]> The Tcpdump Group git mirrors - tcpdump/blob - print-pgm.c
projects / tcpdump / blob
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
Don't do IPv6 stuff if INET6 isn't defined.
[tcpdump] / print-pgm.c
1 /*
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that: (1) source code
4 * distributions retain the above copyright notice and this paragraph
5 * in its entirety, and (2) distributions including binary code include
6 * the above copyright notice and this paragraph in its entirety in
7 * the documentation or other materials provided with the distribution.
8 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
9 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
10 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
11 * FOR A PARTICULAR PURPOSE.
12 *
13 * Original code by Andy Heffernan (ahh@juniper.net)
14 */
15
16 #define NETDISSECT_REWORKED
17 #ifdef HAVE_CONFIG_H
18 #include "config.h"
19 #endif
20
21 #include <tcpdump-stdinc.h>
22
23 #include "interface.h"
24 #include "extract.h"
25 #include "addrtoname.h"
26
27 #include "ip.h"
28 #ifdef INET6
29 #include "ip6.h"
30 #endif
31 #include "ipproto.h"
32 #include "af.h"
33
34 /*
35 * PGM header (RFC 3208)
36 */
37 struct pgm_header {
38 uint16_t pgm_sport;
39 uint16_t pgm_dport;
40 uint8_t pgm_type;
41 uint8_t pgm_options;
42 uint16_t pgm_sum;
43 uint8_t pgm_gsid[6];
44 uint16_t pgm_length;
45 };
46
47 struct pgm_spm {
48 uint32_t pgms_seq;
49 uint32_t pgms_trailseq;
50 uint32_t pgms_leadseq;
51 uint16_t pgms_nla_afi;
52 uint16_t pgms_reserved;
53 /* ... uint8_t pgms_nla[0]; */
54 /* ... options */
55 };
56
57 struct pgm_nak {
58 uint32_t pgmn_seq;
59 uint16_t pgmn_source_afi;
60 uint16_t pgmn_reserved;
61 /* ... uint8_t pgmn_source[0]; */
62 /* ... uint16_t pgmn_group_afi */
63 /* ... uint16_t pgmn_reserved2; */
64 /* ... uint8_t pgmn_group[0]; */
65 /* ... options */
66 };
67
68 struct pgm_ack {
69 uint32_t pgma_rx_max_seq;
70 uint32_t pgma_bitmap;
71 /* ... options */
72 };
73
74 struct pgm_poll {
75 uint32_t pgmp_seq;
76 uint16_t pgmp_round;
77 uint16_t pgmp_reserved;
78 /* ... options */
79 };
80
81 struct pgm_polr {
82 uint32_t pgmp_seq;
83 uint16_t pgmp_round;
84 uint16_t pgmp_subtype;
85 uint16_t pgmp_nla_afi;
86 uint16_t pgmp_reserved;
87 /* ... uint8_t pgmp_nla[0]; */
88 /* ... options */
89 };
90
91 struct pgm_data {
92 uint32_t pgmd_seq;
93 uint32_t pgmd_trailseq;
94 /* ... options */
95 };
96
97 typedef enum _pgm_type {
98 PGM_SPM = 0, /* source path message */
99 PGM_POLL = 1, /* POLL Request */
100 PGM_POLR = 2, /* POLL Response */
101 PGM_ODATA = 4, /* original data */
102 PGM_RDATA = 5, /* repair data */
103 PGM_NAK = 8, /* NAK */
104 PGM_NULLNAK = 9, /* Null NAK */
105 PGM_NCF = 10, /* NAK Confirmation */
106 PGM_ACK = 11, /* ACK for congestion control */
107 PGM_SPMR = 12, /* SPM request */
108 PGM_MAX = 255
109 } pgm_type;
110
111 #define PGM_OPT_BIT_PRESENT 0x01
112 #define PGM_OPT_BIT_NETWORK 0x02
113 #define PGM_OPT_BIT_VAR_PKTLEN 0x40
114 #define PGM_OPT_BIT_PARITY 0x80
115
116 #define PGM_OPT_LENGTH 0x00
117 #define PGM_OPT_FRAGMENT 0x01
118 #define PGM_OPT_NAK_LIST 0x02
119 #define PGM_OPT_JOIN 0x03
120 #define PGM_OPT_NAK_BO_IVL 0x04
121 #define PGM_OPT_NAK_BO_RNG 0x05
122
123 #define PGM_OPT_REDIRECT 0x07
124 #define PGM_OPT_PARITY_PRM 0x08
125 #define PGM_OPT_PARITY_GRP 0x09
126 #define PGM_OPT_CURR_TGSIZE 0x0A
127 #define PGM_OPT_NBR_UNREACH 0x0B
128 #define PGM_OPT_PATH_NLA 0x0C
129
130 #define PGM_OPT_SYN 0x0D
131 #define PGM_OPT_FIN 0x0E
132 #define PGM_OPT_RST 0x0F
133 #define PGM_OPT_CR 0x10
134 #define PGM_OPT_CRQST 0x11
135
136 #define PGM_OPT_PGMCC_DATA 0x12
137 #define PGM_OPT_PGMCC_FEEDBACK 0x13
138
139 #define PGM_OPT_MASK 0x7f
140
141 #define PGM_OPT_END 0x80 /* end of options marker */
142
143 #define PGM_MIN_OPT_LEN 4
144
145 void
146 pgm_print(netdissect_options *ndo,
147 register const u_char *bp, register u_int length,
148 register const u_char *bp2)
149 {
150 register const struct pgm_header *pgm;
151 register const struct ip *ip;
152 register char ch;
153 uint16_t sport, dport;
154 int addr_size;
155 const void *nla;
156 int nla_af;
157 #ifdef INET6
158 char nla_buf[INET6_ADDRSTRLEN];
159 register const struct ip6_hdr *ip6;
160 #else
161 char nla_buf[INET_ADDRSTRLEN];
162 #endif
163 uint8_t opt_type, opt_len;
164 uint32_t seq, opts_len, len, offset;
165
166 pgm = (struct pgm_header *)bp;
167 ip = (struct ip *)bp2;
168 #ifdef INET6
169 if (IP_V(ip) == 6)
170 ip6 = (struct ip6_hdr *)bp2;
171 else
172 ip6 = NULL;
173 #else /* INET6 */
174 if (IP_V(ip) == 6) {
175 ND_PRINT((ndo, "Can't handle IPv6"));
176 return;
177 }
178 #endif /* INET6 */
179 ch = '\0';
180 if (!ND_TTEST(pgm->pgm_dport)) {
181 #ifdef INET6
182 if (ip6) {
183 ND_PRINT((ndo, "%s > %s: [|pgm]",
184 ip6addr_string(ndo, &ip6->ip6_src),
185 ip6addr_string(ndo, &ip6->ip6_dst)));
186 return;
187 } else
188 #endif /* INET6 */
189 {
190 ND_PRINT((ndo, "%s > %s: [|pgm]",
191 ipaddr_string(ndo, &ip->ip_src),
192 ipaddr_string(ndo, &ip->ip_dst)));
193 return;
194 }
195 }
196
197 sport = EXTRACT_16BITS(&pgm->pgm_sport);
198 dport = EXTRACT_16BITS(&pgm->pgm_dport);
199
200 #ifdef INET6
201 if (ip6) {
202 if (ip6->ip6_nxt == IPPROTO_PGM) {
203 ND_PRINT((ndo, "%s.%s > %s.%s: ",
204 ip6addr_string(ndo, &ip6->ip6_src),
205 tcpport_string(sport),
206 ip6addr_string(ndo, &ip6->ip6_dst),
207 tcpport_string(dport)));
208 } else {
209 ND_PRINT((ndo, "%s > %s: ",
210 tcpport_string(sport), tcpport_string(dport)));
211 }
212 } else
213 #endif /*INET6*/
214 {
215 if (ip->ip_p == IPPROTO_PGM) {
216 ND_PRINT((ndo, "%s.%s > %s.%s: ",
217 ipaddr_string(ndo, &ip->ip_src),
218 tcpport_string(sport),
219 ipaddr_string(ndo, &ip->ip_dst),
220 tcpport_string(dport)));
221 } else {
222 ND_PRINT((ndo, "%s > %s: ",
223 tcpport_string(sport), tcpport_string(dport)));
224 }
225 }
226
227 ND_TCHECK(*pgm);
228
229 ND_PRINT((ndo, "PGM, length %u", EXTRACT_16BITS(&pgm->pgm_length)));
230
231 if (!ndo->ndo_vflag)
232 return;
233
234 ND_PRINT((ndo, " 0x%02x%02x%02x%02x%02x%02x ",
235 pgm->pgm_gsid[0],
236 pgm->pgm_gsid[1],
237 pgm->pgm_gsid[2],
238 pgm->pgm_gsid[3],
239 pgm->pgm_gsid[4],
240 pgm->pgm_gsid[5]));
241 switch (pgm->pgm_type) {
242 case PGM_SPM: {
243 struct pgm_spm *spm;
244
245 spm = (struct pgm_spm *)(pgm + 1);
246 ND_TCHECK(*spm);
247
248 switch (EXTRACT_16BITS(&spm->pgms_nla_afi)) {
249 case AFNUM_INET:
250 addr_size = sizeof(struct in_addr);
251 nla_af = AF_INET;
252 break;
253 #ifdef INET6
254 case AFNUM_INET6:
255 addr_size = sizeof(struct in6_addr);
256 nla_af = AF_INET6;
257 break;
258 #endif
259 default:
260 goto trunc;
261 break;
262 }
263 bp = (u_char *) (spm + 1);
264 ND_TCHECK2(*bp, addr_size);
265 nla = bp;
266 bp += addr_size;
267
268 inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
269 ND_PRINT((ndo, "SPM seq %u trail %u lead %u nla %s",
270 EXTRACT_32BITS(&spm->pgms_seq),
271 EXTRACT_32BITS(&spm->pgms_trailseq),
272 EXTRACT_32BITS(&spm->pgms_leadseq),
273 nla_buf));
274 break;
275 }
276
277 case PGM_POLL: {
278 struct pgm_poll *poll;
279
280 poll = (struct pgm_poll *)(pgm + 1);
281 ND_TCHECK(*poll);
282 ND_PRINT((ndo, "POLL seq %u round %u",
283 EXTRACT_32BITS(&poll->pgmp_seq),
284 EXTRACT_16BITS(&poll->pgmp_round)));
285 bp = (u_char *) (poll + 1);
286 break;
287 }
288 case PGM_POLR: {
289 struct pgm_polr *polr;
290 uint32_t ivl, rnd, mask;
291
292 polr = (struct pgm_polr *)(pgm + 1);
293 ND_TCHECK(*polr);
294
295 switch (EXTRACT_16BITS(&polr->pgmp_nla_afi)) {
296 case AFNUM_INET:
297 addr_size = sizeof(struct in_addr);
298 nla_af = AF_INET;
299 break;
300 #ifdef INET6
301 case AFNUM_INET6:
302 addr_size = sizeof(struct in6_addr);
303 nla_af = AF_INET6;
304 break;
305 #endif
306 default:
307 goto trunc;
308 break;
309 }
310 bp = (u_char *) (polr + 1);
311 ND_TCHECK2(*bp, addr_size);
312 nla = bp;
313 bp += addr_size;
314
315 inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
316
317 ND_TCHECK2(*bp, sizeof(uint32_t));
318 ivl = EXTRACT_32BITS(bp);
319 bp += sizeof(uint32_t);
320
321 ND_TCHECK2(*bp, sizeof(uint32_t));
322 rnd = EXTRACT_32BITS(bp);
323 bp += sizeof(uint32_t);
324
325 ND_TCHECK2(*bp, sizeof(uint32_t));
326 mask = EXTRACT_32BITS(bp);
327 bp += sizeof(uint32_t);
328
329 ND_PRINT((ndo, "POLR seq %u round %u nla %s ivl %u rnd 0x%08x "
330 "mask 0x%08x", EXTRACT_32BITS(&polr->pgmp_seq),
331 EXTRACT_16BITS(&polr->pgmp_round), nla_buf, ivl, rnd, mask));
332 break;
333 }
334 case PGM_ODATA: {
335 struct pgm_data *odata;
336
337 odata = (struct pgm_data *)(pgm + 1);
338 ND_TCHECK(*odata);
339 ND_PRINT((ndo, "ODATA trail %u seq %u",
340 EXTRACT_32BITS(&odata->pgmd_trailseq),
341 EXTRACT_32BITS(&odata->pgmd_seq)));
342 bp = (u_char *) (odata + 1);
343 break;
344 }
345
346 case PGM_RDATA: {
347 struct pgm_data *rdata;
348
349 rdata = (struct pgm_data *)(pgm + 1);
350 ND_TCHECK(*rdata);
351 ND_PRINT((ndo, "RDATA trail %u seq %u",
352 EXTRACT_32BITS(&rdata->pgmd_trailseq),
353 EXTRACT_32BITS(&rdata->pgmd_seq)));
354 bp = (u_char *) (rdata + 1);
355 break;
356 }
357
358 case PGM_NAK:
359 case PGM_NULLNAK:
360 case PGM_NCF: {
361 struct pgm_nak *nak;
362 const void *source, *group;
363 int source_af, group_af;
364 #ifdef INET6
365 char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN];
366 #else
367 char source_buf[INET_ADDRSTRLEN], group_buf[INET_ADDRSTRLEN];
368 #endif
369
370 nak = (struct pgm_nak *)(pgm + 1);
371 ND_TCHECK(*nak);
372
373 /*
374 * Skip past the source, saving info along the way
375 * and stopping if we don't have enough.
376 */
377 switch (EXTRACT_16BITS(&nak->pgmn_source_afi)) {
378 case AFNUM_INET:
379 addr_size = sizeof(struct in_addr);
380 source_af = AF_INET;
381 break;
382 #ifdef INET6
383 case AFNUM_INET6:
384 addr_size = sizeof(struct in6_addr);
385 source_af = AF_INET6;
386 break;
387 #endif
388 default:
389 goto trunc;
390 break;
391 }
392 bp = (u_char *) (nak + 1);
393 ND_TCHECK2(*bp, addr_size);
394 source = bp;
395 bp += addr_size;
396
397 /*
398 * Skip past the group, saving info along the way
399 * and stopping if we don't have enough.
400 */
401 switch (EXTRACT_16BITS(bp)) {
402 case AFNUM_INET:
403 addr_size = sizeof(struct in_addr);
404 group_af = AF_INET;
405 break;
406 #ifdef INET6
407 case AFNUM_INET6:
408 addr_size = sizeof(struct in6_addr);
409 group_af = AF_INET6;
410 break;
411 #endif
412 default:
413 goto trunc;
414 break;
415 }
416 bp += (2 * sizeof(uint16_t));
417 ND_TCHECK2(*bp, addr_size);
418 group = bp;
419 bp += addr_size;
420
421 /*
422 * Options decoding can go here.
423 */
424 inet_ntop(source_af, source, source_buf, sizeof(source_buf));
425 inet_ntop(group_af, group, group_buf, sizeof(group_buf));
426 switch (pgm->pgm_type) {
427 case PGM_NAK:
428 ND_PRINT((ndo, "NAK "));
429 break;
430 case PGM_NULLNAK:
431 ND_PRINT((ndo, "NNAK "));
432 break;
433 case PGM_NCF:
434 ND_PRINT((ndo, "NCF "));
435 break;
436 default:
437 break;
438 }
439 ND_PRINT((ndo, "(%s -> %s), seq %u",
440 source_buf, group_buf, EXTRACT_32BITS(&nak->pgmn_seq)));
441 break;
442 }
443
444 case PGM_ACK: {
445 struct pgm_ack *ack;
446
447 ack = (struct pgm_ack *)(pgm + 1);
448 ND_TCHECK(*ack);
449 ND_PRINT((ndo, "ACK seq %u",
450 EXTRACT_32BITS(&ack->pgma_rx_max_seq)));
451 bp = (u_char *) (ack + 1);
452 break;
453 }
454
455 case PGM_SPMR:
456 ND_PRINT((ndo, "SPMR"));
457 break;
458
459 default:
460 ND_PRINT((ndo, "UNKNOWN type 0x%02x", pgm->pgm_type));
461 break;
462
463 }
464 if (pgm->pgm_options & PGM_OPT_BIT_PRESENT) {
465
466 /*
467 * make sure there's enough for the first option header
468 */
469 if (!ND_TTEST2(*bp, PGM_MIN_OPT_LEN)) {
470 ND_PRINT((ndo, "[|OPT]"));
471 return;
472 }
473
474 /*
475 * That option header MUST be an OPT_LENGTH option
476 * (see the first paragraph of section 9.1 in RFC 3208).
477 */
478 opt_type = *bp++;
479 if ((opt_type & PGM_OPT_MASK) != PGM_OPT_LENGTH) {
480 ND_PRINT((ndo, "[First option bad, should be PGM_OPT_LENGTH, is %u]", opt_type & PGM_OPT_MASK));
481 return;
482 }
483 opt_len = *bp++;
484 if (opt_len != 4) {
485 ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != 4]", opt_len));
486 return;
487 }
488 opts_len = EXTRACT_16BITS(bp);
489 if (opts_len < 4) {
490 ND_PRINT((ndo, "[Bad total option length %u < 4]", opts_len));
491 return;
492 }
493 bp += sizeof(uint16_t);
494 ND_PRINT((ndo, " OPTS LEN %d", opts_len));
495 opts_len -= 4;
496
497 while (opts_len) {
498 if (opts_len < PGM_MIN_OPT_LEN) {
499 ND_PRINT((ndo, "[Total option length leaves no room for final option]"));
500 return;
501 }
502 opt_type = *bp++;
503 opt_len = *bp++;
504 if (opt_len < PGM_MIN_OPT_LEN) {
505 ND_PRINT((ndo, "[Bad option, length %u < %u]", opt_len,
506 PGM_MIN_OPT_LEN));
507 break;
508 }
509 if (opts_len < opt_len) {
510 ND_PRINT((ndo, "[Total option length leaves no room for final option]"));
511 return;
512 }
513 if (!ND_TTEST2(*bp, opt_len - 2)) {
514 ND_PRINT((ndo, " [|OPT]"));
515 return;
516 }
517
518 switch (opt_type & PGM_OPT_MASK) {
519 case PGM_OPT_LENGTH:
520 if (opt_len != 4) {
521 ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != 4]", opt_len));
522 return;
523 }
524 ND_PRINT((ndo, " OPTS LEN (extra?) %d", EXTRACT_16BITS(bp)));
525 bp += sizeof(uint16_t);
526 opts_len -= 4;
527 break;
528
529 case PGM_OPT_FRAGMENT:
530 if (opt_len != 16) {
531 ND_PRINT((ndo, "[Bad OPT_FRAGMENT option, length %u != 16]", opt_len));
532 return;
533 }
534 bp += 2;
535 seq = EXTRACT_32BITS(bp);
536 bp += sizeof(uint32_t);
537 offset = EXTRACT_32BITS(bp);
538 bp += sizeof(uint32_t);
539 len = EXTRACT_32BITS(bp);
540 bp += sizeof(uint32_t);
541 ND_PRINT((ndo, " FRAG seq %u off %u len %u", seq, offset, len));
542 opts_len -= 16;
543 break;
544
545 case PGM_OPT_NAK_LIST:
546 bp += 2;
547 opt_len -= sizeof(uint32_t); /* option header */
548 ND_PRINT((ndo, " NAK LIST"));
549 while (opt_len) {
550 if (opt_len < sizeof(uint32_t)) {
551 ND_PRINT((ndo, "[Option length not a multiple of 4]"));
552 return;
553 }
554 ND_TCHECK2(*bp, sizeof(uint32_t));
555 ND_PRINT((ndo, " %u", EXTRACT_32BITS(bp)));
556 bp += sizeof(uint32_t);
557 opt_len -= sizeof(uint32_t);
558 opts_len -= sizeof(uint32_t);
559 }
560 break;
561
562 case PGM_OPT_JOIN:
563 if (opt_len != 8) {
564 ND_PRINT((ndo, "[Bad OPT_JOIN option, length %u != 8]", opt_len));
565 return;
566 }
567 bp += 2;
568 seq = EXTRACT_32BITS(bp);
569 bp += sizeof(uint32_t);
570 ND_PRINT((ndo, " JOIN %u", seq));
571 opts_len -= 8;
572 break;
573
574 case PGM_OPT_NAK_BO_IVL:
575 if (opt_len != 12) {
576 ND_PRINT((ndo, "[Bad OPT_NAK_BO_IVL option, length %u != 12]", opt_len));
577 return;
578 }
579 bp += 2;
580 offset = EXTRACT_32BITS(bp);
581 bp += sizeof(uint32_t);
582 seq = EXTRACT_32BITS(bp);
583 bp += sizeof(uint32_t);
584 ND_PRINT((ndo, " BACKOFF ivl %u ivlseq %u", offset, seq));
585 opts_len -= 12;
586 break;
587
588 case PGM_OPT_NAK_BO_RNG:
589 if (opt_len != 12) {
590 ND_PRINT((ndo, "[Bad OPT_NAK_BO_RNG option, length %u != 12]", opt_len));
591 return;
592 }
593 bp += 2;
594 offset = EXTRACT_32BITS(bp);
595 bp += sizeof(uint32_t);
596 seq = EXTRACT_32BITS(bp);
597 bp += sizeof(uint32_t);
598 ND_PRINT((ndo, " BACKOFF max %u min %u", offset, seq));
599 opts_len -= 12;
600 break;
601
602 case PGM_OPT_REDIRECT:
603 bp += 2;
604 switch (EXTRACT_16BITS(bp)) {
605 case AFNUM_INET:
606 addr_size = sizeof(struct in_addr);
607 nla_af = AF_INET;
608 break;
609 #ifdef INET6
610 case AFNUM_INET6:
611 addr_size = sizeof(struct in6_addr);
612 nla_af = AF_INET6;
613 break;
614 #endif
615 default:
616 goto trunc;
617 break;
618 }
619 bp += (2 * sizeof(uint16_t));
620 if (opt_len != 4 + addr_size) {
621 ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len));
622 return;
623 }
624 ND_TCHECK2(*bp, addr_size);
625 nla = bp;
626 bp += addr_size;
627
628 inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
629 ND_PRINT((ndo, " REDIRECT %s", (char *)nla));
630 opts_len -= 4 + addr_size;
631 break;
632
633 case PGM_OPT_PARITY_PRM:
634 if (opt_len != 8) {
635 ND_PRINT((ndo, "[Bad OPT_PARITY_PRM option, length %u != 8]", opt_len));
636 return;
637 }
638 bp += 2;
639 len = EXTRACT_32BITS(bp);
640 bp += sizeof(uint32_t);
641 ND_PRINT((ndo, " PARITY MAXTGS %u", len));
642 opts_len -= 8;
643 break;
644
645 case PGM_OPT_PARITY_GRP:
646 if (opt_len != 8) {
647 ND_PRINT((ndo, "[Bad OPT_PARITY_GRP option, length %u != 8]", opt_len));
648 return;
649 }
650 bp += 2;
651 seq = EXTRACT_32BITS(bp);
652 bp += sizeof(uint32_t);
653 ND_PRINT((ndo, " PARITY GROUP %u", seq));
654 opts_len -= 8;
655 break;
656
657 case PGM_OPT_CURR_TGSIZE:
658 if (opt_len != 8) {
659 ND_PRINT((ndo, "[Bad OPT_CURR_TGSIZE option, length %u != 8]", opt_len));
660 return;
661 }
662 bp += 2;
663 len = EXTRACT_32BITS(bp);
664 bp += sizeof(uint32_t);
665 ND_PRINT((ndo, " PARITY ATGS %u", len));
666 opts_len -= 8;
667 break;
668
669 case PGM_OPT_NBR_UNREACH:
670 if (opt_len != 4) {
671 ND_PRINT((ndo, "[Bad OPT_NBR_UNREACH option, length %u != 4]", opt_len));
672 return;
673 }
674 bp += 2;
675 ND_PRINT((ndo, " NBR_UNREACH"));
676 opts_len -= 4;
677 break;
678
679 case PGM_OPT_PATH_NLA:
680 ND_PRINT((ndo, " PATH_NLA [%d]", opt_len));
681 bp += opt_len;
682 opts_len -= opt_len;
683 break;
684
685 case PGM_OPT_SYN:
686 if (opt_len != 4) {
687 ND_PRINT((ndo, "[Bad OPT_SYN option, length %u != 4]", opt_len));
688 return;
689 }
690 bp += 2;
691 ND_PRINT((ndo, " SYN"));
692 opts_len -= 4;
693 break;
694
695 case PGM_OPT_FIN:
696 if (opt_len != 4) {
697 ND_PRINT((ndo, "[Bad OPT_FIN option, length %u != 4]", opt_len));
698 return;
699 }
700 bp += 2;
701 ND_PRINT((ndo, " FIN"));
702 opts_len -= 4;
703 break;
704
705 case PGM_OPT_RST:
706 if (opt_len != 4) {
707 ND_PRINT((ndo, "[Bad OPT_RST option, length %u != 4]", opt_len));
708 return;
709 }
710 bp += 2;
711 ND_PRINT((ndo, " RST"));
712 opts_len -= 4;
713 break;
714
715 case PGM_OPT_CR:
716 ND_PRINT((ndo, " CR"));
717 bp += opt_len;
718 opts_len -= opt_len;
719 break;
720
721 case PGM_OPT_CRQST:
722 if (opt_len != 4) {
723 ND_PRINT((ndo, "[Bad OPT_CRQST option, length %u != 4]", opt_len));
724 return;
725 }
726 bp += 2;
727 ND_PRINT((ndo, " CRQST"));
728 opts_len -= 4;
729 break;
730
731 case PGM_OPT_PGMCC_DATA:
732 bp += 2;
733 offset = EXTRACT_32BITS(bp);
734 bp += sizeof(uint32_t);
735 switch (EXTRACT_16BITS(bp)) {
736 case AFNUM_INET:
737 addr_size = sizeof(struct in_addr);
738 nla_af = AF_INET;
739 break;
740 #ifdef INET6
741 case AFNUM_INET6:
742 addr_size = sizeof(struct in6_addr);
743 nla_af = AF_INET6;
744 break;
745 #endif
746 default:
747 goto trunc;
748 break;
749 }
750 bp += (2 * sizeof(uint16_t));
751 if (opt_len != 12 + addr_size) {
752 ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
753 return;
754 }
755 ND_TCHECK2(*bp, addr_size);
756 nla = bp;
757 bp += addr_size;
758
759 inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
760 ND_PRINT((ndo, " PGMCC DATA %u %s", offset, (char*)nla));
761 opts_len -= 16;
762 break;
763
764 case PGM_OPT_PGMCC_FEEDBACK:
765 bp += 2;
766 offset = EXTRACT_32BITS(bp);
767 bp += sizeof(uint32_t);
768 switch (EXTRACT_16BITS(bp)) {
769 case AFNUM_INET:
770 addr_size = sizeof(struct in_addr);
771 nla_af = AF_INET;
772 break;
773 #ifdef INET6
774 case AFNUM_INET6:
775 addr_size = sizeof(struct in6_addr);
776 nla_af = AF_INET6;
777 break;
778 #endif
779 default:
780 goto trunc;
781 break;
782 }
783 bp += (2 * sizeof(uint16_t));
784 if (opt_len != 12 + addr_size) {
785 ND_PRINT((ndo, "[Bad OPT_PGMCC_FEEDBACK option, length %u != 12 + address size]", opt_len));
786 return;
787 }
788 ND_TCHECK2(*bp, addr_size);
789 nla = bp;
790 bp += addr_size;
791
792 inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
793 ND_PRINT((ndo, " PGMCC FEEDBACK %u %s", offset, (char*)nla));
794 opts_len -= 16;
795 break;
796
797 default:
798 ND_PRINT((ndo, " OPT_%02X [%d] ", opt_type, opt_len));
799 bp += opt_len;
800 opts_len -= opt_len;
801 break;
802 }
803
804 if (opt_type & PGM_OPT_END)
805 break;
806 }
807 }
808
809 ND_PRINT((ndo, " [%u]", length));
810 if (ndo->ndo_packettype == PT_PGM_ZMTP1 &&
811 (pgm->pgm_type == PGM_ODATA || pgm->pgm_type == PGM_RDATA))
812 zmtp1_print_datagram(ndo, bp, EXTRACT_16BITS(&pgm->pgm_length));
813
814 return;
815
816 trunc:
817 ND_PRINT((ndo, "[|pgm]"));
818 if (ch != '\0')
819 ND_PRINT((ndo, ">"));
820 }
[mirror] the TCPdump network dissector