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