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/* Copyright 2004, 2005, 2006 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.UnsupportedCallbackException;


/**
 * The JaasAuthenticationCallbackHandler is similar to the
 * javax.security.auth.callback.CallbackHandler interface in that it defines a
 * handle method. The JaasAuthenticationCallbackHandler is only asked to
 * handle one Callback instance at at time rather than an array of all
 * Callbacks, as the javax... CallbackHandler defines.
 * 
 * 

* Before a JaasAuthenticationCallbackHandler is asked to 'handle' any * callbacks, it is first passed the Authentication object that the login * attempt is for. NOTE: The Authentication object has not been * 'authenticated' yet. *

* * @author Ray Krueger * @version $Id: JaasAuthenticationCallbackHandler.java 1496 2006-05-23 13:38:33Z benalex $ * * @see JaasNameCallbackHandler * @see JaasPasswordCallbackHandler * @see Callback * @see CallbackHandler */ public interface JaasAuthenticationCallbackHandler { //~ Methods ======================================================================================================== /** * Handle the Callback. The * handle method will be called for every callback instance sent from the LoginContext. Meaning that The handle * method may be called multiple times for a given JaasAuthenticationCallbackHandler. * * @param callback * @param auth The Authentication object currently being authenticated. * * @throws IOException * @throws UnsupportedCallbackException */ void handle(Callback callback, Authentication auth) throws IOException, UnsupportedCallbackException; }




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