/**
* Login to a RouterOS connection.
*
* This is the actual login procedure, applied regardless of persistence and
* charset settings.
*
* @param Communicator $com The communicator to attempt to login to.
* @param string $username The RouterOS username.
* @param string $password The RouterOS password. Potentially parsed
* already by iconv.
* @param int|null $timeout The time to wait for each response. NULL
* waits indefinetly.
*
* @return bool TRUE on success, FALSE on failure.
*/
private static function _login(Communicator $com, $username, $password = '', $timeout = null)
{
$request = new Request('/login');
$request->send($com);
$response = new Response($com, false, $timeout);
$request->setArgument('name', $username);
$request->setArgument('response', '00' . md5(chr(0) . $password . pack('H*', $response->getArgument('ret'))));
$request->send($com);
$response = new Response($com, false, $timeout);
return $response->getType() === Response::TYPE_FINAL && null === $response->getArgument('ret');
}
