program freezing no error message

function startup()
print("1")
rednet.open("top")
print("please enter your disk")
local event, param1 = os.pullEvent()
if event == "disk"
then
request()
else
print("error")
startup()
end
end
function disk()
print("2")
h = fs.open("disk/keycode", "r")
request()
end
function request()
print("3")
rednet.send(5, "request")
keycode()
end
function keycode()
print("4")
h = fs.open("/disk/keycode", "r")
code = h.readAll()
h.close()
rednet.send(5, code)
var1, var2, var3 = rednet.receive()
print(var1..var2..var3)
if var2 == "auth" then
pin()
else
deny()
end
end
function pin()
print("5")
pin = read("*")
rednet.send(5, pin)
var1, var2, var3 = rednet.receive()
if var2 == "auth" then command() else denied()
end
end
function command()
state = true
print("6")
while state == true do
print("command list")
print("------------")
print("balance")
print("withdraw")
print("logout")
cmd = read()
if cmd == "logout" then logout()
elseif cmd == "balance" then balance()
elseif cmd == "withdraw" then withdraw()
elseif cmd == "transfer" then transfer()
else print("command error")
end
end
end
function logout()
print("7")
rednet.send(5, logout)
state = false
print("please remove your disk")
sleep(5)
startup()
end
function balance()
print("8")
rednet.send(5, "check balance")
var1, var2 = rednet.receive()
print("your balance is "..var2)
end
function withdraw()
print("9")
rednet.send(5, "withdraw")
print("how much do you want to withdraw")
ammount = read()
rednet.send(5, ammount)
var3, var4 = rednet.receive()
print(var4)
command()
end
function deny()
print("10")
print("an error occured")
sleep(3)
os.reboot()
end
startup()

function load()
print("load")
rednet.open("back")
print("activating server")
get()
end
function get()
print("get")
var1, var2, var3 = rednet.receive()
print(tostring(var1)..tostring(var2)..tostring(var3))
if var2 == "request" then request() else deny()
end
endfunction request()
print("request")
var4, var5, var6 = rednet.receive()
print(tostring(var4)..tostring(var5)..tostring(var6))
if fs.exists("usernames/"..tostring(var5)) == true then
pin()
else
deny()
end
end
function pin()
print("pin")
rednet.send(var1, "auth")
var7, var8, var9 = rednet.receive()
print(var7..var8..var9)
h = fs.open("userpins/"..tostring(var5).."/pin", "r")
pinno = h.readAll()
h.close()
if var8 == pinno then auth() else deny()
end
endfunction auth()
print("auth")
rednet.send(var7,"auth")
command()
end
function command()
state = true
print("command")
while state == true do
var10, var11, var12 = rednet.receive()
print(tostring(var10)..tostring(var11)..tostring(var12))
if var11 == "check balance" then checkbalance()
elseif var11 == "withdraw" then withdraw()
  elseif var11 == "transfer" then transfer()
   elseif var11 == "logout" then logout()
  end
end
endfunction checkbalance()
print("checkbalance")
h = fs.open("userbalance/"..tostring(var5).."/balance", "r")
bal = h.readAll()
rednet.send(var10, bal)
end
function withdraw()
print("withdraw")
h = fs.open("userbalance/"..tostring(var5).."/balance", "r")
bal = h.readAll()
h.close()
var13, var14, var15 = rednet.receive()
print(tostring(var13)..tostring(var14)..tostring(var15))
curbal = bal - var14
h = fs.open("userbalance/"..tostring(var5).."/balance", "w")
h.write(tostring(curbal))
h.close()
rednet.send(tostring(var13), tostring(var14).." has been deducted you current balance is "..tostring(curbal))
endfunction transfer()
print("transfer")
end
function logout()
print("logout")
state = false
get()
endfunction deny()
print("deny")
rednet.send(var1, "denied")
end
load()

realid = 5
function spoof(nID)
local getID = os.getComputerID -- Backing up the old function
os.getComputerID = function(nID) -- Overriding it
	return nID or getID() -- Returning the fake id or the regular computer ID
end
endfunction unspoof()
print("end spoof")
  spoof(5)
end
--firewall start
rednet.open("top")
rednet.open("back")
print("1")
while true do
rednet.open("top")
rednet.open("back")
var1, var2, var3 = rednet.receive()
print("id = "..tostring(var1))
print("msg = "..tostring(var2))
print("distance = "..tostring(var3))
print("2")
if var1 == 9  then
rednet.close("top")
rednet.open("back")
print("4")
spoof(var1)
print("5")
rednet.send(4, var2)
print("6")
elseif var1 == 4 then
rednet.close("back")
rednet.open("top")
print("7")
print("8")
spoof(var1)
print("9")
rednet.send(9, var2)
print("10")
else
rednet.send(var1, "deny")
print("11")
end
end