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Don't try to print packets with a too-short hlen.
[tcpdump] / print-pim.c
1 /*
2 * Copyright (c) 1995, 1996
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-pim.c,v 1.17 2000-01-19 04:58:09 itojun 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 #include <netinet/in.h>
36 #include <netinet/in_systm.h>
37 #include <netinet/ip.h>
38
39 /*
40 * XXX: We consider a case where IPv6 is not ready yet for portability,
41 * but PIM dependent defintions should be independent of IPv6...
42 */
43
44 struct pim {
45 u_int8_t pim_typever;
46 /* upper 4bit: the PIM message type, currently they are:
47 * Hello, Register, Register-Stop, Join/Prune,
48 * Bootstrap, Assert, Graft (PIM-DM only),
49 * Graft-Ack (PIM-DM only), C-RP-Adv
50 */
51 /* lower 4bit: PIM version number; 2 for PIMv2 */
52 #define PIM_TYPE(x) (((x) & 0xf0) >> 4)
53 #define PIM_VER(x) ((x) & 0x0f)
54 u_char pim_rsv; /* Reserved */
55 u_short pim_cksum; /* IP style check sum */
56 };
57
58
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <unistd.h>
62
63 #include "interface.h"
64 #include "addrtoname.h"
65 #include "extract.h"
66
67 static void pimv2_print(register const u_char *bp, register u_int len);
68
69 static void
70 pimv1_join_prune_print(register const u_char *bp, register u_int len)
71 {
72 int maddrlen, addrlen, ngroups, njoin, nprune;
73 int njp;
74
75 /* If it's a single group and a single source, use 1-line output. */
76 if (TTEST2(bp[0], 30) && bp[11] == 1 &&
77 ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
78 int hold;
79
80 (void)printf(" RPF %s ", ipaddr_string(bp));
81 hold = EXTRACT_16BITS(&bp[6]);
82 if (hold != 180) {
83 (void)printf("Hold ");
84 relts_print(hold);
85 }
86 (void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune",
87 ipaddr_string(&bp[26]), bp[25] & 0x3f,
88 ipaddr_string(&bp[12]));
89 if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
90 (void)printf("/%s", ipaddr_string(&bp[16]));
91 (void)printf(") %s%s %s",
92 (bp[24] & 0x01) ? "Sparse" : "Dense",
93 (bp[25] & 0x80) ? " WC" : "",
94 (bp[25] & 0x40) ? "RP" : "SPT");
95 return;
96 }
97
98 TCHECK2(bp[0], 4);
99 (void)printf("\n Upstream Nbr: %s", ipaddr_string(bp));
100 TCHECK2(bp[6], 2);
101 (void)printf("\n Hold time: ");
102 relts_print(EXTRACT_16BITS(&bp[6]));
103 bp += 8; len -= 8;
104
105 TCHECK2(bp[0], 4);
106 maddrlen = bp[1];
107 addrlen = bp[2];
108 ngroups = bp[3];
109 bp += 4; len -= 4;
110 while (ngroups--) {
111 TCHECK2(bp[0], 4);
112 (void)printf("\n\tGroup: %s", ipaddr_string(bp));
113 if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
114 (void)printf("/%s", ipaddr_string(&bp[4]));
115 TCHECK2(bp[8], 4);
116 njoin = EXTRACT_16BITS(&bp[8]);
117 nprune = EXTRACT_16BITS(&bp[10]);
118 (void)printf(" joined: %d pruned: %d", njoin, nprune);
119 bp += 12; len -= 12;
120 for (njp = 0; njp < (njoin + nprune); njp++) {
121 char *type;
122
123 if (njp < njoin) {
124 type = "Join ";
125 } else {
126 type = "Prune";
127 }
128 TCHECK2(bp[0], 6);
129 (void)printf("\n\t%s %s%s%s%s/%d", type,
130 (bp[0] & 0x01) ? "Sparse " : "Dense ",
131 (bp[1] & 0x80) ? "WC " : "",
132 (bp[1] & 0x40) ? "RP " : "SPT ",
133 ipaddr_string(&bp[2]), bp[1] & 0x3f);
134 bp += 6; len -= 6;
135 }
136 }
137 return;
138 trunc:
139 (void)printf("[|pim]");
140 return;
141 }
142
143 void
144 pimv1_print(register const u_char *bp, register u_int len)
145 {
146 register const u_char *ep;
147 register u_char type;
148
149 ep = (const u_char *)snapend;
150 if (bp >= ep)
151 return;
152
153 type = bp[1];
154
155 switch (type) {
156 case 0:
157 (void)printf(" Query");
158 if (TTEST(bp[8])) {
159 switch (bp[8] >> 4) {
160 case 0: (void)printf(" Dense-mode");
161 break;
162 case 1: (void)printf(" Sparse-mode");
163 break;
164 case 2: (void)printf(" Sparse-Dense-mode");
165 break;
166 default: (void)printf(" mode-%d", bp[8] >> 4);
167 break;
168 }
169 }
170 if (vflag) {
171 TCHECK2(bp[10],2);
172 (void)printf(" (Hold-time ");
173 relts_print(EXTRACT_16BITS(&bp[10]));
174 (void)printf(")");
175 }
176 break;
177
178 case 1:
179 (void)printf(" Register");
180 TCHECK2(bp[8], 20); /* ip header */
181 (void)printf(" for %s > %s", ipaddr_string(&bp[20]),
182 ipaddr_string(&bp[24]));
183 break;
184
185 case 2:
186 (void)printf(" Register-Stop");
187 TCHECK2(bp[12], 4);
188 (void)printf(" for %s > %s", ipaddr_string(&bp[8]),
189 ipaddr_string(&bp[12]));
190 break;
191
192 case 3:
193 (void)printf(" Join/Prune");
194 if (vflag) {
195 pimv1_join_prune_print(&bp[8], len - 8);
196 }
197 break;
198
199 case 4:
200 (void)printf(" RP-reachable");
201 if (vflag) {
202 TCHECK2(bp[22], 2);
203 (void)printf(" group %s",
204 ipaddr_string(&bp[8]));
205 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
206 (void)printf("/%s", ipaddr_string(&bp[12]));
207 (void)printf(" RP %s hold ",
208 ipaddr_string(&bp[16]));
209 relts_print(EXTRACT_16BITS(&bp[22]));
210 }
211 break;
212
213 case 5:
214 (void)printf(" Assert");
215 TCHECK2(bp[16], 4);
216 (void)printf(" for %s > %s", ipaddr_string(&bp[16]),
217 ipaddr_string(&bp[8]));
218 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
219 (void)printf("/%s", ipaddr_string(&bp[12]));
220 TCHECK2(bp[24], 4);
221 (void)printf(" %s pref %d metric %d",
222 (bp[20] & 0x80) ? "RP-tree" : "SPT",
223 EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
224 EXTRACT_32BITS(&bp[24]));
225 break;
226
227 case 6:
228 (void)printf(" Graft");
229 if (vflag) {
230 pimv1_join_prune_print(&bp[8], len - 8);
231 }
232 break;
233
234 case 7:
235 (void)printf(" Graft-ACK");
236 if (vflag) {
237 pimv1_join_prune_print(&bp[8], len - 8);
238 }
239 break;
240
241 case 8:
242 (void)printf(" Mode");
243 break;
244
245 default:
246 (void)printf(" [type %d]", type);
247 break;
248 }
249 if ((bp[4] >> 4) != 1)
250 (void)printf(" [v%d]", bp[4] >> 4);
251 return;
252
253 trunc:
254 (void)printf("[|pim]");
255 return;
256 }
257
258 /*
259 * auto-RP is a cisco protocol, documented at
260 * ftp://ftpeng.cisco.com/ipmulticast/pim-autorp-spec01.txt
261 */
262 void
263 cisco_autorp_print(register const u_char *bp, register u_int len)
264 {
265 int type;
266 int numrps;
267 int hold;
268
269 TCHECK(bp[0]);
270 (void)printf(" auto-rp ");
271 type = bp[0];
272 switch (type) {
273 case 0x11:
274 (void)printf("candidate-advert");
275 break;
276 case 0x12:
277 (void)printf("mapping");
278 break;
279 default:
280 (void)printf("type-0x%02x", type);
281 break;
282 }
283
284 TCHECK(bp[1]);
285 numrps = bp[1];
286
287 TCHECK2(bp[2], 2);
288 (void)printf(" Hold ");
289 hold = EXTRACT_16BITS(&bp[2]);
290 if (hold)
291 relts_print(EXTRACT_16BITS(&bp[2]));
292 else
293 printf("FOREVER");
294
295 /* Next 4 bytes are reserved. */
296
297 bp += 8; len -= 8;
298
299 /*XXX skip unless -v? */
300
301 /*
302 * Rest of packet:
303 * numrps entries of the form:
304 * 32 bits: RP
305 * 6 bits: reserved
306 * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
307 * 8 bits: # of entries for this RP
308 * each entry: 7 bits: reserved, 1 bit: negative,
309 * 8 bits: mask 32 bits: source
310 * lather, rinse, repeat.
311 */
312 while (numrps--) {
313 int nentries;
314 char s;
315
316 TCHECK2(bp[0], 4);
317 (void)printf(" RP %s", ipaddr_string(bp));
318 TCHECK(bp[4]);
319 switch(bp[4] & 0x3) {
320 case 0: printf(" PIMv?");
321 break;
322 case 1: printf(" PIMv1");
323 break;
324 case 2: printf(" PIMv2");
325 break;
326 case 3: printf(" PIMv1+2");
327 break;
328 }
329 TCHECK(bp[5]);
330 nentries = bp[5];
331 bp += 6; len -= 6;
332 s = ' ';
333 for (; nentries; nentries--) {
334 TCHECK2(bp[0], 6);
335 (void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
336 ipaddr_string(&bp[2]), bp[1]);
337 s = ',';
338 bp += 6; len -= 6;
339 }
340 }
341 return;
342
343 trunc:
344 (void)printf("[|autorp]");
345 return;
346 }
347
348 void
349 pim_print(register const u_char *bp, register u_int len)
350 {
351 register const u_char *ep;
352 register struct pim *pim = (struct pim *)bp;
353
354 ep = (const u_char *)snapend;
355 if (bp >= ep)
356 return;
357 #ifdef notyet /* currently we see only version and type */
358 TCHECK(pim->pim_rsv);
359 #endif
360
361 switch(PIM_VER(pim->pim_typever)) {
362 case 2: /* avoid hardcoding? */
363 (void)printf("v2");
364 pimv2_print(bp, len);
365 break;
366 default:
367 (void)printf("v%d", PIM_VER(pim->pim_typever));
368 break;
369 }
370 return;
371 }
372
373 /*
374 * PIMv2 uses encoded address representations.
375 *
376 * The last PIM-SM I-D before RFC2117 was published specified the
377 * following representation for unicast addresses. However, RFC2117
378 * specified no encoding for unicast addresses with the unicast
379 * address length specified in the header. Therefore, we have to
380 * guess which encoding is being used (Cisco's PIMv2 implementation
381 * uses the non-RFC encoding). RFC2117 turns a previously "Reserved"
382 * field into a 'unicast-address-length-in-bytes' field. We guess
383 * that it's the draft encoding if this reserved field is zero.
384 *
385 * RFC2362 goes back to the encoded format, and calls the addr length
386 * field "reserved" again.
387 *
388 * The first byte is the address family, from:
389 *
390 * 0 Reserved
391 * 1 IP (IP version 4)
392 * 2 IP6 (IP version 6)
393 * 3 NSAP
394 * 4 HDLC (8-bit multidrop)
395 * 5 BBN 1822
396 * 6 802 (includes all 802 media plus Ethernet "canonical format")
397 * 7 E.163
398 * 8 E.164 (SMDS, Frame Relay, ATM)
399 * 9 F.69 (Telex)
400 * 10 X.121 (X.25, Frame Relay)
401 * 11 IPX
402 * 12 Appletalk
403 * 13 Decnet IV
404 * 14 Banyan Vines
405 * 15 E.164 with NSAP format subaddress
406 *
407 * In addition, the second byte is an "Encoding". 0 is the default
408 * encoding for the address family, and no other encodings are currently
409 * specified.
410 *
411 */
412
413 static int pimv2_addr_len;
414
415 enum pimv2_addrtype {
416 pimv2_unicast, pimv2_group, pimv2_source
417 };
418 #if 0
419 static char *addrtypestr[] = {
420 "unicast", "group", "source"
421 };
422 #endif
423
424 /* 0 1 2 3
425 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
426 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
427 * | Addr Family | Encoding Type | Unicast Address |
428 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++
429 * 0 1 2 3
430 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
431 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
432 * | Addr Family | Encoding Type | Reserved | Mask Len |
433 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
434 * | Group multicast Address |
435 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
436 * 0 1 2 3
437 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
438 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
439 * | Addr Family | Encoding Type | Rsrvd |S|W|R| Mask Len |
440 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
441 * | Source Address |
442 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
443 */
444 static int
445 pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent)
446 {
447 int af;
448 char *afstr;
449 int len, hdrlen;
450
451 TCHECK(bp[0]);
452
453 if (pimv2_addr_len == 0) {
454 TCHECK(bp[1]);
455 switch (bp[0]) {
456 case 1:
457 af = AF_INET;
458 afstr = "IPv4";
459 len = 4;
460 break;
461 #ifdef INET6
462 case 2:
463 af = AF_INET6;
464 afstr = "IPv6";
465 len = 16;
466 break;
467 #endif
468 default:
469 return -1;
470 }
471 if (bp[1] != 0)
472 return -1;
473 hdrlen = 2;
474 } else {
475 switch (pimv2_addr_len) {
476 case 4:
477 af = AF_INET;
478 afstr = "IPv4";
479 break;
480 #ifdef INET6
481 case 16:
482 af = AF_INET6;
483 afstr = "IPv6";
484 break;
485 #endif
486 default:
487 return -1;
488 break;
489 }
490 len = pimv2_addr_len;
491 hdrlen = 0;
492 }
493
494 bp += hdrlen;
495 switch (at) {
496 case pimv2_unicast:
497 TCHECK2(bp[0], len);
498 if (af == AF_INET) {
499 if (!silent)
500 (void)printf("%s", ipaddr_string(bp));
501 }
502 #ifdef INET6
503 else if (af == AF_INET6) {
504 if (!silent)
505 (void)printf("%s", ip6addr_string(bp));
506 }
507 #endif
508 return hdrlen + len;
509 case pimv2_group:
510 case pimv2_source:
511 TCHECK2(bp[0], len + 2);
512 if (af == AF_INET) {
513 if (!silent) {
514 (void)printf("%s", ipaddr_string(bp + 2));
515 if (bp[1] != 32)
516 (void)printf("/%u", bp[1]);
517 }
518 }
519 #ifdef INET6
520 else if (af == AF_INET6) {
521 if (!silent) {
522 (void)printf("%s", ip6addr_string(bp + 2));
523 if (bp[1] != 128)
524 (void)printf("/%u", bp[1]);
525 }
526 }
527 #endif
528 if (bp[0] && !silent) {
529 if (at == pimv2_group) {
530 (void)printf("(0x%02x)", bp[0]);
531 } else {
532 (void)printf("(%s%s%s",
533 bp[0] & 0x04 ? "S" : "",
534 bp[0] & 0x02 ? "W" : "",
535 bp[0] & 0x01 ? "R" : "");
536 if (bp[0] & 0xf8) {
537 (void) printf("+0x%02x", bp[0] & 0xf8);
538 }
539 (void)printf(")");
540 }
541 }
542 return hdrlen + 2 + len;
543 default:
544 return -1;
545 }
546 trunc:
547 return -1;
548 }
549
550 static void
551 pimv2_print(register const u_char *bp, register u_int len)
552 {
553 register const u_char *ep;
554 register struct pim *pim = (struct pim *)bp;
555 int advance;
556
557 ep = (const u_char *)snapend;
558 if (bp >= ep)
559 return;
560 TCHECK(pim->pim_rsv);
561 pimv2_addr_len = pim->pim_rsv;
562 if (pimv2_addr_len != 0)
563 (void)printf("[RFC2117-encoding] ");
564
565 switch (PIM_TYPE(pim->pim_typever)) {
566 case 0:
567 {
568 u_int16_t otype, olen;
569 (void)printf(" Hello");
570 bp += 4;
571 while (bp < ep) {
572 TCHECK2(bp[0], 4);
573 otype = EXTRACT_16BITS(&bp[0]);
574 olen = EXTRACT_16BITS(&bp[2]);
575 TCHECK2(bp[0], 4 + olen);
576 switch (otype) {
577 case 1: /* Hold time */
578 (void)printf(" (Hold-time ");
579 relts_print(EXTRACT_16BITS(&bp[4]));
580 (void)printf(")");
581 break;
582
583 /* XXX
584 * draft-ietf-idmr-pimv2-dr-priority-00.txt
585 * says that DR-Priority is option 19.
586 * draft-ietf-pim-v2-sm-00.txt says it's 18.
587 */
588 case 18: /* DR-Priority */
589 (void)printf(" (DR-Priority: %d)", EXTRACT_32BITS(&bp[4]));
590 break;
591
592 case 19: /* Bidir-Capable */
593 if (olen == 4)
594 (void)printf(" (OLD-DR-Priority: %d)", EXTRACT_32BITS(&bp[4]));
595 else
596 (void)printf(" (bidir-capable)");
597 break;
598
599 case 20:
600 (void)printf(" (Genid: 0x%08x)", EXTRACT_32BITS(&bp[4]));
601 break;
602
603 case 21:
604 (void)printf(" (State Refresh Capable");
605 if (EXTRACT_32BITS(&bp[4]) != 1) {
606 (void)printf(" ?0x%x?", EXTRACT_32BITS(&bp[4]));
607 }
608 (void)printf(")");
609 break;
610
611 default:
612 if (vflag)
613 (void)printf(" [Hello option %d]", otype);
614 }
615 bp += 4 + olen;
616 }
617 break;
618 }
619
620 case 1:
621 {
622 struct ip *ip;
623
624 (void)printf(" Register");
625 if (vflag && bp + 8 <= ep) {
626 (void)printf(" %s%s", bp[4] & 0x80 ? "B" : "",
627 bp[4] & 0x40 ? "N" : "");
628 }
629 bp += 8; len -= 8;
630
631 /* encapsulated multicast packet */
632 if (bp >= ep)
633 break;
634 ip = (struct ip *)bp;
635 switch(ip->ip_v) {
636 case 4: /* IPv4 */
637 printf(" ");
638 ip_print(bp, len);
639 break;
640 #ifdef INET6
641 case 6: /* IPv6 */
642 printf(" ");
643 ip6_print(bp, len);
644 break;
645 #endif
646 default:
647 (void)printf(" IP ver %d", ip->ip_v);
648 break;
649 }
650 break;
651 }
652
653 case 2:
654 (void)printf(" Register-Stop");
655 bp += 4; len -= 4;
656 if (bp >= ep)
657 break;
658 (void)printf(" group=");
659 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
660 (void)printf("...");
661 break;
662 }
663 bp += advance; len -= advance;
664 if (bp >= ep)
665 break;
666 (void)printf(" source=");
667 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
668 (void)printf("...");
669 break;
670 }
671 bp += advance; len -= advance;
672 break;
673
674 case 3:
675 case 6:
676 case 7:
677 {
678 u_int8_t ngroup;
679 u_int16_t holdtime;
680 u_int16_t njoin;
681 u_int16_t nprune;
682 int i, j;
683
684 switch (PIM_TYPE(pim->pim_typever)) {
685 case 3:
686 (void)printf(" Join/Prune");
687 break;
688 case 6:
689 (void)printf(" Graft");
690 break;
691 case 7:
692 (void)printf(" Graft-ACK");
693 break;
694 }
695 bp += 4; len -= 4;
696 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
697 if (bp >= ep)
698 break;
699 (void)printf(" upstream-neighbor=");
700 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
701 (void)printf("...");
702 break;
703 }
704 bp += advance; len -= advance;
705 }
706 if (bp + 4 > ep)
707 break;
708 ngroup = bp[1];
709 holdtime = EXTRACT_16BITS(&bp[2]);
710 (void)printf(" groups=%u", ngroup);
711 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
712 (void)printf(" holdtime=");
713 if (holdtime == 0xffff)
714 (void)printf("infty");
715 else
716 relts_print(holdtime);
717 }
718 bp += 4; len -= 4;
719 for (i = 0; i < ngroup; i++) {
720 if (bp >= ep)
721 goto jp_done;
722 (void)printf(" (group%d: ", i);
723 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
724 (void)printf("...)");
725 goto jp_done;
726 }
727 bp += advance; len -= advance;
728 if (bp + 4 > ep) {
729 (void)printf("...)");
730 goto jp_done;
731 }
732 njoin = EXTRACT_16BITS(&bp[0]);
733 nprune = EXTRACT_16BITS(&bp[2]);
734 (void)printf(" join=%u", njoin);
735 bp += 4; len -= 4;
736 for (j = 0; j < njoin; j++) {
737 (void)printf(" ");
738 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
739 (void)printf("...)");
740 goto jp_done;
741 }
742 bp += advance; len -= advance;
743 }
744 (void)printf(" prune=%u", nprune);
745 for (j = 0; j < nprune; j++) {
746 (void)printf(" ");
747 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
748 (void)printf("...)");
749 goto jp_done;
750 }
751 bp += advance; len -= advance;
752 }
753 (void)printf(")");
754 }
755 jp_done:
756 break;
757 }
758
759 case 4:
760 {
761 int i, j, frpcnt;
762
763 (void)printf(" Bootstrap");
764 bp += 4;
765
766 /* Fragment Tag, Hash Mask len, and BSR-priority */
767 if (bp + sizeof(u_int16_t) >= ep) break;
768 (void)printf(" tag=%x", EXTRACT_16BITS(bp));
769 bp += sizeof(u_int16_t);
770 if (bp >= ep) break;
771 (void)printf(" hashmlen=%d", bp[0]);
772 if (bp + 1 >= ep) break;
773 (void)printf(" BSRprio=%d", bp[1]);
774 bp += 2;
775
776 /* Encoded-Unicast-BSR-Address */
777 if (bp >= ep) break;
778 (void)printf(" BSR=");
779 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
780 (void)printf("...");
781 break;
782 }
783 bp += advance;
784
785 for (i = 0; bp < ep; i++) {
786 /* Encoded-Group Address */
787 (void)printf(" (group%d: ", i);
788 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
789 < 0) {
790 (void)printf("...)");
791 goto bs_done;
792 }
793 bp += advance;
794
795 /* RP-Count, Frag RP-Cnt, and rsvd */
796 if (bp >= ep) {
797 (void)printf("...)");
798 goto bs_done;
799 }
800 (void)printf(" RPcnt=%d", frpcnt = bp[0]);
801 if (bp + 1 >= ep) {
802 (void)printf("...)");
803 goto bs_done;
804 }
805 (void)printf(" FRPcnt=%d", bp[1]);
806 bp += 4;
807
808 for (j = 0; j < frpcnt && bp < ep; j++) {
809 /* each RP info */
810 (void)printf(" RP%d=", j);
811 if ((advance = pimv2_addr_print(bp,
812 pimv2_unicast,
813 0)) < 0) {
814 (void)printf("...)");
815 goto bs_done;
816 }
817 bp += advance;
818
819 if (bp + 1 >= ep) {
820 (void)printf("...)");
821 goto bs_done;
822 }
823 (void)printf(",holdtime=");
824 relts_print(EXTRACT_16BITS(bp));
825 if (bp + 2 >= ep) {
826 (void)printf("...)");
827 goto bs_done;
828 }
829 (void)printf(",prio=%d", bp[2]);
830 bp += 4;
831 }
832 (void)printf(")");
833 }
834 bs_done:
835 break;
836 }
837 case 5:
838 (void)printf(" Assert");
839 bp += 4; len -= 4;
840 if (bp >= ep)
841 break;
842 (void)printf(" group=");
843 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
844 (void)printf("...");
845 break;
846 }
847 bp += advance; len -= advance;
848 if (bp >= ep)
849 break;
850 (void)printf(" src=");
851 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
852 (void)printf("...");
853 break;
854 }
855 bp += advance; len -= advance;
856 if (bp + 8 > ep)
857 break;
858 if (bp[0] & 0x80)
859 (void)printf(" RPT");
860 (void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff);
861 (void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
862 break;
863
864 case 8:
865 {
866 int i, pfxcnt;
867
868 (void)printf(" Candidate-RP-Advertisement");
869 bp += 4;
870
871 /* Prefix-Cnt, Priority, and Holdtime */
872 if (bp >= ep) break;
873 (void)printf(" prefix-cnt=%d", bp[0]);
874 pfxcnt = bp[0];
875 if (bp + 1 >= ep) break;
876 (void)printf(" prio=%d", bp[1]);
877 if (bp + 3 >= ep) break;
878 (void)printf(" holdtime=");
879 relts_print(EXTRACT_16BITS(&bp[2]));
880 bp += 4;
881
882 /* Encoded-Unicast-RP-Address */
883 if (bp >= ep) break;
884 (void)printf(" RP=");
885 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
886 (void)printf("...");
887 break;
888 }
889 bp += advance;
890
891 /* Encoded-Group Addresses */
892 for (i = 0; i < pfxcnt && bp < ep; i++) {
893 (void)printf(" Group%d=", i);
894 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
895 < 0) {
896 (void)printf("...");
897 break;
898 }
899 bp += advance;
900 }
901 break;
902 }
903
904 case 9:
905 (void)printf(" Prune-Refresh");
906 (void)printf(" src=");
907 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
908 (void)printf("...");
909 break;
910 }
911 bp += advance;
912 (void)printf(" grp=");
913 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
914 (void)printf("...");
915 break;
916 }
917 bp += advance;
918 (void)printf(" forwarder=");
919 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
920 (void)printf("...");
921 break;
922 }
923 bp += advance;
924 TCHECK2(bp[0], 2);
925 (void)printf(" TUNR ");
926 relts_print(EXTRACT_16BITS(bp));
927 break;
928
929
930 default:
931 (void)printf(" [type %d]", PIM_TYPE(pim->pim_typever));
932 break;
933 }
934
935 return;
936
937 trunc:
938 (void)printf("[|pim]");
939 }
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