4 files changed, 82 insertions, 8 deletions

diff --git a/impls/monero.dart/lib/monero.dart b/impls/monero.dart/lib/monero.dart
index 4fcc970..7b6eac3 100644
--- a/impls/monero.dart/lib/monero.dart
+++ b/impls/monero.dart/lib/monero.dart
@@ -3607,6 +3607,24 @@ bool WalletManager_verifyWalletPassword(
   return s;
 }
 
+int WalletManager_queryWalletDevice(
+    WalletManager wm_ptr, {
+      required String keysFileName,
+      required String password,
+      required int kdfRounds,
+    }) {
+  debugStart?.call('MONERO_WalletManager_queryWalletDevice');
+  lib ??= MoneroC(DynamicLibrary.open(libPath));
+  final keysFileName_ = keysFileName.toNativeUtf8().cast<Char>();
+  final password_ = password.toNativeUtf8().cast<Char>();
+  final s = lib!.MONERO_WalletManager_queryWalletDevice(
+      wm_ptr, keysFileName_, password_, kdfRounds);
+  calloc.free(keysFileName_);
+  calloc.free(password_);
+  debugEnd?.call('MONERO_WalletManager_queryWalletDevice');
+  return s;
+}
+
 List<String> WalletManager_findWallets(WalletManager wm_ptr,
     {required String path}) {
   debugStart?.call('MONERO_WalletManager_findWallets');
diff --git a/impls/monero.dart/lib/src/generated_bindings_monero.g.dart b/impls/monero.dart/lib/src/generated_bindings_monero.g.dart
index 039fbf9..cd2124b 100644
--- a/impls/monero.dart/lib/src/generated_bindings_monero.g.dart
+++ b/impls/monero.dart/lib/src/generated_bindings_monero.g.dart
@@ -4911,14 +4911,14 @@ class MoneroC {
           bool Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Char>,
               ffi.Pointer<ffi.Char>, bool, int)>();
 
-  bool MONERO_WalletManager_queryWalletDevice(
-    int device_type,
+  int MONERO_WalletManager_queryWalletDevice(
+    ffi.Pointer<ffi.Void> wm_ptr,
     ffi.Pointer<ffi.Char> keys_file_name,
     ffi.Pointer<ffi.Char> password,
     int kdf_rounds,
   ) {
     return _MONERO_WalletManager_queryWalletDevice(
-      device_type,
+      wm_ptr,
       keys_file_name,
       password,
       kdf_rounds,
@@ -4927,15 +4927,15 @@ class MoneroC {
 
   late final _MONERO_WalletManager_queryWalletDevicePtr = _lookup<
       ffi.NativeFunction<
-          ffi.Bool Function(
-              ffi.Int,
+          ffi.Int Function(
+              ffi.Pointer<ffi.Void>,
               ffi.Pointer<ffi.Char>,
               ffi.Pointer<ffi.Char>,
               ffi.Uint64)>>('MONERO_WalletManager_queryWalletDevice');
   late final _MONERO_WalletManager_queryWalletDevice =
       _MONERO_WalletManager_queryWalletDevicePtr.asFunction<
-          bool Function(
-              int, ffi.Pointer<ffi.Char>, ffi.Pointer<ffi.Char>, int)>();
+          int Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Char>,
+              ffi.Pointer<ffi.Char>, int)>();
 
   ffi.Pointer<ffi.Char> MONERO_WalletManager_findWallets(
     ffi.Pointer<ffi.Void> wm_ptr,
diff --git a/impls/monero.dart/lib/src/ledger.dart b/impls/monero.dart/lib/src/ledger.dart
new file mode 100644
index 0000000..166bcf4
--- /dev/null
+++ b/impls/monero.dart/lib/src/ledger.dart
@@ -0,0 +1,55 @@
+import 'dart:async';
+import 'dart:ffi';
+import 'dart:typed_data';
+
+import 'package:ffi/ffi.dart';
+import 'package:ledger_flutter_plus/ledger_flutter_plus.dart';
+import 'package:monero/monero.dart' as monero;
+
+Timer? _ledgerExchangeTimer;
+String _lastLedgerRequest = '';
+
+void enableLedgerExchange(monero.wallet ptr, LedgerConnection connection) {
+  _ledgerExchangeTimer = Timer.periodic(Duration(milliseconds: 1), (_) async {
+    final ledgerRequestLength = monero.Wallet_getSendToDeviceLength(ptr);
+    final ledgerRequest = monero.Wallet_getSendToDevice(ptr)
+        .cast<Uint8>()
+        .asTypedList(ledgerRequestLength);
+    if (ledgerRequestLength > 0 && _lastLedgerRequest != ledgerRequest.join()) {
+      _lastLedgerRequest = ledgerRequest.join();
+
+      final response = await exchange(connection, ledgerRequest);
+
+      final Pointer<Uint8> result = malloc<Uint8>(response.length);
+      for (var i = 0; i < response.length; i++) {
+        result.asTypedList(response.length)[i] = response[i];
+      }
+
+      monero.Wallet_setDeviceReceivedData(
+          ptr, result.cast<UnsignedChar>(), response.length);
+
+      monero.Wallet_setDeviceSendData(
+          ptr, malloc<Uint8>(0).cast<UnsignedChar>(), 0);
+    }
+  });
+}
+
+void disableLedgerExchange() {
+  _ledgerExchangeTimer?.cancel();
+}
+
+Future<Uint8List> exchange(LedgerConnection connection, Uint8List data) async =>
+    connection.sendOperation<Uint8List>(ExchangeOperation(data));
+
+class ExchangeOperation extends LedgerOperation<Uint8List> {
+  final Uint8List inputData;
+
+  ExchangeOperation(this.inputData);
+
+  @override
+  Future<Uint8List> read(ByteDataReader reader) async =>
+      reader.read(reader.remainingLength);
+
+  @override
+  Future<List<Uint8List>> write(ByteDataWriter writer) async => [inputData];
+}
diff --git a/impls/monero.dart/pubspec.yaml b/impls/monero.dart/pubspec.yaml
index 174a781..577dcbe 100644
--- a/impls/monero.dart/pubspec.yaml
+++ b/impls/monero.dart/pubspec.yaml
@@ -8,8 +8,9 @@ environment:
 
 dependencies:
   ffi: ^2.1.0
+  ledger_flutter_plus: ^1.2.5
 
 dev_dependencies:
   lints: ^5.0.0
   test: ^1.24.0
-  ffigen: ^14.0.0
\ No newline at end of file
+  ffigen: ^14.0.0