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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <biginteger.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <xmlsec/xmlsec.h>
#include <xmlsec/bn.h>
#include <comphelper/sequence.hxx>
using namespace ::com::sun::star::uno ;
namespace xmlsecurity
{
Sequence< sal_Int8 > numericStringToBigInteger ( std::u16string_view numeral )
{
xmlChar* chNumeral ;
const xmlSecByte* bnInteger ;
xmlSecSize length ;
xmlSecBn bn ;
OString onumeral = OUStringToOString( numeral , RTL_TEXTENCODING_ASCII_US ) ;
chNumeral = xmlStrndup( reinterpret_cast<const xmlChar*>(onumeral.getStr()), static_cast<int>(onumeral.getLength()) ) ;
if( xmlSecBnInitialize( &bn, 0 ) < 0 ) {
xmlFree( chNumeral ) ;
return Sequence< sal_Int8 >();
}
if( xmlSecBnFromDecString( &bn, chNumeral ) < 0 ) {
xmlFree( chNumeral ) ;
xmlSecBnFinalize( &bn ) ;
return Sequence< sal_Int8 >();
}
xmlFree( chNumeral ) ;
length = xmlSecBnGetSize( &bn ) ;
if( length <= 0 ) {
xmlSecBnFinalize( &bn ) ;
return Sequence< sal_Int8 >();
}
bnInteger = xmlSecBnGetData( &bn ) ;
if( bnInteger == nullptr ) {
xmlSecBnFinalize( &bn ) ;
return Sequence< sal_Int8 >();
}
Sequence< sal_Int8 > integer = comphelper::arrayToSequence<sal_Int8>(bnInteger, length);
xmlSecBnFinalize( &bn ) ;
return integer ;
}
OUString bigIntegerToNumericString ( const Sequence< sal_Int8 >& integer )
{
OUString aRet ;
if( integer.hasElements() ) {
xmlSecBn bn ;
xmlChar* chNumeral ;
if( xmlSecBnInitialize( &bn, 0 ) < 0 )
return aRet ;
if( xmlSecBnSetData( &bn, reinterpret_cast<const unsigned char*>(integer.getConstArray()), integer.getLength() ) < 0 ) {
xmlSecBnFinalize( &bn ) ;
return aRet ;
}
chNumeral = xmlSecBnToDecString( &bn ) ;
if( chNumeral == nullptr ) {
xmlSecBnFinalize( &bn ) ;
return aRet ;
}
aRet = OUString::createFromAscii( reinterpret_cast<char*>(chNumeral) ) ;
xmlSecBnFinalize( &bn ) ;
xmlFree( chNumeral ) ;
}
return aRet ;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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