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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  
21  package org.apache.directory.shared.kerberos.codec.encTicketPart.actions;
22  
23  
24  import org.apache.directory.api.asn1.DecoderException;
25  import org.apache.directory.api.asn1.ber.Asn1Decoder;
26  import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
27  import org.apache.directory.api.asn1.ber.tlv.TLV;
28  import org.apache.directory.api.i18n.I18n;
29  import org.apache.directory.shared.kerberos.codec.encTicketPart.EncTicketPartContainer;
30  import org.apache.directory.shared.kerberos.codec.transitedEncoding.TransitedEncodingContainer;
31  import org.apache.directory.shared.kerberos.components.TransitedEncoding;
32  import org.slf4j.Logger;
33  import org.slf4j.LoggerFactory;
34  
35  
36  /**
37   * Store the transited value of EncTicketPart.
38   *
39   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
40   */
41  public class StoreTransited extends GrammarAction<EncTicketPartContainer>
42  {
43      /** The logger */
44      private static final Logger LOG = LoggerFactory.getLogger( StoreTransited.class );
45  
46      /** Speedup for logs */
47      private static final boolean IS_DEBUG = LOG.isDebugEnabled();
48  
49  
50      /**
51       * Creates a new instance of StoreTransited.
52       */
53      public StoreTransited()
54      {
55          super( "EncTicketPart transited" );
56      }
57  
58  
59      /**
60       * {@inheritDoc}
61       */
62      public void action( EncTicketPartContainer encTicketPartContainer ) throws DecoderException
63      {
64          TLV tlv = encTicketPartContainer.getCurrentTLV();
65  
66          // The Length should not be null
67          if ( tlv.getLength() == 0 )
68          {
69              LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) );
70  
71              // This will generate a PROTOCOL_ERROR
72              throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) );
73          }
74  
75          TransitedEncodingContaineritedEncoding/TransitedEncodingContainer.html#TransitedEncodingContainer">TransitedEncodingContainer transitedContainer = new TransitedEncodingContainer();
76  
77          // Now, let's decode the TransitedEncoding
78          Asn1Decoder.decode( encTicketPartContainer.getStream(), transitedContainer );
79  
80          TransitedEncoding te = transitedContainer.getTransitedEncoding();
81  
82          if ( IS_DEBUG )
83          {
84              LOG.debug( "TransitedEncoding {}", te );
85          }
86  
87          encTicketPartContainer.getEncTicketPart().setTransited( te );
88  
89          // Update the expected length for the current TLV
90          tlv.setExpectedLength( tlv.getExpectedLength() - tlv.getLength() );
91  
92          // Update the parent
93          encTicketPartContainer.updateParent();
94      }
95  }