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- /*
- * Copyright (c) 1992, 1993, 1994
- * 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 char rcsid[] =
- "@(#) $Header: print-ospf.c,v 1.12 94/06/14 20:18:46 leres Exp $ (LBL)";
- #endif
-
- #include <sys/param.h>
- #include <sys/time.h>
- #include <sys/socket.h>
-
- #include <netinet/in.h>
- #include <netinet/in_systm.h>
- #include <netinet/ip.h>
- #include <netinet/ip_var.h>
-
- #include <errno.h>
- #include <ctype.h>
- #include <stdio.h>
-
- #include "interface.h"
- #include "addrtoname.h"
-
- #include "ospf.h"
-
- #ifndef __GNUC__
- #define inline
- #endif
-
- struct bits {
- u_int32 bit;
- const char *str;
- };
-
- static const struct bits ospf_option_bits[] = {
- { OSPF_OPTION_T, "T" },
- { OSPF_OPTION_E, "E" },
- { OSPF_OPTION_MC, "MC" },
- { 0, NULL }
- };
-
- static const struct bits ospf_rla_flag_bits[] = {
- { RLA_FLAG_B, "B" },
- { RLA_FLAG_E, "E" },
- { RLA_FLAG_W1, "W1" },
- { RLA_FLAG_W2, "W2" },
- { 0, NULL }
- };
-
- static const char *ospf_types[OSPF_TYPE_MAX] = {
- (char *) 0,
- "hello",
- "dd",
- "ls_req",
- "ls_upd",
- "ls_ack"
- };
-
- static inline void
- ospf_print_seqage(register u_int32 seq, register time_t us)
- {
- register time_t sec = us % 60;
- register time_t mins = (us / 60) % 60;
- register time_t hour = us/3600;
-
- printf(" S %X age ",
- seq);
- if (hour) {
- printf("%d:%02d:%02d",
- hour,
- mins,
- sec);
- } else if (mins) {
- printf("%d:%02d",
- mins,
- sec);
- } else {
- printf("%d",
- sec);
- }
- }
-
-
- static inline void
- ospf_print_bits(register const struct bits *bp, register u_char options)
- {
- char sep = ' ';
-
- do {
- if (options & bp->bit) {
- printf("%c%s",
- sep,
- bp->str);
- sep = '/';
- }
- } while ((++bp)->bit) ;
- }
-
-
- #define LS_PRINT(lsp, type) switch (type) { \
- case LS_TYPE_ROUTER: \
- printf(" rtr %s ", ipaddr_string(&lsp->ls_router)); break; \
- case LS_TYPE_NETWORK: \
- printf(" net dr %s if %s", ipaddr_string(&lsp->ls_router), ipaddr_string(&lsp->ls_stateid)); break; \
- case LS_TYPE_SUM_IP: \
- printf(" sum %s abr %s", ipaddr_string(&lsp->ls_stateid), ipaddr_string(&lsp->ls_router)); break; \
- case LS_TYPE_SUM_ABR: \
- printf(" abr %s rtr %s", ipaddr_string(&lsp->ls_router), ipaddr_string(&lsp->ls_stateid)); break; \
- case LS_TYPE_ASE: \
- printf(" ase %s asbr %s", ipaddr_string(&lsp->ls_stateid), ipaddr_string(&lsp->ls_router)); break; \
- case LS_TYPE_GROUP: \
- printf(" group %s rtr %s", ipaddr_string(&lsp->ls_stateid), ipaddr_string(&lsp->ls_router)); break; \
- }
-
- static int
- ospf_print_lshdr(register const struct lsa_hdr *lshp, const caddr_t end)
- {
- if ((caddr_t) (lshp + 1) > end) {
- return 1;
- }
-
- printf(" {"); /* } (ctags) */
-
- if (!lshp->ls_type || lshp->ls_type >= LS_TYPE_MAX) {
- printf(" ??LS type %d?? }", /* { (ctags) */
- lshp->ls_type);
- return 1;
- }
-
- ospf_print_bits(ospf_option_bits, lshp->ls_options);
- ospf_print_seqage(ntohl(lshp->ls_seq),
- ntohs(lshp->ls_age));
-
- LS_PRINT(lshp, lshp->ls_type);
-
- return 0;
- }
-
-
- /*
- * Print a single link state advertisement. If truncated return 1, else 0.
- */
-
- static int
- ospf_print_lsa(register const struct lsa *lsap, const caddr_t end)
- {
- register const char *ls_end;
- const struct rlalink *rlp;
- const struct tos_metric *tosp;
- const struct in_addr *ap;
- const struct aslametric *almp;
- const struct mcla *mcp;
- const u_int32 *lp;
- int j, k;
-
- if (ospf_print_lshdr(&lsap->ls_hdr, end)) {
- return 1;
- }
-
- ls_end = (caddr_t) lsap + ntohs(lsap->ls_hdr.ls_length);
-
- if (ls_end > end) {
- printf(" }"); /* { (ctags) */
- return 1;
- }
-
- switch (lsap->ls_hdr.ls_type) {
- case LS_TYPE_ROUTER:
- ospf_print_bits(ospf_rla_flag_bits, lsap->lsa_un.un_rla.rla_flags);
-
- j = ntohs(lsap->lsa_un.un_rla.rla_count);
- rlp = lsap->lsa_un.un_rla.rla_link;
- while (j--) {
- struct rlalink *rln = (struct rlalink *) ((caddr_t) (rlp + 1) + ((rlp->link_toscount) * sizeof (struct tos_metric)));
-
- if ((caddr_t) rln > ls_end) {
- break;
- }
- printf(" {"); /* } (ctags) */
-
- switch (rlp->link_type) {
- case RLA_TYPE_VIRTUAL:
- printf(" virt");
- /* Fall through */
-
- case RLA_TYPE_ROUTER:
- printf(" nbrid %s if %s",
- ipaddr_string(&rlp->link_id),
- ipaddr_string(&rlp->link_data));
- break;
-
- case RLA_TYPE_TRANSIT:
- printf(" dr %s if %s",
- ipaddr_string(&rlp->link_id),
- ipaddr_string(&rlp->link_data));
- break;
-
- case RLA_TYPE_STUB:
- printf(" net %s mask %s",
- ipaddr_string(&rlp->link_id),
- ipaddr_string(&rlp->link_data));
- break;
-
- default:
- printf(" ??RouterLinksType %d?? }", /* { (ctags) */
- rlp->link_type);
- return 0;
- }
- printf(" tos 0 metric %d",
- ntohs(rlp->link_tos0metric));
- tosp = (struct tos_metric *) ((sizeof rlp->link_tos0metric) + (caddr_t) rlp);
- for (k = 0; k < rlp->link_toscount; k++, tosp++) {
- printf(" tos %d metric %d",
- ntohs(tosp->tos_type),
- ntohs(tosp->tos_metric));
- }
- printf(" }"); /* { (ctags) */
- rlp = rln;
- }
- break;
-
- case LS_TYPE_NETWORK:
- printf(" mask %s rtrs",
- ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
- for (ap = lsap->lsa_un.un_nla.nla_router;
- (caddr_t) (ap + 1) <= ls_end;
- ap++) {
- printf(" %s",
- ipaddr_string(ap));
- }
- break;
-
- case LS_TYPE_SUM_IP:
- printf(" mask %s",
- ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
- /* Fall through */
-
- case LS_TYPE_SUM_ABR:
-
- for (lp = lsap->lsa_un.un_sla.sla_tosmetric;
- (caddr_t) (lp + 1) <= ls_end;
- lp++) {
- u_int32 ul = ntohl(*lp);
-
- printf(" tos %d metric %d",
- (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
- ul & SLA_MASK_METRIC);
- }
- break;
-
- case LS_TYPE_ASE:
- printf(" mask %s",
- ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
-
- for (almp = lsap->lsa_un.un_asla.asla_metric;
- (caddr_t) (almp + 1) <= ls_end;
- almp++) {
- u_int32 ul = ntohl(almp->asla_tosmetric);
-
- printf(" type %d tos %d metric %d",
- (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
- (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS,
- (ul & ASLA_MASK_METRIC));
- if (almp->asla_forward.s_addr) {
- printf(" forward %s",
- ipaddr_string(&almp->asla_forward));
- }
- if (almp->asla_tag.s_addr) {
- printf(" tag %s",
- ipaddr_string(&almp->asla_tag));
- }
- }
- break;
-
- case LS_TYPE_GROUP:
- /* Multicast extensions as of 23 July 1991 */
- for (mcp = lsap->lsa_un.un_mcla;
- (caddr_t) (mcp + 1) <= ls_end;
- mcp++) {
- switch (ntohl(mcp->mcla_vtype)) {
- case MCLA_VERTEX_ROUTER:
- printf(" rtr rtrid %s",
- ipaddr_string(&mcp->mcla_vid));
- break;
-
- case MCLA_VERTEX_NETWORK:
- printf(" net dr %s",
- ipaddr_string(&mcp->mcla_vid));
- break;
-
- default:
- printf(" ??VertexType %d??",
- ntohl(mcp->mcla_vtype));
- break;
- }
- }
- }
-
- printf(" }"); /* { (ctags) */
- return 0;
- }
-
-
- void
- ospf_print(register const u_char *bp, register int length,
- register const u_char *bp2)
- {
- register const struct ospfhdr *op;
- register const struct ip *ip;
- register const caddr_t end = (caddr_t)snapend;
- register const struct lsa *lsap;
- register const struct lsa_hdr *lshp;
- char sep;
- int i, j;
- const struct in_addr *ap;
- const struct lsr *lsrp;
-
- op = (struct ospfhdr *)bp;
- ip = (struct ip *)bp2;
- /* Print the source and destination address */
- (void) printf("%s > %s:",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
-
- if ((caddr_t) (&op->ospf_len + 1) > end) {
- goto trunc_test;
- }
-
- /* If the type is valid translate it, or just print the type */
- /* value. If it's not valid, say so and return */
- if (op->ospf_type || op->ospf_type < OSPF_TYPE_MAX) {
- printf(" OSPFv%d-%s %d:",
- op->ospf_version,
- ospf_types[op->ospf_type],
- length);
- } else {
- printf(" ospf-v%d-??type %d?? %d:",
- op->ospf_version,
- op->ospf_type,
- length);
- return;
- }
-
- if (length != ntohs(op->ospf_len)) {
- printf(" ??len %d??",
- ntohs(op->ospf_len));
- goto trunc_test;
- }
-
- if ((caddr_t) (&op->ospf_routerid + 1) > end) {
- goto trunc_test;
- }
-
- /* Print the routerid if it is not the same as the source */
- if (ip->ip_src.s_addr != op->ospf_routerid.s_addr) {
- printf(" rtrid %s",
- ipaddr_string(&op->ospf_routerid));
- }
-
- if ((caddr_t) (&op->ospf_areaid + 1) > end) {
- goto trunc_test;
- }
-
- if (op->ospf_areaid.s_addr) {
- printf(" area %s",
- ipaddr_string(&op->ospf_areaid));
- } else {
- printf(" backbone");
- }
-
- if ((caddr_t) (op->ospf_authdata + OSPF_AUTH_SIZE) > end) {
- goto trunc_test;
- }
-
- if (vflag) {
- /* Print authentication data (should we really do this?) */
- switch (ntohs(op->ospf_authtype)) {
- case OSPF_AUTH_NONE:
- break;
-
- case OSPF_AUTH_SIMPLE:
- printf(" auth ");
- j = 0;
- for (i = 0; i < sizeof (op->ospf_authdata); i++) {
- if (!isprint(op->ospf_authdata[i])) {
- j = 1;
- break;
- }
- }
- if (j) {
- /* Print the auth-data as a string of octets */
- printf("%s.%s",
- ipaddr_string((struct in_addr *) op->ospf_authdata),
- ipaddr_string((struct in_addr *) &op->ospf_authdata[sizeof (struct in_addr)]));
- } else {
- /* Print the auth-data as a text string */
- printf("'%.8s'",
- op->ospf_authdata);
- }
- break;
-
- default:
- printf(" ??authtype-%d??",
- ntohs(op->ospf_authtype));
- return;
- }
- }
-
-
- /* Do rest according to version. */
- switch (op->ospf_version) {
- case 2:
- /* ospf version 2 */
- switch (op->ospf_type) {
- case OSPF_TYPE_UMD: /* Rob Coltun's special monitoring packets; do nothing */
- break;
-
- case OSPF_TYPE_HELLO:
- if ((caddr_t) (&op->ospf_hello.hello_deadint + 1) > end) {
- break;
- }
- if (vflag) {
- ospf_print_bits(ospf_option_bits, op->ospf_hello.hello_options);
- printf(" mask %s int %d pri %d dead %d",
- ipaddr_string(&op->ospf_hello.hello_mask),
- ntohs(op->ospf_hello.hello_helloint),
- op->ospf_hello.hello_priority,
- ntohl(op->ospf_hello.hello_deadint));
- }
-
- if ((caddr_t) (&op->ospf_hello.hello_dr + 1) > end) {
- break;
- }
- if (op->ospf_hello.hello_dr.s_addr) {
- printf(" dr %s",
- ipaddr_string(&op->ospf_hello.hello_dr));
- }
-
- if ((caddr_t) (&op->ospf_hello.hello_bdr + 1) > end) {
- break;
- }
- if (op->ospf_hello.hello_bdr.s_addr) {
- printf(" bdr %s",
- ipaddr_string(&op->ospf_hello.hello_bdr));
- }
-
- if (vflag) {
- if ((caddr_t) (op->ospf_hello.hello_neighbor + 1) > end) {
- break;
- }
- printf(" nbrs");
- for (ap = op->ospf_hello.hello_neighbor;
- (caddr_t) (ap + 1) <= end;
- ap++) {
- printf(" %s",
- ipaddr_string(ap));
- }
- }
- break; /* HELLO */
-
- case OSPF_TYPE_DB:
- if ((caddr_t) (&op->ospf_db.db_seq + 1) > end) {
- break;
- }
- ospf_print_bits(ospf_option_bits, op->ospf_db.db_options);
- sep = ' ';
- if (op->ospf_db.db_flags & OSPF_DB_INIT) {
- printf("%cI",
- sep);
- sep = '/';
- }
- if (op->ospf_db.db_flags & OSPF_DB_MORE) {
- printf("%cM",
- sep);
- sep = '/';
- }
- if (op->ospf_db.db_flags & OSPF_DB_MASTER) {
- printf("%cMS",
- sep);
- sep = '/';
- }
- printf(" S %X",
- ntohl(op->ospf_db.db_seq));
-
- if (vflag) {
- /* Print all the LS adv's */
- lshp = op->ospf_db.db_lshdr;
-
- while (!ospf_print_lshdr(lshp, end)) {
- printf(" }"); /* { (ctags) */
- lshp++;
- }
- }
- break;
-
- case OSPF_TYPE_LSR:
- if (vflag) {
- for (lsrp = op->ospf_lsr; (caddr_t) (lsrp+1) <= end; lsrp++) {
- int32 type;
-
- if ((caddr_t) (lsrp + 1) > end) {
- break;
- }
-
- printf(" {"); /* } (ctags) */
- if (!(type = lsrp->ls_type) || type >= LS_TYPE_MAX) {
- printf(" ??LinkStateType %d }", /* { (ctags) */
- type);
- printf(" }"); /* { (ctags) */
- break;
- }
-
- LS_PRINT(lsrp, type);
- printf(" }"); /* { (ctags) */
- }
- }
- break;
-
- case OSPF_TYPE_LSU:
- if (vflag) {
- lsap = op->ospf_lsu.lsu_lsa;
- i = ntohl(op->ospf_lsu.lsu_count);
-
- while (i-- &&
- !ospf_print_lsa(lsap, end)) {
- lsap = (struct lsa *) ((caddr_t) lsap + ntohs(lsap->ls_hdr.ls_length));
- }
- }
- break;
-
-
- case OSPF_TYPE_LSA:
- if (vflag) {
- lshp = op->ospf_lsa.lsa_lshdr;
-
- while (!ospf_print_lshdr(lshp, end)) {
- printf(" }"); /* { (ctags) */
- lshp++;
- }
- break;
- }
- } /* end switch on v2 packet type */
- break;
-
- default:
- printf(" ospf [version %d]",
- op->ospf_version);
- break;
- } /* end switch on version */
-
- trunc_test:
- if ((snapend - bp) < length) {
- printf(" [|]");
- }
-
- return; /* from ospf_print */
- }
-