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https://github.com/the-tcpdump-group/tcpdump.git
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ce132b307b
ip6.h is almost normal RFC2292 header. icmp6.h has couple of extensions (not covered by RFC2292), like MLD, ICMPv6 nodeinfo, and router renumber. XXX how to synchronize with future kame changes?
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: /tcpdump/master/tcpdump/print-frag6.c,v 1.12 2000-10-07 05:53:10 itojun Exp $";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef INET6
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <stdio.h>
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#include "ip6.h"
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#include "interface.h"
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#include "addrtoname.h"
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int
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frag6_print(register const u_char *bp, register const u_char *bp2)
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{
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register const struct ip6_frag *dp;
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register const struct ip6_hdr *ip6;
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register const u_char *ep;
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#if 0
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#define TCHECK(var) if ((u_char *)&(var) >= ep - sizeof(var)) goto trunc
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#endif
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dp = (struct ip6_frag *)bp;
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ip6 = (struct ip6_hdr *)bp2;
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/* 'ep' points to the end of available data. */
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ep = snapend;
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TCHECK(dp->ip6f_offlg);
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if (vflag) {
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printf("frag (0x%08x:%d|%ld)",
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(u_int32_t)ntohl(dp->ip6f_ident),
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ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
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sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
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(long)(bp - bp2) - sizeof(struct ip6_frag));
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} else {
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printf("frag (%d|%ld)",
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ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
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sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
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(long)(bp - bp2) - sizeof(struct ip6_frag));
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}
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#if 1
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/* it is meaningless to decode non-first fragment */
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if (ntohs(dp->ip6f_offlg & IP6F_OFF_MASK) != 0)
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return 65535;
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else
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#endif
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{
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fputs(" ", stdout);
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return sizeof(struct ip6_frag);
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}
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trunc:
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fputs("[|frag]", stdout);
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return 65535;
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#undef TCHECK
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}
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#endif /* INET6 */
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