| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| */ |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.sun.org.apache.xerces.internal.xinclude; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| |
| /** |
| * This class is duplicated for each subpackage so keep it in sync. |
| * It is package private and therefore is not exposed as part of any API. |
| * |
| * @xerces.internal |
| */ |
| final class SecuritySupport { |
| |
| private static final SecuritySupport securitySupport = new SecuritySupport(); |
| |
| /** |
| * Return an instance of this class. |
| */ |
| static SecuritySupport getInstance() { |
| return securitySupport; |
| } |
| |
| ClassLoader getContextClassLoader() { |
| return (ClassLoader) |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| ClassLoader cl = null; |
| try { |
| cl = Thread.currentThread().getContextClassLoader(); |
| } catch (SecurityException ex) { } |
| return cl; |
| } |
| }); |
| } |
| |
| ClassLoader getSystemClassLoader() { |
| return (ClassLoader) |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| ClassLoader cl = null; |
| try { |
| cl = ClassLoader.getSystemClassLoader(); |
| } catch (SecurityException ex) {} |
| return cl; |
| } |
| }); |
| } |
| |
| ClassLoader getParentClassLoader(final ClassLoader cl) { |
| return (ClassLoader) |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| ClassLoader parent = null; |
| try { |
| parent = cl.getParent(); |
| } catch (SecurityException ex) {} |
| |
| // eliminate loops in case of the boot |
| // ClassLoader returning itself as a parent |
| return (parent == cl) ? null : parent; |
| } |
| }); |
| } |
| |
| String getSystemProperty(final String propName) { |
| return (String) |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| return System.getProperty(propName); |
| } |
| }); |
| } |
| |
| FileInputStream getFileInputStream(final File file) |
| throws FileNotFoundException |
| { |
| try { |
| return (FileInputStream) |
| AccessController.doPrivileged(new PrivilegedExceptionAction() { |
| public Object run() throws FileNotFoundException { |
| return new FileInputStream(file); |
| } |
| }); |
| } catch (PrivilegedActionException e) { |
| throw (FileNotFoundException)e.getException(); |
| } |
| } |
| |
| boolean getFileExists(final File f) { |
| return ((Boolean) |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| return f.exists(); |
| } |
| })).booleanValue(); |
| } |
| |
| long getLastModified(final File f) { |
| return ((Long) |
| AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| return f.lastModified(); |
| } |
| })).longValue(); |
| } |
| |
| private SecuritySupport () {} |
| } |