I this there's no need for a binding
How about this?
import Control.Monad (when)
import System.IO
getpasswd :: Handle -> IO String
getpasswd h = do wasEnabled <- hGetEcho h
when wasEnabled (hSetEcho h False)
str <- hGetLine h
when wasEnabled (hSetEcho h True)
return str
On Nov 9, 2007 5:20 PM, Thomas Schilling
On Fri, 2007-11-09 at 10:59 -0500, Taylor Venable wrote:
Hello all,
I've written a little Haskell program to get information from a MySQL database (great thanks to anybody reading this who works on HSQL, by the way) but I want to keep the user's password concealed, obviously. Currently I prompt for it from the terminal, but the problem is that it's echoed just like all other input. I would like to disable input echo when asking for the password, but I'm not sure how. I notice there's a System.POSIX.Terminal module, but I have no idea how to use it, or whether it will do what I want. Any ideas would be greatly appreciated.
Best regards.
In C you usually use: getpasswd (http://docsrv.sco.com:507/en/man/html.S/getpasswd.S.html)
I cannot find it System.Posix, so you might have to write your own FFI bindings. Otherwise, you can play around with the terminal modes from:
http://haskell.org/ghc/docs/latest/html/libraries/unix-2.2.0.0/System-Posix-...
Good luck!
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