| /* |
| * 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.Checksum; |
| import sun.security.krb5.Asn1Exception; |
| import sun.security.krb5.RealmException; |
| import sun.security.util.*; |
| import java.io.IOException; |
| import java.math.BigInteger; |
| |
| /** |
| * Implements the ASN.1 KRBSafe type. |
| * |
| * <pre>{@code |
| * KRB-SAFE ::= [APPLICATION 20] SEQUENCE { |
| * pvno [0] INTEGER (5), |
| * msg-type [1] INTEGER (20), |
| * safe-body [2] KRB-SAFE-BODY, |
| * cksum [3] Checksum |
| * } |
| * }</pre> |
| * |
| * <p> |
| * This definition reflects the Network Working Group RFC 4120 |
| * specifications available at |
| * <a href="http://www.ietf.org/rfc/rfc4120.txt"> |
| * http://www.ietf.org/rfc/rfc4120.txt</a>. |
| */ |
| |
| public class KRBSafe { |
| public int pvno; |
| public int msgType; |
| public KRBSafeBody safeBody; |
| public Checksum cksum; |
| |
| public KRBSafe(KRBSafeBody new_safeBody, Checksum new_cksum) { |
| pvno = Krb5.PVNO; |
| msgType = Krb5.KRB_SAFE; |
| safeBody = new_safeBody; |
| cksum = new_cksum; |
| } |
| |
| public KRBSafe(byte[] data) throws Asn1Exception, |
| RealmException, KrbApErrException, IOException { |
| init(new DerValue(data)); |
| } |
| |
| public KRBSafe(DerValue encoding) throws Asn1Exception, |
| RealmException, KrbApErrException, IOException { |
| init(encoding); |
| } |
| |
| /** |
| * Initializes an KRBSafe 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 RealmException if an error occurs while parsing a Realm object. |
| * @exception KrbApErrException if the value read from the DER-encoded data |
| * stream does not match the pre-defined value. |
| */ |
| private void init(DerValue encoding) throws Asn1Exception, |
| RealmException, KrbApErrException, IOException { |
| DerValue der, subDer; |
| if (((encoding.getTag() & (byte)0x1F) != (byte)0x14) |
| || (encoding.isApplication() != true) |
| || (encoding.isConstructed() != true)) |
| 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() & 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_SAFE) |
| throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); |
| } |
| |
| else |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| safeBody = KRBSafeBody.parse(der.getData(), (byte)0x02, false); |
| cksum = Checksum.parse(der.getData(), (byte)0x03, false); |
| if (der.getData().available() > 0) |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| |
| /** |
| * Encodes an KRBSafe object. |
| * @return byte array of encoded KRBSafe 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 = new DerOutputStream(); |
| DerOutputStream bytes = new DerOutputStream(); |
| temp.putInteger(BigInteger.valueOf(pvno)); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); |
| temp = new DerOutputStream(); |
| temp.putInteger(BigInteger.valueOf(msgType)); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), safeBody.asn1Encode()); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), cksum.asn1Encode()); |
| temp = new DerOutputStream(); |
| temp.write(DerValue.tag_Sequence, bytes); |
| bytes = new DerOutputStream(); |
| bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte)0x14), temp); |
| return bytes.toByteArray(); |
| } |
| } |