xmlsecurity/source/xmlsec/biginteger.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <xmlsecurity/biginteger.hxx>
  22
  23 #include "xmlsecurity/xmlsec-wrapper.h"
  24 #include <com/sun/star/uno/Sequence.hxx>
  25
  26 using namespace ::com::sun::star::uno ;
  27
  28 Sequence< sal_Int8 > numericStringToBigInteger ( const OUString& numeral )
  29 {
  30     if( numeral.getStr() != NULL )
  31     {
  32         xmlChar* chNumeral ;
  33         const xmlSecByte* bnInteger ;
  34         xmlSecSize length ;
  35         xmlSecBn bn ;
  36
  37         OString onumeral = OUStringToOString( numeral , RTL_TEXTENCODING_ASCII_US ) ;
  38
  39         chNumeral = xmlStrndup( reinterpret_cast<const xmlChar*>(onumeral.getStr()), ( int )onumeral.getLength() ) ;
  40
  41         if( xmlSecBnInitialize( &bn, 0 ) < 0 ) {
  42             xmlFree( chNumeral ) ;
  43             return Sequence< sal_Int8 >();
  44         }
  45
  46         if( xmlSecBnFromDecString( &bn, chNumeral ) < 0 ) {
  47             xmlFree( chNumeral ) ;
  48             xmlSecBnFinalize( &bn ) ;
  49             return Sequence< sal_Int8 >();
  50         }
  51
  52         xmlFree( chNumeral ) ;
  53
  54         length = xmlSecBnGetSize( &bn ) ;
  55         if( length <= 0 ) {
  56             xmlSecBnFinalize( &bn ) ;
  57             return Sequence< sal_Int8 >();
  58         }
  59
  60         bnInteger = xmlSecBnGetData( &bn ) ;
  61         if( bnInteger == NULL ) {
  62             xmlSecBnFinalize( &bn ) ;
  63             return Sequence< sal_Int8 >();
  64         }
  65
  66         Sequence< sal_Int8 > integer( length ) ;
  67         for( unsigned int i = 0 ; i < length ; i ++ )
  68         {
  69             integer[i] = *( bnInteger + i ) ;
  70         }
  71
  72         xmlSecBnFinalize( &bn ) ;
  73         return integer ;
  74     }
  75
  76     return Sequence< sal_Int8 >();
  77 }
  78
  79 OUString bigIntegerToNumericString ( const Sequence< sal_Int8 >& integer )
  80 {
  81     OUString aRet ;
  82
  83     if( integer.getLength() ) {
  84         xmlSecBn bn ;
  85         xmlChar* chNumeral ;
  86
  87         if( xmlSecBnInitialize( &bn, 0 ) < 0 )
  88             return aRet ;
  89
  90         if( xmlSecBnSetData( &bn, reinterpret_cast<const unsigned char*>(integer.getConstArray()), integer.getLength() ) < 0 ) {
  91             xmlSecBnFinalize( &bn ) ;
  92             return aRet ;
  93         }
  94
  95         chNumeral = xmlSecBnToDecString( &bn ) ;
  96         if( chNumeral == NULL ) {
  97             xmlSecBnFinalize( &bn ) ;
  98             return aRet ;
  99         }
 100
 101         aRet = OUString::createFromAscii( reinterpret_cast<char*>(chNumeral) ) ;
 102
 103         xmlSecBnFinalize( &bn ) ;
 104         xmlFree( chNumeral ) ;
 105     }
 106
 107     return aRet ;
 108 }
 109
 110 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */