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verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
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if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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7 files changed, 1872 insertions, 0 deletions

diff --git a/libjava/classpath/gnu/javax/security/auth/callback/AWTCallbackHandler.java b/libjava/classpath/gnu/javax/security/auth/callback/AWTCallbackHandler.java
new file mode 100644
index 000000000..f241157ee
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/AWTCallbackHandler.java
@@ -0,0 +1,454 @@
+/* AWTCallbackHandler.java --
+   Copyright (C) 2004, 2006  Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.security.auth.callback;
+
+import gnu.java.lang.CPStringBuilder;
+
+import java.awt.BorderLayout;
+import java.awt.Button;
+import java.awt.Dialog;
+import java.awt.FlowLayout;
+import java.awt.Frame;
+import java.awt.GridLayout;
+import java.awt.Label;
+import java.awt.List;
+import java.awt.Panel;
+import java.awt.TextArea;
+import java.awt.TextField;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowEvent;
+import java.awt.event.WindowListener;
+
+import java.util.Locale;
+
+import javax.security.auth.callback.ChoiceCallback;
+import javax.security.auth.callback.ConfirmationCallback;
+import javax.security.auth.callback.LanguageCallback;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextInputCallback;
+import javax.security.auth.callback.TextOutputCallback;
+
+public class AWTCallbackHandler extends AbstractCallbackHandler
+  implements ActionListener, WindowListener
+{
+
+  // Fields.
+  // -------------------------------------------------------------------------
+
+  protected String actionCommand;
+
+  private static final String ACTION_CANCEL  = "CANCEL";
+  private static final String ACTION_NO      = "NO";
+  private static final String ACTION_NONE    = "NONE";
+  private static final String ACTION_OK      = "OK";
+  private static final String ACTION_YES     = "YES";
+
+  // Constructor.
+  // -------------------------------------------------------------------------
+
+  public AWTCallbackHandler()
+  {
+    super ("AWT");
+    actionCommand = ACTION_NONE;
+  }
+
+  // Instance methods.
+  // -------------------------------------------------------------------------
+
+  protected synchronized void handleChoice(ChoiceCallback c)
+  {
+    Frame ownerFrame = new Frame();
+    Dialog dialog = new Dialog(ownerFrame);
+    String[] choices = c.getChoices();
+    dialog.setTitle(c.getPrompt());
+    Label label = new Label(c.getPrompt());
+    List list = new List(Math.min(5, choices.length),
+                         c.allowMultipleSelections());
+    Panel buttons = new Panel();
+    Button ok = new Button(messages.getString("callback.ok"));
+    ok.setActionCommand(ACTION_OK);
+    ok.addActionListener(this);
+    Button cancel = new Button(messages.getString("callback.cancel"));
+    cancel.setActionCommand(ACTION_CANCEL);
+    cancel.addActionListener(this);
+    for (int i = 0; i < choices.length; i++)
+      {
+        list.add(choices[i]);
+      }
+    if (c.getDefaultChoice() >= 0 && c.getDefaultChoice() < choices.length)
+      {
+        list.select(c.getDefaultChoice());
+      }
+    dialog.setLayout(new BorderLayout());
+    dialog.add(label, BorderLayout.NORTH);
+    dialog.add(list, BorderLayout.CENTER);
+    buttons.setLayout(new FlowLayout(FlowLayout.RIGHT));
+    buttons.add(cancel);
+    buttons.add(ok);
+    dialog.add(buttons, BorderLayout.SOUTH);
+    dialog.pack();
+    dialog.show();
+    try { wait(); }
+    catch (InterruptedException ie) { }
+    if (actionCommand.equals(ACTION_OK))
+      {
+        if (c.allowMultipleSelections())
+          {
+            c.setSelectedIndexes(list.getSelectedIndexes());
+          }
+        else
+          {
+            c.setSelectedIndex(list.getSelectedIndex());
+          }
+      }
+    dialog.dispose();
+    ownerFrame.dispose();
+  }
+
+  protected synchronized void handleConfirmation(ConfirmationCallback c)
+  {
+    Frame ownerFrame = new Frame();
+    Dialog dialog = new Dialog(ownerFrame);
+    switch (c.getMessageType())
+      {
+      case ConfirmationCallback.ERROR:
+        dialog.setTitle(messages.getString("callback.error"));
+        break;
+      case ConfirmationCallback.INFORMATION:
+        dialog.setTitle(messages.getString("callback.information"));
+        break;
+      case ConfirmationCallback.WARNING:
+        dialog.setTitle(messages.getString("callback.warning"));
+        break;
+      default:
+        dialog.setTitle("");
+      }
+    dialog.setLayout(new GridLayout(2, 1));
+    dialog.add(new Label(c.getPrompt()));
+    Panel buttons = new Panel();
+    buttons.setLayout(new FlowLayout(FlowLayout.RIGHT));
+    dialog.add(buttons);
+    String[] choices = null;
+    int[] values = null;
+    switch (c.getOptionType())
+      {
+      case ConfirmationCallback.OK_CANCEL_OPTION:
+        choices = new String[] {
+          messages.getString("callback.cancel"),
+          messages.getString("callback.ok")
+        };
+        values = new int[] {
+          ConfirmationCallback.CANCEL, ConfirmationCallback.OK
+        };
+        break;
+      case ConfirmationCallback.YES_NO_CANCEL_OPTION:
+        choices = new String[] {
+          messages.getString("callback.cancel"),
+          messages.getString("callback.no"),
+          messages.getString("callback.yes")
+        };
+        values = new int[] {
+          ConfirmationCallback.CANCEL, ConfirmationCallback.NO,
+          ConfirmationCallback.YES
+        };
+        break;
+      case ConfirmationCallback.YES_NO_OPTION:
+        choices = new String[] {
+          messages.getString("callback.no"),
+          messages.getString("callback.yes")
+        };
+        values = new int[] {
+          ConfirmationCallback.NO, ConfirmationCallback.YES
+        };
+        break;
+      case ConfirmationCallback.UNSPECIFIED_OPTION:
+        choices = c.getOptions();
+        values = new int[choices.length];
+        for (int i = 0; i < values.length; i++)
+          values[i] = i;
+        break;
+      default:
+        throw new IllegalArgumentException();
+      }
+    for (int i = 0; i < choices.length; i++)
+      {
+        Button b = new Button(choices[i]);
+        b.setActionCommand(choices[i]);
+        b.addActionListener(this);
+        buttons.add(b);
+      }
+    dialog.pack();
+    dialog.show();
+    try { wait(); }
+    catch (InterruptedException ie) { }
+    for (int i = 0; i < choices.length; i++)
+      {
+        if (actionCommand.equals(choices[i]))
+          {
+            c.setSelectedIndex(values[i]);
+            break;
+          }
+      }
+    dialog.dispose();
+    ownerFrame.dispose();
+  }
+
+  protected synchronized void handleLanguage(LanguageCallback c)
+  {
+    Locale[] locales = Locale.getAvailableLocales();
+    String[] languages = new String[locales.length];
+    Locale def = Locale.getDefault();
+    int defind = 0;
+    for (int i = 0; i < locales.length; i++)
+      {
+        CPStringBuilder lang =
+          new CPStringBuilder(locales[i].getDisplayLanguage(locales[i]));
+        String country = locales[i].getDisplayCountry(locales[i]);
+        String variant = locales[i].getDisplayVariant(locales[i]);
+        if (country.length() > 0 && variant.length() > 0)
+          {
+            lang.append(" (");
+            lang.append(country);
+            lang.append(", ");
+            lang.append(variant);
+            lang.append(")");
+          }
+        else if (country.length() > 0)
+          {
+            lang.append(" (");
+            lang.append(country);
+            lang.append(")");
+          }
+        else if (variant.length() > 0)
+          {
+            lang.append(" (");
+            lang.append(variant);
+            lang.append(")");
+          }
+        languages[i] = lang.toString();
+        if (locales[i].equals(def))
+          defind = i;
+      }
+    ChoiceCallback c2 =
+      new ChoiceCallback(messages.getString("callback.language"), languages,
+                         defind, false);
+    handleChoice(c2);
+    c.setLocale(def);
+    if (c2.getSelectedIndexes() != null && c2.getSelectedIndexes().length > 0)
+      {
+        int index = c2.getSelectedIndexes()[0];
+        if (index >= 0 && index < locales.length)
+          c.setLocale(locales[index]);
+      }
+  }
+
+  protected synchronized void handleName(NameCallback c)
+  {
+    Frame ownerFrame = new Frame();
+    Dialog dialog = new Dialog(ownerFrame);
+    dialog.setTitle(c.getPrompt());
+    dialog.setLayout(new GridLayout(3, 1));
+    Label label = new Label(c.getPrompt());
+    TextField input = new TextField();
+    if (c.getDefaultName() != null)
+      {
+        input.setText(c.getDefaultName());
+      }
+    Panel buttons = new Panel();
+    Button ok = new Button(messages.getString("callback.ok"));
+    ok.setActionCommand(ACTION_OK);
+    ok.addActionListener(this);
+    Button cancel = new Button(messages.getString("callback.cancel"));
+    cancel.setActionCommand(ACTION_CANCEL);
+    cancel.addActionListener(this);
+    dialog.add(label);
+    dialog.add(input);
+    buttons.setLayout(new FlowLayout(FlowLayout.RIGHT));
+    buttons.add(ok);
+    buttons.add(cancel);
+    dialog.add(buttons);
+    dialog.pack();
+    dialog.show();
+    try { wait(); }
+    catch (InterruptedException ie) { }
+    if (actionCommand.equals(ACTION_OK))
+      {
+        c.setName(input.getText());
+      }
+    dialog.dispose();
+    ownerFrame.dispose();
+  }
+
+  protected synchronized void handlePassword(PasswordCallback c)
+  {
+    Frame ownerFrame = new Frame();
+    Dialog dialog = new Dialog(ownerFrame);
+    dialog.setTitle(c.getPrompt());
+    dialog.setLayout(new GridLayout(3, 1));
+    Label label = new Label(c.getPrompt());
+    TextField input = new TextField();
+    if (!c.isEchoOn())
+      {
+        input.setEchoChar('*');
+      }
+    Panel buttons = new Panel();
+    Button ok = new Button(messages.getString("callback.ok"));
+    ok.setActionCommand(ACTION_OK);
+    ok.addActionListener(this);
+    Button cancel = new Button(messages.getString("callback.cancel"));
+    cancel.setActionCommand(ACTION_CANCEL);
+    cancel.addActionListener(this);
+    dialog.add(label);
+    dialog.add(input);
+    buttons.setLayout(new FlowLayout(FlowLayout.RIGHT));
+    buttons.add(ok);
+    buttons.add(cancel);
+    dialog.add(buttons);
+    dialog.pack();
+    dialog.show();
+    try { wait(); }
+    catch (InterruptedException ie) { }
+    if (actionCommand.equals(ACTION_OK))
+      {
+        c.setPassword(input.getText().toCharArray());
+      }
+    dialog.dispose();
+    ownerFrame.dispose();
+  }
+
+  protected synchronized void handleTextInput(TextInputCallback c)
+  {
+    Frame ownerFrame = new Frame();
+    Dialog dialog = new Dialog(ownerFrame);
+    dialog.setTitle(c.getPrompt());
+    dialog.setLayout(new BorderLayout());
+    Label label = new Label(c.getPrompt());
+    TextArea text = new TextArea(10, 40);
+    if (c.getDefaultText() != null)
+      {
+        text.setText(c.getDefaultText());
+      }
+    Panel buttons = new Panel();
+    Button ok = new Button(messages.getString("callback.ok"));
+    ok.setActionCommand(ACTION_OK);
+    ok.addActionListener(this);
+    Button cancel = new Button(messages.getString("callback.cancel"));
+    cancel.setActionCommand(ACTION_CANCEL);
+    cancel.addActionListener(this);
+    dialog.add(label, BorderLayout.NORTH);
+    dialog.add(text, BorderLayout.CENTER);
+    buttons.setLayout(new FlowLayout(FlowLayout.RIGHT));
+    buttons.add(ok);
+    buttons.add(cancel);
+    dialog.add(buttons, BorderLayout.SOUTH);
+    dialog.pack();
+    dialog.show();
+    try { wait(); }
+    catch (InterruptedException ie) { }
+    if (actionCommand.equals(ACTION_OK))
+      {
+        c.setText(text.getText());
+      }
+    dialog.dispose();
+    ownerFrame.dispose();
+  }
+
+  protected synchronized void handleTextOutput(TextOutputCallback c)
+  {
+    Frame ownerFrame = new Frame();
+    Dialog dialog = new Dialog(ownerFrame);
+    dialog.setLayout(new GridLayout(2, 1));
+    switch (c.getMessageType() /*c.getStyle()*/)
+      {
+      case ConfirmationCallback.ERROR:
+        dialog.setTitle(messages.getString("callback.error"));
+        break;
+      case ConfirmationCallback.INFORMATION:
+        dialog.setTitle(messages.getString("callback.information"));
+        break;
+      case ConfirmationCallback.WARNING:
+        dialog.setTitle(messages.getString("callback.warning"));
+        break;
+      default:
+        dialog.setTitle("");
+      }
+    Label label = new Label(c.getMessage());
+    Panel buttons = new Panel();
+    Button ok = new Button(messages.getString("callback.ok"));
+    buttons.setLayout(new FlowLayout(FlowLayout.RIGHT));
+    buttons.add(ok);
+    ok.addActionListener(this);
+    dialog.add(label);
+    dialog.add(buttons);
+    dialog.pack();
+    dialog.show();
+    try { wait(); }
+    catch (InterruptedException ie) { }
+    dialog.dispose();
+    ownerFrame.dispose();
+  }
+
+  // ActionListener interface implementation.
+  // -------------------------------------------------------------------------
+
+  public synchronized void actionPerformed(ActionEvent ae)
+  {
+    actionCommand = ae.getActionCommand();
+    notifyAll();
+  }
+
+  // WindowListener interface implementation.
+  // -------------------------------------------------------------------------
+
+  public synchronized void windowClosing(WindowEvent we)
+  {
+    actionCommand = ACTION_NONE;
+    notifyAll();
+  }
+
+  public void windowOpened(WindowEvent we) { }
+  public void windowClosed(WindowEvent we) { }
+  public void windowIconified(WindowEvent we) { }
+  public void windowDeiconified(WindowEvent we) { }
+  public void windowActivated(WindowEvent we) { }
+  public void windowDeactivated(WindowEvent we) { }
+}
diff --git a/libjava/classpath/gnu/javax/security/auth/callback/AbstractCallbackHandler.java b/libjava/classpath/gnu/javax/security/auth/callback/AbstractCallbackHandler.java
new file mode 100644
index 000000000..31a7f5aca
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/AbstractCallbackHandler.java
@@ -0,0 +1,295 @@
+/* AbstractCallbackHandler.java --
+   Copyright (C) 2005, 2006  Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.security.auth.callback;
+
+import gnu.java.security.Engine;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.util.PropertyResourceBundle;
+import java.util.ResourceBundle;
+
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.Provider;
+import java.security.Security;
+
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.ChoiceCallback;
+import javax.security.auth.callback.ConfirmationCallback;
+import javax.security.auth.callback.LanguageCallback;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextInputCallback;
+import javax.security.auth.callback.TextOutputCallback;
+import javax.security.auth.callback.UnsupportedCallbackException;
+
+public abstract class AbstractCallbackHandler implements CallbackHandler
+{
+
+  // Fields.
+  // -------------------------------------------------------------------------
+
+  private static final String SERVICE = "CallbackHandler";
+
+  protected final ResourceBundle messages;
+
+  private final String name;
+
+  // Constructors.
+  // -------------------------------------------------------------------------
+
+  protected AbstractCallbackHandler (final String name)
+  {
+    super();
+    messages = PropertyResourceBundle.getBundle("gnu/javax/security/auth/callback/MessagesBundle");
+    this.name = name;
+  }
+
+  /**
+   * Create an instance of <code>CallbackHandler</code> of the designated
+   * <code>type</code> from the first Security Provider which offers it.
+   *
+   * @param type the type of callback handler to create.
+   * @return a newly created instance of <code>ClassbackHandler</code>.
+   * @throws NoSuchAlgorithmException if no security provider is found to offer
+   *           an implementation of <code>CallbackHandler</code> of the
+   *           designated <code>type</code>.
+   */
+  public static CallbackHandler getInstance(String type)
+      throws NoSuchAlgorithmException
+  {
+    Provider[] p = Security.getProviders();
+    NoSuchAlgorithmException lastException = null;
+    for (int i = 0; i < p.length; i++)
+      try
+        {
+          return getInstance(type, p[i]);
+        }
+      catch (NoSuchAlgorithmException x)
+        {
+          lastException = x;
+        }
+    if (lastException != null)
+      throw lastException;
+    throw new NoSuchAlgorithmException(type);
+  }
+
+  /**
+   * Create an instance of <code>CallbackHandler</code> of the designated
+   * <code>type</code> from the named security <code>provider</code>.
+   *
+   * @param type the type of callback handler to create.
+   * @param provider a named security provider to use.
+   * @return a newly created instance of <code>ClassbackHandler</code>.
+   * @throws NoSuchAlgorithmException if no security provider is found to offer
+   *           an implementation of <code>CallbackHandler</code> of the
+   *           designated <code>type</code>.
+   * @throws IllegalArgumentException if either <code>type</code> or
+   *           <code>provider</code> is <code>null</code>, or if
+   *           <code>type</code> is an empty string.
+   */
+  public static CallbackHandler getInstance(String type, String provider)
+      throws NoSuchAlgorithmException, NoSuchProviderException
+  {
+    if (provider == null)
+      throw new IllegalArgumentException("provider MUST NOT be null");
+    Provider p = Security.getProvider(provider);
+    if (p == null)
+      throw new NoSuchProviderException(provider);
+    return getInstance(type, p);
+  }
+
+  /**
+   * Create an instance of <code>CallbackHandler</code> of the designated
+   * <code>type</code> from the designated security <code>provider</code>.
+   *
+   * @param type the type of callback handler to create.
+   * @param provider a security provider to use.
+   * @return a newly created instance of <code>ClassbackHandler</code>.
+   * @throws NoSuchAlgorithmException if no security provider is found to offer
+   *           an implementation of <code>CallbackHandler</code> of the
+   *           designated <code>type</code>.
+   * @throws IllegalArgumentException if either <code>type</code> or
+   *           <code>provider</code> is <code>null</code>, or if
+   *           <code>type</code> is an empty string.
+   */
+  public static CallbackHandler getInstance(String type, Provider provider)
+    throws NoSuchAlgorithmException
+  {
+    StringBuilder sb = new StringBuilder("CallbackHandler of type [")
+        .append(type).append("] from provider[")
+        .append(provider).append("] could not be created");
+    Throwable cause;
+    try
+      {
+        return (CallbackHandler) Engine.getInstance(SERVICE, type, provider);
+      }
+    catch (InvocationTargetException x)
+      {
+        cause = x.getCause();
+        if (cause instanceof NoSuchAlgorithmException)
+          throw (NoSuchAlgorithmException) cause;
+        if (cause == null)
+          cause = x;
+      }
+    catch (ClassCastException x)
+      {
+        cause = x;
+      }
+    NoSuchAlgorithmException x = new NoSuchAlgorithmException(sb.toString());
+    x.initCause(cause);
+    throw x;
+  }
+
+  public void handle(Callback[] callbacks)
+    throws IOException, UnsupportedCallbackException
+  {
+    if (callbacks == null)
+      throw new NullPointerException();
+    for (int i = 0; i < callbacks.length; i++)
+      {
+        if (callbacks[i] == null)
+          continue;
+        if (callbacks[i] instanceof ChoiceCallback)
+          handleChoice((ChoiceCallback) callbacks[i]);
+        else if (callbacks[i] instanceof ConfirmationCallback)
+          handleConfirmation((ConfirmationCallback) callbacks[i]);
+        else if (callbacks[i] instanceof LanguageCallback)
+          handleLanguage((LanguageCallback) callbacks[i]);
+        else if (callbacks[i] instanceof NameCallback)
+          handleName((NameCallback) callbacks[i]);
+        else if (callbacks[i] instanceof PasswordCallback)
+          handlePassword((PasswordCallback) callbacks[i]);
+        else if (callbacks[i] instanceof TextInputCallback)
+          handleTextInput((TextInputCallback) callbacks[i]);
+        else if (callbacks[i] instanceof TextOutputCallback)
+          handleTextOutput((TextOutputCallback) callbacks[i]);
+        else
+          handleOther(callbacks[i]);
+      }
+  }
+
+  public final String getName ()
+  {
+    return name;
+  }
+
+  // Abstract methods.
+  // -------------------------------------------------------------------------
+
+  /**
+   * Handles a {@link ChoiceCallback}.
+   *
+   * @param callback The choice callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handleChoice(ChoiceCallback callback)
+    throws IOException;
+
+  /**
+   * Handles a {@link ConfirmationCallback}.
+   *
+   * @param callback The confirmation callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handleConfirmation(ConfirmationCallback callback)
+    throws IOException;
+
+  /**
+   * Handles a {@link LanguageCallback}.
+   *
+   * @param callback The language callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handleLanguage(LanguageCallback callback)
+    throws IOException;
+
+  /**
+   * Handles a {@link NameCallback}.
+   *
+   * @param callback The name callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handleName(NameCallback callback)
+    throws IOException;
+
+  /**
+   * Handles a {@link PasswordCallback}.
+   *
+   * @param callback The password callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handlePassword(PasswordCallback callback)
+    throws IOException;
+
+  /**
+   * Handles a {@link TextInputCallback}.
+   *
+   * @param callback The text input callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handleTextInput(TextInputCallback callback)
+    throws IOException;
+
+  /**
+   * Handles a {@link TextOutputCallback}.
+   *
+   * @param callback The text output callback.
+   * @throws IOException If an I/O error occurs.
+   */
+  protected abstract void handleTextOutput(TextOutputCallback callback)
+    throws IOException;
+
+  /**
+   * Handles an unknown callback. The default implementation simply throws
+   * an {@link UnsupportedCallbackException}.
+   *
+   * @param callback The callback to handle.
+   * @throws IOException If an I/O error occurs.
+   * @throws UnsupportedCallbackException If the specified callback is not
+   *   supported.
+   */
+  protected void handleOther(Callback callback)
+    throws IOException, UnsupportedCallbackException
+  {
+    throw new UnsupportedCallbackException(callback);
+  }
+}
diff --git a/libjava/classpath/gnu/javax/security/auth/callback/CertificateCallback.java b/libjava/classpath/gnu/javax/security/auth/callback/CertificateCallback.java
new file mode 100644
index 000000000..74885ed21
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/CertificateCallback.java
@@ -0,0 +1,64 @@
+/* CertificateCallback.java --
+   Copyright (C) 2006  Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.security.auth.callback;
+
+import java.security.cert.Certificate;
+
+import javax.security.auth.callback.ConfirmationCallback;
+
+/**
+ * A {@link javax.security.auth.callback.Callback} for confirming whether or
+ * not a certificate may be used. This works similarly to
+ * {@link ConfirmationCallback}, but additionally contains the certificate
+ * being verified. Thus, handlers may present the certificate to the user, when
+ * handling this callback.
+ *
+ * @author Casey Marshall (csm@gnu.org)
+ */
+public class CertificateCallback extends ConfirmationCallback
+{
+  static final long serialVersionUID = 8343869651419225634L;
+  public final Certificate certificate;
+
+  public CertificateCallback(Certificate cert, String prompt)
+  {
+    super(prompt, ERROR, YES_NO_OPTION, NO);
+    this.certificate = cert;
+  }
+}
diff --git a/libjava/classpath/gnu/javax/security/auth/callback/ConsoleCallbackHandler.java b/libjava/classpath/gnu/javax/security/auth/callback/ConsoleCallbackHandler.java
new file mode 100644
index 000000000..4c24ab808
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/ConsoleCallbackHandler.java
@@ -0,0 +1,299 @@
+/* ConsoleCallbackHandler.java --
+   Copyright (C) 2005, 2006  Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.security.auth.callback;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.io.PrintStream;
+
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.StringTokenizer;
+import java.util.TreeSet;
+
+import javax.security.auth.callback.ChoiceCallback;
+import javax.security.auth.callback.ConfirmationCallback;
+import javax.security.auth.callback.LanguageCallback;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextInputCallback;
+import javax.security.auth.callback.TextOutputCallback;
+
+/**
+ * An implementation of {@link CallbackHandler} that reads and writes
+ * information to and from <code>System.in</code> and <code>System.out</code>.
+ */
+public class ConsoleCallbackHandler extends AbstractCallbackHandler
+{
+
+  // Fields.
+  // -------------------------------------------------------------------------
+
+  private final PrintStream out;
+
+  // Constructors.
+  // -------------------------------------------------------------------------
+
+  public ConsoleCallbackHandler()
+  {
+    this (System.out);
+  }
+
+  public ConsoleCallbackHandler (final PrintStream out)
+  {
+    super ("CONSOLE");
+    this.out = out;
+  }
+
+  // Instance methods.
+  // -------------------------------------------------------------------------
+
+  protected void handleChoice(ChoiceCallback c) throws IOException
+  {
+    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    out.println(c.getPrompt());
+    out.print('(');
+    String[] choices = c.getChoices();
+    for (int i = 0; i < choices.length; i++)
+      {
+        out.print(choices[i]);
+        if (i != choices.length - 1)
+          out.print(", ");
+      }
+    out.print(") ");
+    if (c.getDefaultChoice() >= 0 && c.getDefaultChoice() < choices.length)
+      {
+        out.print('[');
+        out.print(choices[c.getDefaultChoice()]);
+        out.print("] ");
+      }
+    String reply = in.readLine();
+    if (reply == null || reply.length() == 0)
+      {
+        c.setSelectedIndex(c.getDefaultChoice());
+        return;
+      }
+    if (!c.allowMultipleSelections())
+      {
+        for (int i = 0; i < choices.length; i++)
+          {
+            if (reply.trim().equals(choices[i]))
+              {
+                c.setSelectedIndex(i);
+                return;
+              }
+          }
+        c.setSelectedIndex(c.getDefaultChoice());
+      }
+    else
+      {
+        TreeSet indices = new TreeSet();
+        StringTokenizer tok = new StringTokenizer(reply, ",");
+        String[] replies = new String[tok.countTokens()];
+        int idx = 0;
+        while (tok.hasMoreTokens())
+          {
+            replies[idx++] = tok.nextToken().trim();
+          }
+        for (int i = 0; i < choices.length; i++)
+          for (int j = 0; j < replies.length; i++)
+            {
+              if (choices[i].equals(replies[j]))
+                {
+                  indices.add(Integer.valueOf(i));
+                }
+            }
+        if (indices.size() == 0)
+          c.setSelectedIndex(c.getDefaultChoice());
+        else
+          {
+            int[] ii = new int[indices.size()];
+            int i = 0;
+            for (Iterator it = indices.iterator(); it.hasNext(); )
+              ii[i++] = ((Integer) it.next()).intValue();
+            c.setSelectedIndexes(ii);
+          }
+      }
+  }
+
+  protected void handleConfirmation(ConfirmationCallback c) throws IOException
+  {
+    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    if (c.getPrompt() != null)
+      out.print(c.getPrompt());
+
+    String[] choices = null;
+    int[] values = null;
+    switch (c.getOptionType())
+      {
+      case ConfirmationCallback.OK_CANCEL_OPTION:
+        out.print(messages.getString("callback.okCancel"));
+        choices = new String[] {
+          messages.getString("callback.ok"),
+          messages.getString("callback.cancel"),
+          messages.getString("callback.shortOk"),
+          messages.getString("callback.shortCancel")
+        };
+        values = new int[] {
+          ConfirmationCallback.OK, ConfirmationCallback.CANCEL,
+          ConfirmationCallback.OK, ConfirmationCallback.CANCEL
+        };
+        break;
+
+      case ConfirmationCallback.YES_NO_CANCEL_OPTION:
+        out.print(messages.getString("callback.yesNoCancel"));
+        choices = new String[] {
+          messages.getString("callback.yes"),
+          messages.getString("callback.no"),
+          messages.getString("callback.cancel"),
+          messages.getString("callback.shortYes"),
+          messages.getString("callback.shortNo"),
+          messages.getString("callback.shortCancel")
+        };
+        values = new int[] {
+          ConfirmationCallback.YES, ConfirmationCallback.NO,
+          ConfirmationCallback.CANCEL, ConfirmationCallback.YES,
+          ConfirmationCallback.NO, ConfirmationCallback.CANCEL
+        };
+        break;
+
+      case ConfirmationCallback.YES_NO_OPTION:
+        out.print(messages.getString("callback.yesNo"));
+        choices = new String[] { messages.getString("callback.yes"),
+                                 messages.getString("callback.no"),
+                                 messages.getString("callback.shortYes"),
+                                 messages.getString("callback.shortNo") };
+        values = new int[] { ConfirmationCallback.YES,
+                             ConfirmationCallback.NO,
+                             ConfirmationCallback.YES,
+                             ConfirmationCallback.NO };
+        int defaultOption = c.getDefaultOption();
+        if (defaultOption > -1 && defaultOption < choices.length)
+          {
+            out.print("[");
+            out.print(choices[defaultOption]);
+            out.print("] ");
+          }
+        break;
+
+      case ConfirmationCallback.UNSPECIFIED_OPTION:
+        choices = c.getOptions();
+        values = new int[choices.length];
+        for (int i = 0; i < values.length; i++)
+          values[i] = i;
+        out.print('(');
+        for (int i = 0; i < choices.length; i++)
+          {
+            out.print(choices[i]);
+            if (i != choices.length - 1)
+              out.print(", ");
+          }
+        out.print(") [");
+        out.print(choices[c.getDefaultOption()]);
+        out.print("] ");
+        break;
+
+      default:
+        throw new IllegalArgumentException();
+      }
+    String reply = in.readLine();
+    if (reply == null)
+      {
+        c.setSelectedIndex(c.getDefaultOption());
+        return;
+      }
+    reply = reply.trim();
+    for (int i = 0; i < choices.length; i++)
+      if (reply.equalsIgnoreCase(choices[i]))
+        {
+          c.setSelectedIndex(values[i]);
+          return;
+        }
+    c.setSelectedIndex(c.getDefaultOption());
+  }
+
+  protected void handleLanguage(LanguageCallback c) throws IOException
+  {
+    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    out.print(messages.getString("callback.language"));
+    String reply = null;
+    reply = in.readLine();
+    if (reply == null)
+      {
+        c.setLocale(Locale.getDefault());
+      }
+    else
+      {
+        c.setLocale(new Locale(reply.trim()));
+      }
+  }
+
+  protected void handleName(NameCallback c) throws IOException
+  {
+    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    out.print(c.getPrompt());
+    String name = in.readLine();
+    if (name != null)
+      c.setName(name.trim());
+  }
+
+  protected void handlePassword(PasswordCallback c) throws IOException
+  {
+    out.print(c.getPrompt());
+    BufferedReader in =
+      new BufferedReader(new InputStreamReader(System.in));
+    String pass = in.readLine();
+    c.setPassword(pass.toCharArray());
+  }
+
+  protected void handleTextInput(TextInputCallback c) throws IOException
+  {
+    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    out.print(c.getPrompt());
+    String text = in.readLine();
+    if (text != null)
+      c.setText(text);
+  }
+
+  protected void handleTextOutput(TextOutputCallback c)
+  {
+    out.print(c.getMessage());
+  }
+}
diff --git a/libjava/classpath/gnu/javax/security/auth/callback/DefaultCallbackHandler.java b/libjava/classpath/gnu/javax/security/auth/callback/DefaultCallbackHandler.java
new file mode 100644
index 000000000..df0360b2e
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/DefaultCallbackHandler.java
@@ -0,0 +1,109 @@
+/* DefaultCallbackHandler.java --
+   Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.security.auth.callback;
+
+import java.util.Locale;
+
+import javax.security.auth.callback.ChoiceCallback;
+import javax.security.auth.callback.ConfirmationCallback;
+import javax.security.auth.callback.LanguageCallback;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextInputCallback;
+import javax.security.auth.callback.TextOutputCallback;
+
+/**
+ * This trivial implementation of {@link CallbackHandler} sets its
+ * {@link Callback} arguments to default values, with no user interaction.
+ */
+public class DefaultCallbackHandler extends AbstractCallbackHandler
+{
+
+  // Constructor.
+  // -------------------------------------------------------------------------
+
+  public DefaultCallbackHandler()
+  {
+    super("DEFAULT");
+  }
+
+  // Instance methods.
+  // -------------------------------------------------------------------------
+
+  protected void handleChoice(ChoiceCallback c)
+  {
+    c.setSelectedIndex(c.getDefaultChoice());
+  }
+
+  protected void handleConfirmation(ConfirmationCallback c)
+  {
+    if (c.getOptionType() == ConfirmationCallback.YES_NO_OPTION)
+      c.setSelectedIndex(ConfirmationCallback.NO);
+    else if (c.getOptionType() == ConfirmationCallback.YES_NO_CANCEL_OPTION)
+      c.setSelectedIndex(ConfirmationCallback.NO);
+    else if (c.getOptionType() == ConfirmationCallback.OK_CANCEL_OPTION)
+      c.setSelectedIndex(ConfirmationCallback.OK);
+    else
+      c.setSelectedIndex(c.getDefaultOption());
+  }
+
+  protected void handleLanguage(LanguageCallback c)
+  {
+    c.setLocale(Locale.getDefault());
+  }
+
+  protected void handleName(NameCallback c)
+  {
+    c.setName(System.getProperty("user.name"));
+  }
+
+  protected void handlePassword(PasswordCallback c)
+  {
+    c.setPassword(new char[0]);
+  }
+
+  protected void handleTextInput(TextInputCallback c)
+  {
+    c.setText("");
+  }
+
+  protected void handleTextOutput(TextOutputCallback c)
+  {
+  }
+}
diff --git a/libjava/classpath/gnu/javax/security/auth/callback/GnuCallbacks.java b/libjava/classpath/gnu/javax/security/auth/callback/GnuCallbacks.java
new file mode 100644
index 000000000..9fd72f926
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/GnuCallbacks.java
@@ -0,0 +1,64 @@
+/* GnuCallbacks.java -- Provider for callback implementations.
+   Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.security.auth.callback;
+
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.security.Provider;
+
+public final class GnuCallbacks extends Provider
+{
+  public GnuCallbacks()
+  {
+    super("GNU-CALLBACKS", 2.1, "Implementations of various callback handlers.");
+
+    AccessController.doPrivileged(new PrivilegedAction()
+      {
+        public Object run()
+        {
+          put("CallbackHandler.Default", DefaultCallbackHandler.class.getName());
+          put("CallbackHandler.Console", ConsoleCallbackHandler.class.getName());
+          put("CallbackHandler.AWT", AWTCallbackHandler.class.getName());
+          put("CallbackHandler.Swing", SwingCallbackHandler.class.getName());
+
+          return null;
+        }
+      });
+  }
+}
diff --git a/libjava/classpath/gnu/javax/security/auth/callback/SwingCallbackHandler.java b/libjava/classpath/gnu/javax/security/auth/callback/SwingCallbackHandler.java
new file mode 100644
index 000000000..c9d5b3eb5
--- /dev/null
+++ b/libjava/classpath/gnu/javax/security/auth/callback/SwingCallbackHandler.java
@@ -0,0 +1,587 @@
+ /* SwingCallbackHandler.java --
+    Copyright (C) 2006  Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.security.auth.callback;
+
+import java.awt.Container;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.Font;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import java.io.IOException;
+
+import java.util.Locale;
+
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.ChoiceCallback;
+import javax.security.auth.callback.ConfirmationCallback;
+import javax.security.auth.callback.LanguageCallback;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextInputCallback;
+import javax.security.auth.callback.TextOutputCallback;
+
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JPasswordField;
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+import javax.swing.JTextField;
+import javax.swing.ListSelectionModel;
+
+public class SwingCallbackHandler extends AbstractCallbackHandler
+{
+  public SwingCallbackHandler ()
+  {
+    super ("SWING");
+  }
+
+  protected void handleChoice (final ChoiceCallback callback)
+    throws IOException
+  {
+    final JDialog dialog = new JDialog ();
+    dialog.setResizable (false);
+    Container content = dialog.getContentPane ();
+    GridBagLayout layout = new GridBagLayout ();
+    content.setLayout (layout);
+    JLabel prompt = new JLabel (callback.getPrompt (), JLabel.LEFT);
+    content.add (prompt, new GridBagConstraints (0, 0, 1, 1, 0, 0,
+                                                 GridBagConstraints.WEST,
+                                                 GridBagConstraints.NONE,
+                                                 new Insets (5, 5, 5, 5), 5, 5));
+
+    String[] choices = callback.getChoices ();
+    final JList choicesList = new JList (choices);
+    JScrollPane choicesPane = new JScrollPane (choicesList,
+                                               JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
+                                               JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
+    final int defaultChoice = callback.getDefaultChoice ();
+    choicesList.setSelectedIndex (defaultChoice);
+    choicesList.setSelectionMode (callback.allowMultipleSelections ()
+                                  ? ListSelectionModel.MULTIPLE_INTERVAL_SELECTION
+                                  : ListSelectionModel.SINGLE_SELECTION);
+    content.add (choicesPane, new GridBagConstraints (0, 1, 1, 1, 1.0, 1.0,
+                                                      GridBagConstraints.CENTER,
+                                                      GridBagConstraints.BOTH,
+                                                      new Insets (0, 10, 0, 10), 5, 5));
+
+    JPanel confirmButtons = new JPanel ();
+    confirmButtons.setLayout (new FlowLayout (FlowLayout.RIGHT));
+    JButton cancel = new JButton (messages.getString ("callback.cancel"));
+    JButton ok = new JButton (messages.getString ("callback.ok"));
+    confirmButtons.add (cancel);
+    confirmButtons.add (ok);
+    content.add (confirmButtons, new GridBagConstraints (0, 2, 1, 1, 0, 0,
+                                                         GridBagConstraints.EAST,
+                                                         GridBagConstraints.NONE,
+                                                         new Insets (5, 5, 5, 5),
+                                                         0, 0));
+    dialog.getRootPane ().setDefaultButton (ok);
+
+    cancel.addActionListener (new ActionListener ()
+      {
+        public void actionPerformed (final ActionEvent ae)
+        {
+          callback.setSelectedIndex (defaultChoice);
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      });
+    ok.addActionListener (new ActionListener ()
+      {
+        public void actionPerformed (final ActionEvent ae)
+        {
+          if (callback.allowMultipleSelections ())
+            {
+              int[] indices = choicesList.getSelectedIndices ();
+              if (indices != null && indices.length > 0)
+                callback.setSelectedIndexes (indices);
+              else
+                callback.setSelectedIndex (defaultChoice);
+            }
+          else
+            {
+              int selected = choicesList.getSelectedIndex ();
+              if (selected != -1)
+                callback.setSelectedIndex (selected);
+              else
+                callback.setSelectedIndex (defaultChoice);
+            }
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      });
+
+    dialog.pack ();
+    dialog.setSize (new Dimension (400, 400));
+    dialog.setVisible (true);
+    waitForInput (dialog, callback);
+  }
+
+  protected void handleConfirmation (final ConfirmationCallback callback)
+    throws IOException
+  {
+    final JDialog dialog = new JDialog ();
+    switch (callback.getMessageType ())
+      {
+      case ConfirmationCallback.ERROR:
+        dialog.setTitle (messages.getString ("callback.error"));
+        break;
+      case ConfirmationCallback.WARNING:
+        dialog.setTitle (messages.getString ("callback.warning"));
+        break;
+      case ConfirmationCallback.INFORMATION:
+        dialog.setTitle (messages.getString ("callback.information"));
+        break;
+      }
+    Container content = dialog.getContentPane ();
+    content.setLayout (new GridBagLayout ());
+
+    String prompt = callback.getPrompt ();
+    if (prompt != null)
+      {
+        content.add (new JLabel (prompt),
+                     new GridBagConstraints (0, 0, 1, 1, 0, 0,
+                                             GridBagConstraints.WEST,
+                                             GridBagConstraints.NONE,
+                                             new Insets (5, 5, 5, 25), 0, 0));
+      }
+
+    final String[] options = callback.getOptions ();
+    ActionListener listener = new ActionListener ()
+      {
+        public void actionPerformed (ActionEvent ae)
+        {
+          String cmd = ae.getActionCommand ();
+          if (options != null)
+            {
+              for (int i = 0; i < options.length; i++)
+                {
+                  if (cmd.equals (options[i]))
+                    {
+                      callback.setSelectedIndex (i);
+                      break;
+                    }
+                }
+            }
+          else
+            {
+              if (cmd.equals ("cancel"))
+                callback.setSelectedIndex (ConfirmationCallback.CANCEL);
+              else if (cmd.equals ("okay"))
+                callback.setSelectedIndex (ConfirmationCallback.OK);
+              else if (cmd.equals ("yes"))
+                callback.setSelectedIndex (ConfirmationCallback.YES);
+              else if (cmd.equals ("no"))
+                callback.setSelectedIndex (ConfirmationCallback.NO);
+            }
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      };
+
+    JPanel buttons = new JPanel ();
+    buttons.setLayout (new FlowLayout (FlowLayout.RIGHT));
+    switch (callback.getOptionType ())
+      {
+      case ConfirmationCallback.YES_NO_CANCEL_OPTION:
+        {
+          JButton cancel = new JButton (messages.getString ("callback.cancel"));
+          buttons.add (cancel);
+          cancel.setActionCommand ("cancel");
+          cancel.addActionListener (listener);
+        }
+        /* Fall-through. */
+      case ConfirmationCallback.YES_NO_OPTION:
+        {
+          JButton yes = new JButton (messages.getString ("callback.yes"));
+          JButton no = new JButton (messages.getString ("callback.no"));
+          buttons.add (no);
+          buttons.add (yes);
+          yes.setActionCommand ("yes");
+          yes.addActionListener (listener);
+          no.setActionCommand ("no");
+          no.addActionListener (listener);
+          dialog.getRootPane ().setDefaultButton (yes);
+        }
+        break;
+      case ConfirmationCallback.OK_CANCEL_OPTION:
+        {
+          JButton okay = new JButton (messages.getString ("callback.ok"));
+          JButton cancel = new JButton (messages.getString ("callback.cancel"));
+          buttons.add (cancel);
+          buttons.add (okay);
+          okay.setActionCommand ("okay");
+          okay.addActionListener (listener);
+          cancel.setActionCommand ("cancel");
+          cancel.addActionListener (listener);
+          dialog.getRootPane ().setDefaultButton (okay);
+        }
+        break;
+      case ConfirmationCallback.UNSPECIFIED_OPTION:
+        for (int i = 0; i < options.length; i++)
+          {
+            JButton button = new JButton (options[i]);
+            buttons.add (button);
+            button.setActionCommand (options[i]);
+            button.addActionListener (listener);
+            if (i == options.length - 1)
+              dialog.getRootPane ().setDefaultButton (button);
+          }
+      }
+    content.add (buttons,
+                 new GridBagConstraints (0, GridBagConstraints.RELATIVE,
+                                         1, 1, 1, 1,
+                                         GridBagConstraints.SOUTHEAST,
+                                         GridBagConstraints.BOTH,
+                                         new Insets (5, 5, 5, 5), 0, 0));
+    dialog.setResizable (false);
+    dialog.pack ();
+    dialog.setVisible (true);
+    waitForInput (dialog, callback);
+  }
+
+  protected void handleLanguage (final LanguageCallback callback)
+    throws IOException
+  {
+    Locale locale = Locale.getDefault ();
+    Locale[] locales = Locale.getAvailableLocales ();
+    String[] localeNames = new String[locales.length+1];
+    int defaultIndex = 0;
+    for (int i = 0; i < locales.length; i++)
+      {
+        localeNames[i+1] = locales[i].getDisplayLanguage (locales[i]);
+        String country = locales[i].getDisplayCountry (locales[i]);
+        if (country.length () > 0)
+          localeNames[i+1] += " (" + country + ")";
+        if (locales[i].equals (locale))
+          defaultIndex = i;
+      }
+    locales[0] = locale;
+    localeNames[0] = locale.getDisplayLanguage (locale);
+    String country = locale.getDisplayCountry (locale);
+    if (country.length () > 0)
+      localeNames[0] += " (" + country + ")";
+    ChoiceCallback cb = new ChoiceCallback (messages.getString ("callback.language"),
+                                                                localeNames, 0,
+                                                                false);
+    handleChoice (cb);
+    int selected = cb.getSelectedIndexes ()[0];
+    if (selected > 0)
+      callback.setLocale (locales[selected - 1]);
+    else
+      callback.setLocale (locale);
+  }
+
+  protected void handleName (final NameCallback callback)
+    throws IOException
+  {
+    final JDialog dialog = new JDialog ();
+    Container content = dialog.getContentPane ();
+    content.setLayout (new GridBagLayout ());
+
+    content.add (new JLabel (callback.getPrompt ()),
+                             new GridBagConstraints (0, 0, 1, 1, 0, 0,
+                                                     GridBagConstraints.NORTHEAST,
+                                                     GridBagConstraints.VERTICAL,
+                                                     new Insets (10, 10, 15, 5), 0, 0));
+
+    final JTextField name = new JTextField ();
+    name.setColumns (20);
+    String _name;
+    if ((_name = callback.getDefaultName ()) != null)
+      name.setText (_name);
+    content.add (name, new GridBagConstraints (1, 0, 1, 1, 1, 1,
+                                               GridBagConstraints.NORTHWEST,
+                                               GridBagConstraints.BOTH,
+                                               new Insets (10, 5, 15, 10), 0, 0));
+
+    ActionListener listener = new ActionListener ()
+      {
+        public void actionPerformed (ActionEvent ae)
+        {
+          String cmd = ae.getActionCommand ();
+          if (cmd.equals ("okay"))
+            callback.setName (name.getText ());
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      };
+
+    JPanel buttons = new JPanel ();
+    buttons.setLayout (new FlowLayout (FlowLayout.RIGHT));
+    JButton cancel = new JButton (messages.getString ("callback.cancel"));
+    JButton okay = new JButton (messages.getString ("callback.ok"));
+    cancel.setActionCommand ("cancel");
+    cancel.addActionListener (listener);
+    buttons.add (cancel);
+    okay.setActionCommand ("okay");
+    okay.addActionListener (listener);
+    buttons.add (okay);
+    content.add (buttons, new GridBagConstraints (0, 1, 2, 1, 0, 0,
+                                                  GridBagConstraints.SOUTHEAST,
+                                                  GridBagConstraints.NONE,
+                                                  new Insets (0, 10, 10, 10), 0, 0));
+
+    dialog.setResizable (false);
+    dialog.pack ();
+    dialog.setVisible (true);
+    dialog.getRootPane ().setDefaultButton (okay);
+    waitForInput (dialog, callback);
+  }
+
+  protected void handlePassword (final PasswordCallback callback)
+    throws IOException
+  {
+    final JDialog dialog = new JDialog ();
+    Container content = dialog.getContentPane ();
+    content.setLayout (new GridBagLayout ());
+
+    content.add (new JLabel (callback.getPrompt ()),
+                             new GridBagConstraints (0, 0, 1, 1, 0, 0,
+                                                     GridBagConstraints.NORTHEAST,
+                                                     GridBagConstraints.VERTICAL,
+                                                     new Insets (10, 10, 15, 5), 0, 0));
+
+    final JPasswordField password = new JPasswordField ();
+    password.setColumns (20);
+    password.setEchoChar (callback.isEchoOn () ? '\u0000' : '\u2022');
+    content.add (password, new GridBagConstraints (1, 0, 1, 1, 1, 1,
+                                                   GridBagConstraints.NORTHWEST,
+                                                   GridBagConstraints.BOTH,
+                                                   new Insets (10, 5, 15, 10), 0, 0));
+
+    ActionListener listener = new ActionListener ()
+      {
+        public void actionPerformed (ActionEvent ae)
+        {
+          String cmd = ae.getActionCommand ();
+          if (cmd.equals ("okay"))
+            callback.setPassword (password.getPassword ());
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      };
+
+    JPanel buttons = new JPanel ();
+    buttons.setLayout (new FlowLayout (FlowLayout.RIGHT));
+    JButton cancel = new JButton (messages.getString ("callback.cancel"));
+    JButton okay = new JButton (messages.getString ("callback.ok"));
+    cancel.setActionCommand ("cancel");
+    cancel.addActionListener (listener);
+    buttons.add (cancel);
+    okay.setActionCommand ("okay");
+    okay.addActionListener (listener);
+    buttons.add (okay);
+    content.add (buttons, new GridBagConstraints (0, 1, 2, 1, 0, 0,
+                                                  GridBagConstraints.SOUTHEAST,
+                                                  GridBagConstraints.NONE,
+                                                  new Insets (0, 10, 10, 10), 0, 0));
+
+    dialog.setResizable (false);
+    dialog.pack ();
+    dialog.setVisible (true);
+    dialog.getRootPane ().setDefaultButton (okay);
+    waitForInput (dialog, callback);
+  }
+
+  protected void handleTextInput (final TextInputCallback callback)
+    throws IOException
+  {
+    final JDialog dialog = new JDialog ();
+    Container content = dialog.getContentPane ();
+    content.setLayout (new GridBagLayout ());
+
+    content.add (new JLabel (callback.getPrompt ()),
+                             new GridBagConstraints (0, 0, 1, 1, 0, 0,
+                                                     GridBagConstraints.NORTHWEST,
+                                                     GridBagConstraints.NONE,
+                                                     new Insets (10, 10, 15, 5), 0, 0));
+
+    final JTextArea text = new JTextArea (24, 80);
+    text.setEditable (true);
+    String _text;
+    if ((_text = callback.getDefaultText ()) != null)
+      text.setText (_text);
+    text.setFont (new Font ("Monospaced", Font.PLAIN, 12));
+    JScrollPane textPane = new JScrollPane (text,
+                                            JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
+                                            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
+    content.add (textPane,
+                 new GridBagConstraints (0, 1, 1, 1, 1, 1,
+                                         GridBagConstraints.CENTER,
+                                         GridBagConstraints.BOTH,
+                                         new Insets (5, 10, 5, 10), 0, 0));
+
+    ActionListener listener = new ActionListener ()
+      {
+        public void actionPerformed (ActionEvent ae)
+        {
+          String cmd = ae.getActionCommand ();
+          if (cmd.equals ("okay"))
+            callback.setText (text.getText ());
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      };
+
+    JPanel buttons = new JPanel ();
+    buttons.setLayout (new FlowLayout (FlowLayout.RIGHT));
+    JButton cancel = new JButton (messages.getString ("callback.cancel"));
+    JButton okay = new JButton (messages.getString ("callback.ok"));
+    cancel.setActionCommand ("cancel");
+    cancel.addActionListener (listener);
+    buttons.add (cancel);
+    okay.setActionCommand ("okay");
+    okay.addActionListener (listener);
+    buttons.add (okay);
+    content.add (buttons, new GridBagConstraints (0, 2, 1, 1, 0, 0,
+                                                  GridBagConstraints.SOUTHEAST,
+                                                  GridBagConstraints.NONE,
+                                                  new Insets (0, 10, 10, 10), 0, 0));
+
+    dialog.setResizable (true);
+    dialog.pack ();
+    dialog.setVisible (true);
+    dialog.getRootPane ().setDefaultButton (okay);
+    waitForInput (dialog, callback);
+  }
+
+  protected void handleTextOutput (final TextOutputCallback callback)
+    throws IOException
+  {
+    final JDialog dialog = new JDialog ();
+    switch (callback.getMessageType ())
+      {
+      case TextOutputCallback.ERROR:
+        dialog.setTitle (messages.getString ("callback.error"));
+        break;
+      case TextOutputCallback.WARNING:
+        dialog.setTitle (messages.getString ("callback.warning"));
+        break;
+      case TextOutputCallback.INFORMATION:
+        dialog.setTitle (messages.getString ("callback.information"));
+        break;
+      }
+    Container content = dialog.getContentPane ();
+    content.setLayout (new GridBagLayout ());
+
+    final JTextArea text = new JTextArea (24, 80);
+    text.setEditable (false);
+    text.setText (callback.getMessage ());
+    text.setFont (new Font ("Monospaced", Font.PLAIN, 12));
+    JScrollPane textPane = new JScrollPane (text,
+                                            JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
+                                            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
+    content.add (textPane,
+                 new GridBagConstraints (0, 0, 1, 1, 1, 1,
+                                         GridBagConstraints.CENTER,
+                                         GridBagConstraints.BOTH,
+                                         new Insets (10, 10, 5, 10), 0, 0));
+
+    ActionListener listener = new ActionListener ()
+      {
+        public void actionPerformed (ActionEvent ae)
+        {
+          dialog.setVisible (false);
+          synchronized (callback)
+            {
+              callback.notify ();
+            }
+        }
+      };
+
+    JButton okay = new JButton (messages.getString ("callback.ok"));
+    okay.setActionCommand ("okay");
+    okay.addActionListener (listener);
+    content.add (okay, new GridBagConstraints (0, 1, 1, 1, 0, 0,
+                                               GridBagConstraints.SOUTHEAST,
+                                               GridBagConstraints.NONE,
+                                               new Insets (0, 10, 10, 10), 0, 0));
+
+    dialog.setResizable (true);
+    dialog.pack ();
+    dialog.setVisible (true);
+    dialog.getRootPane ().setDefaultButton (okay);
+    waitForInput (dialog, callback);
+  }
+
+  private void waitForInput (JDialog dialog, Callback callback)
+  {
+    synchronized (callback)
+      {
+        while (dialog.isVisible ())
+          {
+            try
+              {
+                callback.wait (1000);
+              }
+            catch (InterruptedException ignored)
+              {
+              }
+          }
+      }
+    dialog.dispose ();
+  }
+}