Logo Search packages:      
Sourcecode: shadow version File versions

pwunconv.c

/*
 * 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>

#include "rcsid.h"
RCSID (PKG_VER "$Id: pwunconv.c 6 2005-03-20 15:34:28Z bubulle $")
#include "defines.h"
#include <sys/types.h>
#include <stdio.h>
#include <fcntl.h>
#include <pwd.h>
#include <unistd.h>
#include "prototypes.h"
#include "pwio.h"
#include "shadowio.h"
#ifndef     SHADOWPWD
int main (int argc, char **argv)
{
      setlocale (LC_ALL, "");
      bindtextdomain (PACKAGE, LOCALEDIR);
      textdomain (PACKAGE);

      fprintf (stderr, _("%s: Shadow passwords are not configured.\n"),
             argv[0]);
      exit (1);
}

#else                   /*{ */
char *l64a ();

static int shadow_locked = 0, passwd_locked = 0;

/* 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;

#ifdef      ATT_AGE
      char newage[5];
#endif
      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.
             */

#ifdef      ATT_AGE
            if (spwd->sp_max > (63 * WEEK / SCALE)
                && spwd->sp_max < 10000)
                  spwd->sp_max = (63 * WEEK / SCALE); /* 10000 is infinity */

            if (spwd->sp_min >= 0 && spwd->sp_min <= 63 * 7 &&
                spwd->sp_max >= 0 && spwd->sp_max <= 63 * 7) {
                  if (spwd->sp_lstchg == -1)
                        spwd->sp_lstchg = 0;

                  spwd->sp_max /= WEEK / SCALE; /* turn it into weeks */
                  spwd->sp_min /= WEEK / SCALE;
                  spwd->sp_lstchg /= WEEK / SCALE;

                  strncpy (newage,
                         l64a (spwd->sp_lstchg * (64L * 64L) +
                               spwd->sp_min * (64L) +
                               spwd->sp_max), 5);
                  pwent.pw_age = newage;
            } else
                  pwent.pw_age = "";
#endif                        /* ATT_AGE */
            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 ();
      return 0;
}
#endif

Generated by  Doxygen 1.6.0   Back to index