print-ospf6.c revision 1.3
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 (at) mitchell.cit.cornell.edu) 22 */ 23 24 #include <sys/cdefs.h> 25 #ifndef lint 26 #if 0 27 static const char rcsid[] _U_ = 28 "@(#) Header: /tcpdump/master/tcpdump/print-ospf6.c,v 1.15 2006-09-13 06:31:11 guy Exp (LBL)"; 29 #else 30 __RCSID("$NetBSD: print-ospf6.c,v 1.3 2013/04/06 19:33:08 christos Exp $"); 31 #endif 32 #endif 33 34 #ifdef HAVE_CONFIG_H 35 #include "config.h" 36 #endif 37 38 #include <tcpdump-stdinc.h> 39 40 #include <stdio.h> 41 #include <string.h> 42 43 #include "interface.h" 44 #include "addrtoname.h" 45 #include "extract.h" 46 47 #include "ospf.h" 48 #include "ospf6.h" 49 50 static const struct tok ospf6_option_values[] = { 51 { OSPF6_OPTION_V6, "V6" }, 52 { OSPF6_OPTION_E, "External" }, 53 { OSPF6_OPTION_MC, "Multicast" }, 54 { OSPF6_OPTION_N, "NSSA" }, 55 { OSPF6_OPTION_R, "Router" }, 56 { OSPF6_OPTION_DC, "Demand Circuit" }, 57 { 0, NULL } 58 }; 59 60 static const struct tok ospf6_rla_flag_values[] = { 61 { RLA_FLAG_B, "ABR" }, 62 { RLA_FLAG_E, "External" }, 63 { RLA_FLAG_V, "Virtual-Link Endpoint" }, 64 { RLA_FLAG_W, "Wildcard Receiver" }, 65 { RLA_FLAG_N, "NSSA Translator" }, 66 { 0, NULL } 67 }; 68 69 static const struct tok ospf6_asla_flag_values[] = { 70 { ASLA_FLAG_EXTERNAL, "External Type 2" }, 71 { ASLA_FLAG_FWDADDR, "Fforwarding" }, 72 { ASLA_FLAG_ROUTETAG, "Tag" }, 73 { 0, NULL } 74 }; 75 76 static struct tok ospf6_type_values[] = { 77 { OSPF_TYPE_HELLO, "Hello" }, 78 { OSPF_TYPE_DD, "Database Description" }, 79 { OSPF_TYPE_LS_REQ, "LS-Request" }, 80 { OSPF_TYPE_LS_UPDATE, "LS-Update" }, 81 { OSPF_TYPE_LS_ACK, "LS-Ack" }, 82 { 0, NULL } 83 }; 84 85 static struct tok ospf6_lsa_values[] = { 86 { LS_TYPE_ROUTER, "Router" }, 87 { LS_TYPE_NETWORK, "Network" }, 88 { LS_TYPE_INTER_AP, "Inter-Area Prefix" }, 89 { LS_TYPE_INTER_AR, "Inter-Area Router" }, 90 { LS_TYPE_ASE, "External" }, 91 { LS_TYPE_GROUP, "Multicast Group" }, 92 { LS_TYPE_NSSA, "NSSA" }, 93 { LS_TYPE_LINK, "Link" }, 94 { LS_TYPE_INTRA_AP, "Intra-Area Prefix" }, 95 { LS_TYPE_INTRA_ATE, "Intra-Area TE" }, 96 { LS_TYPE_GRACE, "Grace" }, 97 { 0, NULL } 98 }; 99 100 static struct tok ospf6_ls_scope_values[] = { 101 { LS_SCOPE_LINKLOCAL, "Link Local" }, 102 { LS_SCOPE_AREA, "Area Local" }, 103 { LS_SCOPE_AS, "Domain Wide" }, 104 { 0, NULL } 105 }; 106 107 static struct tok ospf6_dd_flag_values[] = { 108 { OSPF6_DB_INIT, "Init" }, 109 { OSPF6_DB_MORE, "More" }, 110 { OSPF6_DB_MASTER, "Master" }, 111 { 0, NULL } 112 }; 113 114 static struct tok ospf6_lsa_prefix_option_values[] = { 115 { LSA_PREFIX_OPT_NU, "No Unicast" }, 116 { LSA_PREFIX_OPT_LA, "Local address" }, 117 { LSA_PREFIX_OPT_MC, "Multicast" }, 118 { LSA_PREFIX_OPT_P, "Propagate" }, 119 { LSA_PREFIX_OPT_DN, "Down" }, 120 { 0, NULL } 121 }; 122 123 static char tstr[] = " [|ospf3]"; 124 125 #ifdef WIN32 126 #define inline __inline 127 #endif /* WIN32 */ 128 129 /* Forwards */ 130 static void ospf6_print_ls_type(u_int, const rtrid_t *); 131 static int ospf6_print_lshdr(const struct lsa6_hdr *); 132 static int ospf6_print_lsa(const struct lsa6 *); 133 static int ospf6_decode_v3(const struct ospf6hdr *, const u_char *); 134 135 136 static void 137 ospf6_print_ls_type(register u_int ls_type, register const rtrid_t *ls_stateid) 138 { 139 printf("\n\t %s LSA (%d), %s Scope%s, LSA-ID %s", 140 tok2str(ospf6_lsa_values, "Unknown", ls_type & LS_TYPE_MASK), 141 ls_type & LS_TYPE_MASK, 142 tok2str(ospf6_ls_scope_values, "Unknown", ls_type & LS_SCOPE_MASK), 143 ls_type &0x8000 ? ", transitive" : "", /* U-bit */ 144 ipaddr_string(ls_stateid)); 145 } 146 147 static int 148 ospf6_print_lshdr(register const struct lsa6_hdr *lshp) 149 { 150 151 TCHECK(lshp->ls_type); 152 TCHECK(lshp->ls_seq); 153 154 printf("\n\t Advertising Router %s, seq 0x%08x, age %us, length %u", 155 ipaddr_string(&lshp->ls_router), 156 EXTRACT_32BITS(&lshp->ls_seq), 157 EXTRACT_16BITS(&lshp->ls_age), 158 EXTRACT_16BITS(&lshp->ls_length)-(u_int)sizeof(struct lsa6_hdr)); 159 160 ospf6_print_ls_type(EXTRACT_16BITS(&lshp->ls_type), &lshp->ls_stateid); 161 162 return (0); 163 trunc: 164 return (1); 165 } 166 167 static int 168 ospf6_print_lsaprefix(const u_int8_t *tptr, u_int lsa_length) 169 { 170 const struct lsa6_prefix *lsapp = (struct lsa6_prefix *)tptr; 171 u_int wordlen; 172 struct in6_addr prefix; 173 174 if (lsa_length < sizeof (*lsapp) - 4) 175 goto trunc; 176 lsa_length -= sizeof (*lsapp) - 4; 177 TCHECK2(*lsapp, sizeof (*lsapp) - 4); 178 wordlen = (lsapp->lsa_p_len + 31) / 32; 179 if (wordlen * 4 > sizeof(struct in6_addr)) { 180 printf(" bogus prefixlen /%d", lsapp->lsa_p_len); 181 goto trunc; 182 } 183 if (lsa_length < wordlen * 4) 184 goto trunc; 185 lsa_length -= wordlen * 4; 186 TCHECK2(lsapp->lsa_p_prefix, wordlen * 4); 187 memset(&prefix, 0, sizeof(prefix)); 188 memcpy(&prefix, lsapp->lsa_p_prefix, wordlen * 4); 189 printf("\n\t\t%s/%d", ip6addr_string(&prefix), 190 lsapp->lsa_p_len); 191 if (lsapp->lsa_p_opt) { 192 printf(", Options [%s]", 193 bittok2str(ospf6_lsa_prefix_option_values, 194 "none", lsapp->lsa_p_opt)); 195 } 196 printf(", metric %u", EXTRACT_16BITS(&lsapp->lsa_p_metric)); 197 return sizeof(*lsapp) - 4 + wordlen * 4; 198 199 trunc: 200 return -1; 201 } 202 203 204 /* 205 * Print a single link state advertisement. If truncated return 1, else 0. 206 */ 207 static int 208 ospf6_print_lsa(register const struct lsa6 *lsap) 209 { 210 register const struct rlalink6 *rlp; 211 #if 0 212 register const struct tos_metric *tosp; 213 #endif 214 register const rtrid_t *ap; 215 #if 0 216 register const struct aslametric *almp; 217 register const struct mcla *mcp; 218 #endif 219 register const struct llsa *llsap; 220 register const struct lsa6_prefix *lsapp; 221 #if 0 222 register const u_int32_t *lp; 223 #endif 224 register u_int prefixes; 225 register int bytelen; 226 register u_int length, lsa_length; 227 u_int32_t flags32; 228 const u_int8_t *tptr; 229 230 if (ospf6_print_lshdr(&lsap->ls_hdr)) 231 return (1); 232 TCHECK(lsap->ls_hdr.ls_length); 233 length = EXTRACT_16BITS(&lsap->ls_hdr.ls_length); 234 235 /* 236 * The LSA length includes the length of the header; 237 * it must have a value that's at least that length. 238 * If it does, find the length of what follows the 239 * header. 240 */ 241 if (length < sizeof(struct lsa6_hdr)) 242 return (1); 243 lsa_length = length - sizeof(struct lsa6_hdr); 244 tptr = (u_int8_t *)lsap+sizeof(struct lsa6_hdr); 245 246 switch (EXTRACT_16BITS(&lsap->ls_hdr.ls_type)) { 247 case LS_TYPE_ROUTER | LS_SCOPE_AREA: 248 if (lsa_length < sizeof (lsap->lsa_un.un_rla.rla_options)) 249 return (1); 250 lsa_length -= sizeof (lsap->lsa_un.un_rla.rla_options); 251 TCHECK(lsap->lsa_un.un_rla.rla_options); 252 printf("\n\t Options [%s]", 253 bittok2str(ospf6_option_values, "none", 254 EXTRACT_32BITS(&lsap->lsa_un.un_rla.rla_options))); 255 printf(", RLA-Flags [%s]", 256 bittok2str(ospf6_rla_flag_values, "none", 257 lsap->lsa_un.un_rla.rla_flags)); 258 259 rlp = lsap->lsa_un.un_rla.rla_link; 260 while (lsa_length != 0) { 261 if (lsa_length < sizeof (*rlp)) 262 return (1); 263 lsa_length -= sizeof (*rlp); 264 TCHECK(*rlp); 265 switch (rlp->link_type) { 266 267 case RLA_TYPE_VIRTUAL: 268 printf("\n\t Virtual Link: Neighbor Router-ID %s" 269 "\n\t Neighbor Interface-ID %s, Interface %s", 270 ipaddr_string(&rlp->link_nrtid), 271 ipaddr_string(&rlp->link_nifid), 272 ipaddr_string(&rlp->link_ifid)); 273 break; 274 275 case RLA_TYPE_ROUTER: 276 printf("\n\t Neighbor Router-ID %s" 277 "\n\t Neighbor Interface-ID %s, Interface %s", 278 ipaddr_string(&rlp->link_nrtid), 279 ipaddr_string(&rlp->link_nifid), 280 ipaddr_string(&rlp->link_ifid)); 281 break; 282 283 case RLA_TYPE_TRANSIT: 284 printf("\n\t Neighbor Network-ID %s" 285 "\n\t Neighbor Interface-ID %s, Interface %s", 286 ipaddr_string(&rlp->link_nrtid), 287 ipaddr_string(&rlp->link_nifid), 288 ipaddr_string(&rlp->link_ifid)); 289 break; 290 291 default: 292 printf("\n\t Unknown Router Links Type 0x%02x", 293 rlp->link_type); 294 return (0); 295 } 296 printf(", metric %d", EXTRACT_16BITS(&rlp->link_metric)); 297 rlp++; 298 } 299 break; 300 301 case LS_TYPE_NETWORK | LS_SCOPE_AREA: 302 if (lsa_length < sizeof (lsap->lsa_un.un_nla.nla_options)) 303 return (1); 304 lsa_length -= sizeof (lsap->lsa_un.un_nla.nla_options); 305 TCHECK(lsap->lsa_un.un_nla.nla_options); 306 printf("\n\t Options [%s]", 307 bittok2str(ospf6_option_values, "none", 308 EXTRACT_32BITS(&lsap->lsa_un.un_nla.nla_options))); 309 310 printf("\n\t Connected Routers:"); 311 ap = lsap->lsa_un.un_nla.nla_router; 312 while (lsa_length != 0) { 313 if (lsa_length < sizeof (*ap)) 314 return (1); 315 lsa_length -= sizeof (*ap); 316 TCHECK(*ap); 317 printf("\n\t\t%s", ipaddr_string(ap)); 318 ++ap; 319 } 320 break; 321 322 case LS_TYPE_INTER_AP | LS_SCOPE_AREA: 323 if (lsa_length < sizeof (lsap->lsa_un.un_inter_ap.inter_ap_metric)) 324 return (1); 325 lsa_length -= sizeof (lsap->lsa_un.un_inter_ap.inter_ap_metric); 326 TCHECK(lsap->lsa_un.un_inter_ap.inter_ap_metric); 327 printf(", metric %u", 328 EXTRACT_32BITS(&lsap->lsa_un.un_inter_ap.inter_ap_metric) & SLA_MASK_METRIC); 329 330 tptr = (u_int8_t *)lsap->lsa_un.un_inter_ap.inter_ap_prefix; 331 while (lsa_length != 0) { 332 bytelen = ospf6_print_lsaprefix(tptr, lsa_length); 333 if (bytelen < 0) 334 goto trunc; 335 lsa_length -= bytelen; 336 tptr += bytelen; 337 } 338 break; 339 340 case LS_TYPE_ASE | LS_SCOPE_AS: 341 if (lsa_length < sizeof (lsap->lsa_un.un_asla.asla_metric)) 342 return (1); 343 lsa_length -= sizeof (lsap->lsa_un.un_asla.asla_metric); 344 TCHECK(lsap->lsa_un.un_asla.asla_metric); 345 flags32 = EXTRACT_32BITS(&lsap->lsa_un.un_asla.asla_metric); 346 printf("\n\t Flags [%s]", 347 bittok2str(ospf6_asla_flag_values, "none", flags32)); 348 printf(" metric %u", 349 EXTRACT_32BITS(&lsap->lsa_un.un_asla.asla_metric) & 350 ASLA_MASK_METRIC); 351 352 tptr = (u_int8_t *)lsap->lsa_un.un_asla.asla_prefix; 353 lsapp = (struct lsa6_prefix *)tptr; 354 bytelen = ospf6_print_lsaprefix(tptr, lsa_length); 355 if (bytelen < 0) 356 goto trunc; 357 lsa_length -= bytelen; 358 tptr += bytelen; 359 360 if ((flags32 & ASLA_FLAG_FWDADDR) != 0) { 361 struct in6_addr *fwdaddr6; 362 363 fwdaddr6 = (struct in6_addr *)tptr; 364 if (lsa_length < sizeof (*fwdaddr6)) 365 return (1); 366 lsa_length -= sizeof (*fwdaddr6); 367 TCHECK(*fwdaddr6); 368 printf(" forward %s", 369 ip6addr_string(fwdaddr6)); 370 tptr += sizeof(*fwdaddr6); 371 } 372 373 if ((flags32 & ASLA_FLAG_ROUTETAG) != 0) { 374 if (lsa_length < sizeof (u_int32_t)) 375 return (1); 376 lsa_length -= sizeof (u_int32_t); 377 TCHECK(*(u_int32_t *)tptr); 378 printf(" tag %s", 379 ipaddr_string((u_int32_t *)tptr)); 380 tptr += sizeof(u_int32_t); 381 } 382 383 if (lsapp->lsa_p_metric) { 384 if (lsa_length < sizeof (u_int32_t)) 385 return (1); 386 lsa_length -= sizeof (u_int32_t); 387 TCHECK(*(u_int32_t *)tptr); 388 printf(" RefLSID: %s", 389 ipaddr_string((u_int32_t *)tptr)); 390 tptr += sizeof(u_int32_t); 391 } 392 break; 393 394 case LS_TYPE_LINK: 395 /* Link LSA */ 396 llsap = &lsap->lsa_un.un_llsa; 397 if (lsa_length < sizeof (llsap->llsa_priandopt)) 398 return (1); 399 lsa_length -= sizeof (llsap->llsa_priandopt); 400 TCHECK(llsap->llsa_priandopt); 401 printf("\n\t Options [%s]", 402 bittok2str(ospf6_option_values, "none", 403 EXTRACT_32BITS(&llsap->llsa_options))); 404 405 if (lsa_length < sizeof (llsap->llsa_lladdr) + sizeof (llsap->llsa_nprefix)) 406 return (1); 407 lsa_length -= sizeof (llsap->llsa_lladdr) + sizeof (llsap->llsa_nprefix); 408 prefixes = EXTRACT_32BITS(&llsap->llsa_nprefix); 409 printf("\n\t Priority %d, Link-local address %s, Prefixes %d:", 410 llsap->llsa_priority, 411 ip6addr_string(&llsap->llsa_lladdr), 412 prefixes); 413 414 tptr = (u_int8_t *)llsap->llsa_prefix; 415 while (prefixes > 0) { 416 bytelen = ospf6_print_lsaprefix(tptr, lsa_length); 417 if (bytelen < 0) 418 goto trunc; 419 prefixes--; 420 lsa_length -= bytelen; 421 tptr += bytelen; 422 } 423 break; 424 425 case LS_TYPE_INTRA_AP | LS_SCOPE_AREA: 426 /* Intra-Area-Prefix LSA */ 427 if (lsa_length < sizeof (lsap->lsa_un.un_intra_ap.intra_ap_rtid)) 428 return (1); 429 lsa_length -= sizeof (lsap->lsa_un.un_intra_ap.intra_ap_rtid); 430 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_rtid); 431 ospf6_print_ls_type( 432 EXTRACT_16BITS(&lsap->lsa_un.un_intra_ap.intra_ap_lstype), 433 &lsap->lsa_un.un_intra_ap.intra_ap_lsid); 434 435 if (lsa_length < sizeof (lsap->lsa_un.un_intra_ap.intra_ap_nprefix)) 436 return (1); 437 lsa_length -= sizeof (lsap->lsa_un.un_intra_ap.intra_ap_nprefix); 438 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_nprefix); 439 prefixes = EXTRACT_16BITS(&lsap->lsa_un.un_intra_ap.intra_ap_nprefix); 440 printf("\n\t Prefixes %d:", prefixes); 441 442 tptr = (u_int8_t *)lsap->lsa_un.un_intra_ap.intra_ap_prefix; 443 while (prefixes > 0) { 444 bytelen = ospf6_print_lsaprefix(tptr, lsa_length); 445 if (bytelen < 0) 446 goto trunc; 447 prefixes--; 448 lsa_length -= bytelen; 449 tptr += bytelen; 450 } 451 break; 452 453 case LS_TYPE_GRACE | LS_SCOPE_LINKLOCAL: 454 if (ospf_print_grace_lsa(tptr, lsa_length) == -1) { 455 return 1; 456 } 457 break; 458 459 case LS_TYPE_INTRA_ATE | LS_SCOPE_LINKLOCAL: 460 if (ospf_print_te_lsa(tptr, lsa_length) == -1) { 461 return 1; 462 } 463 break; 464 465 default: 466 if(!print_unknown_data(tptr, 467 "\n\t ", 468 lsa_length)) { 469 return (1); 470 } 471 break; 472 } 473 474 return (0); 475 trunc: 476 return (1); 477 } 478 479 static int 480 ospf6_decode_v3(register const struct ospf6hdr *op, 481 register const u_char *dataend) 482 { 483 register const rtrid_t *ap; 484 register const struct lsr6 *lsrp; 485 register const struct lsa6_hdr *lshp; 486 register const struct lsa6 *lsap; 487 register int i; 488 489 switch (op->ospf6_type) { 490 491 case OSPF_TYPE_HELLO: 492 printf("\n\tOptions [%s]", 493 bittok2str(ospf6_option_values, "none", 494 EXTRACT_32BITS(&op->ospf6_hello.hello_options))); 495 496 TCHECK(op->ospf6_hello.hello_deadint); 497 printf("\n\t Hello Timer %us, Dead Timer %us, Interface-ID %s, Priority %u", 498 EXTRACT_16BITS(&op->ospf6_hello.hello_helloint), 499 EXTRACT_16BITS(&op->ospf6_hello.hello_deadint), 500 ipaddr_string(&op->ospf6_hello.hello_ifid), 501 op->ospf6_hello.hello_priority); 502 503 TCHECK(op->ospf6_hello.hello_dr); 504 if (op->ospf6_hello.hello_dr != 0) 505 printf("\n\t Designated Router %s", 506 ipaddr_string(&op->ospf6_hello.hello_dr)); 507 TCHECK(op->ospf6_hello.hello_bdr); 508 if (op->ospf6_hello.hello_bdr != 0) 509 printf(", Backup Designated Router %s", 510 ipaddr_string(&op->ospf6_hello.hello_bdr)); 511 if (vflag) { 512 printf("\n\t Neighbor List:"); 513 ap = op->ospf6_hello.hello_neighbor; 514 while ((u_char *)ap < dataend) { 515 TCHECK(*ap); 516 printf("\n\t %s", ipaddr_string(ap)); 517 ++ap; 518 } 519 } 520 break; /* HELLO */ 521 522 case OSPF_TYPE_DD: 523 TCHECK(op->ospf6_db.db_options); 524 printf("\n\tOptions [%s]", 525 bittok2str(ospf6_option_values, "none", 526 EXTRACT_32BITS(&op->ospf6_db.db_options))); 527 TCHECK(op->ospf6_db.db_flags); 528 printf(", DD Flags [%s]", 529 bittok2str(ospf6_dd_flag_values,"none",op->ospf6_db.db_flags)); 530 531 TCHECK(op->ospf6_db.db_seq); 532 printf(", MTU %u, DD-Sequence 0x%08x", 533 EXTRACT_16BITS(&op->ospf6_db.db_mtu), 534 EXTRACT_32BITS(&op->ospf6_db.db_seq)); 535 536 /* Print all the LS adv's */ 537 lshp = op->ospf6_db.db_lshdr; 538 while (!ospf6_print_lshdr(lshp)) { 539 ++lshp; 540 } 541 break; 542 543 case OSPF_TYPE_LS_REQ: 544 if (vflag) { 545 lsrp = op->ospf6_lsr; 546 while ((u_char *)lsrp < dataend) { 547 TCHECK(*lsrp); 548 printf("\n\t Advertising Router %s", 549 ipaddr_string(&lsrp->ls_router)); 550 ospf6_print_ls_type(EXTRACT_16BITS(&lsrp->ls_type), 551 &lsrp->ls_stateid); 552 ++lsrp; 553 } 554 } 555 break; 556 557 case OSPF_TYPE_LS_UPDATE: 558 if (vflag) { 559 lsap = op->ospf6_lsu.lsu_lsa; 560 TCHECK(op->ospf6_lsu.lsu_count); 561 i = EXTRACT_32BITS(&op->ospf6_lsu.lsu_count); 562 while (i--) { 563 if (ospf6_print_lsa(lsap)) 564 goto trunc; 565 lsap = (struct lsa6 *)((u_char *)lsap + 566 EXTRACT_16BITS(&lsap->ls_hdr.ls_length)); 567 } 568 } 569 break; 570 571 572 case OSPF_TYPE_LS_ACK: 573 if (vflag) { 574 lshp = op->ospf6_lsa.lsa_lshdr; 575 576 while (!ospf6_print_lshdr(lshp)) { 577 ++lshp; 578 } 579 } 580 break; 581 582 default: 583 break; 584 } 585 return (0); 586 trunc: 587 return (1); 588 } 589 590 void 591 ospf6_print(register const u_char *bp, register u_int length) 592 { 593 register const struct ospf6hdr *op; 594 register const u_char *dataend; 595 register const char *cp; 596 597 op = (struct ospf6hdr *)bp; 598 599 /* If the type is valid translate it, or just print the type */ 600 /* value. If it's not valid, say so and return */ 601 TCHECK(op->ospf6_type); 602 cp = tok2str(ospf6_type_values, "unknown LS-type", op->ospf6_type); 603 printf("OSPFv%u, %s, length %d", op->ospf6_version, cp, length); 604 if (*cp == 'u') { 605 return; 606 } 607 608 if(!vflag) { /* non verbose - so lets bail out here */ 609 return; 610 } 611 612 TCHECK(op->ospf6_len); 613 if (length != EXTRACT_16BITS(&op->ospf6_len)) { 614 printf(" [len %d]", EXTRACT_16BITS(&op->ospf6_len)); 615 return; 616 } 617 dataend = bp + length; 618 619 /* Print the routerid if it is not the same as the source */ 620 TCHECK(op->ospf6_routerid); 621 printf("\n\tRouter-ID %s", ipaddr_string(&op->ospf6_routerid)); 622 623 TCHECK(op->ospf6_areaid); 624 if (op->ospf6_areaid != 0) 625 printf(", Area %s", ipaddr_string(&op->ospf6_areaid)); 626 else 627 printf(", Backbone Area"); 628 TCHECK(op->ospf6_instanceid); 629 if (op->ospf6_instanceid) 630 printf(", Instance %u", op->ospf6_instanceid); 631 632 /* Do rest according to version. */ 633 switch (op->ospf6_version) { 634 635 case 3: 636 /* ospf version 3 */ 637 if (ospf6_decode_v3(op, dataend)) 638 goto trunc; 639 break; 640 641 default: 642 printf(" ospf [version %d]", op->ospf6_version); 643 break; 644 } /* end switch on version */ 645 646 return; 647 trunc: 648 fputs(tstr, stdout); 649 } 650
Indexes created Sat Mar 14 00:24:00 UTC 2026