/**
* udisks_daemon_util_on_user_seat:
* @daemon: A #UDisksDaemon.
* @object: The #GDBusObject that the call is on or %NULL.
* @user: The user to check for.
*
* Checks whether the device represented by @object (if any) is plugged into
* a seat where the caller represented by @user is logged in and active.
*
* This works if @object is a drive or a block object.
*
* Returns: %TRUE if @object is on the same seat as one of @user's
* active sessions, %FALSE otherwise.
*/
gboolean
udisks_daemon_util_on_user_seat (UDisksDaemon *daemon,
UDisksObject *object,
uid_t user)
{
#if !defined(HAVE_LIBSYSTEMD_LOGIN)
/* if we don't have systemd, assume it's always the same seat */
return TRUE;
#else
gboolean ret = FALSE;
char *session = NULL;
char *seat = NULL;
const gchar *drive_seat;
UDisksObject *drive_object = NULL;
UDisksDrive *drive = NULL;
/* if we don't have logind, assume it's always the same seat */
if (!LOGIND_AVAILABLE())
return TRUE;
if (UDISKS_IS_LINUX_BLOCK_OBJECT (object))
{
UDisksLinuxBlockObject *linux_block_object;
UDisksBlock *block;
linux_block_object = UDISKS_LINUX_BLOCK_OBJECT (object);
block = udisks_object_get_block (UDISKS_OBJECT (linux_block_object));
if (block != NULL)
{
drive_object = udisks_daemon_find_object (daemon, udisks_block_get_drive (block));
g_object_unref (block);
}
}
else if (UDISKS_IS_LINUX_DRIVE_OBJECT (object))
{
drive_object = g_object_ref (object);
}
if (drive_object == NULL)
goto out;
drive = udisks_object_get_drive (UDISKS_OBJECT (drive_object));
if (drive == NULL)
goto out;
drive_seat = udisks_drive_get_seat (drive);
if (drive_seat != NULL && sd_uid_is_on_seat (user, TRUE, drive_seat) > 0)
{
ret = TRUE;
goto out;
}
out:
free (seat);
free (session);
g_clear_object (&drive_object);
g_clear_object (&drive);
return ret;
#endif /* HAVE_LIBSYSTEMD_LOGIN */
}
gboolean
gvfs_udisks2_utils_is_drive_on_our_seat (UDisksDrive *drive)
{
gboolean ret = FALSE;
const gchar *seat;
const gchar *drive_seat = NULL;
/* assume our own seat if we don't have seat-support or it doesn't work */
seat = get_seat ();
if (seat == NULL)
{
ret = TRUE;
goto out;
}
/* If the device is not tagged, assume that udisks does not have
* working seat-support... so just assume it's available at our
* seat.
*
* Note that seat support was added in udisks 1.95.0 (and so was the
* UDISKS_CHECK_VERSION macro) - for now, be compatible with older
* versions instead of bumping requirement in configure.ac
*/
#ifdef UDISKS_CHECK_VERSION
# if UDISKS_CHECK_VERSION(1,95,0)
drive_seat = udisks_drive_get_seat (drive);
# endif
#endif
if (drive_seat == NULL || strlen (drive_seat) == 0)
{
ret = TRUE;
goto out;
}
/* Otherwise, check if it's on our seat */
if (g_strcmp0 (seat, drive_seat) == 0)
ret = TRUE;
out:
return ret;
}
/**
* udisks_daemon_util_on_same_seat:
* @daemon: A #UDisksDaemon.
* @object: The #GDBusObject that the call is on or %NULL.
* @process: The process to check for.
*
* Checks whether the device represented by @object (if any) is plugged into
* a seat where the caller represented by @process is logged in.
*
* This works if @object is a drive or a block object.
*
* Returns: %TRUE if @object and @process is on the same seat, %FALSE otherwise.
*/
gboolean
udisks_daemon_util_on_same_seat (UDisksDaemon *daemon,
UDisksObject *object,
pid_t process)
{
#if !defined(HAVE_LIBSYSTEMD_LOGIN)
/* if we don't have systemd, assume it's always the same seat */
return TRUE;
#else
gboolean ret = FALSE;
char *session = NULL;
char *seat = NULL;
const gchar *drive_seat;
UDisksObject *drive_object = NULL;
UDisksDrive *drive = NULL;
/* if we don't have logind, assume it's always the same seat */
if (!LOGIND_AVAILABLE())
return TRUE;
if (UDISKS_IS_LINUX_BLOCK_OBJECT (object))
{
UDisksLinuxBlockObject *linux_block_object;
UDisksBlock *block;
linux_block_object = UDISKS_LINUX_BLOCK_OBJECT (object);
block = udisks_object_get_block (UDISKS_OBJECT (linux_block_object));
if (block != NULL)
{
drive_object = udisks_daemon_find_object (daemon, udisks_block_get_drive (block));
g_object_unref (block);
}
}
else if (UDISKS_IS_LINUX_DRIVE_OBJECT (object))
{
drive_object = g_object_ref (object);
}
if (drive_object == NULL)
goto out;
drive = udisks_object_get_drive (UDISKS_OBJECT (drive_object));
if (drive == NULL)
goto out;
/* It's not unexpected to not find a session, nor a seat associated with @process */
if (sd_pid_get_session (process, &session) == 0)
sd_session_get_seat (session, &seat);
/* If we don't know the seat of the caller, we assume the device is always on another seat */
if (seat == NULL)
goto out;
drive_seat = udisks_drive_get_seat (drive);
if (g_strcmp0 (seat, drive_seat) == 0)
{
ret = TRUE;
goto out;
}
out:
free (seat);
free (session);
g_clear_object (&drive_object);
g_clear_object (&drive);
return ret;
#endif /* HAVE_LIBSYSTEMD_LOGIN */
}
