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