| /* |
| * 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. |
| */ |
| /* |
| * $Id$ |
| */ |
| |
| package org.apache.xml.utils; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.InputStream; |
| |
| import java.util.Properties; |
| |
| /** |
| * This class is duplicated for each Xalan-Java subpackage so keep it in sync. |
| * It is package private and therefore is not exposed as part of the Xalan-Java |
| * API. |
| * |
| * Base class with security related methods that work on JDK 1.1. |
| */ |
| class SecuritySupport { |
| |
| /* |
| * Make this of type Object so that the verifier won't try to |
| * prove its type, thus possibly trying to load the SecuritySupport12 |
| * class. |
| */ |
| private static final Object securitySupport; |
| |
| static { |
| SecuritySupport ss = null; |
| try { |
| Class c = Class.forName("java.security.AccessController"); |
| // if that worked, we're on 1.2. |
| /* |
| // don't reference the class explicitly so it doesn't |
| // get dragged in accidentally. |
| c = Class.forName("javax.mail.SecuritySupport12"); |
| Constructor cons = c.getConstructor(new Class[] { }); |
| ss = (SecuritySupport)cons.newInstance(new Object[] { }); |
| */ |
| /* |
| * Unfortunately, we can't load the class using reflection |
| * because the class is package private. And the class has |
| * to be package private so the APIs aren't exposed to other |
| * code that could use them to circumvent security. Thus, |
| * we accept the risk that the direct reference might fail |
| * on some JDK 1.1 JVMs, even though we would never execute |
| * this code in such a case. Sigh... |
| */ |
| ss = new SecuritySupport12(); |
| } catch (Exception ex) { |
| // ignore it |
| } finally { |
| if (ss == null) |
| ss = new SecuritySupport(); |
| securitySupport = ss; |
| } |
| } |
| |
| /** |
| * Return an appropriate instance of this class, depending on whether |
| * we're on a JDK 1.1 or J2SE 1.2 (or later) system. |
| */ |
| static SecuritySupport getInstance() { |
| return (SecuritySupport)securitySupport; |
| } |
| |
| ClassLoader getContextClassLoader() { |
| return null; |
| } |
| |
| ClassLoader getSystemClassLoader() { |
| return null; |
| } |
| |
| ClassLoader getParentClassLoader(ClassLoader cl) { |
| return null; |
| } |
| |
| String getSystemProperty(String propName) { |
| return System.getProperty(propName); |
| } |
| |
| FileInputStream getFileInputStream(File file) |
| throws FileNotFoundException |
| { |
| return new FileInputStream(file); |
| } |
| |
| InputStream getResourceAsStream(ClassLoader cl, String name) { |
| InputStream ris; |
| if (cl == null) { |
| ris = ClassLoader.getSystemResourceAsStream(name); |
| } else { |
| ris = cl.getResourceAsStream(name); |
| } |
| return ris; |
| } |
| |
| boolean getFileExists(File f) { |
| return f.exists(); |
| } |
| |
| long getLastModified(File f) { |
| return f.lastModified(); |
| } |
| } |