ryzom-core/web/public_php/ams/inc/login.php

<?php
/**
* This function is being used to load info that's needed for the login page.
* it will try to auto-login, this can only be used while ingame, the web browser sends additional cookie information that's also stored in the open_ring db.
* We will compare the values and if they match, the user will be automatically logged in!
* @author Daan Janssens, mentored by Matthew Lagoe
*/
function login() {
	global $INGAME_WEBPATH;
	global $WEBPATH;
	if (helpers::check_if_game_client()) {
		//check if you are logged in ingame, this should auto login
		$result = Helpers::check_login_ingame();
		if ($result) {
			//handle successful login
			$_SESSION['user'] = $result['name'];
			$_SESSION['id'] = WebUsers::getId($result['name']);
			$_SESSION['ticket_user'] = serialize(Ticket_User::constr_ExternId($_SESSION['id']));
			//go back to the index page.
                header("Cache-Control: max-age=1");
			if (Helpers::check_if_game_client()) {
				header('Location: ' . $INGAME_WEBPATH);
			} else {
				header('Location: ' . $WEBPATH);
			}
			throw new SystemExit();
		}
	}
	$pageElements['ingame_webpath'] = $INGAME_WEBPATH;
	$GETString = "";
	foreach ($_GET as $key => $value) {
		$GETString = $GETString . $key . '=' . $value . "&";
	}
	if ($GETString != "") {
		$GETString = '?' . $GETString;
	}
	$pageElements['getstring'] = $GETString;
	return $pageElements;
}