ee43f47f45
passwd, shadow, group, gshadow etc. can be managed via nss - e.g. system default accounts can be specified using nss_altfiles, rather than in /etc/. Thus despite having default accounts, these files can be missing on disk and thus should be opened with O_CREATE whenever they are attempted to be opened in O_RDWR modes.
287 lines
7.7 KiB
C
287 lines
7.7 KiB
C
/*
|
|
* Copyright (c) 1996 - 2000, Marek Michałkiewicz
|
|
* Copyright (c) 2002 - 2006, Tomasz Kłoczko
|
|
* Copyright (c) 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.
|
|
*/
|
|
|
|
/*
|
|
* grpconv - create or update /etc/gshadow with information from
|
|
* /etc/group.
|
|
*
|
|
*/
|
|
|
|
#include <config.h>
|
|
#ident "$Id$"
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <grp.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <getopt.h>
|
|
#include "nscd.h"
|
|
#include "prototypes.h"
|
|
/*@-exitarg@*/
|
|
#include "exitcodes.h"
|
|
#ifdef SHADOWGRP
|
|
#include "groupio.h"
|
|
#include "sgroupio.h"
|
|
/*
|
|
* Global variables
|
|
*/
|
|
const char *Prog;
|
|
|
|
static bool gr_locked = false;
|
|
static bool sgr_locked = false;
|
|
|
|
/* local function prototypes */
|
|
static void fail_exit (int status);
|
|
static void usage (int status);
|
|
static void process_flags (int argc, char **argv);
|
|
|
|
static void fail_exit (int status)
|
|
{
|
|
if (gr_locked) {
|
|
if (gr_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, gr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", gr_dbname ()));
|
|
/* continue */
|
|
}
|
|
}
|
|
|
|
if (sgr_locked) {
|
|
if (sgr_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sgr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", sgr_dbname ()));
|
|
/* continue */
|
|
}
|
|
}
|
|
|
|
exit (status);
|
|
}
|
|
|
|
static void usage (int status)
|
|
{
|
|
FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
|
|
(void) fprintf (usageout,
|
|
_("Usage: %s [options]\n"
|
|
"\n"
|
|
"Options:\n"),
|
|
Prog);
|
|
(void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
|
|
(void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\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)
|
|
{
|
|
/*
|
|
* Parse the command line options.
|
|
*/
|
|
int c;
|
|
static struct option long_options[] = {
|
|
{"help", no_argument, NULL, 'h'},
|
|
{"root", required_argument, NULL, 'R'},
|
|
{NULL, 0, NULL, '\0'}
|
|
};
|
|
|
|
while ((c = getopt_long (argc, argv, "hR:",
|
|
long_options, NULL)) != -1) {
|
|
switch (c) {
|
|
case 'h':
|
|
usage (E_SUCCESS);
|
|
/*@notreached@*/break;
|
|
case 'R': /* no-op, handled in process_root_flag () */
|
|
break;
|
|
default:
|
|
usage (E_USAGE);
|
|
}
|
|
}
|
|
|
|
if (optind != argc) {
|
|
usage (E_USAGE);
|
|
}
|
|
}
|
|
|
|
int main (int argc, char **argv)
|
|
{
|
|
const struct group *gr;
|
|
struct group grent;
|
|
const struct sgrp *sg;
|
|
struct sgrp sgent;
|
|
|
|
Prog = Basename (argv[0]);
|
|
|
|
(void) setlocale (LC_ALL, "");
|
|
(void) bindtextdomain (PACKAGE, LOCALEDIR);
|
|
(void) textdomain (PACKAGE);
|
|
|
|
process_root_flag ("-R", argc, argv);
|
|
|
|
OPENLOG ("grpconv");
|
|
|
|
process_flags (argc, argv);
|
|
|
|
if (gr_lock () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot lock %s; try again later.\n"),
|
|
Prog, gr_dbname ());
|
|
fail_exit (5);
|
|
}
|
|
gr_locked = true;
|
|
if (gr_open (O_CREAT | O_RDWR) == 0) {
|
|
fprintf (stderr, _("%s: cannot open %s\n"), Prog, gr_dbname ());
|
|
fail_exit (1);
|
|
}
|
|
|
|
if (sgr_lock () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot lock %s; try again later.\n"),
|
|
Prog, sgr_dbname ());
|
|
fail_exit (5);
|
|
}
|
|
sgr_locked = true;
|
|
if (sgr_open (O_CREAT | O_RDWR) == 0) {
|
|
fprintf (stderr, _("%s: cannot open %s\n"), Prog, sgr_dbname ());
|
|
fail_exit (1);
|
|
}
|
|
|
|
/*
|
|
* Remove /etc/gshadow entries for groups not in /etc/group.
|
|
*/
|
|
(void) sgr_rewind ();
|
|
while ((sg = sgr_next ()) != NULL) {
|
|
if (gr_locate (sg->sg_name) != NULL) {
|
|
continue;
|
|
}
|
|
|
|
if (sgr_remove (sg->sg_name) == 0) {
|
|
/*
|
|
* This shouldn't happen (the entry exists) but...
|
|
*/
|
|
fprintf (stderr,
|
|
_("%s: cannot remove entry '%s' from %s\n"),
|
|
Prog, sg->sg_name, sgr_dbname ());
|
|
fail_exit (3);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update shadow group passwords if non-shadow password is not "x".
|
|
* Add any missing shadow group entries.
|
|
*/
|
|
(void) gr_rewind ();
|
|
while ((gr = gr_next ()) != NULL) {
|
|
sg = sgr_locate (gr->gr_name);
|
|
if (NULL != sg) {
|
|
/* update existing shadow group entry */
|
|
sgent = *sg;
|
|
if (strcmp (gr->gr_passwd, SHADOW_PASSWD_STRING) != 0)
|
|
sgent.sg_passwd = gr->gr_passwd;
|
|
} else {
|
|
static char *empty = 0;
|
|
|
|
/* add new shadow group entry */
|
|
memset (&sgent, 0, sizeof sgent);
|
|
sgent.sg_name = gr->gr_name;
|
|
sgent.sg_passwd = gr->gr_passwd;
|
|
sgent.sg_adm = ∅
|
|
}
|
|
/*
|
|
* XXX - sg_mem is redundant, it is currently always a copy
|
|
* of gr_mem. Very few programs actually use sg_mem, and all
|
|
* of them are in the shadow suite. Maybe this field could
|
|
* be used for something else? Any suggestions?
|
|
*/
|
|
sgent.sg_mem = gr->gr_mem;
|
|
|
|
if (sgr_update (&sgent) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: failed to prepare the new %s entry '%s'\n"),
|
|
Prog, sgr_dbname (), sgent.sg_name);
|
|
fail_exit (3);
|
|
}
|
|
/* remove password from /etc/group */
|
|
grent = *gr;
|
|
grent.gr_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
|
|
if (gr_update (&grent) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: failed to prepare the new %s entry '%s'\n"),
|
|
Prog, gr_dbname (), grent.gr_name);
|
|
fail_exit (3);
|
|
}
|
|
}
|
|
|
|
if (sgr_close () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: failure while writing changes to %s\n"),
|
|
Prog, sgr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failure while writing changes to %s", sgr_dbname ()));
|
|
fail_exit (3);
|
|
}
|
|
if (gr_close () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: failure while writing changes to %s\n"),
|
|
Prog, gr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failure while writing changes to %s", gr_dbname ()));
|
|
fail_exit (3);
|
|
}
|
|
if (sgr_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sgr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", sgr_dbname ()));
|
|
/* continue */
|
|
}
|
|
if (gr_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, gr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", gr_dbname ()));
|
|
/* continue */
|
|
}
|
|
|
|
nscd_flush_cache ("group");
|
|
|
|
return 0;
|
|
}
|
|
#else /* !SHADOWGRP */
|
|
int main (int unused(argc), char **argv)
|
|
{
|
|
fprintf (stderr,
|
|
"%s: not configured for shadow group support.\n", argv[0]);
|
|
exit (1);
|
|
}
|
|
#endif /* !SHADOWGRP */
|
|
|