151 lines
4.4 KiB
C
151 lines
4.4 KiB
C
/*
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* Copyright 1989 - 1994, Julianne Frances Haugh
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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. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* pwunconv - restore old password file from shadow password file.
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*
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* Pwunconv copies the password file information from the shadow
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* password file, merging entries from an optional existing shadow
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* file.
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*
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* The new password file is left in npasswd. There is no new
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* shadow file. Password aging information is translated where
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* possible.
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*/
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#include <config.h>
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#include "rcsid.h"
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RCSID("$Id: pwunconv-old.c,v 1.1 1997/05/01 23:11:59 marekm Exp $")
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#include "defines.h"
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#include <sys/types.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <pwd.h>
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#ifndef SHADOWPWD
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int
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main()
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{
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fprintf (stderr, "Shadow passwords are not configured.\n");
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exit (1);
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}
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#else /*{*/
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char buf[BUFSIZ];
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char *l64a ();
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int
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main()
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{
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struct passwd *pw;
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struct passwd *sgetpwent ();
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FILE *pwd;
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FILE *npwd;
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struct spwd *spwd;
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int fd;
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#ifdef ATT_AGE
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char newage[5];
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#endif
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if (! (pwd = fopen (PASSWD_FILE, "r"))) {
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perror (PASSWD_FILE);
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return (1);
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}
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unlink ("npasswd");
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if ((fd = open ("npasswd", O_WRONLY|O_CREAT|O_EXCL, 0600)) < 0 ||
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! (npwd = fdopen (fd, "w"))) {
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perror ("npasswd");
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return (1);
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}
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while (fgets (buf, sizeof buf, pwd) == buf) {
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buf[strlen (buf) - 1] = '\0'; /* remove '\n' character */
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if (buf[0] == '#') { /* comment line */
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(void) fprintf (npwd, "%s\n", buf);
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continue;
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}
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if (! (pw = sgetpwent (buf))) { /* copy bad lines verbatim */
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(void) fprintf (npwd, "%s\n", buf);
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continue;
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}
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setspent (); /* rewind shadow file */
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if (! (spwd = getspnam (pw->pw_name))) {
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(void) fprintf (npwd, "%s\n", buf);
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continue;
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}
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pw->pw_passwd = spwd->sp_pwdp;
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/*
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* Password aging works differently in the two different systems.
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* With shadow password files you apparently must have some aging
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* information. The maxweeks or minweeks may not map exactly.
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* In pwconv we set max == 10000, which is about 30 years. Here
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* we have to undo that kludge. So, if maxdays == 10000, no aging
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* information is put into the new file. Otherwise, the days are
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* converted to weeks and so on.
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*/
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#ifdef ATT_AGE
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if (spwd->sp_max > (63*WEEK/SCALE) && spwd->sp_max < 10000)
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spwd->sp_max = (63*WEEK/SCALE); /* 10000 is infinity */
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if (spwd->sp_min >= 0 && spwd->sp_min <= 63*7 &&
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spwd->sp_max >= 0 && spwd->sp_max <= 63*7) {
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if (spwd->sp_lstchg == -1)
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spwd->sp_lstchg = 0;
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spwd->sp_max /= WEEK/SCALE; /* turn it into weeks */
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spwd->sp_min /= WEEK/SCALE;
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spwd->sp_lstchg /= WEEK/SCALE;
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strncpy (newage, l64a (spwd->sp_lstchg * (64L*64L) +
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spwd->sp_min * (64L) + spwd->sp_max), 5);
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pw->pw_age = newage;
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} else
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pw->pw_age = "";
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#endif /* ATT_AGE */
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if (putpwent (pw, npwd)) {
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perror ("pwunconv: write error");
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exit (1);
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}
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}
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endspent ();
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if (ferror (npwd)) {
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perror ("pwunconv");
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(void) unlink ("npasswd");
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}
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(void) fclose (npwd);
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(void) fclose (pwd);
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return (0);
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}
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#endif
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