/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 *
 */
package org.apache.directory.server.ldap.handlers.sasl.plain;


import javax.security.sasl.SaslServer;

import org.apache.directory.api.ldap.model.message.BindRequest;
import org.apache.directory.server.core.api.CoreSession;
import org.apache.directory.server.ldap.LdapSession;
import org.apache.directory.server.ldap.handlers.sasl.AbstractMechanismHandler;
import org.apache.directory.server.ldap.handlers.sasl.SaslConstants;


/**
 * A handler for the PLAIN Sasl mechanism. 
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
public class PlainMechanismHandler extends AbstractMechanismHandler
{

    /**
     * {@inheritDoc}
     */
    public SaslServer handleMechanism( LdapSession ldapSession, BindRequest bindRequest ) throws Exception
    {
        SaslServer ss = ( SaslServer ) ldapSession.getSaslProperty( SaslConstants.SASL_SERVER );

        if ( ss == null )
        {
            CoreSession adminSession = ldapSession.getLdapServer().getDirectoryService().getAdminSession();

            ss = new PlainSaslServer( ldapSession, adminSession, bindRequest );
            ldapSession.putSaslProperty( SaslConstants.SASL_SERVER, ss );
        }

        return ss;
    }


    /**
     * {@inheritDoc}
     */
    public void init( LdapSession ldapSession )
    {
        // Do nothing
    }


    /**
     * Remove the SaslServer and Mechanism property.
     * 
     * @param ldapSession the Ldapsession instance
     */
    public void cleanup( LdapSession ldapSession )
    {
        ldapSession.clearSaslProperties();
    }
}