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1 //
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2 // Copyright (C) 2001-2004 HorizonLive.com, Inc. All Rights Reserved.
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3 // Copyright (C) 2002 Constantin Kaplinsky. All Rights Reserved.
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4 // Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
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5 //
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6 // This is free software; you can redistribute it and/or modify
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7 // it under the terms of the GNU General Public License as published by
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8 // the Free Software Foundation; either version 2 of the License, or
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9 // (at your option) any later version.
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10 //
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11 // This software is distributed in the hope that it will be useful,
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12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 // GNU General Public License for more details.
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15 //
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16 // You should have received a copy of the GNU General Public License
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17 // along with this software; if not, write to the Free Software
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18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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19 // USA.
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20 //
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21
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22 //
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23 // VncViewer.java - the VNC viewer applet. This class mainly just sets up the
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24 // user interface, leaving it to the VncCanvas to do the actual rendering of
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25 // a VNC desktop.
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26 //
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27
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28 import java.awt.*;
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29 import java.awt.event.*;
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30 import java.io.*;
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31 import java.net.*;
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32
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33 public class VncViewer extends java.applet.Applet
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34 implements java.lang.Runnable, WindowListener {
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35
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36 boolean inAnApplet = true;
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37 boolean inSeparateFrame = false;
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38
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39 //
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40 // main() is called when run as a java program from the command line.
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41 // It simply runs the applet inside a newly-created frame.
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42 //
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43
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44 public static void main(String[] argv) {
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45 VncViewer v = new VncViewer();
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46 v.mainArgs = argv;
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47 v.inAnApplet = false;
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48 v.inSeparateFrame = true;
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49 /*
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50 if(argv.length > 1){
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51 v.host = argv[0];
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52 v.port = Integer.parseInt(argv[1]);
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53 }
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54 */
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55 v.init();
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56 v.start();
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57 }
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58
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59 String[] mainArgs;
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60
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61 RfbProto rfb;
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62 Thread rfbThread;
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63
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64 Frame vncFrame;
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65 Container vncContainer;
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66 ScrollPane desktopScrollPane;
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67 GridBagLayout gridbag;
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68 ButtonPanel buttonPanel;
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69 Label connStatusLabel;
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70 VncCanvas vc;
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71 OptionsFrame options;
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72 ClipboardFrame clipboard;
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73 RecordingFrame rec;
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74
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75 // Control session recording.
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76 Object recordingSync;
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77 String sessionFileName;
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78 boolean recordingActive;
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79 boolean recordingStatusChanged;
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80 String cursorUpdatesDef;
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81 String eightBitColorsDef;
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82
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83 // Variables read from parameter values.
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84 String socketFactory;
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85 String host;
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86 int port;
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87 String passwordParam;
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88 boolean showControls;
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89 boolean offerRelogin;
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90 boolean showOfflineDesktop;
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91 int deferScreenUpdates;
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92 int deferCursorUpdates;
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93 int deferUpdateRequests;
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94 int debugStatsExcludeUpdates;
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95 int debugStatsMeasureUpdates;
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96
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97 // Reference to this applet for inter-applet communication.
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98 public static java.applet.Applet refApplet;
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99
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100 //
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101 // init()
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102 //
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103
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104 public void init() {
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105
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106 readParameters();
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107
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108 refApplet = this;
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109
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110 if (inSeparateFrame) {
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111 vncFrame = new Frame("TightVNC");
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112 if (!inAnApplet) {
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113 vncFrame.add("Center", this);
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114 }
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115 vncContainer = vncFrame;
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116 } else {
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117 vncContainer = this;
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118 }
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119
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120 recordingSync = new Object();
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121
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122 options = new OptionsFrame(this);
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123 clipboard = new ClipboardFrame(this);
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124 if (RecordingFrame.checkSecurity())
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125 rec = new RecordingFrame(this);
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126
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127 sessionFileName = null;
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128 recordingActive = false;
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129 recordingStatusChanged = false;
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130 cursorUpdatesDef = null;
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131 eightBitColorsDef = null;
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132
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133 if (inSeparateFrame)
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134 vncFrame.addWindowListener(this);
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135
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136 rfbThread = new Thread(this);
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137 rfbThread.start();
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138 }
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139
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140 public void update(Graphics g) {
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141 }
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142
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143 //
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144 // run() - executed by the rfbThread to deal with the RFB socket.
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145 //
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146
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147 public void run() {
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148
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149 gridbag = new GridBagLayout();
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150 vncContainer.setLayout(gridbag);
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151
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152 GridBagConstraints gbc = new GridBagConstraints();
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153 gbc.gridwidth = GridBagConstraints.REMAINDER;
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154 gbc.anchor = GridBagConstraints.NORTHWEST;
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155
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156 if (showControls) {
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157 buttonPanel = new ButtonPanel(this);
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158 gridbag.setConstraints(buttonPanel, gbc);
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159 vncContainer.add(buttonPanel);
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160 }
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161
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162 try {
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163 connectAndAuthenticate();
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164 doProtocolInitialisation();
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165
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166 // FIXME: Use auto-scaling not only in a separate frame.
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167 if (options.autoScale && inSeparateFrame) {
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168 Dimension screenSize;
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169 try {
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170 screenSize = vncContainer.getToolkit().getScreenSize();
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171 } catch (Exception e) {
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172 screenSize = new Dimension(0, 0);
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173 }
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174 createCanvas(screenSize.width - 32, screenSize.height - 32);
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175 } else {
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176 createCanvas(0, 0);
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177 }
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178
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179 gbc.weightx = 1.0;
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180 gbc.weighty = 1.0;
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181
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182 if (inSeparateFrame) {
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183
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184 // Create a panel which itself is resizeable and can hold
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185 // non-resizeable VncCanvas component at the top left corner.
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186 Panel canvasPanel = new Panel();
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187 canvasPanel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
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188 canvasPanel.add(vc);
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189
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190 // Create a ScrollPane which will hold a panel with VncCanvas
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191 // inside.
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192 desktopScrollPane = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
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193 gbc.fill = GridBagConstraints.BOTH;
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194 gridbag.setConstraints(desktopScrollPane, gbc);
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195 desktopScrollPane.add(canvasPanel);
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196
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197 // Finally, add our ScrollPane to the Frame window.
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198 vncFrame.add(desktopScrollPane);
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199 vncFrame.setTitle(rfb.desktopName);
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200 vncFrame.pack();
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201 vc.resizeDesktopFrame();
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202
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203 } else {
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204
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205 // Just add the VncCanvas component to the Applet.
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206 gridbag.setConstraints(vc, gbc);
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207 add(vc);
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208 validate();
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209
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210 }
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211
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212 if (showControls)
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213 buttonPanel.enableButtons();
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214
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215 moveFocusToDesktop();
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216 processNormalProtocol();//main loop
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217
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218 } catch (NoRouteToHostException e) {
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219 fatalError("Network error: no route to server: " + host, e);
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220 } catch (UnknownHostException e) {
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221 fatalError("Network error: server name unknown: " + host, e);
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222 } catch (ConnectException e) {
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223 fatalError("Network error: could not connect to server: " +
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224 host + ":" + port, e);
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225 } catch (EOFException e) {
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226 if (showOfflineDesktop) {
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227 e.printStackTrace();
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228 System.out.println("Network error: remote side closed connection");
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229 if (vc != null) {
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230 vc.enableInput(false);
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231 }
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232 if (inSeparateFrame) {
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233 vncFrame.setTitle(rfb.desktopName + " [disconnected]");
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234 }
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235 if (rfb != null && !rfb.closed())
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236 rfb.close();
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237 if (showControls && buttonPanel != null) {
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238 buttonPanel.disableButtonsOnDisconnect();
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239 if (inSeparateFrame) {
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240 vncFrame.pack();
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241 } else {
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242 validate();
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243 }
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244 }
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245 } else {
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246 fatalError("Network error: remote side closed connection", e);
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247 }
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248 } catch (IOException e) {
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249 String str = e.getMessage();
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250 if (str != null && str.length() != 0) {
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251 fatalError("Network Error: " + str, e);
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252 } else {
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253 fatalError(e.toString(), e);
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254 }
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255 } catch (Exception e) {
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256 String str = e.getMessage();
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257 if (str != null && str.length() != 0) {
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258 fatalError("Error: " + str, e);
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259 } else {
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260 fatalError(e.toString(), e);
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261 }
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262 }
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263
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264 }
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265
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266 //
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267 // Create a VncCanvas instance.
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268 //
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269
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270 void createCanvas(int maxWidth, int maxHeight) throws IOException {
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271 // Determine if Java 2D API is available and use a special
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272 // version of VncCanvas if it is present.
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273 vc = null;
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274 try {
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275 // This throws ClassNotFoundException if there is no Java 2D API.
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276 Class cl = Class.forName("java.awt.Graphics2D");
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277 // If we could load Graphics2D class, then we can use VncCanvas2D.
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278 cl = Class.forName("VncCanvas2");
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279 Class[] argClasses = { this.getClass(), Integer.TYPE, Integer.TYPE };
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280 java.lang.reflect.Constructor cstr = cl.getConstructor(argClasses);
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281 Object[] argObjects =
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282 { this, new Integer(maxWidth), new Integer(maxHeight) };
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283 vc = (VncCanvas)cstr.newInstance(argObjects);
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284 } catch (Exception e) {
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285 System.out.println("Warning: Java 2D API is not available");
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286 }
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287
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288 // If we failed to create VncCanvas2D, use old VncCanvas.
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289 if (vc == null)
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290 vc = new VncCanvas(this, maxWidth, maxHeight);
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291 }
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292
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293
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294 //
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295 // Process RFB socket messages.
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296 // If the rfbThread is being stopped, ignore any exceptions,
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297 // otherwise rethrow the exception so it can be handled.
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298 //
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299
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300 void processNormalProtocol() throws Exception {
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301 try {
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302 vc.processNormalProtocol();//main loop
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303 } catch (Exception e) {
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304 if (rfbThread == null) {
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305 System.out.println("Ignoring RFB socket exceptions" +
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306 " because applet is stopping");
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307 } else {
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308 throw e;
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309 }
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310 }
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311 }
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312
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313
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314 //
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315 // Connect to the RFB server and authenticate the user.
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316 //
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317
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318 void connectAndAuthenticate() throws Exception
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319 {
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320 showConnectionStatus("Initializing...");
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321 if (inSeparateFrame) {
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322 vncFrame.pack();
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3
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323 vncFrame.setVisible(true);
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0
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324 } else {
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325 validate();
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326 }
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327
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328 showConnectionStatus("Connecting to " + host + ", port " + port + "...");
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329
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330 rfb = new RfbProto(host, port, this);
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331 showConnectionStatus("Connected to server");
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332
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333 rfb.readVersionMsg();
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334 showConnectionStatus("RFB server supports protocol version " +
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335 rfb.serverMajor + "." + rfb.serverMinor);
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336
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337 rfb.writeVersionMsg();
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338 showConnectionStatus("Using RFB protocol version " +
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339 rfb.clientMajor + "." + rfb.clientMinor);
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340
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341 int secType = rfb.negotiateSecurity();
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342 int authType;
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343 if (secType == RfbProto.SecTypeTight) {
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344 showConnectionStatus("Enabling TightVNC protocol extensions");
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345 rfb.setupTunneling();
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346 authType = rfb.negotiateAuthenticationTight();
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347 } else {
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348 authType = secType;
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349 }
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350
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351 switch (authType) {
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352 case RfbProto.AuthNone:
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353 showConnectionStatus("No authentication needed");
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354 rfb.authenticateNone();
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355 break;
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356 case RfbProto.AuthVNC:
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357 showConnectionStatus("Performing standard VNC authentication");
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358 if (passwordParam != null) {
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359 rfb.authenticateVNC(passwordParam);
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360 } else {
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361 String pw = askPassword();
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362 rfb.authenticateVNC(pw);
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363 }
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364 break;
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365 default:
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366 throw new Exception("Unknown authentication scheme " + authType);
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367 }
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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 // Show a message describing the connection status.
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373 // To hide the connection status label, use (msg == null).
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374 //
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375
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376 void showConnectionStatus(String msg)
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377 {
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378 if (msg == null) {
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379 if (vncContainer.isAncestorOf(connStatusLabel)) {
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380 vncContainer.remove(connStatusLabel);
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381 }
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382 return;
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383 }
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384
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385 System.out.println(msg);
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386
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387 if (connStatusLabel == null) {
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388 connStatusLabel = new Label("Status: " + msg);
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389 connStatusLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));
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390 } else {
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391 connStatusLabel.setText("Status: " + msg);
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392 }
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393
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394 if (!vncContainer.isAncestorOf(connStatusLabel)) {
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395 GridBagConstraints gbc = new GridBagConstraints();
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396 gbc.gridwidth = GridBagConstraints.REMAINDER;
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397 gbc.fill = GridBagConstraints.HORIZONTAL;
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398 gbc.anchor = GridBagConstraints.NORTHWEST;
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399 gbc.weightx = 1.0;
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400 gbc.weighty = 1.0;
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401 gbc.insets = new Insets(20, 30, 20, 30);
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402 gridbag.setConstraints(connStatusLabel, gbc);
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403 vncContainer.add(connStatusLabel);
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404 }
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405
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406 if (inSeparateFrame) {
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407 vncFrame.pack();
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408 } else {
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409 validate();
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410 }
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411 }
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412
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413
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414 //
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415 // Show an authentication panel.
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416 //
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417
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418 String askPassword() throws Exception
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419 {
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420 showConnectionStatus(null);
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421
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422 AuthPanel authPanel = new AuthPanel(this);
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423
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424 GridBagConstraints gbc = new GridBagConstraints();
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425 gbc.gridwidth = GridBagConstraints.REMAINDER;
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426 gbc.anchor = GridBagConstraints.NORTHWEST;
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427 gbc.weightx = 1.0;
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428 gbc.weighty = 1.0;
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429 gbc.ipadx = 100;
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430 gbc.ipady = 50;
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431 gridbag.setConstraints(authPanel, gbc);
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432 vncContainer.add(authPanel);
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433
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434 if (inSeparateFrame) {
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435 vncFrame.pack();
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436 } else {
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437 validate();
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438 }
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439
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440 authPanel.moveFocusToDefaultField();
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441 String pw = authPanel.getPassword();
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442 vncContainer.remove(authPanel);
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443
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|
444 return pw;
|
|
|
445 }
|
|
|
446
|
|
|
447
|
|
|
448 //
|
|
|
449 // Do the rest of the protocol initialisation.
|
|
|
450 //
|
|
|
451
|
|
|
452 void doProtocolInitialisation() throws IOException
|
|
|
453 {
|
|
|
454 rfb.writeClientInit();
|
|
|
455 rfb.readServerInit();
|
|
|
456
|
|
|
457 System.out.println("Desktop name is " + rfb.desktopName);
|
|
|
458 System.out.println("Desktop size is " + rfb.framebufferWidth + " x " +
|
|
|
459 rfb.framebufferHeight);
|
|
|
460
|
|
|
461 setEncodings();
|
|
|
462
|
|
|
463 showConnectionStatus(null);
|
|
|
464 }
|
|
|
465
|
|
|
466
|
|
|
467 //
|
|
|
468 // Send current encoding list to the RFB server.
|
|
|
469 //
|
|
|
470
|
|
|
471 int[] encodingsSaved;
|
|
|
472 int nEncodingsSaved;
|
|
|
473
|
|
|
474 void setEncodings() { setEncodings(false); }
|
|
|
475 void autoSelectEncodings() { setEncodings(true); }
|
|
|
476
|
|
|
477 void setEncodings(boolean autoSelectOnly) {
|
|
|
478 if (options == null || rfb == null || !rfb.inNormalProtocol)
|
|
|
479 return;
|
|
|
480
|
|
|
481 int preferredEncoding = options.preferredEncoding;
|
|
|
482 if (preferredEncoding == -1) {
|
|
|
483 long kbitsPerSecond = rfb.kbitsPerSecond();
|
|
|
484 if (nEncodingsSaved < 1) {
|
|
|
485 // Choose Tight or ZRLE encoding for the very first update.
|
|
|
486 System.out.println("Using Tight/ZRLE encodings");
|
|
|
487 preferredEncoding = RfbProto.EncodingTight;
|
|
|
488 } else if (kbitsPerSecond > 2000 &&
|
|
|
489 encodingsSaved[0] != RfbProto.EncodingHextile) {
|
|
|
490 // Switch to Hextile if the connection speed is above 2Mbps.
|
|
|
491 System.out.println("Throughput " + kbitsPerSecond +
|
|
|
492 " kbit/s - changing to Hextile encoding");
|
|
|
493 preferredEncoding = RfbProto.EncodingHextile;
|
|
|
494 } else if (kbitsPerSecond < 1000 &&
|
|
|
495 encodingsSaved[0] != RfbProto.EncodingTight) {
|
|
|
496 // Switch to Tight/ZRLE if the connection speed is below 1Mbps.
|
|
|
497 System.out.println("Throughput " + kbitsPerSecond +
|
|
|
498 " kbit/s - changing to Tight/ZRLE encodings");
|
|
|
499 preferredEncoding = RfbProto.EncodingTight;
|
|
|
500 } else {
|
|
|
501 // Don't change the encoder.
|
|
|
502 if (autoSelectOnly)
|
|
|
503 return;
|
|
|
504 preferredEncoding = encodingsSaved[0];
|
|
|
505 }
|
|
|
506 } else {
|
|
|
507 // Auto encoder selection is not enabled.
|
|
|
508 if (autoSelectOnly)
|
|
|
509 return;
|
|
|
510 }
|
|
|
511
|
|
|
512 int[] encodings = new int[20];
|
|
|
513 int nEncodings = 0;
|
|
|
514
|
|
|
515 encodings[nEncodings++] = preferredEncoding;
|
|
|
516 if (options.useCopyRect) {
|
|
|
517 encodings[nEncodings++] = RfbProto.EncodingCopyRect;
|
|
|
518 }
|
|
|
519
|
|
|
520 if (preferredEncoding != RfbProto.EncodingTight) {
|
|
|
521 encodings[nEncodings++] = RfbProto.EncodingTight;
|
|
|
522 }
|
|
|
523 if (preferredEncoding != RfbProto.EncodingZRLE) {
|
|
|
524 encodings[nEncodings++] = RfbProto.EncodingZRLE;
|
|
|
525 }
|
|
|
526 if (preferredEncoding != RfbProto.EncodingHextile) {
|
|
|
527 encodings[nEncodings++] = RfbProto.EncodingHextile;
|
|
|
528 }
|
|
|
529 if (preferredEncoding != RfbProto.EncodingZlib) {
|
|
|
530 encodings[nEncodings++] = RfbProto.EncodingZlib;
|
|
|
531 }
|
|
|
532 if (preferredEncoding != RfbProto.EncodingCoRRE) {
|
|
|
533 encodings[nEncodings++] = RfbProto.EncodingCoRRE;
|
|
|
534 }
|
|
|
535 if (preferredEncoding != RfbProto.EncodingRRE) {
|
|
|
536 encodings[nEncodings++] = RfbProto.EncodingRRE;
|
|
|
537 }
|
|
|
538
|
|
|
539 if (options.compressLevel >= 0 && options.compressLevel <= 9) {
|
|
|
540 encodings[nEncodings++] =
|
|
|
541 RfbProto.EncodingCompressLevel0 + options.compressLevel;
|
|
|
542 }
|
|
|
543 if (options.jpegQuality >= 0 && options.jpegQuality <= 9) {
|
|
|
544 encodings[nEncodings++] =
|
|
|
545 RfbProto.EncodingQualityLevel0 + options.jpegQuality;
|
|
|
546 }
|
|
|
547
|
|
|
548 if (options.requestCursorUpdates) {
|
|
|
549 encodings[nEncodings++] = RfbProto.EncodingXCursor;
|
|
|
550 encodings[nEncodings++] = RfbProto.EncodingRichCursor;
|
|
|
551 if (!options.ignoreCursorUpdates)
|
|
|
552 encodings[nEncodings++] = RfbProto.EncodingPointerPos;
|
|
|
553 }
|
|
|
554
|
|
|
555 encodings[nEncodings++] = RfbProto.EncodingLastRect;
|
|
|
556 encodings[nEncodings++] = RfbProto.EncodingNewFBSize;
|
|
|
557
|
|
|
558 boolean encodingsWereChanged = false;
|
|
|
559 if (nEncodings != nEncodingsSaved) {
|
|
|
560 encodingsWereChanged = true;
|
|
|
561 } else {
|
|
|
562 for (int i = 0; i < nEncodings; i++) {
|
|
|
563 if (encodings[i] != encodingsSaved[i]) {
|
|
|
564 encodingsWereChanged = true;
|
|
|
565 break;
|
|
|
566 }
|
|
|
567 }
|
|
|
568 }
|
|
|
569
|
|
|
570 if (encodingsWereChanged) {
|
|
|
571 try {
|
|
|
572 rfb.writeSetEncodings(encodings, nEncodings);
|
|
|
573 if (vc != null) {
|
|
|
574 vc.softCursorFree();
|
|
|
575 }
|
|
|
576 } catch (Exception e) {
|
|
|
577 e.printStackTrace();
|
|
|
578 }
|
|
|
579 encodingsSaved = encodings;
|
|
|
580 nEncodingsSaved = nEncodings;
|
|
|
581 }
|
|
|
582 }
|
|
|
583
|
|
|
584
|
|
|
585 //
|
|
|
586 // setCutText() - send the given cut text to the RFB server.
|
|
|
587 //
|
|
|
588
|
|
|
589 void setCutText(String text) {
|
|
|
590 try {
|
|
|
591 if (rfb != null && rfb.inNormalProtocol) {
|
|
|
592 rfb.writeClientCutText(text);
|
|
|
593 }
|
|
|
594 } catch (Exception e) {
|
|
|
595 e.printStackTrace();
|
|
|
596 }
|
|
|
597 }
|
|
|
598
|
|
|
599
|
|
|
600 //
|
|
|
601 // Order change in session recording status. To stop recording, pass
|
|
|
602 // null in place of the fname argument.
|
|
|
603 //
|
|
|
604
|
|
|
605 void setRecordingStatus(String fname) {
|
|
|
606 synchronized(recordingSync) {
|
|
|
607 sessionFileName = fname;
|
|
|
608 recordingStatusChanged = true;
|
|
|
609 }
|
|
|
610 }
|
|
|
611
|
|
|
612 //
|
|
|
613 // Start or stop session recording. Returns true if this method call
|
|
|
614 // causes recording of a new session.
|
|
|
615 //
|
|
|
616
|
|
|
617 boolean checkRecordingStatus() throws IOException {
|
|
|
618 synchronized(recordingSync) {
|
|
|
619 if (recordingStatusChanged) {
|
|
|
620 recordingStatusChanged = false;
|
|
|
621 if (sessionFileName != null) {
|
|
|
622 startRecording();
|
|
|
623 return true;
|
|
|
624 } else {
|
|
|
625 stopRecording();
|
|
|
626 }
|
|
|
627 }
|
|
|
628 }
|
|
|
629 return false;
|
|
|
630 }
|
|
|
631
|
|
|
632 //
|
|
|
633 // Start session recording.
|
|
|
634 //
|
|
|
635
|
|
|
636 protected void startRecording() throws IOException {
|
|
|
637 synchronized(recordingSync) {
|
|
|
638 if (!recordingActive) {
|
|
|
639 // Save settings to restore them after recording the session.
|
|
|
640 cursorUpdatesDef =
|
|
|
641 options.choices[options.cursorUpdatesIndex].getSelectedItem();
|
|
|
642 eightBitColorsDef =
|
|
|
643 options.choices[options.eightBitColorsIndex].getSelectedItem();
|
|
|
644 // Set options to values suitable for recording.
|
|
|
645 options.choices[options.cursorUpdatesIndex].select("Disable");
|
|
|
646 options.choices[options.cursorUpdatesIndex].setEnabled(false);
|
|
|
647 options.setEncodings();
|
|
|
648 options.choices[options.eightBitColorsIndex].select("No");
|
|
|
649 options.choices[options.eightBitColorsIndex].setEnabled(false);
|
|
|
650 options.setColorFormat();
|
|
|
651 } else {
|
|
|
652 rfb.closeSession();
|
|
|
653 }
|
|
|
654
|
|
|
655 System.out.println("Recording the session in " + sessionFileName);
|
|
|
656 rfb.startSession(sessionFileName);
|
|
|
657 recordingActive = true;
|
|
|
658 }
|
|
|
659 }
|
|
|
660
|
|
|
661 //
|
|
|
662 // Stop session recording.
|
|
|
663 //
|
|
|
664
|
|
|
665 protected void stopRecording() throws IOException {
|
|
|
666 synchronized(recordingSync) {
|
|
|
667 if (recordingActive) {
|
|
|
668 // Restore options.
|
|
|
669 options.choices[options.cursorUpdatesIndex].select(cursorUpdatesDef);
|
|
|
670 options.choices[options.cursorUpdatesIndex].setEnabled(true);
|
|
|
671 options.setEncodings();
|
|
|
672 options.choices[options.eightBitColorsIndex].select(eightBitColorsDef);
|
|
|
673 options.choices[options.eightBitColorsIndex].setEnabled(true);
|
|
|
674 options.setColorFormat();
|
|
|
675
|
|
|
676 rfb.closeSession();
|
|
|
677 System.out.println("Session recording stopped.");
|
|
|
678 }
|
|
|
679 sessionFileName = null;
|
|
|
680 recordingActive = false;
|
|
|
681 }
|
|
|
682 }
|
|
|
683
|
|
|
684
|
|
|
685 //
|
|
|
686 // readParameters() - read parameters from the html source or from the
|
|
|
687 // command line. On the command line, the arguments are just a sequence of
|
|
|
688 // param_name/param_value pairs where the names and values correspond to
|
|
|
689 // those expected in the html applet tag source.
|
|
|
690 //
|
|
|
691
|
|
|
692 void readParameters() {
|
|
|
693 // host = readParameter("HOST", !inAnApplet);
|
|
|
694 if(mainArgs.length > 0) host = mainArgs[0];
|
|
|
695 else host = "hades.cr.ie.u-ryukyu.ac.jp";
|
|
|
696 /*
|
|
|
697 if (host == null) {
|
|
|
698 host = getCodeBase().getHost();
|
|
|
699 if (host.equals("")) {
|
|
|
700 fatalError("HOST parameter not specified");
|
|
|
701 }
|
|
|
702 }
|
|
|
703 */
|
|
|
704
|
|
|
705 // port = readIntParameter("PORT", 5900);
|
|
|
706 if(mainArgs.length > 1) port = Integer.parseInt(mainArgs[1]);
|
|
|
707 else port = 5900;
|
|
|
708 // Read "ENCPASSWORD" or "PASSWORD" parameter if specified.
|
|
|
709 readPasswordParameters();
|
|
|
710
|
|
|
711 String str;
|
|
|
712 if (inAnApplet) {
|
|
|
713 str = readParameter("Open New Window", false);
|
|
|
714 if (str != null && str.equalsIgnoreCase("Yes"))
|
|
|
715 inSeparateFrame = true;
|
|
|
716 }
|
|
|
717
|
|
|
718 // "Show Controls" set to "No" disables button panel.
|
|
|
719 showControls = true;
|
|
|
720 str = readParameter("Show Controls", false);
|
|
|
721 if (str != null && str.equalsIgnoreCase("No"))
|
|
|
722 showControls = false;
|
|
|
723
|
|
|
724 // "Offer Relogin" set to "No" disables "Login again" and "Close
|
|
|
725 // window" buttons under error messages in applet mode.
|
|
|
726 offerRelogin = true;
|
|
|
727 str = readParameter("Offer Relogin", false);
|
|
|
728 if (str != null && str.equalsIgnoreCase("No"))
|
|
|
729 offerRelogin = false;
|
|
|
730
|
|
|
731 // Do we continue showing desktop on remote disconnect?
|
|
|
732 showOfflineDesktop = false;
|
|
|
733 str = readParameter("Show Offline Desktop", false);
|
|
|
734 if (str != null && str.equalsIgnoreCase("Yes"))
|
|
|
735 showOfflineDesktop = true;
|
|
|
736
|
|
|
737 // Fine tuning options.
|
|
|
738 deferScreenUpdates = readIntParameter("Defer screen updates", 20);
|
|
|
739 deferCursorUpdates = readIntParameter("Defer cursor updates", 10);
|
|
|
740 deferUpdateRequests = readIntParameter("Defer update requests", 0);
|
|
|
741
|
|
|
742 // Debugging options.
|
|
|
743 debugStatsExcludeUpdates = readIntParameter("DEBUG_XU", 0);
|
|
|
744 debugStatsMeasureUpdates = readIntParameter("DEBUG_CU", 0);
|
|
|
745
|
|
|
746 // SocketFactory.
|
|
|
747 socketFactory = readParameter("SocketFactory", false);
|
|
|
748 }
|
|
|
749
|
|
|
750 //
|
|
|
751 // Read password parameters. If an "ENCPASSWORD" parameter is set,
|
|
|
752 // then decrypt the password into the passwordParam string. Otherwise,
|
|
|
753 // try to read the "PASSWORD" parameter directly to passwordParam.
|
|
|
754 //
|
|
|
755
|
|
|
756 private void readPasswordParameters() {
|
|
|
757 String encPasswordParam = readParameter("ENCPASSWORD", false);
|
|
|
758 if (encPasswordParam == null) {
|
|
|
759 passwordParam = readParameter("PASSWORD", false);
|
|
|
760
|
|
|
761 } else {
|
|
|
762 // ENCPASSWORD is hexascii-encoded. Decode.
|
|
|
763 byte[] pw = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
|
764 int len = encPasswordParam.length() / 2;
|
|
|
765 if (len > 8)
|
|
|
766 len = 8;
|
|
|
767 for (int i = 0; i < len; i++) {
|
|
|
768 String hex = encPasswordParam.substring(i*2, i*2+2);
|
|
|
769 Integer x = new Integer(Integer.parseInt(hex, 16));
|
|
|
770 pw[i] = x.byteValue();
|
|
|
771 }
|
|
|
772 // Decrypt the password.
|
|
|
773 byte[] key = {23, 82, 107, 6, 35, 78, 88, 7};
|
|
|
774 DesCipher des = new DesCipher(key);
|
|
|
775 des.decrypt(pw, 0, pw, 0);
|
|
|
776 passwordParam = new String(pw);
|
|
|
777
|
|
|
778 }
|
|
|
779 }
|
|
|
780
|
|
|
781 public String readParameter(String name, boolean required) {
|
|
|
782 if (inAnApplet) {
|
|
|
783 String s = getParameter(name);
|
|
|
784 if ((s == null) && required) {
|
|
|
785 fatalError(name + " parameter not specified");
|
|
|
786 }
|
|
|
787 return s;
|
|
|
788 }
|
|
|
789
|
|
|
790 for (int i = 0; i < mainArgs.length; i += 2) {
|
|
|
791 if (mainArgs[i].equalsIgnoreCase(name)) {
|
|
|
792 try {
|
|
|
793 return mainArgs[i+1];
|
|
|
794 } catch (Exception e) {
|
|
|
795 if (required) {
|
|
|
796 fatalError(name + " parameter not specified");
|
|
|
797 }
|
|
|
798 return null;
|
|
|
799 }
|
|
|
800 }
|
|
|
801 }
|
|
|
802 if (required) {
|
|
|
803 fatalError(name + " parameter not specified");
|
|
|
804 }
|
|
|
805 return null;
|
|
|
806 }
|
|
|
807
|
|
|
808 int readIntParameter(String name, int defaultValue) {
|
|
|
809 String str = readParameter(name, false);
|
|
|
810 int result = defaultValue;
|
|
|
811 if (str != null) {
|
|
|
812 try {
|
|
|
813 result = Integer.parseInt(str);
|
|
|
814 } catch (NumberFormatException e) { }
|
|
|
815 }
|
|
|
816 return result;
|
|
|
817 }
|
|
|
818
|
|
|
819 //
|
|
|
820 // moveFocusToDesktop() - move keyboard focus either to VncCanvas.
|
|
|
821 //
|
|
|
822
|
|
|
823 void moveFocusToDesktop() {
|
|
|
824 if (vncContainer != null) {
|
|
|
825 if (vc != null && vncContainer.isAncestorOf(vc))
|
|
|
826 vc.requestFocus();
|
|
|
827 }
|
|
|
828 }
|
|
|
829
|
|
|
830 //
|
|
|
831 // disconnect() - close connection to server.
|
|
|
832 //
|
|
|
833
|
|
|
834 synchronized public void disconnect() {
|
|
|
835 System.out.println("Disconnecting");
|
|
|
836
|
|
|
837 if (vc != null) {
|
|
|
838 double sec = (System.currentTimeMillis() - vc.statStartTime) / 1000.0;
|
|
|
839 double rate = Math.round(vc.statNumUpdates / sec * 100) / 100.0;
|
|
|
840 int nRealRects = vc.statNumPixelRects;
|
|
|
841 int nPseudoRects = vc.statNumTotalRects - vc.statNumPixelRects;
|
|
|
842 System.out.println("Updates received: " + vc.statNumUpdates + " (" +
|
|
|
843 nRealRects + " rectangles + " + nPseudoRects +
|
|
|
844 " pseudo), " + rate + " updates/sec");
|
|
|
845 int numRectsOther = nRealRects - vc.statNumRectsTight
|
|
|
846 - vc.statNumRectsZRLE - vc.statNumRectsHextile
|
|
|
847 - vc.statNumRectsRaw - vc.statNumRectsCopy;
|
|
|
848 System.out.println("Rectangles:" +
|
|
|
849 " Tight=" + vc.statNumRectsTight +
|
|
|
850 "(JPEG=" + vc.statNumRectsTightJPEG +
|
|
|
851 ") ZRLE=" + vc.statNumRectsZRLE +
|
|
|
852 " Hextile=" + vc.statNumRectsHextile +
|
|
|
853 " Raw=" + vc.statNumRectsRaw +
|
|
|
854 " CopyRect=" + vc.statNumRectsCopy +
|
|
|
855 " other=" + numRectsOther);
|
|
|
856
|
|
|
857 int raw = vc.statNumBytesDecoded;
|
|
|
858 int compressed = vc.statNumBytesEncoded;
|
|
|
859 if (compressed > 0) {
|
|
|
860 double ratio = Math.round((double)raw / compressed * 1000) / 1000.0;
|
|
|
861 System.out.println("Pixel data: " + vc.statNumBytesDecoded +
|
|
|
862 " bytes, " + vc.statNumBytesEncoded +
|
|
|
863 " compressed, ratio " + ratio);
|
|
|
864 }
|
|
|
865 }
|
|
|
866
|
|
|
867 if (rfb != null && !rfb.closed())
|
|
|
868 rfb.close();
|
|
|
869 options.dispose();
|
|
|
870 clipboard.dispose();
|
|
|
871 if (rec != null)
|
|
|
872 rec.dispose();
|
|
|
873
|
|
|
874 if (inAnApplet) {
|
|
|
875 showMessage("Disconnected");
|
|
|
876 } else {
|
|
|
877 System.exit(0);
|
|
|
878 }
|
|
|
879 }
|
|
|
880
|
|
|
881 //
|
|
|
882 // fatalError() - print out a fatal error message.
|
|
|
883 // FIXME: Do we really need two versions of the fatalError() method?
|
|
|
884 //
|
|
|
885
|
|
|
886 synchronized public void fatalError(String str) {
|
|
|
887 System.out.println(str);
|
|
|
888
|
|
|
889 if (inAnApplet) {
|
|
|
890 // vncContainer null, applet not inited,
|
|
|
891 // can not present the error to the user.
|
|
|
892 Thread.currentThread().stop();
|
|
|
893 } else {
|
|
|
894 System.exit(1);
|
|
|
895 }
|
|
|
896 }
|
|
|
897
|
|
|
898 synchronized public void fatalError(String str, Exception e) {
|
|
|
899
|
|
|
900 if (rfb != null && rfb.closed()) {
|
|
|
901 // Not necessary to show error message if the error was caused
|
|
|
902 // by I/O problems after the rfb.close() method call.
|
|
|
903 System.out.println("RFB thread finished");
|
|
|
904 return;
|
|
|
905 }
|
|
|
906
|
|
|
907 System.out.println(str);
|
|
|
908 e.printStackTrace();
|
|
|
909
|
|
|
910 if (rfb != null)
|
|
|
911 rfb.close();
|
|
|
912
|
|
|
913 if (inAnApplet) {
|
|
|
914 showMessage(str);
|
|
|
915 } else {
|
|
|
916 System.exit(1);
|
|
|
917 }
|
|
|
918 }
|
|
|
919
|
|
|
920 //
|
|
|
921 // Show message text and optionally "Relogin" and "Close" buttons.
|
|
|
922 //
|
|
|
923
|
|
|
924 void showMessage(String msg) {
|
|
|
925 vncContainer.removeAll();
|
|
|
926
|
|
|
927 Label errLabel = new Label(msg, Label.CENTER);
|
|
|
928 errLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));
|
|
|
929
|
|
|
930 if (offerRelogin) {
|
|
|
931
|
|
|
932 Panel gridPanel = new Panel(new GridLayout(0, 1));
|
|
|
933 Panel outerPanel = new Panel(new FlowLayout(FlowLayout.LEFT));
|
|
|
934 outerPanel.add(gridPanel);
|
|
|
935 vncContainer.setLayout(new FlowLayout(FlowLayout.LEFT, 30, 16));
|
|
|
936 vncContainer.add(outerPanel);
|
|
|
937 Panel textPanel = new Panel(new FlowLayout(FlowLayout.CENTER));
|
|
|
938 textPanel.add(errLabel);
|
|
|
939 gridPanel.add(textPanel);
|
|
|
940 gridPanel.add(new ReloginPanel(this));
|
|
|
941
|
|
|
942 } else {
|
|
|
943
|
|
|
944 vncContainer.setLayout(new FlowLayout(FlowLayout.LEFT, 30, 30));
|
|
|
945 vncContainer.add(errLabel);
|
|
|
946
|
|
|
947 }
|
|
|
948
|
|
|
949 if (inSeparateFrame) {
|
|
|
950 vncFrame.pack();
|
|
|
951 } else {
|
|
|
952 validate();
|
|
|
953 }
|
|
|
954 }
|
|
|
955
|
|
|
956 //
|
|
|
957 // Stop the applet.
|
|
|
958 // Main applet thread will terminate on first exception
|
|
|
959 // after seeing that rfbThread has been set to null.
|
|
|
960 //
|
|
|
961
|
|
|
962 public void stop() {
|
|
|
963 System.out.println("Stopping applet");
|
|
|
964 rfbThread = null;
|
|
|
965 }
|
|
|
966
|
|
|
967 //
|
|
|
968 // This method is called before the applet is destroyed.
|
|
|
969 //
|
|
|
970
|
|
|
971 public void destroy() {
|
|
|
972 System.out.println("Destroying applet");
|
|
|
973
|
|
|
974 vncContainer.removeAll();
|
|
|
975 options.dispose();
|
|
|
976 clipboard.dispose();
|
|
|
977 if (rec != null)
|
|
|
978 rec.dispose();
|
|
|
979 if (rfb != null && !rfb.closed())
|
|
|
980 rfb.close();
|
|
|
981 if (inSeparateFrame)
|
|
|
982 vncFrame.dispose();
|
|
|
983 }
|
|
|
984
|
|
|
985 //
|
|
|
986 // Start/stop receiving mouse events.
|
|
|
987 //
|
|
|
988
|
|
|
989 public void enableInput(boolean enable) {
|
|
|
990 vc.enableInput(enable);
|
|
|
991 }
|
|
|
992
|
|
|
993 //
|
|
|
994 // Close application properly on window close event.
|
|
|
995 //
|
|
|
996
|
|
|
997 public void windowClosing(WindowEvent evt) {
|
|
|
998 System.out.println("Closing window");
|
|
|
999 if (rfb != null)
|
|
|
1000 disconnect();
|
|
|
1001
|
|
|
1002 vncContainer.hide();
|
|
|
1003
|
|
|
1004 if (!inAnApplet) {
|
|
|
1005 System.exit(0);
|
|
|
1006 }
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 //
|
|
|
1010 // Ignore window events we're not interested in.
|
|
|
1011 //
|
|
|
1012
|
|
|
1013 public void windowActivated(WindowEvent evt) {}
|
|
|
1014 public void windowDeactivated (WindowEvent evt) {}
|
|
|
1015 public void windowOpened(WindowEvent evt) {}
|
|
|
1016 public void windowClosed(WindowEvent evt) {}
|
|
|
1017 public void windowIconified(WindowEvent evt) {}
|
|
|
1018 public void windowDeiconified(WindowEvent evt) {}
|
|
|
1019 }
|
