server/onyx/include/admin/chrono.php

<?php

if(!defined('ONYX')) exit;

if (count($p) > 2)
{
  switch($p[2])
  {
  case "start":
    file_put_contents($VAR["misc_dir"]."/shared/challenge_started", time() + (intval($_POST["time"]) - 240) * 60);
    pipe_backend_scheduler("resetreset:HOME:all:SY");
    break;

  case "init":
    unlink($VAR["misc_dir"]."/shared/challenge_started");
    pipe_backend_scheduler("resetreset:HOME:all:SY");
    break;
  }
}

header("Location: /".SALT_ADMIN."/");
exit();