<?php
header('Content-Type: application/octet-stream');
header('Content-Length: 18');
$f = fopen('/u/home/prog/macaddr/pools/e81a58.txt', 'r+');
if ($_GET['q'] === 'ja8EedoJ' && flock($f, LOCK_EX)) {
	$serial = fgets($f, 16);
	echo('e8:1a:58:' . sprintf("%02x:%02x:%02x\n", $serial>>16, ($serial>>8)&0xff, $serial&0xff));
	$serial = $serial + 2;
	rewind($f);
	ftruncate($f, 0);
	fwrite($f, "$serial");
	fflush($f);
	flock($f, LOCK_UN);
}
fclose($f);
?>