mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
3c602fabf9
MFC after: 1 month
177 lines
5.7 KiB
C
177 lines
5.7 KiB
C
/*
|
|
* Copyright (c) 1989, 1990, 1991, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that: (1) source code distributions
|
|
* retain the above copyright notice and this paragraph in its entirety, (2)
|
|
* distributions including binary code include the above copyright notice and
|
|
* this paragraph in its entirety in the documentation or other materials
|
|
* provided with the distribution, and (3) all advertising materials mentioning
|
|
* features or use of this software display the following acknowledgement:
|
|
* ``This product includes software developed by the University of California,
|
|
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
|
|
* the University 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
#define NETDISSECT_REWORKED
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifdef INET6
|
|
|
|
#include <tcpdump-stdinc.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
#include "extract.h"
|
|
|
|
/*
|
|
* Copyright (C) 1995, 1996, 1997 and 1998 WIDE Project.
|
|
* 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.
|
|
*/
|
|
#define RIP6_VERSION 1
|
|
|
|
#define RIP6_REQUEST 1
|
|
#define RIP6_RESPONSE 2
|
|
|
|
struct netinfo6 {
|
|
struct in6_addr rip6_dest;
|
|
uint16_t rip6_tag;
|
|
uint8_t rip6_plen;
|
|
uint8_t rip6_metric;
|
|
};
|
|
|
|
struct rip6 {
|
|
uint8_t rip6_cmd;
|
|
uint8_t rip6_vers;
|
|
uint8_t rip6_res1[2];
|
|
union {
|
|
struct netinfo6 ru6_nets[1];
|
|
char ru6_tracefile[1];
|
|
} rip6un;
|
|
#define rip6_nets rip6un.ru6_nets
|
|
#define rip6_tracefile rip6un.ru6_tracefile
|
|
};
|
|
|
|
#define HOPCNT_INFINITY6 16
|
|
|
|
#if !defined(IN6_IS_ADDR_UNSPECIFIED) && !defined(_MSC_VER) /* MSVC inline */
|
|
static int IN6_IS_ADDR_UNSPECIFIED(const struct in6_addr *addr)
|
|
{
|
|
static const struct in6_addr in6addr_any; /* :: */
|
|
return (memcmp(addr, &in6addr_any, sizeof(*addr)) == 0);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
rip6_entry_print(netdissect_options *ndo, register const struct netinfo6 *ni, int metric)
|
|
{
|
|
int l;
|
|
l = ND_PRINT((ndo, "%s/%d", ip6addr_string(ndo, &ni->rip6_dest), ni->rip6_plen));
|
|
if (ni->rip6_tag)
|
|
l += ND_PRINT((ndo, " [%d]", EXTRACT_16BITS(&ni->rip6_tag)));
|
|
if (metric)
|
|
l += ND_PRINT((ndo, " (%d)", ni->rip6_metric));
|
|
return l;
|
|
}
|
|
|
|
void
|
|
ripng_print(netdissect_options *ndo, const u_char *dat, unsigned int length)
|
|
{
|
|
register const struct rip6 *rp = (struct rip6 *)dat;
|
|
register const struct netinfo6 *ni;
|
|
register u_int amt;
|
|
register u_int i;
|
|
int j;
|
|
int trunc;
|
|
|
|
if (ndo->ndo_snapend < dat)
|
|
return;
|
|
amt = ndo->ndo_snapend - dat;
|
|
i = min(length, amt);
|
|
if (i < (sizeof(struct rip6) - sizeof(struct netinfo6)))
|
|
return;
|
|
i -= (sizeof(struct rip6) - sizeof(struct netinfo6));
|
|
|
|
switch (rp->rip6_cmd) {
|
|
|
|
case RIP6_REQUEST:
|
|
j = length / sizeof(*ni);
|
|
if (j == 1
|
|
&& rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6
|
|
&& IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) {
|
|
ND_PRINT((ndo, " ripng-req dump"));
|
|
break;
|
|
}
|
|
if (j * sizeof(*ni) != length - 4)
|
|
ND_PRINT((ndo, " ripng-req %d[%u]:", j, length));
|
|
else
|
|
ND_PRINT((ndo, " ripng-req %d:", j));
|
|
trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
|
|
for (ni = rp->rip6_nets; i >= sizeof(*ni);
|
|
i -= sizeof(*ni), ++ni) {
|
|
if (ndo->ndo_vflag > 1)
|
|
ND_PRINT((ndo, "\n\t"));
|
|
else
|
|
ND_PRINT((ndo, " "));
|
|
rip6_entry_print(ndo, ni, 0);
|
|
}
|
|
break;
|
|
case RIP6_RESPONSE:
|
|
j = length / sizeof(*ni);
|
|
if (j * sizeof(*ni) != length - 4)
|
|
ND_PRINT((ndo, " ripng-resp %d[%u]:", j, length));
|
|
else
|
|
ND_PRINT((ndo, " ripng-resp %d:", j));
|
|
trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
|
|
for (ni = rp->rip6_nets; i >= sizeof(*ni);
|
|
i -= sizeof(*ni), ++ni) {
|
|
if (ndo->ndo_vflag > 1)
|
|
ND_PRINT((ndo, "\n\t"));
|
|
else
|
|
ND_PRINT((ndo, " "));
|
|
rip6_entry_print(ndo, ni, ni->rip6_metric);
|
|
}
|
|
if (trunc)
|
|
ND_PRINT((ndo, "[|ripng]"));
|
|
break;
|
|
default:
|
|
ND_PRINT((ndo, " ripng-%d ?? %u", rp->rip6_cmd, length));
|
|
break;
|
|
}
|
|
if (rp->rip6_vers != RIP6_VERSION)
|
|
ND_PRINT((ndo, " [vers %d]", rp->rip6_vers));
|
|
}
|
|
#endif /* INET6 */
|