/* -*- 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace ::com::sun::star; namespace svt { ShareControlFile::ShareControlFile( const OUString& aOrigURL ) : LockFileCommon(GenerateOwnLockFileURL(aOrigURL, ".~sharing.")) { if ( !m_xStream.is() && !GetURL().isEmpty() ) { uno::Reference< ucb::XCommandEnvironment > xDummyEnv; ::ucbhelper::Content aContent( GetURL(), xDummyEnv, comphelper::getProcessComponentContext() ); uno::Reference< ucb::XContentIdentifier > xContId( aContent.get().is() ? aContent.get()->getIdentifier() : nullptr ); if ( !xContId.is() || xContId->getContentProviderScheme() != "file" ) throw io::IOException(); // the implementation supports only local files for now uno::Reference< io::XStream > xStream; // Currently the locking of the original document is intended to be used. // That means that the shared file should be accessed only when the original document is locked and only by user who has locked the document. // TODO/LATER: should the own file locking be used? try { xStream = aContent.openWriteableStreamNoLock(); } catch ( ucb::InteractiveIOException const & e ) { if ( e.Code == ucb::IOErrorCode_NOT_EXISTING ) { // Create file... SvMemoryStream aStream(0,0); uno::Reference< io::XInputStream > xInput( new ::utl::OInputStreamWrapper( aStream ) ); ucb::InsertCommandArgument aInsertArg; aInsertArg.Data = xInput; aInsertArg.ReplaceExisting = false; aContent.executeCommand( "insert", uno::makeAny( aInsertArg ) ); // try to let the file be hidden if possible try { aContent.setPropertyValue("IsHidden", uno::makeAny( true ) ); } catch( uno::Exception& ) {} // Try to open one more time xStream = aContent.openWriteableStreamNoLock(); } else throw; } m_xSeekable.set( xStream, uno::UNO_QUERY_THROW ); m_xInputStream.set( xStream->getInputStream(), uno::UNO_SET_THROW ); m_xOutputStream.set( xStream->getOutputStream(), uno::UNO_SET_THROW ); m_xTruncate.set( m_xOutputStream, uno::UNO_QUERY_THROW ); m_xStream = xStream; } if ( !IsValid() ) throw io::NotConnectedException(); } ShareControlFile::~ShareControlFile() { try { Close(); } catch( uno::Exception& ) {} } void ShareControlFile::Close() { // if it is called outside of destructor the mutex must be locked if ( !m_xStream.is() ) return; try { if ( m_xInputStream.is() ) m_xInputStream->closeInput(); if ( m_xOutputStream.is() ) m_xOutputStream->closeOutput(); } catch( uno::Exception& ) {} m_xStream.clear(); m_xInputStream.clear(); m_xOutputStream.clear(); m_xSeekable.clear(); m_xTruncate.clear(); m_aUsersData.clear(); } std::vector< o3tl::enumarray< LockFileComponent, OUString > > ShareControlFile::GetUsersData() { ::osl::MutexGuard aGuard( m_aMutex ); if ( !IsValid() ) throw io::NotConnectedException(); if ( m_aUsersData.empty() ) { sal_Int64 nLength = m_xSeekable->getLength(); if ( nLength > SAL_MAX_INT32 ) throw uno::RuntimeException(); uno::Sequence< sal_Int8 > aBuffer( static_cast(nLength) ); m_xSeekable->seek( 0 ); sal_Int32 nRead = m_xInputStream->readBytes( aBuffer, static_cast(nLength) ); nLength -= nRead; while ( nLength > 0 ) { uno::Sequence< sal_Int8 > aTmpBuf( static_cast(nLength) ); nRead = m_xInputStream->readBytes( aTmpBuf, static_cast(nLength) ); if ( nRead > nLength ) throw uno::RuntimeException(); for ( sal_Int32 nInd = 0; nInd < nRead; nInd++ ) aBuffer[aBuffer.getLength() - static_cast(nLength) + nInd] = aTmpBuf[nInd]; nLength -= nRead; } ParseList( aBuffer, m_aUsersData ); } return m_aUsersData; } void ShareControlFile::SetUsersDataAndStore( const std::vector< LockFileEntry >& aUsersData ) { ::osl::MutexGuard aGuard( m_aMutex ); if ( !IsValid() ) throw io::NotConnectedException(); if ( !m_xTruncate.is() || !m_xOutputStream.is() || !m_xSeekable.is() ) throw uno::RuntimeException(); m_xTruncate->truncate(); m_xSeekable->seek( 0 ); OUStringBuffer aBuffer; for (const auto & rData : aUsersData) { for ( LockFileComponent nEntryInd : o3tl::enumrange() ) { aBuffer.append( EscapeCharacters( rData[nEntryInd] ) ); if ( nEntryInd < LockFileComponent::LAST ) aBuffer.append( ',' ); else aBuffer.append( ';' ); } } OString aStringData( OUStringToOString( aBuffer.makeStringAndClear(), RTL_TEXTENCODING_UTF8 ) ); uno::Sequence< sal_Int8 > aData( reinterpret_cast(aStringData.getStr()), aStringData.getLength() ); m_xOutputStream->writeBytes( aData ); m_aUsersData = aUsersData; } LockFileEntry ShareControlFile::InsertOwnEntry() { ::osl::MutexGuard aGuard( m_aMutex ); if ( !IsValid() ) throw io::NotConnectedException(); GetUsersData(); std::vector< LockFileEntry > aNewData( m_aUsersData ); LockFileEntry aNewEntry = GenerateOwnEntry(); bool bExists = false; sal_Int32 nNewInd = 0; for (LockFileEntry & rEntry : m_aUsersData) { if ( rEntry[LockFileComponent::LOCALHOST] == aNewEntry[LockFileComponent::LOCALHOST] && rEntry[LockFileComponent::SYSUSERNAME] == aNewEntry[LockFileComponent::SYSUSERNAME] && rEntry[LockFileComponent::USERURL] == aNewEntry[LockFileComponent::USERURL] ) { if ( !bExists ) { aNewData[nNewInd] = aNewEntry; bExists = true; } } else { aNewData[nNewInd] = rEntry; } nNewInd++; } if ( !bExists ) aNewData.push_back( aNewEntry ); SetUsersDataAndStore( aNewData ); return aNewEntry; } bool ShareControlFile::HasOwnEntry() { ::osl::MutexGuard aGuard( m_aMutex ); if ( !IsValid() ) { throw io::NotConnectedException(); } GetUsersData(); LockFileEntry aEntry = GenerateOwnEntry(); for (LockFileEntry & rEntry : m_aUsersData) { if ( rEntry[LockFileComponent::LOCALHOST] == aEntry[LockFileComponent::LOCALHOST] && rEntry[LockFileComponent::SYSUSERNAME] == aEntry[LockFileComponent::SYSUSERNAME] && rEntry[LockFileComponent::USERURL] == aEntry[LockFileComponent::USERURL] ) { return true; } } return false; } void ShareControlFile::RemoveEntry() { RemoveEntry(GenerateOwnEntry()); } void ShareControlFile::RemoveEntry( const LockFileEntry& aEntry ) { ::osl::MutexGuard aGuard( m_aMutex ); if ( !IsValid() ) throw io::NotConnectedException(); GetUsersData(); std::vector< LockFileEntry > aNewData; for (LockFileEntry & rEntry : m_aUsersData) { if ( rEntry[LockFileComponent::LOCALHOST] != aEntry[LockFileComponent::LOCALHOST] || rEntry[LockFileComponent::SYSUSERNAME] != aEntry[LockFileComponent::SYSUSERNAME] || rEntry[LockFileComponent::USERURL] != aEntry[LockFileComponent::USERURL] ) { aNewData.push_back( rEntry ); } } SetUsersDataAndStore( aNewData ); if ( aNewData.empty() ) { // try to remove the file if it is empty RemoveFile(); } } void ShareControlFile::RemoveFile() { ::osl::MutexGuard aGuard( m_aMutex ); if ( !IsValid() ) throw io::NotConnectedException(); Close(); uno::Reference xSimpleFileAccess(ucb::SimpleFileAccess::create(comphelper::getProcessComponentContext())); xSimpleFileAccess->kill( GetURL() ); } } // namespace svt /* vim:set shiftwidth=4 softtabstop=4 expandtab: */