ee4e367ea8
src/newusers.c, src/pwconv.c, src/chpasswd.c, src/logoutd.c, src/chfn.c, src/groupmems.c, src/usermod.c, src/pwunconv.c, src/expiry.c, src/groupdel.c, src/chgpasswd.c, src/useradd.c, src/su.c, src/groupmod.c, src/passwd.c, src/pwck.c, src/groupadd.c, src/chage.c, src/login.c, src/grpconv.c, src/groups.c, src/grpunconv.c, src/chsh.c: Prog is now global (not static to the file) so that it can be used by the helper functions of libmisc. * lib/prototypes.h: Added extern char *Prog. * libmisc/find_new_gid.c, libmisc/find_new_uid.c: Indicate the program name with the warning.
269 lines
7.9 KiB
C
269 lines
7.9 KiB
C
/*
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2002 - 2006, Tomasz Kłoczko
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* pwconv - create or update /etc/shadow with information from
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* /etc/passwd.
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*
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* It is more like SysV pwconv, slightly different from the original Shadow
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* pwconv. Depends on "x" as password in /etc/passwd which means that the
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* password has already been moved to /etc/shadow. There is no need to move
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* /etc/npasswd to /etc/passwd, password files are updated using library
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* routines with proper locking.
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*
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* Can be used to update /etc/shadow after adding/deleting users by editing
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* /etc/passwd. There is no man page yet, but this program should be close
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* to pwconv(1M) on Solaris 2.x.
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*
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* Warning: make sure that all users have "x" as the password in /etc/passwd
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* before running this program for the first time on a system which already
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* has shadow passwords. Anything else (like "*" from old versions of the
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* shadow suite) will replace the user's encrypted password in /etc/shadow.
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*
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* Doesn't currently support pw_age information in /etc/passwd, and doesn't
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* support DBM files. Add it if you need it...
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*
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*/
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#include <config.h>
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#ident "$Id$"
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#include <errno.h>
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#include <fcntl.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "defines.h"
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#include "getdef.h"
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#include "prototypes.h"
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#include "pwio.h"
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#include "shadowio.h"
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#include "nscd.h"
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/*
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* exit status values
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*/
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#define E_SUCCESS 0 /* success */
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#define E_NOPERM 1 /* permission denied */
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#define E_USAGE 2 /* invalid command syntax */
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#define E_FAILURE 3 /* unexpected failure, nothing done */
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#define E_MISSING 4 /* unexpected failure, passwd file missing */
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#define E_PWDBUSY 5 /* passwd file(s) busy */
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#define E_BADENTRY 6 /* bad shadow entry */
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/*
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* Global variables
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*/
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char *Prog;
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static bool spw_locked = false;
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static bool pw_locked = false;
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/* local function prototypes */
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static void fail_exit (int status);
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static void fail_exit (int status)
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{
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if (pw_locked) {
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if (pw_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
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/* continue */
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}
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}
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if (spw_locked) {
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if (spw_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
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/* continue */
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}
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}
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exit (status);
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}
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int main (int argc, char **argv)
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{
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const struct passwd *pw;
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struct passwd pwent;
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const struct spwd *sp;
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struct spwd spent;
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if (1 != argc) {
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(void) fputs (_("Usage: pwconv\n"), stderr);
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}
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Prog = Basename (argv[0]);
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(void) setlocale (LC_ALL, "");
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(void) bindtextdomain (PACKAGE, LOCALEDIR);
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(void) textdomain (PACKAGE);
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OPENLOG ("pwconv");
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if (pw_lock () == 0) {
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fprintf (stderr,
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_("%s: cannot lock %s; try again later.\n"),
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Prog, pw_dbname ());
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fail_exit (E_PWDBUSY);
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}
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pw_locked = true;
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if (pw_open (O_RDWR) == 0) {
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fprintf (stderr,
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_("%s: cannot open %s\n"), Prog, pw_dbname ());
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fail_exit (E_MISSING);
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}
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if (spw_lock () == 0) {
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fprintf (stderr,
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_("%s: cannot lock %s; try again later.\n"),
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Prog, spw_dbname ());
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fail_exit (E_PWDBUSY);
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}
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spw_locked = true;
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if (spw_open (O_CREAT | O_RDWR) == 0) {
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fprintf (stderr,
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_("%s: cannot open %s\n"), Prog, spw_dbname ());
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fail_exit (E_FAILURE);
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}
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/*
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* Remove /etc/shadow entries for users not in /etc/passwd.
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*/
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spw_rewind ();
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while ((sp = spw_next ()) != NULL) {
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if (pw_locate (sp->sp_namp) != NULL) {
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continue;
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}
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if (spw_remove (sp->sp_namp) == 0) {
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/*
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* This shouldn't happen (the entry exists) but...
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*/
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fprintf (stderr,
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_("%s: cannot remove entry '%s' from %s\n"),
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Prog, sp->sp_namp, spw_dbname ());
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fail_exit (E_FAILURE);
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}
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}
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/*
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* Update shadow entries which don't have "x" as pw_passwd. Add any
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* missing shadow entries.
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*/
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pw_rewind ();
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while ((pw = pw_next ()) != NULL) {
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sp = spw_locate (pw->pw_name);
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if (NULL != sp) {
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/* do we need to update this entry? */
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if (strcmp (pw->pw_passwd, SHADOW_PASSWD_STRING) == 0) {
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continue;
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}
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/* update existing shadow entry */
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spent = *sp;
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} else {
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/* add new shadow entry */
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memset (&spent, 0, sizeof spent);
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spent.sp_namp = pw->pw_name;
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spent.sp_min = getdef_num ("PASS_MIN_DAYS", -1);
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spent.sp_max = getdef_num ("PASS_MAX_DAYS", -1);
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spent.sp_warn = getdef_num ("PASS_WARN_AGE", -1);
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spent.sp_inact = -1;
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spent.sp_expire = -1;
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spent.sp_flag = SHADOW_SP_FLAG_UNSET;
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}
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spent.sp_pwdp = pw->pw_passwd;
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spent.sp_lstchg = (long) time ((time_t *) 0) / SCALE;
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if (spw_update (&spent) == 0) {
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fprintf (stderr,
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_("%s: failed to prepare the new %s entry '%s'\n"),
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Prog, spw_dbname (), spent.sp_namp);
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fail_exit (E_FAILURE);
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}
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/* remove password from /etc/passwd */
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pwent = *pw;
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pwent.pw_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
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if (pw_update (&pwent) == 0) {
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fprintf (stderr,
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_("%s: failed to prepare the new %s entry '%s'\n"),
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Prog, pw_dbname (), pwent.pw_name);
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fail_exit (E_FAILURE);
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}
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}
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if (spw_close () == 0) {
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fprintf (stderr,
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_("%s: failure while writing changes to %s\n"),
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Prog, spw_dbname ());
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SYSLOG ((LOG_ERR, "failure while writing changes to %s", spw_dbname ()));
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fail_exit (E_FAILURE);
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}
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if (pw_close () == 0) {
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fprintf (stderr,
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_("%s: failure while writing changes to %s\n"),
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Prog, pw_dbname ());
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SYSLOG ((LOG_ERR, "failure while writing changes to %s", pw_dbname ()));
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fail_exit (E_FAILURE);
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}
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/* /etc/passwd- (backup file) */
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if (chmod (PASSWD_FILE "-", 0600) != 0) {
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fprintf (stderr,
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_("%s: failed to change the mode of %s to 0600\n"),
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Prog, PASSWD_FILE "-");
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SYSLOG ((LOG_ERR, "failed to change the mode of %s to 0600", PASSWD_FILE "-"));
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/* continue */
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}
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if (pw_locked) {
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if (pw_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
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/* continue */
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}
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}
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if (spw_locked) {
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if (spw_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
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/* continue */
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}
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}
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nscd_flush_cache ("passwd");
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exit (E_SUCCESS);
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}
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