The Tcpdump Group git mirrors - tcpdump/blob - print-netbios.c

   1 /*
   2  * Copyright (c) 1994, 1995, 1996
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that: (1) source code distributions
   7  * retain the above copyright notice and this paragraph in its entirety, (2)
   8  * distributions including binary code include the above copyright notice and
   9  * this paragraph in its entirety in the documentation or other materials
  10  * provided with the distribution, and (3) all advertising materials mentioning
  11  * features or use of this software display the following acknowledgement:
  12  * ``This product includes software developed by the University of California,
  13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  14  * the University nor the names of its contributors may be used to endorse
  15  * or promote products derived from this software without specific prior
  16  * written permission.
  17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  20  *
  21  * Format and print NETBIOS packets.
  22  * Contributed by Brad Parker (brad@fcr.com).
  23  */
  24
  25 #ifndef lint
  26 static const char rcsid[] _U_ =
  27     "@(#) $Header: /tcpdump/master/tcpdump/print-netbios.c,v 1.20 2003-11-16 09:36:29 guy Exp $";
  28 #endif
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include <tcpdump-stdinc.h>
  35
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 #include "interface.h"
  41 #include "addrtoname.h"
  42 #include "extract.h"
  43
  44 struct p8022Hdr {
  45     u_char      dsap;
  46     u_char      ssap;
  47     u_char      flags;
  48 };
  49
  50 #define p8022Size       3               /* min 802.2 header size */
  51
  52 #define UI              0x03            /* 802.2 flags */
  53
  54 /*
  55  * Print NETBIOS packets.
  56  */
  57 void
  58 netbios_print(struct p8022Hdr *nb, u_int length)
  59 {
  60         if (length < p8022Size) {
  61                 (void)printf(" truncated-netbios %d", length);
  62                 return;
  63         }
  64
  65         if (nb->flags == UI) {
  66             (void)printf("802.1 UI ");
  67         } else {
  68             (void)printf("802.1 CONN ");
  69         }
  70
  71         if ((u_char *)(nb + 1) > snapend) {
  72                 printf(" [|netbios]");
  73                 return;
  74         }
  75
  76 /*
  77         netbios_decode(nb, (u_char *)nb + p8022Size, length - p8022Size);
  78 */
  79 }
  80
  81 #ifdef never
  82         (void)printf("%s.%d > ",
  83                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  84                      EXTRACT_16BITS(ipx->srcSkt));
  85
  86         (void)printf("%s.%d:",
  87                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  88                      EXTRACT_16BITS(ipx->dstSkt));
  89
  90         if ((u_char *)(ipx + 1) > snapend) {
  91                 printf(" [|ipx]");
  92                 return;
  93         }
  94
  95         /* take length from ipx header */
  96         length = EXTRACT_16BITS(&ipx->length);
  97
  98         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  99 #endif
 100