| /* |
| * 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 |
| * |
| * https://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.api.ldap.extras.extended.ads_impl.endTransaction.controls; |
| |
| import org.apache.directory.api.asn1.DecoderException; |
| 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.GrammarAction; |
| import org.apache.directory.api.asn1.ber.grammar.GrammarTransition; |
| import org.apache.directory.api.asn1.ber.tlv.TLV; |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.extras.extended.ads_impl.endTransaction.controls.actions.AddControl; |
| import org.apache.directory.api.ldap.extras.extended.ads_impl.endTransaction.controls.actions.StoreControlCriticality; |
| import org.apache.directory.api.ldap.extras.extended.ads_impl.endTransaction.controls.actions.StoreControlValue; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.directory.api.asn1.ber.tlv.UniversalTag.BOOLEAN; |
| import static org.apache.directory.api.asn1.ber.tlv.UniversalTag.OCTET_STRING; |
| import static org.apache.directory.api.asn1.ber.tlv.UniversalTag.SEQUENCE; |
| |
| /** |
| * A grammar to decode controls in a EndTransactionResponse extended operation |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class ControlsGrammar extends AbstractGrammar<ControlsContainer> |
| { |
| /** logger */ |
| private static final Logger LOG = LoggerFactory.getLogger( ControlsGrammar.class ); |
| |
| /** The instance of grammar. ControlsGrammar is a singleton */ |
| private static Grammar<ControlsContainer> instance = new ControlsGrammar(); |
| |
| |
| /** |
| * Creates a new ControlsGrammar object. |
| */ |
| @SuppressWarnings("unchecked") |
| public ControlsGrammar() |
| { |
| setName( ControlsGrammar.class.getName() ); |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[ControlsStates.LAST_STATE.ordinal()][256]; |
| |
| /** |
| * Transition from init state to Control Sequence |
| * |
| * Control ::= SEQUENCE { |
| * ... |
| * |
| * Creates the current control instance |
| */ |
| super.transitions[ControlsStates.START_STATE.ordinal()][SEQUENCE.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.START_STATE, |
| ControlsStates.CONTROL_SEQUENCE_STATE, |
| SEQUENCE, |
| new GrammarAction<ControlsContainer>( "Init Control" ) |
| { |
| public void action( ControlsContainer container ) throws DecoderException |
| { |
| TLV tlv = container.getCurrentTLV(); |
| int expectedLength = tlv.getLength(); |
| |
| // The Length should be null |
| if ( expectedLength == 0 ) |
| { |
| String msg = I18n.err( I18n.ERR_08213_NULL_CONTROL_LENGTH ); |
| LOG.error( msg ); |
| |
| // This will generate a PROTOCOL_ERROR |
| throw new DecoderException( msg ); |
| } |
| } |
| } ); |
| |
| /** |
| * Transition from controlSequence state to control type |
| * |
| * Control ::= SEQUENCE { |
| * controlType LDAPOID, |
| * ... |
| * |
| * Creates the current control instance |
| */ |
| super.transitions[ControlsStates.CONTROL_SEQUENCE_STATE.ordinal()][OCTET_STRING.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_SEQUENCE_STATE, |
| ControlsStates.CONTROL_TYPE_STATE, |
| OCTET_STRING, |
| new AddControl() ); |
| |
| /** |
| * Transition from control type to control criticality |
| * |
| * Control ::= SEQUENCE { |
| * controlType LDAPOID, |
| * criticality BOOLEAN DEFAULT FALSE, |
| * ... |
| * |
| * Store the criticality |
| */ |
| super.transitions[ControlsStates.CONTROL_TYPE_STATE.ordinal()][BOOLEAN.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_TYPE_STATE, |
| ControlsStates.CONTROL_CRITICALITY_STATE, |
| BOOLEAN, |
| new StoreControlCriticality() ); |
| |
| /** |
| * Transition from control type to control value |
| * |
| * Control ::= SEQUENCE { |
| * controlType LDAPOID, |
| * ... |
| * controlValue OCTET STRING OPTIONAL } |
| * |
| * Store the value |
| */ |
| super.transitions[ControlsStates.CONTROL_TYPE_STATE.ordinal()][OCTET_STRING.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_TYPE_STATE, |
| ControlsStates.CONTROL_VALUE_STATE, |
| OCTET_STRING, |
| new StoreControlValue() ); |
| |
| /** |
| * Transition from control type to control sequence |
| * |
| * Control ::= SEQUENCE { |
| * controlType LDAPOID, |
| * |
| * Nothing to do |
| */ |
| super.transitions[ControlsStates.CONTROL_TYPE_STATE.ordinal()][SEQUENCE.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_TYPE_STATE, |
| ControlsStates.CONTROL_SEQUENCE_STATE, |
| SEQUENCE ); |
| |
| /** |
| * Transition from control criticality to control value |
| * |
| * Control ::= SEQUENCE { |
| * ... |
| * criticality BOOLEAN DEFAULT FALSE, |
| * controlValue OCTET STRING OPTIONAL } |
| * |
| * Store the value |
| */ |
| super.transitions[ControlsStates.CONTROL_CRITICALITY_STATE.ordinal()][OCTET_STRING.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_CRITICALITY_STATE, |
| ControlsStates.CONTROL_VALUE_STATE, |
| OCTET_STRING, |
| new StoreControlValue() ); |
| |
| /** |
| * Transition from control criticality to control sequence |
| * |
| * Control ::= SEQUENCE { |
| * ... |
| * criticality BOOLEAN DEFAULT FALSE, |
| * |
| * Nothing to do |
| */ |
| super.transitions[ControlsStates.CONTROL_CRITICALITY_STATE.ordinal()][SEQUENCE.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_CRITICALITY_STATE, |
| ControlsStates.CONTROL_SEQUENCE_STATE, |
| SEQUENCE ); |
| |
| /** |
| * Transition from control value to control sequence |
| * |
| * Control ::= SEQUENCE { |
| * |
| * Nothing to do |
| */ |
| super.transitions[ControlsStates.CONTROL_VALUE_STATE.ordinal()][SEQUENCE.getValue()] = |
| new GrammarTransition<ControlsContainer>( |
| ControlsStates.CONTROL_VALUE_STATE, |
| ControlsStates.CONTROL_SEQUENCE_STATE, |
| SEQUENCE ); |
| } |
| |
| |
| /** |
| * This class is a singleton. |
| * |
| * @return An instance on this grammar |
| */ |
| public static Grammar<ControlsContainer> getInstance() |
| { |
| return instance; |
| } |
| } |