1842067 - Clear bounce tracker state by site host + OA

Status: RESOLVED FIXED

(Core :: Privacy: Anti-Tracking, task, P2)

Description

[Emma Zühlcke [:emz]]

In the current WIP implementation we're clearing data via nsIClearDataService::DeleteDataFromBaseDomain which clears both unpartitioned first party storage and third-party partitioned storage across all OriginAttributes.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1894044#c3 for details.

Comment 1

[Emma Zühlcke [:emz]]

We need to clear by site host + OriginAttributes because we need to:

1. Clear site wide, because cookies are not always origin bound
2. Clear exact OriginAttributes so that behavior in one context (e.g. a container tab) doesn't bleed over into another. Same for private browsing and normal browsing.

Comment 2

[Emma Zühlcke [:emz]]

https://github.com/privacycg/nav-tracking-mitigations/pull/78 changes the spec so that we clear unpartitioned cookies and partitioned cookies, but only where the top site matches the bounce host.

Comment 3

[Emma Zühlcke [:emz]]

Attachment: Bug 1842067 - Filter by OriginAttributesPattern when purging bounce tracker site data. r=#anti-tracking!

Comment 4

[Emma Zühlcke [:emz]]

Attachment: Bug 1842067 - Move BTP purging call into separate method. r=#anti-tracking!

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/69105a173126
Filter by OriginAttributesPattern when purging bounce tracker site data. r=bvandersloot
https://hg.mozilla.org/integration/autoland/rev/1f17cc6112f7
Move BTP purging call into separate method. r=anti-tracking-reviewers,bvandersloot

Comment 6

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/69105a173126
https://hg.mozilla.org/mozilla-central/rev/1f17cc6112f7