/*

 * 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

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import javax.naming.Context;

import javax.naming.NamingException;

import javax.naming.directory.DirContext;

import javax.naming.directory.InitialDirContext;

import java.io.IOException;

import java.net.InetAddress;

import java.net.ServerSocket;

import java.util.Hashtable;

/*

 * @test

 * @bug 8205330

 * @summary Test that If a connection has already been established and then

 *          the LDAP directory server sends an (unsolicited)

 *          "Notice of Disconnection", make sure client handle it correctly,

 *          no NPE been thrown.

 * @run main/othervm DisconnectNPETest

 */

public class DisconnectNPETest {

    // Normally the NPE bug should be hit less than 100 times run, but just in

    // case, we set repeat count to 1000 here.

    private static final int REPEAT_COUNT = 1000;

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

        new DisconnectNPETest().run();

    }

    private ServerSocket serverSocket;

    private Hashtable<Object, Object> env;

    private void initRes() throws IOException {

        serverSocket = new ServerSocket(0, 0, InetAddress.getLoopbackAddress());

    }

    private void initTest() {

        env = new Hashtable<>();

        env.put(Context.INITIAL_CONTEXT_FACTORY,

                "com.sun.jndi.ldap.LdapCtxFactory");

        env.put(Context.PROVIDER_URL, String.format("ldap://%s:%d/",

                InetAddress.getLoopbackAddress().getHostName(),

                serverSocket.getLocalPort()));

        env.put(Context.SECURITY_AUTHENTICATION, "simple");

        env.put(Context.SECURITY_PRINCIPAL,

                "cn=8205330,ou=Client6,ou=Vendor1,o=IMC,c=US");

        env.put(Context.SECURITY_CREDENTIALS, "secret123");

    }

    private void run() throws IOException {

        initRes();

        initTest();

        int count = 0;

            while (count < REPEAT_COUNT) {

                count++;

                InitialDirContext context = null;

                try {

                    context = new InitialDirContext(env);

                } catch (NamingException ne) {

                    System.out.println("(" + count + "/" + REPEAT_COUNT

                            + ") It's ok to get NamingException: " + ne);

                    // for debug

                    ne.printStackTrace(System.out);

                } finally {

                    cleanupContext(context);

                }

            }

        } finally {

            System.out.println("Test count: " + count + "/" + REPEAT_COUNT);

        }

    }

    private void cleanupContext(DirContext context) {

        if (context != null) {

            try {

                context.close();

            } catch (NamingException e) {

                // ignore

            }

        }

    }

}