Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-arcnet.c
CommitLineData
c8cf0f94
PA
1/*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
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 * From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
22 */
23#ifndef lint
24static const char rcsid[] _U_ =
25 "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.20 2005/04/06 21:32:38 mcr Exp $ (LBL)";
26#endif
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include <tcpdump-stdinc.h>
33
34#include <stdio.h>
35#include <pcap.h>
36
37#include "interface.h"
38#include "arcnet.h"
39
40static int arcnet_encap_print(u_char arctype, const u_char *p,
41 u_int length, u_int caplen);
42
43struct tok arctypemap[] = {
44 { ARCTYPE_IP_OLD, "oldip" },
45 { ARCTYPE_ARP_OLD, "oldarp" },
46 { ARCTYPE_IP, "ip" },
47 { ARCTYPE_ARP, "arp" },
48 { ARCTYPE_REVARP, "rarp" },
49 { ARCTYPE_ATALK, "atalk" },
50 { ARCTYPE_BANIAN, "banyan" },
51 { ARCTYPE_IPX, "ipx" },
52 { ARCTYPE_INET6, "ipv6" },
53 { ARCTYPE_DIAGNOSE, "diag" },
54 { 0, 0 }
55};
56
57static inline void
58arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid)
59{
60 const struct arc_header *ap;
61 const char *arctypename;
62
63
64 ap = (const struct arc_header *)bp;
65
66
67 if (qflag) {
68 (void)printf("%02x %02x %d: ",
69 ap->arc_shost,
70 ap->arc_dhost,
71 length);
72 return;
73 }
74
75 arctypename = tok2str(arctypemap, "%02x", ap->arc_type);
76
77 if (!phds) {
78 (void)printf("%02x %02x %s %d: ",
79 ap->arc_shost, ap->arc_dhost, arctypename,
80 length);
81 return;
82 }
83
84 if (flag == 0) {
85 (void)printf("%02x %02x %s seqid %04x %d: ",
86 ap->arc_shost, ap->arc_dhost, arctypename, seqid,
87 length);
88 return;
89 }
90
91 if (flag & 1)
92 (void)printf("%02x %02x %s seqid %04x "
93 "(first of %d fragments) %d: ",
94 ap->arc_shost, ap->arc_dhost, arctypename, seqid,
95 (flag + 3) / 2, length);
96 else
97 (void)printf("%02x %02x %s seqid %04x "
98 "(fragment %d) %d: ",
99 ap->arc_shost, ap->arc_dhost, arctypename, seqid,
100 flag/2 + 1, length);
101}
102
103/*
104 * This is the top level routine of the printer. 'p' points
105 * to the ARCNET header of the packet, 'h->ts' is the timestamp,
106 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
107 * is the number of bytes actually captured.
108 */
109u_int
110arcnet_if_print(const struct pcap_pkthdr *h, const u_char *p)
111{
112 u_int caplen = h->caplen;
113 u_int length = h->len;
114 const struct arc_header *ap;
115
116 int phds, flag = 0, archdrlen = 0;
117 u_int seqid = 0;
118 u_char arc_type;
119
120 if (caplen < ARC_HDRLEN) {
121 printf("[|arcnet]");
122 return (caplen);
123 }
124
125 ap = (const struct arc_header *)p;
126 arc_type = ap->arc_type;
127
128 switch (arc_type) {
129 default:
130 phds = 1;
131 break;
132 case ARCTYPE_IP_OLD:
133 case ARCTYPE_ARP_OLD:
134 case ARCTYPE_DIAGNOSE:
135 phds = 0;
136 archdrlen = ARC_HDRLEN;
137 break;
138 }
139
140 if (phds) {
141 if (caplen < ARC_HDRNEWLEN) {
142 arcnet_print(p, length, 0, 0, 0);
143 printf("[|phds]");
144 return (caplen);
145 }
146
147 if (ap->arc_flag == 0xff) {
148 if (caplen < ARC_HDRNEWLEN_EXC) {
149 arcnet_print(p, length, 0, 0, 0);
150 printf("[|phds extended]");
151 return (caplen);
152 }
153 flag = ap->arc_flag2;
154 seqid = ntohs(ap->arc_seqid2);
155 archdrlen = ARC_HDRNEWLEN_EXC;
156 } else {
157 flag = ap->arc_flag;
158 seqid = ntohs(ap->arc_seqid);
159 archdrlen = ARC_HDRNEWLEN;
160 }
161 }
162
163
164 if (eflag)
165 arcnet_print(p, length, phds, flag, seqid);
166
167 /*
168 * Go past the ARCNET header.
169 */
170 length -= archdrlen;
171 caplen -= archdrlen;
172 p += archdrlen;
173
174 if (phds && flag && (flag & 1) == 0) {
175 /*
176 * This is a middle fragment.
177 */
178 return (archdrlen);
179 }
180
181 if (!arcnet_encap_print(arc_type, p, length, caplen))
182 default_print(p, caplen);
183
184 return (archdrlen);
185}
186
187/*
188 * This is the top level routine of the printer. 'p' points
189 * to the ARCNET header of the packet, 'h->ts' is the timestamp,
190 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
191 * is the number of bytes actually captured. It is quite similar
192 * to the non-Linux style printer except that Linux doesn't ever
193 * supply packets that look like exception frames, it always supplies
194 * reassembled packets rather than raw frames, and headers have an
195 * extra "offset" field between the src/dest and packet type.
196 */
197u_int
198arcnet_linux_if_print(const struct pcap_pkthdr *h, const u_char *p)
199{
200 u_int caplen = h->caplen;
201 u_int length = h->len;
202 const struct arc_linux_header *ap;
203
204 int archdrlen = 0;
205 u_char arc_type;
206
207 if (caplen < ARC_LINUX_HDRLEN) {
208 printf("[|arcnet]");
209 return (caplen);
210 }
211
212 ap = (const struct arc_linux_header *)p;
213 arc_type = ap->arc_type;
214
215 switch (arc_type) {
216 default:
217 archdrlen = ARC_LINUX_HDRNEWLEN;
218 if (caplen < ARC_LINUX_HDRNEWLEN) {
219 printf("[|arcnet]");
220 return (caplen);
221 }
222 break;
223 case ARCTYPE_IP_OLD:
224 case ARCTYPE_ARP_OLD:
225 case ARCTYPE_DIAGNOSE:
226 archdrlen = ARC_LINUX_HDRLEN;
227 break;
228 }
229
230 if (eflag)
231 arcnet_print(p, length, 0, 0, 0);
232
233 /*
234 * Go past the ARCNET header.
235 */
236 length -= archdrlen;
237 caplen -= archdrlen;
238 p += archdrlen;
239
240 if (!arcnet_encap_print(arc_type, p, length, caplen))
241 default_print(p, caplen);
242
243 return (archdrlen);
244}
245
246/*
247 * Prints the packet encapsulated in an ARCnet data field,
248 * given the ARCnet system code.
249 *
250 * Returns non-zero if it can do so, zero if the system code is unknown.
251 */
252
253
254static int
255arcnet_encap_print(u_char arctype, const u_char *p,
256 u_int length, u_int caplen)
257{
258 switch (arctype) {
259
260 case ARCTYPE_IP_OLD:
261 case ARCTYPE_IP:
262 ip_print(gndo, p, length);
263 return (1);
264
265#ifdef INET6
266 case ARCTYPE_INET6:
267 ip6_print(p, length);
268 return (1);
269#endif /*INET6*/
270
271 case ARCTYPE_ARP_OLD:
272 case ARCTYPE_ARP:
273 case ARCTYPE_REVARP:
274 arp_print(gndo, p, length, caplen);
275 return (1);
276
277 case ARCTYPE_ATALK: /* XXX was this ever used? */
278 if (vflag)
279 fputs("et1 ", stdout);
280 atalk_print(p, length);
281 return (1);
282
283 case ARCTYPE_IPX:
284 ipx_print(p, length);
285 return (1);
286
287 default:
288 return (0);
289 }
290}
291
292/*
293 * Local Variables:
294 * c-style: bsd
295 * End:
296 */
297