1 /*
2 * Copyright 1997-2004 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any 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 *
58 * <tr>
59 * <td>setDefaultAuthenticator</td>
60 * <td>The ability to set the
61 * way authentication information is retrieved when
62 * a proxy or HTTP server asks for authentication</td>
63 * <td>Malicious
64 * code can set an authenticator that monitors and steals user
65 * authentication input as it retrieves the input from the user.</td>
66 * </tr>
67 *
68 * <tr>
69 * <td>requestPasswordAuthentication</td>
70 * <td>The ability
71 * to ask the authenticator registered with the system for
72 * a password</td>
73 * <td>Malicious code may steal this password.</td>
74 * </tr>
75 *
76 * <tr>
77 * <td>specifyStreamHandler</td>
78 * <td>The ability
79 * to specify a stream handler when constructing a URL</td>
80 * <td>Malicious code may create a URL with resources that it would
81 normally not have access to (like file:/foo/fum/), specifying a
82 stream handler that gets the actual bytes from someplace it does
83 have access to. Thus it might be able to trick the system into
84 creating a ProtectionDomain/CodeSource for a class even though
85 that class really didn't come from that location.</td>
86 * </tr>
87 *
88 * <tr>
89 * <td>setProxySelector</td>
90 * <td>The ability to set the proxy selector used to make decisions
91 * on which proxies to use when making network connections.</td>
92 * <td>Malicious code can set a ProxySelector that directs network
93 * traffic to an arbitrary network host.</td>
94 * </tr>
95 *
96 * <tr>
97 * <td>getProxySelector</td>
98 * <td>The ability to get the proxy selector used to make decisions
99 * on which proxies to use when making network connections.</td>
100 * <td>Malicious code can get a ProxySelector to discover proxy
101 * hosts and ports on internal networks, which could then become
102 * targets for attack.</td>
103 * </tr>
104 *
105 * <tr>
106 * <td>setCookieHandler</td>
107 * <td>The ability to set the cookie handler that processes highly
108 * security sensitive cookie information for an Http session.</td>
109 * <td>Malicious code can set a cookie handler to obtain access to
110 * highly security sensitive cookie information. Some web servers
111 * use cookies to save user private information such as access
112 * control information, or to track user browsing habit.</td>
113 * </tr>
114 *
115 * <tr>
116 * <td>getCookieHandler</td>
117 * <td>The ability to get the cookie handler that processes highly
118 * security sensitive cookie information for an Http session.</td>
119 * <td>Malicious code can get a cookie handler to obtain access to
120 * highly security sensitive cookie information. Some web servers
121 * use cookies to save user private information such as access
122 * control information, or to track user browsing habit.</td>
123 * </tr>
124 *
125 * <tr>
126 * <td>setResponseCache</td>
127 * <td>The ability to set the response cache that provides access to
128 * a local response cache.</td>
129 * <td>Malicious code getting access to the local response cache
130 * could access security sensitive information, or create false
131 * entries in the response cache.</td>
132 * </tr>
133 *
134 * <tr>
135 * <td>getResponseCache</td>
136 * <td>The ability to get the response cache that provides
137 * access to a local response cache.</td>
138 * <td>Malicious code getting access to the local response cache
139 * could access security sensitive information.</td>
140 * </tr>
141 *
142 * </table>
143 *
144 * @see java.security.BasicPermission
145 * @see java.security.Permission
146 * @see java.security.Permissions
147 * @see java.security.PermissionCollection
148 * @see java.lang.SecurityManager
149 *
150 *
151 * @author Marianne Mueller
152 * @author Roland Schemers
153 */
154
155 public final class NetPermission extends BasicPermission {
156 private static final long serialVersionUID = -8343910153355041693L;
157
158 /**
159 * Creates a new NetPermission with the specified name.
160 * The name is the symbolic name of the NetPermission, such as
161 * "setDefaultAuthenticator", etc. An asterisk
162 * may appear at the end of the name, following a ".", or by itself, to
163 * signify a wildcard match.
164 *
165 * @param name the name of the NetPermission.
166 *
167 * @throws NullPointerException if <code>name</code> is <code>null</code>.
168 * @throws IllegalArgumentException if <code>name</code> is empty.
169 */
170
171 public NetPermission(String name)
172 {
173 super(name);
174 }
175
176 /**
177 * Creates a new NetPermission object with the specified name.
178 * The name is the symbolic name of the NetPermission, and the
179 * actions String is currently unused and should be null.
180 *
181 * @param name the name of the NetPermission.
182 * @param actions should be null.
183 *
184 * @throws NullPointerException if <code>name</code> is <code>null</code>.
185 * @throws IllegalArgumentException if <code>name</code> is empty.
186 */
187
188 public NetPermission(String name, String actions)
189 {
190 super(name, actions);
191 }
192 }
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