mirror of
https://github.com/samba-team/samba.git
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c643b10d09
- don't do push replication when pushChangeCount is 0
metze
(This used to be commit 4122e9ec3a
)
253 lines
8.2 KiB
C
253 lines
8.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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WINS Replication server
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Copyright (C) Stefan Metzmacher 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "dlinklist.h"
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#include "lib/events/events.h"
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#include "lib/socket/socket.h"
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#include "smbd/service_task.h"
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#include "smbd/service_stream.h"
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#include "lib/messaging/irpc.h"
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#include "librpc/gen_ndr/ndr_winsrepl.h"
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#include "wrepl_server/wrepl_server.h"
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#include "nbt_server/wins/winsdb.h"
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#include "ldb/include/ldb.h"
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#include "libcli/composite/composite.h"
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#include "libcli/wrepl/winsrepl.h"
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#include "wrepl_server/wrepl_out_helpers.h"
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static void wreplsrv_pull_handler_te(struct event_context *ev, struct timed_event *te,
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struct timeval t, void *ptr);
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static void wreplsrv_pull_handler_creq(struct composite_context *creq)
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{
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struct wreplsrv_partner *partner = talloc_get_type(creq->async.private_data, struct wreplsrv_partner);
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uint32_t interval;
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partner->pull.last_status = wreplsrv_pull_cycle_recv(partner->pull.creq);
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partner->pull.creq = NULL;
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talloc_free(partner->pull.cycle_io);
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partner->pull.cycle_io = NULL;
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if (!NT_STATUS_IS_OK(partner->pull.last_status)) {
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interval = partner->pull.error_count * partner->pull.retry_interval;
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interval = MIN(interval, partner->pull.interval);
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partner->pull.error_count++;
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DEBUG(1,("wreplsrv_pull_cycle(%s): %s: next: %us\n",
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partner->address, nt_errstr(partner->pull.last_status),
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interval));
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} else {
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interval = partner->pull.interval;
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partner->pull.error_count = 0;
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DEBUG(2,("wreplsrv_pull_cycle(%s): %s: next: %us\n",
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partner->address, nt_errstr(partner->pull.last_status),
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interval));
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}
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partner->pull.te = event_add_timed(partner->service->task->event_ctx, partner,
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timeval_current_ofs(interval, 0),
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wreplsrv_pull_handler_te, partner);
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if (!partner->pull.te) {
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DEBUG(0,("wreplsrv_pull_handler_creq: event_add_timed() failed! no memory!\n"));
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}
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}
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static void wreplsrv_pull_handler_te(struct event_context *ev, struct timed_event *te,
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struct timeval t, void *ptr)
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{
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struct wreplsrv_partner *partner = talloc_get_type(ptr, struct wreplsrv_partner);
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partner->pull.te = NULL;
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partner->pull.cycle_io = talloc(partner, struct wreplsrv_pull_cycle_io);
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if (!partner->pull.cycle_io) {
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goto requeue;
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}
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partner->pull.cycle_io->in.partner = partner;
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partner->pull.cycle_io->in.num_owners = 0;
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partner->pull.cycle_io->in.owners = NULL;
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partner->pull.cycle_io->in.wreplconn = NULL;
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partner->pull.creq = wreplsrv_pull_cycle_send(partner->pull.cycle_io, partner->pull.cycle_io);
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if (!partner->pull.creq) {
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DEBUG(1,("wreplsrv_pull_cycle_send(%s) failed\n",
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partner->address));
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goto requeue;
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}
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partner->pull.creq->async.fn = wreplsrv_pull_handler_creq;
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partner->pull.creq->async.private_data = partner;
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return;
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requeue:
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talloc_free(partner->pull.cycle_io);
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partner->pull.cycle_io = NULL;
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/* retry later */
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partner->pull.te = event_add_timed(partner->service->task->event_ctx, partner,
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timeval_add(&t, partner->pull.retry_interval, 0),
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wreplsrv_pull_handler_te, partner);
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if (!partner->pull.te) {
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DEBUG(0,("wreplsrv_pull_handler_te: event_add_timed() failed! no memory!\n"));
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}
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}
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NTSTATUS wreplsrv_sched_inform_action(struct wreplsrv_partner *partner, struct wrepl_table *inform_in)
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{
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if (partner->pull.creq) {
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/* there's already a pull in progress, so we're done */
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return NT_STATUS_OK;
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}
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/* remove the scheduled pull */
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talloc_free(partner->pull.te);
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partner->pull.te = NULL;
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partner->pull.cycle_io = talloc(partner, struct wreplsrv_pull_cycle_io);
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if (!partner->pull.cycle_io) {
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goto requeue;
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}
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partner->pull.cycle_io->in.partner = partner;
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partner->pull.cycle_io->in.num_owners = inform_in->partner_count;
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partner->pull.cycle_io->in.owners = inform_in->partners;
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talloc_steal(partner->pull.cycle_io, inform_in->partners);
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partner->pull.cycle_io->in.wreplconn = NULL;
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partner->pull.creq = wreplsrv_pull_cycle_send(partner->pull.cycle_io, partner->pull.cycle_io);
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if (!partner->pull.creq) {
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DEBUG(1,("wreplsrv_pull_cycle_send(%s) failed\n",
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partner->address));
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goto requeue;
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}
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partner->pull.creq->async.fn = wreplsrv_pull_handler_creq;
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partner->pull.creq->async.private_data = partner;
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return NT_STATUS_OK;
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requeue:
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talloc_free(partner->pull.cycle_io);
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partner->pull.cycle_io = NULL;
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/* retry later */
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partner->pull.te = event_add_timed(partner->service->task->event_ctx, partner,
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timeval_current_ofs(partner->pull.retry_interval, 0),
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wreplsrv_pull_handler_te, partner);
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if (!partner->pull.te) {
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DEBUG(0,("wreplsrv_pull_handler_te: event_add_timed() failed! no memory!\n"));
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}
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return NT_STATUS_OK;
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}
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static void wreplsrv_push_handler_te(struct event_context *ev, struct timed_event *te,
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struct timeval t, void *ptr);
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static void wreplsrv_push_handler_creq(struct composite_context *creq)
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{
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struct wreplsrv_partner *partner = talloc_get_type(creq->async.private_data, struct wreplsrv_partner);
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uint32_t interval;
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partner->push.last_status = wreplsrv_push_notify_recv(partner->push.creq);
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partner->push.creq = NULL;
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talloc_free(partner->push.notify_io);
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partner->push.notify_io = NULL;
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if (!NT_STATUS_IS_OK(partner->push.last_status)) {
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interval = 15;
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DEBUG(1,("wreplsrv_push_notify(%s): %s: next: %us\n",
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partner->address, nt_errstr(partner->push.last_status),
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interval));
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} else {
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interval = 100;
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DEBUG(2,("wreplsrv_push_notify(%s): %s: next: %us\n",
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partner->address, nt_errstr(partner->push.last_status),
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interval));
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}
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partner->push.te = event_add_timed(partner->service->task->event_ctx, partner,
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timeval_current_ofs(interval, 0),
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wreplsrv_push_handler_te, partner);
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if (!partner->push.te) {
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DEBUG(0,("wreplsrv_push_handler_creq: event_add_timed() failed! no memory!\n"));
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}
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}
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static void wreplsrv_push_handler_te(struct event_context *ev, struct timed_event *te,
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struct timeval t, void *ptr)
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{
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struct wreplsrv_partner *partner = talloc_get_type(ptr, struct wreplsrv_partner);
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partner->push.te = NULL;
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partner->push.notify_io = talloc(partner, struct wreplsrv_push_notify_io);
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if (!partner->push.notify_io) {
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goto requeue;
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}
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partner->push.notify_io->in.partner = partner;
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partner->push.notify_io->in.inform = False;
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partner->push.notify_io->in.propagate = False;
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partner->push.creq = wreplsrv_push_notify_send(partner->push.notify_io, partner->push.notify_io);
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if (!partner->push.creq) {
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DEBUG(1,("wreplsrv_push_notify_send(%s) failed\n",
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partner->address));
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goto requeue;
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}
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partner->push.creq->async.fn = wreplsrv_push_handler_creq;
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partner->push.creq->async.private_data = partner;
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return;
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requeue:
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talloc_free(partner->push.notify_io);
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partner->push.notify_io = NULL;
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/* retry later */
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partner->push.te = event_add_timed(partner->service->task->event_ctx, partner,
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timeval_add(&t, 5, 0),
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wreplsrv_push_handler_te, partner);
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if (!partner->push.te) {
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DEBUG(0,("wreplsrv_push_handler_te: event_add_timed() failed! no memory!\n"));
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}
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}
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NTSTATUS wreplsrv_setup_out_connections(struct wreplsrv_service *service)
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{
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struct wreplsrv_partner *cur;
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for (cur = service->partners; cur; cur = cur->next) {
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if ((cur->type & WINSREPL_PARTNER_PULL) && cur->pull.interval) {
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cur->pull.te = event_add_timed(service->task->event_ctx, cur,
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timeval_zero(), wreplsrv_pull_handler_te, cur);
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NT_STATUS_HAVE_NO_MEMORY(cur->pull.te);
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}
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if ((cur->type & WINSREPL_PARTNER_PUSH) && cur->push.change_count) {
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cur->push.te = event_add_timed(service->task->event_ctx, cur,
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timeval_zero(), wreplsrv_push_handler_te, cur);
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NT_STATUS_HAVE_NO_MEMORY(cur->push.te);
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}
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}
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return NT_STATUS_OK;
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}
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