/* if we have a token AND program state is 'start', change state to 'returned' */
if ($_SESSION['fb_request_token'] != NULL && $_SESSION['fb_state'] === 'start') {
$_SESSION['fb_state'] = $state = 'returned';
}
/*
* 'default': Get a request token from Facebook for new user
* 'returned': The user has authorize the app on Facebook
*/
switch ($state) {
default:
$fs = new FacebookStream($consumer_key, $consumer_secret, $agent);
$token = $fs->getAccessToken();
/* Save token for later */
$_SESSION['fb_request_token'] = $token;
$url = 'http://www.facebook.com/login.php?api_key=';
$url .= $fs->getApiKey();
$url .= '&v=1.0&auth_token=';
$url .= $token;
header('Location:' . $url);
exit;
case 'returned':
$fs = new FacebookStream($consumer_key, $consumer_secret, $agent);
if (!empty($infinite_session) && $_SESSION['fb_userid'] > 0) {
/* Infinite session, headless mode, use FB UserID from database to skip to the API call */
$fs->streamRequest($_SESSION['fb_userid']);
} elseif ($_SESSION['fb_session'] === NULL && $_SESSION['fb_userid'] === NULL) {
/* If the access tokens are already set skip to the API call */
/* Create session */
$session = $fs->getSession($_SESSION['fb_request_token']);
/* Save the session data */
$_SESSION['fb_session'] = (string) $session->session_key;
