Discourse as an SAML, OAUTH IDP?

I was wondering if anyone knows of a way to have discourse act as an IDP (identity Provider) using SAML or OAUTH2.

im thinking about setting up a network of sites and would like for the forums to be the central spot for logging in.

I did notice on the boards here that CAS is enabled by default. That might work however if I read correctly it is limited to same domain emails? is this correct?



That is built in, OAUTH2 provider etc would require a custom built plugin, no such plugin exists.