/*

 * Copyright (c) 2010, 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 6952519

 * @run main/timeout=40/othervm TcpTimeout

 * @summary kdc_timeout is not being honoured when using TCP

 */

import java.io.*;

import java.net.ServerSocket;

import sun.security.krb5.Config;

public class TcpTimeout {

    public static void main(String[] args)

            throws Exception {

        System.setProperty("sun.security.krb5.debug", "true");

        final int p1 = 10000 + new java.util.Random().nextInt(10000);

        final int p2 = 20000 + new java.util.Random().nextInt(10000);

        final int p3 = 30000 + new java.util.Random().nextInt(10000);

        KDC k = new KDC(OneKDC.REALM, OneKDC.KDCHOST, p3, true);

        k.addPrincipal(OneKDC.USER, OneKDC.PASS);

        k.addPrincipalRandKey("krbtgt/" + OneKDC.REALM);

        // Start two listener that does not communicate, simulate timeout

        new Thread() {

            public void run() {

                try {

                    new ServerSocket(p1).accept();

                } catch (Exception e) {

                }}

        }.start();

        new Thread() {

            public void run() {

                try {

                    new ServerSocket(p2).accept();

                } catch (Exception e) {

                }}

        }.start();

        FileWriter fw = new FileWriter("alternative-krb5.conf");

        fw.write("[libdefaults]\n" +

                "udp_preference_limit = 1\n" +

                "max_retries = 2\n" +

                "default_realm = " + OneKDC.REALM + "\n" +

                "kdc_timeout = 5000\n");

        fw.write("[realms]\n" + OneKDC.REALM + " = {\n" +

                "kdc = " + OneKDC.KDCHOST + ":" + p1 + "\n" +

                "kdc = " + OneKDC.KDCHOST + ":" + p2 + "\n" +

                "kdc = " + OneKDC.KDCHOST + ":" + p3 + "\n" +

                "}\n");

        fw.close();

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

        Config.refresh();

        // The correct behavior should be:

        // 5 sec on p1, 5 sec on p1, fail

        // 5 sec on p2, 5 sec on p2, fail

        // p3 ok, p3 ok again for preauth.

        // The total time should be 20sec + 2x. x is processing time for AS-REQ.

        int count = 6;

        long start = System.nanoTime();

        ByteArrayOutputStream bo = new ByteArrayOutputStream();

        PrintStream oldout = System.out;

        System.setOut(new PrintStream(bo));

        Context c = Context.fromUserPass(OneKDC.USER, OneKDC.PASS, false);

        System.setOut(oldout);

        String[] lines = new String(bo.toByteArray()).split("\n");

        for (String line: lines) {

            if (line.startsWith(">>> KDCCommunication")) {

                System.out.println(line);

                count--;

            }

        }

        if (count != 0) {

            throw new Exception("Retry count is " + count + " less");

        }

        long end = System.nanoTime();

        if ((end - start)/1000000000L < 20) {

            throw new Exception("Too fast? " + (end - start)/1000000000L);

        }

    }

    private static KDC on(int p) throws Exception {

        KDC k = new KDC(OneKDC.REALM, OneKDC.KDCHOST, p, true);

        k.addPrincipal(OneKDC.USER, OneKDC.PASS);

        k.addPrincipalRandKey("krbtgt/" + OneKDC.REALM);

        return k;

    }

    private static void addFakeKDCs()

            throws Exception {

        BufferedReader fr = new BufferedReader(new FileReader(OneKDC.KRB5_CONF));

        FileWriter fw = new FileWriter("alternative-krb5.conf");

        while (true) {

            String s = fr.readLine();

            if (s == null) {

                break;

            }

            if (s.trim().startsWith("kdc = ")) {

                fw.write("    kdc = localhost:33333\n");

                fw.write("    kdc = localhost:22222\n");

            }

            fw.write(s + "\n");

        }

        fr.close();

        fw.close();

        sun.security.krb5.Config.refresh();

    }

}