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.krbCred; 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.krbCred.actions.CheckMsgType; 030import org.apache.directory.shared.kerberos.codec.krbCred.actions.KrbCredInit; 031import org.apache.directory.shared.kerberos.codec.krbCred.actions.StoreEncPart; 032import org.apache.directory.shared.kerberos.codec.krbCred.actions.StorePvno; 033import org.apache.directory.shared.kerberos.codec.krbCred.actions.StoreTickets; 034import org.slf4j.Logger; 035import org.slf4j.LoggerFactory; 036 037 038/** 039 * This class implements the KrbCred structure. All the actions are declared 040 * in this class. As it is a singleton, these declaration are only done once. If 041 * an action is to be added or modified, this is where the work is to be done ! 042 * 043 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 044 */ 045public final class KrbCredGrammar extends AbstractGrammar<KrbCredContainer> 046{ 047 /** The logger */ 048 static final Logger LOG = LoggerFactory.getLogger( KrbCredGrammar.class ); 049 050 /** A speedup for logger */ 051 static final boolean IS_DEBUG = LOG.isDebugEnabled(); 052 053 /** The instance of grammar. KrbCredCredGrammar is a singleton */ 054 private static Grammar<KrbCredContainer> instance = new KrbCredGrammar(); 055 056 057 /** 058 * Creates a new KrbCredGrammar object. 059 */ 060 @SuppressWarnings("unchecked") 061 private KrbCredGrammar() 062 { 063 setName( KrbCredGrammar.class.getName() ); 064 065 // Create the transitions table 066 super.transitions = new GrammarTransition[KrbCredStatesEnum.LAST_KRB_CRED_STATE.ordinal()][256]; 067 068 // ============================================================================================ 069 // KrbCred 070 // ============================================================================================ 071 072 super.transitions[KrbCredStatesEnum.START_STATE.ordinal()][KerberosConstants.KRB_CRED_TAG] = 073 new GrammarTransition<KrbCredContainer>( 074 KrbCredStatesEnum.START_STATE, KrbCredStatesEnum.KRB_CRED_TAG_STATE, KerberosConstants.KRB_CRED_TAG, 075 new KrbCredInit() ); 076 077 super.transitions[KrbCredStatesEnum.KRB_CRED_TAG_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 078 new GrammarTransition<KrbCredContainer>( 079 KrbCredStatesEnum.KRB_CRED_TAG_STATE, 080 KrbCredStatesEnum.KRB_CRED_SEQ_TAG_STATE, 081 UniversalTag.SEQUENCE, 082 new CheckNotNullLength<KrbCredContainer>() ); 083 084 super.transitions[KrbCredStatesEnum.KRB_CRED_SEQ_TAG_STATE.ordinal()][KerberosConstants.KRB_CRED_PVNO_TAG] = 085 new GrammarTransition<KrbCredContainer>( 086 KrbCredStatesEnum.KRB_CRED_SEQ_TAG_STATE, 087 KrbCredStatesEnum.KRB_CRED_PVNO_TAG_STATE, 088 KerberosConstants.KRB_CRED_PVNO_TAG, 089 new CheckNotNullLength<KrbCredContainer>() ); 090 091 super.transitions[KrbCredStatesEnum.KRB_CRED_PVNO_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = 092 new GrammarTransition<KrbCredContainer>( 093 KrbCredStatesEnum.KRB_CRED_PVNO_TAG_STATE, 094 KrbCredStatesEnum.KRB_CRED_PVNO_STATE, 095 UniversalTag.INTEGER, 096 new StorePvno() ); 097 098 super.transitions[KrbCredStatesEnum.KRB_CRED_PVNO_STATE.ordinal()][KerberosConstants.KRB_CRED_MSGTYPE_TAG] = 099 new GrammarTransition<KrbCredContainer>( 100 KrbCredStatesEnum.KRB_CRED_PVNO_STATE, 101 KrbCredStatesEnum.KRB_CRED_MSGTYPE_TAG_STATE, 102 KerberosConstants.KRB_CRED_MSGTYPE_TAG, 103 new CheckNotNullLength<KrbCredContainer>() ); 104 105 super.transitions[KrbCredStatesEnum.KRB_CRED_MSGTYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = 106 new GrammarTransition<KrbCredContainer>( 107 KrbCredStatesEnum.KRB_CRED_MSGTYPE_TAG_STATE, 108 KrbCredStatesEnum.KRB_CRED_MSGTYPE_STATE, 109 UniversalTag.INTEGER, 110 new CheckMsgType() ); 111 112 super.transitions[KrbCredStatesEnum.KRB_CRED_MSGTYPE_STATE.ordinal()][KerberosConstants.KRB_CRED_TICKETS_TAG] = 113 new GrammarTransition<KrbCredContainer>( 114 KrbCredStatesEnum.KRB_CRED_MSGTYPE_STATE, 115 KrbCredStatesEnum.KRB_CRED_TICKETS_TAG_STATE, 116 KerberosConstants.KRB_CRED_TICKETS_TAG, 117 new CheckNotNullLength<KrbCredContainer>() ); 118 119 super.transitions[KrbCredStatesEnum.KRB_CRED_TICKETS_TAG_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 120 new GrammarTransition<KrbCredContainer>( 121 KrbCredStatesEnum.KRB_CRED_TICKETS_TAG_STATE, 122 KrbCredStatesEnum.KRB_CRED_TICKETS_STATE, 123 UniversalTag.SEQUENCE, 124 new CheckNotNullLength<KrbCredContainer>() ); 125 126 super.transitions[KrbCredStatesEnum.KRB_CRED_TICKETS_STATE.ordinal()][KerberosConstants.TICKET_TAG] = 127 new GrammarTransition<KrbCredContainer>( 128 KrbCredStatesEnum.KRB_CRED_TICKETS_STATE, 129 KrbCredStatesEnum.KRB_CRED_TICKETS_STATE, 130 KerberosConstants.TICKET_TAG, 131 new StoreTickets() ); 132 133 super.transitions[KrbCredStatesEnum.KRB_CRED_TICKETS_STATE.ordinal()][KerberosConstants.KRB_CRED_ENCPART_TAG] = 134 new GrammarTransition<KrbCredContainer>( 135 KrbCredStatesEnum.KRB_CRED_TICKETS_STATE, 136 KrbCredStatesEnum.KRB_CRED_ENCPART_TAG_STATE, 137 KerberosConstants.KRB_CRED_ENCPART_TAG, 138 new StoreEncPart() ); 139 } 140 141 142 /** 143 * Get the instance of this grammar 144 * 145 * @return An instance on the KrbCredInfo Grammar 146 */ 147 public static Grammar<KrbCredContainer> getInstance() 148 { 149 return instance; 150 } 151}