_authority = section_authority;
lookup->section_additional = section_additional;
ISC_LIST_INIT(lookup->q);
lookup->origin = NULL;
ISC_LIST_INIT(lookup->my_server_list);
ISC_LIST_APPEND(lookup_list, lookup, link);
have_host = ISC_TRUE;
argv++;
argc--;
} else {
if (have_host) {
ENSURE(lookup != NULL);
if (istype(argv[0])) {
strncpy(lookup->rttext, argv[0], MXRD);
continue;
} else if (isclass(argv[0])) {
strncpy(lookup->rctext, argv[0],
MXRD);
continue;
}
}
lookup_counter++;
if (lookup_counter > LOOKUP_LIMIT)
fatal ("Too many lookups.");
lookup = isc_mem_allocate(mctx,
sizeof(struct dig_lookup));
if (lookup == NULL)
fatal("Memory allocation failure.");
lookup->pending = ISC_FALSE;
strncpy(lookup->textname, argv[0], MXNAME-1);
lookup->rttext[0]=0;
lookup->rctext[0]=0;
lookup->namespace[0]=0;
lookup->sendspace[0]=0;
lookup->sendmsg=NULL;
lookup->name=NULL;
lookup->oname=NULL;
lookup->timer = NULL;
lookup->xfr_q = NULL;
lookup->origin = NULL;
lookup->use_my_server_list = ISC_FALSE;
lookup->doing_xfr = ISC_FALSE;
lookup->trace = (trace || ns_search_only);
lookup->trace_root = trace;
lookup->ns_search_only = ns_search_only;
lookup->identify = identify;
lookup->recurse = recurse;
lookup->retries = tries;
lookup->nsfound = 0;
lookup->comments = comments;
lookup->section_question = section_question;
lookup->section_answer = section_answer;
lookup->section_authority = section_authority;
lookup->section_additional = section_additional;
ISC_LIST_INIT(lookup->q);
ISC_LIST_APPEND(lookup_list, lookup, link);
lookup->origin = NULL;
ISC_LIST_INIT(lookup->my_server_list);
have_host = ISC_TRUE;
debug("Looking up %s", lookup->textname);
}
}
if (batchname != NULL) {
fp = fopen(batchname, "r");
if (fp == NULL) {
perror(batchname);
fatal("Couldn't open specified batch file.");
}
while (fgets(batchline, MXNAME, fp) != 0) {
debug ("Batch line %s", batchline);
bargc=1;
bargv[bargc]=strtok(batchline, " \t\r\n");
while ((bargv[bargc] != NULL) &&
(bargc < 14 )) {
bargc++;
bargv[bargc]=strtok(NULL, " \t\r\n");
}
bargc--;
bargv[0]="dig";
reorder_args(bargc+1, (char**)bargv);
parse_args(ISC_TRUE, bargc+1, (char**)bargv);
}
}
if (lookup_list.head == NULL) {
lookup_counter++;
if (lookup_counter > LOOKUP_LIMIT)
fatal ("Too many lookups.");
lookup = isc_mem_allocate(mctx, sizeof(struct dig_lookup));
if (lookup == NULL)
fatal("Memory allocation failure.");
lookup->pending = ISC_FALSE;
lookup->rctext[0]=0;
lookup->namespace[0]=0;
lookup->sendspace[0]=0;
lookup->sendmsg=NULL;
lookup->name=NULL;
lookup->oname=NULL;
lookup->timer = NULL;
lookup->xfr_q = NULL;
lookup->origin = NULL;
lookup->use_my_server_list = ISC_FALSE;
lookup->doing_xfr = ISC_FALSE;
lookup->trace = (trace || ns_search_only);
lookup->trace_root = trace;
lookup->ns_search_only = ns_search_only;
lookup->identify = identify;
lookup->recurse = recurse;
lookup->retries = tries;
lookup->nsfound = 0;
lookup->comments = comments;
lookup->section_question = section_question;
lookup->section_answer = section_answer;
lookup->section_authority = section_authority;
lookup->section_additional = section_additional;
ISC_LIST_INIT(lookup->q);
ISC_LIST_INIT(lookup->my_server_list);
strcpy(lookup->textname, ".");
strcpy(lookup->rttext, "NS");
lookup->rctext[0]=0;
ISC_LIST_APPEND(lookup_list, lookup, link);
}
}
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