Java example source code file (Krb5NameEquals.java)

This example Java source code file (Krb5NameEquals.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

exception, gssmanager, gssname, krb5, krb5nameequals, mech, name_str1, name_str2, oid, string

The Krb5NameEquals.java Java example source code

/*
 * Copyright (c) 2007, 2011, 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.
 *
 * 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.
 */

/*
 * @bug 4634392
 * @summary JDK code doesn't respect contract for equals and hashCode
 * @author Andrew Fan
 */

import org.ietf.jgss.*;

public class Krb5NameEquals {

    private static String NAME_STR1 = "service@localhost";
    private static String NAME_STR2 = "service2@localhost";
    private static final Oid MECH;

    static {
        Oid temp = null;
        try {
            temp = new Oid("1.2.840.113554.1.2.2"); // KRB5
        } catch (Exception e) {
            // should never happen
        }
        MECH = temp;
    }

    public static void main(String[] argv) throws Exception {
        GSSManager mgr = GSSManager.getInstance();

        boolean result = true;
        // Create GSSName and check their equals(), hashCode() impl
        GSSName name1 = mgr.createName(NAME_STR1,
            GSSName.NT_HOSTBASED_SERVICE, MECH);
        GSSName name2 = mgr.createName(NAME_STR2,
            GSSName.NT_HOSTBASED_SERVICE, MECH);
        GSSName name3 = mgr.createName(NAME_STR1,
            GSSName.NT_HOSTBASED_SERVICE, MECH);

        if (!name1.equals(name1) || !name1.equals(name3) ||
            !name1.equals((Object) name1) ||
            !name1.equals((Object) name3)) {
            System.out.println("Error: should be the same name");
            result = false;
        } else if (name1.hashCode() != name3.hashCode()) {
            System.out.println("Error: should have same hash");
            result = false;
        }

        if (name1.equals(name2) || name1.equals((Object) name2)) {
            System.out.println("Error: should be different names");
            result = false;
        }
        if (result) {
            System.out.println("Done");
        } else System.exit(1);
    }
}