shadow/src/pwunconv.c

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/*
* Copyright 1989 - 1994, Julianne Frances Haugh
* 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. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH 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 JULIE HAUGH 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: pwunconv.c,v 1.21 2005/09/07 15:00:45 kloczek Exp $"
#include <fcntl.h>
#include <pwd.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include "defines.h"
#include "nscd.h"
#include "prototypes.h"
#include "pwio.h"
#include "shadowio.h"
/*
* Global variables
*/
static int shadow_locked = 0, passwd_locked = 0;
char *l64a ();
/* local function prototypes */
static void fail_exit (int);
static void fail_exit (int status)
{
if (shadow_locked)
spw_unlock ();
if (passwd_locked)
pw_unlock ();
exit (status);
}
int main (int argc, char **argv)
{
const struct passwd *pw;
struct passwd pwent;
const struct spwd *spwd;
char *Prog = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (!spw_file_present ())
/* shadow not installed, do nothing */
exit (0);
if (!pw_lock ()) {
fprintf (stderr, _("%s: can't lock passwd file\n"), Prog);
fail_exit (5);
}
passwd_locked++;
if (!pw_open (O_RDWR)) {
fprintf (stderr, _("%s: can't open passwd file\n"), Prog);
fail_exit (1);
}
if (!spw_lock ()) {
fprintf (stderr, _("%s: can't open shadow file\n"), Prog);
fail_exit (5);
}
shadow_locked++;
if (!spw_open (O_RDWR)) {
fprintf (stderr, _("%s: can't open shadow file\n"), Prog);
fail_exit (1);
}
pw_rewind ();
while ((pw = pw_next ())) {
if (!(spwd = spw_locate (pw->pw_name)))
continue;
pwent = *pw;
/*
* Update password if non-shadow is "x".
*/
if (strcmp (pw->pw_passwd, SHADOW_PASSWD_STRING) == 0)
pwent.pw_passwd = spwd->sp_pwdp;
/*
* Password aging works differently in the two different
* systems. With shadow password files you apparently must
* have some aging information. The maxweeks or minweeks
* may not map exactly. In pwconv we set max == 10000,
* which is about 30 years. Here we have to undo that
* kludge. So, if maxdays == 10000, no aging information is
* put into the new file. Otherwise, the days are converted
* to weeks and so on.
*/
if (!pw_update (&pwent)) {
fprintf (stderr,
_("%s: can't update entry for user %s\n"),
Prog, pwent.pw_name);
fail_exit (3);
}
}
if (!spw_close ()) {
fprintf (stderr,
_("%s: can't update shadow password file\n"), Prog);
fail_exit (3);
}
if (!pw_close ()) {
fprintf (stderr, _("%s: can't update password file\n"), Prog);
fail_exit (3);
}
if (unlink (SHADOW) != 0) {
fprintf (stderr,
_("%s: can't delete shadow password file\n"), Prog);
fail_exit (3);
}
spw_unlock ();
pw_unlock ();
nscd_flush_cache ("passwd");
return 0;
}