# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
- alias Pleroma.User
- alias Pleroma.Web.ActivityPub.MRF
@moduledoc "Filter activities depending on their origin instance"
@behaviour Pleroma.Web.ActivityPub.MRF
+ alias Pleroma.Config
+ alias Pleroma.FollowingRelationship
+ alias Pleroma.Object
+ alias Pleroma.User
+ alias Pleroma.Web.ActivityPub.MRF
+
require Pleroma.Constants
defp check_accept(%{host: actor_host} = _actor_info, object) do
accepts =
- Pleroma.Config.get([:mrf_simple, :accept])
+ Config.get([:mrf_simple, :accept])
|> MRF.subdomains_regex()
cond do
accepts == [] -> {:ok, object}
- actor_host == Pleroma.Config.get([Pleroma.Web.Endpoint, :url, :host]) -> {:ok, object}
+ actor_host == Config.get([Pleroma.Web.Endpoint, :url, :host]) -> {:ok, object}
MRF.subdomain_match?(accepts, actor_host) -> {:ok, object}
- true -> {:reject, nil}
+ true -> {:reject, "[SimplePolicy] host not in accept list"}
end
end
defp check_reject(%{host: actor_host} = _actor_info, object) do
rejects =
- Pleroma.Config.get([:mrf_simple, :reject])
+ Config.get([:mrf_simple, :reject])
|> MRF.subdomains_regex()
if MRF.subdomain_match?(rejects, actor_host) do
- {:reject, nil}
+ {:reject, "[SimplePolicy] host in reject list"}
else
{:ok, object}
end
)
when length(child_attachment) > 0 do
media_removal =
- Pleroma.Config.get([:mrf_simple, :media_removal])
+ Config.get([:mrf_simple, :media_removal])
|> MRF.subdomains_regex()
object =
"type" => "Create",
"object" => child_object
} = object
- ) do
+ )
+ when is_map(child_object) do
media_nsfw =
- Pleroma.Config.get([:mrf_simple, :media_nsfw])
+ Config.get([:mrf_simple, :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)
+ child_object =
+ child_object
+ |> Map.put("hashtags", Object.hashtags(child_object) ++ ["nsfw"])
+ |> Map.put("sensitive", true)
+
Map.put(object, "object", child_object)
else
object
defp check_ftl_removal(%{host: actor_host} = _actor_info, object) do
timeline_removal =
- Pleroma.Config.get([:mrf_simple, :federated_timeline_removal])
+ Config.get([:mrf_simple, :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])
+ |> MRF.subdomains_regex()
+
+ object =
+ with true <- MRF.subdomain_match?(followers_only, actor_host),
+ user <- User.get_cached_by_ap_id(object["actor"]) do
+ # Don't use Map.get/3 intentionally, these must not be nil
+ fixed_to = object["to"] || []
+ fixed_cc = object["cc"] || []
+
+ to = FollowingRelationship.followers_ap_ids(user, fixed_to)
+ cc = FollowingRelationship.followers_ap_ids(user, fixed_cc)
+
+ object
+ |> Map.put("to", intersection([user.follower_address | to], fixed_to))
+ |> Map.put("cc", intersection([user.follower_address | cc], fixed_cc))
+ else
+ _ -> object
+ end
+
+ {:ok, object}
+ end
+
defp check_report_removal(%{host: actor_host} = _actor_info, %{"type" => "Flag"} = object) do
report_removal =
- Pleroma.Config.get([:mrf_simple, :report_removal])
+ Config.get([:mrf_simple, :report_removal])
|> MRF.subdomains_regex()
if MRF.subdomain_match?(report_removal, actor_host) do
- {:reject, nil}
+ {:reject, "[SimplePolicy] host in report_removal list"}
else
{:ok, object}
end
defp check_avatar_removal(%{host: actor_host} = _actor_info, %{"icon" => _icon} = object) do
avatar_removal =
- Pleroma.Config.get([:mrf_simple, :avatar_removal])
+ Config.get([:mrf_simple, :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 =
- Pleroma.Config.get([:mrf_simple, :banner_removal])
+ Config.get([:mrf_simple, :banner_removal])
|> MRF.subdomains_regex()
if MRF.subdomain_match?(banner_removal, actor_host) do
%{host: actor_host} = URI.parse(actor)
reject_deletes =
- Pleroma.Config.get([:mrf_simple, :reject_deletes])
+ Config.get([:mrf_simple, :reject_deletes])
|> MRF.subdomains_regex()
if MRF.subdomain_match?(reject_deletes, actor_host) do
- {:reject, nil}
+ {:reject, "[SimplePolicy] host in reject_deletes list"}
else
{:ok, object}
end
{:ok, object} <- check_media_removal(actor_info, object),
{: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}
else
- _e -> {:reject, nil}
+ {:reject, nil} -> {:reject, "[SimplePolicy]"}
+ {:reject, _} = e -> e
+ _ -> {:reject, "[SimplePolicy]"}
end
end
{:ok, object} <- check_banner_removal(actor_info, object) do
{:ok, object}
else
- _e -> {:reject, nil}
+ {:reject, nil} -> {:reject, "[SimplePolicy]"}
+ {:reject, _} = e -> e
+ _ -> {:reject, "[SimplePolicy]"}
end
end
@impl true
def describe do
- exclusions = Pleroma.Config.get([:instance, :mrf_transparency_exclusions])
+ exclusions = Config.get([:mrf, :transparency_exclusions])
mrf_simple =
- Pleroma.Config.get(:mrf_simple)
+ Config.get(:mrf_simple)
|> 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,
+ type: {:list, :string},
+ description: "List of instances to strip media attachments from",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :media_nsfw,
+ label: "Media NSFW",
+ type: {:list, :string},
+ description: "List of instances to tag all media as NSFW (sensitive) from",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :federated_timeline_removal,
+ type: {:list, :string},
+ description:
+ "List of instances to remove from the Federated (aka The Whole Known Network) Timeline",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :reject,
+ type: {:list, :string},
+ description: "List of instances to reject activities from (except deletes)",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :accept,
+ type: {:list, :string},
+ description: "List of instances to only accept activities from (except deletes)",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :followers_only,
+ type: {:list, :string},
+ description: "Force posts from the given instances to be visible by followers only",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :report_removal,
+ type: {:list, :string},
+ description: "List of instances to reject reports from",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :avatar_removal,
+ type: {:list, :string},
+ description: "List of instances to strip avatars from",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :banner_removal,
+ type: {:list, :string},
+ description: "List of instances to strip banners from",
+ suggestions: ["example.com", "*.example.com"]
+ },
+ %{
+ key: :reject_deletes,
+ type: {:list, :string},
+ description: "List of instances to reject deletions from",
+ suggestions: ["example.com", "*.example.com"]
+ }
+ ]
+ }
+ end
end
projects / akkoma / blobdiff