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.hostAddress; 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.hostAddress.actions.HostAddressInit; 030import org.apache.directory.shared.kerberos.codec.hostAddress.actions.StoreAddrType; 031import org.apache.directory.shared.kerberos.codec.hostAddress.actions.StoreAddress; 032import org.slf4j.Logger; 033import org.slf4j.LoggerFactory; 034 035 036/** 037 * This class implements the HostAddress 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 HostAddressGrammar extends AbstractGrammar<HostAddressContainer> 044{ 045 /** The logger */ 046 static final Logger LOG = LoggerFactory.getLogger( HostAddressGrammar.class ); 047 048 /** A speedup for logger */ 049 static final boolean IS_DEBUG = LOG.isDebugEnabled(); 050 051 /** The instance of grammar. HostAddressGrammar is a singleton */ 052 private static Grammar<HostAddressContainer> instance = new HostAddressGrammar(); 053 054 055 /** 056 * Creates a new HostAddressGrammar object. 057 */ 058 @SuppressWarnings("unchecked") 059 private HostAddressGrammar() 060 { 061 setName( HostAddressGrammar.class.getName() ); 062 063 // Create the transitions table 064 super.transitions = new GrammarTransition[HostAddressStatesEnum.LAST_HOST_ADDRESS_STATE.ordinal()][256]; 065 066 // ============================================================================================ 067 // HostAddress 068 // ============================================================================================ 069 // -------------------------------------------------------------------------------------------- 070 // Transition from HostAddress init to HostAddress SEQ 071 // -------------------------------------------------------------------------------------------- 072 // HostAddress ::= SEQUENCE 073 super.transitions[HostAddressStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = 074 new GrammarTransition<HostAddressContainer>( 075 HostAddressStatesEnum.START_STATE, 076 HostAddressStatesEnum.HOST_ADDRESS_SEQ_STATE, 077 UniversalTag.SEQUENCE, 078 new HostAddressInit() ); 079 080 // -------------------------------------------------------------------------------------------- 081 // Transition from HostAddress SEQ to addr-type tag 082 // -------------------------------------------------------------------------------------------- 083 // HostAddress ::= SEQUENCE 084 // addr-type [0] 085 super.transitions[HostAddressStatesEnum.HOST_ADDRESS_SEQ_STATE.ordinal()][KerberosConstants.HOST_ADDRESS_ADDR_TYPE_TAG] = 086 new GrammarTransition<HostAddressContainer>( 087 HostAddressStatesEnum.HOST_ADDRESS_SEQ_STATE, 088 HostAddressStatesEnum.HOST_ADDRESS_ADDR_TYPE_TAG_STATE, 089 KerberosConstants.HOST_ADDRESS_ADDR_TYPE_TAG, 090 new CheckNotNullLength<HostAddressContainer>() ); 091 092 // -------------------------------------------------------------------------------------------- 093 // Transition from addr-type tag to addr-type value 094 // -------------------------------------------------------------------------------------------- 095 // HostAddress ::= SEQUENCE 096 // addr-type [0] Int32, 097 super.transitions[HostAddressStatesEnum.HOST_ADDRESS_ADDR_TYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER 098 .getValue()] = 099 new GrammarTransition<HostAddressContainer>( 100 HostAddressStatesEnum.HOST_ADDRESS_ADDR_TYPE_TAG_STATE, 101 HostAddressStatesEnum.HOST_ADDRESS_ADDR_TYPE_STATE, 102 UniversalTag.INTEGER, 103 new StoreAddrType() ); 104 105 // -------------------------------------------------------------------------------------------- 106 // Transition from addr-type value to address tag 107 // -------------------------------------------------------------------------------------------- 108 // HostAddress ::= SEQUENCE 109 // ... 110 // address [1] 111 super.transitions[HostAddressStatesEnum.HOST_ADDRESS_ADDR_TYPE_STATE.ordinal()][KerberosConstants.HOST_ADDRESS_ADDRESS_TAG] = 112 new GrammarTransition<HostAddressContainer>( 113 HostAddressStatesEnum.HOST_ADDRESS_ADDR_TYPE_STATE, 114 HostAddressStatesEnum.HOST_ADDRESS_ADDRESS_TAG_STATE, 115 KerberosConstants.HOST_ADDRESS_ADDRESS_TAG, 116 new CheckNotNullLength<HostAddressContainer>() ); 117 118 // -------------------------------------------------------------------------------------------- 119 // Transition from address tag to address value 120 // -------------------------------------------------------------------------------------------- 121 // HostAddress ::= SEQUENCE 122 // ... 123 // address [1] OCTET STRING 124 super.transitions[HostAddressStatesEnum.HOST_ADDRESS_ADDRESS_TAG_STATE.ordinal()][UniversalTag.OCTET_STRING 125 .ordinal()] = 126 new GrammarTransition<HostAddressContainer>( 127 HostAddressStatesEnum.HOST_ADDRESS_ADDRESS_TAG_STATE, 128 HostAddressStatesEnum.HOST_ADDRESS_ADDRESS_STATE, 129 UniversalTag.OCTET_STRING, 130 new StoreAddress() ); 131 } 132 133 134 /** 135 * Get the instance of this grammar 136 * 137 * @return An instance on the HostAddress Grammar 138 */ 139 public static Grammar<HostAddressContainer> getInstance() 140 { 141 return instance; 142 } 143}