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Re: proftpd (was: Re: inetutils ftpd fcntl(F_SETOWN) failure message suppression patch)
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 22 Apr 2003 00:23:53 +0200
- Subject: Re: proftpd (was: Re: inetutils ftpd fcntl(F_SETOWN) failure message suppression patch)
- References: <20030103133222.GA1712@tishler.net> <20030107150428.A14974@cygbert.vinschen.de> <20030109164436.GA1064@tishler.net> <20030109164943.GA3100@redhat.com> <20030109182038.G21839@cygbert.vinschen.de> <20030113143459.GE1012@tishler.net> <176380637637.20030421225541@familiehaase.de>
- Reply-to: cygwin at cygwin dot com
On Mon, Apr 21, 2003 at 10:55:41PM +0200, Gerrit P. Haase wrote:
> Yes, I'm interested.
> It seems that there is a problem with the login.
> I could compile the current cvs source, the server runs, but ...
> I cannot login.
> [...]
> +#ifdef __CYGWIN__
> + /* We have to do special Windows NT voodoo with Cygwin in order to be
> + * able to switch UID/GID. More info at
> + * http://cygwin.com/cygwin-ug-net/ntsec.html#NTSEC-SETUID
> + */
> + if (is_winnt) {
> + HANDLE hToken = cygwin_logon_user(pw, pass);
> +
> + if (hToken == INVALID_HANDLE_VALUE)
> + goto auth_failure;
> + cygwin_set_impersonation_token(hToken);
> + }
> +#endif /* __CYGWIN__ */
> +
Actually I'm missing something like an `else' here. The authentication
on NT/2K/XP is done *instead* of making any authentication like calling
crypt() to verify the password or calling some PAM functions. You must
make sure that on NT/2K/XP that stuff doesn't get called. On 9x/Me
OTOH you still must use crypt() to verify the password. If you want to
see a really simple example, have a look into the login(1) source
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin at cygwin dot com
Red Hat, Inc.
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