lib/kadm5/setkey3_s.c

   1 /*
   2  * Copyright (c) 1997-2001, 2003, 2005-2006 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. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kadm5_locl.h"
  35
  36 /**
  37  * Server-side function to set new keys for a principal.
  38  */
  39 kadm5_ret_t
  40 kadm5_s_setkey_principal_3(void *server_handle,
  41                            krb5_principal princ,
  42                            krb5_boolean keepold,
  43                            int n_ks_tuple,
  44                            krb5_key_salt_tuple *ks_tuple,
  45                            krb5_keyblock *keyblocks, int n_keys)
  46 {
  47     kadm5_server_context *context = server_handle;
  48     hdb_entry_ex ent;
  49     kadm5_ret_t ret = 0;
  50
  51     memset(&ent, 0, sizeof(ent));
  52     if (!context->keep_open)
  53         ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
  54     if (ret)
  55         return ret;
  56
  57     ret = kadm5_log_init(context);
  58     if (ret) {
  59         if (!context->keep_open)
  60             context->db->hdb_close(context->context, context->db);
  61         return ret;
  62     }
  63
  64     ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
  65                                       HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
  66     if (ret) {
  67         (void) kadm5_log_end(context);
  68         if (!context->keep_open)
  69             context->db->hdb_close(context->context, context->db);
  70         return ret;
  71     }
  72
  73     if (keepold) {
  74         ret = hdb_add_current_keys_to_history(context->context, &ent.entry);
  75     } else
  76         ret = hdb_clear_extension(context->context, &ent.entry,
  77                                   choice_HDB_extension_data_hist_keys);
  78
  79     /*
  80      * Though in practice all real calls to this function will pass an empty
  81      * ks_tuple, and cannot in any case employ any salts that require
  82      * additional data, we go the extra mile to set any requested salt type
  83      * along with a zero length salt value.  While we're at it we check that
  84      * each ks_tuple's enctype matches the corresponding key enctype.
  85      */
  86     if (ret == 0) {
  87         int i;
  88
  89         free_Keys(&ent.entry.keys);
  90         for (i = 0; i < n_keys; ++i) {
  91             Key k;
  92             Salt s;
  93
  94             k.mkvno = 0;
  95             k.key = keyblocks[i];
  96             if (n_ks_tuple == 0)
  97                 k.salt = 0;
  98             else {
  99                 if (ks_tuple[i].ks_enctype != keyblocks[i].keytype) {
 100                     ret = KADM5_SETKEY3_ETYPE_MISMATCH;
 101                     break;
 102                 }
 103                 s.type = ks_tuple[i].ks_salttype;
 104                 s.salt.data = 0;
 105                 s.opaque = 0;
 106                 k.salt = &s;
 107             }
 108             if ((ret = add_Keys(&ent.entry.keys, &k)) != 0)
 109                 break;
 110         }
 111     }
 112
 113     if (ret == 0) {
 114         ent.entry.kvno++;
 115         ent.entry.flags.require_pwchange = 0;
 116         hdb_entry_set_pw_change_time(context->context, &ent.entry, 0);
 117         hdb_entry_clear_password(context->context, &ent.entry);
 118
 119         if ((ret = hdb_seal_keys(context->context, context->db,
 120                                  &ent.entry)) == 0
 121             && (ret = _kadm5_set_modifier(context, &ent.entry)) == 0
 122             && (ret = _kadm5_bump_pw_expire(context, &ent.entry)) == 0)
 123             ret = kadm5_log_modify(context, &ent.entry,
 124                                    KADM5_ATTRIBUTES | KADM5_PRINCIPAL |
 125                                    KADM5_MOD_NAME | KADM5_MOD_TIME |
 126                                    KADM5_KEY_DATA | KADM5_KVNO |
 127                                    KADM5_PW_EXPIRATION | KADM5_TL_DATA);
 128     }
 129
 130     hdb_free_entry(context->context, &ent);
 131     (void) kadm5_log_end(context);
 132     if (!context->keep_open)
 133         context->db->hdb_close(context->context, context->db);
 134     return _kadm5_error_code(ret);
 135 }