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.paEncTsEnc; 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.paEncTsEnc.actions.PaEncTsEncInit; 030import org.apache.directory.shared.kerberos.codec.paEncTsEnc.actions.StorePaTimestamp; 031import org.apache.directory.shared.kerberos.codec.paEncTsEnc.actions.StorePaUsec; 032import org.slf4j.Logger; 033import org.slf4j.LoggerFactory; 034 035 036/** 037 * This class implements the PaEncTsEnc 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 PaEncTsEncGrammar extends AbstractGrammar<PaEncTsEncContainer> 044{ 045 /** The logger */ 046 static final Logger LOG = LoggerFactory.getLogger( PaEncTsEncGrammar.class ); 047 048 /** A speedup for logger */ 049 static final boolean IS_DEBUG = LOG.isDebugEnabled(); 050 051 /** The instance of grammar. PaEncTsEncGrammar is a singleton */ 052 private static Grammar<PaEncTsEncContainer> instance = new PaEncTsEncGrammar(); 053 054 055 /** 056 * Creates a new PaEncTsEncrGrammar object. 057 */ 058 @SuppressWarnings("unchecked") 059 private PaEncTsEncGrammar() 060 { 061 setName( PaEncTsEncGrammar.class.getName() ); 062 063 // Create the transitions table 064 super.transitions = new GrammarTransition[PaEncTsEncStatesEnum.LAST_PA_ENC_TS_ENC_STATE.ordinal()][256]; 065 066 // ============================================================================================ 067 // PaEncTsEnc 068 // ============================================================================================ 069 // -------------------------------------------------------------------------------------------- 070 // Transition from PaEncTsEnc init to PaEncTsEnc SEQ 071 // -------------------------------------------------------------------------------------------- 072 // PA-ENC-TS-ENC ::= SEQUENCE { 073 super.transitions[PaEncTsEncStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 074 new GrammarTransition<PaEncTsEncContainer>( 075 PaEncTsEncStatesEnum.START_STATE, 076 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_STATE, 077 UniversalTag.SEQUENCE, 078 new PaEncTsEncInit() ); 079 080 // -------------------------------------------------------------------------------------------- 081 // Transition from PaEncTsEnc SEQ to patimestamp tag 082 // -------------------------------------------------------------------------------------------- 083 // PA-ENC-TS-ENC ::= SEQUENCE { 084 // patimestamp [0] 085 super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_ENC_STATE.ordinal()][KerberosConstants.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG] = 086 new GrammarTransition<PaEncTsEncContainer>( 087 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_STATE, 088 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG_STATE, 089 KerberosConstants.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG, 090 new CheckNotNullLength<PaEncTsEncContainer>() ); 091 092 // -------------------------------------------------------------------------------------------- 093 // Transition from patimestamp tag to patimestamp value 094 // -------------------------------------------------------------------------------------------- 095 // PA-ENC-TS-ENC ::= SEQUENCE { 096 // patimestamp [0] KerberosTime -- client's time --, 097 super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG_STATE.ordinal()][UniversalTag.GENERALIZED_TIME 098 .getValue()] = 099 new GrammarTransition<PaEncTsEncContainer>( 100 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG_STATE, 101 PaEncTsEncStatesEnum.PA_ENC_TS_PA_TIMESTAMP_STATE, 102 UniversalTag.GENERALIZED_TIME, 103 new StorePaTimestamp() ); 104 105 // -------------------------------------------------------------------------------------------- 106 // Transition from patimestamp value to pausec tag 107 // -------------------------------------------------------------------------------------------- 108 // PA-ENC-TS-ENC ::= SEQUENCE { 109 // ... 110 // pausec [1] 111 super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_PA_TIMESTAMP_STATE.ordinal()][KerberosConstants.PA_ENC_TS_ENC_PA_USEC_TAG] = 112 new GrammarTransition<PaEncTsEncContainer>( 113 PaEncTsEncStatesEnum.PA_ENC_TS_PA_TIMESTAMP_STATE, 114 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_TAG_STATE, 115 KerberosConstants.PA_ENC_TS_ENC_PA_USEC_TAG, 116 new CheckNotNullLength<PaEncTsEncContainer>() ); 117 118 // -------------------------------------------------------------------------------------------- 119 // Transition from pausec tag to pausec value 120 // -------------------------------------------------------------------------------------------- 121 // PA-ENC-TS-ENC ::= SEQUENCE { 122 // ... 123 // pausec [1] Microseconds OPTIONAL 124 // } 125 super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_TAG_STATE.ordinal()][UniversalTag.INTEGER 126 .getValue()] = 127 new GrammarTransition<PaEncTsEncContainer>( 128 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_TAG_STATE, 129 PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_STATE, 130 UniversalTag.INTEGER, 131 new StorePaUsec() ); 132 } 133 134 135 /** 136 * Get the instance of this grammar 137 * 138 * @return An instance on the PA-ENC-TS-ENC Grammar 139 */ 140 public static Grammar<PaEncTsEncContainer> getInstance() 141 { 142 return instance; 143 } 144}