diff options
| -rw-r--r-- | source4/dsdb/config.mk | 3 | ||||
| -rw-r--r-- | source4/dsdb/repl/drepl_notify.c | 426 | ||||
| -rw-r--r-- | source4/dsdb/repl/drepl_out_helpers.c | 4 | ||||
| -rw-r--r-- | source4/dsdb/repl/drepl_out_pull.c | 3 | ||||
| -rw-r--r-- | source4/dsdb/repl/drepl_periodic.c | 1 | ||||
| -rw-r--r-- | source4/dsdb/repl/drepl_service.c | 10 | ||||
| -rw-r--r-- | source4/dsdb/repl/drepl_service.h | 37 |
7 files changed, 480 insertions, 4 deletions
diff --git a/source4/dsdb/config.mk b/source4/dsdb/config.mk index eb26f5b433..4150ba0d54 100644 --- a/source4/dsdb/config.mk +++ b/source4/dsdb/config.mk @@ -62,7 +62,8 @@ DREPL_SRV_OBJ_FILES = $(addprefix $(dsdbsrcdir)/repl/, \ drepl_periodic.o \ drepl_partitions.o \ drepl_out_pull.o \ - drepl_out_helpers.o) + drepl_out_helpers.o \ + drepl_notify.o) $(eval $(call proto_header_template,$(dsdbsrcdir)/repl/drepl_service_proto.h,$(DREPL_SRV_OBJ_FILES:.o=.c))) diff --git a/source4/dsdb/repl/drepl_notify.c b/source4/dsdb/repl/drepl_notify.c new file mode 100644 index 0000000000..83c6df48dc --- /dev/null +++ b/source4/dsdb/repl/drepl_notify.c @@ -0,0 +1,426 @@ +/* + Unix SMB/CIFS mplementation. + + DSDB replication service periodic notification handling + + Copyright (C) Andrew Tridgell 2009 + based on drepl_periodic + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + +*/ + +#include "includes.h" +#include "lib/events/events.h" +#include "dsdb/samdb/samdb.h" +#include "auth/auth.h" +#include "smbd/service.h" +#include "lib/messaging/irpc.h" +#include "dsdb/repl/drepl_service.h" +#include "lib/ldb/include/ldb_errors.h" +#include "../lib/util/dlinklist.h" +#include "librpc/gen_ndr/ndr_misc.h" +#include "librpc/gen_ndr/ndr_drsuapi.h" +#include "librpc/gen_ndr/ndr_drsblobs.h" +#include "libcli/composite/composite.h" + + +struct dreplsrv_op_notify_state { + struct composite_context *creq; + + struct dreplsrv_out_connection *conn; + + struct dreplsrv_drsuapi_connection *drsuapi; + + struct drsuapi_DsBindInfoCtr bind_info_ctr; + struct drsuapi_DsBind bind_r; + struct dreplsrv_notify_operation *op; +}; + +/* + receive a DsReplicaSync reply + */ +static void dreplsrv_op_notify_replica_sync_recv(struct rpc_request *req) +{ + struct dreplsrv_op_notify_state *st = talloc_get_type(req->async.private_data, + struct dreplsrv_op_notify_state); + struct composite_context *c = st->creq; + struct drsuapi_DsReplicaSync *r = talloc_get_type(req->ndr.struct_ptr, + struct drsuapi_DsReplicaSync); + + c->status = dcerpc_ndr_request_recv(req); + if (!composite_is_ok(c)) return; + + if (!W_ERROR_IS_OK(r->out.result)) { + composite_error(c, werror_to_ntstatus(r->out.result)); + return; + } + + composite_done(c); +} + +/* + send a DsReplicaSync +*/ +static void dreplsrv_op_notify_replica_sync_send(struct dreplsrv_op_notify_state *st) +{ + struct composite_context *c = st->creq; + struct dreplsrv_partition *partition = st->op->source_dsa->partition; + struct dreplsrv_drsuapi_connection *drsuapi = st->op->source_dsa->conn->drsuapi; + struct rpc_request *req; + struct drsuapi_DsReplicaSync *r; + + r = talloc_zero(st, struct drsuapi_DsReplicaSync); + if (composite_nomem(r, c)) return; + + r->in.bind_handle = &drsuapi->bind_handle; + r->in.level = 1; + r->in.req.req1.naming_context = &partition->nc; + r->in.req.req1.source_dsa_guid = st->op->service->ntds_guid; + r->in.req.req1.options = + DRSUAPI_DS_REPLICA_SYNC_ASYNCHRONOUS_OPERATION | + DRSUAPI_DS_REPLICA_SYNC_WRITEABLE | + DRSUAPI_DS_REPLICA_SYNC_ALL_SOURCES; + + + req = dcerpc_drsuapi_DsReplicaSync_send(drsuapi->pipe, r, r); + composite_continue_rpc(c, req, dreplsrv_op_notify_replica_sync_recv, st); +} + +/* + called when we have an established connection + */ +static void dreplsrv_op_notify_connect_recv(struct composite_context *creq) +{ + struct dreplsrv_op_notify_state *st = talloc_get_type(creq->async.private_data, + struct dreplsrv_op_notify_state); + struct composite_context *c = st->creq; + + c->status = dreplsrv_out_drsuapi_recv(creq); + if (!composite_is_ok(c)) return; + + dreplsrv_op_notify_replica_sync_send(st); +} + +/* + start the ReplicaSync async call + */ +static struct composite_context *dreplsrv_op_notify_send(struct dreplsrv_notify_operation *op) +{ + struct composite_context *c; + struct composite_context *creq; + struct dreplsrv_op_notify_state *st; + + c = composite_create(op, op->service->task->event_ctx); + if (c == NULL) return NULL; + + st = talloc_zero(c, struct dreplsrv_op_notify_state); + if (composite_nomem(st, c)) return c; + + st->creq = c; + st->op = op; + + creq = dreplsrv_out_drsuapi_send(op->source_dsa->conn); + composite_continue(c, creq, dreplsrv_op_notify_connect_recv, st); + + return c; +} + +static void dreplsrv_notify_del_repsTo(struct dreplsrv_notify_operation *op) +{ + uint32_t count; + struct repsFromToBlob *reps; + WERROR werr; + struct dreplsrv_service *s = op->service; + int i; + + werr = dsdb_loadreps(s->samdb, op, op->source_dsa->partition->dn, "repsTo", &reps, &count); + if (!W_ERROR_IS_OK(werr)) { + DEBUG(0,(__location__ ": Failed to load repsTo for %s\n", + ldb_dn_get_linearized(op->source_dsa->partition->dn))); + return; + } + + for (i=0; i<count; i++) { + if (GUID_compare(&reps[i].ctr.ctr1.source_dsa_obj_guid, + &op->source_dsa->repsFrom1->source_dsa_obj_guid) == 0) { + memmove(&reps[i], &reps[i+1], + sizeof(reps[i])*(count-(i+1))); + count--; + } + } + + werr = dsdb_savereps(s->samdb, op, op->source_dsa->partition->dn, "repsTo", reps, count); + if (!W_ERROR_IS_OK(werr)) { + DEBUG(0,(__location__ ": Failed to save repsTo for %s\n", + ldb_dn_get_linearized(op->source_dsa->partition->dn))); + return; + } +} + +/* + called when a notify operation has completed + */ +static void dreplsrv_notify_op_callback(struct dreplsrv_notify_operation *op) +{ + NTSTATUS status; + struct dreplsrv_service *s = op->service; + + status = composite_wait(op->creq); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(0,("dreplsrv_notify: Failed to send DsReplicaSync to %s - %s\n", + op->source_dsa->repsFrom1->other_info->dns_name, + nt_errstr(status))); + } else { + DEBUG(2,("dreplsrv_notify: DsReplicaSync OK for %s\n", + op->source_dsa->repsFrom1->other_info->dns_name)); + op->source_dsa->notify_uSN = op->uSN; + /* delete the repsTo for this replication partner in the + partition, as we have successfully told him to sync */ + dreplsrv_notify_del_repsTo(op); + } + talloc_free(op->creq); + + talloc_free(op); + s->ops.n_current = NULL; + dreplsrv_notify_run_ops(s); +} + + +static void dreplsrv_notify_op_callback_creq(struct composite_context *creq) +{ + struct dreplsrv_notify_operation *op = talloc_get_type(creq->async.private_data, + struct dreplsrv_notify_operation); + dreplsrv_notify_op_callback(op); +} + +/* + run any pending replica sync calls + */ +void dreplsrv_notify_run_ops(struct dreplsrv_service *s) +{ + struct dreplsrv_notify_operation *op; + + if (s->ops.n_current || s->ops.current) { + /* if there's still one running, we're done */ + return; + } + + if (!s->ops.notifies) { + /* if there're no pending operations, we're done */ + return; + } + + op = s->ops.notifies; + s->ops.n_current = op; + DLIST_REMOVE(s->ops.notifies, op); + + op->creq = dreplsrv_op_notify_send(op); + if (!op->creq) { + dreplsrv_notify_op_callback(op); + return; + } + + op->creq->async.fn = dreplsrv_notify_op_callback_creq; + op->creq->async.private_data = op; +} + + +/* + find a source_dsa for a given guid + */ +static struct dreplsrv_partition_source_dsa *dreplsrv_find_source_dsa(struct dreplsrv_partition *p, + struct GUID *guid) +{ + struct dreplsrv_partition_source_dsa *s; + + for (s=p->sources; s; s=s->next) { + if (GUID_compare(&s->repsFrom1->source_dsa_obj_guid, guid) == 0) { + return s; + } + } + return NULL; +} + + +/* + schedule a replicaSync message + */ +static WERROR dreplsrv_schedule_notify_sync(struct dreplsrv_service *service, + struct dreplsrv_partition *p, + struct repsFromToBlob *reps, + TALLOC_CTX *mem_ctx, + uint64_t uSN) +{ + struct dreplsrv_notify_operation *op; + struct dreplsrv_partition_source_dsa *s; + + s = dreplsrv_find_source_dsa(p, &reps->ctr.ctr1.source_dsa_obj_guid); + if (s == NULL) { + DEBUG(0,(__location__ ": Unable to find source_dsa for %s\n", + GUID_string(mem_ctx, &reps->ctr.ctr1.source_dsa_obj_guid))); + return WERR_DS_UNAVAILABLE; + } + + op = talloc_zero(mem_ctx, struct dreplsrv_notify_operation); + W_ERROR_HAVE_NO_MEMORY(op); + + op->service = service; + op->source_dsa = s; + op->uSN = uSN; + + DLIST_ADD_END(service->ops.notifies, op, struct dreplsrv_notify_operation *); + talloc_steal(service, op); + return WERR_OK; +} + +/* + see if a partition has a hugher uSN than what is in the repsTo and + if so then send a DsReplicaSync + */ +static WERROR dreplsrv_notify_check(struct dreplsrv_service *s, + struct dreplsrv_partition *p, + TALLOC_CTX *mem_ctx) +{ + uint32_t count; + struct repsFromToBlob *reps; + WERROR werr; + uint64_t uSN; + int ret, i; + + werr = dsdb_loadreps(s->samdb, mem_ctx, p->dn, "repsTo", &reps, &count); + if (!W_ERROR_IS_OK(werr)) { + DEBUG(0,(__location__ ": Failed to load repsTo for %s\n", + ldb_dn_get_linearized(p->dn))); + return werr; + } + + /* loads the partition uSNHighest */ + ret = dsdb_load_partition_usn(s->samdb, p->dn, &uSN); + if (ret != LDB_SUCCESS || uSN == 0) { + /* nothing to do */ + return WERR_OK; + } + + /* see if any of our partners need some of our objects */ + for (i=0; i<count; i++) { + struct dreplsrv_partition_source_dsa *sdsa; + sdsa = dreplsrv_find_source_dsa(p, &reps[i].ctr.ctr1.source_dsa_obj_guid); + if (sdsa == NULL) continue; + if (sdsa->notify_uSN < uSN) { + /* we need to tell this partner to replicate + with us */ + werr = dreplsrv_schedule_notify_sync(s, p, &reps[i], mem_ctx, uSN); + if (!W_ERROR_IS_OK(werr)) { + DEBUG(0,(__location__ ": Failed to setup notify to %s for %s\n", + reps[i].ctr.ctr1.other_info->dns_name, + ldb_dn_get_linearized(p->dn))); + return werr; + } + } + } + + + return WERR_OK; +} + +/* + see if any of the partitions have changed, and if so then send a + DsReplicaSync to all the replica partners in the repsTo object + */ +static WERROR dreplsrv_notify_check_all(struct dreplsrv_service *s, TALLOC_CTX *mem_ctx) +{ + WERROR status; + struct dreplsrv_partition *p; + + for (p = s->partitions; p; p = p->next) { + status = dreplsrv_notify_check(s, p, mem_ctx); + W_ERROR_NOT_OK_RETURN(status); + } + + return WERR_OK; +} + +static void dreplsrv_notify_run(struct dreplsrv_service *service); + +static void dreplsrv_notify_handler_te(struct tevent_context *ev, struct tevent_timer *te, + struct timeval t, void *ptr) +{ + struct dreplsrv_service *service = talloc_get_type(ptr, struct dreplsrv_service); + WERROR status; + + service->notify.te = NULL; + + dreplsrv_notify_run(service); + + status = dreplsrv_notify_schedule(service, service->notify.interval); + if (!W_ERROR_IS_OK(status)) { + task_server_terminate(service->task, win_errstr(status)); + return; + } +} + +WERROR dreplsrv_notify_schedule(struct dreplsrv_service *service, uint32_t next_interval) +{ + TALLOC_CTX *tmp_mem; + struct tevent_timer *new_te; + struct timeval next_time; + + /* prevent looping */ + if (next_interval == 0) next_interval = 1; + + next_time = timeval_current_ofs(next_interval, 50); + + if (service->notify.te) { + /* + * if the timestamp of the new event is higher, + * as current next we don't need to reschedule + */ + if (timeval_compare(&next_time, &service->notify.next_event) > 0) { + return WERR_OK; + } + } + + /* reset the next scheduled timestamp */ + service->notify.next_event = next_time; + + new_te = event_add_timed(service->task->event_ctx, service, + service->notify.next_event, + dreplsrv_notify_handler_te, service); + W_ERROR_HAVE_NO_MEMORY(new_te); + + tmp_mem = talloc_new(service); + DEBUG(2,("dreplsrv_notify_schedule(%u) %sscheduled for: %s\n", + next_interval, + (service->notify.te?"re":""), + nt_time_string(tmp_mem, timeval_to_nttime(&next_time)))); + talloc_free(tmp_mem); + + talloc_free(service->notify.te); + service->notify.te = new_te; + + return WERR_OK; +} + +static void dreplsrv_notify_run(struct dreplsrv_service *service) +{ + TALLOC_CTX *mem_ctx; + + mem_ctx = talloc_new(service); + dreplsrv_notify_check_all(service, mem_ctx); + talloc_free(mem_ctx); + + dreplsrv_run_pending_ops(service); + dreplsrv_notify_run_ops(service); +} diff --git a/source4/dsdb/repl/drepl_out_helpers.c b/source4/dsdb/repl/drepl_out_helpers.c index e90f2783b1..168aacdde9 100644 --- a/source4/dsdb/repl/drepl_out_helpers.c +++ b/source4/dsdb/repl/drepl_out_helpers.c @@ -48,7 +48,7 @@ struct dreplsrv_out_drsuapi_state { static void dreplsrv_out_drsuapi_connect_recv(struct composite_context *creq); -static struct composite_context *dreplsrv_out_drsuapi_send(struct dreplsrv_out_connection *conn) +struct composite_context *dreplsrv_out_drsuapi_send(struct dreplsrv_out_connection *conn) { struct composite_context *c; struct composite_context *creq; @@ -165,7 +165,7 @@ static void dreplsrv_out_drsuapi_bind_recv(struct rpc_request *req) composite_done(c); } -static NTSTATUS dreplsrv_out_drsuapi_recv(struct composite_context *c) +NTSTATUS dreplsrv_out_drsuapi_recv(struct composite_context *c) { NTSTATUS status; struct dreplsrv_out_drsuapi_state *st = talloc_get_type(c->private_data, diff --git a/source4/dsdb/repl/drepl_out_pull.c b/source4/dsdb/repl/drepl_out_pull.c index 54dbd29730..b073d265c3 100644 --- a/source4/dsdb/repl/drepl_out_pull.c +++ b/source4/dsdb/repl/drepl_out_pull.c @@ -125,6 +125,7 @@ done: talloc_free(op); s->ops.current = NULL; dreplsrv_run_pending_ops(s); + dreplsrv_notify_run_ops(s); } static void dreplsrv_pending_op_callback_creq(struct composite_context *creq) @@ -140,7 +141,7 @@ void dreplsrv_run_pending_ops(struct dreplsrv_service *s) time_t t; NTTIME now; - if (s->ops.current) { + if (s->ops.current || s->ops.n_current) { /* if there's still one running, we're done */ return; } diff --git a/source4/dsdb/repl/drepl_periodic.c b/source4/dsdb/repl/drepl_periodic.c index 2cfcb310dc..377cecbe99 100644 --- a/source4/dsdb/repl/drepl_periodic.c +++ b/source4/dsdb/repl/drepl_periodic.c @@ -110,4 +110,5 @@ static void dreplsrv_periodic_run(struct dreplsrv_service *service) dreplsrv_refresh_partitions(service); dreplsrv_run_pending_ops(service); + dreplsrv_notify_run_ops(service); } diff --git a/source4/dsdb/repl/drepl_service.c b/source4/dsdb/repl/drepl_service.c index eb49da3d41..cb415b65e6 100644 --- a/source4/dsdb/repl/drepl_service.c +++ b/source4/dsdb/repl/drepl_service.c @@ -196,6 +196,16 @@ static void dreplsrv_task_init(struct task_server *task) return; } + service->notify.interval = lp_parm_int(task->lp_ctx, NULL, "dreplsrv", + "notify_interval", 5); /* in seconds */ + status = dreplsrv_notify_schedule(service, service->notify.interval); + if (!W_ERROR_IS_OK(status)) { + task_server_terminate(task, talloc_asprintf(task, + "dreplsrv: Failed to setup notify schedule: %s\n", + win_errstr(status))); + return; + } + irpc_add_name(task->msg_ctx, "dreplsrv"); IRPC_REGISTER(task->msg_ctx, drsuapi, DRSUAPI_DSREPLICASYNC, drepl_replica_sync, service); diff --git a/source4/dsdb/repl/drepl_service.h b/source4/dsdb/repl/drepl_service.h index a9eea30719..0f9684fa78 100644 --- a/source4/dsdb/repl/drepl_service.h +++ b/source4/dsdb/repl/drepl_service.h @@ -69,6 +69,9 @@ struct dreplsrv_partition_source_dsa { struct repsFromToBlob _repsFromBlob; struct repsFromTo1 *repsFrom1; + /* the last uSN when we sent a notify */ + uint64_t notify_uSN; + /* the reference to the source_dsa and its outgoing connection */ struct dreplsrv_out_connection *conn; }; @@ -107,6 +110,17 @@ struct dreplsrv_out_operation { struct composite_context *creq; }; +struct dreplsrv_notify_operation { + struct dreplsrv_notify_operation *prev, *next; + + struct dreplsrv_service *service; + uint64_t uSN; + + struct dreplsrv_partition_source_dsa *source_dsa; + + struct composite_context *creq; +}; + struct dreplsrv_service { /* the whole drepl service is in one task */ struct task_server *task; @@ -150,6 +164,23 @@ struct dreplsrv_service { struct tevent_timer *te; } periodic; + /* some stuff for notify processing */ + struct { + /* + * the interval between notify runs + */ + uint32_t interval; + + /* + * the timestamp for the next event, + * this is the timstamp passed to event_add_timed() + */ + struct timeval next_event; + + /* here we have a reference to the timed event the schedules the notifies */ + struct tevent_timer *te; + } notify; + /* * the list of partitions we need to replicate */ @@ -166,6 +197,12 @@ struct dreplsrv_service { /* the list of pending operations */ struct dreplsrv_out_operation *pending; + + /* the list of pending notify operations */ + struct dreplsrv_notify_operation *notifies; + + /* an active notify operation */ + struct dreplsrv_notify_operation *n_current; } ops; }; |