163 lines
4.2 KiB
C
163 lines
4.2 KiB
C
/*
|
|
* Copyright (C) 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"@(#) $Header: /tcpdump/master/tcpdump/print-ip6opts.c,v 1.2.2.1 2000/01/11 06:58:25 fenner Exp $";
|
|
#endif
|
|
|
|
#ifdef INET6
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/ip6.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
|
|
void
|
|
ip6_opt_print(const u_char *bp, int len)
|
|
{
|
|
int i;
|
|
int optlen;
|
|
|
|
for (i = 0; i < len; i += optlen) {
|
|
switch (bp[i]) {
|
|
case IP6OPT_PAD1:
|
|
optlen = 1;
|
|
break;
|
|
case IP6OPT_PADN:
|
|
if (len - i < IP6OPT_MINLEN) {
|
|
printf("(padn: trunc)");
|
|
goto trunc;
|
|
}
|
|
optlen = bp[i + 1] + 2;
|
|
break;
|
|
case IP6OPT_RTALERT:
|
|
if (len - i < IP6OPT_RTALERT_LEN) {
|
|
printf("(rtalert: trunc)");
|
|
goto trunc;
|
|
}
|
|
if (bp[i + 1] != IP6OPT_RTALERT_LEN - 2) {
|
|
printf("(rtalert: invalid len %d)", bp[i + 1]);
|
|
goto trunc;
|
|
}
|
|
printf("(rtalert: 0x%04x) ", ntohs(*(u_short *)&bp[i + 2]));
|
|
optlen = IP6OPT_RTALERT_LEN;
|
|
break;
|
|
case IP6OPT_JUMBO:
|
|
if (len - i < IP6OPT_JUMBO_LEN) {
|
|
printf("(jumbo: trunc)");
|
|
goto trunc;
|
|
}
|
|
if (bp[i + 1] != IP6OPT_JUMBO_LEN - 2) {
|
|
printf("(jumbo: invalid len %d)", bp[i + 1]);
|
|
goto trunc;
|
|
}
|
|
printf("(jumbo: %u) ", (u_int32_t)ntohl(*(u_int *)&bp[i + 2]));
|
|
optlen = IP6OPT_JUMBO_LEN;
|
|
break;
|
|
default:
|
|
if (len - i < IP6OPT_MINLEN) {
|
|
printf("(type %d: trunc)", bp[i]);
|
|
goto trunc;
|
|
}
|
|
printf("(type 0x%02x: len=%d) ", bp[i], bp[i + 1]);
|
|
optlen = bp[i + 1] + 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
end:
|
|
#endif
|
|
return;
|
|
|
|
trunc:
|
|
printf("[trunc] ");
|
|
}
|
|
|
|
int
|
|
hbhopt_print(register const u_char *bp)
|
|
{
|
|
const struct ip6_hbh *dp = (struct ip6_hbh *)bp;
|
|
register const u_char *ep;
|
|
int hbhlen = 0;
|
|
|
|
/* 'ep' points to the end of avaible data. */
|
|
ep = snapend;
|
|
TCHECK(dp->ip6h_len);
|
|
hbhlen = (int)((dp->ip6h_len + 1) << 3);
|
|
TCHECK2(dp, hbhlen);
|
|
printf("HBH ");
|
|
if (vflag)
|
|
ip6_opt_print((const u_char *)dp + sizeof(*dp), hbhlen - sizeof(*dp));
|
|
|
|
return(hbhlen);
|
|
|
|
trunc:
|
|
fputs("[|HBH]", stdout);
|
|
return(hbhlen);
|
|
}
|
|
|
|
int
|
|
dstopt_print(register const u_char *bp)
|
|
{
|
|
const struct ip6_dest *dp = (struct ip6_dest *)bp;
|
|
register const u_char *ep;
|
|
int dstoptlen = 0;
|
|
|
|
/* 'ep' points to the end of avaible data. */
|
|
ep = snapend;
|
|
TCHECK(dp->ip6d_len);
|
|
dstoptlen = (int)((dp->ip6d_len + 1) << 3);
|
|
TCHECK2(dp, dstoptlen);
|
|
printf("DSTOPT ");
|
|
if (vflag) {
|
|
ip6_opt_print((const u_char *)dp + sizeof(*dp),
|
|
dstoptlen - sizeof(*dp));
|
|
}
|
|
|
|
return(dstoptlen);
|
|
|
|
trunc:
|
|
fputs("[|DSTOPT]", stdout);
|
|
return(dstoptlen);
|
|
}
|
|
#endif /* INET6 */
|