066d7497f8
* source/rtl/hbmd5.c
+ HB_MD5(), HB_MD5FILE(): New logical parameter added, which
controls whether to return binary data or hexadecimal string.
The default is .T. which will return hexa string, to stay
compatible. Later we should switch the default to .F..
* mpkg_gnu.bat
* Updated requirement section.
424 lines
12 KiB
C
424 lines
12 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* Harbour MD5 Support
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*
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* Copyright 2004 Dmitry V. Korzhov <dk@april26.spb.ru>
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*
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* Copyright 2007 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
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* updated for current Harbour code, other then x86@32 machines,
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* files and buffers longer then 2^32 and some fixes
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*
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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/*
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MD5 digest (based on RFC 1321 only). [x]Harbour implementation
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PRG functions:
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HB_MD5( <cString> ) -> <cMD5>
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Calculates RFC 1321 MD5 digest (128-bit checksum)
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Parameters:
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<cString> - string variable to calculate MD5
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Returns:
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ASCII hex MD5 digest as 32-byte string
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empty string on error
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HB_MD5FILE( <cFileName> ) -> <cMD5>
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Calculates RFC 1321 MD5 digest (128-bit checksum) of a file contents
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(file size is limited by OS limits only)
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Parameters:
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<cFileName> - file name
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Returns:
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ASCII hex MD5 digest as 32-byte string
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empty string on error
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C functions:
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void hb_md5( const char * data, ULONG datalen, char * digest )
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Parameters:
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data - input byte stream
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datalen - input stream length
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digest - raw (unformatted) MD5 digest buffer
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(at least 16 bytes long)
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void hb_md5file( HB_FHANDLE hFile, char * digest )
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Parameters:
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hFile - file handle
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digest - raw (unformatted) MD5 digest buffer
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(at least 16 bytes long)
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*/
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#include "hbapi.h"
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#include "hbapifs.h"
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#include "hbchksum.h"
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/* MD5 buffer */
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typedef struct
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{
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UINT32 accum[ 4 ];
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BYTE buf[ 64 ];
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} MD5_BUF;
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/*
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Pseudofunctions;
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A[x] - accumulators[4]
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T[x] - Value table[64]
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X[x] - buffer[16]
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*/
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#define ROTL(x,n) ((x << n) | (x >> (32 - n)))
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#define PF1(a,b,c,d,k,s,i) \
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A[a] = A[a] + ((A[b] & A[c]) | ((~A[b]) & A[d])) + X[k] + T[i]; \
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A[a] = ROTL(A[a], s) + A[b]
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#define PF2(a,b,c,d,k,s,i) \
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A[a] = A[a] + ((A[b] & A[d]) | (A[c] & (~A[d]))) + X[k] + T[i]; \
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A[a] = ROTL(A[a], s) + A[b]
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#define PF3(a,b,c,d,k,s,i) \
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A[a] = A[a] + (A[b] ^ A[c] ^ A[d]) + X[k] + T[i]; \
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A[a] = ROTL(A[a], s) + A[b]
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#define PF4(a,b,c,d,k,s,i) \
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A[a] = A[a] + (A[c] ^(A[b] | (~A[d]))) + X[k] + T[i]; \
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A[a] = ROTL(A[a], s) + A[b]
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/* Defines for file ops */
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#define MAX_FBUF 0x20000 /* file read buffer size, MUST be 64*n */
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/* Static data */
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static const UINT32 T[ 64 ] = {
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0xD76AA478, 0xE8C7B756, 0x242070DB, 0xC1BDCEEE,
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0xF57C0FAF, 0x4787C62A, 0xA8304613, 0xFD469501,
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0x698098D8, 0x8B44F7AF, 0xFFFF5BB1, 0x895CD7BE,
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0x6B901122, 0xFD987193, 0xA679438E, 0x49B40821,
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0xF61E2562, 0xC040B340, 0x265E5A51, 0xE9B6C7AA,
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0xD62F105D, 0x02441453, 0xD8A1E681, 0xE7D3FBC8,
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0x21E1CDE6, 0xC33707D6, 0xF4D50D87, 0x455A14ED,
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0xA9E3E905, 0xFCEFA3F8, 0x676F02D9, 0x8D2A4C8A,
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0xFFFA3942, 0x8771F681, 0x6D9D6122, 0xFDE5380C,
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0xA4BEEA44, 0x4BDECFA9, 0xF6BB4B60, 0xBEBFBC70,
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0x289b7EC6, 0xEAA127FA, 0xD4EF3085, 0x04881D05,
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0xD9D4D039, 0xE6DB99E5, 0x1FA27CF8, 0xC4AC5665,
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0xF4292244, 0x432AFF97, 0xAB9423A7, 0xFC93A039,
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0x655b59C3, 0x8F0CCC92, 0xFFEFF47D, 0x85845DD1,
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0x6Fa87E4F, 0xFE2CE6e0, 0xA3014314, 0x4E0811A1,
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0xF7537E82, 0xBD3AF235, 0x2AD7D2BB, 0xEB86D391
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};
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static const BYTE pad[ 64 ] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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static void hb_md5go( MD5_BUF * md5 )
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{
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UINT32 X[ 16 ], A[ 4 ];
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BYTE * ptr;
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int i;
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/* copy accumulators first */
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memcpy( A, md5->accum, sizeof( A ) );
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/* fill buffer */
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for( i = 0, ptr = md5->buf; i < 16; i++, ptr += 4 )
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X[ i ] = HB_GET_LE_UINT32( ptr );
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/* process buffer */
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PF1( 0, 1, 2, 3, 0, 7, 0 );
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PF1( 3, 0, 1, 2, 1, 12, 1 );
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PF1( 2, 3, 0, 1, 2, 17, 2 );
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PF1( 1, 2, 3, 0, 3, 22, 3 );
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PF1( 0, 1, 2, 3, 4, 7, 4 );
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PF1( 3, 0, 1, 2, 5, 12, 5 );
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PF1( 2, 3, 0, 1, 6, 17, 6 );
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PF1( 1, 2, 3, 0, 7, 22, 7 );
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PF1( 0, 1, 2, 3, 8, 7, 8 );
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PF1( 3, 0, 1, 2, 9, 12, 9 );
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PF1( 2, 3, 0, 1, 10, 17, 10 );
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PF1( 1, 2, 3, 0, 11, 22, 11 );
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PF1( 0, 1, 2, 3, 12, 7, 12 );
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PF1( 3, 0, 1, 2, 13, 12, 13 );
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PF1( 2, 3, 0, 1, 14, 17, 14 );
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PF1( 1, 2, 3, 0, 15, 22, 15 );
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PF2( 0, 1, 2, 3, 1, 5, 16 );
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PF2( 3, 0, 1, 2, 6, 9, 17 );
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PF2( 2, 3, 0, 1, 11, 14, 18 );
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PF2( 1, 2, 3, 0, 0, 20, 19 );
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PF2( 0, 1, 2, 3, 5, 5, 20 );
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PF2( 3, 0, 1, 2, 10, 9, 21 );
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PF2( 2, 3, 0, 1, 15, 14, 22 );
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PF2( 1, 2, 3, 0, 4, 20, 23 );
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PF2( 0, 1, 2, 3, 9, 5, 24 );
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PF2( 3, 0, 1, 2, 14, 9, 25 );
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PF2( 2, 3, 0, 1, 3, 14, 26 );
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PF2( 1, 2, 3, 0, 8, 20, 27 );
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PF2( 0, 1, 2, 3, 13, 5, 28 );
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PF2( 3, 0, 1, 2, 2, 9, 29 );
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PF2( 2, 3, 0, 1, 7, 14, 30 );
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PF2( 1, 2, 3, 0, 12, 20, 31 );
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PF3( 0, 1, 2, 3, 5, 4, 32 );
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PF3( 3, 0, 1, 2, 8, 11, 33 );
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PF3( 2, 3, 0, 1, 11, 16, 34 );
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PF3( 1, 2, 3, 0, 14, 23, 35 );
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PF3( 0, 1, 2, 3, 1, 4, 36 );
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PF3( 3, 0, 1, 2, 4, 11, 37 );
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PF3( 2, 3, 0, 1, 7, 16, 38 );
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PF3( 1, 2, 3, 0, 10, 23, 39 );
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PF3( 0, 1, 2, 3, 13, 4, 40 );
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PF3( 3, 0, 1, 2, 0, 11, 41 );
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PF3( 2, 3, 0, 1, 3, 16, 42 );
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PF3( 1, 2, 3, 0, 6, 23, 43 );
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PF3( 0, 1, 2, 3, 9, 4, 44 );
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PF3( 3, 0, 1, 2, 12, 11, 45 );
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PF3( 2, 3, 0, 1, 15, 16, 46 );
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PF3( 1, 2, 3, 0, 2, 23, 47 );
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PF4( 0, 1, 2, 3, 0, 6, 48 );
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PF4( 3, 0, 1, 2, 7, 10, 49 );
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PF4( 2, 3, 0, 1, 14, 15, 50 );
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PF4( 1, 2, 3, 0, 5, 21, 51 );
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PF4( 0, 1, 2, 3, 12, 6, 52 );
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PF4( 3, 0, 1, 2, 3, 10, 53 );
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PF4( 2, 3, 0, 1, 10, 15, 54 );
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PF4( 1, 2, 3, 0, 1, 21, 55 );
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PF4( 0, 1, 2, 3, 8, 6, 56 );
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PF4( 3, 0, 1, 2, 15, 10, 57 );
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PF4( 2, 3, 0, 1, 6, 15, 58 );
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PF4( 1, 2, 3, 0, 13, 21, 59 );
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PF4( 0, 1, 2, 3, 4, 6, 60 );
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PF4( 3, 0, 1, 2, 11, 10, 61 );
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PF4( 2, 3, 0, 1, 2, 15, 62 );
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PF4( 1, 2, 3, 0, 9, 21, 63 );
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/* Update accumulators */
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md5->accum[ 0 ] += A[ 0 ];
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md5->accum[ 1 ] += A[ 1 ];
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md5->accum[ 2 ] += A[ 2 ];
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md5->accum[ 3 ] += A[ 3 ];
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}
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static void hb_md5accinit( UINT32 accum[] )
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{
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/* fill initial accumulator state */
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accum[ 0 ] = 0x67452301;
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accum[ 1 ] = 0xEFCDAB89;
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accum[ 2 ] = 0x98BADCFE;
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accum[ 3 ] = 0x10325476;
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}
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static void hb_md5val( UINT32 accum[], char * md5val )
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{
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int i, n;
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for( i = 0; i < 4; i++ )
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{
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for( n = 0; n < 4; n++ )
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*md5val++ = ( char ) ( ( accum[ i ] >> ( n << 3 ) ) & 0xFF );
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}
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}
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static void hb_md5digest( const char * md5val, char * digest )
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{
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int i, b;
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for( i = 0; i < 16; i++ )
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{
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b = ( ( UCHAR ) md5val[ i ] >> 4 ) & 0x0F;
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*digest++ = ( char ) ( b + ( b > 9 ? 'a' - 10 : '0' ) );
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b = ( UCHAR ) md5val[ i ] & 0x0F;
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*digest++ = ( char ) ( b + ( b > 9 ? 'a' - 10 : '0' ) );
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}
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}
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void hb_md5( const char * ucData, ULONG ulLen, char * ucDigest )
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{
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UCHAR buf[ 128 ];
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MD5_BUF md5;
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int i, n;
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/* perform startup procedures */
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hb_md5accinit( md5.accum );
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/* count full 512bit blocks in data*/
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n = ulLen >> 6;
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/* process full blocks */
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for( i = 0; i < n; i++, ucData += 64 )
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{
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memcpy( md5.buf, ucData, 64 );
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hb_md5go( &md5 );
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}
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/* prepare additional block(s) */
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n = ulLen & 63;
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if( n )
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memcpy( buf, ucData, n );
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memcpy( buf + n, pad, 64 );
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/* count bits length */
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i = 56;
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if( n >= 56 )
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{
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i += 64;
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memcpy( md5.buf, buf, 64 );
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hb_md5go( &md5 );
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}
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buf[ i++ ] = ( UCHAR ) ( ( ulLen << 3 ) & 0xF8 );
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ulLen >>= 5;
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for( n = 7; n; --n )
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{
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buf[ i++ ] = ( UCHAR ) ( ulLen & 0xFF );
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ulLen >>= 8;
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}
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memcpy( md5.buf, buf + i - 64, 64 );
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hb_md5go( &md5 );
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/* write digest */
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hb_md5val( md5.accum, ucDigest );
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}
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void hb_md5file( HB_FHANDLE hFile, char * ucDigest )
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{
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MD5_BUF md5;
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ULONG n;
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int i;
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HB_FOFFSET flen = 0;
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UCHAR buf[ 128 ];
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BYTE * readbuf = ( BYTE * ) hb_xgrab( MAX_FBUF );
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hb_md5accinit( md5.accum );
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n = hb_fsReadLarge( hFile, readbuf, MAX_FBUF );
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flen += n;
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while( n == MAX_FBUF )
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{
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for( i = 0; i < ( MAX_FBUF >> 6 ); i++ )
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{
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memcpy( md5.buf, readbuf + ( i << 6 ), 64 );
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hb_md5go( &md5 );
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}
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n = hb_fsReadLarge( hFile, readbuf, MAX_FBUF );
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flen += n;
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}
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hb_fsClose( hFile );
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i = 0;
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while( n > 64 )
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{
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memcpy( md5.buf, readbuf + i, 64 );
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hb_md5go( &md5 );
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i += 64;
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n -= 64;
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}
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if( n )
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memcpy( buf, readbuf + i, n );
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memcpy( buf + n, pad, 64 );
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i = 56;
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if( n >= 56 )
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{
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i += 64;
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memcpy( md5.buf, buf, 64 );
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hb_md5go( &md5 );
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}
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buf[ i++ ] = ( UCHAR ) ( ( flen << 3 ) & 0xF8 );
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flen >>= 5;
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for( n = 7; n; --n )
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{
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buf[ i++ ] = ( UCHAR ) ( flen & 0xFF );
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flen >>= 8;
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}
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memcpy( md5.buf, buf + i - 64, 64 );
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hb_md5go( &md5 );
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hb_md5val( md5.accum, ucDigest );
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hb_xfree( readbuf );
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}
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HB_FUNC( HB_MD5 )
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{
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const char * pszStr = hb_parc( 1 );
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if( pszStr )
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{
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ULONG ulLen = hb_parclen( 1 );
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char dststr[ 16 ];
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hb_md5( pszStr, ulLen, dststr );
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if( ! ISLOG( 2 ) || hb_parl( 2 ) )
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{
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char digest[ 32 + 1 ];
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hb_md5digest( dststr, digest );
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hb_retclen( digest, HB_SIZEOFARRAY( digest ) - 1 );
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}
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else
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hb_retclen( dststr, HB_SIZEOFARRAY( dststr ) );
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}
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else
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hb_retc_null(); /* return empty string on wrong call */
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}
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HB_FUNC( HB_MD5FILE )
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{
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const char * pszFile = hb_parc( 1 );
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if( pszFile )
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{
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HB_FHANDLE hFile = hb_fsOpen( pszFile, FO_READ );
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if( hFile != FS_ERROR )
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{
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char dststr[ 16 ];
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hb_md5file( hFile, dststr );
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if( ! ISLOG( 2 ) || hb_parl( 2 ) )
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{
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char digest[ 32 + 1 ];
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hb_md5digest( dststr, digest );
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hb_retclen( digest, HB_SIZEOFARRAY( digest ) - 1 );
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}
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else
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hb_retclen( dststr, HB_SIZEOFARRAY( dststr ) );
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return;
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}
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}
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hb_retc_null(); /* return empty string on wrong call */
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}
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