CCLS;Client

os.pullEvent = os.pullEventRaw
local failed = true
busr = "root" -- If you ever happen to be unable to log in for some reason, you can use this username as a backup.
bpass = "1955330244" -- If you ever happen to be unable to log in for some reason, you can use this password as a backup.

password_server = 11 -- change to the ID of your password server computer
rednet.open("back") -- change to the side your rednet modem is on
while true do
term.clear()
term.setCursorPos(1,1)
print("Welcome to Aerial Computing.")
print("Please select an option.")
print("[1] Login")
print("[2] Shutdown")
write("> ")
input = read()
if input == "2" then
 os.shutdown()
elseif input == "1" then
 print("Please login.")
 write("Username: ")
 username = read()
 write("Password: ")
 password = read("*")
 if username == busr then
 if password == bpass then
print("Access granted")
break
 end
 end
 rednet.send(password_server, username, true)
 senderId, message, distance = rednet.receive(5)
 if message == "300" then
 print("Invalid Username or Password.")
 sleep(3)
 elseif password == message then
 failed = false
 term.clear()
 term.setCursorPos(1,1)
 print("Welcome ", username)
 break;
 else
 print("Invalid Username or Password.")
 sleep(3)
 end
else
 print("Invalid Command.")
 sleep(2)
end
end