| | 1 | /* |
| | 2 | * Copyright (C) 2001 Julian Cowley |
| | 3 | * All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without |
| | 6 | * modification, are permitted provided that the following conditions |
| | 7 | * are met: |
| | 8 | * 1. Redistributions of source code must retain the above copyright |
| | 9 | * notice, this list of conditions and the following disclaimer. |
| | 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 11 | * notice, this list of conditions and the following disclaimer in the |
| | 12 | * documentation and/or other materials provided with the distribution. |
| | 13 | * 3. Neither the name of the project nor the names of its contributors |
| | 14 | * may be used to endorse or promote products derived from this software |
| | 15 | * without specific prior written permission. |
| | 16 | * |
| | 17 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| | 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| | 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 27 | * SUCH DAMAGE. |
| | 28 | */ |
| | 29 | |
| | 30 | /* Cisco Hot Standby Router Protocol (HSRP). */ |
| | 31 | |
| | 32 | #ifndef lint |
| | 33 | static const char rcsid[] _U_ = |
| | 34 | "@(#) $Header: /tcpdump/master/tcpdump/print-hsrp.c,v 1.9.2.1 2005/05/06 07:57:17 guy Exp $"; |
| | 35 | #endif |
| | 36 | |
| | 37 | #ifdef HAVE_CONFIG_H |
| | 38 | #include "config.h" |
| | 39 | #endif |
| | 40 | |
| | 41 | #include <tcpdump-stdinc.h> |
| | 42 | |
| | 43 | #include <stdio.h> |
| | 44 | |
| | 45 | #include "interface.h" |
| | 46 | #include "addrtoname.h" |
| | 47 | |
| | 48 | /* HSRP op code types. */ |
| | 49 | static const char *op_code_str[] = { |
| | 50 | "hello", |
| | 51 | "coup", |
| | 52 | "resign" |
| | 53 | }; |
| | 54 | |
| | 55 | /* HSRP states and associated names. */ |
| | 56 | static struct tok states[] = { |
| | 57 | { 0, "initial" }, |
| | 58 | { 1, "learn" }, |
| | 59 | { 2, "listen" }, |
| | 60 | { 4, "speak" }, |
| | 61 | { 8, "standby" }, |
| | 62 | { 16, "active" }, |
| | 63 | { 0, NULL } |
| | 64 | }; |
| | 65 | |
| | 66 | /* |
| | 67 | * RFC 2281: |
| | 68 | * |
| | 69 | * 0 1 2 3 |
| | 70 | * 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 |
| | 71 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | 72 | * | Version | Op Code | State | Hellotime | |
| | 73 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | 74 | * | Holdtime | Priority | Group | Reserved | |
| | 75 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | 76 | * | Authentication Data | |
| | 77 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | 78 | * | Authentication Data | |
| | 79 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | 80 | * | Virtual IP Address | |
| | 81 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | 82 | */ |
| | 83 | |
| | 84 | #define HSRP_AUTH_SIZE 8 |
| | 85 | |
| | 86 | /* HSRP protocol header. */ |
| | 87 | struct hsrp { |
| | 88 | u_int8_t hsrp_version; |
| | 89 | u_int8_t hsrp_op_code; |
| | 90 | u_int8_t hsrp_state; |
| | 91 | u_int8_t hsrp_hellotime; |
| | 92 | u_int8_t hsrp_holdtime; |
| | 93 | u_int8_t hsrp_priority; |
| | 94 | u_int8_t hsrp_group; |
| | 95 | u_int8_t hsrp_reserved; |
| | 96 | u_int8_t hsrp_authdata[HSRP_AUTH_SIZE]; |
| | 97 | struct in_addr hsrp_virtaddr; |
| | 98 | }; |
| | 99 | |
| | 100 | void |
| | 101 | hsrp_print(register const u_int8_t *bp, register u_int len) |
| | 102 | { |
| | 103 | struct hsrp *hp = (struct hsrp *) bp; |
| | 104 | |
| | 105 | TCHECK(hp->hsrp_version); |
| | 106 | printf("HSRPv%d", hp->hsrp_version); |
| | 107 | if (hp->hsrp_version != 0) |
| | 108 | return; |
| | 109 | TCHECK(hp->hsrp_op_code); |
| | 110 | printf("-"); |
| | 111 | printf("%s ", tok2strary(op_code_str, "unknown (%d)", hp->hsrp_op_code)); |
| | 112 | printf("%d: ", len); |
| | 113 | TCHECK(hp->hsrp_state); |
| | 114 | printf("state=%s ", tok2str(states, "Unknown (%d)", hp->hsrp_state)); |
| | 115 | TCHECK(hp->hsrp_group); |
| | 116 | printf("group=%d ", hp->hsrp_group); |
| | 117 | TCHECK(hp->hsrp_reserved); |
| | 118 | if (hp->hsrp_reserved != 0) { |
| | 119 | printf("[reserved=%d!] ", hp->hsrp_reserved); |
| | 120 | } |
| | 121 | TCHECK(hp->hsrp_virtaddr); |
| | 122 | printf("addr=%s", ipaddr_string(&hp->hsrp_virtaddr)); |
| | 123 | if (vflag) { |
| | 124 | printf(" hellotime="); |
| | 125 | relts_print(hp->hsrp_hellotime); |
| | 126 | printf(" holdtime="); |
| | 127 | relts_print(hp->hsrp_holdtime); |
| | 128 | printf(" priority=%d", hp->hsrp_priority); |
| | 129 | printf(" auth=\""); |
| | 130 | if (fn_printn(hp->hsrp_authdata, sizeof(hp->hsrp_authdata), |
| | 131 | snapend)) { |
| | 132 | printf("\""); |
| | 133 | goto trunc; |
| | 134 | } |
| | 135 | printf("\""); |
| | 136 | } |
| | 137 | return; |
| | 138 | trunc: |
| | 139 | printf("[|hsrp]"); |
| | 140 | } |
projects / dragonfly.git / blame_incremental