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Switch to config.h instead of passing defines in DEFS.
[tcpdump] / print-domain.c
1 /*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
4 *
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
16 * written permission.
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.
20 */
21
22 #ifndef lint
23 static const char rcsid[] =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.42 1999-11-21 09:36:50 fenner Exp $ (LBL)";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include <sys/param.h>
32 #include <sys/time.h>
33 #include <sys/socket.h>
34
35 #if __STDC__
36 struct mbuf;
37 struct rtentry;
38 #endif
39 #include <net/if.h>
40
41 #include <netinet/in.h>
42 #include <netinet/if_ether.h>
43 #include <netinet/in_systm.h>
44 #include <netinet/ip.h>
45 #include <netinet/ip_var.h>
46 #include <netinet/udp.h>
47 #include <netinet/udp_var.h>
48 #include <netinet/tcp.h>
49
50 #ifdef NOERROR
51 #undef NOERROR /* Solaris sucks */
52 #endif
53 #ifdef NOERROR
54 #undef T_UNSPEC /* SINIX does too */
55 #endif
56 #include <arpa/nameser.h>
57
58 #include <stdio.h>
59 #include <string.h>
60
61 #include "interface.h"
62 #include "addrtoname.h"
63 #include "extract.h" /* must come after interface.h */
64
65 /* Compatibility */
66 #ifndef T_TXT
67 #define T_TXT 16 /* text strings */
68 #endif
69 #ifndef T_RP
70 #define T_RP 17 /* responsible person */
71 #endif
72 #ifndef T_AFSDB
73 #define T_AFSDB 18 /* AFS cell database */
74 #endif
75 #ifndef T_X25
76 #define T_X25 19 /* X_25 calling address */
77 #endif
78 #ifndef T_ISDN
79 #define T_ISDN 20 /* ISDN calling address */
80 #endif
81 #ifndef T_RT
82 #define T_RT 21 /* router */
83 #endif
84 #ifndef T_NSAP
85 #define T_NSAP 22 /* NSAP address */
86 #endif
87 #ifndef T_NSAP_PTR
88 #define T_NSAP_PTR 23 /* reverse NSAP lookup (deprecated) */
89 #endif
90 #ifndef T_SIG
91 #define T_SIG 24 /* security signature */
92 #endif
93 #ifndef T_KEY
94 #define T_KEY 25 /* security key */
95 #endif
96 #ifndef T_PX
97 #define T_PX 26 /* X.400 mail mapping */
98 #endif
99 #ifndef T_GPOS
100 #define T_GPOS 27 /* geographical position (withdrawn) */
101 #endif
102 #ifndef T_AAAA
103 #define T_AAAA 28 /* IP6 Address */
104 #endif
105 #ifndef T_LOC
106 #define T_LOC 29 /* Location Information */
107 #endif
108 #ifndef T_NXT
109 #define T_NXT 30 /* Next Valid Name in Zone */
110 #endif
111 #ifndef T_EID
112 #define T_EID 31 /* Endpoint identifier */
113 #endif
114 #ifndef T_NIMLOC
115 #define T_NIMLOC 32 /* Nimrod locator */
116 #endif
117 #ifndef T_SRV
118 #define T_SRV 33 /* Server selection */
119 #endif
120 #ifndef T_ATMA
121 #define T_ATMA 34 /* ATM Address */
122 #endif
123 #ifndef T_NAPTR
124 #define T_NAPTR 35 /* Naming Authority PoinTeR */
125 #endif
126 #ifndef T_A6
127 #define T_A6 38 /* IP6 address (ipngwg-dns-lookups) */
128 #endif
129
130 #ifndef T_UNSPEC
131 #define T_UNSPEC 103 /* Unspecified format (binary data) */
132 #endif
133 #ifndef T_UNSPECA
134 #define T_UNSPECA 104 /* "unspecified ascii". Ugly MIT hack */
135 #endif
136
137 #ifndef C_CHAOS
138 #define C_CHAOS 3 /* for chaos net (MIT) */
139 #endif
140 #ifndef C_HS
141 #define C_HS 4 /* for Hesiod name server (MIT) (XXX) */
142 #endif
143
144 static char *ns_ops[] = {
145 "", " inv_q", " stat", " op3", " notify", " op5", " op6", " op7",
146 " op8", " updataA", " updateD", " updateDA",
147 " updateM", " updateMA", " zoneInit", " zoneRef",
148 };
149
150 static char *ns_resp[] = {
151 "", " FormErr", " ServFail", " NXDomain",
152 " NotImp", " Refused", " Resp6", " Resp7",
153 " Resp8", " Resp9", " Resp10", " Resp11",
154 " Resp12", " Resp13", " Resp14", " NoChange",
155 };
156
157 /* skip over a domain name */
158 static const u_char *
159 ns_nskip(register const u_char *cp, register const u_char *bp)
160 {
161 register u_char i;
162
163 if (((i = *cp++) & INDIR_MASK) == INDIR_MASK)
164 return (cp + 1);
165 while (i && cp < snapend) {
166 cp += i;
167 i = *cp++;
168 }
169 return (cp);
170 }
171
172 /* print a <domain-name> */
173 static const u_char *
174 ns_nprint(register const u_char *cp, register const u_char *bp)
175 {
176 register u_int i;
177 register const u_char *rp;
178 register int compress;
179
180 i = *cp++;
181 rp = cp + i;
182 if ((i & INDIR_MASK) == INDIR_MASK) {
183 rp = cp + 1;
184 compress = 1;
185 } else
186 compress = 0;
187 if (i != 0)
188 while (i && cp < snapend) {
189 if ((i & INDIR_MASK) == INDIR_MASK) {
190 cp = bp + (((i << 8) | *cp) & 0x3fff);
191 i = *cp++;
192 continue;
193 }
194 if (fn_printn(cp, i, snapend))
195 break;
196 cp += i;
197 putchar('.');
198 i = *cp++;
199 if (!compress)
200 rp += i + 1;
201 }
202 else
203 putchar('.');
204 return (rp);
205 }
206
207 /* print a <character-string> */
208 static const u_char *
209 ns_cprint(register const u_char *cp, register const u_char *bp)
210 {
211 register u_int i;
212
213 i = *cp++;
214 (void)fn_printn(cp, i, snapend);
215 return (cp + i);
216 }
217
218 static struct tok type2str[] = {
219 { T_A, "A" },
220 { T_NS, "NS" },
221 { T_MD, "MD" },
222 { T_MF, "MF" },
223 { T_CNAME, "CNAME" },
224 { T_SOA, "SOA" },
225 { T_MB, "MB" },
226 { T_MG, "MG" },
227 { T_MR, "MR" },
228 { T_NULL, "NULL" },
229 { T_WKS, "WKS" },
230 { T_PTR, "PTR" },
231 { T_HINFO, "HINFO" },
232 { T_MINFO, "MINFO" },
233 { T_MX, "MX" },
234 { T_TXT, "TXT" },
235 { T_RP, "RP" },
236 { T_AFSDB, "AFSDB" },
237 { T_X25, "X25" },
238 { T_ISDN, "ISDN" },
239 { T_RT, "RT" },
240 { T_NSAP, "NSAP" },
241 { T_NSAP_PTR, "NSAP_PTR" },
242 { T_SIG, "SIG" },
243 { T_KEY, "KEY" },
244 { T_PX, "PX" },
245 { T_GPOS, "GPOS" },
246 { T_AAAA, "AAAA" },
247 { T_LOC, "LOC " },
248 { T_NXT, "NXT " },
249 { T_EID, "EID " },
250 { T_NIMLOC, "NIMLOC " },
251 { T_SRV, "SRV " },
252 { T_ATMA, "ATMA " },
253 { T_NAPTR, "NAPTR " },
254 { T_A6, "A6 " },
255 #ifndef T_UINFO
256 #define T_UINFO 100
257 #endif
258 { T_UINFO, "UINFO" },
259 #ifndef T_UID
260 #define T_UID 101
261 #endif
262 { T_UID, "UID" },
263 #ifndef T_GID
264 #define T_GID 102
265 #endif
266 { T_GID, "GID" },
267 { T_UNSPEC, "UNSPEC" },
268 { T_UNSPECA, "UNSPECA" },
269 { T_AXFR, "AXFR" },
270 { T_MAILB, "MAILB" },
271 { T_MAILA, "MAILA" },
272 { T_ANY, "ANY" },
273 { 0, NULL }
274 };
275
276 static struct tok class2str[] = {
277 { C_IN, "IN" }, /* Not used */
278 { C_CHAOS, "CHAOS)" },
279 { C_HS, "HS" },
280 { C_ANY, "ANY" },
281 { 0, NULL }
282 };
283
284 /* print a query */
285 static void
286 ns_qprint(register const u_char *cp, register const u_char *bp)
287 {
288 register const u_char *np = cp;
289 register u_int i;
290
291 cp = ns_nskip(cp, bp);
292
293 if (cp + 4 > snapend)
294 return;
295
296 /* print the qtype and qclass (if it's not IN) */
297 i = *cp++ << 8;
298 i |= *cp++;
299 printf(" %s", tok2str(type2str, "Type%d", i));
300 i = *cp++ << 8;
301 i |= *cp++;
302 if (i != C_IN)
303 printf(" %s", tok2str(class2str, "(Class %d)", i));
304
305 fputs("? ", stdout);
306 ns_nprint(np, bp);
307 }
308
309 /* print a reply */
310 static const u_char *
311 ns_rprint(register const u_char *cp, register const u_char *bp)
312 {
313 register u_int i;
314 register u_short typ, len;
315 register const u_char *rp;
316
317 if (vflag) {
318 putchar(' ');
319 cp = ns_nprint(cp, bp);
320 } else
321 cp = ns_nskip(cp, bp);
322
323 if (cp + 10 > snapend)
324 return (snapend);
325
326 /* print the type/qtype and class (if it's not IN) */
327 typ = *cp++ << 8;
328 typ |= *cp++;
329 i = *cp++ << 8;
330 i |= *cp++;
331 if (i != C_IN)
332 printf(" %s", tok2str(class2str, "(Class %d)", i));
333
334 /* ignore ttl */
335 cp += 4;
336
337 len = *cp++ << 8;
338 len |= *cp++;
339
340 rp = cp + len;
341
342 printf(" %s", tok2str(type2str, "Type%d", typ));
343 switch (typ) {
344
345 case T_A:
346 printf(" %s", ipaddr_string(cp));
347 break;
348
349 case T_NS:
350 case T_CNAME:
351 case T_PTR:
352 #ifdef T_DNAME
353 case T_DNAME: /*XXX not checked as there's no server support yet*/
354 #endif
355 putchar(' ');
356 (void)ns_nprint(cp, bp);
357 break;
358
359 case T_MX:
360 putchar(' ');
361 (void)ns_nprint(cp + 2, bp);
362 printf(" %d", EXTRACT_16BITS(cp));
363 break;
364
365 case T_TXT:
366 putchar(' ');
367 (void)ns_cprint(cp, bp);
368 break;
369
370 #ifdef INET6
371 case T_AAAA:
372 printf(" %s", ip6addr_string(cp));
373 break;
374
375 case T_A6: /*XXX not checked as there's no server support yet*/
376 {
377 struct in6_addr a;
378 int pbyte;
379
380 pbyte = (*cp + 7) / 8;
381 memset(&a, 0, sizeof(a));
382 memcpy(&a, cp + 1, pbyte);
383 printf(" %u %s ", *cp, ip6addr_string(&a));
384 (void)ns_nprint(cp + 1 + pbyte, bp);
385 break;
386 }
387 #endif /*INET6*/
388
389 case T_UNSPECA: /* One long string */
390 printf(" %.*s", len, cp);
391 break;
392 }
393 return (rp); /* XXX This isn't always right */
394 }
395
396 void
397 ns_print(register const u_char *bp, u_int length)
398 {
399 register const HEADER *np;
400 register int qdcount, ancount, nscount, arcount;
401 register const u_char *cp;
402
403 np = (const HEADER *)bp;
404 /* get the byte-order right */
405 qdcount = ntohs(np->qdcount);
406 ancount = ntohs(np->ancount);
407 nscount = ntohs(np->nscount);
408 arcount = ntohs(np->arcount);
409
410 if (np->qr) {
411 /* this is a response */
412 printf(" %d%s%s%s%s%s",
413 ntohs(np->id),
414 ns_ops[np->opcode],
415 ns_resp[np->rcode],
416 np->aa? "*" : "",
417 np->ra? "" : "-",
418 np->tc? "|" : "");
419 if (qdcount != 1)
420 printf(" [%dq]", qdcount);
421 /* Print QUESTION section on -vv */
422 if (vflag > 1) {
423 fputs(" q: ", stdout);
424 cp = ns_nprint((const u_char *)(np + 1), bp);
425 } else
426 cp = ns_nskip((const u_char *)(np + 1), bp);
427 printf(" %d/%d/%d", ancount, nscount, arcount);
428 if (ancount--) {
429 cp = ns_rprint(cp + 4, bp);
430 while (ancount-- && cp < snapend) {
431 putchar(',');
432 cp = ns_rprint(cp, bp);
433 }
434 }
435 }
436 else {
437 /* this is a request */
438 printf(" %d%s%s",
439 ntohs(np->id),
440 ns_ops[np->opcode],
441 np->rd? "+" : "");
442
443 /* any weirdness? */
444 if (*(((u_short *)np)+1) & htons(0x6ff))
445 printf(" [b2&3=0x%x]", ntohs(*(((u_short *)np)+1)));
446
447 if (np->opcode == IQUERY) {
448 if (qdcount)
449 printf(" [%dq]", qdcount);
450 if (ancount != 1)
451 printf(" [%da]", ancount);
452 }
453 else {
454 if (ancount)
455 printf(" [%da]", ancount);
456 if (qdcount != 1)
457 printf(" [%dq]", qdcount);
458 }
459 if (nscount)
460 printf(" [%dn]", nscount);
461 if (arcount)
462 printf(" [%dau]", arcount);
463
464 ns_qprint((const u_char *)(np + 1), (const u_char *)np);
465 }
466 printf(" (%d)", length);
467 }
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