# Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
@moduledoc "Filter activities depending on their origin instance"
- @behaviour Pleroma.Web.ActivityPub.MRF
+ @behaviour Pleroma.Web.ActivityPub.MRF.Policy
alias Pleroma.Config
alias Pleroma.FollowingRelationship
defp check_accept(%{host: actor_host} = _actor_info, object) do
accepts =
- Config.get([:mrf_simple, :accept])
+ instance_list(:accept)
|> MRF.subdomains_regex()
cond do
defp check_reject(%{host: actor_host} = _actor_info, object) do
rejects =
- Config.get([:mrf_simple, :reject])
+ instance_list(:reject)
|> MRF.subdomains_regex()
if MRF.subdomain_match?(rejects, actor_host) do
)
when length(child_attachment) > 0 do
media_removal =
- Config.get([:mrf_simple, :media_removal])
+ instance_list(:media_removal)
|> MRF.subdomains_regex()
object =
%{host: actor_host} = _actor_info,
%{
"type" => "Create",
- "object" => child_object
+ "object" => %{} = _child_object
} = object
) do
media_nsfw =
- Config.get([:mrf_simple, :media_nsfw])
+ instance_list(:media_nsfw)
|> MRF.subdomains_regex()
object =
if MRF.subdomain_match?(media_nsfw, actor_host) do
- tags = (child_object["tag"] || []) ++ ["nsfw"]
- child_object = Map.put(child_object, "tag", tags)
- child_object = Map.put(child_object, "sensitive", true)
- Map.put(object, "object", child_object)
+ Kernel.put_in(object, ["object", "sensitive"], true)
else
object
end
defp check_ftl_removal(%{host: actor_host} = _actor_info, object) do
timeline_removal =
- Config.get([:mrf_simple, :federated_timeline_removal])
+ instance_list(:federated_timeline_removal)
|> MRF.subdomains_regex()
object =
{:ok, object}
end
+ defp intersection(list1, list2) do
+ list1 -- list1 -- list2
+ end
+
defp check_followers_only(%{host: actor_host} = _actor_info, object) do
followers_only =
- Config.get([:mrf_simple, :followers_only])
+ instance_list(:followers_only)
|> MRF.subdomains_regex()
object =
cc = FollowingRelationship.followers_ap_ids(user, fixed_cc)
object
- |> Map.put("to", [user.follower_address] ++ to)
- |> Map.put("cc", cc)
+ |> Map.put("to", intersection([user.follower_address | to], fixed_to))
+ |> Map.put("cc", intersection([user.follower_address | cc], fixed_cc))
else
_ -> object
end
defp check_report_removal(%{host: actor_host} = _actor_info, %{"type" => "Flag"} = object) do
report_removal =
- Config.get([:mrf_simple, :report_removal])
+ instance_list(:report_removal)
|> MRF.subdomains_regex()
if MRF.subdomain_match?(report_removal, actor_host) do
defp check_avatar_removal(%{host: actor_host} = _actor_info, %{"icon" => _icon} = object) do
avatar_removal =
- Config.get([:mrf_simple, :avatar_removal])
+ instance_list(:avatar_removal)
|> MRF.subdomains_regex()
if MRF.subdomain_match?(avatar_removal, actor_host) do
defp check_banner_removal(%{host: actor_host} = _actor_info, %{"image" => _image} = object) do
banner_removal =
- Config.get([:mrf_simple, :banner_removal])
+ instance_list(:banner_removal)
|> MRF.subdomains_regex()
if MRF.subdomain_match?(banner_removal, actor_host) do
defp check_banner_removal(_actor_info, object), do: {:ok, object}
+ defp check_object(%{"object" => object} = activity) do
+ with {:ok, _object} <- filter(object) do
+ {:ok, activity}
+ end
+ end
+
+ defp check_object(object), do: {:ok, object}
+
+ defp instance_list(config_key) do
+ Config.get([:mrf_simple, config_key])
+ |> MRF.instance_list_from_tuples()
+ end
+
@impl true
def filter(%{"type" => "Delete", "actor" => actor} = object) do
%{host: actor_host} = URI.parse(actor)
reject_deletes =
- Config.get([:mrf_simple, :reject_deletes])
+ instance_list(:reject_deletes)
|> MRF.subdomains_regex()
if MRF.subdomain_match?(reject_deletes, actor_host) do
{:ok, object} <- check_media_nsfw(actor_info, object),
{:ok, object} <- check_ftl_removal(actor_info, object),
{:ok, object} <- check_followers_only(actor_info, object),
- {:ok, object} <- check_report_removal(actor_info, object) do
+ {:ok, object} <- check_report_removal(actor_info, object),
+ {:ok, object} <- check_object(object) do
{:ok, object}
else
{:reject, nil} -> {:reject, "[SimplePolicy]"}
end
end
+ def filter(object) when is_binary(object) do
+ uri = URI.parse(object)
+
+ with {:ok, object} <- check_accept(uri, object),
+ {:ok, object} <- check_reject(uri, object) do
+ {:ok, object}
+ else
+ {:reject, nil} -> {:reject, "[SimplePolicy]"}
+ {:reject, _} = e -> e
+ _ -> {:reject, "[SimplePolicy]"}
+ end
+ end
+
def filter(object), do: {:ok, object}
@impl true
mrf_simple =
Config.get(:mrf_simple)
- |> Enum.map(fn {k, v} -> {k, Enum.reject(v, fn v -> v in exclusions end)} end)
+ |> Enum.map(fn {k, v} -> {k, Enum.reject(v, fn {v, _} -> v in exclusions end)} end)
|> Enum.into(%{})
{:ok, %{mrf_simple: mrf_simple}}
end
+
+ @impl true
+ def config_description do
+ %{
+ key: :mrf_simple,
+ related_policy: "Pleroma.Web.ActivityPub.MRF.SimplePolicy",
+ label: "MRF Simple",
+ description: "Simple ingress policies",
+ children:
+ [
+ %{
+ key: :media_removal,
+ description:
+ "List of instances to strip media attachments from and the reason for doing so"
+ },
+ %{
+ key: :media_nsfw,
+ label: "Media NSFW",
+ description:
+ "List of instances to tag all media as NSFW (sensitive) from and the reason for doing so"
+ },
+ %{
+ key: :federated_timeline_removal,
+ description:
+ "List of instances to remove from the Federated (aka The Whole Known Network) Timeline and the reason for doing so"
+ },
+ %{
+ key: :reject,
+ description:
+ "List of instances to reject activities from (except deletes) and the reason for doing so"
+ },
+ %{
+ key: :accept,
+ description:
+ "List of instances to only accept activities from (except deletes) and the reason for doing so"
+ },
+ %{
+ key: :followers_only,
+ description:
+ "Force posts from the given instances to be visible by followers only and the reason for doing so"
+ },
+ %{
+ key: :report_removal,
+ description: "List of instances to reject reports from and the reason for doing so"
+ },
+ %{
+ key: :avatar_removal,
+ description: "List of instances to strip avatars from and the reason for doing so"
+ },
+ %{
+ key: :banner_removal,
+ description: "List of instances to strip banners from and the reason for doing so"
+ },
+ %{
+ key: :reject_deletes,
+ description: "List of instances to reject deletions from and the reason for doing so"
+ }
+ ]
+ |> Enum.map(fn setting ->
+ Map.merge(
+ setting,
+ %{
+ type: {:list, :tuple},
+ key_placeholder: "instance",
+ value_placeholder: "reason",
+ suggestions: [{"example.com", "Some reason"}, {"*.example.com", "Another reason"}]
+ }
+ )
+ end)
+ }
+ end
end
projects / akkoma / blobdiff