67478f9d63
See tdf#42949 for motivation Change-Id: I758bb27e93779e3df21c463714e49354748f446f Reviewed-on: https://gerrit.libreoffice.org/c/core/+/128715 Tested-by: Jenkins Reviewed-by: Thorsten Behrens <thorsten.behrens@allotropia.de>
349 lines
10 KiB
C++
349 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "acceptor.hxx"
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#include <unordered_set>
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#include <mutex>
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#include <rtl/ref.hxx>
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#include <com/sun/star/connection/XConnection.hpp>
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#include <com/sun/star/connection/XConnectionBroadcaster.hpp>
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#include <com/sun/star/connection/ConnectionSetupException.hpp>
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#include <com/sun/star/io/IOException.hpp>
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#include <cppuhelper/implbase.hxx>
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using namespace ::osl;
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using namespace ::cppu;
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star::io;
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using namespace ::com::sun::star::connection;
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namespace io_acceptor {
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typedef std::unordered_set< css::uno::Reference< css::io::XStreamListener> >
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XStreamListener_hash_set;
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namespace {
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class SocketConnection : public ::cppu::WeakImplHelper<
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css::connection::XConnection,
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css::connection::XConnectionBroadcaster>
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{
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public:
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explicit SocketConnection( const OUString & sConnectionDescription );
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virtual sal_Int32 SAL_CALL read( css::uno::Sequence< sal_Int8 >& aReadBytes,
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sal_Int32 nBytesToRead ) override;
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virtual void SAL_CALL write( const css::uno::Sequence< sal_Int8 >& aData ) override;
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virtual void SAL_CALL flush( ) override;
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virtual void SAL_CALL close( ) override;
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virtual OUString SAL_CALL getDescription( ) override;
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// XConnectionBroadcaster
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virtual void SAL_CALL addStreamListener(const css::uno::Reference< css::io::XStreamListener>& aListener) override;
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virtual void SAL_CALL removeStreamListener(const css::uno::Reference< css::io::XStreamListener>& aListener) override;
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public:
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void completeConnectionString();
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::osl::StreamSocket m_socket;
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oslInterlockedCount m_nStatus;
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OUString m_sDescription;
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std::mutex _mutex;
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bool _started;
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bool _closed;
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bool _error;
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XStreamListener_hash_set _listeners;
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};
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}
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template<class T>
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static void notifyListeners(SocketConnection * pCon, bool * notified, T t)
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{
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XStreamListener_hash_set listeners;
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{
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std::unique_lock guard(pCon->_mutex);
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if(!*notified)
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{
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*notified = true;
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listeners = pCon->_listeners;
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}
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}
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for(auto& listener : listeners)
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t(listener);
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}
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static void callStarted(const Reference<XStreamListener>& xStreamListener)
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{
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xStreamListener->started();
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}
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namespace {
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struct callError {
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const Any & any;
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explicit callError(const Any & any);
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void operator () (const Reference<XStreamListener>& xStreamListener);
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};
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}
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callError::callError(const Any & aAny)
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: any(aAny)
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{
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}
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void callError::operator () (const Reference<XStreamListener>& xStreamListener)
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{
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xStreamListener->error(any);
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}
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static void callClosed(const Reference<XStreamListener>& xStreamListener)
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{
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xStreamListener->closed();
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}
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SocketConnection::SocketConnection( const OUString &sConnectionDescription) :
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m_nStatus( 0 ),
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m_sDescription( sConnectionDescription ),
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_started(false),
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_closed(false),
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_error(false)
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{
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// make it unique
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m_sDescription += ",uniqueValue=" ;
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m_sDescription += OUString::number(
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sal::static_int_cast< sal_Int64 >(
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reinterpret_cast< sal_IntPtr >(&m_socket)) );
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}
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void SocketConnection::completeConnectionString()
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{
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m_sDescription +=
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",peerPort=" + OUString::number(m_socket.getPeerPort()) +
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",peerHost=" + m_socket.getPeerHost( ) +
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",localPort=" + OUString::number( m_socket.getLocalPort() ) +
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",localHost=" + m_socket.getLocalHost();
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}
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sal_Int32 SocketConnection::read( Sequence < sal_Int8 > & aReadBytes , sal_Int32 nBytesToRead )
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{
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if( ! m_nStatus )
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{
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notifyListeners(this, &_started, callStarted);
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if( aReadBytes.getLength() != nBytesToRead )
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{
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aReadBytes.realloc( nBytesToRead );
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}
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sal_Int32 i = m_socket.read(
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aReadBytes.getArray(), aReadBytes.getLength());
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if(i != nBytesToRead)
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{
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OUString message = "acc_socket.cxx:SocketConnection::read: error - " +
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m_socket.getErrorAsString();
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IOException ioException(message, static_cast<XConnection *>(this));
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Any any;
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any <<= ioException;
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notifyListeners(this, &_error, callError(any));
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throw ioException;
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}
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return i;
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}
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else
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{
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IOException ioException("acc_socket.cxx:SocketConnection::read: error - connection already closed", static_cast<XConnection *>(this));
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Any any;
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any <<= ioException;
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notifyListeners(this, &_error, callError(any));
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throw ioException;
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}
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}
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void SocketConnection::write( const Sequence < sal_Int8 > &seq )
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{
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if( ! m_nStatus )
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{
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if( m_socket.write( seq.getConstArray() , seq.getLength() ) != seq.getLength() )
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{
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OUString message = "acc_socket.cxx:SocketConnection::write: error - " +
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m_socket.getErrorAsString();
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IOException ioException(message, static_cast<XConnection *>(this));
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Any any;
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any <<= ioException;
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notifyListeners(this, &_error, callError(any));
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throw ioException;
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}
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}
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else
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{
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IOException ioException("acc_socket.cxx:SocketConnection::write: error - connection already closed", static_cast<XConnection *>(this));
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Any any;
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any <<= ioException;
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notifyListeners(this, &_error, callError(any));
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throw ioException;
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}
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}
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void SocketConnection::flush( )
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{
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}
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void SocketConnection::close()
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{
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// ensure close is called only once
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if( 1 == osl_atomic_increment( (&m_nStatus) ) )
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{
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m_socket.shutdown();
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notifyListeners(this, &_closed, callClosed);
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}
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}
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OUString SocketConnection::getDescription()
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{
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return m_sDescription;
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}
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// XConnectionBroadcaster
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void SAL_CALL SocketConnection::addStreamListener(const Reference<XStreamListener> & aListener)
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{
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std::unique_lock guard(_mutex);
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_listeners.insert(aListener);
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}
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void SAL_CALL SocketConnection::removeStreamListener(const Reference<XStreamListener> & aListener)
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{
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std::unique_lock guard(_mutex);
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_listeners.erase(aListener);
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}
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SocketAcceptor::SocketAcceptor( const OUString &sSocketName,
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sal_uInt16 nPort,
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bool bTcpNoDelay,
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const OUString &sConnectionDescription) :
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m_sSocketName( sSocketName ),
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m_sConnectionDescription( sConnectionDescription ),
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m_nPort( nPort ),
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m_bTcpNoDelay( bTcpNoDelay ),
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m_bClosed( false )
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{
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}
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void SocketAcceptor::init()
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{
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if( ! m_addr.setPort( m_nPort ) )
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{
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throw ConnectionSetupException(
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"acc_socket.cxx:SocketAcceptor::init - error - invalid tcp/ip port " +
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OUString::number( m_nPort ));
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}
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if( ! m_addr.setHostname( m_sSocketName.pData ) )
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{
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throw ConnectionSetupException(
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"acc_socket.cxx:SocketAcceptor::init - error - invalid host " + m_sSocketName );
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}
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m_socket.setOption( osl_Socket_OptionReuseAddr, 1);
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if(! m_socket.bind(m_addr) )
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{
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throw ConnectionSetupException(
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"acc_socket.cxx:SocketAcceptor::init - error - couldn't bind on " +
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m_sSocketName + ":" + OUString::number(m_nPort));
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}
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if(! m_socket.listen() )
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{
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throw ConnectionSetupException(
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"acc_socket.cxx:SocketAcceptor::init - error - can't listen on " +
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m_sSocketName + ":" + OUString::number(m_nPort) );
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}
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}
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Reference< XConnection > SocketAcceptor::accept( )
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{
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rtl::Reference<SocketConnection> pConn(new SocketConnection( m_sConnectionDescription ));
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if( m_socket.acceptConnection( pConn->m_socket )!= osl_Socket_Ok )
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{
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// stopAccepting was called
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return Reference < XConnection > ();
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}
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if( m_bClosed )
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{
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return Reference < XConnection > ();
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}
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pConn->completeConnectionString();
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::osl::SocketAddr remoteAddr;
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pConn->m_socket.getPeerAddr(remoteAddr);
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OUString remoteHostname = remoteAddr.getHostname();
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// we enable tcpNoDelay for loopback connections because
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// it can make a significant speed difference on linux boxes.
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if( m_bTcpNoDelay || remoteHostname == "localhost" ||
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remoteHostname.startsWith("127.0.0.") )
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{
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sal_Int32 nTcpNoDelay = sal_Int32(true);
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pConn->m_socket.setOption( osl_Socket_OptionTcpNoDelay , &nTcpNoDelay,
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sizeof( nTcpNoDelay ) , osl_Socket_LevelTcp );
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}
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return pConn;
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}
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void SocketAcceptor::stopAccepting()
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{
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m_bClosed = true;
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m_socket.close();
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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