Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-symantec.c
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c8cf0f94
PA
1/*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
3 * The Regents of the University of California. All rights reserved.
4 *
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
16 * written permission.
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.
20 */
21#ifndef lint
22static const char rcsid[] _U_ =
23 "@(#) $Header: /tcpdump/master/tcpdump/print-symantec.c,v 1.4.2.1 2005/07/07 01:24:39 guy Exp $ (LBL)";
24#endif
25
26#ifdef HAVE_CONFIG_H
27#include "config.h"
28#endif
29
30#include <tcpdump-stdinc.h>
31
32#include <stdio.h>
33#include <pcap.h>
34
35#include "interface.h"
36#include "addrtoname.h"
37#include "ethertype.h"
38
39#include "ether.h"
40
41struct symantec_header {
42 u_int8_t stuff1[6];
43 u_int16_t ether_type;
44 u_int8_t stuff2[36];
45};
46
47static inline void
48symantec_hdr_print(register const u_char *bp, u_int length)
49{
50 register const struct symantec_header *sp;
51 u_int16_t etype;
52
53 sp = (const struct symantec_header *)bp;
54
55 etype = ntohs(sp->ether_type);
56 if (!qflag) {
57 if (etype <= ETHERMTU)
58 (void)printf("invalid ethertype %u", etype);
59 else
60 (void)printf("ethertype %s (0x%04x)",
61 tok2str(ethertype_values,"Unknown", etype),
62 etype);
63 } else {
64 if (etype <= ETHERMTU)
65 (void)printf("invalid ethertype %u", etype);
66 else
67 (void)printf("%s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", etype));
68 }
69
70 (void)printf(", length %u: ", length);
71}
72
73/*
74 * This is the top level routine of the printer. 'p' points
75 * to the ether header of the packet, 'h->ts' is the timestamp,
76 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
77 * is the number of bytes actually captured.
78 */
79u_int
80symantec_if_print(const struct pcap_pkthdr *h, const u_char *p)
81{
82 u_int length = h->len;
83 u_int caplen = h->caplen;
84 struct symantec_header *sp;
85 u_short ether_type;
86 u_short extracted_ether_type;
87
88 if (caplen < sizeof (struct symantec_header)) {
89 printf("[|symantec]");
90 return caplen;
91 }
92
93 if (eflag)
94 symantec_hdr_print(p, length);
95
96 length -= sizeof (struct symantec_header);
97 caplen -= sizeof (struct symantec_header);
98 sp = (struct symantec_header *)p;
99 p += sizeof (struct symantec_header);
100
101 ether_type = ntohs(sp->ether_type);
102
103 if (ether_type <= ETHERMTU) {
104 /* ether_type not known, print raw packet */
105 if (!eflag)
106 symantec_hdr_print((u_char *)sp, length + sizeof (struct symantec_header));
107
108 if (!suppress_default_print)
109 default_print(p, caplen);
110 } else if (ether_encap_print(ether_type, p, length, caplen,
111 &extracted_ether_type) == 0) {
112 /* ether_type not known, print raw packet */
113 if (!eflag)
114 symantec_hdr_print((u_char *)sp, length + sizeof (struct symantec_header));
115
116 if (!suppress_default_print)
117 default_print(p, caplen);
118 }
119
120 return (sizeof (struct symantec_header));
121}