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149 lines
4.0 KiB
C
149 lines
4.0 KiB
C
/*
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* Copyright (c) 1994, 1995, 1996
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char rcsid[] =
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"@(#) $Header: print-atm.c,v 1.7 96/07/23 14:17:21 leres Exp $ (LBL)";
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#endif
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#if __STDC__
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struct mbuf;
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struct rtentry;
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#endif
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcpip.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "addrtoname.h"
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#include "ethertype.h"
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#include "interface.h"
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/*
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* This is the top level routine of the printer. 'p' is the points
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* to the LLC/SNAP header of the packet, 'tvp' is the timestamp,
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* 'length' is the length of the packet off the wire, and 'caplen'
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* is the number of bytes actually captured.
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*/
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void
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atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
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{
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u_int caplen = h->caplen;
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u_int length = h->len;
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u_short ethertype;
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ts_print(&h->ts);
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if (caplen < 8) {
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printf("[|atm]");
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goto out;
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}
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if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
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/*XXX assume 802.6 MAC header from fore driver */
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if (eflag)
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printf("%04x%04x %04x%04x ",
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p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
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p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
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p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
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p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
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p += 20;
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length -= 20;
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caplen -= 20;
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}
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ethertype = p[6] << 8 | p[7];
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if (eflag)
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printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
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p[0], p[1], p[2], /* dsap/ssap/ctrl */
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p[3], p[4], p[5], /* manufacturer's code */
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ethertype);
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/*
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* Some printers want to get back at the ethernet addresses,
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* and/or check that they're not walking off the end of the packet.
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* Rather than pass them all the way down, we set these globals.
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*/
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packetp = p;
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snapend = p + caplen;
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length -= 8;
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caplen -= 8;
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p += 8;
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switch (ethertype) {
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case ETHERTYPE_IP:
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ip_print(p, length);
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break;
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/*XXX this probably isn't right */
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case ETHERTYPE_ARP:
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case ETHERTYPE_REVARP:
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arp_print(p, length, caplen);
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break;
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#ifdef notyet
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case ETHERTYPE_DN:
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decnet_print(p, length, caplen);
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break;
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case ETHERTYPE_ATALK:
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if (vflag)
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fputs("et1 ", stdout);
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atalk_print(p, length);
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break;
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case ETHERTYPE_AARP:
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aarp_print(p, length);
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break;
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case ETHERTYPE_LAT:
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case ETHERTYPE_MOPRC:
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case ETHERTYPE_MOPDL:
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/* default_print for now */
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#endif
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default:
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/* ether_type not known, print raw packet */
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if (!eflag)
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printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
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p[0], p[1], p[2], /* dsap/ssap/ctrl */
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p[3], p[4], p[5], /* manufacturer's code */
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ethertype);
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if (!xflag && !qflag)
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default_print(p, caplen);
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}
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if (xflag)
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default_print(p, caplen);
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out:
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putchar('\n');
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}
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