exiftool doesn’t support JPEG XL either

[akkoma] / lib / pleroma / upload / filter / exiftool.ex

diff --git a/lib/pleroma/upload/filter/exiftool.ex b/lib/pleroma/upload/filter/exiftool.ex
index 833d8cab4fb707934a566b484da10760fa357e7d..4d3a5f551d12837c4f3eff520b7babdf9fa80408 100644 (file)
--- a/lib/pleroma/upload/filter/exiftool.ex
+++ b/lib/pleroma/upload/filter/exiftool.ex
@@ -1,17 +1,33 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 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
 
-  @type conversion :: action :: String.t() | {action :: String.t(), opts :: String.t()}
-  @type conversions :: conversion() | [conversion()]
+  @spec filter(Pleroma.Upload.t()) :: {:ok, :noop} | {:ok, :filtered} | {:error, String.t()}
+
+  # Formats not compatible with exiftool at this time
+  def filter(%Pleroma.Upload{content_type: "image/heic"}), do: {:ok, :noop}
+  def filter(%Pleroma.Upload{content_type: "image/webp"}), do: {:ok, :noop}
+  def filter(%Pleroma.Upload{content_type: "image/svg+xml"}), do: {:ok, :noop}
+  def filter(%Pleroma.Upload{content_type: "image/jxl"}), do: {:ok, :noop}
 
   def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
-    System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true)
-    :ok
+    try do
+      case System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true) do
+        {_response, 0} -> {:ok, :filtered}
+        {error, 1} -> {:error, error}
+      end
+    rescue
+      e in ErlangError ->
+        {:error, "#{__MODULE__}: #{inspect(e)}"}
+    end
   end
 
-  def filter(_), do: :ok
+  def filter(_), do: {:ok, :noop}
 end