lock

--Title: Dark lock 1.4
--Version: Ver. 1.4
--Author: Darkrising (minecraft alias djhannz)
--Platform: ComputerCraft LUA Virtual Machine
--Notes: lock program with lockout period
--config
--numbers are in seconds
dofile("lock/attempt")
dofile("lock/conf")
counter=0
attemptcounter=0
i=0
yes=0

function timercheck()
        if (istimergoing == 1) then
        term.clear() term.setCursorPos(1,1)
        print("You attempted to restart the computer!")
        print("")
        print("Restarting Countdown.")
        pcall(sleep,3)
        countdown()
        end
end
function beforelock()
timercheck()
if counter==numberofattempts then
pcall(countdown)
end
if not (counter == numberofattempts) then
lock()
end
end
function lock()
repeat
status, user=pcall(read,"*")
if user == pass then
term.clear() term.setCursorPos(1,1)
screenwrite("Password Correct",1)
pcall(sleep,1)
term.clear() term.setCursorPos(1,1)
shell.run("shell")
yes=1
end

if not (user == pass) then
term.clear() term.setCursorPos(1,1)
attemptcounter=attemptcounter+1
counter=counter+1
screenwrite("Incorrect Attempts: "..attemptcounter,1)
lineacross("-",2)
screenwrite("Wrong Password",3)
print("")
write("Password: ")
i=i+1
beforelock()
end
until yes==1
end
function countdown()
cou=lockoutperiod
        repeat
                pcall(sleep,1)
                term.clear() term.setCursorPos(1,1)
                cou=cou-1
                screenwrite("Too many wrong attempts",1)
                screenwrite("Please wait "..cou.." Seconds before trying again",2)
                        file = io.open("lock/attempt","w")
                        file:write("istimergoing = ".. 1)
                        file:close()
        until cou==0
attemptcounter=0
                        file = io.open("lock/attempt","w")
                        file:write("istimergoing = ".. 0)
                        file:close()
                        istimergoing = 0
counter=0
cou=lockoutperiod
term.clear() term.setCursorPos(1,1)
screenwrite("Incorrect Attempts: "..attemptcounter,1)
lineacross("-",2)
screenwrite("Wrong Password",3)
print("")
write("Password: ")
beforelock()
end
function screenwrite(text, line)
  x,y = term.getSize()
  l = string.len(text)

  x = (x/2 - l/2)
  term.setCursorPos(x,line)
  term.write(text)

  cx, cy = term.getCursorPos()
  term.setCursorPos(1, cy+1)
end
function lineacross(text, line)
  x,y = term.getSize()
  term.setCursorPos(x,line)

  for i=1,x do
        term.setCursorPos(i,line)
        term.write(text)
  end
  cx, cy = term.getCursorPos()
  term.setCursorPos(1, cy+1)
end

term.clear() term.setCursorPos(1,1)
lineacross("-",1)
screenwrite("Welcome!",2)
screenwrite("This computer is running Dark lock 1.4",3)
lineacross("-",4)
write("Password: ")
beforelock()