From 96a2890a9ecca3a6392edfaaaed4487303a920d7 Mon Sep 17 00:00:00 2001
From: RX14 <steph@rx14.co.uk>
Date: Wed, 17 Jul 2019 14:55:47 +0100
Subject: Add MRF MentionPolicy for dropping posts which mention specific
 actors

---
 lib/pleroma/web/activity_pub/mrf/mention_policy.ex | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 lib/pleroma/web/activity_pub/mrf/mention_policy.ex

(limited to 'lib')

diff --git a/lib/pleroma/web/activity_pub/mrf/mention_policy.ex b/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
new file mode 100644
index 000000000..1842e1aeb
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
@@ -0,0 +1,24 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.MentionPolicy do
+  @moduledoc "Block messages which mention a user"
+
+  @behaviour Pleroma.Web.ActivityPub.MRF
+
+  @impl true
+  def filter(%{"type" => "Create"} = message) do
+    reject_actors = Pleroma.Config.get([:mrf_mention, :actors], [])
+    recipients = (message["to"] || []) ++ (message["cc"] || [])
+
+    if Enum.any?(recipients, fn recipient -> Enum.member?(reject_actors, recipient) end) do
+      {:reject, nil}
+    else
+      {:ok, message}
+    end
+  end
+
+  @impl true
+  def filter(message), do: {:ok, message}
+end
-- 
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