vipw.c revision 30765
11553Srgrimes/* 21553Srgrimes * Copyright (c) 1987, 1993, 1994 31553Srgrimes * The Regents of the University of California. All rights reserved. 41553Srgrimes * 51553Srgrimes * Redistribution and use in source and binary forms, with or without 61553Srgrimes * modification, are permitted provided that the following conditions 71553Srgrimes * are met: 81553Srgrimes * 1. Redistributions of source code must retain the above copyright 91553Srgrimes * notice, this list of conditions and the following disclaimer. 101553Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111553Srgrimes * notice, this list of conditions and the following disclaimer in the 121553Srgrimes * documentation and/or other materials provided with the distribution. 131553Srgrimes * 3. All advertising materials mentioning features or use of this software 141553Srgrimes * must display the following acknowledgement: 151553Srgrimes * This product includes software developed by the University of 161553Srgrimes * California, Berkeley and its contributors. 171553Srgrimes * 4. Neither the name of the University nor the names of its contributors 181553Srgrimes * may be used to endorse or promote products derived from this software 191553Srgrimes * without specific prior written permission. 201553Srgrimes * 211553Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221553Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231553Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241553Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251553Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261553Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271553Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281553Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291553Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301553Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311553Srgrimes * SUCH DAMAGE. 321553Srgrimes */ 331553Srgrimes 341553Srgrimes#ifndef lint 3530765Scharnierstatic const char copyright[] = 361553Srgrimes"@(#) Copyright (c) 1987, 1993, 1994\n\ 371553Srgrimes The Regents of the University of California. All rights reserved.\n"; 381553Srgrimes#endif /* not lint */ 391553Srgrimes 401553Srgrimes#ifndef lint 4130765Scharnier#if 0 421553Srgrimesstatic char sccsid[] = "@(#)vipw.c 8.3 (Berkeley) 4/2/94"; 4330765Scharnier#endif 4430765Scharnierstatic const char rcsid[] = 4530765Scharnier "$Id$"; 461553Srgrimes#endif /* not lint */ 471553Srgrimes 481553Srgrimes#include <sys/types.h> 491553Srgrimes#include <sys/stat.h> 501553Srgrimes 511553Srgrimes#include <err.h> 521553Srgrimes#include <pwd.h> 531553Srgrimes#include <stdio.h> 541553Srgrimes#include <stdlib.h> 551553Srgrimes#include <string.h> 561553Srgrimes#include <unistd.h> 571553Srgrimes 581553Srgrimes#include "pw_util.h" 591553Srgrimes 601553Srgrimeschar *tempname; 611553Srgrimes 621553Srgrimesvoid copyfile __P((int, int)); 6330765Scharnierstatic void usage __P((void)); 641553Srgrimes 651553Srgrimesint 661553Srgrimesmain(argc, argv) 671553Srgrimes int argc; 681553Srgrimes char *argv[]; 691553Srgrimes{ 701553Srgrimes int pfd, tfd; 711553Srgrimes struct stat begin, end; 721553Srgrimes int ch; 731553Srgrimes 7424428Simp while ((ch = getopt(argc, argv, "")) != -1) 751553Srgrimes switch (ch) { 761553Srgrimes case '?': 771553Srgrimes default: 781553Srgrimes usage(); 791553Srgrimes } 808857Srgrimes 811553Srgrimes argc -= optind; 821553Srgrimes argv += optind; 831553Srgrimes 841553Srgrimes if (argc != 0) 851553Srgrimes usage(); 861553Srgrimes 871553Srgrimes pw_init(); 881553Srgrimes pfd = pw_lock(); 891553Srgrimes tfd = pw_tmp(); 901553Srgrimes copyfile(pfd, tfd); 911553Srgrimes (void)close(tfd); 921553Srgrimes 931553Srgrimes for (;;) { 941553Srgrimes if (stat(tempname, &begin)) 951553Srgrimes pw_error(tempname, 1, 1); 961553Srgrimes pw_edit(0); 971553Srgrimes if (stat(tempname, &end)) 981553Srgrimes pw_error(tempname, 1, 1); 991553Srgrimes if (begin.st_mtime == end.st_mtime) { 1001553Srgrimes warnx("no changes made"); 1011553Srgrimes pw_error((char *)NULL, 0, 0); 1021553Srgrimes } 10316876Sguido if (pw_mkdb((char *)NULL)) 1041553Srgrimes break; 1051553Srgrimes pw_prompt(); 1061553Srgrimes } 1071553Srgrimes exit(0); 1081553Srgrimes} 1091553Srgrimes 1101553Srgrimesvoid 1111553Srgrimescopyfile(from, to) 1121553Srgrimes int from, to; 1131553Srgrimes{ 1141553Srgrimes int nr, nw, off; 1151553Srgrimes char buf[8*1024]; 1168857Srgrimes 1171553Srgrimes while ((nr = read(from, buf, sizeof(buf))) > 0) 1181553Srgrimes for (off = 0; off < nr; nr -= nw, off += nw) 1191553Srgrimes if ((nw = write(to, buf + off, nr)) < 0) 1201553Srgrimes pw_error(tempname, 1, 1); 1211553Srgrimes if (nr < 0) 1221553Srgrimes pw_error(_PATH_MASTERPASSWD, 1, 1); 1231553Srgrimes} 1241553Srgrimes 12530765Scharnierstatic void 1261553Srgrimesusage() 1271553Srgrimes{ 1281553Srgrimes 1291553Srgrimes (void)fprintf(stderr, "usage: vipw\n"); 1301553Srgrimes exit(1); 1311553Srgrimes} 132