/*

 * Copyright (c) 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.

 *

 * 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

 * @bug 8004502

 * @summary Sanity check to ensure that Kerberos cipher suites cannot be

 *   negotiated when running on a compact profile that does not include Kerberos

 */

import java.net.*;

import java.util.*;

import javax.net.ssl.*;

public class NoKerberos {

    static final List<String> KERBEROS_CIPHER_SUITES = Arrays.asList(

        "TLS_KRB5_WITH_RC4_128_SHA",

        "TLS_KRB5_WITH_RC4_128_MD5",

        "TLS_KRB5_WITH_3DES_EDE_CBC_SHA",

        "TLS_KRB5_WITH_3DES_EDE_CBC_MD5",

        "TLS_KRB5_WITH_DES_CBC_SHA",

        "TLS_KRB5_WITH_DES_CBC_MD5",

        "TLS_KRB5_EXPORT_WITH_RC4_40_SHA",

        "TLS_KRB5_EXPORT_WITH_RC4_40_MD5",

        "TLS_KRB5_EXPORT_WITH_DES_CBC_40_SHA",

        "TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5"

    );

    /**

     * Checks that the given array of supported cipher suites does not include

     * any Kerberos cipher suites.

     */

    static void checkNotSupported(String[] supportedSuites) {

        for (String suites: supportedSuites) {

            if (KERBEROS_CIPHER_SUITES.contains(suites)) {

                throw new RuntimeException("Supported list of cipher suites " +

                    " should not include Kerberos cipher suites");

            }

        }

    }

    public static void main(String[] args) throws Exception {

        try {

            Class.forName("javax.security.auth.kerberos.KerberosPrincipal");

            System.out.println("Kerberos is present, nothing to test");

            return;

        } catch (ClassNotFoundException okay) { }

        // test SSLSocket

        try (Socket s = SSLSocketFactory.getDefault().createSocket()) {

            SSLSocket sslSocket = (SSLSocket)s;

            checkNotSupported(sslSocket.getSupportedCipherSuites());

            // attempt to enable each of the Kerberos cipher suites

            for (String kcs: KERBEROS_CIPHER_SUITES) {

                String[] suites = { kcs };

                try {

                    sslSocket.setEnabledCipherSuites(suites);

                    throw new RuntimeException("SSLSocket.setEnabledCipherSuitessuites allowed " +

                        kcs + " but Kerberos not supported");

                } catch (IllegalArgumentException expected) { }

            }

        }

        // test SSLServerSocket

        try (ServerSocket ss = SSLServerSocketFactory.getDefault().createServerSocket()) {

            SSLServerSocket sslSocket = (SSLServerSocket)ss;

            checkNotSupported(sslSocket.getSupportedCipherSuites());

            // attempt to enable each of the Kerberos cipher suites

            for (String kcs: KERBEROS_CIPHER_SUITES) {

                String[] suites = { kcs };

                try {

                    sslSocket.setEnabledCipherSuites(suites);

                    throw new RuntimeException("SSLSocket.setEnabledCipherSuitessuites allowed " +

                        kcs + " but Kerberos not supported");

                } catch (IllegalArgumentException expected) { }

            }

        }

    }

}