/*
 * 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.
 */

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

/**
 * @test
 * @bug 7068321
 * @summary Support TLS Server Name Indication (SNI) Extension in JSSE Server
 * @library ../templates
 * @build SSLCapabilities SSLExplorer
 * @run main/othervm SSLSocketExplorerFailure SSLv2Hello,SSLv3
 * @run main/othervm SSLSocketExplorerFailure SSLv3
 * @run main/othervm SSLSocketExplorerFailure TLSv1
 * @run main/othervm SSLSocketExplorerFailure TLSv1.1
 * @run main/othervm SSLSocketExplorerFailure TLSv1.2
 */

import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.*;
import java.net.*;
import javax.net.ssl.*;
import java.security.Security;

public class SSLSocketExplorerFailure {

    /*
     * =============================================================
     * Set the various variables needed for the tests, then
     * specify what tests to run on each side.
     */

    /*
     * Should we run the client or server in a separate thread?
     * Both sides can throw exceptions, but do you have a preference
     * as to which side should be the main thread.
     */
    static boolean separateServerThread = true;

    /*
     * Where do we find the keystores?
     */
    static String pathToStores = "../etc";
    static String keyStoreFile = "keystore";
    static String trustStoreFile = "truststore";
    static String passwd = "passphrase";

    /*
     * Is the server ready to serve?
     */
    volatile static boolean serverReady = false;

    /*
     * Turn on SSL debugging?
     */
    static boolean debug = false;

    /*
     * If the client or server is doing some kind of object creation
     * that the other side depends on, and that thread prematurely
     * exits, you may experience a hang.  The test harness will
     * terminate all hung threads after its timeout has expired,
     * currently 3 minutes by default, but you might try to be
     * smart about it....
     */

    /*
     * Define the server side of the test.
     *
     * If the server prematurely exits, serverReady will be set to true
     * to avoid infinite hangs.
     */
    void doServerSide() throws Exception {

        ServerSocket serverSocket = new ServerSocket(serverPort);

        // Signal Client, we're ready for his connect.
        serverPort = serverSocket.getLocalPort();
        serverReady = true;

        Socket socket = serverSocket.accept();
        InputStream ins = socket.getInputStream();

        byte[] buffer = new byte[0xFF];
        int position = 0;
        SSLCapabilities capabilities = null;
        boolean failed = false;
        try {
            // Read the header of TLS record
            while (position < SSLExplorer.RECORD_HEADER_SIZE) {
                int count = SSLExplorer.RECORD_HEADER_SIZE - position;
                int n = ins.read(buffer, position, count);
                if (n < 0) {
                    throw new Exception("unexpected end of stream!");
                }
                position += n;
            }

            int recordLength = SSLExplorer.getRequiredSize(buffer, 0, position);
            if (buffer.length < recordLength) {
                buffer = Arrays.copyOf(buffer, recordLength);
            }

            while (position < recordLength) {
                int count = recordLength - position;
                int n = ins.read(buffer, position, count);
                if (n < 0) {
                    throw new Exception("unexpected end of stream!");
                }
                position += n;
            }

            capabilities = SSLExplorer.explore(buffer, 0, recordLength);;
            if (capabilities != null) {
                System.out.println("Record version: " +
                        capabilities.getRecordVersion());
                System.out.println("Hello version: " +
                        capabilities.getHelloVersion());
            }

            // want an I/O exception
            throw new IOException("We just want a I/O exception");
        } catch (Exception e) {
            failed =  true;
        }

        // off course, the above explore failed. Faile to failure handler
        SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, null, null);
        SSLSocketFactory sslsf = context.getSocketFactory();
        ByteArrayInputStream bais =
            new ByteArrayInputStream(buffer, 0, position);
        SSLSocket sslSocket = (SSLSocket)sslsf.createSocket(socket, bais, true);

        try {
            InputStream sslIS = sslSocket.getInputStream();
            OutputStream sslOS = sslSocket.getOutputStream();

            sslIS.read();
            if (!failed) {
                sslOS.write(85);
                sslOS.flush();
            } else {
                sslSocket.close();
            }
        } catch (Exception e) {
            System.out.println("server exception " + e);
        } finally {
            sslSocket.close();
            serverSocket.close();
        }
    }


    /*
     * Define the client side of the test.
     *
     * If the server prematurely exits, serverReady will be set to true
     * to avoid infinite hangs.
     */
    void doClientSide() throws Exception {

        /*
         * Wait for server to get started.
         */
        while (!serverReady) {
            Thread.sleep(50);
        }

        SSLSocketFactory sslsf =
            (SSLSocketFactory) SSLSocketFactory.getDefault();
        SSLSocket sslSocket = (SSLSocket)
            sslsf.createSocket("localhost", serverPort);

        // enable the specified TLS protocol
        sslSocket.setEnabledProtocols(supportedProtocols);

        try {
            InputStream sslIS = sslSocket.getInputStream();
            OutputStream sslOS = sslSocket.getOutputStream();

            sslOS.write(280);
            sslOS.flush();
            sslIS.read();
        } catch (Exception e) {
            System.out.println("client exception " + e);
        } finally {
            sslSocket.close();
        }
    }

    private static String[] supportedProtocols;    // supported protocols

    private static void parseArguments(String[] args) {
        supportedProtocols = args[0].split(",");
    }


    /*
     * =============================================================
     * The remainder is just support stuff
     */

    // use any free port by default
    volatile int serverPort = 0;

    volatile Exception serverException = null;
    volatile Exception clientException = null;

    public static void main(String[] args) throws Exception {
        Security.setProperty("jdk.tls.disabledAlgorithms", "");
        Security.setProperty("jdk.certpath.disabledAlgorithms", "");

        String keyFilename =
            System.getProperty("test.src", ".") + "/" + pathToStores +
                "/" + keyStoreFile;
        String trustFilename =
            System.getProperty("test.src", ".") + "/" + pathToStores +
                "/" + trustStoreFile;

        System.setProperty("javax.net.ssl.keyStore", keyFilename);
        System.setProperty("javax.net.ssl.keyStorePassword", passwd);
        System.setProperty("javax.net.ssl.trustStore", trustFilename);
        System.setProperty("javax.net.ssl.trustStorePassword", passwd);

        if (debug)
            System.setProperty("javax.net.debug", "all");

        /*
         * Get the customized arguments.
         */
        parseArguments(args);

        /*
         * Start the tests.
         */
        new SSLSocketExplorerFailure();
    }

    Thread clientThread = null;
    Thread serverThread = null;

    /*
     * Primary constructor, used to drive remainder of the test.
     *
     * Fork off the other side, then do your work.
     */
    SSLSocketExplorerFailure() throws Exception {
        try {
            if (separateServerThread) {
                startServer(true);
                startClient(false);
            } else {
                startClient(true);
                startServer(false);
            }
        } catch (Exception e) {
            // swallow for now.  Show later
        }

        /*
         * Wait for other side to close down.
         */
        if (separateServerThread) {
            serverThread.join();
        } else {
            clientThread.join();
        }

        /*
         * When we get here, the test is pretty much over.
         * Which side threw the error?
         */
        Exception local;
        Exception remote;
        String whichRemote;

        if (separateServerThread) {
            remote = serverException;
            local = clientException;
            whichRemote = "server";
        } else {
            remote = clientException;
            local = serverException;
            whichRemote = "client";
        }

        /*
         * If both failed, return the curthread's exception, but also
         * print the remote side Exception
         */
        if ((local != null) && (remote != null)) {
            System.out.println(whichRemote + " also threw:");
            remote.printStackTrace();
            System.out.println();
            throw local;
        }

        if (remote != null) {
            throw remote;
        }

        if (local != null) {
            throw local;
        }
    }

    void startServer(boolean newThread) throws Exception {
        if (newThread) {
            serverThread = new Thread() {
                public void run() {
                    try {
                        doServerSide();
                    } catch (Exception e) {
                        /*
                         * Our server thread just died.
                         *
                         * Release the client, if not active already...
                         */
                        System.err.println("Server died...");
                        serverReady = true;
                        serverException = e;
                    }
                }
            };
            serverThread.start();
        } else {
            try {
                doServerSide();
            } catch (Exception e) {
                serverException = e;
            } finally {
                serverReady = true;
            }
        }
    }

    void startClient(boolean newThread) throws Exception {
        if (newThread) {
            clientThread = new Thread() {
                public void run() {
                    try {
                        doClientSide();
                    } catch (Exception e) {
                        /*
                         * Our client thread just died.
                         */
                        System.err.println("Client died...");
                        clientException = e;
                    }
                }
            };
            clientThread.start();
        } else {
            try {
                doClientSide();
            } catch (Exception e) {
                clientException = e;
            }
        }
    }
}