1 /*
2 * Copyright (c) 1997, 2017, 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.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 the standard {@code 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 *
47 * <table class="striped">
48 * <caption style="display:none">Permission target name, what the permission allows, and associated risks</caption>
49 * <thead>
50 * <tr>
51 * <th scope="col">Permission Target Name</th>
52 * <th scope="col">What the Permission Allows</th>
53 * <th scope="col">Risks of Allowing this Permission</th>
54 * </tr>
55 * </thead>
56 * <tbody>
57 *
58 * <tr>
59 * <th scope="row">enableSubclassImplementation</th>
60 * <td>Subclass implementation of ObjectOutputStream or ObjectInputStream
61 * to override the default serialization or deserialization, respectively,
62 * of objects</td>
63 * <td>Code can use this to serialize or
64 * deserialize classes in a purposefully malfeasant manner. For example,
65 * during serialization, malicious code can use this to
66 * purposefully store confidential private field data in a way easily accessible
67 * to attackers. Or, during deserialization it could, for example, deserialize
68 * a class with all its private fields zeroed out.</td>
69 * </tr>
70 *
71 * <tr>
72 * <th scope="row">enableSubstitution</th>
73 * <td>Substitution of one object for another during
74 * serialization or deserialization</td>
75 * <td>This is dangerous because malicious code
76 * can replace the actual object with one which has incorrect or
77 * malignant data.</td>
78 * </tr>
79 *
80 * <tr>
81 * <th scope="row">serialFilter</th>
82 * <td>Setting a filter for ObjectInputStreams.</td>
83 * <td>Code could remove a configured filter and remove protections
84 * already established.</td>
85 * </tr>
86 * </tbody>
87 * </table>
88 *
89 * @see java.security.BasicPermission
90 * @see java.security.Permission
91 * @see java.security.Permissions
92 * @see java.security.PermissionCollection
93 * @see java.lang.SecurityManager
94 *
95 *
96 * @author Joe Fialli
97 * @since 1.2
98 */
99
100 /* code was borrowed originally from java.lang.RuntimePermission. */
101
102 public final class SerializablePermission extends BasicPermission {
103
104 @java.io.Serial
105 private static final long serialVersionUID = 8537212141160296410L;
106
107 /**
108 * @serial
109 */
110 private String actions;
111
112 /**
113 * Creates a new SerializablePermission with the specified name.
114 * The name is the symbolic name of the SerializablePermission, such as
115 * "enableSubstitution", etc.
116 *
117 * @param name the name of the SerializablePermission.
118 *
119 * @throws NullPointerException if <code>name</code> is <code>null</code>.
120 * @throws IllegalArgumentException if <code>name</code> is empty.
121 */
122 public SerializablePermission(String name)
123 {
124 super(name);
125 }
126
127 /**
128 * Creates a new SerializablePermission object with the specified name.
129 * The name is the symbolic name of the SerializablePermission, and the
130 * actions String is currently unused and should be null.
131 *
132 * @param name the name of the SerializablePermission.
133 * @param actions currently unused and must be set to null
134 *
135 * @throws NullPointerException if <code>name</code> is <code>null</code>.
136 * @throws IllegalArgumentException if <code>name</code> is empty.
137 */
138
139 public SerializablePermission(String name, String actions)
140 {
141 super(name, actions);
142 }
143 }