| /* |
| * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that: (1) source code distributions |
| * retain the above copyright notice and this paragraph in its entirety, (2) |
| * distributions including binary code include the above copyright notice and |
| * this paragraph in its entirety in the documentation or other materials |
| * provided with the distribution, and (3) all advertising materials mentioning |
| * features or use of this software display the following acknowledgement: |
| * ``This product includes software developed by the University of California, |
| * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| * the University nor the names of its contributors may be used to endorse |
| * or promote products derived from this software without specific prior |
| * written permission. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu) |
| */ |
| |
| #ifndef lint |
| static const char rcsid[] _U_ = |
| "@(#) $Header: /tcpdump/master/tcpdump/print-ospf6.c,v 1.15 2006-09-13 06:31:11 guy Exp $ (LBL)"; |
| #endif |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <tcpdump-stdinc.h> |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "interface.h" |
| #include "addrtoname.h" |
| #include "extract.h" |
| |
| #include "ospf.h" |
| #include "ospf6.h" |
| |
| static const struct tok ospf6_option_values[] = { |
| { OSPF6_OPTION_V6, "V6" }, |
| { OSPF6_OPTION_E, "External" }, |
| { OSPF6_OPTION_MC, "Multicast" }, |
| { OSPF6_OPTION_N, "NSSA" }, |
| { OSPF6_OPTION_R, "Router" }, |
| { OSPF6_OPTION_DC, "Demand Circuit" }, |
| { 0, NULL } |
| }; |
| |
| static const struct tok ospf6_rla_flag_values[] = { |
| { RLA_FLAG_B, "ABR" }, |
| { RLA_FLAG_E, "External" }, |
| { RLA_FLAG_V, "Virtual-Link Endpoint" }, |
| { RLA_FLAG_W, "Wildcard Receiver" }, |
| { RLA_FLAG_N, "NSSA Translator" }, |
| { 0, NULL } |
| }; |
| |
| static const struct tok ospf6_asla_flag_values[] = { |
| { ASLA_FLAG_EXTERNAL, "External Type 2" }, |
| { ASLA_FLAG_FWDADDR, "Fforwarding" }, |
| { ASLA_FLAG_ROUTETAG, "Tag" }, |
| { 0, NULL } |
| }; |
| |
| static struct tok ospf6_type_values[] = { |
| { OSPF_TYPE_HELLO, "Hello" }, |
| { OSPF_TYPE_DD, "Database Description" }, |
| { OSPF_TYPE_LS_REQ, "LS-Request" }, |
| { OSPF_TYPE_LS_UPDATE, "LS-Update" }, |
| { OSPF_TYPE_LS_ACK, "LS-Ack" }, |
| { 0, NULL } |
| }; |
| |
| static struct tok ospf6_lsa_values[] = { |
| { LS_TYPE_ROUTER, "Router" }, |
| { LS_TYPE_NETWORK, "Network" }, |
| { LS_TYPE_INTER_AP, "Inter-Area Prefix" }, |
| { LS_TYPE_INTER_AR, "Inter-Area Router" }, |
| { LS_TYPE_ASE, "External" }, |
| { LS_TYPE_GROUP, "Multicast Group" }, |
| { LS_TYPE_NSSA, "NSSA" }, |
| { LS_TYPE_LINK, "Link" }, |
| { LS_TYPE_INTRA_AP, "Intra-Area Prefix" }, |
| { LS_TYPE_INTRA_ATE, "Intra-Area TE" }, |
| { LS_TYPE_GRACE, "Grace" }, |
| { 0, NULL } |
| }; |
| |
| static struct tok ospf6_ls_scope_values[] = { |
| { LS_SCOPE_LINKLOCAL, "Link Local" }, |
| { LS_SCOPE_AREA, "Area Local" }, |
| { LS_SCOPE_AS, "Domain Wide" }, |
| { 0, NULL } |
| }; |
| |
| static struct tok ospf6_dd_flag_values[] = { |
| { OSPF6_DB_INIT, "Init" }, |
| { OSPF6_DB_MORE, "More" }, |
| { OSPF6_DB_MASTER, "Master" }, |
| { 0, NULL } |
| }; |
| |
| static struct tok ospf6_lsa_prefix_option_values[] = { |
| { LSA_PREFIX_OPT_NU, "No Unicast" }, |
| { LSA_PREFIX_OPT_LA, "Local address" }, |
| { LSA_PREFIX_OPT_MC, "Multicast" }, |
| { LSA_PREFIX_OPT_P, "Propagate" }, |
| { LSA_PREFIX_OPT_DN, "Down" }, |
| { 0, NULL } |
| }; |
| |
| static char tstr[] = " [|ospf3]"; |
| |
| #ifdef WIN32 |
| #define inline __inline |
| #endif /* WIN32 */ |
| |
| /* Forwards */ |
| static void ospf6_print_ls_type(u_int, const rtrid_t *); |
| static int ospf6_print_lshdr(const struct lsa6_hdr *); |
| static int ospf6_print_lsa(const struct lsa6 *); |
| static int ospf6_decode_v3(const struct ospf6hdr *, const u_char *); |
| |
| |
| static void |
| ospf6_print_ls_type(register u_int ls_type, register const rtrid_t *ls_stateid) |
| { |
| printf("\n\t %s LSA (%d), %s Scope%s, LSA-ID %s", |
| tok2str(ospf6_lsa_values, "Unknown", ls_type & LS_TYPE_MASK), |
| ls_type & LS_TYPE_MASK, |
| tok2str(ospf6_ls_scope_values, "Unknown", ls_type & LS_SCOPE_MASK), |
| ls_type &0x8000 ? ", transitive" : "", /* U-bit */ |
| ipaddr_string(ls_stateid)); |
| } |
| |
| static int |
| ospf6_print_lshdr(register const struct lsa6_hdr *lshp) |
| { |
| |
| TCHECK(lshp->ls_type); |
| TCHECK(lshp->ls_seq); |
| |
| printf("\n\t Advertising Router %s, seq 0x%08x, age %us, length %u", |
| ipaddr_string(&lshp->ls_router), |
| EXTRACT_32BITS(&lshp->ls_seq), |
| EXTRACT_16BITS(&lshp->ls_age), |
| EXTRACT_16BITS(&lshp->ls_length)-(u_int)sizeof(struct lsa6_hdr)); |
| |
| ospf6_print_ls_type(EXTRACT_16BITS(&lshp->ls_type), &lshp->ls_stateid); |
| |
| return (0); |
| trunc: |
| return (1); |
| } |
| |
| static int |
| ospf6_print_lsaprefix(const u_int8_t *tptr, u_int lsa_length) |
| { |
| const struct lsa6_prefix *lsapp = (struct lsa6_prefix *)tptr; |
| u_int wordlen; |
| struct in6_addr prefix; |
| |
| if (lsa_length < sizeof (*lsapp) - 4) |
| goto trunc; |
| lsa_length -= sizeof (*lsapp) - 4; |
| TCHECK2(*lsapp, sizeof (*lsapp) - 4); |
| wordlen = (lsapp->lsa_p_len + 31) / 32; |
| if (wordlen * 4 > sizeof(struct in6_addr)) { |
| printf(" bogus prefixlen /%d", lsapp->lsa_p_len); |
| goto trunc; |
| } |
| if (lsa_length < wordlen * 4) |
| goto trunc; |
| lsa_length -= wordlen * 4; |
| TCHECK2(lsapp->lsa_p_prefix, wordlen * 4); |
| memset(&prefix, 0, sizeof(prefix)); |
| memcpy(&prefix, lsapp->lsa_p_prefix, wordlen * 4); |
| printf("\n\t\t%s/%d", ip6addr_string(&prefix), |
| lsapp->lsa_p_len); |
| if (lsapp->lsa_p_opt) { |
| printf(", Options [%s]", |
| bittok2str(ospf6_lsa_prefix_option_values, |
| "none", lsapp->lsa_p_opt)); |
| } |
| printf(", metric %u", EXTRACT_16BITS(&lsapp->lsa_p_metric)); |
| return sizeof(*lsapp) - 4 + wordlen * 4; |
| |
| trunc: |
| return -1; |
| } |
| |
| |
| /* |
| * Print a single link state advertisement. If truncated return 1, else 0. |
| */ |
| static int |
| ospf6_print_lsa(register const struct lsa6 *lsap) |
| { |
| register const struct rlalink6 *rlp; |
| #if 0 |
| register const struct tos_metric *tosp; |
| #endif |
| register const rtrid_t *ap; |
| #if 0 |
| register const struct aslametric *almp; |
| register const struct mcla *mcp; |
| #endif |
| register const struct llsa *llsap; |
| register const struct lsa6_prefix *lsapp; |
| #if 0 |
| register const u_int32_t *lp; |
| #endif |
| register u_int prefixes; |
| register int bytelen; |
| register u_int length, lsa_length; |
| u_int32_t flags32; |
| const u_int8_t *tptr; |
| |
| if (ospf6_print_lshdr(&lsap->ls_hdr)) |
| return (1); |
| TCHECK(lsap->ls_hdr.ls_length); |
| length = EXTRACT_16BITS(&lsap->ls_hdr.ls_length); |
| |
| /* |
| * The LSA length includes the length of the header; |
| * it must have a value that's at least that length. |
| * If it does, find the length of what follows the |
| * header. |
| */ |
| if (length < sizeof(struct lsa6_hdr)) |
| return (1); |
| lsa_length = length - sizeof(struct lsa6_hdr); |
| tptr = (u_int8_t *)lsap+sizeof(struct lsa6_hdr); |
| |
| switch (EXTRACT_16BITS(&lsap->ls_hdr.ls_type)) { |
| case LS_TYPE_ROUTER | LS_SCOPE_AREA: |
| if (lsa_length < sizeof (lsap->lsa_un.un_rla.rla_options)) |
| return (1); |
| lsa_length -= sizeof (lsap->lsa_un.un_rla.rla_options); |
| TCHECK(lsap->lsa_un.un_rla.rla_options); |
| printf("\n\t Options [%s]", |
| bittok2str(ospf6_option_values, "none", |
| EXTRACT_32BITS(&lsap->lsa_un.un_rla.rla_options))); |
| printf(", RLA-Flags [%s]", |
| bittok2str(ospf6_rla_flag_values, "none", |
| lsap->lsa_un.un_rla.rla_flags)); |
| |
| rlp = lsap->lsa_un.un_rla.rla_link; |
| while (lsa_length != 0) { |
| if (lsa_length < sizeof (*rlp)) |
| return (1); |
| lsa_length -= sizeof (*rlp); |
| TCHECK(*rlp); |
| switch (rlp->link_type) { |
| |
| case RLA_TYPE_VIRTUAL: |
| printf("\n\t Virtual Link: Neighbor Router-ID %s" |
| "\n\t Neighbor Interface-ID %s, Interface %s", |
| ipaddr_string(&rlp->link_nrtid), |
| ipaddr_string(&rlp->link_nifid), |
| ipaddr_string(&rlp->link_ifid)); |
| break; |
| |
| case RLA_TYPE_ROUTER: |
| printf("\n\t Neighbor Router-ID %s" |
| "\n\t Neighbor Interface-ID %s, Interface %s", |
| ipaddr_string(&rlp->link_nrtid), |
| ipaddr_string(&rlp->link_nifid), |
| ipaddr_string(&rlp->link_ifid)); |
| break; |
| |
| case RLA_TYPE_TRANSIT: |
| printf("\n\t Neighbor Network-ID %s" |
| "\n\t Neighbor Interface-ID %s, Interface %s", |
| ipaddr_string(&rlp->link_nrtid), |
| ipaddr_string(&rlp->link_nifid), |
| ipaddr_string(&rlp->link_ifid)); |
| break; |
| |
| default: |
| printf("\n\t Unknown Router Links Type 0x%02x", |
| rlp->link_type); |
| return (0); |
| } |
| printf(", metric %d", EXTRACT_16BITS(&rlp->link_metric)); |
| rlp++; |
| } |
| break; |
| |
| case LS_TYPE_NETWORK | LS_SCOPE_AREA: |
| if (lsa_length < sizeof (lsap->lsa_un.un_nla.nla_options)) |
| return (1); |
| lsa_length -= sizeof (lsap->lsa_un.un_nla.nla_options); |
| TCHECK(lsap->lsa_un.un_nla.nla_options); |
| printf("\n\t Options [%s]", |
| bittok2str(ospf6_option_values, "none", |
| EXTRACT_32BITS(&lsap->lsa_un.un_nla.nla_options))); |
| |
| printf("\n\t Connected Routers:"); |
| ap = lsap->lsa_un.un_nla.nla_router; |
| while (lsa_length != 0) { |
| if (lsa_length < sizeof (*ap)) |
| return (1); |
| lsa_length -= sizeof (*ap); |
| TCHECK(*ap); |
| printf("\n\t\t%s", ipaddr_string(ap)); |
| ++ap; |
| } |
| break; |
| |
| case LS_TYPE_INTER_AP | LS_SCOPE_AREA: |
| if (lsa_length < sizeof (lsap->lsa_un.un_inter_ap.inter_ap_metric)) |
| return (1); |
| lsa_length -= sizeof (lsap->lsa_un.un_inter_ap.inter_ap_metric); |
| TCHECK(lsap->lsa_un.un_inter_ap.inter_ap_metric); |
| printf(", metric %u", |
| EXTRACT_32BITS(&lsap->lsa_un.un_inter_ap.inter_ap_metric) & SLA_MASK_METRIC); |
| |
| tptr = (u_int8_t *)lsap->lsa_un.un_inter_ap.inter_ap_prefix; |
| while (lsa_length != 0) { |
| bytelen = ospf6_print_lsaprefix(tptr, lsa_length); |
| if (bytelen < 0) |
| goto trunc; |
| lsa_length -= bytelen; |
| tptr += bytelen; |
| } |
| break; |
| |
| case LS_TYPE_ASE | LS_SCOPE_AS: |
| if (lsa_length < sizeof (lsap->lsa_un.un_asla.asla_metric)) |
| return (1); |
| lsa_length -= sizeof (lsap->lsa_un.un_asla.asla_metric); |
| TCHECK(lsap->lsa_un.un_asla.asla_metric); |
| flags32 = EXTRACT_32BITS(&lsap->lsa_un.un_asla.asla_metric); |
| printf("\n\t Flags [%s]", |
| bittok2str(ospf6_asla_flag_values, "none", flags32)); |
| printf(" metric %u", |
| EXTRACT_32BITS(&lsap->lsa_un.un_asla.asla_metric) & |
| ASLA_MASK_METRIC); |
| |
| tptr = (u_int8_t *)lsap->lsa_un.un_asla.asla_prefix; |
| lsapp = (struct lsa6_prefix *)tptr; |
| bytelen = ospf6_print_lsaprefix(tptr, lsa_length); |
| if (bytelen < 0) |
| goto trunc; |
| lsa_length -= bytelen; |
| tptr += bytelen; |
| |
| if ((flags32 & ASLA_FLAG_FWDADDR) != 0) { |
| struct in6_addr *fwdaddr6; |
| |
| fwdaddr6 = (struct in6_addr *)tptr; |
| if (lsa_length < sizeof (*fwdaddr6)) |
| return (1); |
| lsa_length -= sizeof (*fwdaddr6); |
| TCHECK(*fwdaddr6); |
| printf(" forward %s", |
| ip6addr_string(fwdaddr6)); |
| tptr += sizeof(*fwdaddr6); |
| } |
| |
| if ((flags32 & ASLA_FLAG_ROUTETAG) != 0) { |
| if (lsa_length < sizeof (u_int32_t)) |
| return (1); |
| lsa_length -= sizeof (u_int32_t); |
| TCHECK(*(u_int32_t *)tptr); |
| printf(" tag %s", |
| ipaddr_string((u_int32_t *)tptr)); |
| tptr += sizeof(u_int32_t); |
| } |
| |
| if (lsapp->lsa_p_metric) { |
| if (lsa_length < sizeof (u_int32_t)) |
| return (1); |
| lsa_length -= sizeof (u_int32_t); |
| TCHECK(*(u_int32_t *)tptr); |
| printf(" RefLSID: %s", |
| ipaddr_string((u_int32_t *)tptr)); |
| tptr += sizeof(u_int32_t); |
| } |
| break; |
| |
| case LS_TYPE_LINK: |
| /* Link LSA */ |
| llsap = &lsap->lsa_un.un_llsa; |
| if (lsa_length < sizeof (llsap->llsa_priandopt)) |
| return (1); |
| lsa_length -= sizeof (llsap->llsa_priandopt); |
| TCHECK(llsap->llsa_priandopt); |
| printf("\n\t Options [%s]", |
| bittok2str(ospf6_option_values, "none", |
| EXTRACT_32BITS(&llsap->llsa_options))); |
| |
| if (lsa_length < sizeof (llsap->llsa_lladdr) + sizeof (llsap->llsa_nprefix)) |
| return (1); |
| lsa_length -= sizeof (llsap->llsa_lladdr) + sizeof (llsap->llsa_nprefix); |
| prefixes = EXTRACT_32BITS(&llsap->llsa_nprefix); |
| printf("\n\t Priority %d, Link-local address %s, Prefixes %d:", |
| llsap->llsa_priority, |
| ip6addr_string(&llsap->llsa_lladdr), |
| prefixes); |
| |
| tptr = (u_int8_t *)llsap->llsa_prefix; |
| while (prefixes > 0) { |
| bytelen = ospf6_print_lsaprefix(tptr, lsa_length); |
| if (bytelen < 0) |
| goto trunc; |
| prefixes--; |
| lsa_length -= bytelen; |
| tptr += bytelen; |
| } |
| break; |
| |
| case LS_TYPE_INTRA_AP | LS_SCOPE_AREA: |
| /* Intra-Area-Prefix LSA */ |
| if (lsa_length < sizeof (lsap->lsa_un.un_intra_ap.intra_ap_rtid)) |
| return (1); |
| lsa_length -= sizeof (lsap->lsa_un.un_intra_ap.intra_ap_rtid); |
| TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_rtid); |
| ospf6_print_ls_type( |
| EXTRACT_16BITS(&lsap->lsa_un.un_intra_ap.intra_ap_lstype), |
| &lsap->lsa_un.un_intra_ap.intra_ap_lsid); |
| |
| if (lsa_length < sizeof (lsap->lsa_un.un_intra_ap.intra_ap_nprefix)) |
| return (1); |
| lsa_length -= sizeof (lsap->lsa_un.un_intra_ap.intra_ap_nprefix); |
| TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_nprefix); |
| prefixes = EXTRACT_16BITS(&lsap->lsa_un.un_intra_ap.intra_ap_nprefix); |
| printf("\n\t Prefixes %d:", prefixes); |
| |
| tptr = (u_int8_t *)lsap->lsa_un.un_intra_ap.intra_ap_prefix; |
| while (prefixes > 0) { |
| bytelen = ospf6_print_lsaprefix(tptr, lsa_length); |
| if (bytelen < 0) |
| goto trunc; |
| prefixes--; |
| lsa_length -= bytelen; |
| tptr += bytelen; |
| } |
| break; |
| |
| case LS_TYPE_GRACE | LS_SCOPE_LINKLOCAL: |
| if (ospf_print_grace_lsa(tptr, lsa_length) == -1) { |
| return 1; |
| } |
| break; |
| |
| case LS_TYPE_INTRA_ATE | LS_SCOPE_LINKLOCAL: |
| if (ospf_print_te_lsa(tptr, lsa_length) == -1) { |
| return 1; |
| } |
| break; |
| |
| default: |
| if(!print_unknown_data(tptr, |
| "\n\t ", |
| lsa_length)) { |
| return (1); |
| } |
| break; |
| } |
| |
| return (0); |
| trunc: |
| return (1); |
| } |
| |
| static int |
| ospf6_decode_v3(register const struct ospf6hdr *op, |
| register const u_char *dataend) |
| { |
| register const rtrid_t *ap; |
| register const struct lsr6 *lsrp; |
| register const struct lsa6_hdr *lshp; |
| register const struct lsa6 *lsap; |
| register int i; |
| |
| switch (op->ospf6_type) { |
| |
| case OSPF_TYPE_HELLO: |
| printf("\n\tOptions [%s]", |
| bittok2str(ospf6_option_values, "none", |
| EXTRACT_32BITS(&op->ospf6_hello.hello_options))); |
| |
| TCHECK(op->ospf6_hello.hello_deadint); |
| printf("\n\t Hello Timer %us, Dead Timer %us, Interface-ID %s, Priority %u", |
| EXTRACT_16BITS(&op->ospf6_hello.hello_helloint), |
| EXTRACT_16BITS(&op->ospf6_hello.hello_deadint), |
| ipaddr_string(&op->ospf6_hello.hello_ifid), |
| op->ospf6_hello.hello_priority); |
| |
| TCHECK(op->ospf6_hello.hello_dr); |
| if (op->ospf6_hello.hello_dr != 0) |
| printf("\n\t Designated Router %s", |
| ipaddr_string(&op->ospf6_hello.hello_dr)); |
| TCHECK(op->ospf6_hello.hello_bdr); |
| if (op->ospf6_hello.hello_bdr != 0) |
| printf(", Backup Designated Router %s", |
| ipaddr_string(&op->ospf6_hello.hello_bdr)); |
| if (vflag) { |
| printf("\n\t Neighbor List:"); |
| ap = op->ospf6_hello.hello_neighbor; |
| while ((u_char *)ap < dataend) { |
| TCHECK(*ap); |
| printf("\n\t %s", ipaddr_string(ap)); |
| ++ap; |
| } |
| } |
| break; /* HELLO */ |
| |
| case OSPF_TYPE_DD: |
| TCHECK(op->ospf6_db.db_options); |
| printf("\n\tOptions [%s]", |
| bittok2str(ospf6_option_values, "none", |
| EXTRACT_32BITS(&op->ospf6_db.db_options))); |
| TCHECK(op->ospf6_db.db_flags); |
| printf(", DD Flags [%s]", |
| bittok2str(ospf6_dd_flag_values,"none",op->ospf6_db.db_flags)); |
| |
| TCHECK(op->ospf6_db.db_seq); |
| printf(", MTU %u, DD-Sequence 0x%08x", |
| EXTRACT_16BITS(&op->ospf6_db.db_mtu), |
| EXTRACT_32BITS(&op->ospf6_db.db_seq)); |
| |
| /* Print all the LS adv's */ |
| lshp = op->ospf6_db.db_lshdr; |
| while (!ospf6_print_lshdr(lshp)) { |
| ++lshp; |
| } |
| break; |
| |
| case OSPF_TYPE_LS_REQ: |
| if (vflag) { |
| lsrp = op->ospf6_lsr; |
| while ((u_char *)lsrp < dataend) { |
| TCHECK(*lsrp); |
| printf("\n\t Advertising Router %s", |
| ipaddr_string(&lsrp->ls_router)); |
| ospf6_print_ls_type(EXTRACT_16BITS(&lsrp->ls_type), |
| &lsrp->ls_stateid); |
| ++lsrp; |
| } |
| } |
| break; |
| |
| case OSPF_TYPE_LS_UPDATE: |
| if (vflag) { |
| lsap = op->ospf6_lsu.lsu_lsa; |
| TCHECK(op->ospf6_lsu.lsu_count); |
| i = EXTRACT_32BITS(&op->ospf6_lsu.lsu_count); |
| while (i--) { |
| if (ospf6_print_lsa(lsap)) |
| goto trunc; |
| lsap = (struct lsa6 *)((u_char *)lsap + |
| EXTRACT_16BITS(&lsap->ls_hdr.ls_length)); |
| } |
| } |
| break; |
| |
| |
| case OSPF_TYPE_LS_ACK: |
| if (vflag) { |
| lshp = op->ospf6_lsa.lsa_lshdr; |
| |
| while (!ospf6_print_lshdr(lshp)) { |
| ++lshp; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| return (0); |
| trunc: |
| return (1); |
| } |
| |
| void |
| ospf6_print(register const u_char *bp, register u_int length) |
| { |
| register const struct ospf6hdr *op; |
| register const u_char *dataend; |
| register const char *cp; |
| |
| op = (struct ospf6hdr *)bp; |
| |
| /* If the type is valid translate it, or just print the type */ |
| /* value. If it's not valid, say so and return */ |
| TCHECK(op->ospf6_type); |
| cp = tok2str(ospf6_type_values, "unknown LS-type", op->ospf6_type); |
| printf("OSPFv%u, %s, length %d", op->ospf6_version, cp, length); |
| if (*cp == 'u') { |
| return; |
| } |
| |
| if(!vflag) { /* non verbose - so lets bail out here */ |
| return; |
| } |
| |
| TCHECK(op->ospf6_len); |
| if (length != EXTRACT_16BITS(&op->ospf6_len)) { |
| printf(" [len %d]", EXTRACT_16BITS(&op->ospf6_len)); |
| return; |
| } |
| dataend = bp + length; |
| |
| /* Print the routerid if it is not the same as the source */ |
| TCHECK(op->ospf6_routerid); |
| printf("\n\tRouter-ID %s", ipaddr_string(&op->ospf6_routerid)); |
| |
| TCHECK(op->ospf6_areaid); |
| if (op->ospf6_areaid != 0) |
| printf(", Area %s", ipaddr_string(&op->ospf6_areaid)); |
| else |
| printf(", Backbone Area"); |
| TCHECK(op->ospf6_instanceid); |
| if (op->ospf6_instanceid) |
| printf(", Instance %u", op->ospf6_instanceid); |
| |
| /* Do rest according to version. */ |
| switch (op->ospf6_version) { |
| |
| case 3: |
| /* ospf version 3 */ |
| if (ospf6_decode_v3(op, dataend)) |
| goto trunc; |
| break; |
| |
| default: |
| printf(" ospf [version %d]", op->ospf6_version); |
| break; |
| } /* end switch on version */ |
| |
| return; |
| trunc: |
| fputs(tstr, stdout); |
| } |
