46 lines
1.5 KiB
Elixir
46 lines
1.5 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Web.ActivityPub.MRF.EnsureRePrepended do
|
|
alias Pleroma.Object
|
|
|
|
@moduledoc "Ensure a re: is prepended on replies to a post with a Subject"
|
|
@behaviour Pleroma.Web.ActivityPub.MRF.Policy
|
|
|
|
@reply_prefix Regex.compile!("^re:[[:space:]]*", [:caseless])
|
|
|
|
def filter_by_summary(
|
|
%{data: %{"summary" => parent_summary}} = _in_reply_to,
|
|
%{"summary" => child_summary} = child
|
|
)
|
|
when not is_nil(child_summary) and byte_size(child_summary) > 0 and
|
|
not is_nil(parent_summary) and byte_size(parent_summary) > 0 do
|
|
if (child_summary == parent_summary and not Regex.match?(@reply_prefix, child_summary)) or
|
|
(Regex.match?(@reply_prefix, parent_summary) &&
|
|
Regex.replace(@reply_prefix, parent_summary, "") == child_summary) do
|
|
Map.put(child, "summary", "re: " <> child_summary)
|
|
else
|
|
child
|
|
end
|
|
end
|
|
|
|
def filter_by_summary(_in_reply_to, child), do: child
|
|
|
|
def filter(%{"type" => "Create", "object" => child_object} = object)
|
|
when is_map(child_object) do
|
|
child =
|
|
child_object["inReplyTo"]
|
|
|> Object.normalize(fetch: false)
|
|
|> filter_by_summary(child_object)
|
|
|
|
object = Map.put(object, "object", child)
|
|
|
|
{:ok, object}
|
|
end
|
|
|
|
def filter(object), do: {:ok, object}
|
|
|
|
def describe, do: {:ok, %{}}
|
|
end
|