Add the possibility for a user-defined value for admin role in OIDC role_field (e.g. different than admin)

[nodje]

Is your feature request related to a problem? Please describe.

Not an issue proper but a lack of flexibility.

An IDP instance usually serves many Service Providers and sources its authentication from an LDAP/Active Directory instance that may only provide a list of groups/roles under one list attribute.
In this context, authentications may come as ["admin_app1", "superadmin_app2", "project1_dev"]

AFAIU, the OIDC role_field, as defined for instance with "role_field": "sftpgo_role", needs to have admin value for the user to be considered an SFTPGo admin.

This could be difficult to provide in a context as described above.

Describe the solution you'd like

Have the ability to set the admin OIDC role_field value to a custom value.

It'd be handy to be able to say role_field value superadmin is the one that gives admin role to a user.

Describe alternatives you've considered

No response

What are you using SFTPGo for?

Enterprise

Additional context

No response

[sourcx]

I think this is a great suggestion and I'm in need of it as well.

It might also be possible to set the correct group property with a pre_login_hook perhaps. Did you by any chance already take a look at that?