/*

 * Copyright (c) 2016, 2017, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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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//

// SunJSSE does not support dynamic system properties, no way to re-use

// system properties in samevm/agentvm mode.

//

/*

 * @test

 * @bug 8148516

 * @summary Improve the default strength of EC in JDK

 * @modules jdk.crypto.ec

 * @run main/othervm ECCurvesconstraints PKIX

 * @run main/othervm ECCurvesconstraints SunX509

 */

import java.io.ByteArrayInputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.security.KeyStore;

import java.security.KeyFactory;

import java.security.cert.Certificate;

import java.security.cert.CertificateFactory;

import java.security.interfaces.ECPrivateKey;

import java.security.spec.PKCS8EncodedKeySpec;

import java.util.Base64;

import javax.net.ssl.KeyManagerFactory;

import javax.net.ssl.SSLContext;

import javax.net.ssl.SSLServerSocket;

import javax.net.ssl.SSLServerSocketFactory;

import javax.net.ssl.SSLSocket;

import javax.net.ssl.SSLSocketFactory;

import javax.net.ssl.TrustManagerFactory;

public class ECCurvesconstraints {

    /*

     * =============================================================

     * 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?

     */

    // Certificates and key used in the test.

    //

    // EC curve: secp224k1

    static String trustedCertStr =

        "-----BEGIN CERTIFICATE-----\n" +

        "MIIBCzCBugIEVz2lcjAKBggqhkjOPQQDAjAaMRgwFgYDVQQDDA93d3cuZXhhbXBs\n" +

        "ZS5vcmcwHhcNMTYwNTE5MTEzNzM5WhcNMTcwNTE5MTEzNzM5WjAaMRgwFgYDVQQD\n" +

        "DA93d3cuZXhhbXBsZS5vcmcwTjAQBgcqhkjOPQIBBgUrgQQAIAM6AAT68uovMZ8f\n" +

        "KARn5NOjvieJaq6h8zHYkM9w5DuN0kkOo4KBhke06EkQj0nvQQcSvppTV6RoDLY4\n" +

        "djAKBggqhkjOPQQDAgNAADA9AhwMNIujM0R0llpPH6d89d1S3VRGH/78ovc+zw51\n" +

        "Ah0AuZ1YlQkUbrJIzkuPSICxz5UfCWPe+7w4as+wiA==\n" +

        "-----END CERTIFICATE-----";

    // Private key in the format of PKCS#8

    static String targetPrivateKey =

        "MIGCAgEAMBAGByqGSM49AgEGBSuBBAAgBGswaQIBAQQdAPbckc86mgW/zexB1Ajq\n" +

        "38HntWOjdxL6XSoiAsWgBwYFK4EEACChPAM6AAT68uovMZ8fKARn5NOjvieJaq6h\n" +

        "8zHYkM9w5DuN0kkOo4KBhke06EkQj0nvQQcSvppTV6RoDLY4dg==";

    static String[] serverCerts = {trustedCertStr};

    static String[] serverKeys  = {targetPrivateKey};

    static String[] clientCerts = {trustedCertStr};

    static String[] clientKeys  = {targetPrivateKey};

    static char passphrase[] = "passphrase".toCharArray();

    /*

     * Is the server ready to serve?

     */

    volatile static boolean serverReady = false;

    /*

     * Turn on SSL debugging?

     */

    static boolean debug = false;

    /*

     * 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 {

        SSLContext context = generateSSLContext(false);

        SSLServerSocketFactory sslssf = context.getServerSocketFactory();

        SSLServerSocket sslServerSocket =

            (SSLServerSocket)sslssf.createServerSocket(serverPort);

        serverPort = sslServerSocket.getLocalPort();

        /*

         * Signal Client, we're ready for his connect.

         */

        serverReady = true;

        SSLSocket sslSocket = (SSLSocket)sslServerSocket.accept();

        try {

            sslSocket.setSoTimeout(5000);

            sslSocket.setSoLinger(true, 5);

            InputStream sslIS = sslSocket.getInputStream();

            OutputStream sslOS = sslSocket.getOutputStream();

            sslIS.read();

            sslOS.write('A');

            sslOS.flush();

            throw new Exception("EC curve secp224k1 should be disabled");

            // expected exception: no cipher suites in common

            System.out.println("Expected exception: " + she);

        } finally {

            sslSocket.close();

            sslServerSocket.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);

        }

        SSLContext context = generateSSLContext(true);

        SSLSocketFactory sslsf = context.getSocketFactory();

        SSLSocket sslSocket =

            (SSLSocket)sslsf.createSocket("localhost", serverPort);

        try {

            sslSocket.setSoTimeout(5000);

            sslSocket.setSoLinger(true, 5);

            InputStream sslIS = sslSocket.getInputStream();

            OutputStream sslOS = sslSocket.getOutputStream();

            sslOS.write('B');

            sslOS.flush();

            sslIS.read();

            throw new Exception("EC curve secp224k1 should be disabled");

            // expected exception: Received fatal alert

            System.out.println("Expected exception: " + she);

        } finally {

            sslSocket.close();

        }

    }

    /*

     * =============================================================

     * The remainder is just support stuff

     */

    private static String tmAlgorithm;             // trust manager

    private static void parseArguments(String[] args) {

        tmAlgorithm = args[0];

    }

    private static SSLContext generateSSLContext(boolean isClient)

            throws Exception {

        // generate certificate from cert string

        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        // create a key store

        KeyStore ks = KeyStore.getInstance("JKS");

        ks.load(null, null);

        // import the trused cert

        ByteArrayInputStream is =

                    new ByteArrayInputStream(trustedCertStr.getBytes());

        Certificate trusedCert = cf.generateCertificate(is);

        is.close();

        ks.setCertificateEntry("Export Signer", trusedCert);

        String[] certStrs = null;

        String[] keyStrs = null;

        if (isClient) {

            certStrs = clientCerts;

            keyStrs = clientKeys;

        } else {

            certStrs = serverCerts;

            keyStrs = serverKeys;

        }

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

            // generate the private key.

            String keySpecStr = keyStrs[i];

            PKCS8EncodedKeySpec priKeySpec = new PKCS8EncodedKeySpec(

                                Base64.getMimeDecoder().decode(keySpecStr));

            KeyFactory kf = KeyFactory.getInstance("EC");

            ECPrivateKey priKey =

                    (ECPrivateKey)kf.generatePrivate(priKeySpec);

            // generate certificate chain

            String keyCertStr = certStrs[i];

            is = new ByteArrayInputStream(keyCertStr.getBytes());

            Certificate keyCert = cf.generateCertificate(is);

            is.close();

            Certificate[] chain = new Certificate[2];

            chain[0] = keyCert;

            chain[1] = trusedCert;

            // import the key entry.

            ks.setKeyEntry("key-entry-" + i, priKey, passphrase, chain);

        }

        // create SSL context

        TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmAlgorithm);

        tmf.init(ks);

        SSLContext ctx = SSLContext.getInstance("TLS");

        KeyManagerFactory kmf = KeyManagerFactory.getInstance("NewSunX509");

        kmf.init(ks, passphrase);

        ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);

        ks = null;

        return ctx;

    }

    // 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");

        }

        /*

         * Get the customized arguments.

         */

        parseArguments(args);

        /*

         * Start the tests.

         */

        new ECCurvesconstraints();

    }

    Thread clientThread = null;

    Thread serverThread = null;

    /*

     * Primary constructor, used to drive remainder of the test.

     *

     * Fork off the other side, then do your work.

     */

    ECCurvesconstraints() 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, because of " + e);

                        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, because of " + e);

                        clientException = e;

                    }

                }

            };

            clientThread.start();

        } else {

            try {

                doClientSide();

            } catch (Exception e) {

                clientException = e;

            }

        }

    }

}