freebsd-nq/doc/man/openpam_nullconv.3

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.\"-
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.\" Copyright (c) 2001-2003 Networks Associates Technology, Inc.
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.\" Copyright (c) 2004-2007 Dag-Erling Smørgrav
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.\" All rights reserved.
.\"
.\" This software was developed for the FreeBSD Project by ThinkSec AS and
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.\" 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.
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.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. The name of the author may not be used to endorse or promote
.\" products derived from this software without specific prior written
.\" permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" $P4$
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.\"
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.Dd December 21, 2007
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.Dt OPENPAM_NULLCONV 3
.Os
.Sh NAME
.Nm openpam_nullconv
.Nd null conversation function
.Sh LIBRARY
.Lb libpam
.Sh SYNOPSIS
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.In sys/types.h
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.In security/pam_appl.h
.In security/openpam.h
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.Ft "int"
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.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
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dialog with the user.
Such applications should set
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.Dv PAM_AUTHTOK
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to whatever authentication
token they've obtained on their own before calling
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.Xr pam_authenticate 3
and / or
.Xr pam_chauthtok 3 ,
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and their PAM configuration should specify the
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.Dv use_first_pass
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option for all modules that require access to the
authentication token, to make sure they use
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.Dv PAM_AUTHTOK
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rather than
try to query the user.
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.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 ,
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.Xr pam_authenticate 3 ,
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.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
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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
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DARPA/SPAWAR contract N66001-01-C-8035
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.Pq Dq CBOSS ,
as part of the DARPA CHATS research program.