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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright (c) 2011 Oracle and/or its affiliates. All rights reserved.
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 * 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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package com.sun.enterprise.config.serverbeans;

import java.io.IOException;
import java.security.KeyStoreException;
import org.jvnet.hk2.annotations.Contract;

@Contract()
/**
 * Definition of some utility behavior that needs to be invoked from
 * config classes in admin/config-api but implemented elsewhere (in a module
 * with dependencies that we do not want to add to admin/config-api). 
 * 
 * @author Tim Quinn
 */
public interface SecureAdminHelper {
    
    /**
     * Returns the DN for the given DN or alias value.
     * 
     * @param value the user-specified value
     * @param isAlias whether the value is an alias or the DN itself
     * @return the DN
     */
    public String getDN(String value, boolean isAlias) throws IOException, KeyStoreException;
    
    /**
     * Makes sure that the specified username is an admin user and that the
     * specified password alias exists. Note that implementations of this 
     * method should not make sure that the username and the password pointed
     * to by the alias actually match a valid admin user in the admin realm. That
     * check is done by the normal authorization logic when the username and
     * the actual password are used.
     * 
     * @param username
     * @param passwordAlias 
     * @throws Exception if eiher the username or the password alias is not valid
     */
    public void validateInternalUsernameAndPasswordAlias(String username, String passwordAlias);
    
    /**
     * Reports whether any admin user exists which has an empty password.
     * 
     * @return true if any admin user exists with an empty password; false otherwise
     * @throws Exception 
     */
    public boolean isAnyAdminUserWithoutPassword() throws Exception;
    
    /**
     * An exception indicating a user-correctable error that occurred as
     * a secure admin command executed.
     * 
     * The secure admin commands can detect such errors and report just the
     * exception's message and not the exception as well (which would clutter
     * the report back to the admin client).
     */
    public class SecureAdminCommandException extends RuntimeException {
        
        public SecureAdminCommandException(String message) {
            super(message);
        }
    }
}