| /* | |
| * 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.EncryptedData; | |
| import sun.security.krb5.Asn1Exception; | |
| import sun.security.krb5.RealmException; | |
| import sun.security.util.*; | |
| import java.util.ArrayList; | |
| import java.io.IOException; | |
| import java.math.BigInteger; | |
| /** | |
| * Implements the ASN.1 Authenticator type. | |
| * | |
| * <pre>{@code | |
| * KRB-CRED ::= [APPLICATION 22] SEQUENCE { | |
| * pvno [0] INTEGER (5), | |
| * msg-type [1] INTEGER (22), | |
| * tickets [2] SEQUENCE OF Ticket, | |
| * enc-part [3] EncryptedData -- EncKrbCredPart | |
| * } | |
| * }</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 KRBCred { | |
| public Ticket[] tickets = null; | |
| public EncryptedData encPart; | |
| private int pvno; | |
| private int msgType; | |
| public KRBCred(Ticket[] new_tickets, EncryptedData new_encPart) throws IOException { | |
| pvno = Krb5.PVNO; | |
| msgType = Krb5.KRB_CRED; | |
| if (new_tickets != null) { | |
| tickets = new Ticket[new_tickets.length]; | |
| for (int i = 0; i < new_tickets.length; i++) { | |
| if (new_tickets[i] == null) { | |
| throw new IOException("Cannot create a KRBCred"); | |
| } else { | |
| tickets[i] = (Ticket) new_tickets[i].clone(); | |
| } | |
| } | |
| } | |
| encPart = new_encPart; | |
| } | |
| public KRBCred(byte[] data) throws Asn1Exception, | |
| RealmException, KrbApErrException, IOException { | |
| init(new DerValue(data)); | |
| } | |
| public KRBCred(DerValue encoding) throws Asn1Exception, | |
| RealmException, KrbApErrException, IOException { | |
| init(encoding); | |
| } | |
| /** | |
| * Initializes an KRBCred object. | |
| * @param encoding a single DER-encoded value. | |
| * @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 KrbApErrException if the value read from the DER-encoded data | |
| * stream does not match the pre-defined value. | |
| * @exception RealmException if an error occurs while parsing a Realm object. | |
| */ | |
| private void init(DerValue encoding) throws Asn1Exception, | |
| RealmException, KrbApErrException, IOException { | |
| if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x16) | |
| || (encoding.isApplication() != true) | |
| || (encoding.isConstructed() != true)) { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| DerValue der, subDer; | |
| der = encoding.getData().getDerValue(); | |
| if (der.getTag() != DerValue.tag_Sequence) { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| subDer = der.getData().getDerValue(); | |
| if ((subDer.getTag() & 0x1F) == 0x00) { | |
| pvno = subDer.getData().getBigInteger().intValue(); | |
| if (pvno != Krb5.PVNO) { | |
| throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); | |
| } | |
| } else { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| subDer = der.getData().getDerValue(); | |
| if ((subDer.getTag() & 0x1F) == 0x01) { | |
| msgType = subDer.getData().getBigInteger().intValue(); | |
| if (msgType != Krb5.KRB_CRED) { | |
| throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); | |
| } | |
| } else { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| subDer = der.getData().getDerValue(); | |
| if ((subDer.getTag() & 0x1F) == 0x02) { | |
| DerValue subsubDer = subDer.getData().getDerValue(); | |
| if (subsubDer.getTag() != DerValue.tag_SequenceOf) { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| ArrayList<Ticket> v = new ArrayList<>(); | |
| while (subsubDer.getData().available() > 0) { | |
| v.add(new Ticket(subsubDer.getData().getDerValue())); | |
| } | |
| if (v.size() > 0) { | |
| tickets = v.toArray(new Ticket[0]); | |
| } | |
| } else { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| encPart = EncryptedData.parse(der.getData(), (byte) 0x03, false); | |
| if (der.getData().available() > 0) { | |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| } | |
| } | |
| /** | |
| * Encodes an KRBCred object. | |
| * @return the data of encoded EncAPRepPart object. | |
| * @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() throws Asn1Exception, IOException { | |
| DerOutputStream temp, bytes, out; | |
| temp = new DerOutputStream(); | |
| temp.putInteger(BigInteger.valueOf(pvno)); | |
| out = new DerOutputStream(); | |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| true, (byte) 0x00), temp); | |
| temp = new DerOutputStream(); | |
| temp.putInteger(BigInteger.valueOf(msgType)); | |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| true, (byte) 0x01), temp); | |
| temp = new DerOutputStream(); | |
| for (int i = 0; i < tickets.length; i++) { | |
| temp.write(tickets[i].asn1Encode()); | |
| } | |
| bytes = new DerOutputStream(); | |
| bytes.write(DerValue.tag_SequenceOf, temp); | |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| true, (byte) 0x02), bytes); | |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| true, (byte) 0x03), encPart.asn1Encode()); | |
| bytes = new DerOutputStream(); | |
| bytes.write(DerValue.tag_Sequence, out); | |
| out = new DerOutputStream(); | |
| out.write(DerValue.createTag(DerValue.TAG_APPLICATION, | |
| true, (byte) 0x16), bytes); | |
| return out.toByteArray(); | |
| } | |
| } |