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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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package com.sun.security.auth.callback;
/* JAAS imports */
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.ConfirmationCallback;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.TextOutputCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
/* Java imports */
import java.awt.Component;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.swing.Box;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
Uses a Swing dialog window to query the user for answers to
authentication questions.
This can be used by a JAAS application to instantiate a
CallbackHandler
See Also: - callback
/**
* <p>
* Uses a Swing dialog window to query the user for answers to
* authentication questions.
* This can be used by a JAAS application to instantiate a
* CallbackHandler
* @see javax.security.auth.callback
*/
public class DialogCallbackHandler implements CallbackHandler {
/* -- Fields -- */
/* The parent window, or null if using the default parent */
private Component parentComponent;
private static final int JPasswordFieldLen = 8 ;
private static final int JTextFieldLen = 8 ;
/* -- Methods -- */
Creates a callback dialog with the default parent window.
/**
* Creates a callback dialog with the default parent window.
*/
public DialogCallbackHandler() { }
Creates a callback dialog and specify the parent window.
Params: - parentComponent – the parent window -- specify
null
for the default parent
/**
* Creates a callback dialog and specify the parent window.
*
* @param parentComponent the parent window -- specify <code>null</code>
* for the default parent
*/
public DialogCallbackHandler(Component parentComponent) {
this.parentComponent = parentComponent;
}
/*
* An interface for recording actions to carry out if the user
* clicks OK for the dialog.
*/
private static interface Action {
void perform();
}
Handles the specified set of callbacks.
Params: - callbacks – the callbacks to handle
Throws: - UnsupportedCallbackException – if the callback is not an
instance of NameCallback or PasswordCallback
/**
* Handles the specified set of callbacks.
*
* @param callbacks the callbacks to handle
* @throws UnsupportedCallbackException if the callback is not an
* instance of NameCallback or PasswordCallback
*/
public void handle(Callback[] callbacks)
throws UnsupportedCallbackException
{
/* Collect messages to display in the dialog */
final List<Object> messages = new ArrayList<>(3);
/* Collection actions to perform if the user clicks OK */
final List<Action> okActions = new ArrayList<>(2);
ConfirmationInfo confirmation = new ConfirmationInfo();
for (int i = 0; i < callbacks.length; i++) {
if (callbacks[i] instanceof TextOutputCallback) {
TextOutputCallback tc = (TextOutputCallback) callbacks[i];
switch (tc.getMessageType()) {
case TextOutputCallback.INFORMATION:
confirmation.messageType = JOptionPane.INFORMATION_MESSAGE;
break;
case TextOutputCallback.WARNING:
confirmation.messageType = JOptionPane.WARNING_MESSAGE;
break;
case TextOutputCallback.ERROR:
confirmation.messageType = JOptionPane.ERROR_MESSAGE;
break;
default:
throw new UnsupportedCallbackException(
callbacks[i], "Unrecognized message type");
}
messages.add(tc.getMessage());
} else if (callbacks[i] instanceof NameCallback) {
final NameCallback nc = (NameCallback) callbacks[i];
JLabel prompt = new JLabel(nc.getPrompt());
final JTextField name = new JTextField(JTextFieldLen);
String defaultName = nc.getDefaultName();
if (defaultName != null) {
name.setText(defaultName);
}
/*
* Put the prompt and name in a horizontal box,
* and add that to the set of messages.
*/
Box namePanel = Box.createHorizontalBox();
namePanel.add(prompt);
namePanel.add(name);
messages.add(namePanel);
/* Store the name back into the callback if OK */
okActions.add(new Action() {
public void perform() {
nc.setName(name.getText());
}
});
} else if (callbacks[i] instanceof PasswordCallback) {
final PasswordCallback pc = (PasswordCallback) callbacks[i];
JLabel prompt = new JLabel(pc.getPrompt());
final JPasswordField password =
new JPasswordField(JPasswordFieldLen);
if (!pc.isEchoOn()) {
password.setEchoChar('*');
}
Box passwordPanel = Box.createHorizontalBox();
passwordPanel.add(prompt);
passwordPanel.add(password);
messages.add(passwordPanel);
okActions.add(new Action() {
public void perform() {
pc.setPassword(password.getPassword());
}
});
} else if (callbacks[i] instanceof ConfirmationCallback) {
ConfirmationCallback cc = (ConfirmationCallback)callbacks[i];
confirmation.setCallback(cc);
if (cc.getPrompt() != null) {
messages.add(cc.getPrompt());
}
} else {
throw new UnsupportedCallbackException(
callbacks[i], "Unrecognized Callback");
}
}
/* Display the dialog */
int result = JOptionPane.showOptionDialog(
parentComponent,
messages.toArray(),
"Confirmation", /* title */
confirmation.optionType,
confirmation.messageType,
null, /* icon */
confirmation.options, /* options */
confirmation.initialValue); /* initialValue */
/* Perform the OK actions */
if (result == JOptionPane.OK_OPTION
|| result == JOptionPane.YES_OPTION)
{
Iterator<Action> iterator = okActions.iterator();
while (iterator.hasNext()) {
iterator.next().perform();
}
}
confirmation.handleResult(result);
}
/*
* Provides assistance with translating between JAAS and Swing
* confirmation dialogs.
*/
private static class ConfirmationInfo {
private int[] translations;
int optionType = JOptionPane.OK_CANCEL_OPTION;
Object[] options = null;
Object initialValue = null;
int messageType = JOptionPane.QUESTION_MESSAGE;
private ConfirmationCallback callback;
/* Set the confirmation callback handler */
void setCallback(ConfirmationCallback callback)
throws UnsupportedCallbackException
{
this.callback = callback;
int confirmationOptionType = callback.getOptionType();
switch (confirmationOptionType) {
case ConfirmationCallback.YES_NO_OPTION:
optionType = JOptionPane.YES_NO_OPTION;
translations = new int[] {
JOptionPane.YES_OPTION, ConfirmationCallback.YES,
JOptionPane.NO_OPTION, ConfirmationCallback.NO,
JOptionPane.CLOSED_OPTION, ConfirmationCallback.NO
};
break;
case ConfirmationCallback.YES_NO_CANCEL_OPTION:
optionType = JOptionPane.YES_NO_CANCEL_OPTION;
translations = new int[] {
JOptionPane.YES_OPTION, ConfirmationCallback.YES,
JOptionPane.NO_OPTION, ConfirmationCallback.NO,
JOptionPane.CANCEL_OPTION, ConfirmationCallback.CANCEL,
JOptionPane.CLOSED_OPTION, ConfirmationCallback.CANCEL
};
break;
case ConfirmationCallback.OK_CANCEL_OPTION:
optionType = JOptionPane.OK_CANCEL_OPTION;
translations = new int[] {
JOptionPane.OK_OPTION, ConfirmationCallback.OK,
JOptionPane.CANCEL_OPTION, ConfirmationCallback.CANCEL,
JOptionPane.CLOSED_OPTION, ConfirmationCallback.CANCEL
};
break;
case ConfirmationCallback.UNSPECIFIED_OPTION:
options = callback.getOptions();
/*
* There's no way to know if the default option means
* to cancel the login, but there isn't a better way
* to guess this.
*/
translations = new int[] {
JOptionPane.CLOSED_OPTION, callback.getDefaultOption()
};
break;
default:
throw new UnsupportedCallbackException(
callback,
"Unrecognized option type: " + confirmationOptionType);
}
int confirmationMessageType = callback.getMessageType();
switch (confirmationMessageType) {
case ConfirmationCallback.WARNING:
messageType = JOptionPane.WARNING_MESSAGE;
break;
case ConfirmationCallback.ERROR:
messageType = JOptionPane.ERROR_MESSAGE;
break;
case ConfirmationCallback.INFORMATION:
messageType = JOptionPane.INFORMATION_MESSAGE;
break;
default:
throw new UnsupportedCallbackException(
callback,
"Unrecognized message type: " + confirmationMessageType);
}
}
/* Process the result returned by the Swing dialog */
void handleResult(int result) {
if (callback == null) {
return;
}
for (int i = 0; i < translations.length; i += 2) {
if (translations[i] == result) {
result = translations[i + 1];
break;
}
}
callback.setSelectedIndex(result);
}
}
}