source: vendor/current/source3/winbindd/wb_seqnum.c

/*
   Unix SMB/CIFS implementation.
   async seqnum
   Copyright (C) Volker Lendecke 2009

   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 "winbindd.h"
#include "librpc/gen_ndr/ndr_winbind_c.h"

struct wb_seqnum_state {
        uint32_t seqnum;
};

static void wb_seqnum_done(struct tevent_req *subreq);

struct tevent_req *wb_seqnum_send(TALLOC_CTX *mem_ctx,
                                  struct tevent_context *ev,
                                  struct winbindd_domain *domain)
{
        struct tevent_req *req, *subreq;
        struct wb_seqnum_state *state;

        req = tevent_req_create(mem_ctx, &state, struct wb_seqnum_state);
        if (req == NULL) {
                return NULL;
        }
        subreq = dcerpc_wbint_QuerySequenceNumber_send(
                state, ev, dom_child_handle(domain), &state->seqnum);
        if (tevent_req_nomem(subreq, req)) {
                return tevent_req_post(req, ev);
        }
        tevent_req_set_callback(subreq, wb_seqnum_done, req);
        return req;
}

static void wb_seqnum_done(struct tevent_req *subreq)
{
        struct tevent_req *req = tevent_req_callback_data(
                subreq, struct tevent_req);
        struct wb_seqnum_state *state = tevent_req_data(
                req, struct wb_seqnum_state);
        NTSTATUS status, result;

        status = dcerpc_wbint_QuerySequenceNumber_recv(subreq, state, &result);
        TALLOC_FREE(subreq);
        if (any_nt_status_not_ok(status, result, &status)) {
                tevent_req_nterror(req, status);
                return;
        }
        tevent_req_done(req);
}

NTSTATUS wb_seqnum_recv(struct tevent_req *req, uint32_t *seqnum)
{
        struct wb_seqnum_state *state = tevent_req_data(
                req, struct wb_seqnum_state);
        NTSTATUS status;

        if (tevent_req_is_nterror(req, &status)) {
                return status;
        }
        *seqnum = state->seqnum;
        return NT_STATUS_OK;
}