| /* |
| * Copyright (c) 2015, 2016, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| package jdk.incubator.http; |
| |
| import java.net.SocketPermission; |
| import java.security.AccessControlContext; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.concurrent.Executor; |
| import jdk.internal.misc.InnocuousThread; |
| |
| /** |
| * Wraps the supplied user Executor |
| * |
| * when a Security manager set, the correct access control context is used to execute task |
| * |
| * The access control context is captured at creation time of this object |
| */ |
| class ExecutorWrapper { |
| |
| final Executor userExecutor; // the undeerlying executor provided by user |
| final Executor executor; // the executur which wraps the user's one |
| final AccessControlContext acc; |
| final ClassLoader ccl; |
| |
| public ExecutorWrapper(Executor userExecutor, AccessControlContext acc) { |
| this.userExecutor = userExecutor; |
| this.acc = acc; |
| this.ccl = getCCL(); |
| if (System.getSecurityManager() == null) { |
| this.executor = userExecutor; |
| } else { |
| this.executor = this::run; |
| } |
| } |
| |
| private ClassLoader getCCL() { |
| return AccessController.doPrivileged( |
| (PrivilegedAction<ClassLoader>) () -> { |
| return Thread.currentThread().getContextClassLoader(); |
| } |
| ); |
| } |
| |
| /** |
| * This is only used for the default HttpClient to deal with |
| * different application contexts that might be using it. |
| * The default client uses InnocuousThreads in its Executor. |
| */ |
| private void prepareThread() { |
| final Thread me = Thread.currentThread(); |
| if (!(me instanceof InnocuousThread)) |
| return; |
| InnocuousThread innocuousMe = (InnocuousThread)me; |
| |
| AccessController.doPrivileged( |
| (PrivilegedAction<Void>) () -> { |
| innocuousMe.setContextClassLoader(ccl); |
| innocuousMe.eraseThreadLocals(); |
| return null; |
| } |
| ); |
| } |
| |
| |
| void run(Runnable r) { |
| prepareThread(); |
| try { |
| userExecutor.execute(r); // all throwables must be caught |
| } catch (Throwable t) { |
| t.printStackTrace(); |
| } |
| } |
| |
| public Executor userExecutor() { |
| return userExecutor; |
| } |
| |
| public Executor executor() { |
| return executor; |
| } |
| } |