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update libressl to v2.7.4
[unleashed.git] / contrib / tcpdump / print-pgm.c
blob8340f2c3eb43f5d05f0ba7048f78efbfa84e6635
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 /* \summary: Pragmatic General Multicast (PGM) printer */
17
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21
22 #include <netdissect-stdinc.h>
23
24 #include "netdissect.h"
25 #include "extract.h"
26 #include "addrtoname.h"
27 #include "addrtostr.h"
28
29 #include "ip.h"
30 #include "ip6.h"
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 u_int nla_afnum;
155 char nla_buf[INET6_ADDRSTRLEN];
156 register const struct ip6_hdr *ip6;
157 uint8_t opt_type, opt_len;
158 uint32_t seq, opts_len, len, offset;
159
160 pgm = (const struct pgm_header *)bp;
161 ip = (const struct ip *)bp2;
162 if (IP_V(ip) == 6)
163 ip6 = (const struct ip6_hdr *)bp2;
164 else
165 ip6 = NULL;
166 ch = '\0';
167 if (!ND_TTEST(pgm->pgm_dport)) {
168 if (ip6) {
169 ND_PRINT((ndo, "%s > %s: [|pgm]",
170 ip6addr_string(ndo, &ip6->ip6_src),
171 ip6addr_string(ndo, &ip6->ip6_dst)));
172 } else {
173 ND_PRINT((ndo, "%s > %s: [|pgm]",
174 ipaddr_string(ndo, &ip->ip_src),
175 ipaddr_string(ndo, &ip->ip_dst)));
176 }
177 return;
178 }
179
180 sport = EXTRACT_16BITS(&pgm->pgm_sport);
181 dport = EXTRACT_16BITS(&pgm->pgm_dport);
182
183 if (ip6) {
184 if (ip6->ip6_nxt == IPPROTO_PGM) {
185 ND_PRINT((ndo, "%s.%s > %s.%s: ",
186 ip6addr_string(ndo, &ip6->ip6_src),
187 tcpport_string(ndo, sport),
188 ip6addr_string(ndo, &ip6->ip6_dst),
189 tcpport_string(ndo, dport)));
190 } else {
191 ND_PRINT((ndo, "%s > %s: ",
192 tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
193 }
194 } else {
195 if (ip->ip_p == IPPROTO_PGM) {
196 ND_PRINT((ndo, "%s.%s > %s.%s: ",
197 ipaddr_string(ndo, &ip->ip_src),
198 tcpport_string(ndo, sport),
199 ipaddr_string(ndo, &ip->ip_dst),
200 tcpport_string(ndo, dport)));
201 } else {
202 ND_PRINT((ndo, "%s > %s: ",
203 tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
204 }
205 }
206
207 ND_TCHECK(*pgm);
208
209 ND_PRINT((ndo, "PGM, length %u", EXTRACT_16BITS(&pgm->pgm_length)));
210
211 if (!ndo->ndo_vflag)
212 return;
213
214 ND_PRINT((ndo, " 0x%02x%02x%02x%02x%02x%02x ",
215 pgm->pgm_gsid[0],
216 pgm->pgm_gsid[1],
217 pgm->pgm_gsid[2],
218 pgm->pgm_gsid[3],
219 pgm->pgm_gsid[4],
220 pgm->pgm_gsid[5]));
221 switch (pgm->pgm_type) {
222 case PGM_SPM: {
223 const struct pgm_spm *spm;
224
225 spm = (const struct pgm_spm *)(pgm + 1);
226 ND_TCHECK(*spm);
227 bp = (const u_char *) (spm + 1);
228
229 switch (EXTRACT_16BITS(&spm->pgms_nla_afi)) {
230 case AFNUM_INET:
231 ND_TCHECK2(*bp, sizeof(struct in_addr));
232 addrtostr(bp, nla_buf, sizeof(nla_buf));
233 bp += sizeof(struct in_addr);
234 break;
235 case AFNUM_INET6:
236 ND_TCHECK2(*bp, sizeof(struct in6_addr));
237 addrtostr6(bp, nla_buf, sizeof(nla_buf));
238 bp += sizeof(struct in6_addr);
239 break;
240 default:
241 goto trunc;
242 break;
243 }
244
245 ND_PRINT((ndo, "SPM seq %u trail %u lead %u nla %s",
246 EXTRACT_32BITS(&spm->pgms_seq),
247 EXTRACT_32BITS(&spm->pgms_trailseq),
248 EXTRACT_32BITS(&spm->pgms_leadseq),
249 nla_buf));
250 break;
251 }
252
253 case PGM_POLL: {
254 const struct pgm_poll *poll_msg;
255
256 poll_msg = (const struct pgm_poll *)(pgm + 1);
257 ND_TCHECK(*poll_msg);
258 ND_PRINT((ndo, "POLL seq %u round %u",
259 EXTRACT_32BITS(&poll_msg->pgmp_seq),
260 EXTRACT_16BITS(&poll_msg->pgmp_round)));
261 bp = (const u_char *) (poll_msg + 1);
262 break;
263 }
264 case PGM_POLR: {
265 const struct pgm_polr *polr;
266 uint32_t ivl, rnd, mask;
267
268 polr = (const struct pgm_polr *)(pgm + 1);
269 ND_TCHECK(*polr);
270 bp = (const u_char *) (polr + 1);
271
272 switch (EXTRACT_16BITS(&polr->pgmp_nla_afi)) {
273 case AFNUM_INET:
274 ND_TCHECK2(*bp, sizeof(struct in_addr));
275 addrtostr(bp, nla_buf, sizeof(nla_buf));
276 bp += sizeof(struct in_addr);
277 break;
278 case AFNUM_INET6:
279 ND_TCHECK2(*bp, sizeof(struct in6_addr));
280 addrtostr6(bp, nla_buf, sizeof(nla_buf));
281 bp += sizeof(struct in6_addr);
282 break;
283 default:
284 goto trunc;
285 break;
286 }
287
288 ND_TCHECK2(*bp, sizeof(uint32_t));
289 ivl = EXTRACT_32BITS(bp);
290 bp += sizeof(uint32_t);
291
292 ND_TCHECK2(*bp, sizeof(uint32_t));
293 rnd = EXTRACT_32BITS(bp);
294 bp += sizeof(uint32_t);
295
296 ND_TCHECK2(*bp, sizeof(uint32_t));
297 mask = EXTRACT_32BITS(bp);
298 bp += sizeof(uint32_t);
299
300 ND_PRINT((ndo, "POLR seq %u round %u nla %s ivl %u rnd 0x%08x "
301 "mask 0x%08x", EXTRACT_32BITS(&polr->pgmp_seq),
302 EXTRACT_16BITS(&polr->pgmp_round), nla_buf, ivl, rnd, mask));
303 break;
304 }
305 case PGM_ODATA: {
306 const struct pgm_data *odata;
307
308 odata = (const struct pgm_data *)(pgm + 1);
309 ND_TCHECK(*odata);
310 ND_PRINT((ndo, "ODATA trail %u seq %u",
311 EXTRACT_32BITS(&odata->pgmd_trailseq),
312 EXTRACT_32BITS(&odata->pgmd_seq)));
313 bp = (const u_char *) (odata + 1);
314 break;
315 }
316
317 case PGM_RDATA: {
318 const struct pgm_data *rdata;
319
320 rdata = (const struct pgm_data *)(pgm + 1);
321 ND_TCHECK(*rdata);
322 ND_PRINT((ndo, "RDATA trail %u seq %u",
323 EXTRACT_32BITS(&rdata->pgmd_trailseq),
324 EXTRACT_32BITS(&rdata->pgmd_seq)));
325 bp = (const u_char *) (rdata + 1);
326 break;
327 }
328
329 case PGM_NAK:
330 case PGM_NULLNAK:
331 case PGM_NCF: {
332 const struct pgm_nak *nak;
333 char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN];
334
335 nak = (const struct pgm_nak *)(pgm + 1);
336 ND_TCHECK(*nak);
337 bp = (const u_char *) (nak + 1);
338
339 /*
340 * Skip past the source, saving info along the way
341 * and stopping if we don't have enough.
342 */
343 switch (EXTRACT_16BITS(&nak->pgmn_source_afi)) {
344 case AFNUM_INET:
345 ND_TCHECK2(*bp, sizeof(struct in_addr));
346 addrtostr(bp, source_buf, sizeof(source_buf));
347 bp += sizeof(struct in_addr);
348 break;
349 case AFNUM_INET6:
350 ND_TCHECK2(*bp, sizeof(struct in6_addr));
351 addrtostr6(bp, source_buf, sizeof(source_buf));
352 bp += sizeof(struct in6_addr);
353 break;
354 default:
355 goto trunc;
356 break;
357 }
358
359 /*
360 * Skip past the group, saving info along the way
361 * and stopping if we don't have enough.
362 */
363 bp += (2 * sizeof(uint16_t));
364 ND_TCHECK_16BITS(bp);
365 switch (EXTRACT_16BITS(bp)) {
366 case AFNUM_INET:
367 ND_TCHECK2(*bp, sizeof(struct in_addr));
368 addrtostr(bp, group_buf, sizeof(group_buf));
369 bp += sizeof(struct in_addr);
370 break;
371 case AFNUM_INET6:
372 ND_TCHECK2(*bp, sizeof(struct in6_addr));
373 addrtostr6(bp, group_buf, sizeof(group_buf));
374 bp += sizeof(struct in6_addr);
375 break;
376 default:
377 goto trunc;
378 break;
379 }
380
381 /*
382 * Options decoding can go here.
383 */
384 switch (pgm->pgm_type) {
385 case PGM_NAK:
386 ND_PRINT((ndo, "NAK "));
387 break;
388 case PGM_NULLNAK:
389 ND_PRINT((ndo, "NNAK "));
390 break;
391 case PGM_NCF:
392 ND_PRINT((ndo, "NCF "));
393 break;
394 default:
395 break;
396 }
397 ND_PRINT((ndo, "(%s -> %s), seq %u",
398 source_buf, group_buf, EXTRACT_32BITS(&nak->pgmn_seq)));
399 break;
400 }
401
402 case PGM_ACK: {
403 const struct pgm_ack *ack;
404
405 ack = (const struct pgm_ack *)(pgm + 1);
406 ND_TCHECK(*ack);
407 ND_PRINT((ndo, "ACK seq %u",
408 EXTRACT_32BITS(&ack->pgma_rx_max_seq)));
409 bp = (const u_char *) (ack + 1);
410 break;
411 }
412
413 case PGM_SPMR:
414 ND_PRINT((ndo, "SPMR"));
415 break;
416
417 default:
418 ND_PRINT((ndo, "UNKNOWN type 0x%02x", pgm->pgm_type));
419 break;
420
421 }
422 if (pgm->pgm_options & PGM_OPT_BIT_PRESENT) {
423
424 /*
425 * make sure there's enough for the first option header
426 */
427 if (!ND_TTEST2(*bp, PGM_MIN_OPT_LEN)) {
428 ND_PRINT((ndo, "[|OPT]"));
429 return;
430 }
431
432 /*
433 * That option header MUST be an OPT_LENGTH option
434 * (see the first paragraph of section 9.1 in RFC 3208).
435 */
436 opt_type = *bp++;
437 if ((opt_type & PGM_OPT_MASK) != PGM_OPT_LENGTH) {
438 ND_PRINT((ndo, "[First option bad, should be PGM_OPT_LENGTH, is %u]", opt_type & PGM_OPT_MASK));
439 return;
440 }
441 opt_len = *bp++;
442 if (opt_len != 4) {
443 ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != 4]", opt_len));
444 return;
445 }
446 opts_len = EXTRACT_16BITS(bp);
447 if (opts_len < 4) {
448 ND_PRINT((ndo, "[Bad total option length %u < 4]", opts_len));
449 return;
450 }
451 bp += sizeof(uint16_t);
452 ND_PRINT((ndo, " OPTS LEN %d", opts_len));
453 opts_len -= 4;
454
455 while (opts_len) {
456 if (opts_len < PGM_MIN_OPT_LEN) {
457 ND_PRINT((ndo, "[Total option length leaves no room for final option]"));
458 return;
459 }
460 if (!ND_TTEST2(*bp, 2)) {
461 ND_PRINT((ndo, " [|OPT]"));
462 return;
463 }
464 opt_type = *bp++;
465 opt_len = *bp++;
466 if (opt_len < PGM_MIN_OPT_LEN) {
467 ND_PRINT((ndo, "[Bad option, length %u < %u]", opt_len,
468 PGM_MIN_OPT_LEN));
469 break;
470 }
471 if (opts_len < opt_len) {
472 ND_PRINT((ndo, "[Total option length leaves no room for final option]"));
473 return;
474 }
475 if (!ND_TTEST2(*bp, opt_len - 2)) {
476 ND_PRINT((ndo, " [|OPT]"));
477 return;
478 }
479
480 switch (opt_type & PGM_OPT_MASK) {
481 case PGM_OPT_LENGTH:
482 #define PGM_OPT_LENGTH_LEN (2+2)
483 if (opt_len != PGM_OPT_LENGTH_LEN) {
484 ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != %u]",
485 opt_len, PGM_OPT_LENGTH_LEN));
486 return;
487 }
488 ND_PRINT((ndo, " OPTS LEN (extra?) %d", EXTRACT_16BITS(bp)));
489 bp += 2;
490 opts_len -= PGM_OPT_LENGTH_LEN;
491 break;
492
493 case PGM_OPT_FRAGMENT:
494 #define PGM_OPT_FRAGMENT_LEN (2+2+4+4+4)
495 if (opt_len != PGM_OPT_FRAGMENT_LEN) {
496 ND_PRINT((ndo, "[Bad OPT_FRAGMENT option, length %u != %u]",
497 opt_len, PGM_OPT_FRAGMENT_LEN));
498 return;
499 }
500 bp += 2;
501 seq = EXTRACT_32BITS(bp);
502 bp += 4;
503 offset = EXTRACT_32BITS(bp);
504 bp += 4;
505 len = EXTRACT_32BITS(bp);
506 bp += 4;
507 ND_PRINT((ndo, " FRAG seq %u off %u len %u", seq, offset, len));
508 opts_len -= PGM_OPT_FRAGMENT_LEN;
509 break;
510
511 case PGM_OPT_NAK_LIST:
512 bp += 2;
513 opt_len -= 4; /* option header */
514 ND_PRINT((ndo, " NAK LIST"));
515 while (opt_len) {
516 if (opt_len < 4) {
517 ND_PRINT((ndo, "[Option length not a multiple of 4]"));
518 return;
519 }
520 ND_TCHECK2(*bp, 4);
521 ND_PRINT((ndo, " %u", EXTRACT_32BITS(bp)));
522 bp += 4;
523 opt_len -= 4;
524 opts_len -= 4;
525 }
526 break;
527
528 case PGM_OPT_JOIN:
529 #define PGM_OPT_JOIN_LEN (2+2+4)
530 if (opt_len != PGM_OPT_JOIN_LEN) {
531 ND_PRINT((ndo, "[Bad OPT_JOIN option, length %u != %u]",
532 opt_len, PGM_OPT_JOIN_LEN));
533 return;
534 }
535 bp += 2;
536 seq = EXTRACT_32BITS(bp);
537 bp += 4;
538 ND_PRINT((ndo, " JOIN %u", seq));
539 opts_len -= PGM_OPT_JOIN_LEN;
540 break;
541
542 case PGM_OPT_NAK_BO_IVL:
543 #define PGM_OPT_NAK_BO_IVL_LEN (2+2+4+4)
544 if (opt_len != PGM_OPT_NAK_BO_IVL_LEN) {
545 ND_PRINT((ndo, "[Bad OPT_NAK_BO_IVL option, length %u != %u]",
546 opt_len, PGM_OPT_NAK_BO_IVL_LEN));
547 return;
548 }
549 bp += 2;
550 offset = EXTRACT_32BITS(bp);
551 bp += 4;
552 seq = EXTRACT_32BITS(bp);
553 bp += 4;
554 ND_PRINT((ndo, " BACKOFF ivl %u ivlseq %u", offset, seq));
555 opts_len -= PGM_OPT_NAK_BO_IVL_LEN;
556 break;
557
558 case PGM_OPT_NAK_BO_RNG:
559 #define PGM_OPT_NAK_BO_RNG_LEN (2+2+4+4)
560 if (opt_len != PGM_OPT_NAK_BO_RNG_LEN) {
561 ND_PRINT((ndo, "[Bad OPT_NAK_BO_RNG option, length %u != %u]",
562 opt_len, PGM_OPT_NAK_BO_RNG_LEN));
563 return;
564 }
565 bp += 2;
566 offset = EXTRACT_32BITS(bp);
567 bp += 4;
568 seq = EXTRACT_32BITS(bp);
569 bp += 4;
570 ND_PRINT((ndo, " BACKOFF max %u min %u", offset, seq));
571 opts_len -= PGM_OPT_NAK_BO_RNG_LEN;
572 break;
573
574 case PGM_OPT_REDIRECT:
575 #define PGM_OPT_REDIRECT_FIXED_LEN (2+2+2+2)
576 if (opt_len < PGM_OPT_REDIRECT_FIXED_LEN) {
577 ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u < %u]",
578 opt_len, PGM_OPT_REDIRECT_FIXED_LEN));
579 return;
580 }
581 bp += 2;
582 nla_afnum = EXTRACT_16BITS(bp);
583 bp += 2+2;
584 switch (nla_afnum) {
585 case AFNUM_INET:
586 if (opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in_addr)) {
587 ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != %u + address size]",
588 opt_len, PGM_OPT_REDIRECT_FIXED_LEN));
589 return;
590 }
591 ND_TCHECK2(*bp, sizeof(struct in_addr));
592 addrtostr(bp, nla_buf, sizeof(nla_buf));
593 bp += sizeof(struct in_addr);
594 opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in_addr);
595 break;
596 case AFNUM_INET6:
597 if (opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in6_addr)) {
598 ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != %u + address size]",
599 PGM_OPT_REDIRECT_FIXED_LEN, opt_len));
600 return;
601 }
602 ND_TCHECK2(*bp, sizeof(struct in6_addr));
603 addrtostr6(bp, nla_buf, sizeof(nla_buf));
604 bp += sizeof(struct in6_addr);
605 opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in6_addr);
606 break;
607 default:
608 goto trunc;
609 break;
610 }
611
612 ND_PRINT((ndo, " REDIRECT %s", nla_buf));
613 break;
614
615 case PGM_OPT_PARITY_PRM:
616 #define PGM_OPT_PARITY_PRM_LEN (2+2+4)
617 if (opt_len != PGM_OPT_PARITY_PRM_LEN) {
618 ND_PRINT((ndo, "[Bad OPT_PARITY_PRM option, length %u != %u]",
619 opt_len, PGM_OPT_PARITY_PRM_LEN));
620 return;
621 }
622 bp += 2;
623 len = EXTRACT_32BITS(bp);
624 bp += 4;
625 ND_PRINT((ndo, " PARITY MAXTGS %u", len));
626 opts_len -= PGM_OPT_PARITY_PRM_LEN;
627 break;
628
629 case PGM_OPT_PARITY_GRP:
630 #define PGM_OPT_PARITY_GRP_LEN (2+2+4)
631 if (opt_len != PGM_OPT_PARITY_GRP_LEN) {
632 ND_PRINT((ndo, "[Bad OPT_PARITY_GRP option, length %u != %u]",
633 opt_len, PGM_OPT_PARITY_GRP_LEN));
634 return;
635 }
636 bp += 2;
637 seq = EXTRACT_32BITS(bp);
638 bp += 4;
639 ND_PRINT((ndo, " PARITY GROUP %u", seq));
640 opts_len -= PGM_OPT_PARITY_GRP_LEN;
641 break;
642
643 case PGM_OPT_CURR_TGSIZE:
644 #define PGM_OPT_CURR_TGSIZE_LEN (2+2+4)
645 if (opt_len != PGM_OPT_CURR_TGSIZE_LEN) {
646 ND_PRINT((ndo, "[Bad OPT_CURR_TGSIZE option, length %u != %u]",
647 opt_len, PGM_OPT_CURR_TGSIZE_LEN));
648 return;
649 }
650 bp += 2;
651 len = EXTRACT_32BITS(bp);
652 bp += 4;
653 ND_PRINT((ndo, " PARITY ATGS %u", len));
654 opts_len -= PGM_OPT_CURR_TGSIZE_LEN;
655 break;
656
657 case PGM_OPT_NBR_UNREACH:
658 #define PGM_OPT_NBR_UNREACH_LEN (2+2)
659 if (opt_len != PGM_OPT_NBR_UNREACH_LEN) {
660 ND_PRINT((ndo, "[Bad OPT_NBR_UNREACH option, length %u != %u]",
661 opt_len, PGM_OPT_NBR_UNREACH_LEN));
662 return;
663 }
664 bp += 2;
665 ND_PRINT((ndo, " NBR_UNREACH"));
666 opts_len -= PGM_OPT_NBR_UNREACH_LEN;
667 break;
668
669 case PGM_OPT_PATH_NLA:
670 ND_PRINT((ndo, " PATH_NLA [%d]", opt_len));
671 bp += opt_len;
672 opts_len -= opt_len;
673 break;
674
675 case PGM_OPT_SYN:
676 #define PGM_OPT_SYN_LEN (2+2)
677 if (opt_len != PGM_OPT_SYN_LEN) {
678 ND_PRINT((ndo, "[Bad OPT_SYN option, length %u != %u]",
679 opt_len, PGM_OPT_SYN_LEN));
680 return;
681 }
682 bp += 2;
683 ND_PRINT((ndo, " SYN"));
684 opts_len -= PGM_OPT_SYN_LEN;
685 break;
686
687 case PGM_OPT_FIN:
688 #define PGM_OPT_FIN_LEN (2+2)
689 if (opt_len != PGM_OPT_FIN_LEN) {
690 ND_PRINT((ndo, "[Bad OPT_FIN option, length %u != %u]",
691 opt_len, PGM_OPT_FIN_LEN));
692 return;
693 }
694 bp += 2;
695 ND_PRINT((ndo, " FIN"));
696 opts_len -= PGM_OPT_FIN_LEN;
697 break;
698
699 case PGM_OPT_RST:
700 #define PGM_OPT_RST_LEN (2+2)
701 if (opt_len != PGM_OPT_RST_LEN) {
702 ND_PRINT((ndo, "[Bad OPT_RST option, length %u != %u]",
703 opt_len, PGM_OPT_RST_LEN));
704 return;
705 }
706 bp += 2;
707 ND_PRINT((ndo, " RST"));
708 opts_len -= PGM_OPT_RST_LEN;
709 break;
710
711 case PGM_OPT_CR:
712 ND_PRINT((ndo, " CR"));
713 bp += opt_len;
714 opts_len -= opt_len;
715 break;
716
717 case PGM_OPT_CRQST:
718 #define PGM_OPT_CRQST_LEN (2+2)
719 if (opt_len != PGM_OPT_CRQST_LEN) {
720 ND_PRINT((ndo, "[Bad OPT_CRQST option, length %u != %u]",
721 opt_len, PGM_OPT_CRQST_LEN));
722 return;
723 }
724 bp += 2;
725 ND_PRINT((ndo, " CRQST"));
726 opts_len -= PGM_OPT_CRQST_LEN;
727 break;
728
729 case PGM_OPT_PGMCC_DATA:
730 #define PGM_OPT_PGMCC_DATA_FIXED_LEN (2+2+4+2+2)
731 if (opt_len < PGM_OPT_PGMCC_DATA_FIXED_LEN) {
732 ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u < %u]",
733 opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN));
734 return;
735 }
736 bp += 2;
737 offset = EXTRACT_32BITS(bp);
738 bp += 4;
739 nla_afnum = EXTRACT_16BITS(bp);
740 bp += 2+2;
741 switch (nla_afnum) {
742 case AFNUM_INET:
743 if (opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in_addr)) {
744 ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != %u + address size]",
745 opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN));
746 return;
747 }
748 ND_TCHECK2(*bp, sizeof(struct in_addr));
749 addrtostr(bp, nla_buf, sizeof(nla_buf));
750 bp += sizeof(struct in_addr);
751 opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in_addr);
752 break;
753 case AFNUM_INET6:
754 if (opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in6_addr)) {
755 ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != %u + address size]",
756 opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN));
757 return;
758 }
759 ND_TCHECK2(*bp, sizeof(struct in6_addr));
760 addrtostr6(bp, nla_buf, sizeof(nla_buf));
761 bp += sizeof(struct in6_addr);
762 opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in6_addr);
763 break;
764 default:
765 goto trunc;
766 break;
767 }
768
769 ND_PRINT((ndo, " PGMCC DATA %u %s", offset, nla_buf));
770 break;
771
772 case PGM_OPT_PGMCC_FEEDBACK:
773 #define PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN (2+2+4+2+2)
774 if (opt_len < PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN) {
775 ND_PRINT((ndo, "[Bad PGM_OPT_PGMCC_FEEDBACK option, length %u < %u]",
776 opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN));
777 return;
778 }
779 bp += 2;
780 offset = EXTRACT_32BITS(bp);
781 bp += 4;
782 nla_afnum = EXTRACT_16BITS(bp);
783 bp += 2+2;
784 switch (nla_afnum) {
785 case AFNUM_INET:
786 if (opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in_addr)) {
787 ND_PRINT((ndo, "[Bad OPT_PGMCC_FEEDBACK option, length %u != %u + address size]",
788 opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN));
789 return;
790 }
791 ND_TCHECK2(*bp, sizeof(struct in_addr));
792 addrtostr(bp, nla_buf, sizeof(nla_buf));
793 bp += sizeof(struct in_addr);
794 opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in_addr);
795 break;
796 case AFNUM_INET6:
797 if (opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in6_addr)) {
798 ND_PRINT((ndo, "[Bad OPT_PGMCC_FEEDBACK option, length %u != %u + address size]",
799 opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN));
800 return;
801 }
802 ND_TCHECK2(*bp, sizeof(struct in6_addr));
803 addrtostr6(bp, nla_buf, sizeof(nla_buf));
804 bp += sizeof(struct in6_addr);
805 opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in6_addr);
806 break;
807 default:
808 goto trunc;
809 break;
810 }
811
812 ND_PRINT((ndo, " PGMCC FEEDBACK %u %s", offset, nla_buf));
813 break;
814
815 default:
816 ND_PRINT((ndo, " OPT_%02X [%d] ", opt_type, opt_len));
817 bp += opt_len;
818 opts_len -= opt_len;
819 break;
820 }
821
822 if (opt_type & PGM_OPT_END)
823 break;
824 }
825 }
826
827 ND_PRINT((ndo, " [%u]", length));
828 if (ndo->ndo_packettype == PT_PGM_ZMTP1 &&
829 (pgm->pgm_type == PGM_ODATA || pgm->pgm_type == PGM_RDATA))
830 zmtp1_print_datagram(ndo, bp, EXTRACT_16BITS(&pgm->pgm_length));
831
832 return;
833
834 trunc:
835 ND_PRINT((ndo, "[|pgm]"));
836 if (ch != '\0')
837 ND_PRINT((ndo, ">"));
838 }
Unleashed OS