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; 029 030 import org.slf4j.Logger; 031 import org.slf4j.LoggerFactory; 032 033 034 /** 035 * The action used to initialize a control. 036 * 037 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 038 * @version $Rev$, $Date$, 039 */ 040 public class ControlsInitAction extends GrammarAction 041 { 042 /** The logger */ 043 private static final Logger log = LoggerFactory.getLogger( ControlsInitAction.class ); 044 045 /** Speedup for logs */ 046 private static final boolean IS_DEBUG = log.isDebugEnabled(); 047 048 public ControlsInitAction() 049 { 050 super( "Initialize a control" ); 051 } 052 053 /** 054 * The initialization action 055 */ 056 public void action( IAsn1Container container ) throws DecoderException 057 { 058 059 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container; 060 LdapMessageCodec message = ldapMessageContainer.getLdapMessage(); 061 062 TLV tlv = ldapMessageContainer.getCurrentTLV(); 063 int expectedLength = tlv.getLength(); 064 065 // The Length should be null 066 if ( expectedLength == 0 ) 067 { 068 log.error( "The length of controls must not be null" ); 069 070 // This will generate a PROTOCOL_ERROR 071 throw new DecoderException( "The length of controls must not be null" ); 072 } 073 074 if ( IS_DEBUG ) 075 { 076 log.debug( "A new list of controls has been initialized" ); 077 } 078 079 // We can initialize the controls array 080 message.initControls(); 081 } 082 }