1 /* 2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.incubator.http; 27 28 import java.security.AccessControlContext; 29 import java.security.AccessController; 30 import java.security.PrivilegedAction; 31 import java.util.Objects; 32 import java.util.concurrent.Executor; 33 34 /** 35 * Executes tasks within a given access control context, and by a given executor. 36 */ 37 class PrivilegedExecutor implements Executor { 38 39 /** The underlying executor. May be provided by the user. */ 40 final Executor executor; 41 /** The ACC to execute the tasks within. */ 42 final AccessControlContext acc; 43 44 public PrivilegedExecutor(Executor executor, AccessControlContext acc) { 45 Objects.requireNonNull(executor); 46 Objects.requireNonNull(acc); 47 this.executor = executor; 48 this.acc = acc; 49 } 50 51 private static class PrivilegedRunnable implements Runnable { 52 private final Runnable r; 53 private final AccessControlContext acc; 54 PrivilegedRunnable(Runnable r, AccessControlContext acc) { 55 this.r = r; 56 this.acc = acc; 57 } 58 @Override 59 public void run() { 60 PrivilegedAction<Void> pa = () -> { r.run(); return null; }; 61 AccessController.doPrivileged(pa, acc); 62 } 63 } 64 65 @Override 66 public void execute(Runnable r) { 67 executor.execute(new PrivilegedRunnable(r, acc)); 68 } 69 }