+ if not User.locked?(followed) do
+ ActivityPub.accept(%{
+ to: [follower.ap_id],
+ actor: followed.ap_id,
+ object: data,
+ local: true
+ })
+
+ User.follow(follower, followed)
+ end
+
+ {:ok, activity}
+ else
+ _e -> :error
+ end
+ end
+
+ defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
+ with true <- id =~ "follows",
+ %User{local: true} = follower <- User.get_cached_by_ap_id(follower_id),
+ %Activity{} = activity <- Utils.fetch_latest_follow(follower, followed) do
+ {:ok, activity}
+ else
+ _ -> {:error, nil}
+ end
+ end
+
+ defp mastodon_follow_hack(_), do: {:error, nil}
+
+ defp get_follow_activity(follow_object, followed) do
+ with object_id when not is_nil(object_id) <- Utils.get_ap_id(follow_object),
+ {_, %Activity{} = activity} <- {:activity, Activity.get_by_ap_id(object_id)} do
+ {:ok, activity}
+ else
+ # Can't find the activity. This might a Mastodon 2.3 "Accept"
+ {:activity, nil} ->
+ mastodon_follow_hack(follow_object, followed)
+
+ _ ->
+ {:error, nil}
+ end
+ end
+
+ def handle_incoming(
+ %{"type" => "Accept", "object" => follow_object, "actor" => actor, "id" => id} = data
+ ) do
+ with actor <- get_actor(data),
+ %User{} = followed <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, follow_activity} <- get_follow_activity(follow_object, followed),
+ {:ok, follow_activity} <- Utils.update_follow_state(follow_activity, "accept"),
+ %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
+ {:ok, activity} <-
+ ActivityPub.accept(%{
+ to: follow_activity.data["to"],
+ type: "Accept",
+ actor: followed.ap_id,
+ object: follow_activity.data["id"],
+ local: false
+ }) do
+ if not User.following?(follower, followed) do
+ {:ok, follower} = User.follow(follower, followed)
+ end
+
+ {:ok, activity}
+ else
+ _e -> :error
+ end
+ end
+
+ def handle_incoming(
+ %{"type" => "Reject", "object" => follow_object, "actor" => actor, "id" => id} = data
+ ) do
+ with actor <- get_actor(data),
+ %User{} = followed <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, follow_activity} <- get_follow_activity(follow_object, followed),
+ {:ok, follow_activity} <- Utils.update_follow_state(follow_activity, "reject"),
+ %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
+ {:ok, activity} <-
+ ActivityPub.accept(%{
+ to: follow_activity.data["to"],
+ type: "Accept",
+ actor: followed.ap_id,
+ object: follow_activity.data["id"],
+ local: false
+ }) do
+ User.unfollow(follower, followed)