usr.sbin/vipw/vipw.c

   1 /*
   2  * Copyright (c) 1987, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 2002 Networks Associates Technology, Inc.
   5  * All rights reserved.
   6  *
   7  * Portions of this software were developed for the FreeBSD Project by
   8  * ThinkSec AS and NAI Labs, the Security Research Division of Network
   9  * Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
  10  * ("CBOSS"), as part of the DARPA CHATS research program.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #if 0
  38 #ifndef lint
  39 static const char copyright[] =
  40 "@(#) Copyright (c) 1987, 1993, 1994\n\
  41         The Regents of the University of California.  All rights reserved.\n";
  42 #endif /* not lint */
  43
  44 #ifndef lint
  45 static char sccsid[] = "@(#)vipw.c      8.3 (Berkeley) 4/2/94";
  46 #endif /* not lint */
  47 #endif
  48 #include <sys/cdefs.h>
  49 __FBSDID("$FreeBSD$");
  50
  51 #include <sys/types.h>
  52 #include <sys/stat.h>
  53
  54 #include <err.h>
  55 #include <pwd.h>
  56 #include <stdio.h>
  57 #include <stdlib.h>
  58 #include <string.h>
  59 #include <unistd.h>
  60
  61 #include <libutil.h>            /* must be after pwd.h */
  62
  63 static void     usage(void);
  64
  65 int
  66 main(int argc, char *argv[])
  67 {
  68         const char *passwd_dir = NULL;
  69         int ch, pfd, tfd;
  70         char *line;
  71         size_t len;
  72
  73         while ((ch = getopt(argc, argv, "d:")) != -1)
  74                 switch (ch) {
  75                 case 'd':
  76                         passwd_dir = optarg;
  77                         break;
  78                 case '?':
  79                 default:
  80                         usage();
  81                 }
  82
  83         argc -= optind;
  84         argv += optind;
  85
  86         if (argc != 0)
  87                 usage();
  88
  89         if (pw_init(passwd_dir, NULL) == -1)
  90                 err(1, "pw_init()");
  91         if ((pfd = pw_lock()) == -1) {
  92                 pw_fini();
  93                 err(1, "pw_lock()");
  94         }
  95         if ((tfd = pw_tmp(pfd)) == -1) {
  96                 pw_fini();
  97                 err(1, "pw_tmp()");
  98         }
  99         (void)close(tfd);
 100         /* Force umask for partial writes made in the edit phase */
 101         (void)umask(077);
 102
 103         for (;;) {
 104                 switch (pw_edit(0)) {
 105                 case -1:
 106                         pw_fini();
 107                         err(1, "pw_edit()");
 108                 case 0:
 109                         pw_fini();
 110                         errx(0, "no changes made");
 111                 default:
 112                         break;
 113                 }
 114                 if (pw_mkdb(NULL) == 0) {
 115                         pw_fini();
 116                         errx(0, "password list updated");
 117                 }
 118                 printf("re-edit the password file? ");
 119                 fflush(stdout);
 120                 if ((line = fgetln(stdin, &len)) == NULL) {
 121                         pw_fini();
 122                         err(1, "fgetln()");
 123                 }
 124                 if (len > 0 && (*line == 'N' || *line == 'n'))
 125                         break;
 126         }
 127         pw_fini();
 128         exit(0);
 129 }
 130
 131 static void
 132 usage(void)
 133 {
 134
 135         (void)fprintf(stderr, "usage: vipw [-d directory]\n");
 136         exit(1);
 137 }