When there is another application that is linked to mahara via some SSO, it is sometimes wanted to not use the mahara login page.
This feature adds a new config option externallogin which specifies a page that will log the user in to the application somehow.
A common example of this would be when you have a Moodle and a Mahara, and there are no local Mahara users (only mnet ones via the Moodle).
For this, we could have a config option such as
$cfg->externallogin = 'http://moodle.example.com/auth/mnet/jump.php?hostwwwroot={wwwroot}&wantsurl={shorturlencoded}';
That would then redirect a user from a page requiring login to the moodle login page, then redirect them back! Exciting!
A note about that example config option, the wwwroot in mahara uses a trailing slash, but moodle incorrectly doesn't trim it (even though it trims it when adding the peer). See MDL-30042 (http://tracker.moodle.org/browse/MDL-30042)
https:/