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 */ 020package org.apache.directory.shared.kerberos.codec.typedData; 021 022 023import org.apache.directory.api.asn1.actions.CheckNotNullLength; 024import org.apache.directory.api.asn1.ber.grammar.AbstractGrammar; 025import org.apache.directory.api.asn1.ber.grammar.Grammar; 026import org.apache.directory.api.asn1.ber.grammar.GrammarTransition; 027import org.apache.directory.api.asn1.ber.tlv.UniversalTag; 028import org.apache.directory.shared.kerberos.KerberosConstants; 029import org.apache.directory.shared.kerberos.codec.typedData.actions.StoreDataValue; 030import org.apache.directory.shared.kerberos.codec.typedData.actions.StoreTdType; 031import org.apache.directory.shared.kerberos.codec.typedData.actions.TypedDataInit; 032import org.slf4j.Logger; 033import org.slf4j.LoggerFactory; 034 035 036/** 037 * This class implements the TypedData structure. All the actions are declared 038 * in this class. As it is a singleton, these declaration are only done once. If 039 * an action is to be added or modified, this is where the work is to be done ! 040 * 041 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 042 */ 043public final class TypedDataGrammar extends AbstractGrammar<TypedDataContainer> 044{ 045 /** The logger */ 046 static final Logger LOG = LoggerFactory.getLogger( TypedDataGrammar.class ); 047 048 /** A speedup for logger */ 049 static final boolean IS_DEBUG = LOG.isDebugEnabled(); 050 051 /** The instance of grammar. TypedDataGrammar is a singleton */ 052 private static Grammar<TypedDataContainer> instance = new TypedDataGrammar(); 053 054 055 /** 056 * Creates a new TypedDataGrammar object. 057 */ 058 @SuppressWarnings("unchecked") 059 private TypedDataGrammar() 060 { 061 setName( TypedDataGrammar.class.getName() ); 062 063 // Create the transitions table 064 super.transitions = new GrammarTransition[TypedDataStatesEnum.LAST_TYPED_DATA_STATE.ordinal()][256]; 065 066 // ============================================================================================ 067 // TypedData 068 // ============================================================================================ 069 // -------------------------------------------------------------------------------------------- 070 // Transition from TypedData init to TypedData SEQ OF 071 // -------------------------------------------------------------------------------------------- 072 // TypedData ::= SEQUENCE OF 073 super.transitions[TypedDataStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 074 new GrammarTransition<TypedDataContainer>( 075 TypedDataStatesEnum.START_STATE, 076 TypedDataStatesEnum.TYPED_DATA_SEQ_SEQ_STATE, 077 UniversalTag.SEQUENCE, 078 new TypedDataInit() ); 079 080 // -------------------------------------------------------------------------------------------- 081 // Transition from TypedData SEQ OF to SEQ 082 // -------------------------------------------------------------------------------------------- 083 // TypedData ::= SEQUENCE OF SEQUENCE { 084 super.transitions[TypedDataStatesEnum.TYPED_DATA_SEQ_SEQ_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 085 new GrammarTransition<TypedDataContainer>( 086 TypedDataStatesEnum.TYPED_DATA_SEQ_SEQ_STATE, 087 TypedDataStatesEnum.TYPED_DATA_SEQ_STATE, 088 UniversalTag.SEQUENCE, 089 new CheckNotNullLength<TypedDataContainer>() ); 090 091 // -------------------------------------------------------------------------------------------- 092 // Transition from TypedData SEQ OF to tdType tag 093 // -------------------------------------------------------------------------------------------- 094 // TypedData ::= SEQUENCE OF SEQUENCE { 095 // data-type [0] 096 super.transitions[TypedDataStatesEnum.TYPED_DATA_SEQ_STATE.ordinal()][KerberosConstants.TYPED_DATA_TDTYPE_TAG] = 097 new GrammarTransition<TypedDataContainer>( 098 TypedDataStatesEnum.TYPED_DATA_SEQ_STATE, 099 TypedDataStatesEnum.TYPED_DATA_TDTYPE_TAG_STATE, 100 KerberosConstants.TYPED_DATA_TDTYPE_TAG, 101 new CheckNotNullLength<TypedDataContainer>() ); 102 103 // -------------------------------------------------------------------------------------------- 104 // Transition from adtype tag to tdtype value 105 // -------------------------------------------------------------------------------------------- 106 // TypedData ::= SEQUENCE OF SEQUENCE { 107 // data-type [0] Int32, 108 super.transitions[TypedDataStatesEnum.TYPED_DATA_TDTYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = 109 new GrammarTransition<TypedDataContainer>( 110 TypedDataStatesEnum.TYPED_DATA_TDTYPE_TAG_STATE, 111 TypedDataStatesEnum.TYPED_DATA_TDTYPE_STATE, 112 UniversalTag.INTEGER, 113 new StoreTdType() ); 114 115 // -------------------------------------------------------------------------------------------- 116 // Transition from ad-type value to ad-data tag 117 // -------------------------------------------------------------------------------------------- 118 // TypedData ::= SEQUENCE OF SEQUENCE { 119 // ... 120 // data-value [1] 121 super.transitions[TypedDataStatesEnum.TYPED_DATA_TDTYPE_STATE.ordinal()][KerberosConstants.TYPED_DATA_TDDATA_TAG] = 122 new GrammarTransition<TypedDataContainer>( 123 TypedDataStatesEnum.TYPED_DATA_TDTYPE_STATE, 124 TypedDataStatesEnum.TYPED_DATA_TDDATA_TAG_STATE, 125 KerberosConstants.TYPED_DATA_TDDATA_TAG, 126 new CheckNotNullLength<TypedDataContainer>() ); 127 128 // -------------------------------------------------------------------------------------------- 129 // Transition from ad-data tag to ad-data value 130 // -------------------------------------------------------------------------------------------- 131 // TypedData ::= SEQUENCE OF SEQUENCE { 132 // ... 133 // data-value [1] (OCTET STRING) 134 super.transitions[TypedDataStatesEnum.TYPED_DATA_TDDATA_TAG_STATE.ordinal()][UniversalTag.OCTET_STRING 135 .getValue()] = 136 new GrammarTransition<TypedDataContainer>( 137 TypedDataStatesEnum.TYPED_DATA_TDDATA_TAG_STATE, 138 TypedDataStatesEnum.TYPED_DATA_TDDATA_STATE, 139 UniversalTag.OCTET_STRING, 140 new StoreDataValue() ); 141 142 // -------------------------------------------------------------------------------------------- 143 // Transition from ad-data value to SEQUENCE 144 // -------------------------------------------------------------------------------------------- 145 // TypedData ::= SEQUENCE { 146 // ... 147 // data-value [1] (OCTET STRING) 148 super.transitions[TypedDataStatesEnum.TYPED_DATA_TDDATA_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 149 new GrammarTransition<TypedDataContainer>( 150 TypedDataStatesEnum.TYPED_DATA_TDDATA_STATE, 151 TypedDataStatesEnum.TYPED_DATA_SEQ_STATE, 152 UniversalTag.SEQUENCE, 153 new CheckNotNullLength<TypedDataContainer>() ); 154 } 155 156 157 // ~ Methods 158 // ------------------------------------------------------------------------------------ 159 160 /** 161 * Get the instance of this grammar 162 * 163 * @return An instance on the TypedData Grammar 164 */ 165 public static Grammar<TypedDataContainer> getInstance() 166 { 167 return instance; 168 } 169}