App crashing when using WebAuthn

[LBreda]

trafficstars

⚠️ Before posting ⚠️

• [X] This is a bug, not a question or an enhancement.
• [X] I've searched for similar issues and didn't find a duplicate.
• [X] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• [X] I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

1. Open the app
2. Write down my server address
3. Log in
4. Select the WebAuthn second factor option
5. Confirm on the system intent my will to use a key

Expected behaviour

Initiation of the key authorization process

Actual behaviour

Application crash

Android version

11

Device brand and model

Xiaomi Mi 9T

Stock or custom OS?

Stock

Nextcloud android app version

3.27.0

Nextcloud server version

Hub 7 (28.0.2)

Using a reverse proxy?

Yes

Android logs

No response

Server error logs

No response

Additional information

No response

[joshtrichards]

Do you have the crash output/stack trace?

[LBreda]

Cause of error

Exception in thread "main" java.lang.RuntimeException: Error receiving broadcast Intent { act=de.cotech.hw.ACTION_USB flg=0x10 pkg=com.nextcloud.client } in de.cotech.hw.internal.transport.usb.UsbConnectionDispatcher$1@dfceb0d
    at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0$LoadedApk$ReceiverDispatcher$Args(LoadedApk.java:1572)
    at android.app.-$$Lambda$LoadedApk$ReceiverDispatcher$Args$_BumDX2UKsnxLVrE6UJsJZkotuA.run(Unknown Source:2)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:236)
    at android.app.ActivityThread.main(ActivityThread.java:7876)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
Caused by: Exception in thread "main" java.lang.NullPointerException: Attempt to invoke virtual method 'int android.hardware.usb.UsbDevice.getInterfaceCount()' on a null object reference
    at de.cotech.hw.internal.transport.usb.UsbDeviceManager.isRelevantDevice(UsbDeviceManager.java:163)
    at de.cotech.hw.internal.transport.usb.UsbConnectionDispatcher.handleConnectedUsbDevice(UsbConnectionDispatcher.java:93)
    at de.cotech.hw.internal.transport.usb.UsbConnectionDispatcher.access$100(UsbConnectionDispatcher.java:48)
    at de.cotech.hw.internal.transport.usb.UsbConnectionDispatcher$1.onReceive(UsbConnectionDispatcher.java:80)
    at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0$LoadedApk$ReceiverDispatcher$Args(LoadedApk.java:1562)
    at android.app.-$$Lambda$LoadedApk$ReceiverDispatcher$Args$_BumDX2UKsnxLVrE6UJsJZkotuA.run(Unknown Source:2)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:236)
    at android.app.ActivityThread.main(ActivityThread.java:7876)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)

App information

• ID: com.nextcloud.client
• Version: 30270090
• Build flavor: gplay

Device information

• Brand: Xiaomi
• Device: davinci
• Model: Mi 9T
• Id: RKQ1.200826.002
• Product: davinci

Firmware

• SDK: 30
• Release: 11
• Incremental: V12.1.4.0.RFJMIXM

[tobiasKaminsky]

What key do you use and how is it connected? NFC or real USB?

[LBreda]

It is a SoloKey version 2, connected via USB. No issue with the same key on other applications and websites, and no issue with the same key on the same NextCloud instance via browser (both the phone itself or a PC).

[tobiasKaminsky]

I only have this one https://www.yubico.com/de/product/security-key-nfc-by-yubico/ I connected it via usb C -> Usb A connector. And it works for me.

Can you point me to your exact key and specs?

[LBreda]

https://solokeys.com/collections/all/products/solo-2a-nfc-security-key-built-with-trussed%C2%AE

It is a pretty normal FIDO key, I use it everywhere.

[tobiasKaminsky]

Can you test NFC?

[LBreda]

Oh, I didn't try before. Tried now, and it works. Still it doesn't with USB.