1 /* $NetBSD: vipw.c,v 1.14 2009/04/19 00:44:49 lukem 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 40 static char sccsid[] = "@(#)vipw.c 8.3 (Berkeley) 4/2/94"; 41 #else 42 __RCSID("$NetBSD: vipw.c,v 1.14 2009/04/19 00:44:49 lukem 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 60 int main __P((int, char **)); 61 static void copyfile __P((int, int)); 62 static void usage __P((void)); 63 64 char mpwd[MAXPATHLEN], mpwdl[MAXPATHLEN]; 65 66 int 67 main(int argc, char *argv[]) 68 { 69 const char *prefix; 70 int pfd, tfd; 71 struct stat begin, end; 72 int ch; 73 74 prefix = ""; 75 while ((ch = getopt(argc, argv, "d:")) != -1) { 76 switch (ch) { 77 case 'd': 78 prefix = optarg; 79 if (pw_setprefix(prefix) < 0) 80 err(1, "%s", prefix); 81 break; 82 case '?': 83 default: 84 usage(); 85 } 86 } 87 argc -= optind; 88 argv += optind; 89 90 if (argc != 0) 91 usage(); 92 93 (void)snprintf(mpwd, sizeof(mpwd), "%s%s", prefix, _PATH_MASTERPASSWD); 94 (void)snprintf(mpwdl, sizeof(mpwdl), "%s%s", prefix, 95 _PATH_MASTERPASSWD_LOCK); 96 97 pw_init(); 98 tfd = pw_lock(0); 99 if (tfd < 0) { 100 if (errno == EEXIST) 101 errx(1, "the passwd file is busy."); 102 else 103 err(1, "%s", mpwdl); 104 } 105 106 pfd = open(mpwd, O_RDONLY, 0); 107 if (pfd < 0) 108 pw_error(mpwd, 1, 1); 109 copyfile(pfd, tfd); 110 (void)close(tfd); 111 112 for (;;) { 113 if (stat(mpwdl, &begin)) 114 pw_error(mpwdl, 1, 1); 115 pw_edit(0, NULL); 116 if (stat(mpwdl, &end)) 117 pw_error(mpwdl, 1, 1); 118 if (begin.st_mtime == end.st_mtime && 119 begin.st_mtimensec == end.st_mtimensec) { 120 warnx("no changes made"); 121 pw_error((char *)NULL, 0, 0); 122 } 123 if (pw_mkdb(NULL, 0) == 0) 124 break; 125 pw_prompt(); 126 } 127 return 0; 128 } 129 130 static void 131 copyfile(int from, int to) 132 { 133 int nr, nw, off; 134 char buf[8*1024]; 135 136 while ((nr = read(from, buf, sizeof(buf))) > 0) 137 for (off = 0; off < nr; nr -= nw, off += nw) 138 if ((nw = write(to, buf + off, nr)) < 0) 139 pw_error(mpwdl, 1, 1); 140 if (nr < 0) 141 pw_error(mpwd, 1, 1); 142 } 143 144 static void 145 usage(void) 146 { 147 148 (void)fprintf(stderr, "usage: %s [-d directory]\n", getprogname()); 149 exit(1); 150 } 151