alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (KrbAsReq.java)

This example Java source code file (KrbAsReq.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

asreq, debug, encrypteddata, ioexception, kdcoptions, kdcreqbody, kerberostime, krbasreq, krbexception, padata, paenctsenc, principalname, string

The KrbAsReq.java Java example source code

/*
 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
 * 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;

import sun.security.krb5.internal.*;
import sun.security.krb5.internal.crypto.Nonce;
import sun.security.krb5.internal.crypto.KeyUsage;
import java.io.IOException;

/**
 * This class encapsulates the KRB-AS-REQ message that the client
 * sends to the KDC.
 */
public class KrbAsReq {
    private ASReq asReqMessg;

    private boolean DEBUG = Krb5.DEBUG;

    /**
     * Constructs an AS-REQ message.
     */
                                                // Can be null? has default?
    public KrbAsReq(EncryptionKey pakey,        // ok
                      KDCOptions options,       // ok, new KDCOptions()
                      PrincipalName cname,      // NO and must have realm
                      PrincipalName sname,      // ok, krgtgt@CREALM
                      KerberosTime from,        // ok
                      KerberosTime till,        // ok, will use
                      KerberosTime rtime,       // ok
                      int[] eTypes,             // NO
                      HostAddresses addresses   // ok
                      )
            throws KrbException, IOException {

        if (options == null) {
            options = new KDCOptions();
        }

        // check if they are valid arguments. The optional fields should be
        // consistent with settings in KDCOptions. Mar 17 2000
        if (options.get(KDCOptions.FORWARDED) ||
            options.get(KDCOptions.PROXY) ||
            options.get(KDCOptions.ENC_TKT_IN_SKEY) ||
            options.get(KDCOptions.RENEW) ||
            options.get(KDCOptions.VALIDATE)) {
            // this option is only specified in a request to the
            // ticket-granting server
            throw new KrbException(Krb5.KRB_AP_ERR_REQ_OPTIONS);
        }
        if (options.get(KDCOptions.POSTDATED)) {
            //  if (from == null)
            //          throw new KrbException(Krb5.KRB_AP_ERR_REQ_OPTIONS);
        } else {
            if (from != null)  from = null;
        }
        if (options.get(KDCOptions.RENEWABLE)) {
            //  if (rtime == null)
            //          throw new KrbException(Krb5.KRB_AP_ERR_REQ_OPTIONS);
        } else {
            if (rtime != null)  rtime = null;
        }

        PAData[] paData = null;
        if (pakey != null) {
            PAEncTSEnc ts = new PAEncTSEnc();
            byte[] temp = ts.asn1Encode();
            EncryptedData encTs = new EncryptedData(pakey, temp,
                KeyUsage.KU_PA_ENC_TS);
            paData = new PAData[1];
            paData[0] = new PAData( Krb5.PA_ENC_TIMESTAMP,
                                    encTs.asn1Encode());
        }

        if (cname.getRealm() == null) {
            throw new RealmException(Krb5.REALM_NULL,
                                     "default realm not specified ");
        }

        if (DEBUG) {
            System.out.println(">>> KrbAsReq creating message");
        }

        // check to use addresses in tickets
        if (addresses == null && Config.getInstance().useAddresses()) {
            addresses = HostAddresses.getLocalAddresses();
        }

        if (sname == null) {
            String realm = cname.getRealmAsString();
            sname = PrincipalName.tgsService(realm, realm);
        }

        if (till == null) {
            till = new KerberosTime(0); // Choose KDC maximum allowed
        }

        // enc-authorization-data and additional-tickets never in AS-REQ
        KDCReqBody kdc_req_body = new KDCReqBody(options,
                                                 cname,
                                                 sname,
                                                 from,
                                                 till,
                                                 rtime,
                                                 Nonce.value(),
                                                 eTypes,
                                                 addresses,
                                                 null,
                                                 null);

        asReqMessg = new ASReq(
                         paData,
                         kdc_req_body);
    }

    byte[] encoding() throws IOException, Asn1Exception {
        return asReqMessg.asn1Encode();
    }

    // Used by KrbAsRep to validate AS-REP
    ASReq getMessage() {
        return asReqMessg;
    }
}

Other Java examples (source code examples)

Here is a short list of links related to this Java KrbAsReq.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2024 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.