/*
* 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.api.ldap.codec.actions;
import org.apache.directory.api.asn1.DecoderException;
import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
import org.apache.directory.api.asn1.ber.tlv.TLV;
import org.apache.directory.api.i18n.I18n;
import org.apache.directory.api.ldap.codec.api.LdapMessageContainer;
import org.apache.directory.api.ldap.codec.api.MessageDecorator;
import org.apache.directory.api.ldap.model.message.Message;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The action used to check that the TLV length is not null
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class CheckLengthNotNull extends GrammarAction<LdapMessageContainer<MessageDecorator<? extends Message>>>
{
/** The logger */
private static final Logger LOG = LoggerFactory.getLogger( CheckLengthNotNull.class );
/**
* Instantiates the action.
*/
public CheckLengthNotNull()
{
super( "Check that the length is not null" );
}
/**
* {@inheritDoc}
*/
public void action( LdapMessageContainer<MessageDecorator<? extends Message>> 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_04096 );
LOG.error( msg );
// This will generate a PROTOCOL_ERROR
throw new DecoderException( msg );
}
}
}