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 #include "param/param.h"
  35
  36 static WERROR dreplsrv_init_creds(struct dreplsrv_service *service)
  37 {
  38         NTSTATUS status;
  39
  40         status = auth_system_session_info(service, service->task->lp_ctx,
  41                                           &service->system_session_info);
  42         if (!NT_STATUS_IS_OK(status)) {
  43                 return ntstatus_to_werror(status);
  44         }
  45
  46         return WERR_OK;
  47 }
  48
  49 static WERROR dreplsrv_connect_samdb(struct dreplsrv_service *service, struct loadparm_context *lp_ctx)
  50 {
  51         const struct GUID *ntds_guid;
  52         struct drsuapi_DsBindInfo28 *bind_info28;
  53
  54         service->samdb = samdb_connect(service, service->task->event_ctx, lp_ctx, service->system_session_info);
  55         if (!service->samdb) {
  56                 return WERR_DS_UNAVAILABLE;
  57         }
  58
  59         ntds_guid = samdb_ntds_objectGUID(service->samdb);
  60         if (!ntds_guid) {
  61                 return WERR_DS_UNAVAILABLE;
  62         }
  63
  64         service->ntds_guid = *ntds_guid;
  65
  66         bind_info28                             = &service->bind_info28;
  67         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_BASE;
  68         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
  69         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
  70         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
  71         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
  72         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
  73         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
  74         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
  75         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
  76         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
  77         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
  78         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
  79         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
  80         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
  81         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
  82         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
  83         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
  84         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
  85         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
  86         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_00100000;
  87         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
  88         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
  89         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
  90         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
  91         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
  92         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
  93         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
  94         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
  95         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
  96 #if 0 /* we don't support XPRESS compression yet */
  97         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_XPRESS_COMPRESS;
  98 #endif
  99         /* TODO: fill in site_guid */
 100         bind_info28->site_guid                  = GUID_zero();
 101         /* TODO: find out how this is really triggered! */
 102         bind_info28->pid                        = 0;
 103         bind_info28->repl_epoch                 = 0;
 104
 105         return WERR_OK;
 106 }
 107
 108 /*
 109   DsReplicaSync messages from the DRSUAPI server are forwarded here
 110  */
 111 static NTSTATUS drepl_replica_sync(struct irpc_message *msg,
 112                                    struct drsuapi_DsReplicaSync *r)
 113 {
 114         struct dreplsrv_service *service = talloc_get_type(msg->private_data,
 115                                                            struct dreplsrv_service);
 116         WERROR werr;
 117         struct GUID *guid = &r->in.req.req1.naming_context->guid;
 118
 119         werr = dreplsrv_schedule_partition_pull_by_guid(service, msg, guid);
 120         if (W_ERROR_IS_OK(werr)) {
 121                 DEBUG(3,("drepl_replica_sync: forcing sync of partition %s\n",
 122                          GUID_string(msg, guid)));
 123                 dreplsrv_run_pending_ops(service);
 124         } else {
 125                 DEBUG(3,("drepl_replica_sync: failed setup of sync of partition %s - %s\n",
 126                          GUID_string(msg, guid), win_errstr(werr)));
 127                 return NT_STATUS_INTERNAL_ERROR;
 128         }
 129         return NT_STATUS_OK;
 130 }
 131
 132 /*
 133   startup the dsdb replicator service task
 134 */
 135 static void dreplsrv_task_init(struct task_server *task)
 136 {
 137         WERROR status;
 138         struct dreplsrv_service *service;
 139         uint32_t periodic_startup_interval;
 140
 141         switch (lp_server_role(task->lp_ctx)) {
 142         case ROLE_STANDALONE:
 143                 task_server_terminate(task, "dreplsrv: no DSDB replication required in standalone configuration");
 144                 return;
 145         case ROLE_DOMAIN_MEMBER:
 146                 task_server_terminate(task, "dreplsrv: no DSDB replication required in domain member configuration");
 147                 return;
 148         case ROLE_DOMAIN_CONTROLLER:
 149                 /* Yes, we want DSDB replication */
 150                 break;
 151         }
 152
 153         task_server_set_title(task, "task[dreplsrv]");
 154
 155         service = talloc_zero(task, struct dreplsrv_service);
 156         if (!service) {
 157                 task_server_terminate(task, "dreplsrv_task_init: out of memory");
 158                 return;
 159         }
 160         service->task           = task;
 161         service->startup_time   = timeval_current();
 162         task->private_data      = service;
 163
 164         status = dreplsrv_init_creds(service);
 165         if (!W_ERROR_IS_OK(status)) {
 166                 task_server_terminate(task, talloc_asprintf(task,
 167                                       "dreplsrv: Failed to obtain server credentials: %s\n",
 168                                       win_errstr(status)));
 169                 return;
 170         }
 171
 172         status = dreplsrv_connect_samdb(service, task->lp_ctx);
 173         if (!W_ERROR_IS_OK(status)) {
 174                 task_server_terminate(task, talloc_asprintf(task,
 175                                       "dreplsrv: Failed to connect to local samdb: %s\n",
 176                                       win_errstr(status)));
 177                 return;
 178         }
 179
 180         status = dreplsrv_load_partitions(service);
 181         if (!W_ERROR_IS_OK(status)) {
 182                 task_server_terminate(task, talloc_asprintf(task,
 183                                       "dreplsrv: Failed to load partitions: %s\n",
 184                                       win_errstr(status)));
 185                 return;
 186         }
 187
 188         periodic_startup_interval       = lp_parm_int(task->lp_ctx, NULL, "dreplsrv", "periodic_startup_interval", 15); /* in seconds */
 189         service->periodic.interval      = lp_parm_int(task->lp_ctx, NULL, "dreplsrv", "periodic_interval", 300); /* in seconds */
 190
 191         status = dreplsrv_periodic_schedule(service, periodic_startup_interval);
 192         if (!W_ERROR_IS_OK(status)) {
 193                 task_server_terminate(task, talloc_asprintf(task,
 194                                       "dreplsrv: Failed to periodic schedule: %s\n",
 195                                       win_errstr(status)));
 196                 return;
 197         }
 198
 199         irpc_add_name(task->msg_ctx, "dreplsrv");
 200
 201         IRPC_REGISTER(task->msg_ctx, drsuapi, DRSUAPI_DSREPLICASYNC, drepl_replica_sync, service);
 202 }
 203
 204 /*
 205   register ourselves as a available server
 206 */
 207 NTSTATUS server_service_drepl_init(void)
 208 {
 209         return register_server_service("drepl", dreplsrv_task_init);
 210 }