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.lastReq; 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.lastReq.actions.LastReqInit; 030import org.apache.directory.shared.kerberos.codec.lastReq.actions.StoreLrType; 031import org.apache.directory.shared.kerberos.codec.lastReq.actions.StoreLrValue; 032import org.slf4j.Logger; 033import org.slf4j.LoggerFactory; 034 035 036/** 037 * This class implements the LastReq 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 LastReqGrammar extends AbstractGrammar<LastReqContainer> 044{ 045 /** The logger */ 046 static final Logger LOG = LoggerFactory.getLogger( LastReqGrammar.class ); 047 048 /** A speedup for logger */ 049 static final boolean IS_DEBUG = LOG.isDebugEnabled(); 050 051 /** The instance of grammar. LastReqGrammar is a singleton */ 052 private static Grammar<LastReqContainer> instance = new LastReqGrammar(); 053 054 055 /** 056 * Creates a new LastReqGrammar object. 057 */ 058 @SuppressWarnings("unchecked") 059 private LastReqGrammar() 060 { 061 setName( LastReqGrammar.class.getName() ); 062 063 // Create the transitions table 064 super.transitions = new GrammarTransition[LastReqStatesEnum.LAST_LAST_REQ_STATE.ordinal()][256]; 065 066 // ============================================================================================ 067 // LastReq 068 // ============================================================================================ 069 // -------------------------------------------------------------------------------------------- 070 // Transition from LastReq init to LastReq SEQ OF 071 // -------------------------------------------------------------------------------------------- 072 // LastReq ::= SEQUENCE OF 073 super.transitions[LastReqStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 074 new GrammarTransition<LastReqContainer>( 075 LastReqStatesEnum.START_STATE, 076 LastReqStatesEnum.LAST_REQ_SEQ_STATE, 077 UniversalTag.SEQUENCE, 078 new LastReqInit() ); 079 080 // -------------------------------------------------------------------------------------------- 081 // Transition from LastReq SEQ OF to LastReq SEQ OF SEQ 082 // -------------------------------------------------------------------------------------------- 083 // LastReq ::= SEQUENCE OF SEQUENCE { 084 super.transitions[LastReqStatesEnum.LAST_REQ_SEQ_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 085 new GrammarTransition<LastReqContainer>( 086 LastReqStatesEnum.LAST_REQ_SEQ_STATE, 087 LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE, 088 UniversalTag.SEQUENCE, 089 new CheckNotNullLength<LastReqContainer>() ); 090 091 // -------------------------------------------------------------------------------------------- 092 // Transition from LastReq SEQ OF SEQ to lr-type tag 093 // -------------------------------------------------------------------------------------------- 094 // LastReq ::= SEQUENCE OF SEQUENCE { 095 // lr-type [0] 096 super.transitions[LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE.ordinal()][KerberosConstants.LAST_REQ_LR_TYPE_TAG] = 097 new GrammarTransition<LastReqContainer>( 098 LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE, 099 LastReqStatesEnum.LAST_REQ_LR_TYPE_TAG_STATE, 100 KerberosConstants.LAST_REQ_LR_TYPE_TAG, 101 new CheckNotNullLength<LastReqContainer>() ); 102 103 // -------------------------------------------------------------------------------------------- 104 // Transition from lr-type tag to lr-type value 105 // -------------------------------------------------------------------------------------------- 106 // LastReq ::= SEQUENCE OF SEQUENCE { 107 // lr-type [0] Int32, 108 super.transitions[LastReqStatesEnum.LAST_REQ_LR_TYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = 109 new GrammarTransition<LastReqContainer>( 110 LastReqStatesEnum.LAST_REQ_LR_TYPE_TAG_STATE, 111 LastReqStatesEnum.LAST_REQ_LR_TYPE_STATE, 112 UniversalTag.INTEGER, 113 new StoreLrType() ); 114 115 // -------------------------------------------------------------------------------------------- 116 // Transition from lr-type value lr-value tag 117 // -------------------------------------------------------------------------------------------- 118 // LastReq ::= SEQUENCE OF SEQUENCE { 119 // ... 120 // lr-value [1] 121 super.transitions[LastReqStatesEnum.LAST_REQ_LR_TYPE_STATE.ordinal()][KerberosConstants.LAST_REQ_LR_VALUE_TAG] = 122 new GrammarTransition<LastReqContainer>( 123 LastReqStatesEnum.LAST_REQ_LR_TYPE_STATE, 124 LastReqStatesEnum.LAST_REQ_LR_VALUE_TAG_STATE, 125 KerberosConstants.LAST_REQ_LR_VALUE_TAG, 126 new CheckNotNullLength<LastReqContainer>() ); 127 128 // -------------------------------------------------------------------------------------------- 129 // Transition from lr-value tag to lr-value value 130 // -------------------------------------------------------------------------------------------- 131 // LastReq ::= SEQUENCE OF SEQUENCE { 132 // ... 133 // lr-value [1] KerberosTime 134 super.transitions[LastReqStatesEnum.LAST_REQ_LR_VALUE_TAG_STATE.ordinal()][UniversalTag.GENERALIZED_TIME 135 .getValue()] = 136 new GrammarTransition<LastReqContainer>( 137 LastReqStatesEnum.LAST_REQ_LR_VALUE_TAG_STATE, 138 LastReqStatesEnum.LAST_REQ_LR_VALUE_STATE, 139 UniversalTag.GENERALIZED_TIME, 140 new StoreLrValue() ); 141 142 // -------------------------------------------------------------------------------------------- 143 // Transition from lr-value value to SEQ OF SEQ 144 // -------------------------------------------------------------------------------------------- 145 // LastReq ::= SEQUENCE OF SEQUENCE { 146 // ... 147 // lr-value [1] KerberosTime 148 // } 149 super.transitions[LastReqStatesEnum.LAST_REQ_LR_VALUE_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 150 new GrammarTransition<LastReqContainer>( 151 LastReqStatesEnum.LAST_REQ_LR_VALUE_STATE, 152 LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE, 153 UniversalTag.SEQUENCE, 154 new CheckNotNullLength<LastReqContainer>() ); 155 } 156 157 158 /** 159 * Get the instance of this grammar 160 * 161 * @return An instance on the LastReq Grammar 162 */ 163 public static Grammar<LastReqContainer> getInstance() 164 { 165 return instance; 166 } 167}