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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Upload.Filter.Exiftool do
   6   @moduledoc """
   7   Strips GPS related EXIF tags and overwrites the file in place.
   8   Also strips or replaces filesystem metadata e.g., timestamps.
   9   """
  10   @behaviour Pleroma.Upload.Filter
  11
  12   @type conversion :: action :: String.t() | {action :: String.t(), opts :: String.t()}
  13   @type conversions :: conversion() | [conversion()]
  14
  15   def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
  16     System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true)
  17     :ok
  18   end
  19
  20   def filter(_), do: :ok
  21 end