001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.directory.api.ldap.codec.actions.bindRequest;
021
022
023import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
024import org.apache.directory.api.asn1.ber.tlv.TLV;
025import org.apache.directory.api.ldap.codec.api.LdapMessageContainer;
026import org.apache.directory.api.ldap.codec.decorators.BindRequestDecorator;
027import org.apache.directory.api.ldap.model.message.BindRequest;
028import org.apache.directory.api.util.Strings;
029import org.slf4j.Logger;
030import org.slf4j.LoggerFactory;
031
032
033/**
034 * The action used to store the BindRequest version MessageID.
035 * <pre>
036 * SaslCredentials ::= SEQUENCE {
037 *     mechanism   LDAPSTRING,
038 *     ...
039 * </pre>
040 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
041 */
042public class StoreSaslMechanism extends GrammarAction<LdapMessageContainer<BindRequestDecorator>>
043{
044    /** The logger */
045    private static final Logger LOG = LoggerFactory.getLogger( StoreSaslMechanism.class );
046
047    /** Speedup for logs */
048    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
049
050
051    /**
052     * Instantiates a new action.
053     */
054    public StoreSaslMechanism()
055    {
056        super( "Store SASL mechanism" );
057    }
058
059
060    /**
061     * {@inheritDoc}
062     */
063    public void action( LdapMessageContainer<BindRequestDecorator> container )
064    {
065        BindRequest bindRequestMessage = container.getMessage();
066        TLV tlv = container.getCurrentTLV();
067
068        // We have to handle the special case of a 0 length
069        // mechanism
070        if ( tlv.getLength() == 0 )
071        {
072            bindRequestMessage.setSaslMechanism( "" );
073        }
074        else
075        {
076            bindRequestMessage.setSaslMechanism( Strings.utf8ToString( tlv.getValue().getData() ) );
077        }
078
079        // We can have an END transition
080        container.setGrammarEndAllowed( true );
081
082        if ( IS_DEBUG )
083        {
084            LOG.debug( "The mechanism is : {}", bindRequestMessage.getSaslMechanism() );
085        }
086    }
087}