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134 lines
3.8 KiB
Groff
134 lines
3.8 KiB
Groff
.\"-
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.\" Copyright (c) 2001-2003 Networks Associates Technology, Inc.
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.\" All rights reserved.
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.\"
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.\" This software was developed for the FreeBSD Project by ThinkSec AS and
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.\" Network Associates Laboratories, the Security Research Division of
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.\" Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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.\" ("CBOSS"), as part of the DARPA CHATS research program.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $P4$
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.\"
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.Dd June 16, 2005
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.Dt PAM_GET_AUTHTOK 3
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.Os
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.Sh NAME
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.Nm pam_get_authtok
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.Nd retrieve authentication token
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.Sh LIBRARY
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.Lb libpam
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.Sh SYNOPSIS
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.In sys/types.h
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.In security/pam_appl.h
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.Ft "int"
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.Fn pam_get_authtok "pam_handle_t *pamh" "int item" "const char **authtok" "const char *prompt"
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.Sh DESCRIPTION
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The
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.Nm
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function returns the cached authentication token,
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or prompts the user if no token is currently cached.
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Either way, a pointer to the authentication token is stored in the
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location pointed to by the
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.Fa authtok
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argument.
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.Pp
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The
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.Fa item
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argument must have one of the following values:
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.Bl -tag -width 18n
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.It Dv PAM_AUTHTOK
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Returns the current authentication token, or the new token
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when changing authentication tokens.
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.It Dv PAM_OLDAUTHTOK
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Returns the previous authentication token when changing
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authentication tokens.
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.El
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.Pp
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The
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.Fa prompt
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argument specifies a prompt to use if no token is cached.
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If it is
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.Dv NULL ,
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the
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.Dv PAM_AUTHTOK_PROMPT
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or
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.Dv PAM_OLDAUTHTOK_PROMPT
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item,
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as appropriate, will be used.
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If that item is also
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.Dv NULL ,
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a hardcoded default prompt will be used.
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.Pp
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If
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.Fa item
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is set to
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.Dv PAM_AUTHTOK
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and there is a non-null
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.Dv PAM_OLDAUTHTOK
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item,
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.Nm
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will ask the user to confirm the new token by
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retyping it.
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If there is a mismatch,
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.Nm
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will return
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.Dv PAM_TRY_AGAIN .
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.Pp
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.Sh RETURN VALUES
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The
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.Nm
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function returns one of the following values:
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.Bl -tag -width 18n
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.It Bq Er PAM_BUF_ERR
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Memory buffer error.
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.It Bq Er PAM_CONV_ERR
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Conversation failure.
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.It Bq Er PAM_SYSTEM_ERR
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System error.
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.It Bq Er PAM_TRY_AGAIN
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Try again.
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.El
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.Sh SEE ALSO
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.Xr pam 3 ,
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.Xr pam_get_item 3 ,
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.Xr pam_get_user 3 ,
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.Xr pam_strerror 3
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.Sh STANDARDS
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The
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.Nm
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function is an OpenPAM extension.
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.Sh AUTHORS
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The
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.Nm
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function and this manual page were developed for the
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.Fx
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Project by ThinkSec AS and Network Associates Laboratories, the
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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 ,
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as part of the DARPA CHATS research program.
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