A registered service worker is a URL-shaped artifact (origin+path of
the worker script), so it goes in tracker_resources as a new
SERVICE_WORKER resource type. A Cache Storage bucket is an opaque
named string with no URL, so it goes in detected_trackers as a new
CACHE_STORAGE tracker type.
Frontend:
- StorageDetector wraps caches.open() and enumerates caches.keys()
on start to surface pre-existing buckets that pre-date the SDK
load (service workers commonly populate caches eagerly on
install).
- ThirdPartyDetector wraps navigator.serviceWorker.register() and
enumerates getRegistrations() on start.
Both wrappers degrade silently on insecure contexts where these APIs
are unavailable.
Signed-off-by: Émile Ré <emile@getprobo.com>
ThirdPartyDetector previously only saw <script src> and <iframe src>
because it scanned the DOM and watched mutations. Add a single
PerformanceObserver({type:'resource', buffered:true}) that picks up
everything the browser actually loaded:
- tracking pixels (<img>, <picture>, srcset)
- cross-origin stylesheets and web fonts
- fetch / XHR / sendBeacon / ping calls (SDK call-homes)
- video, audio, embed, object media
initiatorType is mapped to six new tracker_resource_type enum values
(IMAGE, STYLESHEET, FONT, BEACON, FETCH, MEDIA) and the existing
upsert path in tracker_resources picks them up unchanged.
Closes a real gap with headless cookie scanners: most SDKs phone home
via beacons after their script is gone, and the DOM scan never saw it.
Signed-off-by: Émile Ré <emile@getprobo.com>
