/*

 * Copyright (c) 1997, 2019, 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>

 *

 * <tr>

 *   <th scope="row">setSocketImpl</th>

 *   <td>The ability to create a sub-class of Socket or ServerSocket with a

 *   user specified SocketImpl.</td>

 *   <td>Malicious user-defined SocketImpls can change the behavior of

 *   Socket and ServerSocket in surprising ways, by virtue of their

 *   ability to access the protected fields of SocketImpl.</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);

    }

}