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-rw-r--r--lib/ephy-dbus.c398
1 files changed, 398 insertions, 0 deletions
diff --git a/lib/ephy-dbus.c b/lib/ephy-dbus.c
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+++ b/lib/ephy-dbus.c
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+/*
+ * Copyright (C) 2004, 2005 Jean-François Rameau
+ *
+ * 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, 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.
+ *
+ * $Id$
+ */
+
+#include "config.h"
+
+#include "ephy-dbus.h"
+#include "ephy-lib-type-builtins.h"
+#include "ephy-marshal.h"
+#include "ephy-debug.h"
+
+#define EPHY_DBUS_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_DBUS, EphyDbusPrivate))
+
+struct _EphyDbusPrivate
+{
+ DBusConnection *session_bus;
+ DBusConnection *system_bus;
+ guint reconnect_timeout_id;
+};
+
+enum
+{
+ CONNECTED,
+ DISCONNECTED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static GObjectClass *parent_class = NULL;
+
+/* Epiphany's DBUS identification */
+static const char* epiphany_dbus_service = "org.gnome.Epiphany";
+static const char* epiphany_dbus_object_path = "/org/gnome/Epiphany";
+
+/* This function is called by DBUS when a message directed at the
+ * Epiphany's object path arrives (provided we're the registered instance!)
+ * it routes the message to the correct handler
+ */
+static DBusHandlerResult path_message_func (DBusConnection *connection,
+ DBusMessage *message,
+ gpointer data);
+
+/* Filter signals form session bus */
+static DBusHandlerResult session_filter_func (DBusConnection *connection,
+ DBusMessage *message,
+ void *user_data);
+/* Filter signals from system bus */
+static DBusHandlerResult system_filter_func (DBusConnection *connection,
+ DBusMessage *message,
+ void *user_data);
+
+/* Both connect to their respective bus */
+static void ephy_dbus_connect_to_session_bus (EphyDbus *dbus);
+static void ephy_dbus_connect_to_system_bus (EphyDbus *dbus);
+
+static DBusObjectPathVTable call_vtable = {
+ NULL,
+ path_message_func,
+ NULL,
+};
+
+/* implementation of the DBUS helpers */
+
+static gboolean
+ephy_dbus_connect_to_session_bus_cb (gpointer user_data)
+{
+ EphyDbus *dbus = EPHY_DBUS (user_data);
+ gboolean success;
+
+ ephy_dbus_connect_to_session_bus (dbus);
+
+ success = (dbus->priv->session_bus != NULL);
+ if (success)
+ {
+ dbus->priv->reconnect_timeout_id = 0;
+ }
+
+ return !success;
+}
+
+static gboolean
+ephy_dbus_connect_to_system_bus_cb (gpointer user_data)
+{
+ EphyDbus *dbus = EPHY_DBUS (user_data);
+
+ ephy_dbus_connect_to_system_bus (dbus);
+
+ return dbus->priv->system_bus != NULL;
+}
+
+static DBusHandlerResult
+session_filter_func (DBusConnection *connection,
+ DBusMessage *message,
+ void *user_data)
+{
+ EphyDbus *dbus = EPHY_DBUS (user_data);
+
+ if (dbus_message_is_signal (message,
+ DBUS_INTERFACE_ORG_FREEDESKTOP_LOCAL,
+ "Disconnected"))
+ {
+ LOG ("EphyDbus disconnected from session bus")
+
+ dbus_connection_unref (dbus->priv->session_bus);
+ dbus->priv->session_bus = NULL;
+
+ g_signal_emit (dbus, signals[DISCONNECTED], 0, EPHY_DBUS_SESSION);
+
+ /* try to reconnect later ... */
+ dbus->priv->reconnect_timeout_id =
+ g_timeout_add (3000, (GSourceFunc) ephy_dbus_connect_to_session_bus_cb, dbus);
+
+ return DBUS_HANDLER_RESULT_HANDLED;
+ }
+
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+static DBusHandlerResult
+system_filter_func (DBusConnection *connection,
+ DBusMessage *message,
+ void *user_data)
+{
+ EphyDbus *dbus = EPHY_DBUS (user_data);
+
+ LOG ("EphyDbus filtering message from system bus")
+
+ if (dbus_message_is_signal (message,
+ DBUS_INTERFACE_ORG_FREEDESKTOP_LOCAL,
+ "Disconnected"))
+ {
+ LOG ("EphyDbus disconnected from system bus")
+
+ dbus_connection_unref (dbus->priv->system_bus);
+ dbus->priv->system_bus = NULL;
+
+ g_signal_emit (dbus, signals[DISCONNECTED], 0, EPHY_DBUS_SYSTEM);
+
+ /* try to reconnect later ... */
+ g_timeout_add (3000, ephy_dbus_connect_to_system_bus_cb, (gpointer)dbus);
+
+ return DBUS_HANDLER_RESULT_HANDLED;
+ }
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+static void
+ephy_dbus_connect_to_system_bus (EphyDbus *dbus)
+{
+ DBusConnection *bus;
+ DBusError error;
+
+ LOG ("EphyDbus connecting to system DBUS")
+
+ dbus_error_init (&error);
+ bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
+ if (bus == NULL)
+ {
+ g_warning ("Failed to connect to the system D-BUS: %s", error.message);
+ dbus_error_free (&error);
+ return;
+ }
+ dbus_connection_setup_with_g_main (bus, NULL);
+
+ dbus_connection_add_filter (bus, system_filter_func, dbus, NULL);
+ dbus_bus_add_match (bus,
+ "type='signal',interface='org.freedesktop.NetworkManager'",
+ &error);
+ if (dbus_error_is_set(&error)) {
+ g_warning ("Couldn't register signal handler (system bus): %s: %s",
+ error.name, error.message);
+ return;
+ }
+
+ dbus->priv->system_bus = bus;
+
+ g_signal_emit (dbus, signals[CONNECTED], 0, EPHY_DBUS_SYSTEM);
+}
+
+static void
+ephy_dbus_connect_to_session_bus (EphyDbus *dbus)
+{
+ DBusError error;
+ DBusConnection *bus;
+
+ LOG ("EphyDbus connecting to session DBUS")
+
+ dbus_error_init (&error);
+ bus = dbus_bus_get (DBUS_BUS_SESSION, &error);
+
+ if (!bus) {
+ g_warning ("EphyDbus failed to connect to the session D-BUS: %s", error.message);
+ dbus_error_free (&error);
+ return;
+ }
+
+ dbus_connection_add_filter (bus, session_filter_func, dbus, NULL);
+
+ dbus_bus_acquire_service (bus, epiphany_dbus_service, 0, &error);
+ if (dbus_error_is_set (&error)) {
+ g_warning ("EphyDbus failed to acquire epiphany service");
+ dbus_error_free (&error);
+ return;
+ }
+
+ dbus_connection_register_object_path (bus,
+ epiphany_dbus_object_path,
+ &call_vtable, dbus);
+
+ dbus_bus_acquire_service (bus, epiphany_dbus_service, 0, NULL);
+
+ dbus_connection_setup_with_g_main (bus, NULL);
+
+ dbus->priv->session_bus = bus;
+
+ g_signal_emit (dbus, signals[CONNECTED], 0, EPHY_DBUS_SESSION);
+}
+
+static void
+ephy_dbus_disconnect_bus (DBusConnection *bus)
+{
+ if (bus != NULL) {
+
+ dbus_connection_disconnect (bus);
+ dbus_connection_unref (bus);
+ }
+}
+
+static DBusHandlerResult
+path_message_func (DBusConnection *connection,
+ DBusMessage *message,
+ gpointer data)
+{
+ DBusHandlerResult result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+ LOG ("EphyDbus filtering path messagefrom session bus")
+
+ if (dbus_message_is_method_call (message, epiphany_dbus_service, "load"))
+ {
+ result = DBUS_HANDLER_RESULT_HANDLED;
+ }
+
+ return result;
+}
+
+
+/* Public methods */
+
+void
+ephy_dbus_startup (EphyDbus *dbus)
+{
+ g_return_if_fail (EPHY_IS_DBUS (dbus));
+
+ LOG ("EphyDbus startup")
+
+ ephy_dbus_connect_to_session_bus (dbus);
+ ephy_dbus_connect_to_system_bus (dbus);
+}
+
+void
+ephy_dbus_shutdown (EphyDbus *dbus)
+{
+ g_return_if_fail (EPHY_IS_DBUS (dbus));
+
+ LOG ("EphyDbus shutdown")
+
+ if (dbus->priv->reconnect_timeout_id != 0)
+ {
+ g_source_remove (dbus->priv->reconnect_timeout_id);
+ dbus->priv->reconnect_timeout_id = 0;
+ }
+
+ ephy_dbus_disconnect_bus (dbus->priv->session_bus);
+ ephy_dbus_disconnect_bus (dbus->priv->system_bus);
+}
+
+DBusConnection *
+ephy_dbus_get_bus (EphyDbus *dbus,
+ EphyDbusBus kind)
+{
+ DBusConnection *bus = NULL;
+
+ g_return_val_if_fail (EPHY_IS_DBUS (dbus), NULL);
+
+ switch (kind)
+ {
+ case EPHY_DBUS_SYSTEM:
+ bus = dbus->priv->system_bus;
+ break;
+ case EPHY_DBUS_SESSION:
+ bus = dbus->priv->session_bus;
+ break;
+ default:
+ bus = dbus->priv->session_bus;
+ }
+ return bus;
+}
+
+/* Class implementation */
+
+static void
+ephy_dbus_init (EphyDbus *dbus)
+{
+ dbus->priv = EPHY_DBUS_GET_PRIVATE (dbus);
+
+ LOG ("EphyDbus initialising")
+}
+
+static void
+ephy_dbus_finalize (GObject *object)
+{
+ EphyDbus *dbus = EPHY_DBUS (object);
+
+ ephy_dbus_shutdown (dbus);
+
+ LOG ("EphyDbus finalised")
+
+ parent_class->finalize (object);
+}
+
+static void
+ephy_dbus_class_init (EphyDbusClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ object_class->finalize = ephy_dbus_finalize;
+
+ signals[CONNECTED] =
+ g_signal_new ("connected",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (EphyDbusClass, connected),
+ NULL, NULL,
+ ephy_marshal_VOID__ENUM,
+ G_TYPE_NONE,
+ 1,
+ EPHY_TYPE_DBUS_BUS);
+
+ signals[DISCONNECTED] =
+ g_signal_new ("disconnected",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (EphyDbusClass, disconnected),
+ NULL, NULL,
+ ephy_marshal_VOID__ENUM,
+ G_TYPE_NONE,
+ 1,
+ EPHY_TYPE_DBUS_BUS);
+
+ g_type_class_add_private (object_class, sizeof(EphyDbusPrivate));
+}
+
+GType
+ephy_dbus_get_type (void)
+{
+ static GType type = 0;
+
+ if (G_UNLIKELY (type == 0))
+ {
+ static const GTypeInfo our_info =
+ {
+ sizeof (EphyDbusClass),
+ NULL, /* base_init */
+ NULL, /* base_finalize */
+ (GClassInitFunc) ephy_dbus_class_init,
+ NULL,
+ NULL, /* class_data */
+ sizeof (EphyDbus),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) ephy_dbus_init
+ };
+
+ type = g_type_register_static (G_TYPE_OBJECT,
+ "EphyDbus",
+ &our_info, 0);
+ }
+
+ return type;
+}
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