/*

 * Copyright (c) 2016, 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 7167293

 * @summary FtpURLConnection doesn't close FTP connection when FileNotFoundException is thrown

 * @library ../www/ftptest/

 * @build FtpServer FtpCommandHandler FtpAuthHandler FtpFileSystemHandler

 */

import java.io.FileNotFoundException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.InetAddress;

import java.net.URL;

import java.net.Proxy;

public class FtpURLConnectionLeak {

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

        InetAddress loopback = InetAddress.getLoopbackAddress();

        FtpServer server = new FtpServer(loopback, 0);

        server.setFileSystemHandler(new CustomFileSystemHandler("/"));

        server.setAuthHandler(new MyAuthHandler());

        String authority = server.getAuthority();

        server.start();

        URL url = new URL("ftp://" + authority + "/filedoesNotExist.txt");

        try (server) {

            for (int i = 0; i < 3; i++) {

                try {

                    InputStream stream = url.openConnection(Proxy.NO_PROXY).getInputStream();

                } catch (FileNotFoundException expected) {

                    // should always reach this point since the path does not exist

                    System.out.println("caught expected " + expected);

                    int times = 1;

                    do {

                        // give some time to close the connection...

                        System.out.println("sleeping... " + times);

                        Thread.sleep(times * 1000);

                    } while (server.activeClientsCount() > 0 && times++ < 5);

                    if (server.activeClientsCount() > 0) {

                        server.killClients();

                        throw new RuntimeException("URLConnection didn't close the" +

                                " FTP connection on FileNotFoundException");

                    }

                }

            }

        }

    }

    static class CustomFileSystemHandler implements FtpFileSystemHandler {

        private String currentDir;

        public CustomFileSystemHandler(String path) {

            currentDir = path;

        }

        @Override

        public boolean cd(String path) {

            currentDir = path;

            return true;

        }

        @Override

        public boolean cdUp() {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public String pwd() {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public boolean fileExists(String name) {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public InputStream getFile(String name) {

            return null; //return null so that server will return 550 File not found.

        }

        @Override

        public long getFileSize(String name) {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public InputStream listCurrentDir() {

            return null;

        }

        @Override

        public OutputStream putFile(String name) {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public boolean removeFile(String name) {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public boolean mkdir(String name) {

            throw new UnsupportedOperationException("Not supported yet.");

        }

        @Override

        public boolean rename(String from, String to) {

            throw new UnsupportedOperationException("Not supported yet.");

        }

    }

    static class MyAuthHandler implements FtpAuthHandler {

        @Override

        public int authType() {

            return 0;

        }

        @Override

        public boolean authenticate(String user, String password) {

            return true;

        }

        @Override

        public boolean authenticate(String user, String password, String account) {

            return true;

        }

    }

}