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print-token.c (98527) print-token.c (127675)
1/*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
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

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18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
21 * Hacked version of print-ether.c Larry Lile <lile@stdio.com>
22 *
23 * Further tweaked to more closely resemble print-fddi.c
24 * Guy Harris <guy@alum.mit.edu>
25 *
1/*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
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 unchanged lines hidden (view full) ---

18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
21 * Hacked version of print-ether.c Larry Lile <lile@stdio.com>
22 *
23 * Further tweaked to more closely resemble print-fddi.c
24 * Guy Harris <guy@alum.mit.edu>
25 *
26 * $FreeBSD: head/contrib/tcpdump/print-token.c 98527 2002-06-21 00:49:02Z fenner $
26 * $FreeBSD: head/contrib/tcpdump/print-token.c 127675 2004-03-31 14:57:24Z bms $
27 */
28#ifndef lint
27 */
28#ifndef lint
29static const char rcsid[] =
30 "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.13 2001/09/18 15:46:37 fenner Exp $";
29static const char rcsid[] _U_ =
30 "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.22.2.2 2003/11/16 08:51:51 guy Exp $";
31#endif
32
33#ifdef HAVE_CONFIG_H
34#include "config.h"
35#endif
36
31#endif
32
33#ifdef HAVE_CONFIG_H
34#include "config.h"
35#endif
36
37#include <sys/param.h>
38#include <sys/time.h>
39#include <sys/socket.h>
37#include <tcpdump-stdinc.h>
40
38
41#include <netinet/in.h>
42
43#include <pcap.h>
44#include <stdio.h>
45#include <string.h>
46
47#include "interface.h"
48#include "addrtoname.h"
49#include "ethertype.h"
50

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58 memcpy(fdst, (const char *)trp->token_dhost, 6);
59 memcpy(fsrc, (const char *)trp->token_shost, 6);
60}
61
62/*
63 * Print the TR MAC header
64 */
65static inline void
39#include <pcap.h>
40#include <stdio.h>
41#include <string.h>
42
43#include "interface.h"
44#include "addrtoname.h"
45#include "ethertype.h"
46

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54 memcpy(fdst, (const char *)trp->token_dhost, 6);
55 memcpy(fsrc, (const char *)trp->token_shost, 6);
56}
57
58/*
59 * Print the TR MAC header
60 */
61static inline void
66token_print(register const struct token_header *trp, register u_int length,
62token_hdr_print(register const struct token_header *trp, register u_int length,
67 register const u_char *fsrc, register const u_char *fdst)
68{
69 const char *srcname, *dstname;
70
71 srcname = etheraddr_string(fsrc);
72 dstname = etheraddr_string(fdst);
73
74 if (vflag)

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98 "2052",
99 "4472",
100 "8144",
101 "11407",
102 "17800",
103 "??"
104};
105
63 register const u_char *fsrc, register const u_char *fdst)
64{
65 const char *srcname, *dstname;
66
67 srcname = etheraddr_string(fsrc);
68 dstname = etheraddr_string(fdst);
69
70 if (vflag)

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94 "2052",
95 "4472",
96 "8144",
97 "11407",
98 "17800",
99 "??"
100};
101
106/*
107 * This is the top level routine of the printer. 'p' is the points
108 * to the TR header of the packet, 'tvp' is the timestamp,
109 * 'length' is the length of the packet off the wire, and 'caplen'
110 * is the number of bytes actually captured.
111 */
112void
113token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
102u_int
103token_print(const u_char *p, u_int length, u_int caplen)
114{
104{
115 u_int caplen = h->caplen;
116 u_int length = h->len;
117 const struct token_header *trp;
118 u_short extracted_ethertype;
119 struct ether_header ehdr;
105 const struct token_header *trp;
106 u_short extracted_ethertype;
107 struct ether_header ehdr;
120 u_int route_len = 0, seg;
108 u_int route_len = 0, hdr_len = TOKEN_HDRLEN;
109 int seg;
121
122 trp = (const struct token_header *)p;
123
110
111 trp = (const struct token_header *)p;
112
124 ++infodelay;
125 ts_print(&h->ts);
126
127 if (caplen < TOKEN_HDRLEN) {
128 printf("[|token-ring]");
113 if (caplen < TOKEN_HDRLEN) {
114 printf("[|token-ring]");
129 goto out;
115 return hdr_len;
130 }
116 }
117
131 /*
132 * Get the TR addresses into a canonical form
133 */
134 extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
118 /*
119 * Get the TR addresses into a canonical form
120 */
121 extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
135 /*
136 * Some printers want to get back at the ethernet addresses,
137 * and/or check that they're not walking off the end of the packet.
138 * Rather than pass them all the way down, we set these globals.
139 */
140 snapend = p + caplen;
141 /*
142 * Actually, the only printers that use packetp are print-arp.c
143 * and print-bootp.c, and they assume that packetp points to an
144 * Ethernet header. The right thing to do is to fix them to know
145 * which link type is in use when they excavate. XXX
146 */
147 packetp = (u_char *)&ehdr;
148
149 /* Adjust for source routing information in the MAC header */
150 if (IS_SOURCE_ROUTED(trp)) {
151 /* Clear source-routed bit */
152 *ESRC(&ehdr) &= 0x7f;
153
154 if (eflag)
122
123 /* Adjust for source routing information in the MAC header */
124 if (IS_SOURCE_ROUTED(trp)) {
125 /* Clear source-routed bit */
126 *ESRC(&ehdr) &= 0x7f;
127
128 if (eflag)
155 token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
129 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
156
157 route_len = RIF_LENGTH(trp);
158 if (vflag) {
159 printf("%s ", broadcast_indicator[BROADCAST(trp)]);
160 printf("%s", direction[DIRECTION(trp)]);
130
131 route_len = RIF_LENGTH(trp);
132 if (vflag) {
133 printf("%s ", broadcast_indicator[BROADCAST(trp)]);
134 printf("%s", direction[DIRECTION(trp)]);
161
135
162 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
163 printf(" [%d:%d]", RING_NUMBER(trp, seg),
164 BRIDGE_NUMBER(trp, seg));
165 } else {
166 printf("rt = %x", ntohs(trp->token_rcf));
136 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
137 printf(" [%d:%d]", RING_NUMBER(trp, seg),
138 BRIDGE_NUMBER(trp, seg));
139 } else {
140 printf("rt = %x", ntohs(trp->token_rcf));
167
141
168 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
169 printf(":%x", ntohs(trp->token_rseg[seg]));
170 }
171 printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
172 } else {
173 if (eflag)
142 for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
143 printf(":%x", ntohs(trp->token_rseg[seg]));
144 }
145 printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
146 } else {
147 if (eflag)
174 token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
148 token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
175 }
176
177 /* Skip over token ring MAC header and routing information */
149 }
150
151 /* Skip over token ring MAC header and routing information */
178 length -= TOKEN_HDRLEN + route_len;
179 p += TOKEN_HDRLEN + route_len;
180 caplen -= TOKEN_HDRLEN + route_len;
152 hdr_len += route_len;
153 length -= hdr_len;
154 p += hdr_len;
155 caplen -= hdr_len;
181
182 /* Frame Control field determines interpretation of packet */
183 extracted_ethertype = 0;
184 if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
185 /* Try to print the LLC-layer header & higher layers */
186 if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
187 &extracted_ethertype) == 0) {
188 /* ether_type not known, print raw packet */
189 if (!eflag)
156
157 /* Frame Control field determines interpretation of packet */
158 extracted_ethertype = 0;
159 if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
160 /* Try to print the LLC-layer header & higher layers */
161 if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr),
162 &extracted_ethertype) == 0) {
163 /* ether_type not known, print raw packet */
164 if (!eflag)
190 token_print(trp,
165 token_hdr_print(trp,
191 length + TOKEN_HDRLEN + route_len,
192 ESRC(&ehdr), EDST(&ehdr));
193 if (extracted_ethertype) {
194 printf("(LLC %s) ",
195 etherproto_string(htons(extracted_ethertype)));
196 }
197 if (!xflag && !qflag)
198 default_print(p, caplen);
199 }
200 } else {
201 /* Some kinds of TR packet we cannot handle intelligently */
202 /* XXX - dissect MAC packets if frame type is 0 */
203 if (!eflag)
166 length + TOKEN_HDRLEN + route_len,
167 ESRC(&ehdr), EDST(&ehdr));
168 if (extracted_ethertype) {
169 printf("(LLC %s) ",
170 etherproto_string(htons(extracted_ethertype)));
171 }
172 if (!xflag && !qflag)
173 default_print(p, caplen);
174 }
175 } else {
176 /* Some kinds of TR packet we cannot handle intelligently */
177 /* XXX - dissect MAC packets if frame type is 0 */
178 if (!eflag)
204 token_print(trp, length + TOKEN_HDRLEN + route_len,
179 token_hdr_print(trp, length + TOKEN_HDRLEN + route_len,
205 ESRC(&ehdr), EDST(&ehdr));
206 if (!xflag && !qflag)
207 default_print(p, caplen);
208 }
180 ESRC(&ehdr), EDST(&ehdr));
181 if (!xflag && !qflag)
182 default_print(p, caplen);
183 }
209 if (xflag)
210 default_print(p, caplen);
211out:
212 putchar('\n');
213 --infodelay;
214 if (infoprint)
215 info(0);
184 return (hdr_len);
216}
185}
186
187/*
188 * This is the top level routine of the printer. 'p' points
189 * to the TR header of the packet, 'h->ts' is the timestamp,
190 * 'h->length' is the length of the packet off the wire, and 'h->caplen'
191 * is the number of bytes actually captured.
192 */
193u_int
194token_if_print(const struct pcap_pkthdr *h, const u_char *p)
195{
196 return (token_print(p, h->len, h->caplen));
197}