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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 <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: */