mirror of git://gcc.gnu.org/git/gcc.git
210 lines
8.5 KiB
Java
210 lines
8.5 KiB
Java
/* 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);
|
|
}
|
|
}
|