mirror of
https://github.com/debauchee/barrier.git
synced 2026-02-09 05:13:36 +08:00
12fa99aee0
but making direct calls for other messages from the server. This could cause messages to be handled out of order. Now making a direct call for handshake complete.
740 lines
16 KiB
C++
740 lines
16 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 "CServerProxy.h"
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#include "CClient.h"
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#include "CClipboard.h"
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#include "CProtocolUtil.h"
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#include "OptionTypes.h"
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#include "ProtocolTypes.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 "XBase.h"
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#include <memory>
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//
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// CServerProxy
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//
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CServerProxy::CServerProxy(CClient* client, IStream* stream) :
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m_client(client),
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m_stream(stream),
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m_timer(NULL),
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m_seqNum(0),
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m_compressMouse(false),
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m_ignoreMouse(false),
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m_heartRate(0.0),
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m_parser(&CServerProxy::parseHandshakeMessage)
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{
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assert(m_client != NULL);
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assert(m_stream != NULL);
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// initialize modifier translation table
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for (KeyModifierID id = 0; id < kKeyModifierIDLast; ++id)
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m_modifierTranslationTable[id] = id;
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// handle data on stream
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EVENTQUEUE->adoptHandler(IStream::getInputReadyEvent(),
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m_stream->getEventTarget(),
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new TMethodEventJob<CServerProxy>(this,
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&CServerProxy::handleData));
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// send heartbeat
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installHeartBeat(kHeartRate);
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}
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CServerProxy::~CServerProxy()
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{
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installHeartBeat(-1.0);
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EVENTQUEUE->removeHandler(IStream::getInputReadyEvent(),
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m_stream->getEventTarget());
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}
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void
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CServerProxy::installHeartBeat(double heartRate)
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{
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if (m_timer != NULL) {
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EVENTQUEUE->removeHandler(CEvent::kTimer, m_timer);
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EVENTQUEUE->deleteTimer(m_timer);
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}
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m_heartRate = heartRate;
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if (m_heartRate > 0.0) {
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m_timer = EVENTQUEUE->newTimer(m_heartRate, NULL);
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EVENTQUEUE->adoptHandler(CEvent::kTimer, m_timer,
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new TMethodEventJob<CServerProxy>(this,
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&CServerProxy::handleHeartBeat));
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}
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}
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void
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CServerProxy::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 = m_stream->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 server: %d bytes", n));
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m_client->disconnect("incomplete message from server");
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return;
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}
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// parse message
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LOG((CLOG_DEBUG2 "msg from server: %c%c%c%c", code[0], code[1], code[2], code[3]));
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switch ((this->*m_parser)(code)) {
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case kOkay:
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break;
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case kUnknown:
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LOG((CLOG_ERR "invalid message from server"));
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m_client->disconnect("invalid message from server");
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return;
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case kDisconnect:
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return;
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}
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// next message
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n = m_stream->read(code, 4);
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}
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flushCompressedMouse();
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}
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CServerProxy::EResult
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CServerProxy::parseHandshakeMessage(const UInt8* code)
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{
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if (memcmp(code, kMsgQInfo, 4) == 0) {
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queryInfo();
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}
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else if (memcmp(code, kMsgCInfoAck, 4) == 0) {
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infoAcknowledgment();
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}
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else if (memcmp(code, kMsgDSetOptions, 4) == 0) {
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setOptions();
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// handshake is complete
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m_parser = &CServerProxy::parseMessage;
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m_client->handshakeComplete();
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}
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else if (memcmp(code, kMsgCResetOptions, 4) == 0) {
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resetOptions();
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}
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else if (memcmp(code, kMsgCNoop, 4) == 0) {
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// accept and discard no-op
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}
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else if (memcmp(code, kMsgCClose, 4) == 0) {
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// server wants us to hangup
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LOG((CLOG_DEBUG1 "recv close"));
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m_client->disconnect(NULL);
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return kDisconnect;
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}
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else if (memcmp(code, kMsgEIncompatible, 4) == 0) {
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SInt32 major, minor;
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CProtocolUtil::readf(m_stream,
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kMsgEIncompatible + 4, &major, &minor);
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LOG((CLOG_ERR "server has incompatible version %d.%d", major, minor));
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m_client->disconnect("server has incompatible version");
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return kDisconnect;
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}
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else if (memcmp(code, kMsgEBusy, 4) == 0) {
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LOG((CLOG_ERR "server already has a connected client with name \"%s\"", m_client->getName().c_str()));
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m_client->disconnect("server already has a connected client with our name");
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return kDisconnect;
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}
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else if (memcmp(code, kMsgEUnknown, 4) == 0) {
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LOG((CLOG_ERR "server refused client with name \"%s\"", m_client->getName().c_str()));
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m_client->disconnect("server refused client with our name");
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return kDisconnect;
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}
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else if (memcmp(code, kMsgEBad, 4) == 0) {
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LOG((CLOG_ERR "server disconnected due to a protocol error"));
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m_client->disconnect("server reported a protocol error");
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return kDisconnect;
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}
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else {
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return kUnknown;
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}
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return kOkay;
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}
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CServerProxy::EResult
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CServerProxy::parseMessage(const UInt8* code)
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{
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if (memcmp(code, kMsgDMouseMove, 4) == 0) {
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mouseMove();
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}
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else if (memcmp(code, kMsgDMouseWheel, 4) == 0) {
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mouseWheel();
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}
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else if (memcmp(code, kMsgDKeyDown, 4) == 0) {
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keyDown();
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}
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else if (memcmp(code, kMsgDKeyUp, 4) == 0) {
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keyUp();
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}
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else if (memcmp(code, kMsgDMouseDown, 4) == 0) {
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mouseDown();
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}
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else if (memcmp(code, kMsgDMouseUp, 4) == 0) {
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mouseUp();
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}
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else if (memcmp(code, kMsgDKeyRepeat, 4) == 0) {
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keyRepeat();
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}
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else if (memcmp(code, kMsgCNoop, 4) == 0) {
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// accept and discard no-op
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}
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else if (memcmp(code, kMsgCEnter, 4) == 0) {
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enter();
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}
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else if (memcmp(code, kMsgCLeave, 4) == 0) {
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leave();
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}
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else if (memcmp(code, kMsgCClipboard, 4) == 0) {
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grabClipboard();
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}
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else if (memcmp(code, kMsgCScreenSaver, 4) == 0) {
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screensaver();
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}
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else if (memcmp(code, kMsgQInfo, 4) == 0) {
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queryInfo();
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}
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else if (memcmp(code, kMsgCInfoAck, 4) == 0) {
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infoAcknowledgment();
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}
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else if (memcmp(code, kMsgDClipboard, 4) == 0) {
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setClipboard();
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}
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else if (memcmp(code, kMsgCResetOptions, 4) == 0) {
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resetOptions();
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}
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else if (memcmp(code, kMsgDSetOptions, 4) == 0) {
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setOptions();
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}
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else if (memcmp(code, kMsgCClose, 4) == 0) {
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// server wants us to hangup
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LOG((CLOG_DEBUG1 "recv close"));
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m_client->disconnect(NULL);
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return kDisconnect;
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}
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else if (memcmp(code, kMsgEBad, 4) == 0) {
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LOG((CLOG_ERR "server disconnected due to a protocol error"));
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m_client->disconnect("server reported a protocol error");
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return kDisconnect;
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}
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else {
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return kUnknown;
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}
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return kOkay;
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}
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void
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CServerProxy::handleHeartBeat(const CEvent&, void*)
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{
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CProtocolUtil::writef(m_stream, kMsgCNoop);
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}
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void
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CServerProxy::onInfoChanged()
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{
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// ignore mouse motion until we receive acknowledgment of our info
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// change message.
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m_ignoreMouse = true;
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// send info update
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queryInfo();
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}
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bool
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CServerProxy::onGrabClipboard(ClipboardID id)
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{
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LOG((CLOG_DEBUG1 "sending clipboard %d changed", id));
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CProtocolUtil::writef(m_stream, kMsgCClipboard, id, m_seqNum);
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return true;
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}
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void
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CServerProxy::onClipboardChanged(ClipboardID id, const IClipboard* clipboard)
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{
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CString data = IClipboard::marshall(clipboard);
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LOG((CLOG_DEBUG1 "sending clipboard %d seqnum=%d, size=%d", id, m_seqNum, data.size()));
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CProtocolUtil::writef(m_stream, kMsgDClipboard, id, m_seqNum, &data);
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}
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void
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CServerProxy::flushCompressedMouse()
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{
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if (m_compressMouse) {
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m_compressMouse = false;
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m_client->mouseMove(m_xMouse, m_yMouse);
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}
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}
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void
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CServerProxy::sendInfo(const CClientInfo& info)
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{
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LOG((CLOG_DEBUG1 "sending info shape=%d,%d %dx%d", info.m_x, info.m_y, info.m_w, info.m_h));
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CProtocolUtil::writef(m_stream, kMsgDInfo,
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info.m_x, info.m_y,
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info.m_w, info.m_h, 0, 0, 0);
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}
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KeyID
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CServerProxy::translateKey(KeyID id) const
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{
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static const KeyID s_translationTable[kKeyModifierIDLast][2] = {
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{ kKeyNone, kKeyNone },
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{ kKeyShift_L, kKeyShift_R },
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{ kKeyControl_L, kKeyControl_R },
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{ kKeyAlt_L, kKeyAlt_R },
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{ kKeyMeta_L, kKeyMeta_R },
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{ kKeySuper_L, kKeySuper_R }
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};
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KeyModifierID id2 = kKeyModifierIDNull;
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UInt32 side = 0;
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switch (id) {
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case kKeyShift_L:
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id2 = kKeyModifierIDShift;
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side = 0;
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break;
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case kKeyShift_R:
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id2 = kKeyModifierIDShift;
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side = 1;
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break;
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case kKeyControl_L:
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id2 = kKeyModifierIDControl;
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side = 0;
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break;
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case kKeyControl_R:
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id2 = kKeyModifierIDControl;
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side = 1;
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break;
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case kKeyAlt_L:
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id2 = kKeyModifierIDAlt;
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side = 0;
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break;
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case kKeyAlt_R:
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id2 = kKeyModifierIDAlt;
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side = 1;
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break;
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case kKeyMeta_L:
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id2 = kKeyModifierIDMeta;
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side = 0;
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break;
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case kKeyMeta_R:
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id2 = kKeyModifierIDMeta;
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side = 1;
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break;
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case kKeySuper_L:
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id2 = kKeyModifierIDSuper;
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side = 0;
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break;
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case kKeySuper_R:
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id2 = kKeyModifierIDSuper;
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side = 1;
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break;
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}
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if (id2 != kKeyModifierIDNull) {
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return s_translationTable[m_modifierTranslationTable[id2]][side];
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}
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else {
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return id;
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}
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}
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KeyModifierMask
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CServerProxy::translateModifierMask(KeyModifierMask mask) const
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{
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static const KeyModifierMask s_masks[kKeyModifierIDLast] = {
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0x0000,
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KeyModifierShift,
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KeyModifierControl,
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KeyModifierAlt,
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KeyModifierMeta,
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KeyModifierSuper
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};
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KeyModifierMask newMask = mask & ~(KeyModifierShift |
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KeyModifierControl |
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KeyModifierAlt |
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KeyModifierMeta |
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KeyModifierSuper);
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if ((mask & KeyModifierShift) != 0) {
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newMask |= s_masks[m_modifierTranslationTable[kKeyModifierIDShift]];
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}
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if ((mask & KeyModifierControl) != 0) {
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newMask |= s_masks[m_modifierTranslationTable[kKeyModifierIDControl]];
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}
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if ((mask & KeyModifierAlt) != 0) {
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newMask |= s_masks[m_modifierTranslationTable[kKeyModifierIDAlt]];
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}
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if ((mask & KeyModifierMeta) != 0) {
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newMask |= s_masks[m_modifierTranslationTable[kKeyModifierIDMeta]];
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}
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if ((mask & KeyModifierSuper) != 0) {
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newMask |= s_masks[m_modifierTranslationTable[kKeyModifierIDSuper]];
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}
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return newMask;
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}
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void
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CServerProxy::enter()
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{
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// parse
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SInt16 x, y;
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UInt16 mask;
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UInt32 seqNum;
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CProtocolUtil::readf(m_stream, kMsgCEnter + 4, &x, &y, &seqNum, &mask);
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LOG((CLOG_DEBUG1 "recv enter, %d,%d %d %04x", x, y, seqNum, mask));
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// discard old compressed mouse motion, if any
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m_compressMouse = false;
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m_seqNum = seqNum;
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// forward
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m_client->enter(x, y, seqNum, static_cast<KeyModifierMask>(mask), false);
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}
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void
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CServerProxy::leave()
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{
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// parse
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LOG((CLOG_DEBUG1 "recv leave"));
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// send last mouse motion
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flushCompressedMouse();
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// forward
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m_client->leave();
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}
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void
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CServerProxy::setClipboard()
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{
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// parse
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ClipboardID id;
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UInt32 seqNum;
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CString data;
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CProtocolUtil::readf(m_stream, kMsgDClipboard + 4, &id, &seqNum, &data);
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LOG((CLOG_DEBUG "recv clipboard %d size=%d", id, data.size()));
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// validate
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if (id >= kClipboardEnd) {
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return;
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}
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// forward
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CClipboard clipboard;
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clipboard.unmarshall(data, 0);
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m_client->setClipboard(id, &clipboard);
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}
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void
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CServerProxy::grabClipboard()
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{
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// parse
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ClipboardID id;
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UInt32 seqNum;
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CProtocolUtil::readf(m_stream, kMsgCClipboard + 4, &id, &seqNum);
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LOG((CLOG_DEBUG "recv grab clipboard %d", id));
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// validate
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if (id >= kClipboardEnd) {
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return;
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}
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// forward
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m_client->grabClipboard(id);
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}
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void
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CServerProxy::keyDown()
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{
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// get mouse up to date
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flushCompressedMouse();
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// parse
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UInt16 id, mask, button;
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CProtocolUtil::readf(m_stream, kMsgDKeyDown + 4, &id, &mask, &button);
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LOG((CLOG_DEBUG1 "recv key down id=%d, mask=0x%04x, button=0x%04x", id, mask, button));
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// translate
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KeyID id2 = translateKey(static_cast<KeyID>(id));
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KeyModifierMask mask2 = translateModifierMask(
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static_cast<KeyModifierMask>(mask));
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if (id2 != static_cast<KeyID>(id) ||
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mask2 != static_cast<KeyModifierMask>(mask))
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LOG((CLOG_DEBUG1 "key down translated to id=%d, mask=0x%04x", id2, mask2));
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// forward
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m_client->keyDown(id2, mask2, button);
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}
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void
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CServerProxy::keyRepeat()
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{
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// get mouse up to date
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flushCompressedMouse();
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// parse
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UInt16 id, mask, count, button;
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CProtocolUtil::readf(m_stream, kMsgDKeyRepeat + 4,
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&id, &mask, &count, &button);
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LOG((CLOG_DEBUG1 "recv key repeat id=%d, mask=0x%04x, count=%d, button=0x%04x", id, mask, count, button));
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// translate
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KeyID id2 = translateKey(static_cast<KeyID>(id));
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KeyModifierMask mask2 = translateModifierMask(
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static_cast<KeyModifierMask>(mask));
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if (id2 != static_cast<KeyID>(id) ||
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mask2 != static_cast<KeyModifierMask>(mask))
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LOG((CLOG_DEBUG1 "key repeat translated to id=%d, mask=0x%04x", id2, mask2));
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// forward
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m_client->keyRepeat(id2, mask2, count, button);
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}
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void
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CServerProxy::keyUp()
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{
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// get mouse up to date
|
|
flushCompressedMouse();
|
|
|
|
// parse
|
|
UInt16 id, mask, button;
|
|
CProtocolUtil::readf(m_stream, kMsgDKeyUp + 4, &id, &mask, &button);
|
|
LOG((CLOG_DEBUG1 "recv key up id=%d, mask=0x%04x, button=0x%04x", id, mask, button));
|
|
|
|
// translate
|
|
KeyID id2 = translateKey(static_cast<KeyID>(id));
|
|
KeyModifierMask mask2 = translateModifierMask(
|
|
static_cast<KeyModifierMask>(mask));
|
|
if (id2 != static_cast<KeyID>(id) ||
|
|
mask2 != static_cast<KeyModifierMask>(mask))
|
|
LOG((CLOG_DEBUG1 "key up translated to id=%d, mask=0x%04x", id2, mask2));
|
|
|
|
// forward
|
|
m_client->keyUp(id2, mask2, button);
|
|
}
|
|
|
|
void
|
|
CServerProxy::mouseDown()
|
|
{
|
|
// get mouse up to date
|
|
flushCompressedMouse();
|
|
|
|
// parse
|
|
SInt8 id;
|
|
CProtocolUtil::readf(m_stream, kMsgDMouseDown + 4, &id);
|
|
LOG((CLOG_DEBUG1 "recv mouse down id=%d", id));
|
|
|
|
// forward
|
|
m_client->mouseDown(static_cast<ButtonID>(id));
|
|
}
|
|
|
|
void
|
|
CServerProxy::mouseUp()
|
|
{
|
|
// get mouse up to date
|
|
flushCompressedMouse();
|
|
|
|
// parse
|
|
SInt8 id;
|
|
CProtocolUtil::readf(m_stream, kMsgDMouseUp + 4, &id);
|
|
LOG((CLOG_DEBUG1 "recv mouse up id=%d", id));
|
|
|
|
// forward
|
|
m_client->mouseUp(static_cast<ButtonID>(id));
|
|
}
|
|
|
|
void
|
|
CServerProxy::mouseMove()
|
|
{
|
|
// parse
|
|
bool ignore;
|
|
SInt16 x, y;
|
|
CProtocolUtil::readf(m_stream, kMsgDMouseMove + 4, &x, &y);
|
|
|
|
// note if we should ignore the move
|
|
ignore = m_ignoreMouse;
|
|
|
|
// compress mouse motion events if more input follows
|
|
if (!ignore && !m_compressMouse && m_stream->isReady()) {
|
|
m_compressMouse = true;
|
|
}
|
|
|
|
// if compressing then ignore the motion but record it
|
|
if (m_compressMouse) {
|
|
ignore = true;
|
|
m_xMouse = x;
|
|
m_yMouse = y;
|
|
}
|
|
LOG((CLOG_DEBUG2 "recv mouse move %d,%d", x, y));
|
|
|
|
// forward
|
|
if (!ignore) {
|
|
m_client->mouseMove(x, y);
|
|
}
|
|
}
|
|
|
|
void
|
|
CServerProxy::mouseWheel()
|
|
{
|
|
// get mouse up to date
|
|
flushCompressedMouse();
|
|
|
|
// parse
|
|
SInt16 delta;
|
|
CProtocolUtil::readf(m_stream, kMsgDMouseWheel + 4, &delta);
|
|
LOG((CLOG_DEBUG2 "recv mouse wheel %+d", delta));
|
|
|
|
// forward
|
|
m_client->mouseWheel(delta);
|
|
}
|
|
|
|
void
|
|
CServerProxy::screensaver()
|
|
{
|
|
// parse
|
|
SInt8 on;
|
|
CProtocolUtil::readf(m_stream, kMsgCScreenSaver + 4, &on);
|
|
LOG((CLOG_DEBUG1 "recv screen saver on=%d", on));
|
|
|
|
// forward
|
|
m_client->screensaver(on != 0);
|
|
}
|
|
|
|
void
|
|
CServerProxy::resetOptions()
|
|
{
|
|
// parse
|
|
LOG((CLOG_DEBUG1 "recv reset options"));
|
|
|
|
// forward
|
|
m_client->resetOptions();
|
|
|
|
// reset heart rate and send heartbeat if necessary
|
|
installHeartBeat(kHeartRate);
|
|
if (m_heartRate >= 0.0) {
|
|
CProtocolUtil::writef(m_stream, kMsgCNoop);
|
|
}
|
|
|
|
// reset modifier translation table
|
|
for (KeyModifierID id = 0; id < kKeyModifierIDLast; ++id) {
|
|
m_modifierTranslationTable[id] = id;
|
|
}
|
|
}
|
|
|
|
void
|
|
CServerProxy::setOptions()
|
|
{
|
|
// parse
|
|
COptionsList options;
|
|
CProtocolUtil::readf(m_stream, kMsgDSetOptions + 4, &options);
|
|
LOG((CLOG_DEBUG1 "recv set options size=%d", options.size()));
|
|
|
|
// forward
|
|
m_client->setOptions(options);
|
|
|
|
// update modifier table
|
|
for (UInt32 i = 0, n = options.size(); i < n; i += 2) {
|
|
KeyModifierID id = kKeyModifierIDNull;
|
|
if (options[i] == kOptionModifierMapForShift) {
|
|
id = kKeyModifierIDShift;
|
|
}
|
|
else if (options[i] == kOptionModifierMapForControl) {
|
|
id = kKeyModifierIDControl;
|
|
}
|
|
else if (options[i] == kOptionModifierMapForAlt) {
|
|
id = kKeyModifierIDAlt;
|
|
}
|
|
else if (options[i] == kOptionModifierMapForMeta) {
|
|
id = kKeyModifierIDMeta;
|
|
}
|
|
else if (options[i] == kOptionModifierMapForSuper) {
|
|
id = kKeyModifierIDSuper;
|
|
}
|
|
else if (options[i] == kOptionHeartbeat) {
|
|
// update heart rate and send heartbeat if necessary
|
|
installHeartBeat(1.0e-3 * static_cast<double>(options[i + 1]));
|
|
if (m_heartRate >= 0.0) {
|
|
CProtocolUtil::writef(m_stream, kMsgCNoop);
|
|
}
|
|
}
|
|
if (id != kKeyModifierIDNull) {
|
|
m_modifierTranslationTable[id] =
|
|
static_cast<KeyModifierID>(options[i + 1]);
|
|
LOG((CLOG_DEBUG1 "modifier %d mapped to %d", id, m_modifierTranslationTable[id]));
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
CServerProxy::queryInfo()
|
|
{
|
|
CClientInfo info;
|
|
m_client->getShape(info.m_x, info.m_y, info.m_w, info.m_h);
|
|
sendInfo(info);
|
|
}
|
|
|
|
void
|
|
CServerProxy::infoAcknowledgment()
|
|
{
|
|
LOG((CLOG_DEBUG1 "recv info acknowledgment"));
|
|
m_ignoreMouse = false;
|
|
}
|