xref: /freebsd/contrib/openpam/doc/man/openpam_nullconv.3 (revision ca236e63dd69b7ee0460d063ae47d0f870cd17e2)

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.\" Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
.\" ("CBOSS"), as part of the DARPA CHATS research program.
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.Dd July 15, 2003
.Dt OPENPAM_NULLCONV 3
.Os
.Sh NAME
.Nm openpam_nullconv
.Nd null conversation function
.Sh LIBRARY
.Lb libpam
.Sh SYNOPSIS
.In sys/types.h
.In security/pam_appl.h
.In security/openpam.h
.Ft "int"
.Fn openpam_nullconv "int n" "const struct pam_message **msg" "struct pam_response **resp" "void *data"
.Sh DESCRIPTION
The
.Nm
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
.Dv PAM_AUTHTOK
to
whatever authentication token they've obtained on their own before
calling
.Xr pam_authenticate 3
and / or
.Xr pam_chauthtok 3 ,
and their PAM
configuration should specify the
.Dv use_first_pass
option for all modules
that require access to the authentication token, to make sure they use
.Dv PAM_AUTHTOK
rather than try to query the user.
.Pp
.Sh RETURN VALUES
The
.Nm
function returns one of the following values:
.Bl -tag -width 18n
.It Bq Er PAM_CONV_ERR
Conversation failure.
.El
.Sh SEE ALSO
.Xr openpam_ttyconv 3 ,
.Xr pam 3 ,
.Xr pam_authenticate 3 ,
.Xr pam_chauthtok 3 ,
.Xr pam_prompt 3 ,
.Xr pam_set_item 3 ,
.Xr pam_strerror 3 ,
.Xr pam_vprompt 3
.Sh STANDARDS
The
.Nm
function is an OpenPAM extension.
.Sh AUTHORS
The
.Nm
function and this manual page were developed for the
.Fx
Project by ThinkSec AS and Network Associates Laboratories, the
Security Research Division of Network Associates, Inc.  under
DARPA/SPAWAR contract N66001-01-C-8035
.Pq Dq CBOSS ,
as part of the DARPA CHATS research program.