/*
 * 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
 *
 * Check to see if the args are being parsed properly.
 *
 */

import javax.net.ssl.*;
import javax.net.ssl.SSLEngineResult.*;
import java.io.*;
import java.security.*;
import java.nio.*;

public class ArgCheck {

    private static boolean debug = false;

    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 static void tryNull(SSLEngine ssle, ByteBuffer appData,
            ByteBuffer netData) throws Exception {
        try {
            ssle.wrap(appData, netData);
            throw new Exception();
        } catch (IllegalArgumentException e) {
            System.out.println("Caught right exception");
        }

        try {
            ssle.unwrap(netData, appData);
            throw new Exception();
        } catch (IllegalArgumentException e) {
            System.out.println("Caught right exception");
        }
    }

    private static void tryNullArray(SSLEngine ssle, ByteBuffer [] appData,
            ByteBuffer netData) throws Exception {
        try {
            ssle.wrap(appData, netData);
            throw new Exception();
        } catch (IllegalArgumentException e) {
            System.out.println("Caught right exception");
        }

        try {
            ssle.unwrap(netData, appData);
            throw new Exception();
        } catch (IllegalArgumentException e) {
            System.out.println("Caught right exception");
        }
    }

    private static void tryNullArrayLen(SSLEngine ssle, ByteBuffer [] appData,
            int offset, int len, ByteBuffer netData) throws Exception {
        try {
            ssle.wrap(appData, offset, len, netData);
            throw new Exception();
        } catch (IllegalArgumentException e) {
            System.out.println("Caught right exception");
        }

        try {
            ssle.unwrap(netData, appData, offset, len);
            throw new Exception();
        } catch (IllegalArgumentException e) {
            System.out.println("Caught right exception");
        }
    }

    private static void tryReadOnly(SSLEngine ssle, ByteBuffer [] appData,
            int offset, int len, ByteBuffer netData) throws Exception {
        try {
            if (netData.isReadOnly()) {
                ssle.wrap(appData, offset, len, netData);
                throw new Exception();
            }
        } catch (ReadOnlyBufferException e) {
            System.out.println("Caught right exception");
        }

        try {
            if (!netData.isReadOnly()) {
                ssle.unwrap(netData, appData, offset, len);
                throw new Exception();
            }
        } catch (ReadOnlyBufferException e) {
            System.out.println("Caught right exception");
        }
    }

    private static void tryOutOfBounds(SSLEngine ssle, ByteBuffer [] appData,
            int offset, int len, ByteBuffer netData) throws Exception {
        try {
            ssle.wrap(appData, offset, len, netData);
            throw new Exception();
        } catch (IndexOutOfBoundsException e) {
            System.out.println("Caught right exception");
        }

        try {
            ssle.unwrap(netData, appData, offset, len);
            throw new Exception();
        } catch (IndexOutOfBoundsException e) {
            System.out.println("Caught right exception");
        }
    }

    private static void trySmallBufs(SSLEngine ssle,
            ByteBuffer appBB, ByteBuffer smallNetBB,
            ByteBuffer smallAppBB, ByteBuffer netBB) throws Exception {

        SSLEngineResult res = ssle.wrap(appBB, smallNetBB);
        if (res.getStatus() != Status.BUFFER_OVERFLOW) {
            throw new Exception();
        }

        // For unwrap(), the BUFFER_OVERFLOW will not be generated
        // until received SSL/TLS application data.
        // Test test/javax/net/ssl/NewAPIs/SSLEngine/LargePacket will check
        // BUFFER_OVERFLOW/UNDERFLOW for both wrap() and unwrap().
        //
        //res = ssle.unwrap(netBB, smallAppBB);
        //if (res.getStatus() != Status.BUFFER_OVERFLOW) {
        //    throw new Exception();
        //}
    }

    private static void trySmallBufsArray(SSLEngine ssle,
            ByteBuffer [] appBB, ByteBuffer smallNetBB,
            ByteBuffer [] smallAppBB, ByteBuffer netBB) throws Exception {

        SSLEngineResult res = ssle.wrap(appBB, 0, appBB.length, smallNetBB);
        if (res.getStatus() != Status.BUFFER_OVERFLOW) {
            throw new Exception();
        }

        // For unwrap(), the BUFFER_OVERFLOW will not be generated
        // until received SSL/TLS application data.
        // Test test/javax/net/ssl/NewAPIs/SSLEngine/LargePacket will check
        // BUFFER_OVERFLOW/UNDERFLOW for both wrap() and unwrap().
        //
        //res = ssle.unwrap(netBB, smallAppBB, 0, appBB.length);
        //if (res.getStatus() != Status.BUFFER_OVERFLOW) {
        //    throw new Exception();
        //}
    }

    private static void runTest(SSLEngine ssle) throws Exception {
        ByteBuffer [] bufs;

        ByteBuffer roBB = ByteBuffer.allocate(40).asReadOnlyBuffer();

        ByteBuffer bb1K = ByteBuffer.allocate(1024);
        ByteBuffer bb2K = ByteBuffer.allocate(2048);
        ByteBuffer bb4K = ByteBuffer.allocate(5096);
        ByteBuffer bb8K = ByteBuffer.allocate(10192);

        SSLSession ssls = ssle.getSession();

        ByteBuffer netBBMinus1 = ByteBuffer.allocate(
            ssls.getPacketBufferSize() - 1);
        ByteBuffer appBBMinus1 = ByteBuffer.allocate(
            ssls.getApplicationBufferSize() - 1);

        ByteBuffer bbNet = ByteBuffer.allocate(
            ssls.getPacketBufferSize());
        ByteBuffer bbApp = ByteBuffer.allocate(
            ssls.getApplicationBufferSize());

        bufs = new ByteBuffer [] { bb1K, bb2K, bb4K, bb8K};

        tryNull(ssle, null, null);
        tryNull(ssle, bb1K, null);
        tryNull(ssle, null, bb1K);

        tryNullArray(ssle, null, null);
        tryNullArray(ssle, bufs, null);
        tryNullArray(ssle, null, bb1K);

        tryNullArrayLen(ssle, null, 0, 4, null);
        tryNullArrayLen(ssle, bufs, 0, 4, null);
        tryNullArrayLen(ssle, null, 0, 4, bb1K);

        bufs[2] = null;
        tryNullArray(ssle, bufs, bb1K);

        bufs[2] = bb4K;
        tryReadOnly(ssle, bufs, 0, 4, roBB);

        bufs[2] = roBB;
        tryReadOnly(ssle, bufs, 0, 4, bb4K);

        bufs[2] = bb4K;
        tryOutOfBounds(ssle, bufs, -1, 0, bb1K);
        tryOutOfBounds(ssle, bufs, 0, -1, bb1K);
        tryOutOfBounds(ssle, bufs, 0, bufs.length + 1, bb1K);
        tryOutOfBounds(ssle, bufs, bufs.length, 1, bb1K);

        bufs[3].position(bufs[3].limit());
        trySmallBufs(ssle, bb1K, netBBMinus1, appBBMinus1, bb1K);
        trySmallBufsArray(ssle, bufs, netBBMinus1, bufs, bb1K);
        bufs[3].rewind();

    }

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

        SSLEngine ssle = createSSLEngine(keyFilename, trustFilename);
        runTest(ssle);

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

    /*
     * Create an initialized SSLContext to use for this test.
     */
    static private SSLEngine createSSLEngine(String keyFile, String trustFile)
            throws Exception {

        SSLEngine ssle;

        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);

        ssle = sslCtx.createSSLEngine("client", 1001);
        ssle.setUseClientMode(true);

        return ssle;
    }
}