xmlsecurity/source/xmlsec/biginteger.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_xmlsecurity.hxx"
  33
  34 #include <xmlsecurity/biginteger.hxx>
  35
  36 #include <sal/types.h>
  37 //For reasons that escape me, this is what xmlsec does when size_t is not 4
  38 #if SAL_TYPES_SIZEOFPOINTER != 4
  39 #    define XMLSEC_NO_SIZE_T
  40 #endif
  41 #include <xmlsec/xmlsec.h>
  42 #include <xmlsec/bn.h>
  43 #include <com/sun/star/uno/Sequence.hxx>
  44
  45 using namespace ::com::sun::star::uno ;
  46 using ::rtl::OUString ;
  47
  48 Sequence< sal_Int8 > numericStringToBigInteger ( OUString numeral )
  49 {
  50     if( numeral.getStr() != NULL )
  51     {
  52         xmlChar* chNumeral ;
  53         const xmlSecByte* bnInteger ;
  54         xmlSecSize length ;
  55         xmlSecBn bn ;
  56
  57         rtl::OString onumeral = rtl::OUStringToOString( numeral , RTL_TEXTENCODING_ASCII_US ) ;
  58
  59         chNumeral = xmlStrndup( ( const xmlChar* )onumeral.getStr(), ( int )onumeral.getLength() ) ;
  60
  61         if( xmlSecBnInitialize( &bn, 0 ) < 0 ) {
  62             xmlFree( chNumeral ) ;
  63             return Sequence< sal_Int8 >();
  64         }
  65
  66         if( xmlSecBnFromDecString( &bn, chNumeral ) < 0 ) {
  67             xmlFree( chNumeral ) ;
  68             xmlSecBnFinalize( &bn ) ;
  69             return Sequence< sal_Int8 >();
  70         }
  71
  72         xmlFree( chNumeral ) ;
  73
  74         length = xmlSecBnGetSize( &bn ) ;
  75         if( length <= 0 ) {
  76             xmlSecBnFinalize( &bn ) ;
  77             return Sequence< sal_Int8 >();
  78         }
  79
  80         bnInteger = xmlSecBnGetData( &bn ) ;
  81         if( bnInteger == NULL ) {
  82             xmlSecBnFinalize( &bn ) ;
  83             return Sequence< sal_Int8 >();
  84         }
  85
  86         Sequence< sal_Int8 > integer( length ) ;
  87         for( unsigned int i = 0 ; i < length ; i ++ )
  88         {
  89             integer[i] = *( bnInteger + i ) ;
  90         }
  91
  92         xmlSecBnFinalize( &bn ) ;
  93         return integer ;
  94     }
  95
  96     return Sequence< sal_Int8 >();
  97 }
  98
  99 OUString bigIntegerToNumericString ( Sequence< sal_Int8 > integer )
 100 {
 101     OUString aRet ;
 102
 103     if( integer.getLength() ) {
 104         xmlSecBn bn ;
 105         xmlChar* chNumeral ;
 106
 107         if( xmlSecBnInitialize( &bn, 0 ) < 0 )
 108             return aRet ;
 109
 110         if( xmlSecBnSetData( &bn, ( const unsigned char* )&integer[0], integer.getLength() ) < 0 ) {
 111             xmlSecBnFinalize( &bn ) ;
 112             return aRet ;
 113         }
 114
 115         chNumeral = xmlSecBnToDecString( &bn ) ;
 116         if( chNumeral == NULL ) {
 117             xmlSecBnFinalize( &bn ) ;
 118             return aRet ;
 119         }
 120
 121         aRet = OUString::createFromAscii( ( const char* )chNumeral ) ;
 122
 123         xmlSecBnFinalize( &bn ) ;
 124         xmlFree( chNumeral ) ;
 125     }
 126
 127     return aRet ;
 128 }
 129