*
* 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 <errno.h>
#include <glib.h>
+#include <stdlib.h>
+#include <gweb/gresolv.h>
+#include <netdb.h>
#include "connman.h"
-static GSList *driver_list = NULL;
-static GHashTable *server_hash = 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 void resolv_debug(const char *str, void *data)
+{
+ connman_info("%s: %s\n", (const char *) data, str);
+}
static void save_timeservers(char **servers)
{
GKeyFile *keyfile;
int cnt;
keyfile = __connman_storage_load_global();
- if (keyfile == NULL)
+ if (!keyfile)
keyfile = g_key_file_new();
- for (cnt = 0; servers != NULL && servers[cnt] != NULL; cnt++);
+ for (cnt = 0; servers && servers[cnt]; cnt++);
g_key_file_set_string_list(keyfile, "global", "Timeservers",
(const gchar **)servers, cnt);
return;
}
-static char **load_timeservers()
+static char **load_timeservers(void)
{
GKeyFile *keyfile;
- GError *error = NULL;
char **servers = NULL;
keyfile = __connman_storage_load_global();
- if (keyfile == NULL)
+ if (!keyfile)
return NULL;
servers = g_key_file_get_string_list(keyfile, "global",
- "Timeservers", NULL, &error);
- if (error) {
- DBG("Error loading timeservers: %s", error->message);
- g_error_free(error);
- }
+ "Timeservers", NULL, NULL);
g_key_file_free(keyfile);
return servers;
}
-static gint compare_priority(gconstpointer a, gconstpointer b)
+static void resolv_result(GResolvResultStatus status, char **results,
+ gpointer user_data)
{
- const struct connman_timeserver_driver *driver1 = a;
- const struct connman_timeserver_driver *driver2 = b;
+ int i;
+
+ 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;
+ }
+ }
- return driver2->priority - driver1->priority;
+ /* If resolving fails, move to the next server */
+ __connman_timeserver_sync_next();
}
-/**
- * connman_timeserver_driver_register:
- * @driver: timeserver driver definition
- *
- * Register a new timeserver driver
- *
- * Returns: %0 on success
+/*
+ * 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);
+
+ resolv_id = g_resolv_lookup_hostname(resolv, ts_current,
+ resolv_result, NULL);
+
+ return;
}
-/**
- * connman_timeserver_driver_unregister:
- * @driver: timeserver driver definition
- *
- * Remove a previously registered timeserver driver
- */
-void connman_timeserver_driver_unregister(struct connman_timeserver_driver *driver)
+GSList *__connman_timeserver_add_list(GSList *server_list,
+ const char *timeserver)
{
- DBG("driver %p name %s", driver, driver->name);
+ GSList *list = server_list;
- driver_list = g_slist_remove(driver_list, driver);
+ 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_append:
- * @server: server address
- *
- * Append time server server address to current list
+/*
+ * __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.
*/
-int connman_timeserver_append(const char *server)
+GSList *__connman_timeserver_get_all(struct connman_service *service)
{
- GSList *list;
+ 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;
- DBG("server %s", server);
+ service_ts_config = connman_service_get_timeservers_config(service);
- if (server == NULL)
- return -EINVAL;
+ /* 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]);
- /* This server is already handled by a driver */
- if (g_hash_table_lookup(server_hash, server))
- return 0;
+ service_ts = connman_service_get_timeservers(service);
- for (list = driver_list; list; list = list->next) {
- struct connman_timeserver_driver *driver = list->data;
- char *new_server;
+ /* 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]);
- if (driver->append == NULL)
- continue;
+ 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);
- new_server = g_strdup(server);
- if (new_server == NULL)
- return -ENOMEM;
-
- if (driver->append(server) == 0) {
- g_hash_table_insert(server_hash, new_server, driver);
- return 0;
- } else {
- g_free(new_server);
- }
+ /* Then add Service Gateway to the list */
+ if (service_gw)
+ list = __connman_timeserver_add_list(list, service_gw);
}
- return -ENOENT;
+ /* 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_remove:
- * @server: server address
- *
- * Remover time server server address from current list
- */
-int connman_timeserver_remove(const char *server)
+static gboolean ts_recheck(gpointer user_data)
{
- struct connman_timeserver_driver *driver;
+ GSList *ts;
- DBG("server %s", server);
+ ts = __connman_timeserver_get_all(__connman_service_get_default());
- if (server == NULL)
- return -EINVAL;
+ if (!ts) {
+ DBG("timeservers disabled");
- driver = g_hash_table_lookup(server_hash, server);
- if (driver == NULL)
- return -EINVAL;
+ return TRUE;
+ }
- g_hash_table_remove(server_hash, server);
+ if (g_strcmp0(ts_current, ts->data) != 0) {
+ DBG("current %s preferred %s", ts_current, (char *)ts->data);
- if (driver->remove == NULL)
- return -ENOENT;
+ g_slist_free_full(ts, g_free);
- return driver->remove(server);
-}
+ __connman_timeserver_sync(NULL);
-void connman_timeserver_sync(void)
-{
- GSList *list;
+ return FALSE;
+ }
DBG("");
- for (list = driver_list; list; list = list->next) {
- struct connman_timeserver_driver *driver = list->data;
+ g_slist_free_full(ts, g_free);
+
+ return TRUE;
+}
+
+static void ts_recheck_disable(void)
+{
+ if (ts_recheck_id == 0)
+ return;
- if (driver->sync == NULL)
- continue;
+ g_source_remove(ts_recheck_id);
+ ts_recheck_id = 0;
- driver->sync();
+ if (ts_current) {
+ g_free(ts_current);
+ ts_current = NULL;
}
}
-int __connman_timeserver_system_append(const char *server)
+static void ts_recheck_enable(void)
{
- int len;
- char **servers = NULL;
+ 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_sync(struct connman_service *default_service)
+{
+ struct connman_service *service;
+ char **nameservers;
+ int i;
+
+ if (default_service)
+ service = default_service;
+ else
+ service = __connman_service_get_default();
- if (server == NULL) {
- save_timeservers(servers);
+ if (!service)
+ return -EINVAL;
+
+ if (!resolv)
return 0;
- }
+ /*
+ * Before we start creating the new timeserver list we must stop
+ * any ongoing ntp query and server resolution.
+ */
- DBG("server %s", server);
+ __connman_ntp_stop();
- servers = load_timeservers();
+ ts_recheck_disable();
- if (servers != NULL) {
- int i;
+ if (resolv_id > 0)
+ g_resolv_cancel_lookup(resolv, resolv_id);
- for (i = 0; servers[i] != NULL; i++)
- if (g_strcmp0(servers[i], server) == 0) {
- g_strfreev(servers);
- return -EEXIST;
- }
+ g_resolv_flush_nameservers(resolv);
- len = g_strv_length(servers);
- servers = g_try_renew(char *, servers, len + 2);
- } else {
- len = 0;
- servers = g_try_new0(char *, len + 2);
- }
+ nameservers = connman_service_get_nameservers(service);
+ if (!nameservers)
+ return -EINVAL;
- if (servers == NULL)
- return -ENOMEM;
+ for (i = 0; nameservers[i]; i++)
+ g_resolv_add_nameserver(resolv, nameservers[i], 53, 0);
- servers[len] = g_strdup(server);
- servers[len + 1] = NULL;
+ g_strfreev(nameservers);
- save_timeservers(servers);
+ g_slist_free_full(ts_list, g_free);
+
+ ts_list = __connman_timeserver_get_all(service);
- g_strfreev(servers);
+ __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;
}
-int __connman_timeserver_system_remove(const char *server)
+static int timeserver_start(struct connman_service *service)
{
- char **servers;
- char **temp;
- int len, i, j;
+ char **nameservers;
+ int i;
- if (server == NULL)
- return -EINVAL;
-
- DBG("server %s", server);
+ DBG("service %p", service);
- servers = load_timeservers();
+ i = __connman_service_get_index(service);
+ if (i < 0)
+ return -EINVAL;
- if (servers == NULL)
- return 0;
+ nameservers = connman_service_get_nameservers(service);
+ if (!nameservers)
+ return -EINVAL;
- len = g_strv_length(servers);
- if (len == 1) {
- if (g_strcmp0(servers[0], server) != 0) {
- g_strfreev(servers);
- return 0;
- }
+ /* Stop an already ongoing resolution, if there is one */
+ if (resolv && resolv_id > 0)
+ g_resolv_cancel_lookup(resolv, resolv_id);
- g_strfreev(servers);
- servers = NULL;
- save_timeservers(servers);
- return 0;
+ /* get rid of the old resolver */
+ if (resolv) {
+ g_resolv_unref(resolv);
+ resolv = NULL;
}
- temp = g_try_new0(char *, len - 1);
- if (temp == NULL) {
- g_strfreev(servers);
- return -ENOMEM;
+ resolv = g_resolv_new(i);
+ if (!resolv) {
+ g_strfreev(nameservers);
+ return -ENOMEM;
}
- for (i = 0, j = 0; i < len; i++) {
- if (g_strcmp0(servers[i], server) != 0) {
- temp[j] = g_strdup(servers[i]);
- j++;
- }
+ 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;
}
- temp[len - 1] = NULL;
- g_strfreev(servers);
- servers = g_strdupv(temp);
- g_strfreev(temp);
+ 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);
- g_strfreev(servers);
+
+ __connman_timeserver_sync(NULL);
return 0;
}
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("");
- server_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
- g_free, NULL);
+ connman_notifier_register(×erver_notifier);
return 0;
}
{
DBG("");
- g_hash_table_destroy(server_hash);
+ connman_notifier_unregister(×erver_notifier);
}
projects / platform / upstream / connman.git / blobdiff