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.ber.tlv.Value; 027 import org.apache.directory.shared.asn1.codec.DecoderException; 028 import org.apache.directory.shared.ldap.codec.LdapMessageCodec; 029 import org.apache.directory.shared.ldap.codec.LdapMessageContainer; 030 import org.apache.directory.shared.ldap.codec.controls.CodecControl; 031 import org.apache.directory.shared.ldap.codec.controls.ControlDecoder; 032 import org.apache.directory.shared.ldap.message.control.Control; 033 import org.apache.directory.shared.ldap.util.StringTools; 034 import org.slf4j.Logger; 035 import org.slf4j.LoggerFactory; 036 037 038 /** 039 * The action used to set the value of a control. This is an extension point 040 * where different controls can be plugged in (at least eventually). For now we 041 * hard code controls. 042 * 043 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 044 * @version $Rev$, $Date$, 045 */ 046 public class ControlValueAction extends GrammarAction 047 { 048 /** The logger */ 049 private static final Logger log = LoggerFactory.getLogger( ControlValueAction.class ); 050 051 /** Speedup for logs */ 052 private static final boolean IS_DEBUG = log.isDebugEnabled(); 053 054 055 public void action( IAsn1Container container ) throws DecoderException 056 { 057 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container; 058 TLV tlv = ldapMessageContainer.getCurrentTLV(); 059 LdapMessageCodec message = ldapMessageContainer.getLdapMessage(); 060 061 // Get the current control 062 Control control = message.getCurrentControl(); 063 Value value = tlv.getValue(); 064 065 ControlDecoder decoder = ((CodecControl)control).getDecoder(); 066 067 // Store the value - have to handle the special case of a 0 length value 068 if ( tlv.getLength() == 0 ) 069 { 070 control.setValue( StringTools.EMPTY_BYTES ); 071 } 072 else 073 { 074 if ( decoder == null ) 075 { 076 // No decoder : store the raw value 077 control.setValue( value.getData() ); 078 } 079 else 080 { 081 decoder.decode( value.getData(), control ); 082 } 083 } 084 085 // We can have an END transition 086 ldapMessageContainer.grammarEndAllowed( true ); 087 088 if ( IS_DEBUG ) 089 { 090 log.debug( "Control value : " + StringTools.dumpBytes( ( byte[] ) control.getValue() ) ); 091 } 092 } 093 }