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gerrit-public.fairphone.software / platform / external / tcpdump / 2949f58a438f6fd85f66a8b7ed4708042cde4b37 / . / print-ospf.c
blob: fd8f111a3c4ee589fd8d68ca79f3bb7db3c38dde [file] [log] [blame]
The Android Open Source Project2949f582009-03-03 19:30:46 -0800[diff] [blame^]1/*
2 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
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 * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
22 */
23
24#ifndef lint
25static const char rcsid[] _U_ =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.56.2.4 2006/12/13 08:24:27 hannes Exp $ (LBL)";
27#endif
28
29#ifdef HAVE_CONFIG_H
30#include "config.h"
31#endif
32
33#include <tcpdump-stdinc.h>
34
35#include <stdio.h>
36
37#include "interface.h"
38#include "addrtoname.h"
39#include "extract.h"
40#include "gmpls.h"
41
42#include "ospf.h"
43
44#include "ip.h"
45
46static struct tok ospf_option_values[] = {
47 { OSPF_OPTION_T, "TOS" },
48 { OSPF_OPTION_E, "External" },
49 { OSPF_OPTION_MC, "Multicast" },
50 { OSPF_OPTION_NP, "NSSA" },
51 { OSPF_OPTION_EA, "Advertise External" },
52 { OSPF_OPTION_DC, "Demand Circuit" },
53 { OSPF_OPTION_O, "Opaque" },
54 { OSPF_OPTION_DN, "Up/Down" },
55 { 0, NULL }
56};
57
58static struct tok ospf_authtype_values[] = {
59 { OSPF_AUTH_NONE, "none" },
60 { OSPF_AUTH_SIMPLE, "simple" },
61 { OSPF_AUTH_MD5, "MD5" },
62 { 0, NULL }
63};
64
65static struct tok ospf_rla_flag_values[] = {
66 { RLA_FLAG_B, "ABR" },
67 { RLA_FLAG_E, "ASBR" },
68 { RLA_FLAG_W1, "Virtual" },
69 { RLA_FLAG_W2, "W2" },
70 { 0, NULL }
71};
72
73static struct tok type2str[] = {
74 { OSPF_TYPE_UMD, "UMD" },
75 { OSPF_TYPE_HELLO, "Hello" },
76 { OSPF_TYPE_DD, "Database Description" },
77 { OSPF_TYPE_LS_REQ, "LS-Request" },
78 { OSPF_TYPE_LS_UPDATE, "LS-Update" },
79 { OSPF_TYPE_LS_ACK, "LS-Ack" },
80 { 0, NULL }
81};
82
83static struct tok lsa_values[] = {
84 { LS_TYPE_ROUTER, "Router" },
85 { LS_TYPE_NETWORK, "Network" },
86 { LS_TYPE_SUM_IP, "Summary" },
87 { LS_TYPE_SUM_ABR, "ASBR Summary" },
88 { LS_TYPE_ASE, "External" },
89 { LS_TYPE_GROUP, "Multicast Group" },
90 { LS_TYPE_NSSA, "NSSA" },
91 { LS_TYPE_OPAQUE_LL, "Link Local Opaque" },
92 { LS_TYPE_OPAQUE_AL, "Area Local Opaque" },
93 { LS_TYPE_OPAQUE_DW, "Domain Wide Opaque" },
94 { 0, NULL }
95};
96
97static struct tok ospf_dd_flag_values[] = {
98 { OSPF_DB_INIT, "Init" },
99 { OSPF_DB_MORE, "More" },
100 { OSPF_DB_MASTER, "Master" },
101 { 0, NULL }
102};
103
104static struct tok lsa_opaque_values[] = {
105 { LS_OPAQUE_TYPE_TE, "Traffic Engineering" },
106 { LS_OPAQUE_TYPE_GRACE, "Graceful restart" },
107 { LS_OPAQUE_TYPE_RI, "Router Information" },
108 { 0, NULL }
109};
110
111static struct tok lsa_opaque_te_tlv_values[] = {
112 { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" },
113 { LS_OPAQUE_TE_TLV_LINK, "Link" },
114 { 0, NULL }
115};
116
117static struct tok lsa_opaque_te_link_tlv_subtlv_values[] = {
118 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE, "Link Type" },
119 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID, "Link ID" },
120 { LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP, "Local Interface IP address" },
121 { LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP, "Remote Interface IP address" },
122 { LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC, "Traffic Engineering Metric" },
123 { LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW, "Maximum Bandwidth" },
124 { LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW, "Maximum Reservable Bandwidth" },
125 { LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW, "Unreserved Bandwidth" },
126 { LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP, "Administrative Group" },
127 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
128 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" },
129 { LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
130 { LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP, "Shared Risk Link Group" },
131 { LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS, "Bandwidth Constraints" },
132 { 0, NULL }
133};
134
135static struct tok lsa_opaque_grace_tlv_values[] = {
136 { LS_OPAQUE_GRACE_TLV_PERIOD, "Grace Period" },
137 { LS_OPAQUE_GRACE_TLV_REASON, "Graceful restart Reason" },
138 { LS_OPAQUE_GRACE_TLV_INT_ADDRESS, "IPv4 interface address" },
139 { 0, NULL }
140};
141
142static struct tok lsa_opaque_grace_tlv_reason_values[] = {
143 { LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN, "Unknown" },
144 { LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART, "Software Restart" },
145 { LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE, "Software Reload/Upgrade" },
146 { LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH, "Control Processor Switch" },
147 { 0, NULL }
148};
149
150static struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = {
151 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" },
152 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA, "Multi-Access" },
153 { 0, NULL }
154};
155
156static struct tok lsa_opaque_ri_tlv_values[] = {
157 { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" },
158 { 0, NULL }
159};
160
161static struct tok lsa_opaque_ri_tlv_cap_values[] = {
162 { 1, "Reserved" },
163 { 2, "Reserved" },
164 { 4, "Reserved" },
165 { 8, "Reserved" },
166 { 16, "graceful restart capable" },
167 { 32, "graceful restart helper" },
168 { 64, "Stub router support" },
169 { 128, "Traffic engineering" },
170 { 256, "p2p over LAN" },
171 { 512, "path computation server" },
172 { 0, NULL }
173};
174
175static char tstr[] = " [|ospf]";
176
177#ifdef WIN32
178#define inline __inline
179#endif /* WIN32 */
180
181static int ospf_print_lshdr(const struct lsa_hdr *);
182static const u_char *ospf_print_lsa(const struct lsa *);
183static int ospf_decode_v2(const struct ospfhdr *, const u_char *);
184
185static int
186ospf_print_lshdr(register const struct lsa_hdr *lshp)
187{
188 u_int ls_length;
189
190 TCHECK(lshp->ls_length);
191 ls_length = EXTRACT_16BITS(&lshp->ls_length);
192 if (ls_length < sizeof(struct lsa_hdr)) {
193 printf("\n\t Bogus length %u < %lu", ls_length,
194 (unsigned long)sizeof(struct lsa_hdr));
195 return(-1);
196 }
197
198 TCHECK(lshp->ls_seq); /* XXX - ls_length check checked this */
199 printf("\n\t Advertising Router: %s, seq 0x%08x, age %us, length: %u",
200 ipaddr_string(&lshp->ls_router),
201 EXTRACT_32BITS(&lshp->ls_seq),
202 EXTRACT_16BITS(&lshp->ls_age),
203 ls_length-(u_int)sizeof(struct lsa_hdr));
204
205 TCHECK(lshp->ls_type); /* XXX - ls_length check checked this */
206 switch (lshp->ls_type) {
207 /* the LSA header for opaque LSAs was slightly changed */
208 case LS_TYPE_OPAQUE_LL:
209 case LS_TYPE_OPAQUE_AL:
210 case LS_TYPE_OPAQUE_DW:
211 printf("\n\t %s LSA (%d), Opaque-Type: %s LSA (%u), Opaque-ID: %u",
212 tok2str(lsa_values,"unknown",lshp->ls_type),
213 lshp->ls_type,
214
215 tok2str(lsa_opaque_values,
216 "unknown",
217 *(&lshp->un_lsa_id.opaque_field.opaque_type)),
218 *(&lshp->un_lsa_id.opaque_field.opaque_type),
219 EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id)
220
221 );
222 break;
223
224 /* all other LSA types use regular style LSA headers */
225 default:
226 printf("\n\t %s LSA (%d), LSA-ID: %s",
227 tok2str(lsa_values,"unknown",lshp->ls_type),
228 lshp->ls_type,
229 ipaddr_string(&lshp->un_lsa_id.lsa_id));
230 break;
231 }
232
233 TCHECK(lshp->ls_options); /* XXX - ls_length check checked this */
234 printf("\n\t Options: [%s]", bittok2str(ospf_option_values,"none",lshp->ls_options));
235
236 return (ls_length);
237trunc:
238 return (-1);
239}
240
241/*
242 * Print a single link state advertisement. If truncated or if LSA length
243 * field is less than the length of the LSA header, return NULl, else
244 * return pointer to data past end of LSA.
245 */
246static const u_int8_t *
247ospf_print_lsa(register const struct lsa *lsap)
248{
249 register const u_int8_t *ls_end;
250 register const struct rlalink *rlp;
251 register const struct tos_metric *tosp;
252 register const struct in_addr *ap;
253 register const struct aslametric *almp;
254 register const struct mcla *mcp;
255 register const u_int32_t *lp;
256 register int j, k, tlv_type, tlv_length, subtlv_type, subtlv_length, priority_level, te_class;
257 register int ls_length;
258 const u_int8_t *tptr;
259 int count_srlg;
260 union { /* int to float conversion buffer for several subTLVs */
261 float f;
262 u_int32_t i;
263 } bw;
264
265 tptr = (u_int8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */
266 ls_length = ospf_print_lshdr(&lsap->ls_hdr);
267 if (ls_length == -1)
268 return(NULL);
269 ls_end = (u_int8_t *)lsap + ls_length;
270 ls_length -= sizeof(struct lsa_hdr);
271
272 switch (lsap->ls_hdr.ls_type) {
273
274 case LS_TYPE_ROUTER:
275 TCHECK(lsap->lsa_un.un_rla.rla_flags);
276 printf("\n\t Router LSA Options: [%s]", bittok2str(ospf_rla_flag_values,"none",lsap->lsa_un.un_rla.rla_flags));
277
278 TCHECK(lsap->lsa_un.un_rla.rla_count);
279 j = EXTRACT_16BITS(&lsap->lsa_un.un_rla.rla_count);
280 TCHECK(lsap->lsa_un.un_rla.rla_link);
281 rlp = lsap->lsa_un.un_rla.rla_link;
282 while (j--) {
283 TCHECK(*rlp);
284 switch (rlp->link_type) {
285
286 case RLA_TYPE_VIRTUAL:
287 printf("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s",
288 ipaddr_string(&rlp->link_id),
289 ipaddr_string(&rlp->link_data));
290 break;
291
292 case RLA_TYPE_ROUTER:
293 printf("\n\t Neighbor Router-ID: %s, Interface Address: %s",
294 ipaddr_string(&rlp->link_id),
295 ipaddr_string(&rlp->link_data));
296 break;
297
298 case RLA_TYPE_TRANSIT:
299 printf("\n\t Neighbor Network-ID: %s, Interface Address: %s",
300 ipaddr_string(&rlp->link_id),
301 ipaddr_string(&rlp->link_data));
302 break;
303
304 case RLA_TYPE_STUB:
305 printf("\n\t Stub Network: %s, Mask: %s",
306 ipaddr_string(&rlp->link_id),
307 ipaddr_string(&rlp->link_data));
308 break;
309
310 default:
311 printf("\n\t Unknown Router Link Type (%u)",
312 rlp->link_type);
313 return (ls_end);
314 }
315 printf(", tos 0, metric: %d", EXTRACT_16BITS(&rlp->link_tos0metric));
316 tosp = (struct tos_metric *)
317 ((sizeof rlp->link_tos0metric) + (u_char *) rlp);
318 for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) {
319 TCHECK(*tosp);
320 printf(", tos %d, metric: %d",
321 tosp->tos_type,
322 EXTRACT_16BITS(&tosp->tos_metric));
323 }
324 rlp = (struct rlalink *)((u_char *)(rlp + 1) +
325 ((rlp->link_toscount) * sizeof(*tosp)));
326 }
327 break;
328
329 case LS_TYPE_NETWORK:
330 TCHECK(lsap->lsa_un.un_nla.nla_mask);
331 printf("\n\t Mask %s\n\t Connected Routers:",
332 ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
333 ap = lsap->lsa_un.un_nla.nla_router;
334 while ((u_char *)ap < ls_end) {
335 TCHECK(*ap);
336 printf("\n\t %s", ipaddr_string(ap));
337 ++ap;
338 }
339 break;
340
341 case LS_TYPE_SUM_IP:
342 TCHECK(lsap->lsa_un.un_nla.nla_mask);
343 printf("\n\t Mask %s",
344 ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
345 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
346 lp = lsap->lsa_un.un_sla.sla_tosmetric;
347 /* suppress tos if its not supported */
348 if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
349 printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
350 break;
351 }
352 while ((u_char *)lp < ls_end) {
353 register u_int32_t ul;
354
355 TCHECK(*lp);
356 ul = EXTRACT_32BITS(lp);
357 printf(", tos %d metric %d",
358 (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
359 ul & SLA_MASK_METRIC);
360 ++lp;
361 }
362 break;
363
364 case LS_TYPE_SUM_ABR:
365 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
366 lp = lsap->lsa_un.un_sla.sla_tosmetric;
367 /* suppress tos if its not supported */
368 if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
369 printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
370 break;
371 }
372 while ((u_char *)lp < ls_end) {
373 register u_int32_t ul;
374
375 TCHECK(*lp);
376 ul = EXTRACT_32BITS(lp);
377 printf(", tos %d metric %d",
378 (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
379 ul & SLA_MASK_METRIC);
380 ++lp;
381 }
382 break;
383
384 case LS_TYPE_ASE:
385 case LS_TYPE_NSSA: /* fall through - those LSAs share the same format */
386 TCHECK(lsap->lsa_un.un_nla.nla_mask);
387 printf("\n\t Mask %s",
388 ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
389
390 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
391 almp = lsap->lsa_un.un_asla.asla_metric;
392 while ((u_char *)almp < ls_end) {
393 register u_int32_t ul;
394
395 TCHECK(almp->asla_tosmetric);
396 ul = EXTRACT_32BITS(&almp->asla_tosmetric);
397 printf(", type %d, tos %d metric:",
398 (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
399 (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS);
400 if ((ul & ASLA_MASK_METRIC)==0xffffff)
401 printf(" infinite");
402 else
403 printf(" %d", (ul & ASLA_MASK_METRIC));
404
405 TCHECK(almp->asla_forward);
406 if (almp->asla_forward.s_addr) {
407 printf(", forward %s",
408 ipaddr_string(&almp->asla_forward));
409 }
410 TCHECK(almp->asla_tag);
411 if (almp->asla_tag.s_addr) {
412 printf(", tag %s",
413 ipaddr_string(&almp->asla_tag));
414 }
415 ++almp;
416 }
417 break;
418
419 case LS_TYPE_GROUP:
420 /* Multicast extensions as of 23 July 1991 */
421 mcp = lsap->lsa_un.un_mcla;
422 while ((u_char *)mcp < ls_end) {
423 TCHECK(mcp->mcla_vid);
424 switch (EXTRACT_32BITS(&mcp->mcla_vtype)) {
425
426 case MCLA_VERTEX_ROUTER:
427 printf("\n\t Router Router-ID %s",
428 ipaddr_string(&mcp->mcla_vid));
429 break;
430
431 case MCLA_VERTEX_NETWORK:
432 printf("\n\t Network Designated Router %s",
433 ipaddr_string(&mcp->mcla_vid));
434 break;
435
436 default:
437 printf("\n\t unknown VertexType (%u)",
438 EXTRACT_32BITS(&mcp->mcla_vtype));
439 break;
440 }
441 ++mcp;
442 }
443 break;
444
445 case LS_TYPE_OPAQUE_LL: /* fall through */
446 case LS_TYPE_OPAQUE_AL:
447 case LS_TYPE_OPAQUE_DW:
448
449 switch (*(&lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) {
450 case LS_OPAQUE_TYPE_RI:
451 tptr = (u_int8_t *)(&lsap->lsa_un.un_ri_tlv.type);
452
453 while (ls_length != 0) {
454 TCHECK2(*tptr, 4);
455 if (ls_length < 4) {
456 printf("\n\t Remaining LS length %u < 4", ls_length);
457 return(ls_end);
458 }
459 tlv_type = EXTRACT_16BITS(tptr);
460 tlv_length = EXTRACT_16BITS(tptr+2);
461 tptr+=4;
462 ls_length-=4;
463
464 printf("\n\t %s TLV (%u), length: %u, value: ",
465 tok2str(lsa_opaque_ri_tlv_values,"unknown",tlv_type),
466 tlv_type,
467 tlv_length);
468
469 if (tlv_length > ls_length) {
470 printf("\n\t Bogus length %u > %u", tlv_length,
471 ls_length);
472 return(ls_end);
473 }
474 ls_length-=tlv_length;
475 TCHECK2(*tptr, tlv_length);
476 switch(tlv_type) {
477
478 case LS_OPAQUE_RI_TLV_CAP:
479 if (tlv_length != 4) {
480 printf("\n\t Bogus length %u != 4", tlv_length);
481 return(ls_end);
482 }
483 printf("Capabilities: %s",
484 bittok2str(lsa_opaque_ri_tlv_cap_values, "Unknown", EXTRACT_32BITS(tptr)));
485 break;
486 default:
487 if (vflag <= 1) {
488 if(!print_unknown_data(tptr,"\n\t ",tlv_length))
489 return(ls_end);
490 }
491 break;
492
493 }
494 tptr+=tlv_length;
495 }
496
497 break;
498 case LS_OPAQUE_TYPE_GRACE:
499 tptr = (u_int8_t *)(&lsap->lsa_un.un_grace_tlv.type);
500
501 while (ls_length != 0) {
502 TCHECK2(*tptr, 4);
503 if (ls_length < 4) {
504 printf("\n\t Remaining LS length %u < 4", ls_length);
505 return(ls_end);
506 }
507 tlv_type = EXTRACT_16BITS(tptr);
508 tlv_length = EXTRACT_16BITS(tptr+2);
509 tptr+=4;
510 ls_length-=4;
511
512 printf("\n\t %s TLV (%u), length: %u, value: ",
513 tok2str(lsa_opaque_grace_tlv_values,"unknown",tlv_type),
514 tlv_type,
515 tlv_length);
516
517 if (tlv_length > ls_length) {
518 printf("\n\t Bogus length %u > %u", tlv_length,
519 ls_length);
520 return(ls_end);
521 }
522 ls_length-=tlv_length;
523 TCHECK2(*tptr, tlv_length);
524 switch(tlv_type) {
525
526 case LS_OPAQUE_GRACE_TLV_PERIOD:
527 if (tlv_length != 4) {
528 printf("\n\t Bogus length %u != 4", tlv_length);
529 return(ls_end);
530 }
531 printf("%us",EXTRACT_32BITS(tptr));
532 break;
533 case LS_OPAQUE_GRACE_TLV_REASON:
534 if (tlv_length != 1) {
535 printf("\n\t Bogus length %u != 1", tlv_length);
536 return(ls_end);
537 }
538 printf("%s (%u)",
539 tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", *tptr),
540 *tptr);
541 break;
542 case LS_OPAQUE_GRACE_TLV_INT_ADDRESS:
543 if (tlv_length != 4) {
544 printf("\n\t Bogus length %u != 4", tlv_length);
545 return(ls_end);
546 }
547 printf("%s", ipaddr_string(tptr));
548 break;
549 default:
550 if (vflag <= 1) {
551 if(!print_unknown_data(tptr,"\n\t ",tlv_length))
552 return(ls_end);
553 }
554 break;
555
556 }
557 tptr+=tlv_length;
558 }
559
560 break;
561 case LS_OPAQUE_TYPE_TE:
562 tptr = (u_int8_t *)(&lsap->lsa_un.un_te_lsa_tlv.type);
563
564 while (ls_length != 0) {
565 TCHECK2(*tptr, 4);
566 if (ls_length < 4) {
567 printf("\n\t Remaining LS length %u < 4", ls_length);
568 return(ls_end);
569 }
570 tlv_type = EXTRACT_16BITS(tptr);
571 tlv_length = EXTRACT_16BITS(tptr+2);
572 tptr+=4;
573 ls_length-=4;
574
575 printf("\n\t %s TLV (%u), length: %u",
576 tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type),
577 tlv_type,
578 tlv_length);
579
580 if (tlv_length > ls_length) {
581 printf("\n\t Bogus length %u > %u", tlv_length,
582 ls_length);
583 return(ls_end);
584 }
585 ls_length-=tlv_length;
586 switch(tlv_type) {
587 case LS_OPAQUE_TE_TLV_LINK:
588 while (tlv_length != 0) {
589 if (tlv_length < 4) {
590 printf("\n\t Remaining TLV length %u < 4",
591 tlv_length);
592 return(ls_end);
593 }
594 TCHECK2(*tptr, 4);
595 subtlv_type = EXTRACT_16BITS(tptr);
596 subtlv_length = EXTRACT_16BITS(tptr+2);
597 tptr+=4;
598 tlv_length-=4;
599
600 printf("\n\t %s subTLV (%u), length: %u",
601 tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type),
602 subtlv_type,
603 subtlv_length);
604
605 TCHECK2(*tptr, subtlv_length);
606 switch(subtlv_type) {
607 case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP:
608 printf(", 0x%08x", EXTRACT_32BITS(tptr));
609 break;
610 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID:
611 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID:
612 printf(", %s (0x%08x)",
613 ipaddr_string(tptr),
614 EXTRACT_32BITS(tptr));
615 if (subtlv_length == 8) /* draft-ietf-ccamp-ospf-gmpls-extensions */
616 printf(", %s (0x%08x)",
617 ipaddr_string(tptr+4),
618 EXTRACT_32BITS(tptr+4));
619 break;
620 case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP:
621 case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP:
622 printf(", %s", ipaddr_string(tptr));
623 break;
624 case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW:
625 case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW:
626 bw.i = EXTRACT_32BITS(tptr);
627 printf(", %.3f Mbps", bw.f*8/1000000 );
628 break;
629 case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW:
630 for (te_class = 0; te_class < 8; te_class++) {
631 bw.i = EXTRACT_32BITS(tptr+te_class*4);
632 printf("\n\t\tTE-Class %u: %.3f Mbps",
633 te_class,
634 bw.f*8/1000000 );
635 }
636 break;
637 case LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS:
638 printf("\n\t\tBandwidth Constraints Model ID: %s (%u)",
639 tok2str(diffserv_te_bc_values, "unknown", *tptr),
640 *tptr);
641 /* decode BCs until the subTLV ends */
642 for (te_class = 0; te_class < (subtlv_length-4)/4; te_class++) {
643 bw.i = EXTRACT_32BITS(tptr+4+te_class*4);
644 printf("\n\t\t Bandwidth constraint CT%u: %.3f Mbps",
645 te_class,
646 bw.f*8/1000000 );
647 }
648 break;
649 case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC:
650 printf(", Metric %u", EXTRACT_32BITS(tptr));
651 break;
652 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE:
653 printf(", %s, Priority %u",
654 bittok2str(gmpls_link_prot_values, "none", *tptr),
655 *(tptr+1));
656 break;
657 case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR:
658 printf("\n\t\tInterface Switching Capability: %s",
659 tok2str(gmpls_switch_cap_values, "Unknown", *(tptr)));
660 printf("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:",
661 tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
662 for (priority_level = 0; priority_level < 8; priority_level++) {
663 bw.i = EXTRACT_32BITS(tptr+4+(priority_level*4));
664 printf("\n\t\t priority level %d: %.3f Mbps",
665 priority_level,
666 bw.f*8/1000000 );
667 }
668 break;
669 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE:
670 printf(", %s (%u)",
671 tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",*tptr),
672 *tptr);
673 break;
674
675 case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP:
676 count_srlg = subtlv_length / 4;
677 if (count_srlg != 0)
678 printf("\n\t\t Shared risk group: ");
679 while (count_srlg > 0) {
680 bw.i = EXTRACT_32BITS(tptr);
681 printf("%d",bw.i);
682 tptr+=4;
683 count_srlg--;
684 if (count_srlg > 0)
685 printf(", ");
686 }
687 break;
688
689 default:
690 if (vflag <= 1) {
691 if(!print_unknown_data(tptr,"\n\t\t",subtlv_length))
692 return(ls_end);
693 }
694 break;
695 }
696 /* in OSPF everything has to be 32-bit aligned, including TLVs */
697 if (subtlv_length%4 != 0)
698 subtlv_length+=4-(subtlv_length%4);
699
700 tlv_length-=subtlv_length;
701 tptr+=subtlv_length;
702
703 }
704 break;
705
706 case LS_OPAQUE_TE_TLV_ROUTER:
707 if (tlv_length < 4) {
708 printf("\n\t TLV length %u < 4", tlv_length);
709 return(ls_end);
710 }
711 TCHECK2(*tptr, 4);
712 printf(", %s", ipaddr_string(tptr));
713 break;
714
715 default:
716 if (vflag <= 1) {
717 if(!print_unknown_data(tptr,"\n\t ",tlv_length))
718 return(ls_end);
719 }
720 break;
721 }
722 tptr+=tlv_length;
723 }
724 break;
725 }
726 break;
727 default:
728 if (vflag <= 1) {
729 if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown,
730 "\n\t ", ls_length))
731 return(ls_end);
732 }
733 break;
734 }
735
736 /* do we want to see an additionally hexdump ? */
737 if (vflag> 1)
738 if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown,
739 "\n\t ", ls_length)) {
740 return(ls_end);
741 }
742
743 return (ls_end);
744trunc:
745 return (NULL);
746}
747
748static int
749ospf_decode_v2(register const struct ospfhdr *op,
750 register const u_char *dataend)
751{
752 register const struct in_addr *ap;
753 register const struct lsr *lsrp;
754 register const struct lsa_hdr *lshp;
755 register const struct lsa *lsap;
756 register u_int32_t lsa_count,lsa_count_max;
757
758 switch (op->ospf_type) {
759
760 case OSPF_TYPE_UMD:
761 /*
762 * Rob Coltun's special monitoring packets;
763 * do nothing
764 */
765 break;
766
767 case OSPF_TYPE_HELLO:
768 printf("\n\tOptions: [%s]",
769 bittok2str(ospf_option_values,"none",op->ospf_hello.hello_options));
770
771 TCHECK(op->ospf_hello.hello_deadint);
772 printf("\n\t Hello Timer: %us, Dead Timer %us, Mask: %s, Priority: %u",
773 EXTRACT_16BITS(&op->ospf_hello.hello_helloint),
774 EXTRACT_32BITS(&op->ospf_hello.hello_deadint),
775 ipaddr_string(&op->ospf_hello.hello_mask),
776 op->ospf_hello.hello_priority);
777
778 TCHECK(op->ospf_hello.hello_dr);
779 if (op->ospf_hello.hello_dr.s_addr != 0)
780 printf("\n\t Designated Router %s",
781 ipaddr_string(&op->ospf_hello.hello_dr));
782
783 TCHECK(op->ospf_hello.hello_bdr);
784 if (op->ospf_hello.hello_bdr.s_addr != 0)
785 printf(", Backup Designated Router %s",
786 ipaddr_string(&op->ospf_hello.hello_bdr));
787
788 ap = op->ospf_hello.hello_neighbor;
789 if ((u_char *)ap < dataend)
790 printf("\n\t Neighbor List:");
791 while ((u_char *)ap < dataend) {
792 TCHECK(*ap);
793 printf("\n\t %s", ipaddr_string(ap));
794 ++ap;
795 }
796 break; /* HELLO */
797
798 case OSPF_TYPE_DD:
799 TCHECK(op->ospf_db.db_options);
800 printf("\n\tOptions: [%s]",
801 bittok2str(ospf_option_values,"none",op->ospf_db.db_options));
802 TCHECK(op->ospf_db.db_flags);
803 printf(", DD Flags: [%s]",
804 bittok2str(ospf_dd_flag_values,"none",op->ospf_db.db_flags));
805
806 if (vflag) {
807 /* Print all the LS adv's */
808 lshp = op->ospf_db.db_lshdr;
809 while (ospf_print_lshdr(lshp) != -1) {
810 ++lshp;
811 }
812 }
813 break;
814
815 case OSPF_TYPE_LS_REQ:
816 lsrp = op->ospf_lsr;
817 while ((u_char *)lsrp < dataend) {
818 TCHECK(*lsrp);
819
820 printf("\n\t Advertising Router: %s, %s LSA (%u)",
821 ipaddr_string(&lsrp->ls_router),
822 tok2str(lsa_values,"unknown",EXTRACT_32BITS(lsrp->ls_type)),
823 EXTRACT_32BITS(&lsrp->ls_type));
824
825 switch (EXTRACT_32BITS(lsrp->ls_type)) {
826 /* the LSA header for opaque LSAs was slightly changed */
827 case LS_TYPE_OPAQUE_LL:
828 case LS_TYPE_OPAQUE_AL:
829 case LS_TYPE_OPAQUE_DW:
830 printf(", Opaque-Type: %s LSA (%u), Opaque-ID: %u",
831 tok2str(lsa_opaque_values, "unknown",lsrp->un_ls_stateid.opaque_field.opaque_type),
832 lsrp->un_ls_stateid.opaque_field.opaque_type,
833 EXTRACT_24BITS(&lsrp->un_ls_stateid.opaque_field.opaque_id));
834 break;
835 default:
836 printf(", LSA-ID: %s",
837 ipaddr_string(&lsrp->un_ls_stateid.ls_stateid));
838 break;
839 }
840
841 ++lsrp;
842 }
843 break;
844
845 case OSPF_TYPE_LS_UPDATE:
846 lsap = op->ospf_lsu.lsu_lsa;
847 TCHECK(op->ospf_lsu.lsu_count);
848 lsa_count_max = EXTRACT_32BITS(&op->ospf_lsu.lsu_count);
849 printf(", %d LSA%s",lsa_count_max, lsa_count_max > 1 ? "s" : "");
850 for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) {
851 printf("\n\t LSA #%u",lsa_count);
852 lsap = (const struct lsa *)ospf_print_lsa(lsap);
853 if (lsap == NULL)
854 goto trunc;
855 }
856 break;
857
858 case OSPF_TYPE_LS_ACK:
859 lshp = op->ospf_lsa.lsa_lshdr;
860 while (ospf_print_lshdr(lshp) != -1) {
861 ++lshp;
862 }
863 break;
864
865 default:
866 printf("v2 type (%d)", op->ospf_type);
867 break;
868 }
869 return (0);
870trunc:
871 return (1);
872}
873
874void
875ospf_print(register const u_char *bp, register u_int length,
876 const u_char *bp2 _U_)
877{
878 register const struct ospfhdr *op;
879 register const u_char *dataend;
880 register const char *cp;
881
882 op = (struct ospfhdr *)bp;
883
884 /* XXX Before we do anything else, strip off the MD5 trailer */
885 TCHECK(op->ospf_authtype);
886 if (EXTRACT_16BITS(&op->ospf_authtype) == OSPF_AUTH_MD5) {
887 length -= OSPF_AUTH_MD5_LEN;
888 snapend -= OSPF_AUTH_MD5_LEN;
889 }
890
891 /* If the type is valid translate it, or just print the type */
892 /* value. If it's not valid, say so and return */
893 TCHECK(op->ospf_type);
894 cp = tok2str(type2str, "unknown LS-type", op->ospf_type);
895 printf("OSPFv%u, %s, length: %u",
896 op->ospf_version,
897 cp,
898 length);
899 if (*cp == 'u')
900 return;
901
902 if(!vflag) /* non verbose - so lets bail out here */
903 return;
904
905 TCHECK(op->ospf_len);
906 if (length != EXTRACT_16BITS(&op->ospf_len)) {
907 printf(" [len %d]", EXTRACT_16BITS(&op->ospf_len));
908 return;
909 }
910 dataend = bp + length;
911
912 TCHECK(op->ospf_routerid);
913 printf("\n\tRouter-ID: %s", ipaddr_string(&op->ospf_routerid));
914
915 TCHECK(op->ospf_areaid);
916 if (op->ospf_areaid.s_addr != 0)
917 printf(", Area %s", ipaddr_string(&op->ospf_areaid));
918 else
919 printf(", Backbone Area");
920
921 if (vflag) {
922 /* Print authentication data (should we really do this?) */
923 TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata));
924
925 printf(", Authentication Type: %s (%u)",
926 tok2str(ospf_authtype_values,"unknown",EXTRACT_16BITS(&op->ospf_authtype)),
927 EXTRACT_16BITS(&op->ospf_authtype));
928
929 switch (EXTRACT_16BITS(&op->ospf_authtype)) {
930
931 case OSPF_AUTH_NONE:
932 break;
933
934 case OSPF_AUTH_SIMPLE:
935 printf("\n\tSimple text password: ");
936 safeputs(op->ospf_authdata, OSPF_AUTH_SIMPLE_LEN);
937 break;
938
939 case OSPF_AUTH_MD5:
940 printf("\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x",
941 *((op->ospf_authdata)+2),
942 *((op->ospf_authdata)+3),
943 EXTRACT_32BITS((op->ospf_authdata)+4));
944 break;
945
946 default:
947 return;
948 }
949 }
950 /* Do rest according to version. */
951 switch (op->ospf_version) {
952
953 case 2:
954 /* ospf version 2 */
955 if (ospf_decode_v2(op, dataend))
956 goto trunc;
957 break;
958
959 default:
960 printf(" ospf [version %d]", op->ospf_version);
961 break;
962 } /* end switch on version */
963
964 return;
965trunc:
966 fputs(tstr, stdout);
967}