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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 "signatureengine.hxx"
#include <com/sun/star/xml/crypto/XXMLSignatureTemplate.hpp>
#include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
using namespace com::sun::star::uno;
namespace cssu = com::sun::star::uno;
namespace cssl = com::sun::star::lang;
namespace cssxc = com::sun::star::xml::crypto;
namespace cssxw = com::sun::star::xml::wrapper;
#define SIGNATURE_TEMPLATE "com.sun.star.xml.crypto.XMLSignatureTemplate"
SignatureEngine::SignatureEngine( const Reference<XComponentContext> & xContext)
: m_xContext(xContext), m_nTotalReferenceNumber(-1)
{
}
bool SignatureEngine::checkReady() const
/****** SignatureEngine/checkReady *******************************************
*
* NAME
* checkReady -- checks the conditions for the main operation.
*
* SYNOPSIS
* bReady = checkReady( );
*
* FUNCTION
* checks whether all following conditions are satisfied:
* 1. the main operation has't begun yet;
* 2. the key material is known;
* 3. the amount of reference is known;
* 4. all of referenced elements, the key element and the signature
* template are bufferred.
*
* INPUTS
* empty
*
* RESULT
* bReady - true if all conditions are satisfied, false otherwise
*
* AUTHOR
* Michael Mi
* Email: michael.mi@sun.com
******************************************************************************/
{
bool rc = true;
sal_Int32 nKeyInc = 0;
if (m_nIdOfKeyEC != 0)
{
nKeyInc = 1;
}
if (m_bMissionDone ||
m_nIdOfKeyEC == -1 ||
m_nTotalReferenceNumber == -1 ||
m_nTotalReferenceNumber+1+nKeyInc > m_nNumOfResolvedReferences)
{
rc = false;
}
return rc;
}
void SignatureEngine::tryToPerform( )
throw (cssu::Exception, cssu::RuntimeException)
/****** SignatureEngine/tryToPerform *****************************************
*
* NAME
* tryToPerform -- tries to perform the signature operation.
*
* SYNOPSIS
* tryToPerform( );
*
* FUNCTION
* if the situation is ready, perform following operations.
* 1. prepares a signature template;
* 2. calls the signature bridge component;
* 3. clears up all used resources;
* 4. notifies the result listener;
* 5. sets the "accomplishment" flag.
*
* INPUTS
* empty
*
* RESULT
* empty
*
* AUTHOR
* Michael Mi
* Email: michael.mi@sun.com
******************************************************************************/
{
if (checkReady())
{
const OUString ouSignatureTemplate ( SIGNATURE_TEMPLATE );
cssu::Reference < cssxc::XXMLSignatureTemplate >
xSignatureTemplate( m_xContext->getServiceManager()->createInstanceWithContext( ouSignatureTemplate, m_xContext ), cssu::UNO_QUERY );
OSL_ASSERT( xSignatureTemplate.is() );
cssu::Reference< cssxw::XXMLElementWrapper >
xXMLElement = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC );
xSignatureTemplate->setTemplate(xXMLElement);
std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
for( ; ii != m_vReferenceIds.end() ; ++ii )
{
xXMLElement = m_xSAXEventKeeper->getElement( *ii );
xSignatureTemplate->setTarget(xXMLElement);
}
/*
* set the Uri binding
*/
xSignatureTemplate->setBinding( this );
startEngine( xSignatureTemplate );
/*
* done
*/
clearUp( );
notifyResultListener();
m_bMissionDone = true;
}
}
void SignatureEngine::clearUp( ) const
/****** SignatureEngine/clearUp **********************************************
*
* NAME
* clearUp -- clear up all resources used by this operation.
*
* SYNOPSIS
* clearUp( );
*
* FUNCTION
* cleaning resources up includes:
* 1. releases the ElementCollector for the signature template element;
* 2. releases ElementCollectors for referenced elements;
* 3. releases the ElementCollector for the key element, if there is one.
*
* INPUTS
* empty
*
* RESULT
* empty
*
* AUTHOR
* Michael Mi
* Email: michael.mi@sun.com
******************************************************************************/
{
cssu::Reference < cssxc::sax::XReferenceResolvedBroadcaster >
xReferenceResolvedBroadcaster( m_xSAXEventKeeper, cssu::UNO_QUERY );
xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
m_nIdOfTemplateEC,
(const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC);
std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
for( ; ii != m_vReferenceIds.end() ; ++ii )
{
xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
*ii,
(const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
m_xSAXEventKeeper->removeElementCollector(*ii);
}
if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1)
{
m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC);
}
}
/* XReferenceCollector */
void SAL_CALL SignatureEngine::setReferenceCount( sal_Int32 count )
throw (cssu::Exception, cssu::RuntimeException)
{
m_nTotalReferenceNumber = count;
tryToPerform();
}
void SAL_CALL SignatureEngine::setReferenceId( sal_Int32 id )
throw (cssu::Exception, cssu::RuntimeException)
{
m_vReferenceIds.push_back( id );
}
/* XUriBinding */
void SAL_CALL SignatureEngine::setUriBinding(
const OUString& uri,
const cssu::Reference< com::sun::star::io::XInputStream >& aInputStream )
throw (cssu::Exception, cssu::RuntimeException)
{
m_vUris.push_back(uri);
m_vXInputStreams.push_back(aInputStream);
}
cssu::Reference< com::sun::star::io::XInputStream > SAL_CALL SignatureEngine::getUriBinding( const OUString& uri )
throw (cssu::Exception, cssu::RuntimeException)
{
cssu::Reference< com::sun::star::io::XInputStream > xInputStream;
int size = m_vUris.size();
for( int i=0; i<size; ++i)
{
if (m_vUris[i] == uri)
{
xInputStream = m_vXInputStreams[i];
break;
}
}
return xInputStream;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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