kdc/misc.c

   1 /*
   2  * Copyright (c) 1997 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Kungliga Tekniska
  20  *      Högskolan and its contributors.
  21  *
  22  * 4. Neither the name of the Institute nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include "kdc_locl.h"
  40
  41 RCSID("$Id$");
  42
  43 struct timeval now;
  44
  45 hdb_entry*
  46 db_fetch(krb5_principal principal)
  47 {
  48     HDB *db;
  49     hdb_entry *ent;
  50     krb5_error_code ret;
  51
  52     ret = hdb_open(context, &db, database, O_RDONLY, 0);
  53     if (ret) {
  54         kdc_log(0, "Failed to open database: %s",
  55                 krb5_get_err_text(context, ret));
  56         return NULL;
  57     }
  58     ALLOC(ent);
  59     ent->principal = principal;
  60     ret = db->fetch(context, db, ent);
  61     db->close(context, db);
  62     if(ret){
  63         free(ent);
  64         return NULL;
  65     }
  66     return ent;
  67 }
  68
  69 static krb5_data master_key;
  70 static int master_key_set;
  71
  72 void
  73 set_master_key(EncryptionKey key)
  74 {
  75     krb5_error_code ret;
  76     ret = hdb_process_master_key(context, key, &master_key);
  77     if(ret)
  78         krb5_err(context, 1, ret, "Error processing master key file");
  79     des_set_random_generator_seed(key.keyvalue.data);
  80     master_key_set = 1;
  81 }
  82
  83 Key *
  84 unseal_key(Key *key)
  85 {
  86     Key *new;
  87     if(master_key_set){
  88         new = hdb_unseal_key(key, master_key);
  89     }else{
  90         new = ALLOC(new);
  91         copy_Key(key, new);
  92     }
  93     return new;
  94 }