1 defmodule Pleroma.Object.Containment do
3 This module contains some useful functions for containing objects to specific
4 origins and determining those origins. They previously lived in the
5 ActivityPub `Transmogrifier` module.
7 Object containment is an important step in validating remote objects to prevent
8 spoofing, therefore removal of object containment functions is NOT recommended.
10 def get_actor(%{"actor" => actor}) when is_binary(actor) do
14 def get_actor(%{"actor" => actor}) when is_list(actor) do
15 if is_binary(Enum.at(actor, 0)) do
18 Enum.find(actor, fn %{"type" => type} -> type in ["Person", "Service", "Application"] end)
23 def get_actor(%{"actor" => %{"id" => id}}) when is_bitstring(id) do
27 def get_actor(%{"actor" => nil, "attributedTo" => actor}) when not is_nil(actor) do
28 get_actor(%{"actor" => actor})
32 Checks that an imported AP object's actor matches the domain it came from.
34 def contain_origin(_id, %{"actor" => nil}), do: :error
36 def contain_origin(id, %{"actor" => _actor} = params) do
37 id_uri = URI.parse(id)
38 actor_uri = URI.parse(get_actor(params))
40 if id_uri.host == actor_uri.host do
47 def contain_origin_from_id(_id, %{"id" => nil}), do: :error
49 def contain_origin_from_id(id, %{"id" => other_id} = _params) do
50 id_uri = URI.parse(id)
51 other_uri = URI.parse(other_id)
53 if id_uri.host == other_uri.host do