source4/dsdb/repl/drepl_service.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3    DSDB replication service
   4
   5    Copyright (C) Stefan Metzmacher 2007
   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
  22 #include "includes.h"
  23 #include "dsdb/samdb/samdb.h"
  24 #include "auth/auth.h"
  25 #include "smbd/service.h"
  26 #include "lib/events/events.h"
  27 #include "lib/messaging/irpc.h"
  28 #include "dsdb/repl/drepl_service.h"
  29 #include "lib/ldb/include/ldb_errors.h"
  30 #include "lib/util/dlinklist.h"
  31 #include "librpc/gen_ndr/ndr_misc.h"
  32 #include "librpc/gen_ndr/ndr_drsuapi.h"
  33 #include "librpc/gen_ndr/ndr_drsblobs.h"
  34
  35 static WERROR dreplsrv_init_creds(struct dreplsrv_service *service)
  36 {
  37         NTSTATUS status;
  38
  39         status = auth_system_session_info(service, &service->system_session_info);
  40         if (!NT_STATUS_IS_OK(status)) {
  41                 return ntstatus_to_werror(status);
  42         }
  43
  44         return WERR_OK;
  45 }
  46
  47 static WERROR dreplsrv_connect_samdb(struct dreplsrv_service *service)
  48 {
  49         const struct GUID *ntds_guid;
  50         struct drsuapi_DsBindInfo28 *bind_info28;
  51
  52         service->samdb = samdb_connect(service, service->system_session_info);
  53         if (!service->samdb) {
  54                 return WERR_DS_SERVICE_UNAVAILABLE;
  55         }
  56
  57         ntds_guid = samdb_ntds_objectGUID(service->samdb);
  58         if (!ntds_guid) {
  59                 return WERR_DS_SERVICE_UNAVAILABLE;
  60         }
  61
  62         service->ntds_guid = *ntds_guid;
  63
  64         bind_info28                             = &service->bind_info28;
  65         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_BASE;
  66         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
  67         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
  68         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
  69         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
  70         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
  71         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
  72         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
  73         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
  74 #if 0
  75         if (s->domain_behavior_version == 2) {
  76                 /* TODO: find out how this is really triggered! */
  77                 bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
  78         }
  79 #endif
  80         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
  81         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
  82         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
  83         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
  84         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
  85         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
  86         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
  87         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
  88         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
  89         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_00100000;
  90         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
  91         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
  92         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
  93         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
  94         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
  95         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
  96         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
  97         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
  98         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
  99 #if 0 /* we don't support XPRESS compression yet */
 100         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_XPRESS_COMPRESS;
 101 #endif
 102         /* TODO: fill in site_guid */
 103         bind_info28->site_guid                  = GUID_zero();
 104         /* TODO: find out how this is really triggered! */
 105         bind_info28->u1                         = 0;
 106         bind_info28->repl_epoch                 = 0;
 107
 108         return WERR_OK;
 109 }
 110
 111 /*
 112   startup the dsdb replicator service task
 113 */
 114 static void dreplsrv_task_init(struct task_server *task)
 115 {
 116         WERROR status;
 117         struct dreplsrv_service *service;
 118         uint32_t periodic_startup_interval;
 119
 120         switch (lp_server_role()) {
 121         case ROLE_STANDALONE:
 122                 task_server_terminate(task, "dreplsrv: no DSDB replication required in standalone configuration");
 123                 return;
 124         case ROLE_DOMAIN_MEMBER:
 125                 task_server_terminate(task, "dreplsrv: no DSDB replication required in domain member configuration");
 126                 return;
 127         case ROLE_DOMAIN_CONTROLLER:
 128                 /* Yes, we want DSDB replication */
 129                 break;
 130         }
 131
 132         task_server_set_title(task, "task[dreplsrv]");
 133
 134         service = talloc_zero(task, struct dreplsrv_service);
 135         if (!service) {
 136                 task_server_terminate(task, "dreplsrv_task_init: out of memory");
 137                 return;
 138         }
 139         service->task           = task;
 140         service->startup_time   = timeval_current();
 141         task->private           = service;
 142
 143         status = dreplsrv_init_creds(service);
 144         if (!W_ERROR_IS_OK(status)) {
 145                 task_server_terminate(task, talloc_asprintf(task,
 146                                       "dreplsrv: Failed to obtain server credentials: %s\n",
 147                                       win_errstr(status)));
 148                 return;
 149         }
 150
 151         status = dreplsrv_connect_samdb(service);
 152         if (!W_ERROR_IS_OK(status)) {
 153                 task_server_terminate(task, talloc_asprintf(task,
 154                                       "dreplsrv: Failed to connect to local samdb: %s\n",
 155                                       win_errstr(status)));
 156                 return;
 157         }
 158
 159         status = dreplsrv_load_partitions(service);
 160         if (!W_ERROR_IS_OK(status)) {
 161                 task_server_terminate(task, talloc_asprintf(task,
 162                                       "dreplsrv: Failed to load partitions: %s\n",
 163                                       win_errstr(status)));
 164                 return;
 165         }
 166
 167         periodic_startup_interval       = lp_parm_int(-1, "dreplsrv", "periodic_startup_interval", 15); /* in seconds */
 168         service->periodic.interval      = lp_parm_int(-1, "dreplsrv", "periodic_interval", 300); /* in seconds */
 169
 170         status = dreplsrv_periodic_schedule(service, periodic_startup_interval);
 171         if (!W_ERROR_IS_OK(status)) {
 172                 task_server_terminate(task, talloc_asprintf(task,
 173                                       "dreplsrv: Failed to periodic schedule: %s\n",
 174                                       win_errstr(status)));
 175                 return;
 176         }
 177
 178         irpc_add_name(task->msg_ctx, "dreplsrv");
 179 }
 180
 181 /*
 182   initialise the dsdb replicator service
 183  */
 184 static NTSTATUS dreplsrv_init(struct event_context *event_ctx, const struct model_ops *model_ops)
 185 {
 186         return task_server_startup(event_ctx, model_ops, dreplsrv_task_init);
 187 }
 188
 189 /*
 190   register ourselves as a available server
 191 */
 192 NTSTATUS server_service_drepl_init(void)
 193 {
 194         return register_server_service("drepl", dreplsrv_init);
 195 }