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

   1 /*
   2  * Copyright (C) 2000, Richard Sharpe
   3  *
   4  * This software may be distributed either under the terms of the
   5  * BSD-style licence that accompanies tcpdump or under the GNU GPL
   6  * version 2 or later.
   7  *
   8  * print-bxxp.c
   9  *
  10  */
  11
  12 #ifndef lint
  13 static const char rcsid[] =
  14   "@(#) $Header: /tcpdump/master/tcpdump/Attic/print-bxxp.c,v 1.3 2000-10-05 04:10:01 itojun Exp $";
  15 #endif
  16
  17 #ifdef HAVE_CONFIG_H
  18 #include "config.h"
  19 #endif
  20
  21 #include <sys/param.h>
  22 #include <sys/time.h>
  23
  24 #ifdef HAVE_MEMORY_H
  25 #include <memory.h>
  26 #endif
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31
  32 #include "interface.h"
  33 #include "extract.h"
  34
  35 /* Check for a string but not go beyond length
  36  * Return TRUE on match, FALSE otherwise
  37  *
  38  * Looks at the first few chars up to tl1 ...
  39  */
  40
  41 int l_strnstart(const u_char *, u_int, const u_char *, u_int);
  42
  43 int
  44 l_strnstart(register const u_char *tstr1, register u_int tl1,
  45           register const u_char *str2, register u_int l2)
  46 {
  47
  48   if (tl1 > l2)
  49     return 0;
  50
  51   return (strncmp(tstr1, str2, tl1) == 0 ? 1 : 0);
  52
  53 }
  54
  55 void
  56 bxxp_print(register const u_char *bp, register u_int length)
  57 {
  58
  59   if (l_strnstart("REQ ", 4, bp, length)) { /* A REQuest */
  60
  61     printf(" BXXP REQ");
  62
  63   }
  64   else if (l_strnstart("RSP ", 4, bp, length)) {
  65
  66     printf(" BXXP RSP");
  67
  68   }
  69   else if (l_strnstart("SEQ ", 4, bp, length)) {
  70
  71     printf(" BXXP SEQ");
  72
  73   }
  74   else if (l_strnstart("END", 4, bp, length)) {
  75
  76     printf(" BXXP END");
  77
  78   }
  79   else
  80     printf(" BXXP (payload or undecoded)");
  81
  82 }