| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.shared.kerberos.codec.apRep; |
| |
| |
| import org.apache.directory.api.asn1.actions.CheckNotNullLength; |
| import org.apache.directory.api.asn1.ber.grammar.AbstractGrammar; |
| import org.apache.directory.api.asn1.ber.grammar.Grammar; |
| import org.apache.directory.api.asn1.ber.grammar.GrammarTransition; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.shared.kerberos.KerberosConstants; |
| import org.apache.directory.shared.kerberos.codec.apRep.actions.ApRepInit; |
| import org.apache.directory.shared.kerberos.codec.apRep.actions.CheckMsgType; |
| import org.apache.directory.shared.kerberos.codec.apRep.actions.StoreEncPart; |
| import org.apache.directory.shared.kerberos.codec.apRep.actions.StorePvno; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * This class implements the AP-REP structure. All the actions are declared |
| * in this class. As it is a singleton, these declaration are only done once. If |
| * an action is to be added or modified, this is where the work is to be done ! |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class ApRepGrammar extends AbstractGrammar<ApRepContainer> |
| { |
| /** The logger */ |
| static final Logger LOG = LoggerFactory.getLogger( ApRepGrammar.class ); |
| |
| /** A speedup for logger */ |
| static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The instance of grammar. ApRepGrammar is a singleton */ |
| private static Grammar<ApRepContainer> instance = new ApRepGrammar(); |
| |
| |
| /** |
| * Creates a new ApRepGrammar object. |
| */ |
| @SuppressWarnings("unchecked") |
| private ApRepGrammar() |
| { |
| setName( ApRepGrammar.class.getName() ); |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[ApRepStatesEnum.LAST_AP_REP_STATE.ordinal()][256]; |
| |
| // ============================================================================================ |
| // AP-REP |
| // ============================================================================================ |
| // -------------------------------------------------------------------------------------------- |
| // Transition from AP-REP init to AP-REP tag |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] |
| super.transitions[ApRepStatesEnum.START_STATE.ordinal()][KerberosConstants.AP_REP_TAG] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.START_STATE, |
| ApRepStatesEnum.AP_REP_STATE, |
| KerberosConstants.AP_REP_TAG, |
| new ApRepInit() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from AP-REP tag to AP-REP SEQUENCE |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] SEQUENCE OF { |
| super.transitions[ApRepStatesEnum.AP_REP_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.AP_REP_STATE, |
| ApRepStatesEnum.AP_REP_SEQ_STATE, |
| UniversalTag.SEQUENCE, |
| new CheckNotNullLength<ApRepContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from AP-REP SEQUENCE to pvno tag |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] SEQUENCE OF { |
| // pvno [0] |
| super.transitions[ApRepStatesEnum.AP_REP_SEQ_STATE.ordinal()][KerberosConstants.AP_REP_PVNO_TAG] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.AP_REP_SEQ_STATE, |
| ApRepStatesEnum.AP_REP_PVNO_TAG_STATE, |
| KerberosConstants.AP_REP_PVNO_TAG, |
| new CheckNotNullLength<ApRepContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from pvno tag to pvno value |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] SEQUENCE OF { |
| // pvno [0] INTEGER (5), |
| super.transitions[ApRepStatesEnum.AP_REP_PVNO_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.AP_REP_PVNO_TAG_STATE, |
| ApRepStatesEnum.AP_REP_PVNO_STATE, |
| UniversalTag.INTEGER, |
| new StorePvno() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from pvno value to msg-type tag |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] SEQUENCE OF { |
| // ... |
| // msg-type [1] |
| super.transitions[ApRepStatesEnum.AP_REP_PVNO_STATE.ordinal()][KerberosConstants.AP_REP_MSG_TYPE_TAG] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.AP_REP_PVNO_STATE, |
| ApRepStatesEnum.AP_REP_MSG_TYPE_TAG_STATE, |
| KerberosConstants.AP_REP_MSG_TYPE_TAG, |
| new CheckNotNullLength<ApRepContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from msg-type tag to msg-type value |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] SEQUENCE OF { |
| // ... |
| // msg-type [1] INTEGER (15), |
| super.transitions[ApRepStatesEnum.AP_REP_MSG_TYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.AP_REP_MSG_TYPE_TAG_STATE, |
| ApRepStatesEnum.AP_REP_MSG_TYPE_STATE, |
| UniversalTag.INTEGER, |
| new CheckMsgType() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from msg-type value to enc-part |
| // -------------------------------------------------------------------------------------------- |
| // AP-REP ::= [APPLICATION 15] SEQUENCE OF { |
| // ... |
| // enc-part [2] EncryptedData -- EncAPRepPart |
| // } |
| super.transitions[ApRepStatesEnum.AP_REP_MSG_TYPE_STATE.ordinal()][KerberosConstants.AP_REP_ENC_PART_TAG] = |
| new GrammarTransition<ApRepContainer>( |
| ApRepStatesEnum.AP_REP_MSG_TYPE_STATE, |
| ApRepStatesEnum.AP_REP_ENC_PART_STATE, |
| KerberosConstants.AP_REP_ENC_PART_TAG, |
| new StoreEncPart() ); |
| } |
| |
| |
| /** |
| * Get the instance of this grammar |
| * |
| * @return An instance on the AP-REP Grammar |
| */ |
| public static Grammar<ApRepContainer> getInstance() |
| { |
| return instance; |
| } |
| } |