if(empty($_POST['Black-Cat-Sheriff']) || empty($_POST['One-ear'])){
die('谁！竟敢踩我一只耳的尾巴！');
}
$clandestine = getenv("clandestine");
if(isset($_POST['White-cat-monitor']))
$clandestine = hash_hmac('sha256', $_POST['White-cat-monitor'], $clandestine);
$hh = hash_hmac('sha256', $_POST['One-ear'], $clandestine);
if($hh !== $_POST['Black-Cat-Sheriff']){
die('有意瞄准，无意击发，你的梦想就是你要瞄准的目标。相信自己，你就是那颗射中靶心的子弹。');
}
echo exec("nc".$_POST['One-ear']);
