| /* |
| * 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.krbSafe; |
| |
| |
| 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.krbSafe.actions.CheckMsgType; |
| import org.apache.directory.shared.kerberos.codec.krbSafe.actions.KrbSafeInit; |
| import org.apache.directory.shared.kerberos.codec.krbSafe.actions.StoreChecksum; |
| import org.apache.directory.shared.kerberos.codec.krbSafe.actions.StorePvno; |
| import org.apache.directory.shared.kerberos.codec.krbSafe.actions.StoreSafeBody; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * This class implements the KRB-SAFE 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 KrbSafeGrammar extends AbstractGrammar<KrbSafeContainer> |
| { |
| /** The logger */ |
| static final Logger LOG = LoggerFactory.getLogger( KrbSafeGrammar.class ); |
| |
| /** A speedup for logger */ |
| static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The instance of grammar. KrbSafeGrammar is a singleton */ |
| private static Grammar<KrbSafeContainer> instance = new KrbSafeGrammar(); |
| |
| |
| /** |
| * Creates a new KrbSafeGrammar object. |
| */ |
| @SuppressWarnings("unchecked") |
| private KrbSafeGrammar() |
| { |
| setName( KrbSafeGrammar.class.getName() ); |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[KrbSafeStatesEnum.LAST_KRB_SAFE_STATE.ordinal()][256]; |
| |
| // ============================================================================================ |
| // KRB-SAFE |
| // ============================================================================================ |
| // -------------------------------------------------------------------------------------------- |
| // Transition from KrbSafe init to KrbSafe tag |
| // -------------------------------------------------------------------------------------------- |
| // KRB-SAFE ::= [APPLICATION 20] |
| super.transitions[KrbSafeStatesEnum.START_STATE.ordinal()][KerberosConstants.KRB_SAFE_TAG] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.START_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_TAG_STATE, |
| KerberosConstants.KRB_SAFE_TAG, |
| new KrbSafeInit() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from KrbSafe tag to KrbSafe SEQ |
| // -------------------------------------------------------------------------------------------- |
| // KRB-SAFE ::= [APPLICATION 20] SEQUENCE { |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_TAG_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_TAG_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_SEQ_STATE, |
| UniversalTag.SEQUENCE, |
| new CheckNotNullLength<KrbSafeContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from KrbSafe SEQ to pvno tag |
| // -------------------------------------------------------------------------------------------- |
| // KRB-SAFE ::= SEQUENCE { |
| // pvno [0] |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_SEQ_STATE.ordinal()][KerberosConstants.KRB_SAFE_PVNO_TAG] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_SEQ_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_PVNO_TAG_STATE, |
| KerberosConstants.KRB_SAFE_PVNO_TAG, |
| new CheckNotNullLength<KrbSafeContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from pvno tag to pvno value |
| // -------------------------------------------------------------------------------------------- |
| // KRB-SAFE ::= SEQUENCE { |
| // pvno [0] INTEGER (5) , |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_PVNO_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_PVNO_TAG_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_PVNO_STATE, |
| UniversalTag.INTEGER, |
| new StorePvno() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from pvno to msg-type tag |
| // -------------------------------------------------------------------------------------------- |
| // msg-type [1] |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_PVNO_STATE.ordinal()][KerberosConstants.KRB_SAFE_MSGTYPE_TAG] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_PVNO_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_MSGTYPE_TAG_STATE, |
| KerberosConstants.KRB_SAFE_MSGTYPE_TAG, |
| new CheckNotNullLength<KrbSafeContainer>() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from msg-type tag to msg-type value |
| // -------------------------------------------------------------------------------------------- |
| // msg-type [1] INTEGER (30) |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_MSGTYPE_TAG_STATE.ordinal()][UniversalTag.INTEGER.getValue()] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_MSGTYPE_TAG_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_MSGTYPE_STATE, |
| UniversalTag.INTEGER, |
| new CheckMsgType() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from msg-type value to safe-body tag |
| // -------------------------------------------------------------------------------------------- |
| // safe-body [2] KRB-SAFE-BODY |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_MSGTYPE_STATE.ordinal()][KerberosConstants.KRB_SAFE_SAFE_BODY_TAG] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_MSGTYPE_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_SAFE_BODY_TAG_STATE, |
| KerberosConstants.KRB_SAFE_SAFE_BODY_TAG, |
| new StoreSafeBody() ); |
| |
| // -------------------------------------------------------------------------------------------- |
| // Transition from safe-body tag to cksum tag |
| // -------------------------------------------------------------------------------------------- |
| // cksum [3] Checksum |
| super.transitions[KrbSafeStatesEnum.KRB_SAFE_SAFE_BODY_TAG_STATE.ordinal()][KerberosConstants.KRB_SAFE_CKSUM_TAG] = |
| new GrammarTransition<KrbSafeContainer>( |
| KrbSafeStatesEnum.KRB_SAFE_SAFE_BODY_TAG_STATE, |
| KrbSafeStatesEnum.KRB_SAFE_CKSUM_TAG_STATE, |
| KerberosConstants.KRB_SAFE_CKSUM_TAG, |
| new StoreChecksum() ); |
| } |
| |
| |
| /** |
| * Get the instance of this grammar |
| * |
| * @return An instance on the KRB-SAFE Grammar |
| */ |
| public static Grammar<KrbSafeContainer> getInstance() |
| { |
| return instance; |
| } |
| } |