X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Fmrf%2Fsimple_policy.ex;h=4edc007fd564dc889b829bdd78e85a327572c2e5;hb=27fe7b0274cd9904d91167adade2cf7e56fd482b;hp=50426e920be268a7d4d04b2572aa0a5948f93e64;hpb=67af50ec713d46e6e1d72605b985858cc15aad3c;p=akkoma
diff --git a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
index 50426e920..fe0dc874b 100644
--- a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
@@ -1,26 +1,38 @@
# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors
+# Copyright © 2017-2021 Pleroma Authors
# 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
+ @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+
+ alias Pleroma.Config
+ alias Pleroma.FollowingRelationship
+ 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])
+ accepts =
+ instance_list(:accept)
+ |> MRF.subdomains_regex()
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}
+ actor_host == Config.get([Pleroma.Web.Endpoint, :url, :host]) -> {:ok, object}
+ MRF.subdomain_match?(accepts, actor_host) -> {:ok, object}
+ true -> {:reject, "[SimplePolicy] host not in accept list"}
end
end
defp check_reject(%{host: actor_host} = _actor_info, object) do
- if Enum.member?(Pleroma.Config.get([:mrf_simple, :reject]), actor_host) do
- {:reject, nil}
+ rejects =
+ instance_list(:reject)
+ |> MRF.subdomains_regex()
+
+ if MRF.subdomain_match?(rejects, actor_host) do
+ {:reject, "[SimplePolicy] host in reject list"}
else
{:ok, object}
end
@@ -31,8 +43,12 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
%{"type" => "Create", "object" => %{"attachment" => child_attachment}} = object
)
when length(child_attachment) > 0 do
+ media_removal =
+ instance_list(:media_removal)
+ |> MRF.subdomains_regex()
+
object =
- if Enum.member?(Pleroma.Config.get([:mrf_simple, :media_removal]), actor_host) do
+ if MRF.subdomain_match?(media_removal, actor_host) do
child_object = Map.delete(object["object"], "attachment")
Map.put(object, "object", child_object)
else
@@ -48,16 +64,16 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
%{host: actor_host} = _actor_info,
%{
"type" => "Create",
- "object" => %{"attachment" => child_attachment} = child_object
+ "object" => %{} = _child_object
} = object
- )
- when length(child_attachment) > 0 do
+ ) do
+ media_nsfw =
+ instance_list(:media_nsfw)
+ |> MRF.subdomains_regex()
+
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)
+ if MRF.subdomain_match?(media_nsfw, actor_host) do
+ Kernel.put_in(object, ["object", "sensitive"], true)
else
object
end
@@ -68,22 +84,17 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
defp check_media_nsfw(_actor_info, object), do: {:ok, object}
defp check_ftl_removal(%{host: actor_host} = _actor_info, object) do
+ timeline_removal =
+ instance_list(:federated_timeline_removal)
+ |> MRF.subdomains_regex()
+
object =
- with true <-
- Enum.member?(
- Pleroma.Config.get([:mrf_simple, :federated_timeline_removal]),
- actor_host
- ),
+ with true <- MRF.subdomain_match?(timeline_removal, actor_host),
user <- User.get_cached_by_ap_id(object["actor"]),
- true <- "https://www.w3.org/ns/activitystreams#Public" in object["to"],
- true <- user.follower_address in object["cc"] do
- to =
- List.delete(object["to"], "https://www.w3.org/ns/activitystreams#Public") ++
- [user.follower_address]
+ true <- Pleroma.Constants.as_public() in object["to"] do
+ to = List.delete(object["to"], Pleroma.Constants.as_public()) ++ [user.follower_address]
- cc =
- List.delete(object["cc"], user.follower_address) ++
- ["https://www.w3.org/ns/activitystreams#Public"]
+ cc = List.delete(object["cc"], user.follower_address) ++ [Pleroma.Constants.as_public()]
object
|> Map.put("to", to)
@@ -95,18 +106,236 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
{: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 =
+ instance_list(: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 =
+ instance_list(:report_removal)
+ |> MRF.subdomains_regex()
+
+ if MRF.subdomain_match?(report_removal, actor_host) do
+ {:reject, "[SimplePolicy] host in report_removal list"}
+ else
+ {:ok, object}
+ end
+ end
+
+ defp check_report_removal(_actor_info, object), do: {:ok, object}
+
+ defp check_avatar_removal(%{host: actor_host} = _actor_info, %{"icon" => _icon} = object) do
+ avatar_removal =
+ instance_list(:avatar_removal)
+ |> MRF.subdomains_regex()
+
+ if MRF.subdomain_match?(avatar_removal, actor_host) do
+ {:ok, Map.delete(object, "icon")}
+ else
+ {:ok, object}
+ end
+ end
+
+ defp check_avatar_removal(_actor_info, object), do: {:ok, object}
+
+ defp check_banner_removal(%{host: actor_host} = _actor_info, %{"image" => _image} = object) do
+ banner_removal =
+ instance_list(:banner_removal)
+ |> MRF.subdomains_regex()
+
+ if MRF.subdomain_match?(banner_removal, actor_host) do
+ {:ok, Map.delete(object, "image")}
+ else
+ {:ok, object}
+ end
+ end
+
+ 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(object) do
- actor_info = URI.parse(object["actor"])
+ def filter(%{"type" => "Delete", "actor" => actor} = object) do
+ %{host: actor_host} = URI.parse(actor)
+
+ reject_deletes =
+ instance_list(:reject_deletes)
+ |> MRF.subdomains_regex()
+
+ if MRF.subdomain_match?(reject_deletes, actor_host) do
+ {:reject, "[SimplePolicy] host in reject_deletes list"}
+ else
+ {:ok, object}
+ end
+ end
+
+ @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_followers_only(actor_info, object),
+ {:ok, object} <- check_report_removal(actor_info, object),
+ {:ok, object} <- check_object(object) do
{:ok, object}
else
- _e -> {:reject, nil}
+ {:reject, nil} -> {:reject, "[SimplePolicy]"}
+ {:reject, _} = e -> e
+ _ -> {:reject, "[SimplePolicy]"}
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_accept(actor_info, object),
+ {:ok, object} <- check_reject(actor_info, object),
+ {:ok, object} <- check_avatar_removal(actor_info, object),
+ {:ok, object} <- check_banner_removal(actor_info, object) do
+ {:ok, object}
+ else
+ {:reject, nil} -> {:reject, "[SimplePolicy]"}
+ {:reject, _} = e -> e
+ _ -> {: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
+ def describe do
+ exclusions = Config.get([:mrf, :transparency_exclusions])
+
+ 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,
+ 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