| /* RuntimePermission.java -- permission for a secure runtime action |
| Copyright (C) 1998, 2000, 2002, 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.lang; |
| |
| import java.security.BasicPermission; |
| import java.security.Permission; |
| |
| /** |
| * A <code>RuntimePermission</code> contains a permission name, but no |
| * actions list. This means you either have the permission or you don't. |
| * |
| * Permission names have the follow the hierarchial property naming |
| * convention. In addition, an asterisk may appear at the end of a |
| * name if following a period or by itself. |
| * |
| * <table border=1> |
| * <tr><th>Valid names</th><th>Invalid names</th></tr> |
| * <tr><td>"accessClassInPackage.*","*"</td> |
| * <td>"**", "*x", "*.a"</td></tr> |
| * </table> |
| * <br> |
| * |
| * The following table provides a list of all the possible RuntimePermission |
| * permission names with a description of what that permission allows.<br> |
| * <table border=1> |
| * <tr><th>Permission Name</th><th>Permission Allows</th><th>Risks</th</tr> |
| * <tr> |
| * <td><code>createClassLoader</code></td> |
| * <td>creation of a class loader</td> |
| * <td>a class loader can load rogue classes which bypass all security |
| * permissions</td></tr> |
| * <tr> |
| * <td><code>getClassLoader</code></td> |
| * <td>retrieval of the class loader for the calling class</td> |
| * <td>rogue code could load classes not otherwise available</td></tr> |
| * <tr> |
| * <td><code>setContextClassLoader</code></td> |
| * <td>allows the setting of the context class loader used by a thread</td> |
| * <td>rogue code could change the context class loader needed by system |
| * threads</td></tr> |
| * <tr> |
| * <td><code>setSecurityManager</code></td> |
| * <td>allows the application to replace the security manager</td> |
| * <td>the new manager may be less restrictive, so that rogue code can |
| * bypass existing security checks</td></tr> |
| * <tr> |
| * <td><code>createSecurityManager</code></td> |
| * <td>allows the application to create a new security manager</td> |
| * <td>rogue code can use the new security manager to discover information |
| * about the execution stack</td></tr> |
| * <tr> |
| * <td><code>exitVM</code></td> |
| * <td>allows the application to halt the virtual machine</td> |
| * <td>rogue code can mount a denial-of-service attack by killing the |
| * virtual machine</td></tr> |
| * <tr> |
| * <td><code>shutdownHooks</code></td> |
| * <td>allows registration and modification of shutdown hooks</td> |
| * <td>rogue code can add a hook that interferes with clean |
| * virtual machine shutdown</td></tr> |
| * <tr> |
| * <td><code>setFactory</code></td> |
| * <td>allows the application to set the socket factory for socket, |
| * server socket, stream handler, or RMI socket factory.</td> |
| * <td>rogue code can create a rogue network object which mangles or |
| * intercepts data</td></tr> |
| * <tr> |
| * <td><code>setIO</code></td> |
| * <td>allows the application to set System.out, System.in, and |
| * System.err</td> |
| * <td>rogue code could sniff user input and intercept or mangle |
| * output</td></tr> |
| * <tr> |
| * <td><code>modifyThread</code></td> |
| * <td>allows the application to modify any thread in the virtual machine |
| * using any of the methods <code>stop</code>, <code>resume</code>, |
| * <code>suspend</code>, <code>setPriority</code>, and |
| * <code>setName</code> of classs <code>Thread</code></td> |
| * <td>rogue code could adversely modify system or user threads</td></tr> |
| * <tr> |
| * <td><code>stopThread</code></td> |
| * <td>allows the application to <code>stop</code> any thread it has |
| * access to in the system</td> |
| * <td>rogue code can stop arbitrary threads</td></tr> |
| * <tr> |
| * <td><code>modifyThreadGroup</code></td> |
| * <td>allows the application to modify thread groups using any of the |
| * methods <code>destroy</code>, <code>resume</code>, |
| * <code>setDaemon</code>, <code>setMaxPriority</code>, |
| * <code>stop</code>, and <code>suspend</code> of the class |
| * <code>ThreadGroup</code></td> |
| * <td>rogue code can mount a denial-of-service attack by changing run |
| * priorities</td></tr> |
| * <tr> |
| * <td><code>getProtectionDomain</code></td> |
| * <td>retrieve a class's ProtectionDomain</td> |
| * <td>rogue code can gain information about the security policy, to |
| * prepare a better attack</td></tr> |
| * <tr> |
| * <td><code>readFileDescriptor</code></td> |
| * <td>read a file descriptor</td> |
| * <td>rogue code can read sensitive information</td></tr> |
| * <tr> |
| * <td><code>writeFileDescriptor</code></td> |
| * <td>write a file descriptor</td> |
| * <td>rogue code can write files, including viruses, and can modify the |
| * virtual machine binary; if not just fill up the disk</td></tr> |
| * <tr> |
| * <td><code>loadLibrary.</code><em>library name</em></td> |
| * <td>dynamic linking of the named library</td> |
| * <td>native code can bypass many security checks of pure Java</td></tr> |
| * <tr> |
| * <td><code>accessClassInPackage.</code><em>package name</em></td> |
| * <td>access to a package via a ClassLoader</td> |
| * <td>rogue code can access classes not normally available</td></tr> |
| * <tr> |
| * <td><code>defineClassInPackage.</code><em>package name</em></td> |
| * <td>define a class inside a given package</td> |
| * <td>rogue code can install rogue classes, including in trusted packages |
| * like java.security or java.lang</td></tr> |
| * <tr> |
| * <td><code>accessDeclaredMembers</code></td> |
| * <td>access declared class members via reflection</td> |
| * <td>rogue code can discover information, invoke methods, or modify fields |
| * that are not otherwise available</td></tr> |
| * <tr> |
| * <td><code>queuePrintJob</code></td> |
| * <td>initiate a print job</td> |
| * <td>rogue code could make a hard copy of sensitive information, or |
| * simply waste paper</td></tr> |
| * </table> |
| * |
| * @author Brian Jones |
| * @author Eric Blake (ebb9@email.byu.edu) |
| * @see BasicPermission |
| * @see Permission |
| * @see SecurityManager |
| * @since 1.2 |
| * @status updated to 1.4 |
| */ |
| public final class RuntimePermission extends BasicPermission |
| { |
| /** |
| * Compatible with JDK 1.2+. |
| */ |
| private static final long serialVersionUID = 7399184964622342223L; |
| |
| /** |
| * Create a new permission with the specified name. |
| * |
| * @param permissionName the name of the granted permission |
| * @throws NullPointerException if name is null |
| * @throws IllegalArgumentException thrown if name is empty or invalid |
| */ |
| public RuntimePermission(String permissionName) |
| { |
| super(permissionName); |
| } |
| |
| /** |
| * Create a new permission with the specified name. The actions argument |
| * is ignored, as runtime permissions have no actions. |
| * |
| * @param permissionName the name of the granted permission |
| * @param actions ignored |
| * @throws NullPointerException if name is null |
| * @throws IllegalArgumentException thrown if name is empty or invalid |
| */ |
| public RuntimePermission(String permissionName, String actions) |
| { |
| super(permissionName); |
| } |
| } |