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/*
Unix SMB/CIFS implementation.
WINS Replication server
Copyright (C) Stefan Metzmacher 2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "dlinklist.h"
#include "lib/events/events.h"
#include "lib/socket/socket.h"
#include "smbd/service_task.h"
#include "smbd/service_stream.h"
#include "lib/messaging/irpc.h"
#include "librpc/gen_ndr/ndr_winsrepl.h"
#include "wrepl_server/wrepl_server.h"
#include "nbt_server/wins/winsdb.h"
#include "ldb/include/ldb.h"
#include "libcli/composite/composite.h"
#include "libcli/wrepl/winsrepl.h"
#include "wrepl_server/wrepl_out_helpers.h"
static void wreplsrv_out_pull_reschedule(struct wreplsrv_partner *partner, uint32_t interval)
{
NTSTATUS status;
partner->pull.next_run = timeval_current_ofs(interval, 0);
status = wreplsrv_periodic_schedule(partner->service, interval);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("wreplsrv_periodic_schedule() failed\n"));
}
}
static void wreplsrv_pull_handler_creq(struct composite_context *creq)
{
struct wreplsrv_partner *partner = talloc_get_type(creq->async.private_data, struct wreplsrv_partner);
struct wreplsrv_pull_cycle_io *old_cycle_io;
struct wrepl_table inform_in;
partner->pull.last_status = wreplsrv_pull_cycle_recv(partner->pull.creq);
partner->pull.creq = NULL;
old_cycle_io = partner->pull.cycle_io;
partner->pull.cycle_io = NULL;
if (NT_STATUS_IS_OK(partner->pull.last_status)) {
partner->pull.error_count = 0;
DEBUG(2,("wreplsrv_pull_cycle(%s): %s\n",
partner->address, nt_errstr(partner->pull.last_status)));
goto done;
}
partner->pull.error_count++;
if (partner->pull.error_count > 1) {
uint32_t retry_interval;
retry_interval = partner->pull.error_count * partner->pull.retry_interval;
retry_interval = MIN(retry_interval, partner->pull.interval);
DEBUG(1,("wreplsrv_pull_cycle(%s): %s: error_count: %u: reschedule(%u)\n",
partner->address, nt_errstr(partner->pull.last_status),
partner->pull.error_count, retry_interval));
wreplsrv_out_pull_reschedule(partner, retry_interval);
goto done;
}
DEBUG(1,("wreplsrv_pull_cycle(%s): %s: error_count:%u retry\n",
partner->address, nt_errstr(partner->pull.last_status),
partner->pull.error_count));
inform_in.partner_count = old_cycle_io->in.num_owners;
inform_in.partners = old_cycle_io->in.owners;
wreplsrv_out_partner_pull(partner, &inform_in);
done:
talloc_free(old_cycle_io);
}
void wreplsrv_out_partner_pull(struct wreplsrv_partner *partner, struct wrepl_table *inform_in)
{
/* there's already a pull in progress, so we're done */
if (partner->pull.creq) return;
partner->pull.cycle_io = talloc(partner, struct wreplsrv_pull_cycle_io);
if (!partner->pull.cycle_io) {
goto nomem;
}
partner->pull.cycle_io->in.partner = partner;
partner->pull.cycle_io->in.wreplconn = NULL;
if (inform_in) {
partner->pull.cycle_io->in.num_owners = inform_in->partner_count;
partner->pull.cycle_io->in.owners = inform_in->partners;
talloc_steal(partner->pull.cycle_io, inform_in->partners);
} else {
partner->pull.cycle_io->in.num_owners = 0;
partner->pull.cycle_io->in.owners = NULL;
}
partner->pull.creq = wreplsrv_pull_cycle_send(partner->pull.cycle_io, partner->pull.cycle_io);
if (!partner->pull.creq) {
DEBUG(1,("wreplsrv_pull_cycle_send(%s) failed\n",
partner->address));
goto nomem;
}
partner->pull.creq->async.fn = wreplsrv_pull_handler_creq;
partner->pull.creq->async.private_data = partner;
return;
nomem:
talloc_free(partner->pull.cycle_io);
partner->pull.cycle_io = NULL;
DEBUG(0,("wreplsrv_out_partner_pull(%s): no memory? (ignoring)\n",
partner->address));
return;
}
NTSTATUS wreplsrv_out_pull_run(struct wreplsrv_service *service)
{
struct wreplsrv_partner *partner;
for (partner = service->partners; partner; partner = partner->next) {
/* if it's not a pull partner, go to the next partner */
if (!(partner->type & WINSREPL_PARTNER_PULL)) continue;
/* if pulling is disabled for the partner, go to the next one */
if (partner->pull.interval == 0) continue;
/* if the next timer isn't reached, go to the next partner */
if (!timeval_expired(&partner->pull.next_run)) continue;
wreplsrv_out_pull_reschedule(partner, partner->pull.interval);
wreplsrv_out_partner_pull(partner, NULL);
}
return NT_STATUS_OK;
}
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