/**
* Destroys all data registered to a session.
* @return void
*/
public function destroy()
{
if (!self::$started) {
throw new Nette\InvalidStateException('Session is not started.');
}
session_destroy();
$_SESSION = NULL;
self::$started = FALSE;
if (!$this->response->isSent()) {
$params = session_get_cookie_params();
$this->response->deleteCookie(session_name(), $params['path'], $params['domain'], $params['secure']);
}
}
/**
* Starts and initializes session data.
*
* @throws Nette\InvalidStateException
* @return void
*/
public function start()
{
if (self::$started) {
return;
}
$this->configure($this->options);
Nette\Diagnostics\Debugger::tryError();
session_start();
if (Nette\Diagnostics\Debugger::catchError($e) && !session_id()) {
@session_write_close();
// this is needed
throw new Nette\InvalidStateException('session_start(): ' . $e->getMessage(), 0, $e);
}
self::$started = true;
/* structure:
__NF: Counter, BrowserKey, Data, Meta, Time
DATA: section->variable = data
META: section->variable = Timestamp, Browser, Version
*/
unset($_SESSION['__NT'], $_SESSION['__NS'], $_SESSION['__NM']);
// old unused structures
// initialize structures
$nf =& $_SESSION['__NF'];
if (empty($nf)) {
// new session
$nf = array('C' => 0);
} else {
$nf['C']++;
}
// session regenerate every 30 minutes
$nfTime =& $nf['Time'];
$time = time();
if ($time - $nfTime > self::REGENERATE_INTERVAL) {
$this->regenerated = $this->regenerated || isset($nfTime);
$nfTime = $time;
}
// browser closing detection
$browserKey = $this->request->getCookie('nette-browser');
if (!$browserKey) {
$browserKey = Nette\Utils\Strings::random();
}
$browserClosed = !isset($nf['B']) || $nf['B'] !== $browserKey;
$nf['B'] = $browserKey;
// resend cookie
$this->sendCookie();
// process meta metadata
if (isset($nf['META'])) {
$now = time();
// expire section variables
foreach ($nf['META'] as $section => $metadata) {
if (is_array($metadata)) {
foreach ($metadata as $variable => $value) {
if (!empty($value['B']) && $browserClosed || !empty($value['T']) && $now > $value['T'] || isset($nf['DATA'][$section][$variable]) && is_object($nf['DATA'][$section][$variable]) && (isset($value['V']) ? $value['V'] : null) != Nette\Reflection\ClassType::from($nf['DATA'][$section][$variable])->getAnnotation('serializationVersion')) {
if ($variable === '') {
// expire whole section
unset($nf['META'][$section], $nf['DATA'][$section]);
continue 2;
}
unset($nf['META'][$section][$variable], $nf['DATA'][$section][$variable]);
}
}
}
}
}
if ($this->regenerated) {
$this->regenerated = false;
$this->regenerateId();
}
register_shutdown_function(array($this, 'clean'));
}
