logged = 0
function checklogin(username,password)
if username == nil or password == nil then
shell.run("RedTechServer")
else
local file = fs.open(username, "r")
if password == file.readLine() then
logged = 1
else
logged = -1
end end end


while true do
id,msg = rednet.receive()
print("User " .. id .. " has sent out the message: " .. msg)
  
   if msg == ("login") then
local idlat = id 
logged = 0
print("Received Login request")
    id,msg = rednet.receive()
if msg ~= "" then
print("Received Username")
     local user = msg
    id,msg = rednet.receive()
if msg ~= "" then
print("Received Password")
     local pass = msg
    checklogin(user,pass)
   if logged == 1 then
print("confirmed")
    rednet.send(idlat,"confirmed") 
   else if logged == -1 then
print("wrong combination")
rednet.send(idlat, "wrong")
else 
end end else rednet.send(idlat,"wrong") end else rednet.send(idlat,"wrong") end
else

end

end