1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.directory.api.asn1.actions;
21
22
23 import org.apache.directory.api.asn1.DecoderException;
24 import org.apache.directory.api.asn1.ber.Asn1Container;
25 import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
26 import org.apache.directory.api.asn1.ber.tlv.TLV;
27 import org.apache.directory.api.i18n.I18n;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30
31
32 /**
33 * An action that checks the length is not null
34 *
35 * @param C The container type
36 *
37 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
38 */
39 public class CheckNotNullLength<C extends Asn1Container> extends GrammarAction<C>
40 {
41 /** The logger */
42 private static final Logger LOG = LoggerFactory.getLogger( CheckNotNullLength.class );
43
44
45 /**
46 * Instantiates the action.
47 */
48 public CheckNotNullLength()
49 {
50 super( "Check that the length is not null" );
51 }
52
53
54 /**
55 * {@inheritDoc}
56 */
57 public void action( C container ) throws DecoderException
58 {
59 TLV tlv = container.getCurrentTLV();
60
61 // The Length should not be null
62 if ( tlv.getLength() == 0 )
63 {
64 LOG.error( I18n.err( I18n.ERR_04066 ) );
65
66 // This will generate a PROTOCOL_ERROR
67 throw new DecoderException( I18n.err( I18n.ERR_04067 ) );
68 }
69 }
70 }