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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 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.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
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 * file that accompanied this code.
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 */

package com.sun.enterprise.security;

import java.security.Principal;
import java.security.PrivilegedExceptionAction;
import java.lang.reflect.Method;

import javax.security.auth.Subject;
import org.glassfish.api.invocation.ComponentInvocation;

/**
 * This interface is used by the Container to manage access to EJBs.
 * The container has a reference to an implementation of this 
 * interface.
 * @author Harish Prabandham
 */
public interface SecurityManager {

    /**
     * @param The Invocation object containing the details of the invocation.
     * @return true if the client is allowed to invoke the EJB, false otherwise.
     */
    public boolean authorize(ComponentInvocation inv);

    /**
     * @return The Principal of the client who made the current 
     * invocation.
     */
    public Principal getCallerPrincipal();

    /**
     * @return A boolean true/false depending on whether or not the caller 
     * has the specified role.
     * @param The EJB developer specified "logical role".
     */
    public boolean isCallerInRole(String  role);


    /** This sets up the security context - if not set
     * and does run-as related login if required
     * @param ComponentInvocation
     */
    public void preInvoke (ComponentInvocation inv);

    /**
     * This method is used by the  Invocation Manager to remove
     * the run-as identity information that was set up using the 
     * preInvoke
     * @param ComponentInvocation
     */
    public void postInvoke (ComponentInvocation inv);

    /**
     * Call this method to clean up all the bookeeping
     * data-structures in the SM.
     */
    public void destroy();

    /**
     * This will return the subject associated with the current
     * call. If the run as subject is in effect. It will return that
     * subject. This is done to support the JACC specification which says
     * if the runas principal is in effect, that principal should be used
     * for making a component call.
     * @return Subject the current subject. Null if this is not the
     * runas case
     */
    public Subject getCurrentSubject();

    /**
     * Purge ThreadLocals held by javax.security.jacc.PolicyContext
     */
    public void resetPolicyContext();
    
    
    /* This method is used by SecurityUtil runMethod to run the
     * action as the subject encapsulated in the cuurent
     * SecurityContext.
     */
      
    public Object doAsPrivileged(PrivilegedExceptionAction pea) 
 	throws Throwable;

    public Object invoke(Method beanClassMethod, boolean isLocal, Object o, Object[] oa)
            throws Throwable;
     
}