1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dispatch.c Message dispatcher
4 * Copyright (C) 2003 CodeFactory AB
6 * Licensed under the Academic Free License version 1.2
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "connection.h"
28 #include <dbus/dbus-internals.h>
31 static int message_handler_slot;
34 send_one_message (DBusConnection *connection, void *data)
36 /* Only send messages to registered connections */
37 if (bus_connection_get_name (connection) == NULL)
40 BUS_HANDLE_OOM (dbus_connection_send_message (connection, data, NULL, NULL));
44 bus_dispatch_broadcast_message (DBusMessage *message)
46 _dbus_assert (dbus_message_get_sender (message) != NULL);
48 bus_connection_foreach (send_one_message, message);
52 static DBusHandlerResult
53 bus_dispatch_message_handler (DBusMessageHandler *handler,
54 DBusConnection *connection,
58 const char *sender, *service_name, *message_name;
60 /* Assign a sender to the message */
61 sender = bus_connection_get_name (connection);
62 BUS_HANDLE_OOM (dbus_message_set_sender (message, sender));
64 service_name = dbus_message_get_service (message);
65 message_name = dbus_message_get_name (message);
67 /* TODO: Crashes if service_name == NULL */
69 /* See if the message is to the driver */
70 if (message_name && strcmp (message_name, DBUS_MESSAGE_LOCAL_DISCONNECT) == 0)
72 bus_connection_disconnect (connection);
74 else if (strcmp (service_name, DBUS_SERVICE_DBUS) == 0)
76 bus_driver_handle_message (connection, message);
78 else if (sender == NULL)
80 _dbus_verbose ("Received message from non-registered client. Disconnecting.\n");
81 dbus_connection_disconnect (connection);
83 else if (strcmp (service_name, DBUS_SERVICE_BROADCAST) == 0)
85 bus_dispatch_broadcast_message (message);
89 DBusString service_string;
92 _dbus_string_init_const (&service_string, service_name);
93 service = bus_service_lookup (&service_string, FALSE);
97 DBusMessage *error_reply;
98 DBusString error_message;
99 const char *error_str;
101 /* Trying to send a message to a non-existant service,
102 bounce back an error message. */
104 BUS_HANDLE_OOM (_dbus_string_init (&error_message, _DBUS_INT_MAX));
106 BUS_HANDLE_OOM (_dbus_string_append (&error_message, "Service \""));
107 BUS_HANDLE_OOM (_dbus_string_append (&error_message, service_name));
108 BUS_HANDLE_OOM (_dbus_string_append (&error_message, "does not exist"));
110 _dbus_string_get_const_data (&error_message, &error_str);
111 BUS_HANDLE_OOM (error_reply = dbus_message_new_error_reply (message, DBUS_ERROR_SERVICE_DOES_NOT_EXIST,
113 _dbus_string_free (&error_message);
115 /* Dispatch the message */
116 BUS_HANDLE_OOM (dbus_connection_send_message (connection, error_reply, NULL, NULL));
117 dbus_message_unref (error_reply);
121 _dbus_assert (bus_service_get_primary_owner (service) != NULL);
123 /* Dispatch the message */
124 BUS_HANDLE_OOM (dbus_connection_send_message (bus_service_get_primary_owner (service),
125 message, NULL, NULL));
129 return DBUS_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
133 bus_dispatch_add_connection (DBusConnection *connection)
135 DBusMessageHandler *handler;
137 message_handler_slot = dbus_connection_allocate_data_slot ();
139 if (message_handler_slot < 0)
142 handler = dbus_message_handler_new (bus_dispatch_message_handler, NULL, NULL);
144 if (!dbus_connection_add_filter (connection, handler))
146 dbus_message_handler_unref (handler);
151 if (!dbus_connection_set_data (connection,
152 message_handler_slot,
154 (DBusFreeFunction)dbus_message_handler_unref))
156 dbus_connection_remove_filter (connection, handler);
157 dbus_message_handler_unref (handler);
166 bus_dispatch_remove_connection (DBusConnection *connection)
168 /* Here we tell the bus driver that we want to get off. */
169 bus_driver_remove_connection (connection);
171 dbus_connection_set_data (connection,
172 message_handler_slot,