renew.c revision 1.1.1.1.4.1 
1/*	$NetBSD: renew.c,v 1.1.1.1.4.1 2014/05/22 13:21:24 yamt 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
39krb5_error_code
40kcm_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
121out:
122    HEIMDAL_MUTEX_unlock(&ccache->mutex);
123
124    return ret;
125}
126
127