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/*
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* Portions Copyright 2000-2005 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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*
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* (C) Copyright IBM Corp. 1999 All Rights Reserved.
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* Copyright 1997 The Open Group Research Institute. All rights reserved.
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*/
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package sun.security.krb5;
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import sun.security.krb5.internal.*;
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import sun.security.krb5.internal.crypto.KeyUsage;
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import sun.security.krb5.internal.crypto.EType;
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import sun.security.util.*;
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import java.io.IOException;
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/**
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* This class encapsulates a AS-REP message that the KDC sends to the
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* client.
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*/
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public class KrbAsRep extends KrbKdcRep {
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private ASRep rep;
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private Credentials creds;
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private boolean DEBUG = Krb5.DEBUG;
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KrbAsRep(byte[] ibuf, EncryptionKey[] keys, KrbAsReq asReq) throws
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KrbException, Asn1Exception, IOException {
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if (keys == null)
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throw new KrbException(Krb5.API_INVALID_ARG);
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DerValue encoding = new DerValue(ibuf);
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ASReq req = asReq.getMessage();
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ASRep rep = null;
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try {
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rep = new ASRep(encoding);
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} catch (Asn1Exception e) {
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rep = null;
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KRBError err = new KRBError(encoding);
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String errStr = err.getErrorString();
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String eText = null; // pick up text sent by the server (if any)
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if (errStr != null && errStr.length() > 0) {
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if (errStr.charAt(errStr.length() - 1) == 0)
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eText = errStr.substring(0, errStr.length() - 1);
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else
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eText = errStr;
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}
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KrbException ke;
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if (eText == null) {
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// no text sent from server
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ke = new KrbException(err);
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} else {
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if (DEBUG) {
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System.out.println("KRBError received: " + eText);
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}
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// override default text with server text
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ke = new KrbException(err, eText);
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}
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ke.initCause(e);
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throw ke;
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}
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int encPartKeyType = rep.encPart.getEType();
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EncryptionKey dkey = EncryptionKey.findKey(encPartKeyType, keys);
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if (dkey == null) {
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throw new KrbException(Krb5.API_INVALID_ARG,
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"Cannot find key of appropriate type to decrypt AS REP - " +
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EType.toString(encPartKeyType));
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}
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byte[] enc_as_rep_bytes = rep.encPart.decrypt(dkey,
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KeyUsage.KU_ENC_AS_REP_PART);
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byte[] enc_as_rep_part = rep.encPart.reset(enc_as_rep_bytes, true);
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encoding = new DerValue(enc_as_rep_part);
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EncASRepPart enc_part = new EncASRepPart(encoding);
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rep.ticket.sname.setRealm(rep.ticket.realm);
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rep.encKDCRepPart = enc_part;
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check(req, rep);
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creds = new Credentials(
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rep.ticket,
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req.reqBody.cname,
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rep.ticket.sname,
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enc_part.key,
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enc_part.flags,
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enc_part.authtime,
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enc_part.starttime,
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enc_part.endtime,
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enc_part.renewTill,
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enc_part.caddr);
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if (DEBUG) {
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System.out.println(">>> KrbAsRep cons in KrbAsReq.getReply " +
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req.reqBody.cname.getNameString());
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}
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this.rep = rep;
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this.creds = creds;
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}
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public Credentials getCreds() {
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return creds;
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}
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// made public for Kinit
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public sun.security.krb5.internal.ccache.Credentials setCredentials() {
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return new sun.security.krb5.internal.ccache.Credentials(rep);
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}
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}
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