PSA: DNR rules will apply to extension initiated main frame requests

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Oliver Dunk

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2025年1月9日 12:08:361月9日
收件人 Chromium Extensions

Hi all,

Starting in Chrome 134, Declarative Net Request rules will apply to main frame requests for web resources initiated by extensions.

This includes:

  • Clicking a link to a web page on a chrome-extension:// page, including a new tab page override
  • Using the `window.open` API within an extension, or `chrome.tabs.create` with `openerTabId` set to a tab containing an extension page
  • Calls to the `chrome.tabs.update` API
This is the case even if the rules are from an extension other than the one initiating the request.

Generally, extensions are not able to act on requests made by other extensions. However, this is a case where it is desirable for the request to behave as if it was initiated by a user.

This matches the behavior of the `chrome.webRequest` API and resolves https://issues.chromium.org/382670035 - thanks to wOxxOm for the report.

Thanks,
Oliver on behalf of Chrome Extensions DevRel

woxxom

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2025年1月9日 14:00:561月9日
收件人 Chromium Extensions、Oliver Dunk
To add more context, this will match the way DNR was working before Chrome 128 introduced the regression half a year ago.

Uladzimir Yankovich

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2025年1月10日 10:01:541月10日
收件人 Chromium Extensions、woxxom、Oliver Dunk
To be clear, will this change affect how DNR works for sub-frames (iFrames)?

woxxom

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2025年1月10日 10:04:331月10日
收件人 Chromium Extensions、Uladzimir Yankovich、woxxom、Oliver Dunk
No. The main_frame navigation is about the tab's main document. I guess this inherently confusing term comes from the sources of chromium where everything is a frame technically.

Uladzimir Yankovich

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2025年1月10日 10:09:181月10日
收件人 woxxom、Chromium Extensions、Oliver Dunk
Thanks a lot!


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Uladzimir Yankovich.
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