# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
+ @moduledoc "Reject or Word-Replace messages with a keyword or regex"
+
@behaviour Pleroma.Web.ActivityPub.MRF
+ defp string_matches?(string, _) when not is_binary(string) do
+ false
+ end
+
defp string_matches?(string, pattern) when is_binary(pattern) do
String.contains?(string, pattern)
end
end
defp check_replace(%{"object" => %{"content" => content, "summary" => summary}} = message) do
+ content =
+ if is_binary(content) do
+ content
+ else
+ ""
+ end
+
+ summary =
+ if is_binary(summary) do
+ summary
+ else
+ ""
+ end
+
{content, summary} =
- Enum.reduce(Pleroma.Config.get([:mrf_keyword, :replace]), {content, summary}, fn {pattern,
- replacement},
- {content_acc,
- summary_acc} ->
- {String.replace(content_acc, pattern, replacement),
- String.replace(summary_acc, pattern, replacement)}
- end)
+ Enum.reduce(
+ Pleroma.Config.get([:mrf_keyword, :replace]),
+ {content, summary},
+ fn {pattern, replacement}, {content_acc, summary_acc} ->
+ {String.replace(content_acc, pattern, replacement),
+ String.replace(summary_acc, pattern, replacement)}
+ end
+ )
{:ok,
message
|> put_in(["object", "summary"], summary)}
end
- @impl true
- def filter(%{"object" => %{"content" => nil}} = message) do
- {:ok, message}
- end
-
@impl true
def filter(%{"type" => "Create", "object" => %{"content" => _content}} = message) do
with {:ok, message} <- check_reject(message),