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package java.io;

import java.security.*;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.StringTokenizer;

This class is for Serializable permissions. A SerializablePermission contains a name (also referred to as a "target name") but no actions list; you either have the named permission or you don't.

The target name is the name of the Serializable permission (see below).

The following table lists the standard SerializablePermission target names, and for each provides a description of what the permission allows and a discussion of the risks of granting code the permission.

Permission target name, what the permission allows, and associated risks
Permission Target Name What the Permission Allows Risks of Allowing this Permission
enableSubclassImplementation Subclass implementation of ObjectOutputStream or ObjectInputStream to override the default serialization or deserialization, respectively, of objects Code can use this to serialize or deserialize classes in a purposefully malfeasant manner. For example, during serialization, malicious code can use this to purposefully store confidential private field data in a way easily accessible to attackers. Or, during deserialization it could, for example, deserialize a class with all its private fields zeroed out.
enableSubstitution Substitution of one object for another during serialization or deserialization This is dangerous because malicious code can replace the actual object with one which has incorrect or malignant data.
serialFilter Setting a filter for ObjectInputStreams. Code could remove a configured filter and remove protections already established.
Author:Joe Fialli
See Also:
Since:1.2
/** * This class is for Serializable permissions. A SerializablePermission * contains a name (also referred to as a "target name") but * no actions list; you either have the named permission * or you don't. * * <P> * The target name is the name of the Serializable permission (see below). * * <P> * The following table lists the standard {@code SerializablePermission} target names, * and for each provides a description of what the permission allows * and a discussion of the risks of granting code the permission. * * <table class="striped"> * <caption style="display:none">Permission target name, what the permission allows, and associated risks</caption> * <thead> * <tr> * <th scope="col">Permission Target Name</th> * <th scope="col">What the Permission Allows</th> * <th scope="col">Risks of Allowing this Permission</th> * </tr> * </thead> * <tbody> * * <tr> * <th scope="row">enableSubclassImplementation</th> * <td>Subclass implementation of ObjectOutputStream or ObjectInputStream * to override the default serialization or deserialization, respectively, * of objects</td> * <td>Code can use this to serialize or * deserialize classes in a purposefully malfeasant manner. For example, * during serialization, malicious code can use this to * purposefully store confidential private field data in a way easily accessible * to attackers. Or, during deserialization it could, for example, deserialize * a class with all its private fields zeroed out.</td> * </tr> * * <tr> * <th scope="row">enableSubstitution</th> * <td>Substitution of one object for another during * serialization or deserialization</td> * <td>This is dangerous because malicious code * can replace the actual object with one which has incorrect or * malignant data.</td> * </tr> * * <tr> * <th scope="row">serialFilter</th> * <td>Setting a filter for ObjectInputStreams.</td> * <td>Code could remove a configured filter and remove protections * already established.</td> * </tr> * </tbody> * </table> * * @see java.security.BasicPermission * @see java.security.Permission * @see java.security.Permissions * @see java.security.PermissionCollection * @see java.lang.SecurityManager * * * @author Joe Fialli * @since 1.2 */
/* code was borrowed originally from java.lang.RuntimePermission. */ public final class SerializablePermission extends BasicPermission { @java.io.Serial private static final long serialVersionUID = 8537212141160296410L;
@serial
/** * @serial */
private String actions;
Creates a new SerializablePermission with the specified name. The name is the symbolic name of the SerializablePermission, such as "enableSubstitution", etc.
Params:
  • name – the name of the SerializablePermission.
Throws:
/** * Creates a new SerializablePermission with the specified name. * The name is the symbolic name of the SerializablePermission, such as * "enableSubstitution", etc. * * @param name the name of the SerializablePermission. * * @throws NullPointerException if {@code name} is {@code null}. * @throws IllegalArgumentException if {@code name} is empty. */
public SerializablePermission(String name) { super(name); }
Creates a new SerializablePermission object with the specified name. The name is the symbolic name of the SerializablePermission, and the actions String is currently unused and should be null.
Params:
  • name – the name of the SerializablePermission.
  • actions – currently unused and must be set to null
Throws:
/** * Creates a new SerializablePermission object with the specified name. * The name is the symbolic name of the SerializablePermission, and the * actions String is currently unused and should be null. * * @param name the name of the SerializablePermission. * @param actions currently unused and must be set to null * * @throws NullPointerException if {@code name} is {@code null}. * @throws IllegalArgumentException if {@code name} is empty. */
public SerializablePermission(String name, String actions) { super(name, actions); } }