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[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 1.19 2000-04-24 12:59:39 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: PIM version number; 2 for PIMv2 */
47 /* lower 4bit: the PIM message type, currently they are:
48 * Hello, Register, Register-Stop, Join/Prune,
49 * Bootstrap, Assert, Graft (PIM-DM only),
50 * Graft-Ack (PIM-DM only), C-RP-Adv
51 */
52 #define PIM_VER(x) (((x) & 0xf0) >> 4)
53 #define PIM_TYPE(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("pim v2");
364 pimv2_print(bp, len);
365 break;
366 default:
367 (void)printf("pim 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 if (ep > bp + len)
561 ep = bp + len;
562 TCHECK(pim->pim_rsv);
563 pimv2_addr_len = pim->pim_rsv;
564 if (pimv2_addr_len != 0)
565 (void)printf("[RFC2117-encoding] ");
566
567 switch (PIM_TYPE(pim->pim_typever)) {
568 case 0:
569 {
570 u_int16_t otype, olen;
571 (void)printf(" Hello");
572 bp += 4;
573 while (bp < ep) {
574 TCHECK2(bp[0], 4);
575 otype = EXTRACT_16BITS(&bp[0]);
576 olen = EXTRACT_16BITS(&bp[2]);
577 TCHECK2(bp[0], 4 + olen);
578 switch (otype) {
579 case 1: /* Hold time */
580 (void)printf(" (Hold-time ");
581 relts_print(EXTRACT_16BITS(&bp[4]));
582 (void)printf(")");
583 break;
584
585 /* XXX
586 * draft-ietf-idmr-pimv2-dr-priority-00.txt
587 * says that DR-Priority is option 19.
588 * draft-ietf-pim-v2-sm-00.txt says it's 18.
589 */
590 case 18: /* DR-Priority */
591 (void)printf(" (DR-Priority: %d)", EXTRACT_32BITS(&bp[4]));
592 break;
593
594 case 19: /* Bidir-Capable */
595 if (olen == 4)
596 (void)printf(" (OLD-DR-Priority: %d)", EXTRACT_32BITS(&bp[4]));
597 else
598 (void)printf(" (bidir-capable)");
599 break;
600
601 case 20:
602 (void)printf(" (Genid: 0x%08x)", EXTRACT_32BITS(&bp[4]));
603 break;
604
605 case 21:
606 (void)printf(" (State Refresh Capable");
607 if (EXTRACT_32BITS(&bp[4]) != 1) {
608 (void)printf(" ?0x%x?", EXTRACT_32BITS(&bp[4]));
609 }
610 (void)printf(")");
611 break;
612
613 default:
614 if (vflag)
615 (void)printf(" [Hello option %d]", otype);
616 }
617 bp += 4 + olen;
618 }
619 break;
620 }
621
622 case 1:
623 {
624 struct ip *ip;
625
626 (void)printf(" Register");
627 if (vflag && bp + 8 <= ep) {
628 (void)printf(" %s%s", bp[4] & 0x80 ? "B" : "",
629 bp[4] & 0x40 ? "N" : "");
630 }
631 bp += 8; len -= 8;
632
633 /* encapsulated multicast packet */
634 if (bp >= ep)
635 break;
636 ip = (struct ip *)bp;
637 switch (ip->ip_v) {
638 case 4: /* IPv4 */
639 printf(" ");
640 ip_print(bp, len);
641 break;
642 #ifdef INET6
643 case 6: /* IPv6 */
644 printf(" ");
645 ip6_print(bp, len);
646 break;
647 #endif
648 default:
649 (void)printf(" IP ver %d", ip->ip_v);
650 break;
651 }
652 break;
653 }
654
655 case 2:
656 (void)printf(" Register-Stop");
657 bp += 4; len -= 4;
658 if (bp >= ep)
659 break;
660 (void)printf(" group=");
661 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
662 (void)printf("...");
663 break;
664 }
665 bp += advance; len -= advance;
666 if (bp >= ep)
667 break;
668 (void)printf(" source=");
669 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
670 (void)printf("...");
671 break;
672 }
673 bp += advance; len -= advance;
674 break;
675
676 case 3:
677 case 6:
678 case 7:
679 {
680 u_int8_t ngroup;
681 u_int16_t holdtime;
682 u_int16_t njoin;
683 u_int16_t nprune;
684 int i, j;
685
686 switch (PIM_TYPE(pim->pim_typever)) {
687 case 3:
688 (void)printf(" Join/Prune");
689 break;
690 case 6:
691 (void)printf(" Graft");
692 break;
693 case 7:
694 (void)printf(" Graft-ACK");
695 break;
696 }
697 bp += 4; len -= 4;
698 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
699 if (bp >= ep)
700 break;
701 (void)printf(" upstream-neighbor=");
702 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
703 (void)printf("...");
704 break;
705 }
706 bp += advance; len -= advance;
707 }
708 if (bp + 4 > ep)
709 break;
710 ngroup = bp[1];
711 holdtime = EXTRACT_16BITS(&bp[2]);
712 (void)printf(" groups=%u", ngroup);
713 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
714 (void)printf(" holdtime=");
715 if (holdtime == 0xffff)
716 (void)printf("infty");
717 else
718 relts_print(holdtime);
719 }
720 bp += 4; len -= 4;
721 for (i = 0; i < ngroup; i++) {
722 if (bp >= ep)
723 goto jp_done;
724 (void)printf(" (group%d: ", i);
725 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
726 (void)printf("...)");
727 goto jp_done;
728 }
729 bp += advance; len -= advance;
730 if (bp + 4 > ep) {
731 (void)printf("...)");
732 goto jp_done;
733 }
734 njoin = EXTRACT_16BITS(&bp[0]);
735 nprune = EXTRACT_16BITS(&bp[2]);
736 (void)printf(" join=%u", njoin);
737 bp += 4; len -= 4;
738 for (j = 0; j < njoin; j++) {
739 (void)printf(" ");
740 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
741 (void)printf("...)");
742 goto jp_done;
743 }
744 bp += advance; len -= advance;
745 }
746 (void)printf(" prune=%u", nprune);
747 for (j = 0; j < nprune; j++) {
748 (void)printf(" ");
749 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
750 (void)printf("...)");
751 goto jp_done;
752 }
753 bp += advance; len -= advance;
754 }
755 (void)printf(")");
756 }
757 jp_done:
758 break;
759 }
760
761 case 4:
762 {
763 int i, j, frpcnt;
764
765 (void)printf(" Bootstrap");
766 bp += 4;
767
768 /* Fragment Tag, Hash Mask len, and BSR-priority */
769 if (bp + sizeof(u_int16_t) >= ep) break;
770 (void)printf(" tag=%x", EXTRACT_16BITS(bp));
771 bp += sizeof(u_int16_t);
772 if (bp >= ep) break;
773 (void)printf(" hashmlen=%d", bp[0]);
774 if (bp + 1 >= ep) break;
775 (void)printf(" BSRprio=%d", bp[1]);
776 bp += 2;
777
778 /* Encoded-Unicast-BSR-Address */
779 if (bp >= ep) break;
780 (void)printf(" BSR=");
781 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
782 (void)printf("...");
783 break;
784 }
785 bp += advance;
786
787 for (i = 0; bp < ep; i++) {
788 /* Encoded-Group Address */
789 (void)printf(" (group%d: ", i);
790 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
791 < 0) {
792 (void)printf("...)");
793 goto bs_done;
794 }
795 bp += advance;
796
797 /* RP-Count, Frag RP-Cnt, and rsvd */
798 if (bp >= ep) {
799 (void)printf("...)");
800 goto bs_done;
801 }
802 (void)printf(" RPcnt=%d", frpcnt = bp[0]);
803 if (bp + 1 >= ep) {
804 (void)printf("...)");
805 goto bs_done;
806 }
807 (void)printf(" FRPcnt=%d", bp[1]);
808 bp += 4;
809
810 for (j = 0; j < frpcnt && bp < ep; j++) {
811 /* each RP info */
812 (void)printf(" RP%d=", j);
813 if ((advance = pimv2_addr_print(bp,
814 pimv2_unicast,
815 0)) < 0) {
816 (void)printf("...)");
817 goto bs_done;
818 }
819 bp += advance;
820
821 if (bp + 1 >= ep) {
822 (void)printf("...)");
823 goto bs_done;
824 }
825 (void)printf(",holdtime=");
826 relts_print(EXTRACT_16BITS(bp));
827 if (bp + 2 >= ep) {
828 (void)printf("...)");
829 goto bs_done;
830 }
831 (void)printf(",prio=%d", bp[2]);
832 bp += 4;
833 }
834 (void)printf(")");
835 }
836 bs_done:
837 break;
838 }
839 case 5:
840 (void)printf(" Assert");
841 bp += 4; len -= 4;
842 if (bp >= ep)
843 break;
844 (void)printf(" group=");
845 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
846 (void)printf("...");
847 break;
848 }
849 bp += advance; len -= advance;
850 if (bp >= ep)
851 break;
852 (void)printf(" src=");
853 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
854 (void)printf("...");
855 break;
856 }
857 bp += advance; len -= advance;
858 if (bp + 8 > ep)
859 break;
860 if (bp[0] & 0x80)
861 (void)printf(" RPT");
862 (void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff);
863 (void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
864 break;
865
866 case 8:
867 {
868 int i, pfxcnt;
869
870 (void)printf(" Candidate-RP-Advertisement");
871 bp += 4;
872
873 /* Prefix-Cnt, Priority, and Holdtime */
874 if (bp >= ep) break;
875 (void)printf(" prefix-cnt=%d", bp[0]);
876 pfxcnt = bp[0];
877 if (bp + 1 >= ep) break;
878 (void)printf(" prio=%d", bp[1]);
879 if (bp + 3 >= ep) break;
880 (void)printf(" holdtime=");
881 relts_print(EXTRACT_16BITS(&bp[2]));
882 bp += 4;
883
884 /* Encoded-Unicast-RP-Address */
885 if (bp >= ep) break;
886 (void)printf(" RP=");
887 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
888 (void)printf("...");
889 break;
890 }
891 bp += advance;
892
893 /* Encoded-Group Addresses */
894 for (i = 0; i < pfxcnt && bp < ep; i++) {
895 (void)printf(" Group%d=", i);
896 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
897 < 0) {
898 (void)printf("...");
899 break;
900 }
901 bp += advance;
902 }
903 break;
904 }
905
906 case 9:
907 (void)printf(" Prune-Refresh");
908 (void)printf(" src=");
909 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
910 (void)printf("...");
911 break;
912 }
913 bp += advance;
914 (void)printf(" grp=");
915 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
916 (void)printf("...");
917 break;
918 }
919 bp += advance;
920 (void)printf(" forwarder=");
921 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
922 (void)printf("...");
923 break;
924 }
925 bp += advance;
926 TCHECK2(bp[0], 2);
927 (void)printf(" TUNR ");
928 relts_print(EXTRACT_16BITS(bp));
929 break;
930
931
932 default:
933 (void)printf(" [type %d]", PIM_TYPE(pim->pim_typever));
934 break;
935 }
936
937 return;
938
939 trunc:
940 (void)printf("[|pim]");
941 }
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