/*
 * Copyright (c) 2005, 2025, 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.
 */

// SunJSSE does not support dynamic system properties, no way to re-use
// system properties in samevm/agentvm mode.

/*
 * @test
 * @bug 6223624
 * @library /test/lib /javax/net/ssl/templates
 * @summary SSLSocket.setUseClientMode() fails to throw expected
 *        IllegalArgumentException
 * @run main/othervm SetClientMode TLSv1
 * @run main/othervm SetClientMode TLSv1.1
 * @run main/othervm SetClientMode TLSv1.2
 * @run main/othervm SetClientMode TLSv1.3
 */

/*
 * Attempts to replicate a TCK test failure which creates SSLServerSockets
 * and then runs client threads which connect and start handshaking. Once
 * handshaking is begun the server side attempts to invoke
 * SSLSocket.setUseClientMode() on one or the other of the ends of the
 * connection, expecting an IllegalArgumentException.
 *
 * If the server side of the connection tries setUseClientMode() we
 * see the expected exception. If the setting is tried on the
 * client side SSLSocket, we do *not* see the exception, except
 * occasionally on the very first iteration.
 */

import java.lang.*;
import java.net.*;
import java.util.concurrent.CountDownLatch;
import javax.net.ssl.*;
import jdk.test.lib.security.SecurityUtils;

import static jdk.test.lib.Asserts.assertThrows;

public class SetClientMode extends SSLContextTemplate {
    private volatile int serverPort = 0;
    private static final CountDownLatch HANDSHAKE_COMPLETE = new CountDownLatch(1);

    public static void main(String[] args) throws Exception {
        String protocol = args[0];

        if ("TLSv1".equals(protocol) || "TLSv1.1".equals(protocol)) {
            SecurityUtils.removeFromDisabledTlsAlgs(protocol);
        }

        new SetClientMode().run(protocol);
    }

    public void run(String protocol) throws Exception {
        // Create a server socket
        SSLServerSocketFactory ssf = createServerSSLContext().getServerSocketFactory();

        try (SSLServerSocket serverSocket =
                (SSLServerSocket) ssf.createServerSocket(serverPort)) {
            serverSocket.setEnabledProtocols(new String[]{ protocol });
            serverPort = serverSocket.getLocalPort();

            // Create a client socket
            SSLSocketFactory sf = createClientSSLContext().getSocketFactory();

            try (SSLSocket clientSocket = (SSLSocket) sf.createSocket(
                    InetAddress.getLocalHost(),
                    serverPort)) {

                // Create a client which will use the SSLSocket to talk to the server
                Client client = new Client(clientSocket);

                // Start the client and then accept any connection
                client.start();

                SSLSocket connectedSocket = (SSLSocket) serverSocket.accept();

                // force handshaking to complete
                connectedSocket.getSession();

                HANDSHAKE_COMPLETE.await();

                // Now try invoking setClientMode() on the client socket.
                // We expect to see an IllegalArgumentException because
                // handshaking has begun.
                assertThrows(IllegalArgumentException.class,
                        () -> clientSocket.setUseClientMode(false));
            }
        }
    }

    // A thread-based client which does nothing except
    // start handshaking on the socket it's given.
    static class Client extends Thread {
        private final SSLSocket socket;

        public Client(SSLSocket s) {
            socket = s;
        }

        public void run() {
            try {
                socket.startHandshake();
                HANDSHAKE_COMPLETE.countDown();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}