2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
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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
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15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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23 static const char rcsid[] _U_ =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-ipcomp.c,v 1.20 2003/11/19 00:36:08 guy Exp $";
32 #include <tcpdump-stdinc.h>
37 u_int8_t comp_nxt; /* Next Header */
38 u_int8_t comp_flags; /* Length of data, in 32bit */
39 u_int16_t comp_cpi; /* Compression parameter index */
42 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
46 #include "interface.h"
47 #include "addrtoname.h"
51 ipcomp_print(register const u_char *bp, int *nhdr _U_)
53 register const struct ipcomp *ipcomp;
54 register const u_char *ep;
56 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
60 ipcomp = (struct ipcomp *)bp;
61 cpi = EXTRACT_16BITS(&ipcomp->comp_cpi);
63 /* 'ep' points to the end of available data. */
66 if ((u_char *)(ipcomp + 1) >= ep - sizeof(struct ipcomp)) {
67 fputs("[|IPCOMP]", stdout);
70 printf("IPComp(cpi=0x%04x)", cpi);
72 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
77 * We may want to decompress the packet here. Packet buffer
78 * management is a headache (if we decompress, packet will become
82 *nhdr = ipcomp->comp_nxt;
83 advance = sizeof(struct ipcomp);