user registration service provider application

[Marcus Schopen]

Hi,

I'm looking for a solution to offer users a kind of self-register
website for a matrix synapse server. Synapse itself does not (yet)
provide the possibility of a SAML / Shibboleth login, so I have to
create local accounts. For the creation of these account I thought
about providing a kind of register website as SP where the user has to
login by Shibboleth. The IDM returns data like the ID and e-mail and
finally only an internal http request is sent from the SP to the
synapse server, which creates the account and sends the user a
temporary password.

Now my question is, are there any projects that you can take as a
starting point without having to completely program everything
yourself?

Ciao
Marcus