755 lines
14 KiB
C++
755 lines
14 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2002 Chris Schoeneman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "CClient.h"
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#include "CServerProxy.h"
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#include "ISecondaryScreenFactory.h"
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#include "CClipboard.h"
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#include "CInputPacketStream.h"
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#include "COutputPacketStream.h"
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#include "CProtocolUtil.h"
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#include "CSecondaryScreen.h"
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#include "IServer.h"
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#include "ProtocolTypes.h"
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#include "XScreen.h"
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#include "XSynergy.h"
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#include "IDataSocket.h"
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#include "ISocketFactory.h"
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#include "XSocket.h"
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#include "IStreamFilterFactory.h"
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#include "CLock.h"
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#include "CThread.h"
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#include "CTimerThread.h"
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#include "XMT.h"
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#include "XThread.h"
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#include "CLog.h"
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#include "CStopwatch.h"
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#include "TMethodJob.h"
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#include "CArch.h"
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//
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// CClient
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//
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CClient::CClient(const CString& clientName) :
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m_name(clientName),
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m_screen(NULL),
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m_server(NULL),
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m_screenFactory(NULL),
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m_socketFactory(NULL),
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m_streamFilterFactory(NULL),
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m_session(NULL),
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m_active(false),
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m_rejected(true),
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m_status(kNotRunning)
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{
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// do nothing
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}
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CClient::~CClient()
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{
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delete m_screenFactory;
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delete m_socketFactory;
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delete m_streamFilterFactory;
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}
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void
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CClient::setAddress(const CNetworkAddress& serverAddress)
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{
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CLock lock(&m_mutex);
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m_serverAddress = serverAddress;
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}
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void
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CClient::setScreenFactory(ISecondaryScreenFactory* adopted)
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{
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CLock lock(&m_mutex);
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delete m_screenFactory;
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m_screenFactory = adopted;
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}
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void
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CClient::setSocketFactory(ISocketFactory* adopted)
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{
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CLock lock(&m_mutex);
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delete m_socketFactory;
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m_socketFactory = adopted;
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}
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void
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CClient::setStreamFilterFactory(IStreamFilterFactory* adopted)
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{
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CLock lock(&m_mutex);
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delete m_streamFilterFactory;
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m_streamFilterFactory = adopted;
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}
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void
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CClient::exitMainLoop()
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{
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m_screen->exitMainLoop();
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}
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void
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CClient::addStatusJob(IJob* job)
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{
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m_statusJobs.addJob(job);
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}
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void
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CClient::removeStatusJob(IJob* job)
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{
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m_statusJobs.removeJob(job);
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}
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bool
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CClient::wasRejected() const
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{
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return m_rejected;
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}
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CClient::EStatus
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CClient::getStatus(CString* msg) const
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{
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CLock lock(&m_mutex);
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if (msg != NULL) {
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*msg = m_statusMessage;
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}
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return m_status;
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}
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void
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CClient::runStatusJobs() const
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{
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m_statusJobs.runJobs();
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}
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void
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CClient::setStatus(EStatus status, const char* msg)
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{
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{
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CLock lock(&m_mutex);
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m_status = status;
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if (m_status == kError) {
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m_statusMessage = (msg == NULL) ? "Error" : msg;
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}
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else {
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m_statusMessage = (msg == NULL) ? "" : msg;
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}
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}
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runStatusJobs();
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}
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void
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CClient::onError()
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{
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setStatus(kError);
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// close down session but don't wait too long
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deleteSession(3.0);
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}
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void
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CClient::onInfoChanged(const CClientInfo& info)
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{
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LOG((CLOG_DEBUG "resolution changed"));
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CLock lock(&m_mutex);
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if (m_server != NULL) {
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m_server->onInfoChanged(info);
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}
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}
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bool
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CClient::onGrabClipboard(ClipboardID id)
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{
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CLock lock(&m_mutex);
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if (m_server == NULL) {
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// m_server can be NULL if the screen calls this method
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// before we've gotten around to connecting to the server.
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// we simply ignore the clipboard change in that case.
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return false;
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}
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// grab ownership
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m_server->onGrabClipboard(id);
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// we now own the clipboard and it has not been sent to the server
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m_ownClipboard[id] = true;
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m_timeClipboard[id] = 0;
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// if we're not the active screen then send the clipboard now,
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// otherwise we'll wait until we leave.
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if (!m_active) {
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sendClipboard(id);
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}
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return true;
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}
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void
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CClient::onClipboardChanged(ClipboardID, const CString&)
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{
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// ignore -- we'll check the clipboard when we leave
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}
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void
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CClient::open()
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{
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// open the screen
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try {
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LOG((CLOG_DEBUG "opening screen"));
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openSecondaryScreen();
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setStatus(kNotRunning);
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}
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catch (XScreenOpenFailure& e) {
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// can't open screen
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setStatus(kError, e.what());
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LOG((CLOG_DEBUG "failed to open screen"));
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throw;
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}
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}
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void
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CClient::mainLoop()
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{
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{
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CLock lock(&m_mutex);
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// check preconditions
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assert(m_screen != NULL);
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assert(m_server == NULL);
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// connection starts as unsuccessful
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m_rejected = true;
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}
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try {
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setStatus(kNotRunning);
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LOG((CLOG_DEBUG "starting client \"%s\"", m_name.c_str()));
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// start server interactions
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{
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CLock lock(&m_mutex);
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m_session = new CThread(new TMethodJob<CClient>(
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this, &CClient::runSession));
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}
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// handle events
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m_screen->mainLoop();
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// clean up
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deleteSession();
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LOG((CLOG_DEBUG "stopping client \"%s\"", m_name.c_str()));
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}
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catch (XMT& e) {
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LOG((CLOG_ERR "client error: %s", e.what()));
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setStatus(kError, e.what());
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// clean up
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deleteSession();
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LOG((CLOG_DEBUG "stopping client \"%s\"", m_name.c_str()));
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throw;
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}
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catch (XBase& e) {
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LOG((CLOG_ERR "client error: %s", e.what()));
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setStatus(kError, e.what());
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// clean up
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deleteSession();
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LOG((CLOG_DEBUG "stopping client \"%s\"", m_name.c_str()));
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CLock lock(&m_mutex);
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m_rejected = false;
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}
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catch (XThread&) {
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setStatus(kNotRunning);
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// clean up
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deleteSession();
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LOG((CLOG_DEBUG "stopping client \"%s\"", m_name.c_str()));
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throw;
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}
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catch (...) {
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LOG((CLOG_ERR "client error: <unknown error>"));
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setStatus(kError);
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// clean up
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deleteSession();
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LOG((CLOG_DEBUG "stopping client \"%s\"", m_name.c_str()));
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throw;
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}
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}
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void
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CClient::close()
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{
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closeSecondaryScreen();
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LOG((CLOG_DEBUG "closed screen"));
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}
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void
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CClient::enter(SInt32 xAbs, SInt32 yAbs, UInt32, KeyModifierMask mask, bool)
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{
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{
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CLock lock(&m_mutex);
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m_active = true;
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}
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m_screen->enter(xAbs, yAbs, mask);
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}
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bool
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CClient::leave()
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{
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m_screen->leave();
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CLock lock(&m_mutex);
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m_active = false;
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// send clipboards that we own and that have changed
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for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
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if (m_ownClipboard[id]) {
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sendClipboard(id);
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}
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}
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return true;
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}
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void
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CClient::setClipboard(ClipboardID id, const CString& data)
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{
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// unmarshall
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CClipboard clipboard;
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clipboard.unmarshall(data, 0);
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// set screen's clipboard
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m_screen->setClipboard(id, &clipboard);
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}
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void
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CClient::grabClipboard(ClipboardID id)
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{
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// we no longer own the clipboard
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{
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CLock lock(&m_mutex);
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m_ownClipboard[id] = false;
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}
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m_screen->grabClipboard(id);
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}
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void
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CClient::setClipboardDirty(ClipboardID, bool)
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{
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assert(0 && "shouldn't be called");
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}
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void
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CClient::keyDown(KeyID id, KeyModifierMask mask, KeyButton button)
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{
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m_screen->keyDown(id, mask, button);
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}
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void
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CClient::keyRepeat(KeyID id, KeyModifierMask mask,
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SInt32 count, KeyButton button)
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{
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m_screen->keyRepeat(id, mask, count, button);
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}
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void
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CClient::keyUp(KeyID id, KeyModifierMask mask, KeyButton button)
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{
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m_screen->keyUp(id, mask, button);
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}
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void
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CClient::mouseDown(ButtonID id)
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{
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m_screen->mouseDown(id);
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}
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void
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CClient::mouseUp(ButtonID id)
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{
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m_screen->mouseUp(id);
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}
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void
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CClient::mouseMove(SInt32 x, SInt32 y)
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{
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m_screen->mouseMove(x, y);
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}
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void
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CClient::mouseWheel(SInt32 delta)
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{
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m_screen->mouseWheel(delta);
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}
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void
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CClient::screensaver(bool activate)
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{
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m_screen->screensaver(activate);
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}
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void
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CClient::resetOptions()
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{
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m_screen->resetOptions();
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}
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void
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CClient::setOptions(const COptionsList& options)
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{
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m_screen->setOptions(options);
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}
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CString
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CClient::getName() const
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{
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return m_name;
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}
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SInt32
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CClient::getJumpZoneSize() const
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{
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return m_screen->getJumpZoneSize();
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}
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void
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CClient::getShape(SInt32& x, SInt32& y, SInt32& w, SInt32& h) const
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{
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m_screen->getShape(x, y, w, h);
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}
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void
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CClient::getCursorPos(SInt32& x, SInt32& y) const
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{
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m_screen->getCursorPos(x, y);
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}
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void
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CClient::getCursorCenter(SInt32&, SInt32&) const
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{
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assert(0 && "shouldn't be called");
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}
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void
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CClient::openSecondaryScreen()
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{
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assert(m_screen == NULL);
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// not active
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m_active = false;
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// reset clipboard state
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for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
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m_ownClipboard[id] = false;
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m_timeClipboard[id] = 0;
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}
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// create screen
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LOG((CLOG_DEBUG1 "creating secondary screen"));
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if (m_screenFactory != NULL) {
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m_screen = m_screenFactory->create(this);
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}
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if (m_screen == NULL) {
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throw XScreenOpenFailure();
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}
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// open screen
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try {
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LOG((CLOG_DEBUG1 "opening secondary screen"));
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m_screen->open();
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}
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catch (...) {
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LOG((CLOG_DEBUG1 "destroying secondary screen"));
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delete m_screen;
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m_screen = NULL;
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throw;
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}
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}
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void
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CClient::closeSecondaryScreen()
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{
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// close the secondary screen
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try {
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if (m_screen != NULL) {
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LOG((CLOG_DEBUG1 "closing secondary screen"));
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m_screen->close();
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}
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}
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catch (...) {
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// ignore
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}
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// clean up
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LOG((CLOG_DEBUG1 "destroying secondary screen"));
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delete m_screen;
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m_screen = NULL;
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}
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void
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CClient::sendClipboard(ClipboardID id)
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{
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// note -- m_mutex must be locked on entry
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assert(m_screen != NULL);
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assert(m_server != NULL);
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// get clipboard data. set the clipboard time to the last
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// clipboard time before getting the data from the screen
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// as the screen may detect an unchanged clipboard and
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// avoid copying the data.
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CClipboard clipboard;
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if (clipboard.open(m_timeClipboard[id])) {
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clipboard.close();
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}
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m_screen->getClipboard(id, &clipboard);
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// check time
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if (m_timeClipboard[id] == 0 ||
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clipboard.getTime() != m_timeClipboard[id]) {
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// save new time
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m_timeClipboard[id] = clipboard.getTime();
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// marshall the data
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CString data = clipboard.marshall();
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// save and send data if different
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if (data != m_dataClipboard[id]) {
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m_dataClipboard[id] = data;
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m_server->onClipboardChanged(id, data);
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}
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}
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}
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void
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CClient::runSession(void*)
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{
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try {
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LOG((CLOG_DEBUG "starting server proxy"));
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runServer();
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m_screen->exitMainLoop();
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LOG((CLOG_DEBUG "stopping server proxy"));
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}
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catch (...) {
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m_screen->exitMainLoop();
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LOG((CLOG_DEBUG "stopping server proxy"));
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throw;
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}
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}
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void
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CClient::deleteSession(double timeout)
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{
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// get session thread object
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CThread* thread;
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{
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CLock lock(&m_mutex);
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thread = m_session;
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m_session = NULL;
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}
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// shut it down
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if (thread != NULL) {
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thread->cancel();
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thread->wait(timeout);
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delete thread;
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}
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}
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void
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CClient::runServer()
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{
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IDataSocket* socket = NULL;
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CServerProxy* proxy = NULL;
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bool timedOut;
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try {
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// allow connect and handshake this much time to succeed
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CTimerThread timer(15.0, &timedOut);
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// create socket and attempt to connect to server
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LOG((CLOG_DEBUG1 "connecting to server"));
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if (m_socketFactory != NULL) {
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socket = m_socketFactory->create();
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}
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assert(socket != NULL);
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socket->connect(m_serverAddress);
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// create proxy
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LOG((CLOG_INFO "connected to server"));
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LOG((CLOG_DEBUG1 "negotiating with server"));
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proxy = handshakeServer(socket);
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}
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catch (XThread&) {
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if (timedOut) {
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LOG((CLOG_ERR "connection timed out"));
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setStatus(kError, "connection timed out");
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}
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else {
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// cancelled by some thread other than the timer
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}
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delete proxy;
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delete socket;
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throw;
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}
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catch (XSocketConnect& e) {
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LOG((CLOG_ERR "connection failed: %s", e.what()));
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setStatus(kError, e.what());
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delete socket;
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return;
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}
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catch (XBase& e) {
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LOG((CLOG_ERR "connection failed: %s", e.what()));
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setStatus(kError, e.what());
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LOG((CLOG_INFO "disconnecting from server"));
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delete socket;
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return;
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}
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catch (...) {
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LOG((CLOG_ERR "connection failed: <unknown error>"));
|
|
setStatus(kError);
|
|
LOG((CLOG_INFO "disconnecting from server"));
|
|
delete socket;
|
|
return;
|
|
}
|
|
|
|
// saver server proxy object
|
|
{
|
|
CLock lock(&m_mutex);
|
|
m_server = proxy;
|
|
}
|
|
|
|
try {
|
|
// prepare for remote control
|
|
m_screen->remoteControl();
|
|
|
|
// process messages
|
|
bool rejected = true;
|
|
if (proxy != NULL) {
|
|
LOG((CLOG_DEBUG1 "communicating with server"));
|
|
setStatus(kRunning);
|
|
rejected = !proxy->mainLoop();
|
|
setStatus(kNotRunning);
|
|
}
|
|
|
|
// prepare for local control
|
|
m_screen->localControl();
|
|
|
|
// clean up
|
|
CLock lock(&m_mutex);
|
|
m_rejected = rejected;
|
|
m_server = NULL;
|
|
delete proxy;
|
|
LOG((CLOG_DEBUG "disconnecting from server"));
|
|
socket->close();
|
|
delete socket;
|
|
}
|
|
catch (...) {
|
|
setStatus(kNotRunning);
|
|
m_screen->localControl();
|
|
CLock lock(&m_mutex);
|
|
m_rejected = false;
|
|
m_server = NULL;
|
|
delete proxy;
|
|
LOG((CLOG_DEBUG "disconnecting from server"));
|
|
socket->close();
|
|
delete socket;
|
|
throw;
|
|
}
|
|
}
|
|
|
|
CServerProxy*
|
|
CClient::handshakeServer(IDataSocket* socket)
|
|
{
|
|
// get the input and output streams
|
|
IInputStream* input = socket->getInputStream();
|
|
IOutputStream* output = socket->getOutputStream();
|
|
bool own = false;
|
|
|
|
// attach filters
|
|
if (m_streamFilterFactory != NULL) {
|
|
input = m_streamFilterFactory->createInput(input, own);
|
|
output = m_streamFilterFactory->createOutput(output, own);
|
|
own = true;
|
|
}
|
|
|
|
// attach the packetizing filters
|
|
input = new CInputPacketStream(input, own);
|
|
output = new COutputPacketStream(output, own);
|
|
own = true;
|
|
|
|
CServerProxy* proxy = NULL;
|
|
try {
|
|
// wait for hello from server
|
|
LOG((CLOG_DEBUG1 "wait for hello"));
|
|
SInt16 major, minor;
|
|
CProtocolUtil::readf(input, kMsgHello, &major, &minor);
|
|
|
|
// check versions
|
|
LOG((CLOG_DEBUG1 "got hello version %d.%d", major, minor));
|
|
if (major < kProtocolMajorVersion ||
|
|
(major == kProtocolMajorVersion && minor < kProtocolMinorVersion)) {
|
|
throw XIncompatibleClient(major, minor);
|
|
}
|
|
|
|
// say hello back
|
|
LOG((CLOG_DEBUG1 "say hello version %d.%d", kProtocolMajorVersion, kProtocolMinorVersion));
|
|
CProtocolUtil::writef(output, kMsgHelloBack,
|
|
kProtocolMajorVersion,
|
|
kProtocolMinorVersion, &m_name);
|
|
|
|
// create server proxy
|
|
proxy = new CServerProxy(this, input, output);
|
|
|
|
// negotiate
|
|
// FIXME
|
|
|
|
return proxy;
|
|
}
|
|
catch (XIncompatibleClient& e) {
|
|
LOG((CLOG_ERR "server has incompatible version %d.%d", e.getMajor(), e.getMinor()));
|
|
setStatus(kError, e.what());
|
|
}
|
|
catch (XBase& e) {
|
|
LOG((CLOG_WARN "error communicating with server: %s", e.what()));
|
|
setStatus(kError, e.what());
|
|
}
|
|
catch (...) {
|
|
// probably timed out
|
|
if (proxy != NULL) {
|
|
delete proxy;
|
|
}
|
|
else if (own) {
|
|
delete input;
|
|
delete output;
|
|
}
|
|
throw;
|
|
}
|
|
|
|
// failed
|
|
if (proxy != NULL) {
|
|
delete proxy;
|
|
}
|
|
else if (own) {
|
|
delete input;
|
|
delete output;
|
|
}
|
|
|
|
return NULL;
|
|
}
|