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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/tcpdump/print-ospf.c	Lines:	0	265	0.0 %
Date:	2017-11-07	Branches:	0	257	0.0 %


/*	$OpenBSD: print-ospf.c,v 1.20 2015/11/16 00:16:39 mmcc Exp $	*/

/*
 * 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)
 */

#include <sys/time.h>
#include <sys/socket.h>

#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>

#include <ctype.h>
#include <stdio.h>

#include "interface.h"
#include "addrtoname.h"

#include "ospf.h"

struct bits {
	u_int32_t 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 struct tok type2str[] = {
	{ OSPF_TYPE_UMD,	"umd" },
	{ OSPF_TYPE_HELLO,	"hello" },
	{ OSPF_TYPE_DB,		"dd" },
	{ OSPF_TYPE_LSR,	"ls_req" },
	{ OSPF_TYPE_LSU,	"ls_upd" },
	{ OSPF_TYPE_LSA,	"ls_ack" },
	{ 0,			NULL }
};

static char tstr[] = " [|ospf]";

/* Forwards */
static inline void ospf_print_seqage(u_int32_t, time_t);
static inline void ospf_print_bits(const struct bits *, u_char);
static void ospf_print_ls_type(u_int, const struct in_addr *,
    const struct in_addr *, const char *);
static int ospf_print_lshdr(const struct lsa_hdr *);
static int ospf_print_lsa(const struct lsa *);
static int ospf_decode_v2(const struct ospfhdr *, const u_char *);

static inline void
ospf_print_seqage(u_int32_t seq, time_t us)
{
	time_t sec = us % 60;
	time_t mins = (us / 60) % 60;
	time_t hour = us / 3600;

	printf(" S %X age ", seq);
	if (hour)
		printf("%u:%02u:%02u",
		    (u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
	else if (mins)
		printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
	else
		printf("%u", (u_int32_t) sec);
}


static inline void
ospf_print_bits(const struct bits *bp, u_char options)
{
	char sep = ' ';

	do {
		if (options & bp->bit) {
			printf("%c%s", sep, bp->str);
			sep = '/';
		}
	} while ((++bp)->bit);
}

static void
ospf_print_ls_type(u_int ls_type, const struct in_addr *ls_stateid,
    const struct in_addr *ls_router, const char *fmt)
{

	switch (ls_type) {

	case LS_TYPE_ROUTER:
		printf(" rtr %s", ipaddr_string(ls_router));
		break;

	case LS_TYPE_NETWORK:
		printf(" net dr %s if %s",
		    ipaddr_string(ls_router),
		    ipaddr_string(ls_stateid));
		break;

	case LS_TYPE_SUM_IP:
		printf(" sum %s abr %s",
		    ipaddr_string(ls_stateid),
		    ipaddr_string(ls_router));
		break;

	case LS_TYPE_SUM_ABR:
		printf(" abr %s rtr %s",
		    ipaddr_string(ls_router),
		    ipaddr_string(ls_stateid));
		break;

	case LS_TYPE_ASE:
		printf(" ase %s asbr %s",
		    ipaddr_string(ls_stateid),
		    ipaddr_string(ls_router));
		break;

	case LS_TYPE_GROUP:
		printf(" group %s rtr %s",
		    ipaddr_string(ls_stateid),
		    ipaddr_string(ls_router));
		break;

	default:
		putchar(' ');
		printf(fmt, ls_type);
		break;
	}
}

static int
ospf_print_lshdr(const struct lsa_hdr *lshp)
{

	TCHECK(lshp->ls_type);
	printf(" {");						/* } (ctags) */

	TCHECK(lshp->ls_options);
	ospf_print_bits(ospf_option_bits, lshp->ls_options);
	TCHECK(lshp->ls_seq);
	ospf_print_seqage(ntohl(lshp->ls_seq), ntohs(lshp->ls_age));
	ospf_print_ls_type(lshp->ls_type, &lshp->ls_stateid, &lshp->ls_router,
	    "ls_type %d");

	return (0);
trunc:
	return (1);
}


/*
 * Print a single link state advertisement.  If truncated return 1, else 0.
 */
static int
ospf_print_lsa(const struct lsa *lsap)
{
	const u_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_t *lp;
	int j, k;

	if (ospf_print_lshdr(&lsap->ls_hdr))
		return (1);
	TCHECK(lsap->ls_hdr.ls_length);
	ls_end = (u_char *)lsap + ntohs(lsap->ls_hdr.ls_length);
	switch (lsap->ls_hdr.ls_type) {

	case LS_TYPE_ROUTER:
		TCHECK(lsap->lsa_un.un_rla.rla_flags);
		ospf_print_bits(ospf_rla_flag_bits,
		    lsap->lsa_un.un_rla.rla_flags);

		TCHECK(lsap->lsa_un.un_rla.rla_count);
		j = ntohs(lsap->lsa_un.un_rla.rla_count);
		TCHECK(lsap->lsa_un.un_rla.rla_link);
		rlp = lsap->lsa_un.un_rla.rla_link;
		while (j--) {
			TCHECK(*rlp);
			printf(" {");				/* } (ctags) */
			switch (rlp->link_type) {

			case RLA_TYPE_VIRTUAL:
				printf(" virt");
				/* FALLTHROUGH */

			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:
								/* { (ctags) */
				printf(" ??RouterLinksType %d?? }",
				    rlp->link_type);
				return (0);
			}
			printf(" tos 0 metric %d", ntohs(rlp->link_tos0metric));
			tosp = (struct tos_metric *)
			    ((sizeof rlp->link_tos0metric) + (u_char *) rlp);
			for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) {
				TCHECK(*tosp);
				printf(" tos %d metric %d",
				    tosp->tos_type,
				    ntohs(tosp->tos_metric));
			}
								/* { (ctags) */
			printf(" }");
			rlp = (struct rlalink *)((u_char *)(rlp + 1) +
			    ((rlp->link_toscount) * sizeof(*tosp)));
		}
		break;

	case LS_TYPE_NETWORK:
		TCHECK(lsap->lsa_un.un_nla.nla_mask);
		printf(" mask %s rtrs",
		    ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
		ap = lsap->lsa_un.un_nla.nla_router;
		while ((u_char *)ap < ls_end) {
			TCHECK(*ap);
			printf(" %s", ipaddr_string(ap));
			++ap;
		}
		break;

	case LS_TYPE_SUM_IP:
		TCHECK(lsap->lsa_un.un_nla.nla_mask);
		printf(" mask %s",
		    ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
		/* FALLTHROUGH */

	case LS_TYPE_SUM_ABR:
		TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
		lp = lsap->lsa_un.un_sla.sla_tosmetric;
		while ((u_char *)lp < ls_end) {
			u_int32_t ul;

			TCHECK(*lp);
			ul = ntohl(*lp);
			printf(" tos %d metric %d",
			    (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
			    ul & SLA_MASK_METRIC);
			++lp;
		}
		break;

	case LS_TYPE_ASE:
		TCHECK(lsap->lsa_un.un_nla.nla_mask);
		printf(" mask %s",
		    ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));

		TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
		almp = lsap->lsa_un.un_asla.asla_metric;
		while ((u_char *)almp < ls_end) {
			u_int32_t ul;

			TCHECK(almp->asla_tosmetric);
			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));
			TCHECK(almp->asla_forward);
			if (almp->asla_forward.s_addr) {
				printf(" forward %s",
				    ipaddr_string(&almp->asla_forward));
			}
			TCHECK(almp->asla_tag);
			if (almp->asla_tag) {
				printf(" tag %u",
				    ntohl(almp->asla_tag));
			}
			++almp;
		}
		break;

	case LS_TYPE_GROUP:
		/* Multicast extensions as of 23 July 1991 */
		mcp = lsap->lsa_un.un_mcla;
		while ((u_char *)mcp < ls_end) {
			TCHECK(mcp->mcla_vid);
			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 %u??",
				    (u_int32_t)ntohl(mcp->mcla_vtype));
				break;
			}
		++mcp;
		}
	}

								/* { (ctags) */
	fputs(" }", stdout);
	return (0);
trunc:
	fputs(" }", stdout);
	return (1);
}

static int
ospf_decode_v2(const struct ospfhdr *op, const u_char *dataend)
{
	const struct in_addr *ap;
	const struct lsr *lsrp;
	const struct lsa_hdr *lshp;
	const struct lsa *lsap;
	char sep;
	int i;

	switch (op->ospf_type) {

	case OSPF_TYPE_UMD:
		/*
		 * Rob Coltun's special monitoring packets;
		 * do nothing
		 */
		break;

	case OSPF_TYPE_HELLO:
		if (vflag) {
			TCHECK(op->ospf_hello.hello_deadint);
			ospf_print_bits(ospf_option_bits,
			    op->ospf_hello.hello_options);
			printf(" mask %s int %d pri %d dead %u",
			    ipaddr_string(&op->ospf_hello.hello_mask),
			    ntohs(op->ospf_hello.hello_helloint),
			    op->ospf_hello.hello_priority,
			    (u_int32_t)ntohl(op->ospf_hello.hello_deadint));
		}
		TCHECK(op->ospf_hello.hello_dr);
		if (op->ospf_hello.hello_dr.s_addr != 0)
			printf(" dr %s",
			    ipaddr_string(&op->ospf_hello.hello_dr));
		TCHECK(op->ospf_hello.hello_bdr);
		if (op->ospf_hello.hello_bdr.s_addr != 0)
			printf(" bdr %s",
			    ipaddr_string(&op->ospf_hello.hello_bdr));
		if (vflag) {
			printf(" nbrs");
			ap = op->ospf_hello.hello_neighbor;
			while ((u_char *)ap < dataend) {
				TCHECK(*ap);
				printf(" %s", ipaddr_string(ap));
				++ap;
			}
		}
		break;	/* HELLO */

	case OSPF_TYPE_DB:
		TCHECK(op->ospf_db.db_options);
		ospf_print_bits(ospf_option_bits, op->ospf_db.db_options);
		sep = ' ';
		TCHECK(op->ospf_db.db_flags);
		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 = '/';
		}
		TCHECK(op->ospf_db.db_seq);
		printf(" mtu %u S %X", ntohs(op->ospf_db.db_mtu),
		    (u_int32_t)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)) {
							/* { (ctags) */
				printf(" }");
				++lshp;
			}
		}
		break;

	case OSPF_TYPE_LSR:
		if (vflag) {
			lsrp = op->ospf_lsr;
			while ((u_char *)lsrp < dataend) {
				TCHECK(*lsrp);
				printf(" {");		/* } (ctags) */
				ospf_print_ls_type(ntohl(lsrp->ls_type),
				    &lsrp->ls_stateid,
				    &lsrp->ls_router,
				    "LinkStateType %d");
							/* { (ctags) */
				printf(" }");
				++lsrp;
			}
		}
		break;

	case OSPF_TYPE_LSU:
		if (vflag) {
			lsap = op->ospf_lsu.lsu_lsa;
			TCHECK(op->ospf_lsu.lsu_count);
			i = ntohl(op->ospf_lsu.lsu_count);
			while (i--) {
				if (ospf_print_lsa(lsap))
					goto trunc;
				lsap = (struct lsa *)((u_char *)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)) {
							/* { (ctags) */
				printf(" }");
				++lshp;
			}
		}
		break;

	default:
		printf("v2 type %d", op->ospf_type);
		break;
	}
	return (0);
trunc:
	return (1);
}

void
ospf_print(const u_char *bp, u_int length, const u_char *bp2)
{
	const struct ospfhdr *op;
	const struct ip *ip;
	const u_char *dataend;
	const char *cp;

	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));

        /* XXX Before we do anything else, strip off the MD5 trailer */
        TCHECK(op->ospf_authtype);
        if (ntohs(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, "type%d", op->ospf_type);
	printf(" OSPFv%d-%s ", op->ospf_version, cp);
	if (*cp == 't')
		return;

	TCHECK(op->ospf_len);
	if (length < ntohs(op->ospf_len)) {
		printf(" [len %d]", ntohs(op->ospf_len));
		return;
	} else if (length > ntohs(op->ospf_len)) {
		printf(" %d[%d]:", ntohs(op->ospf_len), length);
		length = ntohs(op->ospf_len);
	} else
		printf(" %d:", length);
	dataend = bp + length;

	TCHECK(op->ospf_routerid);
	printf(" rtrid %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");

	if (vflag) {
		/* Print authentication data (should we really do this?) */
		TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata));
		switch (ntohs(op->ospf_authtype)) {

		case OSPF_AUTH_NONE:
			break;

		case OSPF_AUTH_SIMPLE:
			printf(" auth \"");
			(void)fn_printn(op->ospf_authdata,
			    sizeof(op->ospf_authdata), NULL);
			printf("\"");
			break;

		case OSPF_AUTH_MD5:
			printf(" auth MD5");
			break;

		default:
			printf(" ??authtype-%d??", ntohs(op->ospf_authtype));
			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);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: print-ospf.c,v 1.20 2015/11/16 00:16:39 mmcc Exp $ */
2
3			/*
4			* Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
5			* The Regents of the University of California. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that: (1) source code distributions
9			* retain the above copyright notice and this paragraph in its entirety, (2)
10			* distributions including binary code include the above copyright notice and
11			* this paragraph in its entirety in the documentation or other materials
12			* provided with the distribution, and (3) all advertising materials mentioning
13			* features or use of this software display the following acknowledgement:
14			* ``This product includes software developed by the University of California,
15			* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16			* the University nor the names of its contributors may be used to endorse
17			* or promote products derived from this software without specific prior
18			* written permission.
19			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20			* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21			* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22			*
23			* OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
24			*/
25
26			#include <sys/time.h>
27			#include <sys/socket.h>
28
29			#include <netinet/in.h>
30			#include <netinet/ip.h>
31			#include <netinet/ip_var.h>
32
33			#include <ctype.h>
34			#include <stdio.h>
35
36			#include "interface.h"
37			#include "addrtoname.h"
38
39			#include "ospf.h"
40
41			struct bits {
42			u_int32_t bit;
43			const char *str;
44			};
45
46			static const struct bits ospf_option_bits[] = {
47			{ OSPF_OPTION_T, "T" },
48			{ OSPF_OPTION_E, "E" },
49			{ OSPF_OPTION_MC, "MC" },
50			{ 0, NULL }
51			};
52
53			static const struct bits ospf_rla_flag_bits[] = {
54			{ RLA_FLAG_B, "B" },
55			{ RLA_FLAG_E, "E" },
56			{ RLA_FLAG_W1, "W1" },
57			{ RLA_FLAG_W2, "W2" },
58			{ 0, NULL }
59			};
60
61			static struct tok type2str[] = {
62			{ OSPF_TYPE_UMD, "umd" },
63			{ OSPF_TYPE_HELLO, "hello" },
64			{ OSPF_TYPE_DB, "dd" },
65			{ OSPF_TYPE_LSR, "ls_req" },
66			{ OSPF_TYPE_LSU, "ls_upd" },
67			{ OSPF_TYPE_LSA, "ls_ack" },
68			{ 0, NULL }
69			};
70
71			static char tstr[] = " [\|ospf]";
72
73			/* Forwards */
74			static inline void ospf_print_seqage(u_int32_t, time_t);
75			static inline void ospf_print_bits(const struct bits *, u_char);
76			static void ospf_print_ls_type(u_int, const struct in_addr *,
77			const struct in_addr , const char );
78			static int ospf_print_lshdr(const struct lsa_hdr *);
79			static int ospf_print_lsa(const struct lsa *);
80			static int ospf_decode_v2(const struct ospfhdr , const u_char );
81
82			static inline void
83			ospf_print_seqage(u_int32_t seq, time_t us)
84			{
85			time_t sec = us % 60;
86			time_t mins = (us / 60) % 60;
87			time_t hour = us / 3600;
88
89			printf(" S %X age ", seq);
90			if (hour)
91			printf("%u:%02u:%02u",
92			(u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
93			else if (mins)
94			printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
95			else
96			printf("%u", (u_int32_t) sec);
97			}
98
99
100			static inline void
101			ospf_print_bits(const struct bits *bp, u_char options)
102			{
103			char sep = ' ';
104
105			do {
106			if (options & bp->bit) {
107			printf("%c%s", sep, bp->str);
108			sep = '/';
109			}
110			} while ((++bp)->bit);
111			}
112
113			static void
114			ospf_print_ls_type(u_int ls_type, const struct in_addr *ls_stateid,
115			const struct in_addr ls_router, const char fmt)
116			{
117
118			switch (ls_type) {
119
120			case LS_TYPE_ROUTER:
121			printf(" rtr %s", ipaddr_string(ls_router));
122			break;
123
124			case LS_TYPE_NETWORK:
125			printf(" net dr %s if %s",
126			ipaddr_string(ls_router),
127			ipaddr_string(ls_stateid));
128			break;
129
130			case LS_TYPE_SUM_IP:
131			printf(" sum %s abr %s",
132			ipaddr_string(ls_stateid),
133			ipaddr_string(ls_router));
134			break;
135
136			case LS_TYPE_SUM_ABR:
137			printf(" abr %s rtr %s",
138			ipaddr_string(ls_router),
139			ipaddr_string(ls_stateid));
140			break;
141
142			case LS_TYPE_ASE:
143			printf(" ase %s asbr %s",
144			ipaddr_string(ls_stateid),
145			ipaddr_string(ls_router));
146			break;
147
148			case LS_TYPE_GROUP:
149			printf(" group %s rtr %s",
150			ipaddr_string(ls_stateid),
151			ipaddr_string(ls_router));
152			break;
153
154			default:
155			putchar(' ');
156			printf(fmt, ls_type);
157			break;
158			}
159			}
160
161			static int
162			ospf_print_lshdr(const struct lsa_hdr *lshp)
163			{
164
165			TCHECK(lshp->ls_type);
166			printf(" {"); /* } (ctags) */
167
168			TCHECK(lshp->ls_options);
169			ospf_print_bits(ospf_option_bits, lshp->ls_options);
170			TCHECK(lshp->ls_seq);
171			ospf_print_seqage(ntohl(lshp->ls_seq), ntohs(lshp->ls_age));
172			ospf_print_ls_type(lshp->ls_type, &lshp->ls_stateid, &lshp->ls_router,
173			"ls_type %d");
174
175			return (0);
176			trunc:
177			return (1);
178			}
179
180
181			/*
182			* Print a single link state advertisement. If truncated return 1, else 0.
183			*/
184			static int
185			ospf_print_lsa(const struct lsa *lsap)
186			{
187			const u_char *ls_end;
188			const struct rlalink *rlp;
189			const struct tos_metric *tosp;
190			const struct in_addr *ap;
191			const struct aslametric *almp;
192			const struct mcla *mcp;
193			const u_int32_t *lp;
194			int j, k;
195
196			if (ospf_print_lshdr(&lsap->ls_hdr))
197			return (1);
198			TCHECK(lsap->ls_hdr.ls_length);
199			ls_end = (u_char *)lsap + ntohs(lsap->ls_hdr.ls_length);
200			switch (lsap->ls_hdr.ls_type) {
201
202			case LS_TYPE_ROUTER:
203			TCHECK(lsap->lsa_un.un_rla.rla_flags);
204			ospf_print_bits(ospf_rla_flag_bits,
205			lsap->lsa_un.un_rla.rla_flags);
206
207			TCHECK(lsap->lsa_un.un_rla.rla_count);
208			j = ntohs(lsap->lsa_un.un_rla.rla_count);
209			TCHECK(lsap->lsa_un.un_rla.rla_link);
210			rlp = lsap->lsa_un.un_rla.rla_link;
211			while (j--) {
212			TCHECK(*rlp);
213			printf(" {"); /* } (ctags) */
214			switch (rlp->link_type) {
215
216			case RLA_TYPE_VIRTUAL:
217			printf(" virt");
218			/* FALLTHROUGH */
219
220			case RLA_TYPE_ROUTER:
221			printf(" nbrid %s if %s",
222			ipaddr_string(&rlp->link_id),
223			ipaddr_string(&rlp->link_data));
224			break;
225
226			case RLA_TYPE_TRANSIT:
227			printf(" dr %s if %s",
228			ipaddr_string(&rlp->link_id),
229			ipaddr_string(&rlp->link_data));
230			break;
231
232			case RLA_TYPE_STUB:
233			printf(" net %s mask %s",
234			ipaddr_string(&rlp->link_id),
235			ipaddr_string(&rlp->link_data));
236			break;
237
238			default:
239			/* { (ctags) */
240			printf(" ??RouterLinksType %d?? }",
241			rlp->link_type);
242			return (0);
243			}
244			printf(" tos 0 metric %d", ntohs(rlp->link_tos0metric));
245			tosp = (struct tos_metric *)
246			((sizeof rlp->link_tos0metric) + (u_char *) rlp);
247			for (k = 0; k < (int) rlp->link_toscount; ++k, ++tosp) {
248			TCHECK(*tosp);
249			printf(" tos %d metric %d",
250			tosp->tos_type,
251			ntohs(tosp->tos_metric));
252			}
253			/* { (ctags) */
254			printf(" }");
255			rlp = (struct rlalink )((u_char )(rlp + 1) +
256			((rlp->link_toscount) * sizeof(*tosp)));
257			}
258			break;
259
260			case LS_TYPE_NETWORK:
261			TCHECK(lsap->lsa_un.un_nla.nla_mask);
262			printf(" mask %s rtrs",
263			ipaddr_string(&lsap->lsa_un.un_nla.nla_mask));
264			ap = lsap->lsa_un.un_nla.nla_router;
265			while ((u_char *)ap < ls_end) {
266			TCHECK(*ap);
267			printf(" %s", ipaddr_string(ap));
268			++ap;
269			}
270			break;
271
272			case LS_TYPE_SUM_IP:
273			TCHECK(lsap->lsa_un.un_nla.nla_mask);
274			printf(" mask %s",
275			ipaddr_string(&lsap->lsa_un.un_sla.sla_mask));
276			/* FALLTHROUGH */
277
278			case LS_TYPE_SUM_ABR:
279			TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
280			lp = lsap->lsa_un.un_sla.sla_tosmetric;
281			while ((u_char *)lp < ls_end) {
282			u_int32_t ul;
283
284			TCHECK(*lp);
285			ul = ntohl(*lp);
286			printf(" tos %d metric %d",
287			(ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
288			ul & SLA_MASK_METRIC);
289			++lp;
290			}
291			break;
292
293			case LS_TYPE_ASE:
294			TCHECK(lsap->lsa_un.un_nla.nla_mask);
295			printf(" mask %s",
296			ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
297
298			TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
299			almp = lsap->lsa_un.un_asla.asla_metric;
300			while ((u_char *)almp < ls_end) {
301			u_int32_t ul;
302
303			TCHECK(almp->asla_tosmetric);
304			ul = ntohl(almp->asla_tosmetric);
305			printf(" type %d tos %d metric %d",
306			(ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
307			(ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS,
308			(ul & ASLA_MASK_METRIC));
309			TCHECK(almp->asla_forward);
310			if (almp->asla_forward.s_addr) {
311			printf(" forward %s",
312			ipaddr_string(&almp->asla_forward));
313			}
314			TCHECK(almp->asla_tag);
315			if (almp->asla_tag) {
316			printf(" tag %u",
317			ntohl(almp->asla_tag));
318			}
319			++almp;
320			}
321			break;
322
323			case LS_TYPE_GROUP:
324			/* Multicast extensions as of 23 July 1991 */
325			mcp = lsap->lsa_un.un_mcla;
326			while ((u_char *)mcp < ls_end) {
327			TCHECK(mcp->mcla_vid);
328			switch (ntohl(mcp->mcla_vtype)) {
329
330			case MCLA_VERTEX_ROUTER:
331			printf(" rtr rtrid %s",
332			ipaddr_string(&mcp->mcla_vid));
333			break;
334
335			case MCLA_VERTEX_NETWORK:
336			printf(" net dr %s",
337			ipaddr_string(&mcp->mcla_vid));
338			break;
339
340			default:
341			printf(" ??VertexType %u??",
342			(u_int32_t)ntohl(mcp->mcla_vtype));
343			break;
344			}
345			++mcp;
346			}
347			}
348
349			/* { (ctags) */
350			fputs(" }", stdout);
351			return (0);
352			trunc:
353			fputs(" }", stdout);
354			return (1);
355			}
356
357			static int
358			ospf_decode_v2(const struct ospfhdr op, const u_char dataend)
359			{
360			const struct in_addr *ap;
361			const struct lsr *lsrp;
362			const struct lsa_hdr *lshp;
363			const struct lsa *lsap;
364			char sep;
365			int i;
366
367			switch (op->ospf_type) {
368
369			case OSPF_TYPE_UMD:
370			/*
371			* Rob Coltun's special monitoring packets;
372			* do nothing
373			*/
374			break;
375
376			case OSPF_TYPE_HELLO:
377			if (vflag) {
378			TCHECK(op->ospf_hello.hello_deadint);
379			ospf_print_bits(ospf_option_bits,
380			op->ospf_hello.hello_options);
381			printf(" mask %s int %d pri %d dead %u",
382			ipaddr_string(&op->ospf_hello.hello_mask),
383			ntohs(op->ospf_hello.hello_helloint),
384			op->ospf_hello.hello_priority,
385			(u_int32_t)ntohl(op->ospf_hello.hello_deadint));
386			}
387			TCHECK(op->ospf_hello.hello_dr);
388			if (op->ospf_hello.hello_dr.s_addr != 0)
389			printf(" dr %s",
390			ipaddr_string(&op->ospf_hello.hello_dr));
391			TCHECK(op->ospf_hello.hello_bdr);
392			if (op->ospf_hello.hello_bdr.s_addr != 0)
393			printf(" bdr %s",
394			ipaddr_string(&op->ospf_hello.hello_bdr));
395			if (vflag) {
396			printf(" nbrs");
397			ap = op->ospf_hello.hello_neighbor;
398			while ((u_char *)ap < dataend) {
399			TCHECK(*ap);
400			printf(" %s", ipaddr_string(ap));
401			++ap;
402			}
403			}
404			break; /* HELLO */
405
406			case OSPF_TYPE_DB:
407			TCHECK(op->ospf_db.db_options);
408			ospf_print_bits(ospf_option_bits, op->ospf_db.db_options);
409			sep = ' ';
410			TCHECK(op->ospf_db.db_flags);
411			if (op->ospf_db.db_flags & OSPF_DB_INIT) {
412			printf("%cI", sep);
413			sep = '/';
414			}
415			if (op->ospf_db.db_flags & OSPF_DB_MORE) {
416			printf("%cM", sep);
417			sep = '/';
418			}
419			if (op->ospf_db.db_flags & OSPF_DB_MASTER) {
420			printf("%cMS", sep);
421			sep = '/';
422			}
423			TCHECK(op->ospf_db.db_seq);
424			printf(" mtu %u S %X", ntohs(op->ospf_db.db_mtu),
425			(u_int32_t)ntohl(op->ospf_db.db_seq));
426
427			if (vflag) {
428			/* Print all the LS adv's */
429			lshp = op->ospf_db.db_lshdr;
430
431			while (!ospf_print_lshdr(lshp)) {
432			/* { (ctags) */
433			printf(" }");
434			++lshp;
435			}
436			}
437			break;
438
439			case OSPF_TYPE_LSR:
440			if (vflag) {
441			lsrp = op->ospf_lsr;
442			while ((u_char *)lsrp < dataend) {
443			TCHECK(*lsrp);
444			printf(" {"); /* } (ctags) */
445			ospf_print_ls_type(ntohl(lsrp->ls_type),
446			&lsrp->ls_stateid,
447			&lsrp->ls_router,
448			"LinkStateType %d");
449			/* { (ctags) */
450			printf(" }");
451			++lsrp;
452			}
453			}
454			break;
455
456			case OSPF_TYPE_LSU:
457			if (vflag) {
458			lsap = op->ospf_lsu.lsu_lsa;
459			TCHECK(op->ospf_lsu.lsu_count);
460			i = ntohl(op->ospf_lsu.lsu_count);
461			while (i--) {
462			if (ospf_print_lsa(lsap))
463			goto trunc;
464			lsap = (struct lsa )((u_char )lsap +
465			ntohs(lsap->ls_hdr.ls_length));
466			}
467			}
468			break;
469
470
471			case OSPF_TYPE_LSA:
472			if (vflag) {
473			lshp = op->ospf_lsa.lsa_lshdr;
474
475			while (!ospf_print_lshdr(lshp)) {
476			/* { (ctags) */
477			printf(" }");
478			++lshp;
479			}
480			}
481			break;
482
483			default:
484			printf("v2 type %d", op->ospf_type);
485			break;
486			}
487			return (0);
488			trunc:
489			return (1);
490			}
491
492			void
493			ospf_print(const u_char bp, u_int length, const u_char bp2)
494			{
495			const struct ospfhdr *op;
496			const struct ip *ip;
497			const u_char *dataend;
498			const char *cp;
499
500			op = (struct ospfhdr *)bp;
501			ip = (struct ip *)bp2;
502			/* Print the source and destination address */
503			(void) printf("%s > %s:",
504			ipaddr_string(&ip->ip_src),
505			ipaddr_string(&ip->ip_dst));
506
507			/* XXX Before we do anything else, strip off the MD5 trailer */
508			TCHECK(op->ospf_authtype);
509			if (ntohs(op->ospf_authtype) == OSPF_AUTH_MD5) {
510			length -= OSPF_AUTH_MD5_LEN;
511			snapend -= OSPF_AUTH_MD5_LEN;
512			}
513
514			/* If the type is valid translate it, or just print the type */
515			/* value. If it's not valid, say so and return */
516			TCHECK(op->ospf_type);
517			cp = tok2str(type2str, "type%d", op->ospf_type);
518			printf(" OSPFv%d-%s ", op->ospf_version, cp);
519			if (*cp == 't')
520			return;
521
522			TCHECK(op->ospf_len);
523			if (length < ntohs(op->ospf_len)) {
524			printf(" [len %d]", ntohs(op->ospf_len));
525			return;
526			} else if (length > ntohs(op->ospf_len)) {
527			printf(" %d[%d]:", ntohs(op->ospf_len), length);
528			length = ntohs(op->ospf_len);
529			} else
530			printf(" %d:", length);
531			dataend = bp + length;
532
533			TCHECK(op->ospf_routerid);
534			printf(" rtrid %s", ipaddr_string(&op->ospf_routerid));
535
536			TCHECK(op->ospf_areaid);
537			if (op->ospf_areaid.s_addr != 0)
538			printf(" area %s", ipaddr_string(&op->ospf_areaid));
539			else
540			printf(" backbone");
541
542			if (vflag) {
543			/* Print authentication data (should we really do this?) */
544			TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata));
545			switch (ntohs(op->ospf_authtype)) {
546
547			case OSPF_AUTH_NONE:
548			break;
549
550			case OSPF_AUTH_SIMPLE:
551			printf(" auth \"");
552			(void)fn_printn(op->ospf_authdata,
553			sizeof(op->ospf_authdata), NULL);
554			printf("\"");
555			break;
556
557			case OSPF_AUTH_MD5:
558			printf(" auth MD5");
559			break;
560
561			default:
562			printf(" ??authtype-%d??", ntohs(op->ospf_authtype));
563			return;
564			}
565			}
566			/* Do rest according to version. */
567			switch (op->ospf_version) {
568
569			case 2:
570			/* ospf version 2 */
571			if (ospf_decode_v2(op, dataend))
572			goto trunc;
573			break;
574
575			default:
576			printf(" ospf [version %d]", op->ospf_version);
577			break;
578			} /* end switch on version */
579
580			return;
581			trunc:
582			fputs(tstr, stdout);
583			}