/**
* Prepares session after waking up
*
* @param int $expiry
* @param string $salt
* @param int $cost
* @return bool
* @throws SessionException
*/
public function decodeData(int $expiry, string $salt, int $cost) : bool
{
// Check if this session needs decoding
if (is_array($this->data) || empty($this->encoded)) {
throw new SessionException(__METHOD__, "Session is already decoded", 1502);
}
// Check validity
$span = microtime(true) - $this->timeStamp["last"];
if ($span >= $expiry) {
// Session has expired
return false;
}
// Checksum
if (!hash_equals(Session::saltedHash($this->encoded, $salt, $cost), $this->hash)) {
throw new SessionException(__METHOD__, "Session checksum failed", 1503);
}
// Decode data
$this->data = unserialize($this->encoded, ["allowed_classes" => ["Comely\\IO\\Session\\ComelySession\\Bag"]]);
if (!$this->data instanceof Bag) {
throw new SessionException(__METHOD__, "Failed to un-serialize data bags", 1504);
}
// Release "encoded" property
$this->encoded = null;
// Successfully decoded
return true;
}
