Class DelegationPermission
- java.lang.Object
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- java.security.Permission
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- java.security.BasicPermission
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- javax.security.auth.kerberos.DelegationPermission
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- All Implemented Interfaces:
- Serializable, Guard
public final class DelegationPermission extends BasicPermission implements Serializable
This class is used to restrict the usage of the Kerberos delegation model, ie: forwardable and proxiable tickets.The target name of this
Permissionspecifies a pair of kerberos service principals. The first is the subordinate service principal being entrusted to use the TGT. The second service principal designates the target service the subordinate service principal is to interact with on behalf of the initiating KerberosPrincipal. This latter service principal is specified to restrict the use of a proxiable ticket.For example, to specify the "host" service use of a forwardable TGT the target permission is specified as follows:
DelegationPermission("\"host/foo.example.com@EXAMPLE.COM\" \"krbtgt/EXAMPLE.COM@EXAMPLE.COM\"");To give the "backup" service a proxiable nfs service ticket the target permission might be specified:
DelegationPermission("\"backup/bar.example.com@EXAMPLE.COM\" \"nfs/home.EXAMPLE.COM@EXAMPLE.COM\"");- Since:
- 1.4
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor and Description DelegationPermission(String principals)Create a newDelegationPermissionwith the specified subordinate and target principals.DelegationPermission(String principals, String actions)Create a newDelegationPermissionwith the specified subordinate and target principals.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description booleanequals(Object obj)Checks two DelegationPermission objects for equality.inthashCode()Returns the hash code value for this object.booleanimplies(Permission p)Checks if this Kerberos delegation permission object "implies" the specified permission.PermissionCollectionnewPermissionCollection()Returns a PermissionCollection object for storing DelegationPermission objects.-
Methods inherited from class java.security.BasicPermission
getActions
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Methods inherited from class java.security.Permission
checkGuard, getName, toString
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Constructor Detail
DelegationPermission
public DelegationPermission(String principals)
Create a newDelegationPermissionwith the specified subordinate and target principals.- Parameters:
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principals- the name of the subordinate and target principals - Throws:
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NullPointerException- ifprincipalsisnull. -
IllegalArgumentException- ifprincipalsis empty.
DelegationPermission
public DelegationPermission(String principals, String actions)
Create a newDelegationPermissionwith the specified subordinate and target principals.- Parameters:
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principals- the name of the subordinate and target principals -
actions- should be null. - Throws:
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NullPointerException- ifprincipalsisnull. -
IllegalArgumentException- ifprincipalsis empty.
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Method Detail
implies
public boolean implies(Permission p)
Checks if this Kerberos delegation permission object "implies" the specified permission.If none of the above are true,
impliesreturns false.- Overrides:
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impliesin classBasicPermission - Parameters:
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p- the permission to check against. - Returns:
- true if the specified permission is implied by this object, false if not.
equals
public boolean equals(Object obj)
Checks two DelegationPermission objects for equality.- Overrides:
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equalsin classBasicPermission - Parameters:
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obj- the object to test for equality with this object. - Returns:
- true if obj is a DelegationPermission, and has the same subordinate and service principal as this. DelegationPermission object.
- See Also:
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Object.hashCode(),HashMap
hashCode
public int hashCode()
Returns the hash code value for this object.- Overrides:
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hashCodein classBasicPermission - Returns:
- a hash code value for this object.
- See Also:
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Object.equals(java.lang.Object),System.identityHashCode(java.lang.Object)
newPermissionCollection
public PermissionCollection newPermissionCollection()
Returns a PermissionCollection object for storing DelegationPermission objects.
DelegationPermission objects must be stored in a manner that allows them to be inserted into the collection in any order, but that also enables the PermissionCollection implies method to be implemented in an efficient (and consistent) manner.- Overrides:
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newPermissionCollectionin classBasicPermission - Returns:
- a new PermissionCollection object suitable for storing DelegationPermissions.
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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