How to know if user is currently logged in

[yurj (Yuri)]

You can create the iframe src parameter with the current user, like

<iframe src="https://myembedsite.com/page?user=auser" ....

and you can read the user from the url.

A better solution is to use the plone site as the auth provider for the iframe site, using `plone.session': plone.session/plone/session/tktauth.py at master · plone/plone.session · GitHub

See Also:

Automatic log in via cookie

Plone's session plugin (--> plone.session.plugins.session.SessionPlugin) is based on tktauth -- an SSO mechanism which works exactly as you describe it: via a cookie managed by any service component in the same domain. By default, the session plugin (--> acl_users/sessions) is configured to operate stand alone. But, you can easily reconfigure it to cooperate with an external authenticator: for this you would need to define the cookie name and the shared secret used by the external authenticator…

Plone & CGI single-sign-on using mod_auth_tkt

Authentication

GitHub - gavincarr/mod_auth_tkt: Lightweight single-signon authentication module...