contrib/tcpdump-3.8.3/print-ospf.c

   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
  25 static const char rcsid[] _U_ =
  26     "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.45.2.4 2004/03/24 02:44:30 guy 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
  46 static 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         { 0,                    NULL }
  55 };
  56
  57 static struct tok ospf_authtype_values[] = {
  58         { OSPF_AUTH_NONE,       "none" },
  59         { OSPF_AUTH_NONE,       "simple" },
  60         { OSPF_AUTH_MD5,        "MD5" },
  61         { 0,                    NULL }
  62 };
  63
  64 static struct tok ospf_rla_flag_values[] = {
  65         { RLA_FLAG_B,           "ABR" },
  66         { RLA_FLAG_E,           "ASBR" },
  67         { RLA_FLAG_W1,          "Virtual" },
  68         { RLA_FLAG_W2,          "W2" },
  69         { 0,                    NULL }
  70 };
  71
  72 static struct tok type2str[] = {
  73         { OSPF_TYPE_UMD,        "UMD" },
  74         { OSPF_TYPE_HELLO,      "Hello" },
  75         { OSPF_TYPE_DD,         "Database Description" },
  76         { OSPF_TYPE_LS_REQ,     "LS-Request" },
  77         { OSPF_TYPE_LS_UPDATE,  "LS-Update" },
  78         { OSPF_TYPE_LS_ACK,     "LS-Ack" },
  79         { 0,                    NULL }
  80 };
  81
  82 static struct tok lsa_values[] = {
  83         { LS_TYPE_ROUTER,       "Router" },
  84         { LS_TYPE_NETWORK,      "Network" },
  85         { LS_TYPE_SUM_IP,       "Summary" },
  86         { LS_TYPE_SUM_ABR,      "ASBR Summary" },
  87         { LS_TYPE_ASE,          "External" },
  88         { LS_TYPE_GROUP,        "Multicast Group" },
  89         { LS_TYPE_NSSA,         "NSSA" },
  90         { LS_TYPE_OPAQUE_LL,    "Link Local Opaque" },
  91         { LS_TYPE_OPAQUE_AL,    "Area Local Opaque" },
  92         { LS_TYPE_OPAQUE_DW,    "Domain Wide Opaque" },
  93         { 0,                    NULL }
  94 };
  95
  96 static struct tok ospf_dd_flag_values[] = {
  97         { OSPF_DB_INIT,         "Init" },
  98         { OSPF_DB_MORE,         "More" },
  99         { OSPF_DB_MASTER,       "Master" },
 100         { 0,                    NULL }
 101 };
 102
 103 static struct tok lsa_opaque_values[] = {
 104         { LS_OPAQUE_TYPE_TE,    "Traffic Engineering" },
 105         { LS_OPAQUE_TYPE_GRACE, "Graceful restart" },
 106         { 0,                    NULL }
 107 };
 108
 109 static struct tok lsa_opaque_te_tlv_values[] = {
 110         { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" },
 111         { LS_OPAQUE_TE_TLV_LINK,   "Link" },
 112         { 0,                    NULL }
 113 };
 114
 115 static struct tok lsa_opaque_te_link_tlv_subtlv_values[] = {
 116         { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE,            "Link Type" },
 117         { LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID,              "Link ID" },
 118         { LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP,             "Local Interface IP address" },
 119         { LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP,            "Remote Interface IP address" },
 120         { LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC,            "Traffic Engineering Metric" },
 121         { LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW,               "Maximum Bandwidth" },
 122         { LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW,           "Maximum Reservable Bandwidth" },
 123         { LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW,             "Unreserved Bandwidth" },
 124         { LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP,          "Administrative Group" },
 125         { LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
 126         { LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" },
 127         { LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR,    "Interface Switching Capability" },
 128         { LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP,    "Shared Risk Link Group" },
 129         { 0,                    NULL }
 130 };
 131
 132 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP        1  /* rfc3630 */
 133 #define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA         2  /* rfc3630 */
 134
 135 static struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = {
 136         { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" },
 137         { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA,  "Multi-Access" },
 138         { 0,                    NULL }
 139 };
 140
 141 static char tstr[] = " [|ospf]";
 142
 143 #ifdef WIN32
 144 #define inline __inline
 145 #endif /* WIN32 */
 146
 147 static int ospf_print_lshdr(const struct lsa_hdr *);
 148 static const u_char *ospf_print_lsa(const struct lsa *);
 149 static int ospf_decode_v2(const struct ospfhdr *, const u_char *);
 150
 151 static int
 152 ospf_print_lshdr(register const struct lsa_hdr *lshp)
 153 {
 154         u_int ls_length;
 155
 156         TCHECK(lshp->ls_length);
 157         ls_length = EXTRACT_16BITS(&lshp->ls_length);
 158         if (ls_length < sizeof(struct lsa_hdr)) {
 159                 printf("\n\t    Bogus length %u < %lu", ls_length,
 160                     (unsigned long)sizeof(struct lsa_hdr));
 161                 return(-1);
 162         }
 163
 164         TCHECK(lshp->ls_seq);   /* XXX - ls_length check checked this */
 165         printf("\n\t  Advertising Router: %s, seq 0x%08x, age %us, length: %u",
 166                ipaddr_string(&lshp->ls_router),
 167                EXTRACT_32BITS(&lshp->ls_seq),
 168                EXTRACT_16BITS(&lshp->ls_age),
 169                ls_length-(u_int)sizeof(struct lsa_hdr));
 170
 171         TCHECK(lshp->ls_type);  /* XXX - ls_length check checked this */
 172         switch (lshp->ls_type) {
 173         /* the LSA header for opaque LSAs was slightly changed */
 174         case LS_TYPE_OPAQUE_LL:
 175         case LS_TYPE_OPAQUE_AL:
 176         case LS_TYPE_OPAQUE_DW:
 177             printf("\n\t    %s LSA (%d), Opaque-Type: %s LSA (%u), Opaque-ID: %u",
 178                    tok2str(lsa_values,"unknown",lshp->ls_type),
 179                    lshp->ls_type,
 180
 181                    tok2str(lsa_opaque_values,
 182                            "unknown",
 183                            *(&lshp->un_lsa_id.opaque_field.opaque_type)),
 184                    *(&lshp->un_lsa_id.opaque_field.opaque_type),
 185                    EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id)
 186
 187                    );
 188             break;
 189
 190         /* all other LSA types use regular style LSA headers */
 191         default:
 192             printf("\n\t    %s LSA (%d), LSA-ID: %s",
 193                    tok2str(lsa_values,"unknown",lshp->ls_type),
 194                    lshp->ls_type,
 195                    ipaddr_string(&lshp->un_lsa_id.lsa_id));
 196             break;
 197         }
 198
 199         TCHECK(lshp->ls_options);       /* XXX - ls_length check checked this */
 200         printf("\n\t    Options: [%s]", bittok2str(ospf_option_values,"none",lshp->ls_options));
 201
 202         return (ls_length);
 203 trunc:
 204         return (-1);
 205 }
 206
 207 /*
 208  * Print a single link state advertisement.  If truncated or if LSA length
 209  * field is less than the length of the LSA header, return NULl, else
 210  * return pointer to data past end of LSA.
 211  */
 212 static const u_int8_t *
 213 ospf_print_lsa(register const struct lsa *lsap)
 214 {
 215         register const u_int8_t *ls_end;
 216         register const struct rlalink *rlp;
 217         register const struct tos_metric *tosp;
 218         register const struct in_addr *ap;
 219         register const struct aslametric *almp;
 220         register const struct mcla *mcp;
 221         register const u_int32_t *lp;
 222         register int j, k, tlv_type, tlv_length, subtlv_type, subtlv_length, priority_level;
 223         register int ls_length;
 224         const u_int8_t *tptr;
 225         int count_srlg;
 226         union { /* int to float conversion buffer for several subTLVs */
 227             float f;
 228             u_int32_t i;
 229         } bw;
 230
 231         tptr = (u_int8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */
 232         ls_length = ospf_print_lshdr(&lsap->ls_hdr);
 233         if (ls_length == -1)
 234                 return(NULL);
 235         ls_end = (u_int8_t *)lsap + ls_length;
 236         ls_length -= sizeof(struct lsa_hdr);
 237
 238         switch (lsap->ls_hdr.ls_type) {
 239
 240         case LS_TYPE_ROUTER:
 241                 TCHECK(lsap->lsa_un.un_rla.rla_flags);
 242                 printf("\n\t    Router LSA Options: [%s]", bittok2str(ospf_rla_flag_values,"none",lsap->lsa_un.un_rla.rla_flags));
 243
 244                 TCHECK(lsap->lsa_un.un_rla.rla_count);
 245                 j = EXTRACT_16BITS(&lsap->lsa_un.un_rla.rla_count);
 246                 TCHECK(lsap->lsa_un.un_rla.rla_link);
 247                 rlp = lsap->lsa_un.un_rla.rla_link;
 248                 while (j--) {
 249                         TCHECK(*rlp);
 250                         switch (rlp->link_type) {
 251
 252                         case RLA_TYPE_VIRTUAL:
 253                                 printf("\n\t      Virtual Link: Neighbor Router-ID: %s, Interface Address: %s",
 254                                     ipaddr_string(&rlp->link_id),
 255                                     ipaddr_string(&rlp->link_data));
 256                                 break;
 257
 258                         case RLA_TYPE_ROUTER:
 259                                 printf("\n\t      Neighbor Router-ID: %s, Interface Address: %s",
 260                                     ipaddr_string(&rlp->link_id),
 261                                     ipaddr_string(&rlp->link_data));
 262                                 break;
 263
 264                         case RLA_TYPE_TRANSIT:
 265                                 printf("\n\t      Neighbor Network-ID: %s, Interface Address: %s",
 266                                     ipaddr_string(&rlp->link_id),
 267                                     ipaddr_string(&rlp->link_data));
 268                                 break;
 269
 270                         case RLA_TYPE_STUB:
 271                                 printf("\n\t      Stub Network: %s, Mask: %s",
 272                                     ipaddr_string(&rlp->link_id),
 273                                     ipaddr_string(&rlp->link_data));
 274                                 break;
 275
 276                         default:
 277                                 printf("\n\t      Unknown Router Link Type (%u)",
 278                                     rlp->link_type);
 279                                 return (ls_end);
 280                         }
 281                         printf(", tos 0, metric: %d", EXTRACT_16BITS(&rlp->link_tos0metric));
 282                         tosp = (struct tos_metric *)
 283                             ((sizeof rlp->link_tos0metric) + (u_char *) rlp);
 284                         for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) {
 285                                 TCHECK(*tosp);
 286                                 printf(", tos %d, metric: %d",
 287                                     tosp->tos_type,
 288                                     EXTRACT_16BITS(&tosp->tos_metric));
 289                         }
 290                         rlp = (struct rlalink *)((u_char *)(rlp + 1) +
 291                             ((rlp->link_toscount) * sizeof(*tosp)));
 292                 }
 293                 break;
 294
 295         case LS_TYPE_NETWORK:
 296                 TCHECK(lsap->lsa_un.un_nla.nla_mask);
 297                 printf("\n\t    Mask %s\n\t    Connected Routers:",
 298                     ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
 299                 ap = lsap->lsa_un.un_nla.nla_router;
 300                 while ((u_char *)ap < ls_end) {
 301                         TCHECK(*ap);
 302                         printf("\n\t      %s", ipaddr_string(ap));
 303                         ++ap;
 304                 }
 305                 break;
 306
 307         case LS_TYPE_SUM_IP:
 308                 TCHECK(lsap->lsa_un.un_nla.nla_mask);
 309                 printf("\n\t    Mask %s",
 310                     ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
 311                 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
 312                 lp = lsap->lsa_un.un_sla.sla_tosmetric;
 313                 /* suppress tos if its not supported */
 314                 if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
 315                     printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
 316                     break;
 317                 }
 318                 while ((u_char *)lp < ls_end) {
 319                         register u_int32_t ul;
 320
 321                         TCHECK(*lp);
 322                         ul = EXTRACT_32BITS(lp);
 323                         printf(", tos %d metric %d",
 324                             (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
 325                             ul & SLA_MASK_METRIC);
 326                         ++lp;
 327                 }
 328                 break;
 329
 330         case LS_TYPE_SUM_ABR:
 331                 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
 332                 lp = lsap->lsa_un.un_sla.sla_tosmetric;
 333                 /* suppress tos if its not supported */
 334                 if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
 335                     printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
 336                     break;
 337                 }
 338                 while ((u_char *)lp < ls_end) {
 339                         register u_int32_t ul;
 340
 341                         TCHECK(*lp);
 342                         ul = EXTRACT_32BITS(lp);
 343                         printf(", tos %d metric %d",
 344                             (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
 345                             ul & SLA_MASK_METRIC);
 346                         ++lp;
 347                 }
 348                 break;
 349
 350         case LS_TYPE_ASE:
 351                 TCHECK(lsap->lsa_un.un_nla.nla_mask);
 352                 printf("\n\t    Mask %s",
 353                     ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
 354
 355                 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
 356                 almp = lsap->lsa_un.un_asla.asla_metric;
 357                 while ((u_char *)almp < ls_end) {
 358                         register u_int32_t ul;
 359
 360                         TCHECK(almp->asla_tosmetric);
 361                         ul = EXTRACT_32BITS(&almp->asla_tosmetric);
 362                         printf(", type %d, tos %d metric:",
 363                             (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
 364                             (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS);
 365                         if ((ul & ASLA_MASK_METRIC)==0xffffff)
 366                             printf(" infinite");
 367                         else
 368                             printf(" %d", (ul & ASLA_MASK_METRIC));
 369
 370                         TCHECK(almp->asla_forward);
 371                         if (almp->asla_forward.s_addr) {
 372                                 printf(", forward %s",
 373                                     ipaddr_string(&almp->asla_forward));
 374                         }
 375                         TCHECK(almp->asla_tag);
 376                         if (almp->asla_tag.s_addr) {
 377                                 printf(", tag %s",
 378                                     ipaddr_string(&almp->asla_tag));
 379                         }
 380                         ++almp;
 381                 }
 382                 break;
 383
 384         case LS_TYPE_GROUP:
 385                 /* Multicast extensions as of 23 July 1991 */
 386                 mcp = lsap->lsa_un.un_mcla;
 387                 while ((u_char *)mcp < ls_end) {
 388                         TCHECK(mcp->mcla_vid);
 389                         switch (EXTRACT_32BITS(&mcp->mcla_vtype)) {
 390
 391                         case MCLA_VERTEX_ROUTER:
 392                                 printf("\n\t    Router Router-ID %s",
 393                                     ipaddr_string(&mcp->mcla_vid));
 394                                 break;
 395
 396                         case MCLA_VERTEX_NETWORK:
 397                                 printf("\n\t    Network Designated Router %s",
 398                                     ipaddr_string(&mcp->mcla_vid));
 399                                 break;
 400
 401                         default:
 402                                 printf("\n\t    unknown VertexType (%u)",
 403                                     EXTRACT_32BITS(&mcp->mcla_vtype));
 404                                 break;
 405                         }
 406                 ++mcp;
 407                 }
 408                 break;
 409
 410         case LS_TYPE_OPAQUE_LL: /* fall through */
 411         case LS_TYPE_OPAQUE_AL:
 412         case LS_TYPE_OPAQUE_DW:
 413
 414             switch (*(&lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) {
 415             case LS_OPAQUE_TYPE_TE:
 416                 tptr = (u_int8_t *)(&lsap->lsa_un.un_te_lsa_tlv.type);
 417
 418                 while (ls_length != 0) {
 419                     TCHECK2(*tptr, 4);
 420                     if (ls_length < 4) {
 421                         printf("\n\t    Remaining LS length %u < 4", ls_length);
 422                         return(ls_end);
 423                     }
 424                     tlv_type = EXTRACT_16BITS(tptr);
 425                     tlv_length = EXTRACT_16BITS(tptr+2);
 426                     tptr+=4;
 427                     ls_length-=4;
 428
 429                     printf("\n\t    %s TLV (%u), length: %u",
 430                            tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type),
 431                            tlv_type,
 432                            tlv_length);
 433
 434                     if (tlv_length > ls_length) {
 435                         printf("\n\t    Bogus length %u > %u", tlv_length,
 436                             ls_length);
 437                         return(ls_end);
 438                     }
 439                     ls_length-=tlv_length;
 440                     switch(tlv_type) {
 441                     case LS_OPAQUE_TE_TLV_LINK:
 442                         while (tlv_length != 0) {
 443                             if (tlv_length < 4) {
 444                                 printf("\n\t    Remaining TLV length %u < 4",
 445                                     tlv_length);
 446                                 return(ls_end);
 447                             }
 448                             TCHECK2(*tptr, 4);
 449                             subtlv_type = EXTRACT_16BITS(tptr);
 450                             subtlv_length = EXTRACT_16BITS(tptr+2);
 451                             tptr+=4;
 452                             tlv_length-=4;
 453
 454                             printf("\n\t      %s subTLV (%u), length: %u",
 455                                    tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type),
 456                                    subtlv_type,
 457                                    subtlv_length);
 458
 459                             TCHECK2(*tptr, subtlv_length);
 460                             switch(subtlv_type) {
 461                             case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP:
 462                                 printf(", 0x%08x", EXTRACT_32BITS(tptr));
 463                                 break;
 464                             case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID:
 465                             case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID:
 466                                 printf(", %s (0x%08x)",
 467                                        ipaddr_string(tptr),
 468                                        EXTRACT_32BITS(tptr));
 469                                 if (subtlv_length == 8) /* draft-ietf-ccamp-ospf-gmpls-extensions */
 470                                     printf(", %s (0x%08x)",
 471                                            ipaddr_string(tptr+4),
 472                                            EXTRACT_32BITS(tptr+4));
 473                                 break;
 474                             case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP:
 475                             case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP:
 476                                 printf(", %s", ipaddr_string(tptr));
 477                                 break;
 478                             case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW:
 479                             case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW:
 480                                 bw.i = EXTRACT_32BITS(tptr);
 481                                 printf(", %.3f Mbps", bw.f*8/1000000 );
 482                                 break;
 483                             case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW:
 484                                 for (priority_level = 0; priority_level < 8; priority_level++) {
 485                                     bw.i = EXTRACT_32BITS(tptr+priority_level*4);
 486                                     printf("\n\t\tpriority level %d: %.3f Mbps",
 487                                            priority_level,
 488                                            bw.f*8/1000000 );
 489                                 }
 490                                 break;
 491                             case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC:
 492                                 printf(", Metric %u", EXTRACT_32BITS(tptr));
 493                                 break;
 494                             case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE:
 495                                 printf(", %s, Priority %u",
 496                                        bittok2str(gmpls_link_prot_values, "none", *tptr),
 497                                        *(tptr+1));
 498                                 break;
 499                             case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR:
 500                                 printf("\n\t\tInterface Switching Capability: %s",
 501                                        tok2str(gmpls_switch_cap_values, "Unknown", *(tptr)));
 502                                 printf("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:",
 503                                        tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
 504                                 for (priority_level = 0; priority_level < 8; priority_level++) {
 505                                     bw.i = EXTRACT_32BITS(tptr+4+(priority_level*4));
 506                                     printf("\n\t\t  priority level %d: %.3f Mbps",
 507                                            priority_level,
 508                                            bw.f*8/1000000 );
 509                                 }
 510                                 break;
 511                             case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE:
 512                                 printf(", %s (%u)",
 513                                        tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",*tptr),
 514                                        *tptr);
 515                                 break;
 516
 517                             case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP:
 518                                 count_srlg = subtlv_length / 4;
 519                                 if (count_srlg != 0)
 520                                      printf("\n\t\t  Shared risk group: ");
 521                                 while (count_srlg > 0) {
 522                                         bw.i = EXTRACT_32BITS(tptr);
 523                                         printf("%d",bw.i);
 524                                         tptr+=4;
 525                                         count_srlg--;
 526                                         if (count_srlg > 0)
 527                                             printf(", ");
 528                                 }
 529                                 break;
 530
 531                             default:
 532                                 if (vflag <= 1) {
 533                                     if(!print_unknown_data(tptr,"\n\t\t",subtlv_length))
 534                                         return(ls_end);
 535                                 }
 536                                 break;
 537                             }
 538                             /* in OSPF everything has to be 32-bit aligned, including TLVs */
 539                             if (subtlv_length%4 != 0)
 540                                 subtlv_length+=4-(subtlv_length%4);
 541
 542                             tlv_length-=subtlv_length;
 543                             tptr+=subtlv_length;
 544
 545                         }
 546                         break;
 547
 548                     case LS_OPAQUE_TE_TLV_ROUTER:
 549                         if (tlv_length < 4) {
 550                             printf("\n\t    TLV length %u < 4", tlv_length);
 551                             return(ls_end);
 552                         }
 553                         TCHECK2(*tptr, 4);
 554                         printf(", %s", ipaddr_string(tptr));
 555                         break;
 556
 557                     default:
 558                         if (vflag <= 1) {
 559                             if(!print_unknown_data(tptr,"\n\t      ",tlv_length))
 560                                 return(ls_end);
 561                         }
 562                         break;
 563                     }
 564                     tptr+=tlv_length;
 565                 }
 566                 break;
 567             }
 568             break;
 569         default:
 570             if (vflag <= 1) {
 571                 if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown,
 572                                        "\n\t    ", ls_length))
 573                     return(ls_end);
 574             }
 575             break;
 576         }
 577
 578         /* do we want to see an additionally hexdump ? */
 579         if (vflag> 1)
 580             if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown,
 581                                    "\n\t    ", ls_length)) {
 582                 return(ls_end);
 583             }
 584
 585         return (ls_end);
 586 trunc:
 587         return (NULL);
 588 }
 589
 590 static int
 591 ospf_decode_v2(register const struct ospfhdr *op,
 592     register const u_char *dataend)
 593 {
 594         register const struct in_addr *ap;
 595         register const struct lsr *lsrp;
 596         register const struct lsa_hdr *lshp;
 597         register const struct lsa *lsap;
 598         register u_int32_t lsa_count,lsa_count_max;
 599
 600         switch (op->ospf_type) {
 601
 602         case OSPF_TYPE_UMD:
 603                 /*
 604                  * Rob Coltun's special monitoring packets;
 605                  * do nothing
 606                  */
 607                 break;
 608
 609         case OSPF_TYPE_HELLO:
 610                 printf("\n\tOptions: [%s]",
 611                        bittok2str(ospf_option_values,"none",op->ospf_hello.hello_options));
 612
 613                 TCHECK(op->ospf_hello.hello_deadint);
 614                 printf("\n\t  Hello Timer: %us, Dead Timer %us, Mask: %s, Priority: %u",
 615                        EXTRACT_16BITS(&op->ospf_hello.hello_helloint),
 616                        EXTRACT_32BITS(&op->ospf_hello.hello_deadint),
 617                        ipaddr_string(&op->ospf_hello.hello_mask),
 618                        op->ospf_hello.hello_priority);
 619
 620                 TCHECK(op->ospf_hello.hello_dr);
 621                 if (op->ospf_hello.hello_dr.s_addr != 0)
 622                         printf("\n\t  Designated Router %s",
 623                             ipaddr_string(&op->ospf_hello.hello_dr));
 624
 625                 TCHECK(op->ospf_hello.hello_bdr);
 626                 if (op->ospf_hello.hello_bdr.s_addr != 0)
 627                         printf(", Backup Designated Router %s",
 628                             ipaddr_string(&op->ospf_hello.hello_bdr));
 629
 630                 ap = op->ospf_hello.hello_neighbor;
 631                 if ((u_char *)ap < dataend)
 632                         printf("\n\t  Neighbor List:");
 633                 while ((u_char *)ap < dataend) {
 634                         TCHECK(*ap);
 635                         printf("\n\t    %s", ipaddr_string(ap));
 636                         ++ap;
 637                 }
 638                 break;  /* HELLO */
 639
 640         case OSPF_TYPE_DD:
 641                 TCHECK(op->ospf_db.db_options);
 642                 printf("\n\tOptions: [%s]",
 643                        bittok2str(ospf_option_values,"none",op->ospf_db.db_options));
 644                 TCHECK(op->ospf_db.db_flags);
 645                 printf(", DD Flags: [%s]",
 646                        bittok2str(ospf_dd_flag_values,"none",op->ospf_db.db_flags));
 647
 648                 if (vflag) {
 649                         /* Print all the LS adv's */
 650                         lshp = op->ospf_db.db_lshdr;
 651                         while (ospf_print_lshdr(lshp) != -1) {
 652                                 ++lshp;
 653                         }
 654                 }
 655                 break;
 656
 657         case OSPF_TYPE_LS_REQ:
 658                 lsrp = op->ospf_lsr;
 659                 while ((u_char *)lsrp < dataend) {
 660                     TCHECK(*lsrp);
 661
 662                     printf("\n\t  Advertising Router: %s, %s LSA (%u)",
 663                            ipaddr_string(&lsrp->ls_router),
 664                            tok2str(lsa_values,"unknown",EXTRACT_32BITS(lsrp->ls_type)),
 665                            EXTRACT_32BITS(&lsrp->ls_type));
 666
 667                     switch (EXTRACT_32BITS(lsrp->ls_type)) {
 668                         /* the LSA header for opaque LSAs was slightly changed */
 669                     case LS_TYPE_OPAQUE_LL:
 670                     case LS_TYPE_OPAQUE_AL:
 671                     case LS_TYPE_OPAQUE_DW:
 672                         printf(", Opaque-Type: %s LSA (%u), Opaque-ID: %u",
 673                                tok2str(lsa_opaque_values, "unknown",lsrp->un_ls_stateid.opaque_field.opaque_type),
 674                                lsrp->un_ls_stateid.opaque_field.opaque_type,
 675                                EXTRACT_24BITS(&lsrp->un_ls_stateid.opaque_field.opaque_id));
 676                         break;
 677                     default:
 678                         printf(", LSA-ID: %s",
 679                                ipaddr_string(&lsrp->un_ls_stateid.ls_stateid));
 680                         break;
 681                     }
 682
 683                     ++lsrp;
 684                 }
 685                 break;
 686
 687         case OSPF_TYPE_LS_UPDATE:
 688                 lsap = op->ospf_lsu.lsu_lsa;
 689                 TCHECK(op->ospf_lsu.lsu_count);
 690                 lsa_count_max = EXTRACT_32BITS(&op->ospf_lsu.lsu_count);
 691                 printf(", %d LSA%s",lsa_count_max, lsa_count_max > 1 ? "s" : "");
 692                 for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) {
 693                     printf("\n\t  LSA #%u",lsa_count);
 694                         lsap = (const struct lsa *)ospf_print_lsa(lsap);
 695                         if (lsap == NULL)
 696                                 goto trunc;
 697                 }
 698                 break;
 699
 700         case OSPF_TYPE_LS_ACK:
 701                 lshp = op->ospf_lsa.lsa_lshdr;
 702                 while (ospf_print_lshdr(lshp) != -1) {
 703                     ++lshp;
 704                 }
 705                 break;
 706
 707         default:
 708                 printf("v2 type (%d)", op->ospf_type);
 709                 break;
 710         }
 711         return (0);
 712 trunc:
 713         return (1);
 714 }
 715
 716 void
 717 ospf_print(register const u_char *bp, register u_int length,
 718     register const u_char *bp2)
 719 {
 720         register const struct ospfhdr *op;
 721         register const struct ip *ip;
 722         register const u_char *dataend;
 723         register const char *cp;
 724
 725         op = (struct ospfhdr *)bp;
 726         ip = (struct ip *)bp2;
 727
 728         /* XXX Before we do anything else, strip off the MD5 trailer */
 729         TCHECK(op->ospf_authtype);
 730         if (EXTRACT_16BITS(&op->ospf_authtype) == OSPF_AUTH_MD5) {
 731                 length -= OSPF_AUTH_MD5_LEN;
 732                 snapend -= OSPF_AUTH_MD5_LEN;
 733         }
 734
 735         /* If the type is valid translate it, or just print the type */
 736         /* value.  If it's not valid, say so and return */
 737         TCHECK(op->ospf_type);
 738         cp = tok2str(type2str, "unknown LS-type", op->ospf_type);
 739         printf("OSPFv%u, %s (%u), length: %u",
 740                op->ospf_version,
 741                cp,
 742                op->ospf_type,
 743                length);
 744         if (*cp == 'u')
 745                 return;
 746
 747         if(!vflag) /* non verbose - so lets bail out here */
 748                 return;
 749
 750         TCHECK(op->ospf_len);
 751         if (length != EXTRACT_16BITS(&op->ospf_len)) {
 752                 printf(" [len %d]", EXTRACT_16BITS(&op->ospf_len));
 753                 return;
 754         }
 755         dataend = bp + length;
 756
 757         TCHECK(op->ospf_routerid);
 758         printf("\n\tRouter-ID: %s", ipaddr_string(&op->ospf_routerid));
 759
 760         TCHECK(op->ospf_areaid);
 761         if (op->ospf_areaid.s_addr != 0)
 762                 printf(", Area %s", ipaddr_string(&op->ospf_areaid));
 763         else
 764                 printf(", Backbone Area");
 765
 766         if (vflag) {
 767                 /* Print authentication data (should we really do this?) */
 768                 TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata));
 769
 770                 printf(", Authentication Type: %s (%u)",
 771                        tok2str(ospf_authtype_values,"unknown",EXTRACT_16BITS(&op->ospf_authtype)),
 772                        EXTRACT_16BITS(&op->ospf_authtype));
 773
 774                 switch (EXTRACT_16BITS(&op->ospf_authtype)) {
 775
 776                 case OSPF_AUTH_NONE:
 777                         break;
 778
 779                 case OSPF_AUTH_SIMPLE:
 780                         (void)fn_printn(op->ospf_authdata,
 781                             sizeof(op->ospf_authdata), NULL);
 782                         printf("\"");
 783                         break;
 784
 785                 case OSPF_AUTH_MD5:
 786                         printf("\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x",
 787                                *((op->ospf_authdata)+2),
 788                                *((op->ospf_authdata)+3),
 789                                EXTRACT_32BITS((op->ospf_authdata)+4));
 790                         break;
 791
 792                 default:
 793                         return;
 794                 }
 795         }
 796         /* Do rest according to version.         */
 797         switch (op->ospf_version) {
 798
 799         case 2:
 800                 /* ospf version 2 */
 801                 if (ospf_decode_v2(op, dataend))
 802                         goto trunc;
 803                 break;
 804
 805         default:
 806                 printf(" ospf [version %d]", op->ospf_version);
 807                 break;
 808         }                       /* end switch on version */
 809
 810         return;
 811 trunc:
 812         fputs(tstr, stdout);
 813 }