| Creates a new temporary
Authentication object for the current secure
object invocation only.
This interface permits implementations to replace the
Authentication object that applies to the current secure
object invocation only. The
org.acegisecurity.intercept.AbstractSecurityInterceptor will replace
the Authentication object held in the
org.acegisecurity.context.SecurityContext SecurityContext for the duration of the secure object callback only, returning it to
the original Authentication object when the callback ends.
This is provided so that systems with two layers of objects can be
established. One layer is public facing and has normal secure methods with
the granted authorities expected to be held by external callers. The other
layer is private, and is only expected to be called by objects within the
public facing layer. The objects in this private layer still need security
(otherwise they would be public methods) and they also need security in
such a manner that prevents them being called directly by external callers.
The objects in the private layer would be configured to require granted
authorities never granted to external callers. The
RunAsManager interface provides a mechanism to elevate
security in this manner.
It is expected implementations will provide a corresponding concrete
Authentication and AuthenticationProvider so that
the replacement Authentication object can be authenticated.
Some form of security will need to be implemented to ensure the
AuthenticationProvider only accepts
Authentication objects created by an authorized concrete
implementation of RunAsManager.
author:
Ben Alex
version:
$Id: RunAsManager.java 1784 2007-02-24 21:00:24Z luke_t $ |