| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.kerberos.shared.io.encoder; |
| |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import org.apache.directory.server.kerberos.shared.messages.Encodable; |
| import org.apache.directory.server.kerberos.shared.messages.KdcReply; |
| import org.apache.directory.shared.asn1.der.ASN1OutputStream; |
| import org.apache.directory.shared.asn1.der.DERApplicationSpecific; |
| import org.apache.directory.shared.asn1.der.DERBitString; |
| import org.apache.directory.shared.asn1.der.DERGeneralString; |
| import org.apache.directory.shared.asn1.der.DERInteger; |
| import org.apache.directory.shared.asn1.der.DERSequence; |
| import org.apache.directory.shared.asn1.der.DERTaggedObject; |
| |
| |
| /** |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| public abstract class EncKdcRepPartEncoder implements Encoder |
| { |
| private int applicationCode; |
| |
| |
| protected EncKdcRepPartEncoder(int applicationCode) |
| { |
| this.applicationCode = applicationCode; |
| } |
| |
| |
| public byte[] encode( Encodable app ) throws IOException |
| { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ASN1OutputStream aos = new ASN1OutputStream( baos ); |
| |
| DERSequence initialSequence = encodeInitialSequence( ( KdcReply ) app ); |
| aos.writeObject( DERApplicationSpecific.valueOf( applicationCode, initialSequence ) ); |
| |
| return baos.toByteArray(); |
| } |
| |
| |
| /** |
| * EncKDCRepPart ::= SEQUENCE { |
| * key[0] EncryptionKey, |
| * last-req[1] LastReq, |
| * |
| * nonce[2] INTEGER, |
| * key-expiration[3] KerberosTime OPTIONAL, |
| * flags[4] TicketFlags, |
| * authtime[5] KerberosTime, |
| * starttime[6] KerberosTime OPTIONAL, |
| * endtime[7] KerberosTime, |
| * renew-till[8] KerberosTime OPTIONAL, |
| * srealm[9] Realm, |
| * sname[10] PrincipalName, |
| * caddr[11] HostAddresses OPTIONAL |
| * } |
| */ |
| protected DERSequence encodeInitialSequence( KdcReply reply ) |
| { |
| DERSequence sequence = new DERSequence(); |
| |
| sequence.add( new DERTaggedObject( 0, EncryptionKeyEncoder.encodeSequence( reply.getKey() ) ) ); |
| sequence.add( new DERTaggedObject( 1, LastRequestEncoder.encode( reply.getLastRequest() ) ) ); |
| sequence.add( new DERTaggedObject( 2, DERInteger.valueOf( reply.getNonce() ) ) ); |
| |
| // OPTIONAL |
| if ( reply.getKeyExpiration() != null ) |
| { |
| sequence.add( new DERTaggedObject( 3, KerberosTimeEncoder.encode( reply.getKeyExpiration() ) ) ); |
| } |
| |
| sequence.add( new DERTaggedObject( 4, new DERBitString( reply.getFlags().getBytes() ) ) ); |
| sequence.add( new DERTaggedObject( 5, KerberosTimeEncoder.encode( reply.getAuthTime() ) ) ); |
| |
| // OPTIONAL |
| if ( reply.getStartTime() != null ) |
| { |
| sequence.add( new DERTaggedObject( 6, KerberosTimeEncoder.encode( reply.getStartTime() ) ) ); |
| } |
| |
| sequence.add( new DERTaggedObject( 7, KerberosTimeEncoder.encode( reply.getEndTime() ) ) ); |
| |
| // OPTIONAL |
| if ( reply.getRenewTill() != null ) |
| { |
| sequence.add( new DERTaggedObject( 8, KerberosTimeEncoder.encode( reply.getRenewTill() ) ) ); |
| } |
| |
| sequence.add( new DERTaggedObject( 9, DERGeneralString.valueOf( reply.getServerRealm().toString() ) ) ); |
| sequence.add( new DERTaggedObject( 10, PrincipalNameEncoder.encode( reply.getServerPrincipal() ) ) ); |
| |
| // OPTIONAL |
| if ( reply.getClientAddresses() != null ) |
| { |
| sequence.add( new DERTaggedObject( 11, HostAddressesEncoder.encodeSequence( reply.getClientAddresses() ) ) ); |
| } |
| |
| return sequence; |
| } |
| } |