xref: /illumos-gate/usr/src/lib/gss_mechs/mech_krb5/krb5/os/realm_dom.c (revision 581cede61ac9c14d8d4ea452562a567189eead78)
1 #pragma ident	"%Z%%M%	%I%	%E% SMI"
2 
3 /*
4  * lib/krb5/os/realm_dom.c
5  *
6  * Copyright 1990,1991 by the Massachusetts Institute of Technology.
7  * All Rights Reserved.
8  *
9  * Export of this software from the United States of America may
10  *   require a specific license from the United States Government.
11  *   It is the responsibility of any person or organization contemplating
12  *   export to obtain such a license before exporting.
13  *
14  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
15  * distribute this software and its documentation for any purpose and
16  * without fee is hereby granted, provided that the above copyright
17  * notice appear in all copies and that both that copyright notice and
18  * this permission notice appear in supporting documentation, and that
19  * the name of M.I.T. not be used in advertising or publicity pertaining
20  * to distribution of the software without specific, written prior
21  * permission.  Furthermore if you modify this software you must label
22  * your software as modified software and not distribute it in such a
23  * fashion that it might be confused with the original M.I.T. software.
24  * M.I.T. makes no representations about the suitability of
25  * this software for any purpose.  It is provided "as is" without express
26  * or implied warranty.
27  *
28  *
29  * krb5_get_realm_domain()
30  */
31 
32 
33 /*
34  * Determines the proper domain name for a realm.  This is mainly so that
35  * a krb4 principal can be converted properly into a krb5 principal.
36  * Currently, the same style of mapping file used in krb4.
37  *
38  * If realm is NULL, this function will assume the default realm
39  * of the local host.
40  *
41  * The returned domain is allocated, and must be freed by the caller.
42  *
43  * This was hacked together from krb5_get_host_realm().
44  */
45 
46 #include "k5-int.h"
47 #include <ctype.h>
48 #include <stdio.h>
49 
50 krb5_error_code KRB5_CALLCONV
51 krb5_get_realm_domain(krb5_context context, const char *realm, char **domain)
52 {
53     krb5_error_code retval;
54     char *temp_domain = 0;
55 
56     retval = profile_get_string(context->profile, "realms", realm,
57 			       "default_domain", realm, &temp_domain);
58     if (!retval && temp_domain)
59     {
60         *domain = malloc(strlen(temp_domain) + 1);
61         if (!*domain) {
62             retval = ENOMEM;
63         } else {
64             strcpy(*domain, temp_domain);
65         }
66         profile_release_string(temp_domain);
67     }
68     return retval;
69 }
70