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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2016 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <config.h>
#include <unistd.h>
#include <security/_pam_macros.h>
#include <security/pam_ext.h>
#include <security/pam_misc.h>
#include <security/pam_modules.h>
#include <security/pam_modutil.h>
#ifdef HAVE_KEYUTILS
#include <keyutils.h>
#endif
int
pam_sm_authenticate (pam_handle_t *pamh,
int flags,
int argc,
const char **argv)
{
#ifdef HAVE_KEYUTILS
int r;
void *cached_password = NULL;
key_serial_t serial;
serial = find_key_by_type_and_desc ("user", "cryptsetup", 0);
if (serial == 0)
return PAM_AUTHINFO_UNAVAIL;
r = keyctl_read_alloc (serial, &cached_password);
if (r < 0 || r != strlen (cached_password))
return PAM_AUTHINFO_UNAVAIL;
r = pam_set_item (pamh, PAM_AUTHTOK, cached_password);
free (cached_password);
if (r < 0)
return PAM_AUTH_ERR;
else
return PAM_SUCCESS;
#endif
return PAM_AUTHINFO_UNAVAIL;
}
int
pam_sm_setcred (pam_handle_t *pamh,
int flags,
int argc,
const char **argv)
{
return PAM_SUCCESS;
}
int
pam_sm_acct_mgmt (pam_handle_t *pamh,
int flags,
int argc,
const char **argv)
{
return PAM_SUCCESS;
}
int
pam_sm_chauthtok (pam_handle_t *pamh,
int flags,
int argc,
const char **argv)
{
return PAM_SUCCESS;
}
int
pam_sm_open_session (pam_handle_t *pamh,
int flags,
int argc,
const char **argv)
{
return PAM_SUCCESS;
}
int
pam_sm_close_session (pam_handle_t *pamh,
int flags,
int argc,
const char **argv)
{
return PAM_SUCCESS;
}
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