| /* |
| * Copyright (c) 1997, 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. 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 com.sun.istack.internal.tools; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| /** |
| * Class defined for safe calls of getClassLoader methods of any kind (context/system/class |
| * classloader. This MUST be package private and defined in every package which |
| * uses such invocations. |
| * @author snajper |
| */ |
| class SecureLoader { |
| |
| static ClassLoader getContextClassLoader() { |
| if (System.getSecurityManager() == null) { |
| return Thread.currentThread().getContextClassLoader(); |
| } else { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| @Override |
| public ClassLoader run() { |
| return Thread.currentThread().getContextClassLoader(); |
| } |
| }); |
| } |
| } |
| |
| static ClassLoader getClassClassLoader(final Class c) { |
| if (System.getSecurityManager() == null) { |
| return c.getClassLoader(); |
| } else { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| @Override |
| public ClassLoader run() { |
| return c.getClassLoader(); |
| } |
| }); |
| } |
| } |
| |
| static ClassLoader getSystemClassLoader() { |
| if (System.getSecurityManager() == null) { |
| return ClassLoader.getSystemClassLoader(); |
| } else { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| @Override |
| public ClassLoader run() { |
| return ClassLoader.getSystemClassLoader(); |
| } |
| }); |
| } |
| } |
| |
| static ClassLoader getParentClassLoader(final ClassLoader cl) { |
| if (System.getSecurityManager() == null) { |
| return cl.getParent(); |
| } else { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| @Override |
| public ClassLoader run() { |
| return cl.getParent(); |
| } |
| }); |
| } |
| } |
| |
| static void setContextClassLoader(final ClassLoader cl) { |
| if (System.getSecurityManager() == null) { |
| Thread.currentThread().setContextClassLoader(cl); |
| } else { |
| AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| @Override |
| public ClassLoader run() { |
| Thread.currentThread().setContextClassLoader(cl); |
| return null; |
| } |
| }); |
| } |
| } |
| |
| } |