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20 package org.apache.directory.server.kerberos.shared.io.encoder;
21
22
23 import java.io.ByteArrayOutputStream;
24 import java.io.IOException;
25 import java.nio.ByteBuffer;
26
27 import org.apache.directory.server.kerberos.shared.messages.ErrorMessage;
28 import org.apache.directory.shared.asn1.der.ASN1OutputStream;
29 import org.apache.directory.shared.asn1.der.DERApplicationSpecific;
30 import org.apache.directory.shared.asn1.der.DERGeneralString;
31 import org.apache.directory.shared.asn1.der.DERInteger;
32 import org.apache.directory.shared.asn1.der.DEROctetString;
33 import org.apache.directory.shared.asn1.der.DERSequence;
34 import org.apache.directory.shared.asn1.der.DERTaggedObject;
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41 public class ErrorMessageEncoder
42 {
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48
49
50 public void encode( ErrorMessage message, ByteBuffer out ) throws IOException
51 {
52 ASN1OutputStream aos = new ASN1OutputStream( out );
53
54 DERSequence errorReply = encodeErrorMessageSequence( message );
55 aos.writeObject( DERApplicationSpecific.valueOf( message.getMessageType().getOrdinal(), errorReply ) );
56
57 aos.close();
58 }
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67
68 public byte[] encode( ErrorMessage message ) throws IOException
69 {
70 ByteArrayOutputStream baos = new ByteArrayOutputStream();
71 ASN1OutputStream aos = new ASN1OutputStream( baos );
72
73 DERSequence errorReply = encodeErrorMessageSequence( message );
74 aos.writeObject( DERApplicationSpecific.valueOf( message.getMessageType().getOrdinal(), errorReply ) );
75
76 aos.close();
77
78 return baos.toByteArray();
79 }
80
81
82 private DERSequence encodeErrorMessageSequence( ErrorMessage message )
83 {
84 DERSequence sequence = new DERSequence();
85
86 sequence.add( new DERTaggedObject( 0, DERInteger.valueOf( message.getProtocolVersionNumber() ) ) );
87
88 sequence.add( new DERTaggedObject( 1, DERInteger.valueOf( message.getMessageType().getOrdinal() ) ) );
89
90 if ( message.getClientTime() != null )
91 {
92 sequence.add( new DERTaggedObject( 2, KerberosTimeEncoder.encode( message.getClientTime() ) ) );
93 }
94
95 if ( message.getClientMicroSecond() != null )
96 {
97 sequence.add( new DERTaggedObject( 3, DERInteger.valueOf( message.getClientMicroSecond().intValue() ) ) );
98 }
99
100 sequence.add( new DERTaggedObject( 4, KerberosTimeEncoder.encode( message.getServerTime() ) ) );
101
102 sequence.add( new DERTaggedObject( 5, DERInteger.valueOf( message.getServerMicroSecond() ) ) );
103
104 sequence.add( new DERTaggedObject( 6, DERInteger.valueOf( message.getErrorCode() ) ) );
105
106 if ( message.getClientPrincipal() != null )
107 {
108 sequence.add( new DERTaggedObject( 7, DERGeneralString.valueOf( message.getClientPrincipal().getRealm()
109 .toString() ) ) );
110 }
111
112 if ( message.getClientPrincipal() != null )
113 {
114 sequence.add( new DERTaggedObject( 8, PrincipalNameEncoder.encode( message.getClientPrincipal() ) ) );
115 }
116
117 sequence.add( new DERTaggedObject( 9, DERGeneralString.valueOf( message.getServerPrincipal().getRealm() ) ) );
118
119 sequence.add( new DERTaggedObject( 10, PrincipalNameEncoder.encode( message.getServerPrincipal() ) ) );
120
121 if ( message.getExplanatoryText() != null )
122 {
123 sequence.add( new DERTaggedObject( 11, DERGeneralString.valueOf( message.getExplanatoryText() ) ) );
124 }
125
126 if ( message.getExplanatoryData() != null )
127 {
128 sequence.add( new DERTaggedObject( 12, new DEROctetString( message.getExplanatoryData() ) ) );
129 }
130
131 return sequence;
132 }
133 }