  def stop
    Log.add_info(request, params.inspect)

    return unless request.post?

    ApplicationHelper.delete_file_safe(Research.get_pages)
    render(:text => '')

  rescue => evar
    Log.add_error(request, evar)
    render(:text => evar.to_s)
  end
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.