Re: Login application

From: Lew Pitcher (lpitcher_at_sympatico.ca)
Date: 05/27/04 

Date: Wed, 26 May 2004 21:05:39 -0400

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Otto Wyss wrote:
| I'm writing my own login application and have figured out how to
| retrieve the current login (getlogin) or the password file (getpwent)
| but I haven't found well the rest. ;-) Could anyone give me some hints
| for names I can look up?

You've almost got everything you need for classical passwords (/etc/passwd
passwords). You're missing crypt(3) and strcmp(3). See passwd(5) for some details.

The first two characters of the encrypted password (retrieved by getpwent()
are the crypt(3) 'salt' used to create the encrypted password.

Shadow passwords (/etc/shadow) are different. If the classical password is a
single byte string "x", then you'll want shadow(5) and getspent(3)

Finally, if you're using PAM, then I can't help you at all.

- --
Lew Pitcher

Master Codewright & JOAT-in-training | GPG public key available on request
Registered Linux User #112576 (http://counter.li.org/)
Slackware - Because I know what I'm doing.
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