xref: /freebsd/contrib/tcpdump/print-vjc.c (revision 685295f4d740a26b206b4cae691262196b887f34)
1b0453382SBill Fenner /*
2b0453382SBill Fenner  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
3b0453382SBill Fenner  *	The Regents of the University of California.  All rights reserved.
4b0453382SBill Fenner  *
5b0453382SBill Fenner  * Redistribution and use in source and binary forms, with or without
6b0453382SBill Fenner  * modification, are permitted provided that: (1) source code distributions
7b0453382SBill Fenner  * retain the above copyright notice and this paragraph in its entirety, (2)
8b0453382SBill Fenner  * distributions including binary code include the above copyright notice and
9b0453382SBill Fenner  * this paragraph in its entirety in the documentation or other materials
10b0453382SBill Fenner  * provided with the distribution, and (3) all advertising materials mentioning
11b0453382SBill Fenner  * features or use of this software display the following acknowledgement:
12b0453382SBill Fenner  * ``This product includes software developed by the University of California,
13b0453382SBill Fenner  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14b0453382SBill Fenner  * the University nor the names of its contributors may be used to endorse
15b0453382SBill Fenner  * or promote products derived from this software without specific prior
16b0453382SBill Fenner  * written permission.
17b0453382SBill Fenner  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18b0453382SBill Fenner  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19b0453382SBill Fenner  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20b0453382SBill Fenner  */
21b0453382SBill Fenner 
22b0453382SBill Fenner #ifdef HAVE_CONFIG_H
23b0453382SBill Fenner #include "config.h"
24b0453382SBill Fenner #endif
25b0453382SBill Fenner 
26b0453382SBill Fenner #ifndef lint
27b0453382SBill Fenner static const char rcsid[] =
28685295f4SBill Fenner     "@(#) $Header: /tcpdump/master/tcpdump/print-vjc.c,v 1.9 2000/10/09 01:53:21 guy Exp $ (LBL)";
29b0453382SBill Fenner #endif
30b0453382SBill Fenner 
31b0453382SBill Fenner #include <sys/param.h>
32b0453382SBill Fenner #include <sys/time.h>
33b0453382SBill Fenner 
34b0453382SBill Fenner #include <netinet/in.h>
35b0453382SBill Fenner 
36b0453382SBill Fenner #include <ctype.h>
37b0453382SBill Fenner #include <netdb.h>
38b0453382SBill Fenner #include <pcap.h>
39b0453382SBill Fenner #include <stdio.h>
40b0453382SBill Fenner 
41b0453382SBill Fenner #include "interface.h"
42b0453382SBill Fenner #include "addrtoname.h"
43b0453382SBill Fenner 
44685295f4SBill Fenner #include "slcompress.h"
45685295f4SBill Fenner #include "ppp.h"
46685295f4SBill Fenner 
47b0453382SBill Fenner int
48b0453382SBill Fenner vjc_print(register const char *bp, register u_int length, u_short proto)
49b0453382SBill Fenner {
50b0453382SBill Fenner 	int i;
51b0453382SBill Fenner 
52b0453382SBill Fenner 	switch (bp[0] & 0xf0) {
53b0453382SBill Fenner 	case TYPE_IP:
54b0453382SBill Fenner 		if (eflag)
55b0453382SBill Fenner 			printf("(vjc type=IP) ");
56b0453382SBill Fenner 		return PPP_IP;
57b0453382SBill Fenner 	case TYPE_UNCOMPRESSED_TCP:
58b0453382SBill Fenner 		if (eflag)
59b0453382SBill Fenner 			printf("(vjc type=raw TCP) ");
60b0453382SBill Fenner 		return PPP_IP;
61b0453382SBill Fenner 	case TYPE_COMPRESSED_TCP:
62b0453382SBill Fenner 		if (eflag)
63b0453382SBill Fenner 			printf("(vjc type=compressed TCP) ");
64b0453382SBill Fenner 		for (i = 0; i < 8; i++) {
65b0453382SBill Fenner 			if (bp[1] & (0x80 >> i))
66b0453382SBill Fenner 				printf("%c", "?CI?SAWU"[i]);
67b0453382SBill Fenner 		}
68b0453382SBill Fenner 		if (bp[1])
69b0453382SBill Fenner 			printf(" ");
70b0453382SBill Fenner 		printf("C=0x%02x ", bp[2]);
71b0453382SBill Fenner 		printf("sum=0x%04x ", *(u_short *)&bp[3]);
72b0453382SBill Fenner 		return -1;
73b0453382SBill Fenner 	case TYPE_ERROR:
74b0453382SBill Fenner 		if (eflag)
75b0453382SBill Fenner 			printf("(vjc type=error) ");
76b0453382SBill Fenner 		return -1;
77b0453382SBill Fenner 	default:
78b0453382SBill Fenner 		if (eflag)
79b0453382SBill Fenner 			printf("(vjc type=0x%02x) ", bp[0] & 0xf0);
80b0453382SBill Fenner 		return -1;
81b0453382SBill Fenner 	}
82b0453382SBill Fenner }
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