| /* |
| * 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 java.util.Vector; |
| import sun.security.util.*; |
| import java.io.IOException; |
| import java.math.BigInteger; |
| |
| /** |
| * Implements the ASN.1 KRB_KDC_REQ type. |
| * |
| * <xmp> |
| * KDC-REQ ::= SEQUENCE { |
| * -- NOTE: first tag is [1], not [0] |
| * pvno [1] INTEGER (5) , |
| * msg-type [2] INTEGER (10 -- AS -- | 12 -- TGS --), |
| * padata [3] SEQUENCE OF PA-DATA OPTIONAL |
| * -- NOTE: not empty --, |
| * req-body [4] KDC-REQ-BODY |
| * } |
| * </xmp> |
| * |
| * <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 KDCReq { |
| |
| public KDCReqBody reqBody; |
| private int pvno; |
| private int msgType; |
| private PAData[] pAData = null; //optional |
| |
| public KDCReq(PAData[] new_pAData, KDCReqBody new_reqBody, |
| int req_type) throws IOException { |
| pvno = Krb5.PVNO; |
| msgType = req_type; |
| if (new_pAData != null) { |
| pAData = new PAData[new_pAData.length]; |
| for (int i = 0; i < new_pAData.length; i++) { |
| if (new_pAData[i] == null) { |
| throw new IOException("Cannot create a KDCRep"); |
| } else { |
| pAData[i] = (PAData) new_pAData[i].clone(); |
| } |
| } |
| } |
| reqBody = new_reqBody; |
| } |
| |
| public KDCReq() { |
| } |
| |
| public KDCReq(byte[] data, int req_type) throws Asn1Exception, |
| IOException, KrbException { |
| init(new DerValue(data), req_type); |
| } |
| |
| /** |
| * Creates an KDCReq object from a DerValue object and asn1 type. |
| * |
| * @param der a DER value of an KDCReq object. |
| * @param req_type a encoded asn1 type 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. |
| * @exceptoin KrbErrException |
| */ |
| public KDCReq(DerValue der, int req_type) throws Asn1Exception, |
| IOException, KrbException { |
| init(der, req_type); |
| } |
| |
| /** |
| * Initializes a KDCReq object from a DerValue. The DER encoding |
| * must be in the format specified by the KRB_KDC_REQ ASN.1 notation. |
| * |
| * @param encoding a DER-encoded KDCReq object. |
| * @param req_type 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 KrbException if an error occurs while constructing a Realm object, |
| * or a Krb object from DER-encoded data. |
| */ |
| protected void init(DerValue encoding, int req_type) throws Asn1Exception, |
| IOException, KrbException { |
| DerValue der, subDer; |
| BigInteger bint; |
| if ((encoding.getTag() & 0x1F) != req_type) { |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| der = encoding.getData().getDerValue(); |
| if (der.getTag() != DerValue.tag_Sequence) { |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| subDer = der.getData().getDerValue(); |
| if ((subDer.getTag() & 0x01F) == 0x01) { |
| bint = subDer.getData().getBigInteger(); |
| this.pvno = bint.intValue(); |
| if (this.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() & 0x01F) == 0x02) { |
| bint = subDer.getData().getBigInteger(); |
| this.msgType = bint.intValue(); |
| if (this.msgType != req_type) { |
| throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); |
| } |
| } else { |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| if ((der.getData().peekByte() & 0x1F) == 0x03) { |
| subDer = der.getData().getDerValue(); |
| DerValue subsubDer = subDer.getData().getDerValue(); |
| if (subsubDer.getTag() != DerValue.tag_SequenceOf) { |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| Vector<PAData> v = new Vector<>(); |
| while (subsubDer.getData().available() > 0) { |
| v.addElement(new PAData(subsubDer.getData().getDerValue())); |
| } |
| if (v.size() > 0) { |
| pAData = new PAData[v.size()]; |
| v.copyInto(pAData); |
| } |
| } else { |
| pAData = null; |
| } |
| subDer = der.getData().getDerValue(); |
| if ((subDer.getTag() & 0x01F) == 0x04) { |
| DerValue subsubDer = subDer.getData().getDerValue(); |
| reqBody = new KDCReqBody(subsubDer, msgType); |
| } else { |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| } |
| |
| /** |
| * Encodes this object to a byte array. |
| * |
| * @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() 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) 0x01), temp); |
| temp = new DerOutputStream(); |
| temp.putInteger(BigInteger.valueOf(msgType)); |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| true, (byte) 0x02), temp); |
| if (pAData != null && pAData.length > 0) { |
| temp = new DerOutputStream(); |
| for (int i = 0; i < pAData.length; i++) { |
| temp.write(pAData[i].asn1Encode()); |
| } |
| bytes = new DerOutputStream(); |
| bytes.write(DerValue.tag_SequenceOf, temp); |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| true, (byte) 0x03), bytes); |
| } |
| out.write(DerValue.createTag(DerValue.TAG_CONTEXT, |
| true, (byte) 0x04), reqBody.asn1Encode(msgType)); |
| bytes = new DerOutputStream(); |
| bytes.write(DerValue.tag_Sequence, out); |
| out = new DerOutputStream(); |
| out.write(DerValue.createTag(DerValue.TAG_APPLICATION, |
| true, (byte) msgType), bytes); |
| return out.toByteArray(); |
| } |
| |
| public byte[] asn1EncodeReqBody() throws Asn1Exception, IOException { |
| return reqBody.asn1Encode(msgType); |
| } |
| } |
