mirror of
https://github.com/debauchee/barrier.git
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463 lines
12 KiB
C++
463 lines
12 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 "CClientProxy1_0.h"
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#include "CProtocolUtil.h"
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#include "XSynergy.h"
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#include "IStream.h"
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#include "CLog.h"
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#include "IEventQueue.h"
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#include "TMethodEventJob.h"
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#include <cstring>
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//
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// CClientProxy1_0
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//
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CClientProxy1_0::CClientProxy1_0(const CString& name, IStream* stream) :
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CClientProxy(name, stream),
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m_heartbeatAlarm(kHeartRate * kHeartBeatsUntilDeath),
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m_heartbeatTimer(NULL),
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m_parser(&CClientProxy1_0::parseHandshakeMessage)
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{
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// install event handlers
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EVENTQUEUE->adoptHandler(IStream::getInputReadyEvent(),
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stream->getEventTarget(),
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new TMethodEventJob<CClientProxy1_0>(this,
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&CClientProxy1_0::handleData, NULL));
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EVENTQUEUE->adoptHandler(IStream::getOutputErrorEvent(),
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stream->getEventTarget(),
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new TMethodEventJob<CClientProxy1_0>(this,
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&CClientProxy1_0::handleWriteError, NULL));
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EVENTQUEUE->adoptHandler(IStream::getInputShutdownEvent(),
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stream->getEventTarget(),
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new TMethodEventJob<CClientProxy1_0>(this,
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&CClientProxy1_0::handleDisconnect, NULL));
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EVENTQUEUE->adoptHandler(IStream::getOutputShutdownEvent(),
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stream->getEventTarget(),
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new TMethodEventJob<CClientProxy1_0>(this,
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&CClientProxy1_0::handleWriteError, NULL));
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EVENTQUEUE->adoptHandler(CEvent::kTimer, this,
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new TMethodEventJob<CClientProxy1_0>(this,
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&CClientProxy1_0::handleFlatline, NULL));
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LOG((CLOG_DEBUG1 "querying client \"%s\" info", getName().c_str()));
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CProtocolUtil::writef(getStream(), kMsgQInfo);
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}
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CClientProxy1_0::~CClientProxy1_0()
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{
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removeHandlers();
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}
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void
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CClientProxy1_0::disconnect()
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{
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removeHandlers();
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getStream()->close();
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EVENTQUEUE->addEvent(CEvent(getDisconnectedEvent(), getEventTarget()));
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}
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void
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CClientProxy1_0::removeHandlers()
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{
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// uninstall event handlers
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EVENTQUEUE->removeHandler(IStream::getInputReadyEvent(),
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getStream()->getEventTarget());
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EVENTQUEUE->removeHandler(IStream::getOutputErrorEvent(),
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getStream()->getEventTarget());
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EVENTQUEUE->removeHandler(IStream::getInputShutdownEvent(),
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getStream()->getEventTarget());
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EVENTQUEUE->removeHandler(IStream::getOutputShutdownEvent(),
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getStream()->getEventTarget());
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EVENTQUEUE->removeHandler(CEvent::kTimer, this);
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// remove timer
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removeHeartbeatTimer();
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}
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void
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CClientProxy1_0::addHeartbeatTimer()
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{
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if (m_heartbeatAlarm > 0.0) {
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m_heartbeatTimer = EVENTQUEUE->newOneShotTimer(m_heartbeatAlarm, this);
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}
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}
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void
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CClientProxy1_0::removeHeartbeatTimer()
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{
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if (m_heartbeatTimer != NULL) {
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EVENTQUEUE->deleteTimer(m_heartbeatTimer);
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m_heartbeatTimer = NULL;
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}
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}
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void
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CClientProxy1_0::handleData(const CEvent&, void*)
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{
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// handle messages until there are no more. first read message code.
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UInt8 code[4];
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UInt32 n = getStream()->read(code, 4);
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while (n != 0) {
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// verify we got an entire code
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if (n != 4) {
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LOG((CLOG_ERR "incomplete message from \"%s\": %d bytes", getName().c_str(), n));
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disconnect();
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return;
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}
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// parse message
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LOG((CLOG_DEBUG2 "msg from \"%s\": %c%c%c%c", getName().c_str(), code[0], code[1], code[2], code[3]));
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if (!(this->*m_parser)(code)) {
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LOG((CLOG_ERR "invalid message from client \"%s\"", getName().c_str()));
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disconnect();
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return;
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}
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// next message
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n = getStream()->read(code, 4);
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}
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// restart heartbeat timer
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removeHeartbeatTimer();
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addHeartbeatTimer();
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}
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bool
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CClientProxy1_0::parseHandshakeMessage(const UInt8* code)
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{
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if (memcmp(code, kMsgCNoop, 4) == 0) {
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// discard no-ops
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LOG((CLOG_DEBUG2 "no-op from", getName().c_str()));
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return true;
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}
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else if (memcmp(code, kMsgDInfo, 4) == 0) {
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// future messages get parsed by parseMessage
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m_parser = &CClientProxy1_0::parseMessage;
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if (recvInfo()) {
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EVENTQUEUE->addEvent(CEvent(getReadyEvent(), getEventTarget()));
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return true;
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}
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}
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return false;
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}
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bool
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CClientProxy1_0::parseMessage(const UInt8* code)
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{
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if (memcmp(code, kMsgDInfo, 4) == 0) {
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if (recvInfo()) {
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EVENTQUEUE->addEvent(
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CEvent(getShapeChangedEvent(), getEventTarget()));
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return true;
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}
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return false;
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}
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else if (memcmp(code, kMsgCNoop, 4) == 0) {
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// discard no-ops
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LOG((CLOG_DEBUG2 "no-op from", getName().c_str()));
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return true;
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}
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else if (memcmp(code, kMsgCClipboard, 4) == 0) {
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return recvGrabClipboard();
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}
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else if (memcmp(code, kMsgDClipboard, 4) == 0) {
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return recvClipboard();
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}
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return false;
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}
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void
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CClientProxy1_0::handleDisconnect(const CEvent&, void*)
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{
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LOG((CLOG_NOTE "client \"%s\" has disconnected", getName().c_str()));
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disconnect();
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}
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void
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CClientProxy1_0::handleWriteError(const CEvent&, void*)
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{
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LOG((CLOG_WARN "error writing to client \"%s\"", getName().c_str()));
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disconnect();
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}
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void
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CClientProxy1_0::handleFlatline(const CEvent&, void*)
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{
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// didn't get a heartbeat fast enough. assume client is dead.
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LOG((CLOG_NOTE "client \"%s\" is dead", getName().c_str()));
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disconnect();
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}
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bool
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CClientProxy1_0::getClipboard(ClipboardID id, IClipboard* clipboard) const
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{
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CClipboard::copy(clipboard, &m_clipboard[id].m_clipboard);
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return true;
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}
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void
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CClientProxy1_0::getShape(SInt32& x, SInt32& y, SInt32& w, SInt32& h) const
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{
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x = m_info.m_x;
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y = m_info.m_y;
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w = m_info.m_w;
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h = m_info.m_h;
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}
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void
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CClientProxy1_0::getCursorPos(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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CClientProxy1_0::enter(SInt32 xAbs, SInt32 yAbs,
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UInt32 seqNum, KeyModifierMask mask, bool)
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{
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LOG((CLOG_DEBUG1 "send enter to \"%s\", %d,%d %d %04x", getName().c_str(), xAbs, yAbs, seqNum, mask));
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CProtocolUtil::writef(getStream(), kMsgCEnter,
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xAbs, yAbs, seqNum, mask);
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}
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bool
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CClientProxy1_0::leave()
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{
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LOG((CLOG_DEBUG1 "send leave to \"%s\"", getName().c_str()));
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CProtocolUtil::writef(getStream(), kMsgCLeave);
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// we can never prevent the user from leaving
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return true;
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}
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void
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CClientProxy1_0::setClipboard(ClipboardID id, const IClipboard* clipboard)
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{
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// ignore if this clipboard is already clean
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if (m_clipboard[id].m_dirty) {
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// this clipboard is now clean
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m_clipboard[id].m_dirty = false;
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CClipboard::copy(&m_clipboard[id].m_clipboard, clipboard);
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CString data = m_clipboard[id].m_clipboard.marshall();
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LOG((CLOG_DEBUG "send clipboard %d to \"%s\" size=%d", id, getName().c_str(), data.size()));
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CProtocolUtil::writef(getStream(), kMsgDClipboard, id, 0, &data);
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}
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}
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void
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CClientProxy1_0::grabClipboard(ClipboardID id)
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{
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LOG((CLOG_DEBUG "send grab clipboard %d to \"%s\"", id, getName().c_str()));
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CProtocolUtil::writef(getStream(), kMsgCClipboard, id, 0);
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// this clipboard is now dirty
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m_clipboard[id].m_dirty = true;
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}
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void
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CClientProxy1_0::setClipboardDirty(ClipboardID id, bool dirty)
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{
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m_clipboard[id].m_dirty = dirty;
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}
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void
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CClientProxy1_0::keyDown(KeyID key, KeyModifierMask mask, KeyButton)
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{
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LOG((CLOG_DEBUG1 "send key down to \"%s\" id=%d, mask=0x%04x", getName().c_str(), key, mask));
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CProtocolUtil::writef(getStream(), kMsgDKeyDown1_0, key, mask);
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}
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void
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CClientProxy1_0::keyRepeat(KeyID key, KeyModifierMask mask,
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SInt32 count, KeyButton)
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{
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LOG((CLOG_DEBUG1 "send key repeat to \"%s\" id=%d, mask=0x%04x, count=%d", getName().c_str(), key, mask, count));
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CProtocolUtil::writef(getStream(), kMsgDKeyRepeat1_0, key, mask, count);
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}
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void
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CClientProxy1_0::keyUp(KeyID key, KeyModifierMask mask, KeyButton)
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{
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LOG((CLOG_DEBUG1 "send key up to \"%s\" id=%d, mask=0x%04x", getName().c_str(), key, mask));
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CProtocolUtil::writef(getStream(), kMsgDKeyUp1_0, key, mask);
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}
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void
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CClientProxy1_0::mouseDown(ButtonID button)
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{
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LOG((CLOG_DEBUG1 "send mouse down to \"%s\" id=%d", getName().c_str(), button));
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CProtocolUtil::writef(getStream(), kMsgDMouseDown, button);
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}
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void
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CClientProxy1_0::mouseUp(ButtonID button)
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{
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LOG((CLOG_DEBUG1 "send mouse up to \"%s\" id=%d", getName().c_str(), button));
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CProtocolUtil::writef(getStream(), kMsgDMouseUp, button);
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}
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void
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CClientProxy1_0::mouseMove(SInt32 xAbs, SInt32 yAbs)
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{
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LOG((CLOG_DEBUG2 "send mouse move to \"%s\" %d,%d", getName().c_str(), xAbs, yAbs));
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CProtocolUtil::writef(getStream(), kMsgDMouseMove, xAbs, yAbs);
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}
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void
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CClientProxy1_0::mouseWheel(SInt32 delta)
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{
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LOG((CLOG_DEBUG2 "send mouse wheel to \"%s\" %+d", getName().c_str(), delta));
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CProtocolUtil::writef(getStream(), kMsgDMouseWheel, delta);
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}
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void
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CClientProxy1_0::screensaver(bool on)
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{
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LOG((CLOG_DEBUG1 "send screen saver to \"%s\" on=%d", getName().c_str(), on ? 1 : 0));
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CProtocolUtil::writef(getStream(), kMsgCScreenSaver, on ? 1 : 0);
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}
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void
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CClientProxy1_0::resetOptions()
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{
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LOG((CLOG_DEBUG1 "send reset options to \"%s\"", getName().c_str()));
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CProtocolUtil::writef(getStream(), kMsgCResetOptions);
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// reset heart rate and death
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m_heartbeatAlarm = kHeartRate * kHeartBeatsUntilDeath;
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removeHeartbeatTimer();
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addHeartbeatTimer();
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}
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void
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CClientProxy1_0::setOptions(const COptionsList& options)
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{
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LOG((CLOG_DEBUG1 "send set options to \"%s\" size=%d", getName().c_str(), options.size()));
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CProtocolUtil::writef(getStream(), kMsgDSetOptions, &options);
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// check options
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for (UInt32 i = 0, n = options.size(); i < n; i += 2) {
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if (options[i] == kOptionHeartbeat) {
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double rate = 1.0e-3 * static_cast<double>(options[i + 1]);
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if (rate <= 0.0) {
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rate = -1.0;
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}
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m_heartbeatAlarm = rate * kHeartBeatsUntilDeath;
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removeHeartbeatTimer();
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addHeartbeatTimer();
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}
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}
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}
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bool
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CClientProxy1_0::recvInfo()
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{
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// parse the message
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SInt16 x, y, w, h, dummy1, dummy2, dummy3;
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if (!CProtocolUtil::readf(getStream(), kMsgDInfo + 4,
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&x, &y, &w, &h, &dummy1, &dummy2, &dummy3)) {
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return false;
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}
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LOG((CLOG_DEBUG "received client \"%s\" info shape=%d,%d %dx%d", getName().c_str(), x, y, w, h));
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// validate
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if (w <= 0 || h <= 0) {
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return false;
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}
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// save
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m_info.m_x = x;
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m_info.m_y = y;
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m_info.m_w = w;
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m_info.m_h = h;
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// acknowledge receipt
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LOG((CLOG_DEBUG1 "send info ack to \"%s\"", getName().c_str()));
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CProtocolUtil::writef(getStream(), kMsgCInfoAck);
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return true;
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}
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bool
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CClientProxy1_0::recvClipboard()
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{
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// parse message
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ClipboardID id;
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UInt32 seqNum;
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CString data;
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if (!CProtocolUtil::readf(getStream(),
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kMsgDClipboard + 4, &id, &seqNum, &data)) {
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return false;
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}
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LOG((CLOG_DEBUG "received client \"%s\" clipboard %d seqnum=%d, size=%d", getName().c_str(), id, seqNum, data.size()));
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// validate
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if (id >= kClipboardEnd) {
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return false;
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}
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// save clipboard
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m_clipboard[id].m_clipboard.unmarshall(data, 0);
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m_clipboard[id].m_sequenceNumber = seqNum;
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// notify
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CClipboardInfo* info = new CClipboardInfo;
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info->m_id = id;
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info->m_sequenceNumber = seqNum;
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EVENTQUEUE->addEvent(CEvent(getClipboardChangedEvent(),
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getEventTarget(), info));
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return true;
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}
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bool
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CClientProxy1_0::recvGrabClipboard()
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{
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// parse message
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ClipboardID id;
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UInt32 seqNum;
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if (!CProtocolUtil::readf(getStream(), kMsgCClipboard + 4, &id, &seqNum)) {
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return false;
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}
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LOG((CLOG_DEBUG "received client \"%s\" grabbed clipboard %d seqnum=%d", getName().c_str(), id, seqNum));
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// validate
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if (id >= kClipboardEnd) {
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return false;
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}
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// notify
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CClipboardInfo* info = new CClipboardInfo;
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info->m_id = id;
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info->m_sequenceNumber = seqNum;
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EVENTQUEUE->addEvent(CEvent(getClipboardGrabbedEvent(),
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getEventTarget(), info));
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return true;
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}
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//
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// CClientProxy1_0::CClientClipboard
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//
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CClientProxy1_0::CClientClipboard::CClientClipboard() :
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m_clipboard(),
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m_sequenceNumber(0),
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m_dirty(true)
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{
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// do nothing
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}
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