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->system_session_info);
  41         if (!NT_STATUS_IS_OK(status)) {
  42                 return ntstatus_to_werror(status);
  43         }
  44
  45         return WERR_OK;
  46 }
  47
  48 static WERROR dreplsrv_connect_samdb(struct dreplsrv_service *service)
  49 {
  50         const struct GUID *ntds_guid;
  51         struct drsuapi_DsBindInfo28 *bind_info28;
  52
  53         service->samdb = samdb_connect(service, service->system_session_info);
  54         if (!service->samdb) {
  55                 return WERR_DS_SERVICE_UNAVAILABLE;
  56         }
  57
  58         ntds_guid = samdb_ntds_objectGUID(service->samdb);
  59         if (!ntds_guid) {
  60                 return WERR_DS_SERVICE_UNAVAILABLE;
  61         }
  62
  63         service->ntds_guid = *ntds_guid;
  64
  65         bind_info28                             = &service->bind_info28;
  66         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_BASE;
  67         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
  68         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
  69         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
  70         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
  71         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
  72         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
  73         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
  74         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
  75 #if 0
  76         if (s->domain_behavior_version == 2) {
  77                 /* TODO: find out how this is really triggered! */
  78                 bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
  79         }
  80 #endif
  81         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
  82         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
  83         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
  84         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
  85         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
  86         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
  87         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
  88         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
  89         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
  90         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_00100000;
  91         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
  92         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
  93         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
  94         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
  95         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
  96         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
  97         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
  98         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
  99         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
 100 #if 0 /* we don't support XPRESS compression yet */
 101         bind_info28->supported_extensions       |= DRSUAPI_SUPPORTED_EXTENSION_XPRESS_COMPRESS;
 102 #endif
 103         /* TODO: fill in site_guid */
 104         bind_info28->site_guid                  = GUID_zero();
 105         /* TODO: find out how this is really triggered! */
 106         bind_info28->u1                         = 0;
 107         bind_info28->repl_epoch                 = 0;
 108
 109         return WERR_OK;
 110 }
 111
 112 /*
 113   startup the dsdb replicator service task
 114 */
 115 static void dreplsrv_task_init(struct task_server *task)
 116 {
 117         WERROR status;
 118         struct dreplsrv_service *service;
 119         uint32_t periodic_startup_interval;
 120
 121         switch (lp_server_role(global_loadparm)) {
 122         case ROLE_STANDALONE:
 123                 task_server_terminate(task, "dreplsrv: no DSDB replication required in standalone configuration");
 124                 return;
 125         case ROLE_DOMAIN_MEMBER:
 126                 task_server_terminate(task, "dreplsrv: no DSDB replication required in domain member configuration");
 127                 return;
 128         case ROLE_DOMAIN_CONTROLLER:
 129                 /* Yes, we want DSDB replication */
 130                 break;
 131         }
 132
 133         task_server_set_title(task, "task[dreplsrv]");
 134
 135         service = talloc_zero(task, struct dreplsrv_service);
 136         if (!service) {
 137                 task_server_terminate(task, "dreplsrv_task_init: out of memory");
 138                 return;
 139         }
 140         service->task           = task;
 141         service->startup_time   = timeval_current();
 142         task->private           = service;
 143
 144         status = dreplsrv_init_creds(service);
 145         if (!W_ERROR_IS_OK(status)) {
 146                 task_server_terminate(task, talloc_asprintf(task,
 147                                       "dreplsrv: Failed to obtain server credentials: %s\n",
 148                                       win_errstr(status)));
 149                 return;
 150         }
 151
 152         status = dreplsrv_connect_samdb(service);
 153         if (!W_ERROR_IS_OK(status)) {
 154                 task_server_terminate(task, talloc_asprintf(task,
 155                                       "dreplsrv: Failed to connect to local samdb: %s\n",
 156                                       win_errstr(status)));
 157                 return;
 158         }
 159
 160         status = dreplsrv_load_partitions(service);
 161         if (!W_ERROR_IS_OK(status)) {
 162                 task_server_terminate(task, talloc_asprintf(task,
 163                                       "dreplsrv: Failed to load partitions: %s\n",
 164                                       win_errstr(status)));
 165                 return;
 166         }
 167
 168         periodic_startup_interval       = lp_parm_int(global_loadparm, NULL, "dreplsrv", "periodic_startup_interval", 15); /* in seconds */
 169         service->periodic.interval      = lp_parm_int(global_loadparm, NULL, "dreplsrv", "periodic_interval", 300); /* in seconds */
 170
 171         status = dreplsrv_periodic_schedule(service, periodic_startup_interval);
 172         if (!W_ERROR_IS_OK(status)) {
 173                 task_server_terminate(task, talloc_asprintf(task,
 174                                       "dreplsrv: Failed to periodic schedule: %s\n",
 175                                       win_errstr(status)));
 176                 return;
 177         }
 178
 179         irpc_add_name(task->msg_ctx, "dreplsrv");
 180 }
 181
 182 /*
 183   initialise the dsdb replicator service
 184  */
 185 static NTSTATUS dreplsrv_init(struct event_context *event_ctx, const struct model_ops *model_ops)
 186 {
 187         return task_server_startup(event_ctx, model_ops, dreplsrv_task_init);
 188 }
 189
 190 /*
 191   register ourselves as a available server
 192 */
 193 NTSTATUS server_service_drepl_init(void)
 194 {
 195         return register_server_service("drepl", dreplsrv_init);
 196 }