[gnome-settings-daemon/wip/datetime-service] Move clock service from gnome-panel
- From: Rodrigo Moya <rodrigo src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-settings-daemon/wip/datetime-service] Move clock service from gnome-panel
- Date: Wed, 16 Jun 2010 16:37:52 +0000 (UTC)
commit 89ff3a0bbe75b8caeefe9a36c1b7170627ae03a9
Author: Rodrigo Moya <rodrigo gnome-db org>
Date: Wed Jun 16 18:35:48 2010 +0200
Move clock service from gnome-panel
plugins/datetime/gsd-datetime-mechanism-main.c | 171 ++++
plugins/datetime/gsd-datetime-mechanism.c | 631 ++++++++++++
plugins/datetime/gsd-datetime-mechanism.h | 95 ++
plugins/datetime/gsd-datetime-mechanism.xml | 81 ++
...ome.SettingsDaemon.DateTimeMechanism.service.in | 4 +
plugins/datetime/system-timezone.c | 1048 ++++++++++++++++++++
plugins/datetime/system-timezone.h | 83 ++
7 files changed, 2113 insertions(+), 0 deletions(-)
---
diff --git a/plugins/datetime/gsd-datetime-mechanism-main.c b/plugins/datetime/gsd-datetime-mechanism-main.c
new file mode 100644
index 0000000..6aae463
--- /dev/null
+++ b/plugins/datetime/gsd-datetime-mechanism-main.c
@@ -0,0 +1,171 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 David Zeuthen <david fubar dk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <glib.h>
+#include <glib-object.h>
+
+#include <dbus/dbus-glib.h>
+#include <dbus/dbus-glib-lowlevel.h>
+
+
+#include "gnome-clock-applet-mechanism.h"
+
+static DBusGProxy *
+get_bus_proxy (DBusGConnection *connection)
+{
+ DBusGProxy *bus_proxy;
+
+ bus_proxy = dbus_g_proxy_new_for_name (connection,
+ DBUS_SERVICE_DBUS,
+ DBUS_PATH_DBUS,
+ DBUS_INTERFACE_DBUS);
+ return bus_proxy;
+}
+
+#define BUS_NAME "org.gnome.SettingsDaemon.DateTimeMechanism"
+
+static gboolean
+acquire_name_on_proxy (DBusGProxy *bus_proxy)
+{
+ GError *error;
+ guint result;
+ gboolean res;
+ gboolean ret;
+
+ ret = FALSE;
+
+ if (bus_proxy == NULL) {
+ goto out;
+ }
+
+ error = NULL;
+ res = dbus_g_proxy_call (bus_proxy,
+ "RequestName",
+ &error,
+ G_TYPE_STRING, BUS_NAME,
+ G_TYPE_UINT, 0,
+ G_TYPE_INVALID,
+ G_TYPE_UINT, &result,
+ G_TYPE_INVALID);
+ if (! res) {
+ if (error != NULL) {
+ g_warning ("Failed to acquire %s: %s", BUS_NAME, error->message);
+ g_error_free (error);
+ } else {
+ g_warning ("Failed to acquire %s", BUS_NAME);
+ }
+ goto out;
+ }
+
+ if (result != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
+ if (error != NULL) {
+ g_warning ("Failed to acquire %s: %s", BUS_NAME, error->message);
+ g_error_free (error);
+ } else {
+ g_warning ("Failed to acquire %s", BUS_NAME);
+ }
+ goto out;
+ }
+
+ ret = TRUE;
+
+ out:
+ return ret;
+}
+
+static DBusGConnection *
+get_system_bus (void)
+{
+ GError *error;
+ DBusGConnection *bus;
+
+ error = NULL;
+ bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
+ if (bus == NULL) {
+ g_warning ("Couldn't connect to system bus: %s", error->message);
+ g_error_free (error);
+ }
+ return bus;
+}
+
+int
+main (int argc, char **argv)
+{
+ GMainLoop *loop;
+ GsdDatetimeMechanism *mechanism;
+ DBusGProxy *bus_proxy;
+ DBusGConnection *connection;
+ int ret;
+
+ ret = 1;
+
+ if (! g_thread_supported ()) {
+ g_thread_init (NULL);
+ }
+ dbus_g_thread_init ();
+ g_type_init ();
+
+ connection = get_system_bus ();
+ if (connection == NULL) {
+ goto out;
+ }
+
+ bus_proxy = get_bus_proxy (connection);
+ if (bus_proxy == NULL) {
+ g_warning ("Could not construct bus_proxy object; bailing out");
+ goto out;
+ }
+
+ if (!acquire_name_on_proxy (bus_proxy) ) {
+ g_warning ("Could not acquire name; bailing out");
+ goto out;
+ }
+
+ mechanism = gsd_datetime_mechanism_new ();
+
+ if (mechanism == NULL) {
+ goto out;
+ }
+
+ loop = g_main_loop_new (NULL, FALSE);
+
+ g_main_loop_run (loop);
+
+ g_object_unref (mechanism);
+ g_main_loop_unref (loop);
+ ret = 0;
+
+out:
+ return ret;
+}
diff --git a/plugins/datetime/gsd-datetime-mechanism.c b/plugins/datetime/gsd-datetime-mechanism.c
new file mode 100644
index 0000000..a465542
--- /dev/null
+++ b/plugins/datetime/gsd-datetime-mechanism.c
@@ -0,0 +1,631 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 David Zeuthen <david fubar dk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <errno.h>
+#include <sys/time.h>
+
+#include <glib.h>
+#include <glib-object.h>
+
+#include <dbus/dbus-glib.h>
+#include <dbus/dbus-glib-lowlevel.h>
+
+#include <polkit/polkit.h>
+
+#include "system-timezone.h"
+
+#include "gnome-clock-applet-mechanism.h"
+#include "gnome-clock-applet-mechanism-glue.h"
+
+static gboolean
+do_exit (gpointer user_data)
+{
+ g_debug ("Exiting due to inactivity");
+ exit (1);
+ return FALSE;
+}
+
+static void
+reset_killtimer (void)
+{
+ static guint timer_id = 0;
+
+ if (timer_id > 0) {
+ g_source_remove (timer_id);
+ }
+ g_debug ("Setting killtimer to 30 seconds...");
+ timer_id = g_timeout_add_seconds (30, do_exit, NULL);
+}
+
+struct GsdDatetimeMechanismPrivate
+{
+ DBusGConnection *system_bus_connection;
+ DBusGProxy *system_bus_proxy;
+ PolkitAuthority *auth;
+};
+
+static void gsd_datetime_mechanism_finalize (GObject *object);
+
+G_DEFINE_TYPE (GsdDatetimeMechanism, gsd_datetime_mechanism, G_TYPE_OBJECT)
+
+#define GSD_DATETIME_MECHANISM_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanismPrivate))
+
+GQuark
+gsd_datetime_mechanism_error_quark (void)
+{
+ static GQuark ret = 0;
+
+ if (ret == 0) {
+ ret = g_quark_from_static_string ("gsd_datetime_mechanism_error");
+ }
+
+ return ret;
+}
+
+
+#define ENUM_ENTRY(NAME, DESC) { NAME, "" #NAME "", DESC }
+
+GType
+gsd_datetime_mechanism_error_get_type (void)
+{
+ static GType etype = 0;
+
+ if (etype == 0)
+ {
+ static const GEnumValue values[] =
+ {
+ ENUM_ENTRY (GSD_DATETIME_MECHANISM_ERROR_GENERAL, "GeneralError"),
+ ENUM_ENTRY (GSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED, "NotPrivileged"),
+ ENUM_ENTRY (GSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE, "InvalidTimezoneFile"),
+ { 0, 0, 0 }
+ };
+
+ g_assert (GSD_DATETIME_MECHANISM_NUM_ERRORS == G_N_ELEMENTS (values) - 1);
+
+ etype = g_enum_register_static ("GsdDatetimeMechanismError", values);
+ }
+
+ return etype;
+}
+
+
+static GObject *
+gsd_datetime_mechanism_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_properties)
+{
+ GsdDatetimeMechanism *mechanism;
+
+ mechanism = GSD_DATETIME_MECHANISM (G_OBJECT_CLASS (gsd_datetime_mechanism_parent_class)->constructor (
+ type,
+ n_construct_properties,
+ construct_properties));
+
+ return G_OBJECT (mechanism);
+}
+
+static void
+gsd_datetime_mechanism_class_init (GsdDatetimeMechanismClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->constructor = gsd_datetime_mechanism_constructor;
+ object_class->finalize = gsd_datetime_mechanism_finalize;
+
+ g_type_class_add_private (klass, sizeof (GsdDatetimeMechanismPrivate));
+
+ dbus_g_object_type_install_info (GSD_DATETIME_TYPE_MECHANISM, &dbus_glib_gsd_datetime_mechanism_object_info);
+
+ dbus_g_error_domain_register (GSD_DATETIME_MECHANISM_ERROR, NULL, GSD_DATETIME_MECHANISM_TYPE_ERROR);
+
+}
+
+static void
+gsd_datetime_mechanism_init (GsdDatetimeMechanism *mechanism)
+{
+ mechanism->priv = GSD_DATETIME_MECHANISM_GET_PRIVATE (mechanism);
+
+}
+
+static void
+gsd_datetime_mechanism_finalize (GObject *object)
+{
+ GsdDatetimeMechanism *mechanism;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSD_DATETIME_IS_MECHANISM (object));
+
+ mechanism = GSD_DATETIME_MECHANISM (object);
+
+ g_return_if_fail (mechanism->priv != NULL);
+
+ g_object_unref (mechanism->priv->system_bus_proxy);
+
+ G_OBJECT_CLASS (gsd_datetime_mechanism_parent_class)->finalize (object);
+}
+
+static gboolean
+register_mechanism (GsdDatetimeMechanism *mechanism)
+{
+ GError *error = NULL;
+
+ mechanism->priv->auth = polkit_authority_get ();
+
+ error = NULL;
+ mechanism->priv->system_bus_connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
+ if (mechanism->priv->system_bus_connection == NULL) {
+ if (error != NULL) {
+ g_critical ("error getting system bus: %s", error->message);
+ g_error_free (error);
+ }
+ goto error;
+ }
+
+ dbus_g_connection_register_g_object (mechanism->priv->system_bus_connection, "/",
+ G_OBJECT (mechanism));
+
+ mechanism->priv->system_bus_proxy = dbus_g_proxy_new_for_name (mechanism->priv->system_bus_connection,
+ DBUS_SERVICE_DBUS,
+ DBUS_PATH_DBUS,
+ DBUS_INTERFACE_DBUS);
+
+ reset_killtimer ();
+
+ return TRUE;
+
+error:
+ return FALSE;
+}
+
+
+GsdDatetimeMechanism *
+gsd_datetime_mechanism_new (void)
+{
+ GObject *object;
+ gboolean res;
+
+ object = g_object_new (GSD_DATETIME_TYPE_MECHANISM, NULL);
+
+ res = register_mechanism (GSD_DATETIME_MECHANISM (object));
+ if (! res) {
+ g_object_unref (object);
+ return NULL;
+ }
+
+ return GSD_DATETIME_MECHANISM (object);
+}
+
+static gboolean
+_check_polkit_for_action (GsdDatetimeMechanism *mechanism, DBusGMethodInvocation *context, const char *action)
+{
+ const char *sender;
+ GError *error;
+ PolkitSubject *subject;
+ PolkitAuthorizationResult *result;
+
+ error = NULL;
+
+ /* Check that caller is privileged */
+ sender = dbus_g_method_get_sender (context);
+ subject = polkit_system_bus_name_new (sender);
+
+ result = polkit_authority_check_authorization_sync (mechanism->priv->auth,
+ subject,
+ action,
+ NULL,
+ POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION,
+ NULL, &error);
+ g_object_unref (subject);
+
+ if (error) {
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+
+ return FALSE;
+ }
+
+ if (!polkit_authorization_result_get_is_authorized (result)) {
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED,
+ "Not Authorized for action %s", action);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ g_object_unref (result);
+
+ return FALSE;
+ }
+
+ g_object_unref (result);
+
+ return TRUE;
+}
+
+
+static gboolean
+_set_time (GsdDatetimeMechanism *mechanism,
+ const struct timeval *tv,
+ DBusGMethodInvocation *context)
+{
+ GError *error;
+
+ if (!_check_polkit_for_action (mechanism, context, "org.gnome.clockapplet.mechanism.settime"))
+ return FALSE;
+
+ if (settimeofday (tv, NULL) != 0) {
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error calling settimeofday({%lld,%lld}): %s",
+ (gint64) tv->tv_sec, (gint64) tv->tv_usec,
+ strerror (errno));
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ if (g_file_test ("/sbin/hwclock",
+ G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR | G_FILE_TEST_IS_EXECUTABLE)) {
+ int exit_status;
+ if (!g_spawn_command_line_sync ("/sbin/hwclock --systohc", NULL, NULL, &exit_status, &error)) {
+ GError *error2;
+ error2 = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error spawning /sbin/hwclock: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ return FALSE;
+ }
+ if (WEXITSTATUS (exit_status) != 0) {
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "/sbin/hwclock returned %d", exit_status);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+ }
+
+ dbus_g_method_return (context);
+ return TRUE;
+}
+
+static gboolean
+_rh_update_etc_sysconfig_clock (DBusGMethodInvocation *context, const char *key, const char *value)
+{
+ /* On Red Hat / Fedora, the /etc/sysconfig/clock file needs to be kept in sync */
+ if (g_file_test ("/etc/sysconfig/clock", G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR)) {
+ char **lines;
+ int n;
+ gboolean replaced;
+ char *data;
+ gsize len;
+ GError *error;
+
+ error = NULL;
+
+ if (!g_file_get_contents ("/etc/sysconfig/clock", &data, &len, &error)) {
+ GError *error2;
+ error2 = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error reading /etc/sysconfig/clock file: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ return FALSE;
+ }
+ replaced = FALSE;
+ lines = g_strsplit (data, "\n", 0);
+ g_free (data);
+
+ for (n = 0; lines[n] != NULL; n++) {
+ if (g_str_has_prefix (lines[n], key)) {
+ g_free (lines[n]);
+ lines[n] = g_strdup_printf ("%s%s", key, value);
+ replaced = TRUE;
+ }
+ }
+ if (replaced) {
+ GString *str;
+
+ str = g_string_new (NULL);
+ for (n = 0; lines[n] != NULL; n++) {
+ g_string_append (str, lines[n]);
+ if (lines[n + 1] != NULL)
+ g_string_append_c (str, '\n');
+ }
+ data = g_string_free (str, FALSE);
+ len = strlen (data);
+ if (!g_file_set_contents ("/etc/sysconfig/clock", data, len, &error)) {
+ GError *error2;
+ error2 = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error updating /etc/sysconfig/clock: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ g_free (data);
+ return FALSE;
+ }
+ g_free (data);
+ }
+ g_strfreev (lines);
+ }
+
+ return TRUE;
+}
+
+/* exported methods */
+
+gboolean
+gsd_datetime_mechanism_set_time (GsdDatetimeMechanism *mechanism,
+ gint64 seconds_since_epoch,
+ DBusGMethodInvocation *context)
+{
+ struct timeval tv;
+
+ reset_killtimer ();
+ g_debug ("SetTime(%lld) called", seconds_since_epoch);
+
+ tv.tv_sec = (time_t) seconds_since_epoch;
+ tv.tv_usec = 0;
+ return _set_time (mechanism, &tv, context);
+}
+
+gboolean
+gsd_datetime_mechanism_adjust_time (GsdDatetimeMechanism *mechanism,
+ gint64 seconds_to_add,
+ DBusGMethodInvocation *context)
+{
+ struct timeval tv;
+
+ reset_killtimer ();
+ g_debug ("AdjustTime(%lld) called", seconds_to_add);
+
+ if (gettimeofday (&tv, NULL) != 0) {
+ GError *error;
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error calling gettimeofday(): %s", strerror (errno));
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ tv.tv_sec += (time_t) seconds_to_add;
+ return _set_time (mechanism, &tv, context);
+}
+
+
+gboolean
+gsd_datetime_mechanism_set_timezone (GsdDatetimeMechanism *mechanism,
+ const char *zone_file,
+ DBusGMethodInvocation *context)
+{
+ GError *error;
+
+ reset_killtimer ();
+ g_debug ("SetTimezone('%s') called", zone_file);
+
+ if (!_check_polkit_for_action (mechanism, context, "org.gnome.clockapplet.mechanism.settimezone"))
+ return FALSE;
+
+ error = NULL;
+
+ if (!system_timezone_set_from_file (zone_file, &error)) {
+ GError *error2;
+ int code;
+
+ if (error->code == SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE)
+ code = GSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE;
+ else
+ code = GSD_DATETIME_MECHANISM_ERROR_GENERAL;
+
+ error2 = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ code, "%s", error->message);
+
+ g_error_free (error);
+
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+
+ return FALSE;
+ }
+
+ dbus_g_method_return (context);
+ return TRUE;
+}
+
+
+
+gboolean
+gsd_datetime_mechanism_get_hardware_clock_using_utc (GsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context)
+{
+ char **lines;
+ char *data;
+ gsize len;
+ GError *error;
+ gboolean is_utc;
+
+ error = NULL;
+
+ if (!g_file_get_contents ("/etc/adjtime", &data, &len, &error)) {
+ GError *error2;
+ error2 = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error reading /etc/adjtime file: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ return FALSE;
+ }
+
+ lines = g_strsplit (data, "\n", 0);
+ g_free (data);
+
+ if (g_strv_length (lines) < 3) {
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Cannot parse /etc/adjtime");
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ g_strfreev (lines);
+ return FALSE;
+ }
+
+ if (strcmp (lines[2], "UTC") == 0) {
+ is_utc = TRUE;
+ } else if (strcmp (lines[2], "LOCAL") == 0) {
+ is_utc = FALSE;
+ } else {
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Expected UTC or LOCAL at line 3 of /etc/adjtime; found '%s'", lines[2]);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ g_strfreev (lines);
+ return FALSE;
+ }
+ g_strfreev (lines);
+ dbus_g_method_return (context, is_utc);
+ return TRUE;
+}
+
+gboolean
+gsd_datetime_mechanism_set_hardware_clock_using_utc (GsdDatetimeMechanism *mechanism,
+ gboolean using_utc,
+ DBusGMethodInvocation *context)
+{
+ GError *error;
+
+ error = NULL;
+
+ if (!_check_polkit_for_action (mechanism, context, "org.gnome.clockapplet.mechanism.configurehwclock"))
+ return FALSE;
+
+ if (g_file_test ("/sbin/hwclock",
+ G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR | G_FILE_TEST_IS_EXECUTABLE)) {
+ int exit_status;
+ char *cmd;
+ cmd = g_strdup_printf ("/sbin/hwclock %s --systohc", using_utc ? "--utc" : "--localtime");
+ if (!g_spawn_command_line_sync (cmd, NULL, NULL, &exit_status, &error)) {
+ GError *error2;
+ error2 = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error spawning /sbin/hwclock: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ g_free (cmd);
+ return FALSE;
+ }
+ g_free (cmd);
+ if (WEXITSTATUS (exit_status) != 0) {
+ error = g_error_new (GSD_DATETIME_MECHANISM_ERROR,
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "/sbin/hwclock returned %d", exit_status);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ if (!_rh_update_etc_sysconfig_clock (context, "UTC=", using_utc ? "true" : "false"))
+ return FALSE;
+
+ }
+ dbus_g_method_return (context);
+ return TRUE;
+}
+
+static void
+check_can_do (GsdDatetimeMechanism *mechanism,
+ const char *action,
+ DBusGMethodInvocation *context)
+{
+ const char *sender;
+ PolkitSubject *subject;
+ PolkitAuthorizationResult *result;
+ GError *error;
+
+ /* Check that caller is privileged */
+ sender = dbus_g_method_get_sender (context);
+ subject = polkit_system_bus_name_new (sender);
+
+ error = NULL;
+ result = polkit_authority_check_authorization_sync (mechanism->priv->auth,
+ subject,
+ action,
+ NULL,
+ 0,
+ NULL,
+ &error);
+ g_object_unref (subject);
+
+ if (error) {
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return;
+ }
+
+ if (polkit_authorization_result_get_is_authorized (result)) {
+ dbus_g_method_return (context, 2);
+ }
+ else if (polkit_authorization_result_get_is_challenge (result)) {
+ dbus_g_method_return (context, 1);
+ }
+ else {
+ dbus_g_method_return (context, 0);
+ }
+
+ g_object_unref (result);
+}
+
+
+gboolean
+gsd_datetime_mechanism_can_set_time (GsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context)
+{
+ check_can_do (mechanism,
+ "org.gnome.clockapplet.mechanism.settime",
+ context);
+
+ return TRUE;
+}
+
+gboolean
+gsd_datetime_mechanism_can_set_timezone (GsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context)
+{
+ check_can_do (mechanism,
+ "org.gnome.clockapplet.mechanism.settimezone",
+ context);
+
+ return TRUE;
+}
diff --git a/plugins/datetime/gsd-datetime-mechanism.h b/plugins/datetime/gsd-datetime-mechanism.h
new file mode 100644
index 0000000..82477f6
--- /dev/null
+++ b/plugins/datetime/gsd-datetime-mechanism.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 David Zeuthen <david fubar dk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef GSD_DATETIME_MECHANISM_H
+#define GSD_DATETIME_MECHANISM_H
+
+#include <glib-object.h>
+#include <dbus/dbus-glib.h>
+
+G_BEGIN_DECLS
+
+#define GSD_DATETIME_TYPE_MECHANISM (gsd_datetime_mechanism_get_type ())
+#define GSD_DATETIME_MECHANISM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanism))
+#define GSD_DATETIME_MECHANISM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanismClass))
+#define GSD_DATETIME_IS_MECHANISM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GSD_DATETIME_TYPE_MECHANISM))
+#define GSD_DATETIME_IS_MECHANISM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GSD_DATETIME_TYPE_MECHANISM))
+#define GSD_DATETIME_MECHANISM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanismClass))
+
+typedef struct GsdDatetimeMechanismPrivate GsdDatetimeMechanismPrivate;
+
+typedef struct
+{
+ GObject parent;
+ GsdDatetimeMechanismPrivate *priv;
+} GsdDatetimeMechanism;
+
+typedef struct
+{
+ GObjectClass parent_class;
+} GsdDatetimeMechanismClass;
+
+typedef enum
+{
+ GSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ GSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED,
+ GSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE,
+ GSD_DATETIME_MECHANISM_NUM_ERRORS
+} GsdDatetimeMechanismError;
+
+#define GSD_DATETIME_MECHANISM_ERROR gsd_datetime_mechanism_error_quark ()
+
+GType gsd_datetime_mechanism_error_get_type (void);
+#define GSD_DATETIME_MECHANISM_TYPE_ERROR (gsd_datetime_mechanism_error_get_type ())
+
+
+GQuark gsd_datetime_mechanism_error_quark (void);
+GType gsd_datetime_mechanism_get_type (void);
+GsdDatetimeMechanism *gsd_datetime_mechanism_new (void);
+
+/* exported methods */
+gboolean gsd_datetime_mechanism_set_timezone (GsdDatetimeMechanism *mechanism,
+ const char *zone_file,
+ DBusGMethodInvocation *context);
+
+gboolean gsd_datetime_mechanism_can_set_timezone (GsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context);
+
+gboolean gsd_datetime_mechanism_set_time (GsdDatetimeMechanism *mechanism,
+ gint64 seconds_since_epoch,
+ DBusGMethodInvocation *context);
+
+gboolean gsd_datetime_mechanism_can_set_time (GsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context);
+
+gboolean gsd_datetime_mechanism_adjust_time (GsdDatetimeMechanism *mechanism,
+ gint64 seconds_to_add,
+ DBusGMethodInvocation *context);
+
+gboolean gsd_datetime_mechanism_get_hardware_clock_using_utc (GsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context);
+
+gboolean gsd_datetime_mechanism_set_hardware_clock_using_utc (GsdDatetimeMechanism *mechanism,
+ gboolean using_utc,
+ DBusGMethodInvocation *context);
+
+G_END_DECLS
+
+#endif /* GSD_DATETIME_MECHANISM_H */
diff --git a/plugins/datetime/gsd-datetime-mechanism.xml b/plugins/datetime/gsd-datetime-mechanism.xml
new file mode 100644
index 0000000..a7efddf
--- /dev/null
+++ b/plugins/datetime/gsd-datetime-mechanism.xml
@@ -0,0 +1,81 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd";>
+<node name="/">
+ <interface name="org.gnome.SettingsDaemon.DateTimeMechanism">
+ <method name="SetTimezone">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="zonefile" direction="in" type="s"/>
+ </method>
+ <method name="CanSetTimezone">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="value" direction="out" type="i">
+ <doc:doc>
+ <doc:summary>Whether the caller can set the timezone</doc:summary>
+ <doc:description>
+ <doc:para>
+ The return value is not a boolean, but an integer with the following meaning:
+ <doc:list>
+ <doc:item>
+ <doc:term>0</doc:term>
+ <doc:definition>the caller cannot set the timezone</doc:definition>
+ </doc:item>
+ <doc:item>
+ <doc:term>1</doc:term>
+ <doc:definition>the caller will be challenged before being able to set the timezone</doc:definition>
+ </doc:item>
+ <doc:item>
+ <doc:term>2</doc:term>
+ <doc:definition>the caller is authorized to set the timezone</doc:definition>
+ </doc:item>
+ </doc:list>
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+ </arg>
+ </method>
+ <method name="SetTime">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="seconds_since_epoch" direction="in" type="x"/>
+ </method>
+ <method name="CanSetTime">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="value" direction="out" type="i">
+ <doc:doc>
+ <doc:summary>Whether the caller can set the time</doc:summary>
+ <doc:description>
+ <doc:para>
+ The return value is not a boolean, but an integer with the following meaning:
+ <doc:list>
+ <doc:item>
+ <doc:term>0</doc:term>
+ <doc:definition>the caller cannot set the time</doc:definition>
+ </doc:item>
+ <doc:item>
+ <doc:term>1</doc:term>
+ <doc:definition>the caller will be challenged before being able to set the time</doc:definition>
+ </doc:item>
+ <doc:item>
+ <doc:term>2</doc:term>
+ <doc:definition>the caller is authorized to set the time</doc:definition>
+ </doc:item>
+ </doc:list>
+ </doc:para>
+ </doc:description>
+ </doc:doc>
+ </arg>
+ </method>
+ <method name="AdjustTime">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="seconds_to_add" direction="in" type="x"/>
+ </method>
+
+ <method name="GetHardwareClockUsingUtc">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="is_using_utc" direction="out" type="b"/>
+ </method>
+ <method name="SetHardwareClockUsingUtc">
+ <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+ <arg name="is_using_utc" direction="in" type="b"/>
+ </method>
+
+ </interface>
+</node>
diff --git a/plugins/datetime/org.gnome.SettingsDaemon.DateTimeMechanism.service.in b/plugins/datetime/org.gnome.SettingsDaemon.DateTimeMechanism.service.in
new file mode 100644
index 0000000..2aab9a9
--- /dev/null
+++ b/plugins/datetime/org.gnome.SettingsDaemon.DateTimeMechanism.service.in
@@ -0,0 +1,4 @@
+[D-BUS Service]
+Name=org.gnome.SettingsDaemon.DateTimeMechanism
+Exec= BINDIR@/gnome-settings-daemon
+User=root
diff --git a/plugins/datetime/system-timezone.c b/plugins/datetime/system-timezone.c
new file mode 100644
index 0000000..336f5a9
--- /dev/null
+++ b/plugins/datetime/system-timezone.c
@@ -0,0 +1,1048 @@
+/* System timezone handling
+ *
+ * Copyright (C) 2008 Novell, Inc.
+ *
+ * Authors: Vincent Untz <vuntz gnome org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Some code is based on previous code in clock-location.c and on code from
+ * tz.c (shipped with version <= 2.22.0). Those files were under the same
+ * license, with those authors and copyrights:
+ *
+ * clock-location.c:
+ * ================
+ * No header, but most of the work was done (AFAIK) by
+ * Federico Mena Quintero <federico novell com>
+ * Matthias Clasen <mclasen redhat com>
+ *
+ * tz.c:
+ * ====
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2004 Sun Microsystems, Inc.
+ *
+ * Authors: Hans Petter Jansson <hpj ximian com>
+ * additional functions by Erwann Chenede <erwann chenede sun com>
+ * reworked by Vincent Untz <vuntz gnome org>
+ *
+ * Largely based on Michael Fulbright's work on Anaconda.
+ */
+
+/* FIXME: it'd be nice to filter out the timezones that we might get when
+ * parsing config files that are not in zone.tab. Note that it's also wrong
+ * in some cases: eg, in tzdata2008b, Asia/Calcutta got renamed to
+ * Asia/Kolkata and the old name is not in zone.tab. */
+
+#include <string.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <gio/gio.h>
+
+#include "system-timezone.h"
+
+/* Files that we look at and that should be monitored */
+#define CHECK_NB 5
+#define ETC_TIMEZONE "/etc/timezone"
+#define ETC_TIMEZONE_MAJ "/etc/TIMEZONE"
+#define ETC_RC_CONF "/etc/rc.conf"
+#define ETC_SYSCONFIG_CLOCK "/etc/sysconfig/clock"
+#define ETC_CONF_D_CLOCK "/etc/conf.d/clock"
+#define ETC_LOCALTIME "/etc/localtime"
+
+/* The first 4 characters in a timezone file, from tzfile.h */
+#define TZ_MAGIC "TZif"
+
+static char *files_to_check[CHECK_NB] = {
+ ETC_TIMEZONE,
+ ETC_TIMEZONE_MAJ,
+ ETC_SYSCONFIG_CLOCK,
+ ETC_CONF_D_CLOCK,
+ ETC_LOCALTIME
+};
+
+static GObject *systz_singleton = NULL;
+
+G_DEFINE_TYPE (SystemTimezone, system_timezone, G_TYPE_OBJECT)
+
+typedef struct {
+ char *tz;
+ char *env_tz;
+ GFileMonitor *monitors[CHECK_NB];
+} SystemTimezonePrivate;
+
+enum {
+ CHANGED,
+ LAST_SIGNAL
+};
+
+static guint system_timezone_signals[LAST_SIGNAL] = { 0 };
+
+static GObject *system_timezone_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_properties);
+static void system_timezone_finalize (GObject *obj);
+
+static void system_timezone_monitor_changed (GFileMonitor *handle,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event,
+ gpointer user_data);
+static char *system_timezone_find (void);
+
+#define PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SYSTEM_TIMEZONE_TYPE, SystemTimezonePrivate))
+
+SystemTimezone *
+system_timezone_new (void)
+{
+ return g_object_new (SYSTEM_TIMEZONE_TYPE, NULL);
+}
+
+const char *
+system_timezone_get (SystemTimezone *systz)
+{
+ SystemTimezonePrivate *priv;
+
+ g_return_val_if_fail (IS_SYSTEM_TIMEZONE (systz), NULL);
+
+ priv = PRIVATE (systz);
+ return priv->tz;
+}
+
+const char *
+system_timezone_get_env (SystemTimezone *systz)
+{
+ SystemTimezonePrivate *priv;
+
+ g_return_val_if_fail (IS_SYSTEM_TIMEZONE (systz), NULL);
+
+ priv = PRIVATE (systz);
+ return priv->env_tz;
+}
+
+static void
+system_timezone_class_init (SystemTimezoneClass *class)
+{
+ GObjectClass *g_obj_class = G_OBJECT_CLASS (class);
+
+ g_obj_class->constructor = system_timezone_constructor;
+ g_obj_class->finalize = system_timezone_finalize;
+
+ system_timezone_signals[CHANGED] =
+ g_signal_new ("changed",
+ G_OBJECT_CLASS_TYPE (g_obj_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (SystemTimezoneClass, changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__STRING,
+ G_TYPE_NONE, 1, G_TYPE_STRING);
+
+ g_type_class_add_private (class, sizeof (SystemTimezonePrivate));
+}
+
+static void
+system_timezone_init (SystemTimezone *systz)
+{
+ int i;
+ SystemTimezonePrivate *priv = PRIVATE (systz);
+
+ priv->tz = NULL;
+ priv->env_tz = NULL;
+ for (i = 0; i < CHECK_NB; i++)
+ priv->monitors[i] = NULL;
+}
+
+static GObject *
+system_timezone_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_properties)
+{
+ GObject *obj;
+ SystemTimezonePrivate *priv;
+ int i;
+
+ /* This is a singleton, we don't need to have it per-applet */
+ if (systz_singleton)
+ return g_object_ref (systz_singleton);
+
+ obj = G_OBJECT_CLASS (system_timezone_parent_class)->constructor (
+ type,
+ n_construct_properties,
+ construct_properties);
+
+ priv = PRIVATE (obj);
+
+ priv->tz = system_timezone_find ();
+
+ priv->env_tz = g_strdup (g_getenv ("TZ"));
+
+ for (i = 0; i < CHECK_NB; i++) {
+ GFile *file;
+ GFile *parent;
+ GFileType parent_type;
+
+ file = g_file_new_for_path (files_to_check[i]);
+
+ parent = g_file_get_parent (file);
+ parent_type = g_file_query_file_type (parent, G_FILE_QUERY_INFO_NONE, NULL);
+ g_object_unref (parent);
+
+ /* We don't try to monitor the file if the parent directory
+ * doesn't exist: this means we're on a system where this file
+ * is not useful to determine the system timezone.
+ * Since gio does not monitor file in non-existing directories
+ * in a clever way (as of gio 2.22, it just polls every other
+ * seconds to see if the directory now exists), this avoids
+ * unnecessary wakeups. */
+ if (parent_type == G_FILE_TYPE_DIRECTORY)
+ priv->monitors[i] = g_file_monitor_file (file,
+ G_FILE_MONITOR_NONE,
+ NULL, NULL);
+ g_object_unref (file);
+
+ if (priv->monitors[i])
+ g_signal_connect (G_OBJECT (priv->monitors[i]),
+ "changed",
+ G_CALLBACK (system_timezone_monitor_changed),
+ obj);
+ }
+
+ systz_singleton = obj;
+
+ return systz_singleton;
+}
+
+static void
+system_timezone_finalize (GObject *obj)
+{
+ int i;
+ SystemTimezonePrivate *priv = PRIVATE (obj);
+
+ if (priv->tz) {
+ g_free (priv->tz);
+ priv->tz = NULL;
+ }
+
+ if (priv->env_tz) {
+ g_free (priv->env_tz);
+ priv->env_tz = NULL;
+ }
+
+ for (i = 0; i < CHECK_NB; i++) {
+ if (priv->monitors[i])
+ g_object_unref (priv->monitors[i]);
+ priv->monitors[i] = NULL;
+ }
+
+ G_OBJECT_CLASS (system_timezone_parent_class)->finalize (obj);
+
+ g_assert (obj == systz_singleton);
+
+ systz_singleton = NULL;
+}
+
+static void
+system_timezone_monitor_changed (GFileMonitor *handle,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event,
+ gpointer user_data)
+{
+ SystemTimezonePrivate *priv = PRIVATE (user_data);
+ char *new_tz;
+
+ if (event != G_FILE_MONITOR_EVENT_CHANGED &&
+ event != G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT &&
+ event != G_FILE_MONITOR_EVENT_DELETED &&
+ event != G_FILE_MONITOR_EVENT_CREATED)
+ return;
+
+ new_tz = system_timezone_find ();
+
+ g_assert (priv->tz != NULL && new_tz != NULL);
+
+ if (strcmp (priv->tz, new_tz) != 0) {
+ g_free (priv->tz);
+ priv->tz = new_tz;
+
+ g_signal_emit (G_OBJECT (user_data),
+ system_timezone_signals[CHANGED],
+ 0, priv->tz);
+ } else
+ g_free (new_tz);
+}
+
+
+/*
+ * Code to deal with the system timezone on all distros.
+ * There's no dependency on the SystemTimezone GObject here.
+ *
+ * Here's what we know:
+ *
+ * + /etc/localtime contains the binary data of the timezone.
+ * It can be a symlink to the actual data file, a hard link to the data
+ * file, or just a copy. So we can determine the timezone with this
+ * (reading the symlink, comparing inodes, or comparing content).
+ *
+ * + However, most distributions also have the timezone setting
+ * configured somewhere else. This might be better to read it from there.
+ *
+ * Debian/Ubuntu/Gentoo (new): content of /etc/timezone
+ * Fedora/Mandriva: the ZONE key in /etc/sysconfig/clock
+ * openSUSE: the TIMEZONE key in /etc/sysconfig/clock
+ * Solaris/OpenSolaris: the TZ key in /etc/TIMEZONE
+ * Arch Linux: the TIMEZONE key in /etc/rc.conf
+ * Gentoo (old): the ZONE key in /etc/conf.d/clock
+ *
+ * FIXME: reading the system-tools-backends, it seems there's this too:
+ * Solaris: the TZ key in /etc/default/init
+ * /etc/TIMEZONE seems to be a link to /etc/default/init
+ *
+ * First, some functions to handle those system config files.
+ *
+ */
+
+/* This works for Debian and derivatives (including Ubuntu), and new Gentoo */
+static char *
+system_timezone_read_etc_timezone (void)
+{
+ FILE *etc_timezone;
+ GString *reading;
+ int c;
+
+ etc_timezone = g_fopen (ETC_TIMEZONE, "r");
+ if (!etc_timezone)
+ return NULL;
+
+ reading = g_string_new ("");
+
+ c = fgetc (etc_timezone);
+ /* only get the first line, we'll validate the value later */
+ while (c != EOF && !g_ascii_isspace (c)) {
+ reading = g_string_append_c (reading, c);
+ c = fgetc (etc_timezone);
+ }
+
+ fclose (etc_timezone);
+
+ if (reading->str && reading->str[0] != '\0')
+ return g_string_free (reading, FALSE);
+ else
+ g_string_free (reading, TRUE);
+
+ return NULL;
+}
+
+static gboolean
+system_timezone_write_etc_timezone (const char *tz,
+ GError **error)
+{
+ char *content;
+ GError *our_error;
+ gboolean retval;
+
+ if (!g_file_test (ETC_TIMEZONE, G_FILE_TEST_IS_REGULAR))
+ return TRUE;
+
+ content = g_strdup_printf ("%s\n", tz);
+
+ our_error = NULL;
+ retval = g_file_set_contents (ETC_TIMEZONE, content, -1, &our_error);
+ g_free (content);
+
+ if (!retval) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_GENERAL,
+ ETC_TIMEZONE" cannot be overwritten: %s",
+ our_error->message);
+ g_error_free (our_error);
+ }
+
+ return retval;
+}
+
+
+/* Read a file that looks like a key-file (but there's no need for groups)
+ * and get the last value for a specific key */
+static char *
+system_timezone_read_key_file (const char *filename,
+ const char *key)
+{
+ GIOChannel *channel;
+ char *key_eq;
+ char *line;
+ char *retval;
+
+ if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR))
+ return NULL;
+
+ channel = g_io_channel_new_file (filename, "r", NULL);
+ if (!channel)
+ return NULL;
+
+ key_eq = g_strdup_printf ("%s=", key);
+ retval = NULL;
+
+ while (g_io_channel_read_line (channel, &line, NULL,
+ NULL, NULL) == G_IO_STATUS_NORMAL) {
+ if (g_str_has_prefix (line, key_eq)) {
+ char *value;
+ int len;
+
+ value = line + strlen (key_eq);
+ g_strstrip (value);
+
+ len = strlen (value);
+
+ if (value[0] == '\"') {
+ if (value[len - 1] == '\"') {
+ if (retval)
+ g_free (retval);
+
+ retval = g_strndup (value + 1,
+ len - 2);
+ }
+ } else {
+ if (retval)
+ g_free (retval);
+
+ retval = g_strdup (line + strlen (key_eq));
+ }
+
+ g_strstrip (retval);
+ }
+
+ g_free (line);
+ }
+
+ g_free (key_eq);
+ g_io_channel_unref (channel);
+
+ return retval;
+}
+
+static gboolean
+system_timezone_write_key_file (const char *filename,
+ const char *key,
+ const char *value,
+ GError **error)
+{
+ GError *our_error;
+ char *content;
+ gsize len;
+ char *key_eq;
+ char **lines;
+ gboolean replaced;
+ gboolean retval;
+ int n;
+
+ if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR))
+ return TRUE;
+
+ our_error = NULL;
+
+ if (!g_file_get_contents (filename, &content, &len, &our_error)) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_GENERAL,
+ "%s cannot be read: %s",
+ filename, our_error->message);
+ g_error_free (our_error);
+ return FALSE;
+ }
+
+ lines = g_strsplit (content, "\n", 0);
+ g_free (content);
+
+ key_eq = g_strdup_printf ("%s=", key);
+ replaced = FALSE;
+
+ for (n = 0; lines[n] != NULL; n++) {
+ if (g_str_has_prefix (lines[n], key_eq)) {
+ char *old_value;
+ gboolean use_quotes;
+
+ old_value = lines[n] + strlen (key_eq);
+ g_strstrip (old_value);
+ use_quotes = old_value[0] == '\"';
+
+ g_free (lines[n]);
+
+ if (use_quotes)
+ lines[n] = g_strdup_printf ("%s\"%s\"",
+ key_eq, value);
+ else
+ lines[n] = g_strdup_printf ("%s%s",
+ key_eq, value);
+
+ replaced = TRUE;
+ }
+ }
+
+ g_free (key_eq);
+
+ if (!replaced) {
+ g_strfreev (lines);
+ return TRUE;
+ }
+
+ content = g_strjoinv ("\n", lines);
+ g_strfreev (lines);
+
+ retval = g_file_set_contents (filename, content, -1, &our_error);
+ g_free (content);
+
+ if (!retval) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_GENERAL,
+ "%s cannot be overwritten: %s",
+ filename, our_error->message);
+ g_error_free (our_error);
+ }
+
+ return retval;
+}
+
+/* This works for Solaris/OpenSolaris */
+static char *
+system_timezone_read_etc_TIMEZONE (void)
+{
+ return system_timezone_read_key_file (ETC_TIMEZONE_MAJ,
+ "TZ");
+}
+
+static gboolean
+system_timezone_write_etc_TIMEZONE (const char *tz,
+ GError **error)
+{
+ return system_timezone_write_key_file (ETC_TIMEZONE_MAJ,
+ "TZ", tz, error);
+}
+
+/* This works for Fedora and Mandriva */
+static char *
+system_timezone_read_etc_sysconfig_clock (void)
+{
+ return system_timezone_read_key_file (ETC_SYSCONFIG_CLOCK,
+ "ZONE");
+}
+
+static gboolean
+system_timezone_write_etc_sysconfig_clock (const char *tz,
+ GError **error)
+{
+ return system_timezone_write_key_file (ETC_SYSCONFIG_CLOCK,
+ "ZONE", tz, error);
+}
+
+/* This works for openSUSE */
+static char *
+system_timezone_read_etc_sysconfig_clock_alt (void)
+{
+ return system_timezone_read_key_file (ETC_SYSCONFIG_CLOCK,
+ "TIMEZONE");
+}
+
+static gboolean
+system_timezone_write_etc_sysconfig_clock_alt (const char *tz,
+ GError **error)
+{
+ return system_timezone_write_key_file (ETC_SYSCONFIG_CLOCK,
+ "TIMEZONE", tz, error);
+}
+
+/* This works for old Gentoo */
+static char *
+system_timezone_read_etc_conf_d_clock (void)
+{
+ return system_timezone_read_key_file (ETC_CONF_D_CLOCK,
+ "TIMEZONE");
+}
+
+static gboolean
+system_timezone_write_etc_conf_d_clock (const char *tz,
+ GError **error)
+{
+ return system_timezone_write_key_file (ETC_CONF_D_CLOCK,
+ "TIMEZONE", tz, error);
+}
+
+/* This works for Arch Linux */
+static char *
+system_timezone_read_etc_rc_conf (void)
+{
+ return system_timezone_read_key_file (ETC_RC_CONF,
+ "TIMEZONE");
+}
+
+static gboolean
+system_timezone_write_etc_rc_conf (const char *tz,
+ GError **error)
+{
+ return system_timezone_write_key_file (ETC_RC_CONF,
+ "TIMEZONE", tz, error);
+}
+
+/*
+ *
+ * First, getting the timezone.
+ *
+ */
+
+static char *
+system_timezone_strip_path_if_valid (const char *filename)
+{
+ int skip;
+
+ if (!filename || !g_str_has_prefix (filename, SYSTEM_ZONEINFODIR"/"))
+ return NULL;
+
+ /* Timezone data files also live under posix/ and right/ for some
+ * reason.
+ * FIXME: make sure accepting those files is valid. I think "posix" is
+ * okay, not sure about "right" */
+ if (g_str_has_prefix (filename, SYSTEM_ZONEINFODIR"/posix/"))
+ skip = strlen (SYSTEM_ZONEINFODIR"/posix/");
+ else if (g_str_has_prefix (filename, SYSTEM_ZONEINFODIR"/right/"))
+ skip = strlen (SYSTEM_ZONEINFODIR"/right/");
+ else
+ skip = strlen (SYSTEM_ZONEINFODIR"/");
+
+ return g_strdup (filename + skip);
+}
+
+/* Read the soft symlink from /etc/localtime */
+static char *
+system_timezone_read_etc_localtime_softlink (void)
+{
+ char *file;
+ char *tz;
+
+ if (!g_file_test (ETC_LOCALTIME, G_FILE_TEST_IS_SYMLINK))
+ return NULL;
+
+ file = g_file_read_link (ETC_LOCALTIME, NULL);
+ tz = system_timezone_strip_path_if_valid (file);
+ g_free (file);
+
+ return tz;
+}
+
+typedef gboolean (*CompareFiles) (struct stat *a_stat,
+ struct stat *b_stat,
+ const char *a_content,
+ gsize a_content_len,
+ const char *b_filename);
+
+static char *
+recursive_compare (struct stat *localtime_stat,
+ const char *localtime_content,
+ gsize localtime_content_len,
+ char *file,
+ CompareFiles compare_func)
+{
+ struct stat file_stat;
+
+ if (g_stat (file, &file_stat) != 0)
+ return NULL;
+
+ if (S_ISREG (file_stat.st_mode)) {
+ if (compare_func (localtime_stat,
+ &file_stat,
+ localtime_content,
+ localtime_content_len,
+ file))
+ return system_timezone_strip_path_if_valid (file);
+ else
+ return NULL;
+ } else if (S_ISDIR (file_stat.st_mode)) {
+ GDir *dir = NULL;
+ char *ret = NULL;
+ const char *subfile = NULL;
+ char *subpath = NULL;
+
+ dir = g_dir_open (file, 0, NULL);
+ if (dir == NULL)
+ return NULL;
+
+ while ((subfile = g_dir_read_name (dir)) != NULL) {
+ subpath = g_build_filename (file, subfile, NULL);
+
+ ret = recursive_compare (localtime_stat,
+ localtime_content,
+ localtime_content_len,
+ subpath,
+ compare_func);
+
+ g_free (subpath);
+
+ if (ret != NULL)
+ break;
+ }
+
+ g_dir_close (dir);
+
+ return ret;
+ }
+
+ return NULL;
+}
+
+
+static gboolean
+files_are_identical_inode (struct stat *a_stat,
+ struct stat *b_stat,
+ const char *a_content,
+ gsize a_content_len,
+ const char *b_filename)
+{
+ return (a_stat->st_ino == b_stat->st_ino);
+}
+
+
+/* Determine if /etc/localtime is a hard link to some file, by looking at
+ * the inodes */
+static char *
+system_timezone_read_etc_localtime_hardlink (void)
+{
+ struct stat stat_localtime;
+
+ if (g_stat (ETC_LOCALTIME, &stat_localtime) != 0)
+ return NULL;
+
+ if (!S_ISREG (stat_localtime.st_mode))
+ return NULL;
+
+ return recursive_compare (&stat_localtime,
+ NULL,
+ 0,
+ SYSTEM_ZONEINFODIR,
+ files_are_identical_inode);
+}
+
+static gboolean
+files_are_identical_content (struct stat *a_stat,
+ struct stat *b_stat,
+ const char *a_content,
+ gsize a_content_len,
+ const char *b_filename)
+{
+ char *b_content = NULL;
+ gsize b_content_len = -1;
+ int cmp;
+
+ if (a_stat->st_size != b_stat->st_size)
+ return FALSE;
+
+ if (!g_file_get_contents (b_filename,
+ &b_content, &b_content_len, NULL))
+ return FALSE;
+
+ if (a_content_len != b_content_len) {
+ g_free (b_content);
+ return FALSE;
+ }
+
+ cmp = memcmp (a_content, b_content, a_content_len);
+ g_free (b_content);
+
+ return (cmp == 0);
+}
+
+/* Determine if /etc/localtime is a copy of a timezone file */
+static char *
+system_timezone_read_etc_localtime_content (void)
+{
+ struct stat stat_localtime;
+ char *localtime_content = NULL;
+ gsize localtime_content_len = -1;
+ char *retval;
+
+ if (g_stat (ETC_LOCALTIME, &stat_localtime) != 0)
+ return NULL;
+
+ if (!S_ISREG (stat_localtime.st_mode))
+ return NULL;
+
+ if (!g_file_get_contents (ETC_LOCALTIME,
+ &localtime_content,
+ &localtime_content_len,
+ NULL))
+ return NULL;
+
+ retval = recursive_compare (&stat_localtime,
+ localtime_content,
+ localtime_content_len,
+ SYSTEM_ZONEINFODIR,
+ files_are_identical_content);
+
+ g_free (localtime_content);
+
+ return retval;
+}
+
+typedef char * (*GetSystemTimezone) (void);
+/* The order of the functions here define the priority of the methods used
+ * to find the timezone. First method has higher priority. */
+static GetSystemTimezone get_system_timezone_methods[] = {
+ /* cheap and "more correct" than data from a config file */
+ system_timezone_read_etc_localtime_softlink,
+ /* reading various config files */
+ system_timezone_read_etc_timezone,
+ system_timezone_read_etc_sysconfig_clock,
+ system_timezone_read_etc_sysconfig_clock_alt,
+ system_timezone_read_etc_TIMEZONE,
+ system_timezone_read_etc_rc_conf,
+ /* reading deprecated config files */
+ system_timezone_read_etc_conf_d_clock,
+ /* reading /etc/timezone directly. Expensive since we have to stat
+ * many files */
+ system_timezone_read_etc_localtime_hardlink,
+ system_timezone_read_etc_localtime_content,
+ NULL
+};
+
+static gboolean
+system_timezone_is_valid (const char *tz)
+{
+ const char *c;
+
+ if (!tz)
+ return FALSE;
+
+ for (c = tz; *c != '\0'; c++) {
+ if (!(g_ascii_isalnum (*c) ||
+ *c == '/' || *c == '-' || *c == '_'))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static char *
+system_timezone_find (void)
+{
+ char *tz;
+ int i;
+
+ for (i = 0; get_system_timezone_methods[i] != NULL; i++) {
+ tz = get_system_timezone_methods[i] ();
+
+ if (system_timezone_is_valid (tz))
+ return tz;
+
+ g_free (tz);
+ }
+
+ return g_strdup ("UTC");
+}
+
+/*
+ *
+ * Now, setting the timezone.
+ *
+ */
+
+static gboolean
+system_timezone_is_zone_file_valid (const char *zone_file,
+ GError **error)
+{
+ GError *our_error;
+ GIOChannel *channel;
+ GIOStatus status;
+ char buffer[strlen (TZ_MAGIC)];
+ gsize read;
+
+ /* First, check the zone_file is properly rooted */
+ if (!g_str_has_prefix (zone_file, SYSTEM_ZONEINFODIR"/")) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE,
+ "Timezone file needs to be under "SYSTEM_ZONEINFODIR);
+ return FALSE;
+ }
+
+ /* Second, check it's a regular file that exists */
+ if (!g_file_test (zone_file, G_FILE_TEST_IS_REGULAR)) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE,
+ "No such timezone file %s", zone_file);
+ return FALSE;
+ }
+
+ /* Third, check that it's a tzfile (see tzfile(5)). The file has a 4
+ * bytes header which is TZ_MAGIC.
+ *
+ * TODO: is there glibc API for this? */
+ our_error = NULL;
+ channel = g_io_channel_new_file (zone_file, "r", &our_error);
+ if (!our_error)
+ status = g_io_channel_read_chars (channel,
+ buffer, strlen (TZ_MAGIC),
+ &read, &our_error);
+ if (channel)
+ g_io_channel_unref (channel);
+
+ if (our_error) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE,
+ "Timezone file %s cannot be read: %s",
+ zone_file, our_error->message);
+ g_error_free (our_error);
+ return FALSE;
+ }
+
+ if (read != strlen (TZ_MAGIC) || strncmp (buffer, TZ_MAGIC, strlen (TZ_MAGIC)) != 0) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE,
+ "%s is not a timezone file",
+ zone_file);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+system_timezone_set_etc_timezone (const char *zone_file,
+ GError **error)
+{
+ GError *our_error;
+ char *content;
+ gsize len;
+
+ if (!system_timezone_is_zone_file_valid (zone_file, error))
+ return FALSE;
+
+ /* If /etc/localtime is a symlink, write a symlink */
+ if (g_file_test (ETC_LOCALTIME, G_FILE_TEST_IS_SYMLINK)) {
+ if (g_unlink (ETC_LOCALTIME) == 0 &&
+ symlink (zone_file, ETC_LOCALTIME) == 0)
+ return TRUE;
+
+ /* If we couldn't symlink the file, we'll just fallback on
+ * copying it */
+ }
+
+ /* Else copy the file to /etc/localtime. We explicitly avoid doing
+ * hard links since they break with different partitions */
+ our_error = NULL;
+ if (!g_file_get_contents (zone_file, &content, &len, &our_error)) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_GENERAL,
+ "Timezone file %s cannot be read: %s",
+ zone_file, our_error->message);
+ g_error_free (our_error);
+ return FALSE;
+ }
+
+ if (!g_file_set_contents (ETC_LOCALTIME, content, len, &our_error)) {
+ g_set_error (error, SYSTEM_TIMEZONE_ERROR,
+ SYSTEM_TIMEZONE_ERROR_GENERAL,
+ ETC_LOCALTIME" cannot be overwritten: %s",
+ our_error->message);
+ g_error_free (our_error);
+ g_free (content);
+ return FALSE;
+ }
+
+ g_free (content);
+
+ return TRUE;
+}
+
+typedef gboolean (*SetSystemTimezone) (const char *tz,
+ GError **error);
+/* The order here does not matter too much: we'll try to change all files
+ * that already have a timezone configured. It matters in case of error,
+ * since the process will be stopped and the last methods won't be called.
+ * So we use the same order as in get_system_timezone_methods */
+static SetSystemTimezone set_system_timezone_methods[] = {
+ /* writing various config files if they exist and have the
+ * setting already present */
+ system_timezone_write_etc_timezone,
+ system_timezone_write_etc_sysconfig_clock,
+ system_timezone_write_etc_sysconfig_clock_alt,
+ system_timezone_write_etc_TIMEZONE,
+ system_timezone_write_etc_rc_conf,
+ /* writing deprecated config files if they exist and have the
+ * setting already present */
+ system_timezone_write_etc_conf_d_clock,
+ NULL
+};
+
+static gboolean
+system_timezone_update_config (const char *tz,
+ GError **error)
+{
+ int i;
+
+ for (i = 0; set_system_timezone_methods[i] != NULL; i++) {
+ if (!set_system_timezone_methods[i] (tz, error))
+ return FALSE;
+ /* FIXME: maybe continue to change all config files if
+ * possible? */
+ }
+
+ return TRUE;
+}
+
+gboolean
+system_timezone_set_from_file (const char *zone_file,
+ GError **error)
+{
+ const char *tz;
+
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ tz = zone_file + strlen (SYSTEM_ZONEINFODIR"/");
+
+ /* FIXME: is it right to return FALSE even when /etc/localtime was
+ * changed but not the config files? */
+ return (system_timezone_set_etc_timezone (zone_file, error) &&
+ system_timezone_update_config (tz, error));
+}
+
+gboolean
+system_timezone_set (const char *tz,
+ GError **error)
+{
+ char *zone_file;
+ gboolean retval;
+
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ zone_file = g_build_filename (SYSTEM_ZONEINFODIR, tz, NULL);
+
+ /* FIXME: is it right to return FALSE even when /etc/localtime was
+ * changed but not the config files? */
+ retval = system_timezone_set_etc_timezone (zone_file, error) &&
+ system_timezone_update_config (tz, error);
+
+ g_free (zone_file);
+
+ return retval;
+}
+
+GQuark
+system_timezone_error_quark (void)
+{
+ static GQuark ret = 0;
+
+ if (ret == 0) {
+ ret = g_quark_from_static_string ("system-timezone-error");
+ }
+
+ return ret;
+}
diff --git a/plugins/datetime/system-timezone.h b/plugins/datetime/system-timezone.h
new file mode 100644
index 0000000..6ae6dab
--- /dev/null
+++ b/plugins/datetime/system-timezone.h
@@ -0,0 +1,83 @@
+/* System timezone handling
+ *
+ * Copyright (C) 2008 Novell, Inc.
+ *
+ * Authors: Vincent Untz <vuntz gnome org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __SYSTEM_TIMEZONE_H__
+#define __SYSTEM_TIMEZONE_H__
+
+#include <glib.h>
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#ifdef HAVE_SOLARIS
+#define SYSTEM_ZONEINFODIR "/usr/share/lib/zoneinfo/tab"
+#else
+#define SYSTEM_ZONEINFODIR "/usr/share/zoneinfo"
+#endif
+
+
+#define SYSTEM_TIMEZONE_TYPE (system_timezone_get_type ())
+#define SYSTEM_TIMEZONE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), SYSTEM_TIMEZONE_TYPE, SystemTimezone))
+#define SYSTEM_TIMEZONE_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), SYSTEM_TIMEZONE_TYPE, SystemTimezoneClass))
+#define IS_SYSTEM_TIMEZONE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), SYSTEM_TIMEZONE_TYPE))
+#define IS_SYSTEM_TIMEZONE_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), SYSTEM_TIMEZONE_TYPE))
+#define SYSTEM_TIMEZONE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), SYSTEM_TIMEZONE_TYPE, SystemTimezoneClass))
+
+typedef struct
+{
+ GObject g_object;
+} SystemTimezone;
+
+typedef struct
+{
+ GObjectClass g_object_class;
+
+ void (* changed) (SystemTimezone *systz,
+ const char *tz);
+} SystemTimezoneClass;
+
+GType system_timezone_get_type (void);
+
+SystemTimezone *system_timezone_new (void);
+
+const char *system_timezone_get (SystemTimezone *systz);
+const char *system_timezone_get_env (SystemTimezone *systz);
+
+/* Functions to set the timezone. They won't be used by the applet, but
+ * by a program with more privileges */
+
+#define SYSTEM_TIMEZONE_ERROR system_timezone_error_quark ()
+GQuark system_timezone_error_quark (void);
+
+typedef enum
+{
+ SYSTEM_TIMEZONE_ERROR_GENERAL,
+ SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE,
+ SYSTEM_TIMEZONE_NUM_ERRORS
+} SystemTimezoneError;
+
+gboolean system_timezone_set_from_file (const char *zone_file,
+ GError **error);
+gboolean system_timezone_set (const char *tz,
+ GError **error);
+
+G_END_DECLS
+#endif /* __SYSTEM_TIMEZONE_H__ */
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