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[Caml-list] How to read a password without displaying it?
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| Date: | 2004-02-07 (16:31) |
| From: | David Brown <caml-list@d...> |
| Subject: | Re: [Caml-list] How to read a password without displaying it? |
On Sat, Feb 07, 2004 at 04:12:01PM +0100, David MENTRE wrote:
> open Unix
> [...]
> let read_password () =
> let term_init = tcgetattr stdin in
> let term_no_echo = { term_init with c_echo = false; } in
> tcsetattr stdin TCSANOW term_no_echo;
> let password = read_line () in
> tcsetattr stdin TCSAFLUSH term_init;
> password
The only suggestion would be to put the read_line in a try clause, and
restore the terminal settings if an exception is raised. Otherwise,
pressing ^C leaves the terminal with echo off.
Dave
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