程序包 javax.security.auth

类 PrivateCredentialPermission

java.lang.Object

java.security.Permission

javax.security.auth.PrivateCredentialPermission

所有已实现的接口:

Serializable, Guard

public final class PrivateCredentialPermission
extends Permission

This class is used to protect access to private Credentials belonging to a particular Subject. The Subject is represented by a Set of Principals.

The target name of this Permission specifies a Credential class name, and a Set of Principals. The only valid value for this Permission's actions is, "read". The target name must abide by the following syntax:

      CredentialClass {PrincipalClass "PrincipalName"}*
 

For example, the following permission grants access to the com.sun.PrivateCredential owned by Subjects which have a com.sun.Principal with the name, "duke". Note that although this example, as well as all the examples below, do not contain Codebase, SignedBy, or Principal information in the grant statement (for simplicity reasons), actual policy configurations should specify that information when appropriate.

    grant {
      permission javax.security.auth.PrivateCredentialPermission
              "com.sun.PrivateCredential com.sun.Principal \"duke\"",
              "read";
    };
 

If CredentialClass is "*", then access is granted to all private Credentials belonging to the specified Subject. If "PrincipalName" is "*", then access is granted to the specified Credential owned by any Subject that has the specified Principal (the actual PrincipalName doesn't matter). For example, the following grants access to the a.b.Credential owned by any Subject that has an a.b.Principal.

    grant {
      permission javax.security.auth.PrivateCredentialPermission
              "a.b.Credential a.b.Principal "*"",
              "read";
    };
 

If both the PrincipalClass and "PrincipalName" are "*", then access is granted to the specified Credential owned by any Subject.

In addition, the PrincipalClass/PrincipalName pairing may be repeated:

    grant {
      permission javax.security.auth.PrivateCredentialPermission
              "a.b.Credential a.b.Principal "duke" c.d.Principal "dukette"",
              "read";
    };
 

The above grants access to the private Credential, "a.b.Credential", belonging to a Subject with at least two associated Principals: "a.b.Principal" with the name, "duke", and "c.d.Principal", with the name, "dukette".

另请参阅:

序列化表格

构造器概要

构造器

构造器	说明
PrivateCredentialPermission(String name, String actions)	Creates a new PrivateCredentialPermission with the specified name.

方法概要

限定符和类型	方法	说明
String	getActions()	Returns the "canonical string representation" of the actions.
String	getCredentialClass()	Returns the Class name of the Credential associated with this PrivateCredentialPermission.
String[][]	getPrincipals()	Returns the Principal classes and names associated with this PrivateCredentialPermission.
boolean	implies(Permission p)	Checks if this PrivateCredentialPermission implies the specified Permission.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从类继承的方法 java.security.Permission

checkGuard, getName, newPermissionCollection

构造器详细资料

PrivateCredentialPermission

public PrivateCredentialPermission(String name,
                                   String actions)

Creates a new PrivateCredentialPermission with the specified name. The name specifies both a Credential class and a Principal Set.

参数:

name - the name specifying the Credential class and Principal Set.

actions - the actions specifying that the Credential can be read.

抛出:

IllegalArgumentException - if name does not conform to the correct syntax or if actions is not "read".

方法详细资料

getCredentialClass

public String getCredentialClass()

Returns the Class name of the Credential associated with this PrivateCredentialPermission.

返回:

the Class name of the Credential associated with this PrivateCredentialPermission.

getPrincipals

public String[][] getPrincipals()

Returns the Principal classes and names associated with this PrivateCredentialPermission. The information is returned as a two-dimensional array (array[x][y]). The 'x' value corresponds to the number of Principal class and name pairs. When (y==0), it corresponds to the Principal class value, and when (y==1), it corresponds to the Principal name value. For example, array[0][0] corresponds to the class name of the first Principal in the array. array[0][1] corresponds to the Principal name of the first Principal in the array.

返回:

the Principal class and names associated with this PrivateCredentialPermission.

implies

public boolean implies(Permission p)

Checks if this PrivateCredentialPermission implies the specified Permission.

This method returns true if:

• p is an instanceof PrivateCredentialPermission and
• the target name for p is implied by this object's target name. For example:

    [* P1 "duke"] implies [a.b.Credential P1 "duke"].
    [C1 P1 "duke"] implies [C1 P1 "duke" P2 "dukette"].
    [C1 P2 "dukette"] implies [C1 P1 "duke" P2 "dukette"].
   

指定者:

implies 在类中 Permission

参数:

p - the Permission to check against.

返回:

true if this PrivateCredentialPermission implies the specified Permission, false if not.

getActions

public String getActions()

Returns the "canonical string representation" of the actions. This method always returns the String, "read".

指定者:

getActions 在类中 Permission

返回:

the actions (always returns "read").