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/*
Unix SMB/CIFS mplementation.
DSDB replication service outgoing Pull-Replication
Copyright (C) Stefan Metzmacher 2007
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 "dsdb/samdb/samdb.h"
#include "auth/auth.h"
#include "smbd/service.h"
#include "lib/events/events.h"
#include "dsdb/repl/drepl_service.h"
#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"
#include "libcli/security/security.h"
/*
update repsFrom/repsTo error information
*/
void drepl_reps_update(struct dreplsrv_service *s, const char *reps_attr,
struct ldb_dn *dn,
struct GUID *source_dsa_obj_guid, WERROR status)
{
struct repsFromToBlob *reps;
uint32_t count, i;
WERROR werr;
TALLOC_CTX *tmp_ctx = talloc_new(s);
time_t t;
NTTIME now;
t = time(NULL);
unix_to_nt_time(&now, t);
werr = dsdb_loadreps(s->samdb, tmp_ctx, dn, reps_attr, &reps, &count);
if (!W_ERROR_IS_OK(werr)) {
talloc_free(tmp_ctx);
return;
}
for (i=0; i<count; i++) {
if (GUID_compare(source_dsa_obj_guid,
&reps[i].ctr.ctr1.source_dsa_obj_guid) == 0) {
break;
}
}
if (i == count) {
/* no record to update */
talloc_free(tmp_ctx);
return;
}
/* only update the status fields */
reps[i].ctr.ctr1.last_attempt = now;
reps[i].ctr.ctr1.result_last_attempt = status;
if (W_ERROR_IS_OK(status)) {
reps[i].ctr.ctr1.last_success = now;
reps[i].ctr.ctr1.consecutive_sync_failures = 0;
} else {
reps[i].ctr.ctr1.consecutive_sync_failures++;
}
werr = dsdb_savereps(s->samdb, tmp_ctx, dn, reps_attr, reps, count);
if (!W_ERROR_IS_OK(werr)) {
DEBUG(2,("drepl_reps_update: Failed to save %s for %s: %s\n",
reps_attr, ldb_dn_get_linearized(dn), win_errstr(werr)));
}
talloc_free(tmp_ctx);
}
WERROR dreplsrv_schedule_partition_pull_source(struct dreplsrv_service *s,
struct dreplsrv_partition_source_dsa *source,
enum drsuapi_DsExtendedOperation extended_op,
uint64_t fsmo_info,
dreplsrv_extended_callback_t callback,
void *cb_data)
{
struct dreplsrv_out_operation *op;
op = talloc_zero(s, struct dreplsrv_out_operation);
W_ERROR_HAVE_NO_MEMORY(op);
op->service = s;
op->source_dsa = source;
op->extended_op = extended_op;
op->fsmo_info = fsmo_info;
op->callback = callback;
op->cb_data = cb_data;
op->schedule_time = time(NULL);
DLIST_ADD_END(s->ops.pending, op, struct dreplsrv_out_operation *);
return WERR_OK;
}
static WERROR dreplsrv_schedule_partition_pull(struct dreplsrv_service *s,
struct dreplsrv_partition *p,
TALLOC_CTX *mem_ctx)
{
WERROR status;
struct dreplsrv_partition_source_dsa *cur;
for (cur = p->sources; cur; cur = cur->next) {
status = dreplsrv_schedule_partition_pull_source(s, cur,
DRSUAPI_EXOP_NONE, 0,
NULL, NULL);
W_ERROR_NOT_OK_RETURN(status);
}
return WERR_OK;
}
WERROR dreplsrv_schedule_pull_replication(struct dreplsrv_service *s, TALLOC_CTX *mem_ctx)
{
WERROR status;
struct dreplsrv_partition *p;
for (p = s->partitions; p; p = p->next) {
status = dreplsrv_schedule_partition_pull(s, p, mem_ctx);
W_ERROR_NOT_OK_RETURN(status);
}
return WERR_OK;
}
static void dreplsrv_pending_op_callback(struct tevent_req *subreq)
{
struct dreplsrv_out_operation *op = tevent_req_callback_data(subreq,
struct dreplsrv_out_operation);
struct repsFromTo1 *rf = op->source_dsa->repsFrom1;
struct dreplsrv_service *s = op->service;
WERROR werr;
werr = dreplsrv_op_pull_source_recv(subreq);
TALLOC_FREE(subreq);
DEBUG(4,("dreplsrv_op_pull_source(%s) for %s\n", win_errstr(werr),
ldb_dn_get_linearized(op->source_dsa->partition->dn)));
if (op->extended_op == DRSUAPI_EXOP_NONE) {
drepl_reps_update(s, "repsFrom", op->source_dsa->partition->dn,
&rf->source_dsa_obj_guid, werr);
}
if (op->callback) {
op->callback(s, werr, op->extended_ret, op->cb_data);
}
talloc_free(op);
s->ops.current = NULL;
dreplsrv_run_pending_ops(s);
}
void dreplsrv_run_pull_ops(struct dreplsrv_service *s)
{
struct dreplsrv_out_operation *op;
time_t t;
NTTIME now;
struct tevent_req *subreq;
if (s->ops.current) {
/* if there's still one running, we're done */
return;
}
if (!s->ops.pending) {
/* if there're no pending operations, we're done */
return;
}
t = time(NULL);
unix_to_nt_time(&now, t);
op = s->ops.pending;
s->ops.current = op;
DLIST_REMOVE(s->ops.pending, op);
op->source_dsa->repsFrom1->last_attempt = now;
subreq = dreplsrv_op_pull_source_send(op, s->task->event_ctx, op);
if (!subreq) {
struct repsFromTo1 *rf = op->source_dsa->repsFrom1;
if (op->extended_op == DRSUAPI_EXOP_NONE) {
drepl_reps_update(s, "repsFrom", op->source_dsa->partition->dn,
&rf->source_dsa_obj_guid, WERR_NOMEM);
}
s->ops.current = NULL;
/*
* call the callback (if any) so it gets the chance
* to do its job just like in any other failure situation
*/
if (op->callback) {
op->callback(s, WERR_NOMEM, op->extended_ret, op->cb_data);
}
return;
}
tevent_req_set_callback(subreq, dreplsrv_pending_op_callback, op);
}
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