2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
23 static const char rcsid[] =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-ipcomp.c,v 1.2.2.2 2000/01/25 18:31:10 itojun Exp $";
32 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/socket.h>
37 #include <net/route.h>
40 #include <netinet/in.h>
41 #include <netinet/if_ether.h>
42 #include <netinet/in_systm.h>
43 #include <netinet/ip.h>
44 #include <netinet/ip_icmp.h>
45 #include <netinet/ip_var.h>
46 #include <netinet/udp.h>
47 #include <netinet/udp_var.h>
48 #include <netinet/tcp.h>
53 #include <netinet/ip6.h>
57 u_int8_t comp_nxt; /* Next Header */
58 u_int8_t comp_flags; /* Length of data, in 32bit */
59 u_int16_t comp_cpi; /* Compression parameter index */
62 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
66 #include "interface.h"
67 #include "addrtoname.h"
70 ipcomp_print(register const u_char *bp, register const u_char *bp2, int *nhdr)
72 register const struct ipcomp *ipcomp;
73 register const u_char *ep;
75 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
79 ipcomp = (struct ipcomp *)bp;
80 cpi = (u_int16_t)ntohs(ipcomp->comp_cpi);
82 /* 'ep' points to the end of avaible data. */
85 if ((u_char *)(ipcomp + 1) >= ep - sizeof(struct ipcomp)) {
86 fputs("[|IPCOMP]", stdout);
89 printf("IPComp(cpi=%u)", cpi);
91 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
96 * We may want to decompress the packet here. Packet buffer
97 * management is a headache (if we decompress, packet will become
101 *nhdr = ipcomp->comp_nxt;
102 advance = sizeof(struct ipcomp);