GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/tcpdump/print-vrrp.c Lines: 0 36 0.0 %
Date: 2017-11-13 Branches: 0 45 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: print-vrrp.c,v 1.4 2015/11/16 00:16:39 mmcc Exp $	*/
2
3
/*
4
 * Copyright (c) 2000 William C. Fenner.
5
 *                All rights reserved.
6
 *
7
 * Kevin Steves <ks@hp.se> July 2000
8
 * Modified to:
9
 * - print version, type string and packet length
10
 * - print IP address count if > 1 (-v)
11
 * - verify checksum (-v)
12
 * - print authentication string (-v)
13
 *
14
 * Redistribution and use in source and binary forms, with or without
15
 * modification, are permitted provided that: (1) source code
16
 * distributions retain the above copyright notice and this paragraph
17
 * in its entirety, and (2) distributions including binary code include
18
 * the above copyright notice and this paragraph in its entirety in
19
 * the documentation or other materials provided with the distribution.
20
 * The name of William C. Fenner may not be used to endorse or
21
 * promote products derived from this software without specific prior
22
 * written permission.  THIS SOFTWARE IS PROVIDED ``AS IS'' AND
23
 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
24
 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25
 * FOR A PARTICULAR PURPOSE.
26
 *
27
 * from tcpdump.org:
28
 * Header: /tcpdump/master/tcpdump/print-vrrp.c,v 1.3 2000/10/10 05:05:08 guy Exp
29
 */
30
31
#ifdef HAVE_CONFIG_H
32
#include "config.h"
33
#endif
34
35
#include <stdio.h>
36
#include <stdlib.h>
37
#include <unistd.h>
38
39
#include <netinet/in.h>
40
41
#include "interface.h"
42
#include "extract.h"
43
#include "addrtoname.h"
44
45
/*
46
 * RFC 2338:
47
 *     0                   1                   2                   3
48
 *     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
49
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
50
 *    |Version| Type  | Virtual Rtr ID|   Priority    | Count IP Addrs|
51
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
52
 *    |   Auth Type   |   Adver Int   |          Checksum             |
53
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
54
 *    |                         IP Address (1)                        |
55
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
56
 *    |                            .                                  |
57
 *    |                            .                                  |
58
 *    |                            .                                  |
59
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
60
 *    |                         IP Address (n)                        |
61
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
62
 *    |                     Authentication Data (1)                   |
63
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
64
 *    |                     Authentication Data (2)                   |
65
 *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
66
 */
67
void
68
vrrp_print(const u_char *bp, u_int len, int ttl)
69
{
70
	int version, type, auth_type;
71
	char *type_s;
72
73
	TCHECK(bp[0]);
74
	version = (bp[0] & 0xf0) >> 4;
75
	type = bp[0] & 0x0f;
76
	if (type == 1)
77
		type_s = "advertise";
78
	else
79
		type_s = "unknown";
80
	printf("VRRPv%d-%s %d: ", version, type_s, len);
81
	if (ttl != 255)
82
		printf("[ttl=%d!] ", ttl);
83
	if (version != 2 || type != 1)
84
		return;
85
	TCHECK(bp[2]);
86
	printf("vrid=%d prio=%d", bp[1], bp[2]);
87
	TCHECK(bp[5]);
88
	auth_type = bp[4];
89
	if (auth_type != 0)
90
		printf(" authtype=%d", auth_type);
91
	printf(" intvl=%d", bp[5]);
92
	if (vflag) {
93
		int naddrs = bp[3];
94
		int i;
95
		char c;
96
97
		if (TTEST2(bp[0], len) && in_cksum((const u_short*)bp, len, 0))
98
			printf(" (bad vrrp cksum %x!)",
99
				EXTRACT_16BITS(&bp[6]));
100
		printf(" addrs");
101
		if (naddrs > 1)
102
			printf("(%d)", naddrs);
103
		printf(":");
104
		c = ' ';
105
		bp += 8;
106
		for (i = 0; i < naddrs; i++) {
107
			TCHECK(bp[3]);
108
			printf("%c%s", c, ipaddr_string(bp));
109
			c = ',';
110
			bp += 4;
111
		}
112
		if (auth_type == 1) { /* simple text password */
113
			TCHECK(bp[7]);
114
			printf(" auth %.8s", bp);
115
		}
116
	}
117
	return;
118
trunc:
119
	printf("[|vrrp]");
120
}