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/*
32 * rpcdname.c
33 * Gets the default domain name
34 */
35
36#include "namespace.h"
37#include <stdlib.h>
38#include <unistd.h>
39#include <string.h>
40#include "un-namespace.h"
41
42static char *default_domain;
43
44static char *
45get_default_domain(void)
46{
47	char temp[256];
48
49	if (default_domain != NULL)
50		return (default_domain);
51	if (getdomainname(temp, sizeof(temp)) < 0)
52		return (0);
53	if ((int) strlen(temp) > 0) {
54		default_domain = malloc((strlen(temp) + (unsigned)1));
55		if (default_domain == NULL)
56			return (0);
57		(void) strcpy(default_domain, temp);
58		return (default_domain);
59	}
60	return (0);
61}
62
63/*
64 * This is a wrapper for the system call getdomainname which returns a
65 * ypclnt.h error code in the failure case.  It also checks to see that
66 * the domain name is non-null, knowing that the null string is going to
67 * get rejected elsewhere in the NIS client package.
68 */
69int
70__rpc_get_default_domain(char **domain)
71{
72	if ((*domain = get_default_domain()) != NULL)
73		return (0);
74	return (-1);
75}
76