1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Upload.Filter.Exiftool do
7 Strips GPS related EXIF tags and overwrites the file in place.
8 Also strips or replaces filesystem metadata e.g., timestamps.
10 @behaviour Pleroma.Upload.Filter
12 @spec filter(Pleroma.Upload.t()) :: {:ok, any()} | {:error, String.t()}
14 # Formats not compatible with exiftool at this time
15 def filter(%Pleroma.Upload{content_type: "image/heic"}), do: {:ok, :noop}
16 def filter(%Pleroma.Upload{content_type: "image/webp"}), do: {:ok, :noop}
18 def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
20 case System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true) do
21 {_response, 0} -> {:ok, :filtered}
22 {error, 1} -> {:error, error}
26 {:error, "#{__MODULE__}: #{inspect(e)}"}
30 def filter(_), do: {:ok, :noop}