xref: /freebsd/crypto/heimdal/lib/krb5/get_default_realm.c (revision 42c159fe388a3765f69860c84183700af37aca8a)
1 /*
2  * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the Institute nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include "krb5_locl.h"
35 
36 RCSID("$Id: get_default_realm.c,v 1.10 2001/07/19 16:55:27 assar Exp $");
37 
38 /*
39  * Return a NULL-terminated list of default realms in `realms'.
40  * Free this memory with krb5_free_host_realm.
41  */
42 
43 krb5_error_code
44 krb5_get_default_realms (krb5_context context,
45 			 krb5_realm **realms)
46 {
47     if (context->default_realms == NULL) {
48 	krb5_error_code ret = krb5_set_default_realm (context, NULL);
49 	if (ret)
50 	    return KRB5_CONFIG_NODEFREALM;
51     }
52 
53     return krb5_copy_host_realm (context,
54 				 context->default_realms,
55 				 realms);
56 }
57 
58 /*
59  * Return the first default realm.  For compatability.
60  */
61 
62 krb5_error_code
63 krb5_get_default_realm(krb5_context context,
64 		       krb5_realm *realm)
65 {
66     char *res;
67 
68     if (context->default_realms == NULL
69 	|| context->default_realms[0] == NULL) {
70 	krb5_error_code ret = krb5_set_default_realm (context, NULL);
71 	if (ret) {
72 	    krb5_set_error_string(context, "no default realm configured");
73 	    return KRB5_CONFIG_NODEFREALM;
74 	}
75     }
76 
77     res = strdup (context->default_realms[0]);
78     if (res == NULL) {
79 	krb5_set_error_string(context, "malloc: out of memory");
80 	return ENOMEM;
81     }
82     *realm = res;
83     return 0;
84 }
85