814 lines
28 KiB
C
814 lines
28 KiB
C
/*
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* Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-ospf.c,v 1.45.2.4 2004/03/24 02:44:30 guy Exp $ (LBL)";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <tcpdump-stdinc.h>
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#include <stdio.h>
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#include "interface.h"
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#include "addrtoname.h"
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#include "extract.h"
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#include "gmpls.h"
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#include "ospf.h"
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#include "ip.h"
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static struct tok ospf_option_values[] = {
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{ OSPF_OPTION_T, "TOS" },
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{ OSPF_OPTION_E, "External" },
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{ OSPF_OPTION_MC, "Multicast" },
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{ OSPF_OPTION_NP, "NSSA" },
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{ OSPF_OPTION_EA, "Advertise External" },
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{ OSPF_OPTION_DC, "Demand Circuit" },
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{ OSPF_OPTION_O, "Opaque" },
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{ 0, NULL }
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};
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static struct tok ospf_authtype_values[] = {
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{ OSPF_AUTH_NONE, "none" },
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{ OSPF_AUTH_NONE, "simple" },
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{ OSPF_AUTH_MD5, "MD5" },
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{ 0, NULL }
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};
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static struct tok ospf_rla_flag_values[] = {
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{ RLA_FLAG_B, "ABR" },
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{ RLA_FLAG_E, "ASBR" },
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{ RLA_FLAG_W1, "Virtual" },
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{ RLA_FLAG_W2, "W2" },
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{ 0, NULL }
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};
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static struct tok type2str[] = {
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{ OSPF_TYPE_UMD, "UMD" },
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{ OSPF_TYPE_HELLO, "Hello" },
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{ OSPF_TYPE_DD, "Database Description" },
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{ OSPF_TYPE_LS_REQ, "LS-Request" },
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{ OSPF_TYPE_LS_UPDATE, "LS-Update" },
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{ OSPF_TYPE_LS_ACK, "LS-Ack" },
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{ 0, NULL }
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};
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static struct tok lsa_values[] = {
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{ LS_TYPE_ROUTER, "Router" },
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{ LS_TYPE_NETWORK, "Network" },
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{ LS_TYPE_SUM_IP, "Summary" },
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{ LS_TYPE_SUM_ABR, "ASBR Summary" },
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{ LS_TYPE_ASE, "External" },
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{ LS_TYPE_GROUP, "Multicast Group" },
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{ LS_TYPE_NSSA, "NSSA" },
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{ LS_TYPE_OPAQUE_LL, "Link Local Opaque" },
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{ LS_TYPE_OPAQUE_AL, "Area Local Opaque" },
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{ LS_TYPE_OPAQUE_DW, "Domain Wide Opaque" },
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{ 0, NULL }
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};
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static struct tok ospf_dd_flag_values[] = {
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{ OSPF_DB_INIT, "Init" },
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{ OSPF_DB_MORE, "More" },
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{ OSPF_DB_MASTER, "Master" },
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{ 0, NULL }
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};
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static struct tok lsa_opaque_values[] = {
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{ LS_OPAQUE_TYPE_TE, "Traffic Engineering" },
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{ LS_OPAQUE_TYPE_GRACE, "Graceful restart" },
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{ 0, NULL }
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};
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static struct tok lsa_opaque_te_tlv_values[] = {
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{ LS_OPAQUE_TE_TLV_ROUTER, "Router Address" },
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{ LS_OPAQUE_TE_TLV_LINK, "Link" },
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{ 0, NULL }
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};
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static struct tok lsa_opaque_te_link_tlv_subtlv_values[] = {
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{ LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE, "Link Type" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID, "Link ID" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP, "Local Interface IP address" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP, "Remote Interface IP address" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC, "Traffic Engineering Metric" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW, "Maximum Bandwidth" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW, "Maximum Reservable Bandwidth" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW, "Unreserved Bandwidth" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP, "Administrative Group" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP, "Shared Risk Link Group" },
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{ 0, NULL }
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};
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#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP 1 /* rfc3630 */
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#define LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA 2 /* rfc3630 */
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static struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = {
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{ LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" },
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{ LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA, "Multi-Access" },
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{ 0, NULL }
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};
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static char tstr[] = " [|ospf]";
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#ifdef WIN32
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#define inline __inline
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#endif /* WIN32 */
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static int ospf_print_lshdr(const struct lsa_hdr *);
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static const u_char *ospf_print_lsa(const struct lsa *);
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static int ospf_decode_v2(const struct ospfhdr *, const u_char *);
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static int
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ospf_print_lshdr(register const struct lsa_hdr *lshp)
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{
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u_int ls_length;
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TCHECK(lshp->ls_length);
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ls_length = EXTRACT_16BITS(&lshp->ls_length);
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if (ls_length < sizeof(struct lsa_hdr)) {
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printf("\n\t Bogus length %u < %lu", ls_length,
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(unsigned long)sizeof(struct lsa_hdr));
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return(-1);
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}
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TCHECK(lshp->ls_seq); /* XXX - ls_length check checked this */
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printf("\n\t Advertising Router: %s, seq 0x%08x, age %us, length: %u",
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ipaddr_string(&lshp->ls_router),
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EXTRACT_32BITS(&lshp->ls_seq),
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EXTRACT_16BITS(&lshp->ls_age),
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ls_length-(u_int)sizeof(struct lsa_hdr));
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TCHECK(lshp->ls_type); /* XXX - ls_length check checked this */
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switch (lshp->ls_type) {
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/* the LSA header for opaque LSAs was slightly changed */
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case LS_TYPE_OPAQUE_LL:
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case LS_TYPE_OPAQUE_AL:
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case LS_TYPE_OPAQUE_DW:
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printf("\n\t %s LSA (%d), Opaque-Type: %s LSA (%u), Opaque-ID: %u",
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tok2str(lsa_values,"unknown",lshp->ls_type),
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lshp->ls_type,
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tok2str(lsa_opaque_values,
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"unknown",
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*(&lshp->un_lsa_id.opaque_field.opaque_type)),
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*(&lshp->un_lsa_id.opaque_field.opaque_type),
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EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id)
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);
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break;
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/* all other LSA types use regular style LSA headers */
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default:
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printf("\n\t %s LSA (%d), LSA-ID: %s",
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tok2str(lsa_values,"unknown",lshp->ls_type),
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lshp->ls_type,
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ipaddr_string(&lshp->un_lsa_id.lsa_id));
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break;
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}
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TCHECK(lshp->ls_options); /* XXX - ls_length check checked this */
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printf("\n\t Options: [%s]", bittok2str(ospf_option_values,"none",lshp->ls_options));
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return (ls_length);
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trunc:
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return (-1);
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}
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/*
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* Print a single link state advertisement. If truncated or if LSA length
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* field is less than the length of the LSA header, return NULl, else
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* return pointer to data past end of LSA.
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*/
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static const u_int8_t *
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ospf_print_lsa(register const struct lsa *lsap)
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{
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register const u_int8_t *ls_end;
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register const struct rlalink *rlp;
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register const struct tos_metric *tosp;
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register const struct in_addr *ap;
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register const struct aslametric *almp;
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register const struct mcla *mcp;
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register const u_int32_t *lp;
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register int j, k, tlv_type, tlv_length, subtlv_type, subtlv_length, priority_level;
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register int ls_length;
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const u_int8_t *tptr;
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int count_srlg;
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union { /* int to float conversion buffer for several subTLVs */
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float f;
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u_int32_t i;
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} bw;
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tptr = (u_int8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */
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ls_length = ospf_print_lshdr(&lsap->ls_hdr);
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if (ls_length == -1)
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return(NULL);
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ls_end = (u_int8_t *)lsap + ls_length;
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ls_length -= sizeof(struct lsa_hdr);
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switch (lsap->ls_hdr.ls_type) {
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case LS_TYPE_ROUTER:
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TCHECK(lsap->lsa_un.un_rla.rla_flags);
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printf("\n\t Router LSA Options: [%s]", bittok2str(ospf_rla_flag_values,"none",lsap->lsa_un.un_rla.rla_flags));
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TCHECK(lsap->lsa_un.un_rla.rla_count);
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j = EXTRACT_16BITS(&lsap->lsa_un.un_rla.rla_count);
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TCHECK(lsap->lsa_un.un_rla.rla_link);
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rlp = lsap->lsa_un.un_rla.rla_link;
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while (j--) {
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TCHECK(*rlp);
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switch (rlp->link_type) {
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case RLA_TYPE_VIRTUAL:
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printf("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s",
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ipaddr_string(&rlp->link_id),
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ipaddr_string(&rlp->link_data));
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break;
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case RLA_TYPE_ROUTER:
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printf("\n\t Neighbor Router-ID: %s, Interface Address: %s",
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ipaddr_string(&rlp->link_id),
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ipaddr_string(&rlp->link_data));
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break;
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case RLA_TYPE_TRANSIT:
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printf("\n\t Neighbor Network-ID: %s, Interface Address: %s",
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ipaddr_string(&rlp->link_id),
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ipaddr_string(&rlp->link_data));
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break;
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case RLA_TYPE_STUB:
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printf("\n\t Stub Network: %s, Mask: %s",
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ipaddr_string(&rlp->link_id),
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ipaddr_string(&rlp->link_data));
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break;
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default:
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printf("\n\t Unknown Router Link Type (%u)",
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rlp->link_type);
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return (ls_end);
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}
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printf(", tos 0, metric: %d", EXTRACT_16BITS(&rlp->link_tos0metric));
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tosp = (struct tos_metric *)
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((sizeof rlp->link_tos0metric) + (u_char *) rlp);
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for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) {
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TCHECK(*tosp);
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printf(", tos %d, metric: %d",
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tosp->tos_type,
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EXTRACT_16BITS(&tosp->tos_metric));
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}
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rlp = (struct rlalink *)((u_char *)(rlp + 1) +
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((rlp->link_toscount) * sizeof(*tosp)));
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}
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break;
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case LS_TYPE_NETWORK:
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TCHECK(lsap->lsa_un.un_nla.nla_mask);
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printf("\n\t Mask %s\n\t Connected Routers:",
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ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
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ap = lsap->lsa_un.un_nla.nla_router;
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while ((u_char *)ap < ls_end) {
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TCHECK(*ap);
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printf("\n\t %s", ipaddr_string(ap));
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++ap;
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}
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break;
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case LS_TYPE_SUM_IP:
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TCHECK(lsap->lsa_un.un_nla.nla_mask);
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printf("\n\t Mask %s",
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ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
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TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
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lp = lsap->lsa_un.un_sla.sla_tosmetric;
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/* suppress tos if its not supported */
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if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
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printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
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break;
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}
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while ((u_char *)lp < ls_end) {
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register u_int32_t ul;
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TCHECK(*lp);
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ul = EXTRACT_32BITS(lp);
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printf(", tos %d metric %d",
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(ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
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ul & SLA_MASK_METRIC);
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++lp;
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}
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break;
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case LS_TYPE_SUM_ABR:
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TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
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lp = lsap->lsa_un.un_sla.sla_tosmetric;
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/* suppress tos if its not supported */
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if(!((lsap->ls_hdr.ls_options)&OSPF_OPTION_T)) {
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printf(", metric: %u", EXTRACT_32BITS(lp)&SLA_MASK_METRIC);
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break;
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}
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while ((u_char *)lp < ls_end) {
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register u_int32_t ul;
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TCHECK(*lp);
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ul = EXTRACT_32BITS(lp);
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printf(", tos %d metric %d",
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(ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
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ul & SLA_MASK_METRIC);
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++lp;
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}
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break;
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case LS_TYPE_ASE:
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TCHECK(lsap->lsa_un.un_nla.nla_mask);
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printf("\n\t Mask %s",
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ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
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TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
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almp = lsap->lsa_un.un_asla.asla_metric;
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while ((u_char *)almp < ls_end) {
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register u_int32_t ul;
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TCHECK(almp->asla_tosmetric);
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ul = EXTRACT_32BITS(&almp->asla_tosmetric);
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printf(", type %d, tos %d metric:",
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(ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
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(ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS);
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if ((ul & ASLA_MASK_METRIC)==0xffffff)
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printf(" infinite");
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else
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printf(" %d", (ul & ASLA_MASK_METRIC));
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TCHECK(almp->asla_forward);
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if (almp->asla_forward.s_addr) {
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printf(", forward %s",
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ipaddr_string(&almp->asla_forward));
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}
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TCHECK(almp->asla_tag);
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if (almp->asla_tag.s_addr) {
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printf(", tag %s",
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ipaddr_string(&almp->asla_tag));
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}
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++almp;
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}
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break;
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case LS_TYPE_GROUP:
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/* Multicast extensions as of 23 July 1991 */
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mcp = lsap->lsa_un.un_mcla;
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while ((u_char *)mcp < ls_end) {
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TCHECK(mcp->mcla_vid);
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switch (EXTRACT_32BITS(&mcp->mcla_vtype)) {
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case MCLA_VERTEX_ROUTER:
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printf("\n\t Router Router-ID %s",
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ipaddr_string(&mcp->mcla_vid));
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break;
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case MCLA_VERTEX_NETWORK:
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printf("\n\t Network Designated Router %s",
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ipaddr_string(&mcp->mcla_vid));
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break;
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default:
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printf("\n\t unknown VertexType (%u)",
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EXTRACT_32BITS(&mcp->mcla_vtype));
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break;
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}
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++mcp;
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}
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break;
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case LS_TYPE_OPAQUE_LL: /* fall through */
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case LS_TYPE_OPAQUE_AL:
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case LS_TYPE_OPAQUE_DW:
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switch (*(&lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) {
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case LS_OPAQUE_TYPE_TE:
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tptr = (u_int8_t *)(&lsap->lsa_un.un_te_lsa_tlv.type);
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while (ls_length != 0) {
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TCHECK2(*tptr, 4);
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if (ls_length < 4) {
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printf("\n\t Remaining LS length %u < 4", ls_length);
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return(ls_end);
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}
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tlv_type = EXTRACT_16BITS(tptr);
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tlv_length = EXTRACT_16BITS(tptr+2);
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tptr+=4;
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ls_length-=4;
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printf("\n\t %s TLV (%u), length: %u",
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tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type),
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tlv_type,
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tlv_length);
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if (tlv_length > ls_length) {
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printf("\n\t Bogus length %u > %u", tlv_length,
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ls_length);
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return(ls_end);
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}
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ls_length-=tlv_length;
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switch(tlv_type) {
|
|
case LS_OPAQUE_TE_TLV_LINK:
|
|
while (tlv_length != 0) {
|
|
if (tlv_length < 4) {
|
|
printf("\n\t Remaining TLV length %u < 4",
|
|
tlv_length);
|
|
return(ls_end);
|
|
}
|
|
TCHECK2(*tptr, 4);
|
|
subtlv_type = EXTRACT_16BITS(tptr);
|
|
subtlv_length = EXTRACT_16BITS(tptr+2);
|
|
tptr+=4;
|
|
tlv_length-=4;
|
|
|
|
printf("\n\t %s subTLV (%u), length: %u",
|
|
tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type),
|
|
subtlv_type,
|
|
subtlv_length);
|
|
|
|
TCHECK2(*tptr, subtlv_length);
|
|
switch(subtlv_type) {
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP:
|
|
printf(", 0x%08x", EXTRACT_32BITS(tptr));
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID:
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID:
|
|
printf(", %s (0x%08x)",
|
|
ipaddr_string(tptr),
|
|
EXTRACT_32BITS(tptr));
|
|
if (subtlv_length == 8) /* draft-ietf-ccamp-ospf-gmpls-extensions */
|
|
printf(", %s (0x%08x)",
|
|
ipaddr_string(tptr+4),
|
|
EXTRACT_32BITS(tptr+4));
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP:
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP:
|
|
printf(", %s", ipaddr_string(tptr));
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW:
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW:
|
|
bw.i = EXTRACT_32BITS(tptr);
|
|
printf(", %.3f Mbps", bw.f*8/1000000 );
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW:
|
|
for (priority_level = 0; priority_level < 8; priority_level++) {
|
|
bw.i = EXTRACT_32BITS(tptr+priority_level*4);
|
|
printf("\n\t\tpriority level %d: %.3f Mbps",
|
|
priority_level,
|
|
bw.f*8/1000000 );
|
|
}
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC:
|
|
printf(", Metric %u", EXTRACT_32BITS(tptr));
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE:
|
|
printf(", %s, Priority %u",
|
|
bittok2str(gmpls_link_prot_values, "none", *tptr),
|
|
*(tptr+1));
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR:
|
|
printf("\n\t\tInterface Switching Capability: %s",
|
|
tok2str(gmpls_switch_cap_values, "Unknown", *(tptr)));
|
|
printf("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:",
|
|
tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
|
|
for (priority_level = 0; priority_level < 8; priority_level++) {
|
|
bw.i = EXTRACT_32BITS(tptr+4+(priority_level*4));
|
|
printf("\n\t\t priority level %d: %.3f Mbps",
|
|
priority_level,
|
|
bw.f*8/1000000 );
|
|
}
|
|
break;
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE:
|
|
printf(", %s (%u)",
|
|
tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",*tptr),
|
|
*tptr);
|
|
break;
|
|
|
|
case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP:
|
|
count_srlg = subtlv_length / 4;
|
|
if (count_srlg != 0)
|
|
printf("\n\t\t Shared risk group: ");
|
|
while (count_srlg > 0) {
|
|
bw.i = EXTRACT_32BITS(tptr);
|
|
printf("%d",bw.i);
|
|
tptr+=4;
|
|
count_srlg--;
|
|
if (count_srlg > 0)
|
|
printf(", ");
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (vflag <= 1) {
|
|
if(!print_unknown_data(tptr,"\n\t\t",subtlv_length))
|
|
return(ls_end);
|
|
}
|
|
break;
|
|
}
|
|
/* in OSPF everything has to be 32-bit aligned, including TLVs */
|
|
if (subtlv_length%4 != 0)
|
|
subtlv_length+=4-(subtlv_length%4);
|
|
|
|
tlv_length-=subtlv_length;
|
|
tptr+=subtlv_length;
|
|
|
|
}
|
|
break;
|
|
|
|
case LS_OPAQUE_TE_TLV_ROUTER:
|
|
if (tlv_length < 4) {
|
|
printf("\n\t TLV length %u < 4", tlv_length);
|
|
return(ls_end);
|
|
}
|
|
TCHECK2(*tptr, 4);
|
|
printf(", %s", ipaddr_string(tptr));
|
|
break;
|
|
|
|
default:
|
|
if (vflag <= 1) {
|
|
if(!print_unknown_data(tptr,"\n\t ",tlv_length))
|
|
return(ls_end);
|
|
}
|
|
break;
|
|
}
|
|
tptr+=tlv_length;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
if (vflag <= 1) {
|
|
if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown,
|
|
"\n\t ", ls_length))
|
|
return(ls_end);
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* do we want to see an additionally hexdump ? */
|
|
if (vflag> 1)
|
|
if(!print_unknown_data((u_int8_t *)lsap->lsa_un.un_unknown,
|
|
"\n\t ", ls_length)) {
|
|
return(ls_end);
|
|
}
|
|
|
|
return (ls_end);
|
|
trunc:
|
|
return (NULL);
|
|
}
|
|
|
|
static int
|
|
ospf_decode_v2(register const struct ospfhdr *op,
|
|
register const u_char *dataend)
|
|
{
|
|
register const struct in_addr *ap;
|
|
register const struct lsr *lsrp;
|
|
register const struct lsa_hdr *lshp;
|
|
register const struct lsa *lsap;
|
|
register u_int32_t lsa_count,lsa_count_max;
|
|
|
|
switch (op->ospf_type) {
|
|
|
|
case OSPF_TYPE_UMD:
|
|
/*
|
|
* Rob Coltun's special monitoring packets;
|
|
* do nothing
|
|
*/
|
|
break;
|
|
|
|
case OSPF_TYPE_HELLO:
|
|
printf("\n\tOptions: [%s]",
|
|
bittok2str(ospf_option_values,"none",op->ospf_hello.hello_options));
|
|
|
|
TCHECK(op->ospf_hello.hello_deadint);
|
|
printf("\n\t Hello Timer: %us, Dead Timer %us, Mask: %s, Priority: %u",
|
|
EXTRACT_16BITS(&op->ospf_hello.hello_helloint),
|
|
EXTRACT_32BITS(&op->ospf_hello.hello_deadint),
|
|
ipaddr_string(&op->ospf_hello.hello_mask),
|
|
op->ospf_hello.hello_priority);
|
|
|
|
TCHECK(op->ospf_hello.hello_dr);
|
|
if (op->ospf_hello.hello_dr.s_addr != 0)
|
|
printf("\n\t Designated Router %s",
|
|
ipaddr_string(&op->ospf_hello.hello_dr));
|
|
|
|
TCHECK(op->ospf_hello.hello_bdr);
|
|
if (op->ospf_hello.hello_bdr.s_addr != 0)
|
|
printf(", Backup Designated Router %s",
|
|
ipaddr_string(&op->ospf_hello.hello_bdr));
|
|
|
|
ap = op->ospf_hello.hello_neighbor;
|
|
if ((u_char *)ap < dataend)
|
|
printf("\n\t Neighbor List:");
|
|
while ((u_char *)ap < dataend) {
|
|
TCHECK(*ap);
|
|
printf("\n\t %s", ipaddr_string(ap));
|
|
++ap;
|
|
}
|
|
break; /* HELLO */
|
|
|
|
case OSPF_TYPE_DD:
|
|
TCHECK(op->ospf_db.db_options);
|
|
printf("\n\tOptions: [%s]",
|
|
bittok2str(ospf_option_values,"none",op->ospf_db.db_options));
|
|
TCHECK(op->ospf_db.db_flags);
|
|
printf(", DD Flags: [%s]",
|
|
bittok2str(ospf_dd_flag_values,"none",op->ospf_db.db_flags));
|
|
|
|
if (vflag) {
|
|
/* Print all the LS adv's */
|
|
lshp = op->ospf_db.db_lshdr;
|
|
while (ospf_print_lshdr(lshp) != -1) {
|
|
++lshp;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OSPF_TYPE_LS_REQ:
|
|
lsrp = op->ospf_lsr;
|
|
while ((u_char *)lsrp < dataend) {
|
|
TCHECK(*lsrp);
|
|
|
|
printf("\n\t Advertising Router: %s, %s LSA (%u)",
|
|
ipaddr_string(&lsrp->ls_router),
|
|
tok2str(lsa_values,"unknown",EXTRACT_32BITS(lsrp->ls_type)),
|
|
EXTRACT_32BITS(&lsrp->ls_type));
|
|
|
|
switch (EXTRACT_32BITS(lsrp->ls_type)) {
|
|
/* the LSA header for opaque LSAs was slightly changed */
|
|
case LS_TYPE_OPAQUE_LL:
|
|
case LS_TYPE_OPAQUE_AL:
|
|
case LS_TYPE_OPAQUE_DW:
|
|
printf(", Opaque-Type: %s LSA (%u), Opaque-ID: %u",
|
|
tok2str(lsa_opaque_values, "unknown",lsrp->un_ls_stateid.opaque_field.opaque_type),
|
|
lsrp->un_ls_stateid.opaque_field.opaque_type,
|
|
EXTRACT_24BITS(&lsrp->un_ls_stateid.opaque_field.opaque_id));
|
|
break;
|
|
default:
|
|
printf(", LSA-ID: %s",
|
|
ipaddr_string(&lsrp->un_ls_stateid.ls_stateid));
|
|
break;
|
|
}
|
|
|
|
++lsrp;
|
|
}
|
|
break;
|
|
|
|
case OSPF_TYPE_LS_UPDATE:
|
|
lsap = op->ospf_lsu.lsu_lsa;
|
|
TCHECK(op->ospf_lsu.lsu_count);
|
|
lsa_count_max = EXTRACT_32BITS(&op->ospf_lsu.lsu_count);
|
|
printf(", %d LSA%s",lsa_count_max, lsa_count_max > 1 ? "s" : "");
|
|
for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) {
|
|
printf("\n\t LSA #%u",lsa_count);
|
|
lsap = (const struct lsa *)ospf_print_lsa(lsap);
|
|
if (lsap == NULL)
|
|
goto trunc;
|
|
}
|
|
break;
|
|
|
|
case OSPF_TYPE_LS_ACK:
|
|
lshp = op->ospf_lsa.lsa_lshdr;
|
|
while (ospf_print_lshdr(lshp) != -1) {
|
|
++lshp;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
printf("v2 type (%d)", op->ospf_type);
|
|
break;
|
|
}
|
|
return (0);
|
|
trunc:
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
ospf_print(register const u_char *bp, register u_int length,
|
|
register const u_char *bp2)
|
|
{
|
|
register const struct ospfhdr *op;
|
|
register const struct ip *ip;
|
|
register const u_char *dataend;
|
|
register const char *cp;
|
|
|
|
op = (struct ospfhdr *)bp;
|
|
ip = (struct ip *)bp2;
|
|
|
|
/* XXX Before we do anything else, strip off the MD5 trailer */
|
|
TCHECK(op->ospf_authtype);
|
|
if (EXTRACT_16BITS(&op->ospf_authtype) == OSPF_AUTH_MD5) {
|
|
length -= OSPF_AUTH_MD5_LEN;
|
|
snapend -= OSPF_AUTH_MD5_LEN;
|
|
}
|
|
|
|
/* If the type is valid translate it, or just print the type */
|
|
/* value. If it's not valid, say so and return */
|
|
TCHECK(op->ospf_type);
|
|
cp = tok2str(type2str, "unknown LS-type", op->ospf_type);
|
|
printf("OSPFv%u, %s (%u), length: %u",
|
|
op->ospf_version,
|
|
cp,
|
|
op->ospf_type,
|
|
length);
|
|
if (*cp == 'u')
|
|
return;
|
|
|
|
if(!vflag) /* non verbose - so lets bail out here */
|
|
return;
|
|
|
|
TCHECK(op->ospf_len);
|
|
if (length != EXTRACT_16BITS(&op->ospf_len)) {
|
|
printf(" [len %d]", EXTRACT_16BITS(&op->ospf_len));
|
|
return;
|
|
}
|
|
dataend = bp + length;
|
|
|
|
TCHECK(op->ospf_routerid);
|
|
printf("\n\tRouter-ID: %s", ipaddr_string(&op->ospf_routerid));
|
|
|
|
TCHECK(op->ospf_areaid);
|
|
if (op->ospf_areaid.s_addr != 0)
|
|
printf(", Area %s", ipaddr_string(&op->ospf_areaid));
|
|
else
|
|
printf(", Backbone Area");
|
|
|
|
if (vflag) {
|
|
/* Print authentication data (should we really do this?) */
|
|
TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata));
|
|
|
|
printf(", Authentication Type: %s (%u)",
|
|
tok2str(ospf_authtype_values,"unknown",EXTRACT_16BITS(&op->ospf_authtype)),
|
|
EXTRACT_16BITS(&op->ospf_authtype));
|
|
|
|
switch (EXTRACT_16BITS(&op->ospf_authtype)) {
|
|
|
|
case OSPF_AUTH_NONE:
|
|
break;
|
|
|
|
case OSPF_AUTH_SIMPLE:
|
|
(void)fn_printn(op->ospf_authdata,
|
|
sizeof(op->ospf_authdata), NULL);
|
|
printf("\"");
|
|
break;
|
|
|
|
case OSPF_AUTH_MD5:
|
|
printf("\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x",
|
|
*((op->ospf_authdata)+2),
|
|
*((op->ospf_authdata)+3),
|
|
EXTRACT_32BITS((op->ospf_authdata)+4));
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
/* Do rest according to version. */
|
|
switch (op->ospf_version) {
|
|
|
|
case 2:
|
|
/* ospf version 2 */
|
|
if (ospf_decode_v2(op, dataend))
|
|
goto trunc;
|
|
break;
|
|
|
|
default:
|
|
printf(" ospf [version %d]", op->ospf_version);
|
|
break;
|
|
} /* end switch on version */
|
|
|
|
return;
|
|
trunc:
|
|
fputs(tstr, stdout);
|
|
}
|