moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 291 insertions, 0 deletions

diff --git a/applets/clock/set-timezone.c b/applets/clock/set-timezone.c
new file mode 100644
index 00000000..3b4f1e56
--- /dev/null
+++ b/applets/clock/set-timezone.c
@@ -0,0 +1,291 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 David Zeuthen <[email protected]>
+ *
+ * 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 <dbus/dbus-glib.h>
+#include <dbus/dbus-glib-lowlevel.h>
+
+#include "set-timezone.h"
+
+
+static DBusGConnection *
+get_system_bus (void)
+{
+        GError          *error;
+        static DBusGConnection *bus = NULL;
+
+	if (bus == NULL) {
+        	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;
+}
+
+#define CACHE_VALIDITY_SEC 2
+
+typedef  void (*CanDoFunc) (gint value);
+
+static void
+notify_can_do (DBusGProxy     *proxy,
+	       DBusGProxyCall *call,
+	       void           *user_data)
+{
+	CanDoFunc callback = user_data;
+	GError *error = NULL;
+	gint value;
+
+	if (dbus_g_proxy_end_call (proxy, call,
+				   &error,
+				   G_TYPE_INT, &value,
+				   G_TYPE_INVALID)) {
+		callback (value);
+	}
+}
+
+static void
+refresh_can_do (const gchar *action, CanDoFunc callback)
+{
+        DBusGConnection *bus;
+        DBusGProxy      *proxy;
+
+        bus = get_system_bus ();
+        if (bus == NULL)
+                return;
+
+	proxy = dbus_g_proxy_new_for_name (bus,
+					   "org.mate.SettingsDaemon.DateTimeMechanism",
+					   "/",
+					   "org.mate.SettingsDaemon.DateTimeMechanism");
+
+	dbus_g_proxy_begin_call_with_timeout (proxy,
+					      action,
+					      notify_can_do,
+					      callback, NULL,
+					      INT_MAX,
+					      G_TYPE_INVALID);
+}
+
+static gint   settimezone_cache = 0;
+static time_t settimezone_stamp = 0;
+
+static void
+update_can_settimezone (gint res)
+{
+	settimezone_cache = res;
+	time (&settimezone_stamp);
+}
+
+gint
+can_set_system_timezone (void)
+{
+	time_t          now;
+
+	time (&now);
+	if (ABS (now - settimezone_stamp) > CACHE_VALIDITY_SEC) {
+		refresh_can_do ("CanSetTimezone", update_can_settimezone);
+		settimezone_stamp = now;
+	}
+
+	return settimezone_cache;
+}
+
+static gint   settime_cache = 0;
+static time_t settime_stamp = 0;
+
+static void
+update_can_settime (gint res)
+{
+	settime_cache = res;
+	time (&settime_stamp);
+}
+
+gint
+can_set_system_time (void)
+{
+	time_t now;
+
+	time (&now);
+	if (ABS (now - settime_stamp) > CACHE_VALIDITY_SEC) {
+		refresh_can_do ("CanSetTime", update_can_settime);
+		settime_stamp = now;
+	}
+
+	return settime_cache;
+}
+
+typedef struct {
+	gint ref_count;
+        gchar *call;
+	gint64 time;
+	gchar *filename;
+	GFunc callback;
+	gpointer data;
+	GDestroyNotify notify;
+} SetTimeCallbackData;
+
+static void
+free_data (gpointer d)
+{
+	SetTimeCallbackData *data = d;
+
+	data->ref_count--;
+	if (data->ref_count == 0) {
+		if (data->notify)
+			data->notify (data->data);
+		g_free (data->filename);
+		g_free (data);
+	}
+}
+
+static void
+set_time_notify (DBusGProxy     *proxy,
+		 DBusGProxyCall *call,
+		 void           *user_data)
+{
+	SetTimeCallbackData *data = user_data;
+	GError *error = NULL;
+
+	if (dbus_g_proxy_end_call (proxy, call, &error, G_TYPE_INVALID)) {
+		if (data->callback) 
+			data->callback (data->data, NULL);
+	}
+	else {
+		if (error->domain == DBUS_GERROR &&
+		    error->code == DBUS_GERROR_NO_REPLY) {
+			/* these errors happen because dbus doesn't
+			 * use monotonic clocks
+			 */	
+			g_warning ("ignoring no-reply error when setting time");
+			g_error_free (error);
+			if (data->callback)
+				data->callback (data->data, NULL);
+		}
+		else {
+			if (data->callback)
+				data->callback (data->data, error);
+			else
+				g_error_free (error);
+		}		
+	}
+}
+
+static void
+set_time_async (SetTimeCallbackData *data)
+{
+        DBusGConnection *bus;
+        DBusGProxy      *proxy;
+
+        bus = get_system_bus ();
+        if (bus == NULL)
+                return;
+
+	proxy = dbus_g_proxy_new_for_name (bus,
+					   "org.mate.SettingsDaemon.DateTimeMechanism",
+					   "/",
+					   "org.mate.SettingsDaemon.DateTimeMechanism");
+
+	data->ref_count++;
+	if (strcmp (data->call, "SetTime") == 0)
+		dbus_g_proxy_begin_call_with_timeout (proxy, 
+						      "SetTime",
+						      set_time_notify,
+						      data, free_data,
+						      INT_MAX,
+						      /* parameters: */
+						      G_TYPE_INT64, data->time,
+						      G_TYPE_INVALID,
+						      /* return values: */
+						      G_TYPE_INVALID);
+	else 
+		dbus_g_proxy_begin_call_with_timeout (proxy, 
+						      "SetTimezone",
+						      set_time_notify,
+						      data, free_data,
+						      INT_MAX,
+						      /* parameters: */
+						      G_TYPE_STRING, data->filename,
+						      G_TYPE_INVALID,
+						      /* return values: */
+						      G_TYPE_INVALID);
+}
+
+void
+set_system_time_async (gint64         time,
+		       GFunc          callback,
+		       gpointer       d,
+		       GDestroyNotify notify)
+{
+	SetTimeCallbackData *data;
+
+	if (time == -1)
+		return;
+
+	data = g_new0 (SetTimeCallbackData, 1);
+	data->ref_count = 1;
+	data->call = "SetTime";
+	data->time = time;
+	data->filename = NULL;
+	data->callback = callback;
+	data->data = d;
+	data->notify = notify;
+
+	set_time_async (data);
+	free_data (data);
+}
+
+void
+set_system_timezone_async (const gchar    *filename,
+			   GFunc           callback,
+			   gpointer        d,
+			   GDestroyNotify  notify)
+{
+	SetTimeCallbackData *data;
+
+	if (filename == NULL)
+		return;
+
+	data = g_new0 (SetTimeCallbackData, 1);
+	data->ref_count = 1;
+	data->call = "SetTimezone";
+	data->time = -1;
+	data->filename = g_strdup (filename);
+	data->callback = callback;
+	data->data = d;
+	data->notify = notify;
+
+	set_time_async (data);
+	free_data (data);
+}