From 8f63a831c4334cb1cf705a0eb41b159b59d3e0f4 Mon Sep 17 00:00:00 2001
From: miraikumiko <miraikumiko@disroot.org>
Date: Thu, 19 Jun 2025 08:45:06 +0200
Subject: [PATCH] Add host-meta

---
 .../controllers/hostmeta_controller.ex        | 20 +++++++++++++++++++
 lib/nulla_web/router.ex                       |  1 +
 .../controllers/hostmeta_controller_test.exs  | 13 ++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 lib/nulla_web/controllers/hostmeta_controller.ex
 create mode 100644 test/nulla_web/controllers/hostmeta_controller_test.exs

diff --git a/lib/nulla_web/controllers/hostmeta_controller.ex b/lib/nulla_web/controllers/hostmeta_controller.ex
new file mode 100644
index 0000000..8f7d835
--- /dev/null
+++ b/lib/nulla_web/controllers/hostmeta_controller.ex
@@ -0,0 +1,20 @@
+defmodule NullaWeb.HostmetaController do
+  use NullaWeb, :controller
+  alias Nulla.Models.InstanceSettings
+
+  def index(conn, _params) do
+    instance_settings = InstanceSettings.get_instance_settings!()
+    domain = instance_settings.domain
+
+    xml = """
+    <?xml version="1.0" encoding="UTF-8"?>
+    <XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
+      <Link rel="lrdd" type="application/xrd+xml" template="https://#{domain}/.well-known/webfinger?resource={uri}"/>
+    </XRD>
+    """
+
+    conn
+    |> put_resp_content_type("application/xrd+xml")
+    |> send_resp(200, xml)
+  end
+end
diff --git a/lib/nulla_web/router.ex b/lib/nulla_web/router.ex
index ed3b543..cd80eb6 100644
--- a/lib/nulla_web/router.ex
+++ b/lib/nulla_web/router.ex
@@ -17,6 +17,7 @@ defmodule NullaWeb.Router do
   scope "/", NullaWeb do
     pipe_through :browser
 
+    get "/.well-known/host-meta", HostmetaController, :index
     get "/.well-known/webfinger", WebfingerController, :index
     get "/.well-known/nodeinfo", NodeinfoController, :index
     get "/nodeinfo/2.0", NodeinfoController, :show
diff --git a/test/nulla_web/controllers/hostmeta_controller_test.exs b/test/nulla_web/controllers/hostmeta_controller_test.exs
new file mode 100644
index 0000000..99d5baa
--- /dev/null
+++ b/test/nulla_web/controllers/hostmeta_controller_test.exs
@@ -0,0 +1,13 @@
+defmodule NullaWeb.HostmetaControllerTest do
+  use NullaWeb.ConnCase
+
+  describe "GET /.well-known/host-meta" do
+    test "returns Nodeinfo JSON index", %{conn: conn} do
+      conn =
+        conn
+        |> get(~p"/.well-known/host-meta")
+
+      assert response(conn, 200) =~ "localhost"
+    end
+  end
+end