Files
clinch/app/views/layouts/application.html.erb
Dan Milne d49e7ce4f5 Move CSP to nonces; remove unsafe-inline from script-src and style-src
unsafe-inline on script-src neutered CSP as an XSS defense on the login and OAuth
consent pages (the highest-value targets in an IdP). Switch to a per-response
nonce for both script-src and style-src and drop unsafe-inline entirely.

- Add a random per-response nonce generator and apply it to script-src/style-src.
- Remove :unsafe_inline from both directives.
- Nonce the one hand-written inline script (dark-mode detection in the layout).
- Convert the 2 static style="display:none" attributes to class="hidden" (their
  runtime toggle is done via element.style in JS, which CSP does not govern).

importmap-rails (2.2.3) already stamps the nonce onto its generated inline
importmap/module/preload tags, and Turbo (2.0.23) reads csp_meta_tag for its
injected <style>, so no other view changes were needed. Adds an integration test
asserting the enforcing header carries nonces, omits unsafe-inline, and that the
inline script's nonce matches the header.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-11 20:42:28 +10:00

81 lines
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<!DOCTYPE html>
<html>
<head>
<title><%= content_for(:title) || "Clinch" %></title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="application-name" content="Clinch">
<meta name="mobile-web-app-capable" content="yes">
<%= csrf_meta_tags %>
<%= csp_meta_tag %>
<script nonce="<%= content_security_policy_nonce %>">
(function() {
var theme = localStorage.getItem('theme');
if (theme === 'dark' || (!theme && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
document.documentElement.classList.add('dark');
}
})();
</script>
<%= yield :head %>
<%# Enable PWA manifest for installable apps (make sure to enable in config/routes.rb too!) %>
<%#= tag.link rel: "manifest", href: pwa_manifest_path(format: :json) %>
<link rel="icon" href="/icon.png" type="image/png">
<link rel="icon" href="/icon.svg" type="image/svg+xml">
<link rel="apple-touch-icon" href="/icon.png">
<%# Includes all stylesheet files in app/assets/stylesheets %>
<%= stylesheet_link_tag :app, "data-turbo-track": "reload" %>
<%= javascript_importmap_tags %>
</head>
<body class="dark:bg-gray-900 dark:text-gray-100">
<% if authenticated? %>
<div data-controller="mobile-sidebar">
<%= render "shared/sidebar" %>
<div class="lg:pl-64">
<!-- Mobile menu button -->
<div class="sticky top-0 z-40 flex h-16 shrink-0 items-center gap-x-4 border-b border-gray-200 dark:border-gray-700 bg-white dark:bg-gray-900 px-4 shadow-sm sm:gap-x-6 sm:px-6 lg:hidden">
<button type="button"
class="-m-2.5 p-2.5 text-gray-700 dark:text-gray-300"
id="mobile-menu-button"
data-action="click->mobile-sidebar#openSidebar">
<span class="sr-only">Open sidebar</span>
<svg class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" d="M3.75 6.75h16.5M3.75 12h16.5m-16.5 5.25h16.5" />
</svg>
</button>
</div>
<main class="py-10">
<div class="px-4 sm:px-6 lg:px-8">
<%= render "shared/flash" %>
<%= yield %>
</div>
</main>
</div>
</div>
<% else %>
<!-- Public layout (signup/signin) -->
<div class="absolute top-4 right-4" data-controller="dark-mode">
<button type="button" data-action="click->dark-mode#toggle" class="rounded-lg p-2 text-gray-500 hover:bg-gray-100 dark:text-gray-400 dark:hover:bg-gray-800">
<svg data-dark-mode-target="icon" data-mode="light" class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" d="M21.752 15.002A9.72 9.72 0 0118 15.75c-5.385 0-9.75-4.365-9.75-9.75 0-1.33.266-2.597.748-3.752A9.753 9.753 0 003 11.25C3 16.635 7.365 21 12.75 21a9.753 9.753 0 009.002-5.998z" />
</svg>
<svg data-dark-mode-target="icon" data-mode="dark" class="hidden h-5 w-5" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" d="M12 3v2.25m6.364.386l-1.591 1.591M21 12h-2.25m-.386 6.364l-1.591-1.591M12 18.75V21m-4.773-4.227l-1.591 1.591M5.25 12H3m4.227-4.773L5.636 5.636M15.75 12a3.75 3.75 0 11-7.5 0 3.75 3.75 0 017.5 0z" />
</svg>
</button>
</div>
<main class="container mx-auto mt-28 px-5">
<%= render "shared/flash" %>
<%= yield %>
</main>
<% end %>
</body>
</html>