/*

 * Copyright (c) 2019, 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 8221481

 * @compile/module=java.base java/net/PlatformSocketImpl.java

 * @run testng/othervm BadUsages

 * @summary Test the platform SocketImpl when used in unintended ways

 */

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.net.ServerSocket;

import java.net.SocketAddress;

import java.net.SocketException;

import java.net.SocketImpl;

import java.net.SocketOption;

import java.net.SocketOptions;

import java.net.StandardSocketOptions;

import java.util.Set;

import java.net.PlatformSocketImpl;  // test helper

import org.testng.annotations.Test;

import static org.testng.Assert.*;

/**

 * SocketImpl does not specify how the SocketImpl behaves when used in ways

 * that are not intended, e.g. invoking socket operations before the socket is

 * created or trying to establish a connection after the socket is connected or

 * closed.

 *

 * This test exercises the platform SocketImpl to test that it is reliable, and

 * throws reasonable exceptions, for these scenarios.

 */

@Test

public class BadUsages {

    /**

     * Test create when already created.

     */

    public void testCreate1() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(IOException.class, () -> impl.create(true));

        }

    }

    /**

     * Test create when closed.

     */

    public void testCreate2() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class, () -> impl.create(true));

    }

    /**

     * Test connect when not created.

     */

    public void testConnect1() throws IOException {

        try (var ss = new ServerSocket(0)) {

            var impl = new PlatformSocketImpl(false);

            var address = ss.getInetAddress();

            int port = ss.getLocalPort();

            expectThrows(IOException.class, () -> impl.connect(address, port));

        }

    }

    /**

     * Test connect with unsupported address type.

     */

    public void testConnect2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            var remote = new SocketAddress() { };

            expectThrows(IOException.class, () -> impl.connect(remote, 0));

        }

    }

    /**

     * Test connect with an unresolved address.

     */

    public void testConnect3() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            var remote = new InetSocketAddress("blah-blah.blah-blah", 80);

            expectThrows(IOException.class, () -> impl.connect(remote, 0));

        }

    }

    /**

     * Test connect when already connected.

     */

    public void testConnect4() throws IOException {

        try (var ss = new ServerSocket();

             var impl = new PlatformSocketImpl(false)) {

            var loopback = InetAddress.getLoopbackAddress();

            ss.bind(new InetSocketAddress(loopback, 0));

            impl.create(true);

            int port = ss.getLocalPort();

            impl.connect(loopback, port);

            expectThrows(IOException.class, () -> impl.connect(loopback, port));

        }

    }

    /**

     * Test connect when closed.

     */

    public void testConnect5() throws IOException {

        try (var ss = new ServerSocket(0)) {

            var impl = new PlatformSocketImpl(false);

            impl.close();

            String host = ss.getInetAddress().getHostAddress();

            int port = ss.getLocalPort();

            expectThrows(IOException.class, () -> impl.connect(host, port));

        }

    }

    /**

     * Test bind when not created.

     */

    public void testBind1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        var loopback = InetAddress.getLoopbackAddress();

        expectThrows(IOException.class, () -> impl.bind(loopback, 0));

    }

    /**

     * Test bind when already bound.

     */

    public void testBind2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            var loopback = InetAddress.getLoopbackAddress();

            impl.bind(loopback, 0);

            expectThrows(IOException.class, () -> impl.bind(loopback, 0));

        }

    }

    /**

     * Test bind when connected.

     */

    public void testBind3() throws IOException {

        try (var ss = new ServerSocket();

             var impl = new PlatformSocketImpl(false)) {

            var loopback = InetAddress.getLoopbackAddress();

            ss.bind(new InetSocketAddress(loopback, 0));

            impl.create(true);

            impl.connect(ss.getLocalSocketAddress(), 0);

            expectThrows(IOException.class, () -> impl.bind(loopback, 0));

        }

    }

    /**

     * Test bind when closed.

     */

    public void testBind4() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        var loopback = InetAddress.getLoopbackAddress();

        expectThrows(IOException.class, () -> impl.bind(loopback, 0));

    }

    /**

     * Test listen when not created.

     */

    public void testListen1() {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.listen(16));

    }

    /**

     * Test listen when not bound.

     */

    public void testListen2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(IOException.class, () -> impl.listen(16));

        }

    }

    /**

     * Test listen when closed.

     */

    public void testListen3() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class, () -> impl.listen(16));

    }

    /**

     * Test accept when not created.

     */

    public void testAccept1() throws IOException {

        var impl = new PlatformSocketImpl(true);

        var si = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.accept(si));

    }

    /**

     * Test accept when not bound.

     */

    public void testAccept2() throws IOException {

        try (var impl = new PlatformSocketImpl(true)) {

            impl.create(true);

            var si = new PlatformSocketImpl(false);

            expectThrows(IOException.class, () -> impl.accept(si));

        }

    }

    /**

     * Test accept when not a stream socket.

     */

    public void testAccept3() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(false);

            impl.bind(InetAddress.getLoopbackAddress(), 0);

            var si = new PlatformSocketImpl(false);

            expectThrows(IOException.class, () -> impl.accept(si));

        }

    }

    /**

     * Test accept when closed.

     */

    public void testAccept4() throws IOException {

        var impl = new PlatformSocketImpl(true);

        impl.close();

        var si = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.accept(si));

    }

    /**

     * Test accept with SocketImpl that is already created.

     */

    public void testAccept5() throws IOException {

        try (var impl = new PlatformSocketImpl(true);

             var si = new PlatformSocketImpl(false)) {

            impl.create(true);

            impl.bind(InetAddress.getLoopbackAddress(), 0);

            si.create(true);

            expectThrows(IOException.class, () -> impl.accept(si));

        }

    }

    /**

     * Test accept with SocketImpl that is closed.

     */

    public void testAccept6() throws IOException {

        try (var impl = new PlatformSocketImpl(true);

             var si = new PlatformSocketImpl(false)) {

            impl.create(true);

            impl.bind(InetAddress.getLoopbackAddress(), 0);

            si.create(true);

            si.close();

            expectThrows(IOException.class, () -> impl.accept(si));

        }

    }

    /**

     * Test available when not created.

     */

    public void testAvailable1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.available());

    }

    /**

     * Test available when created but not connected.

     */

    public void testAvailable2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(IOException.class, () -> impl.available());

        }

    }

    /**

     * Test available when closed.

     */

    public void testAvailable3() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class, () -> impl.available());

    }

    /**

     * Test setOption when not created.

     */

    public void testSetOption1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class,

                     () -> impl.setOption(StandardSocketOptions.SO_REUSEADDR, true));

        // legacy

        expectThrows(SocketException.class,

                     () -> impl.setOption(SocketOptions.SO_REUSEADDR, true));

    }

    /**

     * Test setOption when closed.

     */

    public void testSetOption2() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class,

                     () -> impl.setOption(StandardSocketOptions.SO_REUSEADDR, true));

        // legacy

        expectThrows(SocketException.class,

                     () -> impl.setOption(SocketOptions.SO_REUSEADDR, true));

    }

    /**

     * Test setOption with unsupported option.

     */

    public void testSetOption3() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            var opt = new SocketOption<String>() {

                @Override public String name() { return "birthday"; }

                @Override public Class<String> type() { return String.class; }

            };

            expectThrows(UnsupportedOperationException.class, () -> impl.setOption(opt, ""));

            // legacy

            expectThrows(SocketException.class, () -> impl.setOption(-1, ""));

        }

    }

    /**

     * Test setOption(int, Object) with invalid values.

     */

    public void testSetOption4() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(SocketException.class,

                         () -> impl.setOption(SocketOptions.SO_REUSEADDR, -1));

            expectThrows(SocketException.class,

                         () -> impl.setOption(SocketOptions.SO_TIMEOUT, -1));

            expectThrows(SocketException.class,

                         () -> impl.setOption(SocketOptions.SO_SNDBUF, -1));

            expectThrows(SocketException.class,

                         () -> impl.setOption(SocketOptions.SO_RCVBUF, -1));

        }

    }

    /**

     * Test getOption when not created.

     */

    public void testGetOption1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class,

                     () -> impl.getOption(StandardSocketOptions.SO_REUSEADDR));

        expectThrows(SocketException.class,

                     () -> impl.getOption(-1));

    }

    /**

     * Test getOption when closed.

     */

    public void testGetOption2() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class,

                     () -> impl.getOption(StandardSocketOptions.SO_REUSEADDR));

        expectThrows(SocketException.class,

                     () -> impl.getOption(SocketOptions.SO_REUSEADDR));

    }

    /**

     * Test getOption with unsupported option.

     */

    public void testGetOption3() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            var opt = new SocketOption<String>() {

                @Override public String name() { return "birthday"; }

                @Override public Class<String> type() { return String.class; }

            };

            expectThrows(UnsupportedOperationException.class, () -> impl.getOption(opt));

            expectThrows(SocketException.class, () -> impl.getOption(-1));

        }

    }

    /**

     * Test shutdownInput when not created.

     */

    public void testShutdownInput1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.shutdownInput());

    }

    /**

     * Test shutdownInput when not connected.

     */

    public void testShutdownInput2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(IOException.class, () -> impl.shutdownInput());

        }

    }

    /**

     * Test shutdownInput when closed.

     */

    public void testShutdownInput3() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class, () -> impl.shutdownInput());

    }

    /**

     * Test shutdownOutput when not created.

     */

    public void testShutdownOutput1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.shutdownOutput());

    }

    /**

     * Test shutdownOutput when not connected.

     */

    public void testShutdownOutput2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(IOException.class, () -> impl.shutdownOutput());

        }

    }

    /**

     * Test shutdownOutput when closed.

     */

    public void testShutdownOutput3() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class, () -> impl.shutdownOutput());

    }

    /**

     * Test sendUrgentData when not created.

     */

    public void testSendUrgentData1() throws IOException {

        var impl = new PlatformSocketImpl(false);

        expectThrows(IOException.class, () -> impl.sendUrgentData(0));

    }

    /**

     * Test sendUrgentData when not connected.

     */

    public void testSendUrgentData2() throws IOException {

        try (var impl = new PlatformSocketImpl(false)) {

            impl.create(true);

            expectThrows(IOException.class, () -> impl.sendUrgentData(0));

        }

    }

    /**

     * Test sendUrgentData when closed.

     */

    public void testSendUrgentData3() throws IOException {

        var impl = new PlatformSocketImpl(false);

        impl.close();

        expectThrows(IOException.class, () -> impl.sendUrgentData(0));

    }

}