/*
* 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.kdcReq;
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.kdcReq.actions.AddPaData;
import org.apache.directory.shared.kerberos.codec.kdcReq.actions.CheckMsgType;
import org.apache.directory.shared.kerberos.codec.kdcReq.actions.StoreKdcReqBody;
import org.apache.directory.shared.kerberos.codec.kdcReq.actions.StorePvno;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class implements the KdcReq 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 KdcReqGrammar extends AbstractGrammar<KdcReqContainer>
{
/** The logger */
static final Logger LOG = LoggerFactory.getLogger( KdcReqGrammar.class );
/** A speedup for logger */
static final boolean IS_DEBUG = LOG.isDebugEnabled();
/** The instance of grammar. KdcReqGrammar is a singleton */
private static Grammar<KdcReqContainer> instance = new KdcReqGrammar();
/**
* Creates a new KdcReqGrammar object.
*/
@SuppressWarnings("unchecked")
private KdcReqGrammar()
{
setName( KdcReqGrammar.class.getName() );
// Create the transitions table
super.transitions = new GrammarTransition[KdcReqStatesEnum.LAST_KDC_REQ_STATE.ordinal()][256];
// ============================================================================================
// KdcReq
// ============================================================================================
// --------------------------------------------------------------------------------------------
// Transition from KdcReq init to KdcReq SEQ
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
super.transitions[KdcReqStatesEnum.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.START_STATE,
KdcReqStatesEnum.KDC_REQ_PVNO_TAG_STATE,
UniversalTag.SEQUENCE,
new CheckNotNullLength<KdcReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from KdcReq SEQ to pvno tag
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// pvno [1]
super.transitions[KdcReqStatesEnum.KDC_REQ_PVNO_TAG_STATE.ordinal()][KerberosConstants.KDC_REQ_PVNO_TAG] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PVNO_TAG_STATE,
KdcReqStatesEnum.KDC_REQ_PVNO_STATE,
KerberosConstants.KDC_REQ_PVNO_TAG,
new CheckNotNullLength<KdcReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from pvno tag to pvno value
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// pvno [1] INTEGER (5) ,
super.transitions[KdcReqStatesEnum.KDC_REQ_PVNO_STATE.ordinal()][UniversalTag.INTEGER.getValue()] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PVNO_STATE,
KdcReqStatesEnum.KDC_REQ_MSG_TYPE_TAG_STATE,
UniversalTag.INTEGER,
new StorePvno() );
// --------------------------------------------------------------------------------------------
// Transition from pvno value to msg-type tag
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// msg-type [2]
super.transitions[KdcReqStatesEnum.KDC_REQ_MSG_TYPE_TAG_STATE.ordinal()][KerberosConstants.KDC_REQ_MSG_TYPE_TAG] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_MSG_TYPE_TAG_STATE,
KdcReqStatesEnum.KDC_REQ_MSG_TYPE_STATE,
KerberosConstants.KDC_REQ_MSG_TYPE_TAG,
new CheckNotNullLength<KdcReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from msg-type tag to msg-type value
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// msg-type [2] INTEGER (10 -- AS -- | 12 -- TGS --),
super.transitions[KdcReqStatesEnum.KDC_REQ_MSG_TYPE_STATE.ordinal()][UniversalTag.INTEGER.getValue()] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_MSG_TYPE_STATE,
KdcReqStatesEnum.KDC_REQ_PA_DATA_OR_REQ_BODY_STATE,
UniversalTag.INTEGER,
new CheckMsgType() );
// --------------------------------------------------------------------------------------------
// Transition from msg-type value to padata tag
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// padata [3]
super.transitions[KdcReqStatesEnum.KDC_REQ_PA_DATA_OR_REQ_BODY_STATE.ordinal()][KerberosConstants.KDC_REQ_PA_DATA_TAG] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PA_DATA_OR_REQ_BODY_STATE,
KdcReqStatesEnum.KDC_REQ_PA_DATA_TAG_STATE,
KerberosConstants.KDC_REQ_PA_DATA_TAG,
new CheckNotNullLength<KdcReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from msg-type value to KDC-REQ-BODY tag (pa-data is missing)
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// req-body [4]
super.transitions[KdcReqStatesEnum.KDC_REQ_PA_DATA_OR_REQ_BODY_STATE.ordinal()][KerberosConstants.KDC_REQ_KDC_REQ_BODY_TAG] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PA_DATA_OR_REQ_BODY_STATE,
KdcReqStatesEnum.KDC_REQ_KDC_REQ_BODY_STATE,
KerberosConstants.KDC_REQ_KDC_REQ_BODY_TAG,
new StoreKdcReqBody() );
// --------------------------------------------------------------------------------------------
// Transition from padata tag to pa-data SEQ
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// padata [3] SEQUENCE OF
super.transitions[KdcReqStatesEnum.KDC_REQ_PA_DATA_TAG_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PA_DATA_TAG_STATE,
KdcReqStatesEnum.KDC_REQ_PA_DATA_SEQ_STATE,
UniversalTag.SEQUENCE,
new CheckNotNullLength<KdcReqContainer>() );
// --------------------------------------------------------------------------------------------
// Transition from pa-data SEQ to pa-data
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// padata [3] SEQUENCE OF <PA-DATA>
super.transitions[KdcReqStatesEnum.KDC_REQ_PA_DATA_SEQ_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PA_DATA_SEQ_STATE,
KdcReqStatesEnum.KDC_REQ_PA_DATA_STATE,
UniversalTag.SEQUENCE,
new AddPaData() );
// --------------------------------------------------------------------------------------------
// Transition from pa-data to pa-data
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// padata [3] SEQUENCE OF <PA-DATA>
super.transitions[KdcReqStatesEnum.KDC_REQ_PA_DATA_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PA_DATA_STATE,
KdcReqStatesEnum.KDC_REQ_PA_DATA_STATE,
UniversalTag.SEQUENCE,
new AddPaData() );
// --------------------------------------------------------------------------------------------
// Transition from pa-data to KDC-REQ-BODY tag
// --------------------------------------------------------------------------------------------
// KDC-REQ ::= SEQUENCE {
// ...
// req-body [4]
super.transitions[KdcReqStatesEnum.KDC_REQ_PA_DATA_STATE.ordinal()][KerberosConstants.KDC_REQ_KDC_REQ_BODY_TAG] =
new GrammarTransition<KdcReqContainer>(
KdcReqStatesEnum.KDC_REQ_PA_DATA_STATE,
KdcReqStatesEnum.KDC_REQ_KDC_REQ_BODY_STATE,
KerberosConstants.KDC_REQ_KDC_REQ_BODY_TAG,
new StoreKdcReqBody() );
}
/**
* Get the instance of this grammar
*
* @return An instance on the KDC-REQ Grammar
*/
public static Grammar<KdcReqContainer> getInstance()
{
return instance;
}
}