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.shared.kerberos.codec.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.BerValue;
27 import org.apache.directory.api.asn1.ber.tlv.TLV;
28 import org.apache.directory.api.i18n.I18n;
29 import org.apache.directory.api.util.Strings;
30 import org.apache.directory.shared.kerberos.KerberosTime;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
33
34
35 /**
36 * The action used to read the KerberosTime
37 *
38 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
39 */
40 public abstract class AbstractReadKerberosTime<E extends Asn1Container> extends GrammarAction<E>
41 {
42 /** The logger */
43 private static final Logger LOG = LoggerFactory.getLogger( AbstractReadKerberosTime.class );
44
45 /** Speedup for logs */
46 private static final boolean IS_DEBUG = LOG.isDebugEnabled();
47
48
49 /**
50 * Instantiates a new AbstractReadKerberosTime action.
51 */
52 public AbstractReadKerberosTime( String name )
53 {
54 super( name );
55 }
56
57
58 /**
59 *
60 * set the KerberosTime on the ASN.1 object present in the container
61 *
62 * @param krbtime the KerberosTime decoded from the TLV
63 * @param container the ASN.1 object's container
64 */
65 protected abstract void setKerberosTime( KerberosTime krbtime, E container );
66
67
68 /**
69 * {@inheritDoc}
70 */
71 public final void action( E container ) throws DecoderException
72 {
73 TLV tlv = container.getCurrentTLV();
74
75 // The Length should not be null and should be 15
76 if ( tlv.getLength() != 15 )
77 {
78 LOG.error( I18n.err( I18n.ERR_04066 ) );
79
80 // This will generate a PROTOCOL_ERROR
81 throw new DecoderException( I18n.err( I18n.ERR_04067 ) );
82 }
83
84 // The value is the KerberosTime
85 BerValue value = tlv.getValue();
86 String date = Strings.utf8ToString( value.getData() );
87
88 try
89 {
90 KerberosTime krbTime = new KerberosTime( date );
91
92 if ( IS_DEBUG )
93 {
94 LOG.debug( "decoded kerberos time is : {}", krbTime );
95 }
96
97 setKerberosTime( krbTime, container );
98 }
99 catch ( IllegalArgumentException iae )
100 {
101 LOG.error( I18n.err( I18n.ERR_04066 ) );
102
103 // This will generate a PROTOCOL_ERROR
104 throw new DecoderException( I18n.err( I18n.ERR_04067 ) );
105 }
106 }
107 }