/*

 * Copyright (c) 2004, 2015, 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.

 */

/*

 * @test

 * @bug 4495742

 * @summary Add non-blocking SSL/TLS functionality, usable with any

 *      I/O abstraction

 *

 * This is to test larger buffer arrays, and make sure the maximum

 * is being passed.

 *

 * @run main/othervm -Djsse.enableCBCProtection=false LargeBufs

 *

 * @author Brad R. Wetmore

 * @key randomness

 */

import javax.net.ssl.*;

import javax.net.ssl.SSLEngineResult.*;

import java.io.*;

import java.security.*;

import java.nio.*;

import java.util.Random;

public class LargeBufs {

    private SSLContext sslc;

    static private SSLEngine ssle1;     // client

    static private SSLEngine ssle2;     // server

    private static String pathToStores = "../etc";

    private static String keyStoreFile = "keystore";

    private static String trustStoreFile = "truststore";

    private static String passwd = "passphrase";

    private static String keyFilename =

            System.getProperty("test.src", "./") + "/" + pathToStores +

                "/" + keyStoreFile;

    private static String trustFilename =

            System.getProperty("test.src", "./") + "/" + pathToStores +

                "/" + trustStoreFile;

    private ByteBuffer appOut1;         // write side of ssle1

    private ByteBuffer appIn1;          // read side of ssle1

    private ByteBuffer appOut2;         // write side of ssle2

    private ByteBuffer appIn2;          // read side of ssle2

    private ByteBuffer oneToTwo;        // "reliable" transport ssle1->ssle2

    private ByteBuffer twoToOne;        // "reliable" transport ssle2->ssle1

    private int appBufferMax;

    private int netBufferMax;

    private int OFFSET = 37;

    /*

     * Majority of the test case is here, setup is done below.

     */

    private void createSSLEngines() throws Exception {

        ssle1 = sslc.createSSLEngine("client", 1);

        ssle1.setUseClientMode(true);

        ssle2 = sslc.createSSLEngine();

        ssle2.setUseClientMode(false);

        ssle2.setNeedClientAuth(true);

    }

    private void runTest(String cipher) throws Exception {

        boolean dataDone = false;

        createSSLEngines();

        System.out.println("Using " + cipher);

        ssle1.setEnabledCipherSuites(new String [] { cipher });

        ssle2.setEnabledCipherSuites(new String [] { cipher });

        createBuffers();

        SSLEngineResult result1;        // ssle1's results from last operation

        SSLEngineResult result2;        // ssle2's results from last operation

        while (!isEngineClosed(ssle1) || !isEngineClosed(ssle2)) {

            log("================");

            result1 = ssle1.wrap(appOut1, oneToTwo);

            result2 = ssle2.wrap(appOut2, twoToOne);

            if ((result1.bytesConsumed() != 0) &&

                (result1.bytesConsumed() != appBufferMax) &&

                (result1.bytesConsumed() != OFFSET)) {

                throw new Exception("result1: " + result1);

            }

            if ((result2.bytesConsumed() != 0) &&

                (result2.bytesConsumed() != appBufferMax) &&

                (result2.bytesConsumed() != 2 * OFFSET)) {

                throw new Exception("result2: " + result2);

            }

            log("wrap1:  " + result1);

            log("oneToTwo  = " + oneToTwo);

            log("");

            log("wrap2:  " + result2);

            log("twoToOne  = " + twoToOne);

            runDelegatedTasks(result1, ssle1);

            runDelegatedTasks(result2, ssle2);

            oneToTwo.flip();

            twoToOne.flip();

            log("----");

            result1 = ssle1.unwrap(twoToOne, appIn1);

            result2 = ssle2.unwrap(oneToTwo, appIn2);

            if ((result1.bytesProduced() != 0) &&

                (result1.bytesProduced() != appBufferMax) &&

                (result1.bytesProduced() != 2 * OFFSET)) {

                throw new Exception("result1: " + result1);

            }

            if ((result2.bytesProduced() != 0) &&

                (result2.bytesProduced() != appBufferMax) &&

                (result2.bytesProduced() != OFFSET)) {

                throw new Exception("result1: " + result1);

            }

            log("unwrap1: " + result1);

            log("twoToOne  = " + twoToOne);

            log("");

            log("unwrap2: " + result2);

            log("oneToTwo  = " + oneToTwo);

            runDelegatedTasks(result1, ssle1);

            runDelegatedTasks(result2, ssle2);

            oneToTwo.compact();

            twoToOne.compact();

            /*

             * If we've transfered all the data between app1 and app2,

             * we try to close and see what that gets us.

             */

            if (!dataDone && (appOut1.limit() == appIn2.position()) &&

                    (appOut2.limit() == appIn1.position())) {

                checkTransfer(appOut1, appIn2);

                checkTransfer(appOut2, appIn1);

                log("Closing ssle1's *OUTBOUND*...");

                ssle1.closeOutbound();

                dataDone = true;

            }

        }

    }

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

        // reset the security property to make sure that the algorithms

        // and keys used in this test are not disabled.

        Security.setProperty("jdk.tls.disabledAlgorithms", "");

        LargeBufs test;

        test = new LargeBufs();

        test.runTest("SSL_RSA_WITH_RC4_128_MD5");

        test = new LargeBufs();

        test.runTest("SSL_RSA_WITH_3DES_EDE_CBC_SHA");

        System.out.println("Test Passed.");

    }

    /*

     * **********************************************************

     * Majority of the test case is above, below is just setup stuff

     * **********************************************************

     */

    public LargeBufs() throws Exception {

        sslc = getSSLContext(keyFilename, trustFilename);

    }

    /*

     * Create an initialized SSLContext to use for this test.

     */

    private SSLContext getSSLContext(String keyFile, String trustFile)

            throws Exception {

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

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

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

        ks.load(new FileInputStream(keyFile), passphrase);

        ts.load(new FileInputStream(trustFile), passphrase);

        KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");

        kmf.init(ks, passphrase);

        TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");

        tmf.init(ts);

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

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

        return sslCtx;

    }

    private void createBuffers() {

        // Size the buffers as appropriate.

        SSLSession session = ssle1.getSession();

        // The maximum application buffer should calculate like

        // appBufferMax = session.getApplicationBufferSize();

        // however, the getApplicationBufferSize() doesn't guarantee

        // that the ability to concume or produce applicaton data upto

        // the size. 16384 is the default JSSE implementation maximum

        // application size that could be consumed and produced.

        appBufferMax = 16384;

        netBufferMax = session.getPacketBufferSize();

        Random random = new Random();

        byte [] one = new byte [appBufferMax * 5 + OFFSET];

        byte [] two = new byte [appBufferMax * 5 + 2 * OFFSET];

        random.nextBytes(one);

        random.nextBytes(two);

        appOut1 = ByteBuffer.wrap(one);

        appOut2 = ByteBuffer.wrap(two);

        appIn1 = ByteBuffer.allocate(appBufferMax * 6);

        appIn2 = ByteBuffer.allocate(appBufferMax * 6);

        oneToTwo = ByteBuffer.allocateDirect(netBufferMax);

        twoToOne = ByteBuffer.allocateDirect(netBufferMax);

        System.out.println("Testing arrays of: " + one.length +

            " and " + two.length);

        log("AppOut1 = " + appOut1);

        log("AppOut2 = " + appOut2);

        log("");

    }

    private static void runDelegatedTasks(SSLEngineResult result,

            SSLEngine engine) throws Exception {

        if (result.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {

            Runnable runnable;

            while ((runnable = engine.getDelegatedTask()) != null) {

                log("running delegated task...");

                runnable.run();

            }

        }

    }

    private static boolean isEngineClosed(SSLEngine engine) {

        return (engine.isOutboundDone() && engine.isInboundDone());

    }

    private static void checkTransfer(ByteBuffer a, ByteBuffer b)

            throws Exception {

        a.flip();

        b.flip();

        if (!a.equals(b)) {

            throw new Exception("Data didn't transfer cleanly");

        } else {

            log("Data transferred cleanly");

        }

    }

    private static void log(String str) {

        if (debug) {

            System.out.println(str);

        }

    }

}