contrib/tcpdump-3.9/print-eap.c

   1 /*
   2  * Copyright (c) 2004 - Michael Richardson <mcr@xelerance.com>
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that: (1) source code distributions
   6  * retain the above copyright notice and this paragraph in its entirety, (2)
   7  * distributions including binary code include the above copyright notice and
   8  * this paragraph in its entirety in the documentation or other materials
   9  * provided with the distribution, and (3) all advertising materials mentioning
  10  * features or use of this software display the following acknowledgement:
  11  * ``This product includes software developed by the University of California,
  12  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  13  * the University nor the names of its contributors may be used to endorse
  14  * or promote products derived from this software without specific prior
  15  * written permission.
  16  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  17  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  19  *
  20  * Format and print bootp packets.
  21  */
  22
  23 #ifndef lint
  24 static const char rcsid[] _U_ =
  25     "@(#) $Header: /tcpdump/master/tcpdump/print-eap.c,v 1.3 2004/04/23 19:03:39 mcr Exp $";
  26 #endif
  27
  28 #ifdef HAVE_CONFIG_H
  29 #include "config.h"
  30 #endif
  31
  32 #include <tcpdump-stdinc.h>
  33
  34 #include <stdio.h>
  35 #include <string.h>
  36
  37 #include "netdissect.h"
  38 #include "addrtoname.h"
  39 #include "extract.h"
  40 #include "ether.h"
  41
  42 struct eap_packet_t {
  43         unsigned char   code;
  44         unsigned char   id;
  45         unsigned char   length[2];
  46         unsigned char   data[1];
  47 };
  48
  49 /*
  50  * Print bootp requests
  51  */
  52 void
  53 eap_print(netdissect_options *ndo,
  54           register const u_char *cp,
  55           u_int length _U_)
  56 {
  57         const struct eap_packet_t *eap;
  58
  59         eap = (const struct eap_packet_t *)cp;
  60         ND_TCHECK(eap->data);
  61
  62         ND_PRINT((ndo, "EAP code=%u id=%u length=%u ",
  63                   eap->code, eap->id, (eap->length[0]<<8) + eap->length[1]));
  64
  65         if (!ndo->ndo_vflag)
  66             return;
  67
  68 trunc:
  69         ;
  70 }
  71