Files
harbour-core/harbour/contrib/tip/encmthd.c
Przemyslaw Czerpak 32f17091b8 2007-10-26 03:46 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
* harbour/include/hbstack.h
  * harbour/include/hboo.ch
  * harbour/ChangeLog
  * harbour/utils/hbmake/hbmlang.c
  * harbour/utils/hbpp/hbppcore.c
  * harbour/utils/hbpp/hbpp.c
  * harbour/source/pp/ppcore.c
  * harbour/source/rtl/cdpapi.c
  * harbour/source/rtl/gtcrs/gtcrs.c
  * harbour/source/rtl/gtalleg/fixedth.sfc
  * harbour/source/rtl/fstemp.c
  * harbour/source/rtl/idle.c
  * harbour/source/rtl/gtstd/gtstd.c
  * harbour/source/rtl/gttrm/gttrm.c
  * harbour/source/rtl/gtpca/gtpca.c
  * harbour/source/rtl/hbffind.c
  * harbour/source/rtl/hbregex.c
  * harbour/source/vm/hvm.c
  * harbour/contrib/xhb/hboutdbg.c
  * harbour/contrib/xhb/hbxml.c
  * harbour/contrib/xhb/hbxml.h
  * harbour/contrib/xhb/cstructc.c
  * harbour/contrib/xhb/hbsyslog.c
  * harbour/contrib/libmisc/hb_f.c
  * harbour/contrib/libnf/fttext.c
  * harbour/contrib/libnf/mouse.c
  * harbour/contrib/tip/encmthd.c
  * harbour/contrib/rdd_ads/ads1.c
  * harbour/contrib/rdd_ads/ace.h
  * harbour/contrib/btree/hb_btree.c
  * harbour/contrib/samples/status.c
  * harbour/contrib/samples/gauge.c
  * harbour/contrib/odbc/odbc.c
  * harbour/contrib/bmdbfcdx/hbrddbmcdx.h
  * harbour/contrib/bmdbfcdx/bmdbfcdx1.c
    * cleanup errors in strict ANSI C compilation
2007-10-26 01:47:21 +00:00

569 lines
14 KiB
C

/*
* $Id$
*/
/*
* xHarbour Project source code:
* TIP Class oriented Internet protocol library
*
* Copyright 2003 Giancarlo Niccolai <gian@niccolai.ws>
*
* www - http://www.harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#include "hbapi.h"
#include "hbapiitm.h"
#include "hbapicls.h"
#include "hbapierr.h"
#include "hbstack.h"
HB_FUNC( TIPENCODERBASE64_ENCODE )
{
char *cData = hb_parc(1);
char *cRet;
int nLen = hb_parclen(1);
int nPos = 0, nPosRet = 0;
int nPosBlock = 0, nLineCount = 0;
ULONG nFinalLen;
unsigned char cElem, cElem1;
BOOL bExcept;
if ( ! cData )
{
hb_errRT_BASE( EG_ARG, 3012, NULL,
"TIPENCODERBASE64_ENCODE", 1, hb_paramError(1) );
return;
}
if ( ! nLen )
{
hb_retc( "" );
return;
}
/* read the status of bHttpExcept */
if ( hb_pcount() > 1 )
{
/* this makes this function static!!!! */
bExcept = hb_parl( 2 );
}
else
{
hb_objSendMsg( hb_stackSelfItem(), "BHTTPEXCEPT", 0 );
bExcept = hb_parl( -1 );
}
/* we know exactly the renturned length. */
nFinalLen = (ULONG) ((nLen / 3 + 2) * 4);
/* add line termination padding, CRLF each 76 output bytes */
nFinalLen += (nFinalLen / 72 +1) * 2;
cRet = (char *) hb_xgrab( nFinalLen );
while ( nPos < nLen )
{
cElem = (unsigned char) cData[ nPos ];
/* NOT using trailing 0 here as some buggy 3dparty func
will create strings without trailing 0. */
nPosBlock++;
switch( nPosBlock )
{
case 1:
cElem = cElem >> 2;
break;
case 2:
cElem1 = nPos < nLen -1 ? (unsigned char) cData[ nPos + 1] : 0;
cElem = ((cElem & 0x3) << 4) | (cElem1 >> 4);
nPos++;
break;
case 3:
cElem1 = nPos < nLen -1 ? (unsigned char) cData[ nPos + 1] : 0;
cElem = ((cElem & 0xF) << 2) | (cElem1 >> 6);
nPos++;
break;
case 4:
cElem = cElem & 0x3f;
nPos++;
nPosBlock = 0;
break;
}
if ( cElem < 26 )
{
cRet[nPosRet++] = cElem + 'A';
}
else if ( cElem < 52 )
{
cRet[nPosRet++] = ( cElem - 26 ) + 'a';
}
else if ( cElem < 62 )
{
cRet[nPosRet++] = ( cElem - 52 ) + '0';
}
else if ( cElem == 62 )
{
cRet[nPosRet++] = '+';
}
else
{
cRet[nPosRet++] = '/';
}
if ( ! bExcept )
{
nLineCount ++ ;
/* RFC says to add a CRLF each 76 chars, but is pretty unclear about
the fact of this 76 chars counting CRLF or not. Common
practice is to limit line size to 72 chars */
if ( nLineCount == 72 )
{
cRet[nPosRet++] = '\r';
cRet[nPosRet++] = '\n';
nLineCount = 0;
}
}
}
switch( nPos % 3 )
{
case 1:
cRet[ nPosRet++ ] = '=';
/* fallthrough */
case 2:
cRet[ nPosRet++ ] = '=';
/* fallthrough */
}
/* RFC is not explicit, but CRLF SHOULD be added at bottom
during encoding phase */
if ( ! bExcept )
{
cRet[nPosRet++] = '\r';
cRet[nPosRet++] = '\n';
}
/* this function also adds a zero */
hb_retclen_buffer( cRet, nPosRet );
}
HB_FUNC( TIPENCODERBASE64_DECODE )
{
char *cData = hb_parc(1);
unsigned char *cRet;
int nLen = hb_parclen(1);
int nPos = 0, nPosRet = 0, nPosBlock = 0;
unsigned char cElem;
if ( ! cData )
{
hb_errRT_BASE( EG_ARG, 3012, NULL,
"TIPENCODERBASE64_DECODE", 1, hb_paramError(1) );
return;
}
if ( ! nLen )
{
hb_retc( "" );
return;
}
/* we know exactly the renturned length. */
cRet = (unsigned char *) hb_xgrab( (nLen / 4 + 1) * 3 );
while ( nPos < nLen )
{
cElem = cData[ nPos ];
if ( cElem >= 'A' && cElem <= 'Z' )
{
cElem -= 'A';
}
else if ( cElem >= 'a' && cElem <= 'z' )
{
cElem = cElem - 'a' + 26;
}
else if ( cElem >= '0' && cElem <= '9' )
{
cElem = cElem - '0' + 52;
}
else if ( cElem == '+' )
{
cElem = 62;
}
else if ( cElem == '/' )
{
cElem = 63;
}
/* end of stream? */
else if ( cElem == '=' )
{
break;
}
/* RFC 2045 specifies characters not in base64 must be ignored */
else
{
nPos++;
continue;
}
switch( nPosBlock )
{
case 0:
cRet[nPosRet] = cElem << 2;
nPosBlock++;
break;
case 1:
/* higer bits are zeros */
cRet[nPosRet] |= cElem >> 4;
nPosRet++;
cRet[nPosRet] = cElem << 4;
nPosBlock++;
break;
case 2:
/* higer bits are zeros */
cRet[nPosRet] |= cElem >> 2;
nPosRet++;
cRet[nPosRet] = cElem << 6;
nPosBlock++;
break;
case 3:
cRet[nPosRet] |= cElem;
nPosRet++;
nPosBlock = 0;
break;
}
nPos++;
}
/* this function also adds a zero */
/* hopefully reduce the size of cRet */
cRet = (unsigned char *) hb_xrealloc( cRet, nPosRet + 1 );
hb_retclen_buffer( (char *)cRet, nPosRet );
}
HB_FUNC( TIPENCODERQP_ENCODE )
{
char *cData = hb_parc(1);
int nLen = hb_parclen(1);
char *cRet;
unsigned char cElem;
int nVal, iLineLen = 0;
int nPosRet = 0, nPos = 0;
if ( ! cData )
{
hb_errRT_BASE( EG_ARG, 3012, NULL,
"TIPENCODEQP_ENCODE", 1, hb_paramError(1) );
return;
}
if ( ! nLen )
{
hb_retc( "" );
return;
}
/* Preallocating maximum possible length */
cRet = (char *) hb_xgrab( nLen * 3 + ( nLen/72 ) *3 + 3 );
/* last +3 is trailing \r\n\0 */
while ( nPos < nLen )
{
cElem = (unsigned char) cData[ nPos ];
/* We chose not to encode spaces and tab here.
cElem is signed and ranges from -126 to +127.
negative values are automatically encoded */
if ( (cElem >=33 && cElem <= 60) || cElem >= 62 ||
cElem == 9 || cElem == 32 )
{
cRet[nPosRet++] = (char) cElem;
iLineLen++;
}
else
{
cRet[nPosRet++] = '=';
nVal = cElem >> 4;
cRet[nPosRet++] = (char) (nVal < 10 ? '0' + nVal : 'A' + nVal - 10);
nVal = cElem & 0x0f;
cRet[nPosRet++] = (char) (nVal < 10 ? '0' + nVal : 'A' + nVal - 10);
iLineLen+=3;
}
nPos++;
if ( iLineLen >= 72 )
{
cRet[nPosRet++] = '=';
cRet[nPosRet++] = '\r';
cRet[nPosRet++] = '\n';
iLineLen = 0;
}
}
/* Securing last line trailing space, if needed */
cElem = (unsigned char) cRet[nPosRet - 1];
if ( cElem == 9 || cElem == 32 )
{
cRet[nPosRet++] = '=';
cRet[nPosRet++] = '\r';
cRet[nPosRet++] = '\n';
}
/* Adding canonical new line for RFC2045 blocks */
/* this function also adds a zero */
cRet = (char *) hb_xrealloc( cRet, nPosRet + 1 );
hb_retclen_buffer( cRet, nPosRet );
}
HB_FUNC( TIPENCODERQP_DECODE )
{
char *cData = hb_parc(1);
int nLen = hb_parclen(1);
char *cRet;
int nPos = 0, nPosRet = 0, nVal;
unsigned char cElem, cCipher;
if ( ! cData )
{
hb_errRT_BASE( EG_ARG, 3012, NULL,
"TIPENCODERQP_DECODE", 1, hb_paramError(1) );
return;
}
if ( ! nLen )
{
hb_retc( "" );
return;
}
/* allocate maximum possible lenght. */
cRet = (char *) hb_xgrab( nLen + 1 );
while ( nPos < nLen )
{
cElem = (unsigned char) cData[ nPos ];
if ( cElem == '=' )
{
if ( nPos < nLen - 2 )
{
cCipher = (unsigned char) cData[ ++nPos ];
/* soft line break */
if ( cCipher == '\r' )
{
nPos += 2;
continue;
}
else {
nVal = cCipher >= 'A' && cCipher <= 'F' ? cCipher - 'A' + 10 :
cCipher - '0';
nVal *= 16;
cCipher = (unsigned char) cData[ ++nPos ];
nVal += cCipher >= 'A' && cCipher <= 'F' ? cCipher - 'A' + 10 :
cCipher - '0';
cRet[ nPosRet++ ] = (char) nVal;
}
}
/* else the encoding is malformed */
else
{
if (nPosRet > 0 )
{
break;
}
}
}
else
{
cRet[ nPosRet++ ] = (char) cElem;
}
nPos ++;
}
/* this function also adds a zero */
/* hopefully reduce the size of cRet */
cRet = (char *) hb_xrealloc( cRet, nPosRet + 1 );
hb_retclen_buffer( cRet, nPosRet );
}
HB_FUNC( TIPENCODERURL_ENCODE )
{
char *cData = hb_parc(1);
int nLen = hb_parclen(1);
BOOL bComplete = hb_parl(2);
char *cRet;
int nPos = 0, nPosRet = 0, nVal;
char cElem;
if ( hb_pcount() < 2 )
{
bComplete = TRUE;
}
if ( ! cData )
{
hb_errRT_BASE( EG_ARG, 3012, NULL,
"TIPENCODERBASE64_ENCODE", 1, hb_paramError(1) );
return;
}
if ( ! nLen )
{
hb_retc( "" );
return;
}
/* Giving maximum final length possible */
cRet = (char *) hb_xgrab( nLen * 3 +1);
while ( nPos < nLen )
{
cElem = cData[ nPos ];
if ( cElem == ' ' )
{
cRet[ nPosRet ] = '+';
}
else if (
(cElem >= 'A' && cElem <= 'Z') ||
(cElem >= 'a' && cElem <= 'z') ||
(cElem >= '0' && cElem <= '9') ||
cElem == '.' || cElem == ',' || cElem == '&' ||
cElem == '/' || cElem == ';' || cElem =='_' )
{
cRet[ nPosRet ] = cElem;
}
else if ( ! bComplete && ( cElem == ':' || cElem == '?' || cElem == '=' ) )
{
cRet[ nPosRet ] = cElem;
}
else /* encode! */
{
cRet[ nPosRet++] = '%';
nVal = ((unsigned char) cElem) >> 4;
cRet[ nPosRet++] = nVal < 10 ? '0' + nVal : 'A' + nVal - 10;
nVal = ((unsigned char) cElem) & 0x0f;
cRet[ nPosRet ] = nVal < 10 ? '0' + nVal : 'A' + nVal - 10;
}
nPosRet++;
nPos++;
}
hb_retclen_buffer( cRet, nPosRet );
}
HB_FUNC( TIPENCODERURL_DECODE )
{
char *cData = hb_parc(1);
int nLen = hb_parclen(1);
char *cRet;
int nPos = 0, nPosRet = 0;
char cElem;
if ( ! cData )
{
hb_errRT_BASE( EG_ARG, 3012, NULL,
"TIPENCODERBASE64_DECODE", 1, hb_paramError(1) );
return;
}
if ( ! nLen )
{
hb_retc( "" );
return;
}
/* maximum possible lenght */
cRet = (char *) hb_xgrab( nLen );
while ( nPos < nLen )
{
cElem = cData[ nPos ];
if ( cElem == '+' )
{
cRet[ nPosRet ] = ' ';
}
else if ( cElem == '%' )
{
if ( nPos < nLen - 2 )
{
cElem = cData[ ++nPos ];
cRet[ nPosRet ] = cElem < 'A' ? cElem - '0' : cElem - 'A' + 10;
cRet[ nPosRet ] *= 16;
cElem = cData[ ++nPos ];
cRet[ nPosRet ] |= cElem < 'A' ? cElem - '0' : cElem - 'A' + 10;
}
else
{
if (nPosRet > 0 )
{
break;
}
}
}
else
{
cRet[ nPosRet ] = cElem;
}
nPos++;
nPosRet++;
}
/* this function also adds a zero */
/* hopefully reduce the size of cRet */
cRet = (char *) hb_xrealloc( cRet, nPosRet + 1 );
hb_retclen_buffer( cRet, nPosRet );
}