crypto/dist/heimdal/kcm/renew.c

   1 /*
   2  * Copyright (c) 2005, PADL Software Pty Ltd.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. Neither the name of PADL Software nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "kcm_locl.h"
  34
  35 __RCSID("$Heimdal: renew.c 14566 2005-02-06 01:22:49Z lukeh $"
  36         "$NetBSD$");
  37
  38 krb5_error_code
  39 kcm_ccache_refresh(krb5_context context,
  40                    kcm_ccache ccache,
  41                    krb5_creds **credp)
  42 {
  43     krb5_error_code ret;
  44     krb5_creds in, *out;
  45     krb5_kdc_flags flags;
  46     krb5_const_realm realm;
  47     krb5_ccache_data ccdata;
  48
  49     memset(&in, 0, sizeof(in));
  50
  51     KCM_ASSERT_VALID(ccache);
  52
  53     if (ccache->client == NULL) {
  54         /* no primary principal */
  55         kcm_log(0, "Refresh credentials requested but no client principal");
  56         return KRB5_CC_NOTFOUND;
  57     }
  58
  59     HEIMDAL_MUTEX_lock(&ccache->mutex);
  60
  61     /* Fake up an internal ccache */
  62     kcm_internal_ccache(context, ccache, &ccdata);
  63
  64     /* Find principal */
  65     in.client = ccache->client;
  66
  67     if (ccache->server != NULL) {
  68         ret = krb5_copy_principal(context, ccache->server, &in.server);
  69         if (ret) {
  70             kcm_log(0, "Failed to copy service principal: %s",
  71                     krb5_get_err_text(context, ret));
  72             goto out;
  73         }
  74     } else {
  75         realm = krb5_principal_get_realm(context, in.client);
  76         ret = krb5_make_principal(context, &in.server, realm,
  77                                   KRB5_TGS_NAME, realm, NULL);
  78         if (ret) {
  79             kcm_log(0, "Failed to make TGS principal for realm %s: %s",
  80                     realm, krb5_get_err_text(context, ret));
  81             goto out;
  82         }
  83     }
  84
  85     if (ccache->tkt_life)
  86         in.times.endtime = time(NULL) + ccache->tkt_life;
  87     if (ccache->renew_life)
  88         in.times.renew_till = time(NULL) + ccache->renew_life;
  89
  90     flags.i = 0;
  91     flags.b.renewable = TRUE;
  92     flags.b.renew = TRUE;
  93
  94     ret = krb5_get_kdc_cred(context,
  95                             &ccdata,
  96                             flags,
  97                             NULL,
  98                             NULL,
  99                             &in,
 100                             &out);
 101     if (ret) {
 102         kcm_log(0, "Failed to renew credentials for cache %s: %s",
 103                 ccache->name, krb5_get_err_text(context, ret));
 104         goto out;
 105     }
 106
 107     /* Swap them in */
 108     kcm_ccache_remove_creds_internal(context, ccache);
 109
 110     ret = kcm_ccache_store_cred_internal(context, ccache, out, 0, credp);
 111     if (ret) {
 112         kcm_log(0, "Failed to store credentials for cache %s: %s",
 113                 ccache->name, krb5_get_err_text(context, ret));
 114         krb5_free_creds(context, out);
 115         goto out;
 116     }
 117
 118     free(out); /* but not contents */
 119
 120 out:
 121     HEIMDAL_MUTEX_unlock(&ccache->mutex);
 122
 123     return ret;
 124 }
 125