Fix relays UI being available in whitelist/secure mode (mastodon#11963)

Fix relays UI referencing relay that is not functional

Author: Gargron

app/controllers/admin/relays_controller.rb

@@ -3,6 +3,7 @@
 module Admin
   class RelaysController < BaseController
     before_action :set_relay, except: [:index, :new, :create]
+    before_action :require_signatures_enabled!, only: [:new, :create, :enable]
 
     def index
       authorize :relay, :update?
@@ -11,7 +12,7 @@ def index
 
     def new
       authorize :relay, :update?
-      @relay = Relay.new(inbox_url: Relay::PRESET_RELAY)
+      @relay = Relay.new
     end
 
     def create
@@ -54,5 +55,9 @@ def set_relay
     def resource_params
       params.require(:relay).permit(:inbox_url)
     end
+
+    def require_signatures_enabled!
+      redirect_to admin_relays_path, alert: I18n.t('admin.relays.signatures_not_enabled') if authorized_fetch_mode?
+    end
   end
 end

app/models/relay.rb

@@ -12,8 +12,6 @@
 #
 
 class Relay < ApplicationRecord
-  PRESET_RELAY = 'https://relay.joinmastodon.org/inbox'
-
   validates :inbox_url, presence: true, uniqueness: true, url: true, if: :will_save_change_to_inbox_url?
 
   enum state: [:idle, :pending, :accepted, :rejected]
@@ -74,7 +72,6 @@ def some_local_account
   end
 
   def ensure_disabled
-    return unless enabled?
-    disable!
+    disable! if enabled?
   end
 end

config/locales/en.yml

@@ -258,7 +258,7 @@ en:
       updated_msg: Emoji successfully updated!
       upload: Upload
     dashboard:
-      authorized_fetch_mode: Authorized fetch mode
+      authorized_fetch_mode: Secure mode
       backlog: backlogged jobs
       config: Configuration
       feature_deletions: Account deletions
@@ -384,6 +384,7 @@ en:
       pending: Waiting for relay's approval
       save_and_enable: Save and enable
       setup: Setup a relay connection
+      signatures_not_enabled: Relays will not work correctly while secure mode or whitelist mode is enabled
       status: Status
       title: Relays
     report_notes:

config/navigation.rb

@@ -47,7 +47,7 @@
       s.item :dashboard, safe_join([fa_icon('tachometer fw'), t('admin.dashboard.title')]), admin_dashboard_url
       s.item :settings, safe_join([fa_icon('cogs fw'), t('admin.settings.title')]), edit_admin_settings_url, if: -> { current_user.admin? }, highlights_on: %r{/admin/settings}
       s.item :custom_emojis, safe_join([fa_icon('smile-o fw'), t('admin.custom_emojis.title')]), admin_custom_emojis_url, highlights_on: %r{/admin/custom_emojis}
-      s.item :relays, safe_join([fa_icon('exchange fw'), t('admin.relays.title')]), admin_relays_url, if: -> { current_user.admin? }, highlights_on: %r{/admin/relays}
+      s.item :relays, safe_join([fa_icon('exchange fw'), t('admin.relays.title')]), admin_relays_url, if: -> { current_user.admin? && !whitelist_mode? }, highlights_on: %r{/admin/relays}
       s.item :sidekiq, safe_join([fa_icon('diamond fw'), 'Sidekiq']), sidekiq_url, link_html: { target: 'sidekiq' }, if: -> { current_user.admin? }
       s.item :pghero, safe_join([fa_icon('database fw'), 'PgHero']), pghero_url, link_html: { target: 'pghero' }, if: -> { current_user.admin? }
     end