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     */
020    package org.apache.directory.shared.ldap.codec.actions;
021    
022    
023    import org.apache.directory.shared.asn1.ber.IAsn1Container;
024    import org.apache.directory.shared.asn1.ber.grammar.GrammarAction;
025    import org.apache.directory.shared.asn1.ber.tlv.TLV;
026    import org.apache.directory.shared.asn1.codec.DecoderException;
027    import org.apache.directory.shared.i18n.I18n;
028    import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
029    import org.apache.directory.shared.ldap.codec.LdapResponseCodec;
030    import org.apache.directory.shared.ldap.codec.LdapResultCodec;
031    import org.slf4j.Logger;
032    import org.slf4j.LoggerFactory;
033    
034    
035    /**
036     * The action used to init referrals to a LdapTresult
037     * 
038     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
039     * @version $Rev$, $Date$, 
040     */
041    public class InitReferralsAction extends GrammarAction
042    {
043        /** The logger */
044        private static final Logger log = LoggerFactory.getLogger( InitReferralsAction.class );
045    
046        /** Speedup for logs */
047        private static final boolean IS_DEBUG = log.isDebugEnabled();
048    
049        public InitReferralsAction()
050        {
051            super( "Init the referrals list" );
052        }
053    
054        /**
055         * The initialization action
056         */
057        public void action( IAsn1Container container ) throws DecoderException
058        {
059            LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
060            LdapResponseCodec response = ldapMessageContainer.getLdapResponse();
061            LdapResultCodec ldapResult = response.getLdapResult();
062            
063            TLV tlv = ldapMessageContainer.getCurrentTLV();
064    
065            // If we hae a Referrals sequence, then it should not be empty
066            // sasl credentials
067            if ( tlv.getLength() == 0 )
068            {
069                String msg = I18n.err( I18n.ERR_04011 );
070                log.error( msg );
071             
072                // This will generate a PROTOCOL_ERROR
073                throw new DecoderException( msg );
074            }
075    
076            if ( IS_DEBUG)
077            {
078                log.debug( "Initialising a referrals list" );
079            }
080            
081            ldapResult.initReferrals();
082        }
083    }