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<?php
class SessionHandler implements SessionHandlerInterface {
private static $instance;
private $db;
public static function get() {
if (self::$instance == null)
self::$instance = new self();
return self::$instance;
}
private function __construct() {
$this->db = Db::get();
session_set_save_handler("SessionHandler::open", "SessionHandler::close",
"SessionHandler::read", "SessionHandler::write", "SessionHandler::destroy",
"SessionHandler::gc");
}
public static function open($save_path, $name) { }
public static function read ($id){
$query = "SELECT data FROM ttrss_sessions WHERE id='$id'";
$res = $this->db->query("SELECT data FROM ttrss_sessions WHERE id='$id'");
if ($this->db->num_rows($res) != 1) {
"INSERT INTO ttrss_sessions (id, data, expire)
VALUES ('$id', '$data', '$expire')";
} else {
$data = $this->db->fetch_result($res, 0, "data");
return base64_decode($data);
}
}
public static function write($id, $data) {
if (! $data) {
return false;
}
$data = $this->db->escape_string( base64_encode($data), false);
$expire = time() + max(SESSION_COOKIE_LIFETIME, 86400);
$query = "UPDATE ttrss_sessions SET data='$data',
expire = '$expire' WHERE id='$id'";
$this->db->query( $query);
return true;
}
public static function close () { }
public static function destroy($session_id) {
$this->db->query("DELETE FROM ttrss_sessions WHERE id = '$session_id'");
return true;
}
public static function gc($maxLifeTime) {
$this->db->query("DELETE FROM ttrss_sessions WHERE expire < " time() - $maxLifeTime);
return true;
}
}
?>
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