Detect source of Installation

[Flo]

Is it possible to programmatically detect from within a (cross-browser) extension from which store (CWS, Firefox Addons, Microsoft Store) it was installed from? Thanks!

[Patrick Kettner]

Hi Flo!

Chrome and Firefox expose chrome.runtime.getManifest().update_url, which will tell you the server that the extension was installed from (assuming it was from a public server - sideloaded extensions as well as some types of policy installations amy not have this attribute). Firefox has this property available in browser.runtime.getManifest().browser_specific_settings.update_url. I believe (but could be mistaken) that Mozilla doesn't add these values, it just reflects what is in the actual manifest file. However the object returned from brower.runtime,.getManifest() inherits from the a prototype that defined the key. So you can do `const isFirefox = "browser_specific_settings" in browser.runtime.getManifest()` and that should work as a gross inference of the environment.

best

patrick

On Wed, Aug 14, 2024 at 7:35 AM Flo <flori...@gmail.com> wrote:

Is it possible to programmatically detect from within a (cross-browser) extension from which store (CWS, Firefox Addons, Microsoft Store) it was installed from? Thanks!

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[Flo]

Awesome, thank you!