Error with Password Server (Need help!)

ExtraRandom, on 02 September 2012 - 03:43 PM said:

So i just followed the roaming profiles tutorial on the wiki (link in spoiler) and the server runs fine but when using one of the PC's meant to be connected to the system i get the error

startup:9: attempt to call nil

Spoiler

http://computercraft...oaming_Profiles

local locker = true
local failed = true
local attempted_login = true
local password_server = 68
rednet.open("left")
while locker do
attempted_login = false
term.clear()
term.setCursor(1,1)
print("Welcome to a TEST PC")
print("What would you like to do?")
print("[1] Login (*)")
print("[2] Shutdown")
write(">")
local input = read()
if input == "2" then
  os.shutdown()
elseif input == "1" then
  attempted_login = true
  print("Please Login....")
  write("Username: ")
  local username = read()
  write("Password: ")
  local password = read ("*")
  rednet.send(password_server, username)
  senderId, message, distance = rednet.receive(5)
  if password == message then
   failed = false
   locker = false
   term.clear()
   term.setCursorPos(1,1)
   print("Welcome ", username)
  else
   print("Not Authorised.")
   sleep(1)
  end
else
  print("Command Not Recognised...")
  sleep(2)
end
end

local locker = true
local failed = true
local attempted_login = true
local password_server = 68
rednet.open("left")
while locker do
attempted_login = false
term.clear()
term.setCursorPos(1,1) --see fix down below
print("Welcome to a TEST PC")
print("What would you like to do?")
print("[1] Login (*)")
print("[2] Shutdown")
write(">")
local input = read()
if input == "2" then
  os.shutdown()
elseif input == "1" then
  attempted_login = true
  print("Please Login....")
  write("Username: ")
  local username = read()
  write("Password: ")
  local password = read ("*")
  rednet.send(password_server, username)
  senderId, message, distance = rednet.receive(5)
  if password == message then
   failed = false
   locker = false
   term.clear()
   term.setCursorPos(1,1)
   print("Welcome ", username)
  else
   print("Not Authorised.")
   sleep(1)
  end
else
  print("Command Not Recognised...")
  sleep(2)
end
end

 term.setCursorPos(1, 1) 

 term.setCursor(1, 1)

sjele, on 02 September 2012 - 07:58 PM said:

I have noted the point of fixing

local locker = true
local failed = true
local attempted_login = true
local password_server = 68
rednet.open("left")
while locker do
attempted_login = false
term.clear()
term.setCursorPos(1,1) --see fix down below
print("Welcome to a TEST PC")
print("What would you like to do?")
print("[1] Login (*)")
print("[2] Shutdown")
write(">")
local input = read()
if input == "2" then
  os.shutdown()
elseif input == "1" then
  attempted_login = true
  print("Please Login....")
  write("Username: ")
  local username = read()
  write("Password: ")
  local password = read ("*")
  rednet.send(password_server, username)
  senderId, message, distance = rednet.receive(5)
  if password == message then
   failed = false
   locker = false
   term.clear()
   term.setCursorPos(1,1)
   print("Welcome ", username)
  else
   print("Not Authorised.")
   sleep(1)
  end
else
  print("Command Not Recognised...")
  sleep(2)
end
end

It is supposed to be

 term.setCursorPos(1, 1) 

and not

 term.setCursor(1, 1)

thesbros, on 02 September 2012 - 08:15 PM said:

That program on the wiki has a lot of bugs, I'll edit it and hopefully fix them.

validSender = {
   [13] = true,
   [14] = true,
   [15] = true,
}
passwdb = {
--  usrname	   password
   ["hello"]   = "scriptkitty",
   ["creeper"] = "passssssssssword",
}

function nextlogin()
   -- keep receiving messages until we get one
   -- from a valid sender
   local senderID, message
   repeat
	 senderID, message = rednet.receive()
   until validSender[senderID]
   -- seperate username and password from the message
   -- and return them
   local msgPattern = "usr{([%w]*)}passwd{([%w]*)}"
   return string.match(message, msgPattern)
end
	 
for usrname, password in nextlogin do
   if passwdb[usrname] == password then
	  -- code for valid response goes hhere
   else
	  -- code for invalid responce goes here
   end
end