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package com.sun.enterprise.security.auth.login;
import java.io.*;
import javax.security.auth.callback.*;
import com.sun.enterprise.util.LocalStringManagerImpl;
import com.sun.enterprise.security.TextLoginDialog;
import com.sun.enterprise.security.GUILoginDialog;
/**
* This is the default callback handler provided by the application
* client container. The container tries to use the application specified
* callback handler (if provided). If there is no callback handler or if
* the handler cannot be instantiated then this default handler is used.
*
* Note: User-defined Callback Handlers which intend to indicate cancel
* status must extend this class and set the ThreadLocal cancelStatus.
*/
public class LoginCallbackHandler implements CallbackHandler
{
private boolean isGUI;
private static final LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(LoginCallbackHandler.class);
protected ThreadLocal<Boolean> cancelStatus = new ThreadLocal<Boolean>();
/**
* Check whether the authentication was cancelled by the user.
* @return boolean indicating whether the authentication was cancelled.
*/
public boolean getCancelStatus() {
boolean cancelled = cancelStatus.get();
cancelStatus.set(false);
return cancelled;
}
public LoginCallbackHandler() {
this(true);
}
public LoginCallbackHandler(boolean gui) {
isGUI = gui;
cancelStatus.set(false);
}
/**
* This is the callback method called when authentication data is
* required. It either pops up a dialog box to request authentication
* data or use text input.
* @param the callback object instances supported by the login module.
*/
public void handle(Callback[] callbacks) throws IOException,
UnsupportedCallbackException
{
if(isGUI) {
String user = localStrings.getLocalString("login.user", "user");
new GUILoginDialog(user, callbacks);
for (int i = 0; i < callbacks.length; i++) {
if (callbacks[i] instanceof NameCallback) {
cancelStatus.set(((NameCallback) callbacks[i]).getName() == null);
break;
}
}
} else {
new TextLoginDialog(callbacks);
}
}
}