/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
*
* (C) Copyright IBM Corp. 1999 All Rights Reserved.
* Copyright 1997 The Open Group Research Institute. All rights reserved.
*/
package sun.security.krb5.internal;
import sun.security.krb5.*;
import sun.security.util.*;
import java.util.Vector;
import java.io.IOException;
import java.math.BigInteger;
/**
* Implements the ASN.1 KDC-REQ-BODY type.
*
* <pre>{@code
* KDC-REQ-BODY ::= SEQUENCE {
* kdc-options [0] KDCOptions,
* cname [1] PrincipalName OPTIONAL
* -- Used only in AS-REQ --,
* realm [2] Realm
* -- Server's realm
* -- Also client's in AS-REQ --,
* sname [3] PrincipalName OPTIONAL,
* from [4] KerberosTime OPTIONAL,
* till [5] KerberosTime,
* rtime [6] KerberosTime OPTIONAL,
* nonce [7] UInt32,
* etype [8] SEQUENCE OF Int32 -- EncryptionType
* -- in preference order --,
* addresses [9] HostAddresses OPTIONAL,
* enc-authorization-data [10] EncryptedData OPTIONAL
* -- AuthorizationData --,
* additional-tickets [11] SEQUENCE OF Ticket OPTIONAL
* -- NOTE: not empty
* }
* }</pre>
*
* <p>
* This definition reflects the Network Working Group RFC 4120
* specification available at
* <a href="http://www.ietf.org/rfc/rfc4120.txt">
* http://www.ietf.org/rfc/rfc4120.txt</a>.
*/
public class KDCReqBody {
public KDCOptions kdcOptions;
public PrincipalName cname; //optional in ASReq only
public PrincipalName sname; //optional
public KerberosTime from; //optional
public KerberosTime till;
public KerberosTime rtime; //optional
public HostAddresses addresses; //optional
private int nonce;
private int[] eType = null; //a sequence; not optional
private EncryptedData encAuthorizationData; //optional
private Ticket[] additionalTickets; //optional
public KDCReqBody(
KDCOptions new_kdcOptions,
PrincipalName new_cname, //optional in ASReq only
PrincipalName new_sname, //optional
KerberosTime new_from, //optional
KerberosTime new_till,
KerberosTime new_rtime, //optional
int new_nonce,
int[] new_eType, //a sequence; not optional
HostAddresses new_addresses, //optional
EncryptedData new_encAuthorizationData, //optional
Ticket[] new_additionalTickets //optional
) throws IOException {
kdcOptions = new_kdcOptions;
cname = new_cname;
sname = new_sname;
from = new_from;
till = new_till;
rtime = new_rtime;
nonce = new_nonce;
if (new_eType != null) {
eType = new_eType.clone();
}
addresses = new_addresses;
encAuthorizationData = new_encAuthorizationData;
if (new_additionalTickets != null) {
additionalTickets = new Ticket[new_additionalTickets.length];
for (int i = 0; i < new_additionalTickets.length; i++) {
if (new_additionalTickets[i] == null) {
throw new IOException("Cannot create a KDCReqBody");
} else {
additionalTickets[i] = (Ticket)new_additionalTickets[i].clone();
}
}
}
}
/**
* Constructs a KDCReqBody object.
* @param encoding a DER-encoded data.
* @param msgType an int indicating whether it's KRB_AS_REQ or KRB_TGS_REQ type.
* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
* @exception IOException if an I/O error occurs while reading encoded data.
* @exception RealmException if an error occurs while constructing a Realm object from the encoded data.
*
*/
public KDCReqBody(DerValue encoding, int msgType)
throws Asn1Exception, RealmException, KrbException, IOException {
DerValue der, subDer;
addresses = null;
encAuthorizationData = null;
additionalTickets = null;
if (encoding.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
kdcOptions = KDCOptions.parse(encoding.getData(), (byte)0x00, false);
// cname only appears in AS-REQ and it shares the realm field with
// sname. This is the only place where realm comes after the name.
// We first give cname a fake realm and reassign it the correct
// realm after the realm field is read.
cname = PrincipalName.parse(encoding.getData(), (byte)0x01, true,
new Realm("PLACEHOLDER"));
if ((msgType != Krb5.KRB_AS_REQ) && (cname != null)) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
Realm realm = Realm.parse(encoding.getData(), (byte)0x02, false);
if (cname != null) {
cname = new PrincipalName(
cname.getNameType(), cname.getNameStrings(), realm);
}
sname = PrincipalName.parse(encoding.getData(), (byte)0x03, true, realm);
from = KerberosTime.parse(encoding.getData(), (byte)0x04, true);
till = KerberosTime.parse(encoding.getData(), (byte)0x05, false);
rtime = KerberosTime.parse(encoding.getData(), (byte)0x06, true);
der = encoding.getData().getDerValue();
if ((der.getTag() & (byte)0x1F) == (byte)0x07) {
nonce = der.getData().getBigInteger().intValue();
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
Vector<Integer> v = new Vector<>();
if ((der.getTag() & (byte)0x1F) == (byte)0x08) {
subDer = der.getData().getDerValue();
if (subDer.getTag() == DerValue.tag_SequenceOf) {
while(subDer.getData().available() > 0) {
v.addElement(subDer.getData().getBigInteger().intValue());
}
eType = new int[v.size()];
for (int i = 0; i < v.size(); i++) {
eType[i] = v.elementAt(i);
}
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
if (encoding.getData().available() > 0) {
addresses = HostAddresses.parse(encoding.getData(), (byte)0x09, true);
}
if (encoding.getData().available() > 0) {
encAuthorizationData = EncryptedData.parse(encoding.getData(), (byte)0x0A, true);
}
if (encoding.getData().available() > 0) {
Vector<Ticket> tempTickets = new Vector<>();
der = encoding.getData().getDerValue();
if ((der.getTag() & (byte)0x1F) == (byte)0x0B) {
subDer = der.getData().getDerValue();
if (subDer.getTag() == DerValue.tag_SequenceOf) {
while (subDer.getData().available() > 0) {
tempTickets.addElement(new Ticket(subDer.getData().getDerValue()));
}
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
if (tempTickets.size() > 0) {
additionalTickets = new Ticket[tempTickets.size()];
tempTickets.copyInto(additionalTickets);
}
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
if (encoding.getData().available() > 0) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
/**
* Encodes this object to an OutputStream.
*
* @return an byte array of encoded data.
* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
* @exception IOException if an I/O error occurs while reading encoded data.
*
*/
public byte[] asn1Encode(int msgType) throws Asn1Exception, IOException {
Vector<DerValue> v = new Vector<>();
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), kdcOptions.asn1Encode()));
if (msgType == Krb5.KRB_AS_REQ) {
if (cname != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), cname.asn1Encode()));
}
}
if (sname != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), sname.getRealm().asn1Encode()));
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), sname.asn1Encode()));
} else if (cname != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), cname.getRealm().asn1Encode()));
}
if (from != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x04), from.asn1Encode()));
}
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x05), till.asn1Encode()));
if (rtime != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x06), rtime.asn1Encode()));
}
DerOutputStream temp = new DerOutputStream();
temp.putInteger(BigInteger.valueOf(nonce));
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x07), temp.toByteArray()));
//revisit, if empty eType sequences are allowed
temp = new DerOutputStream();
for (int i = 0; i < eType.length; i++) {
temp.putInteger(BigInteger.valueOf(eType[i]));
}
DerOutputStream eTypetemp = new DerOutputStream();
eTypetemp.write(DerValue.tag_SequenceOf, temp);
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x08), eTypetemp.toByteArray()));
if (addresses != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x09), addresses.asn1Encode()));
}
if (encAuthorizationData != null) {
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x0A), encAuthorizationData.asn1Encode()));
}
if (additionalTickets != null && additionalTickets.length > 0) {
temp = new DerOutputStream();
for (int i = 0; i < additionalTickets.length; i++) {
temp.write(additionalTickets[i].asn1Encode());
}
DerOutputStream ticketsTemp = new DerOutputStream();
ticketsTemp.write(DerValue.tag_SequenceOf, temp);
v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x0B), ticketsTemp.toByteArray()));
}
DerValue[] der = new DerValue[v.size()];
v.copyInto(der);
temp = new DerOutputStream();
temp.putSequence(der);
return temp.toByteArray();
}
public int getNonce() {
return nonce;
}
}