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/* -*- mode: C; c-file-style: "gnu" -*- */
/* bus.c Bus client (driver)
*
* Copyright (C) 2003 CodeFactory AB
*
* Licensed under the Academic Free License version 1.2
*
* 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
*
*/
#include "connection.h"
#include "driver.h"
#include "services.h"
#include <dbus/dbus-internals.h>
#include <dbus/dbus-string.h>
#include <string.h>
#define BUS_DRIVER_SERVICE_NAME "org.freedesktop.DBus"
#define BUS_DRIVER_HELLO_NAME "org.freedesktop.DBus.Hello"
#define BUS_DRIVER_WELCOME_NAME "org.freedesktop.DBus.Welcome"
static dbus_bool_t bus_driver_send_welcome_message (DBusConnection *connection,
DBusMessage *hello_message);
static dbus_bool_t
create_unique_client_name (const char *name, DBusString *str)
{
int i, len;
if (!_dbus_string_init (str, _DBUS_INT_MAX))
return FALSE;
if (!_dbus_string_append (str, name))
return FALSE;
len = _dbus_string_get_length (str);
i = 0;
while (1)
{
if (!_dbus_string_append_int (str, i))
{
_dbus_string_free (str);
return FALSE;
}
/* Check if a client with the name exists */
if (bus_service_lookup (str, FALSE) == NULL)
break;
_dbus_string_set_length (str, len);
i++;
}
return TRUE;
}
static dbus_bool_t
bus_driver_handle_hello_message (DBusConnection *connection,
DBusMessage *message)
{
DBusResultCode result;
char *name;
DBusString unique_name;
BusService *service;
dbus_bool_t retval;
result = dbus_message_get_fields (message,
DBUS_TYPE_STRING, &name,
0);
/* FIXME: Handle this in a better way */
if (result != DBUS_RESULT_SUCCESS)
return FALSE;
if (!create_unique_client_name (name, &unique_name))
return FALSE;
/* Create the service */
service = bus_service_lookup (&unique_name, TRUE);
if (!service)
{
_dbus_string_free (&unique_name);
return FALSE;
}
/* FIXME: Error checks from this point */
/* Add the connection as the owner */
bus_service_add_owner (service, connection);
bus_connection_set_name (connection, &unique_name);
/* We need to assign the sender to the message here */
_dbus_message_set_sender (message,
bus_connection_get_name (connection));
_dbus_string_free (&unique_name);
retval = bus_driver_send_welcome_message (connection, message);
return retval;
}
static dbus_bool_t
bus_driver_send_welcome_message (DBusConnection *connection,
DBusMessage *hello_message)
{
DBusMessage *welcome;
const char *name;
dbus_bool_t retval;
name = bus_connection_get_name (connection);
_dbus_assert (name != NULL);
welcome = dbus_message_new_reply (BUS_DRIVER_WELCOME_NAME,
hello_message);
if (welcome == NULL)
return FALSE;
/* FIXME: Return value */
_dbus_message_set_sender (welcome, BUS_DRIVER_SERVICE_NAME);
if (!dbus_message_append_fields (welcome,
DBUS_TYPE_STRING, name,
NULL))
{
dbus_message_unref (welcome);
return FALSE;
}
retval = dbus_connection_send_message (connection, welcome, NULL, NULL);
dbus_message_unref (welcome);
return retval;
}
/* This is where all the magic occurs */
static DBusHandlerResult
bus_driver_message_handler (DBusMessageHandler *handler,
DBusConnection *connection,
DBusMessage *message,
void *user_data)
{
const char *service, *name;
service = dbus_message_get_service (message);
name = dbus_message_get_name (message);
_dbus_message_set_sender (message,
bus_connection_get_name (connection));
if (strcmp (service, BUS_DRIVER_SERVICE_NAME) == 0)
{
if (strcmp (name, BUS_DRIVER_HELLO_NAME) == 0)
bus_driver_handle_hello_message (connection, message);
}
else
{
/* FIXME: Dispatch the message :-) */
}
return DBUS_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
}
dbus_bool_t
bus_driver_add_connection (DBusConnection *connection)
{
DBusMessageHandler *handler;
handler = dbus_message_handler_new (bus_driver_message_handler, NULL, NULL);
if (!dbus_connection_add_filter (connection, handler))
{
dbus_message_handler_unref (handler);
return FALSE;
}
_dbus_verbose ("D-Bus driver on board...\n");
return TRUE;
}
void
bus_driver_remove_connection (DBusConnection *connection)
{
BusService *service;
DBusString service_name;
const char *name;
name = bus_connection_get_name (connection);
if (name == NULL)
return;
_dbus_string_init_const (&service_name, name);
service = bus_service_lookup (&service_name, FALSE);
if (service)
bus_service_free (service);
}
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