/*

 * 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.

 */

/*

 * @test

 * @compile -XDignore.symbol.file TwoPrinces.java

 */

import java.io.File;

import java.io.FileOutputStream;

import sun.security.jgss.GSSUtil;

import sun.security.krb5.Config;

public class TwoPrinces {

    public static void main(String[] args)

            throws Exception {

        KDC k1 = KDC.create("R1");

        k1.addPrincipal("u1", "hello".toCharArray());

        k1.addPrincipalRandKey("krbtgt/R1");

        k1.addPrincipalRandKey("host/same.host");

        KDC k2 = KDC.create("R2");

        k2.addPrincipal("u2", "hello".toCharArray());

        k2.addPrincipalRandKey("krbtgt/R2");

        k2.addPrincipalRandKey("host/same.host");

        System.setProperty("java.security.krb5.conf", "krb5.conf");

        // R1 is the default realm now

        KDC.saveConfig("krb5.conf", k1, k2);

        Config.refresh();

        k1.writeKtab("ktab1");

        k2.writeKtab("ktab2");

        // A JAAS config file with 2 Krb5LoginModules, after commit, the

        // subject with have principals and keytabs from both sides

        System.setProperty("java.security.auth.login.config", "jaas.conf");

        File f = new File("jaas.conf");

        FileOutputStream fos = new FileOutputStream(f);

        fos.write((

                "me {\n"

                + "  com.sun.security.auth.module.Krb5LoginModule required"

                + "    isInitiator=true principal=\"host/same.host@R1\""

                + "    useKeyTab=true keyTab=ktab1 storeKey=true;\n"

                + "  com.sun.security.auth.module.Krb5LoginModule required"

                + "    isInitiator=true principal=\"host/same.host@R2\""

                + "    useKeyTab=true keyTab=ktab2 storeKey=true;\n"

                + "};\n"

                ).getBytes());

        fos.close();

        /*

         * This server side context will be able to act as services in both

         * realms. Please note that we still don't support a single instance

         * of server to accept connections from two realms at the same time.

         * Therefore, we must call startAsServer in a given realm to start

         * working there. The same Subject never changes anyway.

         */

        Context s = Context.fromJAAS("me");

        // Default realm still R1

        s.startAsServer("host@same.host", GSSUtil.GSS_KRB5_MECH_OID);

        Context c1 = Context.fromUserPass("u1", "hello".toCharArray(), false);

        c1.startAsClient("host@same.host", GSSUtil.GSS_KRB5_MECH_OID);

        Context.handshake(c1, s);

        KDC.saveConfig("krb5.conf", k2, k1);

        Config.refresh();

        // Default realm now R2

        s.startAsServer("host@same.host", GSSUtil.GSS_KRB5_MECH_OID);

        Context c2 = Context.fromUserPass("u2", "hello".toCharArray(), false);

        c2.startAsClient("host@same.host", GSSUtil.GSS_KRB5_MECH_OID);

        Context.handshake(c2, s);

    }

}