Add the ability to set the CSP nonce only to the specified directives

I changed to set CSP nonce to `style-src` directive in #32932.
But this causes an issue when `unsafe-inline` is specified to `style-src`
(If a nonce is present, a nonce takes precedence over `unsafe-inline`).

So, I fixed to nonce directives configurable. By configure this, users
can make CSP as before.

Fixes #35137.

1 files changed, 32 insertions, 0 deletions

diff --git a/railties/test/application/content_security_policy_test.rb b/railties/test/application/content_security_policy_test.rb
index 3338bcb47d..0bb6ee917a 100644
--- a/railties/test/application/content_security_policy_test.rb
+++ b/railties/test/application/content_security_policy_test.rb
@@ -119,6 +119,38 @@ module ApplicationTests
       assert_policy "default-src 'self' https:", report_only: true
     end
 
+    test "global content security policy nonce directives in an initializer" do
+      controller :pages, <<-RUBY
+        class PagesController < ApplicationController
+          def index
+            render html: "<h1>Welcome to Rails!</h1>"
+          end
+        end
+      RUBY
+
+      app_file "config/initializers/content_security_policy.rb", <<-RUBY
+        Rails.application.config.content_security_policy do |p|
+          p.default_src :self, :https
+          p.script_src  :self, :https
+          p.style_src   :self, :https
+        end
+
+        Rails.application.config.content_security_policy_nonce_generator = proc { "iyhD0Yc0W+c=" }
+        Rails.application.config.content_security_policy_nonce_directives = %w(script-src)
+      RUBY
+
+      app_file "config/routes.rb", <<-RUBY
+        Rails.application.routes.draw do
+          root to: "pages#index"
+        end
+      RUBY
+
+      app("development")
+
+      get "/"
+      assert_policy "default-src 'self' https:; script-src 'self' https: 'nonce-iyhD0Yc0W+c='; style-src 'self' https:"
+    end
+
     test "override content security policy in a controller" do
       controller :pages, <<-RUBY
         class PagesController < ApplicationController