1 /*
2 * Copyright 1997-2005 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.io;
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 Serializable permissions. A SerializablePermission
35 * 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 *
39 * <P>
40 * The target name is the name of the Serializable permission (see below).
41 *
42 * <P>
43 * The following table lists all the possible SerializablePermission target names,
44 * and for each provides a description of what the permission allows
45 * and a discussion of the risks of granting code the permission.
46 * <P>
47 *
48 * <table border=1 cellpadding=5 summary="Permission target name, what the permission allows, and associated risks">
49 * <tr>
50 * <th>Permission Target Name</th>
51 * <th>What the Permission Allows</th>
52 * <th>Risks of Allowing this Permission</th>
53 * </tr>
54 *
55 * <tr>
56 * <td>enableSubclassImplementation</td>
57 * <td>Subclass implementation of ObjectOutputStream or ObjectInputStream
58 * to override the default serialization or deserialization, respectively,
59 * of objects</td>
60 * <td>Code can use this to serialize or
61 * deserialize classes in a purposefully malfeasant manner. For example,
62 * during serialization, malicious code can use this to
63 * purposefully store confidential private field data in a way easily accessible
64 * to attackers. Or, during deserialization it could, for example, deserialize
65 * a class with all its private fields zeroed out.</td>
66 * </tr>
67 *
68 * <tr>
69 * <td>enableSubstitution</td>
70 * <td>Substitution of one object for another during
71 * serialization or deserialization</td>
72 * <td>This is dangerous because malicious code
73 * can replace the actual object with one which has incorrect or
74 * malignant data.</td>
75 * </tr>
76 *
77 * </table>
78 *
79 * @see java.security.BasicPermission
80 * @see java.security.Permission
81 * @see java.security.Permissions
82 * @see java.security.PermissionCollection
83 * @see java.lang.SecurityManager
84 *
85 *
86 * @author Joe Fialli
87 * @since 1.2
88 */
89
90 /* code was borrowed originally from java.lang.RuntimePermission. */
91
92 public final class SerializablePermission extends BasicPermission {
93
94 private static final long serialVersionUID = 8537212141160296410L;
95
96 /**
97 * @serial
98 */
99 private String actions;
100
101 /**
102 * Creates a new SerializablePermission with the specified name.
103 * The name is the symbolic name of the SerializablePermission, such as
104 * "enableSubstitution", etc.
105 *
106 * @param name the name of the SerializablePermission.
107 *
108 * @throws NullPointerException if <code>name</code> is <code>null</code>.
109 * @throws IllegalArgumentException if <code>name</code> is empty.
110 */
111 public SerializablePermission(String name)
112 {
113 super(name);
114 }
115
116 /**
117 * Creates a new SerializablePermission object with the specified name.
118 * The name is the symbolic name of the SerializablePermission, and the
119 * actions String is currently unused and should be null.
120 *
121 * @param name the name of the SerializablePermission.
122 * @param actions currently unused and must be set to null
123 *
124 * @throws NullPointerException if <code>name</code> is <code>null</code>.
125 * @throws IllegalArgumentException if <code>name</code> is empty.
126 */
127
128 public SerializablePermission(String name, String actions)
129 {
130 super(name, actions);
131 }
132 }
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