1 /*
2 * Copyright (c) 1997, 2010, 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>getNetworkInformation</td>
77 * <td>The ability to retrieve all information about local network interfaces.</td>
78 * <td>Malicious code can read information about network hardware such as
79 * MAC addresses, which could be used to construct local IPv6 addresses.</td>
80 * </tr>
81 *
82 * <tr>
83 * <td>getProxySelector</td>
84 * <td>The ability to get the proxy selector used to make decisions
85 * on which proxies to use when making network connections.</td>
86 * <td>Malicious code can get a ProxySelector to discover proxy
87 * hosts and ports on internal networks, which could then become
88 * targets for attack.</td>
89 * </tr>
90 *
91 * <tr>
92 * <td>getResponseCache</td>
93 * <td>The ability to get the response cache that provides
94 * access to a local response cache.</td>
95 * <td>Malicious code getting access to the local response cache
96 * could access security sensitive information.</td>
97 * </tr>
98 *
99 * <tr>
100 * <td>requestPasswordAuthentication</td>
101 * <td>The ability
102 * to ask the authenticator registered with the system for
103 * a password</td>
104 * <td>Malicious code may steal this password.</td>
105 * </tr>
106 *
107 * <tr>
108 * <td>setCookieHandler</td>
109 * <td>The ability to set the cookie handler that processes highly
110 * security sensitive cookie information for an Http session.</td>
111 * <td>Malicious code can set a cookie handler to obtain access to
112 * highly security sensitive cookie information. Some web servers
113 * use cookies to save user private information such as access
114 * control information, or to track user browsing habit.</td>
115 * </tr>
116 *
117 * <tr>
118 * <td>setDefaultAuthenticator</td>
119 * <td>The ability to set the
120 * way authentication information is retrieved when
121 * a proxy or HTTP server asks for authentication</td>
122 * <td>Malicious
123 * code can set an authenticator that monitors and steals user
124 * authentication input as it retrieves the input from the user.</td>
125 * </tr>
126 *
127 * <tr>
128 * <td>setProxySelector</td>
129 * <td>The ability to set the proxy selector used to make decisions
130 * on which proxies to use when making network connections.</td>
131 * <td>Malicious code can set a ProxySelector that directs network
132 * traffic to an arbitrary network host.</td>
133 * </tr>
134 *
135 * <tr>
136 * <td>setResponseCache</td>
137 * <td>The ability to set the response cache that provides access to
138 * a local response cache.</td>
139 * <td>Malicious code getting access to the local response cache
140 * could access security sensitive information, or create false
141 * entries in the response cache.</td>
142 * </tr>
143 *
144 * <tr>
145 * <td>specifyStreamHandler</td>
146 * <td>The ability
147 * to specify a stream handler when constructing a URL</td>
148 * <td>Malicious code may create a URL with resources that it would
149 normally not have access to (like file:/foo/fum/), specifying a
150 stream handler that gets the actual bytes from someplace it does
151 have access to. Thus it might be able to trick the system into
152 creating a ProtectionDomain/CodeSource for a class even though
153 that class really didn't come from that location.</td>
154 * </tr>
155 * </table>
156 *
157 * @see java.security.BasicPermission
158 * @see java.security.Permission
159 * @see java.security.Permissions
160 * @see java.security.PermissionCollection
161 * @see java.lang.SecurityManager
162 *
163 *
164 * @author Marianne Mueller
165 * @author Roland Schemers
166 */
167
168 public final class NetPermission extends BasicPermission {
169 private static final long serialVersionUID = -8343910153355041693L;
170
171 /**
172 * Creates a new NetPermission with the specified name.
173 * The name is the symbolic name of the NetPermission, such as
174 * "setDefaultAuthenticator", etc. An asterisk
175 * may appear at the end of the name, following a ".", or by itself, to
176 * signify a wildcard match.
177 *
178 * @param name the name of the NetPermission.
179 *
180 * @throws NullPointerException if <code>name</code> is <code>null</code>.
181 * @throws IllegalArgumentException if <code>name</code> is empty.
182 */
183
184 public NetPermission(String name)
185 {
186 super(name);
187 }
188
189 /**
190 * Creates a new NetPermission object with the specified name.
191 * The name is the symbolic name of the NetPermission, and the
192 * actions String is currently unused and should be null.
193 *
194 * @param name the name of the NetPermission.
195 * @param actions should be null.
196 *
197 * @throws NullPointerException if <code>name</code> is <code>null</code>.
198 * @throws IllegalArgumentException if <code>name</code> is empty.
199 */
200
201 public NetPermission(String name, String actions)
202 {
203 super(name, actions);
204 }
205 }