Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `spec/models/status_spec.rb`:
  Upstream added tests too close to glitch-soc-specific tests.
  Kept both tests.

app/controllers/auth/registrations_controller.rb

@@ -82,13 +82,17 @@ class Auth::RegistrationsController < Devise::RegistrationsController
   end
 
   def check_enabled_registrations
-    redirect_to root_path if single_user_mode? || !allowed_registrations?
+    redirect_to root_path if single_user_mode? || omniauth_only? || !allowed_registrations?
   end
 
   def allowed_registrations?
     Setting.registrations_mode != 'none' || @invite&.valid_for_use?
   end
 
+  def omniauth_only?
+    ENV['OMNIAUTH_ONLY'] == 'true'
+  end
+
   def invite_code
     if params[:user]
       params[:user][:invite_code]

app/controllers/auth/sessions_controller.rb

@@ -15,14 +15,6 @@ class Auth::SessionsController < Devise::SessionsController
   before_action :set_instance_presenter, only: [:new]
   before_action :set_body_classes
 
-  def new
-    Devise.omniauth_configs.each do |provider, config|
-      return redirect_to(omniauth_authorize_path(resource_name, provider)) if config.strategy.redirect_at_sign_in
-    end
-
-    super
-  end
-
   def create
     super do |resource|
       # We only need to call this if this hasn't already been
@@ -89,14 +81,6 @@ class Auth::SessionsController < Devise::SessionsController
     end
   end
 
-  def after_sign_out_path_for(_resource_or_scope)
-    Devise.omniauth_configs.each_value do |config|
-      return root_path if config.strategy.redirect_at_sign_in
-    end
-
-    super
-  end
-
   def require_no_authentication
     super