central

con = fs.open("config","r")

function readData()
  dataFile = fs.open("disk/data","r")
  data = {}
  l = dataFile.readLine()
  while l ~= nil do
    table.insert(data, l)
    l = dataFile.readLine()
  end
  dataFile.close()
  return data
end

rednet.open(con.readLine())

while true do
  id,mes,dis = rednet.receive()
  if mes[1] == 1 then
    print("Sending data to " .. id)
    rednet.send(id, readData())
  elseif mes[1] == 3 then
    data = readData()
    dataFile = fs.open("disk/data","w")
    dataFile.writeLine(mes[2])
    for i,v in pairs(data) do
      dataFile.writeLine(v)
    end
    dataFile.close()
    print("New data from "..id)
    rednet.broadcast({2})
  end
end