In our application based on Symfony2 we would like to create a list of which of the users in the system that has permissions for a given domain object. We are using ACL and our immediate instinct was to look in the ACL-object returned from the ACLProvider of the domain object in question, for methods that could return the users (or at least SecurityIdentities) that has permissions, but I could not find such methods.
We are certain that this functionality is available through the API, but we cannot find where these methods are hidden.
EDIT An alternative would be to look up these connections in the acl-tables directly and finding out that way, but it would not be very pretty and we would probably be reinventing the wheel.