/*

 * Copyright (c) 2019, 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.

 */

//

// Please run in othervm mode.  SunJSSE does not support dynamic system

// properties, no way to re-use system properties in samevm/agentvm mode.

//

/*

 * @test

 * @bug 8221253

 * @summary TLSv1.3 may generate TLSInnerPlainText longer than 2^14+1 bytes

 * @modules jdk.crypto.ec

 * @library /javax/net/ssl/templates

 * @run main/othervm Tls13PacketSize

 */

import java.io.InputStream;

import java.io.OutputStream;

import javax.net.ssl.SSLSocket;

public class Tls13PacketSize extends SSLSocketTemplate {

    private static final byte[] appData = new byte[16385];

    static {

        for (int i = 0; i < appData.length; i++) {

            appData[i] = (byte)('A' + (i % 26));

        }

    }

    // Run the test case.

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

        (new Tls13PacketSize()).run();

    }

    @Override

    protected void runServerApplication(SSLSocket socket) throws Exception {

        // here comes the test logic

        InputStream sslIS = socket.getInputStream();

        OutputStream sslOS = socket.getOutputStream();

        sslIS.read();

        int extra = sslIS.available();

        System.out.println("Server input bytes: " + extra);

        // Considering the padding impact, the record plaintext is less

        // than the TLSPlaintext.fragment length (2^14).

        if (extra >= 16383) {    // 16383: 2^14 - 1 byte read above

            throw new Exception(

                    "Client record plaintext exceeds 2^14 octets: " + extra);

        }

        sslOS.write(appData);

        sslOS.flush();

    }

    /*

     * Define the client side application of the test for the specified socket.

     * This method is used if the returned value of

     * isCustomizedClientConnection() is false.

     *

     * @param socket may be null is no client socket is generated.

     *

     * @see #isCustomizedClientConnection()

     */

    protected void runClientApplication(SSLSocket socket) throws Exception {

        socket.setEnabledProtocols(new String[] {"TLSv1.3"});

        InputStream sslIS = socket.getInputStream();

        OutputStream sslOS = socket.getOutputStream();

        sslOS.write(appData);

        sslOS.flush();

        sslIS.read();

        int extra = sslIS.available();

        System.out.println("Client input bytes: " + extra);

        // Considering the padding impact, the record plaintext is less

        // than the TLSPlaintext.fragment length (2^14).

        if (extra >= 16383) {    // 16383: 2^14 - 1 byte read above

            throw new Exception(

                    "Server record plaintext exceeds 2^14 octets: " + extra);

        }

    }

}