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nix-packages/akkoma/require-image-description.patch

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2023-01-06 20:12:46 +00:00
diff --git a/lib/pleroma/web/activity_pub/mrf/require_image_description.ex b/lib/pleroma/web/activity_pub/mrf/require_image_description.ex
new file mode 100644
index 000000000..67390e613
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/mrf/require_image_description.ex
@@ -0,0 +1,45 @@
+defmodule Pleroma.Web.ActivityPub.MRF.RequireImageDescription do
+ @moduledoc "MRF policy which removes media without image description"
+ @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+
+ def is_valid_attachment(
+ %{"name" => name} = _
+ ), do: is_binary(name) and !String.equivalent?(name, "")
+ def is_valid_attachment(_), do: false
+
+ def mark_sensitive(object) do
+ object |> Map.put("sensitive", true)
+ object
+ end
+
+ def correct_attachment(object) do
+ if is_valid_attachment(object) do
+ object
+ else
+ mark_sensitive(object)
+ end
+ end
+
+ @impl true
+ def filter(
+ %{"type" => "Create", "object" => %{"attachment" => attachments} = object } = message
+ ) when is_list(attachments) and length(attachments) > 0 do
+ if attachments |> Enum.all?(fn(attach) -> is_valid_attachment(attach) end) do
+ {:ok, message}
+ else
+ attachments = attachments |> Enum.map(fn v -> correct_attachment(v) end)
+ object = object |> Map.update("summary", "Missing media descriptions", fn v -> v <> "; Missing media descriptions" end)
+ |> Map.put("attachment", attachments)
+ message = message |> Map.put("object", object)
+ {:ok, message}
+ end
+ end
+
+ @impl true
+ def filter(message), do: {:ok, message}
+
+ @impl true
+ def describe do
+ {:ok, %{mrf_sample: %{content: "<br/><emph>This post contained media without content description. Offending media has been removed from this post.</emph>"}}}
+ end
+end