From 9bc1e79c5675efb70e45b63f6530194888b182de Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Mon, 12 Jul 2021 21:57:52 -0500
Subject: [PATCH] Moderators: add UserIsStaffPlug

---
 lib/pleroma/web/plugs/user_is_staff_plug.ex   | 23 +++++++++
 .../web/plugs/user_is_staff_plug_test.exs     | 47 +++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 lib/pleroma/web/plugs/user_is_staff_plug.ex
 create mode 100644 test/pleroma/web/plugs/user_is_staff_plug_test.exs

diff --git a/lib/pleroma/web/plugs/user_is_staff_plug.ex b/lib/pleroma/web/plugs/user_is_staff_plug.ex
new file mode 100644
index 000000000..49c2d9cca
--- /dev/null
+++ b/lib/pleroma/web/plugs/user_is_staff_plug.ex
@@ -0,0 +1,23 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.Plugs.UserIsStaffPlug do
+  import Pleroma.Web.TranslationHelpers
+  import Plug.Conn
+
+  alias Pleroma.User
+
+  def init(options) do
+    options
+  end
+
+  def call(%{assigns: %{user: %User{is_admin: true}}} = conn, _), do: conn
+  def call(%{assigns: %{user: %User{is_moderator: true}}} = conn, _), do: conn
+
+  def call(conn, _) do
+    conn
+    |> render_error(:forbidden, "User is not a staff member.")
+    |> halt()
+  end
+end
diff --git a/test/pleroma/web/plugs/user_is_staff_plug_test.exs b/test/pleroma/web/plugs/user_is_staff_plug_test.exs
new file mode 100644
index 000000000..a0c4061db
--- /dev/null
+++ b/test/pleroma/web/plugs/user_is_staff_plug_test.exs
@@ -0,0 +1,47 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.Plugs.UserIsStaffPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Web.Plugs.UserIsStaffPlug
+  import Pleroma.Factory
+
+  test "accepts a user that is an admin" do
+    user = insert(:user, is_admin: true)
+
+    conn = assign(build_conn(), :user, user)
+
+    ret_conn = UserIsStaffPlug.call(conn, %{})
+
+    assert conn == ret_conn
+  end
+
+  test "accepts a user that is a moderator" do
+    user = insert(:user, is_moderator: true)
+
+    conn = assign(build_conn(), :user, user)
+
+    ret_conn = UserIsStaffPlug.call(conn, %{})
+
+    assert conn == ret_conn
+  end
+
+  test "denies a user that isn't a staff member" do
+    user = insert(:user)
+
+    conn =
+      build_conn()
+      |> assign(:user, user)
+      |> UserIsStaffPlug.call(%{})
+
+    assert conn.status == 403
+  end
+
+  test "denies when a user isn't set" do
+    conn = UserIsStaffPlug.call(build_conn(), %{})
+
+    assert conn.status == 403
+  end
+end