org.acegisecurity.providers.jaas.JaasPasswordCallbackHandler Maven / Gradle / Ivy

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/* Copyright 2004 Acegi Technology Pty Limited
 *
 * Licensed 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.acegisecurity.providers.jaas;

import org.acegisecurity.Authentication;

import java.io.IOException;

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


/**
 * The most basic Callbacks to be handled when using a LoginContext from JAAS,
 * are the NameCallback and PasswordCallback. The acegi security framework
 * provides the JaasPasswordCallbackHandler specifically tailored to handling
 * the PasswordCallback. 

 *
 * @author Ray Krueger
 * @version $Id: JaasPasswordCallbackHandler.java,v 1.4 2005/11/17 00:55:52 benalex Exp $
 *
 * @see Callback
 * @see PasswordCallback
 */
public class JaasPasswordCallbackHandler
    implements JaasAuthenticationCallbackHandler {
    //~ Methods ================================================================

    /**
     * If the callback passed to the 'handle' method is an instance of
     * PasswordCallback, the JaasPasswordCallbackHandler will call,
     * callback.setPassword(authentication.getCredentials().toString()).
     *
     * @param callback
     * @param auth
     *
     * @throws IOException
     * @throws UnsupportedCallbackException
     */
    public void handle(Callback callback, Authentication auth)
        throws IOException, UnsupportedCallbackException {
        if (callback instanceof PasswordCallback) {
            PasswordCallback pc = (PasswordCallback) callback;
            pc.setPassword(auth.getCredentials().toString().toCharArray());
        }
    }
}