using "use_first_pass", but how?

[Tomas Mraz]

On Fri, 2005-10-07 at 16:39 +0200, ingo wrote:
> Hello everybody on this list! 
>  
> My problem: 
> I have to write a module, that needs the previously entered password. To 
> prevent a second prompting from the user for the password i would like to 
> implement the "use_first_pass" functionality provided by other modules (to 
> be able to stack the new module into the current setup). The current 
> problem right now is that i don't really know how to access these data 
> inside my custom module. 
> I read already the whole "module writers guide", but i didn't found any 
> hints to do this.  
> And next, as i've read the source for pam_unix and if i understood it 
> right, it is not storing the entered password, and therefor i can't use 
> this. 
> Maybe someone can help me or explain it to me. 

Read the pam_unix source - support.c function _unix_read_password(),
everything is there.

The token is stored in PAM_AUTHTOK or PAM_OLDAUTHTOK items depending on
if it's authentication or password phase and if it is the old or new
password.

-- 
Tomas Mraz <tmraz at redhat.com>