akkoma/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex

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defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
alias Pleroma.User
@behaviour Pleroma.Web.ActivityPub.MRF
def filter(object) do
if object["type"] == "Create" do
user = User.get_by_ap_id(object["actor"])
public = "https://www.w3.org/ns/activitystreams#Public"
#Determine visibility
visibility =
cond do
#Public
public in object["to"] -> "p"
#Unlisted
public in object["cc"] -> "u"
#Followers-only
user.follower_address in object["to"] -> "f"
#Direct
true -> "d"
end
case visibility do
"p" -> {:ok, object}
"u" -> {:ok, object}
_ -> {:reject, nil}
end
else
{:ok, object}
end
end
end