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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.encryptionKey.EncryptionKeyContainer;
30 import org.apache.directory.shared.kerberos.components.EncryptionKey;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
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40 public abstract class AbstractReadEncryptionKey<E extends Asn1Container> extends GrammarAction<E>
41 {
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43 private static final Logger LOG = LoggerFactory.getLogger( AbstractReadEncryptionKey.class );
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46 private static final boolean IS_DEBUG = LOG.isDebugEnabled();
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52 public AbstractReadEncryptionKey( String name )
53 {
54 super( name );
55 }
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64 protected abstract void setEncryptionKey( EncryptionKey encryptionKey, E container );
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70 public final void action( E container ) throws DecoderException
71 {
72 TLV tlv = container.getCurrentTLV();
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75 if ( tlv.getLength() == 0 )
76 {
77 LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) );
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80 throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) );
81 }
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84 EncryptionKeyContaineronKey/EncryptionKeyContainer.html#EncryptionKeyContainer">EncryptionKeyContainer encryptionKeyContainer = new EncryptionKeyContainer();
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87 Asn1Decoder.decode( container.getStream(), encryptionKeyContainer );
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89 EncryptionKey encryptionKey = encryptionKeyContainer.getEncryptionKey();
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91 if ( IS_DEBUG )
92 {
93 LOG.debug( "EncryptionKey : {}", encryptionKey );
94 }
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96 setEncryptionKey( encryptionKey, container );
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99 tlv.setExpectedLength( tlv.getExpectedLength() - tlv.getLength() );
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102 container.updateParent();
103 }
104 }