| /* |
| * Copyright (c) 2011, 2017, 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. |
| */ |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.OutputStreamWriter; |
| import java.io.PrintWriter; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ConcurrentModificationException; |
| import java.util.Hashtable; |
| import javax.naming.Context; |
| import javax.naming.InitialContext; |
| import javax.naming.NamingException; |
| import javax.naming.event.EventContext; |
| import javax.naming.event.NamingEvent; |
| import javax.naming.event.NamingExceptionEvent; |
| import javax.naming.event.NamingListener; |
| import javax.naming.event.ObjectChangeListener; |
| |
| /** |
| * @test |
| * @bug 8176192 |
| * @summary Incorrect usage of Iterator in Java 8 In com.sun.jndi.ldap. |
| * EventSupport.removeNamingListener |
| * @modules java.naming |
| * @run main RemoveNamingListenerTest |
| */ |
| public class RemoveNamingListenerTest { |
| |
| private static volatile Exception exception; |
| |
| public static void main(String args[]) throws Exception { |
| // start the LDAP server |
| TestLDAPServer server = new TestLDAPServer(); |
| server.start(); |
| |
| // Set up environment for creating initial context |
| Hashtable<String, Object> env = new Hashtable<>(3); |
| env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory"); |
| env.put(Context.PROVIDER_URL, "ldap://localhost:" + server.getPort() + "/o=example"); |
| env.put("com.sun.jndi.ldap.connect.timeout", "2000"); |
| EventContext ctx = null; |
| |
| try { |
| ctx = (EventContext) (new InitialContext(env).lookup("")); |
| String target = "cn=Vyom Tewari"; |
| |
| // Create listeners |
| NamingListener oneListener = new SampleListener(); |
| NamingListener objListener = new SampleListener(); |
| NamingListener subListener = new SampleListener(); |
| |
| // Register listeners using different scopes |
| ctx.addNamingListener(target, EventContext.ONELEVEL_SCOPE, oneListener); |
| ctx.addNamingListener(target, EventContext.OBJECT_SCOPE, objListener); |
| ctx.addNamingListener(target, EventContext.SUBTREE_SCOPE, subListener); |
| |
| //remove a listener in different thread |
| Thread t = new Thread(new RemoveNamingListener(ctx, subListener)); |
| t.start(); |
| t.join(); |
| |
| if (exception != null) { |
| throw exception; |
| } |
| System.out.println("Test run OK!!!"); |
| } finally { |
| if (ctx != null) { |
| ctx.close(); |
| } |
| server.stopServer(); |
| } |
| } |
| |
| /** |
| * Helper thread that removes the naming listener. |
| */ |
| static class RemoveNamingListener implements Runnable { |
| |
| final EventContext ctx; |
| final NamingListener listener; |
| |
| RemoveNamingListener(EventContext ctx, NamingListener listener) { |
| this.ctx = ctx; |
| this.listener = listener; |
| } |
| |
| @Override |
| public void run() { |
| try { |
| ctx.removeNamingListener(listener); |
| } catch (NamingException | ConcurrentModificationException ex) { |
| exception = ex; |
| } |
| } |
| } |
| |
| static class SampleListener implements ObjectChangeListener { |
| |
| @Override |
| public void objectChanged(NamingEvent ne) { |
| //do nothing |
| } |
| |
| @Override |
| public void namingExceptionThrown(NamingExceptionEvent nee) { |
| //do nothing |
| } |
| } |
| } |
| |
| class TestLDAPServer extends Thread { |
| |
| private final int LDAP_PORT; |
| private final ServerSocket serverSocket; |
| private volatile boolean isRunning; |
| |
| TestLDAPServer() throws IOException { |
| serverSocket = new ServerSocket(0); |
| isRunning = true; |
| LDAP_PORT = serverSocket.getLocalPort(); |
| setDaemon(true); |
| } |
| |
| public int getPort() { |
| return LDAP_PORT; |
| } |
| |
| public void stopServer() { |
| isRunning = false; |
| if (serverSocket != null && !serverSocket.isClosed()) { |
| try { |
| // this will cause ServerSocket.accept() to throw SocketException. |
| serverSocket.close(); |
| } catch (IOException ignored) { |
| } |
| } |
| } |
| |
| @Override |
| public void run() { |
| try { |
| while (isRunning) { |
| Socket clientSocket = serverSocket.accept(); |
| Thread handler = new Thread(new LDAPServerHandler(clientSocket)); |
| handler.setDaemon(true); |
| handler.start(); |
| } |
| } catch (IOException iOException) { |
| //do not throw exception if server is not running. |
| if (isRunning) { |
| throw new RuntimeException(iOException); |
| } |
| } finally { |
| stopServer(); |
| } |
| } |
| } |
| |
| class LDAPServerHandler implements Runnable { |
| |
| private final Socket clientSocket; |
| |
| public LDAPServerHandler(final Socket clientSocket) { |
| this.clientSocket = clientSocket; |
| } |
| |
| @Override |
| public void run() { |
| BufferedInputStream in = null; |
| PrintWriter out = null; |
| byte[] bindResponse = {0x30, 0x0C, 0x02, 0x01, 0x01, 0x61, 0x07, 0x0A, 0x01, 0x00, 0x04, 0x00, 0x04, 0x00}; |
| byte[] searchResponse = {0x30, 0x0C, 0x02, 0x01, 0x02, 0x65, 0x07, 0x0A, 0x01, 0x00, 0x04, 0x00, 0x04, 0x00}; |
| try { |
| in = new BufferedInputStream(clientSocket.getInputStream()); |
| out = new PrintWriter(new OutputStreamWriter( |
| clientSocket.getOutputStream(), StandardCharsets.UTF_8), true); |
| while (true) { |
| |
| // Read the LDAP BindRequest |
| while (in.read() != -1) { |
| in.skip(in.available()); |
| break; |
| } |
| |
| // Write an LDAP BindResponse |
| out.write(new String(bindResponse)); |
| out.flush(); |
| |
| // Read the LDAP SearchRequest |
| while (in.read() != -1) { |
| in.skip(in.available()); |
| break; |
| } |
| |
| // Write an LDAP SearchResponse |
| out.write(new String(searchResponse)); |
| out.flush(); |
| } |
| } catch (IOException iOException) { |
| throw new RuntimeException(iOException); |
| } finally { |
| if (in != null) { |
| try { |
| in.close(); |
| } catch (IOException ignored) { |
| } |
| } |
| if (out != null) { |
| out.close(); |
| } |
| if (clientSocket != null) { |
| try { |
| clientSocket.close(); |
| } catch (IOException ignored) { |
| } |
| } |
| } |
| } |
| } |