.\" Copyright (c) 2001 Mark R V Murray
.\" All rights reserved.
.\" Copyright (c) 2002 Networks Associates Technology, Inc.
.\" All rights reserved.
.\"
.\" Portions of this software were developed for the FreeBSD Project by
.\" ThinkSec AS and NAI Labs, 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.
.\"
.\" 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
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.\"
.\" $FreeBSD: head/lib/libpam/modules/pam_opieaccess/pam_opieaccess.8 173003 2007-10-26 07:50:11Z des $
.\"
.Dd October 26, 2007
.Dt PAM_OPIEACCESS 8
.Os
.Sh NAME
.Nm pam_opieaccess
.Nd OPIEAccess PAM module
.Sh SYNOPSIS
.Op Ar service-name
.Ar module-type
.Ar control-flag
.Pa pam_opieaccess
.Op Ar options
.Sh DESCRIPTION
The
.Nm
module is used in conjunction with the
.Xr pam_opie 8
PAM module to ascertain that authentication can proceed by other means
(such as the
.Xr pam_unix 8
module) even if OPIE authentication failed.
To properly use this module,
.Xr pam_opie 8
should be marked
.Dq Li sufficient ,
and
.Nm
should be listed right below it and marked
.Dq Li requisite .
.Pp
The
.Nm
module provides functionality for only one PAM category:
authentication.
In terms of the
.Ar module-type
parameter, this is the
.Dq Li auth
feature.
It also provides null functions for the remaining module types.
.Ss OPIEAccess Authentication Module
The authentication component
.Pq Fn pam_sm_authenticate ,
returns
.Dv PAM_SUCCESS
in two cases:
.Bl -enum
.It
The user does not have OPIE enabled.
.It
The user has OPIE enabled, and the remote host is listed as a trusted
host in
.Pa /etc/opieaccess ,
and the user does not have a file named
.Pa \&.opiealways
in his home directory.
.El
.Pp
Otherwise, it returns
.Dv PAM_AUTH_ERR .
.Pp
The following options may be passed to the authentication module:
.Bl -tag -width ".Cm allow_local"
.It Cm allow_local
Normally, local logins are subjected to the same restrictions as
remote logins from
.Dq localhost .
This option causes
.Nm
to always allow local logins.
.It Cm debug
.Xr syslog 3
debugging information at
.Dv LOG_DEBUG
level.
.It Cm no_warn
suppress warning messages to the user.
These messages include reasons why the user's authentication attempt
was declined.
.El
.Sh FILES
.Bl -tag -width ".Pa $HOME/.opiealways"
.It Pa /etc/opieaccess
List of trusted hosts or networks.
See
.Xr opieaccess 5
for a description of its syntax.
.It Pa $HOME/.opiealways
The presence of this file makes OPIE mandatory for the user.
.El
.Sh SEE ALSO
.Xr opie 4 ,
.Xr opieaccess 5 ,
.Xr pam.conf 5 ,
.Xr pam 8 ,
.Xr pam_opie 8
.Sh AUTHORS
The
.Nm
module and this manual page were developed for the
.Fx
Project by
ThinkSec AS and NAI Labs, 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.