perf(cache): sessionless anonymous path + lazy CSRF — edge-cache prerequisite (#387) - #390
perf(cache): sessionless anonymous path + lazy CSRF — edge-cache prerequisite (#387)#390fabiodalez-dev wants to merge 4 commits into
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Step 6 of the caching overhaul: remove the two blockers that prevent a shared edge cache for anonymous pages — the unconditional session and the per-session CSRF token embedded in anonymous HTML. Security-critical: CSRF validation is unchanged; only WHEN/HOW the token is minted for anonymous loads changes. - New App\Support\SessionPolicy::requiresSession() — the single fail-safe predicate. A request is sessionless ONLY when: method is GET/HEAD, AND no auth cookie is present (PHPSESSID / remember_token / csrf_login), AND the path is not an auth/contact route in any registered locale (login/register/verify/ forgot/reset/contact + legacy /login,/logout). Anything else (POST, any auth cookie, CLI, malformed path) keeps the exact current session behavior. - public/index.php: session ini hardening now applied unconditionally (so any lazily started session inherits the secure params); session_start() and regeneration gated on the predicate; anonymous locale falls back to the validated pinakes_locale cookie ONLY on the no-session path (session locale still wins for logged-in users — byte-identical). - layout.php: anonymous <meta name="csrf-token"> emits empty content (no bogus per-visitor token). New GET /csrf-token endpoint mints the session-backed token on demand (session_start + Csrf::ensureToken) with Cache-Control: no-store, private; csrf-helper.js fetches it before a state-changing request when the meta is empty. CsrfMiddleware/Csrf are untouched — missing/invalid tokens still 403 on POST/PUT/PATCH/DELETE. - LanguageController: sets validated pinakes_locale cookie (HttpOnly, SameSite=Lax, Secure on HTTPS, 1y); writes $_SESSION['locale'] only when a session already exists — no longer force-starts a session for anonymous switchers. events views fall back to I18n::getLocale() instead of hardcoded it_IT. No cache headers added except no-store on the token endpoint (never public — that is step 7). Upgrade-safe: no migration/new config; logged-in/admin/login/remember-me/ private-mode behavior identical. New tests/sessionless-anonymous-387.unit.php (39 checks: predicate incl. localized auth routes + sub-folder base paths, Csrf fail-closed, CsrfMiddleware accept/reject, private-mode gating with empty session). Full suite 137/137, PHPStan level 5 clean, soft-delete guard clean.
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📝 WalkthroughWalkthroughIl bootstrap evita la sessione per richieste anonime pubbliche. La locale viene ripristinata tramite cookie. Il token CSRF viene creato on demand tramite un nuovo endpoint. I test verificano policy di sessione, CSRF e private mode. ChangesSessioni anonime e locale
Token CSRF lazy
Validazione
Estimated code review effort: 4 (Complex) | ~45 minuti Merge Risk: 🔵 Low · up to The change enables sessionless anonymous pages and lazy CSRF token creation, but concurrent mutations may occasionally fail with a 403 and some authenticated users may see the default language instead of their selected locale. The PR is mergeable with explicit owner awareness or follow-up for these bounded issues and the route-classification drift risk. Sequence Diagram(s)sequenceDiagram
participant Browser
participant csrfHelper as csrf-helper.js
participant csrfEndpoint as GET /csrf-token
participant Csrf
Browser->>csrfHelper: richiesta state-changing senza token
csrfHelper->>csrfEndpoint: GET /csrf-token
csrfEndpoint->>Csrf: ensureToken()
Csrf-->>csrfEndpoint: token CSRF
csrfEndpoint-->>csrfHelper: JSON {token}
csrfHelper->>Browser: richiesta originale con X-CSRF-Token
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Inline comments:
In `@public/assets/js/csrf-helper.js`:
- Around line 73-89: In the token-fetch path of the CSRF helper, add a shared
in-flight Promise for the `/csrf-token` minting request so concurrent
state-changing calls reuse the same request and session. Clear the shared
Promise after both successful completion and failure, while preserving the
existing token caching and fallback behavior in `doFetch`.
In `@public/index.php`:
- Around line 511-520: Update the locale-selection logic around I18n::setLocale
so pinakes_locale is evaluated whenever no valid session locale was restored,
not only when the session is inactive. Preserve a valid session locale as the
higher-priority choice, and continue normalizing and validating the cookie
locale before applying it.
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📒 Files selected for processing (9)
app/Controllers/LanguageController.phpapp/Routes/web.phpapp/Support/SessionPolicy.phpapp/Views/frontend/event-detail.phpapp/Views/frontend/events.phpapp/Views/frontend/layout.phppublic/assets/js/csrf-helper.jspublic/index.phptests/sessionless-anonymous-387.unit.php
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Review completa e 2/2 finding CodeRabbit corretti in
Ulteriori hardening emersi dalla review: allow-list sessionless fail-safe per non rompere route plugin/session-backed, boundary corretta del base path, token mai inviato cross-origin, supporto |
🔍 adamsreview --full — PR #390 (sessionless anonymous path + lazy CSRF) — SECURITY-CRITICALRan security/opus + structural/opus lenses over ✅ Core safety VERIFIED (no CSRF bypass, no fixation, no null-deref)
🟠 F1 —
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…rees only (adamsreview F1, #390) SessionPolicy::SESSIONLESS_PATHS blanket-listed '/uploads/', which includes the private subtrees PrivateModeMiddleware keeps behind the login wall (/uploads/digital/, /uploads/archives/documents/, /uploads/storage/). No bypass today (the middleware still denies anonymous access), but stamping those private files session-free/cache-eligible would let the planned step-7 shared edge cache store and replay them → unauthenticated content disclosure / cross-user cache poisoning. Replace '/uploads/' with only the genuinely public subtrees — /uploads/copertine/ (book covers), /uploads/autori/ (author photos), /uploads/settings/ (branding) — mirroring PrivateModeMiddleware::ALLOWED_PREFIXES. Narrowing is fail-safe: any public path not listed simply falls back to session-required (works, just not cache-eligible), never a break. Private subtrees now keep the session and are not cache-eligible. New assertions in sessionless-anonymous-387.unit.php prove the three public subtrees stay sessionless and the three private subtrees keep the session. Sessionless suite 54/54, full suite 137/137, PHPStan clean.
1 participant
Step 6 of #387 (based on main; independent of #388/#389). Removes the two blockers to a shared edge cache for anonymous pages — the unconditional session and the per-session CSRF token in anonymous HTML. Security-critical: CSRF validation is unchanged; only when/how the token is minted for anonymous loads changes.
The fail-safe predicate (App\Support\SessionPolicy)
A request is sessionless ONLY when ALL hold: method GET/HEAD, no auth cookie (PHPSESSID / remember_token / csrf_login), path not an auth/contact route in any locale. Everything else (POST, any auth cookie, CLI, malformed) keeps the current session behavior. Default = session (correctness over cacheability).
CSRF stays protected
CsrfMiddleware/Csrf untouched — missing/invalid tokens still 403 on state-changing methods. Anonymous HTML carries an empty csrf meta; JS calls GET /csrf-token (session_start + Csrf::ensureToken, Cache-Control: no-store, private) right before a state-changing request. Auth pages + contact keep rendering session-backed form tokens exactly as before.
Other
Safety / tests
No cache headers except no-store on the token endpoint (never public — step 7). No migration/new config; logged-in/admin/login/remember-me/private-mode identical. tests/sessionless-anonymous-387.unit.php (39 checks): predicate incl. localized auth routes + sub-folder base paths, Csrf fail-closed, CsrfMiddleware accept/reject, private-mode gating. Full suite 137/137, PHPStan level 5 clean, soft-delete guard clean.
Residuals for step 7 (edge cache)
Cache only responses to sessionless-predicate requests (no cookies); vary the key on pinakes_locale; exclude auth/contact/csrf-token/language/uploads and everything under private mode.
Part of #387.
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Test