what's the 'authority' thing?

@lambadalambda host + port

yeah, but, why do you check it

ah i see, you're trying to check if the blocked person is on this server, right?

yes

to do that:

1. grab the user by the blocked object (which is the blocked user, to most probably is th same but that's not guaranteed. Use User.get_cached_by_ap_id for that.
2. that user has a field 'local' which will be true if the user is local. No need to check any url.

Same goes for getting the author