1 /*
2  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 #pragma ident	"%Z%%M%	%I%	%E% SMI"
7 
8 /*
9  * lib/gssapi/krb5/set_ccache.c
10  *
11  * Copyright 1999, 2003 by the Massachusetts Institute of Technology.
12  * All Rights Reserved.
13  *
14  * Export of this software from the United States of America may
15  *   require a specific license from the United States Government.
16  *   It is the responsibility of any person or organization contemplating
17  *   export to obtain such a license before exporting.
18  *
19  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
20  * distribute this software and its documentation for any purpose and
21  * without fee is hereby granted, provided that the above copyright
22  * notice appear in all copies and that both that copyright notice and
23  * this permission notice appear in supporting documentation, and that
24  * the name of M.I.T. not be used in advertising or publicity pertaining
25  * to distribution of the software without specific, written prior
26  * permission.  Furthermore if you modify this software you must label
27  * your software as modified software and not distribute it in such a
28  * fashion that it might be confused with the original M.I.T. software.
29  * M.I.T. makes no representations about the suitability of
30  * this software for any purpose.  It is provided "as is" without express
31  * or implied warranty.
32  *
33  * Set ccache name used by gssapi, and optionally obtain old ccache
34  * name.  Caller should not free returned name.
35  */
36 
37 #include <string.h>
38 #include "gssapiP_krb5.h"
39 #include "gss_libinit.h"
40 
41 OM_uint32 KRB5_CALLCONV
42 gss_krb5_ccache_name(minor_status, name, out_name)
43 	OM_uint32 *minor_status;
44 	const char *name;
45 	const char **out_name;
46 {
47     char *old_name = NULL;
48     OM_uint32 err = 0;
49     OM_uint32 minor = 0;
50     char *gss_out_name;
51 
52     err = gssint_initialize_library();
53     if (err) {
54 	*minor_status = err;
55 	return GSS_S_FAILURE;
56     }
57 
58     gss_out_name = k5_getspecific(K5_KEY_GSS_KRB5_SET_CCACHE_OLD_NAME);
59 
60     if (out_name) {
61         const char *tmp_name = NULL;
62 
63         if (!err) {
64             kg_get_ccache_name (&err, &tmp_name);
65         }
66         if (!err) {
67             old_name = gss_out_name;
68             gss_out_name = (char *)tmp_name;
69         }
70     }
71     /* If out_name was NULL, we keep the same gss_out_name value, and
72        don't free up any storage (leave old_name NULL).  */
73 
74     if (!err)
75         kg_set_ccache_name (&err, name);
76 
77     minor = k5_setspecific(K5_KEY_GSS_KRB5_SET_CCACHE_OLD_NAME, gss_out_name);
78     if (minor) {
79 	/* Um.  Now what?  */
80 	if (err == 0) {
81 	    err = minor;
82 	}
83 	free(gss_out_name);
84 	gss_out_name = NULL;
85     }
86 
87     if (!err) {
88         if (out_name) {
89             *out_name = gss_out_name;
90         }
91     }
92 
93     if (old_name != NULL) {
94         free (old_name);
95     }
96 
97     *minor_status = err;
98     return (*minor_status == 0) ? GSS_S_COMPLETE : GSS_S_FAILURE;
99 }
100