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
42 static char *default_domain;
43
44 static char *
get_default_domain(void)45 get_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 */
69 int
__rpc_get_default_domain(char ** domain)70 __rpc_get_default_domain(char **domain)
71 {
72 if ((*domain = get_default_domain()) != NULL)
73 return (0);
74 return (-1);
75 }
76