xmlsecurity/source/xmlsec/biginteger.cxx

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  27
  28 // MARKER(update_precomp.py): autogen include statement, do not remove
  29 #include "precompiled_xmlsecurity.hxx"
  30
  31 #include <xmlsecurity/biginteger.hxx>
  32
  33 #include <sal/types.h>
  34 //For reasons that escape me, this is what xmlsec does when size_t is not 4
  35 #if SAL_TYPES_SIZEOFPOINTER != 4
  36 #    define XMLSEC_NO_SIZE_T
  37 #endif
  38 #include <xmlsec/xmlsec.h>
  39 #include <xmlsec/bn.h>
  40 #include <com/sun/star/uno/Sequence.hxx>
  41
  42 using namespace ::com::sun::star::uno ;
  43 using ::rtl::OUString ;
  44
  45 Sequence< sal_Int8 > numericStringToBigInteger ( OUString numeral )
  46 {
  47     if( numeral.getStr() != NULL )
  48     {
  49         xmlChar* chNumeral ;
  50         const xmlSecByte* bnInteger ;
  51         xmlSecSize length ;
  52         xmlSecBn bn ;
  53
  54         rtl::OString onumeral = rtl::OUStringToOString( numeral , RTL_TEXTENCODING_ASCII_US ) ;
  55
  56         chNumeral = xmlStrndup( ( const xmlChar* )onumeral.getStr(), ( int )onumeral.getLength() ) ;
  57
  58         if( xmlSecBnInitialize( &bn, 0 ) < 0 ) {
  59             xmlFree( chNumeral ) ;
  60             return Sequence< sal_Int8 >();
  61         }
  62
  63         if( xmlSecBnFromDecString( &bn, chNumeral ) < 0 ) {
  64             xmlFree( chNumeral ) ;
  65             xmlSecBnFinalize( &bn ) ;
  66             return Sequence< sal_Int8 >();
  67         }
  68
  69         xmlFree( chNumeral ) ;
  70
  71         length = xmlSecBnGetSize( &bn ) ;
  72         if( length <= 0 ) {
  73             xmlSecBnFinalize( &bn ) ;
  74             return Sequence< sal_Int8 >();
  75         }
  76
  77         bnInteger = xmlSecBnGetData( &bn ) ;
  78         if( bnInteger == NULL ) {
  79             xmlSecBnFinalize( &bn ) ;
  80             return Sequence< sal_Int8 >();
  81         }
  82
  83         Sequence< sal_Int8 > integer( length ) ;
  84         for( unsigned int i = 0 ; i < length ; i ++ )
  85         {
  86             integer[i] = *( bnInteger + i ) ;
  87         }
  88
  89         xmlSecBnFinalize( &bn ) ;
  90         return integer ;
  91     }
  92
  93     return Sequence< sal_Int8 >();
  94 }
  95
  96 OUString bigIntegerToNumericString ( Sequence< sal_Int8 > integer )
  97 {
  98     OUString aRet ;
  99
 100     if( integer.getLength() ) {
 101         xmlSecBn bn ;
 102         xmlChar* chNumeral ;
 103
 104         if( xmlSecBnInitialize( &bn, 0 ) < 0 )
 105             return aRet ;
 106
 107         if( xmlSecBnSetData( &bn, ( const unsigned char* )&integer[0], integer.getLength() ) < 0 ) {
 108             xmlSecBnFinalize( &bn ) ;
 109             return aRet ;
 110         }
 111
 112         chNumeral = xmlSecBnToDecString( &bn ) ;
 113         if( chNumeral == NULL ) {
 114             xmlSecBnFinalize( &bn ) ;
 115             return aRet ;
 116         }
 117
 118         aRet = OUString::createFromAscii( ( const char* )chNumeral ) ;
 119
 120         xmlSecBnFinalize( &bn ) ;
 121         xmlFree( chNumeral ) ;
 122     }
 123
 124     return aRet ;
 125 }
 126