001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020 package org.apache.directory.server.kerberos.shared.io.encoder; 021 022 023 import java.io.ByteArrayOutputStream; 024 import java.io.IOException; 025 026 import org.apache.directory.server.kerberos.shared.messages.Encodable; 027 import org.apache.directory.server.kerberos.shared.messages.value.EncryptedTimeStamp; 028 import org.apache.directory.shared.asn1.der.ASN1OutputStream; 029 import org.apache.directory.shared.asn1.der.DERInteger; 030 import org.apache.directory.shared.asn1.der.DERSequence; 031 import org.apache.directory.shared.asn1.der.DERTaggedObject; 032 033 034 /** 035 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 036 * @version $Rev: 540371 $, $Date: 2007-05-22 02:00:43 +0200 (Tue, 22 May 2007) $ 037 */ 038 public class EncryptedTimestampEncoder implements Encoder, EncoderFactory 039 { 040 public byte[] encode( Encodable encryptedTimestamp ) throws IOException 041 { 042 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 043 ASN1OutputStream aos = new ASN1OutputStream( baos ); 044 045 aos.writeObject( encodeTimestamp( ( EncryptedTimeStamp ) encryptedTimestamp ) ); 046 aos.close(); 047 048 return baos.toByteArray(); 049 } 050 051 052 public Encoder getEncoder() 053 { 054 return new EncryptedTimestampEncoder(); 055 } 056 057 058 /** 059 * PA-ENC-TS-ENC ::= SEQUENCE { 060 * patimestamp[0] KerberosTime, -- client's time 061 * pausec[1] INTEGER OPTIONAL 062 * } 063 */ 064 private DERSequence encodeTimestamp( EncryptedTimeStamp encryptedTimestamp ) 065 { 066 DERSequence sequence = new DERSequence(); 067 068 sequence.add( new DERTaggedObject( 0, KerberosTimeEncoder.encode( encryptedTimestamp.getTimeStamp() ) ) ); 069 070 if ( encryptedTimestamp.getMicroSeconds() > 0 ) 071 { 072 sequence.add( new DERTaggedObject( 1, DERInteger.valueOf( encryptedTimestamp.getMicroSeconds() ) ) ); 073 } 074 075 return sequence; 076 } 077 }