/* -*- 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 . */ // File: ooofilt.cxx // Contents: Filter Implementation for OpenOffice.Org Document using // Indexing Service // Summary: The LibreOffice filter reads OpenOffice.org XML files (with // the extension .sxw .sxi, etc) and ODF files and extract // their content, author, keywords,subject,comments and title // to be filtered. // Platform: Windows 2000, Windows XP #include #include #include #include // Include file Purpose // windows.h Win32 declarations // string.h string wstring declarations // filter.h IFilter interface declarations // filterr.h FACILITY_ITF error definitions for IFilter // ntquery.h Indexing Service declarations // assert.h assertion function. // ooofilt.hxx LibreOffice filter declarations // propspec.hxx PROPSPEC #if !defined WIN32_LEAN_AND_MEAN # define WIN32_LEAN_AND_MEAN #endif #include #include #include #include #include #include #include "ooofilt.hxx" #include #include #include "propspec.hxx" #include #include // declarations of DllRegisterServer/DllUnregisterServer //C------------------------------------------------------------------------- // Class: COooFilter // Summary: Implements LibreOffice filter class //M------------------------------------------------------------------------- // Method: COooFilter::COooFilter // Summary: Class constructor // Arguments: void // Purpose: Manages global instance count COooFilter::COooFilter() : m_lRefs(1), m_pContentReader(nullptr), m_pMetaInfoReader(nullptr), m_eState(FilterState::FilteringContent), m_ulUnicodeBufferLen(0), m_ulUnicodeCharsRead(0), m_ulPropertyNum(0), m_ulCurrentPropertyNum(0), m_ulChunkID(1), m_fContents(false), m_fEof(false), m_ChunkPosition(0), m_cAttributes(0), m_pAttributes(nullptr), m_pStream(nullptr) { InterlockedIncrement( &g_lInstances ); } //M------------------------------------------------------------------------- // Method: COooFilter::~COooFilter // Summary: Class destructor // Arguments: void // Purpose: Manages global instance count and file handle COooFilter::~COooFilter() { delete [] m_pAttributes; delete m_pContentReader; delete m_pMetaInfoReader; delete m_pStream; InterlockedDecrement( &g_lInstances ); } //M------------------------------------------------------------------------- // Method: COooFilter::QueryInterface (IUnknown::QueryInterface) // Summary: Queries for requested interface // Arguments: riid // [in] Reference IID of requested interface // ppvObject // [out] Address that receives requested interface pointer // Returns: S_OK // Interface is supported // E_NOINTERFACE // Interface is not supported HRESULT STDMETHODCALLTYPE COooFilter::QueryInterface( REFIID riid, void ** ppvObject) { IUnknown *pUnkTemp = nullptr; if ( IID_IFilter == riid ) pUnkTemp = static_cast(static_cast(this)); else if ( IID_IPersistFile == riid ) pUnkTemp = static_cast(static_cast(this)); else if ( IID_IPersist == riid ) pUnkTemp = static_cast(static_cast(static_cast(this))); else if (IID_IPersistStream == riid) pUnkTemp = static_cast(static_cast(this)); else if ( IID_IUnknown == riid ) pUnkTemp = static_cast(static_cast(static_cast(this))); else { *ppvObject = nullptr; return E_NOINTERFACE; } *ppvObject = pUnkTemp; pUnkTemp->AddRef(); return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilter::AddRef (IUnknown::AddRef) // Summary: Increments interface refcount // Arguments: void // Returns: Value of incremented interface refcount ULONG STDMETHODCALLTYPE COooFilter::AddRef() { return InterlockedIncrement( &m_lRefs ); } //M------------------------------------------------------------------------- // Method: COooFilter::Release (IUnknown::Release) // Summary: Decrements interface refcount, deleting if unreferenced // Arguments: void // Returns: Value of decremented interface refcount ULONG STDMETHODCALLTYPE COooFilter::Release() { ULONG ulTmp = InterlockedDecrement( &m_lRefs ); if ( 0 == ulTmp ) delete this; return ulTmp; } //M------------------------------------------------------------------------- // Method: COooFilter::Init (IFilter::Init) // Summary: Initializes LibreOffice filter instance // Arguments: grfFlags // [in] Flags for filter behavior // cAttributes // [in] Number attributes in array aAttributes // aAttributes // [in] Array of requested attribute strings // pFlags // [out] Pointer to return flags for additional properties // Returns: S_OK // Initialization succeeded // E_FAIL // File not previously loaded // E_INVALIDARG // Count and contents of attributes do not agree // FILTER_E_ACCESS // Unable to access file to be filtered // FILTER_E_PASSWORD // (not implemented) const int COUNT_ATTRIBUTES = 5; SCODE STDMETHODCALLTYPE COooFilter::Init( ULONG grfFlags, ULONG cAttributes, FULLPROPSPEC const * aAttributes, ULONG * pFlags) { // Enumerate OLE properties, since any NTFS file can have them *pFlags = IFILTER_FLAGS_OLE_PROPERTIES; try { m_fContents = false; m_ulPropertyNum = 0; m_ulCurrentPropertyNum = 0; if ( m_cAttributes > 0 ) { delete[] m_pAttributes; m_pAttributes = nullptr; m_cAttributes = 0; } if( 0 < cAttributes ) { // Filter properties specified in aAttributes if ( nullptr == aAttributes ) return E_INVALIDARG; m_pAttributes = new CFullPropSpec[cAttributes]; m_cAttributes = cAttributes; // Is caller want to filter contents? CFullPropSpec const *pAttrib = reinterpret_cast(aAttributes); ULONG ulNumAttr; for ( ulNumAttr = 0 ; ulNumAttr < cAttributes; ulNumAttr++ ) { if ( pAttrib[ulNumAttr].IsPropertyPropid() && pAttrib[ulNumAttr].GetPropertyPropid() == PID_STG_CONTENTS && pAttrib[ulNumAttr].GetPropSet() == guidStorage ) { m_fContents = true; } // save the requested properties. m_pAttributes[ulNumAttr] = pAttrib[ulNumAttr]; } } else if ( grfFlags & IFILTER_INIT_APPLY_INDEX_ATTRIBUTES ) { // Filter contents and all pseudo-properties m_fContents = true; m_pAttributes = new CFullPropSpec[COUNT_ATTRIBUTES]; m_cAttributes = COUNT_ATTRIBUTES; m_pAttributes[0].SetPropSet( FMTID_SummaryInformation ); m_pAttributes[0].SetProperty( PIDSI_AUTHOR ); m_pAttributes[1].SetPropSet( FMTID_SummaryInformation ); m_pAttributes[1].SetProperty( PIDSI_TITLE ); m_pAttributes[2].SetPropSet( FMTID_SummaryInformation ); m_pAttributes[2].SetProperty( PIDSI_SUBJECT ); m_pAttributes[3].SetPropSet( FMTID_SummaryInformation ); m_pAttributes[3].SetProperty( PIDSI_KEYWORDS ); m_pAttributes[4].SetPropSet( FMTID_SummaryInformation ); m_pAttributes[4].SetProperty( PIDSI_COMMENTS ); } else if ( 0 == grfFlags ) { // Filter only contents m_fContents = true; } else m_fContents = false; // Re-initialize if ( m_fContents ) { m_fEof = false; m_eState = FilterState::FilteringContent; m_ulUnicodeCharsRead = 0; m_ChunkPosition = 0; } else { m_fEof = true; m_eState = FilterState::FilteringProperty; } m_ulChunkID = 1; } catch (const std::exception&) { return E_FAIL; } return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilter::GetChunk (IFilter::GetChunk) // Summary: Gets the next chunk // Arguments: ppStat // [out] Pointer to description of current chunk // Returns: S_OK // Chunk was successfully retrieved // E_FAIL // Character conversion failed // FILTER_E_ACCESS // General access failure occurred // FILTER_E_END_OF_CHUNKS // Previous chunk was the last chunk // FILTER_E_EMBEDDING_UNAVAILABLE // (not implemented) // FILTER_E_LINK_UNAVAILABLE // (not implemented) // FILTER_E_PASSWORD // (not implemented) SCODE STDMETHODCALLTYPE COooFilter::GetChunk(STAT_CHUNK * pStat) { for(;;) { switch ( m_eState ) { case FilterState::FilteringContent: { if( m_ChunkPosition == m_pContentReader ->getChunkBuffer().size() ) { m_ulUnicodeBufferLen=0; m_fEof = true; } if ( !m_fContents || m_fEof ) { m_eState = FilterState::FilteringProperty; continue; } m_pwsBuffer = m_pContentReader -> getChunkBuffer()[m_ChunkPosition].second; m_ulUnicodeBufferLen = static_cast(m_pwsBuffer.length()); DWORD ChunkLCID = LocaleSetToLCID( m_pContentReader -> getChunkBuffer()[m_ChunkPosition].first ); // Set chunk description pStat->idChunk = m_ulChunkID; pStat->breakType = CHUNK_NO_BREAK; pStat->flags = CHUNK_TEXT; pStat->locale = ChunkLCID; pStat->attribute.guidPropSet = guidStorage; pStat->attribute.psProperty.ulKind = PRSPEC_PROPID; pStat->attribute.psProperty.propid = PID_STG_CONTENTS; pStat->idChunkSource = m_ulChunkID; pStat->cwcStartSource = 0; pStat->cwcLenSource = 0; m_ulUnicodeCharsRead = 0; m_ulChunkID++; m_ChunkPosition++; return S_OK; } case FilterState::FilteringProperty: { if ( m_cAttributes == 0 ) return FILTER_E_END_OF_CHUNKS; while( !( ( m_pAttributes[m_ulPropertyNum].IsPropertyPropid() ) && ( m_pAttributes[m_ulPropertyNum].GetPropSet() == FMTID_SummaryInformation ) )|| ( ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_AUTHOR ) && ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_TITLE ) && ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_SUBJECT ) && ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_KEYWORDS ) && ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_COMMENTS ) ) ) { if ( m_ulPropertyNum < m_cAttributes ) m_ulPropertyNum++; else break; } if ( m_ulPropertyNum == m_cAttributes) return FILTER_E_END_OF_CHUNKS; else { // Set chunk description pStat->idChunk = m_ulChunkID; pStat->breakType = CHUNK_EOS; pStat->flags = CHUNK_VALUE; pStat->locale = GetSystemDefaultLCID(); pStat->attribute.guidPropSet = FMTID_SummaryInformation; pStat->attribute.psProperty.ulKind = PRSPEC_PROPID; pStat->attribute.psProperty.propid = m_pAttributes[m_ulPropertyNum].GetPropertyPropid(); pStat->idChunkSource = m_ulChunkID; pStat->cwcStartSource = 0; pStat->cwcLenSource = 0; m_ulCurrentPropertyNum = m_ulPropertyNum; m_ulPropertyNum++; m_ulChunkID++; return S_OK; } } }//switch(...) }//for(;;) } //M------------------------------------------------------------------------- // Method: COooFilter::GetText (IFilter::GetText) // Summary: Retrieves UNICODE text for index // Arguments: pcwcBuffer // [in] Pointer to size of UNICODE buffer // [out] Pointer to count of UNICODE characters returned // awcBuffer // [out] Pointer to buffer to receive UNICODE text // Returns: S_OK // Text successfully retrieved, but text remains in chunk // FILTER_E_NO_MORE_TEXT // All of the text in the current chunk has been returned // FILTER_S_LAST_TEXT // Next call to GetText will return FILTER_E_NO_MORE_TEXT SCODE STDMETHODCALLTYPE COooFilter::GetText(ULONG * pcwcBuffer, WCHAR * awcBuffer) { switch ( m_eState ) { case FilterState::FilteringProperty: return FILTER_E_NO_TEXT; case FilterState::FilteringContent: { if ( !m_fContents || 0 == m_ulUnicodeBufferLen ) { *pcwcBuffer = 0; return FILTER_E_NO_MORE_TEXT; } // Copy UNICODE characters in chunk buffer to output UNICODE buffer ULONG ulToCopy = min( *pcwcBuffer, m_ulUnicodeBufferLen - m_ulUnicodeCharsRead ); wmemcpy( awcBuffer, m_pwsBuffer.c_str() + m_ulUnicodeCharsRead, ulToCopy ); ZeroMemory( awcBuffer + ulToCopy, (*pcwcBuffer - ulToCopy) * sizeof (WCHAR)); m_ulUnicodeCharsRead += ulToCopy; *pcwcBuffer = ulToCopy; if ( m_ulUnicodeBufferLen == m_ulUnicodeCharsRead ) { m_ulUnicodeCharsRead = 0; m_ulUnicodeBufferLen = 0; return FILTER_S_LAST_TEXT; } return S_OK; } } return E_FAIL; // Should not happen! } //M------------------------------------------------------------------------- // Method: GetMetaInfoNameFromPropertyId // Summary: helper function to convert PropertyID into respective // MetaInfo names. // Arguments: ulPropID // [in] property ID // Returns: corresponding metainfo names. static ::std::wstring GetMetaInfoNameFromPropertyId( ULONG ulPropID ) { switch ( ulPropID ) { case PIDSI_AUTHOR: return META_INFO_AUTHOR; case PIDSI_TITLE: return META_INFO_TITLE; case PIDSI_SUBJECT: return META_INFO_SUBJECT; case PIDSI_KEYWORDS: return META_INFO_KEYWORDS; case PIDSI_COMMENTS: return META_INFO_DESCRIPTION; default: return EMPTY_STRING; } } //M------------------------------------------------------------------------- // Method: COooFilter::GetValue (IFilter::GetValue) // Summary: Retrieves properties for index // Arguments: ppPropValue // [out] Address that receives pointer to property value // Returns: FILTER_E_NO_VALUES // Always // FILTER_E_NO_MORE_VALUES // (not implemented) SCODE STDMETHODCALLTYPE COooFilter::GetValue(PROPVARIANT ** ppPropValue) { if (m_eState == FilterState::FilteringContent) return FILTER_E_NO_VALUES; else // m_eState == FilteringProperty { if ( m_cAttributes == 0 || ( m_ulCurrentPropertyNum == m_ulPropertyNum ) ) return FILTER_E_NO_MORE_VALUES; PROPVARIANT *pPropVar = static_cast(CoTaskMemAlloc( sizeof (PROPVARIANT) )); if ( pPropVar == nullptr ) return E_OUTOFMEMORY; ::std::wstring wsTagName= GetMetaInfoNameFromPropertyId( m_pAttributes[m_ulCurrentPropertyNum].GetPropertyPropid() ); if ( wsTagName == EMPTY_STRING ) return FILTER_E_NO_VALUES; ::std::wstring wsTagData = m_pMetaInfoReader->getTagData(wsTagName); pPropVar->vt = VT_LPWSTR; size_t cw = wsTagData.length() + 1; // reserve one for the '\0' pPropVar->pwszVal = static_cast( CoTaskMemAlloc(cw*sizeof(WCHAR)) ); if (pPropVar->pwszVal == nullptr) { CoTaskMemFree(pPropVar); return E_OUTOFMEMORY; } wmemcpy(pPropVar->pwszVal, wsTagData.c_str(), cw); *ppPropValue = pPropVar; m_ulCurrentPropertyNum = m_ulPropertyNum; return S_OK; } } //M------------------------------------------------------------------------- // Method: COooFilter::BindRegion (IFilter::BindRegion) // Summary: Creates moniker or other interface for indicated text // Arguments: origPos // [in] Description of text location and extent // riid // [in] Reference IID of specified interface // ppunk // [out] Address that receives requested interface pointer // Returns: E_NOTIMPL // Always // FILTER_W_REGION_CLIPPED // (not implemented) SCODE STDMETHODCALLTYPE COooFilter::BindRegion( FILTERREGION /*origPos*/, REFIID /*riid*/, void ** /*ppunk*/) { // BindRegion is currently reserved for future use return E_NOTIMPL; } //M------------------------------------------------------------------------- // Method: COooFilter::GetClassID (IPersist::GetClassID) // Summary: Retrieves the class id of the filter class // Arguments: pClassID // [out] Pointer to the class ID of the filter // Returns: S_OK // Always // E_FAIL // (not implemented) HRESULT STDMETHODCALLTYPE COooFilter::GetClassID(CLSID * pClassID) { *pClassID = CLSID_COooFilter; return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilter::IsDirty (IPersistFile::IsDirty) // Summary: Checks whether file has changed since last save // Arguments: void // Returns: S_FALSE // Always // S_OK // (not implemented) HRESULT STDMETHODCALLTYPE COooFilter::IsDirty() { // File is opened read-only and never changes return S_FALSE; } //M------------------------------------------------------------------------- // Method: COooFilter::Load (IPersistFile::Load) // Summary: Opens and initializes the specified file // Arguments: pszFileName // [in] Pointer to zero-terminated string // of absolute path of file to open // dwMode // [in] Access mode to open the file // Returns: S_OK // File was successfully loaded // E_OUTOFMEMORY // File could not be loaded due to insufficient memory // E_FAIL // (not implemented) HRESULT STDMETHODCALLTYPE COooFilter::Load(LPCOLESTR pszFileName, DWORD /*dwMode*/) { // Load just sets the filename for GetChunk to read and ignores the mode m_pwszFileName = getShortPathName( pszFileName ); // Open the file previously specified in call to IPersistFile::Load and get content. try { delete m_pMetaInfoReader; m_pMetaInfoReader = new CMetaInfoReader(m_pwszFileName); delete m_pContentReader; m_pContentReader = new CContentReader(m_pwszFileName, m_pMetaInfoReader->getDefaultLocale()); } catch (const std::exception&) { return E_FAIL; } return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilter::Save (IPersistFile::Save) // Summary: Saves a copy of the current file being filtered // Arguments: pszFileName // [in] Pointer to zero-terminated string of // absolute path of where to save file // fRemember // [in] Whether the saved copy is made the current file // Returns: E_FAIL // Always // S_OK // (not implemented) HRESULT STDMETHODCALLTYPE COooFilter::Save(LPCOLESTR /*pszFileName*/, BOOL /*fRemember*/) { // File is opened read-only; saving it is an error return E_FAIL; } //M------------------------------------------------------------------------- // Method: COooFilter::SaveCompleted (IPersistFile::SaveCompleted) // Summary: Determines whether a file save is completed // Arguments: pszFileName // [in] Pointer to zero-terminated string of // absolute path where file was previously saved // Returns: S_OK // Always HRESULT STDMETHODCALLTYPE COooFilter::SaveCompleted(LPCOLESTR /*pszFileName*/) { // File is opened read-only, so "save" is always finished return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilter::Load (IPersistStream::Load) // Summary: Initializes an object from the stream where it was previously saved // Arguments: pStm // [in] Pointer to stream from which object should be loaded // Returns: S_OK // E_OUTOFMEMORY // E_FAIL HRESULT STDMETHODCALLTYPE COooFilter::Load(IStream *pStm) { m_pStream = new BufferStream(pStm); try { delete m_pMetaInfoReader; m_pMetaInfoReader = new CMetaInfoReader(m_pStream); delete m_pContentReader; m_pContentReader = new CContentReader(m_pStream, m_pMetaInfoReader->getDefaultLocale()); } catch (const std::exception&) { return E_FAIL; } return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilter::GetSizeMax (IPersistStream::GetSizeMax) // Summary: Returns the size in bytes of the stream needed to save the object. // Arguments: pcbSize // [out] Pointer to a 64 bit unsigned int indicating the size needed // Returns: E_NOTIMPL HRESULT STDMETHODCALLTYPE COooFilter::GetSizeMax(ULARGE_INTEGER * /*pcbSize*/) { return E_NOTIMPL; } //M------------------------------------------------------------------------- // Method: COooFilter::Save (IPersistStream::Save) // Summary: Save object to specified stream // Arguments: pStm // [in] Pointer to stream // fClearDirty // [in] Indicates whether to clear dirty flag // Returns: E_NOTIMPL HRESULT STDMETHODCALLTYPE COooFilter::Save(IStream * /*pStm*/, BOOL ) { return E_NOTIMPL; } //M------------------------------------------------------------------------- // Method: COooFilter::GetCurFile (IPersistFile::GetCurFile) // Summary: Returns a copy of the current file name // Arguments: ppszFileName // [out] Address to receive pointer to zero-terminated // string for absolute path to current file // Returns: S_OK // A valid absolute path was successfully returned // S_FALSE // (not implemented) // E_OUTOFMEMORY // Operation failed due to insufficient memory // E_FAIL // Operation failed due to some reason // other than insufficient memory HRESULT STDMETHODCALLTYPE COooFilter::GetCurFile(LPOLESTR * ppszFileName) { if ( EMPTY_STRING == m_pwszFileName ) return E_FAIL; else *ppszFileName = const_cast(m_pwszFileName.c_str()); return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilterCF::COooFilterCF // Summary: Class factory constructor // Arguments: void // Purpose: Manages global instance count COooFilterCF::COooFilterCF() : m_lRefs(1) { InterlockedIncrement( &g_lInstances ); } //M------------------------------------------------------------------------- // Method: COooFilterCF::~COooFilterCF // Summary: Class factory destructor // Arguments: void // Purpose: Manages global instance count COooFilterCF::~COooFilterCF() { InterlockedDecrement( &g_lInstances ); } //M------------------------------------------------------------------------- // Method: COooFilterCF::QueryInterface (IUnknown::QueryInterface) // Summary: Queries for requested interface // Arguments: riid // [in] Reference IID of requested interface // ppvObject // [out] Address that receives requested interface pointer // Returns: S_OK // Interface is supported // E_NOINTERFACE // Interface is not supported HRESULT STDMETHODCALLTYPE COooFilterCF::QueryInterface(REFIID riid, void ** ppvObject) { IUnknown *pUnkTemp; if ( IID_IClassFactory == riid ) pUnkTemp = static_cast(static_cast(this)); else if ( IID_IUnknown == riid ) pUnkTemp = static_cast(this); else { *ppvObject = nullptr; return E_NOINTERFACE; } *ppvObject = pUnkTemp; pUnkTemp->AddRef(); return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilterCF::AddRef (IUnknown::AddRef) // Summary: Increments interface refcount // Arguments: void // Returns: Value of incremented interface refcount ULONG STDMETHODCALLTYPE COooFilterCF::AddRef() { return InterlockedIncrement( &m_lRefs ); } //M------------------------------------------------------------------------- // Method: COooFilterCF::Release (IUnknown::Release) // Summary: Decrements interface refcount, deleting if unreferenced // Arguments: void // Returns: Value of decremented refcount ULONG STDMETHODCALLTYPE COooFilterCF::Release() { ULONG ulTmp = InterlockedDecrement( &m_lRefs ); if ( 0 == ulTmp ) delete this; return ulTmp; } //M------------------------------------------------------------------------- // Method: COooFilterCF::CreateInstance (IClassFactory::CreateInstance) // Summary: Creates new LibreOffice filter object // Arguments: pUnkOuter // [in] Pointer to IUnknown interface of aggregating object // riid // [in] Reference IID of requested interface // ppvObject // [out] Address that receives requested interface pointer // Returns: S_OK // LibreOffice filter object was successfully created // CLASS_E_NOAGGREGATION // pUnkOuter parameter was non-NULL // E_NOINTERFACE // (not implemented) // E_OUTOFMEMORY // LibreOffice filter object could not be created // due to insufficient memory // E_UNEXPECTED // Unsuccessful due to an unexpected condition HRESULT STDMETHODCALLTYPE COooFilterCF::CreateInstance( IUnknown * pUnkOuter, REFIID riid, void * * ppvObject) { COooFilter *pIUnk = nullptr; if ( nullptr != pUnkOuter ) return CLASS_E_NOAGGREGATION; pIUnk = new COooFilter(); if ( SUCCEEDED( pIUnk->QueryInterface( riid , ppvObject ) ) ) { // Release extra refcount from QueryInterface pIUnk->Release(); } else { delete pIUnk; return E_UNEXPECTED; } return S_OK; } //M------------------------------------------------------------------------- // Method: COooFilterCF::LockServer (IClassFactory::LockServer) // Summary: Forces/allows filter class to remain loaded/be unloaded // Arguments: fLock // [in] TRUE to lock, FALSE to unlock // Returns: S_OK // Always // E_FAIL // (not implemented) // E_OUTOFMEMORY // (not implemented) // E_UNEXPECTED // (not implemented) HRESULT STDMETHODCALLTYPE COooFilterCF::LockServer(BOOL fLock) { if( fLock ) InterlockedIncrement( &g_lInstances ); else InterlockedDecrement( &g_lInstances ); return S_OK; } //+------------------------------------------------------------------------- // DLL: ooofilt.dll // Summary: Implements Dynamic Link Library functions for LibreOffice filter //F------------------------------------------------------------------------- // Function: DllMain // Summary: Called from C-Runtime on process/thread attach/detach // Arguments: hInstance // [in] Handle to the DLL // fdwReason // [in] Reason for calling DLL entry point // lpReserve // [in] Details of DLL initialization and cleanup // Returns: TRUE // Always extern "C" BOOL WINAPI DllMain( HINSTANCE hInstance, DWORD fdwReason, LPVOID /*lpvReserved*/ ) { if ( DLL_PROCESS_ATTACH == fdwReason ) DisableThreadLibraryCalls( hInstance ); return TRUE; } //F------------------------------------------------------------------------- // Function: DllGetClassObject // Summary: Create LibreOffice filter class factory object // Arguments: cid // [in] Class ID of class that class factory creates // iid // [in] Reference IID of requested class factory interface // ppvObj // [out] Address that receives requested interface pointer // Returns: S_OK // Class factory object was created successfully // CLASS_E_CLASSNOTAVAILABLE // DLL does not support the requested class // E_INVALIDARG // (not implemented // E_OUTOFMEMORY // Insufficient memory to create the class factory object // E_UNEXPECTED // Unsuccessful due to an unexpected condition extern "C" HRESULT STDMETHODCALLTYPE DllGetClassObject( REFCLSID cid, REFIID iid, LPVOID * ppvObj ) { COooFilterCF* pImpl = nullptr; IUnknown *pResult = nullptr; if ( CLSID_COooFilter == cid ) { pImpl = new COooFilterCF; pResult = static_cast(pImpl); } else return CLASS_E_CLASSNOTAVAILABLE; if( SUCCEEDED( pResult->QueryInterface( iid, ppvObj ) ) ) // Release extra refcount from QueryInterface pResult->Release(); else { delete pImpl; return E_UNEXPECTED; } return S_OK; } //F------------------------------------------------------------------------- // Function: DllCanUnloadNow // Summary: Indicates whether it is possible to unload DLL // Arguments: void // Returns: S_OK // DLL can be unloaded now // S_FALSE // DLL must remain loaded extern "C" HRESULT STDMETHODCALLTYPE DllCanUnloadNow() { if ( 0 >= g_lInstances ) return S_OK; else return S_FALSE; } //F------------------------------------------------------------------------- // Function: DllRegisterServer // DllUnregisterServer // Summary: Registers and unregisters DLL server // Returns: DllRegisterServer // S_OK // Registration was successful // SELFREG_E_CLASS // Registration was unsuccessful // SELFREG_E_TYPELIB // (not implemented) // E_OUTOFMEMORY // (not implemented) // E_UNEXPECTED // (not implemented) // DllUnregisterServer // S_OK // Unregistration was successful // S_FALSE // Unregistration was successful, but other // entries still exist for the DLL's classes // SELFREG_E_CLASS // (not implemented) // SELFREG_E_TYPELIB // (not implemented) // E_OUTOFMEMORY // (not implemented) // E_UNEXPECTED // (not implemented) STDAPI DllRegisterServer() { return S_OK; } STDAPI DllUnregisterServer() { return S_OK; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */