/*
 * Copyright (c) 2012, 2018, 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 7200295
 * @summary CertificateRequest message is wrapping when using large
 *          numbers of Certs
 * @run main/othervm CertRequestOverflow
 */

import java.io.*;
import java.net.*;
import java.util.*;
import javax.net.ssl.*;
import java.security.cert.*;
import java.security.*;

public class CertRequestOverflow {

    /*
     * =============================================================
     * 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 = false;

    /*
     * Where do we find the keystores?
     */
    static String pathToStores = "../../../../javax/net/ssl/etc";
    static String keyStoreFile = "keystore";
    static String trustStoreFile = "truststore";
    static String passwd = "passphrase";
    private final static char[] cpasswd = "passphrase".toCharArray();

    /*
     * 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 {
        SSLServerSocketFactory sslssf =
                                getContext(true).getServerSocketFactory();
        SSLServerSocket sslServerSocket =
            (SSLServerSocket) sslssf.createServerSocket(serverPort);
        serverPort = sslServerSocket.getLocalPort();
        if (debug) {
            System.out.println("Server port is " + serverPort);
        }

        // enable endpoint identification
        // ignore, we may test the feature when known how to parse client
        // hostname
        //SSLParameters params = sslServerSocket.getSSLParameters();
        //params.setEndpointIdentificationAlgorithm("HTTPS");
        //sslServerSocket.setSSLParameters(params);

        /*
         * Signal Client, we're ready for his connect.
         */
        serverReady = true;

        SSLSocket sslSocket = (SSLSocket) sslServerSocket.accept();
        sslSocket.setNeedClientAuth(true);
        InputStream sslIS = sslSocket.getInputStream();
        OutputStream sslOS = sslSocket.getOutputStream();

        try {
            sslIS.read();
            sslOS.write(85);
            sslOS.flush();

            throw new Exception("SERVER TEST FAILED!  " +
                        "It is expected to fail with field length overflow");
        } catch (SSLException ssle) {
            Throwable cause = ssle.getCause();
            if (!(cause instanceof RuntimeException)) {
                System.out.println("We are expecting a RuntimeException!");
                throw ssle;
            }
            System.out.println("The expected exception!  " + ssle);
        } finally {
            sslSocket.close();
        }

        System.out.println("SERVER TEST PASSED!");
    }

    /*
     * 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 = getContext(false).getSocketFactory();
        SSLSocket sslSocket = (SSLSocket)
            sslsf.createSocket("localhost", serverPort);
        if (debug) {
            System.out.println("Connected to: " +
                    sslSocket.getRemoteSocketAddress());
        }

        // enable endpoint identification
        SSLParameters params = sslSocket.getSSLParameters();
        params.setEndpointIdentificationAlgorithm("HTTPS");
        sslSocket.setSSLParameters(params);

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

        try {
            sslOS.write(280);
            sslOS.flush();
            sslIS.read();
        } catch (SSLException ssle) {
            System.out.println("An expected exception!");
        } finally {
            sslSocket.close();
        }
    }

    MyExtendedX509TM serverTM;
    MyExtendedX509TM clientTM;

    private SSLContext getContext(boolean server) throws Exception {
        String keyFilename =
            System.getProperty("test.src", "./") + "/" + pathToStores +
                "/" + keyStoreFile;
        String trustFilename =
            System.getProperty("test.src", "./") + "/" + pathToStores +
                "/" + trustStoreFile;

        KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
        KeyStore ks = KeyStore.getInstance("JKS");
        ks.load(new FileInputStream(keyFilename), cpasswd);
        kmf.init(ks, cpasswd);

        TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
        KeyStore ts = KeyStore.getInstance("JKS");
        ts.load(new FileInputStream(trustFilename), cpasswd);
        tmf.init(ts);

        TrustManager tms[] = tmf.getTrustManagers();
        if (tms == null || tms.length == 0) {
            throw new Exception("unexpected trust manager implementation");
        } else {
           if (!(tms[0] instanceof X509TrustManager)) {
            throw new Exception("unexpected trust manager implementation: "
                                + tms[0].getClass().getCanonicalName());
           }
        }

        if (server) {
            serverTM = new MyExtendedX509TM((X509TrustManager)tms[0]);

            tms = new TrustManager[] {serverTM};
        } else {
            clientTM = new MyExtendedX509TM((X509TrustManager)tms[0]);

            tms = new TrustManager[] {clientTM};
        }

        SSLContext ctx = SSLContext.getInstance("TLSv1.2");
        ctx.init(kmf.getKeyManagers(), tms, null);

        return ctx;
    }

    static class MyExtendedX509TM extends X509ExtendedTrustManager
            implements X509TrustManager {

        X509TrustManager tm;

        boolean clientChecked;
        boolean serverChecked;

        MyExtendedX509TM(X509TrustManager tm) {
            clientChecked = false;
            serverChecked = false;

            this.tm = tm;
        }

        public boolean wasClientChecked() {
            return clientChecked;
        }

        public boolean wasServerChecked() {
            return serverChecked;
        }

        @Override
        public void checkClientTrusted(X509Certificate chain[], String authType)
                throws CertificateException {
            tm.checkClientTrusted(chain, authType);
        }

        @Override
        public void checkServerTrusted(X509Certificate chain[], String authType)
                throws CertificateException {
            tm.checkServerTrusted(chain, authType);
        }

        @Override
        public X509Certificate[] getAcceptedIssuers() {
            // (hack code) increase the size of the returned array to make a
            // overflow CertificateRequest.
            List<X509Certificate> issuersList = new LinkedList<>();
            X509Certificate[] issuers = tm.getAcceptedIssuers();
            for (int i = 0; i < 800; i += issuers.length) {
                for (X509Certificate issuer : issuers) {
                    issuersList.add(issuer);
                }
            }

            return issuersList.toArray(issuers);
        }

        @Override
        public void checkClientTrusted(X509Certificate[] chain, String authType,
                Socket socket) throws CertificateException {
            clientChecked = true;
            tm.checkClientTrusted(chain, authType);
        }

        @Override
        public void checkServerTrusted(X509Certificate[] chain, String authType,
                Socket socket) throws CertificateException {
            serverChecked = true;
            tm.checkServerTrusted(chain, authType);
        }

        @Override
        public void checkClientTrusted(X509Certificate[] chain, String authType,
            SSLEngine engine) throws CertificateException {
            clientChecked = true;
            tm.checkClientTrusted(chain, authType);
        }

        @Override
        public void checkServerTrusted(X509Certificate[] chain, String authType,
            SSLEngine engine) throws CertificateException {
            serverChecked = true;
            tm.checkServerTrusted(chain, authType);
        }
    }

    /*
     * =============================================================
     * 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 {

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

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

    Thread clientThread = null;
    Thread serverThread = null;

    /*
     * Primary constructor, used to drive remainder of the test.
     *
     * Fork off the other side, then do your work.
     */
    CertRequestOverflow() throws Exception {
        if (separateServerThread) {
            startServer(true);
            startClient(false);
        } else {
            startClient(true);
            startServer(false);
        }

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

        /*
         * When we get here, the test is pretty much over.
         *
         * If the main thread excepted, that propagates back
         * immediately.  If the other thread threw an exception, we
         * should report back.
         */
        if (serverException != null)
            throw serverException;
        if (clientException != null)
            throw clientException;
    }

    void startServer(boolean newThread) throws Exception {
        if (newThread) {
            serverThread = new Thread() {
                @Override
                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 {
            doServerSide();
        }
    }

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