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/* * @(#)NetPermission.java 1.51 06/04/21 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.net; import java.security.*; import java.util.Enumeration; import java.util.Hashtable; import java.util.StringTokenizer; /** * This class is for various network permissions. * A NetPermission 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 network 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: "foo.*" or "*" is valid, * "*foo" or "a*b" is not valid. * <P> * The following table lists all the possible NetPermission target names, * and for each provides a description of what the permission allows * and a discussion of the risks of granting code the permission. * <P> * * <table border=1 cellpadding=5 summary="Permission target name, what the permission allows, and associated risks"> * <tr> * <th>Permission Target Name</th> * <th>What the Permission Allows</th> * <th>Risks of Allowing this Permission</th> * </tr> * * <tr> * <td>setDefaultAuthenticator</td> * <td>The ability to set the * way authentication information is retrieved when * a proxy or HTTP server asks for authentication</td> * <td>Malicious * code can set an authenticator that monitors and steals user * authentication input as it retrieves the input from the user.</td> * </tr> * * <tr> * <td>requestPasswordAuthentication</td> * <td>The ability * to ask the authenticator registered with the system for * a password</td> * <td>Malicious code may steal this password.</td> * </tr> * * <tr> * <td>specifyStreamHandler</td> * <td>The ability * to specify a stream handler when constructing a URL</td> * <td>Malicious code may create a URL with resources that it would normally not have access to (like file:/foo/fum/), specifying a stream handler that gets the actual bytes from someplace it does have access to. Thus it might be able to trick the system into creating a ProtectionDomain/CodeSource for a class even though that class really didn't come from that location.</td> * </tr> * * <tr> * <td>setProxySelector</td> * <td>The ability to set the proxy selector used to make decisions * on which proxies to use when making network connections.</td> * <td>Malicious code can set a ProxySelector that directs network * traffic to an arbitrary network host.</td> * </tr> * * <tr> * <td>getProxySelector</td> * <td>The ability to get the proxy selector used to make decisions * on which proxies to use when making network connections.</td> * <td>Malicious code can get a ProxySelector to discover proxy * hosts and ports on internal networks, which could then become * targets for attack.</td> * </tr> * * <tr> * <td>setCookieHandler</td> * <td>The ability to set the cookie handler that processes highly * security sensitive cookie information for an Http session.</td> * <td>Malicious code can set a cookie handler to obtain access to * highly security sensitive cookie information. Some web servers * use cookies to save user private information such as access * control information, or to track user browsing habit.</td> * </tr> * * <tr> * <td>getCookieHandler</td> * <td>The ability to get the cookie handler that processes highly * security sensitive cookie information for an Http session.</td> * <td>Malicious code can get a cookie handler to obtain access to * highly security sensitive cookie information. Some web servers * use cookies to save user private information such as access * control information, or to track user browsing habit.</td> * </tr> * * <tr> * <td>setResponseCache</td> * <td>The ability to set the response cache that provides access to * a local response cache.</td> * <td>Malicious code getting access to the local response cache * could access security sensitive information, or create false * entries in the response cache.</td> * </tr> * * <tr> * <td>getResponseCache</td> * <td>The ability to get the response cache that provides * access to a local response cache.</td> * <td>Malicious code getting access to the local response cache * could access security sensitive information.</td> * </tr> * * </table> * * @see java.security.BasicPermission * @see java.security.Permission * @see java.security.Permissions * @see java.security.PermissionCollection * @see java.lang.SecurityManager * * @version 1.51 06/04/21 * * @author Marianne Mueller * @author Roland Schemers */ public final class NetPermission extends BasicPermission { private static final long serialVersionUID = -8343910153355041693L; /** * Creates a new NetPermission with the specified name. * The name is the symbolic name of the NetPermission, such as * "setDefaultAuthenticator", 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 NetPermission. * * @throws NullPointerException if <code>name</code> is <code>null</code>. * @throws IllegalArgumentException if <code>name</code> is empty. */ public NetPermission(String name) { super(name); } /** * Creates a new NetPermission object with the specified name. * The name is the symbolic name of the NetPermission, and the * actions String is currently unused and should be null. * * @param name the name of the NetPermission. * @param actions should be null. * * @throws NullPointerException if <code>name</code> is <code>null</code>. * @throws IllegalArgumentException if <code>name</code> is empty. */ public NetPermission(String name, String actions) { super(name, actions); } }