Password lock alpha version

function changerecoveryid() --Change id of the computer for the ftp recovery
--needs to be implemented
end

function ftprecovery() --Ftp recovery of password using the ftp id
--needs to be implemented
end

function changesafety() --Change safety code password
--Needs to be tested
term.clear()
term.setCursorPos(1,1)
write("New safety code: ")
newpass = read("*")
term.clear()
term.setCursorPos(1,1)
while true do
term.clear()
term.setCursorPos(1,1)
write("Confirm code: ")
confirm = read("*")
if newpass == confirm then
file = fs.open("login/safety","w")
file.write(newpass)
file.close()
print("Password set..")
sleep(2)
term.clear()
term.setCursorPos(1,1)
break
elseif newpass == "" then
term.clear()
term.setCursorPos(1,1)
break
else
term.clear()
term.setCursorPos(1,1)
write("Confirmation failed. Please try again.")
sleep(1)
end
end
--Needs to be tested
end

function changepass() --Change password function
--Needs to be tested
term.clear()
term.setCursorPos(1,1)
write("New password: ")
newpass = read("*")
term.clear()
term.setCursorPos(1,1)
while true do
term.clear()
term.setCursorPos(1,1)
write("Confirm password: ")
confirm = read("*")
if newpass == confirm then
file = fs.open("login/password","w")
file.write(newpass)
file.close()
print("Password set..")
sleep(2)
term.clear()
term.setCursorPos(1,1)
break
elseif newpass == "" then
term.clear()
term.setCursorPos(1,1)
break
else
term.clear()
term.setCursorPos(1,1)
write("Confirmation failed. Please try again.")
sleep(1)
end
end
--Needs to be tested
end

--The logged function (deletes .blocked, .nsafety, and resets attempts) and opens main control menu
function logged()
while true do
fs.delete("login/.blocked")
fs.delete("login/.nsafety")
file = fs.open("login/attempt","w")
file.write("0")
file.close()
term.clear()
term.setCursorPos(1,1)
print("Welcome!")
print("1: Login")
print("2: Change password")
print("3: Change safety code")
print("4: Change default computer id for pass recovery")
choice = read()
if choice == 1 then
error()
elseif choice == 2 then
changepass()
elseif choice == 3 then
changesafety()
elseif choice == 4 then
changerecoveryid()
end
end
end

function first() --First time setup
term.clear()
term.setCursorPos(1,1)
print("This is the first time you login!")
sleep(2)
term.clear()
term.setCursorPos(1,1)
print("Please enter your password")
sleep(2)
changepass()
file = fs.open("login/.nft","w")
file.close()
term.clear()
sleep(1)
term.clear()
term.setCursorPos(1,1)
print("Please enter your safety code")
sleep(2)
changesafety()
sleep(1)
term.clear()
term.setCursorPos(1,1)
print("Please enter your remote recovery computer id")
sleep(2)
changerecoveryid()
term.clear()
term.setCursorPos(1,1)
textutils.slowPrint("Initializing...")
sleep(1)
end

--The unblocking function (deletes .blocked, .nsafety, and resets attempts)
function unblock()
fs.delete("login/.blocked")
fs.delete("login/.nsafety")
file = fs.open("login/attempt","w")
file.write("0")
file.close()
term.clear()
term.setCursorPos(1,1)
print("Terminal unblocked! :D")
sleep(2)
end

--The blocking function
function block()
while true do
file = fs.open("login/.blocked","w")
file.close()
term.clear()
term.setCursorPos(1,1)
print("Terminal blocked!")
print("1: Safety code (works only once and only one attempt)") --Safety code unblocks the system once
print("2: Send bypass code to default computer") --Bypass code sent to default listed computer Bypasses the password and lets you change it (if the feature is enabled)
print("Enter your option below:")
choice = read()
if choice == 1 then
    if not fs.exists("login/.nsafety") and fs.exists("login/safety") then
        file = fs.open("login/safety","r")
        correctsafecode = file.readAll()
        file.close()
        inputedsafecode = read("*")
        if inputedsafecode == correctsafecode then
        unblock()
        return
    else
        file = fs.open("login/.nsafety","w")
        file.close()
    end
    end
    if not fs.exists("login/safety") then
    term.clear()
    term.setCursorPos(1,1)
    print("Safety code was not set or deleted..")
    sleep(2)
    end
    if fs.exists("login/.nsafety") then
    term.clear()
    term.setCursorPos(1,1)
    print("Safety code was already entered..")
    sleep(2)
    end
elseif choice == 2 then
ftprecovery()
--needs to be implemented
elseif choice ~= 1 or choice ~= 2 then
print("Incorrect choice")
sleep(1)
end
end
end

function check()
    if fs.exists("login/.blocked") then block() end --Retains the block session
    if fs.exists("login/.nlocking") then --Checks if locking feature is on or off and also force repair .nft and attempts files
    lock = 0
    file = fs.open("login/attempt","w")
    file.write("0")
    file.close()
    file = fs.open("login/.nft","w")
    file.close()
    return 0
else
lock = 1
--Checking password files and .nft data (the data that shows if the user is logging in for the first time)
--And blocks and repair them and restore defaults if needed
if not fs.exists("login/.nft") and fs.exists("login/password") then
    file = fs.open("login/.nft","w")
    file.close()
    end
if not fs.exists("login/.nft") and not fs.exists("login/password") then
    first()
    end
if fs.exists("login/.nft") and not fs.exits("login/password") then --Attempt to call nil!? ;(
    file = fs.open("login/.nft","w")
    file.close()
    term.clear()
    term.setCursorPos(1,1)
    print("Password was deleted or corrupted!")
    sleep(2)
    block()
    end
--Checking the attempts and maxattempts files and blocks and repair them and restore defaults if needed
if not fs.exists("login/attempt") and fs.exists("login/.nft") then
file = fs.open("login/attempt","w")
    file.write("0")
    file.close()
    print("Attempts file was deleted or corrupted!")
    sleep(2)
    block()
    end
if not fs.exists("login/attempt") and not fs.exists("login/.nft") then
file = fs.open("login/attempt","w")
    file.write("0")
    file.close()
    end
if not fs.exists("login/maxattempt") and not fs.exists("login/.nft") then
file = fs.open("login/attempt","w")
    file.write("3")
    file.close()
    end
if not fs.exists("login/maxattempt") and fs.exists("login/.nft") then
file = fs.open("login/attempt","w")
    file.write("3")
    file.close()
    print("Maxattempts file was deleted or corrupted!")
    sleep(2)
    block()
    end
--Read attempts and maxattempts from file
file = fs.open("login/attempt","r")
attempts = file.readAll()
file.close()
file = fs.open("login/maxattempt","r")
maxattempts = file.readAll()
file.close()
end
end

--Counts attempts and blocks if limit exceeded
function attempts()
attempts = attempts + 1
if attempts >= maxattempts then
    print("You exceeded the attempts limit!")
    sleep(2)
    block()
    end
end
--Main part of the program
while true do
check()
if lock == 1 then
    term.clear()
    term.setCursorPos(1,1)
    print("")
    print("Terminal locked")
    print("")
    write("Password: ")
    file = fs.open("login/password","r")
    correctpass = file.readAll()
    file.close()
    pass = read("*")
    if pass == correctpass then logged()
    else
    attempts()
    end
end
end