print-atm.c revision 21262 
1/*
2 * Copyright (c) 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 * 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 char rcsid[] =
23    "@(#) $Header: print-atm.c,v 1.7 96/07/23 14:17:21 leres Exp $ (LBL)";
24#endif
25
26#include <sys/param.h>
27#include <sys/time.h>
28#include <sys/socket.h>
29
30#if __STDC__
31struct mbuf;
32struct rtentry;
33#endif
34#include <net/if.h>
35
36#include <netinet/in.h>
37#include <net/ethernet.h>
38#include <netinet/in_systm.h>
39#include <netinet/ip.h>
40#include <netinet/ip_var.h>
41#include <netinet/udp.h>
42#include <netinet/udp_var.h>
43#include <netinet/tcp.h>
44#include <netinet/tcpip.h>
45
46#include <stdio.h>
47#include <pcap.h>
48
49#include "addrtoname.h"
50#include "ethertype.h"
51#include "interface.h"
52
53/*
54 * This is the top level routine of the printer.  'p' is the points
55 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp,
56 * 'length' is the length of the packet off the wire, and 'caplen'
57 * is the number of bytes actually captured.
58 */
59void
60atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
61{
62	u_int caplen = h->caplen;
63	u_int length = h->len;
64	u_short ethertype;
65
66	ts_print(&h->ts);
67
68	if (caplen < 8) {
69		printf("[|atm]");
70		goto out;
71	}
72	if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
73		/*XXX assume 802.6 MAC header from fore driver */
74		if (eflag)
75			printf("%04x%04x %04x%04x ",
76			       p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
77			       p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
78			       p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
79			       p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
80		p += 20;
81		length -= 20;
82		caplen -= 20;
83	}
84	ethertype = p[6] << 8 | p[7];
85	if (eflag)
86		printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
87		       p[0], p[1], p[2], /* dsap/ssap/ctrl */
88		       p[3], p[4], p[5], /* manufacturer's code */
89		       ethertype);
90
91	/*
92	 * Some printers want to get back at the ethernet addresses,
93	 * and/or check that they're not walking off the end of the packet.
94	 * Rather than pass them all the way down, we set these globals.
95	 */
96	packetp = p;
97	snapend = p + caplen;
98
99	length -= 8;
100	caplen -= 8;
101	p += 8;
102
103	switch (ethertype) {
104
105	case ETHERTYPE_IP:
106		ip_print(p, length);
107		break;
108
109		/*XXX this probably isn't right */
110	case ETHERTYPE_ARP:
111	case ETHERTYPE_REVARP:
112		arp_print(p, length, caplen);
113		break;
114#ifdef notyet
115	case ETHERTYPE_DN:
116		decnet_print(p, length, caplen);
117		break;
118
119	case ETHERTYPE_ATALK:
120		if (vflag)
121			fputs("et1 ", stdout);
122		atalk_print(p, length);
123		break;
124
125	case ETHERTYPE_AARP:
126		aarp_print(p, length);
127		break;
128
129	case ETHERTYPE_LAT:
130	case ETHERTYPE_MOPRC:
131	case ETHERTYPE_MOPDL:
132		/* default_print for now */
133#endif
134	default:
135		/* ether_type not known, print raw packet */
136		if (!eflag)
137			printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
138			       p[0], p[1], p[2], /* dsap/ssap/ctrl */
139			       p[3], p[4], p[5], /* manufacturer's code */
140			       ethertype);
141		if (!xflag && !qflag)
142			default_print(p, caplen);
143	}
144	if (xflag)
145		default_print(p, caplen);
146 out:
147	putchar('\n');
148}
149