xref: /dragonfly/lib/libc/rpc/rpcdname.c (revision e65bc1c3)
1 /*
2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3  * unrestricted use provided that this legend is included on all tape
4  * media and as a part of the software program in whole or part.  Users
5  * may copy or modify Sun RPC without charge, but are not authorized
6  * to license or distribute it to anyone else except as part of a product or
7  * program developed by the user or with the express written consent of
8  * Sun Microsystems, Inc.
9  *
10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13  *
14  * Sun RPC is provided with no support and without any obligation on the
15  * part of Sun Microsystems, Inc. to assist in its use, correction,
16  * modification or enhancement.
17  *
18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20  * OR ANY PART THEREOF.
21  *
22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23  * or profits or other special, indirect and consequential damages, even if
24  * Sun has been advised of the possibility of such damages.
25  *
26  * Sun Microsystems, Inc.
27  * 2550 Garcia Avenue
28  * Mountain View, California  94043
29  *
30  * @(#)rpcdname.c 1.7 91/03/11 Copyr 1989 Sun Micro
31  * $FreeBSD: src/lib/libc/rpc/rpcdname.c,v 1.5 2004/10/16 06:11:35 obrien Exp $
32  */
33 
34 /*
35  * rpcdname.c
36  * Gets the default domain name
37  */
38 
39 #include "namespace.h"
40 #include <stdlib.h>
41 #include <unistd.h>
42 #include <string.h>
43 #include "un-namespace.h"
44 
45 static char *default_domain = NULL;
46 
47 static char *
48 get_default_domain(void)
49 {
50 	char temp[256];
51 
52 	if (default_domain)
53 		return (default_domain);
54 	if (getdomainname(temp, sizeof(temp)) < 0)
55 		return (0);
56 	if ((int) strlen(temp) > 0) {
57 		default_domain = (char *)malloc((strlen(temp)+(unsigned)1));
58 		if (default_domain == NULL)
59 			return (0);
60 		strcpy(default_domain, temp);
61 		return (default_domain);
62 	}
63 	return (0);
64 }
65 
66 /*
67  * This is a wrapper for the system call getdomainname which returns a
68  * ypclnt.h error code in the failure case.  It also checks to see that
69  * the domain name is non-null, knowing that the null string is going to
70  * get rejected elsewhere in the NIS client package.
71  */
72 int
73 __rpc_get_default_domain(char **domain)
74 {
75 	if ((*domain = get_default_domain()) != NULL)
76 		return (0);
77 	return (-1);
78 }
79