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.adAndOr; 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.adAndOr.actions.AdAndOrInit; 030import org.apache.directory.shared.kerberos.codec.adAndOr.actions.StoreConditionCount; 031import org.apache.directory.shared.kerberos.codec.adAndOr.actions.StoreElements; 032import org.slf4j.Logger; 033import org.slf4j.LoggerFactory; 034 035 036/** 037 * This class implements the AdAndOr 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 AdAndOrGrammar extends AbstractGrammar<AdAndOrContainer> 044{ 045 /** The logger */ 046 static final Logger LOG = LoggerFactory.getLogger( AdAndOrGrammar.class ); 047 048 /** A speedup for logger */ 049 static final boolean IS_DEBUG = LOG.isDebugEnabled(); 050 051 /** The instance of grammar. AdAndOrGrammar is a singleton */ 052 private static Grammar<AdAndOrContainer> instance = new AdAndOrGrammar(); 053 054 055 /** 056 * Creates a new AdAndOrGrammar object. 057 */ 058 @SuppressWarnings("unchecked") 059 private AdAndOrGrammar() 060 { 061 setName( AdAndOrGrammar.class.getName() ); 062 063 // Create the transitions table 064 super.transitions = new GrammarTransition[AdAndOrStatesEnum.LAST_AD_AND_OR_STATE.ordinal()][256]; 065 066 // ============================================================================================ 067 // AdAndOr 068 // ============================================================================================ 069 // -------------------------------------------------------------------------------------------- 070 // Transition from AdAndOr init to AdAndOr SEQ 071 // -------------------------------------------------------------------------------------------- 072 // AD-AND-OR ::= SEQUENCE { 073 super.transitions[AdAndOrStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 074 new GrammarTransition<AdAndOrContainer>( 075 AdAndOrStatesEnum.START_STATE, 076 AdAndOrStatesEnum.AD_AND_OR_STATE, 077 UniversalTag.SEQUENCE, 078 new AdAndOrInit() ); 079 080 // -------------------------------------------------------------------------------------------- 081 // Transition from AdAndOr SEQ to condition-count tag 082 // -------------------------------------------------------------------------------------------- 083 // AD-AND-OR ::= SEQUENCE { 084 // condition-count [0] 085 super.transitions[AdAndOrStatesEnum.AD_AND_OR_STATE.ordinal()][KerberosConstants.AD_AND_OR_CONDITION_COUNT_TAG] = 086 new GrammarTransition<AdAndOrContainer>( 087 AdAndOrStatesEnum.AD_AND_OR_STATE, 088 AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_TAG_STATE, 089 KerberosConstants.AD_AND_OR_CONDITION_COUNT_TAG, 090 new CheckNotNullLength<AdAndOrContainer>() ); 091 092 // -------------------------------------------------------------------------------------------- 093 // Transition from condition-count tag to condition-count value 094 // -------------------------------------------------------------------------------------------- 095 // AD-AND-OR ::= SEQUENCE { 096 // condition-count [0] Int32, 097 super.transitions[AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_TAG_STATE.ordinal()][UniversalTag.INTEGER 098 .getValue()] = 099 new GrammarTransition<AdAndOrContainer>( 100 AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_TAG_STATE, 101 AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_STATE, 102 UniversalTag.INTEGER, 103 new StoreConditionCount() ); 104 105 // -------------------------------------------------------------------------------------------- 106 // Transition from condition-countvalue to elements 107 // -------------------------------------------------------------------------------------------- 108 // AD-AND-OR ::= SEQUENCE { 109 // ... 110 // elements [1] AuthorizationData 111 // } 112 super.transitions[AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_STATE.ordinal()][KerberosConstants.AD_AND_OR_ELEMENTS_TAG] = 113 new GrammarTransition<AdAndOrContainer>( 114 AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_STATE, 115 AdAndOrStatesEnum.AD_AND_OR_ELEMENTS_TAG_STATE, 116 KerberosConstants.AD_AND_OR_ELEMENTS_TAG, 117 new StoreElements() ); 118 } 119 120 121 /** 122 * Get the instance of this grammar 123 * 124 * @return An instance on the AD-AND-OR Grammar 125 */ 126 public static Grammar<AdAndOrContainer> getInstance() 127 { 128 return instance; 129 } 130}