removeparam rule not being enforced

[dportvine]

Google Chrome
uBlock Origin Lite 2024.6.17.766

Does this rule not work due to MV3 limitations?

*$removeparam=xtor ~> AdGuard URL Tracking Protection

https://www.bbc.com/ukrainian/articles/c7223ygzmvmo?xtor=AL-73-%5Bpartner%5D-%5Bukr%5D-%5Bheadline%5D-%5Bukrainian%5D-%5Bbizdev%5D-%5Bisapi%5D

[gorhill]

Weird, it doesn't work in latest release, but it works when I compile a local version of uBOL.

---

Now it works in the latest release, not sure what is going on.

[dportvine]

Still doesn't work for me. 🤷🏻‍♂️

[dportvine]

Very weird... Re-enabling the basic or regional subscription helps me.

Video

Video_2024-06-21_231213.mp4

[gorhill]

@garry-ut99 Thanks for the investigation, I confirm there is an issue with how the DNR rule works.

Simple repro steps is to take two generic removeparam rules from each default and adguard-spyware-url.json ruleset, and pick a parameter in each rule not found in the other, and see whether both parameters are removed. Example (as of writing):

vgo_ee is found in a generic removeparam rule found in default.json ruleset, xtor is found in a generic removeparam rule in adguard-spyware-url.json. When navigating to URL below, only one of the parameter is removed.

https://example.com/?vgo_ee=1&xtor=1

Probably related webextensions issue: w3c/webextensions#468

[subham8907]

Hello,

I'm working on an MV3 extension project to remove nasty tracking parameters from URLs. I've encountered an issue with DNR (Declarative Net Request) limitations:

DNR claims:

• 30,000 static rules work
• 50 rulesets can work at the same time

But from my research, there's a hidden limit:

• If you're developing an extension to remove parameters, you should know that if 1 rule contains 30 or 40 parameters, you can't add 30 similar rules
• There's a limit to that

Real example:

• uBlock Origin Lite's adguard-spyware-url.json has 499 rules in the JSON file
• But not all rules are enforced because of rule complexity

Solution:
You have to divide those 499 rules into multiple JSON files if you want to enforce all 499 rules together.

[subham8907]

So in short before you reached 30000 limit you exaused 50 ruleset limit

[stephenhawk8054]

@gorhill I see a case where the removed parameters left ? in the URL: https://www.reddit.com/r/uBlockOrigin/comments/1f9q2nt/google_autotagging_trackers_not_being_blocked_by/lo1sjzo/

STR:

1. Go to google.com and search bitdefender
2. Click on 1st link to go to https://www.bitdefender.com
3. The URL appears as https://www.bitdefender.com?

In the network console, I see https://www.bitdefender.com/?srsltid=AfmBOootNghSoi8YRDJqc7axmi9SgWPuwphdq-pZl-CI-PhPhNjk8U0R being redirected as expected due to the filter $removeparam=srsltid in default privacy list, but didn't expect ? to be left there.

Is it an issue from MV3 itself?

[gorhill]

https://issues.chromium.org/issues/40886355