2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25 static const char rcsid[] =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.42 1999/11/21 09:36:50 fenner Exp $ (LBL)";
33 #include <sys/param.h>
35 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <net/ethernet.h>
45 #include <netinet/in_systm.h>
46 #include <netinet/ip.h>
47 #include <netinet/ip_var.h>
48 #include <netinet/udp.h>
49 #include <netinet/udp_var.h>
50 #include <netinet/tcp.h>
53 #undef NOERROR /* Solaris sucks */
56 #undef T_UNSPEC /* SINIX does too */
58 #include <arpa/nameser.h>
63 #include "interface.h"
64 #include "addrtoname.h"
65 #include "extract.h" /* must come after interface.h */
69 #define T_TXT 16 /* text strings */
72 #define T_RP 17 /* responsible person */
75 #define T_AFSDB 18 /* AFS cell database */
78 #define T_X25 19 /* X_25 calling address */
81 #define T_ISDN 20 /* ISDN calling address */
84 #define T_RT 21 /* router */
87 #define T_NSAP 22 /* NSAP address */
90 #define T_NSAP_PTR 23 /* reverse NSAP lookup (deprecated) */
93 #define T_SIG 24 /* security signature */
96 #define T_KEY 25 /* security key */
99 #define T_PX 26 /* X.400 mail mapping */
102 #define T_GPOS 27 /* geographical position (withdrawn) */
105 #define T_AAAA 28 /* IP6 Address */
108 #define T_LOC 29 /* Location Information */
111 #define T_NXT 30 /* Next Valid Name in Zone */
114 #define T_EID 31 /* Endpoint identifier */
117 #define T_NIMLOC 32 /* Nimrod locator */
120 #define T_SRV 33 /* Server selection */
123 #define T_ATMA 34 /* ATM Address */
126 #define T_NAPTR 35 /* Naming Authority PoinTeR */
129 #define T_A6 38 /* IP6 address (ipngwg-dns-lookups) */
133 #define T_UNSPEC 103 /* Unspecified format (binary data) */
136 #define T_UNSPECA 104 /* "unspecified ascii". Ugly MIT hack */
140 #define C_CHAOS 3 /* for chaos net (MIT) */
143 #define C_HS 4 /* for Hesiod name server (MIT) (XXX) */
146 static char *ns_ops[] = {
147 "", " inv_q", " stat", " op3", " notify", " op5", " op6", " op7",
148 " op8", " updataA", " updateD", " updateDA",
149 " updateM", " updateMA", " zoneInit", " zoneRef",
152 static char *ns_resp[] = {
153 "", " FormErr", " ServFail", " NXDomain",
154 " NotImp", " Refused", " Resp6", " Resp7",
155 " Resp8", " Resp9", " Resp10", " Resp11",
156 " Resp12", " Resp13", " Resp14", " NoChange",
159 /* skip over a domain name */
160 static const u_char *
161 ns_nskip(register const u_char *cp, register const u_char *bp)
165 if (((i = *cp++) & INDIR_MASK) == INDIR_MASK)
167 while (i && cp < snapend) {
174 /* print a <domain-name> */
175 static const u_char *
176 ns_nprint(register const u_char *cp, register const u_char *bp)
179 register const u_char *rp;
180 register int compress;
184 if ((i & INDIR_MASK) == INDIR_MASK) {
190 while (i && cp < snapend) {
191 if ((i & INDIR_MASK) == INDIR_MASK) {
192 cp = bp + (((i << 8) | *cp) & 0x3fff);
196 if (fn_printn(cp, i, snapend))
209 /* print a <character-string> */
210 static const u_char *
211 ns_cprint(register const u_char *cp, register const u_char *bp)
216 (void)fn_printn(cp, i, snapend);
220 static struct tok type2str[] = {
225 { T_CNAME, "CNAME" },
233 { T_HINFO, "HINFO" },
234 { T_MINFO, "MINFO" },
238 { T_AFSDB, "AFSDB" },
243 { T_NSAP_PTR, "NSAP_PTR" },
252 { T_NIMLOC, "NIMLOC " },
255 { T_NAPTR, "NAPTR " },
260 { T_UINFO, "UINFO" },
269 { T_UNSPEC, "UNSPEC" },
270 { T_UNSPECA, "UNSPECA" },
272 { T_MAILB, "MAILB" },
273 { T_MAILA, "MAILA" },
278 static struct tok class2str[] = {
279 { C_IN, "IN" }, /* Not used */
280 { C_CHAOS, "CHAOS)" },
288 ns_qprint(register const u_char *cp, register const u_char *bp)
290 register const u_char *np = cp;
293 cp = ns_nskip(cp, bp);
295 if (cp + 4 > snapend)
298 /* print the qtype and qclass (if it's not IN) */
301 printf(" %s", tok2str(type2str, "Type%d", i));
305 printf(" %s", tok2str(class2str, "(Class %d)", i));
312 static const u_char *
313 ns_rprint(register const u_char *cp, register const u_char *bp)
316 register u_short typ, len;
317 register const u_char *rp;
321 cp = ns_nprint(cp, bp);
323 cp = ns_nskip(cp, bp);
325 if (cp + 10 > snapend)
328 /* print the type/qtype and class (if it's not IN) */
334 printf(" %s", tok2str(class2str, "(Class %d)", i));
344 printf(" %s", tok2str(type2str, "Type%d", typ));
348 printf(" %s", ipaddr_string(cp));
355 case T_DNAME: /*XXX not checked as there's no server support yet*/
358 (void)ns_nprint(cp, bp);
363 (void)ns_nprint(cp + 2, bp);
364 printf(" %d", EXTRACT_16BITS(cp));
369 (void)ns_cprint(cp, bp);
374 printf(" %s", ip6addr_string(cp));
377 case T_A6: /*XXX not checked as there's no server support yet*/
382 pbyte = (*cp + 7) / 8;
383 memset(&a, 0, sizeof(a));
384 memcpy(&a, cp + 1, pbyte);
385 printf(" %u %s ", *cp, ip6addr_string(&a));
386 (void)ns_nprint(cp + 1 + pbyte, bp);
391 case T_UNSPECA: /* One long string */
392 printf(" %.*s", len, cp);
395 return (rp); /* XXX This isn't always right */
399 ns_print(register const u_char *bp, u_int length)
401 register const HEADER *np;
402 register int qdcount, ancount, nscount, arcount;
403 register const u_char *cp;
405 np = (const HEADER *)bp;
406 /* get the byte-order right */
407 qdcount = ntohs(np->qdcount);
408 ancount = ntohs(np->ancount);
409 nscount = ntohs(np->nscount);
410 arcount = ntohs(np->arcount);
413 /* this is a response */
414 printf(" %d%s%s%s%s%s",
422 printf(" [%dq]", qdcount);
423 /* Print QUESTION section on -vv */
425 fputs(" q: ", stdout);
426 cp = ns_nprint((const u_char *)(np + 1), bp);
428 cp = ns_nskip((const u_char *)(np + 1), bp);
429 printf(" %d/%d/%d", ancount, nscount, arcount);
431 cp = ns_rprint(cp + 4, bp);
432 while (ancount-- && cp < snapend) {
434 cp = ns_rprint(cp, bp);
439 /* this is a request */
446 if (*(((u_short *)np)+1) & htons(0x6ff))
447 printf(" [b2&3=0x%x]", ntohs(*(((u_short *)np)+1)));
449 if (np->opcode == IQUERY) {
451 printf(" [%dq]", qdcount);
453 printf(" [%da]", ancount);
457 printf(" [%da]", ancount);
459 printf(" [%dq]", qdcount);
462 printf(" [%dn]", nscount);
464 printf(" [%dau]", arcount);
466 ns_qprint((const u_char *)(np + 1), (const u_char *)np);
468 printf(" (%d)", length);