1 /* 2 * Copyright (c) 1987, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1987, 1993, 1994 The Regents of the University of California. All rights reserved. 34 * @(#)vipw.c 8.3 (Berkeley) 4/2/94 35 * $FreeBSD: src/usr.sbin/vipw/vipw.c,v 1.11 1999/10/25 09:46:57 sheldonh Exp $ 36 * $DragonFly: src/usr.sbin/vipw/vipw.c,v 1.3 2003/11/03 19:31:44 eirikn Exp $ 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 "pw_util.h" 50 51 extern char *mppath; 52 extern char *masterpasswd; 53 char *tempname; 54 55 void copyfile(int, int); 56 static void usage(void); 57 58 int 59 main(argc, argv) 60 int argc; 61 char *argv[]; 62 { 63 int pfd, tfd; 64 struct stat begin, end; 65 int ch; 66 67 while ((ch = getopt(argc, argv, "d:")) != -1) 68 switch (ch) { 69 case 'd': 70 if ((masterpasswd = malloc(strlen(optarg) + 71 strlen(_MASTERPASSWD) + 2)) == NULL) 72 err(1, NULL); 73 strcpy(masterpasswd, optarg); 74 if (masterpasswd[strlen(masterpasswd) - 1] != '/') 75 strcat(masterpasswd, "/" _MASTERPASSWD); 76 else 77 strcat(masterpasswd, _MASTERPASSWD); 78 if ((mppath = strdup(optarg)) == NULL) 79 err(1, NULL); 80 if (mppath[strlen(mppath) - 1] == '/') 81 mppath[strlen(mppath) - 1] = '\0'; 82 break; 83 case '?': 84 default: 85 usage(); 86 } 87 88 argc -= optind; 89 argv += optind; 90 91 if (argc != 0) 92 usage(); 93 94 pw_init(); 95 pfd = pw_lock(); 96 tfd = pw_tmp(); 97 copyfile(pfd, tfd); 98 (void)close(tfd); 99 /* Force umask for partial writes made in the edit phase */ 100 (void)umask(077); 101 102 for (;;) { 103 if (stat(tempname, &begin)) 104 pw_error(tempname, 1, 1); 105 pw_edit(0); 106 if (stat(tempname, &end)) 107 pw_error(tempname, 1, 1); 108 if (begin.st_mtime == end.st_mtime) { 109 warnx("no changes made"); 110 pw_error((char *)NULL, 0, 0); 111 } 112 if (pw_mkdb((char *)NULL)) 113 break; 114 pw_prompt(); 115 } 116 exit(0); 117 } 118 119 void 120 copyfile(from, to) 121 int from, to; 122 { 123 int nr, nw, off; 124 char buf[8*1024]; 125 126 while ((nr = read(from, buf, sizeof(buf))) > 0) 127 for (off = 0; off < nr; nr -= nw, off += nw) 128 if ((nw = write(to, buf + off, nr)) < 0) 129 pw_error(tempname, 1, 1); 130 if (nr < 0) 131 pw_error(masterpasswd, 1, 1); 132 } 133 134 static void 135 usage() 136 { 137 138 (void)fprintf(stderr, "usage: vipw [ -d directory ]\n"); 139 exit(1); 140 } 141