Merge branch 'feature/upload-filter-exiftool' into 'develop'

Add Pleroma.Upload.Filter.Exiftool

Closes #1935

See merge request pleroma/pleroma!2744

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/pleroma/upload/filter/exiftool.ex b/lib/pleroma/upload/filter/exiftool.ex
new file mode 100644
index 000000000..c7fb6aefa
--- /dev/null
+++ b/lib/pleroma/upload/filter/exiftool.ex
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Upload.Filter.Exiftool do
+  @moduledoc """
+  Strips GPS related EXIF tags and overwrites the file in place.
+  Also strips or replaces filesystem metadata e.g., timestamps.
+  """
+  @behaviour Pleroma.Upload.Filter
+
+  def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
+    System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true)
+    :ok
+  end
+
+  def filter(_), do: :ok
+end