source3/libsmb/trusts_util.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Routines to operate on various trust relationships
   4  *  Copyright (C) Andrew Bartlett                   2001
   5  *  Copyright (C) Rafal Szczesniak                  2003
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "includes.h"
  22 #include "../libcli/auth/libcli_auth.h"
  23 #include "rpc_client/cli_netlogon.h"
  24 #include "rpc_client/cli_pipe.h"
  25 #include "../librpc/gen_ndr/ndr_netlogon.h"
  26 #include "secrets.h"
  27 #include "passdb.h"
  28 #include "libsmb/libsmb.h"
  29
  30 /*********************************************************
  31  Change the domain password on the PDC.
  32  Do most of the legwork ourselfs.  Caller must have
  33  already setup the connection to the NETLOGON pipe
  34 **********************************************************/
  35
  36 NTSTATUS trust_pw_find_change_and_store_it(struct rpc_pipe_client *cli,
  37                                            TALLOC_CTX *mem_ctx,
  38                                            const char *domain)
  39 {
  40         unsigned char old_trust_passwd_hash[16];
  41         unsigned char new_trust_passwd_hash[16];
  42         enum netr_SchannelType sec_channel_type = SEC_CHAN_NULL;
  43         const char *account_name;
  44         char *new_trust_passwd;
  45         NTSTATUS nt_status;
  46
  47         if (!get_trust_pw_hash(domain, old_trust_passwd_hash, &account_name,
  48                                &sec_channel_type)) {
  49                 DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
  50                 return NT_STATUS_UNSUCCESSFUL;
  51         }
  52
  53         switch (sec_channel_type) {
  54         case SEC_CHAN_WKSTA:
  55         case SEC_CHAN_DOMAIN:
  56                 break;
  57         default:
  58                 return NT_STATUS_NOT_SUPPORTED;
  59         }
  60
  61         /* Create a random machine account password */
  62         new_trust_passwd = generate_random_password(mem_ctx,
  63                                 DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH,
  64                                 DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
  65         if (new_trust_passwd == NULL) {
  66                 DEBUG(0, ("generate_random_password failed\n"));
  67                 return NT_STATUS_NO_MEMORY;
  68         }
  69
  70         E_md4hash(new_trust_passwd, new_trust_passwd_hash);
  71
  72         nt_status = rpccli_netlogon_set_trust_password(cli, mem_ctx,
  73                                                        account_name,
  74                                                        old_trust_passwd_hash,
  75                                                        new_trust_passwd,
  76                                                        new_trust_passwd_hash,
  77                                                        sec_channel_type);
  78
  79         if (NT_STATUS_IS_OK(nt_status)) {
  80                 DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n",
  81                          current_timestring(talloc_tos(), False)));
  82                 /*
  83                  * Return the result of trying to write the new password
  84                  * back into the trust account file.
  85                  */
  86
  87                 switch (sec_channel_type) {
  88
  89                 case SEC_CHAN_WKSTA:
  90                         if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
  91                                 nt_status = NT_STATUS_UNSUCCESSFUL;
  92                         }
  93                         break;
  94
  95                 case SEC_CHAN_DOMAIN: {
  96                         char *pwd;
  97                         struct dom_sid sid;
  98                         time_t pass_last_set_time;
  99
 100                         /* we need to get the sid first for the
 101                          * pdb_set_trusteddom_pw call */
 102
 103                         if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &pass_last_set_time)) {
 104                                 nt_status = NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
 105                         }
 106                         if (!pdb_set_trusteddom_pw(domain, new_trust_passwd, &sid)) {
 107                                 nt_status = NT_STATUS_INTERNAL_DB_CORRUPTION;
 108                         }
 109                         break;
 110                 }
 111                 default:
 112                         break;
 113                 }
 114         }
 115
 116         return nt_status;
 117 }