tcpdump.tproj/print-atm.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1994, 1995, 1996
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that: (1) source code distributions
  30  * retain the above copyright notice and this paragraph in its entirety, (2)
  31  * distributions including binary code include the above copyright notice and
  32  * this paragraph in its entirety in the documentation or other materials
  33  * provided with the distribution, and (3) all advertising materials mentioning
  34  * features or use of this software display the following acknowledgement:
  35  * ``This product includes software developed by the University of California,
  36  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  37  * the University nor the names of its contributors may be used to endorse
  38  * or promote products derived from this software without specific prior
  39  * written permission.
  40  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  41  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  42  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  43  */
  44 #ifndef lint
  45 static const char rcsid[] =
  46     "@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-atm.c,v 1.1.1.1 1999/05/02 03:58:33 wsanchez Exp $ (LBL)";
  47 #endif
  48
  49 #include <sys/param.h>
  50 #include <sys/time.h>
  51 #include <sys/socket.h>
  52
  53 #if __STDC__
  54 struct mbuf;
  55 struct rtentry;
  56 #endif
  57 #include <net/if.h>
  58
  59 #include <netinet/in.h>
  60 #include <netinet/if_ether.h>
  61 #include <netinet/in_systm.h>
  62 #include <netinet/ip.h>
  63 #include <netinet/ip_var.h>
  64 #include <netinet/udp.h>
  65 #include <netinet/udp_var.h>
  66 #include <netinet/tcp.h>
  67 #include <netinet/tcpip.h>
  68
  69 #include <stdio.h>
  70 #include <pcap.h>
  71
  72 #include "addrtoname.h"
  73 #include "ethertype.h"
  74 #include "interface.h"
  75
  76 /*
  77  * This is the top level routine of the printer.  'p' is the points
  78  * to the LLC/SNAP header of the packet, 'tvp' is the timestamp,
  79  * 'length' is the length of the packet off the wire, and 'caplen'
  80  * is the number of bytes actually captured.
  81  */
  82 void
  83 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
  84 {
  85         u_int caplen = h->caplen;
  86         u_int length = h->len;
  87         u_short ethertype;
  88
  89         ts_print(&h->ts);
  90
  91         if (caplen < 8) {
  92                 printf("[|atm]");
  93                 goto out;
  94         }
  95         if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) {
  96                 /*XXX assume 802.6 MAC header from fore driver */
  97                 if (eflag)
  98                         printf("%04x%04x %04x%04x ",
  99                                p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3],
 100                                p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7],
 101                                p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11],
 102                                p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]);
 103                 p += 20;
 104                 length -= 20;
 105                 caplen -= 20;
 106         }
 107         ethertype = p[6] << 8 | p[7];
 108         if (eflag)
 109                 printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
 110                        p[0], p[1], p[2], /* dsap/ssap/ctrl */
 111                        p[3], p[4], p[5], /* manufacturer's code */
 112                        ethertype);
 113
 114         /*
 115          * Some printers want to get back at the ethernet addresses,
 116          * and/or check that they're not walking off the end of the packet.
 117          * Rather than pass them all the way down, we set these globals.
 118          */
 119         packetp = p;
 120         snapend = p + caplen;
 121
 122         length -= 8;
 123         caplen -= 8;
 124         p += 8;
 125
 126         switch (ethertype) {
 127
 128         case ETHERTYPE_IP:
 129                 ip_print(p, length);
 130                 break;
 131
 132                 /*XXX this probably isn't right */
 133         case ETHERTYPE_ARP:
 134         case ETHERTYPE_REVARP:
 135                 arp_print(p, length, caplen);
 136                 break;
 137 #ifdef notyet
 138         case ETHERTYPE_DN:
 139                 decnet_print(p, length, caplen);
 140                 break;
 141
 142         case ETHERTYPE_ATALK:
 143                 if (vflag)
 144                         fputs("et1 ", stdout);
 145                 atalk_print(p, length);
 146                 break;
 147
 148         case ETHERTYPE_AARP:
 149                 aarp_print(p, length);
 150                 break;
 151
 152         case ETHERTYPE_LAT:
 153         case ETHERTYPE_MOPRC:
 154         case ETHERTYPE_MOPDL:
 155                 /* default_print for now */
 156 #endif
 157         default:
 158                 /* ether_type not known, print raw packet */
 159                 if (!eflag)
 160                         printf("%02x %02x %02x %02x-%02x-%02x %04x: ",
 161                                p[0], p[1], p[2], /* dsap/ssap/ctrl */
 162                                p[3], p[4], p[5], /* manufacturer's code */
 163                                ethertype);
 164                 if (!xflag && !qflag)
 165                         default_print(p, caplen);
 166         }
 167         if (xflag)
 168                 default_print(p, caplen);
 169  out:
 170         putchar('\n');
 171 }