/*

 * Copyright (c) 2004, 2007, 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 5019096

 * @summary Add scatter/gather APIs for SSLEngine

 *

 */

import javax.net.ssl.*;

import javax.net.ssl.SSLEngineResult.*;

import java.io.*;

import java.security.*;

import java.nio.*;

public class Arrays {

    private static boolean debug = false;

    private SSLContext sslc;

    private SSLEngine ssle1;    // client

    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 [] appOutArray1;

    private ByteBuffer [] appInArray1;

    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

    /*

     * 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() throws Exception {

        boolean dataDone = false;

        createSSLEngines();

        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(appOutArray1, oneToTwo);

            result2 = ssle2.wrap(appOut2, twoToOne);

            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, appInArray1);

            result2 = ssle2.unwrap(oneToTwo, appIn2);

            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) {

                boolean done = true;

                for (int i = 0; i < appOutArray1.length; i++) {

                    if (appOutArray1[i].remaining() != 0) {

                        done = false;

                    }

                }

                if (appOut2.remaining() != 0) {

                    done = false;

                }

                if (done) {

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

                    for (int i = 0; i < appOutArray1.length; i++) {

                        appOutArray1[i].rewind();

                    }

                    ssle1.closeOutbound();

                    dataDone = true;

                }

            }

        }

        checkTransfer(appOutArray1,  appIn2);

        appInArray1[appInArray1.length - 1].limit(

            appInArray1[appInArray1.length - 1].position());

        checkTransfer(appInArray1, appOut2);

    }

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

        Arrays test;

        test = new Arrays();

        test.createSSLEngines();

        test.runTest();

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

    }

    /*

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

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

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

     */

    public Arrays() 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();

        int appBufferMax = session.getApplicationBufferSize();

        int netBufferMax = session.getPacketBufferSize();

        appIn2 = ByteBuffer.allocateDirect(appBufferMax + 50);

        oneToTwo = ByteBuffer.allocateDirect(netBufferMax);

        twoToOne = ByteBuffer.allocateDirect(netBufferMax);

        ByteBuffer strBB = ByteBuffer.wrap(

            "Hi Engine2, I'm SSLEngine1, So Be it" .getBytes());

        strBB.position(0);

        strBB.limit(5);

        ByteBuffer appOut1a = strBB.slice();

        strBB.position(5);

        strBB.limit(15);

        ByteBuffer appOut1b = strBB.slice();

        strBB.position(15);

        strBB.limit(strBB.capacity());

        ByteBuffer appOut1c = strBB.slice();

        strBB.rewind();

        appOutArray1 = new ByteBuffer [] { appOut1a, appOut1b, appOut1c };

        appOut2 = ByteBuffer.wrap("Hello Engine1, I'm SSLEngine2".getBytes());

        ByteBuffer appIn1a = ByteBuffer.allocateDirect(5);

        ByteBuffer appIn1b = ByteBuffer.allocateDirect(10);

        ByteBuffer appIn1c = ByteBuffer.allocateDirect(appBufferMax + 50);

        appInArray1 = new ByteBuffer [] { appIn1a, appIn1b, appIn1c };

        log("AppOut1a = " + appOut1a);

        log("AppOut1a = " + appOut1b);

        log("AppOut1a = " + appOut1c);

        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 {

        b.flip();

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

            a[i].rewind();

            b.limit(b.position() + a[i].remaining());

            if (!a[i].equals(b)) {

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

            }

            b.position(b.limit());

        }

        log("Data transferred cleanly");

    }

    private static void log(String str) {

        if (debug) {

            System.out.println(str);

        }

    }

}