1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
7 @behaviour Pleroma.Web.ActivityPub.MRF
9 Apply policies based on user tags
11 This policy applies policies on a user activities depending on their tags
14 - `mrf_tag:media-force-nsfw`: Mark as sensitive on presence of attachments
15 - `mrf_tag:media-strip`: Remove attachments
16 - `mrf_tag:force-unlisted`: Mark as unlisted (removes from the federated timeline)
17 - `mrf_tag:sandbox`: Remove from public (local and federated) timelines
18 - `mrf_tag:disable-remote-subscription`: Reject non-local follow requests
19 - `mrf_tag:disable-any-subscription`: Reject any follow requests
22 require Pleroma.Constants
24 defp get_tags(%User{tags: tags}) when is_list(tags), do: tags
25 defp get_tags(_), do: []
28 "mrf_tag:media-force-nsfw",
31 "object" => %{"attachment" => child_attachment} = object
34 when length(child_attachment) > 0 do
35 tags = (object["tag"] || []) ++ ["nsfw"]
39 |> Map.put("tag", tags)
40 |> Map.put("sensitive", true)
42 message = Map.put(message, "object", object)
48 "mrf_tag:media-strip",
51 "object" => %{"attachment" => child_attachment} = object
54 when length(child_attachment) > 0 do
55 object = Map.delete(object, "attachment")
56 message = Map.put(message, "object", object)
62 "mrf_tag:force-unlisted",
71 user = User.get_cached_by_ap_id(actor)
73 if Enum.member?(to, Pleroma.Constants.as_public()) do
74 to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
75 cc = List.delete(cc, user.follower_address) ++ [Pleroma.Constants.as_public()]
86 |> Map.put("object", object)
104 user = User.get_cached_by_ap_id(actor)
106 if Enum.member?(to, Pleroma.Constants.as_public()) or
107 Enum.member?(cc, Pleroma.Constants.as_public()) do
108 to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
109 cc = List.delete(cc, Pleroma.Constants.as_public())
120 |> Map.put("object", object)
129 "mrf_tag:disable-remote-subscription",
130 %{"type" => "Follow", "actor" => actor} = message
132 user = User.get_cached_by_ap_id(actor)
134 if user.local == true do
141 defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow"}),
144 defp process_tag(_, message), do: {:ok, message}
146 def filter_message(actor, message) do
147 User.get_cached_by_ap_id(actor)
149 |> Enum.reduce({:ok, message}, fn
150 tag, {:ok, message} ->
151 process_tag(tag, message)
159 def filter(%{"object" => target_actor, "type" => "Follow"} = message),
160 do: filter_message(target_actor, message)
163 def filter(%{"actor" => actor, "type" => "Create"} = message),
164 do: filter_message(actor, message)
167 def filter(message), do: {:ok, message}
170 def describe, do: {:ok, %{}}