1 /*
2 * Copyright (c) 1997, 2004, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
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).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.net;
27
28 import java.security.*;
29 import java.util.Enumeration;
30 import java.util.Hashtable;
31 import 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.*" or "*" is valid,
44 * "*foo" or "a*b" is not valid.
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 * <P>
50 *
51 * <table border=1 cellpadding=5 summary="Permission target name, what the permission allows, and associated risks">
52 * <tr>
53 * <th>Permission Target Name</th>
54 * <th>What the Permission Allows</th>
55 * <th>Risks of Allowing this Permission</th>
56 * </tr>
57 * <tr>
58 * <td>allowHttpTrace</td>
59 * <td>The ability to use the HTTP TRACE method in HttpURLConnection.</td>
60 * <td>Malicious code using HTTP TRACE could get access to security sensitive
61 * information in the HTTP headers (such as cookies) that it might not
62 * otherwise have access to.</td>
63 * </tr>
64 *
65 * <tr>
66 * <td>getCookieHandler</td>
67 * <td>The ability to get the cookie handler that processes highly
68 * security sensitive cookie information for an Http session.</td>
69 * <td>Malicious code can get a cookie handler to obtain access to
70 * highly security sensitive cookie information. Some web servers
71 * use cookies to save user private information such as access
72 * control information, or to track user browsing habit.</td>
73 * </tr>
74 *
75 * <tr>
76 * <td>getProxySelector</td>
77 * <td>The ability to get the proxy selector used to make decisions
78 * on which proxies to use when making network connections.</td>
79 * <td>Malicious code can get a ProxySelector to discover proxy
80 * hosts and ports on internal networks, which could then become
81 * targets for attack.</td>
82 * </tr>
83 *
84 * <tr>
85 * <td>getResponseCache</td>
86 * <td>The ability to get the response cache that provides
87 * access to a local response cache.</td>
88 * <td>Malicious code getting access to the local response cache
89 * could access security sensitive information.</td>
90 * </tr>
91 *
92 * <tr>
93 * <td>requestPasswordAuthentication</td>
94 * <td>The ability
95 * to ask the authenticator registered with the system for
96 * a password</td>
97 * <td>Malicious code may steal this password.</td>
98 * </tr>
99 *
100 * <tr>
101 * <td>setCookieHandler</td>
102 * <td>The ability to set the cookie handler that processes highly
103 * security sensitive cookie information for an Http session.</td>
104 * <td>Malicious code can set a cookie handler to obtain access to
105 * highly security sensitive cookie information. Some web servers
106 * use cookies to save user private information such as access
107 * control information, or to track user browsing habit.</td>
108 * </tr>
109 *
110 * <tr>
111 * <td>setDefaultAuthenticator</td>
112 * <td>The ability to set the
113 * way authentication information is retrieved when
114 * a proxy or HTTP server asks for authentication</td>
115 * <td>Malicious
116 * code can set an authenticator that monitors and steals user
117 * authentication input as it retrieves the input from the user.</td>
118 * </tr>
119 *
120 * <tr>
121 * <td>setProxySelector</td>
122 * <td>The ability to set the proxy selector used to make decisions
123 * on which proxies to use when making network connections.</td>
124 * <td>Malicious code can set a ProxySelector that directs network
125 * traffic to an arbitrary network host.</td>
126 * </tr>
127 *
128 * <tr>
129 * <td>setResponseCache</td>
130 * <td>The ability to set the response cache that provides access to
131 * a local response cache.</td>
132 * <td>Malicious code getting access to the local response cache
133 * could access security sensitive information, or create false
134 * entries in the response cache.</td>
135 * </tr>
136 *
137 * <tr>
138 * <td>specifyStreamHandler</td>
139 * <td>The ability
140 * to specify a stream handler when constructing a URL</td>
141 * <td>Malicious code may create a URL with resources that it would
142 normally not have access to (like file:/foo/fum/), specifying a
143 stream handler that gets the actual bytes from someplace it does
144 have access to. Thus it might be able to trick the system into
145 creating a ProtectionDomain/CodeSource for a class even though
146 that class really didn't come from that location.</td>
147 * </tr>
148 * </table>
149 *
150 * @see java.security.BasicPermission
151 * @see java.security.Permission
152 * @see java.security.Permissions
153 * @see java.security.PermissionCollection
154 * @see java.lang.SecurityManager
155 *
156 *
157 * @author Marianne Mueller
158 * @author Roland Schemers
159 */
160
161 public final class NetPermission extends BasicPermission {
162 private static final long serialVersionUID = -8343910153355041693L;
163
164 /**
165 * Creates a new NetPermission with the specified name.
166 * The name is the symbolic name of the NetPermission, such as
167 * "setDefaultAuthenticator", etc. An asterisk
168 * may appear at the end of the name, following a ".", or by itself, to
169 * signify a wildcard match.
170 *
171 * @param name the name of the NetPermission.
172 *
173 * @throws NullPointerException if <code>name</code> is <code>null</code>.
174 * @throws IllegalArgumentException if <code>name</code> is empty.
175 */
176
177 public NetPermission(String name)
178 {
179 super(name);
180 }
181
182 /**
183 * Creates a new NetPermission object with the specified name.
184 * The name is the symbolic name of the NetPermission, and the
185 * actions String is currently unused and should be null.
186 *
187 * @param name the name of the NetPermission.
188 * @param actions should be null.
189 *
190 * @throws NullPointerException if <code>name</code> is <code>null</code>.
191 * @throws IllegalArgumentException if <code>name</code> is empty.
192 */
193
194 public NetPermission(String name, String actions)
195 {
196 super(name, actions);
197 }
198 }