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/*
* Copyright (c) 1997, 2013, 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,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
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.*" and "*" signify a wildcard
* match, while "*foo" and "a*b" do not.
* <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.
*
* <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>allowHttpTrace</td>
* <td>The ability to use the HTTP TRACE method in HttpURLConnection.</td>
* <td>Malicious code using HTTP TRACE could get access to security sensitive
* information in the HTTP headers (such as cookies) that it might not
* otherwise have access to.</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>getNetworkInformation</td>
* <td>The ability to retrieve all information about local network interfaces.</td>
* <td>Malicious code can read information about network hardware such as
* MAC addresses, which could be used to construct local IPv6 addresses.</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>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>
*
* <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>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>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>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>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>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>
* </table>
*
* @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
*/
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} is {@code null}.
* @throws IllegalArgumentException if {@code name} 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} is {@code null}.
* @throws IllegalArgumentException if {@code name} is empty.
*/
public NetPermission(String name, String actions)
{
super(name, actions);
}
}
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