X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Fmrf%2Fhellthread_policy.ex;h=a699f6a7e89c0242942ab5011fe991ce86e46670;hb=a536f515dd2334e723f4e4c593724760511c5c1b;hp=e4fb0b5b0e14245ccd8d124ea1a7f6d5af411d7c;hpb=89fbed88212657e3dcd4bbcb2c0718b07802037f;p=akkoma
diff --git a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
index e4fb0b5b0..a699f6a7e 100644
--- a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
@@ -1,22 +1,90 @@
# Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors
+# Copyright © 2017-2019 Pleroma Authors
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
+ alias Pleroma.User
+ @moduledoc "Block messages with too much mentions (configurable)"
+
@behaviour Pleroma.Web.ActivityPub.MRF
+ defp delist_message(message, threshold) when threshold > 0 do
+ follower_collection = User.get_cached_by_ap_id(message["actor"]).follower_address
+
+ follower_collection? = Enum.member?(message["to"] ++ message["cc"], follower_collection)
+
+ message =
+ case get_recipient_count(message) do
+ {:public, recipients}
+ when follower_collection? and recipients > threshold ->
+ message
+ |> Map.put("to", [follower_collection])
+ |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+
+ {:public, recipients} when recipients > threshold ->
+ message
+ |> Map.put("to", [])
+ |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+
+ _ ->
+ message
+ end
+
+ {:ok, message}
+ end
+
+ defp delist_message(message, _threshold), do: {:ok, message}
+
+ defp reject_message(message, threshold) when threshold > 0 do
+ with {_, recipients} <- get_recipient_count(message) do
+ if recipients > threshold do
+ {:reject, nil}
+ else
+ {:ok, message}
+ end
+ end
+ end
+
+ defp reject_message(message, _threshold), do: {:ok, message}
+
+ defp get_recipient_count(message) do
+ recipients = (message["to"] || []) ++ (message["cc"] || [])
+ follower_collection = User.get_cached_by_ap_id(message["actor"]).follower_address
+
+ if Enum.member?(recipients, "https://www.w3.org/ns/activitystreams#Public") do
+ recipients =
+ recipients
+ |> List.delete("https://www.w3.org/ns/activitystreams#Public")
+ |> List.delete(follower_collection)
+
+ {:public, length(recipients)}
+ else
+ recipients =
+ recipients
+ |> List.delete(follower_collection)
+
+ {:not_public, length(recipients)}
+ end
+ end
+
@impl true
- def filter(%{"type" => "Create"} = object) do
- threshold = Pleroma.Config.get([:mrf_hellthread, :threshold])
- recipients = (object["to"] || []) ++ (object["cc"] || [])
+ def filter(%{"type" => "Create"} = message) do
+ reject_threshold =
+ Pleroma.Config.get(
+ [:mrf_hellthread, :reject_threshold],
+ Pleroma.Config.get([:mrf_hellthread, :threshold])
+ )
+
+ delist_threshold = Pleroma.Config.get([:mrf_hellthread, :delist_threshold])
- if length(recipients) > threshold do
- {:reject, nil}
+ with {:ok, message} <- reject_message(message, reject_threshold),
+ {:ok, message} <- delist_message(message, delist_threshold) do
+ {:ok, message}
else
- {:ok, object}
+ _e -> {:reject, nil}
end
end
@impl true
- def filter(object), do: {:ok, object}
+ def filter(message), do: {:ok, message}
end