src/openvpn/tap-win32/hexdump.c

   1 /*
   2  *  TAP-Win32 -- A kernel driver to provide virtual tap device functionality
   3  *               on Windows.  Originally derived from the CIPE-Win32
   4  *               project by Damion K. Wilson, with extensive modifications by
   5  *               James Yonan.
   6  *
   7  *  All source code which derives from the CIPE-Win32 project is
   8  *  Copyright (C) Damion K. Wilson, 2003, and is released under the
   9  *  GPL version 2 (see below).
  10  *
  11  *  All other source code is Copyright (C) 2002-2005 OpenVPN Solutions LLC,
  12  *  and is released under the GPL version 2 (see below).
  13  *
  14  *  This program is free software; you can redistribute it and/or modify
  15  *  it under the terms of the GNU General Public License version 2
  16  *  as published by the Free Software Foundation.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program (see the file COPYING included with this
  25  *  distribution); if not, write to the Free Software Foundation, Inc.,
  26  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  27  */
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 #include "hexdump.h"
  34
  35 #ifndef NDIS_MINIPORT_DRIVER
  36
  37 VOID (*DbgMessage)(char *p_Format, ...) = DisplayDebugString;
  38
  39 VOID DisplayDebugString (char *p_Format, ...)
  40    {
  41     static char l_Buffer [4096];
  42
  43     va_list l_ArgumentList;
  44     va_start (l_ArgumentList, p_Format);
  45     vsprintf (l_Buffer, p_Format, l_ArgumentList);
  46     va_end (l_ArgumentList);
  47
  48     OutputDebugStringA (l_Buffer);
  49    }
  50
  51 #endif
  52
  53 VOID HexDump (unsigned char *p_Buffer, unsigned long p_Size)
  54    {
  55     unsigned long l_Index, l_Idx;
  56     unsigned char l_Row [17];
  57
  58     for (l_Index = l_Row [16] = 0; l_Index < p_Size || l_Index % 16; ++l_Index)
  59        {
  60         if (l_Index % 16 == 0)
  61           DEBUGP (("%05x   ", l_Index));
  62         DEBUGP (("%02x ", l_Row [l_Index % 16] = (l_Index < p_Size ? p_Buffer [l_Index] : 0)));
  63         l_Row [l_Index % 16] = IfPrint (l_Row [l_Index % 16]);
  64         if ((l_Index + 1) % 16 == 0)
  65           DEBUGP (("   %s\n", l_Row));
  66        }
  67
  68     DEBUGP (("\n"));
  69    }
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif