FileTransfer::checkPath

protected final FileTransfer::checkPath($path)

protected final function checkPath($path) {
  $full_jail = $this->chroot . $this->jail;
  $full_path = drupal_realpath(substr($this->chroot . $path, 0, strlen($full_jail)));
  $full_path = $this->fixRemotePath($full_path, FALSE);
  if ($full_jail !== $full_path) {
    throw new FileTransferException('@directory is outside of the @jail', NULL, array('@directory' => $path, '@jail' => $this->jail));
  }
}