Fix FIDO reset over NFC

NEWS

@@ -9,6 +9,7 @@
  ** PIV: Add output format for public key when generating keys.
  ** Desktop: Window hidden/shown state no longer saved when closing the app,
     use --hidden to start the app in a hidden to systray state.
+ ** Desktop: Fix FIDO reset over NFC.
  ** Windows: Add option to launch Windows Settings for FIDO management.
  ** Android: Increase read timeout for NFC, improving compatibility with older YubiKeys.
 

helper/helper/fido.py

@@ -124,10 +124,11 @@ class Ctap2Node(RpcNode):
         removed = False
         while not event.wait(0.5):
             try:
-                with dev.open_connection(FidoConnection):
-                    if removed:
-                        sleep(1.0)  # Wait for the device to settle
-                        return dev.open_connection(FidoConnection)
+                conn = dev.open_connection(FidoConnection)
+                if removed:
+                    sleep(1.0)  # Wait for the device to settle
+                    return conn
+                conn.close()
             except CardConnectionException:
                 pass  # Expected, ignore
             except NoCardException:

lib/app/views/reset_dialog.dart

@@ -68,12 +68,19 @@ class _ResetDialogState extends ConsumerState<ResetDialog> {
   StreamSubscription<InteractionEvent>? _subscription;
   InteractionEvent? _interaction;
   int _currentStep = -1;
-  final _totalSteps = 3;
+  late final int _totalSteps;
+
+  @override
+  void initState() {
+    super.initState();
+    final nfc = widget.data.node.transport == Transport.nfc;
+    _totalSteps = nfc ? 2 : 3;
+  }
 
   String _getMessage() {
     final l10n = AppLocalizations.of(context)!;
     final nfc = widget.data.node.transport == Transport.nfc;
-    if (_currentStep == 3) {
+    if (_currentStep == _totalSteps) {
       return l10n.l_fido_app_reset;
     }
     return switch (_interaction) {
@@ -104,7 +111,7 @@ class _ResetDialogState extends ConsumerState<ResetDialog> {
       title: Text(l10n.s_factory_reset),
       key: factoryResetCancel,
       onCancel: switch (_application) {
-        Capability.fido2 => _currentStep < 3
+        Capability.fido2 => _currentStep < _totalSteps
             ? () {
                 _currentStep = -1;
                 _subscription?.cancel();
@@ -113,7 +120,7 @@ class _ResetDialogState extends ConsumerState<ResetDialog> {
         _ => null,
       },
       actions: [
-        if (_currentStep < 3)
+        if (_currentStep < _totalSteps)
           TextButton(
             onPressed: switch (_application) {
               Capability.fido2 => _subscription == null

lib/version.dart

@@ -2,4 +2,4 @@
 // This file is generated by running ./set-version.py <version> <build>
 
 const String version = '6.4.0';
-const int build = 60400;
+const int build = 60401;

pubspec.yaml

@@ -18,7 +18,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
 # This field is updated by running ./set-version.py <version>
 # DO NOT MANUALLY EDIT THIS!
-version: 6.4.0+60400
+version: 6.4.0+60401
 
 environment:
   sdk: '>=3.0.0 <4.0.0'