[gnome-control-center] sharing: start or stop Rygel when Media Sharing is enabled or disabled

[Thomas Wood <thos src gnome org>]

commit 4d6d7253ed92d816261dbd319c13e8e020c09a0f
Author: Thomas Wood <thomas wood intel com>
Date:   Thu Feb 14 11:05:26 2013 +0000

    sharing: start or stop Rygel when Media Sharing is enabled or disabled
    
    Ensure Rygel is started when the Media Sharing option is enabled and
    stopped when it is disabled. This also adds and removes Rygel from the
    autostart directory as appropriate.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=692702

 panels/sharing/cc-media-sharing.c |   77 +++++++++++++++++++++++++++++++++++++
 1 files changed, 77 insertions(+), 0 deletions(-)
---
diff --git a/panels/sharing/cc-media-sharing.c b/panels/sharing/cc-media-sharing.c
index 03dcc9e..50079e2 100644
--- a/panels/sharing/cc-media-sharing.c
+++ b/panels/sharing/cc-media-sharing.c
@@ -21,6 +21,15 @@
 
 #include "cc-media-sharing.h"
 
+#include <gio/gio.h>
+#include <gio/gdesktopappinfo.h>
+#include <glib/gstdio.h>
+
+#define BUS_NAME "org.gnome.Rygel1"
+#define OBJECT_PATH "/org/gnome/Rygel1"
+#define INTERFACE_NAME "org.gnome.Rygel1"
+#define RYGEL_DESKTOP_ID "rygel.desktop"
+
 static GKeyFile*
 cc_media_sharing_open_key_file (void)
 {
@@ -40,6 +49,69 @@ cc_media_sharing_open_key_file (void)
   return file;
 }
 
+static void
+cc_media_sharing_enable_autostart (void)
+{
+  const gchar *source;
+  gchar *destination;
+  GDesktopAppInfo *info;
+  GFile *file;
+
+  info = g_desktop_app_info_new (RYGEL_DESKTOP_ID);
+  if (!info)
+    return;
+
+  /* start rygel */
+  g_app_info_launch (info, NULL, NULL, NULL);
+
+  /* create a symbolic link to the rygel desktop file in the autostart
+   * directory */
+  source = g_desktop_app_info_get_filename (info);
+
+  destination = g_build_filename (g_get_user_config_dir (), "autostart",
+                                  RYGEL_DESKTOP_ID, NULL);
+  file = g_file_new_for_path (destination);
+  g_free (destination);
+
+  g_file_make_symbolic_link (file, source, NULL, NULL);
+
+  g_object_unref (info);
+  g_object_unref (file);
+}
+
+static void
+cc_media_sharing_bus_ready_callback (GObject      *object,
+                                     GAsyncResult *result,
+                                     gpointer      user_data)
+{
+  GDBusConnection *connection;
+
+  connection = g_bus_get_finish (result, NULL);
+
+  if (!connection)
+    return;
+
+  g_dbus_connection_call (connection, BUS_NAME, OBJECT_PATH, INTERFACE_NAME,
+                          "Shutdown", NULL, NULL, G_DBUS_CALL_FLAGS_NONE, -1,
+                          NULL, NULL, NULL);
+}
+
+static void
+cc_media_sharing_disable_autostart (void)
+{
+  gchar *path;
+
+  path = g_build_filename (g_get_user_config_dir (), "autostart",
+                           RYGEL_DESKTOP_ID, NULL);
+
+  g_unlink (path);
+  g_free (path);
+
+  /* stop rygel */
+  g_bus_get (G_BUS_TYPE_SESSION, NULL, cc_media_sharing_bus_ready_callback,
+             NULL);
+}
+
 void
 cc_media_sharing_get_preferences (gboolean   *enabled,
                                   gchar    ***folders)
@@ -99,6 +171,11 @@ cc_media_sharing_set_preferences (gboolean   enabled,
 
   file = cc_media_sharing_open_key_file ();
 
+  if (enabled)
+    cc_media_sharing_enable_autostart ();
+  else
+    cc_media_sharing_disable_autostart ();
+
   g_key_file_set_boolean (file, "general", "upnp-enabled", enabled);
 
   str_list = folders;