GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/tcpdump/print-hsrp.c Lines: 0 31 0.0 %
Date: 2017-11-13 Branches: 0 32 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: print-hsrp.c,v 1.5 2015/11/16 00:16:39 mmcc Exp $	*/
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/*
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 * Copyright (C) 2001 Julian Cowley
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 * 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 the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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/* Cisco Hot Standby Router Protocol (HSRP). */
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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 <sys/types.h>
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#include <stdio.h>
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#include <netinet/in.h>
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#include "interface.h"
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#include "addrtoname.h"
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/* HSRP op code types. */
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static const char *op_code_str[] = {
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	"hello",
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	"coup",
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	"resign"
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};
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/* HSRP states and associated names. */
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static struct tok states[] = {
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	{  0, "initial" },
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	{  1, "learn" },
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	{  2, "listen" },
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	{  4, "speak" },
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	{  8, "standby" },
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	{ 16, "active" },
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	{  0, NULL }
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};
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/*
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 * RFC 2281:
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 *
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 *  0                   1                   2                   3
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 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 * |   Version     |   Op Code     |     State     |   Hellotime   |
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 * |   Holdtime    |   Priority    |     Group     |   Reserved    |
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 * |                      Authentication  Data                     |
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 * |                      Authentication  Data                     |
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 * |                      Virtual IP Address                       |
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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 */
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#define HSRP_AUTH_SIZE	8
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/* HSRP protocol header. */
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struct hsrp {
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	u_char		hsrp_version;
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	u_char		hsrp_op_code;
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	u_char		hsrp_state;
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	u_char		hsrp_hellotime;
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	u_char		hsrp_holdtime;
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	u_char		hsrp_priority;
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	u_char		hsrp_group;
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	u_char		hsrp_reserved;
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	u_char		hsrp_authdata[HSRP_AUTH_SIZE];
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	struct in_addr	hsrp_virtaddr;
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};
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void
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hsrp_print(const u_char *bp, u_int len)
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{
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	struct hsrp *hp = (struct hsrp *) bp;
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	TCHECK(hp->hsrp_version);
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	printf("HSRPv%d", hp->hsrp_version);
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	if (hp->hsrp_version != 0)
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		return;
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	TCHECK(hp->hsrp_op_code);
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	printf("-");
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	if (hp->hsrp_op_code >= sizeof(op_code_str)/sizeof(*op_code_str))
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		printf("unknown (%d) ", hp->hsrp_op_code);
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	else
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		printf("%s ", op_code_str[hp->hsrp_op_code]);
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	printf("%d: ", len);
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	TCHECK(hp->hsrp_state);
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	printf("state=%s ", tok2str(states, "Unknown (%d)", hp->hsrp_state));
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	TCHECK(hp->hsrp_group);
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	printf("group=%d ", hp->hsrp_group);
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	TCHECK(hp->hsrp_reserved);
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	if (hp->hsrp_reserved != 0) {
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		printf("[reserved=%d!] ", hp->hsrp_reserved);
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	}
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	TCHECK2(hp->hsrp_virtaddr, sizeof(hp->hsrp_virtaddr));
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	printf("addr=%s", ipaddr_string(&hp->hsrp_virtaddr));
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	if (vflag) {
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		printf(" hellotime=");
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		relts_print(hp->hsrp_hellotime);
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		printf(" holdtime=");
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		relts_print(hp->hsrp_holdtime);
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		printf(" priority=%d", hp->hsrp_priority);
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		printf(" auth=\"");
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		fn_printn(hp->hsrp_authdata, sizeof(hp->hsrp_authdata), NULL);
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		printf("\"");
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	}
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	return;
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trunc:
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	printf("[|hsrp]");
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}