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/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-bus.h Convenience functions for communicating with the bus.
*
* 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 "dbus-bus.h"
#include "dbus-protocol.h"
/**
* @defgroup DBusBus Convenience functinos for communicating with the bus.
* @ingroup DBus
* @brief Convenience functinos for communicating with the bus.
*
* @{
*/
/**
* Registers a connection with the bus. This is needed to send messages
* to other clients.
*
* @param connection The connection
* @param result address where a result code can be returned.
* @returns the service name of which the client is known as.
*/
char *
dbus_bus_register_client (DBusConnection *connection,
DBusResultCode *result)
{
DBusMessage *message, *reply;
DBusResultCode code;
char *name;
message = dbus_message_new (DBUS_SERVICE_DBUS,
DBUS_MESSAGE_HELLO);
if (!message)
{
dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
return NULL;
}
reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
dbus_message_unref (message);
if (!reply)
return NULL;
code = dbus_message_get_fields (reply,
DBUS_TYPE_STRING, &name,
0);
if (code != DBUS_RESULT_SUCCESS)
{
dbus_set_result (result, code);
return NULL;
}
dbus_set_result (result, DBUS_RESULT_SUCCESS);
return name;
}
/**
* Asks the bus to try to acquire a certain service.
*
* @param connection the connection
* @param service_name the service name
* @param flags flags
* @param result address where a result code can be returned.
* @returns a result code.
*/
int
dbus_bus_acquire_service (DBusConnection *connection,
const char *service_name,
unsigned int flags,
DBusResultCode *result)
{
DBusMessage *message, *reply;
int service_result;
DBusResultCode code;
message = dbus_message_new (DBUS_SERVICE_DBUS,
DBUS_MESSAGE_ACQUIRE_SERVICE);
if (!message)
{
dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
return -1;
}
if (!dbus_message_append_fields (message,
DBUS_TYPE_STRING, service_name,
DBUS_TYPE_UINT32, flags,
0))
{
dbus_message_unref (message);
dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
return -1;
}
reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
dbus_message_unref (message);
if (!reply)
return -1;
code = dbus_message_get_fields (reply,
DBUS_TYPE_UINT32, &service_result,
0);
if (code != DBUS_RESULT_SUCCESS)
{
dbus_set_result (result, code);
return -1;
}
dbus_set_result (result, DBUS_RESULT_SUCCESS);
return service_result;
}
/**
* Checks whether a certain service exists.
*
* @param connection the connection
* @param service_name the service name
* @param result address where a result code can be returned.
* @returns #TRUE if the service exists, #FALSE otherwise.
*/
dbus_bool_t
dbus_bus_service_exists (DBusConnection *connection,
const char *service_name,
DBusResultCode *result)
{
DBusMessage *message, *reply;
unsigned int exists;
DBusResultCode code;
message = dbus_message_new (DBUS_SERVICE_DBUS,
DBUS_MESSAGE_SERVICE_EXISTS);
if (!message)
{
dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
return FALSE;
}
if (!dbus_message_append_fields (message,
DBUS_TYPE_STRING, service_name,
0))
{
dbus_message_unref (message);
dbus_set_result (result, DBUS_RESULT_NO_MEMORY);
return FALSE;
}
reply = dbus_connection_send_message_with_reply_and_block (connection, message, -1, result);
dbus_message_unref (message);
if (!reply)
return FALSE;
code = dbus_message_get_fields (reply,
DBUS_TYPE_UINT32, &exists,
0);
if (code != DBUS_RESULT_SUCCESS)
{
dbus_set_result (result, code);
return FALSE;
}
dbus_set_result (result, DBUS_RESULT_SUCCESS);
return (result != FALSE);
}
/** @} */
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