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/*
* SPDX-FileCopyrightText: 1994 , Julianne Frances Haugh
* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
* SPDX-FileCopyrightText: 2001 - 2006, Tomasz Kłoczko
* SPDX-FileCopyrightText: 2007 - 2011, Nicolas François
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <config.h>
#ident "$Id$"
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <sys/types.h>
#include <getopt.h>
#include "defines.h"
#include "prototypes.h"
/*@-exitarg@*/
#include "exitcodes.h"
#include "shadowlog.h"
/* Global variables */
const char *Prog;
static bool cflg = false;
/* local function prototypes */
static void catch_signals (unused int sig);
static /*@noreturn@*/void usage (int status);
static void process_flags (int argc, char **argv);
/*
* catch_signals - signal catcher
*/
static void catch_signals (unused int sig)
{
_exit (10);
}
/*
* usage - print syntax message and exit
*/
static /*@noreturn@*/void usage (int status)
{
FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
(void) fprintf (usageout,
_("Usage: %s [options]\n"
"\n"
"Options:\n"),
Prog);
(void) fputs (_(" -c, --check check the user's password expiration\n"), usageout);
(void) fputs (_(" -f, --force force password change if the user's password\n"
" is expired\n"), usageout);
(void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
(void) fputs ("\n", usageout);
exit (status);
}
/*
* process_flags - parse the command line options
*
* It will not return if an error is encountered.
*/
static void process_flags (int argc, char **argv)
{
bool fflg = false;
int c;
static struct option long_options[] = {
{"check", no_argument, NULL, 'c'},
{"force", no_argument, NULL, 'f'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv, "cfh",
long_options, NULL)) != -1) {
switch (c) {
case 'c':
cflg = true;
break;
case 'f':
fflg = true;
break;
case 'h':
usage (E_SUCCESS);
/*@notreached@*/break;
default:
usage (E_USAGE);
}
}
if (! (cflg || fflg)) {
usage (E_USAGE);
}
if (cflg && fflg) {
fprintf (stderr,
_("%s: options %s and %s conflict\n"),
Prog, "-c", "-f");
usage (E_USAGE);
}
if (argc != optind) {
fprintf (stderr,
_("%s: unexpected argument: %s\n"),
Prog, argv[optind]);
usage (E_USAGE);
}
}
/*
* expiry - check and enforce password expiration policy
*
* expiry checks (-c) the current password expiration and forces (-f)
* changes when required. It is callable as a normal user command.
*/
int main (int argc, char **argv)
{
struct passwd *pwd;
struct spwd *spwd;
Prog = Basename (argv[0]);
log_set_progname(Prog);
log_set_logfd(stderr);
sanitize_env ();
/*
* Start by disabling all of the keyboard signals.
*/
(void) signal (SIGHUP, catch_signals);
(void) signal (SIGINT, catch_signals);
(void) signal (SIGQUIT, catch_signals);
#ifdef SIGTSTP
(void) signal (SIGTSTP, catch_signals);
#endif
/*
* expiry takes one of two arguments. The default action is to give
* the usage message.
*/
(void) setlocale (LC_ALL, "");
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
OPENLOG ("expiry");
process_flags (argc, argv);
/*
* Get user entries for /etc/passwd and /etc/shadow
*/
pwd = get_my_pwent ();
if (NULL == pwd) {
fprintf (stderr, _("%s: Cannot determine your user name.\n"),
Prog);
SYSLOG ((LOG_WARN, "Cannot determine the user name of the caller (UID %lu)",
(unsigned long) getuid ()));
exit (10);
}
spwd = getspnam (pwd->pw_name); /* !USE_PAM, No need for xgetspnam */
/*
* If checking accounts, use agecheck() function.
*/
if (cflg) {
/*
* Print out number of days until expiration.
*/
agecheck (spwd);
/*
* Exit with status indicating state of account.
*/
exit (isexpired (pwd, spwd));
}
/*
* Otherwise, force a password change with the expire() function.
* It will force the change or give a message indicating what to
* do.
* It won't return unless the account is unexpired.
*/
(void) expire (pwd, spwd);
return E_SUCCESS;
}
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