Shibboleth IDP Upgrade: v2 to v3 and Existing Login and Profile Handlers

[Cantor, Scott]

> I would like to utilize the default "password" flow; however, I need check for
> the existence of a request parameter to check an backend service _before_ the
> login page would be presented.  Is this possible with a custom "action", or
> would this require a custom login flow?

Just use External, that's what it's for.

-- Scott