*
* Connection Manager
*
- * Copyright (C) 2007-2010 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2012 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 <glib.h>
#include <stdlib.h>
#include <gweb/gresolv.h>
+#include <netdb.h>
#include "connman.h"
-static char **system_timeservers = NULL;
-static char **timeservers = NULL;
+static GSList *ts_list = NULL;
static GResolv *resolv = NULL;
static int resolv_id = 0;
-static volatile int count;
static void resolv_debug(const char *str, void *data)
{
static char **load_timeservers()
{
GKeyFile *keyfile;
- GError *error = NULL;
char **servers = NULL;
keyfile = __connman_storage_load_global();
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;
}
-/* Restart NTP procedure */
-static void connman_timeserver_restart()
-{
- /* If service timeservers are in use, dont restart ntp */
- if (timeservers != NULL)
- return;
-
- if (resolv == NULL) {
- DBG("No online service.");
- return;
- }
-
- /* Cancel current lookup */
- if(resolv_id > 0)
- g_resolv_cancel_lookup(resolv, resolv_id);
-
- /* Reload system timeserver list */
- if (system_timeservers != NULL) {
- g_strfreev(system_timeservers);
- system_timeservers = NULL;
- }
-
- system_timeservers = load_timeservers();
-
- if (system_timeservers == NULL)
- return;
-
- __connman_ntp_stop();
-
- count = 0;
-
- __connman_timeserver_sync_next();
-}
-
static void resolv_result(GResolvResultStatus status, char **results, gpointer user_data)
{
int i;
DBG("status %d", status);
- __sync_fetch_and_add(&count, 1);
-
if (status == G_RESOLV_RESULT_STATUS_SUCCESS) {
if (results != NULL) {
for (i = 0; results[i]; i++)
}
}
+ /* 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 a IP for the NTP
+ * server, we start querying it for time corrections.
+ */
void __connman_timeserver_sync_next()
{
- if (system_timeservers == NULL ||
- system_timeservers[count] == NULL)
- return;
+ char *server;
- DBG("Trying timeserver %s", system_timeservers[count]);
+ __connman_ntp_stop();
- if (resolv)
- resolv_id = g_resolv_lookup_hostname(resolv,
- system_timeservers[count], resolv_result,
- NULL);
-}
+ /* Get the 1st server in the list */
+ if (ts_list == NULL)
+ return;
-int __connman_timeserver_sync(struct connman_service *service)
-{
- char **nameservers = NULL;
- int i;
+ server = ts_list->data;
- DBG("service %p", service);
+ ts_list = g_slist_delete_link(ts_list, ts_list);
- i = __connman_service_get_index(service);
- if (i < 0)
- return -EINVAL;
+ /* if its a IP , directly query it. */
+ if (connman_inet_check_ipaddress(server) > 0) {
+ DBG("Using timeservers %s", server);
- nameservers = connman_service_get_nameservers(service);
- if (nameservers == NULL)
- return -EINVAL;
+ __connman_ntp_start(server);
- resolv = g_resolv_new(i);
- if (resolv == NULL)
- return -ENOMEM;
+ g_free(server);
+ return;
+ }
- if (getenv("CONNMAN_RESOLV_DEBUG"))
- g_resolv_set_debug(resolv, resolv_debug, "RESOLV");
+ DBG("Resolving server %s", server);
- for (i = 0; nameservers[i] != NULL; i++)
- g_resolv_add_nameserver(resolv, nameservers[i], 53, 0);
+ resolv_id = g_resolv_lookup_hostname(resolv, server,
+ resolv_result, NULL);
- count = 0;
+ g_free(server);
- system_timeservers = load_timeservers();
+ return;
+}
- timeservers = connman_service_get_timeservers(service);
+GSList *__connman_timeserver_add_list(GSList *server_list,
+ const char *timeserver)
+{
+ GSList *list = server_list;
- if (timeservers != NULL && timeservers[0] != NULL) {
- DBG("Using service tiemservers");
- __connman_ntp_start(timeservers[0]);
- return 0;
- }
+ if (timeserver == NULL)
+ return server_list;
- if (system_timeservers == NULL || system_timeservers[count] == NULL) {
- DBG("No timeservers set.");
- return 0;
+ while (list != NULL) {
+ char *existing_server = list->data;
+ if (strcmp(timeserver, existing_server) == 0)
+ return server_list;
+ list = g_slist_next(list);
}
-
- DBG("Trying server %s", system_timeservers[count]);
-
- resolv_id = g_resolv_lookup_hostname(resolv, system_timeservers[count],
- resolv_result, NULL);
- return 0;
+ return g_slist_prepend(server_list, g_strdup(timeserver));
}
-void __connman_timeserver_stop()
+/*
+ * __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.
+ */
+GSList *__connman_timeserver_get_all(struct connman_service *service)
{
- DBG(" ");
-
- if (resolv != NULL) {
- g_resolv_unref(resolv);
- resolv = NULL;
+ 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;
+
+ service_ts_config = connman_service_get_timeservers_config(service);
+
+ /* First add Service Timeservers.Configuration to the list */
+ for (i = 0; service_ts_config != NULL && service_ts_config[i] != NULL;
+ i++)
+ list = __connman_timeserver_add_list(list,
+ service_ts_config[i]);
+
+ service_ts = connman_service_get_timeservers(service);
+
+ /* First add Service Timeservers via DHCP to the list */
+ for (i = 0; service_ts != NULL && service_ts[i] != NULL; i++)
+ list = __connman_timeserver_add_list(list, service_ts[i]);
+
+ network = __connman_service_get_network(service);
+ if (network != NULL) {
+ 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 != NULL)
+ list = __connman_timeserver_add_list(list, service_gw);
}
- if (system_timeservers != NULL) {
- g_strfreev(system_timeservers);
- system_timeservers = NULL;
- }
+ /* Then add Global Timeservers to the list */
+ timeservers = load_timeservers();
- timeservers = NULL;
+ for (i = 0; timeservers != NULL && timeservers[i] != NULL; i++)
+ list = __connman_timeserver_add_list(list, timeservers[i]);
- count = 0;
+ g_strfreev(timeservers);
- __connman_ntp_stop();
+ fallback_ts = connman_setting_get_string_list("FallbackTimeservers");
+
+ /* Lastly add the fallback servers */
+ for (i = 0; fallback_ts != NULL && fallback_ts[i] != NULL; i++)
+ list = __connman_timeserver_add_list(list, fallback_ts[i]);
+
+ return g_slist_reverse(list);
}
-int __connman_timeserver_system_append(const char *server)
+/*
+ * This function must be called everytime the default service changes, the
+ * service timeserver(s) or gatway changes or the global timeserver(s) changes.
+ */
+int __connman_timeserver_sync(struct connman_service *default_service)
{
- int len;
- char **servers = NULL;
+ struct connman_service *service;
- if (server == NULL) {
- save_timeservers(servers);
- goto restart;
- }
+ if (default_service != NULL)
+ service = default_service;
+ else
+ service = __connman_service_get_default();
- DBG("server %s", server);
+ if (service == NULL)
+ return -EINVAL;
- servers = load_timeservers();
+ if (resolv == NULL)
+ return 0;
+ /*
+ * Before we start creating the new timeserver list we must stop
+ * any ongoing ntp query and server resolution.
+ */
- if (servers != NULL) {
- int i;
+ __connman_ntp_stop();
- for (i = 0; servers[i] != NULL; i++)
- if (g_strcmp0(servers[i], server) == 0) {
- g_strfreev(servers);
- return -EEXIST;
- }
+ if (resolv_id > 0)
+ g_resolv_cancel_lookup(resolv, resolv_id);
- len = g_strv_length(servers);
- servers = g_try_renew(char *, servers, len + 2);
- } else {
- len = 0;
- servers = g_try_new0(char *, len + 2);
- }
+ g_slist_free_full(ts_list, g_free);
- if (servers == NULL)
- return -ENOMEM;
+ ts_list = __connman_timeserver_get_all(service);
- servers[len] = g_strdup(server);
- servers[len + 1] = NULL;
+ __connman_service_timeserver_changed(service, ts_list);
- save_timeservers(servers);
+ if (ts_list == NULL) {
+ DBG("No timeservers set.");
+ return 0;
+ }
- g_strfreev(servers);
-restart:
- connman_timeserver_restart();
+ __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;
-
- if (server == NULL)
- return -EINVAL;
+ char **nameservers;
+ int i;
- 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 == NULL)
+ 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 != NULL && 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 != NULL) {
+ 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 == NULL) {
+ 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] != NULL; i++)
+ g_resolv_add_nameserver(resolv, nameservers[i], 53, 0);
+
+ g_strfreev(nameservers);
+
+ return __connman_timeserver_sync(service);
+}
+
+static void timeserver_stop()
+{
+ DBG(" ");
+
+ if (resolv != NULL) {
+ 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();
+}
+int __connman_timeserver_system_set(char **servers)
+{
save_timeservers(servers);
- g_strfreev(servers);
- connman_timeserver_restart();
+ __connman_timeserver_sync(NULL);
return 0;
}
return servers;
}
+static void default_changed(struct connman_service *default_service)
+{
+ if (default_service != NULL)
+ 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 / framework / connectivity / connman.git / blobdiff