1 /* $NetBSD: renew.c,v 1.1.1.2 2014/04/24 12:45:27 pettai Exp $ */
2
3 /*
4 * Copyright (c) 2005, PADL Software Pty Ltd.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * 3. Neither the name of PADL Software nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include "kcm_locl.h"
36
37 __RCSID("NetBSD");
38
39 krb5_error_code
kcm_ccache_refresh(krb5_context context,kcm_ccache ccache,krb5_creds ** credp)40 kcm_ccache_refresh(krb5_context context,
41 kcm_ccache ccache,
42 krb5_creds **credp)
43 {
44 krb5_error_code ret;
45 krb5_creds in, *out;
46 krb5_kdc_flags flags;
47 krb5_const_realm realm;
48 krb5_ccache_data ccdata;
49
50 memset(&in, 0, sizeof(in));
51
52 KCM_ASSERT_VALID(ccache);
53
54 if (ccache->client == NULL) {
55 /* no primary principal */
56 kcm_log(0, "Refresh credentials requested but no client principal");
57 return KRB5_CC_NOTFOUND;
58 }
59
60 HEIMDAL_MUTEX_lock(&ccache->mutex);
61
62 /* Fake up an internal ccache */
63 kcm_internal_ccache(context, ccache, &ccdata);
64
65 /* Find principal */
66 in.client = ccache->client;
67
68 if (ccache->server != NULL) {
69 ret = krb5_copy_principal(context, ccache->server, &in.server);
70 if (ret) {
71 kcm_log(0, "Failed to copy service principal: %s",
72 krb5_get_err_text(context, ret));
73 goto out;
74 }
75 } else {
76 realm = krb5_principal_get_realm(context, in.client);
77 ret = krb5_make_principal(context, &in.server, realm,
78 KRB5_TGS_NAME, realm, NULL);
79 if (ret) {
80 kcm_log(0, "Failed to make TGS principal for realm %s: %s",
81 realm, krb5_get_err_text(context, ret));
82 goto out;
83 }
84 }
85
86 if (ccache->tkt_life)
87 in.times.endtime = time(NULL) + ccache->tkt_life;
88 if (ccache->renew_life)
89 in.times.renew_till = time(NULL) + ccache->renew_life;
90
91 flags.i = 0;
92 flags.b.renewable = TRUE;
93 flags.b.renew = TRUE;
94
95 ret = krb5_get_kdc_cred(context,
96 &ccdata,
97 flags,
98 NULL,
99 NULL,
100 &in,
101 &out);
102 if (ret) {
103 kcm_log(0, "Failed to renew credentials for cache %s: %s",
104 ccache->name, krb5_get_err_text(context, ret));
105 goto out;
106 }
107
108 /* Swap them in */
109 kcm_ccache_remove_creds_internal(context, ccache);
110
111 ret = kcm_ccache_store_cred_internal(context, ccache, out, 0, credp);
112 if (ret) {
113 kcm_log(0, "Failed to store credentials for cache %s: %s",
114 ccache->name, krb5_get_err_text(context, ret));
115 krb5_free_creds(context, out);
116 goto out;
117 }
118
119 free(out); /* but not contents */
120
121 out:
122 HEIMDAL_MUTEX_unlock(&ccache->mutex);
123
124 return ret;
125 }
126
127