kerberos-shared/src/main/java/org/apache/directory/server/kerberos/shared/jaas/CallbackHandlerBean.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */
package org.apache.directory.server.kerberos.shared.jaas;


import java.io.IOException;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;


/**
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$, $Date$
 */
public class CallbackHandlerBean implements CallbackHandler
{
    private String name;
    private String password;


    /**
     * Creates a new instance of CallbackHandlerBean.
     *
     * @param name
     * @param password
     */
    public CallbackHandlerBean( String name, String password )
    {
        this.name = name;
        this.password = password;
    }


    public void handle( Callback[] callbacks ) throws UnsupportedCallbackException, IOException
    {
        for ( int ii = 0; ii < callbacks.length; ii++ )
        {
            Callback callBack = callbacks[ii];

            // Handles username callback.
            if ( callBack instanceof NameCallback )
            {
                NameCallback nameCallback = ( NameCallback ) callBack;
                nameCallback.setName( name );
                // Handles password callback.
            }
            else if ( callBack instanceof PasswordCallback )
            {
                PasswordCallback passwordCallback = ( PasswordCallback ) callBack;
                passwordCallback.setPassword( password.toCharArray() );
            }
            else
            {
                throw new UnsupportedCallbackException( callBack, "Callback not supported" );
            }
        }
    }
}