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OPENPAM_NULLCONV(3)      BSD Library Functions Manual      OPENPAM_NULLCONV(3)

NAME
     openpam_nullconv -- null conversation function

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

SYNOPSIS
     #include <sys/types.h>
     #include <security/pam_appl.h>
     #include <security/openpam.h>

     int
     openpam_nullconv(int n, const struct pam_message **msg, struct pam_response **resp, void *data);

DESCRIPTION
     The openpam_nullconv function is a null conversation function suitable for applications that want to
     use PAM but don't support interactive dialog with the user.  Such applications should set PAM_AUTHTOK
     to whatever authentication token they've obtained on their own before calling pam_authenticate(3) and /
     or pam_chauthtok(3), and their PAM configuration should specify the use_first_pass option for all mod-ules modules
     ules that require access to the authentication token, to make sure they use PAM_AUTHTOK rather than try
     to query the user.

RETURN VALUES
     The openpam_nullconv function returns one of the following values:

     [PAM_CONV_ERR]      Conversation failure.

SEE ALSO
     openpam_ttyconv(3), pam(3), pam_authenticate(3), pam_chauthtok(3), pam_prompt(3), pam_set_item(3),
     pam_strerror(3), pam_vprompt(3)

STANDARDS
     The openpam_nullconv function is an OpenPAM extension.

AUTHORS
     The openpam_nullconv function and this manual page were developed for the FreeBSD Project by ThinkSec
     AS and Network Associates Laboratories, the Security Research Division of Network Associates, Inc.
     under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program.

BSD                            December 21, 2007                           BSD