edu.vt.middleware.ldap.jaas.SpringAuthenticatorFactory.java Source code

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Here is the source code for edu.vt.middleware.ldap.jaas.SpringAuthenticatorFactory.java

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/*
  $Id$
    
  Copyright (C) 2003-2010 Virginia Tech.
  All rights reserved.
    
  SEE LICENSE FOR MORE INFORMATION
    
  Author:  Middleware Services
  Email:   middleware@vt.edu
  Version: $Revision$
  Updated: $Date$
*/
package edu.vt.middleware.ldap.jaas;

import java.util.Map;
import edu.vt.middleware.ldap.auth.AuthenticationHandler;
import edu.vt.middleware.ldap.auth.AuthenticationRequest;
import edu.vt.middleware.ldap.auth.Authenticator;
import edu.vt.middleware.ldap.pool.PooledConnectionFactoryManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * Provides an authentication factory implementation that uses a spring context.
 *
 * @author  Middleware Services
 * @version  $Revision$ $Date$
 */
public class SpringAuthenticatorFactory implements AuthenticatorFactory {

    /** Application context. */
    private static ClassPathXmlApplicationContext context;

    /** Initialize the context. */
    static {
        try {
            context = new ClassPathXmlApplicationContext(new String[] { "/spring-jaas-context.xml", });
        } catch (Exception e) {
            final Logger logger = LoggerFactory.getLogger(SpringAuthenticatorFactory.class);
            logger.warn("Could not create spring context", e.getMessage());
        }
    }

    /** {@inheritDoc} */
    @Override
    public Authenticator createAuthenticator(final Map<String, ?> jaasOptions) {
        if (context == null) {
            throw new UnsupportedOperationException("Could not initialize spring context");
        }
        return (Authenticator) context.getBean("authenticator");
    }

    /** {@inheritDoc} */
    @Override
    public AuthenticationRequest createAuthenticationRequest(final Map<String, ?> jaasOptions) {
        if (context == null) {
            throw new UnsupportedOperationException("Could not initialize spring context");
        }
        return (AuthenticationRequest) context.getBean("authenticationRequest");
    }

    /**
     * Closes the authenticator dn resolver if it is a managed dn resolver.
     */
    public static void close() {
        if (context == null) {
            throw new UnsupportedOperationException("Could not initialize spring context");
        }
        final Authenticator a = (Authenticator) context.getBean("authenticator");
        if (a.getDnResolver() instanceof PooledConnectionFactoryManager) {
            final PooledConnectionFactoryManager cfm = (PooledConnectionFactoryManager) a.getDnResolver();
            cfm.getConnectionFactory().getConnectionPool().close();
        }
        final AuthenticationHandler ah = a.getAuthenticationHandler();
        if (ah instanceof PooledConnectionFactoryManager) {
            final PooledConnectionFactoryManager cfm = (PooledConnectionFactoryManager) ah;
            cfm.getConnectionFactory().getConnectionPool().close();
        }
    }
}