*
* Connection Manager
*
- * Copyright (C) 2007-2010 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include <config.h>
#endif
+#include <errno.h>
+
#include <glib.h>
+#include <stdlib.h>
+#include <gweb/gresolv.h>
+#include <netdb.h>
#include "connman.h"
-static GSList *driver_list = NULL;
+#define TS_RECHECK_INTERVAL 7200
+
+static GSList *ts_list = NULL;
+static char *ts_current = NULL;
+static int ts_recheck_id = 0;
+
+static GResolv *resolv = NULL;
+static int resolv_id = 0;
-static gint compare_priority(gconstpointer a, gconstpointer b)
+static void resolv_debug(const char *str, void *data)
+{
+ connman_info("%s: %s\n", (const char *) data, str);
+}
+static void save_timeservers(char **servers)
{
- const struct connman_timeserver_driver *driver1 = a;
- const struct connman_timeserver_driver *driver2 = b;
+ GKeyFile *keyfile;
+ int cnt;
+
+ keyfile = __connman_storage_load_global();
+ if (!keyfile)
+ keyfile = g_key_file_new();
+
+ for (cnt = 0; servers && servers[cnt]; cnt++);
+
+ g_key_file_set_string_list(keyfile, "global", "Timeservers",
+ (const gchar **)servers, cnt);
+
+ __connman_storage_save_global(keyfile);
- return driver2->priority - driver1->priority;
+ g_key_file_free(keyfile);
+
+ return;
}
-/**
- * connman_timeserver_driver_register:
- * @driver: timeserver driver definition
- *
- * Register a new timeserver driver
- *
- * Returns: %0 on success
+static char **load_timeservers(void)
+{
+ GKeyFile *keyfile;
+ char **servers = NULL;
+
+ keyfile = __connman_storage_load_global();
+ if (!keyfile)
+ return NULL;
+
+ servers = g_key_file_get_string_list(keyfile, "global",
+ "Timeservers", NULL, NULL);
+
+ g_key_file_free(keyfile);
+
+ return servers;
+}
+
+static void resolv_result(GResolvResultStatus status, char **results,
+ gpointer user_data)
+{
+ int i;
+
+#if defined TIZEN_EXT
+ gchar *server = NULL;
+
+ server = (gchar *)user_data;
+ ts_list = g_slist_append(ts_list, server);
+
+ DBG("added server %s", server);
+#endif
+
+ DBG("status %d", status);
+
+ if (status == G_RESOLV_RESULT_STATUS_SUCCESS) {
+ if (results) {
+ for (i = 0; results[i]; i++) {
+ DBG("result[%d]: %s", i, results[i]);
+ if (i == 0)
+ continue;
+
+ ts_list = __connman_timeserver_add_list(
+ ts_list, results[i]);
+ }
+
+ DBG("Using timeserver %s", results[0]);
+
+ __connman_ntp_start(results[0]);
+
+ return;
+ }
+ }
+
+ /* If resolving fails, move to the next server */
+ __connman_timeserver_sync_next();
+}
+
+/*
+ * Once the timeserver list (ts_list) is created, we start querying the
+ * servers one by one. If resolving fails on one of them, we move to the
+ * next one. The user can enter either an IP address or a URL for the
+ * timeserver. We only resolve the URLs. Once we have an IP for the NTP
+ * server, we start querying it for time corrections.
*/
-int connman_timeserver_driver_register(struct connman_timeserver_driver *driver)
+void __connman_timeserver_sync_next()
{
- DBG("driver %p name %s", driver, driver->name);
+ if (ts_current) {
+ g_free(ts_current);
+ ts_current = NULL;
+ }
- driver_list = g_slist_insert_sorted(driver_list, driver,
- compare_priority);
+ __connman_ntp_stop();
- return 0;
+ /* Get the 1st server in the list */
+ if (!ts_list)
+ return;
+
+ ts_current = ts_list->data;
+
+ ts_list = g_slist_delete_link(ts_list, ts_list);
+
+ /* if it's an IP, directly query it. */
+ if (connman_inet_check_ipaddress(ts_current) > 0) {
+ DBG("Using timeserver %s", ts_current);
+
+ __connman_ntp_start(ts_current);
+
+ return;
+ }
+
+ DBG("Resolving timeserver %s", ts_current);
+
+#if defined TIZEN_EXT
+ resolv_id = g_resolv_lookup_hostname(resolv, ts_current,
+ resolv_result, ts_current);
+#else
+ resolv_id = g_resolv_lookup_hostname(resolv, ts_current,
+ resolv_result, NULL);
+#endif
+
+ return;
}
-/**
- * connman_timeserver_driver_unregister:
- * @driver: timeserver driver definition
- *
- * Remove a previously registered timeserver driver
+GSList *__connman_timeserver_add_list(GSList *server_list,
+ const char *timeserver)
+{
+ GSList *list = server_list;
+
+ if (!timeserver)
+ return server_list;
+
+ while (list) {
+ char *existing_server = list->data;
+ if (strcmp(timeserver, existing_server) == 0)
+ return server_list;
+ list = g_slist_next(list);
+ }
+ return g_slist_prepend(server_list, g_strdup(timeserver));
+}
+
+/*
+ * __connman_timeserver_get_all function creates the timeserver
+ * list which will be used to determine NTP server for time corrections.
+ * The service settings take priority over the global timeservers.
*/
-void connman_timeserver_driver_unregister(struct connman_timeserver_driver *driver)
+GSList *__connman_timeserver_get_all(struct connman_service *service)
{
- DBG("driver %p name %s", driver, driver->name);
+ GSList *list = NULL;
+ struct connman_network *network;
+ char **timeservers;
+ char **service_ts;
+ char **service_ts_config;
+ const char *service_gw;
+ char **fallback_ts;
+ int index, i;
+
+ if (__connman_clock_timeupdates() == TIME_UPDATES_MANUAL)
+ return NULL;
- driver_list = g_slist_remove(driver_list, driver);
+ service_ts_config = connman_service_get_timeservers_config(service);
+
+ /* First add Service Timeservers.Configuration to the list */
+ for (i = 0; service_ts_config && service_ts_config[i];
+ i++)
+ list = __connman_timeserver_add_list(list,
+ service_ts_config[i]);
+
+ service_ts = connman_service_get_timeservers(service);
+
+ /* Then add Service Timeservers via DHCP to the list */
+ for (i = 0; service_ts && service_ts[i]; i++)
+ list = __connman_timeserver_add_list(list, service_ts[i]);
+
+ network = __connman_service_get_network(service);
+ if (network) {
+ index = connman_network_get_index(network);
+ service_gw = __connman_ipconfig_get_gateway_from_index(index,
+ CONNMAN_IPCONFIG_TYPE_ALL);
+
+ /* Then add Service Gateway to the list */
+ if (service_gw)
+ list = __connman_timeserver_add_list(list, service_gw);
+ }
+
+ /* Then add Global Timeservers to the list */
+ timeservers = load_timeservers();
+
+ for (i = 0; timeservers && timeservers[i]; i++)
+ list = __connman_timeserver_add_list(list, timeservers[i]);
+
+ g_strfreev(timeservers);
+
+ fallback_ts = connman_setting_get_string_list("FallbackTimeservers");
+
+ /* Lastly add the fallback servers */
+ for (i = 0; fallback_ts && fallback_ts[i]; i++)
+ list = __connman_timeserver_add_list(list, fallback_ts[i]);
+
+ return g_slist_reverse(list);
}
-/**
- * connman_timeserver_append:
- * @server: server address
- *
- * Append time server server address to current list
+static gboolean ts_recheck(gpointer user_data)
+{
+ GSList *ts;
+
+ ts = __connman_timeserver_get_all(__connman_service_get_default());
+
+ if (!ts) {
+ DBG("timeservers disabled");
+
+ return TRUE;
+ }
+
+ if (g_strcmp0(ts_current, ts->data) != 0) {
+ DBG("current %s preferred %s", ts_current, (char *)ts->data);
+
+ g_slist_free_full(ts, g_free);
+
+ __connman_timeserver_sync(NULL);
+
+ return FALSE;
+ }
+
+ DBG("");
+
+ g_slist_free_full(ts, g_free);
+
+ return TRUE;
+}
+
+static void ts_recheck_disable(void)
+{
+ if (ts_recheck_id == 0)
+ return;
+
+ g_source_remove(ts_recheck_id);
+ ts_recheck_id = 0;
+
+ if (ts_current) {
+ g_free(ts_current);
+ ts_current = NULL;
+ }
+}
+
+static void ts_recheck_enable(void)
+{
+ if (ts_recheck_id > 0)
+ return;
+
+ ts_recheck_id = g_timeout_add_seconds(TS_RECHECK_INTERVAL, ts_recheck,
+ NULL);
+}
+
+/*
+ * This function must be called everytime the default service changes, the
+ * service timeserver(s) or gateway changes or the global timeserver(s) changes.
*/
-int connman_timeserver_append(const char *server)
+int __connman_timeserver_sync(struct connman_service *default_service)
{
- DBG("server %s", server);
+ struct connman_service *service;
- if (server == NULL)
+ if (default_service)
+ service = default_service;
+ else
+ service = __connman_service_get_default();
+
+ if (!service)
return -EINVAL;
- connman_info("Adding time server %s", server);
+ if (!resolv)
+ return 0;
+ /*
+ * Before we start creating the new timeserver list we must stop
+ * any ongoing ntp query and server resolution.
+ */
+
+ __connman_ntp_stop();
+
+ ts_recheck_disable();
+
+ if (resolv_id > 0)
+ g_resolv_cancel_lookup(resolv, resolv_id);
+
+ g_slist_free_full(ts_list, g_free);
+
+ ts_list = __connman_timeserver_get_all(service);
+
+ __connman_service_timeserver_changed(service, ts_list);
+
+ if (!ts_list) {
+ DBG("No timeservers set.");
+ return 0;
+ }
+
+ ts_recheck_enable();
+
+ __connman_timeserver_sync_next();
return 0;
}
-/**
- * connman_timeserver_remove:
- * @server: server address
- *
- * Remover time server server address from current list
- */
-int connman_timeserver_remove(const char *server)
+static int timeserver_start(struct connman_service *service)
{
- DBG("server %s", server);
+ char **nameservers;
+ int i;
+
+ DBG("service %p", service);
- if (server == NULL)
+ i = __connman_service_get_index(service);
+ if (i < 0)
return -EINVAL;
- connman_info("Removing time server %s", server);
+ nameservers = connman_service_get_nameservers(service);
+ if (!nameservers)
+ return -EINVAL;
+
+ /* Stop an already ongoing resolution, if there is one */
+ if (resolv && resolv_id > 0)
+ g_resolv_cancel_lookup(resolv, resolv_id);
+
+ /* get rid of the old resolver */
+ if (resolv) {
+ g_resolv_unref(resolv);
+ resolv = NULL;
+ }
+
+ resolv = g_resolv_new(i);
+ if (!resolv) {
+ g_strfreev(nameservers);
+ return -ENOMEM;
+ }
+
+ if (getenv("CONNMAN_RESOLV_DEBUG"))
+ g_resolv_set_debug(resolv, resolv_debug, "RESOLV");
+
+ for (i = 0; nameservers[i]; i++)
+ g_resolv_add_nameserver(resolv, nameservers[i], 53, 0);
+
+ g_strfreev(nameservers);
+
+ return __connman_timeserver_sync(service);
+}
+
+static void timeserver_stop(void)
+{
+ DBG(" ");
+
+ if (resolv) {
+ g_resolv_unref(resolv);
+ resolv = NULL;
+ }
+
+ g_slist_free_full(ts_list, g_free);
+
+ ts_list = NULL;
+
+ __connman_ntp_stop();
+
+ ts_recheck_disable();
+}
+
+int __connman_timeserver_system_set(char **servers)
+{
+ save_timeservers(servers);
+
+ __connman_timeserver_sync(NULL);
+
+ return 0;
+}
+
+char **__connman_timeserver_system_get()
+{
+ char **servers;
+
+ servers = load_timeservers();
+ return servers;
+}
+
+static void default_changed(struct connman_service *default_service)
+{
+ if (default_service)
+ timeserver_start(default_service);
+ else
+ timeserver_stop();
+}
+
+static struct connman_notifier timeserver_notifier = {
+ .name = "timeserver",
+ .default_changed = default_changed,
+};
+
+int __connman_timeserver_init(void)
+{
+ DBG("");
+
+ connman_notifier_register(×erver_notifier);
return 0;
}
+
+void __connman_timeserver_cleanup(void)
+{
+ DBG("");
+
+ connman_notifier_unregister(×erver_notifier);
+}
projects / platform / upstream / connman.git / blobdiff