mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-24 02:23:27 +08:00
1fe6e66ece
Update the already converted decoders to define the macro and to include interface.h instead of netdissect.h. Fix incurred compile errors.
135 lines
4.5 KiB
C
135 lines
4.5 KiB
C
/*
|
|
* Copyright (C) 2001 Julian Cowley
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the project 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 BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/* Cisco Hot Standby Router Protocol (HSRP). */
|
|
|
|
#define NETDISSECT_REWORKED
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <tcpdump-stdinc.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
|
|
/* HSRP op code types. */
|
|
static const char *op_code_str[] = {
|
|
"hello",
|
|
"coup",
|
|
"resign"
|
|
};
|
|
|
|
/* HSRP states and associated names. */
|
|
static const struct tok states[] = {
|
|
{ 0, "initial" },
|
|
{ 1, "learn" },
|
|
{ 2, "listen" },
|
|
{ 4, "speak" },
|
|
{ 8, "standby" },
|
|
{ 16, "active" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* RFC 2281:
|
|
*
|
|
* 0 1 2 3
|
|
* 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
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Version | Op Code | State | Hellotime |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Holdtime | Priority | Group | Reserved |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Authentication Data |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Authentication Data |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Virtual IP Address |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
|
|
#define HSRP_AUTH_SIZE 8
|
|
|
|
/* HSRP protocol header. */
|
|
struct hsrp {
|
|
u_int8_t hsrp_version;
|
|
u_int8_t hsrp_op_code;
|
|
u_int8_t hsrp_state;
|
|
u_int8_t hsrp_hellotime;
|
|
u_int8_t hsrp_holdtime;
|
|
u_int8_t hsrp_priority;
|
|
u_int8_t hsrp_group;
|
|
u_int8_t hsrp_reserved;
|
|
u_int8_t hsrp_authdata[HSRP_AUTH_SIZE];
|
|
struct in_addr hsrp_virtaddr;
|
|
};
|
|
|
|
void
|
|
hsrp_print(netdissect_options *ndo, register const u_int8_t *bp, register u_int len)
|
|
{
|
|
struct hsrp *hp = (struct hsrp *) bp;
|
|
|
|
ND_TCHECK(hp->hsrp_version);
|
|
ND_PRINT((ndo, "HSRPv%d", hp->hsrp_version));
|
|
if (hp->hsrp_version != 0)
|
|
return;
|
|
ND_TCHECK(hp->hsrp_op_code);
|
|
ND_PRINT((ndo, "-"));
|
|
ND_PRINT((ndo, "%s ", tok2strary(op_code_str, "unknown (%d)", hp->hsrp_op_code)));
|
|
ND_PRINT((ndo, "%d: ", len));
|
|
ND_TCHECK(hp->hsrp_state);
|
|
ND_PRINT((ndo, "state=%s ", tok2str(states, "Unknown (%d)", hp->hsrp_state)));
|
|
ND_TCHECK(hp->hsrp_group);
|
|
ND_PRINT((ndo, "group=%d ", hp->hsrp_group));
|
|
ND_TCHECK(hp->hsrp_reserved);
|
|
if (hp->hsrp_reserved != 0) {
|
|
ND_PRINT((ndo, "[reserved=%d!] ", hp->hsrp_reserved));
|
|
}
|
|
ND_TCHECK(hp->hsrp_virtaddr);
|
|
ND_PRINT((ndo, "addr=%s", ipaddr_string(&hp->hsrp_virtaddr)));
|
|
if (ndo->ndo_vflag) {
|
|
ND_PRINT((ndo, " hellotime="));
|
|
relts_print(hp->hsrp_hellotime);
|
|
ND_PRINT((ndo, " holdtime="));
|
|
relts_print(hp->hsrp_holdtime);
|
|
ND_PRINT((ndo, " priority=%d", hp->hsrp_priority));
|
|
ND_PRINT((ndo, " auth=\""));
|
|
if (fn_printn(hp->hsrp_authdata, sizeof(hp->hsrp_authdata),
|
|
ndo->ndo_snapend)) {
|
|
ND_PRINT((ndo, "\""));
|
|
goto trunc;
|
|
}
|
|
ND_PRINT((ndo, "\""));
|
|
}
|
|
return;
|
|
trunc:
|
|
ND_PRINT((ndo, "[|hsrp]"));
|
|
}
|