/**
* Read session data
*
* @param string $sess_id session ID
*
* @return mixed session data if exist, false otherwise
*/
public function read($sess_id)
{
$session = $this->query('hGetAll', $this->id($sess_id));
if (!empty($session)) {
if ($session['expiry'] > TIME) {
return $session['data'];
} else {
// the session did not have time to get in "stored_sessions" and got out of date, it is necessary to return only settings
$this->delete($sess_id);
$session = Session::decode($session['data']);
return Session::encode(array('settings' => !empty($session['settings']) ? $session['settings'] : array()));
}
}
return false;
}
/**
* Read session data
*
* @param string $sess_id session ID
*
* @return mixed session data if exist, false otherwise
*/
public function read($sess_id)
{
$session = db_get_row('SELECT * FROM ?:sessions WHERE session_id = ?s', $sess_id);
if (!empty($session)) {
if ($session['expiry'] > TIME) {
return $session['data'];
} else {
// the session did not have time to get in "stored_sessions" and got out of date, it is necessary to return only settings
db_query('DELETE FROM ?:sessions WHERE session_id = ?s', $sess_id);
$session = Session::decode($session['data']);
return Session::encode(array('settings' => !empty($session['settings']) ? $session['settings'] : array()));
}
}
return false;
}
/**
* Expire session, move it to stored sessions and log out user
*
* @param string $sess_id session ID
* @param array $session session data
*/
public static function expire($sess_id, $session)
{
$sess_data = Session::decode($session['data']);
db_query('REPLACE INTO ?:stored_sessions ?e', array('session_id' => $sess_id, 'data' => self::encode(array('settings' => $sess_data['settings'])), 'expiry' => $session['expiry']));
if (!empty($sess_data['auth'])) {
fn_log_user_logout($sess_data['auth'], $session['expiry']);
}
}
/**
* Garbage collector - move expired sessions to session archive
*
* @param int $max_lifetime session lifetime
*
* @return boolean always true
*/
public function gc($max_lifetime)
{
// Move expired sessions to sessions storage
db_query('REPLACE INTO ?:stored_sessions SELECT * FROM ?:sessions WHERE expiry < ?i', TIME);
$sessions = db_get_array('SELECT * FROM ?:sessions WHERE expiry < ?i', TIME);
if ($sessions) {
foreach ($sessions as $entry) {
fn_log_user_logout($entry, Session::decode($entry['data']));
}
// delete old sessions
db_query('DELETE FROM ?:sessions WHERE expiry < ?i', TIME);
}
// Cleanup sessions storage
db_query('DELETE FROM ?:stored_sessions WHERE expiry < ?i', TIME - SESSIONS_STORAGE_ALIVE_TIME);
return true;
}
