src/mm-dbus-manager.c

   1 /* MManager - a Desktop wide manager for multimedia applications.
   2  *
   3  * Copyright (C) 2008 Cosimo Cecchi <cosimoc@gnome.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <glib.h>
  23 #include <glib-object.h>
  24 #include <dbus/dbus-glib.h>
  25 #include <dbus/dbus-glib-bindings.h>
  26 #include "mm-dbus-manager.h"
  27 #include "mm-dbus-manager-type-builtins.h"
  28
  29 gboolean mm_dbus_manager_register_app (MMDBusManager *manager, char *path, GError **error);
  30 gboolean mm_dbus_manager_get_registered_apps (MMDBusManager *manager, char ***app_paths,
  31                                               GError **error);
  32
  33 #include "mm-dbus-manager-server-bindings.h"
  34
  35 #define MM_DBUS_MANAGER_GET_PRIVATE(o) \
  36   (G_TYPE_INSTANCE_GET_PRIVATE ((o), MM_TYPE_DBUS_MANAGER, MMDBusManagerDetails))
  37
  38 struct _MMDBusManagerDetails {
  39   GPtrArray       *application_paths;
  40   DBusGProxy      *bus_proxy;
  41   DBusGConnection *connection;
  42 };
  43
  44 G_DEFINE_TYPE (MMDBusManager, mm_dbus_manager, G_TYPE_OBJECT);
  45
  46 static void
  47 mm_dbus_manager_finalize (GObject *o)
  48 {
  49   MMDBusManager *m = MM_DBUS_MANAGER (o);
  50
  51   g_ptr_array_foreach (m->details->application_paths,
  52                        (GFunc) g_free,
  53                        NULL);
  54   g_ptr_array_free (m->details->application_paths, TRUE);
  55
  56   if (m->details->bus_proxy) {
  57     g_object_unref (m->details->bus_proxy);
  58   }
  59
  60   G_OBJECT_CLASS (mm_dbus_manager_parent_class)->finalize (o);
  61 }
  62
  63 static void
  64 mm_dbus_manager_class_init (MMDBusManagerClass *klass)
  65 {
  66   GObjectClass *object_class = G_OBJECT_CLASS (klass);
  67
  68   object_class->finalize = mm_dbus_manager_finalize;
  69
  70   dbus_g_object_type_install_info (MM_TYPE_DBUS_MANAGER,
  71                                    &dbus_glib_mm_dbus_manager_object_info);
  72   dbus_g_error_domain_register (MM_DBUS_ERROR_QUARK, NULL, MM_TYPE_MD_BUS_ERROR_ENUM);
  73
  74   g_type_class_add_private (klass, sizeof (MMDBusManagerDetails));
  75 }
  76
  77 static void
  78 register_on_the_bus (MMDBusManager *manager)
  79 {
  80   GError *error = NULL;
  81   MMDBusManagerDetails *details = manager->details;
  82
  83   details->connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
  84   if (!details->connection) {
  85     g_critical ("Error getting a connection to the session bus: %s",
  86                 error->message);
  87     g_error_free (error);
  88     exit (1);
  89   }
  90
  91   details->bus_proxy = dbus_g_proxy_new_for_name (details->connection,
  92                                                   DBUS_SERVICE_DBUS,
  93                                                   DBUS_PATH_DBUS,
  94                                                   DBUS_INTERFACE_DBUS);
  95
  96   /* register the object */
  97   dbus_g_connection_register_g_object (details->connection,
  98                                        MM_DBUS_MANAGER_PATH,
  99                                        G_OBJECT (manager));
 100 }
 101
 102 static void
 103 mm_dbus_manager_init (MMDBusManager *manager)
 104 {
 105   MMDBusManagerDetails *details = manager->details = MM_DBUS_MANAGER_GET_PRIVATE (manager);
 106
 107   details->application_paths = g_ptr_array_new ();
 108   register_on_the_bus (manager);
 109 }
 110
 111 /* implementation of dbus methods */
 112
 113 gboolean
 114 mm_dbus_manager_register_app (MMDBusManager *manager, char *path, GError **error)
 115 {
 116   g_return_val_if_fail (MM_IS_DBUS_MANAGER (manager), FALSE);
 117
 118   if (path == NULL) {
 119     /* set the error, the path can't be NULL */
 120     g_set_error (error, MM_DBUS_ERROR_QUARK,
 121                  MM_DBUS_ERROR_NULL_ATTRIBUTE,
 122                  "Error: can't register an app with NULL path");
 123     return FALSE;
 124   }
 125
 126   g_ptr_array_add (manager->details->application_paths,
 127                    g_strdup (path));
 128   return TRUE;
 129 }
 130
 131 gboolean
 132 mm_dbus_manager_get_registered_apps (MMDBusManager *manager,
 133                                      char ***app_paths,
 134                                      GError **error)
 135 {
 136   int index;
 137   int size = manager->details->application_paths->len;
 138   g_return_val_if_fail (MM_IS_DBUS_MANAGER (manager), FALSE);
 139
 140   if (app_paths == NULL) {
 141     /* set the error, the client is doing something wrong */
 142     g_set_error (error, MM_DBUS_ERROR_QUARK,
 143                  MM_DBUS_ERROR_NULL_ATTRIBUTE,
 144                  "Error: pointers passed to GetRegisteredApps can't be NULL");
 145     return FALSE;
 146   }
 147
 148   *app_paths = g_new (gchar *, size + 1);
 149   (*app_paths) [size] = NULL;
 150
 151   for (index = 0; index < size; index++) {
 152     (*app_paths) [index] =
 153       g_strdup (g_ptr_array_index (manager->details->application_paths, index));
 154   }
 155
 156   return TRUE;
 157 }