1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* lib/gssapi/krb5/set_ccache.c */
3 /*
4 * Copyright 1999, 2003 by the Massachusetts Institute of Technology.
5 * All Rights Reserved.
6 *
7 * Export of this software from the United States of America may
8 * require a specific license from the United States Government.
9 * It is the responsibility of any person or organization contemplating
10 * export to obtain such a license before exporting.
11 *
12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
13 * distribute this software and its documentation for any purpose and
14 * without fee is hereby granted, provided that the above copyright
15 * notice appear in all copies and that both that copyright notice and
16 * this permission notice appear in supporting documentation, and that
17 * the name of M.I.T. not be used in advertising or publicity pertaining
18 * to distribution of the software without specific, written prior
19 * permission. Furthermore if you modify this software you must label
20 * your software as modified software and not distribute it in such a
21 * fashion that it might be confused with the original M.I.T. software.
22 * M.I.T. makes no representations about the suitability of
23 * this software for any purpose. It is provided "as is" without express
24 * or implied warranty.
25 */
26
27 /*
28 * Set ccache name used by gssapi, and optionally obtain old ccache
29 * name. Caller should not free returned name.
30 */
31
32 #include <string.h>
33 #include "gssapiP_krb5.h"
34
35 OM_uint32
gss_krb5int_ccache_name(OM_uint32 * minor_status,const gss_OID desired_mech,const gss_OID desired_object,const gss_buffer_t value)36 gss_krb5int_ccache_name(OM_uint32 *minor_status,
37 const gss_OID desired_mech,
38 const gss_OID desired_object,
39 const gss_buffer_t value)
40 {
41 char *old_name = NULL;
42 OM_uint32 err = 0;
43 OM_uint32 minor = 0;
44 char *gss_out_name;
45 struct krb5_gss_ccache_name_req *req;
46
47 err = gss_krb5int_initialize_library();
48 if (err) {
49 *minor_status = err;
50 return GSS_S_FAILURE;
51 }
52
53 assert(value->length == sizeof(*req));
54
55 if (value->length != sizeof(*req))
56 return GSS_S_FAILURE;
57
58 req = (struct krb5_gss_ccache_name_req *)value->value;
59
60 gss_out_name = k5_getspecific(K5_KEY_GSS_KRB5_SET_CCACHE_OLD_NAME);
61
62 if (req->out_name) {
63 const char *tmp_name = NULL;
64
65 if (!err) {
66 kg_get_ccache_name (&err, &tmp_name);
67 }
68 if (!err) {
69 old_name = gss_out_name;
70 gss_out_name = (char *)tmp_name;
71 }
72 }
73 /* If out_name was NULL, we keep the same gss_out_name value, and
74 don't free up any storage (leave old_name NULL). */
75
76 if (!err)
77 kg_set_ccache_name (&err, req->name);
78
79 minor = k5_setspecific(K5_KEY_GSS_KRB5_SET_CCACHE_OLD_NAME, gss_out_name);
80 if (minor) {
81 /* Um. Now what? */
82 if (err == 0) {
83 err = minor;
84 }
85 free(gss_out_name);
86 gss_out_name = NULL;
87 }
88
89 if (!err) {
90 if (req->out_name) {
91 *(req->out_name) = gss_out_name;
92 }
93 }
94
95 if (old_name != NULL) {
96 free (old_name);
97 }
98
99 *minor_status = err;
100 return (*minor_status == 0) ? GSS_S_COMPLETE : GSS_S_FAILURE;
101 }
102