Mercurial > hg > Applications > TightVNC_orginal
annotate src/main/java/com/glavsoft/rfb/protocol/Protocol.java @ 52:472a9bcacb21 draft default tip
TightVNC 2.7.1.0
author | you@cr.ie.u-ryukyu.ac.jp |
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date | Wed, 07 Aug 2013 19:01:17 +0900 |
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rev | line source |
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52 | 1 // Copyright (C) 2010, 2011, 2012, 2013 GlavSoft LLC. |
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2 // All rights reserved. |
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3 // |
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4 //------------------------------------------------------------------------- |
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5 // This file is part of the TightVNC software. Please visit our Web site: |
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6 // |
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7 // http://www.tightvnc.com/ |
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8 // |
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9 // This program is free software; you can redistribute it and/or modify |
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10 // it under the terms of the GNU General Public License as published by |
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11 // the Free Software Foundation; either version 2 of the License, or |
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12 // (at your option) any later version. |
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13 // |
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14 // This program is distributed in the hope that it will be useful, |
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15 // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 // GNU General Public License for more details. |
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18 // |
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19 // You should have received a copy of the GNU General Public License along |
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20 // with this program; if not, write to the Free Software Foundation, Inc., |
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21 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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22 //------------------------------------------------------------------------- |
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23 // |
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24 |
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25 package com.glavsoft.rfb.protocol; |
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26 |
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27 import com.glavsoft.core.SettingsChangedEvent; |
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28 import com.glavsoft.exceptions.*; |
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29 import com.glavsoft.rfb.*; |
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30 import com.glavsoft.rfb.client.ClientToServerMessage; |
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31 import com.glavsoft.rfb.client.FramebufferUpdateRequestMessage; |
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32 import com.glavsoft.rfb.client.SetEncodingsMessage; |
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33 import com.glavsoft.rfb.client.SetPixelFormatMessage; |
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34 import com.glavsoft.rfb.encoding.PixelFormat; |
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35 import com.glavsoft.rfb.encoding.decoder.DecodersContainer; |
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36 import com.glavsoft.rfb.protocol.state.HandshakeState; |
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37 import com.glavsoft.rfb.protocol.state.ProtocolState; |
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38 import com.glavsoft.transport.Reader; |
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39 import com.glavsoft.transport.Writer; |
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40 |
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41 import java.util.logging.Logger; |
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42 |
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43 public class Protocol implements ProtocolContext, IChangeSettingsListener { |
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44 private ProtocolState state; |
52 | 45 private final Logger logger; |
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46 private final IPasswordRetriever passwordRetriever; |
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47 private final ProtocolSettings settings; |
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48 private int fbWidth; |
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49 private int fbHeight; |
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50 private PixelFormat pixelFormat; |
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51 private final Reader reader; |
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52 private final Writer writer; |
52 | 53 private String remoteDesktopName; |
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54 private MessageQueue messageQueue; |
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55 private final DecodersContainer decoders; |
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56 private SenderTask senderTask; |
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57 private ReceiverTask receiverTask; |
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58 private IRfbSessionListener rfbSessionListener; |
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59 private IRepaintController repaintController; |
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60 private PixelFormat serverPixelFormat; |
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61 private Thread senderThread; |
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62 private Thread receiverThread; |
52 | 63 private boolean isTight; |
64 private String protocolVersion; | |
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65 |
52 | 66 public Protocol(Reader reader, Writer writer, |
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67 IPasswordRetriever passwordRetriever, ProtocolSettings settings) { |
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68 this.reader = reader; |
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69 this.writer = writer; |
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70 this.passwordRetriever = passwordRetriever; |
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71 this.settings = settings; |
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72 decoders = new DecodersContainer(); |
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73 decoders.instantiateDecodersWhenNeeded(settings.encodings); |
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74 state = new HandshakeState(this); |
52 | 75 logger = Logger.getLogger(getClass().getName()); |
76 } | |
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77 |
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78 @Override |
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79 public void changeStateTo(ProtocolState state) { |
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80 this.state = state; |
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81 } |
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82 |
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83 public void handshake() throws UnsupportedProtocolVersionException, UnsupportedSecurityTypeException, |
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84 AuthenticationFailedException, TransportException, FatalException { |
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85 while (state.next()) { |
52 | 86 // continue; |
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87 } |
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88 this.messageQueue = new MessageQueue(); |
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89 } |
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90 |
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91 @Override |
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92 public PixelFormat getPixelFormat() { |
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93 return pixelFormat; |
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94 } |
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95 |
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96 @Override |
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97 public void setPixelFormat(PixelFormat pixelFormat) { |
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98 this.pixelFormat = pixelFormat; |
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99 if (repaintController != null) { |
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100 repaintController.setPixelFormat(pixelFormat); |
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101 } |
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102 } |
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103 |
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104 @Override |
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105 public String getRemoteDesktopName() { |
52 | 106 return remoteDesktopName; |
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107 } |
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108 |
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109 @Override |
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110 public void setRemoteDesktopName(String name) { |
52 | 111 remoteDesktopName = name; |
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112 } |
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113 |
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114 @Override |
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115 public int getFbWidth() { |
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116 return fbWidth; |
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117 } |
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118 |
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119 @Override |
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120 public void setFbWidth(int fbWidth) { |
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121 this.fbWidth = fbWidth; |
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122 } |
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123 |
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124 @Override |
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125 public int getFbHeight() { |
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126 return fbHeight; |
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127 } |
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128 |
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129 @Override |
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130 public void setFbHeight(int fbHeight) { |
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131 this.fbHeight = fbHeight; |
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132 } |
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133 |
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134 @Override |
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135 public IPasswordRetriever getPasswordRetriever() { |
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136 return passwordRetriever; |
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137 } |
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138 |
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139 @Override |
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140 public ProtocolSettings getSettings() { |
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141 return settings; |
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142 } |
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143 |
52 | 144 @Override |
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145 public Writer getWriter() { |
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146 return writer; |
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147 } |
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148 |
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149 @Override |
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150 public Reader getReader() { |
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151 return reader; |
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152 } |
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153 |
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154 /** |
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155 * Following the server initialisation message it's up to the client to send |
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156 * whichever protocol messages it wants. Typically it will send a |
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157 * SetPixelFormat message and a SetEncodings message, followed by a |
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158 * FramebufferUpdateRequest. From then on the server will send |
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159 * FramebufferUpdate messages in response to the client's |
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160 * FramebufferUpdateRequest messages. The client should send |
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161 * FramebufferUpdateRequest messages with incremental set to true when it has |
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162 * finished processing one FramebufferUpdate and is ready to process another. |
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163 * With a fast client, the rate at which FramebufferUpdateRequests are sent |
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164 * should be regulated to avoid hogging the network. |
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165 */ |
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166 public void startNormalHandling(IRfbSessionListener rfbSessionListener, |
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167 IRepaintController repaintController, ClipboardController clipboardController) { |
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168 this.rfbSessionListener = rfbSessionListener; |
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169 this.repaintController = repaintController; |
52 | 170 // if (settings.getColorDepth() == 0) { |
171 // settings.setColorDepth(pixelFormat.depth); // the same the server sent when not initialized yet | |
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172 // } |
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173 serverPixelFormat = pixelFormat; |
52 | 174 correctServerPixelFormat(); |
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175 setPixelFormat(createPixelFormat(settings)); |
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176 sendMessage(new SetPixelFormatMessage(pixelFormat)); |
52 | 177 logger.fine("sent: " + pixelFormat); |
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178 |
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179 sendSupportedEncodingsMessage(settings); |
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180 settings.addListener(this); // to support pixel format (color depth), and encodings changes |
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181 settings.addListener(repaintController); |
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182 |
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183 sendRefreshMessage(); |
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184 senderTask = new SenderTask(messageQueue, writer, this); |
52 | 185 senderThread = new Thread(senderTask, "RfbSenderTask"); |
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186 senderThread.start(); |
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187 decoders.resetDecoders(); |
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188 receiverTask = new ReceiverTask( |
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189 reader, repaintController, |
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190 clipboardController, |
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191 decoders, this); |
52 | 192 receiverThread = new Thread(receiverTask, "RfbReceiverTask"); |
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193 receiverThread.start(); |
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194 } |
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195 |
52 | 196 private void correctServerPixelFormat() { |
197 // correct true color flag - we don't support color maps, so always set it up | |
198 serverPixelFormat.trueColourFlag = 1; | |
199 // correct .depth to use actual depth 24 instead of incorrect 32, used by ex. UltraVNC server, that cause | |
200 // protocol incompatibility in ZRLE encoding | |
201 final long significant = serverPixelFormat.redMax << serverPixelFormat.redShift | | |
202 serverPixelFormat.greenMax << serverPixelFormat.greenShift | | |
203 serverPixelFormat.blueMax << serverPixelFormat.blueShift; | |
204 if (32 == serverPixelFormat.bitsPerPixel && | |
205 ((significant & 0x00ff000000L) == 0 || (significant & 0x000000ffL) == 0) && | |
206 32 == serverPixelFormat.depth) { | |
207 serverPixelFormat.depth = 24; | |
208 } | |
209 } | |
210 | |
211 @Override | |
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212 public void sendMessage(ClientToServerMessage message) { |
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213 messageQueue.put(message); |
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214 } |
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215 |
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216 private void sendSupportedEncodingsMessage(ProtocolSettings settings) { |
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217 decoders.instantiateDecodersWhenNeeded(settings.encodings); |
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218 SetEncodingsMessage encodingsMessage = new SetEncodingsMessage(settings.encodings); |
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219 sendMessage(encodingsMessage); |
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220 logger.fine("sent: " + encodingsMessage.toString()); |
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221 } |
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222 |
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223 /** |
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224 * create pixel format by bpp |
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225 */ |
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226 private PixelFormat createPixelFormat(ProtocolSettings settings) { |
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227 int serverBigEndianFlag = serverPixelFormat.bigEndianFlag; |
52 | 228 switch (settings.getColorDepth()) { |
229 case ProtocolSettings.COLOR_DEPTH_24: | |
230 return PixelFormat.create24bitColorDepthPixelFormat(serverBigEndianFlag); | |
231 case ProtocolSettings.COLOR_DEPTH_16: | |
232 return PixelFormat.create16bitColorDepthPixelFormat(serverBigEndianFlag); | |
233 case ProtocolSettings.COLOR_DEPTH_8: | |
234 return PixelFormat.create8bitColorDepthBGRPixelFormat(serverBigEndianFlag); | |
235 case ProtocolSettings.COLOR_DEPTH_6: | |
236 return PixelFormat.create6bitColorDepthPixelFormat(serverBigEndianFlag); | |
237 case ProtocolSettings.COLOR_DEPTH_3: | |
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238 return PixelFormat.create3bppPixelFormat(serverBigEndianFlag); |
52 | 239 case ProtocolSettings.COLOR_DEPTH_SERVER_SETTINGS: |
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240 return serverPixelFormat; |
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241 default: |
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242 // unsupported bpp, use default |
52 | 243 return PixelFormat.create24bitColorDepthPixelFormat(serverBigEndianFlag); |
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244 } |
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245 } |
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246 |
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247 @Override |
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248 public void settingsChanged(SettingsChangedEvent e) { |
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249 ProtocolSettings settings = (ProtocolSettings) e.getSource(); |
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250 if (settings.isChangedEncodings()) { |
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251 sendSupportedEncodingsMessage(settings); |
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252 } |
52 | 253 if (settings.isChangedColorDepth() && receiverTask != null) { |
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254 receiverTask.queueUpdatePixelFormat(createPixelFormat(settings)); |
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255 } |
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256 } |
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257 |
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258 @Override |
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259 public void sendRefreshMessage() { |
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260 sendMessage(new FramebufferUpdateRequestMessage(0, 0, fbWidth, fbHeight, false)); |
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261 logger.fine("sent: full FB Refresh"); |
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262 } |
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263 |
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264 @Override |
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265 public void cleanUpSession(String message) { |
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266 cleanUpSession(); |
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267 rfbSessionListener.rfbSessionStopped(message); |
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268 } |
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269 |
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270 public synchronized void cleanUpSession() { |
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271 if (senderTask != null) { senderTask.stopTask(); } |
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272 if (receiverTask != null) { receiverTask.stopTask(); } |
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273 if (senderTask != null) { |
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274 try { |
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275 senderThread.join(1000); |
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276 } catch (InterruptedException e) { |
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277 // nop |
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278 } |
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279 senderTask = null; |
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280 } |
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281 if (receiverTask != null) { |
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282 try { |
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283 receiverThread.join(1000); |
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284 } catch (InterruptedException e) { |
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285 // nop |
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286 } |
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287 receiverTask = null; |
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288 } |
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289 } |
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290 |
52 | 291 @Override |
292 public void setTight(boolean isTight) { | |
293 this.isTight = isTight; | |
294 } | |
295 | |
296 @Override | |
297 public boolean isTight() { | |
298 return isTight; | |
299 } | |
300 | |
301 @Override | |
302 public void setProtocolVersion(String protocolVersion) { | |
303 this.protocolVersion = protocolVersion; | |
304 } | |
305 | |
306 @Override | |
307 public String getProtocolVersion() { | |
308 return protocolVersion; | |
309 } | |
310 | |
0
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311 } |