source4/dsdb/repl/drepl_extended.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3
   4    DSDB replication service - extended operation code
   5
   6    Copyright (C) Andrew Tridgell 2010
   7    Copyright (C) Andrew Bartlett 2010
   8    Copyright (C) Nadezhda Ivanova 2010
   9
  10    based on drepl_notify.c
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 */
  26
  27 #include "includes.h"
  28 #include "ldb_module.h"
  29 #include "dsdb/samdb/samdb.h"
  30 #include "smbd/service.h"
  31 #include "dsdb/repl/drepl_service.h"
  32 #include "param/param.h"
  33
  34
  35 /*
  36   create the role owner source dsa structure
  37
  38   nc_dn: the DN of the subtree being replicated
  39   source_dsa_dn: the DN of the server that we are replicating from
  40  */
  41 static WERROR drepl_create_extended_source_dsa(struct dreplsrv_service *service,
  42                                                struct ldb_dn *nc_dn,
  43                                                struct ldb_dn *source_dsa_dn,
  44                                                struct dreplsrv_partition_source_dsa **_sdsa)
  45 {
  46         struct dreplsrv_partition_source_dsa *sdsa;
  47         struct ldb_context *ldb = service->samdb;
  48         int ret;
  49         WERROR werr;
  50
  51         sdsa = talloc_zero(service, struct dreplsrv_partition_source_dsa);
  52         W_ERROR_HAVE_NO_MEMORY(sdsa);
  53
  54         sdsa->partition = talloc_zero(sdsa, struct dreplsrv_partition);
  55         if (!sdsa->partition) {
  56                 talloc_free(sdsa);
  57                 return WERR_NOMEM;
  58         }
  59
  60         sdsa->partition->dn = ldb_dn_copy(sdsa->partition, nc_dn);
  61         if (!sdsa->partition->dn) {
  62                 talloc_free(sdsa);
  63                 return WERR_NOMEM;
  64         }
  65         sdsa->partition->nc.dn = ldb_dn_alloc_linearized(sdsa->partition, nc_dn);
  66         if (!sdsa->partition->nc.dn) {
  67                 talloc_free(sdsa);
  68                 return WERR_NOMEM;
  69         }
  70         ret = dsdb_find_guid_by_dn(ldb, nc_dn, &sdsa->partition->nc.guid);
  71         if (ret != LDB_SUCCESS) {
  72                 DEBUG(0,(__location__ ": Failed to find GUID for %s\n",
  73                          ldb_dn_get_linearized(nc_dn)));
  74                 talloc_free(sdsa);
  75                 return WERR_DS_DRA_INTERNAL_ERROR;
  76         }
  77
  78         sdsa->repsFrom1 = &sdsa->_repsFromBlob.ctr.ctr1;
  79         ret = dsdb_find_guid_by_dn(ldb, source_dsa_dn, &sdsa->repsFrom1->source_dsa_obj_guid);
  80         if (ret != LDB_SUCCESS) {
  81                 DEBUG(0,(__location__ ": Failed to find objectGUID for %s\n",
  82                          ldb_dn_get_linearized(source_dsa_dn)));
  83                 talloc_free(sdsa);
  84                 return WERR_DS_DRA_INTERNAL_ERROR;
  85         }
  86
  87         sdsa->repsFrom1->other_info = talloc_zero(sdsa, struct repsFromTo1OtherInfo);
  88         if (!sdsa->repsFrom1->other_info) {
  89                 talloc_free(sdsa);
  90                 return WERR_NOMEM;
  91         }
  92
  93         sdsa->repsFrom1->other_info->dns_name =
  94                 talloc_asprintf(sdsa->repsFrom1->other_info, "%s._msdcs.%s",
  95                                 GUID_string(sdsa->repsFrom1->other_info, &sdsa->repsFrom1->source_dsa_obj_guid),
  96                                 lpcfg_dnsdomain(service->task->lp_ctx));
  97         if (!sdsa->repsFrom1->other_info->dns_name) {
  98                 talloc_free(sdsa);
  99                 return WERR_NOMEM;
 100         }
 101
 102
 103         werr = dreplsrv_out_connection_attach(service, sdsa->repsFrom1, &sdsa->conn);
 104         if (!W_ERROR_IS_OK(werr)) {
 105                 DEBUG(0,(__location__ ": Failed to attach connection to %s\n",
 106                          ldb_dn_get_linearized(nc_dn)));
 107                 talloc_free(sdsa);
 108                 return werr;
 109         }
 110
 111         *_sdsa = sdsa;
 112         return WERR_OK;
 113 }
 114
 115 struct extended_op_data {
 116         dreplsrv_fsmo_callback_t callback;
 117         void *callback_data;
 118         struct dreplsrv_partition_source_dsa *sdsa;
 119 };
 120
 121 /*
 122   called when an extended op finishes
 123  */
 124 static void extended_op_callback(struct dreplsrv_service *service,
 125                                  WERROR err,
 126                                  enum drsuapi_DsExtendedError exop_error,
 127                                  void *cb_data)
 128 {
 129         struct extended_op_data *data = talloc_get_type_abort(cb_data, struct extended_op_data);
 130         talloc_free(data->sdsa);
 131         data->callback(service, err, exop_error, data->callback_data);
 132         talloc_free(data);
 133 }
 134
 135 /*
 136   schedule a getncchanges request to the role owner for an extended operation
 137  */
 138 WERROR drepl_request_extended_op(struct dreplsrv_service *service,
 139                                  struct ldb_dn *role_owner_dn,
 140                                  struct ldb_dn *fsmo_role_dn,
 141                                  enum drsuapi_DsExtendedOperation extended_op,
 142                                  uint64_t fsmo_info,
 143                                  dreplsrv_fsmo_callback_t callback,
 144                                  void *callback_data)
 145 {
 146         WERROR werr;
 147         struct extended_op_data *data;
 148         struct dreplsrv_partition_source_dsa *sdsa;
 149
 150         werr = drepl_create_extended_source_dsa(service, role_owner_dn, fsmo_role_dn, &sdsa);
 151         W_ERROR_NOT_OK_RETURN(werr);
 152
 153         data = talloc(service, struct extended_op_data);
 154         W_ERROR_HAVE_NO_MEMORY(data);
 155
 156         data->callback = callback;
 157         data->callback_data = callback_data;
 158         data->sdsa = sdsa;
 159
 160         werr = dreplsrv_schedule_partition_pull_source(service, sdsa,
 161                                                        extended_op, fsmo_info,
 162                                                        extended_op_callback, data);
 163         if (!W_ERROR_IS_OK(werr)) {
 164                 talloc_free(sdsa);
 165                 talloc_free(data);
 166         }
 167         return werr;
 168 }