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ray-lothian / UserAgent-Switcher

A User-Agent spoofer browser extension that is highly configurable
https://webextension.org/listing/useragent-switcher.html
Mozilla Public License 2.0
949 stars 145 forks source link

Plugin makes GitLab "Checking browser then redirect" falls into infinite loop #121

Open RigoLigoRLC opened 3 years ago

RigoLigoRLC commented 3 years ago

I was signing in my GitLab account yesterday and found out the browser checking page won't successfully redirect. After some addon disabling, I found that it is this one that made it fail to redirect.

ray-lothian commented 3 years ago

For login pages, it is possible to use different methods to detect the user browser. If for instance you are on Chrome and use FF user-agent, the website can simply detect it (even with a CSS feature detection). Since the UA does not match with your browser, the protection layer of the website does not allow you to pass. To me, the only workaround is to add this page to the exception list unless someone can find what else we can spoof.

https://github.com/ray-lothian/UserAgent-Switcher/blob/master/extension/firefox/common.js#L35

RigoLigoRLC commented 3 years ago

For login pages, it is possible to use different methods to detect the user browser. If for instance you are on Chrome and use FF user-agent, the website can simply detect it (even with a CSS feature detection). Since the UA does not match with your browser, the protection layer of the website does not allow you to pass. To me, the only workaround is to add this page to the exception list unless someone can find what else we can spoof.

https://github.com/ray-lothian/UserAgent-Switcher/blob/master/extension/firefox/common.js#L35

One question though is that I did not alter my UA with the plugin; I even tried setting and resetting it to make sure the UA isn't being affected by the plugin, how could the check still fail?

ray-lothian commented 3 years ago

So the action button was grey on GitLab? Can you reproduce this issue?

RigoLigoRLC commented 3 years ago

Not yet. In most of the times a check is not required.

On Tue, May 4, 2021, 4:27 PM ray-lothian @.***> wrote:

So the action button was grey on GitLab? Can you reproduce this issue?

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RigoLigoRLC commented 3 years ago

If you have any diagnostics that I can run when I encounter the problem again, please send them here. Thanks.