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20 package org.apache.directory.shared.kerberos.codec.kdcReqBody.actions;
21
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23 import org.apache.directory.api.asn1.DecoderException;
24 import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
25 import org.apache.directory.api.asn1.ber.tlv.BerValue;
26 import org.apache.directory.api.asn1.ber.tlv.IntegerDecoder;
27 import org.apache.directory.api.asn1.ber.tlv.IntegerDecoderException;
28 import org.apache.directory.api.asn1.ber.tlv.TLV;
29 import org.apache.directory.api.i18n.I18n;
30 import org.apache.directory.api.util.Strings;
31 import org.apache.directory.shared.kerberos.codec.kdcReqBody.KdcReqBodyContainer;
32 import org.apache.directory.shared.kerberos.codec.types.EncryptionType;
33 import org.apache.directory.shared.kerberos.components.KdcReqBody;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
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43 public class AddEType extends GrammarAction<KdcReqBodyContainer>
44 {
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46 private static final Logger LOG = LoggerFactory.getLogger( AddEType.class );
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49 private static final boolean IS_DEBUG = LOG.isDebugEnabled();
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55 public AddEType()
56 {
57 super( "KDC-REQ-BODY AddEType" );
58 }
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64 public void action( KdcReqBodyContainer kdcReqBodyContainer ) throws DecoderException
65 {
66 TLV tlv = kdcReqBodyContainer.getCurrentTLV();
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68
69 if ( tlv.getLength() == 0 )
70 {
71 LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) );
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74 throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) );
75 }
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77 KdcReqBody kdcReqBody = kdcReqBodyContainer.getKdcReqBody();
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79 BerValue value = tlv.getValue();
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81 try
82 {
83 int etype = IntegerDecoder.parse( value );
84 EncryptionType encryptionType = EncryptionType.getTypeByValue( etype );
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86 kdcReqBody.addEType( encryptionType );
87
88 if ( IS_DEBUG )
89 {
90 LOG.debug( "EncryptionType : {}", encryptionType );
91 }
92 }
93 catch ( IntegerDecoderException ide )
94 {
95 LOG.error( I18n.err( I18n.ERR_01310_INTEGER_DECODING_ERROR, Strings.dumpBytes( value.getData() ) ) );
96
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98 throw new DecoderException( ide.getMessage() );
99 }
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101 kdcReqBodyContainer.setGrammarEndAllowed( true );
102 }
103 }