# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 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.TagPolicy do
alias Pleroma.User
@behaviour Pleroma.Web.ActivityPub.MRF
- @moduledoc "Apply policies based on user tags"
+ @moduledoc """
+ Apply policies based on user tags
+
+ This policy applies policies on a user activities depending on their tags
+ on your instance.
+
+ - `mrf_tag:media-force-nsfw`: Mark as sensitive on presence of attachments
+ - `mrf_tag:media-strip`: Remove attachments
+ - `mrf_tag:force-unlisted`: Mark as unlisted (removes from the federated timeline)
+ - `mrf_tag:sandbox`: Remove from public (local and federated) timelines
+ - `mrf_tag:disable-remote-subscription`: Reject non-local follow requests
+ - `mrf_tag:disable-any-subscription`: Reject any follow requests
+ """
+
+ require Pleroma.Constants
defp get_tags(%User{tags: tags}) when is_list(tags), do: tags
defp get_tags(_), do: []
defp process_tag(
"mrf_tag:media-force-nsfw",
- %{"type" => "Create", "object" => %{"attachment" => child_attachment} = object} = message
+ %{
+ "type" => "Create",
+ "object" => %{"attachment" => child_attachment}
+ } = message
)
when length(child_attachment) > 0 do
- tags = (object["tag"] || []) ++ ["nsfw"]
-
- object =
- object
- |> Map.put("tags", tags)
- |> Map.put("sensitive", true)
-
- message = Map.put(message, "object", object)
-
- {:ok, message}
+ {:ok, Kernel.put_in(message, ["object", "sensitive"], true)}
end
defp process_tag(
"mrf_tag:media-strip",
- %{"type" => "Create", "object" => %{"attachment" => child_attachment} = object} = message
+ %{
+ "type" => "Create",
+ "object" => %{"attachment" => child_attachment} = object
+ } = message
)
when length(child_attachment) > 0 do
object = Map.delete(object, "attachment")
defp process_tag(
"mrf_tag:force-unlisted",
- %{"type" => "Create", "to" => to, "cc" => cc, "actor" => actor} = message
+ %{
+ "type" => "Create",
+ "to" => to,
+ "cc" => cc,
+ "actor" => actor,
+ "object" => object
+ } = message
) do
user = User.get_cached_by_ap_id(actor)
- if Enum.member?(to, "https://www.w3.org/ns/activitystreams#Public") do
- to =
- List.delete(to, "https://www.w3.org/ns/activitystreams#Public") ++ [user.follower_address]
-
- cc =
- List.delete(cc, user.follower_address) ++ ["https://www.w3.org/ns/activitystreams#Public"]
+ if Enum.member?(to, Pleroma.Constants.as_public()) do
+ to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+ cc = List.delete(cc, user.follower_address) ++ [Pleroma.Constants.as_public()]
object =
- message["object"]
+ object
|> Map.put("to", to)
|> Map.put("cc", cc)
defp process_tag(
"mrf_tag:sandbox",
- %{"type" => "Create", "to" => to, "cc" => cc, "actor" => actor} = message
+ %{
+ "type" => "Create",
+ "to" => to,
+ "cc" => cc,
+ "actor" => actor,
+ "object" => object
+ } = message
) do
user = User.get_cached_by_ap_id(actor)
- if Enum.member?(to, "https://www.w3.org/ns/activitystreams#Public") or
- Enum.member?(cc, "https://www.w3.org/ns/activitystreams#Public") do
- to =
- List.delete(to, "https://www.w3.org/ns/activitystreams#Public") ++ [user.follower_address]
-
- cc = List.delete(cc, "https://www.w3.org/ns/activitystreams#Public")
+ if Enum.member?(to, Pleroma.Constants.as_public()) or
+ Enum.member?(cc, Pleroma.Constants.as_public()) do
+ to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+ cc = List.delete(cc, Pleroma.Constants.as_public())
object =
- message["object"]
+ object
|> Map.put("to", to)
|> Map.put("cc", cc)
if user.local == true do
{:ok, message}
else
- {:reject, nil}
+ {:reject,
+ "[TagPolicy] Follow from #{actor} tagged with mrf_tag:disable-remote-subscription"}
end
end
- defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow"}), do: {:reject, nil}
+ defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow", "actor" => actor}),
+ do: {:reject, "[TagPolicy] Follow from #{actor} tagged with mrf_tag:disable-any-subscription"}
defp process_tag(_, message), do: {:ok, message}
@impl true
def filter(message), do: {:ok, message}
+
+ @impl true
+ def describe, do: {:ok, %{}}
end