ICBM Launch System With Touchscreen Password ( Advanced Pc )

Hi
I recreated a program but you can still terminate it eventho i added this :

local pullEvent = os.pullEvent
os.pullEvent = os.pullEventRaw

Now how can i improve this program and make it unterminatable.

local mon = peripheral.wrap("top")
local pass = "1234"
local passlen = string.len(pass)
local press = "";
tblpad = {};
for i=0,10 do
tblpad[i] = {}
		for x=0,10 do
				tblpad[i][x] = "x"
		end
end


tblpad[2][2] = "1"
tblpad[4][2] = "2"
tblpad[6][2] = "3"
tblpad[2][3] = "4"
tblpad[4][3] = "5"
tblpad[6][3] = "6"
tblpad[2][4] = "7"
tblpad[4][4] = "8"
tblpad[6][4] = "9"
tblpad[4][5] = "0"

function drawpad()
		mon.setBackgroundColor(colors.blue)
		mon.setCursorPos(1,1)
		mon.write(" Code?  ")
		mon.setCursorPos(1,2)
		mon.write(" 1 2 3  ")
		mon.setCursorPos(1,3)
		mon.write(" 4 5 6 ")
		mon.setCursorPos(1,4)
		mon.write(" 7 8 9 ")
		mon.setCursorPos(1,5)
		mon.write("   0   ")
end

function countdown(c)

		for i=1,c do
				mon.setCursorPos(1,1)
				mon.write("	   ")
				mon.setCursorPos(1,2)
				mon.write("	   ")
				mon.setCursorPos(1,3)
				mon.write("   ".. c .."   ")
				mon.setCursorPos(1,4)
				mon.write("	   ")
				mon.setCursorPos(1,5)
				mon.write("	   ")
				sleep(1)
				c = c-1
		end
end

function codeaccept()
rs.setOutput('left', true)
		mon.setBackgroundColor(colors.red)
		mon.setCursorPos(1,1)
		mon.write("-------")
		mon.setCursorPos(1,2)
		mon.write("Prepare")
		mon.setCursorPos(1,3)
		mon.write("  To   ")
		mon.setCursorPos(1,4)
		mon.write("Launch ")
		mon.setCursorPos(1,5)
		mon.write("-------")
sleep(5)
end
function after()
rs.setOutput('back', true) -- Activates Launcher
		mon.setBackgroundColor(colors.red)
		mon.setCursorPos(1,1)
		mon.write("-------")
		mon.setCursorPos(1,2)
		mon.write("Standby")
		mon.setCursorPos(1,3)
		mon.write("  For  ")
		mon.setCursorPos(1,4)
		mon.write("Impact ")
		mon.setCursorPos(1,5)
		mon.write("-------")
sleep(2)
rs.setOutput('back', false)
rs.setOutput('left', false)
sleep(10)
end


function opendoor()
codeaccept()
countdown(10)
after()
os.reboot()
end

function wrongpass()
rs.setOutput('left', true) -- Activates the Siren
		mon.setBackgroundColor(colors.red)
		mon.setCursorPos(1,1)
		mon.write("		")
		mon.setCursorPos(1,2)
		mon.write(" CODE   ")
		mon.setCursorPos(1,3)
		mon.write("		")
		mon.setCursorPos(1,4)
		mon.write("DENIED! ")
		mon.setCursorPos(1,5)
		mon.write("		")
		sleep(20)
rs.setOutput('left', false)
		drawpad()
end
drawpad()

while true do
		event, side, xPos, yPos = os.pullEvent("monitor_touch")
		if tblpad[xPos][yPos] ~= "x" then
				mon.setCursorPos(xPos, yPos)
				mon.setBackgroundColor(colors.red)
				mon.write(tblpad[xPos][yPos])
				sleep(0.2)
				mon.setCursorPos(xPos, yPos)
				mon.setBackgroundColor(colors.green)
				mon.write(tblpad[xPos][yPos])
				press = press .. tblpad[xPos][yPos]
				if string.len(press) == passlen and press == pass then
						press = ""
						opendoor()
				elseif string.len(press) == passlen and press ~= pass then
						press = ""
						wrongpass()
				end
		end
end

Rebooting the computer and running startup (Control+R and Control+S) are hardcoded into the java side of the mod. There is nothing you can do about them, however you can disable Control+T and name the script startup. This is still vulnerable, since if a startup script is detected on a disk drive, it will run that. To make it totally secure, you must encase your computer in bedrcock, with one side open. Then add a startup script.

If not interminable, maybe a deadman switch is close enough?
Maybe use this primary to output a redstone signal or join a network. Then hide a bunch of computers set to autolaunch if the signal is interrupted by a reset or terminate.

It does whats advertised cleanly. The os.reboot may not be desirable if startup is not available.
I might suggest grouping the print screens as a function to reduce the copypasting and future maintenance

Spoiler

local function printScreen(text)
	 for linepos,line in pairs(text) do
		  mon.setCursorPos(1,linepos)
		  mon.write(line)
	 end
end

function wrongpass()
	 --#siren on
	 mon.setBackgroundColor(colors.red)
	 printScreen({
		  "	   ",
		  " CODE  ",
		  "	   ",
		  " DENIED",
		  "	   "})
	 --#wait
	 --#reset
end

Moved to Ask a Pro.

The main thing is I can't make it unterminatable, and that's the main thing i want to avoid the CNTR-T !

seanijoye, on 10 January 2015 - 02:35 PM said:

The main thing is I can't make it unterminatable, and that's the main thing i want to avoid the CNTR-T !

But you've already done that…

local oldPull = os.pullEvent
os.pullEvent = os.pullEventRaw