From c841a4c82601d795e75dfec0007eb9e0e3580f53 Mon Sep 17 00:00:00 2001 From: Christian Persch Date: Sun, 9 Jan 2005 23:11:36 +0000 Subject: A lib/ephy-dbus.c: A lib/ephy-dbus.h: 2005-01-10 Christian Persch * configure.ac: * lib/Makefile.am: A lib/ephy-dbus.c: A lib/ephy-dbus.h: * lib/ephy-marshal.list: * src/Makefile.am: * src/ephy-shell.c: (ephy_shell_finalize), (ephy_shell_get_dbus_service): * src/ephy-shell.h: Add experimental dbus service, disabled by default. Configure with --enable-dbus to enable. --- lib/ephy-dbus.c | 398 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 398 insertions(+) create mode 100644 lib/ephy-dbus.c (limited to 'lib/ephy-dbus.c') diff --git a/lib/ephy-dbus.c b/lib/ephy-dbus.c new file mode 100644 index 000000000..3b76b0614 --- /dev/null +++ b/lib/ephy-dbus.c @@ -0,0 +1,398 @@ +/* + * 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; +} -- cgit v1.2.3