compbox

function cPrint(y, text)
  size = term.getSize()
  term.setCursorPos(size/2-math.floor(#text/2), y)
  write(text)
end

local oldOpen = fs.open
local oldDelete = fs.delete
local oldMove = fs.move
local oldCopy = fs.copy

fs.open = function(fileName, mode)
  if fileName:sub(1, 3) == "rom" or fileName:sub(1, 5) == "disk2" then
    return oldOpen(fileName, mode)
  else
    return false
  end
end

fs.delete = function(fileName)
  if fileName:sub(1, 5) == "disk2" then
    return oldDelete(fileName)
  else
    return false
  end
end

fs.move = function(fileName, destination)
  if fileName:sub(1, 5) == "disk2" then
    return oldMove(fileName, destination)
  else
    return false
  end
end

fs.copy = function(fileName, destination)
  if fileName:sub(1, 5) == "disk2" then
    return oldCopy(fileName, destination)
  else
    return false
  end
end

term.clear()
cPrint(5, "Public Computer Box")
cPrint(6, "Step in and press any key")
local evt = os.pullEvent("key")

local timeSite = http.get("http://www.timeapi.org/utc/now?format=%25a%20%25b%20%25d%20%25Y%20%25I:%25M:%25S")
local time = timeSite.readAll()
local logTable = {"Computer Box login", time}
local logString = textutils.serialize(logTable)

rednet.open("back")
rednet.send(118, logString)
rednet.close("back")

term.clear()
term.setCursorPos(1,1)
print("BoxOS 1.4")