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20 package org.apache.directory.shared.kerberos.codec.actions;
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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.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.encryptedData.EncryptedDataContainer;
30 import org.apache.directory.shared.kerberos.components.EncryptedData;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
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40 public abstract class AbstractReadEncryptedPart<E extends Asn1Container> extends GrammarAction<E>
41 {
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43 private static final Logger LOG = LoggerFactory.getLogger( AbstractReadEncryptedPart.class );
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46 private static final boolean IS_DEBUG = LOG.isDebugEnabled();
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52 public AbstractReadEncryptedPart( String name )
53 {
54 super( name );
55 }
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65 protected abstract void setEncryptedData( EncryptedData encryptedData, E container );
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71 public final void action( E container ) throws DecoderException
72 {
73 TLV tlv = container.getCurrentTLV();
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76 if ( tlv.getLength() == 0 )
77 {
78 LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) );
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81 throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) );
82 }
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85 EncryptedDataContainerdData/EncryptedDataContainer.html#EncryptedDataContainer">EncryptedDataContainer encryptedDataContainer = new EncryptedDataContainer();
86 encryptedDataContainer.setStream( container.getStream() );
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89 Asn1Decoder.decode( container.getStream(), encryptedDataContainer );
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91 EncryptedData encryptedData = encryptedDataContainer.getEncryptedData();
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93 if ( IS_DEBUG )
94 {
95 LOG.debug( "EncryptedData : {}", encryptedData );
96 }
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98 setEncryptedData( encryptedData, container );
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101 tlv.setExpectedLength( tlv.getExpectedLength() - tlv.getLength() );
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104 container.updateParent();
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106 container.setGrammarEndAllowed( true );
107 }
108 }