001    /**
002     *
003     * Copyright 2005 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    package org.acme;
018    
019    import java.io.IOException;
020    import javax.security.auth.callback.CallbackHandler;
021    import javax.security.auth.callback.Callback;
022    import javax.security.auth.callback.UnsupportedCallbackException;
023    import javax.security.auth.callback.NameCallback;
024    import javax.security.auth.callback.PasswordCallback;
025    
026    /**
027     * @version $Rev: 356022 $ $Date: 2005-12-11 12:58:34 -0800 (Sun, 11 Dec 2005) $
028     */
029    public class MagicGBallCallbackHandler implements CallbackHandler {
030    
031        public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
032            for (int i = 0; i < callbacks.length; i++) {
033                Callback callback = callbacks[i];
034                if (callback instanceof NameCallback) {
035                    ((NameCallback)callback).setName("system");
036                } else if (callback instanceof PasswordCallback) {
037                    ((PasswordCallback)callback).setPassword("manager".toCharArray());
038                } else {
039                    throw new UnsupportedCallbackException(callback);
040                }
041                System.out.println("CallbackHandler set user=system, password=manager");
042            }
043        }
044    }