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 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1987, 1993, 1994\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)vipw.c 8.3 (Berkeley) 4/2/94"; 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 47 #include <err.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 #include "pw_util.h" 55 56 char *tempname; 57 58 void copyfile __P((int, int)); 59 void usage __P((void)); 60 61 int 62 main(argc, argv) 63 int argc; 64 char *argv[]; 65 { 66 int pfd, tfd; 67 struct stat begin, end; 68 int ch; 69 70 while ((ch = getopt(argc, argv, "")) != EOF) 71 switch (ch) { 72 case '?': 73 default: 74 usage(); 75 } 76 77 argc -= optind; 78 argv += optind; 79 80 if (argc != 0) 81 usage(); 82 83 pw_init(); 84 pfd = pw_lock(); 85 tfd = pw_tmp(); 86 copyfile(pfd, tfd); 87 (void)close(tfd); 88 89 for (;;) { 90 if (stat(tempname, &begin)) 91 pw_error(tempname, 1, 1); 92 pw_edit(0); 93 if (stat(tempname, &end)) 94 pw_error(tempname, 1, 1); 95 if (begin.st_mtime == end.st_mtime) { 96 warnx("no changes made"); 97 pw_error((char *)NULL, 0, 0); 98 } 99 if (pw_mkdb((char *)NULL)) 100 break; 101 pw_prompt(); 102 } 103 exit(0); 104 } 105 106 void 107 copyfile(from, to) 108 int from, to; 109 { 110 int nr, nw, off; 111 char buf[8*1024]; 112 113 while ((nr = read(from, buf, sizeof(buf))) > 0) 114 for (off = 0; off < nr; nr -= nw, off += nw) 115 if ((nw = write(to, buf + off, nr)) < 0) 116 pw_error(tempname, 1, 1); 117 if (nr < 0) 118 pw_error(_PATH_MASTERPASSWD, 1, 1); 119 } 120 121 void 122 usage() 123 { 124 125 (void)fprintf(stderr, "usage: vipw\n"); 126 exit(1); 127 } 128