Showing the changes to java/pkg/com/sun/script/javascript/RhinoClassShutter.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,75 @@ | |||
| 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 com.sun.script.javascript; | ||
| 27 | |||
| 28 | import java.util.*; | ||
| 29 | import sun.org.mozilla.javascript.internal.*; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * This class prevents script access to certain sensitive classes. | ||
| 33 | * Note that this class checks over and above SecurityManager. i.e., although | ||
| 34 | * a SecurityManager would pass, class shutter may still prevent access. | ||
| 35 | * | ||
| 36 | * @author A. Sundararajan | ||
| 37 | * @since 1.6 | ||
| 38 | */ | ||
| 39 | final class RhinoClassShutter implements ClassShutter { | ||
| 40 | private static Map<String, Boolean> protectedClasses; | ||
| 41 | private static RhinoClassShutter theInstance; | ||
| 42 | |||
| 43 | private RhinoClassShutter() { | ||
| 44 | } | ||
| 45 | |||
| 46 | static synchronized ClassShutter getInstance() { | ||
| 47 | if (theInstance == null) { | ||
| 48 | theInstance = new RhinoClassShutter(); | ||
| 49 | protectedClasses = new HashMap<String, Boolean>(); | ||
| 50 | |||
| 51 | // For now, we just have AccessController. Allowing scripts | ||
| 52 | // to this class will allow it to execute doPrivileged in | ||
| 53 | // bootstrap context. We can add more classes for other reasons. | ||
| 54 | protectedClasses.put("java.security.AccessController", Boolean.TRUE); | ||
| 55 | } | ||
| 56 | return theInstance; | ||
| 57 | } | ||
| 58 | |||
| 59 | public boolean visibleToScripts(String fullClassName) { | ||
| 60 | // first do the security check. | ||
| 61 | SecurityManager sm = System.getSecurityManager(); | ||
| 62 | if (sm != null) { | ||
| 63 | int i = fullClassName.lastIndexOf("."); | ||
| 64 | if (i != -1) { | ||
| 65 | try { | ||
| 66 | sm.checkPackageAccess(fullClassName.substring(0, i)); | ||
| 67 | } catch (SecurityException se) { | ||
| 68 | return false; | ||
| 69 | } | ||
| 70 | } | ||
| 71 | } | ||
| 72 | // now, check is it a protected class. | ||
| 73 | return protectedClasses.get(fullClassName) == null; | ||
| 74 | } | ||
| 75 | } | ||