diff --git a/changelog.d/3897.add b/changelog.d/3897.add
new file mode 100644
index 000000000..5c4402f45
--- /dev/null
+++ b/changelog.d/3897.add
@@ -0,0 +1 @@
+OnlyMedia Upload Filter
diff --git a/docs/configuration/cheatsheet.md b/docs/configuration/cheatsheet.md
index 70abe3e0c..026753f38 100644
--- a/docs/configuration/cheatsheet.md
+++ b/docs/configuration/cheatsheet.md
@@ -671,6 +671,12 @@ This filter reads the ImageDescription and iptc:Caption-Abstract fields with Exi
No specific configuration.
+#### Pleroma.Upload.Filter.OnlyMedia
+
+This filter rejects uploads that are not identified with Content-Type matching audio/*, image/*, or video/*
+
+No specific configuration.
+
#### Pleroma.Upload.Filter.Mogrify
* `args`: List of actions for the `mogrify` command like `"strip"` or `["strip", "auto-orient", {"implode", "1"}]`.
diff --git a/lib/pleroma/upload/filter.ex b/lib/pleroma/upload/filter.ex
index 717f06621..809bc6e70 100644
--- a/lib/pleroma/upload/filter.ex
+++ b/lib/pleroma/upload/filter.ex
@@ -38,9 +38,9 @@ def filter([filter | rest], upload) do
{:ok, :noop} ->
filter(rest, upload)
- error ->
- Logger.error("#{__MODULE__}: Filter #{filter} failed: #{inspect(error)}")
- error
+ {:error, e} ->
+ Logger.error("#{__MODULE__}: Filter #{filter} failed: #{inspect(e)}")
+ {:error, e}
end
end
end
diff --git a/lib/pleroma/upload/filter/only_media.ex b/lib/pleroma/upload/filter/only_media.ex
new file mode 100644
index 000000000..a9caeba67
--- /dev/null
+++ b/lib/pleroma/upload/filter/only_media.ex
@@ -0,0 +1,20 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Upload.Filter.OnlyMedia do
+ @behaviour Pleroma.Upload.Filter
+ alias Pleroma.Upload
+
+ def filter(%Upload{content_type: content_type}) do
+ [type, _subtype] = String.split(content_type, "/")
+
+ if type in ["image", "video", "audio"] do
+ {:ok, :noop}
+ else
+ {:error, "Disallowed content-type: #{content_type}"}
+ end
+ end
+
+ def filter(_), do: {:ok, :noop}
+end
diff --git a/test/pleroma/upload/filter/only_media_test.exs b/test/pleroma/upload/filter/only_media_test.exs
new file mode 100644
index 000000000..75be070a1
--- /dev/null
+++ b/test/pleroma/upload/filter/only_media_test.exs
@@ -0,0 +1,32 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Upload.Filter.OnlyMediaTest do
+ use Pleroma.DataCase, async: true
+
+ alias Pleroma.Upload
+ alias Pleroma.Upload.Filter.OnlyMedia
+
+ test "Allows media Content-Type" do
+ ["audio/mpeg", "image/jpeg", "video/mp4"]
+ |> Enum.each(fn type ->
+ upload = %Upload{
+ content_type: type
+ }
+
+ assert {:ok, :noop} = OnlyMedia.filter(upload)
+ end)
+ end
+
+ test "Disallows non-media Content-Type" do
+ ["application/javascript", "application/pdf", "text/html"]
+ |> Enum.each(fn type ->
+ upload = %Upload{
+ content_type: type
+ }
+
+ assert {:error, _} = OnlyMedia.filter(upload)
+ end)
+ end
+end