/*
* 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.harmony.auth.internal.kerberos.v5;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Date;
import javax.crypto.SecretKey;
import org.apache.harmony.security.asn1.ASN1Any;
import org.apache.harmony.security.asn1.ASN1BitString;
import org.apache.harmony.security.asn1.ASN1Constants;
import org.apache.harmony.security.asn1.ASN1Explicit;
import org.apache.harmony.security.asn1.ASN1Integer;
import org.apache.harmony.security.asn1.ASN1OctetString;
import org.apache.harmony.security.asn1.ASN1Sequence;
import org.apache.harmony.security.asn1.ASN1SequenceOf;
import org.apache.harmony.security.asn1.ASN1StringType;
import org.apache.harmony.security.asn1.ASN1Type;
import org.apache.harmony.security.asn1.BerInputStream;
import org.apache.harmony.security.asn1.BitString;
import org.apache.harmony.security.asn1.DerInputStream;
/**
* @see http://www.ietf.org/rfc/rfc4120.txt
*/
public class KDCReply {
/**
* Authentication Service request message type
*/
public static final int AS_REP = 11;
/**
* Ticket-Granting Service request message type
*/
public static final int TGS_REP = 13;
// type of a protocol message: AS_REP or TGS_REP
private final int msgType;
private final PrincipalName cname;
private final String crealm;
private final Ticket ticket;
private final EncryptedData encPart;
//
//
//
private Date authtime;
private Date starttime;
private Date endtime;
private Date renewtill;
private String srealm;
private PrincipalName sname;
// session key
private EncryptionKey key;
private BitString flags;
/**
* <pre>
* KDC-REP ::= SEQUENCE {
* pvno [0] INTEGER (5),
* msg-type [1] INTEGER (11 -- AS -- | 13 -- TGS --),
* padata [2] SEQUENCE OF PA-DATA OPTIONAL
* -- NOTE: not empty --,
* crealm [3] Realm,
* cname [4] PrincipalName,
* ticket [5] Ticket,
* enc-part [6] EncryptedData
* -- EncASRepPart or EncTGSRepPart,
* -- as appropriate
* }
* </pre>
*/
static final ASN1Sequence KDC_REP_ASN1 = new ASN1Sequence(new ASN1Type[] {
new ASN1Explicit(0, ASN1Integer.getInstance()), // pvno
new ASN1Explicit(1, ASN1Integer.getInstance()), // msg-type
new ASN1Explicit(2, new ASN1SequenceOf(ASN1Any.getInstance())),
// TODO should we define Realm type?
new ASN1Explicit(3, ASN1StringType.GENERALSTRING), // crealm
new ASN1Explicit(4, PrincipalName.ASN1), // cname
new ASN1Explicit(5, Ticket.TICKET_ASN1), // ticket
new ASN1Explicit(6, EncryptedData.ASN1), // enc-part
}) {
{
setOptional(2); // padata
}
@Override
protected Object getDecodedObject(BerInputStream in) throws IOException {
final Object[] values = (Object[]) in.content;
return new KDCReply(ASN1Integer.toIntValue(values[1]),
(String) values[3], (PrincipalName) values[4],
(Ticket) values[5], (EncryptedData) values[6]);
}
@Override
protected void getValues(Object object, Object[] values) {
throw new RuntimeException(); // FIXME message
}
};
public static final ASN1Explicit AS_REP_ASN1 = new ASN1Explicit(
ASN1Constants.CLASS_APPLICATION, AS_REP, KDC_REP_ASN1);
private static final ASN1SequenceOf LAST_REQ = new ASN1SequenceOf(
new ASN1Sequence(new ASN1Type[] {
// TODO should we define Int32 type?
new ASN1Explicit(0, ASN1Integer.getInstance()), // lr-type
new ASN1Explicit(1, KerberosTime.getASN1()), // lr-value
}));
private static final ASN1Sequence HOST_ADDRESS = new ASN1Sequence(
new ASN1Type[] {
// TODO should we define Int32 type?
new ASN1Explicit(0, ASN1Integer.getInstance()), // addr-type
new ASN1Explicit(1, ASN1OctetString.getInstance()), // address
});
private static final ASN1Sequence ENC_KDC_REP_PART = new ASN1Sequence(
new ASN1Type[] { new ASN1Explicit(0, EncryptionKey.ASN1), // key
new ASN1Explicit(1, LAST_REQ), // last-req
// TODO should we define UInt32 type?
new ASN1Explicit(2, ASN1Integer.getInstance()), // nonce
new ASN1Explicit(3, KerberosTime.getASN1()), // key-expiration
// TODO TicketFlags type?
new ASN1Explicit(4, ASN1BitString.getInstance()), // flags
new ASN1Explicit(5, KerberosTime.getASN1()), // authtime
new ASN1Explicit(6, KerberosTime.getASN1()), // starttime
new ASN1Explicit(7, KerberosTime.getASN1()), // endtime
new ASN1Explicit(8, KerberosTime.getASN1()), // renew-till
// TODO should we define Realm type?
new ASN1Explicit(9, ASN1StringType.GENERALSTRING), // srealm
new ASN1Explicit(10, PrincipalName.ASN1), // sname
new ASN1Explicit(11, HOST_ADDRESS), // caddr
}) {
{
setOptional(3); // key-expiration
setOptional(6); // starttime
setOptional(8); // renew-till
setOptional(11); // caddr
}
};
// TODO: create const ENC_AS_REP_PART=25
private static final ASN1Explicit ENC_AS_REP_PART = new ASN1Explicit(
ASN1Constants.CLASS_APPLICATION, 25, ENC_KDC_REP_PART);
private KDCReply(int msgType, String crealm, PrincipalName cname,
Ticket ticket, EncryptedData encPart) {
this.msgType = msgType;
this.cname = cname;
this.crealm = crealm;
this.ticket = ticket;
this.encPart = encPart;
}
//
//
//
public void decrypt(SecretKey key) throws IOException {
final DerInputStream in = new DerInputStream(new ByteArrayInputStream(
encPart.decrypt(key)));
final Object[] values = (Object[]) ENC_AS_REP_PART.decode(in);
this.key = (EncryptionKey) values[0];
flags = (BitString) values[4];
authtime = (Date) values[5];
starttime = (Date) values[6];
endtime = (Date) values[7];
renewtill = (Date) values[8];
srealm = (String) values[9];
sname = (PrincipalName) values[10];
}
public Date getAuthtime() {
return authtime;
}
public PrincipalName getCname() {
return cname;
}
public String getCrealm() {
return crealm;
}
public EncryptedData getEncPart() {
return encPart;
}
public Date getEndtime() {
return endtime;
}
public BitString getFlags() {
return flags;
}
public EncryptionKey getKey() {
return key;
}
public int getMsgtype() {
return msgType;
}
public Date getRenewtill() {
return renewtill;
}
public PrincipalName getSname() {
return sname;
}
public String getSrealm() {
return srealm;
}
public Date getStarttime() {
return starttime;
}
public Ticket getTicket() {
return ticket;
}
}