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1 package myVncClient;
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2
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3 import java.awt.*;
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4 import java.awt.event.*;
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5 import java.io.*;
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6 import java.net.*;
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7
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8 public class VncViewer extends java.applet.Applet implements
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9 java.lang.Runnable, WindowListener {
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10
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11 boolean inAnApplet = true;
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12 boolean inSeparateFrame = false;
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13
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14 //
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15 // main() is called when run as a java program from the command line.
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16 // It simply runs the applet inside a newly-created frame.
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17 //
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18
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19 public static void main(String[] argv) {
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20 VncViewer v = new VncViewer();
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21 v.mainArgs = argv;
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22 v.inAnApplet = false;
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23 v.inSeparateFrame = true;
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18
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24
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25 v.init();
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26 v.start();
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27 }
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28
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29 String[] mainArgs;
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30
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31 MyRfbProto rfb;
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32 Thread rfbThread;
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33
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34 Frame vncFrame;
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35 Container vncContainer;
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36 ScrollPane desktopScrollPane;
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37 GridBagLayout gridbag;
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38 ButtonPanel buttonPanel;
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39 Label connStatusLabel;
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40 VncCanvas vc;
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41 OptionsFrame options;
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42 ClipboardFrame clipboard;
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43 RecordingFrame rec;
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44
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45 // Control session recording.
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46 Object recordingSync;
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47 String sessionFileName;
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48 boolean recordingActive;
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49 boolean recordingStatusChanged;
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50 String cursorUpdatesDef;
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51 String eightBitColorsDef;
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52
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53 // Variables read from parameter values.
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54 String socketFactory;
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55 String host;
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56 int port;
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57 String passwordParam;
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58 boolean showControls;
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59 boolean offerRelogin;
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60 boolean showOfflineDesktop;
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61 int deferScreenUpdates;
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62 int deferCursorUpdates;
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63 int deferUpdateRequests;
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64 int debugStatsExcludeUpdates;
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65 int debugStatsMeasureUpdates;
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66
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67 // Reference to this applet for inter-applet communication.
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68 public static java.applet.Applet refApplet;
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69
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70 //
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71 // init()
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72 //
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73
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74 public void init() {
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75
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76 readParameters();
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77
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78 refApplet = this;
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79
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80 if (inSeparateFrame) {
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81 vncFrame = new Frame("TightVNC");
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82 if (!inAnApplet) {
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83 vncFrame.add("Center", this);
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84 }
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85 vncContainer = vncFrame;
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86 } else {
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87 vncContainer = this;
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88 }
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89
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90 recordingSync = new Object();
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91
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92 options = new OptionsFrame(this);
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93 clipboard = new ClipboardFrame(this);
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94 if (RecordingFrame.checkSecurity())
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95 rec = new RecordingFrame(this);
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96
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97 sessionFileName = null;
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98 recordingActive = false;
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99 recordingStatusChanged = false;
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100 cursorUpdatesDef = null;
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101 eightBitColorsDef = null;
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102
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103 if (inSeparateFrame)
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104 vncFrame.addWindowListener(this);
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105
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106 rfbThread = new Thread(this);
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107 rfbThread.start();
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108 }
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109
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110 public void update(Graphics g) {
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111 }
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112
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113 //
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114 // run() - executed by the rfbThread to deal with the RFB socket.
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115 //
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116
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117 public void run() {
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118
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119 gridbag = new GridBagLayout();
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120 vncContainer.setLayout(gridbag);
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121
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122 GridBagConstraints gbc = new GridBagConstraints();
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123 gbc.gridwidth = GridBagConstraints.REMAINDER;
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124 gbc.anchor = GridBagConstraints.NORTHWEST;
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125
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126 if (showControls) {
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127 buttonPanel = new ButtonPanel(this);
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128 gridbag.setConstraints(buttonPanel, gbc);
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129 vncContainer.add(buttonPanel);
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130 }
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131
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132 /*****************************************************************************/
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133 if(inSeparateFrame) {
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134 vncFrame.pack();
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135 vncFrame.setVisible(true);
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136 } else {
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137 validate();
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138 }
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139 try {
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140
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141 rfb = new MyRfbProto(host, port, this);
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142 rfb.readServerInit();
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143
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144 createCanvas(0, 0);
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145 } catch (IOException e) {
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146 System.out.println("Socket error");
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147 System.exit(0);
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148 }
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149
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150 gbc.weightx = 1.0;
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151 gbc.weighty = 1.0;
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152
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153 if (inSeparateFrame) {
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154
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155 // Create a panel which itself is resizeable and can hold
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156 // non-resizeable VncCanvas component at the top left corner.
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157 Panel canvasPanel = new Panel();
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158 canvasPanel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
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159 canvasPanel.add(vc);
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160
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161 // Create a ScrollPane which will hold a panel with VncCanvas
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162 // inside.
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163 desktopScrollPane = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
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164 gbc.fill = GridBagConstraints.BOTH;
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165 gridbag.setConstraints(desktopScrollPane, gbc);
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166 desktopScrollPane.add(canvasPanel);
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167
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168 // Finally, add our ScrollPane to the Frame window.
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169 vncFrame.add(desktopScrollPane);
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170 vncFrame.setTitle(rfb.desktopName);
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171 vncFrame.pack();
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172 vc.resizeDesktopFrame();
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173
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174 } else {
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175
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176 // Just add the VncCanvas component to the Applet.
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177 gridbag.setConstraints(vc, gbc);
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178 add(vc);
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179 validate();
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180
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181 }
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182 /*****************************************************************************/
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183
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184
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185 try {
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186
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187 if (showControls)
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188 buttonPanel.enableButtons();
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189
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190 moveFocusToDesktop();
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191 processNormalProtocol();// main loop
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192
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193 } catch (NoRouteToHostException e) {
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194 fatalError("Network error: no route to server: " + host, e);
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195 } catch (UnknownHostException e) {
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196 fatalError("Network error: server name unknown: " + host, e);
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197 } catch (ConnectException e) {
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198 fatalError("Network error: could not connect to server: " + host
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199 + ":" + port, e);
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200 } catch (EOFException e) {
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201 if (showOfflineDesktop) {
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202 e.printStackTrace();
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203 System.out
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204 .println("Network error: remote side closed connection");
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205 if (vc != null) {
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206 vc.enableInput(false);
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207 }
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208 if (inSeparateFrame) {
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209 vncFrame.setTitle(rfb.desktopName + " [disconnected]");
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210 }
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211 if (rfb != null && !rfb.closed())
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212 rfb.close();
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213 if (showControls && buttonPanel != null) {
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214 buttonPanel.disableButtonsOnDisconnect();
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215 if (inSeparateFrame) {
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216 vncFrame.pack();
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217 } else {
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218 validate();
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219 }
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220 }
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221 } else {
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222 fatalError("Network error: remote side closed connection", e);
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223 }
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224 } catch (IOException e) {
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225 String str = e.getMessage();
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226 if (str != null && str.length() != 0) {
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227 fatalError("Network Error: " + str, e);
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228 } else {
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229 fatalError(e.toString(), e);
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230 }
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231 } catch (Exception e) {
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232 String str = e.getMessage();
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233 if (str != null && str.length() != 0) {
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234 fatalError("Error: " + str, e);
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235 } else {
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236 fatalError(e.toString(), e);
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237 }
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238 }
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239
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240 }
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241
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242 //
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243 // Create a VncCanvas instance.
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244 //
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245
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246 void createCanvas(int maxWidth, int maxHeight) throws IOException {
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247 // Determine if Java 2D API is available and use a special
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248 // version of VncCanvas if it is present.
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249 vc = null;
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250 try {
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251 // This throws ClassNotFoundException if there is no Java 2D API.
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252 Class cl = Class.forName("java.awt.Graphics2D");
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253 // If we could load Graphics2D class, then we can use VncCanvas2D.
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254 cl = Class.forName("VncCanvas2");
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255 Class[] argClasses = { this.getClass(), Integer.TYPE, Integer.TYPE };
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256 java.lang.reflect.Constructor cstr = cl.getConstructor(argClasses);
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257 Object[] argObjects = { this, new Integer(maxWidth),
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258 new Integer(maxHeight) };
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259 vc = (VncCanvas) cstr.newInstance(argObjects);
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260 } catch (Exception e) {
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261 System.out.println("Warning: Java 2D API is not available");
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262 }
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263
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264 // If we failed to create VncCanvas2D, use old VncCanvas.
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265 if (vc == null)
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266 vc = new VncCanvas(this, maxWidth, maxHeight);
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267 }
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268
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269 //
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270 // Process RFB socket messages.
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271 // If the rfbThread is being stopped, ignore any exceptions,
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272 // otherwise rethrow the exception so it can be handled.
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273 //
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274
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275 void processNormalProtocol() throws Exception {
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276 try {
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277 vc.processNormalProtocol();// main loop
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278 } catch (Exception e) {
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279 if (rfbThread == null) {
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280 System.out.println("Ignoring RFB socket exceptions"
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281 + " because applet is stopping");
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282 } else {
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283 throw e;
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284 }
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285 }
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286 }
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287
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288 //
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289 // Connect to the RFB server and authenticate the user.
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290 //
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291
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292 void connectAndAuthenticate() throws Exception {
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293 showConnectionStatus("Initializing...");
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294 if (inSeparateFrame) {
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295 vncFrame.pack();
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296 vncFrame.setVisible(true);
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297 } else {
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298 validate();
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299 }
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300
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301 showConnectionStatus("Connecting to " + host + ", port " + port + "...");
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302
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303 rfb = new MyRfbProto(host, port, this);
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304 showConnectionStatus("Connected to server");
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305
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306 rfb.readVersionMsg();
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307 showConnectionStatus("RFB server supports protocol version "
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308 + rfb.serverMajor + "." + rfb.serverMinor);
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309
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310 rfb.writeVersionMsg();
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311 showConnectionStatus("Using RFB protocol version " + rfb.clientMajor
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312 + "." + rfb.clientMinor);
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313
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314 int secType = rfb.negotiateSecurity();
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315 int authType;
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316 if (secType == RfbProto.SecTypeTight) {
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317 showConnectionStatus("Enabling TightVNC protocol extensions");
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318 rfb.setupTunneling();
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319 authType = rfb.negotiateAuthenticationTight();
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320 } else {
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321 authType = secType;
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322 }
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323
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324 switch (authType) {
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325 case RfbProto.AuthNone:
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326 showConnectionStatus("No authentication needed");
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327 rfb.authenticateNone();
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328 break;
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329 case RfbProto.AuthVNC:
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330 showConnectionStatus("Performing standard VNC authentication");
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331 if (passwordParam != null) {
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332 rfb.authenticateVNC(passwordParam);
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333 } else {
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334 String pw = askPassword();
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335 rfb.authenticateVNC(pw);
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336 }
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337 break;
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338 default:
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339 throw new Exception("Unknown authentication scheme " + authType);
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340 }
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341 }
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342
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343 //
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344 // Show a message describing the connection status.
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345 // To hide the connection status label, use (msg == null).
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346 //
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347
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348 void showConnectionStatus(String msg) {
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349 if (msg == null) {
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350 if (vncContainer.isAncestorOf(connStatusLabel)) {
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351 vncContainer.remove(connStatusLabel);
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352 }
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353 return;
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354 }
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355
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356 System.out.println(msg);
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357
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358 if (connStatusLabel == null) {
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359 connStatusLabel = new Label("Status: " + msg);
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360 connStatusLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));
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361 } else {
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362 connStatusLabel.setText("Status: " + msg);
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363 }
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364
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365 if (!vncContainer.isAncestorOf(connStatusLabel)) {
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366 GridBagConstraints gbc = new GridBagConstraints();
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367 gbc.gridwidth = GridBagConstraints.REMAINDER;
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368 gbc.fill = GridBagConstraints.HORIZONTAL;
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369 gbc.anchor = GridBagConstraints.NORTHWEST;
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370 gbc.weightx = 1.0;
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371 gbc.weighty = 1.0;
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372 gbc.insets = new Insets(20, 30, 20, 30);
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373 gridbag.setConstraints(connStatusLabel, gbc);
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374 vncContainer.add(connStatusLabel);
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375 }
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376
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377 if (inSeparateFrame) {
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378 vncFrame.pack();
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379 } else {
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380 validate();
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381 }
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382 }
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383
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4
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384 //
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385 // Show an authentication panel.
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386 //
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387
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4
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388 String askPassword() throws Exception {
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389 showConnectionStatus(null);
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390
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391 AuthPanel authPanel = new AuthPanel(this);
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392
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393 GridBagConstraints gbc = new GridBagConstraints();
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394 gbc.gridwidth = GridBagConstraints.REMAINDER;
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395 gbc.anchor = GridBagConstraints.NORTHWEST;
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396 gbc.weightx = 1.0;
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397 gbc.weighty = 1.0;
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398 gbc.ipadx = 100;
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399 gbc.ipady = 50;
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400 gridbag.setConstraints(authPanel, gbc);
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401 vncContainer.add(authPanel);
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0
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402
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4
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403 if (inSeparateFrame) {
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404 vncFrame.pack();
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405 } else {
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406 validate();
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407 }
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0
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408
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4
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409 authPanel.moveFocusToDefaultField();
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410 String pw = authPanel.getPassword();
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411 vncContainer.remove(authPanel);
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0
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412
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4
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413 return pw;
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414 }
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0
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415
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4
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416 //
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417 // Do the rest of the protocol initialisation.
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418 //
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0
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419
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4
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420 void doProtocolInitialisation() throws IOException {
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421 rfb.writeClientInit();
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422 rfb.readServerInit();
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0
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423
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4
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424 System.out.println("Desktop name is " + rfb.desktopName);
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425 System.out.println("Desktop size is " + rfb.framebufferWidth + " x "
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|
426 + rfb.framebufferHeight);
|
|
|
427
|
|
|
428 setEncodings();
|
|
0
|
429
|
|
4
|
430 showConnectionStatus(null);
|
|
|
431 }
|
|
0
|
432
|
|
4
|
433 //
|
|
|
434 // Send current encoding list to the RFB server.
|
|
|
435 //
|
|
0
|
436
|
|
4
|
437 int[] encodingsSaved;
|
|
|
438 int nEncodingsSaved;
|
|
0
|
439
|
|
4
|
440 void setEncodings() {
|
|
|
441 setEncodings(false);
|
|
|
442 }
|
|
0
|
443
|
|
4
|
444 void autoSelectEncodings() {
|
|
|
445 setEncodings(true);
|
|
|
446 }
|
|
0
|
447
|
|
4
|
448 void setEncodings(boolean autoSelectOnly) {
|
|
|
449 if (options == null || rfb == null || !rfb.inNormalProtocol)
|
|
|
450 return;
|
|
0
|
451
|
|
4
|
452 int preferredEncoding = options.preferredEncoding;
|
|
|
453 if (preferredEncoding == -1) {
|
|
|
454 long kbitsPerSecond = rfb.kbitsPerSecond();
|
|
|
455 if (nEncodingsSaved < 1) {
|
|
|
456 // Choose Tight or ZRLE encoding for the very first update.
|
|
|
457 System.out.println("Using Tight/ZRLE encodings");
|
|
|
458 preferredEncoding = RfbProto.EncodingTight;
|
|
|
459 } else if (kbitsPerSecond > 2000
|
|
|
460 && encodingsSaved[0] != RfbProto.EncodingHextile) {
|
|
|
461 // Switch to Hextile if the connection speed is above 2Mbps.
|
|
|
462 System.out.println("Throughput " + kbitsPerSecond
|
|
|
463 + " kbit/s - changing to Hextile encoding");
|
|
|
464 preferredEncoding = RfbProto.EncodingHextile;
|
|
|
465 } else if (kbitsPerSecond < 1000
|
|
|
466 && encodingsSaved[0] != RfbProto.EncodingTight) {
|
|
|
467 // Switch to Tight/ZRLE if the connection speed is below 1Mbps.
|
|
|
468 System.out.println("Throughput " + kbitsPerSecond
|
|
|
469 + " kbit/s - changing to Tight/ZRLE encodings");
|
|
|
470 preferredEncoding = RfbProto.EncodingTight;
|
|
|
471 } else {
|
|
|
472 // Don't change the encoder.
|
|
|
473 if (autoSelectOnly)
|
|
|
474 return;
|
|
|
475 preferredEncoding = encodingsSaved[0];
|
|
|
476 }
|
|
|
477 } else {
|
|
|
478 // Auto encoder selection is not enabled.
|
|
|
479 if (autoSelectOnly)
|
|
|
480 return;
|
|
|
481 }
|
|
0
|
482
|
|
4
|
483 int[] encodings = new int[20];
|
|
|
484 int nEncodings = 0;
|
|
0
|
485
|
|
4
|
486 encodings[nEncodings++] = preferredEncoding;
|
|
|
487 if (options.useCopyRect) {
|
|
|
488 encodings[nEncodings++] = RfbProto.EncodingCopyRect;
|
|
|
489 }
|
|
0
|
490
|
|
4
|
491 if (preferredEncoding != RfbProto.EncodingTight) {
|
|
|
492 encodings[nEncodings++] = RfbProto.EncodingTight;
|
|
|
493 }
|
|
|
494 if (preferredEncoding != RfbProto.EncodingZRLE) {
|
|
|
495 encodings[nEncodings++] = RfbProto.EncodingZRLE;
|
|
|
496 }
|
|
|
497 if (preferredEncoding != RfbProto.EncodingHextile) {
|
|
|
498 encodings[nEncodings++] = RfbProto.EncodingHextile;
|
|
|
499 }
|
|
|
500 if (preferredEncoding != RfbProto.EncodingZlib) {
|
|
|
501 encodings[nEncodings++] = RfbProto.EncodingZlib;
|
|
|
502 }
|
|
|
503 if (preferredEncoding != RfbProto.EncodingCoRRE) {
|
|
|
504 encodings[nEncodings++] = RfbProto.EncodingCoRRE;
|
|
|
505 }
|
|
|
506 if (preferredEncoding != RfbProto.EncodingRRE) {
|
|
|
507 encodings[nEncodings++] = RfbProto.EncodingRRE;
|
|
|
508 }
|
|
|
509
|
|
|
510 if (options.compressLevel >= 0 && options.compressLevel <= 9) {
|
|
|
511 encodings[nEncodings++] = RfbProto.EncodingCompressLevel0
|
|
|
512 + options.compressLevel;
|
|
|
513 }
|
|
|
514 if (options.jpegQuality >= 0 && options.jpegQuality <= 9) {
|
|
|
515 encodings[nEncodings++] = RfbProto.EncodingQualityLevel0
|
|
|
516 + options.jpegQuality;
|
|
|
517 }
|
|
0
|
518
|
|
4
|
519 if (options.requestCursorUpdates) {
|
|
|
520 encodings[nEncodings++] = RfbProto.EncodingXCursor;
|
|
|
521 encodings[nEncodings++] = RfbProto.EncodingRichCursor;
|
|
|
522 if (!options.ignoreCursorUpdates)
|
|
|
523 encodings[nEncodings++] = RfbProto.EncodingPointerPos;
|
|
|
524 }
|
|
|
525
|
|
|
526 encodings[nEncodings++] = RfbProto.EncodingLastRect;
|
|
|
527 encodings[nEncodings++] = RfbProto.EncodingNewFBSize;
|
|
0
|
528
|
|
4
|
529 boolean encodingsWereChanged = false;
|
|
|
530 if (nEncodings != nEncodingsSaved) {
|
|
|
531 encodingsWereChanged = true;
|
|
|
532 } else {
|
|
|
533 for (int i = 0; i < nEncodings; i++) {
|
|
|
534 if (encodings[i] != encodingsSaved[i]) {
|
|
|
535 encodingsWereChanged = true;
|
|
|
536 break;
|
|
|
537 }
|
|
|
538 }
|
|
|
539 }
|
|
0
|
540
|
|
4
|
541 if (encodingsWereChanged) {
|
|
|
542 try {
|
|
|
543 rfb.writeSetEncodings(encodings, nEncodings);
|
|
|
544 if (vc != null) {
|
|
|
545 vc.softCursorFree();
|
|
|
546 }
|
|
|
547 } catch (Exception e) {
|
|
|
548 e.printStackTrace();
|
|
|
549 }
|
|
|
550 encodingsSaved = encodings;
|
|
|
551 nEncodingsSaved = nEncodings;
|
|
|
552 }
|
|
|
553 }
|
|
0
|
554
|
|
4
|
555 //
|
|
|
556 // setCutText() - send the given cut text to the RFB server.
|
|
|
557 //
|
|
0
|
558
|
|
4
|
559 void setCutText(String text) {
|
|
|
560 try {
|
|
|
561 if (rfb != null && rfb.inNormalProtocol) {
|
|
|
562 rfb.writeClientCutText(text);
|
|
|
563 }
|
|
|
564 } catch (Exception e) {
|
|
|
565 e.printStackTrace();
|
|
|
566 }
|
|
|
567 }
|
|
0
|
568
|
|
4
|
569 //
|
|
|
570 // Order change in session recording status. To stop recording, pass
|
|
|
571 // null in place of the fname argument.
|
|
|
572 //
|
|
0
|
573
|
|
4
|
574 void setRecordingStatus(String fname) {
|
|
|
575 synchronized (recordingSync) {
|
|
|
576 sessionFileName = fname;
|
|
|
577 recordingStatusChanged = true;
|
|
|
578 }
|
|
|
579 }
|
|
|
580
|
|
|
581 //
|
|
|
582 // Start or stop session recording. Returns true if this method call
|
|
|
583 // causes recording of a new session.
|
|
|
584 //
|
|
0
|
585
|
|
4
|
586 boolean checkRecordingStatus() throws IOException {
|
|
|
587 synchronized (recordingSync) {
|
|
|
588 if (recordingStatusChanged) {
|
|
|
589 recordingStatusChanged = false;
|
|
|
590 if (sessionFileName != null) {
|
|
|
591 startRecording();
|
|
|
592 return true;
|
|
|
593 } else {
|
|
|
594 stopRecording();
|
|
|
595 }
|
|
|
596 }
|
|
|
597 }
|
|
|
598 return false;
|
|
|
599 }
|
|
0
|
600
|
|
4
|
601 //
|
|
|
602 // Start session recording.
|
|
|
603 //
|
|
0
|
604
|
|
4
|
605 protected void startRecording() throws IOException {
|
|
|
606 synchronized (recordingSync) {
|
|
|
607 if (!recordingActive) {
|
|
|
608 // Save settings to restore them after recording the session.
|
|
|
609 cursorUpdatesDef = options.choices[options.cursorUpdatesIndex]
|
|
|
610 .getSelectedItem();
|
|
|
611 eightBitColorsDef = options.choices[options.eightBitColorsIndex]
|
|
|
612 .getSelectedItem();
|
|
|
613 // Set options to values suitable for recording.
|
|
|
614 options.choices[options.cursorUpdatesIndex].select("Disable");
|
|
|
615 options.choices[options.cursorUpdatesIndex].setEnabled(false);
|
|
|
616 options.setEncodings();
|
|
|
617 options.choices[options.eightBitColorsIndex].select("No");
|
|
|
618 options.choices[options.eightBitColorsIndex].setEnabled(false);
|
|
|
619 options.setColorFormat();
|
|
|
620 } else {
|
|
|
621 rfb.closeSession();
|
|
|
622 }
|
|
|
623
|
|
|
624 System.out.println("Recording the session in " + sessionFileName);
|
|
|
625 rfb.startSession(sessionFileName);
|
|
|
626 recordingActive = true;
|
|
|
627 }
|
|
|
628 }
|
|
0
|
629
|
|
4
|
630 //
|
|
|
631 // Stop session recording.
|
|
|
632 //
|
|
0
|
633
|
|
4
|
634 protected void stopRecording() throws IOException {
|
|
|
635 synchronized (recordingSync) {
|
|
|
636 if (recordingActive) {
|
|
|
637 // Restore options.
|
|
|
638 options.choices[options.cursorUpdatesIndex]
|
|
|
639 .select(cursorUpdatesDef);
|
|
|
640 options.choices[options.cursorUpdatesIndex].setEnabled(true);
|
|
|
641 options.setEncodings();
|
|
|
642 options.choices[options.eightBitColorsIndex]
|
|
|
643 .select(eightBitColorsDef);
|
|
|
644 options.choices[options.eightBitColorsIndex].setEnabled(true);
|
|
|
645 options.setColorFormat();
|
|
|
646
|
|
|
647 rfb.closeSession();
|
|
|
648 System.out.println("Session recording stopped.");
|
|
|
649 }
|
|
|
650 sessionFileName = null;
|
|
|
651 recordingActive = false;
|
|
|
652 }
|
|
|
653 }
|
|
0
|
654
|
|
4
|
655 //
|
|
|
656 // readParameters() - read parameters from the html source or from the
|
|
|
657 // command line. On the command line, the arguments are just a sequence of
|
|
|
658 // param_name/param_value pairs where the names and values correspond to
|
|
|
659 // those expected in the html applet tag source.
|
|
|
660 //
|
|
0
|
661
|
|
4
|
662 void readParameters() {
|
|
18
|
663 host = readParameter("HOST", !inAnApplet);
|
|
0
|
664
|
|
18
|
665 if (host == null) { host = getCodeBase().getHost(); if
|
|
|
666 (host.equals("")) { fatalError("HOST parameter not specified"); } }
|
|
|
667
|
|
|
668 port = readIntParameter("PORT", 5550);
|
|
|
669
|
|
4
|
670 // Read "ENCPASSWORD" or "PASSWORD" parameter if specified.
|
|
|
671 readPasswordParameters();
|
|
|
672
|
|
|
673 String str;
|
|
|
674 if (inAnApplet) {
|
|
|
675 str = readParameter("Open New Window", false);
|
|
|
676 if (str != null && str.equalsIgnoreCase("Yes"))
|
|
|
677 inSeparateFrame = true;
|
|
|
678 }
|
|
0
|
679
|
|
4
|
680 // "Show Controls" set to "No" disables button panel.
|
|
|
681 showControls = true;
|
|
|
682 str = readParameter("Show Controls", false);
|
|
|
683 if (str != null && str.equalsIgnoreCase("No"))
|
|
|
684 showControls = false;
|
|
0
|
685
|
|
4
|
686 // "Offer Relogin" set to "No" disables "Login again" and "Close
|
|
|
687 // window" buttons under error messages in applet mode.
|
|
|
688 offerRelogin = true;
|
|
|
689 str = readParameter("Offer Relogin", false);
|
|
|
690 if (str != null && str.equalsIgnoreCase("No"))
|
|
|
691 offerRelogin = false;
|
|
|
692
|
|
|
693 // Do we continue showing desktop on remote disconnect?
|
|
|
694 showOfflineDesktop = false;
|
|
|
695 str = readParameter("Show Offline Desktop", false);
|
|
|
696 if (str != null && str.equalsIgnoreCase("Yes"))
|
|
|
697 showOfflineDesktop = true;
|
|
0
|
698
|
|
4
|
699 // Fine tuning options.
|
|
|
700 deferScreenUpdates = readIntParameter("Defer screen updates", 20);
|
|
|
701 deferCursorUpdates = readIntParameter("Defer cursor updates", 10);
|
|
|
702 deferUpdateRequests = readIntParameter("Defer update requests", 0);
|
|
0
|
703
|
|
4
|
704 // Debugging options.
|
|
|
705 debugStatsExcludeUpdates = readIntParameter("DEBUG_XU", 0);
|
|
|
706 debugStatsMeasureUpdates = readIntParameter("DEBUG_CU", 0);
|
|
0
|
707
|
|
4
|
708 // SocketFactory.
|
|
|
709 socketFactory = readParameter("SocketFactory", false);
|
|
|
710 }
|
|
0
|
711
|
|
4
|
712 //
|
|
|
713 // Read password parameters. If an "ENCPASSWORD" parameter is set,
|
|
|
714 // then decrypt the password into the passwordParam string. Otherwise,
|
|
|
715 // try to read the "PASSWORD" parameter directly to passwordParam.
|
|
|
716 //
|
|
0
|
717
|
|
4
|
718 private void readPasswordParameters() {
|
|
|
719 String encPasswordParam = readParameter("ENCPASSWORD", false);
|
|
|
720 if (encPasswordParam == null) {
|
|
|
721 passwordParam = readParameter("PASSWORD", false);
|
|
0
|
722
|
|
4
|
723 } else {
|
|
|
724 // ENCPASSWORD is hexascii-encoded. Decode.
|
|
|
725 byte[] pw = { 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
|
726 int len = encPasswordParam.length() / 2;
|
|
|
727 if (len > 8)
|
|
|
728 len = 8;
|
|
|
729 for (int i = 0; i < len; i++) {
|
|
|
730 String hex = encPasswordParam.substring(i * 2, i * 2 + 2);
|
|
|
731 Integer x = new Integer(Integer.parseInt(hex, 16));
|
|
|
732 pw[i] = x.byteValue();
|
|
|
733 }
|
|
|
734 // Decrypt the password.
|
|
|
735 byte[] key = { 23, 82, 107, 6, 35, 78, 88, 7 };
|
|
|
736 DesCipher des = new DesCipher(key);
|
|
|
737 des.decrypt(pw, 0, pw, 0);
|
|
|
738 passwordParam = new String(pw);
|
|
|
739
|
|
|
740 }
|
|
|
741 }
|
|
0
|
742
|
|
4
|
743 public String readParameter(String name, boolean required) {
|
|
|
744 if (inAnApplet) {
|
|
|
745 String s = getParameter(name);
|
|
|
746 if ((s == null) && required) {
|
|
|
747 fatalError(name + " parameter not specified");
|
|
|
748 }
|
|
|
749 return s;
|
|
|
750 }
|
|
0
|
751
|
|
4
|
752 for (int i = 0; i < mainArgs.length; i += 2) {
|
|
|
753 if (mainArgs[i].equalsIgnoreCase(name)) {
|
|
|
754 try {
|
|
|
755 return mainArgs[i + 1];
|
|
|
756 } catch (Exception e) {
|
|
|
757 if (required) {
|
|
|
758 fatalError(name + " parameter not specified");
|
|
|
759 }
|
|
|
760 return null;
|
|
|
761 }
|
|
|
762 }
|
|
|
763 }
|
|
|
764 if (required) {
|
|
|
765 fatalError(name + " parameter not specified");
|
|
|
766 }
|
|
|
767 return null;
|
|
0
|
768 }
|
|
4
|
769
|
|
|
770 int readIntParameter(String name, int defaultValue) {
|
|
|
771 String str = readParameter(name, false);
|
|
|
772 int result = defaultValue;
|
|
|
773 if (str != null) {
|
|
|
774 try {
|
|
|
775 result = Integer.parseInt(str);
|
|
|
776 } catch (NumberFormatException e) {
|
|
|
777 }
|
|
|
778 }
|
|
|
779 return result;
|
|
|
780 }
|
|
0
|
781
|
|
4
|
782 //
|
|
|
783 // moveFocusToDesktop() - move keyboard focus either to VncCanvas.
|
|
|
784 //
|
|
0
|
785
|
|
4
|
786 void moveFocusToDesktop() {
|
|
|
787 if (vncContainer != null) {
|
|
|
788 if (vc != null && vncContainer.isAncestorOf(vc))
|
|
|
789 vc.requestFocus();
|
|
|
790 }
|
|
|
791 }
|
|
0
|
792
|
|
4
|
793 //
|
|
|
794 // disconnect() - close connection to server.
|
|
|
795 //
|
|
0
|
796
|
|
4
|
797 synchronized public void disconnect() {
|
|
|
798 System.out.println("Disconnecting");
|
|
0
|
799
|
|
4
|
800 if (vc != null) {
|
|
|
801 double sec = (System.currentTimeMillis() - vc.statStartTime) / 1000.0;
|
|
|
802 double rate = Math.round(vc.statNumUpdates / sec * 100) / 100.0;
|
|
|
803 int nRealRects = vc.statNumPixelRects;
|
|
|
804 int nPseudoRects = vc.statNumTotalRects - vc.statNumPixelRects;
|
|
|
805 System.out.println("Updates received: " + vc.statNumUpdates + " ("
|
|
|
806 + nRealRects + " rectangles + " + nPseudoRects
|
|
|
807 + " pseudo), " + rate + " updates/sec");
|
|
|
808 int numRectsOther = nRealRects - vc.statNumRectsTight
|
|
|
809 - vc.statNumRectsZRLE - vc.statNumRectsHextile
|
|
|
810 - vc.statNumRectsRaw - vc.statNumRectsCopy;
|
|
|
811 System.out.println("Rectangles:" + " Tight=" + vc.statNumRectsTight
|
|
|
812 + "(JPEG=" + vc.statNumRectsTightJPEG + ") ZRLE="
|
|
|
813 + vc.statNumRectsZRLE + " Hextile="
|
|
|
814 + vc.statNumRectsHextile + " Raw=" + vc.statNumRectsRaw
|
|
|
815 + " CopyRect=" + vc.statNumRectsCopy + " other="
|
|
|
816 + numRectsOther);
|
|
0
|
817
|
|
4
|
818 int raw = vc.statNumBytesDecoded;
|
|
|
819 int compressed = vc.statNumBytesEncoded;
|
|
|
820 if (compressed > 0) {
|
|
|
821 double ratio = Math.round((double) raw / compressed * 1000) / 1000.0;
|
|
|
822 System.out.println("Pixel data: " + vc.statNumBytesDecoded
|
|
|
823 + " bytes, " + vc.statNumBytesEncoded
|
|
|
824 + " compressed, ratio " + ratio);
|
|
|
825 }
|
|
|
826 }
|
|
0
|
827
|
|
4
|
828 if (rfb != null && !rfb.closed())
|
|
|
829 rfb.close();
|
|
|
830 options.dispose();
|
|
|
831 clipboard.dispose();
|
|
|
832 if (rec != null)
|
|
|
833 rec.dispose();
|
|
0
|
834
|
|
4
|
835 if (inAnApplet) {
|
|
|
836 showMessage("Disconnected");
|
|
|
837 } else {
|
|
|
838 System.exit(0);
|
|
|
839 }
|
|
|
840 }
|
|
|
841
|
|
|
842 //
|
|
|
843 // fatalError() - print out a fatal error message.
|
|
|
844 // FIXME: Do we really need two versions of the fatalError() method?
|
|
|
845 //
|
|
|
846
|
|
|
847 synchronized public void fatalError(String str) {
|
|
|
848 System.out.println(str);
|
|
0
|
849
|
|
4
|
850 if (inAnApplet) {
|
|
|
851 // vncContainer null, applet not inited,
|
|
|
852 // can not present the error to the user.
|
|
|
853 Thread.currentThread().stop();
|
|
|
854 } else {
|
|
|
855 System.exit(1);
|
|
|
856 }
|
|
|
857 }
|
|
0
|
858
|
|
4
|
859 synchronized public void fatalError(String str, Exception e) {
|
|
0
|
860
|
|
4
|
861 if (rfb != null && rfb.closed()) {
|
|
|
862 // Not necessary to show error message if the error was caused
|
|
|
863 // by I/O problems after the rfb.close() method call.
|
|
|
864 System.out.println("RFB thread finished");
|
|
|
865 return;
|
|
|
866 }
|
|
|
867
|
|
|
868 System.out.println(str);
|
|
|
869 e.printStackTrace();
|
|
0
|
870
|
|
4
|
871 if (rfb != null)
|
|
|
872 rfb.close();
|
|
0
|
873
|
|
4
|
874 if (inAnApplet) {
|
|
|
875 showMessage(str);
|
|
|
876 } else {
|
|
|
877 System.exit(1);
|
|
|
878 }
|
|
|
879 }
|
|
0
|
880
|
|
4
|
881 //
|
|
|
882 // Show message text and optionally "Relogin" and "Close" buttons.
|
|
|
883 //
|
|
0
|
884
|
|
4
|
885 void showMessage(String msg) {
|
|
|
886 vncContainer.removeAll();
|
|
0
|
887
|
|
4
|
888 Label errLabel = new Label(msg, Label.CENTER);
|
|
|
889 errLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));
|
|
0
|
890
|
|
4
|
891 if (offerRelogin) {
|
|
0
|
892
|
|
4
|
893 Panel gridPanel = new Panel(new GridLayout(0, 1));
|
|
|
894 Panel outerPanel = new Panel(new FlowLayout(FlowLayout.LEFT));
|
|
|
895 outerPanel.add(gridPanel);
|
|
|
896 vncContainer.setLayout(new FlowLayout(FlowLayout.LEFT, 30, 16));
|
|
|
897 vncContainer.add(outerPanel);
|
|
|
898 Panel textPanel = new Panel(new FlowLayout(FlowLayout.CENTER));
|
|
|
899 textPanel.add(errLabel);
|
|
|
900 gridPanel.add(textPanel);
|
|
|
901 gridPanel.add(new ReloginPanel(this));
|
|
|
902
|
|
|
903 } else {
|
|
0
|
904
|
|
4
|
905 vncContainer.setLayout(new FlowLayout(FlowLayout.LEFT, 30, 30));
|
|
|
906 vncContainer.add(errLabel);
|
|
|
907
|
|
|
908 }
|
|
0
|
909
|
|
4
|
910 if (inSeparateFrame) {
|
|
|
911 vncFrame.pack();
|
|
|
912 } else {
|
|
|
913 validate();
|
|
|
914 }
|
|
|
915 }
|
|
0
|
916
|
|
4
|
917 //
|
|
|
918 // Stop the applet.
|
|
|
919 // Main applet thread will terminate on first exception
|
|
|
920 // after seeing that rfbThread has been set to null.
|
|
|
921 //
|
|
0
|
922
|
|
4
|
923 public void stop() {
|
|
|
924 System.out.println("Stopping applet");
|
|
|
925 rfbThread = null;
|
|
|
926 }
|
|
0
|
927
|
|
4
|
928 //
|
|
|
929 // This method is called before the applet is destroyed.
|
|
|
930 //
|
|
|
931
|
|
|
932 public void destroy() {
|
|
|
933 System.out.println("Destroying applet");
|
|
0
|
934
|
|
4
|
935 vncContainer.removeAll();
|
|
|
936 options.dispose();
|
|
|
937 clipboard.dispose();
|
|
|
938 if (rec != null)
|
|
|
939 rec.dispose();
|
|
|
940 if (rfb != null && !rfb.closed())
|
|
|
941 rfb.close();
|
|
|
942 if (inSeparateFrame)
|
|
|
943 vncFrame.dispose();
|
|
|
944 }
|
|
0
|
945
|
|
4
|
946 //
|
|
|
947 // Start/stop receiving mouse events.
|
|
|
948 //
|
|
|
949
|
|
|
950 public void enableInput(boolean enable) {
|
|
|
951 vc.enableInput(enable);
|
|
|
952 }
|
|
0
|
953
|
|
4
|
954 //
|
|
|
955 // Close application properly on window close event.
|
|
|
956 //
|
|
0
|
957
|
|
4
|
958 public void windowClosing(WindowEvent evt) {
|
|
|
959 System.out.println("Closing window");
|
|
|
960 if (rfb != null)
|
|
|
961 disconnect();
|
|
0
|
962
|
|
4
|
963 vncContainer.hide();
|
|
|
964
|
|
|
965 if (!inAnApplet) {
|
|
|
966 System.exit(0);
|
|
|
967 }
|
|
|
968 }
|
|
0
|
969
|
|
4
|
970 //
|
|
|
971 // Ignore window events we're not interested in.
|
|
|
972 //
|
|
0
|
973
|
|
4
|
974 public void windowActivated(WindowEvent evt) {
|
|
|
975 }
|
|
|
976
|
|
|
977 public void windowDeactivated(WindowEvent evt) {
|
|
|
978 }
|
|
0
|
979
|
|
4
|
980 public void windowOpened(WindowEvent evt) {
|
|
|
981 }
|
|
|
982
|
|
|
983 public void windowClosed(WindowEvent evt) {
|
|
|
984 }
|
|
0
|
985
|
|
4
|
986 public void windowIconified(WindowEvent evt) {
|
|
|
987 }
|
|
|
988
|
|
|
989 public void windowDeiconified(WindowEvent evt) {
|
|
|
990 }
|
|
0
|
991 }
|
