public final class ServicePermission extends Permission implements Serializable
A ServicePermission contains a service principal name and a list of actions which specify the context the credential can be used within.
The service principal name is the canonical name of the
KerberosPrincipal supplying the service, that is
the KerberosPrincipal represents a Kerberos service
principal. This name is treated in a case sensitive manner.
An asterisk may appear by itself, to signify any service principal.
Granting this permission implies that the caller can use a cached credential (TGT, service ticket or secret key) within the context designated by the action. In the case of the TGT, granting this permission also implies that the TGT can be obtained by an Authentication Service exchange.
The possible actions are:
initiate - allow the caller to use the credential to initiate a security context with a service principal. accept - allow the caller to use the credential to accept security context as a particular principal.For example, to specify the permission to access to the TGT to initiate a security context the permission is constructed as follows:
To obtain a service ticket to initiate a context with the "host" service the permission is constructed as follows:
For a Kerberized server the action is "accept". For example, the permission necessary to access and use the secret key of the Kerberized "host" service (telnet and the likes) would be constructed as follows:
- See Also:
- Serialized Form
Modifier and Type Method Description
Object obj)(Checks two ServicePermission objects for equality.
()Returns the canonical string representation of the actions.
()Returns the hash code value for this object.
Permission p)(Checks if this Kerberos service permission object "implies" the specified permission.
()Returns a PermissionCollection object for storing ServicePermission objects.
ServicePermissionCreate a new
ServicePermissionwith the specified
servicePrincipal- the name of the service principal. An asterisk may appear by itself, to signify any service principal.
action- the action string
impliespublic boolean implies(Permission p)Checks if this Kerberos service permission object "implies" the specified permission.
More specifically, this method returns true if all of the following are true (and returns false if any of them are not):
- p is an instanceof
- p's actions are a proper subset of this
- p's name is equal to this
ServicePermission's name or this
ServicePermission's name is "*".
- p is an instanceof
equalspublic boolean equals(Object obj)Checks two ServicePermission objects for equality.
hashCodepublic int hashCode()Returns the hash code value for this object.
getActionspublic String getActions()Returns the canonical string representation of the actions. Always returns present actions in the following order: initiate, accept.
newPermissionCollectionpublic PermissionCollection newPermissionCollection()Returns a PermissionCollection object for storing ServicePermission objects.
ServicePermission 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.