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/* Unix NT password database implementation, version 0.7.5.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/* indicate the following groups are defined */
#define PAM_SM_ACCT
#include "includes.h"
#ifndef LINUX
/* This is only used in the Sun implementation. */
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif
#endif /* LINUX */
#if defined(HAVE_SECURITY_PAM_MODULES_H)
#include <security/pam_modules.h>
#elif defined(HAVE_PAM_PAM_MODULES_H)
#include <pam/pam_modules.h>
#endif
#include "general.h"
#include "support.h"
/*
* pam_sm_acct_mgmt() verifies whether or not the account is disabled.
*
*/
int pam_sm_acct_mgmt( pam_handle_t *pamh, int flags,
int argc, const char **argv )
{
unsigned int ctrl;
int retval;
const char *name;
struct samu *sampass = NULL;
void (*oldsig_handler)(int);
TALLOC_CTX *frame = talloc_stackframe();
/* Samba initialization. */
load_case_tables_library();
ctrl = set_ctrl(pamh, flags, argc, argv );
/* get the username */
retval = pam_get_user( pamh, &name, "Username: " );
if (retval != PAM_SUCCESS) {
if (on( SMB_DEBUG, ctrl )) {
_log_err(pamh, LOG_DEBUG, "acct: could not identify user" );
}
TALLOC_FREE(frame);
return retval;
}
if (on( SMB_DEBUG, ctrl )) {
_log_err(pamh, LOG_DEBUG, "acct: username [%s] obtained", name );
}
if (geteuid() != 0) {
_log_err(pamh, LOG_DEBUG, "Cannot access samba password database, not running as root.");
TALLOC_FREE(frame);
return PAM_AUTHINFO_UNAVAIL;
}
/* Getting into places that might use LDAP -- protect the app
from a SIGPIPE it's not expecting */
oldsig_handler = CatchSignal(SIGPIPE, SIG_IGN);
if (!initialize_password_db(True, NULL)) {
_log_err(pamh, LOG_ALERT, "Cannot access samba password database" );
CatchSignal(SIGPIPE, oldsig_handler);
TALLOC_FREE(frame);
return PAM_AUTHINFO_UNAVAIL;
}
/* Get the user's record. */
if (!(sampass = samu_new( NULL ))) {
CatchSignal(SIGPIPE, oldsig_handler);
/* malloc fail. */
TALLOC_FREE(frame);
return nt_status_to_pam(NT_STATUS_NO_MEMORY);
}
if (!pdb_getsampwnam(sampass, name )) {
_log_err(pamh, LOG_DEBUG, "acct: could not identify user");
CatchSignal(SIGPIPE, oldsig_handler);
TALLOC_FREE(frame);
return PAM_USER_UNKNOWN;
}
/* check for lookup failure */
if (!strlen(pdb_get_username(sampass)) ) {
CatchSignal(SIGPIPE, oldsig_handler);
TALLOC_FREE(frame);
return PAM_USER_UNKNOWN;
}
if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
if (on( SMB_DEBUG, ctrl )) {
_log_err(pamh, LOG_DEBUG,
"acct: account %s is administratively disabled", name);
}
make_remark( pamh, ctrl, PAM_ERROR_MSG
, "Your account has been disabled; "
"please see your system administrator." );
CatchSignal(SIGPIPE, oldsig_handler);
TALLOC_FREE(frame);
return PAM_ACCT_EXPIRED;
}
/* TODO: support for expired passwords. */
CatchSignal(SIGPIPE, oldsig_handler);
TALLOC_FREE(frame);
return PAM_SUCCESS;
}
/* static module data */
#ifdef PAM_STATIC
struct pam_module _pam_smbpass_acct_modstruct = {
"pam_smbpass",
NULL,
NULL,
pam_sm_acct_mgmt,
NULL,
NULL,
NULL
};
#endif
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