2 * Copyright (c) 2000 William C. Fenner.
5 * Kevin Steves <ks@hp.se> July 2000
7 * - print version, type string and packet length
8 * - print IP address count if > 1 (-v)
9 * - verify checksum (-v)
10 * - print authentication string (-v)
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that: (1) source code
14 * distributions retain the above copyright notice and this paragraph
15 * in its entirety, and (2) distributions including binary code include
16 * the above copyright notice and this paragraph in its entirety in
17 * the documentation or other materials provided with the distribution.
18 * The name of William C. Fenner may not be used to endorse or
19 * promote products derived from this software without specific prior
20 * written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' AND
21 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
22 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE.
27 static const char rcsid[] =
28 "@(#) $Header: /tcpdump/master/tcpdump/print-vrrp.c,v 1.5 2001/07/23 22:27:30 fenner Exp $";
39 #include <netinet/in.h>
41 #include "interface.h"
43 #include "addrtoname.h"
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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
55 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
59 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
61 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
62 * | Authentication Data (1) |
63 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
64 * | Authentication Data (2) |
65 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
69 #define VRRP_TYPE_ADVERTISEMENT 1
71 static const struct tok type2str[] = {
72 { VRRP_TYPE_ADVERTISEMENT, "advertisement" },
77 #define VRRP_AUTH_NONE 0
78 #define VRRP_AUTH_SIMPLE 1
79 #define VRRP_AUTH_AH 2
81 static const struct tok auth2str[] = {
82 { VRRP_AUTH_NONE, "none" },
83 { VRRP_AUTH_SIMPLE, "simple" },
84 { VRRP_AUTH_AH, "ah" },
89 vrrp_print(register const u_char *bp, register u_int len, int ttl)
91 int version, type, auth_type;
95 version = (bp[0] & 0xf0) >> 4;
97 type_s = tok2str(type2str, "type#%d", type);
98 printf("VRRPv%d-%s %d: ", version, type_s, len);
100 printf("[ttl=%d!] ", ttl);
101 if (version != 2 || type != VRRP_TYPE_ADVERTISEMENT)
104 printf("vrid=%d prio=%d", bp[1], bp[2]);
107 printf(" authtype=%s", tok2str(auth2str, NULL, auth_type));
108 printf(" intvl=%d", bp[5]);
114 if (TTEST2(bp[0], len) && in_cksum((const u_short*)bp, len, 0))
115 printf(" (bad vrrp cksum %x!)",
116 EXTRACT_16BITS(&bp[6]));
119 printf("(%d)", naddrs);
123 for (i = 0; i < naddrs; i++) {
125 printf("%c%s", c, ipaddr_string(bp));
129 if (auth_type == VRRP_AUTH_SIMPLE) { /* simple text password */
132 fn_printn(bp, 8, NULL);