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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 Kay Sievers
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <sys/timex.h>
#include <sys/socket.h>
#include "sd-event.h"
#include "util.h"
#include "log.h"
#include "timedate-sntp.h"
typedef struct Manager Manager;
struct Manager {
sd_event *event;
SNTPContext *sntp;
};
static void manager_free(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
#define _cleanup_manager_free_ _cleanup_(manager_freep)
static int manager_new(Manager **ret) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
m = new0(Manager, 1);
if (!m)
return -ENOMEM;
r = sd_event_default(&m->event);
if (r < 0)
return r;
*ret = m;
m = NULL;
return 0;
}
static void manager_free(Manager *m) {
if (!m)
return;
m->sntp = sntp_unref(m->sntp);
sd_event_unref(m->event);
free(m);
}
static void manager_report(usec_t poll_usec, double offset, double delay, double jitter, bool spike) {
log_info("%4llu %+10f %10f %10f%s",
poll_usec / USEC_PER_SEC, offset, delay, jitter, spike ? " spike" : "");
}
int main(int argc, char *argv[]) {
_cleanup_manager_free_ Manager *m = NULL;
const char *server;
int r;
r = manager_new(&m);
if (r < 0)
goto out;
r = sntp_new(&m->sntp, m->event);
if (r < 0)
goto out;
if (argv[1])
log_set_max_level(LOG_DEBUG);
else
sntp_report_register(m->sntp, manager_report);
//server = "216.239.32.15"; /* time1.google.com */
//server = "192.53.103.108"; /* ntp1.ptb.de */
server = "130.102.2.123"; /* 0.au.pool.ntp.org */
r = sntp_server_connect(m->sntp, server);
if (r < 0)
goto out;
r = sd_event_loop(m->event);
if (r < 0)
goto out;
out:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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