34853c85f92ac6d21fca2f5a85d9043fdeb06cb0
[ira/wip.git] / 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         struct GUID *guid = &r->in.req.req1.naming_context->guid;
117
118         r->out.result = dreplsrv_schedule_partition_pull_by_guid(service, msg, guid);
119         if (W_ERROR_IS_OK(r->out.result)) {
120                 DEBUG(3,("drepl_replica_sync: forcing sync of partition %s\n",
121                          GUID_string(msg, guid)));
122                 dreplsrv_run_pending_ops(service);
123         } else {
124                 DEBUG(3,("drepl_replica_sync: failed setup of sync of partition %s - %s\n",
125                          GUID_string(msg, guid), 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
139         switch (lp_server_role(task->lp_ctx)) {
140         case ROLE_STANDALONE:
141                 task_server_terminate(task, "dreplsrv: no DSDB replication required in standalone configuration", 
142                                       false);
143                 return;
144         case ROLE_DOMAIN_MEMBER:
145                 task_server_terminate(task, "dreplsrv: no DSDB replication required in domain member configuration", 
146                                       false);
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", true);
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)), true);
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)), true);
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)), true);
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)), true);
196                 return;
197         }
198
199         service->notify.interval = lp_parm_int(task->lp_ctx, NULL, "dreplsrv", 
200                                                "notify_interval", 5); /* in seconds */
201         status = dreplsrv_notify_schedule(service, service->notify.interval);
202         if (!W_ERROR_IS_OK(status)) {
203                 task_server_terminate(task, talloc_asprintf(task,
204                                       "dreplsrv: Failed to setup notify schedule: %s\n",
205                                                             win_errstr(status)), true);
206                 return;
207         }
208
209         irpc_add_name(task->msg_ctx, "dreplsrv");
210
211         IRPC_REGISTER(task->msg_ctx, drsuapi, DRSUAPI_DSREPLICASYNC, drepl_replica_sync, service);
212 }
213
214 /*
215   register ourselves as a available server
216 */
217 NTSTATUS server_service_drepl_init(void)
218 {
219         return register_server_service("drepl", dreplsrv_task_init);
220 }