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