+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
alias Pleroma.User
+ @moduledoc "Filter activities depending on their origin instance"
+ @behaviour Pleroma.Web.ActivityPub.MRF
+
+ defp check_accept(%{host: actor_host} = _actor_info, object) do
+ accepts = Pleroma.Config.get([:mrf_simple, :accept])
- @mrf_policy Application.get_env(:pleroma, :mrf_simple)
+ cond do
+ accepts == [] -> {:ok, object}
+ actor_host == Pleroma.Config.get([Pleroma.Web.Endpoint, :url, :host]) -> {:ok, object}
+ Enum.member?(accepts, actor_host) -> {:ok, object}
+ true -> {:reject, nil}
+ end
+ end
- @reject Keyword.get(@mrf_policy, :reject)
- defp check_reject(actor_info, object) do
- if actor_info.host in @reject do
+ defp check_reject(%{host: actor_host} = _actor_info, object) do
+ if Enum.member?(Pleroma.Config.get([:mrf_simple, :reject]), actor_host) do
{:reject, nil}
else
{:ok, object}
end
end
- @media_removal Keyword.get(@mrf_policy, :media_removal)
- defp check_media_removal(actor_info, object) do
- if actor_info.host in @media_removal do
- child_object = Map.delete(object["object"], "attachment")
- object = Map.put(object, "object", child_object)
- {:ok, object}
+ defp check_media_removal(
+ %{host: actor_host} = _actor_info,
+ %{"type" => "Create", "object" => %{"attachment" => child_attachment}} = object
+ )
+ when length(child_attachment) > 0 do
+ object =
+ if Enum.member?(Pleroma.Config.get([:mrf_simple, :media_removal]), actor_host) do
+ child_object = Map.delete(object["object"], "attachment")
+ Map.put(object, "object", child_object)
+ else
+ object
+ end
+
+ {:ok, object}
+ end
+
+ defp check_media_removal(_actor_info, object), do: {:ok, object}
+
+ defp check_media_nsfw(
+ %{host: actor_host} = _actor_info,
+ %{
+ "type" => "Create",
+ "object" => child_object
+ } = object
+ ) do
+ object =
+ if Enum.member?(Pleroma.Config.get([:mrf_simple, :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)
+ else
+ object
+ end
+
+ {:ok, object}
+ end
+
+ defp check_media_nsfw(_actor_info, object), do: {:ok, object}
+
+ defp check_ftl_removal(%{host: actor_host} = _actor_info, object) do
+ object =
+ with true <-
+ Enum.member?(
+ Pleroma.Config.get([:mrf_simple, :federated_timeline_removal]),
+ actor_host
+ ),
+ user <- User.get_cached_by_ap_id(object["actor"]),
+ true <- "https://www.w3.org/ns/activitystreams#Public" in object["to"] do
+ to =
+ List.delete(object["to"], "https://www.w3.org/ns/activitystreams#Public") ++
+ [user.follower_address]
+
+ cc =
+ List.delete(object["cc"], user.follower_address) ++
+ ["https://www.w3.org/ns/activitystreams#Public"]
+
+ object
+ |> Map.put("to", to)
+ |> Map.put("cc", cc)
+ else
+ _ -> object
+ end
+
+ {:ok, object}
+ end
+
+ defp check_report_removal(%{host: actor_host} = _actor_info, %{"type" => "Flag"} = object) do
+ if actor_host in Pleroma.Config.get([:mrf_simple, :report_removal]) do
+ {:reject, nil}
else
{:ok, object}
end
end
- @media_nsfw Keyword.get(@mrf_policy, :media_nsfw)
- defp check_media_nsfw(actor_info, object) do
- child_object = object["object"]
+ defp check_report_removal(_actor_info, object), do: {:ok, object}
- if actor_info.host in @media_nsfw and child_object["attachment"] != nil and
- length(child_object["attachment"]) > 0 do
- tags = (child_object["tag"] || []) ++ ["nsfw"]
- child_object = Map.put(child_object, "tags", tags)
- child_object = Map.put(child_object, "sensitive", true)
- object = Map.put(object, "object", child_object)
- {:ok, object}
+ defp check_avatar_removal(%{host: actor_host} = _actor_info, %{"icon" => _icon} = object) do
+ if actor_host in Pleroma.Config.get([:mrf_simple, :avatar_removal]) do
+ {:ok, Map.delete(object, "icon")}
else
{:ok, object}
end
end
- @ftl_removal Keyword.get(@mrf_policy, :federated_timeline_removal)
- defp check_ftl_removal(actor_info, object) do
- if actor_info.host in @ftl_removal do
- user = User.get_by_ap_id(object["actor"])
-
- # flip to/cc relationship to make the post unlisted
- object =
- if "https://www.w3.org/ns/activitystreams#Public" in object["to"] and
- user.follower_address in object["cc"] do
- to =
- List.delete(object["to"], "https://www.w3.org/ns/activitystreams#Public") ++
- [user.follower_address]
-
- cc =
- List.delete(object["cc"], user.follower_address) ++
- ["https://www.w3.org/ns/activitystreams#Public"]
-
- object
- |> Map.put("to", to)
- |> Map.put("cc", cc)
- else
- object
- end
+ defp check_avatar_removal(_actor_info, object), do: {:ok, object}
- {:ok, object}
+ defp check_banner_removal(%{host: actor_host} = _actor_info, %{"image" => _image} = object) do
+ if actor_host in Pleroma.Config.get([:mrf_simple, :banner_removal]) do
+ {:ok, Map.delete(object, "image")}
else
{:ok, object}
end
end
- def filter(object) do
- actor_info = URI.parse(object["actor"])
+ defp check_banner_removal(_actor_info, object), do: {:ok, object}
- with {:ok, object} <- check_reject(actor_info, object),
+ @impl true
+ def filter(%{"actor" => actor} = object) do
+ actor_info = URI.parse(actor)
+
+ with {:ok, object} <- check_accept(actor_info, object),
+ {:ok, object} <- check_reject(actor_info, object),
{:ok, object} <- check_media_removal(actor_info, object),
{:ok, object} <- check_media_nsfw(actor_info, object),
- {:ok, object} <- check_ftl_removal(actor_info, object) do
+ {:ok, object} <- check_ftl_removal(actor_info, object),
+ {:ok, object} <- check_report_removal(actor_info, object) do
{:ok, object}
else
_e -> {:reject, nil}
end
end
+
+ def filter(%{"id" => actor, "type" => obj_type} = object)
+ when obj_type in ["Application", "Group", "Organization", "Person", "Service"] do
+ actor_info = URI.parse(actor)
+
+ with {:ok, object} <- check_avatar_removal(actor_info, object),
+ {:ok, object} <- check_banner_removal(actor_info, object) do
+ {:ok, object}
+ else
+ _e -> {:reject, nil}
+ end
+ end
+
+ def filter(object), do: {:ok, object}
end
projects / akkoma / blobdiff