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shadow/src/chage.c

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/*
* Copyright (c) 1989 - 1994, Julianne Frances Haugh
* Copyright (c) 1996 - 2000, Marek Michałkiewicz
* Copyright (c) 2000 - 2006, Tomasz Kłoczko
* Copyright (c) 2007 - 2011, Nicolas François
* All rights reserved.
*
* 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 copyright holders or contributors may not be used to
* endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* HOLDERS 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 LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#ident "$Id$"
#include <ctype.h>
#include <fcntl.h>
#include <getopt.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <time.h>
#ifdef ACCT_TOOLS_SETUID
#ifdef USE_PAM
#include "pam_defs.h"
#endif /* USE_PAM */
#endif /* ACCT_TOOLS_SETUID */
#include <pwd.h>
#ifdef WITH_SELINUX
#include <selinux/selinux.h>
#include <selinux/av_permissions.h>
#endif
#include "prototypes.h"
#include "defines.h"
#include "pwio.h"
#include "shadowio.h"
#ifdef WITH_TCB
#include "tcbfuncs.h"
#endif
/*@-exitarg@*/
#include "exitcodes.h"
/*
* Global variables
*/
const char *Prog;
static bool
dflg = false, /* set last password change date */
Eflg = false, /* set account expiration date */
Iflg = false, /* set password inactive after expiration */
lflg = false, /* show account aging information */
mflg = false, /* set minimum number of days before password change */
Mflg = false, /* set maximum number of days before password change */
Wflg = false; /* set expiration warning days */
static bool amroot = false;
static bool pw_locked = false; /* Indicate if the password file is locked */
static bool spw_locked = false; /* Indicate if the shadow file is locked */
/* The name and UID of the user being worked on */
static char user_name[BUFSIZ] = "";
static uid_t user_uid = -1;
static long mindays;
static long maxdays;
static long lstchgdate;
static long warndays;
static long inactdays;
static long expdate;
/* local function prototypes */
static /*@noreturn@*/void usage (int status);
static void date_to_str (char *buf, size_t maxsize, time_t date);
static int new_fields (void);
static void print_date (time_t date);
static void list_fields (void);
static void process_flags (int argc, char **argv);
static void check_flags (int argc, int opt_index);
static void check_perms (void);
static void open_files (bool readonly);
static void close_files (void);
static /*@noreturn@*/void fail_exit (int code);
/*
* fail_exit - do some cleanup and exit with the given error code
*/
static /*@noreturn@*/void fail_exit (int code)
{
if (spw_locked) {
if (spw_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
/* continue */
}
}
if (pw_locked) {
if (pw_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
/* continue */
}
}
closelog ();
#ifdef WITH_AUDIT
if (E_SUCCESS != code) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change age",
user_name, (unsigned int) user_uid, 0);
}
#endif
exit (code);
}
/*
* usage - print command line syntax and exit
*/
static /*@noreturn@*/void usage (int status)
{
FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
(void) fprintf (usageout,
_("Usage: %s [options] LOGIN\n"
"\n"
"Options:\n"),
Prog);
(void) fputs (_(" -d, --lastday LAST_DAY set date of last password change to LAST_DAY\n"), usageout);
(void) fputs (_(" -E, --expiredate EXPIRE_DATE set account expiration date to EXPIRE_DATE\n"), usageout);
(void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
(void) fputs (_(" -I, --inactive INACTIVE set password inactive after expiration\n"
" to INACTIVE\n"), usageout);
(void) fputs (_(" -l, --list show account aging information\n"), usageout);
(void) fputs (_(" -m, --mindays MIN_DAYS set minimum number of days before password\n"
" change to MIN_DAYS\n"), usageout);
(void) fputs (_(" -M, --maxdays MAX_DAYS set maximim number of days before password\n"
" change to MAX_DAYS\n"), usageout);
(void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
(void) fputs (_(" -W, --warndays WARN_DAYS set expiration warning days to WARN_DAYS\n"), usageout);
(void) fputs ("\n", usageout);
exit (status);
}
static void date_to_str (char *buf, size_t maxsize, time_t date)
{
struct tm *tp;
tp = gmtime (&date);
#ifdef HAVE_STRFTIME
(void) strftime (buf, maxsize, "%Y-%m-%d", tp);
#else
(void) snprintf (buf, maxsize, "%04d-%02d-%02d",
tp->tm_year + 1900, tp->tm_mon + 1, tp->tm_mday);
#endif /* HAVE_STRFTIME */
}
/*
* new_fields - change the user's password aging information interactively.
*
* prompt the user for all of the password age values. set the fields
* from the user's response, or leave alone if nothing was entered. The
* value (-1) is used to indicate the field should be removed if possible.
* any other negative value is an error. very large positive values will
* be handled elsewhere.
*/
static int new_fields (void)
{
char buf[200];
(void) puts (_("Enter the new value, or press ENTER for the default"));
(void) puts ("");
(void) snprintf (buf, sizeof buf, "%ld", mindays);
change_field (buf, sizeof buf, _("Minimum Password Age"));
if ( (getlong (buf, &mindays) == 0)
|| (mindays < -1)) {
return 0;
}
(void) snprintf (buf, sizeof buf, "%ld", maxdays);
change_field (buf, sizeof buf, _("Maximum Password Age"));
if ( (getlong (buf, &maxdays) == 0)
|| (maxdays < -1)) {
return 0;
}
if (-1 == lstchgdate) {
strcpy (buf, "-1");
} else {
date_to_str (buf, sizeof buf, (time_t) lstchgdate * SCALE);
}
change_field (buf, sizeof buf, _("Last Password Change (YYYY-MM-DD)"));
if (strcmp (buf, "-1") == 0) {
lstchgdate = -1;
} else {
lstchgdate = strtoday (buf);
if (lstchgdate <= -1) {
return 0;
}
}
(void) snprintf (buf, sizeof buf, "%ld", warndays);
change_field (buf, sizeof buf, _("Password Expiration Warning"));
if ( (getlong (buf, &warndays) == 0)
|| (warndays < -1)) {
return 0;
}
(void) snprintf (buf, sizeof buf, "%ld", inactdays);
change_field (buf, sizeof buf, _("Password Inactive"));
if ( (getlong (buf, &inactdays) == 0)
|| (inactdays < -1)) {
return 0;
}
if (-1 == expdate) {
strcpy (buf, "-1");
} else {
date_to_str (buf, sizeof buf, (time_t) expdate * SCALE);
}
change_field (buf, sizeof buf,
_("Account Expiration Date (YYYY-MM-DD)"));
if (strcmp (buf, "-1") == 0) {
expdate = -1;
} else {
expdate = strtoday (buf);
if (expdate <= -1) {
return 0;
}
}
return 1;
}
static void print_date (time_t date)
{
#ifdef HAVE_STRFTIME
struct tm *tp;
char buf[80];
tp = gmtime (&date);
if (NULL == tp) {
(void) printf ("time_t: %lu\n", (unsigned long)date);
} else {
(void) strftime (buf, sizeof buf, "%b %d, %Y", tp);
(void) puts (buf);
}
#else
struct tm *tp;
char *cp = NULL;
tp = gmtime (&date);
if (NULL != tp) {
cp = asctime (tp);
}
if (NULL != cp) {
(void) printf ("%6.6s, %4.4s\n", cp + 4, cp + 20);
} else {
(void) printf ("time_t: %lu\n", date);
}
#endif
}
/*
* list_fields - display the current values of the expiration fields
*
* display the password age information from the password fields. Date
* values will be displayed as a calendar date, or the word "never" if
* the date is 1/1/70, which is day number 0.
*/
static void list_fields (void)
{
long changed = 0;
long expires;
/*
* The "last change" date is either "never" or the date the password
* was last modified. The date is the number of days since 1/1/1970.
*/
(void) fputs (_("Last password change\t\t\t\t\t: "), stdout);
if (lstchgdate < 0) {
(void) puts (_("never"));
} else if (lstchgdate == 0) {
(void) puts (_("password must be changed"));
} else {
changed = lstchgdate * SCALE;
print_date ((time_t) changed);
}
/*
* The password expiration date is determined from the last change
* date plus the number of days the password is valid for.
*/
(void) fputs (_("Password expires\t\t\t\t\t: "), stdout);
if (lstchgdate == 0) {
(void) puts (_("password must be changed"));
} else if ( (lstchgdate < 0)
|| (maxdays >= (10000 * (DAY / SCALE)))
|| (maxdays < 0)) {
(void) puts (_("never"));
} else {
expires = changed + maxdays * SCALE;
print_date ((time_t) expires);
}
/*
* The account becomes inactive if the password is expired for more
* than "inactdays". The expiration date is calculated and the
* number of inactive days is added. The resulting date is when the
* active will be disabled.
*/
(void) fputs (_("Password inactive\t\t\t\t\t: "), stdout);
if (lstchgdate == 0) {
(void) puts (_("password must be changed"));
} else if ( (lstchgdate < 0)
|| (inactdays < 0)
|| (maxdays >= (10000 * (DAY / SCALE)))
|| (maxdays < 0)) {
(void) puts (_("never"));
} else {
expires = changed + (maxdays + inactdays) * SCALE;
print_date ((time_t) expires);
}
/*
* The account will expire on the given date regardless of the
* password expiring or not.
*/
(void) fputs (_("Account expires\t\t\t\t\t\t: "), stdout);
if (expdate < 0) {
(void) puts (_("never"));
} else {
expires = expdate * SCALE;
print_date ((time_t) expires);
}
/*
* Start with the easy numbers - the number of days before the
* password can be changed, the number of days after which the
* password must be chaged, the number of days before the password
* expires that the user is told, and the number of days after the
* password expires that the account becomes unusable.
*/
printf (_("Minimum number of days between password change\t\t: %ld\n"),
mindays);
printf (_("Maximum number of days between password change\t\t: %ld\n"),
maxdays);
printf (_("Number of days of warning before password expires\t: %ld\n"),
warndays);
}
/*
* process_flags - parse the command line options
*
* It will not return if an error is encountered.
*/
static void process_flags (int argc, char **argv)
{
/*
* Parse the command line options.
*/
int c;
static struct option long_options[] = {
{"lastday", required_argument, NULL, 'd'},
{"expiredate", required_argument, NULL, 'E'},
{"help", no_argument, NULL, 'h'},
{"inactive", required_argument, NULL, 'I'},
{"list", no_argument, NULL, 'l'},
{"mindays", required_argument, NULL, 'm'},
{"maxdays", required_argument, NULL, 'M'},
{"root", required_argument, NULL, 'R'},
{"warndays", required_argument, NULL, 'W'},
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv, "d:E:hI:lm:M:R:W:",
long_options, NULL)) != -1) {
switch (c) {
case 'd':
dflg = true;
lstchgdate = strtoday (optarg);
if (lstchgdate < -1) {
fprintf (stderr,
_("%s: invalid date '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
case 'E':
Eflg = true;
expdate = strtoday (optarg);
if (expdate < -1) {
fprintf (stderr,
_("%s: invalid date '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
case 'h':
usage (E_SUCCESS);
/*@notreached@*/break;
case 'I':
Iflg = true;
if ( (getlong (optarg, &inactdays) == 0)
|| (inactdays < -1)) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
case 'l':
lflg = true;
break;
case 'm':
mflg = true;
if ( (getlong (optarg, &mindays) == 0)
|| (mindays < -1)) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
case 'M':
Mflg = true;
if ( (getlong (optarg, &maxdays) == 0)
|| (maxdays < -1)) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
case 'R': /* no-op, handled in process_root_flag () */
break;
case 'W':
Wflg = true;
if ( (getlong (optarg, &warndays) == 0)
|| (warndays < -1)) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
default:
usage (E_USAGE);
}
}
check_flags (argc, optind);
}
/*
* check_flags - check flags and parameters consistency
*
* It will not return if an error is encountered.
*/
static void check_flags (int argc, int opt_index)
{
/*
* Make certain the flags do not conflict and that there is a user
* name on the command line.
*/
if (argc != opt_index + 1) {
usage (E_USAGE);
}
if (lflg && (mflg || Mflg || dflg || Wflg || Iflg || Eflg)) {
fprintf (stderr,
_("%s: do not include \"l\" with other flags\n"),
Prog);
usage (E_USAGE);
}
}
/*
* check_perms - check if the caller is allowed to add a group
*
* Non-root users are only allowed to display their aging information.
* (we will later make sure that the user is only listing her aging
* information)
*
* With PAM support, the setuid bit can be set on chage to allow
* non-root users to groups.
* Without PAM support, only users who can write in the group databases
* can add groups.
*
* It will not return if the user is not allowed.
*/
static void check_perms (void)
{
#ifdef ACCT_TOOLS_SETUID
#ifdef USE_PAM
pam_handle_t *pamh = NULL;
struct passwd *pampw;
int retval;
#endif /* USE_PAM */
#endif /* ACCT_TOOLS_SETUID */
/*
* An unprivileged user can ask for their own aging information, but
* only root can change it, or list another user's aging
* information.
*/
if (!amroot && !lflg) {
fprintf (stderr, _("%s: Permission denied.\n"), Prog);
fail_exit (E_NOPERM);
}
#ifdef ACCT_TOOLS_SETUID
#ifdef USE_PAM
pampw = getpwuid (getuid ()); /* local, no need for xgetpwuid */
if (NULL == pampw) {
fprintf (stderr,
_("%s: Cannot determine your user name.\n"),
Prog);
exit (E_NOPERM);
}
retval = pam_start ("chage", pampw->pw_name, &conv, &pamh);
if (PAM_SUCCESS == retval) {
retval = pam_authenticate (pamh, 0);
}
if (PAM_SUCCESS == retval) {
retval = pam_acct_mgmt (pamh, 0);
}
if (PAM_SUCCESS != retval) {
fprintf (stderr, _("%s: PAM: %s\n"),
Prog, pam_strerror (pamh, retval));
SYSLOG((LOG_ERR, "%s", pam_strerror (pamh, retval)));
if (NULL != pamh) {
(void) pam_end (pamh, retval);
}
fail_exit (E_NOPERM);
}
(void) pam_end (pamh, retval);
#endif /* USE_PAM */
#endif /* ACCT_TOOLS_SETUID */
}
/*
* open_files - open the shadow database
*
* In read-only mode, the databases are not locked and are opened
* only for reading.
*/
static void open_files (bool readonly)
{
/*
* Lock and open the password file. This loads all of the password
* file entries into memory. Then we get a pointer to the password
* file entry for the requested user.
*/
if (!readonly) {
if (pw_lock () == 0) {
fprintf (stderr,
_("%s: cannot lock %s; try again later.\n"),
Prog, pw_dbname ());
fail_exit (E_NOPERM);
}
pw_locked = true;
}
if (pw_open (readonly ? O_RDONLY: O_RDWR) == 0) {
fprintf (stderr, _("%s: cannot open %s\n"), Prog, pw_dbname ());
SYSLOG ((LOG_WARN, "cannot open %s", pw_dbname ()));
fail_exit (E_NOPERM);
}
/*
* For shadow password files we have to lock the file and read in
* the entries as was done for the password file. The user entries
* does not have to exist in this case; a new entry will be created
* for this user if one does not exist already.
*/
if (!readonly) {
if (spw_lock () == 0) {
fprintf (stderr,
_("%s: cannot lock %s; try again later.\n"),
Prog, spw_dbname ());
fail_exit (E_NOPERM);
}
spw_locked = true;
}
if (spw_open (readonly ? O_RDONLY: O_RDWR) == 0) {
fprintf (stderr,
_("%s: cannot open %s\n"), Prog, spw_dbname ());
SYSLOG ((LOG_WARN, "cannot open %s", spw_dbname ()));
fail_exit (E_NOPERM);
}
}
/*
* close_files - close and unlock the password/shadow databases
*/
static void close_files (void)
{
/*
* Now close the shadow password file, which will cause all of the
* entries to be re-written.
*/
if (spw_close () == 0) {
fprintf (stderr,
_("%s: failure while writing changes to %s\n"), Prog, spw_dbname ());
SYSLOG ((LOG_ERR, "failure while writing changes to %s", spw_dbname ()));
fail_exit (E_NOPERM);
}
/*
* Close the password file. If any entries were modified, the file
* will be re-written.
*/
if (pw_close () == 0) {
fprintf (stderr, _("%s: failure while writing changes to %s\n"), Prog, pw_dbname ());
SYSLOG ((LOG_ERR, "failure while writing changes to %s", pw_dbname ()));
fail_exit (E_NOPERM);
}
if (spw_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
/* continue */
}
spw_locked = false;
if (pw_unlock () == 0) {
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
/* continue */
}
pw_locked = false;
}
/*
* update_age - update the aging information in the database
*
* It will not return in case of error
*/
static void update_age (/*@null@*/const struct spwd *sp,
/*@notnull@*/const struct passwd *pw)
{
struct spwd spwent;
/*
* There was no shadow entry. The new entry will have the encrypted
* password transferred from the normal password file along with the
* aging information.
*/
if (NULL == sp) {
struct passwd pwent = *pw;
memzero (&spwent, sizeof spwent);
spwent.sp_namp = xstrdup (pwent.pw_name);
spwent.sp_pwdp = xstrdup (pwent.pw_passwd);
spwent.sp_flag = SHADOW_SP_FLAG_UNSET;
pwent.pw_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
if (pw_update (&pwent) == 0) {
fprintf (stderr,
_("%s: failed to prepare the new %s entry '%s'\n"), Prog, pw_dbname (), pwent.pw_name);
fail_exit (E_NOPERM);
}
} else {
spwent.sp_namp = xstrdup (sp->sp_namp);
spwent.sp_pwdp = xstrdup (sp->sp_pwdp);
spwent.sp_flag = sp->sp_flag;
}
/*
* Copy the fields back to the shadow file entry and write the
* modified entry back to the shadow file. Closing the shadow and
* password files will commit any changes that have been made.
*/
spwent.sp_max = maxdays;
spwent.sp_min = mindays;
spwent.sp_lstchg = lstchgdate;
spwent.sp_warn = warndays;
spwent.sp_inact = inactdays;
spwent.sp_expire = expdate;
if (spw_update (&spwent) == 0) {
fprintf (stderr,
_("%s: failed to prepare the new %s entry '%s'\n"), Prog, spw_dbname (), spwent.sp_namp);
fail_exit (E_NOPERM);
}
}
/*
* get_defaults - get the value of the fields not set from the command line
*/
static void get_defaults (/*@null@*/const struct spwd *sp)
{
/*
* Set the fields that aren't being set from the command line from
* the password file.
*/
if (NULL != sp) {
if (!Mflg) {
maxdays = sp->sp_max;
}
if (!mflg) {
mindays = sp->sp_min;
}
if (!dflg) {
lstchgdate = sp->sp_lstchg;
}
if (!Wflg) {
warndays = sp->sp_warn;
}
if (!Iflg) {
inactdays = sp->sp_inact;
}
if (!Eflg) {
expdate = sp->sp_expire;
}
} else {
/*
* Use default values that will not change the behavior of the
* account.
*/
if (!Mflg) {
maxdays = -1;
}
if (!mflg) {
mindays = -1;
}
if (!dflg) {
lstchgdate = -1;
}
if (!Wflg) {
warndays = -1;
}
if (!Iflg) {
inactdays = -1;
}
if (!Eflg) {
expdate = -1;
}
}
}
/*
* chage - change a user's password aging information
*
* This command controls the password aging information.
*
* The valid options are
*
* -d set last password change date (*)
* -E set account expiration date (*)
* -I set password inactive after expiration (*)
* -l show account aging information
* -M set maximim number of days before password change (*)
* -m set minimum number of days before password change (*)
* -W set expiration warning days (*)
*
* (*) requires root permission to execute.
*
* All of the time fields are entered in the internal format which is
* either seconds or days.
*/
int main (int argc, char **argv)
{
const struct spwd *sp;
uid_t ruid;
gid_t rgid;
const struct passwd *pw;
/*
* Get the program name so that error messages can use it.
*/
Prog = Basename (argv[0]);
sanitize_env ();
(void) setlocale (LC_ALL, "");
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
process_root_flag ("-R", argc, argv);
#ifdef WITH_AUDIT
audit_help_open ();
#endif
OPENLOG ("chage");
ruid = getuid ();
rgid = getgid ();
amroot = (ruid == 0);
#ifdef WITH_SELINUX
if (amroot && (is_selinux_enabled () > 0)) {
amroot = (selinux_check_passwd_access (PASSWD__ROOTOK) == 0);
}
#endif
process_flags (argc, argv);
check_perms ();
if (!spw_file_present ()) {
fprintf (stderr,
_("%s: the shadow password file is not present\n"),
Prog);
SYSLOG ((LOG_WARN, "can't find the shadow password file"));
closelog ();
exit (E_SHADOW_NOTFOUND);
}
open_files (lflg);
/* Drop privileges */
if (lflg && ( (setregid (rgid, rgid) != 0)
|| (setreuid (ruid, ruid) != 0))) {
fprintf (stderr, _("%s: failed to drop privileges (%s)\n"),
Prog, strerror (errno));
fail_exit (E_NOPERM);
}
pw = pw_locate (argv[optind]);
if (NULL == pw) {
fprintf (stderr, _("%s: user '%s' does not exist in %s\n"),
Prog, argv[optind], pw_dbname ());
closelog ();
fail_exit (E_NOPERM);
}
STRFCPY (user_name, pw->pw_name);
#ifdef WITH_TCB
if (shadowtcb_set_user (pw->pw_name) == SHADOWTCB_FAILURE) {
fail_exit (E_NOPERM);
}
#endif
user_uid = pw->pw_uid;
sp = spw_locate (argv[optind]);
get_defaults (sp);
/*
* Print out the expiration fields if the user has requested the
* list option.
*/
if (lflg) {
if (!amroot && (ruid != user_uid)) {
fprintf (stderr, _("%s: Permission denied.\n"), Prog);
fail_exit (E_NOPERM);
}
#ifdef WITH_AUDIT
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"display aging info",
user_name, (unsigned int) user_uid, 1);
#endif
list_fields ();
fail_exit (E_SUCCESS);
}
/*
* If none of the fields were changed from the command line, let the
* user interactively change them.
*/
if (!mflg && !Mflg && !dflg && !Wflg && !Iflg && !Eflg) {
printf (_("Changing the aging information for %s\n"),
user_name);
if (new_fields () == 0) {
fprintf (stderr, _("%s: error changing fields\n"),
Prog);
fail_exit (E_NOPERM);
}
#ifdef WITH_AUDIT
else {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change all aging information",
user_name, (unsigned int) user_uid, 1);
}
#endif
} else {
#ifdef WITH_AUDIT
if (Mflg) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change max age",
user_name, (unsigned int) user_uid, 1);
}
if (mflg) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change min age",
user_name, (unsigned int) user_uid, 1);
}
if (dflg) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change last change date",
user_name, (unsigned int) user_uid, 1);
}
if (Wflg) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change passwd warning",
user_name, (unsigned int) user_uid, 1);
}
if (Iflg) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change inactive days",
user_name, (unsigned int) user_uid, 1);
}
if (Eflg) {
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"change passwd expiration",
user_name, (unsigned int) user_uid, 1);
}
#endif
}
update_age (sp, pw);
close_files ();
SYSLOG ((LOG_INFO, "changed password expiry for %s", user_name));
closelog ();
exit (E_SUCCESS);
}
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