1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
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24 */
25
26package java.net;
27
28import java.security.*;
29import java.util.Enumeration;
30import java.util.Hashtable;
31import java.util.StringTokenizer;
32
33/**
34 * This class is for various network permissions.
35 * A NetPermission contains a name (also referred to as a "target name") but
36 * no actions list; you either have the named permission
37 * or you don't.
38 * <P>
39 * The target name is the name of the network permission (see below). The naming
40 * convention follows the  hierarchical property naming convention.
41 * Also, an asterisk
42 * may appear at the end of the name, following a ".", or by itself, to
43 * signify a wildcard match. For example: "foo.*" and "*" signify a wildcard
44 * match, while "*foo" and "a*b" do not.
45 * <P>
46 * The following table lists all the possible NetPermission target names,
47 * and for each provides a description of what the permission allows
48 * and a discussion of the risks of granting code the permission.
49 *
50 * <table class="striped">
51 * <caption style="display:none">Permission target name, what the permission allows, and associated risks</caption>
52 * <thead>
53 * <tr>
54 * <th>Permission Target Name</th>
55 * <th>What the Permission Allows</th>
56 * <th>Risks of Allowing this Permission</th>
57 * </tr>
58 * </thead>
59 * <tbody>
60 * <tr>
61 *   <td>allowHttpTrace</td>
62 *   <td>The ability to use the HTTP TRACE method in HttpURLConnection.</td>
63 *   <td>Malicious code using HTTP TRACE could get access to security sensitive
64 *   information in the HTTP headers (such as cookies) that it might not
65 *   otherwise have access to.</td>
66 *   </tr>
67 *
68 * <tr>
69 *   <td>getCookieHandler</td>
70 *   <td>The ability to get the cookie handler that processes highly
71 *   security sensitive cookie information for an Http session.</td>
72 *   <td>Malicious code can get a cookie handler to obtain access to
73 *   highly security sensitive cookie information. Some web servers
74 *   use cookies to save user private information such as access
75 *   control information, or to track user browsing habit.</td>
76 *   </tr>
77 *
78 * <tr>
79 *   <td>getNetworkInformation</td>
80 *   <td>The ability to retrieve all information about local network interfaces.</td>
81 *   <td>Malicious code can read information about network hardware such as
82 *   MAC addresses, which could be used to construct local IPv6 addresses.</td>
83 * </tr>
84 *
85 * <tr>
86 *   <td>getProxySelector</td>
87 *   <td>The ability to get the proxy selector used to make decisions
88 *   on which proxies to use when making network connections.</td>
89 *   <td>Malicious code can get a ProxySelector to discover proxy
90 *   hosts and ports on internal networks, which could then become
91 *   targets for attack.</td>
92 * </tr>
93 *
94 * <tr>
95 *   <td>getResponseCache</td>
96 *   <td>The ability to get the response cache that provides
97 *   access to a local response cache.</td>
98 *   <td>Malicious code getting access to the local response cache
99 *   could access security sensitive information.</td>
100 *   </tr>
101 *
102 * <tr>
103 *   <td>requestPasswordAuthentication</td>
104 *   <td>The ability
105 *   to ask the authenticator registered with the system for
106 *   a password</td>
107 *   <td>Malicious code may steal this password.</td>
108 * </tr>
109 *
110 * <tr>
111 *   <td>setCookieHandler</td>
112 *   <td>The ability to set the cookie handler that processes highly
113 *   security sensitive cookie information for an Http session.</td>
114 *   <td>Malicious code can set a cookie handler to obtain access to
115 *   highly security sensitive cookie information. Some web servers
116 *   use cookies to save user private information such as access
117 *   control information, or to track user browsing habit.</td>
118 *   </tr>
119 *
120 * <tr>
121 *   <td>setDefaultAuthenticator</td>
122 *   <td>The ability to set the
123 *   way authentication information is retrieved when
124 *   a proxy or HTTP server asks for authentication</td>
125 *   <td>Malicious
126 *   code can set an authenticator that monitors and steals user
127 *   authentication input as it retrieves the input from the user.</td>
128 * </tr>
129 *
130 * <tr>
131 *   <td>setProxySelector</td>
132 *   <td>The ability to set the proxy selector used to make decisions
133 *   on which proxies to use when making network connections.</td>
134 *   <td>Malicious code can set a ProxySelector that directs network
135 *   traffic to an arbitrary network host.</td>
136 * </tr>
137 *
138 * <tr>
139 *   <td>setResponseCache</td>
140 *   <td>The ability to set the response cache that provides access to
141 *   a local response cache.</td>
142 *   <td>Malicious code getting access to the local response cache
143 *   could access security sensitive information, or create false
144 *   entries in the response cache.</td>
145 *   </tr>
146 *
147 * <tr>
148 *   <td>specifyStreamHandler</td>
149 *   <td>The ability
150 *   to specify a stream handler when constructing a URL</td>
151 *   <td>Malicious code may create a URL with resources that it would
152 *   normally not have access to (like file:/foo/fum/), specifying a
153 *   stream handler that gets the actual bytes from someplace it does
154 *   have access to. Thus it might be able to trick the system into
155 *   creating a ProtectionDomain/CodeSource for a class even though
156 *   that class really didn't come from that location.</td>
157 * </tr>
158   </tbody>
159 * </table>
160 *
161 * @see java.security.BasicPermission
162 * @see java.security.Permission
163 * @see java.security.Permissions
164 * @see java.security.PermissionCollection
165 * @see java.lang.SecurityManager
166 *
167 *
168 * @author Marianne Mueller
169 * @author Roland Schemers
170 * @since 1.2
171 */
172
173public final class NetPermission extends BasicPermission {
174    private static final long serialVersionUID = -8343910153355041693L;
175
176    /**
177     * Creates a new NetPermission with the specified name.
178     * The name is the symbolic name of the NetPermission, such as
179     * "setDefaultAuthenticator", etc. An asterisk
180     * may appear at the end of the name, following a ".", or by itself, to
181     * signify a wildcard match.
182     *
183     * @param name the name of the NetPermission.
184     *
185     * @throws NullPointerException if {@code name} is {@code null}.
186     * @throws IllegalArgumentException if {@code name} is empty.
187     */
188
189    public NetPermission(String name)
190    {
191        super(name);
192    }
193
194    /**
195     * Creates a new NetPermission object with the specified name.
196     * The name is the symbolic name of the NetPermission, and the
197     * actions String is currently unused and should be null.
198     *
199     * @param name the name of the NetPermission.
200     * @param actions should be null.
201     *
202     * @throws NullPointerException if {@code name} is {@code null}.
203     * @throws IllegalArgumentException if {@code name} is empty.
204     */
205
206    public NetPermission(String name, String actions)
207    {
208        super(name, actions);
209    }
210}
211