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Add ActivityExpirationPolicy

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Egor Kislitsyn 2020-02-11 13:53:24 +04:00
parent d056f7f722
commit 241a3d744a
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4 changed files with 77 additions and 5 deletions

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@ -361,6 +361,8 @@
config :pleroma, :mrf_subchain, match_actor: %{}
config :pleroma, :mrf_activity_expiration, days: 365
config :pleroma, :mrf_vocabulary,
accept: [],
reject: []

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@ -8,11 +8,8 @@ defmodule Pleroma.Web.ActivityPub.MRF do
def filter(policies, %{} = object) do
policies
|> Enum.reduce({:ok, object}, fn
policy, {:ok, object} ->
policy.filter(object)
_, error ->
error
policy, {:ok, object} -> policy.filter(object)
_, error -> error
end)
end

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@ -0,0 +1,35 @@
# 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.ActivityExpirationPolicy do
@moduledoc "Adds expiration to all local activities"
@behaviour Pleroma.Web.ActivityPub.MRF
@impl true
def filter(%{"id" => id} = activity) do
activity =
if String.starts_with?(id, Pleroma.Web.Endpoint.url()) do
maybe_add_expiration(activity)
else
activity
end
{:ok, activity}
end
@impl true
def describe, do: {:ok, %{}}
defp maybe_add_expiration(activity) do
days = Pleroma.Config.get([:mrf_activity_expiration, :days], 365)
expires_at = NaiveDateTime.utc_now() |> Timex.shift(days: days)
with %{"expires_at" => existing_expires_at} <- activity,
:lt <- NaiveDateTime.compare(existing_expires_at, expires_at) do
activity
else
_ -> Map.put(activity, "expires_at", expires_at)
end
end
end

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@ -0,0 +1,38 @@
# 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.ActivityExpirationPolicyTest do
use ExUnit.Case, async: true
alias Pleroma.Web.ActivityPub.MRF.ActivityExpirationPolicy
@id Pleroma.Web.Endpoint.url() <> "/activities/cofe"
test "adds `expires_at` property" do
assert {:ok, %{"expires_at" => expires_at}} = ActivityExpirationPolicy.filter(%{"id" => @id})
assert Timex.diff(expires_at, NaiveDateTime.utc_now(), :days) == 364
end
test "keeps existing `expires_at` if it less than the config setting" do
expires_at = NaiveDateTime.utc_now() |> Timex.shift(days: 1)
assert {:ok, %{"expires_at" => ^expires_at}} =
ActivityExpirationPolicy.filter(%{"id" => @id, "expires_at" => expires_at})
end
test "owerwrites existing `expires_at` if it greater than the config setting" do
too_distant_future = NaiveDateTime.utc_now() |> Timex.shift(years: 2)
assert {:ok, %{"expires_at" => expires_at}} =
ActivityExpirationPolicy.filter(%{"id" => @id, "expires_at" => too_distant_future})
assert Timex.diff(expires_at, NaiveDateTime.utc_now(), :days) == 364
end
test "ignores remote activities" do
assert {:ok, activity} = ActivityExpirationPolicy.filter(%{"id" => "https://example.com/123"})
refute Map.has_key?(activity, "expires_at")
end
end