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-rw-r--r--app/controllers/concerns/clientside_preview_csp.rb17
1 files changed, 17 insertions, 0 deletions
diff --git a/app/controllers/concerns/clientside_preview_csp.rb b/app/controllers/concerns/clientside_preview_csp.rb
new file mode 100644
index 00000000000..6892c441b67
--- /dev/null
+++ b/app/controllers/concerns/clientside_preview_csp.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module ClientsidePreviewCSP
+ extend ActiveSupport::Concern
+
+ included do
+ content_security_policy do |p|
+ next if p.directives.blank?
+ next unless Gitlab::CurrentSettings.web_ide_clientside_preview_enabled?
+
+ default_frame_src = p.directives['frame-src'] || p.directives['default-src']
+ frame_src_values = Array.wrap(default_frame_src) | [Gitlab::CurrentSettings.web_ide_clientside_preview_bundler_url].compact
+
+ p.frame_src(*frame_src_values)
+ end
+ end
+end