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/*
* Unix SMB/CIFS implementation.
* Receive and count messages
* Copyright (C) Volker Lendecke 2014
*
* 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 "replace.h"
#include "includes.h"
#include "lib/util/server_id.h"
#include "messages.h"
#include "lib/util/tevent_unix.h"
#include <stdio.h>
struct sink_state {
struct tevent_context *ev;
struct messaging_context *msg_ctx;
int msg_type;
unsigned *counter;
};
static void sink_done(struct tevent_req *subreq);
static struct tevent_req *sink_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct messaging_context *msg_ctx,
int msg_type, unsigned *counter)
{
struct tevent_req *req, *subreq;
struct sink_state *state;
req = tevent_req_create(mem_ctx, &state, struct sink_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->msg_ctx = msg_ctx;
state->msg_type = msg_type;
state->counter = counter;
subreq = messaging_read_send(state, state->ev, state->msg_ctx,
state->msg_type);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, sink_done, req);
return req;
}
static void sink_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct sink_state *state = tevent_req_data(
req, struct sink_state);
int ret;
ret = messaging_read_recv(subreq, NULL, NULL);
TALLOC_FREE(subreq);
if (tevent_req_error(req, ret)) {
return;
}
*state->counter += 1;
subreq = messaging_read_send(state, state->ev, state->msg_ctx,
state->msg_type);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, sink_done, req);
}
static int sink_recv(struct tevent_req *req)
{
int err;
if (tevent_req_is_unix_error(req, &err)) {
return err;
}
return 0;
}
struct prcount_state {
struct tevent_context *ev;
struct timeval interval;
unsigned *counter;
};
static void prcount_waited(struct tevent_req *subreq);
static struct tevent_req *prcount_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct timeval interval,
unsigned *counter)
{
struct tevent_req *req, *subreq;
struct prcount_state *state;
req = tevent_req_create(mem_ctx, &state, struct prcount_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->interval = interval;
state->counter = counter;
subreq = tevent_wakeup_send(
state, state->ev,
timeval_current_ofs(state->interval.tv_sec,
state->interval.tv_usec));
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, prcount_waited, req);
return req;
}
static void prcount_waited(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct prcount_state *state = tevent_req_data(
req, struct prcount_state);
bool ok;
ok = tevent_wakeup_recv(subreq);
TALLOC_FREE(subreq);
if (!ok) {
tevent_req_error(req, ENOMEM);
return;
}
printf("%u\n", *state->counter);
subreq = tevent_wakeup_send(
state, state->ev,
timeval_current_ofs(state->interval.tv_sec,
state->interval.tv_usec));
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, prcount_waited, req);
}
static int prcount_recv(struct tevent_req *req)
{
int err;
if (tevent_req_is_unix_error(req, &err)) {
return err;
}
return 0;
}
struct msgcount_state {
unsigned count;
};
static void msgcount_sunk(struct tevent_req *subreq);
static void msgcount_printed(struct tevent_req *subreq);
static struct tevent_req *msgcount_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct messaging_context *msg_ctx,
int msg_type, struct timeval interval)
{
struct tevent_req *req, *subreq;
struct msgcount_state *state;
req = tevent_req_create(mem_ctx, &state, struct msgcount_state);
if (req == NULL) {
return NULL;
}
subreq = sink_send(state, ev, msg_ctx, msg_type, &state->count);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, msgcount_sunk, req);
subreq = prcount_send(state, ev, interval, &state->count);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, msgcount_printed, req);
return req;
}
static void msgcount_sunk(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
int ret;
ret = sink_recv(subreq);
TALLOC_FREE(subreq);
if (tevent_req_error(req, ret)) {
return;
}
tevent_req_done(req);
}
static void msgcount_printed(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
int ret;
ret = prcount_recv(subreq);
TALLOC_FREE(subreq);
if (tevent_req_error(req, ret)) {
return;
}
tevent_req_done(req);
}
static int msgcount_recv(struct tevent_req *req)
{
int err;
if (tevent_req_is_unix_error(req, &err)) {
return err;
}
return 0;
}
int main(void)
{
TALLOC_CTX *frame = talloc_stackframe();
struct tevent_context *ev;
struct messaging_context *msg_ctx;
struct tevent_req *req;
int ret;
struct server_id id;
struct server_id_buf tmp;
lp_load_global(get_dyn_CONFIGFILE());
ev = tevent_context_init(frame);
if (ev == NULL) {
perror("tevent_context_init failed");
return -1;
}
msg_ctx = messaging_init(ev, ev);
if (msg_ctx == NULL) {
perror("messaging_init failed");
return -1;
}
id = messaging_server_id(msg_ctx);
printf("server_id: %s\n", server_id_str_buf(id, &tmp));
req = msgcount_send(ev, ev, msg_ctx, MSG_SMB_NOTIFY,
timeval_set(1, 0));
if (req == NULL) {
perror("msgcount_send failed");
return -1;
}
if (!tevent_req_poll(req, ev)) {
perror("tevent_req_poll failed");
return -1;
}
ret = msgcount_recv(req);
printf("msgcount_recv returned %d\n", ret);
return 0;
}
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