feat: zano hf + bip39

Author: MrCyjaneK

cw_monero/pubspec.lock

@@ -545,8 +545,8 @@ packages:
     dependency: "direct main"
     description:
       path: "impls/monero.dart"
-      ref: "3bfb3856a838f2bf6b729501837bb0295dedf25d"
-      resolved-ref: "3bfb3856a838f2bf6b729501837bb0295dedf25d"
+      ref: "4f23e050f7dec0bbbbe27c36c8e511bb3f52868a"
+      resolved-ref: "4f23e050f7dec0bbbbe27c36c8e511bb3f52868a"
       url: "https://github.com/mrcyjanek/monero_c.git"
     source: git
     version: "0.0.0"

cw_monero/pubspec.yaml

@@ -26,7 +26,7 @@ dependencies:
   monero:
     git:
       url: https://github.com/mrcyjanek/monero_c.git
-      ref: 3bfb3856a838f2bf6b729501837bb0295dedf25d
+      ref: 4f23e050f7dec0bbbbe27c36c8e511bb3f52868a
       path: impls/monero.dart
   mutex: ^3.1.0
   ledger_flutter_plus: ^1.4.1

cw_wownero/pubspec.lock

@@ -449,8 +449,8 @@ packages:
     dependency: "direct main"
     description:
       path: "impls/monero.dart"
-      ref: "3bfb3856a838f2bf6b729501837bb0295dedf25d"
-      resolved-ref: "3bfb3856a838f2bf6b729501837bb0295dedf25d"
+      ref: "4f23e050f7dec0bbbbe27c36c8e511bb3f52868a"
+      resolved-ref: "4f23e050f7dec0bbbbe27c36c8e511bb3f52868a"
       url: "https://github.com/mrcyjanek/monero_c.git"
     source: git
     version: "0.0.0"

cw_wownero/pubspec.yaml

@@ -24,7 +24,7 @@ dependencies:
   monero:
     git:
       url: https://github.com/mrcyjanek/monero_c.git
-      ref: 3bfb3856a838f2bf6b729501837bb0295dedf25d
+      ref: 4f23e050f7dec0bbbbe27c36c8e511bb3f52868a
       path: impls/monero.dart
   mutex: ^3.1.0
 

cw_zano/lib/api/model/transfer.dart

@@ -65,8 +65,14 @@ class Transfer {
         remoteAliases: json['remote_aliases'] == null ? [] : (json['remote_aliases'] as List<
             dynamic>).cast<String>(),
         showSender: json['show_sender'] as bool? ?? false,
-        subtransfers: (json['subtransfers'] as List<dynamic>? ?? []).map((e) =>
-            Subtransfer.fromJson(e as Map<String, dynamic>)).toList(),
+        subtransfers: (json['subtransfers_by_pid'] as List<dynamic>? ?? [])
+            .whereType<Map<String, dynamic>>()
+            .expand(
+              (group) => (group['subtransfers'] as List<dynamic>? ?? [])
+                  .whereType<Map<String, dynamic>>()
+                  .map(Subtransfer.fromJson),
+            )
+            .toList(),
         timestamp: json['timestamp'] as int? ?? 0,
         transferInternalIndex: json['transfer_internal_index'] == null
             ? 0

cw_zano/lib/bip39_seed.dart

@@ -0,0 +1,18 @@
+import 'dart:typed_data';
+
+import 'package:bip39/bip39.dart' as bip39;
+
+bool isBip39Seed(String mnemonic) => bip39.validateMnemonic(mnemonic);
+
+String generateBip39Mnemonic({int strength = 128}) =>
+    bip39.generateMnemonic(strength: strength);
+
+String getSecretDerivationFromBip39(String mnemonic, {String passphrase = ''}) {
+  final seed = bip39.mnemonicToSeed(mnemonic, passphrase: passphrase);
+  return Uint8List.fromList(seed.sublist(0, 32)).toHexString();
+}
+
+extension on Uint8List {
+  String toHexString() =>
+      map((b) => b.toRadixString(16).padLeft(2, '0')).join();
+}

cw_zano/lib/zano_wallet.dart

@@ -33,6 +33,7 @@ import 'package:cw_zano/zano_wallet_api.dart';
 import 'package:cw_zano/zano_wallet_exceptions.dart';
 import 'package:cw_zano/zano_wallet_service.dart';
 import 'package:cw_zano/api/model/balance.dart';
+import 'package:cw_zano/bip39_seed.dart';
 
 import 'package:mobx/mobx.dart';
 
@@ -132,14 +133,27 @@ abstract class ZanoWalletBase
     final wallet = ZanoWallet(credentials.walletInfo!, await credentials.walletInfo!.getDerivationInfo(), credentials.password!);
     await wallet.initWallet();
     final path = await pathForWallet(name: credentials.name, type: credentials.walletInfo!.type);
-    final createWalletResult = await wallet.createWallet(path, credentials.password!);
+    final strength = credentials.seedPhraseLength == 24 ? 256 : 128;
+    final providedMnemonic =
+        credentials is ZanoNewWalletCredentials ? credentials.mnemonic : null;
+    final mnemonic = providedMnemonic ?? generateBip39Mnemonic(strength: strength);
+    final passphrase = credentials.passphrase ?? '';
+    final secretDerivation = getSecretDerivationFromBip39(mnemonic, passphrase: passphrase);
+    final creationTimestamp = DateTime.now().millisecondsSinceEpoch ~/ 1000;
+    final createWalletResult = await wallet.restoreWalletFromDerivations(
+      path,
+      credentials.password!,
+      secretDerivation,
+      creationTimestamp: creationTimestamp,
+    );
     await wallet.initWallet();
-    await wallet.parseCreateWalletResult(createWalletResult);
+    await wallet.setBip39Secrets(mnemonic: mnemonic, creationTimestamp: creationTimestamp);
     if (credentials.passphrase != null) {
       await wallet.setPassphrase(credentials.passphrase!);
-      wallet.seed = await createWalletResult.seed(wallet);
-      wallet.passphrase = await wallet.getPassphrase();
     }
+    await wallet.parseCreateWalletResult(createWalletResult);
+    wallet.seed = mnemonic;
+    wallet.passphrase = await wallet.getPassphrase();
     await wallet.init(createWalletResult.wi.address);
     return wallet;
   }
@@ -149,15 +163,33 @@ abstract class ZanoWalletBase
     final wallet = ZanoWallet(credentials.walletInfo!, await credentials.walletInfo!.getDerivationInfo(), credentials.password!);
     await wallet.initWallet();
     final path = await pathForWallet(name: credentials.name, type: credentials.walletInfo!.type);
-    final createWalletResult = await wallet.restoreWalletFromSeed(
-        path, credentials.password!, credentials.mnemonic, credentials.passphrase);
+    final passphrase = credentials.passphrase ?? '';
+    final CreateWalletResult createWalletResult;
+    if (isBip39Seed(credentials.mnemonic)) {
+      final secretDerivation =
+          getSecretDerivationFromBip39(credentials.mnemonic, passphrase: passphrase);
+      final creationTimestamp = (credentials.height ?? 0) > 0 ? credentials.height! : 0;
+      createWalletResult = await wallet.restoreWalletFromDerivations(
+        path,
+        credentials.password!,
+        secretDerivation,
+        creationTimestamp: creationTimestamp,
+      );
+      await wallet.setBip39Secrets(
+        mnemonic: credentials.mnemonic,
+        creationTimestamp: creationTimestamp,
+      );
+    } else {
+      createWalletResult = await wallet.restoreWalletFromSeed(
+          path, credentials.password!, credentials.mnemonic, credentials.passphrase);
+    }
     await wallet.initWallet();
-    await wallet.parseCreateWalletResult(createWalletResult);
     if (credentials.passphrase != null) {
       await wallet.setPassphrase(credentials.passphrase!);
-      wallet.seed = await createWalletResult.seed(wallet);
-      wallet.passphrase = await wallet.getPassphrase();
     }
+    await wallet.parseCreateWalletResult(createWalletResult);
+    wallet.seed = isBip39Seed(credentials.mnemonic) ? credentials.mnemonic : await createWalletResult.seed(wallet);
+    wallet.passphrase = await wallet.getPassphrase();
     await wallet.init(createWalletResult.wi.address);
     return wallet;
   }
@@ -210,6 +242,19 @@ abstract class ZanoWalletBase
       transactionHistory.addMany(transactions);
       await transactionHistory.save();
     }
+    await _ensureBip39DerivationInfo();
+  }
+
+  Future<void> _ensureBip39DerivationInfo() async {
+    if (await getBip39Mnemonic() == null) {
+      return;
+    }
+    final di = await walletInfo.getDerivationInfo();
+    if (di.derivationType == DerivationType.bip39) {
+      return;
+    }
+    di.derivationType = DerivationType.bip39;
+    await di.save();
   }
 
   @override
@@ -305,12 +350,13 @@ abstract class ZanoWalletBase
   Future<Map<String, ZanoTransactionInfo>> fetchTransactions() async {
     try {
       final transfers = <Transfer>[];
+      var offset = 0;
       late GetRecentTxsAndInfoResult result;
       do {
-        result = await getRecentTxsAndInfo(offset: 0, count: _txChunkSize);
-        // _lastTxIndex += result.transfers.length;
+        result = await getRecentTxsAndInfo(offset: offset, count: _txChunkSize);
         transfers.addAll(result.transfers);
-      } while (result.lastItemIndex + 1 < result.totalTransfers);
+        offset = result.lastItemIndex + 1;
+      } while (offset < result.totalTransfers);
       return Transfer.makeMap(transfers, zanoAssets, currentDaemonHeight);
     } catch (e) {
       printV((e.toString()));

cw_zano/lib/zano_wallet_api.dart

@@ -123,7 +123,25 @@ mixin ZanoWalletApi {
     return _setWalletSecret("passphrase", passphrase);
   }
 
+  Future<String?> getBip39Mnemonic() async {
+    return await _getWalletSecret("bip39_mnemonic");
+  }
+
+  Future<void> setBip39Secrets({
+    required String mnemonic,
+    required int creationTimestamp,
+  }) async {
+    final secrets = await _getSecrets();
+    secrets["bip39_mnemonic"] = mnemonic;
+    secrets["creation_timestamp"] = creationTimestamp.toString();
+    await _setSecrets(secrets);
+  }
+
   Future<String> getSeed() async {
+    final bip39Mnemonic = await getBip39Mnemonic();
+    if (bip39Mnemonic != null) {
+      return bip39Mnemonic;
+    }
     final passphrase = await getPassphrase();
     final respStr = await invokeMethod("get_restore_info", {"seed_password": passphrase??""});
     final resp = convert.json.decode(respStr);
@@ -319,6 +337,43 @@ mixin ZanoWalletApi {
     return result;
   }
 
+  Future<CreateWalletResult> restoreWalletFromDerivations(
+    String path,
+    String password,
+    String secretDerivation, {
+    bool isAuditable = false,
+    required int creationTimestamp,
+  }) async {
+    printV('restore_wallet_from_derivations path $path');
+    final params = jsonEncode({
+      "creation_timestamp": creationTimestamp,
+      "is_auditable": isAuditable,
+      "pass": password,
+      "path": path,
+      "secret_derivation": secretDerivation,
+    });
+    final json = await callSyncMethod('restore_from_derivations', 0, params);
+    final map = jsonDecode(json) as Map<String, dynamic>?;
+    if (map?['error'] != null) {
+      final code = map!['error']!['code'] ?? '';
+      final message = map['error']!['message'] ?? '';
+      if (code == Consts.errorWrongSeed) {
+        throw RestoreFromSeedsException(
+            'Error restoring wallet\nPlease check the seed words are correct. Additionally, if you created this wallet with a passphrase please add it under the Advanced Settings page.');
+      } else if (code == Consts.errorAlreadyExists) {
+        throw RestoreFromSeedsException('Error restoring wallet, already exists');
+      }
+      throw RestoreFromSeedsException('Error restoring wallet, $message ($code)');
+    }
+    if (map?['result'] == null) {
+      throw RestoreFromSeedsException('Error restoring wallet, empty response');
+    }
+    final result = CreateWalletResult.fromJson(map!['result'] as Map<String, dynamic>);
+    openWalletCache[path] = result;
+    printV('restore_wallet_from_derivations ${result.name} ${result.wi.address}');
+    return result;
+  }
+
   Future<CreateWalletResult> restoreWalletFromSeed(String path, String password, String seed, String? passphrase) async {
     printV('restore_wallet path $path');
     final json = zano.PlainWallet_restore(seed, path, password, passphrase??'');

cw_zano/lib/zano_wallet_service.dart

@@ -14,7 +14,14 @@ import 'package:hive/hive.dart';
 import 'package:monero/zano.dart' as zano;
 
 class ZanoNewWalletCredentials extends WalletCredentials {
-  ZanoNewWalletCredentials({required String name, String? password, required String? passphrase}) : super(name: name, password: password, passphrase: passphrase);
+  ZanoNewWalletCredentials({
+    required String name,
+    String? password,
+    required String? passphrase,
+    this.mnemonic,
+  }) : super(name: name, password: password, passphrase: passphrase);
+
+  final String? mnemonic;
 }
 
 class ZanoRestoreWalletFromSeedCredentials extends WalletCredentials {

cw_zano/pubspec.lock

@@ -50,6 +50,14 @@ packages:
       url: "https://github.com/cake-tech/bech32.git"
     source: git
     version: "0.2.2"
+  bip39:
+    dependency: "direct main"
+    description:
+      name: bip39
+      sha256: de1ee27ebe7d96b84bb3a04a4132a0a3007dcdd5ad27dd14aa87a29d97c45edc
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.6"
   blockchain_utils:
     dependency: transitive
     description:
@@ -298,6 +306,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.2"
+  hex:
+    dependency: transitive
+    description:
+      name: hex
+      sha256: "4e7cd54e4b59ba026432a6be2dd9d96e4c5205725194997193bf871703b82c4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.0"
   hive:
     dependency: "direct dev"
     description:
@@ -454,8 +470,8 @@ packages:
     dependency: "direct main"
     description:
       path: "impls/monero.dart"
-      ref: "3bfb3856a838f2bf6b729501837bb0295dedf25d"
-      resolved-ref: "3bfb3856a838f2bf6b729501837bb0295dedf25d"
+      ref: "4f23e050f7dec0bbbbe27c36c8e511bb3f52868a"
+      resolved-ref: "4f23e050f7dec0bbbbe27c36c8e511bb3f52868a"
       url: "https://github.com/mrcyjanek/monero_c.git"
     source: git
     version: "0.0.0"