1448649 - Useragent missing device name therefore breaking resolution detection code

Status: RESOLVED DUPLICATE of bug 625238

(Firefox for Android Graveyard :: General, defect)

Description

[Daniel]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36

Steps to reproduce:

Device name detection from the useragent is required to determine determine device and dpi resolution. 

this is broken because the device name has been removed thinking it is not needed. 


Actual results:

Mozilla/5.0 (Android 7.0; Mobile; rv:59.0) Gecko/59.0 Firefox/59.0


Expected results:

This is the expected result like with Chrome / Samsung Internet browser

Mozilla/5.0 (Linux; Android 7.0; SAMSUNG SM-G950F Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/6.4 Chrome/56.0.2924.87 Mobile Safari/537.36

Comment 1

[Daniel]

See more details here https://github.com/immersive-web/webvr-polyfill-dpdb/issues/38#issuecomment-375738137

Comment 2

[Kevin Brosnan [Ex-Mozilla]]

This is intentional. User agents that are sent by clients should not be assumed to be correct. They are simple to spoof.

Comment 3

[Daniel]

What mindset are were talking here security ? I don't think for this purpose it cares about spoofing. This has to be a joke right ? It just needs the specific model number as all of them have different dpi. 

Chrome displays the correct information ? 

I will update that project that firefox will be problem with it. And update clients to stop using it. as Firefox on Android firstly won't support a native cardboard display in webvr, or daydream view for that matter.

 The cardboard polyfill fallback is required and obviously its dimensions are incorrect because of this mishmash idea this will somehow keep the browser secure.

Comment 4

[Kevin Brosnan [Ex-Mozilla]]

See the duped bug comments 10 and 20 among others. Along with https://groups.google.com/forum/#!topic/mozilla.dev.platform/Q9VmyhMzI04