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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013 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.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
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 * enclosed by brackets [] replaced by your own identifying information:
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 */
package org.glassfish.security.services.impl;

import java.security.AccessController;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.ServiceLocator;

import org.glassfish.security.services.common.PrivilegedLookup;
import org.glassfish.security.services.common.Secure;
import org.glassfish.security.services.common.StateManager;
import org.glassfish.security.services.common.SecurityScope;

import org.glassfish.security.services.api.authentication.AuthenticationService;

import com.sun.enterprise.config.serverbeans.Domain;

/**
 * The factory of AuthenticationService instances used by the SecurityScopeContext.
 */
@Singleton
@Secure(accessPermissionName = "security/service/authentication")
public class AuthenticationServiceFactory extends ServiceFactory implements Factory {
    
    @Inject
    private StateManager manager;

    @Inject
    private ServiceLocator serviceLocator;

    @SecurityScope
    public AuthenticationService provide() {
        String currentState = manager.getCurrent();

        // Get Service Instance
        AuthenticationService atnService = AccessController.doPrivileged( 
                new PrivilegedLookup(
                        serviceLocator, AuthenticationService.class));

        // Get Service Configuration
        org.glassfish.security.services.config.AuthenticationService atnConfiguration =
            serviceLocator.getService(org.glassfish.security.services.config.AuthenticationService.class,currentState);

        // Initialize Service
        atnService.initialize(atnConfiguration);

        return atnService;
    }

    @Override
    public void dispose(AuthenticationService instance) {
    }

    /**
     * Helper function to obtain the Authentication Service configuration from the Domain.
     */
    public static org.glassfish.security.services.config.AuthenticationService getAuthenticationServiceConfiguration(Domain domain) {
		org.glassfish.security.services.config.AuthenticationService atnConfiguration =
        	ServiceFactory.getSecurityServiceConfiguration(
        			domain, org.glassfish.security.services.config.AuthenticationService.class);
        return atnConfiguration;
	}
}