1 | /*
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2 | * synergy -- mouse and keyboard sharing utility
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3 | * Copyright (C) 2002 Chris Schoeneman
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4 | *
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5 | * This package is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * found in the file COPYING that should have accompanied this file.
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8 | *
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9 | * This package is distributed in the hope that it will be useful,
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10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 | * GNU General Public License for more details.
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13 | */
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14 |
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15 | #include "CClient.h"
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16 | #include "CServerProxy.h"
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17 | #include "CScreen.h"
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18 | #include "CClipboard.h"
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19 | #include "CPacketStreamFilter.h"
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20 | #include "CProtocolUtil.h"
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21 | #include "ProtocolTypes.h"
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22 | #include "XSynergy.h"
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23 | #include "IDataSocket.h"
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24 | #include "ISocketFactory.h"
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25 | #include "IStreamFilterFactory.h"
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26 | #include "CLog.h"
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27 | #include "IEventQueue.h"
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28 | #include "TMethodEventJob.h"
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29 |
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30 | //
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31 | // CClient
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32 | //
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33 |
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34 | CEvent::Type CClient::s_connectedEvent = CEvent::kUnknown;
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35 | CEvent::Type CClient::s_connectionFailedEvent = CEvent::kUnknown;
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36 | CEvent::Type CClient::s_disconnectedEvent = CEvent::kUnknown;
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37 |
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38 | CClient::CClient(const CString& name, const CNetworkAddress& address,
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39 | ISocketFactory* socketFactory,
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40 | IStreamFilterFactory* streamFilterFactory,
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41 | CScreen* screen) :
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42 | m_name(name),
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43 | m_serverAddress(address),
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44 | m_socketFactory(socketFactory),
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45 | m_streamFilterFactory(streamFilterFactory),
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46 | m_screen(screen),
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47 | m_stream(NULL),
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48 | m_timer(NULL),
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49 | m_server(NULL),
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50 | m_ready(false),
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51 | m_active(false),
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52 | m_suspended(false),
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53 | m_connectOnResume(false)
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54 | {
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55 | assert(m_socketFactory != NULL);
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56 | assert(m_screen != NULL);
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57 |
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58 | // register suspend/resume event handlers
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59 | EVENTQUEUE->adoptHandler(IScreen::getSuspendEvent(),
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60 | getEventTarget(),
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61 | new TMethodEventJob<CClient>(this,
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62 | &CClient::handleSuspend));
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63 | EVENTQUEUE->adoptHandler(IScreen::getResumeEvent(),
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64 | getEventTarget(),
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65 | new TMethodEventJob<CClient>(this,
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66 | &CClient::handleResume));
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67 | }
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68 |
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69 | CClient::~CClient()
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70 | {
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71 | EVENTQUEUE->removeHandler(IScreen::getSuspendEvent(),
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72 | getEventTarget());
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73 | EVENTQUEUE->removeHandler(IScreen::getResumeEvent(),
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74 | getEventTarget());
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75 |
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76 | cleanupTimer();
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77 | cleanupScreen();
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78 | cleanupConnecting();
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79 | cleanupConnection();
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80 | delete m_socketFactory;
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81 | delete m_streamFilterFactory;
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82 | }
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83 |
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84 | void
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85 | CClient::connect()
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86 | {
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87 | if (m_stream != NULL) {
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88 | return;
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89 | }
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90 | if (m_suspended) {
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91 | m_connectOnResume = true;
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92 | return;
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93 | }
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94 |
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95 | try {
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96 | // resolve the server hostname. do this every time we connect
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97 | // in case we couldn't resolve the address earlier or the address
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98 | // has changed (which can happen frequently if this is a laptop
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99 | // being shuttled between various networks). patch by Brent
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100 | // Priddy.
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101 | m_serverAddress.resolve();
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102 |
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103 | // create the socket
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104 | IDataSocket* socket = m_socketFactory->create();
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105 |
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106 | // filter socket messages, including a packetizing filter
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107 | m_stream = socket;
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108 | if (m_streamFilterFactory != NULL) {
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109 | m_stream = m_streamFilterFactory->create(m_stream, true);
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110 | }
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111 | m_stream = new CPacketStreamFilter(m_stream, true);
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112 |
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113 | // connect
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114 | LOG((CLOG_DEBUG1 "connecting to server"));
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115 | setupConnecting();
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116 | setupTimer();
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117 | socket->connect(m_serverAddress);
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118 | }
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119 | catch (XBase& e) {
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120 | cleanupTimer();
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121 | cleanupConnecting();
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122 | delete m_stream;
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123 | m_stream = NULL;
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124 | LOG((CLOG_DEBUG1 "connection failed"));
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125 | sendConnectionFailedEvent(e.what());
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126 | return;
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127 | }
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128 | }
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129 |
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130 | void
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131 | CClient::disconnect(const char* msg)
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132 | {
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133 | m_connectOnResume = false;
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134 | cleanupTimer();
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135 | cleanupScreen();
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136 | cleanupConnecting();
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137 | cleanupConnection();
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138 | if (msg != NULL) {
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139 | sendConnectionFailedEvent(msg);
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140 | }
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141 | else {
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142 | sendEvent(getDisconnectedEvent(), NULL);
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143 | }
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144 | }
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145 |
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146 | void
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147 | CClient::handshakeComplete()
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148 | {
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149 | m_ready = true;
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150 | m_screen->enable();
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151 | sendEvent(getConnectedEvent(), NULL);
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152 | }
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153 |
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154 | bool
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155 | CClient::isConnected() const
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156 | {
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157 | return (m_server != NULL);
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158 | }
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159 |
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160 | bool
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161 | CClient::isConnecting() const
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162 | {
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163 | return (m_timer != NULL);
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164 | }
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165 |
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166 | CNetworkAddress
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167 | CClient::getServerAddress() const
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168 | {
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169 | return m_serverAddress;
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170 | }
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171 |
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172 | CEvent::Type
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173 | CClient::getConnectedEvent()
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174 | {
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175 | return CEvent::registerTypeOnce(s_connectedEvent,
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176 | "CClient::connected");
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177 | }
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178 |
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179 | CEvent::Type
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180 | CClient::getConnectionFailedEvent()
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181 | {
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182 | return CEvent::registerTypeOnce(s_connectionFailedEvent,
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183 | "CClient::failed");
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184 | }
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185 |
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186 | CEvent::Type
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187 | CClient::getDisconnectedEvent()
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188 | {
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189 | return CEvent::registerTypeOnce(s_disconnectedEvent,
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190 | "CClient::disconnected");
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191 | }
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192 |
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193 | void*
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194 | CClient::getEventTarget() const
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195 | {
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196 | return m_screen->getEventTarget();
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197 | }
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198 |
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199 | bool
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200 | CClient::getClipboard(ClipboardID id, IClipboard* clipboard) const
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201 | {
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202 | return m_screen->getClipboard(id, clipboard);
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203 | }
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204 |
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205 | void
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206 | CClient::getShape(SInt32& x, SInt32& y, SInt32& w, SInt32& h) const
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207 | {
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208 | m_screen->getShape(x, y, w, h);
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209 | }
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210 |
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211 | void
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212 | CClient::getCursorPos(SInt32& x, SInt32& y) const
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213 | {
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214 | m_screen->getCursorPos(x, y);
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215 | }
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216 |
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217 | void
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218 | CClient::enter(SInt32 xAbs, SInt32 yAbs, UInt32, KeyModifierMask mask, bool)
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219 | {
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220 | m_active = true;
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221 | m_screen->mouseMove(xAbs, yAbs);
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222 | m_screen->enter(mask);
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223 | }
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224 |
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225 | bool
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226 | CClient::leave()
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227 | {
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228 | m_screen->leave();
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229 |
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230 | m_active = false;
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231 |
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232 | // send clipboards that we own and that have changed
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233 | for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
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234 | if (m_ownClipboard[id]) {
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235 | sendClipboard(id);
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236 | }
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237 | }
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238 |
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239 | return true;
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240 | }
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241 |
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242 | void
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243 | CClient::setClipboard(ClipboardID id, const IClipboard* clipboard)
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244 | {
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245 | m_screen->setClipboard(id, clipboard);
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246 | m_ownClipboard[id] = false;
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247 | m_sentClipboard[id] = false;
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248 | }
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249 |
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250 | void
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251 | CClient::grabClipboard(ClipboardID id)
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252 | {
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253 | m_screen->grabClipboard(id);
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254 | m_ownClipboard[id] = false;
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255 | m_sentClipboard[id] = false;
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256 | }
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257 |
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258 | void
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259 | CClient::setClipboardDirty(ClipboardID, bool)
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260 | {
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261 | assert(0 && "shouldn't be called");
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262 | }
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263 |
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264 | void
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265 | CClient::keyDown(KeyID id, KeyModifierMask mask, KeyButton button)
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266 | {
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267 | m_screen->keyDown(id, mask, button);
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268 | }
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269 |
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270 | void
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271 | CClient::keyRepeat(KeyID id, KeyModifierMask mask,
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272 | SInt32 count, KeyButton button)
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273 | {
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274 | m_screen->keyRepeat(id, mask, count, button);
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275 | }
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276 |
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277 | void
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278 | CClient::keyUp(KeyID id, KeyModifierMask mask, KeyButton button)
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279 | {
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280 | m_screen->keyUp(id, mask, button);
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281 | }
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282 |
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283 | void
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284 | CClient::mouseDown(ButtonID id)
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285 | {
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286 | m_screen->mouseDown(id);
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287 | }
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288 |
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289 | void
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290 | CClient::mouseUp(ButtonID id)
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291 | {
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292 | m_screen->mouseUp(id);
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293 | }
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294 |
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295 | void
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296 | CClient::mouseMove(SInt32 x, SInt32 y)
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297 | {
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298 | m_screen->mouseMove(x, y);
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299 | }
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300 |
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301 | void
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302 | CClient::mouseRelativeMove(SInt32 dx, SInt32 dy)
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303 | {
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304 | m_screen->mouseRelativeMove(dx, dy);
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305 | }
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306 |
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307 | void
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308 | CClient::mouseWheel(SInt32 xDelta, SInt32 yDelta)
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309 | {
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310 | m_screen->mouseWheel(xDelta, yDelta);
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311 | }
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312 |
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313 | void
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314 | CClient::screensaver(bool activate)
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315 | {
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316 | m_screen->screensaver(activate);
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317 | }
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318 |
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319 | void
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320 | CClient::resetOptions()
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321 | {
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322 | m_screen->resetOptions();
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323 | }
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324 |
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325 | void
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326 | CClient::setOptions(const COptionsList& options)
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327 | {
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328 | m_screen->setOptions(options);
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329 | }
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330 |
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331 | CString
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332 | CClient::getName() const
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333 | {
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334 | return m_name;
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335 | }
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336 |
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337 | void
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338 | CClient::sendClipboard(ClipboardID id)
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339 | {
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340 | // note -- m_mutex must be locked on entry
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341 | assert(m_screen != NULL);
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342 | assert(m_server != NULL);
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343 |
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344 | // get clipboard data. set the clipboard time to the last
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345 | // clipboard time before getting the data from the screen
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346 | // as the screen may detect an unchanged clipboard and
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347 | // avoid copying the data.
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348 | CClipboard clipboard;
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349 | if (clipboard.open(m_timeClipboard[id])) {
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350 | clipboard.close();
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351 | }
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352 | m_screen->getClipboard(id, &clipboard);
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353 |
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354 | // check time
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355 | if (m_timeClipboard[id] == 0 ||
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356 | clipboard.getTime() != m_timeClipboard[id]) {
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357 | // save new time
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358 | m_timeClipboard[id] = clipboard.getTime();
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359 |
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360 | // marshall the data
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361 | CString data = clipboard.marshall();
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362 |
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363 | // save and send data if different or not yet sent
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364 | if (!m_sentClipboard[id] || data != m_dataClipboard[id]) {
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365 | m_sentClipboard[id] = true;
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366 | m_dataClipboard[id] = data;
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367 | m_server->onClipboardChanged(id, &clipboard);
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368 | }
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369 | }
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370 | }
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371 |
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372 | void
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373 | CClient::sendEvent(CEvent::Type type, void* data)
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374 | {
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375 | EVENTQUEUE->addEvent(CEvent(type, getEventTarget(), data));
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376 | }
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377 |
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378 | void
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379 | CClient::sendConnectionFailedEvent(const char* msg)
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380 | {
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381 | CFailInfo* info = (CFailInfo*)malloc(sizeof(CFailInfo) + strlen(msg));
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382 | info->m_retry = true;
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383 | strcpy(info->m_what, msg);
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384 | sendEvent(getConnectionFailedEvent(), info);
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385 | }
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386 |
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387 | void
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388 | CClient::setupConnecting()
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389 | {
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390 | assert(m_stream != NULL);
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391 |
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392 | EVENTQUEUE->adoptHandler(IDataSocket::getConnectedEvent(),
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393 | m_stream->getEventTarget(),
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394 | new TMethodEventJob<CClient>(this,
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395 | &CClient::handleConnected));
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396 | EVENTQUEUE->adoptHandler(IDataSocket::getConnectionFailedEvent(),
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397 | m_stream->getEventTarget(),
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398 | new TMethodEventJob<CClient>(this,
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399 | &CClient::handleConnectionFailed));
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400 | }
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401 |
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402 | void
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403 | CClient::setupConnection()
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404 | {
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405 | assert(m_stream != NULL);
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406 |
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407 | EVENTQUEUE->adoptHandler(ISocket::getDisconnectedEvent(),
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408 | m_stream->getEventTarget(),
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409 | new TMethodEventJob<CClient>(this,
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410 | &CClient::handleDisconnected));
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411 | EVENTQUEUE->adoptHandler(IStream::getInputReadyEvent(),
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412 | m_stream->getEventTarget(),
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413 | new TMethodEventJob<CClient>(this,
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414 | &CClient::handleHello));
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415 | EVENTQUEUE->adoptHandler(IStream::getOutputErrorEvent(),
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416 | m_stream->getEventTarget(),
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417 | new TMethodEventJob<CClient>(this,
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418 | &CClient::handleOutputError));
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419 | EVENTQUEUE->adoptHandler(IStream::getInputShutdownEvent(),
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420 | m_stream->getEventTarget(),
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421 | new TMethodEventJob<CClient>(this,
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422 | &CClient::handleDisconnected));
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423 | EVENTQUEUE->adoptHandler(IStream::getOutputShutdownEvent(),
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424 | m_stream->getEventTarget(),
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425 | new TMethodEventJob<CClient>(this,
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426 | &CClient::handleDisconnected));
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427 | }
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428 |
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429 | void
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430 | CClient::setupScreen()
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431 | {
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432 | assert(m_server == NULL);
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433 |
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434 | m_ready = false;
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435 | m_server = new CServerProxy(this, m_stream);
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436 | EVENTQUEUE->adoptHandler(IScreen::getShapeChangedEvent(),
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437 | getEventTarget(),
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438 | new TMethodEventJob<CClient>(this,
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439 | &CClient::handleShapeChanged));
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440 | EVENTQUEUE->adoptHandler(IScreen::getClipboardGrabbedEvent(),
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441 | getEventTarget(),
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442 | new TMethodEventJob<CClient>(this,
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443 | &CClient::handleClipboardGrabbed));
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444 | }
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445 |
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446 | void
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447 | CClient::setupTimer()
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448 | {
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449 | assert(m_timer == NULL);
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450 |
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451 | m_timer = EVENTQUEUE->newOneShotTimer(15.0, NULL);
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452 | EVENTQUEUE->adoptHandler(CEvent::kTimer, m_timer,
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453 | new TMethodEventJob<CClient>(this,
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454 | &CClient::handleConnectTimeout));
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455 | }
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456 |
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457 | void
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458 | CClient::cleanupConnecting()
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459 | {
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460 | if (m_stream != NULL) {
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461 | EVENTQUEUE->removeHandler(IDataSocket::getConnectedEvent(),
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462 | m_stream->getEventTarget());
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463 | EVENTQUEUE->removeHandler(IDataSocket::getConnectionFailedEvent(),
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464 | m_stream->getEventTarget());
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465 | }
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466 | }
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467 |
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468 | void
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469 | CClient::cleanupConnection()
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470 | {
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471 | if (m_stream != NULL) {
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472 | EVENTQUEUE->removeHandler(IStream::getInputReadyEvent(),
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473 | m_stream->getEventTarget());
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474 | EVENTQUEUE->removeHandler(IStream::getOutputErrorEvent(),
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475 | m_stream->getEventTarget());
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476 | EVENTQUEUE->removeHandler(IStream::getInputShutdownEvent(),
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477 | m_stream->getEventTarget());
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478 | EVENTQUEUE->removeHandler(IStream::getOutputShutdownEvent(),
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479 | m_stream->getEventTarget());
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480 | EVENTQUEUE->removeHandler(ISocket::getDisconnectedEvent(),
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481 | m_stream->getEventTarget());
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482 | delete m_stream;
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483 | m_stream = NULL;
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484 | }
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485 | }
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486 |
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487 | void
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488 | CClient::cleanupScreen()
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489 | {
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490 | if (m_server != NULL) {
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491 | if (m_ready) {
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492 | m_screen->disable();
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493 | m_ready = false;
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494 | }
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495 | EVENTQUEUE->removeHandler(IScreen::getShapeChangedEvent(),
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496 | getEventTarget());
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497 | EVENTQUEUE->removeHandler(IScreen::getClipboardGrabbedEvent(),
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498 | getEventTarget());
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499 | delete m_server;
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500 | m_server = NULL;
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501 | }
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502 | }
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503 |
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504 | void
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505 | CClient::cleanupTimer()
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506 | {
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507 | if (m_timer != NULL) {
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508 | EVENTQUEUE->removeHandler(CEvent::kTimer, m_timer);
|
---|
509 | EVENTQUEUE->deleteTimer(m_timer);
|
---|
510 | m_timer = NULL;
|
---|
511 | }
|
---|
512 | }
|
---|
513 |
|
---|
514 | void
|
---|
515 | CClient::handleConnected(const CEvent&, void*)
|
---|
516 | {
|
---|
517 | LOG((CLOG_DEBUG1 "connected; wait for hello"));
|
---|
518 | cleanupConnecting();
|
---|
519 | setupConnection();
|
---|
520 |
|
---|
521 | // reset clipboard state
|
---|
522 | for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
|
---|
523 | m_ownClipboard[id] = false;
|
---|
524 | m_sentClipboard[id] = false;
|
---|
525 | m_timeClipboard[id] = 0;
|
---|
526 | }
|
---|
527 | }
|
---|
528 |
|
---|
529 | void
|
---|
530 | CClient::handleConnectionFailed(const CEvent& event, void*)
|
---|
531 | {
|
---|
532 | IDataSocket::CConnectionFailedInfo* info =
|
---|
533 | reinterpret_cast<IDataSocket::CConnectionFailedInfo*>(event.getData());
|
---|
534 |
|
---|
535 | cleanupTimer();
|
---|
536 | cleanupConnecting();
|
---|
537 | delete m_stream;
|
---|
538 | m_stream = NULL;
|
---|
539 | LOG((CLOG_DEBUG1 "connection failed"));
|
---|
540 | sendConnectionFailedEvent(info->m_what);
|
---|
541 | }
|
---|
542 |
|
---|
543 | void
|
---|
544 | CClient::handleConnectTimeout(const CEvent&, void*)
|
---|
545 | {
|
---|
546 | cleanupTimer();
|
---|
547 | cleanupConnecting();
|
---|
548 | cleanupConnection();
|
---|
549 | delete m_stream;
|
---|
550 | m_stream = NULL;
|
---|
551 | LOG((CLOG_DEBUG1 "connection timed out"));
|
---|
552 | sendConnectionFailedEvent("Timed out");
|
---|
553 | }
|
---|
554 |
|
---|
555 | void
|
---|
556 | CClient::handleOutputError(const CEvent&, void*)
|
---|
557 | {
|
---|
558 | cleanupTimer();
|
---|
559 | cleanupScreen();
|
---|
560 | cleanupConnection();
|
---|
561 | LOG((CLOG_WARN "error sending to server"));
|
---|
562 | sendEvent(getDisconnectedEvent(), NULL);
|
---|
563 | }
|
---|
564 |
|
---|
565 | void
|
---|
566 | CClient::handleDisconnected(const CEvent&, void*)
|
---|
567 | {
|
---|
568 | cleanupTimer();
|
---|
569 | cleanupScreen();
|
---|
570 | cleanupConnection();
|
---|
571 | LOG((CLOG_DEBUG1 "disconnected"));
|
---|
572 | sendEvent(getDisconnectedEvent(), NULL);
|
---|
573 | }
|
---|
574 |
|
---|
575 | void
|
---|
576 | CClient::handleShapeChanged(const CEvent&, void*)
|
---|
577 | {
|
---|
578 | LOG((CLOG_DEBUG "resolution changed"));
|
---|
579 | m_server->onInfoChanged();
|
---|
580 | }
|
---|
581 |
|
---|
582 | void
|
---|
583 | CClient::handleClipboardGrabbed(const CEvent& event, void*)
|
---|
584 | {
|
---|
585 | const IScreen::CClipboardInfo* info =
|
---|
586 | reinterpret_cast<const IScreen::CClipboardInfo*>(event.getData());
|
---|
587 |
|
---|
588 | // grab ownership
|
---|
589 | m_server->onGrabClipboard(info->m_id);
|
---|
590 |
|
---|
591 | // we now own the clipboard and it has not been sent to the server
|
---|
592 | m_ownClipboard[info->m_id] = true;
|
---|
593 | m_sentClipboard[info->m_id] = false;
|
---|
594 | m_timeClipboard[info->m_id] = 0;
|
---|
595 |
|
---|
596 | // if we're not the active screen then send the clipboard now,
|
---|
597 | // otherwise we'll wait until we leave.
|
---|
598 | if (!m_active) {
|
---|
599 | sendClipboard(info->m_id);
|
---|
600 | }
|
---|
601 | }
|
---|
602 |
|
---|
603 | void
|
---|
604 | CClient::handleHello(const CEvent&, void*)
|
---|
605 | {
|
---|
606 | SInt16 major, minor;
|
---|
607 | if (!CProtocolUtil::readf(m_stream, kMsgHello, &major, &minor)) {
|
---|
608 | sendConnectionFailedEvent("Protocol error from server");
|
---|
609 | cleanupTimer();
|
---|
610 | cleanupConnection();
|
---|
611 | return;
|
---|
612 | }
|
---|
613 |
|
---|
614 | // check versions
|
---|
615 | LOG((CLOG_DEBUG1 "got hello version %d.%d", major, minor));
|
---|
616 | if (major < kProtocolMajorVersion ||
|
---|
617 | (major == kProtocolMajorVersion && minor < kProtocolMinorVersion)) {
|
---|
618 | sendConnectionFailedEvent(XIncompatibleClient(major, minor).what());
|
---|
619 | cleanupTimer();
|
---|
620 | cleanupConnection();
|
---|
621 | return;
|
---|
622 | }
|
---|
623 |
|
---|
624 | // say hello back
|
---|
625 | LOG((CLOG_DEBUG1 "say hello version %d.%d", kProtocolMajorVersion, kProtocolMinorVersion));
|
---|
626 | CProtocolUtil::writef(m_stream, kMsgHelloBack,
|
---|
627 | kProtocolMajorVersion,
|
---|
628 | kProtocolMinorVersion, &m_name);
|
---|
629 |
|
---|
630 | // now connected but waiting to complete handshake
|
---|
631 | setupScreen();
|
---|
632 | cleanupTimer();
|
---|
633 |
|
---|
634 | // make sure we process any remaining messages later. we won't
|
---|
635 | // receive another event for already pending messages so we fake
|
---|
636 | // one.
|
---|
637 | if (m_stream->isReady()) {
|
---|
638 | EVENTQUEUE->addEvent(CEvent(IStream::getInputReadyEvent(),
|
---|
639 | m_stream->getEventTarget()));
|
---|
640 | }
|
---|
641 | }
|
---|
642 |
|
---|
643 | void
|
---|
644 | CClient::handleSuspend(const CEvent&, void*)
|
---|
645 | {
|
---|
646 | LOG((CLOG_INFO "suspend"));
|
---|
647 | m_suspended = true;
|
---|
648 | bool wasConnected = isConnected();
|
---|
649 | disconnect(NULL);
|
---|
650 | m_connectOnResume = wasConnected;
|
---|
651 | }
|
---|
652 |
|
---|
653 | void
|
---|
654 | CClient::handleResume(const CEvent&, void*)
|
---|
655 | {
|
---|
656 | LOG((CLOG_INFO "resume"));
|
---|
657 | m_suspended = false;
|
---|
658 | if (m_connectOnResume) {
|
---|
659 | m_connectOnResume = false;
|
---|
660 | connect();
|
---|
661 | }
|
---|
662 | }
|
---|