I am looking at migrating an old app to MVC4 but can't yet modify the database. The existing database already has it's own user / group / membership tables setup (in a rather quirky way might I add, but it works).
With the MVC3 style MembershipProviders I could roll my own extending what I needed to login, check role permissions, modify user attributes etc. but I'm at a loss as to how to achieve this with MVC4 and it's SimpleMembership and then how to use OpenAuth alongside it as an alternate way to login.
I've been looking around but there seems to be very little content online yet regarding it, any ideas?
I don't require a SimpleMembership implementation, if anyone is aware of another similar provider that would do too.