Line data    Source code

       1             : /*
       2             :    Unix SMB/CIFS implementation.
       3             : 
       4             :    Samba KDB plugin for MIT Kerberos
       5             : 
       6             :    Copyright (c) 2010      Simo Sorce <idra@samba.org>.
       7             :    Copyright (c) 2014      Andreas Schneider <asn@samba.org>
       8             : 
       9             :    This program is free software; you can redistribute it and/or modify
      10             :    it under the terms of the GNU General Public License as published by
      11             :    the Free Software Foundation; either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    This program is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU General Public License
      20             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.
      21             : */
      22             : 
      23             : #include "includes.h"
      24             : 
      25             : #include "system/kerberos.h"
      26             : 
      27             : #include <profile.h>
      28             : #include <kdb.h>
      29             : 
      30             : #include "kdc/mit_samba.h"
      31             : #include "kdb_samba.h"
      32             : 
      33             : #undef DBGC_CLASS
      34             : #define DBGC_CLASS DBGC_KERBEROS
      35             : 
      36          90 : krb5_error_code kdb_samba_dbekd_decrypt_key_data(krb5_context context,
      37             :                                                  const krb5_keyblock *mkey,
      38             :                                                  const krb5_key_data *key_data,
      39             :                                                  krb5_keyblock *kkey,
      40             :                                                  krb5_keysalt *keysalt)
      41             : {
      42             :         /*
      43             :          * NOTE: Samba doesn't use a master key, so we will just copy
      44             :          * the contents around untouched.
      45             :          */
      46          90 :         ZERO_STRUCTP(kkey);
      47             : 
      48          90 :         kkey->magic = KV5M_KEYBLOCK;
      49          90 :         kkey->enctype = key_data->key_data_type[0];
      50          90 :         kkey->contents = malloc(key_data->key_data_length[0]);
      51          90 :         if (kkey->contents == NULL) {
      52           0 :                 return ENOMEM;
      53             :         }
      54          90 :         memcpy(kkey->contents,
      55          90 :                key_data->key_data_contents[0],
      56          90 :                key_data->key_data_length[0]);
      57          90 :         kkey->length = key_data->key_data_length[0];
      58             : 
      59          90 :         if (keysalt != NULL) {
      60           0 :                 keysalt->type = key_data->key_data_type[1];
      61           0 :                 keysalt->data.data = malloc(key_data->key_data_length[1]);
      62           0 :                 if (keysalt->data.data == NULL) {
      63           0 :                         free(kkey->contents);
      64           0 :                         return ENOMEM;
      65             :                 }
      66           0 :                 memcpy(keysalt->data.data,
      67           0 :                        key_data->key_data_contents[1],
      68           0 :                        key_data->key_data_length[1]);
      69           0 :                 keysalt->data.length = key_data->key_data_length[1];
      70             :         }
      71             : 
      72          90 :         return 0;
      73             : }
      74             : 
      75           0 : krb5_error_code kdb_samba_dbekd_encrypt_key_data(krb5_context context,
      76             :                                                  const krb5_keyblock *mkey,
      77             :                                                  const krb5_keyblock *kkey,
      78             :                                                  const krb5_keysalt *keysalt,
      79             :                                                  int keyver,
      80             :                                                  krb5_key_data *key_data)
      81             : {
      82             :         /*
      83             :          * NOTE: samba doesn't use a master key, so we will just copy
      84             :          * the contents around untouched.
      85             :          */
      86             : 
      87           0 :         ZERO_STRUCTP(key_data);
      88             : 
      89           0 :         key_data->key_data_ver = KRB5_KDB_V1_KEY_DATA_ARRAY;
      90           0 :         key_data->key_data_kvno = keyver;
      91           0 :         key_data->key_data_type[0] = kkey->enctype;
      92           0 :         key_data->key_data_contents[0] = malloc(kkey->length);
      93           0 :         if (key_data->key_data_contents[0] == NULL) {
      94           0 :                 return ENOMEM;
      95             :         }
      96           0 :         memcpy(key_data->key_data_contents[0],
      97           0 :                kkey->contents,
      98           0 :                kkey->length);
      99           0 :         key_data->key_data_length[0] = kkey->length;
     100             : 
     101           0 :         if (keysalt != NULL) {
     102           0 :                 key_data->key_data_type[1] = keysalt->type;
     103           0 :                 key_data->key_data_contents[1] = malloc(keysalt->data.length);
     104           0 :                 if (key_data->key_data_contents[1] == NULL) {
     105           0 :                         free(key_data->key_data_contents[0]);
     106           0 :                         return ENOMEM;
     107             :                 }
     108           0 :                 memcpy(key_data->key_data_contents[1],
     109           0 :                        keysalt->data.data,
     110           0 :                        keysalt->data.length);
     111           0 :                 key_data->key_data_length[1] = keysalt->data.length;
     112             :         }
     113             : 
     114           0 :         return 0;
     115             : }