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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 1.20 2000/12/22 22:45:09 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         ts_print(&h->ts);
59
60         if (caplen < 8) {
61                 printf("[|atm]");
62                 goto out;
63         }
64
65         if (p[4] == 0xaa || p[5] == 0xaa || p[6] == 0x03) {
66                 /* if first 4 bytes are cookie/vpci */
67                 if (eflag) {
68                         printf("%04x ",
69                                p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]);
70                 }
71                 p += 4;
72                 length -= 4;
73                 caplen -= 4;
74         } 
75         else if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
76                 /*XXX assume 802.6 MAC header from fore driver */
77                 if (eflag)
78                         printf("%04x%04x %04x%04x ",
79                                p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
80                                p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
81                                p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
82                                p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
83                 p += 20;
84                 length -= 20;
85                 caplen -= 20;
86         }
87         ethertype = p[6] << 8 | p[7];
88         if (eflag)
89                 printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
90                        p[0], p[1], p[2], /* dsap/ssap/ctrl */
91                        p[3], p[4], p[5], /* manufacturer's code */
92                        ethertype);
93
94         /*
95          * Some printers want to get back at the ethernet addresses,
96          * and/or check that they're not walking off the end of the packet.
97          * Rather than pass them all the way down, we set these globals.
98          */
99         packetp = p;
100         snapend = p + caplen;
101
102         length -= 8;
103         caplen -= 8;
104         p += 8;
105
106         switch (ethertype) {
107
108         case ETHERTYPE_IP:
109                 ip_print(p, length);
110                 break;
111
112 #ifdef INET6
113         case ETHERTYPE_IPV6:
114                 ip6_print(p, length);
115                 break;
116 #endif /*INET6*/
117
118                 /*XXX this probably isn't right */
119         case ETHERTYPE_ARP:
120         case ETHERTYPE_REVARP:
121                 arp_print(p, length, caplen);
122                 break;
123 #ifdef notyet
124         case ETHERTYPE_DN:
125                 decnet_print(p, length, caplen);
126                 break;
127
128         case ETHERTYPE_ATALK:
129                 if (vflag)
130                         fputs("et1 ", stdout);
131                 atalk_print(p, length);
132                 break;
133
134         case ETHERTYPE_AARP:
135                 aarp_print(p, length);
136                 break;
137
138         case ETHERTYPE_LAT:
139         case ETHERTYPE_MOPRC:
140         case ETHERTYPE_MOPDL:
141                 /* default_print for now */
142 #endif
143         default:
144                 /* ether_type not known, forward it to llc_print */
145                 if (!eflag)
146                         printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
147                                packetp[0], packetp[1], packetp[2], /* dsap/ssap/ctrl */
148                                packetp[3], packetp[4], packetp[5], /* manufacturer's code */
149                                ethertype);
150                 if (!xflag && !qflag) {
151                     extracted_ethertype = 0;
152                     /* default_print(p, caplen); */
153                     llc_print(p-8,length+8,caplen+8,"000000","000000", &extracted_ethertype);
154                 }
155         }
156         if (xflag)
157                 default_print(p, caplen);
158  out:
159         putchar('\n');
160 }