function verify_facebook_app_authentication()
{
global $vbulletin;
// get the userinfo associated with current logged in facebook user
// return false if not logged in to fb, or there is no associated user record
if (!($fb_userid = vB_Facebook::login_facebook_instance()->getLoggedInFbUserId())) {
return false;
}
if (!($vbulletin->userinfo = $vbulletin->db->query_first("\n\t\tSELECT userid, usergroupid, membergroupids, infractiongroupids, username, password, salt\n\t\tFROM " . TABLE_PREFIX . "user\n\t\tWHERE fbuserid = '{$fb_userid}'\n\t"))) {
return false;
}
// facebook login successful, fetch hook and return true
$return_value = true;
($hook = vBulletinHook::fetch_hook('login_verify_success')) ? eval($hook) : false;
return $return_value;
}
/**
* Returns the login_facebook instance of the facebook client api object
*
* @return vB_Facebook
*/
public static function login_facebook_instance()
{
global $vbulletin;
if (!isset(self::$login_facebook_instance)) {
// boot up the facebook api
self::$login_facebook_instance = new vB_Facebook($vbulletin->options['facebookappid'], $vbulletin->options['facebooksecret']);
}
return self::$login_facebook_instance;
}
