1530076 - Add support for modifying the default referrer policy that is applied to third-party trackers when the cookie policy is set to reject third-party trackers

Status: RESOLVED FIXED

(Core :: Privacy: Anti-Tracking, enhancement)

Description

[(no longer active)]

It would be nice to add a couple of prefs that would allow us to control the default referrer policy that is applied to trackers so that we can explore imposing limitations there. This patch adds the required capability but doesn't change the current behaviour.

Comment 1

[(no longer active)]

Attachment: Bug 1530076 - Part 1: Add support for modifying the default referrer policy that is applied to third-party trackers when the cookie policy is set to reject third-party trackers;

This is more complex than merely modifying NS_GetDefaultReferrerPolicy()
because at the time most (all?) callers call nsIHttpChannel::SetReferrer/
nsIHttpChannel::SetReferrerWithPolicy before the channel is opened,
which means we won't know whether the channel is a tracking resource or
not yet. So we would need to re-evaluate this decision after that
information becomes available. For that, we need to remember the
original URI argument passed to these functions since that information
is currently destroyed and isn't persisted anywhere in the system.

Comment 2

[(no longer active)]

Attachment: Bug 1530076 - Part 2: Add a test for modifying the default referrer policy that is applied to third-party trackers when the cookie policy is set to reject third-party trackers;

Depends on D20901

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/bde30e08a003
Part 1: Add support for modifying the default referrer policy that is applied to third-party trackers when the cookie policy is set to reject third-party trackers; r=valentin
https://hg.mozilla.org/integration/autoland/rev/6b2a08035ed5
Part 2: Add a test for modifying the default referrer policy that is applied to third-party trackers when the cookie policy is set to reject third-party trackers; r=baku

Comment 4

[Natalia Csoregi [:nataliaCs]]

https://hg.mozilla.org/mozilla-central/rev/bde30e08a003
https://hg.mozilla.org/mozilla-central/rev/6b2a08035ed5