[Auth] App crashes on Login with Firefox as only available browser

[echtnurich]

Describe the bug As of right now, Firefox for Android is blocklisted due to issues with callback during auth. If there is no other Browser installed, the App will crash

To Reproduce Steps to reproduce the behavior:

1. Install Firefox for Android
2. Removed/Deactivate all other Browsers
3. Try to authenticate with a Check-in provider

Expected behavior It Just works.

Proposed solutions:

1. Do not Blocklist Browsers outright
2. Prompt the User to Use blocklisted (greylisted?) Browsers, explaining there might be issues.

Smartphone:

• Device: Fairphone 3
• OS: Android 11
• Browser Firefox

[jheubuch]

I think this could be done by fixing the OAuth Callback URL to a custom scheme, not https.

Additionally the ActivityNotFoundException should be caught.

https://sentry.traewelldroid.de/organizations/traewelldroid/issues/162/events/8a7e3574303a411ab15ab4f32c3ec287/

[jheubuch]

Just need to re-open that open 🥴

[echtnurich]

Just to bump this, multiple people told me that they would use the App, if only they could log in without installing another browser.

It would really be nice to have a way to still use FF, forfeiting all rights to complain about FF-related bugs of course. ;)

[jheubuch]

Yeah, sure, that's why I reopened the issue 🥴

[rugk]

Oh uff, I know for other apps this workflow works/worked. Is there already a bug report at Mozilla for this? Or don't they do anything wrong and your app should not crash uhm…

[jheubuch]

I added an HTTP redirect rule to my webserver which redirects to my app custom theme when accessing via Browser. This results in automatically opening Träwelldroid after authenticating