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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 .
*/
#ifndef INCLUDED_XMLSECURITY_SOURCE_FRAMEWORK_SAXEVENTKEEPERIMPL_HXX
#define INCLUDED_XMLSECURITY_SOURCE_FRAMEWORK_SAXEVENTKEEPERIMPL_HXX
#include <com/sun/star/xml/crypto/sax/XSecuritySAXEventKeeper.hpp>
#include <com/sun/star/xml/crypto/sax/XReferenceResolvedBroadcaster.hpp>
#include <com/sun/star/xml/crypto/sax/XSAXEventKeeperStatusChangeBroadcaster.hpp>
#include <com/sun/star/xml/crypto/sax/XSAXEventKeeperStatusChangeListener.hpp>
#include <com/sun/star/xml/csax/XCompressedDocumentHandler.hpp>
#include <com/sun/star/xml/wrapper/XXMLDocumentWrapper.hpp>
#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <cppuhelper/implbase6.hxx>
#include "buffernode.hxx"
#include "elementmark.hxx"
#include "elementcollector.hxx"
#include <vector>
class SAXEventKeeperImpl : public cppu::WeakImplHelper6
<
com::sun::star::xml::crypto::sax::XSecuritySAXEventKeeper,
com::sun::star::xml::crypto::sax::XReferenceResolvedBroadcaster,
com::sun::star::xml::crypto::sax::XSAXEventKeeperStatusChangeBroadcaster,
com::sun::star::xml::sax::XDocumentHandler,
com::sun::star::lang::XInitialization,
com::sun::star::lang::XServiceInfo
>
/****** SAXEventKeeperImpl.hxx/CLASS SAXEventKeeperImpl ***********************
*
* NAME
* SAXEventKeeperImpl -- SAX events buffer controller
*
* FUNCTION
* Controls SAX events to be bufferred, and controls bufferred SAX events
* to be released.
*
* AUTHOR
* Michael Mi
* Email: michael.mi@sun.com
******************************************************************************/
{
private:
/*
* the XMLDocumentWrapper component which maintains all bufferred SAX
* in DOM format.
*/
com::sun::star::uno::Reference<
com::sun::star::xml::wrapper::XXMLDocumentWrapper >
m_xXMLDocument;
/*
* the document handler provided by the XMLDocumentWrapper component.
*/
com::sun::star::uno::Reference<
com::sun::star::xml::sax::XDocumentHandler > m_xDocumentHandler;
/*
* the compressed document handler provided by the XMLDocumentWrapper
* component, the handler has more effient method definition that the
* normal document handler.
*/
com::sun::star::uno::Reference<
com::sun::star::xml::csax::XCompressedDocumentHandler >
m_xCompressedDocumentHandler;
/*
* a listener which receives this SAXEventKeeper's status change
* notification.
* Based on the status changes, the listener can decide whether the
* SAXEventKeeper should chain on/chain off the SAX chain, or whether
* the SAXEventKeeper is useless any long.
*/
com::sun::star::uno::Reference<
com::sun::star::xml::crypto::sax::XSAXEventKeeperStatusChangeListener >
m_xSAXEventKeeperStatusChangeListener;
/*
* the root node of the BufferNode tree.
* the BufferNode tree is used to keep track of all bufferred elements,
* it has the same structure with the document which maintains those
* elements physically.
*/
BufferNode* m_pRootBufferNode;
/*
* the current active BufferNode.
* this is used to keep track the current location in the BufferNode tree,
* the next generated BufferNode will become a child BufferNode of it.
*/
BufferNode* m_pCurrentBufferNode;
/*
* the next Id for a coming ElementMark.
* the variable is increased by 1 when an new ElementMark is generated,
* in this way, we can promise the Id of any ElementMark is unique.
*/
sal_Int32 m_nNextElementMarkId;
/*
* maintains a collection of all ElementMarks.
*/
std::vector< const ElementMark* > m_vElementMarkBuffers;
/*
* maintains a list of new ElementCollectors that will be created
* on the element represented by the next incoming startElement SAX
* event.
* The reason that such the m_vNewElementCollectors is necessary
* is: when an ElementCollector is asked to create, it can't be
* created completely at once, because the BufferNode it will be
* working on has not been created until the next startElement
* SAX event comes.
*/
std::vector< const ElementCollector* > m_vNewElementCollectors;
/*
* maintains the new Blocker that will be created
* on the element represented by the next incoming startElement SAX
* event.
*/
ElementMark* m_pNewBlocker;
/*
* the document handler to which all received SAX events will be
* forwarded.
*/
com::sun::star::uno::Reference<
com::sun::star::xml::sax::XDocumentHandler > m_xNextHandler;
/*
* the current BufferNode which prevents the SAX events to be
* forwarded to the m_xNextHandler.
*/
BufferNode* m_pCurrentBlockingBufferNode;
/*
* maintains a list of ElementMark that has been asked to release.
* Because during processing a request of releasing an ElementMark,
* another releasing ElementMark request can be invoked. To avoid
* reentering the same method, a such request only add that ElementMark
* into this ElementMark list, then all ElementMarks will be processed in
* order.
*/
std::vector< sal_Int32 > m_vReleasedElementMarkBuffers;
/*
* a flag to indicate whether the ElementMark releasing process is runing.
* When a releasing request comes, the assigned ElementMark is added to
* the m_vReleasedElementMarkBuffers first, then this flag is checked.
* If the ElementMark releasing process is not running, then call that
* method.
*/
bool m_bIsReleasing;
/*
* a flag to indicate whether it is the "Forwarding" mode now.
* A "Forwarding" mode means that all received SAX events are from the
* XMLDocumentWrapper component, instead of up-stream component in the
* SAX chain.
* The difference between "Forwarding" mode and normal mode is that:
* no SAX events need to be transferred to the XMLDocumentWrapper component
* again even if a buffer request happens.
*/
bool m_bIsForwarding;
void setCurrentBufferNode(BufferNode* pBufferNode);
BufferNode* addNewElementMarkBuffers();
ElementMark* findElementMarkBuffer(sal_Int32 nId) const;
void removeElementMarkBuffer(sal_Int32 nId);
OUString printBufferNode(
BufferNode* pBufferNode, sal_Int32 nIndent) const;
com::sun::star::uno::Sequence< com::sun::star::uno::Reference<
com::sun::star::xml::wrapper::XXMLElementWrapper > >
collectChildWorkingElement(BufferNode* pBufferNode) const;
void smashBufferNode(
BufferNode* pBufferNode, bool bClearRoot) const;
BufferNode* findNextBlockingBufferNode(
BufferNode* pStartBufferNode) const;
void diffuse(BufferNode* pBufferNode) const;
void releaseElementMarkBuffer();
void markElementMarkBuffer(sal_Int32 nId);
sal_Int32 createElementCollector(
sal_Int32 nSecurityId,
com::sun::star::xml::crypto::sax::ElementMarkPriority nPriority,
bool bModifyElement,
const com::sun::star::uno::Reference<
com::sun::star::xml::crypto::sax::XReferenceResolvedListener>&
xReferenceResolvedListener);
sal_Int32 createBlocker(sal_Int32 nSecurityId);
public:
SAXEventKeeperImpl();
virtual ~SAXEventKeeperImpl();
/* XSAXEventKeeper */
virtual sal_Int32 SAL_CALL addElementCollector( )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL removeElementCollector( sal_Int32 id )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual sal_Int32 SAL_CALL addBlocker( )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL removeBlocker( sal_Int32 id )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual sal_Bool SAL_CALL isBlocking( )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual com::sun::star::uno::Reference<
com::sun::star::xml::wrapper::XXMLElementWrapper > SAL_CALL
getElement( sal_Int32 id )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL setElement(
sal_Int32 id,
const com::sun::star::uno::Reference<
com::sun::star::xml::wrapper::XXMLElementWrapper >&
aElement )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual com::sun::star::uno::Reference<
com::sun::star::xml::sax::XDocumentHandler > SAL_CALL
setNextHandler( const com::sun::star::uno::Reference<
com::sun::star::xml::sax::XDocumentHandler >& xNewHandler )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual OUString SAL_CALL printBufferNodeTree()
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual com::sun::star::uno::Reference<
com::sun::star::xml::wrapper::XXMLElementWrapper > SAL_CALL
getCurrentBlockingNode()
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
/* XSecuritySAXEventKeeper */
virtual sal_Int32 SAL_CALL addSecurityElementCollector(
com::sun::star::xml::crypto::sax::ElementMarkPriority priority,
sal_Bool modifyElement )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual sal_Int32 SAL_CALL cloneElementCollector(
sal_Int32 referenceId,
com::sun::star::xml::crypto::sax::ElementMarkPriority priority )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL setSecurityId( sal_Int32 id, sal_Int32 securityId )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
/* XReferenceResolvedBroadcaster */
virtual void SAL_CALL addReferenceResolvedListener(
sal_Int32 referenceId,
const com::sun::star::uno::Reference<
com::sun::star::xml::crypto::sax::XReferenceResolvedListener >&
listener )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL removeReferenceResolvedListener(
sal_Int32 referenceId,
const com::sun::star::uno::Reference<
com::sun::star::xml::crypto::sax::XReferenceResolvedListener >&
listener )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
/* XSAXEventKeeperStatusChangeBroadcaster */
virtual void SAL_CALL addSAXEventKeeperStatusChangeListener(
const com::sun::star::uno::Reference<
com::sun::star::xml::crypto::sax::XSAXEventKeeperStatusChangeListener >&
listener )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL removeSAXEventKeeperStatusChangeListener(
const com::sun::star::uno::Reference<
com::sun::star::xml::crypto::sax::XSAXEventKeeperStatusChangeListener >&
listener )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
/* XDocumentHandler */
virtual void SAL_CALL startDocument( )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL endDocument( )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL startElement(
const OUString& aName,
const com::sun::star::uno::Reference< com::sun::star::xml::sax::XAttributeList >&
xAttribs )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL endElement( const OUString& aName )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL characters( const OUString& aChars )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL ignorableWhitespace( const OUString& aWhitespaces )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL processingInstruction(
const OUString& aTarget, const OUString& aData )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual void SAL_CALL setDocumentLocator(
const com::sun::star::uno::Reference< com::sun::star::xml::sax::XLocator >& xLocator )
throw (com::sun::star::xml::sax::SAXException, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
/* XInitialization */
virtual void SAL_CALL initialize(
const com::sun::star::uno::Sequence< com::sun::star::uno::Any >& aArguments )
throw (com::sun::star::uno::Exception, com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
/* XServiceInfo */
virtual OUString SAL_CALL getImplementationName( )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
virtual com::sun::star::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames( )
throw (com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
};
OUString SAXEventKeeperImpl_getImplementationName()
throw ( com::sun::star::uno::RuntimeException );
com::sun::star::uno::Sequence< OUString > SAL_CALL SAXEventKeeperImpl_getSupportedServiceNames( )
throw ( com::sun::star::uno::RuntimeException );
com::sun::star::uno::Reference< com::sun::star::uno::XInterface >
SAL_CALL SAXEventKeeperImpl_createInstance( const com::sun::star::uno::Reference< com::sun::star::lang::XMultiServiceFactory > & rSMgr)
throw ( com::sun::star::uno::Exception );
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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