usr.sbin/isdn/isdntrace/unknownl3.c

   1 /*
   2  * Copyright (c) 2000 Hellmuth Michaelis. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  *---------------------------------------------------------------------------
  26  *
  27  *      unknownl3.c - print L3 packets with unknown PD
  28  *      ----------------------------------------------
  29  *
  30  *      $Id: unknownl3.c,v 1.2 2003/10/06 09:43:28 itojun Exp $
  31  *
  32  * $FreeBSD$
  33  *
  34  *      last edit-date: [Sun Feb 13 14:16:44 2000]
  35  *
  36  *---------------------------------------------------------------------------*/
  37
  38 #include "trace.h"
  39
  40 /*---------------------------------------------------------------------------*
  41  *      decode unknown protocol
  42  *---------------------------------------------------------------------------*/
  43 void
  44 decode_unknownl3(char *pbuf, int n, int off, unsigned char *buf, int raw)
  45 {
  46         int pd;
  47         int j;
  48         int i;
  49
  50         if (n <= 0)
  51                 return;
  52
  53         *pbuf = '\0';
  54
  55         if (raw)
  56         {
  57                 for (i = 0; i < n; i += 16)
  58                 {
  59                         sprintf((pbuf+strlen(pbuf)),"Dump:%.3d  ", i+off);
  60                         for (j = 0; j < 16; j++)
  61                                 if (i + j < n)
  62                                         sprintf((pbuf+strlen(pbuf)),"%02x ", buf[i + j]);
  63                                 else
  64                                         sprintf((pbuf+strlen(pbuf)),"   ");
  65                         sprintf((pbuf+strlen(pbuf)),"      ");
  66                         for (j = 0; j < 16 && i + j < n; j++)
  67                                 if (isprint(buf[i + j]))
  68                                         sprintf((pbuf+strlen(pbuf)),"%c", buf[i + j]);
  69                                 else
  70                                         sprintf((pbuf+strlen(pbuf)),".");
  71                         sprintf((pbuf+strlen(pbuf)),"\n");
  72                 }
  73         }
  74
  75         i = 0;
  76
  77         /* protocol discriminator */
  78
  79         pd = buf[i];
  80
  81         sprintf((pbuf+strlen(pbuf)), "PD%02X: ", pd);
  82
  83         if (pd >= 0x00 && pd <= 0x07)
  84                 sprintf((pbuf+strlen(pbuf)), "pd=User-User (0x%02x)",pd);
  85         else if (pd == 0x08)
  86                 sprintf((pbuf+strlen(pbuf)), "pd=Q.931/I.451");
  87         else if (pd >= 0x10 && pd <= 0x3f)
  88                 sprintf((pbuf+strlen(pbuf)), "pd=Other Layer 3 or X.25 (0x%02x)",pd);
  89         else if (pd >= 0x40 && pd <= 0x4f)
  90                 sprintf((pbuf+strlen(pbuf)), "pd=National Use (0x%02x)",pd);
  91         else if (pd >= 0x50 && pd <= 0xfe)
  92                 sprintf((pbuf+strlen(pbuf)), "pd=Other Layer 3 or X.25 (0x%02x)",pd);
  93         else
  94                 sprintf((pbuf+strlen(pbuf)), "pd=Reserved (0x%02x)",pd);
  95
  96         sprintf((pbuf+strlen(pbuf)), "\n     [");
  97         for (j = 0; j < (n - i); j++)
  98         {
  99                 sprintf((pbuf+strlen(pbuf)),"0x%02x ", buf[j+i]);
 100         }
 101
 102         sprintf((pbuf+strlen(pbuf)),"]\n");
 103 }
 104
 105 /* EOF */
 106