+ def get_actor(%{"actor" => actor}) when is_binary(actor) do
+ actor
+ end
+
+ def get_actor(%{"actor" => actor}) when is_list(actor) do
+ if is_binary(Enum.at(actor, 0)) do
+ Enum.at(actor, 0)
+ else
+ Enum.find(actor, fn %{"type" => type} -> type in ["Person", "Service", "Application"] end)
+ |> Map.get("id")
+ end
+ end
+
+ def get_actor(%{"actor" => %{"id" => id}}) when is_bitstring(id) do
+ id
+ end
+
+ def get_actor(%{"actor" => nil, "attributedTo" => actor}) when not is_nil(actor) do
+ get_actor(%{"actor" => actor})
+ end
+
+ @doc """
+ Checks that an imported AP object's actor matches the domain it came from.
+ """
+ def contain_origin(id, %{"actor" => nil}), do: :error
+
+ def contain_origin(id, %{"actor" => actor} = params) do
+ id_uri = URI.parse(id)
+ actor_uri = URI.parse(get_actor(params))
+
+ if id_uri.host == actor_uri.host do
+ :ok
+ else
+ :error
+ end
+ end
+
+ def contain_origin_from_id(id, %{"id" => nil}), do: :error
+
+ def contain_origin_from_id(id, %{"id" => other_id} = params) do
+ id_uri = URI.parse(id)
+ other_uri = URI.parse(other_id)
+
+ if id_uri.host == other_uri.host do
+ :ok
+ else
+ :error
+ end
+ end
+