[plt-scheme] Password validation in the web-server on Windows

From: Jens Axel Søgaard (jensaxel at soegaard.net)
Date: Sun Oct 16 18:59:04 EDT 2005

Yoav Goldberg wrote:
> Look for advapi32.dll, you should have it on your machine.
> Here is some sample code:
> (require (lib "foreign.ss"))
> (unsafe!)
> (define advapi (ffi-lib "advapi32"))
> (define LogonUserA (get-ffi-obj "LogonUserA" advapi (_fun _string
> _string _string _int _int (_ptr o _int) -> _int)))
> (define check-login
>   (lambda (username domain pass)
>     (if
>         (= 0 (LogonUserA username domain pass 4 0)) ;;
>         #f
>         #t)))
> Note: as I said, I'm on a win2k machince, so it always fail here.
> It should work fine on WinXP - if it doesn't, maybe it's because
> _string is not the correct type to use - I don't know "foreign.ss"
> well enough. Also, keep in mind that this code doesn't close the
> returned handle, and on a real system you definately want to close
> that handle (using the CloseHandle API).

Thank you very much, I think it works.

I did have advapi32.dll - I guess Google Desktop doesn't index dll-files.

Jens Axel Søgaard

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