TightVNC Java Viewer source copied to trunk from its old location under orig/trunk.

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2457 3789f03b-4d11-0410-bbf8-ca57d06f2519

java/com/tightvnc/vncviewer/AuthPanel.java

@@ -0,0 +1,116 @@
+//
+//  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
+//  Copyright (C) 2002-2006 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+import java.awt.*;
+import java.awt.event.*;
+
+//
+// The panel which implements the user authentication scheme
+//
+
+class AuthPanel extends Panel implements ActionListener {
+
+  TextField passwordField;
+  Button okButton;
+
+  //
+  // Constructor.
+  //
+
+  public AuthPanel(VncViewer viewer)
+  {
+    Label titleLabel = new Label("VNC Authentication", Label.CENTER);
+    titleLabel.setFont(new Font("Helvetica", Font.BOLD, 18));
+
+    Label promptLabel = new Label("Password:", Label.CENTER);
+
+    passwordField = new TextField(10);
+    passwordField.setForeground(Color.black);
+    passwordField.setBackground(Color.white);
+    passwordField.setEchoChar('*');
+
+    okButton = new Button("OK");
+
+    GridBagLayout gridbag = new GridBagLayout();
+    GridBagConstraints gbc = new GridBagConstraints();
+
+    setLayout(gridbag);
+
+    gbc.gridwidth = GridBagConstraints.REMAINDER;
+    gbc.insets = new Insets(0,0,20,0);
+    gridbag.setConstraints(titleLabel,gbc);
+    add(titleLabel);
+
+    gbc.fill = GridBagConstraints.NONE;
+    gbc.gridwidth = 1;
+    gbc.insets = new Insets(0,0,0,0);
+    gridbag.setConstraints(promptLabel,gbc);
+    add(promptLabel);
+
+    gridbag.setConstraints(passwordField,gbc);
+    add(passwordField);
+    passwordField.addActionListener(this);
+
+    // gbc.ipady = 10;
+    gbc.gridwidth = GridBagConstraints.REMAINDER;
+    gbc.fill = GridBagConstraints.BOTH;
+    gbc.insets = new Insets(0,20,0,0);
+    gbc.ipadx = 30;
+    gridbag.setConstraints(okButton,gbc);
+    add(okButton);
+    okButton.addActionListener(this);
+  }
+
+  //
+  // Move keyboard focus to the default object, that is, the password
+  // text field.
+  //
+
+  public void moveFocusToDefaultField()
+  {
+    passwordField.requestFocus();
+  }
+
+  //
+  // This method is called when a button is pressed or return is
+  // pressed in the password text field.
+  //
+
+  public synchronized void actionPerformed(ActionEvent evt)
+  {
+    if (evt.getSource() == passwordField || evt.getSource() == okButton) {
+      passwordField.setEnabled(false);
+      notify();
+    }
+  }
+
+  //
+  // Wait for user entering a password, and return it as String.
+  //
+
+  public synchronized String getPassword() throws Exception
+  {
+    try {
+      wait();
+    } catch (InterruptedException e) { }
+    return passwordField.getText();
+  }
+
+}

java/com/tightvnc/vncviewer/ButtonPanel.java

@@ -0,0 +1,154 @@
+//
+//  Copyright (C) 2001,2002 HorizonLive.com, Inc.  All Rights Reserved.
+//  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// ButtonPanel class implements panel with four buttons in the
+// VNCViewer desktop window.
+//
+
+import java.awt.*;
+import java.awt.event.*;
+import java.io.*;
+
+class ButtonPanel extends Panel implements ActionListener {
+
+  VncViewer viewer;
+  Button disconnectButton;
+  Button optionsButton;
+  Button recordButton;
+  Button clipboardButton;
+  Button ctrlAltDelButton;
+  Button refreshButton;
+
+  ButtonPanel(VncViewer v) {
+    viewer = v;
+
+    setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
+    disconnectButton = new Button("Disconnect");
+    disconnectButton.setEnabled(false);
+    add(disconnectButton);
+    disconnectButton.addActionListener(this);
+    optionsButton = new Button("Options");
+    add(optionsButton);
+    optionsButton.addActionListener(this);
+    clipboardButton = new Button("Clipboard");
+    clipboardButton.setEnabled(false);
+    add(clipboardButton);
+    clipboardButton.addActionListener(this);
+    if (viewer.rec != null) {
+      recordButton = new Button("Record");
+      add(recordButton);
+      recordButton.addActionListener(this);
+    }
+    ctrlAltDelButton = new Button("Send Ctrl-Alt-Del");
+    ctrlAltDelButton.setEnabled(false);
+    add(ctrlAltDelButton);
+    ctrlAltDelButton.addActionListener(this);
+    refreshButton = new Button("Refresh");
+    refreshButton.setEnabled(false);
+    add(refreshButton);
+    refreshButton.addActionListener(this);
+  }
+
+  //
+  // Enable buttons on successful connection.
+  //
+
+  public void enableButtons() {
+    disconnectButton.setEnabled(true);
+    clipboardButton.setEnabled(true);
+    refreshButton.setEnabled(true);
+  }
+
+  //
+  // Disable all buttons on disconnect.
+  //
+
+  public void disableButtonsOnDisconnect() {
+    remove(disconnectButton);
+    disconnectButton = new Button("Hide desktop");
+    disconnectButton.setEnabled(true);
+    add(disconnectButton, 0);
+    disconnectButton.addActionListener(this);
+
+    optionsButton.setEnabled(false);
+    clipboardButton.setEnabled(false);
+    ctrlAltDelButton.setEnabled(false);
+    refreshButton.setEnabled(false);
+
+    validate();
+  }
+
+  //
+  // Enable/disable controls that should not be available in view-only
+  // mode.
+  //
+
+  public void enableRemoteAccessControls(boolean enable) {
+    ctrlAltDelButton.setEnabled(enable);
+  }
+
+  //
+  // Event processing.
+  //
+
+  public void actionPerformed(ActionEvent evt) {
+
+    viewer.moveFocusToDesktop();
+
+    if (evt.getSource() == disconnectButton) {
+      viewer.disconnect();
+
+    } else if (evt.getSource() == optionsButton) {
+      viewer.options.setVisible(!viewer.options.isVisible());
+
+    } else if (evt.getSource() == recordButton) {
+      viewer.rec.setVisible(!viewer.rec.isVisible());
+
+    } else if (evt.getSource() == clipboardButton) {
+      viewer.clipboard.setVisible(!viewer.clipboard.isVisible());
+
+    } else if (evt.getSource() == ctrlAltDelButton) {
+      try {
+        final int modifiers = InputEvent.CTRL_MASK | InputEvent.ALT_MASK;
+
+        KeyEvent ctrlAltDelEvent =
+          new KeyEvent(this, KeyEvent.KEY_PRESSED, 0, modifiers, 127);
+        viewer.rfb.writeKeyEvent(ctrlAltDelEvent);
+
+        ctrlAltDelEvent =
+          new KeyEvent(this, KeyEvent.KEY_RELEASED, 0, modifiers, 127);
+        viewer.rfb.writeKeyEvent(ctrlAltDelEvent);
+
+      } catch (IOException e) {
+        e.printStackTrace();
+      }
+    } else if (evt.getSource() == refreshButton) {
+      try {
+	RfbProto rfb = viewer.rfb;
+	rfb.writeFramebufferUpdateRequest(0, 0, rfb.framebufferWidth,
+					  rfb.framebufferHeight, false);
+      } catch (IOException e) {
+        e.printStackTrace();
+      }
+    }
+  }
+}
+

java/com/tightvnc/vncviewer/CapabilityInfo.java

@@ -0,0 +1,87 @@
+//
+//  Copyright (C) 2003 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// CapabilityInfo.java - A class to hold information about a
+// particular capability as used in the RFB protocol 3.130.
+//
+
+class CapabilityInfo {
+
+  // Public methods
+
+  public CapabilityInfo(int code,
+			String vendorSignature,
+			String nameSignature,
+			String description) {
+    this.code = code;
+    this.vendorSignature = vendorSignature;
+    this.nameSignature = nameSignature;
+    this.description = description;
+    enabled = false;
+  }
+
+  public CapabilityInfo(int code,
+			byte[] vendorSignature,
+			byte[] nameSignature) {
+    this.code = code;
+    this.vendorSignature = new String(vendorSignature);
+    this.nameSignature = new String(nameSignature);
+    this.description = null;
+    enabled = false;
+  }
+
+  public int getCode() {
+    return code;
+  }
+
+  public String getDescription() {
+    return description;
+  }
+
+  public boolean isEnabled() {
+    return enabled;
+  }
+
+  public void enable() {
+    enabled = true;
+  }
+
+  public boolean equals(CapabilityInfo other) {
+    return (other != null && this.code == other.code &&
+	    this.vendorSignature.equals(other.vendorSignature) &&
+	    this.nameSignature.equals(other.nameSignature));
+  }
+
+  public boolean enableIfEquals(CapabilityInfo other) {
+    if (this.equals(other))
+      enable();
+
+    return isEnabled();
+  }
+
+  // Protected data
+
+  protected int code;
+  protected String vendorSignature;
+  protected String nameSignature;
+
+  protected String description;
+  protected boolean enabled;
+}

java/com/tightvnc/vncviewer/CapsContainer.java

@@ -0,0 +1,103 @@
+//
+//  Copyright (C) 2003 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// CapsContainer.java - A container of capabilities as used in the RFB
+// protocol 3.130
+//
+
+import java.util.Vector;
+import java.util.Hashtable;
+
+class CapsContainer {
+
+  // Public methods
+
+  public CapsContainer() {
+    infoMap = new Hashtable(64, (float)0.25);
+    orderedList = new Vector(32, 8);
+  }
+
+  public void add(CapabilityInfo capinfo) {
+    Integer key = new Integer(capinfo.getCode());
+    infoMap.put(key, capinfo);
+  }
+
+  public void add(int code, String vendor, String name, String desc) {
+    Integer key = new Integer(code);
+    infoMap.put(key, new CapabilityInfo(code, vendor, name, desc));
+  }
+
+  public boolean isKnown(int code) {
+    return infoMap.containsKey(new Integer(code));
+  }
+
+  public CapabilityInfo getInfo(int code) {
+    return (CapabilityInfo)infoMap.get(new Integer(code));
+  }
+
+  public String getDescription(int code) {
+    CapabilityInfo capinfo = (CapabilityInfo)infoMap.get(new Integer(code));
+    if (capinfo == null)
+      return null;
+
+    return capinfo.getDescription();
+  }
+
+  public boolean enable(CapabilityInfo other) {
+    Integer key = new Integer(other.getCode());
+    CapabilityInfo capinfo = (CapabilityInfo)infoMap.get(key);
+    if (capinfo == null)
+      return false;
+
+    boolean enabled = capinfo.enableIfEquals(other);
+    if (enabled)
+      orderedList.addElement(key);
+
+    return enabled;
+  }
+
+  public boolean isEnabled(int code) {
+    CapabilityInfo capinfo = (CapabilityInfo)infoMap.get(new Integer(code));
+    if (capinfo == null)
+      return false;
+
+    return capinfo.isEnabled();
+  }
+
+  public int numEnabled() {
+    return orderedList.size();
+  }
+
+  public int getByOrder(int idx) {
+    int code;
+    try {
+      code = ((Integer)orderedList.elementAt(idx)).intValue();
+    } catch (ArrayIndexOutOfBoundsException e) {
+      code = 0;
+    }
+    return code;
+  }
+
+  // Protected data
+
+  protected Hashtable infoMap;
+  protected Vector orderedList;
+}
+

java/com/tightvnc/vncviewer/ClipboardFrame.java

@@ -0,0 +1,133 @@
+//
+//  Copyright (C) 2001 HorizonLive.com, Inc.  All Rights Reserved.
+//  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// Clipboard frame.
+//
+
+import java.awt.*;
+import java.awt.event.*;
+
+class ClipboardFrame extends Frame
+  implements WindowListener, ActionListener {
+
+  TextArea textArea;
+  Button clearButton, closeButton;
+  String selection;
+  VncViewer viewer;
+
+  //
+  // Constructor.
+  //
+
+  ClipboardFrame(VncViewer v) {
+    super("TightVNC Clipboard");
+
+    viewer = v;
+
+    GridBagLayout gridbag = new GridBagLayout();
+    setLayout(gridbag);
+
+    GridBagConstraints gbc = new GridBagConstraints();
+    gbc.gridwidth = GridBagConstraints.REMAINDER;
+    gbc.fill = GridBagConstraints.BOTH;
+    gbc.weighty = 1.0;
+
+    textArea = new TextArea(5, 40);
+    gridbag.setConstraints(textArea, gbc);
+    add(textArea);
+
+    gbc.fill = GridBagConstraints.HORIZONTAL;
+    gbc.weightx = 1.0;
+    gbc.weighty = 0.0;
+    gbc.gridwidth = 1;
+
+    clearButton = new Button("Clear");
+    gridbag.setConstraints(clearButton, gbc);
+    add(clearButton);
+    clearButton.addActionListener(this);
+
+    closeButton = new Button("Close");
+    gridbag.setConstraints(closeButton, gbc);
+    add(closeButton);
+    closeButton.addActionListener(this);
+
+    pack();
+
+    addWindowListener(this);
+  }
+
+
+  //
+  // Set the cut text from the RFB server.
+  //
+
+  void setCutText(String text) {
+    selection = text;
+    textArea.setText(text);
+    if (isVisible()) {
+      textArea.selectAll();
+    }
+  }
+
+
+  //
+  // When the focus leaves the window, see if we have new cut text and
+  // if so send it to the RFB server.
+  //
+
+  public void windowDeactivated (WindowEvent evt) {
+    if (selection != null && !selection.equals(textArea.getText())) {
+      selection = textArea.getText();
+      viewer.setCutText(selection);
+    }
+  }
+
+  //
+  // Close our window properly.
+  //
+
+  public void windowClosing(WindowEvent evt) {
+    setVisible(false);
+  }
+
+  //
+  // Ignore window events we're not interested in.
+  //
+
+  public void windowActivated(WindowEvent evt) {}
+  public void windowOpened(WindowEvent evt) {}
+  public void windowClosed(WindowEvent evt) {}
+  public void windowIconified(WindowEvent evt) {}
+  public void windowDeiconified(WindowEvent evt) {}
+
+
+  //
+  // Respond to button presses
+  //
+
+  public void actionPerformed(ActionEvent evt) {
+    if (evt.getSource() == clearButton) {
+      textArea.setText("");
+    } else if (evt.getSource() == closeButton) {
+      setVisible(false);
+    }
+  }
+}

java/com/tightvnc/vncviewer/DesCipher.java

@@ -0,0 +1,496 @@
+//
+// This DES class has been extracted from package Acme.Crypto for use in VNC.
+// The bytebit[] array has been reversed so that the most significant bit
+// in each byte of the key is ignored, not the least significant.  Also the
+// unnecessary odd parity code has been removed.
+//
+// These changes are:
+//  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
+//
+// This software is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+
+// DesCipher - the DES encryption method
+//
+// The meat of this code is by Dave Zimmerman <dzimm@widget.com>, and is:
+//
+// Copyright (c) 1996 Widget Workshop, Inc. All Rights Reserved.
+//
+// Permission to use, copy, modify, and distribute this software
+// and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
+// without fee is hereby granted, provided that this copyright notice is kept 
+// intact. 
+// 
+// WIDGET WORKSHOP MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY
+// OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+// TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+// PARTICULAR PURPOSE, OR NON-INFRINGEMENT. WIDGET WORKSHOP SHALL NOT BE LIABLE
+// FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+// DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
+// 
+// THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
+// CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
+// PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
+// NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
+// SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
+// SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
+// PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").  WIDGET WORKSHOP
+// SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
+// HIGH RISK ACTIVITIES.
+//
+//
+// The rest is:
+//
+// Copyright (C) 1996 by Jef Poskanzer <jef@acme.com>.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+// Visit the ACME Labs Java page for up-to-date versions of this and other
+// fine Java utilities: http://www.acme.com/java/
+
+
+import java.io.*;
+
+/// The DES encryption method.
+// <P>
+// This is surprisingly fast, for pure Java.  On a SPARC 20, wrapped
+// in Acme.Crypto.EncryptedOutputStream or Acme.Crypto.EncryptedInputStream,
+// it does around 7000 bytes/second.
+// <P>
+// Most of this code is by Dave Zimmerman <dzimm@widget.com>, and is
+// Copyright (c) 1996 Widget Workshop, Inc.  See the source file for details.
+// <P>
+// <A HREF="/resources/classes/Acme/Crypto/DesCipher.java">Fetch the software.</A><BR>
+// <A HREF="/resources/classes/Acme.tar.Z">Fetch the entire Acme package.</A>
+// <P>
+// @see Des3Cipher
+// @see EncryptedOutputStream
+// @see EncryptedInputStream
+
+public class DesCipher
+    {
+
+    // Constructor, byte-array key.
+    public DesCipher( byte[] key )
+	{
+	setKey( key );
+	}
+
+    // Key routines.
+
+    private int[] encryptKeys = new int[32];
+    private int[] decryptKeys = new int[32];
+
+    /// Set the key.
+    public void setKey( byte[] key )
+	{
+	deskey( key, true, encryptKeys );
+	deskey( key, false, decryptKeys );
+	}
+
+    // Turn an 8-byte key into internal keys.
+    private void deskey( byte[] keyBlock, boolean encrypting, int[] KnL )
+	{
+	int i, j, l, m, n;
+	int[] pc1m = new int[56];
+	int[] pcr = new int[56];
+	int[] kn = new int[32];
+
+	for ( j = 0; j < 56; ++j )
+	    {
+	    l = pc1[j];
+	    m = l & 07;
+	    pc1m[j] = ( (keyBlock[l >>> 3] & bytebit[m]) != 0 )? 1: 0;
+	    }
+
+	for ( i = 0; i < 16; ++i )
+	    {
+	    if ( encrypting )
+		m = i << 1;
+	    else
+		m = (15-i) << 1;
+	    n = m+1;
+	    kn[m] = kn[n] = 0;
+	    for ( j = 0; j < 28; ++j )
+		{
+		l = j+totrot[i];
+		if ( l < 28 )
+		    pcr[j] = pc1m[l];
+		else
+		    pcr[j] = pc1m[l-28];
+		}
+	    for ( j=28; j < 56; ++j )
+		{
+		l = j+totrot[i];
+		if ( l < 56 )
+		    pcr[j] = pc1m[l];
+		else
+		    pcr[j] = pc1m[l-28];
+		}
+	    for ( j = 0; j < 24; ++j )
+		{
+		if ( pcr[pc2[j]] != 0 )
+		    kn[m] |= bigbyte[j];
+		if ( pcr[pc2[j+24]] != 0 )
+		    kn[n] |= bigbyte[j];
+		}
+	    }
+	cookey( kn, KnL );
+	}
+
+    private void cookey( int[] raw, int KnL[] )
+	{
+	int raw0, raw1;
+	int rawi, KnLi;
+	int i;
+
+	for ( i = 0, rawi = 0, KnLi = 0; i < 16; ++i )
+	    {
+	    raw0 = raw[rawi++];
+	    raw1 = raw[rawi++];
+	    KnL[KnLi]  = (raw0 & 0x00fc0000) <<   6;
+	    KnL[KnLi] |= (raw0 & 0x00000fc0) <<  10;
+	    KnL[KnLi] |= (raw1 & 0x00fc0000) >>> 10;
+	    KnL[KnLi] |= (raw1 & 0x00000fc0) >>>  6;
+	    ++KnLi;
+	    KnL[KnLi]  = (raw0 & 0x0003f000) <<  12;
+	    KnL[KnLi] |= (raw0 & 0x0000003f) <<  16;
+	    KnL[KnLi] |= (raw1 & 0x0003f000) >>>  4;
+	    KnL[KnLi] |= (raw1 & 0x0000003f);
+	    ++KnLi;
+	    }
+	}
+
+
+    // Block encryption routines.
+
+    private int[] tempInts = new int[2];
+
+    /// Encrypt a block of eight bytes.
+    public void encrypt( byte[] clearText, int clearOff, byte[] cipherText, int cipherOff )
+	{
+	squashBytesToInts( clearText, clearOff, tempInts, 0, 2 );
+	des( tempInts, tempInts, encryptKeys );
+	spreadIntsToBytes( tempInts, 0, cipherText, cipherOff, 2 );
+	}
+
+    /// Decrypt a block of eight bytes.
+    public void decrypt( byte[] cipherText, int cipherOff, byte[] clearText, int clearOff )
+	{
+	squashBytesToInts( cipherText, cipherOff, tempInts, 0, 2 );
+	des( tempInts, tempInts, decryptKeys );
+	spreadIntsToBytes( tempInts, 0, clearText, clearOff, 2 );
+	}
+
+    // The DES function.
+    private void des( int[] inInts, int[] outInts, int[] keys )
+	{
+	int fval, work, right, leftt;
+	int round;
+	int keysi = 0;
+
+	leftt = inInts[0];
+	right = inInts[1];
+
+	work   = ((leftt >>>  4) ^ right) & 0x0f0f0f0f;
+	right ^= work;
+	leftt ^= (work << 4);
+
+	work   = ((leftt >>> 16) ^ right) & 0x0000ffff;
+	right ^= work;
+	leftt ^= (work << 16);
+
+	work   = ((right >>>  2) ^ leftt) & 0x33333333;
+	leftt ^= work;
+	right ^= (work << 2);
+
+	work   = ((right >>>  8) ^ leftt) & 0x00ff00ff;
+	leftt ^= work;
+	right ^= (work << 8);
+	right  = (right << 1) | ((right >>> 31) & 1);
+
+	work   = (leftt ^ right) & 0xaaaaaaaa;
+	leftt ^= work;
+	right ^= work;
+	leftt  = (leftt << 1) | ((leftt >>> 31) & 1);
+
+	for ( round = 0; round < 8; ++round )
+	    {
+	    work   = (right << 28) | (right >>> 4);
+	    work  ^= keys[keysi++];
+	    fval   = SP7[ work	       & 0x0000003f ];
+	    fval  |= SP5[(work >>>  8) & 0x0000003f ];
+	    fval  |= SP3[(work >>> 16) & 0x0000003f ];
+	    fval  |= SP1[(work >>> 24) & 0x0000003f ];
+	    work   = right ^ keys[keysi++];
+	    fval  |= SP8[ work         & 0x0000003f ];
+	    fval  |= SP6[(work >>>  8) & 0x0000003f ];
+	    fval  |= SP4[(work >>> 16) & 0x0000003f ];
+	    fval  |= SP2[(work >>> 24) & 0x0000003f ];
+	    leftt ^= fval;
+	    work   = (leftt << 28) | (leftt >>> 4);
+	    work  ^= keys[keysi++];
+	    fval   = SP7[ work	       & 0x0000003f ];
+	    fval  |= SP5[(work >>>  8) & 0x0000003f ];
+	    fval  |= SP3[(work >>> 16) & 0x0000003f ];
+	    fval  |= SP1[(work >>> 24) & 0x0000003f ];
+	    work   = leftt ^ keys[keysi++];
+	    fval  |= SP8[ work	       & 0x0000003f ];
+	    fval  |= SP6[(work >>>  8) & 0x0000003f ];
+	    fval  |= SP4[(work >>> 16) & 0x0000003f ];
+	    fval  |= SP2[(work >>> 24) & 0x0000003f ];
+	    right ^= fval;
+	    }
+
+	right  = (right << 31) | (right >>> 1);
+	work   = (leftt ^ right) & 0xaaaaaaaa;
+	leftt ^= work;
+	right ^= work;
+	leftt  = (leftt << 31) | (leftt >>> 1);
+	work   = ((leftt >>>  8) ^ right) & 0x00ff00ff;
+	right ^= work;
+	leftt ^= (work << 8);
+	work   = ((leftt >>>  2) ^ right) & 0x33333333;
+	right ^= work;
+	leftt ^= (work << 2);
+	work   = ((right >>> 16) ^ leftt) & 0x0000ffff;
+	leftt ^= work;
+	right ^= (work << 16);
+	work   = ((right >>>  4) ^ leftt) & 0x0f0f0f0f;
+	leftt ^= work;
+	right ^= (work << 4);
+	outInts[0] = right;
+	outInts[1] = leftt;
+	}
+
+
+    // Tables, permutations, S-boxes, etc.
+
+    private static byte[] bytebit = {
+	(byte)0x01, (byte)0x02, (byte)0x04, (byte)0x08,
+	(byte)0x10, (byte)0x20, (byte)0x40, (byte)0x80
+	};
+    private static int[] bigbyte = {
+	0x800000, 0x400000, 0x200000, 0x100000,
+	0x080000, 0x040000, 0x020000, 0x010000,
+	0x008000, 0x004000, 0x002000, 0x001000,
+	0x000800, 0x000400, 0x000200, 0x000100,
+	0x000080, 0x000040, 0x000020, 0x000010,
+	0x000008, 0x000004, 0x000002, 0x000001
+	};
+    private static byte[] pc1 = {
+         (byte)56, (byte)48, (byte)40, (byte)32, (byte)24, (byte)16, (byte) 8,
+      (byte) 0, (byte)57, (byte)49, (byte)41, (byte)33, (byte)25, (byte)17,
+	 (byte) 9, (byte) 1, (byte)58, (byte)50, (byte)42, (byte)34, (byte)26,
+      (byte)18, (byte)10, (byte) 2, (byte)59, (byte)51, (byte)43, (byte)35,
+	 (byte)62, (byte)54, (byte)46, (byte)38, (byte)30, (byte)22, (byte)14,
+      (byte) 6, (byte)61, (byte)53, (byte)45, (byte)37, (byte)29, (byte)21,
+	 (byte)13, (byte) 5, (byte)60, (byte)52, (byte)44, (byte)36, (byte)28,
+      (byte)20, (byte)12, (byte) 4, (byte)27, (byte)19, (byte)11, (byte)3
+	};
+    private static int[] totrot = {
+        1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28
+	};
+
+    private static byte[] pc2 = {
+	(byte)13, (byte)16, (byte)10, (byte)23, (byte) 0, (byte) 4,
+	          (byte) 2, (byte)27, (byte)14, (byte) 5, (byte)20, (byte) 9,
+	(byte)22, (byte)18, (byte)11, (byte)3 , (byte)25, (byte) 7,
+	          (byte)15, (byte) 6, (byte)26, (byte)19, (byte)12, (byte) 1,
+	(byte)40, (byte)51, (byte)30, (byte)36, (byte)46, (byte)54,
+	          (byte)29, (byte)39, (byte)50, (byte)44, (byte)32, (byte)47,
+	(byte)43, (byte)48, (byte)38, (byte)55, (byte)33, (byte)52,
+	          (byte)45, (byte)41, (byte)49, (byte)35, (byte)28, (byte)31,
+	};
+
+    private static int[] SP1 = {
+        0x01010400, 0x00000000, 0x00010000, 0x01010404,
+	0x01010004, 0x00010404, 0x00000004, 0x00010000,
+	0x00000400, 0x01010400, 0x01010404, 0x00000400,
+	0x01000404, 0x01010004, 0x01000000, 0x00000004,
+	0x00000404, 0x01000400, 0x01000400, 0x00010400,
+	0x00010400, 0x01010000, 0x01010000, 0x01000404,
+	0x00010004, 0x01000004, 0x01000004, 0x00010004,
+	0x00000000, 0x00000404, 0x00010404, 0x01000000,
+	0x00010000, 0x01010404, 0x00000004, 0x01010000,
+	0x01010400, 0x01000000, 0x01000000, 0x00000400,
+	0x01010004, 0x00010000, 0x00010400, 0x01000004,
+	0x00000400, 0x00000004, 0x01000404, 0x00010404,
+	0x01010404, 0x00010004, 0x01010000, 0x01000404,
+	0x01000004, 0x00000404, 0x00010404, 0x01010400,
+	0x00000404, 0x01000400, 0x01000400, 0x00000000,
+	0x00010004, 0x00010400, 0x00000000, 0x01010004
+	};
+    private static int[] SP2 = {
+	0x80108020, 0x80008000, 0x00008000, 0x00108020,
+	0x00100000, 0x00000020, 0x80100020, 0x80008020,
+	0x80000020, 0x80108020, 0x80108000, 0x80000000,
+	0x80008000, 0x00100000, 0x00000020, 0x80100020,
+	0x00108000, 0x00100020, 0x80008020, 0x00000000,
+	0x80000000, 0x00008000, 0x00108020, 0x80100000,
+	0x00100020, 0x80000020, 0x00000000, 0x00108000,
+	0x00008020, 0x80108000, 0x80100000, 0x00008020,
+	0x00000000, 0x00108020, 0x80100020, 0x00100000,
+	0x80008020, 0x80100000, 0x80108000, 0x00008000,
+	0x80100000, 0x80008000, 0x00000020, 0x80108020,
+	0x00108020, 0x00000020, 0x00008000, 0x80000000,
+	0x00008020, 0x80108000, 0x00100000, 0x80000020,
+	0x00100020, 0x80008020, 0x80000020, 0x00100020,
+	0x00108000, 0x00000000, 0x80008000, 0x00008020,
+	0x80000000, 0x80100020, 0x80108020, 0x00108000
+	};
+    private static int[] SP3 = {
+	0x00000208, 0x08020200, 0x00000000, 0x08020008,
+	0x08000200, 0x00000000, 0x00020208, 0x08000200,
+	0x00020008, 0x08000008, 0x08000008, 0x00020000,
+	0x08020208, 0x00020008, 0x08020000, 0x00000208,
+	0x08000000, 0x00000008, 0x08020200, 0x00000200,
+	0x00020200, 0x08020000, 0x08020008, 0x00020208,
+	0x08000208, 0x00020200, 0x00020000, 0x08000208,
+	0x00000008, 0x08020208, 0x00000200, 0x08000000,
+	0x08020200, 0x08000000, 0x00020008, 0x00000208,
+	0x00020000, 0x08020200, 0x08000200, 0x00000000,
+	0x00000200, 0x00020008, 0x08020208, 0x08000200,
+	0x08000008, 0x00000200, 0x00000000, 0x08020008,
+	0x08000208, 0x00020000, 0x08000000, 0x08020208,
+	0x00000008, 0x00020208, 0x00020200, 0x08000008,
+	0x08020000, 0x08000208, 0x00000208, 0x08020000,
+	0x00020208, 0x00000008, 0x08020008, 0x00020200
+	};
+    private static int[] SP4 = {
+	0x00802001, 0x00002081, 0x00002081, 0x00000080,
+	0x00802080, 0x00800081, 0x00800001, 0x00002001,
+	0x00000000, 0x00802000, 0x00802000, 0x00802081,
+	0x00000081, 0x00000000, 0x00800080, 0x00800001,
+	0x00000001, 0x00002000, 0x00800000, 0x00802001,
+	0x00000080, 0x00800000, 0x00002001, 0x00002080,
+	0x00800081, 0x00000001, 0x00002080, 0x00800080,
+	0x00002000, 0x00802080, 0x00802081, 0x00000081,
+	0x00800080, 0x00800001, 0x00802000, 0x00802081,
+	0x00000081, 0x00000000, 0x00000000, 0x00802000,
+	0x00002080, 0x00800080, 0x00800081, 0x00000001,
+	0x00802001, 0x00002081, 0x00002081, 0x00000080,
+	0x00802081, 0x00000081, 0x00000001, 0x00002000,
+	0x00800001, 0x00002001, 0x00802080, 0x00800081,
+	0x00002001, 0x00002080, 0x00800000, 0x00802001,
+	0x00000080, 0x00800000, 0x00002000, 0x00802080
+	};
+    private static int[] SP5 = {
+	0x00000100, 0x02080100, 0x02080000, 0x42000100,
+	0x00080000, 0x00000100, 0x40000000, 0x02080000,
+	0x40080100, 0x00080000, 0x02000100, 0x40080100,
+	0x42000100, 0x42080000, 0x00080100, 0x40000000,
+	0x02000000, 0x40080000, 0x40080000, 0x00000000,
+	0x40000100, 0x42080100, 0x42080100, 0x02000100,
+	0x42080000, 0x40000100, 0x00000000, 0x42000000,
+	0x02080100, 0x02000000, 0x42000000, 0x00080100,
+	0x00080000, 0x42000100, 0x00000100, 0x02000000,
+	0x40000000, 0x02080000, 0x42000100, 0x40080100,
+	0x02000100, 0x40000000, 0x42080000, 0x02080100,
+	0x40080100, 0x00000100, 0x02000000, 0x42080000,
+	0x42080100, 0x00080100, 0x42000000, 0x42080100,
+	0x02080000, 0x00000000, 0x40080000, 0x42000000,
+	0x00080100, 0x02000100, 0x40000100, 0x00080000,
+	0x00000000, 0x40080000, 0x02080100, 0x40000100
+	};
+    private static int[] SP6 = {
+	0x20000010, 0x20400000, 0x00004000, 0x20404010,
+	0x20400000, 0x00000010, 0x20404010, 0x00400000,
+	0x20004000, 0x00404010, 0x00400000, 0x20000010,
+	0x00400010, 0x20004000, 0x20000000, 0x00004010,
+	0x00000000, 0x00400010, 0x20004010, 0x00004000,
+	0x00404000, 0x20004010, 0x00000010, 0x20400010,
+	0x20400010, 0x00000000, 0x00404010, 0x20404000,
+	0x00004010, 0x00404000, 0x20404000, 0x20000000,
+	0x20004000, 0x00000010, 0x20400010, 0x00404000,
+	0x20404010, 0x00400000, 0x00004010, 0x20000010,
+	0x00400000, 0x20004000, 0x20000000, 0x00004010,
+	0x20000010, 0x20404010, 0x00404000, 0x20400000,
+	0x00404010, 0x20404000, 0x00000000, 0x20400010,
+	0x00000010, 0x00004000, 0x20400000, 0x00404010,
+	0x00004000, 0x00400010, 0x20004010, 0x00000000,
+	0x20404000, 0x20000000, 0x00400010, 0x20004010
+	};
+    private static int[] SP7 = {
+	0x00200000, 0x04200002, 0x04000802, 0x00000000,
+	0x00000800, 0x04000802, 0x00200802, 0x04200800,
+	0x04200802, 0x00200000, 0x00000000, 0x04000002,
+	0x00000002, 0x04000000, 0x04200002, 0x00000802,
+	0x04000800, 0x00200802, 0x00200002, 0x04000800,
+	0x04000002, 0x04200000, 0x04200800, 0x00200002,
+	0x04200000, 0x00000800, 0x00000802, 0x04200802,
+	0x00200800, 0x00000002, 0x04000000, 0x00200800,
+	0x04000000, 0x00200800, 0x00200000, 0x04000802,
+	0x04000802, 0x04200002, 0x04200002, 0x00000002,
+	0x00200002, 0x04000000, 0x04000800, 0x00200000,
+	0x04200800, 0x00000802, 0x00200802, 0x04200800,
+	0x00000802, 0x04000002, 0x04200802, 0x04200000,
+	0x00200800, 0x00000000, 0x00000002, 0x04200802,
+	0x00000000, 0x00200802, 0x04200000, 0x00000800,
+	0x04000002, 0x04000800, 0x00000800, 0x00200002
+	};
+    private static int[] SP8 = {
+	0x10001040, 0x00001000, 0x00040000, 0x10041040,
+	0x10000000, 0x10001040, 0x00000040, 0x10000000,
+	0x00040040, 0x10040000, 0x10041040, 0x00041000,
+	0x10041000, 0x00041040, 0x00001000, 0x00000040,
+	0x10040000, 0x10000040, 0x10001000, 0x00001040,
+	0x00041000, 0x00040040, 0x10040040, 0x10041000,
+	0x00001040, 0x00000000, 0x00000000, 0x10040040,
+	0x10000040, 0x10001000, 0x00041040, 0x00040000,
+	0x00041040, 0x00040000, 0x10041000, 0x00001000,
+	0x00000040, 0x10040040, 0x00001000, 0x00041040,
+	0x10001000, 0x00000040, 0x10000040, 0x10040000,
+	0x10040040, 0x10000000, 0x00040000, 0x10001040,
+	0x00000000, 0x10041040, 0x00040040, 0x10000040,
+	0x10040000, 0x10001000, 0x10001040, 0x00000000,
+	0x10041040, 0x00041000, 0x00041000, 0x00001040,
+	0x00001040, 0x00040040, 0x10000000, 0x10041000
+	};
+
+    // Routines taken from other parts of the Acme utilities.
+
+    /// Squash bytes down to ints.
+    public static void squashBytesToInts( byte[] inBytes, int inOff, int[] outInts, int outOff, int intLen )
+        {
+	for ( int i = 0; i < intLen; ++i )
+	    outInts[outOff + i] = 
+		( ( inBytes[inOff + i * 4    ] & 0xff ) << 24 ) |
+		( ( inBytes[inOff + i * 4 + 1] & 0xff ) << 16 ) |
+		( ( inBytes[inOff + i * 4 + 2] & 0xff ) <<  8 ) |
+		  ( inBytes[inOff + i * 4 + 3] & 0xff );
+        }
+
+    /// Spread ints into bytes.
+    public static void spreadIntsToBytes( int[] inInts, int inOff, byte[] outBytes, int outOff, int intLen )
+        {
+	for ( int i = 0; i < intLen; ++i )
+	    {
+	    outBytes[outOff + i * 4    ] = (byte) ( inInts[inOff + i] >>> 24 );
+	    outBytes[outOff + i * 4 + 1] = (byte) ( inInts[inOff + i] >>> 16 );
+	    outBytes[outOff + i * 4 + 2] = (byte) ( inInts[inOff + i] >>>  8 );
+	    outBytes[outOff + i * 4 + 3] = (byte)   inInts[inOff + i];
+	    }
+        }
+    }

java/com/tightvnc/vncviewer/HTTPConnectSocket.java

@@ -0,0 +1,59 @@
+//
+//  Copyright (C) 2002 Constantin Kaplinsky, Inc.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// HTTPConnectSocket.java together with HTTPConnectSocketFactory.java
+// implement an alternate way to connect to VNC servers via one or two
+// HTTP proxies supporting the HTTP CONNECT method.
+//
+
+import java.net.*;
+import java.io.*;
+
+class HTTPConnectSocket extends Socket {
+
+  public HTTPConnectSocket(String host, int port,
+			   String proxyHost, int proxyPort)
+    throws IOException {
+
+    // Connect to the specified HTTP proxy
+    super(proxyHost, proxyPort);
+
+    // Send the CONNECT request
+    getOutputStream().write(("CONNECT " + host + ":" + port +
+			     " HTTP/1.0\r\n\r\n").getBytes());
+
+    // Read the first line of the response
+    DataInputStream is = new DataInputStream(getInputStream());
+    String str = is.readLine();
+
+    // Check the HTTP error code -- it should be "200" on success
+    if (!str.startsWith("HTTP/1.0 200 ")) {
+      if (str.startsWith("HTTP/1.0 "))
+	str = str.substring(9);
+      throw new IOException("Proxy reports \"" + str + "\"");
+    }
+
+    // Success -- skip remaining HTTP headers
+    do {
+      str = is.readLine();
+    } while (str.length() != 0);
+  }
+}
+

java/com/tightvnc/vncviewer/HTTPConnectSocketFactory.java

@@ -0,0 +1,86 @@
+//
+//  Copyright (C) 2002 Constantin Kaplinsky, Inc.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// HTTPConnectSocketFactory.java together with HTTPConnectSocket.java
+// implement an alternate way to connect to VNC servers via one or two
+// HTTP proxies supporting the HTTP CONNECT method.
+//
+
+import java.applet.*;
+import java.net.*;
+import java.io.*;
+
+class HTTPConnectSocketFactory implements SocketFactory {
+
+  public Socket createSocket(String host, int port, Applet applet)
+    throws IOException {
+
+    return createSocket(host, port,
+			applet.getParameter("PROXYHOST1"),
+			applet.getParameter("PROXYPORT1"));
+  }
+
+  public Socket createSocket(String host, int port, String[] args)
+    throws IOException {
+
+    return createSocket(host, port,
+			readArg(args, "PROXYHOST1"),
+			readArg(args, "PROXYPORT1"));
+  }
+
+  public Socket createSocket(String host, int port,
+			     String proxyHost, String proxyPortStr)
+    throws IOException {
+
+    int proxyPort = 0;
+    if (proxyPortStr != null) {
+      try {
+	proxyPort = Integer.parseInt(proxyPortStr);
+      } catch (NumberFormatException e) { }
+    }
+
+    if (proxyHost == null || proxyPort == 0) {
+      System.out.println("Incomplete parameter list for HTTPConnectSocket");
+      return new Socket(host, port);
+    }
+
+    System.out.println("HTTP CONNECT via proxy " + proxyHost +
+		       " port " + proxyPort);
+    HTTPConnectSocket s =
+      new HTTPConnectSocket(host, port, proxyHost, proxyPort);
+
+    return (Socket)s;
+  }
+
+  private String readArg(String[] args, String name) {
+
+    for (int i = 0; i < args.length; i += 2) {
+      if (args[i].equalsIgnoreCase(name)) {
+	try {
+	  return args[i+1];
+	} catch (Exception e) {
+	  return null;
+	}
+      }
+    }
+    return null;
+  }
+}
+

java/com/tightvnc/vncviewer/InStream.java

@@ -0,0 +1,177 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+//
+// rdr::InStream marshalls data from a buffer stored in RDR (RFB Data
+// Representation).
+//
+
+abstract public class InStream {
+
+  // check() ensures there is buffer data for at least one item of size
+  // itemSize bytes.  Returns the number of items in the buffer (up to a
+  // maximum of nItems).
+
+  public final int check(int itemSize, int nItems) throws Exception {
+    if (ptr + itemSize * nItems > end) {
+      if (ptr + itemSize > end)
+        return overrun(itemSize, nItems);
+
+      nItems = (end - ptr) / itemSize;
+    }
+    return nItems;
+  }
+
+  public final void check(int itemSize) throws Exception {
+    if (ptr + itemSize > end)
+      overrun(itemSize, 1);
+  }
+
+  // readU/SN() methods read unsigned and signed N-bit integers.
+
+  public final int readS8() throws Exception {
+    check(1); return b[ptr++];
+  }
+
+  public final int readS16() throws Exception {
+    check(2); int b0 = b[ptr++];
+    int b1 = b[ptr++] & 0xff; return b0 << 8 | b1;
+  }
+
+  public final int readS32() throws Exception {
+    check(4); int b0 = b[ptr++];
+    int b1 = b[ptr++] & 0xff;
+    int b2 = b[ptr++] & 0xff;
+    int b3 = b[ptr++] & 0xff;
+    return b0 << 24 | b1 << 16 | b2 << 8 | b3;
+  }
+
+  public final int readU8() throws Exception {
+    return readS8() & 0xff;
+  }
+
+  public final int readU16() throws Exception {
+    return readS16() & 0xffff;
+  }
+
+  public final int readU32() throws Exception {
+    return readS32() & 0xffffffff;
+  }
+
+  // readString() reads a string - a U32 length followed by the data.
+
+  public final String readString() throws Exception {
+    int len = readU32();
+    if (len > maxStringLength)
+      throw new Exception("InStream max string length exceeded");
+
+    char[] str = new char[len];
+    int i = 0;
+    while (i < len) {
+      int j = i + check(1, len - i);
+      while (i < j) {
+	str[i++] = (char)b[ptr++];
+      }
+    }
+
+    return new String(str);
+  }
+
+  // maxStringLength protects against allocating a huge buffer.  Set it
+  // higher if you need longer strings.
+
+  public static int maxStringLength = 65535;
+
+  public final void skip(int bytes) throws Exception {
+    while (bytes > 0) {
+      int n = check(1, bytes);
+      ptr += n;
+      bytes -= n;
+    }
+  }
+
+  // readBytes() reads an exact number of bytes into an array at an offset.
+
+  public void readBytes(byte[] data, int offset, int length) throws Exception {
+    int offsetEnd = offset + length;
+    while (offset < offsetEnd) {
+      int n = check(1, offsetEnd - offset);
+      System.arraycopy(b, ptr, data, offset, n);
+      ptr += n;
+      offset += n;
+    }
+  }
+
+  // readOpaqueN() reads a quantity "without byte-swapping".  Because java has
+  // no byte-ordering, we just use big-endian.
+
+  public final int readOpaque8() throws Exception {
+    return readU8();
+  }
+
+  public final int readOpaque16() throws Exception {
+    return readU16();
+  }
+
+  public final int readOpaque32() throws Exception {
+    return readU32();
+  }
+
+  public final int readOpaque24A() throws Exception {
+    check(3); int b0 = b[ptr++];
+    int b1 = b[ptr++]; int b2 = b[ptr++];
+    return b0 << 24 | b1 << 16 | b2 << 8;
+  }
+
+  public final int readOpaque24B() throws Exception {
+    check(3); int b0 = b[ptr++];
+    int b1 = b[ptr++]; int b2 = b[ptr++];
+    return b0 << 16 | b1 << 8 | b2;
+  }
+
+  // pos() returns the position in the stream.
+
+  abstract public int pos();
+
+  // bytesAvailable() returns true if at least one byte can be read from the
+  // stream without blocking.  i.e. if false is returned then readU8() would
+  // block.
+
+  public boolean bytesAvailable() { return end != ptr; }
+
+  // getbuf(), getptr(), getend() and setptr() are "dirty" methods which allow
+  // you to manipulate the buffer directly.  This is useful for a stream which
+  // is a wrapper around an underlying stream.
+
+  public final byte[] getbuf() { return b; }
+  public final int getptr() { return ptr; }
+  public final int getend() { return end; }
+  public final void setptr(int p) { ptr = p; }
+
+  // overrun() is implemented by a derived class to cope with buffer overrun.
+  // It ensures there are at least itemSize bytes of buffer data.  Returns
+  // the number of items in the buffer (up to a maximum of nItems).  itemSize
+  // is supposed to be "small" (a few bytes).
+
+  abstract protected int overrun(int itemSize, int nItems) throws Exception;
+
+  protected InStream() {}
+  protected byte[] b;
+  protected int ptr;
+  protected int end;
+}

java/com/tightvnc/vncviewer/LICENCE.TXT

@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+	  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+	 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+    USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.

java/com/tightvnc/vncviewer/MANIFEST.MF

@@ -0,0 +1,2 @@
+Manifest-Version: 1.0
+Main-Class: VncViewer

java/com/tightvnc/vncviewer/Makefile

@@ -0,0 +1,47 @@
+#
+# Making the VNC applet.
+#
+
+CP = cp
+JC = javac
+JCFLAGS = -target 1.1
+JAR = jar
+ARCHIVE = VncViewer.jar
+MANIFEST = MANIFEST.MF
+PAGES = index.vnc
+INSTALL_DIR = /usr/local/vnc/classes
+
+CLASSES = VncViewer.class RfbProto.class AuthPanel.class VncCanvas.class \
+	  VncCanvas2.class \
+	  OptionsFrame.class ClipboardFrame.class ButtonPanel.class \
+	  DesCipher.class CapabilityInfo.class CapsContainer.class \
+	  RecordingFrame.class SessionRecorder.class \
+	  SocketFactory.class HTTPConnectSocketFactory.class \
+	  HTTPConnectSocket.class ReloginPanel.class \
+	  InStream.class MemInStream.class ZlibInStream.class
+
+SOURCES = VncViewer.java RfbProto.java AuthPanel.java VncCanvas.java \
+	  VncCanvas2.java \
+	  OptionsFrame.java ClipboardFrame.java ButtonPanel.java \
+	  DesCipher.java CapabilityInfo.java CapsContainer.java \
+	  RecordingFrame.java SessionRecorder.java \
+	  SocketFactory.java HTTPConnectSocketFactory.java \
+	  HTTPConnectSocket.java ReloginPanel.java \
+	  InStream.java MemInStream.java ZlibInStream.java
+
+all: $(CLASSES) $(ARCHIVE)
+
+$(CLASSES): $(SOURCES)
+	$(JC) $(JCFLAGS) -O $(SOURCES)
+
+$(ARCHIVE): $(CLASSES) $(MANIFEST)
+	$(JAR) cfm $(ARCHIVE) $(MANIFEST) $(CLASSES)
+
+install: $(CLASSES) $(ARCHIVE)
+	$(CP) $(CLASSES) $(ARCHIVE) $(PAGES) $(INSTALL_DIR)
+
+export:: $(CLASSES) $(ARCHIVE) $(PAGES)
+	@$(ExportJavaClasses)
+
+clean::
+	$(RM) *.class *.jar

java/com/tightvnc/vncviewer/MemInStream.java

@@ -0,0 +1,32 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+public class MemInStream extends InStream {
+
+  public MemInStream(byte[] data, int offset, int len) {
+    b = data;
+    ptr = offset;
+    end = offset + len;
+  }
+
+  public int pos() { return ptr; }
+
+  protected int overrun(int itemSize, int nItems) throws Exception {
+    throw new Exception("MemInStream overrun: end of stream");
+  }
+}

java/com/tightvnc/vncviewer/OptionsFrame.java

@@ -0,0 +1,449 @@
+//
+//  Copyright (C) 2001 HorizonLive.com, Inc.  All Rights Reserved.
+//  Copyright (C) 2001 Constantin Kaplinsky.  All Rights Reserved.
+//  Copyright (C) 2000 Tridia Corporation.  All Rights Reserved.
+//  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// Options frame.
+//
+// This deals with all the options the user can play with.
+// It sets the encodings array and some booleans.
+//
+
+import java.awt.*;
+import java.awt.event.*;
+
+class OptionsFrame extends Frame
+  implements WindowListener, ActionListener, ItemListener {
+
+  static String[] names = {
+    "Encoding",
+    "Compression level",
+    "JPEG image quality",
+    "Cursor shape updates",
+    "Use CopyRect",
+    "Continuous updates",
+    "Restricted colors",
+    "Mouse buttons 2 and 3",
+    "View only",
+    "Scale remote cursor",
+    "Share desktop",
+  };
+
+  static String[][] values = {
+    { "Auto", "Raw", "RRE", "CoRRE", "Hextile", "Zlib", "Tight", "ZRLE" },
+    { "Default", "1", "2", "3", "4", "5", "6", "7", "8", "9" },
+    { "JPEG off", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" },
+    { "Enable", "Ignore", "Disable" },
+    { "Yes", "No" },
+    { "Yes", "No" },
+    { "Yes", "No" },
+    { "Normal", "Reversed" },
+    { "Yes", "No" },
+    { "No", "50%", "75%", "125%", "150%" },
+    { "Yes", "No" },
+  };
+
+  final int
+    encodingIndex        = 0,
+    compressLevelIndex   = 1,
+    jpegQualityIndex     = 2,
+    cursorUpdatesIndex   = 3,
+    useCopyRectIndex     = 4,
+    contUpdatesIndex     = 5,
+    eightBitColorsIndex  = 6,
+    mouseButtonIndex     = 7,
+    viewOnlyIndex        = 8,
+    scaleCursorIndex     = 9,
+    shareDesktopIndex    = 10;
+
+  Label[] labels = new Label[names.length];
+  Choice[] choices = new Choice[names.length];
+  Button closeButton;
+  VncViewer viewer;
+
+
+  //
+  // The actual data which other classes look at:
+  //
+
+  int preferredEncoding;
+  int compressLevel;
+  int jpegQuality;
+  boolean useCopyRect;
+  boolean continuousUpdates;
+  boolean requestCursorUpdates;
+  boolean ignoreCursorUpdates;
+
+  boolean eightBitColors;
+
+  boolean reverseMouseButtons2And3;
+  boolean shareDesktop;
+  boolean viewOnly;
+  int scaleCursor;
+
+  boolean autoScale;
+  int scalingFactor;
+
+  //
+  // Constructor.  Set up the labels and choices from the names and values
+  // arrays.
+  //
+
+  OptionsFrame(VncViewer v) {
+    super("TightVNC Options");
+
+    viewer = v;
+
+    GridBagLayout gridbag = new GridBagLayout();
+    setLayout(gridbag);
+
+    GridBagConstraints gbc = new GridBagConstraints();
+    gbc.fill = GridBagConstraints.BOTH;
+
+    for (int i = 0; i < names.length; i++) {
+      labels[i] = new Label(names[i]);
+      gbc.gridwidth = 1;
+      gridbag.setConstraints(labels[i],gbc);
+      add(labels[i]);
+
+      choices[i] = new Choice();
+      gbc.gridwidth = GridBagConstraints.REMAINDER;
+      gridbag.setConstraints(choices[i],gbc);
+      add(choices[i]);
+      choices[i].addItemListener(this);
+
+      for (int j = 0; j < values[i].length; j++) {
+	choices[i].addItem(values[i][j]);
+      }
+    }
+
+    closeButton = new Button("Close");
+    gbc.gridwidth = GridBagConstraints.REMAINDER;
+    gridbag.setConstraints(closeButton, gbc);
+    add(closeButton);
+    closeButton.addActionListener(this);
+
+    pack();
+
+    addWindowListener(this);
+
+    // Set up defaults
+
+    choices[encodingIndex].select("Auto");
+    choices[compressLevelIndex].select("Default");
+    choices[jpegQualityIndex].select("6");
+    choices[cursorUpdatesIndex].select("Enable");
+    choices[useCopyRectIndex].select("Yes");
+    choices[contUpdatesIndex].select("No");
+    choices[eightBitColorsIndex].select("No");
+    choices[mouseButtonIndex].select("Normal");
+    choices[viewOnlyIndex].select("No");
+    choices[scaleCursorIndex].select("No");
+    choices[shareDesktopIndex].select("Yes");
+
+    // But let them be overridden by parameters
+
+    for (int i = 0; i < names.length; i++) {
+      String s = viewer.readParameter(names[i], false);
+      if (s != null) {
+	for (int j = 0; j < values[i].length; j++) {
+	  if (s.equalsIgnoreCase(values[i][j])) {
+	    choices[i].select(j);
+	  }
+	}
+      }
+    }
+
+    // FIXME: Provide some sort of GUI for "Scaling Factor".
+
+    autoScale = false;
+    scalingFactor = 100;
+    String s = viewer.readParameter("Scaling Factor", false);
+    if (s != null) {
+      if (s.equalsIgnoreCase("Auto")) {
+	autoScale = true;
+      } else {
+	// Remove the '%' char at the end of string if present.
+	if (s.charAt(s.length() - 1) == '%') {
+	  s = s.substring(0, s.length() - 1);
+	}
+	// Convert to an integer.
+	try {
+	  scalingFactor = Integer.parseInt(s);
+	}
+	catch (NumberFormatException e) {
+	  scalingFactor = 100;
+	}
+	// Make sure scalingFactor is in the range of [1..1000].
+	if (scalingFactor < 1) {
+	  scalingFactor = 1;
+	} else if (scalingFactor > 1000) {
+	  scalingFactor = 1000;
+	}
+      }
+    }
+
+    // Make the booleans and encodings array correspond to the state of the GUI
+
+    setEncodings();
+    setColorFormat();
+    setContinuousUpdates();
+    setOtherOptions();
+  }
+
+
+  //
+  // Disable the shareDesktop option
+  //
+
+  void disableShareDesktop() {
+    labels[shareDesktopIndex].setEnabled(false);
+    choices[shareDesktopIndex].setEnabled(false);
+  }
+
+
+  //
+  // Disable the "Continuous updates" option. This method is called
+  // when we figure out that the server does not support corresponding
+  // protocol extensions.
+  //
+
+  void disableContUpdates() {
+    labels[contUpdatesIndex].setEnabled(false);
+    choices[contUpdatesIndex].setEnabled(false);
+    choices[contUpdatesIndex].select("No");
+    continuousUpdates = false;
+  }
+
+
+  //
+  // setEncodings looks at the encoding, compression level, JPEG
+  // quality level, cursor shape updates and copyRect choices and sets
+  // corresponding variables properly. Then it calls the VncViewer's
+  // setEncodings method to send a SetEncodings message to the RFB
+  // server.
+  //
+
+  void setEncodings() {
+    useCopyRect = choices[useCopyRectIndex].getSelectedItem().equals("Yes");
+
+    preferredEncoding = RfbProto.EncodingRaw;
+    boolean enableCompressLevel = false;
+    boolean enableQualityLevel = false;
+
+    if (choices[encodingIndex].getSelectedItem().equals("RRE")) {
+      preferredEncoding = RfbProto.EncodingRRE;
+    } else if (choices[encodingIndex].getSelectedItem().equals("CoRRE")) {
+      preferredEncoding = RfbProto.EncodingCoRRE;
+    } else if (choices[encodingIndex].getSelectedItem().equals("Hextile")) {
+      preferredEncoding = RfbProto.EncodingHextile;
+    } else if (choices[encodingIndex].getSelectedItem().equals("ZRLE")) {
+      preferredEncoding = RfbProto.EncodingZRLE;
+    } else if (choices[encodingIndex].getSelectedItem().equals("Zlib")) {
+      preferredEncoding = RfbProto.EncodingZlib;
+      enableCompressLevel = true;
+    } else if (choices[encodingIndex].getSelectedItem().equals("Tight")) {
+      preferredEncoding = RfbProto.EncodingTight;
+      enableCompressLevel = true;
+      enableQualityLevel = !eightBitColors;
+    } else if (choices[encodingIndex].getSelectedItem().equals("Auto")) {
+      preferredEncoding = -1;
+      enableQualityLevel = !eightBitColors;
+    }
+
+    // Handle compression level setting.
+
+    try {
+      compressLevel =
+        Integer.parseInt(choices[compressLevelIndex].getSelectedItem());
+    }
+    catch (NumberFormatException e) {
+      compressLevel = -1;
+    }
+    if (compressLevel < 1 || compressLevel > 9) {
+      compressLevel = -1;
+    }
+    labels[compressLevelIndex].setEnabled(enableCompressLevel);
+    choices[compressLevelIndex].setEnabled(enableCompressLevel);
+
+    // Handle JPEG quality setting.
+
+    try {
+      jpegQuality =
+        Integer.parseInt(choices[jpegQualityIndex].getSelectedItem());
+    }
+    catch (NumberFormatException e) {
+      jpegQuality = -1;
+    }
+    if (jpegQuality < 0 || jpegQuality > 9) {
+      jpegQuality = -1;
+    }
+    labels[jpegQualityIndex].setEnabled(enableQualityLevel);
+    choices[jpegQualityIndex].setEnabled(enableQualityLevel);
+
+    // Request cursor shape updates if necessary.
+
+    requestCursorUpdates =
+      !choices[cursorUpdatesIndex].getSelectedItem().equals("Disable");
+
+    if (requestCursorUpdates) {
+      ignoreCursorUpdates =
+	choices[cursorUpdatesIndex].getSelectedItem().equals("Ignore");
+    }
+
+    viewer.setEncodings();
+  }
+
+  //
+  // setColorFormat sets eightBitColors variable depending on the GUI
+  // setting, causing switches between 8-bit and 24-bit colors mode if
+  // necessary.
+  //
+
+  void setColorFormat() {
+
+    eightBitColors =
+      choices[eightBitColorsIndex].getSelectedItem().equals("Yes");
+
+    boolean enableJPEG = !eightBitColors &&
+      (choices[encodingIndex].getSelectedItem().equals("Tight") ||
+       choices[encodingIndex].getSelectedItem().equals("Auto"));
+
+    labels[jpegQualityIndex].setEnabled(enableJPEG);
+    choices[jpegQualityIndex].setEnabled(enableJPEG);
+  }
+
+  //
+  // setContinuousUpdates sets continuousUpdates variable depending on
+  // the GUI setting. VncViewer monitors the state of this variable and
+  // send corresponding protocol messages to the server when necessary.
+  //
+
+  void setContinuousUpdates() {
+
+    continuousUpdates =
+      choices[contUpdatesIndex].getSelectedItem().equals("Yes");
+  }
+
+  //
+  // setOtherOptions looks at the "other" choices (ones that do not
+  // cause sending any protocol messages) and sets the boolean flags
+  // appropriately.
+  //
+
+  void setOtherOptions() {
+
+    reverseMouseButtons2And3
+      = choices[mouseButtonIndex].getSelectedItem().equals("Reversed");
+
+    viewOnly 
+      = choices[viewOnlyIndex].getSelectedItem().equals("Yes");
+    if (viewer.vc != null)
+      viewer.vc.enableInput(!viewOnly);
+
+    shareDesktop
+      = choices[shareDesktopIndex].getSelectedItem().equals("Yes");
+
+    String scaleString = choices[scaleCursorIndex].getSelectedItem();
+    if (scaleString.endsWith("%"))
+      scaleString = scaleString.substring(0, scaleString.length() - 1);
+    try {
+      scaleCursor = Integer.parseInt(scaleString);
+    }
+    catch (NumberFormatException e) {
+      scaleCursor = 0;
+    }
+    if (scaleCursor < 10 || scaleCursor > 500) {
+      scaleCursor = 0;
+    }
+    if (requestCursorUpdates && !ignoreCursorUpdates && !viewOnly) {
+      labels[scaleCursorIndex].setEnabled(true);
+      choices[scaleCursorIndex].setEnabled(true);
+    } else {
+      labels[scaleCursorIndex].setEnabled(false);
+      choices[scaleCursorIndex].setEnabled(false);
+    }
+    if (viewer.vc != null)
+      viewer.vc.createSoftCursor(); // update cursor scaling
+  }
+
+
+  //
+  // Respond to actions on Choice controls
+  //
+
+  public void itemStateChanged(ItemEvent evt) {
+    Object source = evt.getSource();
+
+    if (source == choices[encodingIndex] ||
+        source == choices[compressLevelIndex] ||
+        source == choices[jpegQualityIndex] ||
+        source == choices[cursorUpdatesIndex] ||
+        source == choices[useCopyRectIndex]) {
+
+      setEncodings();
+
+      if (source == choices[cursorUpdatesIndex]) {
+        setOtherOptions();      // update scaleCursor state
+      }
+
+    } else if (source == choices[eightBitColorsIndex]) {
+
+      setColorFormat();
+
+    } else if (source == choices[contUpdatesIndex]) {
+
+      setContinuousUpdates();
+
+    } else if (source == choices[mouseButtonIndex] ||
+	       source == choices[shareDesktopIndex] ||
+	       source == choices[viewOnlyIndex] ||
+	       source == choices[scaleCursorIndex]) {
+
+      setOtherOptions();
+
+    }
+  }
+
+  //
+  // Respond to button press
+  //
+
+  public void actionPerformed(ActionEvent evt) {
+    if (evt.getSource() == closeButton)
+      setVisible(false);
+  }
+
+  //
+  // Respond to window events
+  //
+
+  public void windowClosing(WindowEvent evt) {
+    setVisible(false);
+  }
+
+  public void windowActivated(WindowEvent evt) {}
+  public void windowDeactivated(WindowEvent evt) {}
+  public void windowOpened(WindowEvent evt) {}
+  public void windowClosed(WindowEvent evt) {}
+  public void windowIconified(WindowEvent evt) {}
+  public void windowDeiconified(WindowEvent evt) {}
+}

java/com/tightvnc/vncviewer/README

@@ -0,0 +1,522 @@
+
+  TightVNC Java Viewer version 1.3.9
+
+======================================================================
+
+This distribution is based on the standard VNC source and includes new
+TightVNC-specific features and fixes, such as additional low-bandwidth
+optimizations, major GUI improvements, and more.
+
+	Copyright (C) 1999 AT&T Laboratories Cambridge.
+	Copyright (C) 2000 Tridia Corp.
+	Copyright (C) 2002-2003 RealVNC Ltd.
+	Copyright (C) 2001-2004 HorizonLive.com, Inc.
+	Copyright (C) 2000-2007 Constantin Kaplinsky
+	Copyright (C) 2000-2007 TightVNC Group
+	All rights reserved.
+
+This software is distributed under the GNU General Public Licence as
+published by the Free Software Foundation. See the file LICENCE.TXT for the
+conditions under which this software is made available. TightVNC also
+contains code from other sources. See the Acknowledgements section below, and
+the individual files for details of the conditions under which they are made
+available.
+
+
+Compiling from the sources
+==========================
+
+To compile all the .java files to .class files, simply do:
+
+	% make all
+
+This will also generate a JAR (Java archive) file containing all the classes. 
+Most JVM (Java Virtual Machine) implementations are able to use either a set
+of .class files, or the JAR archive.
+
+
+Installation
+============
+
+There are three basic ways to use TightVNC Java viewer:
+
+  1. Running applet as part of TightVNC server installation.
+
+     Both the Unix and Windows versions of TightVNC servers include small
+     built-in HTTP server which can serve Java viewer to Web clients. This
+     enables easy Web access to the shared desktop without need to install
+     any software on the client computer. Unix and Windows versions of
+     TightVNC servers are different in the way they store the .class and .jar
+     files: the Unix server (Xvnc) is able to serve any set of files present
+     in a particular directory, while the Windows server (WinVNC) has all the
+     .class and .jar files inside the WinVNC executable file. Therefore, for
+     Xvnc, it's enough to copy the files into a correct directory, but for
+     WinVNC, the server binaries should be rebuild if the built-in Java
+     viewer should be updated.
+
+     To install the Java viewer under Xvnc, copy all the .class files, the
+     .jar file and the .vnc files to an installation directory (e.g.
+     /usr/local/vnc/classes):
+
+         cp *.class *.jar *.vnc /usr/local/vnc/classes
+
+     Also, make sure that the vncserver script is configured to point to the
+     installation directory (see the Xvnc manual page for the description of
+     the -httpd command-line option).
+
+  2. Running applet hosted on a standalone Web server.
+
+     Another possibility to use the Java viewer is to install it under a
+     fully-functional HTTP server such as Apache or IIS. Obviously, this
+     method requires running an HTTP server, and due to the Java security
+     restrictions, it's also required that the server should be installed on
+     the same machine which is running the TightVNC server. In this case,
+     installation is simply copying the .class and .jar files into a
+     directory that is under control of the HTTP server. Also, an HTML page
+     should be created which will act as a the base document for the viewer
+     applet (see an example named index.html in this distribution).
+
+     NOTE: Provided index.html page is an example only. Before using that
+     file, edit it with a text editor. See more information inside
+     index.html.
+
+  3. Running the viewer as a standalone application.
+
+     Finally, the Java viewer can be executed locally on the client machine,
+     but this method requires installation of either JRE (Java Runtime
+     Environment) or JDK (Java Development Kit). If all the .class files are
+     in the current directory, the Java viewer can be executed like this,
+     from the command line:
+
+         java VncViewer HOST vnchost PORT 5900
+
+     The HOST parameter is required, PORT defaults to 5900 if omitted, and
+     there is a number of other optional parameters, see the Parameters
+     section below.
+
+
+Parameters
+==========
+
+TightVNC Java viewer supports a number of parameters allowing you to
+customize its behavior. Most parameters directly correspond to the settings
+found in the Options window. However, there are parameters that do not
+correspond to those settings. For such parameters, you can see a note "no GUI
+equivalent", in the documentation below.
+
+Parameters can be specified in one of the two ways, depending on how the Java
+viewer is used:
+
+  1. When the Java viewer is run as an applet (embedded within an HTML
+     document), parameters should be specified in the <PARAM> HTML tags,
+     within the appropriate <APPLET> section. Here is an example:
+
+    <APPLET CODE=VncViewer.class ARCHIVE=VncViewer.jar WIDTH=400 HEIGHT=300>
+      <PARAM NAME="PORT" VALUE=5901>
+      <PARAM NAME="Scaling factor" VALUE=50>
+    </APPLET>
+
+  2. When run as a standalone application, the Java viewer reads parameters
+     from the command line. Command-line arguments should be specified in
+     pairs -- first goes parameter name, then parameter value. Here is a
+     command line example:
+
+     java VncViewer HOST vnchost PORT 5901 "Scaling factor" 50
+
+Both parameter names and their values are case-insensitive. The only
+exception is the "PASSWORD" parameter, as VNC passwords are case-sensitive.
+
+Here is the complete list of parameters supported in TightVNC Java viewer:
+
+--> "HOST" (no GUI equivalent)
+
+    Value: host name or IP address of the VNC server.
+    Default: in applet mode, the host from which the applet was loaded.
+
+    This parameter tells the viewer which server to connect to. It's not
+    needed in the applet mode, because default Java security policy allow
+    connections from applets to the only one host anyway, and that is the
+    host from which the applet was loaded. However, this parameter is
+    required if the viewer is used as a standalone application.
+
+--> "PORT" (no GUI equivalent)
+
+    Value: TCP port number on the VNC server.
+    Default: 5900.
+
+    This parameter specifies TCP port number for outgoing VNC connection.
+    Note that this port is not the one used for HTTP connection from the
+    browser, it is the port used for VNC/RFB connection. Usually, VNC servers
+    use ports 58xx for HTTP connections, and ports 59xx for RFB connections.
+    Thus, most likely, this parameter should be set to something like 5900,
+    5901 etc.
+
+--> "PASSWORD"
+
+    Value: session password in plain text.
+    Default: none, ask user.
+
+    DO NOT EVER USE THIS PARAMETER, unless you really know what you are
+    doing. It's extremely dangerous from the security point of view. When
+    this parameter is set, the viewer won't ever ask for a password.
+
+--> "ENCPASSWORD"
+
+    Value: encrypted session password in hex-ascii.
+    Default: none, ask user.
+
+    The same as the "PASSWORD" parameter but DES-encrypted using a fixed key.
+    Its value should be represented in hex-ascii e.g. "494015f9a35e8b22".
+    This parameter has higher priority over the "PASSWORD" parameter. DO NOT
+    EVER USE THIS PARAMETER, unless you really know what you are doing. It's
+    extremely dangerous from the security point of view, and encryption does
+    not actually help here since the decryption key is always known.
+
+--> "Encoding"
+
+    Values: "Auto", "Raw", "RRE", "CoRRE", "Hextile", "ZRLE", "Zlib", "Tight".
+    Default: "Auto".
+
+    The preferred encoding. If the value is "Auto", then the viewer will
+    continuously estimate average network throughput and request encodings
+    that are appropriate for current connection speed. "Hextile" is an
+    encoding that was designed for fast networks, while "Tight" is better
+    suited for low-bandwidth connections. From the other side, "Tight"
+    decoder in the TightVNC Java viewer seems to be more efficient than
+    "Hextile" decoder so it may be ok for fast networks too. "ZRLE" encoding
+    is similar to "Tight", but it does not support JPEG compression and
+    compression levels. Unlike "Tight" encoding, "ZRLE" is supported in
+    recent versions of RealVNC products. Other encodings are not efficient
+    and provided for compatibility reasons.
+
+--> "Compression level"
+
+    Values: "Default", "1", "2", "3", "4", "5", "6", "7", "8", "9".
+    Default: "Default". ;-)
+
+    Use specified compression level for "Tight" and "Zlib" encodings. Level 1
+    uses minimum of CPU time on the server but achieves weak compression
+    ratios. Level 9 offers best compression but may be slow in terms of CPU
+    time consumption on the server side. Use high levels with very slow
+    network connections, and low levels when working over higher-speed
+    networks. The "Default" value means that the server's default compression
+    level should be used.
+
+--> "JPEG image quality"
+
+    Values: "JPEG off", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9".
+    Default: "6".
+
+    Use the specified image quality level in "Tight" encoding. Quality level
+    0 denotes bad image quality but very impressive compression ratios, while
+    level 9 offers very good image quality at lower compression ratios. If
+    the value is "JPEG off", the server will not use lossy JPEG compression
+    in "Tight" encoding.
+
+--> "Cursor shape updates"
+
+    Values: "Enable", "Ignore", "Disable".
+    Default: "Enable".
+
+    Cursor shape updates is a protocol extension used to handle remote cursor
+    movements locally on the client side, saving bandwidth and eliminating
+    delays in mouse pointer movement. Note that current implementation of
+    cursor shape updates does not allow a client to track mouse cursor
+    position at the server side. This means that clients would not see mouse
+    cursor movements if mouse was moved either locally on the server, or by
+    another remote VNC client. Set this parameter to "Disable" if you always
+    want to see real cursor position on the remote side. Setting this option
+    to "Ignore" is similar to "Enable" but the remote cursor will not be
+    visible at all. This can be a reasonable setting if you don't care about
+    cursor shape and don't want to see two mouse cursors, one above another.
+
+--> "Use CopyRect"
+
+    Values: "Yes", "No".
+    Default: "Yes".
+
+    The "CopyRect" encoding saves bandwidth and drawing time when parts of
+    the remote screen are moving around. Most likely, you don't want to
+    change this setting.
+
+--> "Restricted colors"
+
+    Values: "Yes", "No".
+    Default: "No".
+
+    If set to "No", then 24-bit color format is used to represent pixel data. 
+    If set to "Yes", then only 8 bits are used to represent each pixel. 8-bit
+    color format can save bandwidth, but colors may look very inaccurate.
+
+--> "Mouse buttons 2 and 3"
+
+    Values: "Normal", "Reversed".
+    Default: "Normal".
+
+    If set to "Reversed", then right mouse button (button 2) will act as it
+    was middle mouse button (button 3), and vice versa.
+
+--> "View only"
+
+    Values: "Yes", "No".
+    Default: "No".
+
+    If set to "Yes", then all keyboard and mouse events in the desktop window
+    will be silently ignored and will not be passed to the remote side.
+
+--> "Scale remote cursor"
+
+    Values: "No", "50%", "75%", "125%", "150%".
+    Default: "No".
+
+    If a percentage value is specified, the remote cursor is reduced
+    or enlarged accordingly. Scaling takes place only when "View only"
+    is set to "No", and "Cursor shape updates" is set to "Enable".
+
+--> "Share desktop"
+
+    Values: "Yes", "No".
+    Default: "Yes".
+
+    Share the connection with other clients on the same VNC server. The exact
+    behaviour in each case depends on the server configuration.
+
+--> "Open new window" (no GUI equivalent, applicable only in the applet mode)
+
+    Values: "Yes", "No".
+    Default: "No".
+
+    Operate in a separate window. This makes possible resizing the desktop,
+    and adds scroll bars when necessary. If the server supports variable
+    desktop size, the window will resize automatically when remote desktop
+    size changes.
+
+--> "Scaling factor" (no GUI equivalent)
+
+    Value: an integer in the range of [1..1000], or the string "auto".
+    Default: "100".
+
+    Scale local representation of the remote desktop. The value is
+    interpreted as scaling factor in percents. The default value of 100%
+    corresponds to the original framebuffer size. Values below 100 reduce
+    image size, values above 100 enlarge the image proportionally. If the
+    parameter is set to "auto", automatic scaling is performed. Auto-scaling
+    tries to choose scaling factor such way that the whole remote framebuffer
+    will fit on the local screen. Currently, auto-scaling is supported only
+    when the remote desktop is shown in a separate frame (always true in the
+    application mode, and also in the applet mode with "Open new window"
+    parameter set to "yes").
+
+--> "Show controls" (no GUI equivalent)
+
+    Values: "Yes", "No".
+    Default: "Yes".
+
+    Set to "No" if you want to get rid of that button panel at the top.
+
+--> "Offer relogin" (no GUI equivalent, not applicable in the applet mode)
+
+    Values: "Yes", "No".
+    Default: "Yes".
+
+    If set to "No", the buttons "Login again" and "Close window" won't be
+    shown on disconnects or after an error has occured.
+
+--> "Show offline desktop" (no GUI equivalent)
+
+    Values: "Yes", "No".
+    Default: "No".
+
+    If set to "Yes", the viewer would continue to display desktop even
+    if the remote side has closed the connection. In this case, if the
+    button panel is enabled, then the "Disconnect" button would be
+    changed to "Hide desktop" after the connection is lost.
+
+--> "Defer screen updates" (no GUI equivalent)
+
+    Value: time in milliseconds.
+    Default: "20".
+
+    When updating the desktop contents after receiving an update from server,
+    schedule repaint within the specified number of milliseconds. Small delay
+    helps to coalesce several small updates into one drawing operation,
+    improving CPU usage. Set this parameter to 0 to disable deferred updates.
+
+--> "Defer cursor updates" (no GUI equivalent)
+
+    Value: time in milliseconds.
+    Default: "10".
+
+    When updating the desktop after moving the mouse, schedule repaint within
+    the specified number of milliseconds. This setting makes sense only when
+    "Cursor shape updates" parameter is set to "Enable". Small delay helps to
+    coalesce several small updates into one drawing operation, improving CPU
+    usage. Set this parameter to 0 to disable deferred cursor updates.
+
+--> "Defer update requests" (no GUI equivalent)
+
+    Value: time in milliseconds.
+    Default: "0".
+
+    After processing an update received from server, wait for the specified
+    number of milliseconds before requesting next screen update. Such delay
+    will end immediately on every mouse or keyboard event if not in the "view
+    only" mode. Small delay helps the server to coalesce several small
+    updates into one framebuffer update, improving both bandwidth and CPU
+    usage. Increasing the parameter value does not affect responsiveness on
+    mouse and keyboard events, but causes delays in updating the screen when
+    there is no mouse and keyboard activity on the client side.
+
+--> "SocketFactory" (no GUI equivalent)
+
+    Value: name of the class.
+    Default: none.
+
+    This option provides the way to define an alternate I/O implementation.
+    The dynamically referenced class must implement a SocketFactory
+    interface, and create a Socket, as configured by this parameter. See the
+    source in SocketFactory.java.
+
+--> "DEBUG_XU" (no GUI equivalent)
+
+    Value: non-negative integer.
+    Default: 0.
+
+    Debugging option that causes update statistics reset after the specified
+    number of first framebuffer updates. This option was added to measure the
+    performance of a VNC server. First few updates (especially the very first
+    one) may be notably slower than others, and the viewer can exclude such
+    updates from statistics.
+
+--> "DEBUG_CU" (no GUI equivalent)
+
+    Value: non-negative integer.
+    Default: 0.
+
+    Debugging option that causes the viewer disconnect after the specified
+    number of framebuffer updates. When used with the "DEBUG_XU" parameter,
+    the number of updates specified in "DEBUG_XU" is not counted as part of
+    this parameter's value. E.g. if "DEBUG_XU"=2 and "DEBUG_CU"=10, then the
+    viewer will disconnect after 12 framebuffer updates: update statistics
+    will be reset after first two updates, then collected for next 10
+    updates, then the viewer will disconnect automatically. If the value is
+    0, the viewer will not disconnect automatically. This option was added to
+    measure the performance of a VNC server.
+
+
+RECORDING VNC SESSIONS
+======================
+
+Current version of the TightVNC Java viewer is able to record VNC (RFB)
+sessions in files for later playback. The data format in saved session files
+is compatible with the rfbproxy program written by Tim Waugh. Most important
+thing about session recording is that it's supported only if Java security
+manager allows access to local filesystem. Typically, it would not work for
+unsigned applets. To use this feature, either use TightVNC Java viewer as a
+standalone application (Java Runtime Environment or Java Development Kit
+should be installed), or as a signed applet. The code checks if it's possible
+to support session recording, and if everything's fine, the new "Record"
+button should appear in the button panel. Pressing this button opens new
+window which controls session recording. The GUI is pretty self-explained.
+
+Other important facts about session recording:
+
+--> All sessions are recorded in the 24-bit color format. If you use
+    restricted colors (8-bit format), it will be temporarly switched to
+    24-bit mode during session recording.
+
+--> All sessions are recorded with cursor shape updates turned off. This is
+    necessary to represent remote cursor movements in recorded sessions.
+
+--> Closing and re-opening the recording control window does not affect the
+    recording. It's not necessary to keep that window open during recording a
+    session.
+
+--> Avoid using Zlib and ZRLE encodings when recording sessions. If you have
+    started recording BEFORE opening a VNC session, then you are ok. But
+    otherwise, all Zlib-encoded updates will be saved Raw-encoded (that is,
+    without compression at all). The case with ZRLE is even worse -- ZRLE
+    updates will not be saved at all, so the resulting session file may be
+    corrupted. Zlib decoding depends on the pixel data received earlier, thus
+    saving the data received from the server at an arbitrary moment is not
+    sufficient to decompress it correctly. And there is no way to tell Zlib
+    or ZRLE decoder to reset decompressor's state -- that's a limitation of
+    these encoders. The viewer could re-compress raw pixel data again before
+    saving Zlib-encoded sessions, but unfortunately Java API does not allow
+    to flush zlib data streams making it impossible to save Zlib-encoded RFB
+    pixel data without using native code.
+
+--> Usually, Tight encoding is the most suitable one for session recording,
+    but some of the issues described above for the Zlib encoding affect the
+    Tight encoding as well. Unlike Zlib sessions, Tight-encoded sessions are
+    always saved Tight-encoded, but the viewer has to re-compress parts of
+    data to synchronize encoder's and decoder's zlib streams. And, due to
+    Java zlib API limitations, zlib streams' states have to be reset on each
+    compressed rectangle, causing compression ratios to be lower than in the
+    original VNC session. If you want to achieve the best possible
+    performance, turn recording on BEFORE connecting to the VNC server,
+    otherwise CPU usage and compression ratios may be notably less efficient.
+
+
+HINTS
+=====
+
+--> To refresh remote desktop in the view-only mode, press "r" or "R"
+    on the keyboard.
+
+
+ACKNOWLEDGEMENTS
+================
+
+This distribution contains Java DES software by Dave Zimmerman
+<dzimm@widget.com> and Jef Poskanzer <jef@acme.com>.  This is:
+
+    Copyright (c) 1996 Widget Workshop, Inc. All Rights Reserved.
+
+    Permission to use, copy, modify, and distribute this software and its
+    documentation for NON-COMMERCIAL or COMMERCIAL purposes and without fee
+    is hereby granted, provided that this copyright notice is kept intact.
+    
+    WIDGET WORKSHOP MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE
+    SUITABILITY OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT
+    NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+    PARTICULAR PURPOSE, OR NON-INFRINGEMENT. WIDGET WORKSHOP SHALL NOT BE
+    LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING,
+    MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
+    
+    THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
+    CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
+    PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
+    NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
+    SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
+    SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
+    PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").  WIDGET
+    WORKSHOP SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF
+    FITNESS FOR HIGH RISK ACTIVITIES.
+
+    Copyright (C) 1996 by Jef Poskanzer <jef@acme.com>.  All rights
+    reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
+    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+    OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+    ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    Visit the ACME Labs Java page for up-to-date versions of this and other
+    fine Java utilities: http://www.acme.com/java/

java/com/tightvnc/vncviewer/RecordingFrame.java

@@ -0,0 +1,311 @@
+//
+//  Copyright (C) 2002 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// Recording frame. It allows to control recording RFB sessions into
+// FBS (FrameBuffer Stream) files.
+//
+
+import java.io.*;
+import java.awt.*;
+import java.awt.event.*;
+
+class RecordingFrame extends Frame
+  implements WindowListener, ActionListener {
+
+  boolean recording;
+
+  TextField fnameField;
+  Button browseButton;
+
+  Label statusLabel;
+
+  Button recordButton, nextButton, closeButton;
+  VncViewer viewer;
+
+  //
+  // Check if current security manager allows to create a
+  // RecordingFrame object.
+  //
+
+  public static boolean checkSecurity() {
+    SecurityManager security = System.getSecurityManager();
+    if (security != null) {
+      try {
+	security.checkPropertyAccess("user.dir");
+	security.checkPropertyAccess("file.separator");
+	// Work around (rare) checkPropertyAccess bug
+	System.getProperty("user.dir");
+      } catch (SecurityException e) {
+	System.out.println("SecurityManager restricts session recording.");
+	return false;
+      }
+    }
+    return true;
+  }
+
+  //
+  // Constructor.
+  //
+
+  RecordingFrame(VncViewer v) {
+    super("TightVNC Session Recording");
+
+    viewer = v;
+
+    // Determine initial filename for next saved session.
+    // FIXME: Check SecurityManager.
+
+    String fname = nextNewFilename(System.getProperty("user.dir") +
+				   System.getProperty("file.separator") +
+				   "vncsession.fbs");
+
+    // Construct new panel with file name field and "Browse" button.
+
+    Panel fnamePanel = new Panel();
+    GridBagLayout fnameGridbag = new GridBagLayout();
+    fnamePanel.setLayout(fnameGridbag);
+
+    GridBagConstraints fnameConstraints = new GridBagConstraints();
+    fnameConstraints.gridwidth = GridBagConstraints.RELATIVE;
+    fnameConstraints.fill = GridBagConstraints.BOTH;
+    fnameConstraints.weightx = 4.0;
+
+    fnameField = new TextField(fname, 64);
+    fnameGridbag.setConstraints(fnameField, fnameConstraints);
+    fnamePanel.add(fnameField);
+    fnameField.addActionListener(this);
+
+    fnameConstraints.gridwidth = GridBagConstraints.REMAINDER;
+    fnameConstraints.weightx = 1.0;
+
+    browseButton = new Button("Browse");
+    fnameGridbag.setConstraints(browseButton, fnameConstraints);
+    fnamePanel.add(browseButton);
+    browseButton.addActionListener(this);
+
+    // Construct the frame.
+
+    GridBagLayout gridbag = new GridBagLayout();
+    setLayout(gridbag);
+
+    GridBagConstraints gbc = new GridBagConstraints();
+    gbc.gridwidth = GridBagConstraints.REMAINDER;
+    gbc.fill = GridBagConstraints.BOTH;
+    gbc.weighty = 1.0;
+    gbc.insets = new Insets(10, 0, 0, 0);
+
+    Label helpLabel =
+      new Label("File name to save next recorded session in:", Label.CENTER);
+    gridbag.setConstraints(helpLabel, gbc);
+    add(helpLabel);
+
+    gbc.fill = GridBagConstraints.HORIZONTAL;
+    gbc.weighty = 0.0;
+    gbc.insets = new Insets(0, 0, 0, 0);
+
+    gridbag.setConstraints(fnamePanel, gbc);
+    add(fnamePanel);
+
+    gbc.fill = GridBagConstraints.BOTH;
+    gbc.weighty = 1.0;
+    gbc.insets = new Insets(10, 0, 10, 0);
+
+    statusLabel = new Label("", Label.CENTER);
+    gridbag.setConstraints(statusLabel, gbc);
+    add(statusLabel);
+
+    gbc.fill = GridBagConstraints.HORIZONTAL;
+    gbc.weightx = 1.0;
+    gbc.weighty = 0.0;
+    gbc.gridwidth = 1;
+    gbc.insets = new Insets(0, 0, 0, 0);
+
+    recordButton = new Button("Record");
+    gridbag.setConstraints(recordButton, gbc);
+    add(recordButton);
+    recordButton.addActionListener(this);
+
+    nextButton = new Button("Next file");
+    gridbag.setConstraints(nextButton, gbc);
+    add(nextButton);
+    nextButton.addActionListener(this);
+
+    closeButton = new Button("Close");
+    gridbag.setConstraints(closeButton, gbc);
+    add(closeButton);
+    closeButton.addActionListener(this);
+
+    // Set correct text, font and color for the statusLabel.
+    stopRecording();
+
+    pack();
+
+    addWindowListener(this);
+  }
+
+  //
+  // If the given string ends with ".NNN" where NNN is a decimal
+  // number, increase this number by one. Otherwise, append ".001"
+  // to the given string.
+  //
+
+  protected String nextFilename(String fname) {
+    int len = fname.length();
+    int suffixPos = len;
+    int suffixNum = 1;
+
+    if (len > 4 && fname.charAt(len - 4) == '.') {
+      try {
+	suffixNum = Integer.parseInt(fname.substring(len - 3, len)) + 1;
+	suffixPos = len - 4;
+      } catch (NumberFormatException e) { }
+    }
+
+    char[] zeroes = {'0', '0', '0'};
+    String suffix = String.valueOf(suffixNum);
+    if (suffix.length() < 3) {
+      suffix = new String(zeroes, 0, 3 - suffix.length()) + suffix;
+    }
+
+    return fname.substring(0, suffixPos) + '.' + suffix;
+  }
+
+  //
+  // Find next name of a file which does not exist yet.
+  //
+
+  protected String nextNewFilename(String fname) {
+    String newName = fname;
+    File f;
+    try {
+      do {
+	newName = nextFilename(newName);
+	f = new File(newName);
+      } while (f.exists());
+    } catch (SecurityException e) { }
+
+    return newName;
+  }
+
+  //
+  // Let the user choose a file name showing a FileDialog.
+  //
+
+  protected boolean browseFile() {
+    File currentFile = new File(fnameField.getText());
+
+    FileDialog fd =
+      new FileDialog(this, "Save next session as...", FileDialog.SAVE);
+    fd.setDirectory(currentFile.getParent());
+    fd.setVisible(true);
+    if (fd.getFile() != null) {
+      String newDir = fd.getDirectory();
+      String sep = System.getProperty("file.separator");
+      if (newDir.length() > 0) {
+	if (!sep.equals(newDir.substring(newDir.length() - sep.length())))
+	  newDir += sep;
+      }
+      String newFname = newDir + fd.getFile();
+      if (newFname.equals(fnameField.getText())) {
+	fnameField.setText(newFname);
+	return true;
+      }
+    }
+    return false;
+  }
+
+  //
+  // Start recording.
+  //
+
+  public void startRecording() {
+    statusLabel.setText("Status: Recording...");
+    statusLabel.setFont(new Font("Helvetica", Font.BOLD, 12));
+    statusLabel.setForeground(Color.red);
+    recordButton.setLabel("Stop recording");
+
+    recording = true;
+
+    viewer.setRecordingStatus(fnameField.getText());
+  }
+
+  //
+  // Stop recording.
+  //
+
+  public void stopRecording() {
+    statusLabel.setText("Status: Not recording.");
+    statusLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));
+    statusLabel.setForeground(Color.black);
+    recordButton.setLabel("Record");
+
+    recording = false;
+
+    viewer.setRecordingStatus(null);
+  }
+
+  //
+  // Close our window properly.
+  //
+
+  public void windowClosing(WindowEvent evt) {
+    setVisible(false);
+  }
+
+  //
+  // Ignore window events we're not interested in.
+  //
+
+  public void windowActivated(WindowEvent evt) {}
+  public void windowDeactivated (WindowEvent evt) {}
+  public void windowOpened(WindowEvent evt) {}
+  public void windowClosed(WindowEvent evt) {}
+  public void windowIconified(WindowEvent evt) {}
+  public void windowDeiconified(WindowEvent evt) {}
+
+
+  //
+  // Respond to button presses
+  //
+
+  public void actionPerformed(ActionEvent evt) {
+    if (evt.getSource() == browseButton) {
+      if (browseFile() && recording)
+	startRecording();
+
+    } else if (evt.getSource() == recordButton) {
+      if (!recording) {
+	startRecording();
+      } else {
+	stopRecording();
+        fnameField.setText(nextNewFilename(fnameField.getText()));
+      }
+
+    } else if (evt.getSource() == nextButton) {
+      fnameField.setText(nextNewFilename(fnameField.getText()));
+      if (recording)
+	startRecording();
+
+    } else if (evt.getSource() == closeButton) {
+      setVisible(false);
+
+    }
+  }
+}

java/com/tightvnc/vncviewer/ReloginPanel.java

@@ -0,0 +1,65 @@
+//
+//  Copyright (C) 2002 Cendio Systems.  All Rights Reserved.
+//  Copyright (C) 2002 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// ReloginPanel class implements panel with a button for logging in again,
+// after fatal errors or disconnect
+//
+
+
+import java.awt.*;
+import java.awt.event.*;
+import java.applet.*;
+
+//
+// The panel which implements the Relogin button
+//
+
+class ReloginPanel extends Panel implements ActionListener {
+  Button reloginButton;
+  Button closeButton;
+  VncViewer viewer;
+
+  //
+  // Constructor.
+  //
+  public ReloginPanel(VncViewer v) {
+    viewer = v;
+    setLayout(new FlowLayout(FlowLayout.CENTER));
+    reloginButton = new Button("Login again");
+    add(reloginButton);
+    reloginButton.addActionListener(this);
+    if (viewer.inSeparateFrame) {
+      closeButton = new Button("Close window");
+      add(closeButton);
+      closeButton.addActionListener(this);
+    }
+  }
+
+  //
+  // This method is called when a button is pressed.
+  //
+  public synchronized void actionPerformed(ActionEvent evt) {
+    if (viewer.inSeparateFrame)
+      viewer.vncFrame.dispose();
+    if (evt.getSource() == reloginButton)
+      viewer.getAppletContext().showDocument(viewer.getDocumentBase());
+  }
+}

java/com/tightvnc/vncviewer/SessionRecorder.java

@@ -0,0 +1,193 @@
+//
+//  Copyright (C) 2002 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// SessionRecorder is a class to write FBS (FrameBuffer Stream) files.
+// FBS files are used to save RFB sessions for later playback.
+//
+
+import java.io.*;
+
+class SessionRecorder {
+
+  protected FileOutputStream f;
+  protected DataOutputStream df;
+  protected long startTime, lastTimeOffset;
+
+  protected byte[] buffer;
+  protected int bufferSize;
+  protected int bufferBytes;
+
+  public SessionRecorder(String name, int bufsize) throws IOException {
+    f = new FileOutputStream(name);
+    df = new DataOutputStream(f);
+    startTime = System.currentTimeMillis();
+    lastTimeOffset = 0;
+    
+    bufferSize = bufsize;
+    bufferBytes = 0;
+    buffer = new byte[bufferSize];
+  }
+
+  public SessionRecorder(String name) throws IOException {
+    this(name, 65536);
+  }
+
+  //
+  // Close the file, free resources.
+  //
+
+  public void close() throws IOException {
+    try {
+      flush();
+    } catch (IOException e) {
+    }
+
+    df = null;
+    f.close();
+    f = null;
+    buffer = null;
+  }
+
+  //
+  // Write the FBS file header as defined in the rfbproxy utility.
+  //
+
+  public void writeHeader() throws IOException {
+    df.write("FBS 001.000\n".getBytes());
+  }
+
+  //
+  // Write one byte.
+  //
+
+  public void writeByte(int b) throws IOException {
+    prepareWriting();
+    buffer[bufferBytes++] = (byte)b;
+  }
+
+  //
+  // Write 16-bit value, big-endian.
+  //
+
+  public void writeShortBE(int v) throws IOException {
+    prepareWriting();
+    buffer[bufferBytes++] = (byte)(v >> 8);
+    buffer[bufferBytes++] = (byte)v;
+  }
+
+  //
+  // Write 32-bit value, big-endian.
+  //
+
+  public void writeIntBE(int v) throws IOException {
+    prepareWriting();
+    buffer[bufferBytes]     = (byte)(v >> 24);
+    buffer[bufferBytes + 1] = (byte)(v >> 16);
+    buffer[bufferBytes + 2] = (byte)(v >> 8);
+    buffer[bufferBytes + 3] = (byte)v;
+    bufferBytes += 4;
+  }
+
+  //
+  // Write 16-bit value, little-endian.
+  //
+
+  public void writeShortLE(int v) throws IOException {
+    prepareWriting();
+    buffer[bufferBytes++] = (byte)v;
+    buffer[bufferBytes++] = (byte)(v >> 8);
+  }
+
+  //
+  // Write 32-bit value, little-endian.
+  //
+
+  public void writeIntLE(int v) throws IOException {
+    prepareWriting();
+    buffer[bufferBytes]     = (byte)v;
+    buffer[bufferBytes + 1] = (byte)(v >> 8);
+    buffer[bufferBytes + 2] = (byte)(v >> 16);
+    buffer[bufferBytes + 3] = (byte)(v >> 24);
+    bufferBytes += 4;
+  }
+
+  //
+  // Write byte arrays.
+  //
+
+  public void write(byte b[], int off, int len) throws IOException {
+    prepareWriting();
+    while (len > 0) {
+      if (bufferBytes > bufferSize - 4)
+	flush(false);
+
+      int partLen;
+      if (bufferBytes + len > bufferSize) {
+	partLen = bufferSize - bufferBytes;
+      } else {
+	partLen = len;
+      }
+      System.arraycopy(b, off, buffer, bufferBytes, partLen);
+      bufferBytes += partLen;
+      off += partLen;
+      len -= partLen;
+    }
+  }
+
+  public void write(byte b[]) throws IOException {
+    write(b, 0, b.length);
+  }
+
+  //
+  // Flush the output. This method saves buffered data in the
+  // underlying file object adding data sizes and timestamps. If the
+  // updateTimeOffset is set to false, then the current time offset
+  // will not be changed for next write operation.
+  //
+
+  public void flush(boolean updateTimeOffset) throws IOException {
+    if (bufferBytes > 0) {
+      df.writeInt(bufferBytes);
+      df.write(buffer, 0, (bufferBytes + 3) & 0x7FFFFFFC);
+      df.writeInt((int)lastTimeOffset);
+      bufferBytes = 0;
+      if (updateTimeOffset)
+	lastTimeOffset = -1;
+    }
+  }
+
+  public void flush() throws IOException {
+    flush(true);
+  }
+
+  //
+  // Before writing any data, remember time offset and flush the
+  // buffer before it becomes full.
+  //
+
+  protected void prepareWriting() throws IOException {
+    if (lastTimeOffset == -1)
+      lastTimeOffset = System.currentTimeMillis() - startTime;
+    if (bufferBytes > bufferSize - 4)
+      flush(false);
+  }
+
+}
+

java/com/tightvnc/vncviewer/SocketFactory.java

@@ -0,0 +1,36 @@
+//
+//  Copyright (C) 2002 HorizonLive.com, Inc.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+//
+// SocketFactory.java describes an interface used to substitute the
+// standard Socket class by its alternative implementations.
+//
+
+import java.applet.*;
+import java.net.*;
+import java.io.*;
+
+public interface SocketFactory {
+
+  public Socket createSocket(String host, int port, Applet applet)
+    throws IOException;
+
+  public Socket createSocket(String host, int port, String[] args)
+    throws IOException;
+}

java/com/tightvnc/vncviewer/VncCanvas2.java

@@ -0,0 +1,63 @@
+//
+//  Copyright (C) 2006 Constantin Kaplinsky.  All Rights Reserved.
+//
+//  This is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This software is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this software; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+//  USA.
+//
+
+import java.awt.*;
+import java.io.*;
+
+//
+// VncCanvas2 is a special version of VncCanvas which may use Java 2 API.
+//
+
+class VncCanvas2 extends VncCanvas {
+
+  public VncCanvas2(VncViewer v) throws IOException {
+    super(v);
+    disableFocusTraversalKeys();
+  }
+
+  public VncCanvas2(VncViewer v, int maxWidth_, int maxHeight_)
+    throws IOException {
+
+    super(v, maxWidth_, maxHeight_);
+    disableFocusTraversalKeys();
+  }
+
+  public void paintScaledFrameBuffer(Graphics g) {
+    Graphics2D g2d = (Graphics2D)g;
+    g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
+                         RenderingHints.VALUE_RENDER_QUALITY);
+    g2d.drawImage(memImage, 0, 0, scaledWidth, scaledHeight, null);
+  }
+
+  //
+  // Try to disable focus traversal keys (JVMs 1.4 and higher).
+  //
+
+  private void disableFocusTraversalKeys() {
+    try {
+      Class[] argClasses = { Boolean.TYPE };
+      java.lang.reflect.Method method =
+        getClass().getMethod("setFocusTraversalKeysEnabled", argClasses);
+      Object[] argObjects = { new Boolean(false) };
+      method.invoke(this, argObjects);
+    } catch (Exception e) {}
+  }
+
+}
+

java/com/tightvnc/vncviewer/ZlibInStream.java

@@ -0,0 +1,111 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+//
+// A ZlibInStream reads from a zlib.io.InputStream
+//
+
+public class ZlibInStream extends InStream {
+
+  static final int defaultBufSize = 16384;
+
+  public ZlibInStream(int bufSize_) {
+    bufSize = bufSize_;
+    b = new byte[bufSize];
+    ptr = end = ptrOffset = 0;
+    inflater = new java.util.zip.Inflater();
+  }
+
+  public ZlibInStream() { this(defaultBufSize); }
+
+  public void setUnderlying(InStream is, int bytesIn_) {
+    underlying = is;
+    bytesIn = bytesIn_;
+    ptr = end = 0;
+  }
+
+  public void reset() throws Exception {
+    ptr = end = 0;
+    if (underlying == null) return;
+
+    while (bytesIn > 0) {
+      decompress();
+      end = 0; // throw away any data
+    }
+    underlying = null;
+  }
+
+  public int pos() { return ptrOffset + ptr; }
+
+  protected int overrun(int itemSize, int nItems) throws Exception {
+    if (itemSize > bufSize)
+      throw new Exception("ZlibInStream overrun: max itemSize exceeded");
+    if (underlying == null)
+      throw new Exception("ZlibInStream overrun: no underlying stream");
+
+    if (end - ptr != 0)
+      System.arraycopy(b, ptr, b, 0, end - ptr);
+
+    ptrOffset += ptr;
+    end -= ptr;
+    ptr = 0;
+
+    while (end < itemSize) {
+      decompress();
+    }
+
+    if (itemSize * nItems > end)
+      nItems = end / itemSize;
+
+    return nItems;
+  }
+
+  // decompress() calls the decompressor once.  Note that this won't
+  // necessarily generate any output data - it may just consume some input
+  // data.  Returns false if wait is false and we would block on the underlying
+  // stream.
+
+  private void decompress() throws Exception {
+    try {
+      underlying.check(1);
+      int avail_in = underlying.getend() - underlying.getptr();
+      if (avail_in > bytesIn)
+        avail_in = bytesIn;
+
+      if (inflater.needsInput()) {
+        inflater.setInput(underlying.getbuf(), underlying.getptr(), avail_in);
+      }
+
+      int n = inflater.inflate(b, end, bufSize - end); 
+
+      end += n;
+      if (inflater.needsInput()) {
+        bytesIn -= avail_in;
+        underlying.setptr(underlying.getptr() + avail_in);
+      }
+    } catch (java.util.zip.DataFormatException e) {
+      throw new Exception("ZlibInStream: inflate failed");
+    }
+  }
+
+  private InStream underlying;
+  private int bufSize;
+  private int ptrOffset;
+  private java.util.zip.Inflater inflater;
+  private int bytesIn;
+}

java/com/tightvnc/vncviewer/index.html

@@ -0,0 +1,29 @@
+<!-- 
+     index.html - an example HTML page for TightVNC Java viewer applet, to be
+     used with a standalone Web server running on the same machine where the
+     TightVNC server is running. Before using this example, please MAKE SURE
+     to check the following:
+
+     * the value of the PORT parameter should be set correctly (normally, the
+       port number is 5900 + display number);
+
+     * the CODE and ARCHIVE attributes of the <APPLET> tag should point to
+       the correct directory (this example assumes that this page is in the
+       same directory with .jar and .class files);
+
+     * the WIDTH and HEIGHT attributes of the <APPLET> tag correspond to the
+       actual desktop size on the server (height should be increased to leave
+       enough space for the button panel).
+-->
+
+<HTML>
+<TITLE>
+TightVNC desktop
+</TITLE>
+<APPLET CODE="VncViewer.class" ARCHIVE="VncViewer.jar"
+        WIDTH="800" HEIGHT="632">
+<PARAM NAME="PORT" VALUE="5901">
+</APPLET>
+<BR>
+<A href="http://www.tightvnc.com/">TightVNC site</A>
+</HTML>

java/com/tightvnc/vncviewer/index.vnc

@@ -0,0 +1,25 @@
+<!-- 
+     index.vnc - default HTML page for TightVNC Java viewer applet, to be
+     used with Xvnc. On any file ending in .vnc, the HTTP server embedded in
+     Xvnc will substitute the following variables when preceded by a dollar:
+     USER, DESKTOP, DISPLAY, APPLETWIDTH, APPLETHEIGHT, WIDTH, HEIGHT, PORT,
+     PARAMS. Use two dollar signs ($$) to get a dollar sign in the generated
+     HTML page.
+
+     NOTE: the $PARAMS variable is not supported by the standard VNC, so
+     make sure you have TightVNC on the server side, if you're using this
+     variable.
+-->
+
+<HTML>
+<TITLE>
+$USER's $DESKTOP desktop ($DISPLAY)
+</TITLE>
+<APPLET CODE=VncViewer.class ARCHIVE=VncViewer.jar
+        WIDTH=$APPLETWIDTH HEIGHT=$APPLETHEIGHT>
+<param name=PORT value=$PORT>
+$PARAMS
+</APPLET>
+<BR>
+<A href="http://www.tightvnc.com/">TightVNC site</A>
+</HTML>