tcpdump.tproj/print-ppp.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) 1990, 1991, 1993, 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
  45 #ifndef lint
  46 static const char rcsid[] =
  47     "@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-ppp.c,v 1.1.1.1 1999/05/02 03:58:34 wsanchez Exp $ (LBL)";
  48 #endif
  49
  50 #ifdef PPP
  51 #include <sys/param.h>
  52 #include <sys/time.h>
  53 #include <sys/socket.h>
  54 #include <sys/file.h>
  55 #include <sys/ioctl.h>
  56
  57 #if __STDC__
  58 struct mbuf;
  59 struct rtentry;
  60 #endif
  61 #include <net/if.h>
  62
  63 #include <netinet/in.h>
  64 #include <netinet/in_systm.h>
  65 #include <netinet/ip.h>
  66
  67 #include <ctype.h>
  68 #include <netdb.h>
  69 #include <pcap.h>
  70 #include <signal.h>
  71 #include <stdio.h>
  72
  73 #include "interface.h"
  74 #include "addrtoname.h"
  75
  76 /* XXX This goes somewhere else. */
  77 #define PPP_HDRLEN 4
  78
  79 void
  80 ppp_if_print(u_char *user, const struct pcap_pkthdr *h,
  81              register const u_char *p)
  82 {
  83         register u_int length = h->len;
  84         register u_int caplen = h->caplen;
  85         const struct ip *ip;
  86
  87         ts_print(&h->ts);
  88
  89         if (caplen < PPP_HDRLEN) {
  90                 printf("[|ppp]");
  91                 goto out;
  92         }
  93
  94         /*
  95          * Some printers want to get back at the link level 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         if (eflag)
 103                 printf("%c %4d %02x %04x: ", p[0] ? 'O' : 'I', length,
 104                        p[1], ntohs(*(u_short *)&p[2]));
 105
 106         length -= PPP_HDRLEN;
 107         ip = (struct ip *)(p + PPP_HDRLEN);
 108         ip_print((const u_char *)ip, length);
 109
 110         if (xflag)
 111                 default_print((const u_char *)ip, caplen - PPP_HDRLEN);
 112 out:
 113         putchar('\n');
 114 }
 115 #else
 116 #include <sys/types.h>
 117 #include <sys/time.h>
 118
 119 #include <stdio.h>
 120
 121 #include "interface.h"
 122 void
 123 ppp_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
 124 {
 125         error("not configured for ppp");
 126         /* NOTREACHED */
 127 }
 128 #endif