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diff --git a/lib/pleroma/web/activity_pub/mrf/object_age_policy.ex b/lib/pleroma/web/activity_pub/mrf/object_age_policy.ex
index 5f111c72f..d45d2d7e3 100644
--- a/lib/pleroma/web/activity_pub/mrf/object_age_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/object_age_policy.ex
@@ -1,104 +1,109 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy do
alias Pleroma.Config
alias Pleroma.User
require Pleroma.Constants
@moduledoc "Filter activities depending on their age"
@behaviour Pleroma.Web.ActivityPub.MRF
defp check_date(%{"object" => %{"published" => published}} = message) do
with %DateTime{} = now <- DateTime.utc_now(),
{:ok, %DateTime{} = then, _} <- DateTime.from_iso8601(published),
max_ttl <- Config.get([:mrf_object_age, :threshold]),
{:ttl, false} <- {:ttl, DateTime.diff(now, then) > max_ttl} do
{:ok, message}
else
{:ttl, true} ->
{:reject, nil}
e ->
{:error, e}
end
end
defp check_reject(message, actions) do
if :reject in actions do
{:reject, "[ObjectAgePolicy]"}
else
{:ok, message}
end
end
defp check_delist(message, actions) do
if :delist in actions do
with %User{} = user <- User.get_cached_by_ap_id(message["actor"]) do
- to = List.delete(message["to"], Pleroma.Constants.as_public()) ++ [user.follower_address]
- cc = List.delete(message["cc"], user.follower_address) ++ [Pleroma.Constants.as_public()]
+ to =
+ List.delete(message["to"] || [], Pleroma.Constants.as_public()) ++
+ [user.follower_address]
+
+ cc =
+ List.delete(message["cc"] || [], user.follower_address) ++
+ [Pleroma.Constants.as_public()]
message =
message
|> Map.put("to", to)
|> Map.put("cc", cc)
{:ok, message}
else
_e ->
{:reject, "[ObjectAgePolicy] Unhandled error"}
end
else
{:ok, message}
end
end
defp check_strip_followers(message, actions) do
if :strip_followers in actions do
with %User{} = user <- User.get_cached_by_ap_id(message["actor"]) do
- to = List.delete(message["to"], user.follower_address)
- cc = List.delete(message["cc"], user.follower_address)
+ to = List.delete(message["to"] || [], user.follower_address)
+ cc = List.delete(message["cc"] || [], user.follower_address)
message =
message
|> Map.put("to", to)
|> Map.put("cc", cc)
{:ok, message}
else
_e ->
{:reject, "[ObjectAgePolicy] Unhandled error"}
end
else
{:ok, message}
end
end
@impl true
def filter(%{"type" => "Create", "published" => _} = message) do
with actions <- Config.get([:mrf_object_age, :actions]),
{:reject, _} <- check_date(message),
{:ok, message} <- check_reject(message, actions),
{:ok, message} <- check_delist(message, actions),
{:ok, message} <- check_strip_followers(message, actions) do
{:ok, message}
else
# check_date() is allowed to short-circuit the pipeline
e -> e
end
end
@impl true
def filter(message), do: {:ok, message}
@impl true
def describe do
mrf_object_age =
Config.get(:mrf_object_age)
|> Enum.into(%{})
{:ok, %{mrf_object_age: mrf_object_age}}
end
end
diff --git a/test/web/activity_pub/mrf/object_age_policy_test.exs b/test/web/activity_pub/mrf/object_age_policy_test.exs
index b0fb753bd..cf6acc9a2 100644
--- a/test/web/activity_pub/mrf/object_age_policy_test.exs
+++ b/test/web/activity_pub/mrf/object_age_policy_test.exs
@@ -1,106 +1,148 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.ObjectAgePolicyTest do
use Pleroma.DataCase
alias Pleroma.Config
alias Pleroma.User
alias Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy
alias Pleroma.Web.ActivityPub.Visibility
setup do:
clear_config(:mrf_object_age,
threshold: 172_800,
actions: [:delist, :strip_followers]
)
setup_all do
Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
:ok
end
defp get_old_message do
File.read!("test/fixtures/mastodon-post-activity.json")
|> Poison.decode!()
end
defp get_new_message do
old_message = get_old_message()
new_object =
old_message
|> Map.get("object")
|> Map.put("published", DateTime.utc_now() |> DateTime.to_iso8601())
old_message
|> Map.put("object", new_object)
end
describe "with reject action" do
+ test "works with objects with empty to or cc fields" do
+ Config.put([:mrf_object_age, :actions], [:reject])
+
+ data =
+ get_old_message()
+ |> Map.put("cc", nil)
+ |> Map.put("to", nil)
+
+ assert match?({:reject, _}, ObjectAgePolicy.filter(data))
+ end
+
test "it rejects an old post" do
Config.put([:mrf_object_age, :actions], [:reject])
data = get_old_message()
assert match?({:reject, _}, ObjectAgePolicy.filter(data))
end
test "it allows a new post" do
Config.put([:mrf_object_age, :actions], [:reject])
data = get_new_message()
assert match?({:ok, _}, ObjectAgePolicy.filter(data))
end
end
describe "with delist action" do
+ test "works with objects with empty to or cc fields" do
+ Config.put([:mrf_object_age, :actions], [:delist])
+
+ data =
+ get_old_message()
+ |> Map.put("cc", nil)
+ |> Map.put("to", nil)
+
+ {:ok, _u} = User.get_or_fetch_by_ap_id(data["actor"])
+
+ {:ok, data} = ObjectAgePolicy.filter(data)
+
+ assert Visibility.get_visibility(%{data: data}) == "unlisted"
+ end
+
test "it delists an old post" do
Config.put([:mrf_object_age, :actions], [:delist])
data = get_old_message()
{:ok, _u} = User.get_or_fetch_by_ap_id(data["actor"])
{:ok, data} = ObjectAgePolicy.filter(data)
assert Visibility.get_visibility(%{data: data}) == "unlisted"
end
test "it allows a new post" do
Config.put([:mrf_object_age, :actions], [:delist])
data = get_new_message()
{:ok, _user} = User.get_or_fetch_by_ap_id(data["actor"])
assert match?({:ok, ^data}, ObjectAgePolicy.filter(data))
end
end
describe "with strip_followers action" do
+ test "works with objects with empty to or cc fields" do
+ Config.put([:mrf_object_age, :actions], [:strip_followers])
+
+ data =
+ get_old_message()
+ |> Map.put("cc", nil)
+ |> Map.put("to", nil)
+
+ {:ok, user} = User.get_or_fetch_by_ap_id(data["actor"])
+
+ {:ok, data} = ObjectAgePolicy.filter(data)
+
+ refute user.follower_address in data["to"]
+ refute user.follower_address in data["cc"]
+ end
+
test "it strips followers collections from an old post" do
Config.put([:mrf_object_age, :actions], [:strip_followers])
data = get_old_message()
{:ok, user} = User.get_or_fetch_by_ap_id(data["actor"])
{:ok, data} = ObjectAgePolicy.filter(data)
refute user.follower_address in data["to"]
refute user.follower_address in data["cc"]
end
test "it allows a new post" do
Config.put([:mrf_object_age, :actions], [:strip_followers])
data = get_new_message()
{:ok, _u} = User.get_or_fetch_by_ap_id(data["actor"])
assert match?({:ok, ^data}, ObjectAgePolicy.filter(data))
end
end
end

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