- def call(conn, opts) do
- user = conn.params["actor"]
- Logger.debug("Checking sig for #{user}")
- [signature | _] = get_req_header(conn, "signature")
+ def call(conn, _opts) do
+ if get_format(conn) == "activity+json" do
+ conn
+ |> maybe_assign_valid_signature()
+ |> maybe_require_signature()
+ else
+ conn
+ end
+ end
+
+ defp maybe_assign_valid_signature(conn) do
+ if has_signature_header?(conn) do
+ # set (request-target) header to the appropriate value
+ # we also replace the digest header with the one we computed
+ request_target = String.downcase("#{conn.method}") <> " #{conn.request_path}"
+
+ conn =
+ conn
+ |> put_req_header("(request-target)", request_target)
+ |> case do
+ %{assigns: %{digest: digest}} = conn -> put_req_header(conn, "digest", digest)
+ conn -> conn
+ end