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Diffstat (limited to 'xmlsecurity/source/framework/signatureengine.cxx')
| -rw-r--r-- | xmlsecurity/source/framework/signatureengine.cxx | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/xmlsecurity/source/framework/signatureengine.cxx b/xmlsecurity/source/framework/signatureengine.cxx new file mode 100644 index 000000000..0390ea7e6 --- /dev/null +++ b/xmlsecurity/source/framework/signatureengine.cxx @@ -0,0 +1,197 @@ +/* -*- 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 <framework/signatureengine.hxx> +#include <framework/xmlsignaturetemplateimpl.hxx> +#include <rtl/ref.hxx> + +namespace com::sun::star::xml::wrapper { class XXMLElementWrapper; } + +using namespace com::sun::star::uno; + +SignatureEngine::SignatureEngine() + : 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 buffered. + * + * RESULT + * bReady - true if all conditions are satisfied, false otherwise + ******************************************************************************/ +{ + 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( ) +/****** SignatureEngine/tryToPerform ***************************************** + * + * NAME + * tryToPerform -- tries to perform the signature operation. + * + * 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. + ******************************************************************************/ +{ + if (!checkReady()) + return; + + rtl::Reference<XMLSignatureTemplateImpl> xSignatureTemplate = new XMLSignatureTemplateImpl(); + + css::uno::Reference< css::xml::wrapper::XXMLElementWrapper > + xXMLElement = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC ); + + xSignatureTemplate->setTemplate(xXMLElement); + + for( const auto i : m_vReferenceIds ) + { + xXMLElement = m_xSAXEventKeeper->getElement( i ); + 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. + * + * 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. + ******************************************************************************/ +{ + css::uno::Reference < css::xml::crypto::sax::XReferenceResolvedBroadcaster > + xReferenceResolvedBroadcaster( m_xSAXEventKeeper, css::uno::UNO_QUERY ); + xReferenceResolvedBroadcaster->removeReferenceResolvedListener( + m_nIdOfTemplateEC, + static_cast<const css::uno::Reference < css::xml::crypto::sax::XReferenceResolvedListener > >(static_cast<SecurityEngine *>(const_cast<SignatureEngine *>(this)))); + + m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC); + + for( const auto& i : m_vReferenceIds ) + { + xReferenceResolvedBroadcaster->removeReferenceResolvedListener( + i, + static_cast<const css::uno::Reference < css::xml::crypto::sax::XReferenceResolvedListener > >(static_cast<SecurityEngine *>(const_cast<SignatureEngine *>(this)))); + m_xSAXEventKeeper->removeElementCollector(i); + } + + if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1) + { + m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC); + } +} + +/* XReferenceCollector */ +void SAL_CALL SignatureEngine::setReferenceCount( sal_Int32 count ) +{ + m_nTotalReferenceNumber = count; + tryToPerform(); +} + +void SAL_CALL SignatureEngine::setReferenceId( sal_Int32 id ) +{ + m_vReferenceIds.push_back( id ); +} + +/* XUriBinding */ +void SAL_CALL SignatureEngine::setUriBinding( + const OUString& uri, + const css::uno::Reference< css::io::XInputStream >& aInputStream ) +{ + m_vUris.push_back(uri); + m_vXInputStreams.push_back(aInputStream); +} + +css::uno::Reference< css::io::XInputStream > SAL_CALL SignatureEngine::getUriBinding( const OUString& uri ) +{ + css::uno::Reference< css::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: */ |