xref: /dragonfly/lib/libc/rpc/rpcdname.c (revision 0bb9290e)
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  * $DragonFly: src/lib/libc/rpc/rpcdname.c,v 1.3 2005/11/13 12:27:04 swildner Exp $
32  */
33 
34 /*
35  * rpcdname.c
36  * Gets the default domain name
37  */
38 
39 #include <stdlib.h>
40 #include <unistd.h>
41 #include <string.h>
42 
43 static char *default_domain = 0;
44 
45 static char *
46 get_default_domain(void)
47 {
48 	char temp[256];
49 
50 	if (default_domain)
51 		return (default_domain);
52 	if (getdomainname(temp, sizeof(temp)) < 0)
53 		return (0);
54 	if ((int) strlen(temp) > 0) {
55 		default_domain = (char *)malloc((strlen(temp)+(unsigned)1));
56 		if (default_domain == 0)
57 			return (0);
58 		strcpy(default_domain, temp);
59 		return (default_domain);
60 	}
61 	return (0);
62 }
63 
64 /*
65  * This is a wrapper for the system call getdomainname which returns a
66  * ypclnt.h error code in the failure case.  It also checks to see that
67  * the domain name is non-null, knowing that the null string is going to
68  * get rejected elsewhere in the NIS client package.
69  */
70 int
71 _rpc_get_default_domain(char **domain)
72 {
73 	if ((*domain = get_default_domain()) != 0)
74 		return (0);
75 	return (-1);
76 }
77