Source Code Cross Referenced for SerializablePermission.java in  » 6.0-JDK-Modules » j2me » java » io » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.io 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * @(#)SerializablePermission.java	1.20 06/10/10
003:         *
004:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.  
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
006:         *   
007:         * This program is free software; you can redistribute it and/or  
008:         * modify it under the terms of the GNU General Public License version  
009:         * 2 only, as published by the Free Software Foundation.   
010:         *   
011:         * This program is distributed in the hope that it will be useful, but  
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of  
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
014:         * General Public License version 2 for more details (a copy is  
015:         * included at /legal/license.txt).   
016:         *   
017:         * You should have received a copy of the GNU General Public License  
018:         * version 2 along with this work; if not, write to the Free Software  
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
020:         * 02110-1301 USA   
021:         *   
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
023:         * Clara, CA 95054 or visit www.sun.com if you need additional  
024:         * information or have any questions. 
025:         *
026:         */
027:
028:        package java.io;
029:
030:        import java.security.*;
031:        import java.util.Enumeration;
032:        import java.util.Hashtable;
033:        import java.util.StringTokenizer;
034:
035:        /**
036:         * This class is for Serializable permissions. A SerializablePermission
037:         * contains a name (also referred to as a "target name") but
038:         * no actions list; you either have the named permission
039:         * or you don't.
040:         *
041:         * <P>
042:         * The target name is the name of the Serializable permission (see below).
043:         *
044:         * <P>
045:         * The following table lists all the possible SerializablePermission target names,
046:         * and for each provides a description of what the permission allows
047:         * and a discussion of the risks of granting code the permission.
048:         * <P>
049:         *
050:         * <table border=1 cellpadding=5 summary="Permission target name, what the permission allows, and associated risks">
051:         * <tr>
052:         * <th>Permission Target Name</th>
053:         * <th>What the Permission Allows</th>
054:         * <th>Risks of Allowing this Permission</th>
055:         * </tr>
056:         *
057:         * <tr>
058:         *   <td>enableSubclassImplementation</td>
059:         *   <td>Subclass implementation of ObjectOutputStream or ObjectInputStream
060:         * to override the default serialization or deserialization, respectively,
061:         * of objects</td>
062:         *   <td>Code can use this to serialize or
063:         * deserialize classes in a purposefully malfeasant manner. For example,
064:         * during serialization, malicious code can use this to
065:         * purposefully store confidential private field data in a way easily accessible
066:         * to attackers. Or, during deserializaiton it could, for example, deserialize
067:         * a class with all its private fields zeroed out.</td>
068:         * </tr>
069:         *
070:         * <tr>
071:         *   <td>enableSubstitution</td>
072:         *   <td>Substitution of one object for another during
073:         * serialization or deserialization</td>
074:         *   <td>This is dangerous because malicious code
075:         * can replace the actual object with one which has incorrect or
076:         * malignant data.</td>
077:         * </tr>
078:         *
079:         * </table>
080:         *
081:         * @see java.security.BasicPermission
082:         * @see java.security.Permission
083:         * @see java.security.Permissions
084:         * @see java.security.PermissionCollection
085:         * @see java.lang.SecurityManager
086:         *
087:         * @version 1.13, 02/02/00
088:         *
089:         * @author Joe Fialli
090:         * @since 1.2
091:         */
092:
093:        /* code was borrowed originally from java.lang.RuntimePermission. */
094:
095:        public final class SerializablePermission extends BasicPermission {
096:
097:            /**
098:             * @serial
099:             */
100:            private String actions;
101:
102:            /**
103:             * Creates a new SerializablePermission with the specified name.
104:             * The name is the symbolic name of the SerializablePermission, such as
105:             * "enableSubstitution", etc.
106:             *
107:             * @param name the name of the SerializablePermission.
108:             */
109:
110:            public SerializablePermission(String name) {
111:                super (name);
112:            }
113:
114:            /**
115:             * Creates a new SerializablePermission object with the specified name.
116:             * The name is the symbolic name of the SerializablePermission, and the
117:             * actions String is currently unused and should be null.
118:             *
119:             * @param name the name of the SerializablePermission.
120:             * @param actions currently unused and must be set to null
121:             */
122:
123:            public SerializablePermission(String name, String actions) {
124:                super(name, actions);
125:            }
126:        }
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