1 /* 2 * Copyright (c) 2005, 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 javax.xml.datatype; 27 28 import java.security.*; 29 import java.io.*; 30 31 /** 32 * This class is duplicated for each JAXP subpackage so keep it in sync. 33 * It is package private and therefore is not exposed as part of the JAXP 34 * API. 35 * 36 * Security related methods that only work on J2SE 1.2 and newer. 37 */ 38 class SecuritySupport { 39 40 41 ClassLoader getContextClassLoader() { 42 return (ClassLoader) 43 AccessController.doPrivileged(new PrivilegedAction() { 44 public Object run() { 45 ClassLoader cl = null; 46 try { 47 cl = Thread.currentThread().getContextClassLoader(); 48 } catch (SecurityException ex) { } 49 return cl; 50 } 51 }); 52 } 53 54 String getSystemProperty(final String propName) { 55 return (String) 56 AccessController.doPrivileged(new PrivilegedAction() { 57 public Object run() { 58 return System.getProperty(propName); 59 } 60 }); 61 } 62 63 FileInputStream getFileInputStream(final File file) 64 throws FileNotFoundException 65 { 66 try { 67 return (FileInputStream) 68 AccessController.doPrivileged(new PrivilegedExceptionAction() { 69 public Object run() throws FileNotFoundException { 70 return new FileInputStream(file); 71 } 72 }); 73 } catch (PrivilegedActionException e) { 74 throw (FileNotFoundException)e.getException(); 75 } 76 } 77 78 boolean doesFileExist(final File f) { 79 return ((Boolean) 80 AccessController.doPrivileged(new PrivilegedAction() { 81 public Object run() { 82 return new Boolean(f.exists()); 83 } 84 })).booleanValue(); 85 } 86 87 }