Sorry I took so long to answer:
I've (tried to) fix(ed) this in Octobre last year. As you can see, Line 310 is only used when using SSO or OAuth2 as an authentication method.
The problem is that the login_processing() will navigate away from this php file, so there is no use to add login_processing2() at that point. As you can see it adds a redirect URL to the session. The flow SHOULD then work as follows:
1. If you're not logged in, the login_processing() should redirect you to your sso solution, and than that will (normally) redirect back at the index.php file.
2. There login_processing2() is called
3. In index.php there is a check whether the redirect session variable exists. It's deleted and the redirection (to the play) is executed.
So, I don't know where this process goes wrong at your install. Could you enable development mode by setting $development to true (aroiund line 46) in config.php, try a login and look in the error_logs/debug.log file if you can follow the _debug messages (such as on line 308) to see what is happening?
I would not have expected the normal (non-SSO) loigin prompt to be honest, so that might be an indication that I missed something when I tried to fix this.
Also, just to be sure, we're talink about setting the sharing to Password and then using the normal play.php link to look at an LO. Correct?
If you could send me an excerpt of the debug.log, I'll see whther I can fix this.
Tom
