print-ospf.c revision 147899
1121663Sharti/* 2121663Sharti * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997 3121663Sharti * The Regents of the University of California. All rights reserved. 4121663Sharti * 5121663Sharti * Redistribution and use in source and binary forms, with or without 6131823Sharti * modification, are permitted provided that: (1) source code distributions 7131823Sharti * retain the above copyright notice and this paragraph in its entirety, (2) 8121663Sharti * distributions including binary code include the above copyright notice and 9121663Sharti * this paragraph in its entirety in the documentation or other materials 10121663Sharti * provided with the distribution, and (3) all advertising materials mentioning 11121663Sharti * features or use of this software display the following acknowledgement: 12121663Sharti * ``This product includes software developed by the University of California, 13121663Sharti * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14121663Sharti * the University nor the names of its contributors may be used to endorse 15121663Sharti * or promote products derived from this software without specific prior 16121663Sharti * written permission. 17121663Sharti * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18121663Sharti * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19121663Sharti * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20121663Sharti * 21121663Sharti * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) 22121663Sharti */ 23121663Sharti 24121663Sharti#ifndef lint 25121663Shartistatic const char rcsid[] _U_ = 26121663Sharti "@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.56.2.2 2005/05/06 07:57:19 guy Exp $ (LBL)"; 27121663Sharti#endif 28121663Sharti 29131823Sharti#ifdef HAVE_CONFIG_H 30121663Sharti#include "config.h" 31121663Sharti#endif 32121663Sharti 33121663Sharti#include <tcpdump-stdinc.h> 34121663Sharti 35121663Sharti#include <stdio.h> 36121663Sharti 37121663Sharti#include "interface.h" 38121663Sharti#include "addrtoname.h" 39121663Sharti#include "extract.h" 40121663Sharti#include "gmpls.h" 41121663Sharti 42121663Sharti#include "ospf.h" 43121663Sharti 44121663Sharti#include "ip.h" 45121663Sharti 46121663Shartistatic struct tok ospf_option_values[] = { 47121663Sharti { OSPF_OPTION_T, "TOS" }, 48121663Sharti { OSPF_OPTION_E, "External" }, 49121663Sharti { OSPF_OPTION_MC, "Multicast" }, 50121663Sharti { OSPF_OPTION_NP, "NSSA" }, 51121663Sharti { OSPF_OPTION_EA, "Advertise External" }, 52121663Sharti { OSPF_OPTION_DC, "Demand Circuit" }, 53121663Sharti { OSPF_OPTION_O, "Opaque" }, 54121663Sharti { OSPF_OPTION_DN, "Up/Down" }, 55121663Sharti { 0, NULL } 56121663Sharti}; 57121663Sharti 58121663Shartistatic struct tok ospf_authtype_values[] = { 59121663Sharti { OSPF_AUTH_NONE, "none" }, 60121663Sharti { OSPF_AUTH_NONE, "simple" }, 61121663Sharti { OSPF_AUTH_MD5, "MD5" }, 62121663Sharti { 0, NULL } 63121663Sharti}; 64121663Sharti 65121663Shartistatic struct tok ospf_rla_flag_values[] = { 66121663Sharti { RLA_FLAG_B, "ABR" }, 67121663Sharti { RLA_FLAG_E, "ASBR" }, 68121663Sharti { RLA_FLAG_W1, "Virtual" }, 69121663Sharti { RLA_FLAG_W2, "W2" }, 70121663Sharti { 0, NULL } 71121663Sharti}; 72121663Sharti 73121663Shartistatic struct tok type2str[] = { 74121663Sharti { OSPF_TYPE_UMD, "UMD" }, 75121663Sharti { OSPF_TYPE_HELLO, "Hello" }, 76121663Sharti { OSPF_TYPE_DD, "Database Description" }, 77121663Sharti { OSPF_TYPE_LS_REQ, "LS-Request" }, 78121663Sharti { OSPF_TYPE_LS_UPDATE, "LS-Update" }, 79121663Sharti { OSPF_TYPE_LS_ACK, "LS-Ack" }, 80121663Sharti { 0, NULL } 81121663Sharti}; 82121663Sharti 83121663Shartistatic struct tok lsa_values[] = { 84121663Sharti { LS_TYPE_ROUTER, "Router" }, 85121663Sharti { LS_TYPE_NETWORK, "Network" }, 86121663Sharti { LS_TYPE_SUM_IP, "Summary" }, 87121663Sharti { LS_TYPE_SUM_ABR, "ASBR Summary" }, 88121663Sharti { LS_TYPE_ASE, "External" }, 89121663Sharti { LS_TYPE_GROUP, "Multicast Group" }, 90121663Sharti { LS_TYPE_NSSA, "NSSA" }, 91121663Sharti { LS_TYPE_OPAQUE_LL, "Link Local Opaque" }, 92121663Sharti { LS_TYPE_OPAQUE_AL, "Area Local Opaque" }, 93121663Sharti { LS_TYPE_OPAQUE_DW, "Domain Wide Opaque" }, 94121663Sharti { 0, NULL } 95121663Sharti}; 96121663Sharti 97121663Shartistatic struct tok ospf_dd_flag_values[] = { 98121663Sharti { OSPF_DB_INIT, "Init" }, 99121663Sharti { OSPF_DB_MORE, "More" }, 100121663Sharti { OSPF_DB_MASTER, "Master" }, 101121663Sharti { 0, NULL } 102121663Sharti}; 103121663Sharti 104121663Shartistatic struct tok lsa_opaque_values[] = { 105121663Sharti { LS_OPAQUE_TYPE_TE, "Traffic Engineering" }, 106121663Sharti { LS_OPAQUE_TYPE_GRACE, "Graceful restart" }, 107121663Sharti { LS_OPAQUE_TYPE_RI, "Router Information" }, 108121663Sharti { 0, NULL } 109121663Sharti}; 110121663Sharti 111121663Shartistatic struct tok lsa_opaque_te_tlv_values[] = { 112121663Sharti { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" }, 113121663Sharti { LS_OPAQUE_TE_TLV_LINK, "Link" }, 114121663Sharti { 0, NULL } 115121663Sharti}; 116121663Sharti 117121663Shartistatic struct tok lsa_opaque_te_link_tlv_subtlv_values[] = { 118121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE, "Link Type" }, 119121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID, "Link ID" }, 120121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP, "Local Interface IP address" }, 121121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP, "Remote Interface IP address" }, 122121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC, "Traffic Engineering Metric" }, 123121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW, "Maximum Bandwidth" }, 124121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW, "Maximum Reservable Bandwidth" }, 125121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW, "Unreserved Bandwidth" }, 126121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP, "Administrative Group" }, 127121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" }, 128121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" }, 129121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR, "Interface Switching Capability" }, 130121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP, "Shared Risk Link Group" }, 131121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_DIFFSERV_TE, "Diffserv TE" }, 132121663Sharti { 0, NULL } 133121663Sharti}; 134121663Sharti 135121663Shartistatic struct tok lsa_opaque_grace_tlv_values[] = { 136121663Sharti { LS_OPAQUE_GRACE_TLV_PERIOD, "Grace Period" }, 137121663Sharti { LS_OPAQUE_GRACE_TLV_REASON, "Graceful restart Reason" }, 138121663Sharti { LS_OPAQUE_GRACE_TLV_INT_ADDRESS, "IPv4 interface address" }, 139121663Sharti { 0, NULL } 140121663Sharti}; 141121663Sharti 142121663Shartistatic struct tok lsa_opaque_grace_tlv_reason_values[] = { 143121663Sharti { LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN, "Unknown" }, 144121663Sharti { LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART, "Software Restart" }, 145121663Sharti { LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE, "Software Reload/Upgrade" }, 146121663Sharti { LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH, "Control Processor Switch" }, 147121663Sharti { 0, NULL } 148121663Sharti}; 149121663Sharti 150121663Shartistatic struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = { 151121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" }, 152121663Sharti { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA, "Multi-Access" }, 153121663Sharti { 0, NULL } 154121663Sharti}; 155121663Sharti 156121663Shartistatic struct tok lsa_opaque_ri_tlv_values[] = { 157121663Sharti { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" }, 158121663Sharti { 0, NULL } 159121663Sharti}; 160121663Sharti 161121663Shartistatic struct tok lsa_opaque_ri_tlv_cap_values[] = { 162121663Sharti { 1, "Reserved" }, 163121663Sharti { 2, "Reserved" }, 164121663Sharti { 4, "Reserved" }, 165121663Sharti { 8, "Reserved" }, 166121663Sharti { 16, "graceful restart capable" }, 167121663Sharti { 32, "graceful restart helper" }, 168121663Sharti { 64, "Stub router support" }, 169121663Sharti { 128, "Traffic engineering" }, 170121663Sharti { 256, "p2p over LAN" }, 171121663Sharti { 512, "path computation server" }, 172121663Sharti { 0, NULL } 173121663Sharti}; 174121663Sharti 175121663Shartistatic char tstr[] = " [|ospf]"; 176121663Sharti 177121663Sharti#ifdef WIN32 178121663Sharti#define inline __inline 179121663Sharti#endif /* WIN32 */ 180121663Sharti 181121663Shartistatic int ospf_print_lshdr(const struct lsa_hdr *); 182121663Shartistatic const u_char *ospf_print_lsa(const struct lsa *); 183121663Shartistatic int ospf_decode_v2(const struct ospfhdr *, const u_char *); 184121663Sharti 185121663Shartistatic int 186121663Shartiospf_print_lshdr(register const struct lsa_hdr *lshp) 187121663Sharti{ 188121663Sharti u_int ls_length; 189121663Sharti 190121663Sharti TCHECK(lshp->ls_length); 191121663Sharti ls_length = EXTRACT_16BITS(&lshp->ls_length); 192121663Sharti if (ls_length < sizeof(struct lsa_hdr)) { 193121663Sharti printf("\n\t Bogus length %u < %lu", ls_length, 194121663Sharti (unsigned long)sizeof(struct lsa_hdr)); 195121663Sharti return(-1); 196121663Sharti } 197121663Sharti 198121663Sharti TCHECK(lshp->ls_seq); /* XXX - ls_length check checked this */ 199121663Sharti printf("\n\t Advertising Router: %s, seq 0x%08x, age %us, length: %u", 200121663Sharti ipaddr_string(&lshp->ls_router), 201121663Sharti EXTRACT_32BITS(&lshp->ls_seq), 202121663Sharti EXTRACT_16BITS(&lshp->ls_age), 203121663Sharti ls_length-(u_int)sizeof(struct lsa_hdr)); 204121663Sharti 205121663Sharti TCHECK(lshp->ls_type); /* XXX - ls_length check checked this */ 206121663Sharti switch (lshp->ls_type) { 207121663Sharti /* the LSA header for opaque LSAs was slightly changed */ 208121663Sharti case LS_TYPE_OPAQUE_LL: 209121663Sharti case LS_TYPE_OPAQUE_AL: 210121663Sharti case LS_TYPE_OPAQUE_DW: 211121663Sharti printf("\n\t %s LSA (%d), Opaque-Type: %s LSA (%u), Opaque-ID: %u", 212121663Sharti tok2str(lsa_values,"unknown",lshp->ls_type), 213121663Sharti lshp->ls_type, 214121663Sharti 215121663Sharti tok2str(lsa_opaque_values, 216121663Sharti "unknown", 217121663Sharti *(&lshp->un_lsa_id.opaque_field.opaque_type)), 218121663Sharti *(&lshp->un_lsa_id.opaque_field.opaque_type), 219121663Sharti EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id) 220121663Sharti 221121663Sharti ); 222121663Sharti break; 223121663Sharti 224121663Sharti /* all other LSA types use regular style LSA headers */ 225121663Sharti default: 226121663Sharti printf("\n\t %s LSA (%d), LSA-ID: %s", 227121663Sharti tok2str(lsa_values,"unknown",lshp->ls_type), 228121663Sharti lshp->ls_type, 229121663Sharti ipaddr_string(&lshp->un_lsa_id.lsa_id)); 230121663Sharti break; 231121663Sharti } 232121663Sharti 233121663Sharti TCHECK(lshp->ls_options); /* XXX - ls_length check checked this */ 234121663Sharti printf("\n\t Options: [%s]", bittok2str(ospf_option_values,"none",lshp->ls_options)); 235121663Sharti 236121663Sharti return (ls_length); 237121663Shartitrunc: 238121663Sharti return (-1); 239121663Sharti} 240121663Sharti 241121663Sharti/* 242121663Sharti * Print a single link state advertisement. If truncated or if LSA length 243121663Sharti * field is less than the length of the LSA header, return NULl, else 244121663Sharti * return pointer to data past end of LSA. 245121663Sharti */ 246121663Shartistatic const u_int8_t * 247121663Shartiospf_print_lsa(register const struct lsa *lsap) 248121663Sharti{ 249121663Sharti register const u_int8_t *ls_end; 250121663Sharti register const struct rlalink *rlp; 251121663Sharti register const struct tos_metric *tosp; 252121663Sharti register const struct in_addr *ap; 253121663Sharti register const struct aslametric *almp; 254121663Sharti register const struct mcla *mcp; 255121663Sharti register const u_int32_t *lp; 256121663Sharti register int j, k, tlv_type, tlv_length, subtlv_type, subtlv_length, priority_level, bandwidth_constraint; 257121663Sharti register int ls_length; 258121663Sharti const u_int8_t *tptr; 259121663Sharti int count_srlg; 260121663Sharti union { /* int to float conversion buffer for several subTLVs */ 261121663Sharti float f; 262121663Sharti u_int32_t i; 263121663Sharti } bw; 264121663Sharti 265121663Sharti tptr = (u_int8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */ 266121663Sharti ls_length = ospf_print_lshdr(&lsap->ls_hdr); 267121663Sharti if (ls_length == -1) 268121663Sharti return(NULL); 269121663Sharti ls_end = (u_int8_t *)lsap + ls_length; 270121663Sharti ls_length -= sizeof(struct lsa_hdr); 271121663Sharti 272121663Sharti switch (lsap->ls_hdr.ls_type) { 273121663Sharti 274121663Sharti case LS_TYPE_ROUTER: 275121663Sharti TCHECK(lsap->lsa_un.un_rla.rla_flags); 276121663Sharti printf("\n\t Router LSA Options: [%s]", bittok2str(ospf_rla_flag_values,"none",lsap->lsa_un.un_rla.rla_flags)); 277121663Sharti 278121663Sharti TCHECK(lsap->lsa_un.un_rla.rla_count); 279121663Sharti j = EXTRACT_16BITS(&lsap->lsa_un.un_rla.rla_count); 280121663Sharti TCHECK(lsap->lsa_un.un_rla.rla_link); 281121663Sharti rlp = lsap->lsa_un.un_rla.rla_link; 282121663Sharti while (j--) { 283121663Sharti TCHECK(*rlp); 284121663Sharti switch (rlp->link_type) { 285121663Sharti 286121663Sharti case RLA_TYPE_VIRTUAL: 287121663Sharti printf("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s", 288121663Sharti ipaddr_string(&rlp->link_id), 289121663Sharti ipaddr_string(&rlp->link_data)); 290121663Sharti break; 291121663Sharti 292121663Sharti case RLA_TYPE_ROUTER: 293121663Sharti printf("\n\t Neighbor Router-ID: %s, Interface Address: %s", 294121663Sharti ipaddr_string(&rlp->link_id), 295121663Sharti ipaddr_string(&rlp->link_data)); 296121663Sharti break; 297121663Sharti 298121663Sharti case RLA_TYPE_TRANSIT: 299121663Sharti printf("\n\t Neighbor Network-ID: %s, Interface Address: %s", 300121663Sharti ipaddr_string(&rlp->link_id), 301121663Sharti ipaddr_string(&rlp->link_data)); 302121663Sharti break; 303121663Sharti 304121663Sharti case RLA_TYPE_STUB: 305121663Sharti printf("\n\t Stub Network: %s, Mask: %s", 306121663Sharti ipaddr_string(&rlp->link_id), 307121663Sharti ipaddr_string(&rlp->link_data)); 308121663Sharti break; 309121663Sharti 310121663Sharti default: 311121663Sharti printf("\n\t Unknown Router Link Type (%u)", 312121663Sharti rlp->link_type); 313121663Sharti return (ls_end); 314121663Sharti } 315121663Sharti printf(", tos 0, metric: %d", EXTRACT_16BITS(&rlp->link_tos0metric)); 316121663Sharti tosp = (struct tos_metric *) 317121663Sharti ((sizeof rlp->link_tos0metric) + (u_char *) rlp); 318121663Sharti for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) { 319121663Sharti TCHECK(*tosp); 320121663Sharti printf(", tos %d, metric: %d", 321121663Sharti tosp->tos_type, 322121663Sharti EXTRACT_16BITS(&tosp->tos_metric)); 323121663Sharti } 324121663Sharti rlp = (struct rlalink *)((u_char *)(rlp + 1) + 325121663Sharti ((rlp->link_toscount) * sizeof(*tosp))); 326121663Sharti } 327121663Sharti break; 328121663Sharti 329121663Sharti case LS_TYPE_NETWORK: 330121663Sharti TCHECK(lsap->lsa_un.un_nla.nla_mask); 331121663Sharti printf("\n\t Mask %s\n\t Connected Routers:", 332121663Sharti ipaddr_string(&lsap->lsa_un.un_nla.nla_mask)); 333121663Sharti ap = lsap->lsa_un.un_nla.nla_router; 334121663Sharti while ((u_char *)ap < ls_end) { 335121663Sharti TCHECK(*ap); 336121663Sharti printf("\n\t %s", ipaddr_string(ap)); 337121663Sharti ++ap; 338121663Sharti } 339121663Sharti break; 340121663Sharti 341121663Sharti case LS_TYPE_SUM_IP: 342121663Sharti TCHECK(lsap->lsa_un.un_nla.nla_mask); 343121663Sharti printf("\n\t Mask %s", 344121663Sharti ipaddr_string(&lsap->lsa_un.un_sla.sla_mask)); 345121663Sharti TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); 346121663Sharti lp = lsap->lsa_un.un_sla.sla_tosmetric; 347121663Sharti /* suppress tos if its not supported */ 348121663Sharti if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) { 349121663Sharti printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC); 350121663Sharti break; 351121663Sharti } 352121663Sharti while ((u_char *)lp < ls_end) { 353121663Sharti register u_int32_t ul; 354121663Sharti 355121663Sharti TCHECK(*lp); 356121663Sharti ul = EXTRACT_32BITS(lp); 357121663Sharti printf(", tos %d metric %d", 358121663Sharti (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS, 359121663Sharti ul & SLA_MASK_METRIC); 360121663Sharti ++lp; 361121663Sharti } 362121663Sharti break; 363121663Sharti 364121663Sharti case LS_TYPE_SUM_ABR: 365121663Sharti TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); 366121663Sharti lp = lsap->lsa_un.un_sla.sla_tosmetric; 367121663Sharti /* suppress tos if its not supported */ 368121663Sharti if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) { 369121663Sharti printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC); 370121663Sharti break; 371121663Sharti } 372121663Sharti while ((u_char *)lp < ls_end) { 373121663Sharti register u_int32_t ul; 374121663Sharti 375121663Sharti TCHECK(*lp); 376121663Sharti ul = EXTRACT_32BITS(lp); 377121663Sharti printf(", tos %d metric %d", 378121663Sharti (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS, 379121663Sharti ul & SLA_MASK_METRIC); 380121663Sharti ++lp; 381121663Sharti } 382121663Sharti break; 383121663Sharti 384121663Sharti case LS_TYPE_ASE: 385121663Sharti case LS_TYPE_NSSA: /* fall through - those LSAs share the same format */ 386121663Sharti TCHECK(lsap->lsa_un.un_nla.nla_mask); 387121663Sharti printf("\n\t Mask %s", 388121663Sharti ipaddr_string(&lsap->lsa_un.un_asla.asla_mask)); 389121663Sharti 390121663Sharti TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); 391121663Sharti almp = lsap->lsa_un.un_asla.asla_metric; 392121663Sharti while ((u_char *)almp < ls_end) { 393121663Sharti register u_int32_t ul; 394121663Sharti 395121663Sharti TCHECK(almp->asla_tosmetric); 396121663Sharti ul = EXTRACT_32BITS(&almp->asla_tosmetric); 397121663Sharti printf(", type %d, tos %d metric:", 398121663Sharti (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1, 399121663Sharti (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS); 400121663Sharti if ((ul & ASLA_MASK_METRIC)==0xffffff) 401121663Sharti printf(" infinite"); 402121663Sharti else 403121663Sharti printf(" %d", (ul & ASLA_MASK_METRIC)); 404121663Sharti 405121663Sharti TCHECK(almp->asla_forward); 406121663Sharti if (almp->asla_forward.s_addr) { 407121663Sharti printf(", forward %s", 408121663Sharti ipaddr_string(&almp->asla_forward)); 409121663Sharti } 410121663Sharti TCHECK(almp->asla_tag); 411121663Sharti if (almp->asla_tag.s_addr) { 412121663Sharti printf(", tag %s", 413121663Sharti ipaddr_string(&almp->asla_tag)); 414121663Sharti } 415121663Sharti ++almp; 416121663Sharti } 417121663Sharti break; 418121663Sharti 419121663Sharti case LS_TYPE_GROUP: 420121663Sharti /* Multicast extensions as of 23 July 1991 */ 421121663Sharti mcp = lsap->lsa_un.un_mcla; 422121663Sharti while ((u_char *)mcp < ls_end) { 423121663Sharti TCHECK(mcp->mcla_vid); 424121663Sharti switch (EXTRACT_32BITS(&mcp->mcla_vtype)) { 425121663Sharti 426121663Sharti case MCLA_VERTEX_ROUTER: 427121663Sharti printf("\n\t Router Router-ID %s", 428121663Sharti ipaddr_string(&mcp->mcla_vid)); 429121663Sharti break; 430121663Sharti 431121663Sharti 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 (priority_level = 0; priority_level < 8; priority_level++) { 631 bw.i = EXTRACT_32BITS(tptr+priority_level*4); 632 printf("\n\t\tpriority level %d: %.3f Mbps", 633 priority_level, 634 bw.f*8/1000000 ); 635 } 636 break; 637 case LS_OPAQUE_TE_LINK_SUBTLV_DIFFSERV_TE: 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 (bandwidth_constraint = 0; bandwidth_constraint < (subtlv_length-4)/4; bandwidth_constraint++) { 643 bw.i = EXTRACT_32BITS(tptr+4+bandwidth_constraint*4); 644 printf("\n\t\t Bandwidth constraint %d: %.3f Mbps", 645 bandwidth_constraint, 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 if (fn_printn(op->ospf_authdata, 936 sizeof(op->ospf_authdata), snapend)) { 937 printf("\""); 938 goto trunc; 939 } 940 printf("\""); 941 break; 942 943 case OSPF_AUTH_MD5: 944 printf("\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x", 945 *((op->ospf_authdata)+2), 946 *((op->ospf_authdata)+3), 947 EXTRACT_32BITS((op->ospf_authdata)+4)); 948 break; 949 950 default: 951 return; 952 } 953 } 954 /* Do rest according to version. */ 955 switch (op->ospf_version) { 956 957 case 2: 958 /* ospf version 2 */ 959 if (ospf_decode_v2(op, dataend)) 960 goto trunc; 961 break; 962 963 default: 964 printf(" ospf [version %d]", op->ospf_version); 965 break; 966 } /* end switch on version */ 967 968 return; 969trunc: 970 fputs(tstr, stdout); 971} 972