From 96a2890a9ecca3a6392edfaaaed4487303a920d7 Mon Sep 17 00:00:00 2001 From: RX14 Date: Wed, 17 Jul 2019 14:55:47 +0100 Subject: [PATCH] Add MRF MentionPolicy for dropping posts which mention specific actors --- CHANGELOG.md | 1 + docs/config.md | 4 + .../web/activity_pub/mrf/mention_policy.ex | 24 +++++ .../activity_pub/mrf/mention_policy_test.exs | 92 +++++++++++++++++++ 4 files changed, 121 insertions(+) create mode 100644 lib/pleroma/web/activity_pub/mrf/mention_policy.ex create mode 100644 test/web/activity_pub/mrf/mention_policy_test.exs diff --git a/CHANGELOG.md b/CHANGELOG.md index f3630a1c5..0bc72a3fc 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -24,6 +24,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/). ### Added - MRF: Support for priming the mediaproxy cache (`Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy`) - MRF: Support for excluding specific domains from Transparency. +- MRF: Support for filtering posts based on who they mention (`Pleroma.Web.ActivityPub.MRF.MentionPolicy`) - Configuration: `federation_incoming_replies_max_depth` option - Mastodon API: Support for the [`tagged` filter](https://github.com/tootsuite/mastodon/pull/9755) in [`GET /api/v1/accounts/:id/statuses`](https://docs.joinmastodon.org/api/rest/accounts/#get-api-v1-accounts-id-statuses) - Mastodon API, streaming: Add support for passing the token in the `Sec-WebSocket-Protocol` header diff --git a/docs/config.md b/docs/config.md index 9a64f0ed7..5f69f8daf 100644 --- a/docs/config.md +++ b/docs/config.md @@ -101,6 +101,7 @@ config :pleroma, Pleroma.Emails.Mailer, * `Pleroma.Web.ActivityPub.MRF.EnsureRePrepended`: Rewrites posts to ensure that replies to posts with subjects do not have an identical subject and instead begin with re:. * `Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy`: Rejects posts from likely spambots by rejecting posts from new users that contain links. * `Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy`: Crawls attachments using their MediaProxy URLs so that the MediaProxy cache is primed. + * `Pleroma.Web.ActivityPub.MRF.MentionPolicy`: Drops posts mentioning configurable users. (see `:mrf_mention` section) * `public`: Makes the client API in authentificated mode-only except for user-profiles. Useful for disabling the Local Timeline and The Whole Known Network. * `quarantined_instances`: List of ActivityPub instances where private(DMs, followers-only) activities will not be send. * `managed_config`: Whenether the config for pleroma-fe is configured in this config or in ``static/config.json`` @@ -271,6 +272,9 @@ config :pleroma, :mrf_subchain, * `federated_timeline_removal`: A list of patterns which result in message being removed from federated timelines (a.k.a unlisted), each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html) * `replace`: A list of tuples containing `{pattern, replacement}`, `pattern` can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html) +## :mrf_mention +* `actors`: A list of actors, for which to drop any posts mentioning. + ## :media_proxy * `enabled`: Enables proxying of remote media to the instance’s proxy * `base_url`: The base URL to access a user-uploaded file. Useful when you want to proxy the media files via another host/CDN fronts. 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 +# 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 diff --git a/test/web/activity_pub/mrf/mention_policy_test.exs b/test/web/activity_pub/mrf/mention_policy_test.exs new file mode 100644 index 000000000..9fd9c31df --- /dev/null +++ b/test/web/activity_pub/mrf/mention_policy_test.exs @@ -0,0 +1,92 @@ +# Pleroma: A lightweight social networking server +# Copyright © 2017-2019 Pleroma Authors +# SPDX-License-Identifier: AGPL-3.0-only + +defmodule Pleroma.Web.ActivityPub.MRF.MentionPolicyTest do + use Pleroma.DataCase + + alias Pleroma.Web.ActivityPub.MRF.MentionPolicy + + test "pass filter if allow list is empty" do + Pleroma.Config.delete([:mrf_mention]) + + message = %{ + "type" => "Create", + "to" => ["https://example.com/ok"], + "cc" => ["https://example.com/blocked"] + } + + assert MentionPolicy.filter(message) == {:ok, message} + end + + describe "allow" do + test "empty" do + Pleroma.Config.put([:mrf_mention], %{actors: ["https://example.com/blocked"]}) + + message = %{ + "type" => "Create" + } + + assert MentionPolicy.filter(message) == {:ok, message} + end + + test "to" do + Pleroma.Config.put([:mrf_mention], %{actors: ["https://example.com/blocked"]}) + + message = %{ + "type" => "Create", + "to" => ["https://example.com/ok"] + } + + assert MentionPolicy.filter(message) == {:ok, message} + end + + test "cc" do + Pleroma.Config.put([:mrf_mention], %{actors: ["https://example.com/blocked"]}) + + message = %{ + "type" => "Create", + "cc" => ["https://example.com/ok"] + } + + assert MentionPolicy.filter(message) == {:ok, message} + end + + test "both" do + Pleroma.Config.put([:mrf_mention], %{actors: ["https://example.com/blocked"]}) + + message = %{ + "type" => "Create", + "to" => ["https://example.com/ok"], + "cc" => ["https://example.com/ok2"] + } + + assert MentionPolicy.filter(message) == {:ok, message} + end + end + + describe "deny" do + test "to" do + Pleroma.Config.put([:mrf_mention], %{actors: ["https://example.com/blocked"]}) + + message = %{ + "type" => "Create", + "to" => ["https://example.com/blocked"] + } + + assert MentionPolicy.filter(message) == {:reject, nil} + end + + test "cc" do + Pleroma.Config.put([:mrf_mention], %{actors: ["https://example.com/blocked"]}) + + message = %{ + "type" => "Create", + "to" => ["https://example.com/ok"], + "cc" => ["https://example.com/blocked"] + } + + assert MentionPolicy.filter(message) == {:reject, nil} + end + end +end