alfresco-community-repo/source/java/org/alfresco/repo/security/authentication/AuthenticatedAuthenticationPassthroughProvider.java

/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.repo.security.authentication;

import net.sf.acegisecurity.Authentication;
import net.sf.acegisecurity.AuthenticationException;
import net.sf.acegisecurity.providers.AuthenticationProvider;

public class AuthenticatedAuthenticationPassthroughProvider implements AuthenticationProvider
{

    public AuthenticatedAuthenticationPassthroughProvider()
    {
        super();
    }

    public Authentication authenticate(Authentication authentication) throws AuthenticationException
    {
        if (!supports(authentication.getClass())) {
            return null;
        }
        if(authentication.isAuthenticated())
        {
            return authentication;
        }
        else
        {
            return null;
        }
    }

    public boolean supports(Class authentication)
    {
        return (Authentication.class.isAssignableFrom(authentication));
    }

}