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/* $OpenBSD: print-atm.c,v 1.15 2021/12/01 18:28:45 deraadt Exp $ */
/*
* Copyright (c) 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <sys/time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>
#include <stdio.h>
#include <pcap.h>
#include "interface.h"
#include "addrtoname.h"
#include "ethertype.h"
/*
* This is the top level routine of the printer. 'p' is the points
* to the LLC/SNAP header of the packet, 'tvp' is the timestamp,
* 'length' is the length of the packet off the wire, and 'caplen'
* is the number of bytes actually captured.
*/
void
atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
{
u_int caplen = h->caplen;
u_int length = h->len;
u_short ethertype;
ts_print(&h->ts);
if (caplen < 8) {
printf("[|atm]");
goto out;
}
if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
/*XXX assume 802.6 MAC header from fore driver */
#define MIN_ATM_8026_HDRLEN (20 + 8)
if (caplen < MIN_ATM_8026_HDRLEN) {
printf("[|atm]");
goto out;
}
if (eflag)
printf("%04x%04x %04x%04x ",
p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
p += 20;
length -= 20;
caplen -= 20;
}
ethertype = p[6] << 8 | p[7];
if (eflag)
printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
p[0], p[1], p[2], /* dsap/ssap/ctrl */
p[3], p[4], p[5], /* manufacturer's code */
ethertype);
/*
* Some printers want to get back at the ethernet addresses,
* and/or check that they're not walking off the end of the packet.
* Rather than pass them all the way down, we set these globals.
*/
packetp = p;
snapend = p + caplen;
length -= 8;
caplen -= 8;
p += 8;
switch (ethertype) {
case ETHERTYPE_IP:
ip_print(p, length);
break;
case ETHERTYPE_IPV6:
ip6_print(p, length);
break;
/*XXX this probably isn't right */
case ETHERTYPE_ARP:
case ETHERTYPE_REVARP:
arp_print(p, length, caplen);
break;
#ifdef notyet
case ETHERTYPE_DN:
decnet_print(p, length, caplen);
break;
case ETHERTYPE_ATALK:
if (vflag)
printf("et1 ");
atalk_print(p, length);
break;
case ETHERTYPE_AARP:
aarp_print(p, length);
break;
case ETHERTYPE_LAT:
case ETHERTYPE_MOPRC:
case ETHERTYPE_MOPDL:
/* default_print for now */
#endif
default:
/* ether_type not known, print raw packet */
if (!eflag)
printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
p[0], p[1], p[2], /* dsap/ssap/ctrl */
p[3], p[4], p[5], /* manufacturer's code */
ethertype);
if (!xflag && !qflag)
default_print(p, caplen);
}
if (xflag)
default_print(p, caplen);
out:
putchar('\n');
}
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