2 * Copyright (C) 2001 WIDE Project.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char rcsid[] _U_ =
32 "@(#) $Header: /tcpdump/master/tcpdump/print-lwres.c,v 1.13 2004/03/24 01:54:29 guy Exp $ (LBL)";
39 #include <tcpdump-stdinc.h>
46 #include "interface.h"
47 #include "addrtoname.h"
48 #include "extract.h" /* must come after interface.h */
50 /* BIND9 lib/lwres/include/lwres */
51 typedef u_int32_t lwres_uint32_t;
52 typedef u_int16_t lwres_uint16_t;
53 typedef u_int8_t lwres_uint8_t;
55 struct lwres_lwpacket {
56 lwres_uint32_t length;
57 lwres_uint16_t version;
58 lwres_uint16_t pktflags;
59 lwres_uint32_t serial;
60 lwres_uint32_t opcode;
61 lwres_uint32_t result;
62 lwres_uint32_t recvlength;
63 lwres_uint16_t authtype;
64 lwres_uint16_t authlength;
67 #define LWRES_LWPACKETFLAG_RESPONSE 0x0001U /* if set, pkt is a response */
69 #define LWRES_LWPACKETVERSION_0 0
71 #define LWRES_FLAG_TRUSTNOTREQUIRED 0x00000001U
72 #define LWRES_FLAG_SECUREDATA 0x00000002U
77 #define LWRES_OPCODE_NOOP 0x00000000U
81 lwres_uint16_t datalength;
83 } lwres_nooprequest_t;
87 lwres_uint16_t datalength;
89 } lwres_noopresponse_t;
92 * get addresses by name
94 #define LWRES_OPCODE_GETADDRSBYNAME 0x00010001U
96 typedef struct lwres_addr lwres_addr_t;
99 lwres_uint32_t family;
100 lwres_uint16_t length;
106 lwres_uint32_t flags;
107 lwres_uint32_t addrtypes;
108 lwres_uint16_t namelen;
110 } lwres_gabnrequest_t;
114 lwres_uint32_t flags;
115 lwres_uint16_t naliases;
116 lwres_uint16_t naddrs;
117 lwres_uint16_t realnamelen;
118 /* aliases follows */
120 /* realname follows */
121 } lwres_gabnresponse_t;
124 * get name by address
126 #define LWRES_OPCODE_GETNAMEBYADDR 0x00010002U
129 lwres_uint32_t flags;
131 /* addr body follows */
132 } lwres_gnbarequest_t;
136 lwres_uint32_t flags;
137 lwres_uint16_t naliases;
138 lwres_uint16_t realnamelen;
139 /* aliases follows */
140 /* realname follows */
141 } lwres_gnbaresponse_t;
146 #define LWRES_OPCODE_GETRDATABYNAME 0x00010003U
150 lwres_uint32_t flags;
151 lwres_uint16_t rdclass;
152 lwres_uint16_t rdtype;
153 lwres_uint16_t namelen;
155 } lwres_grbnrequest_t;
159 lwres_uint32_t flags;
160 lwres_uint16_t rdclass;
161 lwres_uint16_t rdtype;
163 lwres_uint16_t nrdatas;
164 lwres_uint16_t nsigs;
165 /* realname here (len + name) */
166 /* rdata here (len + name) */
167 /* signatures here (len + name) */
168 } lwres_grbnresponse_t;
170 #define LWRDATA_VALIDATED 0x00000001
172 #define LWRES_ADDRTYPE_V4 0x00000001U /* ipv4 */
173 #define LWRES_ADDRTYPE_V6 0x00000002U /* ipv6 */
175 #define LWRES_MAX_ALIASES 16 /* max # of aliases */
176 #define LWRES_MAX_ADDRS 64 /* max # of addrs */
178 struct tok opcode[] = {
179 { LWRES_OPCODE_NOOP, "noop", },
180 { LWRES_OPCODE_GETADDRSBYNAME, "getaddrsbyname", },
181 { LWRES_OPCODE_GETNAMEBYADDR, "getnamebyaddr", },
182 { LWRES_OPCODE_GETRDATABYNAME, "getrdatabyname", },
187 extern struct tok ns_type2str[];
188 extern struct tok ns_class2str[];
190 static int lwres_printname(size_t, const char *);
191 static int lwres_printnamelen(const char *);
192 static int lwres_printbinlen(const char *);
193 static int lwres_printaddr(lwres_addr_t *);
196 lwres_printname(size_t l, const char *p0)
202 /* + 1 for terminating \0 */
203 if (p + l + 1 > (const char *)snapend)
207 for (i = 0; i < l; i++)
209 p++; /* skip terminating \0 */
218 lwres_printnamelen(const char *p)
223 if (p + 2 > (const char *)snapend)
225 l = EXTRACT_16BITS(p);
226 advance = lwres_printname(l, p + 2);
236 lwres_printbinlen(const char *p0)
243 if (p + 2 > (const char *)snapend)
245 l = EXTRACT_16BITS(p);
246 if (p + 2 + l > (const char *)snapend)
249 for (i = 0; i < l; i++)
250 printf("%02x", *p++);
258 lwres_printaddr(lwres_addr_t *ap)
265 l = EXTRACT_16BITS(&ap->length);
266 /* XXX ap points to packed struct */
267 p = (const char *)&ap->length + sizeof(ap->length);
270 switch (EXTRACT_32BITS(&ap->family)) {
274 printf(" %s", ipaddr_string(p));
275 p += sizeof(struct in_addr);
281 printf(" %s", ip6addr_string(p));
282 p += sizeof(struct in6_addr);
286 printf(" %u/", EXTRACT_32BITS(&ap->family));
287 for (i = 0; i < l; i++)
288 printf("%02x", *p++);
291 return p - (const char *)ap;
298 lwres_print(register const u_char *bp, u_int length)
300 const struct lwres_lwpacket *np;
307 np = (const struct lwres_lwpacket *)bp;
308 TCHECK(np->authlength);
311 v = EXTRACT_16BITS(&np->version);
312 if (vflag || v != LWRES_LWPACKETVERSION_0)
314 if (v != LWRES_LWPACKETVERSION_0) {
315 s = (const char *)np + EXTRACT_32BITS(&np->length);
319 response = EXTRACT_16BITS(&np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE;
321 /* opcode and pktflags */
322 v = EXTRACT_32BITS(&np->opcode);
323 s = tok2str(opcode, "#0x%x", v);
324 printf(" %s%s", s, response ? "" : "?");
327 v = EXTRACT_16BITS(&np->pktflags);
328 if (v & ~LWRES_LWPACKETFLAG_RESPONSE)
333 printf("serial:0x%x", EXTRACT_32BITS(&np->serial));
334 printf(" result:0x%x", EXTRACT_32BITS(&np->result));
335 printf(" recvlen:%u", EXTRACT_32BITS(&np->recvlength));
336 /* BIND910: not used */
338 printf(" authtype:0x%x", EXTRACT_16BITS(&np->authtype));
339 printf(" authlen:%u", EXTRACT_16BITS(&np->authlength));
345 /* per-opcode content */
350 lwres_gabnrequest_t *gabn;
351 lwres_gnbarequest_t *gnba;
352 lwres_grbnrequest_t *grbn;
359 switch (EXTRACT_32BITS(&np->opcode)) {
360 case LWRES_OPCODE_NOOP:
362 case LWRES_OPCODE_GETADDRSBYNAME:
363 gabn = (lwres_gabnrequest_t *)(np + 1);
364 TCHECK(gabn->namelen);
365 /* XXX gabn points to packed struct */
366 s = (const char *)&gabn->namelen +
367 sizeof(gabn->namelen);
368 l = EXTRACT_16BITS(&gabn->namelen);
370 /* BIND910: not used */
372 printf(" flags:0x%x",
373 EXTRACT_32BITS(&gabn->flags));
376 v = EXTRACT_32BITS(&gabn->addrtypes);
377 switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) {
378 case LWRES_ADDRTYPE_V4:
381 case LWRES_ADDRTYPE_V6:
384 case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6:
388 if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6))
391 advance = lwres_printname(l, s);
396 case LWRES_OPCODE_GETNAMEBYADDR:
397 gnba = (lwres_gnbarequest_t *)(np + 1);
400 /* BIND910: not used */
402 printf(" flags:0x%x",
403 EXTRACT_32BITS(&gnba->flags));
406 s = (const char *)&gnba->addr;
408 advance = lwres_printaddr(&gnba->addr);
413 case LWRES_OPCODE_GETRDATABYNAME:
414 /* XXX no trace, not tested */
415 grbn = (lwres_grbnrequest_t *)(np + 1);
416 TCHECK(grbn->namelen);
418 /* BIND910: not used */
420 printf(" flags:0x%x",
421 EXTRACT_32BITS(&grbn->flags));
424 printf(" %s", tok2str(ns_type2str, "Type%d",
425 EXTRACT_16BITS(&grbn->rdtype)));
426 if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) {
427 printf(" %s", tok2str(ns_class2str, "Class%d",
428 EXTRACT_16BITS(&grbn->rdclass)));
431 /* XXX grbn points to packed struct */
432 s = (const char *)&grbn->namelen +
433 sizeof(grbn->namelen);
434 l = EXTRACT_16BITS(&grbn->namelen);
436 advance = lwres_printname(l, s);
449 lwres_gabnresponse_t *gabn;
450 lwres_gnbaresponse_t *gnba;
451 lwres_grbnresponse_t *grbn;
459 switch (EXTRACT_32BITS(&np->opcode)) {
460 case LWRES_OPCODE_NOOP:
462 case LWRES_OPCODE_GETADDRSBYNAME:
463 gabn = (lwres_gabnresponse_t *)(np + 1);
464 TCHECK(gabn->realnamelen);
465 /* XXX gabn points to packed struct */
466 s = (const char *)&gabn->realnamelen +
467 sizeof(gabn->realnamelen);
468 l = EXTRACT_16BITS(&gabn->realnamelen);
470 /* BIND910: not used */
472 printf(" flags:0x%x",
473 EXTRACT_32BITS(&gabn->flags));
476 printf(" %u/%u", EXTRACT_16BITS(&gabn->naliases),
477 EXTRACT_16BITS(&gabn->naddrs));
479 advance = lwres_printname(l, s);
485 na = EXTRACT_16BITS(&gabn->naliases);
486 for (i = 0; i < na; i++) {
487 advance = lwres_printnamelen(s);
494 na = EXTRACT_16BITS(&gabn->naddrs);
495 for (i = 0; i < na; i++) {
496 advance = lwres_printaddr((lwres_addr_t *)s);
502 case LWRES_OPCODE_GETNAMEBYADDR:
503 gnba = (lwres_gnbaresponse_t *)(np + 1);
504 TCHECK(gnba->realnamelen);
505 /* XXX gnba points to packed struct */
506 s = (const char *)&gnba->realnamelen +
507 sizeof(gnba->realnamelen);
508 l = EXTRACT_16BITS(&gnba->realnamelen);
510 /* BIND910: not used */
512 printf(" flags:0x%x",
513 EXTRACT_32BITS(&gnba->flags));
516 printf(" %u", EXTRACT_16BITS(&gnba->naliases));
518 advance = lwres_printname(l, s);
524 na = EXTRACT_16BITS(&gnba->naliases);
525 for (i = 0; i < na; i++) {
526 advance = lwres_printnamelen(s);
532 case LWRES_OPCODE_GETRDATABYNAME:
533 /* XXX no trace, not tested */
534 grbn = (lwres_grbnresponse_t *)(np + 1);
537 /* BIND910: not used */
539 printf(" flags:0x%x",
540 EXTRACT_32BITS(&grbn->flags));
543 printf(" %s", tok2str(ns_type2str, "Type%d",
544 EXTRACT_16BITS(&grbn->rdtype)));
545 if (EXTRACT_16BITS(&grbn->rdclass) != C_IN) {
546 printf(" %s", tok2str(ns_class2str, "Class%d",
547 EXTRACT_16BITS(&grbn->rdclass)));
550 relts_print(EXTRACT_32BITS(&grbn->ttl));
551 printf(" %u/%u", EXTRACT_16BITS(&grbn->nrdatas),
552 EXTRACT_16BITS(&grbn->nsigs));
554 /* XXX grbn points to packed struct */
555 s = (const char *)&grbn->nsigs+ sizeof(grbn->nsigs);
557 advance = lwres_printnamelen(s);
563 na = EXTRACT_16BITS(&grbn->nrdatas);
564 for (i = 0; i < na; i++) {
565 /* XXX should decode resource data */
566 advance = lwres_printbinlen(s);
573 na = EXTRACT_16BITS(&grbn->nsigs);
574 for (i = 0; i < na; i++) {
575 /* XXX how should we print it? */
576 advance = lwres_printbinlen(s);
589 /* length mismatch */
590 if (EXTRACT_32BITS(&np->length) != length) {
591 printf(" [len: %u != %u]", EXTRACT_32BITS(&np->length),
594 if (!unsupported && s < (const char *)np + EXTRACT_32BITS(&np->length))