/* -*- mode: C; c-file-style: "gnu" -*- */

/* dbus-misc.c  A few assorted public functions that don't fit elsewhere

 *

 * Copyright (C) 2006 Red Hat, Inc.

 * Portion Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

 * Licensed under the Academic Free License version 2.1

 * 

 * 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

 *

 */

#ifdef __SYMBIAN32__

#include "config.h"

#else

#include <config.h>

#endif

#include "dbus-misc.h"

#include "dbus-internals.h"

#include "dbus-string.h"

/**

 * @defgroup DBusMisc Miscellaneous

 * @ingroup  DBus

 * @brief Miscellaneous API that doesn't cleanly fit anywhere else

 *

 * @{

 */

/**

 * Obtains the machine UUID of the machine this process is running on.

 *

 * The returned string must be freed with dbus_free().

 * 

 * This UUID is guaranteed to remain the same until the next reboot

 * (unless the sysadmin foolishly changes it and screws themselves).

 * It will usually remain the same across reboots also, but hardware

 * configuration changes or rebuilding the machine could break that.

 *

 * The idea is that two processes with the same machine ID should be

 * able to use shared memory, UNIX domain sockets, process IDs, and other

 * features of the OS that require both processes to be running

 * on the same OS kernel instance.

 *

 * The machine ID can also be used to create unique per-machine

 * instances. For example, you could use it in bus names or

 * X selection names.

 *

 * The machine ID is preferred over the machine hostname, because

 * the hostname is frequently set to "localhost.localdomain" and

 * may also change at runtime.

 *

 * You can get the machine ID of a remote application by invoking the

 * method GetMachineId from interface org.freedesktop.DBus.Peer.

 *

 * If the remote application has the same machine ID as the one

 * returned by this function, then the remote application is on the

 * same machine as your application.

 *

 * The UUID is not a UUID in the sense of RFC4122; the details

 * are explained in the D-Bus specification.

 *

 * @returns a 32-byte-long hex-encoded UUID string, or #NULL if insufficient memory

 */

#ifdef __SYMBIAN32__

EXPORT_C 

#endif 

char*

dbus_get_local_machine_id (void)

{

  DBusString uuid;

  char *s;

  s = NULL;

  _dbus_string_init (&uuid);

  if (!_dbus_get_local_machine_uuid_encoded (&uuid) ||

      !_dbus_string_steal_data (&uuid, &s))

    {

      _dbus_string_free (&uuid);

      return FALSE;

    }

  else

    {

      _dbus_string_free (&uuid);

      return s;

    }

}

/** @} */ /* End of public API */

#ifdef DBUS_BUILD_TESTS

#ifndef DOXYGEN_SHOULD_SKIP_THIS

#include "dbus-test.h"

#include <stdlib.h>

#ifdef __SYMBIAN32__

EXPORT_C

#endif

dbus_bool_t

_dbus_misc_test (void)

{

  return TRUE;

}

#endif /* !DOXYGEN_SHOULD_SKIP_THIS */

#endif