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         service->system_session_info = system_session(service->task->lp_ctx);
  39         if (service->system_session_info == NULL) {
  40                 return WERR_NOMEM;
  41         }
  42
  43         return WERR_OK;
  44 }
  45
  46 static WERROR dreplsrv_connect_samdb(struct dreplsrv_service *service, struct loadparm_context *lp_ctx)
  47 {
  48         const struct GUID *ntds_guid;
  49         struct drsuapi_DsBindInfo28 *bind_info28;
  50
  51         service->samdb = samdb_connect(service, service->task->event_ctx, lp_ctx, service->system_session_info);
  52         if (!service->samdb) {
  53                 return WERR_DS_UNAVAILABLE;
  54         }
  55
  56         ntds_guid = samdb_ntds_objectGUID(service->samdb);
  57         if (!ntds_guid) {
  58                 return WERR_DS_UNAVAILABLE;
  59         }
  60
  61         service->ntds_guid = *ntds_guid;
  62
  63         bind_info28                             = &service->bind_info28;
  64         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_BASE;
  65         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
  66         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
  67         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
  68         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
  69         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
  70         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
  71         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
  72         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
  73         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
  74         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
  75         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
  76         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
  77         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
  78         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
  79         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
  80         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
  81         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
  82         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
  83         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V5;
  84         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
  85         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
  86         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
  87         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
  88         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
  89         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
  90         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
  91         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
  92         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
  93 #if 0 /* we don't support XPRESS compression yet */
  94         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_XPRESS_COMPRESS;
  95 #endif
  96         /* TODO: fill in site_guid */
  97         bind_info28->site_guid                  = GUID_zero();
  98         /* TODO: find out how this is really triggered! */
  99         bind_info28->pid                        = 0;
 100         bind_info28->repl_epoch                 = 0;
 101
 102         return WERR_OK;
 103 }
 104
 105 /*
 106   DsReplicaSync messages from the DRSUAPI server are forwarded here
 107  */
 108 static NTSTATUS drepl_replica_sync(struct irpc_message *msg,
 109                                    struct drsuapi_DsReplicaSync *r)
 110 {
 111         struct dreplsrv_service *service = talloc_get_type(msg->private_data,
 112                                                            struct dreplsrv_service);
 113         struct drsuapi_DsReplicaObjectIdentifier *nc = r->in.req->req1.naming_context;
 114
 115         r->out.result = dreplsrv_schedule_partition_pull_by_nc(service, msg, nc);
 116         if (W_ERROR_IS_OK(r->out.result)) {
 117                 DEBUG(3,("drepl_replica_sync: forcing sync of partition (%s, %s)\n",
 118                          GUID_string(msg, &nc->guid),
 119                          nc->dn));
 120                 dreplsrv_run_pending_ops(service);
 121         } else {
 122                 DEBUG(3,("drepl_replica_sync: failed setup of sync of partition (%s, %s) - %s\n",
 123                          GUID_string(msg, &nc->guid),
 124                          nc->dn,
 125                          win_errstr(r->out.result)));
 126         }
 127         return NT_STATUS_OK;
 128 }
 129
 130 /*
 131   startup the dsdb replicator service task
 132 */
 133 static void dreplsrv_task_init(struct task_server *task)
 134 {
 135         WERROR status;
 136         struct dreplsrv_service *service;
 137         uint32_t periodic_startup_interval;
 138         bool am_rodc;
 139         int ret;
 140
 141         switch (lpcfg_server_role(task->lp_ctx)) {
 142         case ROLE_STANDALONE:
 143                 task_server_terminate(task, "dreplsrv: no DSDB replication required in standalone configuration",
 144                                       false);
 145                 return;
 146         case ROLE_DOMAIN_MEMBER:
 147                 task_server_terminate(task, "dreplsrv: no DSDB replication required in domain member configuration",
 148                                       false);
 149                 return;
 150         case ROLE_DOMAIN_CONTROLLER:
 151                 /* Yes, we want DSDB replication */
 152                 break;
 153         }
 154
 155         task_server_set_title(task, "task[dreplsrv]");
 156
 157         service = talloc_zero(task, struct dreplsrv_service);
 158         if (!service) {
 159                 task_server_terminate(task, "dreplsrv_task_init: out of memory", true);
 160                 return;
 161         }
 162         service->task           = task;
 163         service->startup_time   = timeval_current();
 164         task->private_data      = service;
 165
 166         status = dreplsrv_init_creds(service);
 167         if (!W_ERROR_IS_OK(status)) {
 168                 task_server_terminate(task, talloc_asprintf(task,
 169                                       "dreplsrv: Failed to obtain server credentials: %s\n",
 170                                                             win_errstr(status)), true);
 171                 return;
 172         }
 173
 174         status = dreplsrv_connect_samdb(service, task->lp_ctx);
 175         if (!W_ERROR_IS_OK(status)) {
 176                 task_server_terminate(task, talloc_asprintf(task,
 177                                       "dreplsrv: Failed to connect to local samdb: %s\n",
 178                                                             win_errstr(status)), true);
 179                 return;
 180         }
 181
 182         status = dreplsrv_load_partitions(service);
 183         if (!W_ERROR_IS_OK(status)) {
 184                 task_server_terminate(task, talloc_asprintf(task,
 185                                       "dreplsrv: Failed to load partitions: %s\n",
 186                                                             win_errstr(status)), true);
 187                 return;
 188         }
 189
 190         periodic_startup_interval       = lpcfg_parm_int(task->lp_ctx, NULL, "dreplsrv", "periodic_startup_interval", 15); /* in seconds */
 191         service->periodic.interval      = lpcfg_parm_int(task->lp_ctx, NULL, "dreplsrv", "periodic_interval", 300); /* in seconds */
 192
 193         status = dreplsrv_periodic_schedule(service, periodic_startup_interval);
 194         if (!W_ERROR_IS_OK(status)) {
 195                 task_server_terminate(task, talloc_asprintf(task,
 196                                       "dreplsrv: Failed to periodic schedule: %s\n",
 197                                                             win_errstr(status)), true);
 198                 return;
 199         }
 200
 201         /* if we are a RODC then we do not send DSReplicaSync*/
 202         ret = samdb_rodc(service->samdb, &am_rodc);
 203         if (ret == LDB_SUCCESS && !am_rodc) {
 204                 service->notify.interval = lpcfg_parm_int(task->lp_ctx, NULL, "dreplsrv",
 205                                                            "notify_interval", 5); /* in seconds */
 206                 status = dreplsrv_notify_schedule(service, service->notify.interval);
 207                 if (!W_ERROR_IS_OK(status)) {
 208                         task_server_terminate(task, talloc_asprintf(task,
 209                                                   "dreplsrv: Failed to setup notify schedule: %s\n",
 210                                                                         win_errstr(status)), true);
 211                         return;
 212                 }
 213         }
 214
 215         irpc_add_name(task->msg_ctx, "dreplsrv");
 216
 217         IRPC_REGISTER(task->msg_ctx, drsuapi, DRSUAPI_DSREPLICASYNC, drepl_replica_sync, service);
 218         messaging_register(task->msg_ctx, service, MSG_DREPL_ALLOCATE_RID, dreplsrv_allocate_rid);
 219 }
 220
 221 /*
 222   register ourselves as a available server
 223 */
 224 NTSTATUS server_service_drepl_init(void)
 225 {
 226         return register_server_service("drepl", dreplsrv_task_init);
 227 }