Merge branch 'command-available-check' into 'develop'
[akkoma] / lib / pleroma / upload / filter / exiftool.ex
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 @spec filter(Pleroma.Upload.t()) :: :ok | {:error, String.t()}
13 def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
14 try do
15 case System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true) do
16 {_response, 0} -> :ok
17 {error, 1} -> {:error, error}
18 end
19 rescue
20 _e in ErlangError ->
21 {:error, "exiftool command not found"}
22 end
23 end
24
25 def filter(_), do: :ok
26 end