usr.sbin/i4b/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 2000/02/13 15:26:52 hm Exp $
  31  *
  32  * $FreeBSD: src/usr.sbin/i4b/isdntrace/unknownl3.c,v 1.1.2.1 2001/08/01 23:07:06 obrien Exp $
  33  * $DragonFly: src/usr.sbin/i4b/isdntrace/unknownl3.c,v 1.2 2003/06/17 04:29:55 dillon Exp $
  34  *
  35  *      last edit-date: [Sun Feb 13 14:16:44 2000]
  36  *
  37  *---------------------------------------------------------------------------*/
  38
  39 #include "trace.h"
  40
  41 /*---------------------------------------------------------------------------*
  42  *      decode unknown protocol
  43  *---------------------------------------------------------------------------*/
  44 void
  45 decode_unknownl3(char *pbuf, int n, int off, unsigned char *buf, int raw)
  46 {
  47         int pd;
  48         int j;
  49         int i;
  50
  51         if(n <= 0)
  52                 return;
  53
  54         *pbuf = '\0';
  55
  56         if(raw)
  57         {
  58                 for (i = 0; i < n; i += 16)
  59                 {
  60                         sprintf((pbuf+strlen(pbuf)),"Dump:%.3d  ", i+off);
  61                         for (j = 0; j < 16; j++)
  62                                 if (i + j < n)
  63                                         sprintf((pbuf+strlen(pbuf)),"%02x ", buf[i + j]);
  64                                 else
  65                                         sprintf((pbuf+strlen(pbuf)),"   ");
  66                         sprintf((pbuf+strlen(pbuf)),"      ");
  67                         for (j = 0; j < 16 && i + j < n; j++)
  68                                 if (isprint(buf[i + j]))
  69                                         sprintf((pbuf+strlen(pbuf)),"%c", buf[i + j]);
  70                                 else
  71                                         sprintf((pbuf+strlen(pbuf)),".");
  72                         sprintf((pbuf+strlen(pbuf)),"\n");
  73                 }
  74         }
  75
  76         i = 0;
  77
  78         /* protocol discriminator */
  79
  80         pd = buf[i];
  81
  82         sprintf((pbuf+strlen(pbuf)), "PD%02X: ", pd);
  83
  84         if(pd >= 0x00 && pd <= 0x07)
  85                 sprintf((pbuf+strlen(pbuf)), "pd=User-User (0x%02x)",pd);
  86         else if(pd == 0x08)
  87                 sprintf((pbuf+strlen(pbuf)), "pd=Q.931/I.451");
  88         else if(pd >= 0x10 && pd <= 0x3f)
  89                 sprintf((pbuf+strlen(pbuf)), "pd=Other Layer 3 or X.25 (0x%02x)",pd);
  90         else if(pd >= 0x40 && pd <= 0x4f)
  91                 sprintf((pbuf+strlen(pbuf)), "pd=National Use (0x%02x)",pd);
  92         else if(pd >= 0x50 && pd <= 0xfe)
  93                 sprintf((pbuf+strlen(pbuf)), "pd=Other Layer 3 or X.25 (0x%02x)",pd);
  94         else
  95                 sprintf((pbuf+strlen(pbuf)), "pd=Reserved (0x%02x)",pd);
  96
  97         sprintf((pbuf+strlen(pbuf)), "\n     [");
  98         for(j = 0; j < (n-i); j++)
  99         {
 100                 sprintf((pbuf+strlen(pbuf)),"0x%02x ", buf[j+i]);
 101         }
 102
 103         sprintf((pbuf+strlen(pbuf)),"]\n");
 104 }
 105
 106 /* EOF */
 107