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 package org.apache.directory.shared.kerberos.messages;
21
22
23 import java.nio.ByteBuffer;
24
25 import org.apache.directory.api.asn1.EncoderException;
26 import org.apache.directory.api.asn1.ber.tlv.TLV;
27 import org.apache.directory.shared.kerberos.KerberosConstants;
28 import org.apache.directory.shared.kerberos.KerberosMessageType;
29 import org.apache.directory.shared.kerberos.KerberosTime;
30 import org.apache.directory.shared.kerberos.components.KdcRep;
31 import org.apache.directory.shared.kerberos.components.PrincipalName;
32 import org.apache.directory.shared.kerberos.flags.TicketFlags;
33
34
35 /**
36 * AS-REQ message. It's just a KDC-REP message with a message type set to 11.
37 * It will store the object described by the ASN.1 grammar :
38 * <pre>
39 * AS-REP ::= [APPLICATION 11] <KDC-RE>P
40 * </pre>
41 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
42 */
43 public class AsRep extends KdcRep
44 {
45 // Storage for computed lengths
46 private int kdcRepLength;
47 private int asRepLength;
48
49
50 /**
51 * Creates a new instance of AS-REP.
52 */
53 public AsRep()
54 {
55 super( KerberosMessageType.AS_REP );
56 }
57
58
59 /**
60 * Returns the end {@link KerberosTime}.
61 *
62 * @return The end {@link KerberosTime}.
63 */
64 public KerberosTime getEndTime()
65 {
66 return encKdcRepPart.getEndTime();
67 }
68
69
70 /**
71 * Returns the {@link TicketFlags}.
72 *
73 * @return The {@link TicketFlags}.
74 */
75 public TicketFlags getFlags()
76 {
77 return encKdcRepPart.getFlags();
78 }
79
80
81 /**
82 * Returns the nonce.
83 *
84 * @return The nonce.
85 */
86 public int getNonce()
87 {
88 return encKdcRepPart.getNonce();
89 }
90
91
92 /**
93 * Returns the renew till {@link KerberosTime}.
94 *
95 * @return The renew till {@link KerberosTime}.
96 */
97 public KerberosTime getRenewTill()
98 {
99 return encKdcRepPart.getRenewTill();
100 }
101
102
103 /**
104 * Returns the start {@link KerberosTime}.
105 *
106 * @return The start {@link KerberosTime}.
107 */
108 public KerberosTime getStartTime()
109 {
110 return encKdcRepPart.getStartTime();
111 }
112
113
114 /**
115 * Returns the server {@link PrincipalName}.
116 *
117 * @return The server {@link PrincipalName}.
118 */
119 public PrincipalName getSName()
120 {
121 return encKdcRepPart.getSName();
122 }
123
124
125 /**
126 * Compute the AS-REP length
127 * <pre>
128 * AS-REP :
129 *
130 * 0x6B L1 AS-REP message
131 * |
132 * +--> 0x30 L2 KDC-REP sequence
133 * </pre>
134 */
135 @Override
136 public int computeLength()
137 {
138 kdcRepLength = super.computeLength();
139 asRepLength = 1 + TLV.getNbBytes( kdcRepLength ) + kdcRepLength;
140
141 return asRepLength;
142 }
143
144
145 /**
146 * Encode the AS-REP component
147 *
148 * @param buffer The buffer containing the encoded result
149 * @return The encoded component
150 * @throws org.apache.directory.api.asn1.EncoderException If the encoding failed
151 */
152 @Override
153 public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException
154 {
155 if ( buffer == null )
156 {
157 buffer = ByteBuffer.allocate( computeLength() );
158 }
159
160 // The AS-REP SEQ Tag
161 buffer.put( ( byte ) KerberosConstants.AS_REP_TAG );
162 buffer.put( TLV.getBytes( kdcRepLength ) );
163
164 // The KDC-REP --------------------------------------------------------
165 super.encode( buffer );
166
167 return buffer;
168 }
169 }