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.ldap.codec.LdapMessageCodec;
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
032 import org.slf4j.Logger;
033 import org.slf4j.LoggerFactory;
034
035
036 /**
037 * The action used to init referrals to a LdapTresult
038 *
039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
040 * @version $Rev$, $Date$,
041 */
042 public class InitReferralsAction extends GrammarAction
043 {
044 /** The logger */
045 private static final Logger log = LoggerFactory.getLogger( InitReferralsAction.class );
046
047 /** Speedup for logs */
048 private static final boolean IS_DEBUG = log.isDebugEnabled();
049
050 public InitReferralsAction()
051 {
052 super( "Init the referrals list" );
053 }
054
055 /**
056 * The initialization action
057 */
058 public void action( IAsn1Container container ) throws DecoderException
059 {
060 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
061 LdapMessageCodec ldapMessage = ldapMessageContainer.getLdapMessage();
062 LdapResponseCodec response = ldapMessage.getLdapResponse();
063 LdapResultCodec ldapResult = response.getLdapResult();
064
065 TLV tlv = ldapMessageContainer.getCurrentTLV();
066
067 // If we hae a Referrals sequence, then it should not be empty
068 // sasl credentials
069 if ( tlv.getLength() == 0 )
070 {
071 String msg = "The Referrals must not be null";
072 log.error( msg );
073
074 // This will generate a PROTOCOL_ERROR
075 throw new DecoderException( msg );
076 }
077
078 if ( IS_DEBUG)
079 {
080 log.debug( "Initialising a referrals list" );
081 }
082
083 ldapResult.initReferrals();
084 }
085 }