/*
* 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.lastReq;
import org.apache.directory.shared.asn1.actions.CheckNotNullLength;
import org.apache.directory.shared.asn1.ber.grammar.AbstractGrammar;
import org.apache.directory.shared.asn1.ber.grammar.Grammar;
import org.apache.directory.shared.asn1.ber.grammar.GrammarTransition;
import org.apache.directory.shared.asn1.ber.tlv.UniversalTag;
import org.apache.directory.shared.kerberos.KerberosConstants;
import org.apache.directory.shared.kerberos.codec.lastReq.actions.LastReqInit;
import org.apache.directory.shared.kerberos.codec.lastReq.actions.StoreLrType;
import org.apache.directory.shared.kerberos.codec.lastReq.actions.StoreLrValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class implements the LastReq 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 LastReqGrammar extends AbstractGrammar<LastReqContainer>
{
/** The logger */
static final Logger LOG = LoggerFactory.getLogger( LastReqGrammar.class );
/** A speedup for logger */
static final boolean IS_DEBUG = LOG.isDebugEnabled();
/** The instance of grammar. LastReqGrammar is a singleton */
private static Grammar<LastReqContainer> instance = new LastReqGrammar();
/**
* Creates a new LastReqGrammar object.
*/
@SuppressWarnings("unchecked")
private LastReqGrammar()
{
setName( LastReqGrammar.class.getName() );
// Create the transitions table
super.transitions = new GrammarTransition[LastReqStatesEnum.LAST_LAST_REQ_STATE.ordinal()][256];
// ============================================================================================
// LastReq
// ============================================================================================
// --------------------------------------------------------------------------------------------
// Transition from LastReq init to LastReq SEQ OF
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF
super.transitions[LastReqStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.START_STATE,
LastReqStatesEnum.LAST_REQ_SEQ_STATE,
UniversalTag.SEQUENCE,
new LastReqInit() );
// --------------------------------------------------------------------------------------------
// Transition from LastReq SEQ OF to LastReq SEQ OF SEQ
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF SEQUENCE {
super.transitions[LastReqStatesEnum.LAST_REQ_SEQ_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.LAST_REQ_SEQ_STATE,
LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE,
UniversalTag.SEQUENCE,
new CheckNotNullLength<LastReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from LastReq SEQ OF SEQ to lr-type tag
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF SEQUENCE {
// lr-type [0]
super.transitions[LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE.ordinal()][KerberosConstants.LAST_REQ_LR_TYPE_TAG] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE,
LastReqStatesEnum.LAST_REQ_LR_TYPE_TAG_STATE,
KerberosConstants.LAST_REQ_LR_TYPE_TAG,
new CheckNotNullLength<LastReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from lr-type tag to lr-type value
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF SEQUENCE {
// lr-type [0] Int32,
super.transitions[LastReqStatesEnum.LAST_REQ_LR_TYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.LAST_REQ_LR_TYPE_TAG_STATE,
LastReqStatesEnum.LAST_REQ_LR_TYPE_STATE,
UniversalTag.INTEGER,
new StoreLrType() );
// --------------------------------------------------------------------------------------------
// Transition from lr-type value lr-value tag
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF SEQUENCE {
// ...
// lr-value [1]
super.transitions[LastReqStatesEnum.LAST_REQ_LR_TYPE_STATE.ordinal()][KerberosConstants.LAST_REQ_LR_VALUE_TAG] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.LAST_REQ_LR_TYPE_STATE,
LastReqStatesEnum.LAST_REQ_LR_VALUE_TAG_STATE,
KerberosConstants.LAST_REQ_LR_VALUE_TAG,
new CheckNotNullLength<LastReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from lr-value tag to lr-value value
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF SEQUENCE {
// ...
// lr-value [1] KerberosTime
super.transitions[LastReqStatesEnum.LAST_REQ_LR_VALUE_TAG_STATE.ordinal()][UniversalTag.GENERALIZED_TIME
.getValue()] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.LAST_REQ_LR_VALUE_TAG_STATE,
LastReqStatesEnum.LAST_REQ_LR_VALUE_STATE,
UniversalTag.GENERALIZED_TIME,
new StoreLrValue() );
// --------------------------------------------------------------------------------------------
// Transition from lr-value value to SEQ OF SEQ
// --------------------------------------------------------------------------------------------
// LastReq ::= SEQUENCE OF SEQUENCE {
// ...
// lr-value [1] KerberosTime
// }
super.transitions[LastReqStatesEnum.LAST_REQ_LR_VALUE_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<LastReqContainer>(
LastReqStatesEnum.LAST_REQ_LR_VALUE_STATE,
LastReqStatesEnum.LAST_REQ_SEQ_SEQ_STATE,
UniversalTag.SEQUENCE,
new CheckNotNullLength<LastReqContainer>() );
}
/**
* Get the instance of this grammar
*
* @return An instance on the LastReq Grammar
*/
public static Grammar<LastReqContainer> getInstance()
{
return instance;
}
}