162 lines
4.9 KiB
C++
162 lines
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "encryptionengine.hxx"
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#include <com/sun/star/xml/crypto/XMLEncryptionTemplate.hpp>
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#include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp>
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#include <com/sun/star/lang/XMultiServiceFactory.hpp>
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using namespace com::sun::star::uno;
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namespace cssxc = com::sun::star::xml::crypto;
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namespace cssxw = com::sun::star::xml::wrapper;
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EncryptionEngine::EncryptionEngine( const Reference<XComponentContext> & xContext)
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:m_xContext(xContext), m_nIdOfBlocker(-1)
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{
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}
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bool EncryptionEngine::checkReady() const
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/****** EncryptionEngine/checkReady ******************************************
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*
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* NAME
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* checkReady -- checks the conditions for the main operation.
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*
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* SYNOPSIS
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* bReady = checkReady( );
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*
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* FUNCTION
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* checks whether all following conditions are satisfied:
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* 1. the main operation has't begun yet;
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* 2. the key material is known;
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* 3. the id of the template blocker is known;
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* 4. both the key element and the encryption template
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* are bufferred.
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*
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* RESULT
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* bReady - true if all conditions are satisfied, false otherwise
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******************************************************************************/
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{
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bool rc = true;
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sal_Int32 nKeyInc = 0;
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if (m_nIdOfKeyEC != 0)
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{
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nKeyInc = 1;
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}
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if (m_bMissionDone ||
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m_nIdOfKeyEC == -1 ||
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m_nIdOfBlocker == -1 ||
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1+nKeyInc > m_nNumOfResolvedReferences )
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{
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rc = false;
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}
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return rc;
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}
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void EncryptionEngine::tryToPerform( )
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throw (Exception, RuntimeException)
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/****** EncryptionEngine/tryToPerform ****************************************
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*
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* NAME
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* tryToPerform -- tries to perform the encryption/decryption operation.
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*
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* SYNOPSIS
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* tryToPerform( );
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*
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* FUNCTION
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* if the situation is ready, perform following operations.
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* 1. prepares a encryption template;
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* 2. calls the encryption bridge component;
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* 3. clears up all used resources;
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* 4. notifies the result listener;
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* 5. sets the "accomplishment" flag.
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******************************************************************************/
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{
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if (checkReady())
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{
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Reference < cssxc::XXMLEncryptionTemplate > xEncryptionTemplate =
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cssxc::XMLEncryptionTemplate::create( m_xContext );
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Reference< cssxw::XXMLElementWrapper > xXMLElement
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= m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC );
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xEncryptionTemplate->setTemplate(xXMLElement);
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startEngine( xEncryptionTemplate );
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/*
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* done
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*/
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clearUp( );
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notifyResultListener();
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m_bMissionDone = true;
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}
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}
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void EncryptionEngine::clearUp( ) const
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/****** EncryptionEngine/clearup *********************************************
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*
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* NAME
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* clearUp -- clear up all resources used by this operation.
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*
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* SYNOPSIS
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* clearUp( );
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*
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* FUNCTION
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* cleaning resources up includes:
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* 1. releases the ElementCollector for the encryption template element;
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* 2. releases the Blocker for the encryption template element;
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* 3. releases the ElementCollector for the key element, if there is one.
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******************************************************************************/
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{
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Reference < cssxc::sax::XReferenceResolvedBroadcaster >
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xReferenceResolvedBroadcaster( m_xSAXEventKeeper, UNO_QUERY );
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xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
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m_nIdOfTemplateEC,
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static_cast<const Reference < cssxc::sax::XReferenceResolvedListener > >(static_cast<SecurityEngine *>(const_cast<EncryptionEngine *>(this))));
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m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC);
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if (m_nIdOfBlocker != -1)
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{
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m_xSAXEventKeeper->removeBlocker(m_nIdOfBlocker);
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}
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if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1)
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{
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m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC);
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}
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}
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/* XBlockerMonitor */
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void SAL_CALL EncryptionEngine::setBlockerId( sal_Int32 id )
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throw (css::uno::Exception, css::uno::RuntimeException, std::exception)
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{
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m_nIdOfBlocker = id;
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tryToPerform();
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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