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Java example source code file (NTLMTest.java)

This example Java source code file (NTLMTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

content-length, failed, httpurlconnection, ioexception, messageheader, net, network, nullauthenticator, proxy, proxy\-authenticate, required\\r\\n, serversocket, string, thread, tlrmtvntuaacaaaaaaaaacgaaaabggaau3j2tm9uy2uaaaaaaaaaaa\=\=\\r\\n\\r\\n, unauthorized\\r\\n, www

The NTLMTest.java Java example source code

/*
 * Copyright (c) 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 6520665 6357133
 * @run main/othervm NTLMTest
 * @summary 6520665 & 6357133: NTLM authentication issues.
 */

import java.net.*;
import java.io.*;
import sun.net.www.MessageHeader;

public class NTLMTest
{
    public static void main(String[] args) {
        Authenticator.setDefault(new NullAuthenticator());

        try {
            // Test with direct connection.
            ServerSocket serverSS = new ServerSocket(0);
            startServer(serverSS, false);
            runClient(Proxy.NO_PROXY, serverSS.getLocalPort());

            // Test with proxy.
            serverSS = new ServerSocket(0);
            startServer(serverSS, true /*proxy*/);
            SocketAddress proxyAddr = new InetSocketAddress("localhost", serverSS.getLocalPort());
            runClient(new Proxy(java.net.Proxy.Type.HTTP, proxyAddr), 8888);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    static void runClient(Proxy proxy, int serverPort) {
        try {
            String urlStr = "http://localhost:" + serverPort + "/";
            URL url = new URL(urlStr);
            HttpURLConnection uc = (HttpURLConnection) url.openConnection(proxy);
            uc.getInputStream();

        } catch (ProtocolException e) {
            /* java.net.ProtocolException: Server redirected too many  times (20) */
            throw new RuntimeException("Failed: ProtocolException", e);
        } catch (IOException ioe) {
            /* IOException is OK. We are expecting "java.io.IOException: Server
             * returned HTTP response code: 401 for URL: ..."
             */
            //ioe.printStackTrace();
        } catch (NullPointerException npe) {
            throw new RuntimeException("Failed: NPE thrown ", npe);
        }
    }

    static String[] serverResp = new String[] {
                "HTTP/1.1 401 Unauthorized\r\n" +
                "Content-Length: 0\r\n" +
                "WWW-Authenticate: NTLM\r\n\r\n",

                "HTTP/1.1 401 Unauthorized\r\n" +
                "Content-Length: 0\r\n" +
                "WWW-Authenticate: NTLM TlRMTVNTUAACAAAAAAAAACgAAAABggAAU3J2Tm9uY2UAAAAAAAAAAA==\r\n\r\n"};

    static String[] proxyResp = new String[] {
                "HTTP/1.1 407 Proxy Authentication Required\r\n" +
                "Content-Length: 0\r\n" +
                "Proxy-Authenticate: NTLM\r\n\r\n",

                "HTTP/1.1 407 Proxy Authentication Required\r\n" +
                "Content-Length: 0\r\n" +
                "Proxy-Authenticate: NTLM TlRMTVNTUAACAAAAAAAAACgAAAABggAAU3J2Tm9uY2UAAAAAAAAAAA==\r\n\r\n"};

    static void startServer(ServerSocket serverSS, boolean proxy) {
        final ServerSocket ss = serverSS;
        final boolean isProxy = proxy;

        Thread thread = new Thread(new Runnable() {
            public void run() {
                boolean doing2ndStageNTLM = false;
                while (true) {
                    try {
                        Socket s = ss.accept();
                        if (!doing2ndStageNTLM) {
                            handleConnection(s, isProxy ? proxyResp : serverResp, 0, 1);
                            doing2ndStageNTLM = true;
                        } else {
                            handleConnection(s, isProxy ? proxyResp : serverResp, 1, 2);
                            doing2ndStageNTLM = false;
                        }
                        connectionCount++;
                        //System.out.println("connectionCount = " + connectionCount);

                    } catch (IOException ioe) {
                        ioe.printStackTrace();
                    }
                }
            } });
            thread.setDaemon(true);
            thread.start();

    }

    static int connectionCount = 0;

    static void handleConnection(Socket s, String[] resp, int start, int end) {
        try {
            OutputStream os = s.getOutputStream();

            for (int i=start; i<end; i++) {
                MessageHeader header = new MessageHeader (s.getInputStream());
                //System.out.println("Input :" + header);
                //System.out.println("Output:" + resp[i]);
                os.write(resp[i].getBytes("ASCII"));
            }

            s.close();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }

    static class NullAuthenticator extends java.net.Authenticator
    {
        public int count = 0;

        protected PasswordAuthentication getPasswordAuthentication() {
            count++;
            System.out.println("NullAuthenticator.getPasswordAuthentication called " + count + " times");

            return null;
        }

        public int getCallCount() {
            return count;
        }
    }

}

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