GameBox DRM Server

term.clear()
term.setCursorPos(1,1)
print("GameBox DRM Server")
print("This computer's ID is: "..os.getComputerID())
print()
rednet.open("top")
while true do
  local id, msg = rednet.receive()
  if msg == "drmcheck" then
    f = fs.open("/drmcodes","r")
    drm1 = f.readLine()
    drm2 = f.readLine()
    dev1 = f.readLine()
    dev2 = f.readLine()
    f.close()
    sleep(1)
    local i2,m = rednet.receive()
    sleep(1)
    local i3,a = rednet.receive()
    sleep(1)
      if i2 == id and m == drm1 then
        rednet.send(tonumber(id),"OK")
        print("[STND] Serial: "..a.." completed DRM check!")
      elseif i2 == id and m == drm2 then
        rednet.send(tonumber(id),"OK")
        print("[STND] Serial: "..a.." completed DRM check!")
      elseif i2 == id and m == dev1 then
        rednet.send(tonumber(id),"OK")
        print("[DEBUG] Developer DRM code used by Serial: "..a)
      elseif i2 == id and m == dev2 then
        rednet.send(tonumber(id),"OK")
        print("[DEBUG] Developer DRM code used by Serial: "..a)
      else
        rednet.send("nope")
        print("[ERR] Serial Number: "..a.." failed DRM check!")
      end
    end
  end