1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 *   this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 *   this list of conditions and the following disclaimer in the documentation
13 *   and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 *   contributors may be used to endorse or promote products derived
16 *   from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#if defined(LIBC_SCCS) && !defined(lint)
32static char sccsid[] = "@(#)rpcdname.c 1.7 91/03/11 Copyr 1989 Sun Micro";
33#endif
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD$");
36
37/*
38 * rpcdname.c
39 * Gets the default domain name
40 */
41
42#include "namespace.h"
43#include <stdlib.h>
44#include <unistd.h>
45#include <string.h>
46#include "un-namespace.h"
47
48static char *default_domain;
49
50static char *
51get_default_domain(void)
52{
53	char temp[256];
54
55	if (default_domain != NULL)
56		return (default_domain);
57	if (getdomainname(temp, sizeof(temp)) < 0)
58		return (0);
59	if ((int) strlen(temp) > 0) {
60		default_domain = malloc((strlen(temp) + (unsigned)1));
61		if (default_domain == NULL)
62			return (0);
63		(void) strcpy(default_domain, temp);
64		return (default_domain);
65	}
66	return (0);
67}
68
69/*
70 * This is a wrapper for the system call getdomainname which returns a
71 * ypclnt.h error code in the failure case.  It also checks to see that
72 * the domain name is non-null, knowing that the null string is going to
73 * get rejected elsewhere in the NIS client package.
74 */
75int
76__rpc_get_default_domain(char **domain)
77{
78	if ((*domain = get_default_domain()) != NULL)
79		return (0);
80	return (-1);
81}
82