/*
* 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.adAndOr;
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.adAndOr.actions.AdAndOrInit;
import org.apache.directory.shared.kerberos.codec.adAndOr.actions.StoreConditionCount;
import org.apache.directory.shared.kerberos.codec.adAndOr.actions.StoreElements;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class implements the AdAndOr 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 AdAndOrGrammar extends AbstractGrammar<AdAndOrContainer>
{
/** The logger */
static final Logger LOG = LoggerFactory.getLogger( AdAndOrGrammar.class );
/** A speedup for logger */
static final boolean IS_DEBUG = LOG.isDebugEnabled();
/** The instance of grammar. AdAndOrGrammar is a singleton */
private static Grammar<AdAndOrContainer> instance = new AdAndOrGrammar();
/**
* Creates a new AdAndOrGrammar object.
*/
@SuppressWarnings("unchecked")
private AdAndOrGrammar()
{
setName( AdAndOrGrammar.class.getName() );
// Create the transitions table
super.transitions = new GrammarTransition[AdAndOrStatesEnum.LAST_AD_AND_OR_STATE.ordinal()][256];
// ============================================================================================
// AdAndOr
// ============================================================================================
// --------------------------------------------------------------------------------------------
// Transition from AdAndOr init to AdAndOr SEQ
// --------------------------------------------------------------------------------------------
// AD-AND-OR ::= SEQUENCE {
super.transitions[AdAndOrStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<AdAndOrContainer>(
AdAndOrStatesEnum.START_STATE,
AdAndOrStatesEnum.AD_AND_OR_STATE,
UniversalTag.SEQUENCE,
new AdAndOrInit() );
// --------------------------------------------------------------------------------------------
// Transition from AdAndOr SEQ to condition-count tag
// --------------------------------------------------------------------------------------------
// AD-AND-OR ::= SEQUENCE {
// condition-count [0]
super.transitions[AdAndOrStatesEnum.AD_AND_OR_STATE.ordinal()][KerberosConstants.AD_AND_OR_CONDITION_COUNT_TAG] =
new GrammarTransition<AdAndOrContainer>(
AdAndOrStatesEnum.AD_AND_OR_STATE,
AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_TAG_STATE,
KerberosConstants.AD_AND_OR_CONDITION_COUNT_TAG,
new CheckNotNullLength<AdAndOrContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from condition-count tag to condition-count value
// --------------------------------------------------------------------------------------------
// AD-AND-OR ::= SEQUENCE {
// condition-count [0] Int32,
super.transitions[AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_TAG_STATE.ordinal()][UniversalTag.INTEGER
.getValue()] =
new GrammarTransition<AdAndOrContainer>(
AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_TAG_STATE,
AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_STATE,
UniversalTag.INTEGER,
new StoreConditionCount() );
// --------------------------------------------------------------------------------------------
// Transition from condition-countvalue to elements
// --------------------------------------------------------------------------------------------
// AD-AND-OR ::= SEQUENCE {
// ...
// elements [1] AuthorizationData
// }
super.transitions[AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_STATE.ordinal()][KerberosConstants.AD_AND_OR_ELEMENTS_TAG] =
new GrammarTransition<AdAndOrContainer>(
AdAndOrStatesEnum.AD_AND_OR_CONDITION_COUNT_STATE,
AdAndOrStatesEnum.AD_AND_OR_ELEMENTS_TAG_STATE,
KerberosConstants.AD_AND_OR_ELEMENTS_TAG,
new StoreElements() );
}
/**
* Get the instance of this grammar
*
* @return An instance on the AD-AND-OR Grammar
*/
public static Grammar<AdAndOrContainer> getInstance()
{
return instance;
}
}