5 * Copyright (C) 2007-2012 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #include <gweb/gresolv.h>
35 static GSList *ts_list = NULL;
37 static GResolv *resolv = NULL;
38 static int resolv_id = 0;
40 static void resolv_debug(const char *str, void *data)
42 connman_info("%s: %s\n", (const char *) data, str);
44 static void save_timeservers(char **servers)
49 keyfile = __connman_storage_load_global();
51 keyfile = g_key_file_new();
53 for (cnt = 0; servers != NULL && servers[cnt] != NULL; cnt++);
55 g_key_file_set_string_list(keyfile, "global", "Timeservers",
56 (const gchar **)servers, cnt);
58 __connman_storage_save_global(keyfile);
60 g_key_file_free(keyfile);
65 static char **load_timeservers()
68 char **servers = NULL;
70 keyfile = __connman_storage_load_global();
74 servers = g_key_file_get_string_list(keyfile, "global",
75 "Timeservers", NULL, NULL);
77 g_key_file_free(keyfile);
82 static void resolv_result(GResolvResultStatus status, char **results, gpointer user_data)
86 DBG("status %d", status);
88 if (status == G_RESOLV_RESULT_STATUS_SUCCESS) {
89 if (results != NULL) {
90 for (i = 0; results[i]; i++)
91 DBG("result: %s", results[i]);
93 __connman_ntp_start(results[0]);
99 /* If resolving fails, move to the next server */
100 __connman_timeserver_sync_next();
104 * Once the timeserver list (ts_list) is created, we start querying the
105 * servers one by one. If resolving fails on one of them, we move to the
106 * next one. The user can enter either an IP address or a URL for the
107 * timeserver. We only resolve the urls. Once we have a IP for the NTP
108 * server, we start querying it for time corrections.
110 void __connman_timeserver_sync_next()
114 __connman_ntp_stop();
116 /* Get the 1st server in the list */
120 server = ts_list->data;
122 ts_list = g_slist_delete_link(ts_list, ts_list);
124 /* if its a IP , directly query it. */
125 if (connman_inet_check_ipaddress(server) > 0) {
126 DBG("Using timeservers %s", server);
128 __connman_ntp_start(server);
134 DBG("Resolving server %s", server);
136 resolv_id = g_resolv_lookup_hostname(resolv, server,
137 resolv_result, NULL);
144 GSList *__connman_timeserver_add_list(GSList *server_list,
145 const char *timeserver)
147 GSList *list = server_list;
149 if (timeserver == NULL)
152 while (list != NULL) {
153 char *existing_server = list->data;
154 if (strcmp(timeserver, existing_server) == 0)
156 list = g_slist_next(list);
158 return g_slist_prepend(server_list, g_strdup(timeserver));
162 * __connman_timeserver_get_all function creates the timeserver
163 * list which will be used to determine NTP server for time corrections.
164 * The service settings take priority over the global timeservers.
166 GSList *__connman_timeserver_get_all(struct connman_service *service)
169 struct connman_network *network;
172 char **service_ts_config;
173 const char *service_gw;
177 service_ts_config = connman_service_get_timeservers_config(service);
179 /* First add Service Timeservers.Configuration to the list */
180 for (i = 0; service_ts_config != NULL && service_ts_config[i] != NULL;
182 list = __connman_timeserver_add_list(list,
183 service_ts_config[i]);
185 service_ts = connman_service_get_timeservers(service);
187 /* First add Service Timeservers via DHCP to the list */
188 for (i = 0; service_ts != NULL && service_ts[i] != NULL; i++)
189 list = __connman_timeserver_add_list(list, service_ts[i]);
191 network = __connman_service_get_network(service);
192 if (network != NULL) {
193 index = connman_network_get_index(network);
194 service_gw = __connman_ipconfig_get_gateway_from_index(index,
195 CONNMAN_IPCONFIG_TYPE_ALL);
197 /* Then add Service Gateway to the list */
198 if (service_gw != NULL)
199 list = __connman_timeserver_add_list(list, service_gw);
202 /* Then add Global Timeservers to the list */
203 timeservers = load_timeservers();
205 for (i = 0; timeservers != NULL && timeservers[i] != NULL; i++)
206 list = __connman_timeserver_add_list(list, timeservers[i]);
208 g_strfreev(timeservers);
210 fallback_ts = connman_setting_get_string_list("FallbackTimeservers");
212 /* Lastly add the fallback servers */
213 for (i = 0; fallback_ts != NULL && fallback_ts[i] != NULL; i++)
214 list = __connman_timeserver_add_list(list, fallback_ts[i]);
216 return g_slist_reverse(list);
220 * This function must be called everytime the default service changes, the
221 * service timeserver(s) or gatway changes or the global timeserver(s) changes.
223 int __connman_timeserver_sync(struct connman_service *default_service)
225 struct connman_service *service;
227 if (default_service != NULL)
228 service = default_service;
230 service = __connman_service_get_default();
238 * Before we start creating the new timeserver list we must stop
239 * any ongoing ntp query and server resolution.
242 __connman_ntp_stop();
245 g_resolv_cancel_lookup(resolv, resolv_id);
247 g_slist_free_full(ts_list, g_free);
249 ts_list = __connman_timeserver_get_all(service);
251 __connman_service_timeserver_changed(service, ts_list);
253 if (ts_list == NULL) {
254 DBG("No timeservers set.");
258 __connman_timeserver_sync_next();
263 static int timeserver_start(struct connman_service *service)
268 DBG("service %p", service);
270 i = __connman_service_get_index(service);
274 nameservers = connman_service_get_nameservers(service);
275 if (nameservers == NULL)
278 /* Stop an already ongoing resolution, if there is one */
279 if (resolv != NULL && resolv_id > 0)
280 g_resolv_cancel_lookup(resolv, resolv_id);
282 /* get rid of the old resolver */
283 if (resolv != NULL) {
284 g_resolv_unref(resolv);
288 resolv = g_resolv_new(i);
289 if (resolv == NULL) {
290 g_strfreev(nameservers);
294 if (getenv("CONNMAN_RESOLV_DEBUG"))
295 g_resolv_set_debug(resolv, resolv_debug, "RESOLV");
297 for (i = 0; nameservers[i] != NULL; i++)
298 g_resolv_add_nameserver(resolv, nameservers[i], 53, 0);
300 g_strfreev(nameservers);
302 return __connman_timeserver_sync(service);
305 static void timeserver_stop()
309 if (resolv != NULL) {
310 g_resolv_unref(resolv);
314 g_slist_free_full(ts_list, g_free);
318 __connman_ntp_stop();
321 int __connman_timeserver_system_set(char **servers)
323 save_timeservers(servers);
325 __connman_timeserver_sync(NULL);
330 char **__connman_timeserver_system_get()
334 servers = load_timeservers();
338 static void default_changed(struct connman_service *default_service)
340 if (default_service != NULL)
341 timeserver_start(default_service);
346 static struct connman_notifier timeserver_notifier = {
347 .name = "timeserver",
348 .default_changed = default_changed,
351 int __connman_timeserver_init(void)
355 connman_notifier_register(×erver_notifier);
360 void __connman_timeserver_cleanup(void)
364 connman_notifier_unregister(×erver_notifier);