/*
* 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.paEncTsEnc;
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.paEncTsEnc.actions.PaEncTsEncInit;
import org.apache.directory.shared.kerberos.codec.paEncTsEnc.actions.StorePaTimestamp;
import org.apache.directory.shared.kerberos.codec.paEncTsEnc.actions.StorePaUsec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class implements the PaEncTsEnc 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 PaEncTsEncGrammar extends AbstractGrammar<PaEncTsEncContainer>
{
/** The logger */
static final Logger LOG = LoggerFactory.getLogger( PaEncTsEncGrammar.class );
/** A speedup for logger */
static final boolean IS_DEBUG = LOG.isDebugEnabled();
/** The instance of grammar. PaEncTsEncGrammar is a singleton */
private static Grammar<PaEncTsEncContainer> instance = new PaEncTsEncGrammar();
/**
* Creates a new PaEncTsEncrGrammar object.
*/
@SuppressWarnings("unchecked")
private PaEncTsEncGrammar()
{
setName( PaEncTsEncGrammar.class.getName() );
// Create the transitions table
super.transitions = new GrammarTransition[PaEncTsEncStatesEnum.LAST_PA_ENC_TS_ENC_STATE.ordinal()][256];
// ============================================================================================
// PaEncTsEnc
// ============================================================================================
// --------------------------------------------------------------------------------------------
// Transition from PaEncTsEnc init to PaEncTsEnc SEQ
// --------------------------------------------------------------------------------------------
// PA-ENC-TS-ENC ::= SEQUENCE {
super.transitions[PaEncTsEncStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<PaEncTsEncContainer>(
PaEncTsEncStatesEnum.START_STATE,
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_STATE,
UniversalTag.SEQUENCE,
new PaEncTsEncInit() );
// --------------------------------------------------------------------------------------------
// Transition from PaEncTsEnc SEQ to patimestamp tag
// --------------------------------------------------------------------------------------------
// PA-ENC-TS-ENC ::= SEQUENCE {
// patimestamp [0]
super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_ENC_STATE.ordinal()][KerberosConstants.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG] =
new GrammarTransition<PaEncTsEncContainer>(
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_STATE,
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG_STATE,
KerberosConstants.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG,
new CheckNotNullLength<PaEncTsEncContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from patimestamp tag to patimestamp value
// --------------------------------------------------------------------------------------------
// PA-ENC-TS-ENC ::= SEQUENCE {
// patimestamp [0] KerberosTime -- client's time --,
super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG_STATE.ordinal()][UniversalTag.GENERALIZED_TIME
.getValue()] =
new GrammarTransition<PaEncTsEncContainer>(
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_TIMESTAMP_TAG_STATE,
PaEncTsEncStatesEnum.PA_ENC_TS_PA_TIMESTAMP_STATE,
UniversalTag.GENERALIZED_TIME,
new StorePaTimestamp() );
// --------------------------------------------------------------------------------------------
// Transition from patimestamp value to pausec tag
// --------------------------------------------------------------------------------------------
// PA-ENC-TS-ENC ::= SEQUENCE {
// ...
// pausec [1]
super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_PA_TIMESTAMP_STATE.ordinal()][KerberosConstants.PA_ENC_TS_ENC_PA_USEC_TAG] =
new GrammarTransition<PaEncTsEncContainer>(
PaEncTsEncStatesEnum.PA_ENC_TS_PA_TIMESTAMP_STATE,
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_TAG_STATE,
KerberosConstants.PA_ENC_TS_ENC_PA_USEC_TAG,
new CheckNotNullLength<PaEncTsEncContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from pausec tag to pausec value
// --------------------------------------------------------------------------------------------
// PA-ENC-TS-ENC ::= SEQUENCE {
// ...
// pausec [1] Microseconds OPTIONAL
// }
super.transitions[PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_TAG_STATE.ordinal()][UniversalTag.INTEGER
.getValue()] =
new GrammarTransition<PaEncTsEncContainer>(
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_TAG_STATE,
PaEncTsEncStatesEnum.PA_ENC_TS_ENC_PA_USEC_STATE,
UniversalTag.INTEGER,
new StorePaUsec() );
}
/**
* Get the instance of this grammar
*
* @return An instance on the PA-ENC-TS-ENC Grammar
*/
public static Grammar<PaEncTsEncContainer> getInstance()
{
return instance;
}
}