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[dragonfly.git] / contrib / tcpdump-3.9 / print-pim.c
blob39c4e4d73835238b24ad92f6d9c4186cbac1d938
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[] _U_ =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.45.2.4 2006/02/13 01:32:34 hannes Exp $ (LBL)";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include <tcpdump-stdinc.h>
32 #include "interface.h"
33
34 #define PIMV2_TYPE_HELLO 0
35 #define PIMV2_TYPE_REGISTER 1
36 #define PIMV2_TYPE_REGISTER_STOP 2
37 #define PIMV2_TYPE_JOIN_PRUNE 3
38 #define PIMV2_TYPE_BOOTSTRAP 4
39 #define PIMV2_TYPE_ASSERT 5
40 #define PIMV2_TYPE_GRAFT 6
41 #define PIMV2_TYPE_GRAFT_ACK 7
42 #define PIMV2_TYPE_CANDIDATE_RP 8
43 #define PIMV2_TYPE_PRUNE_REFRESH 9
44
45 static struct tok pimv2_type_values[] = {
46 { PIMV2_TYPE_HELLO, "Hello" },
47 { PIMV2_TYPE_REGISTER, "Register" },
48 { PIMV2_TYPE_REGISTER_STOP, "Register Stop" },
49 { PIMV2_TYPE_JOIN_PRUNE, "Join / Prune" },
50 { PIMV2_TYPE_BOOTSTRAP, "Bootstrap" },
51 { PIMV2_TYPE_ASSERT, "Assert" },
52 { PIMV2_TYPE_GRAFT, "Graft" },
53 { PIMV2_TYPE_GRAFT_ACK, "Graft Acknowledgement" },
54 { PIMV2_TYPE_CANDIDATE_RP, "Candidate RP Advertisement" },
55 { PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" },
56 { 0, NULL}
57 };
58
59 #define PIMV2_HELLO_OPTION_HOLDTIME 1
60 #define PIMV2_HELLO_OPTION_LANPRUNEDELAY 2
61 #define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD 18
62 #define PIMV2_HELLO_OPTION_DR_PRIORITY 19
63 #define PIMV2_HELLO_OPTION_GENID 20
64 #define PIMV2_HELLO_OPTION_REFRESH_CAP 21
65 #define PIMV2_HELLO_OPTION_BIDIR_CAP 22
66 #define PIMV2_HELLO_OPTION_ADDRESS_LIST 24
67 #define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001
68
69 static struct tok pimv2_hello_option_values[] = {
70 { PIMV2_HELLO_OPTION_HOLDTIME, "Hold Time" },
71 { PIMV2_HELLO_OPTION_LANPRUNEDELAY, "LAN Prune Delay" },
72 { PIMV2_HELLO_OPTION_DR_PRIORITY_OLD, "DR Priority (Old)" },
73 { PIMV2_HELLO_OPTION_DR_PRIORITY, "DR Priority" },
74 { PIMV2_HELLO_OPTION_GENID, "Generation ID" },
75 { PIMV2_HELLO_OPTION_REFRESH_CAP, "State Refresh Capability" },
76 { PIMV2_HELLO_OPTION_BIDIR_CAP, "Bi-Directional Capability" },
77 { PIMV2_HELLO_OPTION_ADDRESS_LIST, "Address List" },
78 { PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" },
79 { 0, NULL}
80 };
81
82 #define PIMV2_REGISTER_FLAG_LEN 4
83 #define PIMV2_REGISTER_FLAG_BORDER 0x80000000
84 #define PIMV2_REGISTER_FLAG_NULL 0x40000000
85
86 static struct tok pimv2_register_flag_values[] = {
87 { PIMV2_REGISTER_FLAG_BORDER, "Border" },
88 { PIMV2_REGISTER_FLAG_NULL, "Null" },
89 { 0, NULL}
90 };
91
92 /*
93 * XXX: We consider a case where IPv6 is not ready yet for portability,
94 * but PIM dependent defintions should be independent of IPv6...
95 */
96
97 struct pim {
98 u_int8_t pim_typever;
99 /* upper 4bit: PIM version number; 2 for PIMv2 */
100 /* lower 4bit: the PIM message type, currently they are:
101 * Hello, Register, Register-Stop, Join/Prune,
102 * Bootstrap, Assert, Graft (PIM-DM only),
103 * Graft-Ack (PIM-DM only), C-RP-Adv
104 */
105 #define PIM_VER(x) (((x) & 0xf0) >> 4)
106 #define PIM_TYPE(x) ((x) & 0x0f)
107 u_char pim_rsv; /* Reserved */
108 u_short pim_cksum; /* IP style check sum */
109 };
110
111
112 #include <stdio.h>
113 #include <stdlib.h>
114
115 #include "interface.h"
116 #include "addrtoname.h"
117 #include "extract.h"
118
119 #include "ip.h"
120
121 static void pimv2_print(register const u_char *bp, register u_int len);
122
123 static void
124 pimv1_join_prune_print(register const u_char *bp, register u_int len)
125 {
126 int maddrlen, addrlen, ngroups, njoin, nprune;
127 int njp;
128
129 /* If it's a single group and a single source, use 1-line output. */
130 if (TTEST2(bp[0], 30) && bp[11] == 1 &&
131 ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
132 int hold;
133
134 (void)printf(" RPF %s ", ipaddr_string(bp));
135 hold = EXTRACT_16BITS(&bp[6]);
136 if (hold != 180) {
137 (void)printf("Hold ");
138 relts_print(hold);
139 }
140 (void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune",
141 ipaddr_string(&bp[26]), bp[25] & 0x3f,
142 ipaddr_string(&bp[12]));
143 if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
144 (void)printf("/%s", ipaddr_string(&bp[16]));
145 (void)printf(") %s%s %s",
146 (bp[24] & 0x01) ? "Sparse" : "Dense",
147 (bp[25] & 0x80) ? " WC" : "",
148 (bp[25] & 0x40) ? "RP" : "SPT");
149 return;
150 }
151
152 TCHECK2(bp[0], sizeof(struct in_addr));
153 if (vflag > 1)
154 (void)printf("\n");
155 (void)printf(" Upstream Nbr: %s", ipaddr_string(bp));
156 TCHECK2(bp[6], 2);
157 if (vflag > 1)
158 (void)printf("\n");
159 (void)printf(" Hold time: ");
160 relts_print(EXTRACT_16BITS(&bp[6]));
161 if (vflag < 2)
162 return;
163 bp += 8;
164 len -= 8;
165
166 TCHECK2(bp[0], 4);
167 maddrlen = bp[1];
168 addrlen = bp[2];
169 ngroups = bp[3];
170 bp += 4;
171 len -= 4;
172 while (ngroups--) {
173 /*
174 * XXX - does the address have length "addrlen" and the
175 * mask length "maddrlen"?
176 */
177 TCHECK2(bp[0], sizeof(struct in_addr));
178 (void)printf("\n\tGroup: %s", ipaddr_string(bp));
179 TCHECK2(bp[4], sizeof(struct in_addr));
180 if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
181 (void)printf("/%s", ipaddr_string(&bp[4]));
182 TCHECK2(bp[8], 4);
183 njoin = EXTRACT_16BITS(&bp[8]);
184 nprune = EXTRACT_16BITS(&bp[10]);
185 (void)printf(" joined: %d pruned: %d", njoin, nprune);
186 bp += 12;
187 len -= 12;
188 for (njp = 0; njp < (njoin + nprune); njp++) {
189 const char *type;
190
191 if (njp < njoin)
192 type = "Join ";
193 else
194 type = "Prune";
195 TCHECK2(bp[0], 6);
196 (void)printf("\n\t%s %s%s%s%s/%d", type,
197 (bp[0] & 0x01) ? "Sparse " : "Dense ",
198 (bp[1] & 0x80) ? "WC " : "",
199 (bp[1] & 0x40) ? "RP " : "SPT ",
200 ipaddr_string(&bp[2]), bp[1] & 0x3f);
201 bp += 6;
202 len -= 6;
203 }
204 }
205 return;
206 trunc:
207 (void)printf("[|pim]");
208 return;
209 }
210
211 void
212 pimv1_print(register const u_char *bp, register u_int len)
213 {
214 register const u_char *ep;
215 register u_char type;
216
217 ep = (const u_char *)snapend;
218 if (bp >= ep)
219 return;
220
221 TCHECK(bp[1]);
222 type = bp[1];
223
224 switch (type) {
225 case 0:
226 (void)printf(" Query");
227 if (TTEST(bp[8])) {
228 switch (bp[8] >> 4) {
229 case 0:
230 (void)printf(" Dense-mode");
231 break;
232 case 1:
233 (void)printf(" Sparse-mode");
234 break;
235 case 2:
236 (void)printf(" Sparse-Dense-mode");
237 break;
238 default:
239 (void)printf(" mode-%d", bp[8] >> 4);
240 break;
241 }
242 }
243 if (vflag) {
244 TCHECK2(bp[10],2);
245 (void)printf(" (Hold-time ");
246 relts_print(EXTRACT_16BITS(&bp[10]));
247 (void)printf(")");
248 }
249 break;
250
251 case 1:
252 (void)printf(" Register");
253 TCHECK2(bp[8], 20); /* ip header */
254 (void)printf(" for %s > %s", ipaddr_string(&bp[20]),
255 ipaddr_string(&bp[24]));
256 break;
257 case 2:
258 (void)printf(" Register-Stop");
259 TCHECK2(bp[12], sizeof(struct in_addr));
260 (void)printf(" for %s > %s", ipaddr_string(&bp[8]),
261 ipaddr_string(&bp[12]));
262 break;
263 case 3:
264 (void)printf(" Join/Prune");
265 if (vflag)
266 pimv1_join_prune_print(&bp[8], len - 8);
267 break;
268 case 4:
269 (void)printf(" RP-reachable");
270 if (vflag) {
271 TCHECK2(bp[22], 2);
272 (void)printf(" group %s",
273 ipaddr_string(&bp[8]));
274 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
275 (void)printf("/%s", ipaddr_string(&bp[12]));
276 (void)printf(" RP %s hold ", ipaddr_string(&bp[16]));
277 relts_print(EXTRACT_16BITS(&bp[22]));
278 }
279 break;
280 case 5:
281 (void)printf(" Assert");
282 TCHECK2(bp[16], sizeof(struct in_addr));
283 (void)printf(" for %s > %s", ipaddr_string(&bp[16]),
284 ipaddr_string(&bp[8]));
285 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
286 (void)printf("/%s", ipaddr_string(&bp[12]));
287 TCHECK2(bp[24], 4);
288 (void)printf(" %s pref %d metric %d",
289 (bp[20] & 0x80) ? "RP-tree" : "SPT",
290 EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
291 EXTRACT_32BITS(&bp[24]));
292 break;
293 case 6:
294 (void)printf(" Graft");
295 if (vflag)
296 pimv1_join_prune_print(&bp[8], len - 8);
297 break;
298 case 7:
299 (void)printf(" Graft-ACK");
300 if (vflag)
301 pimv1_join_prune_print(&bp[8], len - 8);
302 break;
303 case 8:
304 (void)printf(" Mode");
305 break;
306 default:
307 (void)printf(" [type %d]", type);
308 break;
309 }
310 if ((bp[4] >> 4) != 1)
311 (void)printf(" [v%d]", bp[4] >> 4);
312 return;
313
314 trunc:
315 (void)printf("[|pim]");
316 return;
317 }
318
319 /*
320 * auto-RP is a cisco protocol, documented at
321 * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt
322 *
323 * This implements version 1+, dated Sept 9, 1998.
324 */
325 void
326 cisco_autorp_print(register const u_char *bp, register u_int len)
327 {
328 int type;
329 int numrps;
330 int hold;
331
332 TCHECK(bp[0]);
333 (void)printf(" auto-rp ");
334 type = bp[0];
335 switch (type) {
336 case 0x11:
337 (void)printf("candidate-advert");
338 break;
339 case 0x12:
340 (void)printf("mapping");
341 break;
342 default:
343 (void)printf("type-0x%02x", type);
344 break;
345 }
346
347 TCHECK(bp[1]);
348 numrps = bp[1];
349
350 TCHECK2(bp[2], 2);
351 (void)printf(" Hold ");
352 hold = EXTRACT_16BITS(&bp[2]);
353 if (hold)
354 relts_print(EXTRACT_16BITS(&bp[2]));
355 else
356 printf("FOREVER");
357
358 /* Next 4 bytes are reserved. */
359
360 bp += 8; len -= 8;
361
362 /*XXX skip unless -v? */
363
364 /*
365 * Rest of packet:
366 * numrps entries of the form:
367 * 32 bits: RP
368 * 6 bits: reserved
369 * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
370 * 8 bits: # of entries for this RP
371 * each entry: 7 bits: reserved, 1 bit: negative,
372 * 8 bits: mask 32 bits: source
373 * lather, rinse, repeat.
374 */
375 while (numrps--) {
376 int nentries;
377 char s;
378
379 TCHECK2(bp[0], 4);
380 (void)printf(" RP %s", ipaddr_string(bp));
381 TCHECK(bp[4]);
382 switch (bp[4] & 0x3) {
383 case 0: printf(" PIMv?");
384 break;
385 case 1: printf(" PIMv1");
386 break;
387 case 2: printf(" PIMv2");
388 break;
389 case 3: printf(" PIMv1+2");
390 break;
391 }
392 if (bp[4] & 0xfc)
393 (void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc);
394 TCHECK(bp[5]);
395 nentries = bp[5];
396 bp += 6; len -= 6;
397 s = ' ';
398 for (; nentries; nentries--) {
399 TCHECK2(bp[0], 6);
400 (void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
401 ipaddr_string(&bp[2]), bp[1]);
402 if (bp[0] & 0xfe)
403 (void)printf("[rsvd=0x%02x]", bp[0] & 0xfe);
404 s = ',';
405 bp += 6; len -= 6;
406 }
407 }
408 return;
409
410 trunc:
411 (void)printf("[|autorp]");
412 return;
413 }
414
415 void
416 pim_print(register const u_char *bp, register u_int len)
417 {
418 register const u_char *ep;
419 register struct pim *pim = (struct pim *)bp;
420
421 ep = (const u_char *)snapend;
422 if (bp >= ep)
423 return;
424 #ifdef notyet /* currently we see only version and type */
425 TCHECK(pim->pim_rsv);
426 #endif
427
428 switch (PIM_VER(pim->pim_typever)) {
429 case 2:
430 if (!vflag) {
431 printf("PIMv%u, %s, length %u",
432 PIM_VER(pim->pim_typever),
433 tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)),
434 len);
435 return;
436 } else {
437 printf("PIMv%u, length %u\n\t%s",
438 PIM_VER(pim->pim_typever),
439 len,
440 tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)));
441 pimv2_print(bp, len);
442 }
443 break;
444 default:
445 printf("PIMv%u, length %u",
446 PIM_VER(pim->pim_typever),
447 len);
448 break;
449 }
450 return;
451 }
452
453 /*
454 * PIMv2 uses encoded address representations.
455 *
456 * The last PIM-SM I-D before RFC2117 was published specified the
457 * following representation for unicast addresses. However, RFC2117
458 * specified no encoding for unicast addresses with the unicast
459 * address length specified in the header. Therefore, we have to
460 * guess which encoding is being used (Cisco's PIMv2 implementation
461 * uses the non-RFC encoding). RFC2117 turns a previously "Reserved"
462 * field into a 'unicast-address-length-in-bytes' field. We guess
463 * that it's the draft encoding if this reserved field is zero.
464 *
465 * RFC2362 goes back to the encoded format, and calls the addr length
466 * field "reserved" again.
467 *
468 * The first byte is the address family, from:
469 *
470 * 0 Reserved
471 * 1 IP (IP version 4)
472 * 2 IP6 (IP version 6)
473 * 3 NSAP
474 * 4 HDLC (8-bit multidrop)
475 * 5 BBN 1822
476 * 6 802 (includes all 802 media plus Ethernet "canonical format")
477 * 7 E.163
478 * 8 E.164 (SMDS, Frame Relay, ATM)
479 * 9 F.69 (Telex)
480 * 10 X.121 (X.25, Frame Relay)
481 * 11 IPX
482 * 12 Appletalk
483 * 13 Decnet IV
484 * 14 Banyan Vines
485 * 15 E.164 with NSAP format subaddress
486 *
487 * In addition, the second byte is an "Encoding". 0 is the default
488 * encoding for the address family, and no other encodings are currently
489 * specified.
490 *
491 */
492
493 static int pimv2_addr_len;
494
495 enum pimv2_addrtype {
496 pimv2_unicast, pimv2_group, pimv2_source
497 };
498
499 /* 0 1 2 3
500 * 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
501 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
502 * | Addr Family | Encoding Type | Unicast Address |
503 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++
504 * 0 1 2 3
505 * 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
506 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
507 * | Addr Family | Encoding Type | Reserved | Mask Len |
508 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
509 * | Group multicast Address |
510 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
511 * 0 1 2 3
512 * 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
513 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
514 * | Addr Family | Encoding Type | Rsrvd |S|W|R| Mask Len |
515 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
516 * | Source Address |
517 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
518 */
519 static int
520 pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent)
521 {
522 int af;
523 int len, hdrlen;
524
525 TCHECK(bp[0]);
526
527 if (pimv2_addr_len == 0) {
528 TCHECK(bp[1]);
529 switch (bp[0]) {
530 case 1:
531 af = AF_INET;
532 len = sizeof(struct in_addr);
533 break;
534 #ifdef INET6
535 case 2:
536 af = AF_INET6;
537 len = sizeof(struct in6_addr);
538 break;
539 #endif
540 default:
541 return -1;
542 }
543 if (bp[1] != 0)
544 return -1;
545 hdrlen = 2;
546 } else {
547 switch (pimv2_addr_len) {
548 case sizeof(struct in_addr):
549 af = AF_INET;
550 break;
551 #ifdef INET6
552 case sizeof(struct in6_addr):
553 af = AF_INET6;
554 break;
555 #endif
556 default:
557 return -1;
558 break;
559 }
560 len = pimv2_addr_len;
561 hdrlen = 0;
562 }
563
564 bp += hdrlen;
565 switch (at) {
566 case pimv2_unicast:
567 TCHECK2(bp[0], len);
568 if (af == AF_INET) {
569 if (!silent)
570 (void)printf("%s", ipaddr_string(bp));
571 }
572 #ifdef INET6
573 else if (af == AF_INET6) {
574 if (!silent)
575 (void)printf("%s", ip6addr_string(bp));
576 }
577 #endif
578 return hdrlen + len;
579 case pimv2_group:
580 case pimv2_source:
581 TCHECK2(bp[0], len + 2);
582 if (af == AF_INET) {
583 if (!silent) {
584 (void)printf("%s", ipaddr_string(bp + 2));
585 if (bp[1] != 32)
586 (void)printf("/%u", bp[1]);
587 }
588 }
589 #ifdef INET6
590 else if (af == AF_INET6) {
591 if (!silent) {
592 (void)printf("%s", ip6addr_string(bp + 2));
593 if (bp[1] != 128)
594 (void)printf("/%u", bp[1]);
595 }
596 }
597 #endif
598 if (bp[0] && !silent) {
599 if (at == pimv2_group) {
600 (void)printf("(0x%02x)", bp[0]);
601 } else {
602 (void)printf("(%s%s%s",
603 bp[0] & 0x04 ? "S" : "",
604 bp[0] & 0x02 ? "W" : "",
605 bp[0] & 0x01 ? "R" : "");
606 if (bp[0] & 0xf8) {
607 (void) printf("+0x%02x", bp[0] & 0xf8);
608 }
609 (void)printf(")");
610 }
611 }
612 return hdrlen + 2 + len;
613 default:
614 return -1;
615 }
616 trunc:
617 return -1;
618 }
619
620 static void
621 pimv2_print(register const u_char *bp, register u_int len)
622 {
623 register const u_char *ep;
624 register struct pim *pim = (struct pim *)bp;
625 int advance;
626
627 ep = (const u_char *)snapend;
628 if (bp >= ep)
629 return;
630 if (ep > bp + len)
631 ep = bp + len;
632 TCHECK(pim->pim_rsv);
633 pimv2_addr_len = pim->pim_rsv;
634 if (pimv2_addr_len != 0)
635 (void)printf(", RFC2117-encoding");
636
637 printf(", cksum 0x%04x ", EXTRACT_16BITS(&pim->pim_cksum));
638 if (EXTRACT_16BITS(&pim->pim_cksum) == 0) {
639 printf("(unverified)");
640 } else {
641 printf("(%scorrect)",
642 TTEST2(bp[0], len) &&
643 in_cksum((const u_short*)bp, len, 0) ? "in" : "" );
644 }
645
646 switch (PIM_TYPE(pim->pim_typever)) {
647 case PIMV2_TYPE_HELLO:
648 {
649 u_int16_t otype, olen;
650 bp += 4;
651 while (bp < ep) {
652 TCHECK2(bp[0], 4);
653 otype = EXTRACT_16BITS(&bp[0]);
654 olen = EXTRACT_16BITS(&bp[2]);
655 TCHECK2(bp[0], 4 + olen);
656
657 printf("\n\t %s Option (%u), length %u, Value: ",
658 tok2str( pimv2_hello_option_values,"Unknown",otype),
659 otype,
660 olen);
661 bp += 4;
662
663 switch (otype) {
664 case PIMV2_HELLO_OPTION_HOLDTIME:
665 relts_print(EXTRACT_16BITS(bp));
666 break;
667
668 case PIMV2_HELLO_OPTION_LANPRUNEDELAY:
669 if (olen != 4) {
670 (void)printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
671 } else {
672 char t_bit;
673 u_int16_t lan_delay, override_interval;
674 lan_delay = EXTRACT_16BITS(bp);
675 override_interval = EXTRACT_16BITS(bp+2);
676 t_bit = (lan_delay & 0x8000)? 1 : 0;
677 lan_delay &= ~0x8000;
678 (void)printf("\n\t T-bit=%d, LAN delay %dms, Override interval %dms",
679 t_bit, lan_delay, override_interval);
680 }
681 break;
682
683 case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD:
684 case PIMV2_HELLO_OPTION_DR_PRIORITY:
685 switch (olen) {
686 case 0:
687 printf("Bi-Directional Capability (Old)");
688 break;
689 case 4:
690 printf("%u", EXTRACT_32BITS(bp));
691 break;
692 default:
693 printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
694 break;
695 }
696 break;
697
698 case PIMV2_HELLO_OPTION_GENID:
699 (void)printf("0x%08x", EXTRACT_32BITS(bp));
700 break;
701
702 case PIMV2_HELLO_OPTION_REFRESH_CAP:
703 (void)printf("v%d", *bp);
704 if (*(bp+1) != 0) {
705 (void)printf(", interval ");
706 relts_print(*(bp+1));
707 }
708 if (EXTRACT_16BITS(bp+2) != 0) {
709 (void)printf(" ?0x%04x?", EXTRACT_16BITS(bp+2));
710 }
711 break;
712
713 case PIMV2_HELLO_OPTION_BIDIR_CAP:
714 break;
715
716 case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD:
717 case PIMV2_HELLO_OPTION_ADDRESS_LIST:
718 if (vflag > 1) {
719 const u_char *ptr = bp;
720 while (ptr < (bp+olen)) {
721 int advance;
722
723 printf("\n\t ");
724 advance = pimv2_addr_print(ptr, pimv2_unicast, 0);
725 if (advance < 0) {
726 printf("...");
727 break;
728 }
729 ptr += advance;
730 }
731 }
732 break;
733 default:
734 if (vflag <= 1)
735 print_unknown_data(bp,"\n\t ",olen);
736 break;
737 }
738 /* do we want to see an additionally hexdump ? */
739 if (vflag> 1)
740 print_unknown_data(bp,"\n\t ",olen);
741 bp += olen;
742 }
743 break;
744 }
745
746 case PIMV2_TYPE_REGISTER:
747 {
748 struct ip *ip;
749
750 if (!TTEST2(*(bp+4), PIMV2_REGISTER_FLAG_LEN))
751 goto trunc;
752
753 printf(", Flags [ %s ]\n\t",
754 tok2str(pimv2_register_flag_values,
755 "none",
756 EXTRACT_32BITS(bp+4)));
757
758 bp += 8; len -= 8;
759 /* encapsulated multicast packet */
760 ip = (struct ip *)bp;
761 switch (IP_V(ip)) {
762 case 0: /* Null header */
763 (void)printf("IP-Null-header %s > %s",
764 ipaddr_string(&ip->ip_src),
765 ipaddr_string(&ip->ip_dst));
766 break;
767
768 case 4: /* IPv4 */
769 ip_print(gndo, bp, len);
770 break;
771 #ifdef INET6
772 case 6: /* IPv6 */
773 ip6_print(bp, len);
774 break;
775 #endif
776 default:
777 (void)printf("IP ver %d", IP_V(ip));
778 break;
779 }
780 break;
781 }
782
783 case PIMV2_TYPE_REGISTER_STOP:
784 bp += 4; len -= 4;
785 if (bp >= ep)
786 break;
787 (void)printf(" group=");
788 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
789 (void)printf("...");
790 break;
791 }
792 bp += advance; len -= advance;
793 if (bp >= ep)
794 break;
795 (void)printf(" source=");
796 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
797 (void)printf("...");
798 break;
799 }
800 bp += advance; len -= advance;
801 break;
802
803 case PIMV2_TYPE_JOIN_PRUNE:
804 case PIMV2_TYPE_GRAFT:
805 case PIMV2_TYPE_GRAFT_ACK:
806
807
808 /*
809 * 0 1 2 3
810 * 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
811 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
812 * |PIM Ver| Type | Addr length | Checksum |
813 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
814 * | Unicast-Upstream Neighbor Address |
815 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
816 * | Reserved | Num groups | Holdtime |
817 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
818 * | Encoded-Multicast Group Address-1 |
819 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
820 * | Number of Joined Sources | Number of Pruned Sources |
821 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
822 * | Encoded-Joined Source Address-1 |
823 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
824 * | . |
825 * | . |
826 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
827 * | Encoded-Joined Source Address-n |
828 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
829 * | Encoded-Pruned Source Address-1 |
830 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
831 * | . |
832 * | . |
833 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
834 * | Encoded-Pruned Source Address-n |
835 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
836 * | . |
837 * | . |
838 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
839 * | Encoded-Multicast Group Address-n |
840 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
841 */
842
843 {
844 u_int8_t ngroup;
845 u_int16_t holdtime;
846 u_int16_t njoin;
847 u_int16_t nprune;
848 int i, j;
849
850 bp += 4; len -= 4;
851 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
852 if (bp >= ep)
853 break;
854 (void)printf(", upstream-neighbor: ");
855 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
856 (void)printf("...");
857 break;
858 }
859 bp += advance; len -= advance;
860 }
861 if (bp + 4 > ep)
862 break;
863 ngroup = bp[1];
864 holdtime = EXTRACT_16BITS(&bp[2]);
865 (void)printf("\n\t %u group(s)", ngroup);
866 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
867 (void)printf(", holdtime: ");
868 if (holdtime == 0xffff)
869 (void)printf("infinite");
870 else
871 relts_print(holdtime);
872 }
873 bp += 4; len -= 4;
874 for (i = 0; i < ngroup; i++) {
875 if (bp >= ep)
876 goto jp_done;
877 (void)printf("\n\t group #%u: ", i+1);
878 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
879 (void)printf("...)");
880 goto jp_done;
881 }
882 bp += advance; len -= advance;
883 if (bp + 4 > ep) {
884 (void)printf("...)");
885 goto jp_done;
886 }
887 njoin = EXTRACT_16BITS(&bp[0]);
888 nprune = EXTRACT_16BITS(&bp[2]);
889 (void)printf(", joined sources: %u, pruned sources: %u", njoin,nprune);
890 bp += 4; len -= 4;
891 for (j = 0; j < njoin; j++) {
892 (void)printf("\n\t joined source #%u: ",j+1);
893 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
894 (void)printf("...)");
895 goto jp_done;
896 }
897 bp += advance; len -= advance;
898 }
899 for (j = 0; j < nprune; j++) {
900 (void)printf("\n\t pruned source #%u: ",j+1);
901 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
902 (void)printf("...)");
903 goto jp_done;
904 }
905 bp += advance; len -= advance;
906 }
907 }
908 jp_done:
909 break;
910 }
911
912 case PIMV2_TYPE_BOOTSTRAP:
913 {
914 int i, j, frpcnt;
915 bp += 4;
916
917 /* Fragment Tag, Hash Mask len, and BSR-priority */
918 if (bp + sizeof(u_int16_t) >= ep) break;
919 (void)printf(" tag=%x", EXTRACT_16BITS(bp));
920 bp += sizeof(u_int16_t);
921 if (bp >= ep) break;
922 (void)printf(" hashmlen=%d", bp[0]);
923 if (bp + 1 >= ep) break;
924 (void)printf(" BSRprio=%d", bp[1]);
925 bp += 2;
926
927 /* Encoded-Unicast-BSR-Address */
928 if (bp >= ep) break;
929 (void)printf(" BSR=");
930 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
931 (void)printf("...");
932 break;
933 }
934 bp += advance;
935
936 for (i = 0; bp < ep; i++) {
937 /* Encoded-Group Address */
938 (void)printf(" (group%d: ", i);
939 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
940 < 0) {
941 (void)printf("...)");
942 goto bs_done;
943 }
944 bp += advance;
945
946 /* RP-Count, Frag RP-Cnt, and rsvd */
947 if (bp >= ep) {
948 (void)printf("...)");
949 goto bs_done;
950 }
951 (void)printf(" RPcnt=%d", bp[0]);
952 if (bp + 1 >= ep) {
953 (void)printf("...)");
954 goto bs_done;
955 }
956 (void)printf(" FRPcnt=%d", frpcnt = bp[1]);
957 bp += 4;
958
959 for (j = 0; j < frpcnt && bp < ep; j++) {
960 /* each RP info */
961 (void)printf(" RP%d=", j);
962 if ((advance = pimv2_addr_print(bp,
963 pimv2_unicast,
964 0)) < 0) {
965 (void)printf("...)");
966 goto bs_done;
967 }
968 bp += advance;
969
970 if (bp + 1 >= ep) {
971 (void)printf("...)");
972 goto bs_done;
973 }
974 (void)printf(",holdtime=");
975 relts_print(EXTRACT_16BITS(bp));
976 if (bp + 2 >= ep) {
977 (void)printf("...)");
978 goto bs_done;
979 }
980 (void)printf(",prio=%d", bp[2]);
981 bp += 4;
982 }
983 (void)printf(")");
984 }
985 bs_done:
986 break;
987 }
988 case PIMV2_TYPE_ASSERT:
989 bp += 4; len -= 4;
990 if (bp >= ep)
991 break;
992 (void)printf(" group=");
993 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
994 (void)printf("...");
995 break;
996 }
997 bp += advance; len -= advance;
998 if (bp >= ep)
999 break;
1000 (void)printf(" src=");
1001 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1002 (void)printf("...");
1003 break;
1004 }
1005 bp += advance; len -= advance;
1006 if (bp + 8 > ep)
1007 break;
1008 if (bp[0] & 0x80)
1009 (void)printf(" RPT");
1010 (void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff);
1011 (void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
1012 break;
1013
1014 case PIMV2_TYPE_CANDIDATE_RP:
1015 {
1016 int i, pfxcnt;
1017 bp += 4;
1018
1019 /* Prefix-Cnt, Priority, and Holdtime */
1020 if (bp >= ep) break;
1021 (void)printf(" prefix-cnt=%d", bp[0]);
1022 pfxcnt = bp[0];
1023 if (bp + 1 >= ep) break;
1024 (void)printf(" prio=%d", bp[1]);
1025 if (bp + 3 >= ep) break;
1026 (void)printf(" holdtime=");
1027 relts_print(EXTRACT_16BITS(&bp[2]));
1028 bp += 4;
1029
1030 /* Encoded-Unicast-RP-Address */
1031 if (bp >= ep) break;
1032 (void)printf(" RP=");
1033 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1034 (void)printf("...");
1035 break;
1036 }
1037 bp += advance;
1038
1039 /* Encoded-Group Addresses */
1040 for (i = 0; i < pfxcnt && bp < ep; i++) {
1041 (void)printf(" Group%d=", i);
1042 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
1043 < 0) {
1044 (void)printf("...");
1045 break;
1046 }
1047 bp += advance;
1048 }
1049 break;
1050 }
1051
1052 case PIMV2_TYPE_PRUNE_REFRESH:
1053 (void)printf(" src=");
1054 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1055 (void)printf("...");
1056 break;
1057 }
1058 bp += advance;
1059 (void)printf(" grp=");
1060 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
1061 (void)printf("...");
1062 break;
1063 }
1064 bp += advance;
1065 (void)printf(" forwarder=");
1066 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1067 (void)printf("...");
1068 break;
1069 }
1070 bp += advance;
1071 TCHECK2(bp[0], 2);
1072 (void)printf(" TUNR ");
1073 relts_print(EXTRACT_16BITS(bp));
1074 break;
1075
1076
1077 default:
1078 (void)printf(" [type %d]", PIM_TYPE(pim->pim_typever));
1079 break;
1080 }
1081
1082 return;
1083
1084 trunc:
1085 (void)printf("[|pim]");
1086 }
1087
1088 /*
1089 * Local Variables:
1090 * c-style: whitesmith
1091 * c-basic-offset: 8
1092 * End:
1093 */
DragonFly BSD