## Put this in LocalSettings.php


require_once "extensions/CasAuthentication.php";

$wgGroupPermissions['*']['edit'] = false;
$wgGroupPermissions['user']['edit'] = false;

$wgAutopromote['emailconfirmed'] = APCOND_EMAILCONFIRMED;

$wgImplicitGroups[] = 'emailconfirmed';

$wgGroupPermissions['emailconfirmed']['edit'] = true;