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 */ 020 021 package org.apache.directory.server.changepw.io; 022 023 024 import java.io.IOException; 025 import java.util.Enumeration; 026 027 import org.apache.directory.server.changepw.value.ChangePasswordData; 028 import org.apache.directory.server.changepw.value.ChangePasswordDataModifier; 029 import org.apache.directory.server.kerberos.shared.io.decoder.PrincipalNameDecoder; 030 import org.apache.directory.shared.asn1.der.ASN1InputStream; 031 import org.apache.directory.shared.asn1.der.DEREncodable; 032 import org.apache.directory.shared.asn1.der.DERGeneralString; 033 import org.apache.directory.shared.asn1.der.DEROctetString; 034 import org.apache.directory.shared.asn1.der.DERSequence; 035 import org.apache.directory.shared.asn1.der.DERTaggedObject; 036 037 038 /** 039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 040 * @version $Rev: 540371 $, $Date: 2007-05-22 02:00:43 +0200 (Tue, 22 May 2007) $ 041 */ 042 public class ChangePasswordDataDecoder 043 { 044 /** 045 * Decodes bytes into a ChangePasswordData. 046 * 047 * @param encodedChangePasswdData 048 * @return The {@link ChangePasswordData}. 049 * @throws IOException 050 */ 051 public ChangePasswordData decodeChangePasswordData( byte[] encodedChangePasswdData ) throws IOException 052 { 053 ASN1InputStream ais = new ASN1InputStream( encodedChangePasswdData ); 054 055 DERSequence sequence = ( DERSequence ) ais.readObject(); 056 057 return decodeChangePasswdData( sequence ); 058 } 059 060 061 protected ChangePasswordData decodeChangePasswdData( DERSequence sequence ) 062 { 063 ChangePasswordDataModifier modifier = new ChangePasswordDataModifier(); 064 065 for ( Enumeration e = sequence.getObjects(); e.hasMoreElements(); ) 066 { 067 DERTaggedObject object = ( ( DERTaggedObject ) e.nextElement() ); 068 int tag = object.getTagNo(); 069 DEREncodable derObject = object.getObject(); 070 switch ( tag ) 071 { 072 case 0: 073 DEROctetString tag0 = ( DEROctetString ) derObject; 074 modifier.setNewPassword( tag0.getOctets() ); 075 break; 076 case 1: 077 DERSequence tag1 = ( DERSequence ) derObject; 078 modifier.setTargetName( PrincipalNameDecoder.decode( tag1 ) ); 079 break; 080 case 2: 081 DERGeneralString tag2 = ( DERGeneralString ) derObject; 082 modifier.setTargetRealm( tag2.getString() ); 083 break; 084 default: 085 break; 086 } 087 } 088 089 return modifier.getChangePasswdData(); 090 } 091 }