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.AttributeValueAssertion; 028 import org.apache.directory.shared.ldap.codec.LdapMessageContainer; 029 import org.apache.directory.shared.ldap.codec.search.AttributeValueAssertionFilter; 030 import org.apache.directory.shared.ldap.codec.search.SearchRequestCodec; 031 import org.apache.directory.shared.ldap.entry.BinaryValue; 032 import org.apache.directory.shared.ldap.entry.StringValue; 033 import org.apache.directory.shared.ldap.entry.Value; 034 import org.apache.directory.shared.ldap.util.StringTools; 035 import org.slf4j.Logger; 036 import org.slf4j.LoggerFactory; 037 038 039 /** 040 * The action used to initialize the Assertion Value filter 041 * 042 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 043 * @version $Rev$, $Date$, 044 */ 045 public class InitAssertionValueFilterAction extends GrammarAction 046 { 047 /** The logger */ 048 private static final Logger log = LoggerFactory.getLogger( InitAssertionValueFilterAction.class ); 049 050 /** Speedup for logs */ 051 private static final boolean IS_DEBUG = log.isDebugEnabled(); 052 053 public InitAssertionValueFilterAction() 054 { 055 super( "Initialize Assertion Value filter" ); 056 } 057 058 /** 059 * The initialization action 060 */ 061 public void action( IAsn1Container container ) throws DecoderException 062 { 063 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container; 064 SearchRequestCodec searchRequest = ldapMessageContainer.getSearchRequest(); 065 066 TLV tlv = ldapMessageContainer.getCurrentTLV(); 067 068 // The value can be null. 069 Value<?> assertionValue = null; 070 071 if ( tlv.getLength() != 0 ) 072 { 073 assertionValue = new BinaryValue( tlv.getValue().getData() ); 074 } 075 else 076 { 077 assertionValue = new BinaryValue( StringTools.EMPTY_BYTES ); 078 } 079 080 AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter ) searchRequest 081 .getTerminalFilter(); 082 AttributeValueAssertion assertion = terminalFilter.getAssertion(); 083 084 if ( ldapMessageContainer.isBinary( assertion.getAttributeDesc() ) ) 085 { 086 if ( tlv.getLength() != 0 ) 087 { 088 assertionValue = new BinaryValue( tlv.getValue().getData() ); 089 } 090 else 091 { 092 assertionValue = new BinaryValue( StringTools.EMPTY_BYTES ); 093 } 094 095 assertion.setAssertionValue( assertionValue ); 096 } 097 else 098 { 099 if ( tlv.getLength() != 0 ) 100 { 101 assertionValue = new StringValue( StringTools.utf8ToString( tlv.getValue().getData() ) ); 102 } 103 else 104 { 105 assertionValue = new StringValue( "" ); 106 } 107 108 assertion.setAssertionValue(assertionValue ); 109 } 110 111 // We now have to get back to the nearest filter which is 112 // not terminal. 113 searchRequest.unstackFilters( container ); 114 115 if ( IS_DEBUG ) 116 { 117 log.debug( "Initialize Assertion Value filter" ); 118 } 119 } 120 }