pam_get_item() problems

[Jason DiCioccio]

Greetings!

On Wed, 17 Nov 2004 08:43:47 -0700, Jason Gerfen
<jason.gerfen at scl.utah.edu> wrote:
> I am looking for assistance using the pam_get_item() function.
> According to the pam module writters guide on kernel.org I should use
> pam_get_item() as the following:
> 
> extern int pam_get_item( const pam_handle_t *pamh,
>                                               int item_type,
>                                               const void **item );
> 
> As you can see in the code below it should retrieve the password entered
> during login and store it in the const void **password variable.  But
> what happens is it completely crashes the display manager.  I don't get
> it, I have looked at other people's source (pam_krb5afs.c for example)
> and they are calling the pam_get_item() function in much the same way
> and yet it isn't crashing their display.  Am I missing something or over
> looking a compile option perhaps?  Any help is greatly appreciated.

You need to use a conversation function first.  Take a look at some of
the code you  were looking at before and look for where they call
theri conversation functions.  You need to initiate a 'conversation'
with the calling program in order to receive the auth token.  You then
use pam_set_item to set PAM_AUTHTOK.

I hope this made sense.  I ran into this same issue before and it was
driving me nuts :)

Regards,
-JD-