1/* $NetBSD: vipw.c,v 1.15 2011/08/30 20:52:10 joerg Exp $ */ 2 3/* 4 * Copyright (c) 1987, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34__COPYRIGHT("@(#) Copyright (c) 1987, 1993, 1994\ 35 The Regents of the University of California. All rights reserved."); 36#endif /* not lint */ 37 38#ifndef lint 39#if 0 40static char sccsid[] = "@(#)vipw.c 8.3 (Berkeley) 4/2/94"; 41#else 42__RCSID("$NetBSD: vipw.c,v 1.15 2011/08/30 20:52:10 joerg Exp $"); 43#endif 44#endif /* not lint */ 45 46#include <sys/types.h> 47#include <sys/param.h> 48#include <sys/stat.h> 49 50#include <err.h> 51#include <pwd.h> 52#include <stdio.h> 53#include <stdlib.h> 54#include <string.h> 55#include <unistd.h> 56#include <fcntl.h> 57#include <errno.h> 58#include <util.h> 59 60static void copyfile(int, int); 61__dead static void usage(void); 62 63static char mpwd[MAXPATHLEN], mpwdl[MAXPATHLEN]; 64 65int 66main(int argc, char *argv[]) 67{ 68 const char *prefix; 69 int pfd, tfd; 70 struct stat begin, end; 71 int ch; 72 73 prefix = ""; 74 while ((ch = getopt(argc, argv, "d:")) != -1) { 75 switch (ch) { 76 case 'd': 77 prefix = optarg; 78 if (pw_setprefix(prefix) < 0) 79 err(1, "%s", prefix); 80 break; 81 case '?': 82 default: 83 usage(); 84 } 85 } 86 argc -= optind; 87 argv += optind; 88 89 if (argc != 0) 90 usage(); 91 92 (void)snprintf(mpwd, sizeof(mpwd), "%s%s", prefix, _PATH_MASTERPASSWD); 93 (void)snprintf(mpwdl, sizeof(mpwdl), "%s%s", prefix, 94 _PATH_MASTERPASSWD_LOCK); 95 96 pw_init(); 97 tfd = pw_lock(0); 98 if (tfd < 0) { 99 if (errno == EEXIST) 100 errx(1, "the passwd file is busy."); 101 else 102 err(1, "%s", mpwdl); 103 } 104 105 pfd = open(mpwd, O_RDONLY, 0); 106 if (pfd < 0) 107 pw_error(mpwd, 1, 1); 108 copyfile(pfd, tfd); 109 (void)close(tfd); 110 111 for (;;) { 112 if (stat(mpwdl, &begin)) 113 pw_error(mpwdl, 1, 1); 114 pw_edit(0, NULL); 115 if (stat(mpwdl, &end)) 116 pw_error(mpwdl, 1, 1); 117 if (begin.st_mtime == end.st_mtime && 118 begin.st_mtimensec == end.st_mtimensec) { 119 warnx("no changes made"); 120 pw_error(NULL, 0, 0); 121 } 122 if (pw_mkdb(NULL, 0) == 0) 123 break; 124 pw_prompt(); 125 } 126 return 0; 127} 128 129static void 130copyfile(int from, int to) 131{ 132 int nr, nw, off; 133 char buf[8*1024]; 134 135 while ((nr = read(from, buf, sizeof(buf))) > 0) 136 for (off = 0; off < nr; nr -= nw, off += nw) 137 if ((nw = write(to, buf + off, nr)) < 0) 138 pw_error(mpwdl, 1, 1); 139 if (nr < 0) 140 pw_error(mpwd, 1, 1); 141} 142 143static void 144usage(void) 145{ 146 147 (void)fprintf(stderr, "usage: %s [-d directory]\n", getprogname()); 148 exit(1); 149} 150