+int config_parse_servers(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Manager *m = userdata;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ manager_flush_names(m);
+ manager_add_server_string(m, rvalue);
+
+ return 0;
+}
+
+static int manager_parse_config_file(Manager *m) {
+ static const char fn[] = "/etc/systemd/timesyncd.conf";
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(m);
+
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return 0;
+
+ log_warning("Failed to open configuration file %s: %m", fn);
+ return -errno;
+ }
+
+ r = config_parse(NULL, fn, f, "Time\0", config_item_perf_lookup,
+ (void*) timesyncd_gperf_lookup, false, false, m);
+ if (r < 0)
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
+
+ return r;
+}
+
+static bool network_is_online(void) {
+ _cleanup_free_ char *state = NULL;
+ int r;
+
+ r = sd_network_get_operational_state(&state);
+ if (r >= 0 && STR_IN_SET(state, "routable", "degraded"))
+ return true;
+
+ return false;
+}
+
+static int manager_network_event_handler(sd_event_source *s, int fd, uint32_t revents,
+ void *userdata) {
+ Manager *m = userdata;
+ bool connected, online;
+ int r;
+
+ assert(m);
+
+ /* check if the machine is online */
+ online = network_is_online();
+
+ /* check if the client is currently connected */
+ connected = (m->server_socket != -1);
+
+ if (connected && !online) {
+ log_info("No network connectivity, watching for changes.");
+ manager_disconnect(m);
+ } else if (!connected && online) {
+ log_info("Network configuration changed, trying to establish connection.");
+ if (m->current_server_address) {
+ r = manager_begin(m);
+ if (r < 0)
+ return r;
+ } else {
+ r = manager_connect(m);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ sd_network_monitor_flush(m->network_monitor);
+
+ return 0;
+}
+
+static int manager_network_monitor_listen(Manager *m) {
+ _cleanup_event_source_unref_ sd_event_source *event_source = NULL;
+ _cleanup_network_monitor_unref_ sd_network_monitor *monitor = NULL;
+ int r, fd, events;
+
+ r = sd_network_monitor_new(NULL, &monitor);
+ if (r < 0)
+ return r;
+
+ fd = sd_network_monitor_get_fd(monitor);
+ if (fd < 0)
+ return fd;
+
+ events = sd_network_monitor_get_events(monitor);
+ if (events < 0)
+ return events;
+
+ r = sd_event_add_io(m->event, &event_source, fd, events,
+ &manager_network_event_handler, m);
+ if (r < 0)
+ return r;
+
+ m->network_monitor = monitor;
+ m->network_event_source = event_source;
+ monitor = NULL;
+ event_source = NULL;
+
+ return 0;
+}
+