Showing changes in java/18/java.base/java/lang/RuntimePermission.java (new version) from java/17/java.base/java/lang/RuntimePermission.java (old version). +11 -1
 /*
- * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code 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
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
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 package java.lang;
 
 import java.security.*;
 import java.lang.module.ModuleFinder;
 
 /**
  * This class is for runtime permissions. A {@code RuntimePermission}
  * contains a name (also referred to as a "target name") but no actions
  * list; you either have the named permission or you don't.
  * <p>
  * The target name is the name of the runtime permission (see below). The
  * naming convention follows the  hierarchical property naming convention.
  * Also, an asterisk may appear at the end of the name, following a ".",
  * or by itself, to signify a wildcard match. For example: "loadLibrary.*"
  * and "*" signify a wildcard match, while "*loadLibrary" and "a*b" do not.
  * <p>
  * The following table lists the standard {@code RuntimePermission}
  * target names, and for each provides a description of what the permission
  * allows and a discussion of the risks of granting code the permission.
  *
  * <table class="striped">
  * <caption style="display:none">permission target name,
  *  what the target allows, and associated risks</caption>
  * <thead>
  * <tr>
  * <th scope="col">Permission Target Name</th>
  * <th scope="col">What the Permission Allows</th>
  * <th scope="col">Risks of Allowing this Permission</th>
  * </tr>
  * </thead>
  * <tbody>
  *
  * <tr>
  *   <th scope="row">createClassLoader</th>
  *   <td>Creation of a class loader</td>
  *   <td>This is an extremely dangerous permission to grant.
  * Malicious applications that can instantiate their own class
  * loaders could then load their own rogue classes into the system.
  * These newly loaded classes could be placed into any protection
  * domain by the class loader, thereby automatically granting the
  * classes the permissions for that domain.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">getClassLoader</th>
  *   <td>Retrieval of a class loader (e.g., the class loader for the calling
  * class)</td>
  *   <td>This would grant an attacker permission to get the
  * class loader for a particular class. This is dangerous because
  * having access to a class's class loader allows the attacker to
  * load other classes available to that class loader. The attacker
  * would typically otherwise not have access to those classes.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">setContextClassLoader</th>
  *   <td>Setting of the context class loader used by a thread</td>
  *   <td>The context class loader is used by system code and extensions
  * when they need to lookup resources that might not exist in the system
  * class loader. Granting setContextClassLoader permission would allow
  * code to change which context class loader is used
  * for a particular thread, including system threads.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">enableContextClassLoaderOverride</th>
  *   <td>Subclass implementation of the thread context class loader methods</td>
  *   <td>The context class loader is used by system code and extensions
  * when they need to lookup resources that might not exist in the system
  * class loader. Granting enableContextClassLoaderOverride permission would allow
  * a subclass of Thread to override the methods that are used
  * to get or set the context class loader for a particular thread.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">closeClassLoader</th>
  *   <td>Closing of a ClassLoader</td>
  *   <td>Granting this permission allows code to close any URLClassLoader
  * that it has a reference to.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">setSecurityManager</th>
  *   <td>Setting of the security manager (possibly replacing an existing one)
  * </td>
  *   <td>The security manager is a class that allows
  * applications to implement a security policy. Granting the setSecurityManager
  * permission would allow code to change which security manager is used by
  * installing a different, possibly less restrictive security manager,
  * thereby bypassing checks that would have been enforced by the original
  * security manager.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">createSecurityManager</th>
  *   <td>Creation of a new security manager</td>
  *   <td>This gives code access to protected, sensitive methods that may
  * disclose information about other classes or the execution stack.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">getenv.{variable name}</th>
  *   <td>Reading of the value of the specified environment variable</td>
  *   <td>This would allow code to read the value, or determine the
  *       existence, of a particular environment variable.  This is
  *       dangerous if the variable contains confidential data.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">exitVM.{exit status}</th>
  *   <td>Halting of the Java Virtual Machine with the specified exit status</td>
  *   <td>This allows an attacker to mount a denial-of-service attack
  * by automatically forcing the virtual machine to halt.
  * Note: The "exitVM.*" permission is automatically granted to all code
  * loaded from the application class path, thus enabling applications
  * to terminate themselves. Also, the "exitVM" permission is equivalent to
  * "exitVM.*".</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">shutdownHooks</th>
  *   <td>Registration and cancellation of virtual-machine shutdown hooks</td>
  *   <td>This allows an attacker to register a malicious shutdown
  * hook that interferes with the clean shutdown of the virtual machine.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">setFactory</th>
  *   <td>Setting of the socket factory used by ServerSocket or Socket,
  * or of the stream handler factory used by URL</td>
  *   <td>This allows code to set the actual implementation
  * for the socket, server socket, stream handler, or RMI socket factory.
  * An attacker may set a faulty implementation which mangles the data
  * stream.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">setIO</th>
  *   <td>Setting of System.out, System.in, and System.err</td>
  *   <td>This allows changing the value of the standard system streams.
  * An attacker may change System.in to monitor and
  * steal user input, or may set System.err to a "null" OutputStream,
  * which would hide any error messages sent to System.err. </td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">modifyThread</th>
  *   <td>Modification of threads, e.g., via calls to Thread
  * {@code interrupt, stop, suspend, resume, setDaemon, setPriority,
  * setName} and {@code setUncaughtExceptionHandler}
  * methods</td>
  * <td>This allows an attacker to modify the behaviour of
  * any thread in the system.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">stopThread</th>
  *   <td>Stopping of threads via calls to the Thread {@code stop}
  * method</td>
  *   <td>This allows code to stop any thread in the system provided that it is
  * already granted permission to access that thread.
  * This poses as a threat, because that code may corrupt the system by
  * killing existing threads.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">modifyThreadGroup</th>
  *   <td>modification of thread groups, e.g., via calls to ThreadGroup
  * {@code destroy}, {@code getParent}, {@code resume},
  * {@code setDaemon}, {@code setMaxPriority}, {@code stop},
  * and {@code suspend} methods</td>
  *   <td>This allows an attacker to create thread groups and
  * set their run priority.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">getProtectionDomain</th>
  *   <td>Retrieval of the ProtectionDomain for a class</td>
  *   <td>This allows code to obtain policy information
  * for a particular code source. While obtaining policy information
  * does not compromise the security of the system, it does give
  * attackers additional information, such as local file names for
  * example, to better aim an attack.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">getFileSystemAttributes</th>
  *   <td>Retrieval of file system attributes</td>
  *   <td>This allows code to obtain file system information such as disk usage
  *       or disk space available to the caller.  This is potentially dangerous
  *       because it discloses information about the system hardware
  *       configuration and some information about the caller's privilege to
  *       write files.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">readFileDescriptor</th>
  *   <td>Reading of file descriptors</td>
  *   <td>This would allow code to read the particular file associated
  *       with the file descriptor read. This is dangerous if the file
  *       contains confidential data.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">writeFileDescriptor</th>
  *   <td>Writing to file descriptors</td>
  *   <td>This allows code to write to a particular file associated
  *       with the descriptor. This is dangerous because it may allow
  *       malicious code to plant viruses or at the very least, fill up
  *       your entire disk.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">loadLibrary.{library name}</th>
  *   <td>Dynamic linking of the specified library</td>
  *   <td>It is dangerous to allow an applet permission to load native code
  * libraries, because the Java security architecture is not designed to and
  * does not prevent malicious behavior at the level of native code.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">accessClassInPackage.{package name}</th>
  *   <td>Access to the specified package via a class loader's
  * {@code loadClass} method when that class loader calls
  * the SecurityManager {@code checkPackageAccess} method</td>
  *   <td>This gives code access to classes in packages
  * to which it normally does not have access. Malicious code
  * may use these classes to help in its attempt to compromise
  * security in the system.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">defineClassInPackage.{package name}</th>
  *   <td>Definition of classes in the specified package, via a class
  * loader's {@code defineClass} method when that class loader calls
  * the SecurityManager {@code checkPackageDefinition} method.</td>
  *   <td>This grants code permission to define a class
  * in a particular package. This is dangerous because malicious
  * code with this permission may define rogue classes in
  * trusted packages like {@code java.security} or {@code java.lang},
  * for example.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">defineClass</th>
  *   <td>Define a class with
  * {@link java.lang.invoke.MethodHandles.Lookup#defineClass(byte[])
  * Lookup.defineClass}.</td>
  *   <td>This grants code with a suitably privileged {@code Lookup} object
  * permission to define classes in the same package as the {@code Lookup}'s
  * lookup class. </td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">accessDeclaredMembers</th>
  *   <td>Access to the declared members of a class</td>
  *   <td>This grants code permission to query a class for its public,
  * protected, default (package) access, and private fields and/or
  * methods. Although the code would have
  * access to the private and protected field and method names, it would not
  * have access to the private/protected field data and would not be able
  * to invoke any private methods. Nevertheless, malicious code
  * may use this information to better aim an attack.
  * Additionally, it may invoke any public methods and/or access public fields
  * in the class.  This could be dangerous if
  * the code would normally not be able to invoke those methods and/or
  * access the fields  because
  * it can't cast the object to the class/interface with those methods
  * and fields.</td>
  * </tr>
  * <tr>
  *   <th scope="row">queuePrintJob</th>
  *   <td>Initiation of a print job request</td>
  *   <td>This could print sensitive information to a printer,
  * or simply waste paper.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">getStackTrace</th>
  *   <td>Retrieval of the stack trace information of another thread.</td>
  *   <td>This allows retrieval of the stack trace information of
  * another thread.  This might allow malicious code to monitor the
  * execution of threads and discover vulnerabilities in applications.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">getStackWalkerWithClassReference</th>
  *   <td>Get a stack walker that can retrieve stack frames with class reference.</td>
  *   <td>This allows retrieval of Class objects from stack walking.
  *   This might allow malicious code to access Class objects on the stack
  *   outside its own context.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">setDefaultUncaughtExceptionHandler</th>
  *   <td>Setting the default handler to be used when a thread
  *   terminates abruptly due to an uncaught exception</td>
  *   <td>This allows an attacker to register a malicious
  *   uncaught exception handler that could interfere with termination
  *   of a thread</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">preferences</th>
  *   <td>Represents the permission required to get access to the
  *   java.util.prefs.Preferences implementations user or system root
  *   which in turn allows retrieval or update operations within the
  *   Preferences persistent backing store.) </td>
  *   <td>This permission allows the user to read from or write to the
  *   preferences backing store if the user running the code has
  *   sufficient OS privileges to read/write to that backing store.
  *   The actual backing store may reside within a traditional filesystem
  *   directory or within a registry depending on the platform OS</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">manageProcess</th>
  *   <td>Native process termination and information about processes
  *       {@link ProcessHandle}.</td>
  *   <td>Allows code to identify and terminate processes that it did not create.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">localeServiceProvider</th>
  *   <td>This {@code RuntimePermission} is required to be granted to
  *   classes which subclass and implement
  *   {@code java.util.spi.LocaleServiceProvider}. The permission is
  *   checked during invocation of the abstract base class constructor.
  *   This permission ensures trust in classes which implement this
  *   security-sensitive provider mechanism. </td>
  *   <td>See <a href= "../util/spi/LocaleServiceProvider.html">
  *   {@code java.util.spi.LocaleServiceProvider}</a> for more
  *   information.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">loggerFinder</th>
  *   <td>This {@code RuntimePermission} is required to be granted to
  *   classes which subclass or call methods on
  *   {@code java.lang.System.LoggerFinder}. The permission is
  *   checked during invocation of the abstract base class constructor, as
  *   well as on the invocation of its public methods.
  *   This permission ensures trust in classes which provide loggers
  *   to system classes.</td>
  *   <td>See {@link java.lang.System.LoggerFinder java.lang.System.LoggerFinder}
  *   for more information.</td>
  * </tr>
  *
  * <tr>
  *   <th scope="row">accessSystemModules</th>
  *   <td>Access system modules in the runtime image.</td>
  *   <td>This grants the permission to access resources in the
  *   {@linkplain ModuleFinder#ofSystem system modules} in the runtime image.</td>
  * </tr>
  *
+ * <tr>
+ *   <th scope="row">inetAddressResolverProvider</th>
+ *   <td>This {@code RuntimePermission} is required to be granted to
+ *   classes which subclass and implement {@code java.net.spi.InetAddressResolverProvider}.
+ *   The permission is checked during invocation of the abstract base class constructor.
+ *   This permission ensures trust in classes which provide resolvers used by
+ *   {@link java.net.InetAddress} hostname and address resolution methods.</td>
+ *   <td>See {@link java.net.spi.InetAddressResolverProvider} for more information.</td>
+ * </tr>
+ *
  * </tbody>
  * </table>
  *
  * @implNote
  * Implementations may define additional target names, but should use naming
  * conventions such as reverse domain name notation to avoid name clashes.
  *
  * @see java.security.BasicPermission
  * @see java.security.Permission
  * @see java.security.Permissions
  * @see java.security.PermissionCollection
  * @see java.lang.SecurityManager
  *
  *
  * @author Marianne Mueller
  * @author Roland Schemers
  * @since 1.2
  */
 
 public final class RuntimePermission extends BasicPermission {
 
     @java.io.Serial
     private static final long serialVersionUID = 7399184964622342223L;
 
     /**
      * Creates a new RuntimePermission with the specified name.
      * The name is the symbolic name of the RuntimePermission, such as
      * "exit", "setFactory", etc. An asterisk
      * may appear at the end of the name, following a ".", or by itself, to
      * signify a wildcard match.
      *
      * @param name the name of the RuntimePermission.
      *
      * @throws NullPointerException if {@code name} is {@code null}.
      * @throws IllegalArgumentException if {@code name} is empty.
      */
 
     public RuntimePermission(String name)
     {
         super(name);
     }
 
     /**
      * Creates a new RuntimePermission object with the specified name.
      * The name is the symbolic name of the RuntimePermission, and the
      * actions String is currently unused and should be null.
      *
      * @param name the name of the RuntimePermission.
      * @param actions should be null.
      *
      * @throws NullPointerException if {@code name} is {@code null}.
      * @throws IllegalArgumentException if {@code name} is empty.
      */
 
     public RuntimePermission(String name, String actions)
     {
         super(name, actions);
     }
 }