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[FreeBSD/FreeBSD.git] / contrib / tcpdump / print-atm.c
1 /*
2  * Copyright (c) 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  * $FreeBSD$
22  */
23 #ifndef lint
24 static const char rcsid[] =
25     "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.21 2001/07/05 18:54:14 guy Exp $ (LBL)";
26 #endif
27
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31
32 #include <sys/param.h>
33 #include <sys/time.h>
34 #include <sys/socket.h>
35
36 #include <netinet/in.h>
37
38 #include <stdio.h>
39 #include <pcap.h>
40
41 #include "interface.h"
42 #include "addrtoname.h"
43 #include "ethertype.h"
44
45 /*
46  * This is the top level routine of the printer.  'p' is the points
47  * to the LLC/SNAP header of the packet, 'tvp' is the timestamp,
48  * 'length' is the length of the packet off the wire, and 'caplen'
49  * is the number of bytes actually captured.
50  */
51 void
52 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
53 {
54         u_int caplen = h->caplen;
55         u_int length = h->len;
56         u_short ethertype, extracted_ethertype;
57
58         ++infodelay;
59         ts_print(&h->ts);
60
61         if (caplen < 8) {
62                 printf("[|atm]");
63                 goto out;
64         }
65
66         if (p[4] == 0xaa || p[5] == 0xaa || p[6] == 0x03) {
67                 /* if first 4 bytes are cookie/vpci */
68                 if (eflag) {
69                         printf("%04x ",
70                                p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]);
71                 }
72                 p += 4;
73                 length -= 4;
74                 caplen -= 4;
75         } 
76         else if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
77                 /*XXX assume 802.6 MAC header from fore driver */
78                 if (eflag)
79                         printf("%04x%04x %04x%04x ",
80                                p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
81                                p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
82                                p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
83                                p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
84                 p += 20;
85                 length -= 20;
86                 caplen -= 20;
87         }
88         ethertype = p[6] << 8 | p[7];
89         if (eflag)
90                 printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
91                        p[0], p[1], p[2], /* dsap/ssap/ctrl */
92                        p[3], p[4], p[5], /* manufacturer's code */
93                        ethertype);
94
95         /*
96          * Some printers want to get back at the ethernet addresses,
97          * and/or check that they're not walking off the end of the packet.
98          * Rather than pass them all the way down, we set these globals.
99          */
100         packetp = p;
101         snapend = p + caplen;
102
103         length -= 8;
104         caplen -= 8;
105         p += 8;
106
107         switch (ethertype) {
108
109         case ETHERTYPE_IP:
110                 ip_print(p, length);
111                 break;
112
113 #ifdef INET6
114         case ETHERTYPE_IPV6:
115                 ip6_print(p, length);
116                 break;
117 #endif /*INET6*/
118
119                 /*XXX this probably isn't right */
120         case ETHERTYPE_ARP:
121         case ETHERTYPE_REVARP:
122                 arp_print(p, length, caplen);
123                 break;
124 #ifdef notyet
125         case ETHERTYPE_DN:
126                 decnet_print(p, length, caplen);
127                 break;
128
129         case ETHERTYPE_ATALK:
130                 if (vflag)
131                         fputs("et1 ", stdout);
132                 atalk_print(p, length);
133                 break;
134
135         case ETHERTYPE_AARP:
136                 aarp_print(p, length);
137                 break;
138
139         case ETHERTYPE_LAT:
140         case ETHERTYPE_MOPRC:
141         case ETHERTYPE_MOPDL:
142                 /* default_print for now */
143 #endif
144         default:
145                 /* ether_type not known, forward it to llc_print */
146                 if (!eflag)
147                         printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
148                                packetp[0], packetp[1], packetp[2], /* dsap/ssap/ctrl */
149                                packetp[3], packetp[4], packetp[5], /* manufacturer's code */
150                                ethertype);
151                 if (!xflag && !qflag) {
152                     extracted_ethertype = 0;
153                     /* default_print(p, caplen); */
154                     llc_print(p-8,length+8,caplen+8,"000000","000000", &extracted_ethertype);
155                 }
156         }
157         if (xflag)
158                 default_print(p, caplen);
159  out:
160         putchar('\n');
161         --infodelay;
162         if (infoprint)
163                 info(0);
164 }