150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/* $NetBSD: vipw.c,v 1.16 2011/08/31 16:25:00 plunky Exp $ */
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/*
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* Copyright (c) 1987, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1987, 1993, 1994\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)vipw.c 8.3 (Berkeley) 4/2/94";
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#else
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__RCSID("$NetBSD: vipw.c,v 1.16 2011/08/31 16:25:00 plunky Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <util.h>
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static void copyfile(int, int);
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__dead static void usage(void);
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static char mpwd[MAXPATHLEN], mpwdl[MAXPATHLEN];
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int
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main(int argc, char *argv[])
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{
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const char *prefix;
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int pfd, tfd;
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struct stat begin, end;
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int ch;
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prefix = "";
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while ((ch = getopt(argc, argv, "d:")) != -1) {
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switch (ch) {
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case 'd':
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prefix = optarg;
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if (pw_setprefix(prefix) < 0)
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err(1, "%s", prefix);
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 0)
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usage();
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(void)snprintf(mpwd, sizeof(mpwd), "%s%s", prefix, _PATH_MASTERPASSWD);
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(void)snprintf(mpwdl, sizeof(mpwdl), "%s%s", prefix,
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_PATH_MASTERPASSWD_LOCK);
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pw_init();
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tfd = pw_lock(0);
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if (tfd < 0) {
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if (errno == EEXIST)
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errx(1, "the passwd file is busy.");
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else
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err(1, "%s", mpwdl);
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}
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pfd = open(mpwd, O_RDONLY, 0);
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if (pfd < 0)
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pw_error(mpwd, 1, 1);
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copyfile(pfd, tfd);
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(void)close(tfd);
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for (;;) {
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if (stat(mpwdl, &begin))
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pw_error(mpwdl, 1, 1);
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pw_edit(0, NULL);
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if (stat(mpwdl, &end))
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pw_error(mpwdl, 1, 1);
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if (begin.st_mtime == end.st_mtime &&
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begin.st_mtimensec == end.st_mtimensec) {
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warnx("no changes made");
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pw_error(NULL, 0, 0);
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}
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if (pw_mkdb(NULL, 0) == 0)
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break;
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pw_prompt();
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}
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return 0;
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}
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static void
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copyfile(int from, int to)
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{
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int nr, nw, off;
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char buf[8*1024];
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while ((nr = read(from, buf, sizeof(buf))) > 0)
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for (off = 0; off < nr; nr -= nw, off += nw)
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if ((nw = write(to, buf + off, nr)) < 0)
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pw_error(mpwdl, 1, 1);
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if (nr < 0)
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pw_error(mpwd, 1, 1);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr, "usage: %s [-d directory]\n", getprogname());
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exit(1);
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}
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