xref: /freebsd-11-stable/usr.sbin/pw/pw_nis.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (C) 1996
 *	David L. Nugent.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static const char rcsid[] =
  "$FreeBSD: stable/11/usr.sbin/pw/pw_nis.c 330449 2018-03-05 07:26:05Z eadler $";
#endif /* not lint */

#include <sys/types.h>

#include <err.h>
#include <pwd.h>
#include <libutil.h>
#include <unistd.h>

#include "pw.h"

static int
pw_nisupdate(const char * path, struct passwd * pwd, char const * user)
{
	int pfd, tfd;
	struct passwd *pw = NULL;
	struct passwd *old_pw = NULL;

	printf("===> %s\n", path);
	if (pwd != NULL)
		pw = pw_dup(pwd);

	if (user != NULL)
		old_pw = GETPWNAM(user);

	if (pw_init(NULL, path))
		err(1,"pw_init()");
	if ((pfd = pw_lock()) == -1) {
		pw_fini();
		err(1, "pw_lock()");
	}
	if ((tfd = pw_tmp(-1)) == -1) {
		pw_fini();
		err(1, "pw_tmp()");
	}
	if (pw_copy(pfd, tfd, pw, old_pw) == -1) {
		pw_fini();
		close(tfd);
		err(1, "pw_copy()");
	}
	fsync(tfd);
	close(tfd);
	if (chmod(pw_tempname(), 0644) == -1)
		err(1, "chmod()");
	if (rename(pw_tempname(), path) == -1)
		err(1, "rename()");

	free(pw);
	pw_fini();

	return (0);
}

int
addnispwent(const char *path, struct passwd * pwd)
{
	return pw_nisupdate(path, pwd, NULL);
}

int
chgnispwent(const char *path, char const * login, struct passwd * pwd)
{
	return pw_nisupdate(path, pwd, login);
}

int
delnispwent(const char *path, const char *login)
{
	return pw_nisupdate(path, NULL, login);
}