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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
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 * GPL Classpath Exception:
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 * 
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 */
package org.glassfish.common.util.admin;

import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import org.jvnet.hk2.annotations.Contract;

/**
 * Prescribes behavior of authentication callbacks which modules can implement
 * to provide callback behavior without the authentication logic needing to 
 * know about specific implementations ahead of time.
 * 
 * @author tjquinn
 */
@Contract
public interface AdminAuthCallback extends Callback {
    /**
     * Prescribes behavior of callbacks that use request-time data in making
     * their decisions.
     * 
     * Token-based authentication, for example, uses a token conveyed with the
     * request as a stand-in for username/password-based authentication.  To
     * keep inter-module dependencies simpler an implementation will probably
     * check the type of the data and then cast it if appropriate.
     */
    public interface RequestAccepter extends AdminAuthCallback {
        public void setRequest(Object data);
    }
    
    public interface Validator extends AdminAuthCallback {
        public boolean isValid();
    }
    
    public interface Authenticator extends AdminAuthCallback {
        public Subject getSubject();
    }
}