_vjc.c

This directory contains source code for tcpdump, a tool for network monitoring and data acquisition

/*
 * Copyright (c) 1990, 1991, 1993, 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.
 */

#if 0
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-vjc.c,v 1.2.2.1 2000/01/11 06:58:28 fenner Exp $ (LBL)";
#endif

#include <stdio.h>
#include <ctype.h>

#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/ioctl.h>

#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>

#include <netdb.h>
#include <pcap.h>

#include "interfac.h"
#include "a2name.h"

#ifdef PPP

int vjc_print (const char *bp, u_int length, u_short proto)
{
  int i;

  switch (bp[0] & 0xf0)
  {
    case TYPE_IP:
         if (eflag)
            PRINTF ("(vjc type=IP) ");
         return PPP_IP;

    case TYPE_UNCOMPRESSED_TCP:
         if (eflag)
            PRINTF ("(vjc type=raw TCP) ");
         return PPP_IP;

    case TYPE_COMPRESSED_TCP:
         if (eflag)
            PRINTF ("(vjc type=compressed TCP) ");

         for (i = 0; i < 8; i++)
             if (bp[1] & (0x80 >> i))
                PRINTF ("%c", "?CI?SAWU"[i]);
         if (bp[1])
            PUTCHAR (' ');
         PRINTF ("C=0x%02x ", bp[2]);
         PRINTF ("sum=0x%04x ", *(u_short *) & bp[3]);
         return -1;

    case TYPE_ERROR:
         if (eflag)
            PUTS ("(vjc type=error) ");
         return -1;

    default:
         if (eflag)
            PRINTF ("(vjc type=0x%02x) ", bp[0] & 0xf0);
         return -1;
  }
}
#endif