[#1427] Fixes / improvements of admin scopes support. Added tests.

lib/pleroma/plugs/oauth_scopes_plug.ex

@@ -6,6 +6,7 @@ defmodule Pleroma.Plugs.OAuthScopesPlug do
   import Plug.Conn
   import Pleroma.Web.Gettext
 
+  alias Pleroma.Config
   alias Pleroma.Plugs.EnsurePublicOrAuthenticatedPlug
 
   @behaviour Plug
@@ -15,6 +16,14 @@ defmodule Pleroma.Plugs.OAuthScopesPlug do
   def call(%Plug.Conn{assigns: assigns} = conn, %{scopes: scopes} = options) do
     op = options[:op] || :|
     token = assigns[:token]
+
+    scopes =
+      if options[:admin] do
+        Config.oauth_admin_scopes(scopes)
+      else
+        scopes
+      end
+
     matched_scopes = token && filter_descendants(scopes, token.scopes)
 
     cond do

lib/pleroma/plugs/user_is_admin_plug.ex

@@ -12,31 +12,23 @@ defmodule Pleroma.Plugs.UserIsAdminPlug do
     options
   end
 
-  unless Pleroma.Config.enforce_oauth_admin_scope_usage?() do
-    # To do: once AdminFE makes use of "admin" scope, disable the following func definition
-    #   (fail on no admin scope(s) in token even if `is_admin` is true)
-    def call(%Plug.Conn{assigns: %{user: %Pleroma.User{is_admin: true}}} = conn, _) do
-      conn
+  def call(%Plug.Conn{assigns: assigns} = conn, _) do
+    token = assigns[:token]
+    user = assigns[:user]
+
+    cond do
+      token && OAuth.Scopes.contains_admin_scopes?(token.scopes) ->
+        # Note: checking for _any_ admin scope presence, not necessarily fitting requested action.
+        #   Thus, controller must explicitly invoke OAuthScopesPlug to verify scope requirements.
+        conn
+
+      user && user.is_admin && !Pleroma.Config.enforce_oauth_admin_scope_usage?() ->
+        conn
+
+      true ->
+        conn
+        |> render_error(:forbidden, "User is not an admin or OAuth admin scope is not granted.")
+        |> halt()
     end
   end
-
-  def call(%Plug.Conn{assigns: %{token: %OAuth.Token{scopes: oauth_scopes} = _token}} = conn, _) do
-    if OAuth.Scopes.contains_admin_scopes?(oauth_scopes) do
-      # Note: checking for _any_ admin scope presence, not necessarily fitting requested action.
-      #   Thus, controller must explicitly invoke OAuthScopesPlug to verify scope requirements.
-      conn
-    else
-      fail(conn)
-    end
-  end
-
-  def call(conn, _) do
-    fail(conn)
-  end
-
-  defp fail(conn) do
-    conn
-    |> render_error(:forbidden, "User is not an admin or OAuth admin scope is not granted.")
-    |> halt()
-  end
 end