mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2025-05-16 22:04:38 +00:00
1775 lines
58 KiB
Dart
1775 lines
58 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'package:convert/convert.dart' as convert;
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import 'dart:math';
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import 'package:collection/collection.dart';
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import 'package:crypto/crypto.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_credentials.dart';
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import 'package:cw_bitcoin/exceptions.dart';
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import 'package:cw_bitcoin/litecoin_wallet_snapshot.dart';
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import 'package:cw_core/cake_hive.dart';
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import 'package:cw_core/mweb_utxo.dart';
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import 'package:cw_core/unspent_coin_type.dart';
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import 'package:cw_core/utils/print_verbose.dart';
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import 'package:cw_core/node.dart';
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import 'package:cw_mweb/mwebd.pbgrpc.dart';
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import 'package:fixnum/fixnum.dart';
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import 'package:bitcoin_base/bitcoin_base.dart';
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import 'package:blockchain_utils/blockchain_utils.dart';
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import 'package:blockchain_utils/signer/ecdsa_signing_key.dart';
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import 'package:cw_bitcoin/bitcoin_address_record.dart';
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import 'package:cw_bitcoin/bitcoin_unspent.dart';
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import 'package:cw_bitcoin/electrum_transaction_info.dart';
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import 'package:cw_bitcoin/pending_bitcoin_transaction.dart';
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import 'package:cw_core/encryption_file_utils.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cw_core/pending_transaction.dart';
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import 'package:cw_core/sync_status.dart';
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import 'package:cw_core/transaction_direction.dart';
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import 'package:cw_core/unspent_coins_info.dart';
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import 'package:cw_bitcoin/electrum_balance.dart';
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import 'package:cw_bitcoin/electrum_wallet.dart';
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import 'package:cw_bitcoin/litecoin_wallet_addresses.dart';
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import 'package:cw_core/wallet_info.dart';
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import 'package:cw_core/wallet_keys_file.dart';
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import 'package:flutter/foundation.dart';
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import 'package:grpc/grpc.dart';
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import 'package:hive/hive.dart';
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import 'package:ledger_flutter_plus/ledger_flutter_plus.dart';
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import 'package:ledger_litecoin/ledger_litecoin.dart';
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import 'package:mobx/mobx.dart';
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import 'package:cw_core/wallet_type.dart';
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import 'package:cw_mweb/cw_mweb.dart';
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import 'package:bitcoin_base/src/crypto/keypair/sign_utils.dart';
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import 'package:pointycastle/ecc/api.dart';
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import 'package:pointycastle/ecc/curves/secp256k1.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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part 'litecoin_wallet.g.dart';
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class LitecoinWallet = LitecoinWalletBase with _$LitecoinWallet;
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abstract class LitecoinWalletBase extends ElectrumWallet with Store {
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LitecoinWalletBase({
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required super.password,
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required super.walletInfo,
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required super.unspentCoinsInfo,
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required super.encryptionFileUtils,
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required super.hdWallets,
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super.mnemonic,
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super.xpub,
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String? passphrase,
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super.initialBalance,
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int? initialMwebHeight,
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super.alwaysScan,
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super.didInitialSync,
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Map<String, dynamic>? walletAddressesSnapshot,
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}) : super(
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network: LitecoinNetwork.mainnet,
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currency: CryptoCurrency.ltc,
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) {
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mwebEnabled = alwaysScan ?? false;
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if (walletAddressesSnapshot != null) {
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walletAddresses = LitecoinWalletAddressesBase.fromJson(
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walletAddressesSnapshot,
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walletInfo,
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network: network,
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isHardwareWallet: isHardwareWallet,
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hdWallets: hdWallets,
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);
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} else {
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walletAddresses = LitecoinWalletAddresses(
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walletInfo,
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network: network,
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mwebEnabled: mwebEnabled,
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isHardwareWallet: walletInfo.isHardwareWallet,
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hdWallets: hdWallets,
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);
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}
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autorun((_) {
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this.walletAddresses.isEnabledAutoGenerateSubaddress = this.isEnabledAutoGenerateSubaddress;
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});
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reaction((_) => mwebSyncStatus, (status) async {
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if (mwebSyncStatus is FailedSyncStatus) {
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// we failed to connect to mweb, check if we are connected to the litecoin node: await CwMweb.stop();
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await Future.delayed(const Duration(seconds: 5));
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if ((currentChainTip ?? 0) == 0) {
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// we aren't connected to the litecoin node, so the current electrum_wallet reactions will take care of this case for us
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} else {
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// we're connected to the litecoin node, but we failed to connect to mweb, try again after a few seconds:
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await CwMweb.stop();
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await Future.delayed(const Duration(seconds: 5));
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startSync();
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}
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} else if (mwebSyncStatus is SyncingSyncStatus) {
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syncStatus = mwebSyncStatus;
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} else if (mwebSyncStatus is SynchronizingSyncStatus) {
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if (syncStatus is! SynchronizingSyncStatus) {
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syncStatus = mwebSyncStatus;
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}
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} else if (mwebSyncStatus is SyncedSyncStatus) {
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if (syncStatus is! SyncedSyncStatus) {
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syncStatus = mwebSyncStatus;
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}
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}
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});
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}
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@override
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LitecoinNetwork get network => LitecoinNetwork.mainnet;
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Bip32Slip10Secp256k1? get mwebHd => (walletAddresses as LitecoinWalletAddresses).mwebHd;
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late final Box<MwebUtxo> mwebUtxosBox;
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Timer? _syncTimer;
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Timer? _feeRatesTimer;
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Timer? _processingTimer;
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StreamSubscription<Utxo>? _utxoStream;
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late bool mwebEnabled;
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bool processingUtxos = false;
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@observable
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SyncStatus mwebSyncStatus = NotConnectedSyncStatus();
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List<int> get scanSecret => mwebHd!.childKey(Bip32KeyIndex(0x80000000)).privateKey.privKey.raw;
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List<int> get spendSecret => mwebHd!.childKey(Bip32KeyIndex(0x80000001)).privateKey.privKey.raw;
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static Future<LitecoinWallet> create({
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required String mnemonic,
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required String password,
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required WalletInfo walletInfo,
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required Box<UnspentCoinsInfo> unspentCoinsInfo,
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required EncryptionFileUtils encryptionFileUtils,
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String? passphrase,
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List<BitcoinAddressRecord>? initialAddresses,
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List<LitecoinMWEBAddressRecord>? initialMwebAddresses,
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ElectrumBalance? initialBalance,
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Map<String, int>? initialRegularAddressIndex,
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Map<String, int>? initialChangeAddressIndex,
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}) async {
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final hdWallets = await ElectrumWalletBase.getAccountHDWallets(
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walletInfo: walletInfo,
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network: LitecoinNetwork.mainnet,
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mnemonic: mnemonic,
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passphrase: passphrase,
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);
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return LitecoinWallet(
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mnemonic: mnemonic,
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password: password,
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walletInfo: walletInfo,
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unspentCoinsInfo: unspentCoinsInfo,
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initialBalance: initialBalance,
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encryptionFileUtils: encryptionFileUtils,
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passphrase: passphrase,
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hdWallets: hdWallets,
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);
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}
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static Future<LitecoinWallet> open({
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required String name,
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required WalletInfo walletInfo,
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required Box<UnspentCoinsInfo> unspentCoinsInfo,
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required String password,
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required bool alwaysScan,
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required EncryptionFileUtils encryptionFileUtils,
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}) async {
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final hasKeysFile = await WalletKeysFile.hasKeysFile(name, walletInfo.type);
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LitecoinWalletSnapshot? snp = null;
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try {
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snp = await LitecoinWalletSnapshot.load(
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encryptionFileUtils,
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name,
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walletInfo,
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password,
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LitecoinNetwork.mainnet,
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);
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} catch (e) {
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if (!hasKeysFile) rethrow;
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}
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final WalletKeysData keysData;
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// Migrate wallet from the old scheme to then new .keys file scheme
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if (!hasKeysFile) {
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keysData =
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WalletKeysData(mnemonic: snp!.mnemonic, xPub: snp.xpub, passphrase: snp.passphrase);
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} else {
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keysData = await WalletKeysFile.readKeysFile(
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name,
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walletInfo.type,
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password,
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encryptionFileUtils,
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);
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}
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walletInfo.derivationInfo ??= DerivationInfo();
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// set the default if not present:
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walletInfo.derivationInfo!.derivationPath ??= snp?.derivationPath ?? ELECTRUM_PATH;
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walletInfo.derivationInfo!.derivationType ??= snp?.derivationType ?? DerivationType.electrum;
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final hdWallets = await ElectrumWalletBase.getAccountHDWallets(
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walletInfo: walletInfo,
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network: LitecoinNetwork.mainnet,
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mnemonic: keysData.mnemonic,
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passphrase: keysData.passphrase,
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xpub: keysData.xPub,
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);
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return LitecoinWallet(
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mnemonic: keysData.mnemonic,
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xpub: keysData.xPub,
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password: password,
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walletInfo: walletInfo,
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unspentCoinsInfo: unspentCoinsInfo,
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initialBalance: snp?.balance,
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passphrase: keysData.passphrase,
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encryptionFileUtils: encryptionFileUtils,
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alwaysScan: snp?.alwaysScan,
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didInitialSync: snp?.didInitialSync,
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hdWallets: hdWallets,
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);
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}
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Future<void> waitForMwebAddresses() async {
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printV("waitForMwebAddresses() called!");
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// ensure that we have the full 1000 mweb addresses generated before continuing:
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// should no longer be needed, but leaving here just in case
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await (walletAddresses as LitecoinWalletAddresses).ensureMwebAddressUpToIndexExists(1020);
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}
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@action
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@override
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Future<void> connectToNode({required Node node}) async {
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await super.connectToNode(node: node);
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final prefs = await SharedPreferences.getInstance();
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final mwebNodeUri = prefs.getString("mwebNodeUri") ?? "ltc-electrum.cakewallet.com:9333";
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await CwMweb.setNodeUriOverride(mwebNodeUri);
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}
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@action
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@override
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Future<void> startSync() async {
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printV("startSync() called!");
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printV("STARTING SYNC - MWEB ENABLED: $mwebEnabled");
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if (!mwebEnabled) {
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try {
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// in case we're switching from a litecoin wallet that had mweb enabled
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CwMweb.stop();
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} catch (_) {}
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super.startSync();
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return;
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}
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if (mwebSyncStatus is SynchronizingSyncStatus) {
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return;
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}
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printV("STARTING SYNC - MWEB ENABLED: $mwebEnabled");
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_syncTimer?.cancel();
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try {
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mwebSyncStatus = SynchronizingSyncStatus();
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try {
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await subscribeForStatuses();
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} catch (e) {
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printV("failed to subcribe for updates: $e");
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}
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updateFeeRates();
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_feeRatesTimer?.cancel();
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_feeRatesTimer =
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Timer.periodic(const Duration(minutes: 1), (timer) async => await updateFeeRates());
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printV("START SYNC FUNCS");
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await waitForMwebAddresses();
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await processMwebUtxos();
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await updateTransactions();
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await updateUnspent();
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await updateBalance();
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} catch (e) {
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printV("failed to start mweb sync: $e");
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syncStatus = FailedSyncStatus();
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return;
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}
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_syncTimer?.cancel();
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_syncTimer = Timer.periodic(const Duration(milliseconds: 3000), (timer) async {
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if (mwebSyncStatus is FailedSyncStatus) {
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_syncTimer?.cancel();
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return;
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}
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final nodeHeight = await currentChainTip ?? 0;
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if (nodeHeight == 0) {
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// we aren't connected to the ltc node yet
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if (mwebSyncStatus is! NotConnectedSyncStatus) {
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mwebSyncStatus = FailedSyncStatus(error: "litecoin node isn't connected");
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}
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return;
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}
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// update the current chain tip so that confirmation calculations are accurate:
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currentChainTip = nodeHeight;
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final resp = await CwMweb.status(StatusRequest());
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try {
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if (resp.blockHeaderHeight < nodeHeight) {
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int h = resp.blockHeaderHeight;
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mwebSyncStatus = SyncingSyncStatus(nodeHeight - h, h / nodeHeight);
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} else if (resp.mwebHeaderHeight < nodeHeight) {
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int h = resp.mwebHeaderHeight;
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mwebSyncStatus = SyncingSyncStatus(nodeHeight - h, h / nodeHeight);
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} else if (resp.mwebUtxosHeight < nodeHeight) {
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mwebSyncStatus = SyncingSyncStatus(1, 0.999);
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} else {
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bool confirmationsUpdated = false;
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if (resp.mwebUtxosHeight > walletInfo.restoreHeight) {
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await walletInfo.updateRestoreHeight(resp.mwebUtxosHeight);
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await checkMwebUtxosSpent();
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// update the confirmations for each transaction:
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for (final tx in transactionHistory.transactions.values) {
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if (tx.height == null || tx.height == 0) {
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// update with first confirmation on next block since it hasn't been confirmed yet:
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tx.height = resp.mwebUtxosHeight;
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continue;
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}
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final confirmations = (resp.mwebUtxosHeight - tx.height!) + 1;
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// if the confirmations haven't changed, skip updating:
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if (tx.confirmations == confirmations) continue;
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// if an outgoing tx is now confirmed, delete the utxo from the box (delete the unspent coin):
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if (confirmations >= 2 && tx.direction == TransactionDirection.outgoing) {
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for (var coin in unspentCoins) {
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if (tx.inputAddresses?.contains(coin.address) ?? false) {
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final utxo = mwebUtxosBox.get(coin.address);
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if (utxo != null) {
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printV("deleting utxo ${coin.address} @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
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await mwebUtxosBox.delete(coin.address);
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}
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}
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}
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}
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tx.confirmations = confirmations;
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tx.isPending = false;
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transactionHistory.addOne(tx);
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confirmationsUpdated = true;
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}
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if (confirmationsUpdated) {
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await transactionHistory.save();
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await updateTransactions();
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}
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}
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// prevent unnecessary reaction triggers:
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if (mwebSyncStatus is! SyncedSyncStatus) {
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// mwebd is synced, but we could still be processing incoming utxos:
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if (!processingUtxos) {
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mwebSyncStatus = SyncedSyncStatus();
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}
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}
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return;
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}
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} catch (e) {
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printV("error syncing: $e");
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mwebSyncStatus = FailedSyncStatus(error: e.toString());
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}
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});
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}
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@action
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@override
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Future<void> stopSync() async {
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printV("stopSync() called!");
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_syncTimer?.cancel();
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_utxoStream?.cancel();
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_feeRatesTimer?.cancel();
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await CwMweb.stop();
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printV("stopped syncing!");
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}
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Future<void> initMwebUtxosBox() async {
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final boxName = "${walletInfo.name.replaceAll(" ", "_")}_${MwebUtxo.boxName}";
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mwebUtxosBox = await CakeHive.openBox<MwebUtxo>(boxName);
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}
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@override
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Future<void> renameWalletFiles(String newWalletName) async {
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// rename the hive box:
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final oldBoxName = "${walletInfo.name.replaceAll(" ", "_")}_${MwebUtxo.boxName}";
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final newBoxName = "${newWalletName.replaceAll(" ", "_")}_${MwebUtxo.boxName}";
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final oldBox = await CakeHive.openBox<MwebUtxo>(oldBoxName);
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mwebUtxosBox = await CakeHive.openBox<MwebUtxo>(newBoxName);
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for (final key in oldBox.keys) {
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await mwebUtxosBox.put(key, oldBox.get(key)!);
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}
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oldBox.deleteFromDisk();
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await super.renameWalletFiles(newWalletName);
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}
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@action
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@override
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Future<void> rescan({required int height}) async {
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_syncTimer?.cancel();
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await walletInfo.updateRestoreHeight(height);
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// go through mwebUtxos and clear any that are above the new restore height:
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if (height == 0) {
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await mwebUtxosBox.clear();
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transactionHistory.clear();
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} else {
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for (final utxo in mwebUtxosBox.values) {
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if (utxo.height > height) {
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await mwebUtxosBox.delete(utxo.outputId);
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}
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}
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// TODO: remove transactions that are above the new restore height!
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}
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// reset coin balances and txCount to 0:
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unspentCoins.forEach((coin) {
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coin.bitcoinAddressRecord.balance = 0;
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coin.bitcoinAddressRecord.txCount = 0;
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});
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for (var addressRecord in walletAddresses.allAddresses) {
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addressRecord.balance = 0;
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addressRecord.txCount = 0;
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}
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await startSync();
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}
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@override
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Future<void> init() async {
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await super.init();
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await initMwebUtxosBox();
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}
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Future<void> handleIncoming(MwebUtxo utxo) async {
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printV("handleIncoming() called!");
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final status = await CwMweb.status(StatusRequest());
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var date = DateTime.now();
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var confirmations = 0;
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if (utxo.height > 0) {
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date = DateTime.fromMillisecondsSinceEpoch(utxo.blockTime * 1000);
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confirmations = status.blockHeaderHeight - utxo.height + 1;
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}
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var tx = transactionHistory.transactions.values
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.firstWhereOrNull((tx) => tx.outputAddresses?.contains(utxo.outputId) ?? false);
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if (tx == null) {
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tx = ElectrumTransactionInfo(
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WalletType.litecoin,
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id: utxo.outputId,
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height: utxo.height,
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amount: utxo.value.toInt(),
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fee: 0,
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direction: TransactionDirection.incoming,
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isPending: utxo.height == 0,
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date: date,
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confirmations: confirmations,
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inputAddresses: [],
|
|
outputAddresses: [utxo.outputId],
|
|
isReplaced: false,
|
|
);
|
|
} else {
|
|
if (tx.confirmations != confirmations || tx.height != utxo.height) {
|
|
tx.height = utxo.height;
|
|
tx.confirmations = confirmations;
|
|
tx.isPending = utxo.height == 0;
|
|
}
|
|
}
|
|
|
|
bool isNew = transactionHistory.transactions[tx.id] == null;
|
|
|
|
if (!(tx.outputAddresses?.contains(utxo.address) ?? false)) {
|
|
tx.outputAddresses?.add(utxo.address);
|
|
isNew = true;
|
|
}
|
|
|
|
if (isNew) {
|
|
final addressRecord = walletAddresses.allAddresses
|
|
.firstWhereOrNull((addressRecord) => addressRecord.address == utxo.address);
|
|
if (addressRecord == null) {
|
|
printV("we don't have this address in the wallet! ${utxo.address}");
|
|
return;
|
|
}
|
|
|
|
// update the txCount:
|
|
addressRecord.txCount++;
|
|
addressRecord.balance += utxo.value.toInt();
|
|
addressRecord.setAsUsed();
|
|
}
|
|
|
|
transactionHistory.addOne(tx);
|
|
|
|
if (isNew) {
|
|
// update the unconfirmed balance when a new tx is added:
|
|
// we do this after adding the tx to the history so that sub address balances are updated correctly
|
|
// (since that calculation is based on the tx history)
|
|
await updateBalance();
|
|
}
|
|
}
|
|
|
|
Future<void> processMwebUtxos() async {
|
|
printV("processMwebUtxos() called!");
|
|
if (!mwebEnabled) {
|
|
return;
|
|
}
|
|
|
|
int restoreHeight = walletInfo.restoreHeight;
|
|
printV("SCANNING FROM HEIGHT: $restoreHeight");
|
|
final req = UtxosRequest(scanSecret: scanSecret, fromHeight: restoreHeight);
|
|
|
|
// process new utxos as they come in:
|
|
await _utxoStream?.cancel();
|
|
ResponseStream<Utxo>? responseStream = await CwMweb.utxos(req);
|
|
if (responseStream == null) {
|
|
throw Exception("failed to get utxos stream!");
|
|
}
|
|
_utxoStream = responseStream.listen(
|
|
(Utxo sUtxo) async {
|
|
// we're processing utxos, so our balance could still be innacurate:
|
|
if (mwebSyncStatus is! SynchronizingSyncStatus && mwebSyncStatus is! SyncingSyncStatus) {
|
|
mwebSyncStatus = SynchronizingSyncStatus();
|
|
processingUtxos = true;
|
|
_processingTimer?.cancel();
|
|
_processingTimer = Timer.periodic(const Duration(seconds: 2), (timer) async {
|
|
processingUtxos = false;
|
|
timer.cancel();
|
|
});
|
|
}
|
|
|
|
final utxo = MwebUtxo(
|
|
address: sUtxo.address,
|
|
blockTime: sUtxo.blockTime,
|
|
height: sUtxo.height,
|
|
outputId: sUtxo.outputId,
|
|
value: sUtxo.value.toInt(),
|
|
);
|
|
|
|
if (mwebUtxosBox.containsKey(utxo.outputId)) {
|
|
// we've already stored this utxo, skip it:
|
|
// but do update the utxo height if it's somehow different:
|
|
final existingUtxo = mwebUtxosBox.get(utxo.outputId);
|
|
if (existingUtxo!.height != utxo.height) {
|
|
printV(
|
|
"updating utxo height for $utxo.outputId: ${existingUtxo.height} -> ${utxo.height}");
|
|
existingUtxo.height = utxo.height;
|
|
await mwebUtxosBox.put(utxo.outputId, existingUtxo);
|
|
}
|
|
return;
|
|
}
|
|
|
|
await updateUnspent();
|
|
await updateBalance();
|
|
|
|
final mwebAddrs = (walletAddresses as LitecoinWalletAddresses).mwebAddrs;
|
|
|
|
// don't process utxos with addresses that are not in the mwebAddrs list:
|
|
if (utxo.address.isNotEmpty && !mwebAddrs.contains(utxo.address)) {
|
|
return;
|
|
}
|
|
|
|
await mwebUtxosBox.put(utxo.outputId, utxo);
|
|
|
|
await handleIncoming(utxo);
|
|
},
|
|
onError: (error) {
|
|
printV("error in utxo stream: $error");
|
|
mwebSyncStatus = FailedSyncStatus(error: error.toString());
|
|
},
|
|
cancelOnError: true,
|
|
);
|
|
}
|
|
|
|
Future<void> deleteSpentUtxos() async {
|
|
printV("deleteSpentUtxos() called!");
|
|
final chainHeight = currentChainTip;
|
|
final status = await CwMweb.status(StatusRequest());
|
|
if (chainHeight == null || status.blockHeaderHeight != chainHeight) return;
|
|
if (status.mwebUtxosHeight != chainHeight) return; // we aren't synced
|
|
|
|
// delete any spent utxos with >= 2 confirmations:
|
|
final spentOutputIds = mwebUtxosBox.values
|
|
.where((utxo) => utxo.spent && (chainHeight - utxo.height) >= 2)
|
|
.map((utxo) => utxo.outputId)
|
|
.toList();
|
|
|
|
if (spentOutputIds.isEmpty) return;
|
|
|
|
final resp = await CwMweb.spent(SpentRequest(outputId: spentOutputIds));
|
|
final spent = resp.outputId;
|
|
if (spent.isEmpty) return;
|
|
|
|
for (final outputId in spent) {
|
|
await mwebUtxosBox.delete(outputId);
|
|
}
|
|
}
|
|
|
|
Future<void> checkMwebUtxosSpent() async {
|
|
printV("checkMwebUtxosSpent() called!");
|
|
if (!mwebEnabled) {
|
|
return;
|
|
}
|
|
|
|
final pendingOutgoingTransactions = transactionHistory.transactions.values
|
|
.where((tx) => tx.direction == TransactionDirection.outgoing && tx.isPending);
|
|
|
|
// check if any of the pending outgoing transactions are now confirmed:
|
|
bool updatedAny = false;
|
|
for (final tx in pendingOutgoingTransactions) {
|
|
updatedAny = await isConfirmed(tx) || updatedAny;
|
|
}
|
|
|
|
await deleteSpentUtxos();
|
|
|
|
// get output ids of all the mweb utxos that have > 0 height:
|
|
final outputIds = mwebUtxosBox.values
|
|
.where((utxo) => utxo.height > 0 && !utxo.spent)
|
|
.map((utxo) => utxo.outputId)
|
|
.toList();
|
|
|
|
final resp = await CwMweb.spent(SpentRequest(outputId: outputIds));
|
|
final spent = resp.outputId;
|
|
if (spent.isEmpty) return;
|
|
|
|
final status = await CwMweb.status(StatusRequest());
|
|
final height = await currentChainTip;
|
|
if (height == null || status.blockHeaderHeight != height) return;
|
|
if (status.mwebUtxosHeight != height) return; // we aren't synced
|
|
int amount = 0;
|
|
Set<String> inputAddresses = {};
|
|
var output = convert.AccumulatorSink<Digest>();
|
|
var input = sha256.startChunkedConversion(output);
|
|
|
|
for (final outputId in spent) {
|
|
final utxo = mwebUtxosBox.get(outputId);
|
|
await mwebUtxosBox.delete(outputId);
|
|
if (utxo == null) continue;
|
|
final addressRecord = walletAddresses.allAddresses
|
|
.firstWhere((addressRecord) => addressRecord.address == utxo.address);
|
|
if (!inputAddresses.contains(utxo.address)) {
|
|
addressRecord.txCount++;
|
|
}
|
|
addressRecord.balance -= utxo.value.toInt();
|
|
amount += utxo.value.toInt();
|
|
inputAddresses.add(utxo.address);
|
|
input.add(hex.decode(outputId));
|
|
}
|
|
|
|
if (inputAddresses.isEmpty) return;
|
|
input.close();
|
|
var digest = output.events.single;
|
|
final tx = ElectrumTransactionInfo(
|
|
WalletType.litecoin,
|
|
id: digest.toString(),
|
|
height: height,
|
|
amount: amount,
|
|
fee: 0,
|
|
direction: TransactionDirection.outgoing,
|
|
isPending: false,
|
|
date: DateTime.fromMillisecondsSinceEpoch(status.blockTime * 1000),
|
|
confirmations: 1,
|
|
inputAddresses: inputAddresses.toList(),
|
|
outputAddresses: [],
|
|
isReplaced: false,
|
|
);
|
|
|
|
transactionHistory.addOne(tx);
|
|
await transactionHistory.save();
|
|
|
|
if (updatedAny) {
|
|
await updateBalance();
|
|
}
|
|
}
|
|
|
|
// checks if a pending transaction is now confirmed, and updates the tx info accordingly:
|
|
Future<bool> isConfirmed(ElectrumTransactionInfo tx) async {
|
|
if (!mwebEnabled) return false;
|
|
if (!tx.isPending) return false;
|
|
|
|
final isMwebTx = (tx.inputAddresses?.any((addr) => addr.contains("mweb")) ?? false) ||
|
|
(tx.outputAddresses?.any((addr) => addr.contains("mweb")) ?? false);
|
|
|
|
if (!isMwebTx) {
|
|
return false;
|
|
}
|
|
|
|
final outputId = <String>[], target = <String>{};
|
|
final isHash = RegExp(r'^[a-f0-9]{64}$').hasMatch;
|
|
final spendingOutputIds = tx.inputAddresses?.where(isHash) ?? [];
|
|
final payingToOutputIds = tx.outputAddresses?.where(isHash) ?? [];
|
|
outputId.addAll(spendingOutputIds);
|
|
outputId.addAll(payingToOutputIds);
|
|
target.addAll(spendingOutputIds);
|
|
|
|
for (final outputId in payingToOutputIds) {
|
|
final spendingTx = transactionHistory.transactions.values
|
|
.firstWhereOrNull((tx) => tx.inputAddresses?.contains(outputId) ?? false);
|
|
if (spendingTx != null && !spendingTx.isPending) {
|
|
target.add(outputId);
|
|
}
|
|
}
|
|
|
|
if (outputId.isEmpty) {
|
|
return false;
|
|
}
|
|
|
|
final resp = await CwMweb.spent(SpentRequest(outputId: outputId));
|
|
if (!setEquals(resp.outputId.toSet(), target)) {
|
|
return false;
|
|
}
|
|
|
|
final status = await CwMweb.status(StatusRequest());
|
|
tx.height = status.mwebUtxosHeight;
|
|
tx.confirmations = 1;
|
|
tx.isPending = false;
|
|
await transactionHistory.save();
|
|
return true;
|
|
}
|
|
|
|
Future<void> updateUnspent() async {
|
|
printV("updateUnspent() called!");
|
|
await checkMwebUtxosSpent();
|
|
await updateAllUnspents();
|
|
}
|
|
|
|
@override
|
|
@action
|
|
Future<void> updateAllUnspents() async {
|
|
if (!mwebEnabled) {
|
|
await super.updateAllUnspents();
|
|
return;
|
|
}
|
|
|
|
// add the mweb unspents to the list:
|
|
List<BitcoinUnspent> mwebUnspentCoins = [];
|
|
// update mweb unspents:
|
|
final mwebAddrs = (walletAddresses as LitecoinWalletAddresses).mwebAddrs;
|
|
mwebUtxosBox.keys.forEach((dynamic oId) {
|
|
final String outputId = oId as String;
|
|
final utxo = mwebUtxosBox.get(outputId);
|
|
if (utxo == null || utxo.spent) {
|
|
return;
|
|
}
|
|
if (utxo.address.isEmpty) {
|
|
// not sure if a bug or a special case but we definitely ignore these
|
|
return;
|
|
}
|
|
final addressRecord = walletAddresses.allAddresses
|
|
.firstWhereOrNull((addressRecord) => addressRecord.address == utxo.address);
|
|
|
|
if (addressRecord == null) {
|
|
printV("utxo contains an address that is not in the wallet: ${utxo.address}");
|
|
return;
|
|
}
|
|
final unspent = BitcoinUnspent(
|
|
addressRecord,
|
|
outputId,
|
|
utxo.value.toInt(),
|
|
mwebAddrs.indexOf(utxo.address),
|
|
);
|
|
if (unspent.vout == 0) {
|
|
unspent.isChange = true;
|
|
}
|
|
mwebUnspentCoins.add(unspent);
|
|
});
|
|
|
|
// copy coin control attributes to mwebCoins:
|
|
// await updateCoins(mwebUnspentCoins);
|
|
// get regular ltc unspents (this resets unspentCoins):
|
|
await super.updateAllUnspents();
|
|
// add the mwebCoins:
|
|
unspentCoins.addAll(mwebUnspentCoins);
|
|
}
|
|
|
|
// @override
|
|
Future<void> updateBalance([Set<String>? scripthashes, bool? wait]) async {
|
|
await super.updateBalance(scripthashes, true);
|
|
final balance = this.balance[currency]!;
|
|
|
|
if (!mwebEnabled) {
|
|
return;
|
|
}
|
|
|
|
// update unspent balances:
|
|
await updateUnspent();
|
|
|
|
int confirmed = balance.confirmed;
|
|
int unconfirmed = balance.unconfirmed;
|
|
int confirmedMweb = 0;
|
|
int unconfirmedMweb = 0;
|
|
try {
|
|
mwebUtxosBox.values.forEach((utxo) {
|
|
if (utxo.height > 0) {
|
|
confirmedMweb += utxo.value.toInt();
|
|
} else {
|
|
unconfirmedMweb += utxo.value.toInt();
|
|
}
|
|
});
|
|
if (unconfirmedMweb > 0) {
|
|
unconfirmedMweb = -1 * (confirmedMweb - unconfirmedMweb);
|
|
}
|
|
} catch (_) {}
|
|
|
|
for (var addressRecord in walletAddresses.allAddresses) {
|
|
addressRecord.balance = 0;
|
|
addressRecord.txCount = 0;
|
|
}
|
|
|
|
unspentCoins.forEach((coin) {
|
|
final coinInfoList = unspentCoinsInfo.values.where(
|
|
(element) =>
|
|
element.walletId.contains(id) &&
|
|
element.hash.contains(coin.hash) &&
|
|
element.vout == coin.vout,
|
|
);
|
|
|
|
if (coinInfoList.isNotEmpty) {
|
|
final coinInfo = coinInfoList.first;
|
|
|
|
coin.isFrozen = coinInfo.isFrozen;
|
|
coin.isSending = coinInfo.isSending;
|
|
coin.note = coinInfo.note;
|
|
coin.bitcoinAddressRecord.balance += coinInfo.value;
|
|
} else {
|
|
super.addCoinInfo(coin);
|
|
}
|
|
});
|
|
|
|
// update the txCount for each address using the tx history, since we can't rely on mwebd
|
|
// to have an accurate count, we should just keep it in sync with what we know from the tx history:
|
|
for (final tx in transactionHistory.transactions.values) {
|
|
// if (tx.isPending) continue;
|
|
if (tx.inputAddresses == null || tx.outputAddresses == null) {
|
|
continue;
|
|
}
|
|
final txAddresses = tx.inputAddresses! + tx.outputAddresses!;
|
|
for (final address in txAddresses) {
|
|
final addressRecord = walletAddresses.allAddresses
|
|
.firstWhereOrNull((addressRecord) => addressRecord.address == address);
|
|
if (addressRecord == null) {
|
|
continue;
|
|
}
|
|
addressRecord.txCount++;
|
|
}
|
|
}
|
|
|
|
this.balance[currency] = ElectrumBalance(
|
|
confirmed: confirmed,
|
|
unconfirmed: unconfirmed,
|
|
frozen: balance.frozen,
|
|
secondConfirmed: confirmedMweb,
|
|
secondUnconfirmed: unconfirmedMweb,
|
|
);
|
|
}
|
|
|
|
@override
|
|
ElectrumTxCreateUtxoDetails createUTXOS({
|
|
required bool sendAll,
|
|
int credentialsAmount = 0,
|
|
int? inputsCount,
|
|
UnspentCoinType coinTypeToSpendFrom = UnspentCoinType.any,
|
|
}) {
|
|
List<UtxoWithAddress> utxos = [];
|
|
List<Outpoint> vinOutpoints = [];
|
|
List<ECPrivateInfo> inputPrivKeyInfos = [];
|
|
final publicKeys = <String, PublicKeyWithDerivationPath>{};
|
|
int allInputsAmount = 0;
|
|
bool spendsUnconfirmedTX = false;
|
|
|
|
int leftAmount = credentialsAmount;
|
|
var availableInputs = unspentCoins.where((utx) {
|
|
if (!utx.isSending || utx.isFrozen) {
|
|
return false;
|
|
}
|
|
|
|
switch (coinTypeToSpendFrom) {
|
|
case UnspentCoinType.mweb:
|
|
return utx.bitcoinAddressRecord.type == SegwitAddressType.mweb;
|
|
case UnspentCoinType.nonMweb:
|
|
return utx.bitcoinAddressRecord.type != SegwitAddressType.mweb;
|
|
case UnspentCoinType.any:
|
|
return true;
|
|
}
|
|
}).toList();
|
|
final unconfirmedCoins = availableInputs.where((utx) => utx.confirmations == 0).toList();
|
|
|
|
// sort the unconfirmed coins so that mweb coins are first:
|
|
availableInputs.sort((a, b) => a.bitcoinAddressRecord.type == SegwitAddressType.mweb ? -1 : 1);
|
|
|
|
for (int i = 0; i < availableInputs.length; i++) {
|
|
final utx = availableInputs[i];
|
|
if (!spendsUnconfirmedTX) spendsUnconfirmedTX = utx.confirmations == 0;
|
|
|
|
allInputsAmount += utx.value;
|
|
leftAmount = leftAmount - utx.value;
|
|
|
|
final address = RegexUtils.addressTypeFromStr(utx.address, network);
|
|
ECPrivate? privkey;
|
|
|
|
if (!isHardwareWallet) {
|
|
final addressRecord = (utx.bitcoinAddressRecord as BitcoinAddressRecord);
|
|
final path = addressRecord.derivationInfo.derivationPath
|
|
.addElem(Bip32KeyIndex(
|
|
BitcoinAddressUtils.getAccountFromChange(addressRecord.isChange),
|
|
))
|
|
.addElem(Bip32KeyIndex(addressRecord.index));
|
|
|
|
privkey = ECPrivate.fromBip32(bip32: hdWallet.derive(path));
|
|
}
|
|
|
|
vinOutpoints.add(Outpoint(txid: utx.hash, index: utx.vout));
|
|
String pubKeyHex;
|
|
|
|
if (privkey != null) {
|
|
inputPrivKeyInfos.add(ECPrivateInfo(privkey, address.type == SegwitAddressType.p2tr));
|
|
|
|
pubKeyHex = privkey.getPublic().toHex();
|
|
} else {
|
|
pubKeyHex = walletAddresses.hdWallet
|
|
.childKey(Bip32KeyIndex(utx.bitcoinAddressRecord.index))
|
|
.publicKey
|
|
.toHex();
|
|
}
|
|
|
|
if (utx.bitcoinAddressRecord is BitcoinAddressRecord) {
|
|
final derivationPath = (utx.bitcoinAddressRecord as BitcoinAddressRecord)
|
|
.derivationInfo
|
|
.derivationPath
|
|
.toString();
|
|
publicKeys[address.pubKeyHash()] = PublicKeyWithDerivationPath(pubKeyHex, derivationPath);
|
|
}
|
|
|
|
utxos.add(
|
|
UtxoWithAddress(
|
|
utxo: BitcoinUtxo(
|
|
txHash: utx.hash,
|
|
value: BigInt.from(utx.value),
|
|
vout: utx.vout,
|
|
scriptType: BitcoinAddressUtils.getScriptType(address),
|
|
),
|
|
ownerDetails: UtxoAddressDetails(
|
|
publicKey: pubKeyHex,
|
|
address: address,
|
|
),
|
|
),
|
|
);
|
|
|
|
// sendAll continues for all inputs
|
|
if (!sendAll) {
|
|
bool amountIsAcquired = leftAmount <= 0;
|
|
if ((inputsCount == null && amountIsAcquired) || inputsCount == i + 1) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (utxos.isEmpty) {
|
|
throw BitcoinTransactionNoInputsException();
|
|
}
|
|
|
|
return ElectrumTxCreateUtxoDetails(
|
|
availableInputs: availableInputs,
|
|
unconfirmedCoins: unconfirmedCoins,
|
|
utxos: utxos,
|
|
vinOutpoints: vinOutpoints,
|
|
inputPrivKeyInfos: inputPrivKeyInfos,
|
|
publicKeys: publicKeys,
|
|
allInputsAmount: allInputsAmount,
|
|
spendsUnconfirmedTX: spendsUnconfirmedTX,
|
|
);
|
|
}
|
|
|
|
Future<ElectrumEstimatedTx> estimateSendAllTxMweb(
|
|
List<BitcoinOutput> outputs,
|
|
int feeRate, {
|
|
String? memo,
|
|
UnspentCoinType coinTypeToSpendFrom = UnspentCoinType.any,
|
|
}) async {
|
|
final utxoDetails = createUTXOS(sendAll: true, coinTypeToSpendFrom: coinTypeToSpendFrom);
|
|
|
|
int fee = await calcFeeMweb(
|
|
utxos: utxoDetails.utxos,
|
|
outputs: outputs,
|
|
memo: memo,
|
|
feeRate: feeRate,
|
|
);
|
|
|
|
if (fee == 0) {
|
|
throw BitcoinTransactionNoFeeException();
|
|
}
|
|
|
|
// Here, when sending all, the output amount equals to the input value - fee to fully spend every input on the transaction and have no amount left for change
|
|
int amount = utxoDetails.allInputsAmount - fee;
|
|
|
|
if (amount <= 0) {
|
|
throw BitcoinTransactionWrongBalanceException(amount: utxoDetails.allInputsAmount + fee);
|
|
}
|
|
|
|
// Attempting to send less than the dust limit
|
|
if (isBelowDust(amount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
if (outputs.length == 1) {
|
|
outputs[0] = BitcoinOutput(address: outputs.last.address, value: BigInt.from(amount));
|
|
}
|
|
|
|
return ElectrumEstimatedTx(
|
|
utxos: utxoDetails.utxos,
|
|
inputPrivKeyInfos: utxoDetails.inputPrivKeyInfos,
|
|
publicKeys: utxoDetails.publicKeys,
|
|
fee: fee,
|
|
amount: amount,
|
|
isSendAll: true,
|
|
hasChange: false,
|
|
memo: memo,
|
|
spendsUnconfirmedTX: utxoDetails.spendsUnconfirmedTX,
|
|
);
|
|
}
|
|
|
|
Future<ElectrumEstimatedTx> estimateTxForAmountMweb(
|
|
int credentialsAmount,
|
|
List<BitcoinOutput> outputs,
|
|
int feeRate, {
|
|
int? inputsCount,
|
|
String? memo,
|
|
bool? useUnconfirmed,
|
|
UnspentCoinType coinTypeToSpendFrom = UnspentCoinType.any,
|
|
}) async {
|
|
// Attempting to send less than the dust limit
|
|
if (isBelowDust(credentialsAmount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
final utxoDetails = createUTXOS(
|
|
sendAll: false,
|
|
credentialsAmount: credentialsAmount,
|
|
inputsCount: inputsCount,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
|
|
final spendingAllCoins = utxoDetails.availableInputs.length == utxoDetails.utxos.length;
|
|
final spendingAllConfirmedCoins = !utxoDetails.spendsUnconfirmedTX &&
|
|
utxoDetails.utxos.length ==
|
|
utxoDetails.availableInputs.length - utxoDetails.unconfirmedCoins.length;
|
|
|
|
// How much is being spent - how much is being sent
|
|
int amountLeftForChangeAndFee = utxoDetails.allInputsAmount - credentialsAmount;
|
|
|
|
if (amountLeftForChangeAndFee <= 0) {
|
|
if (!spendingAllCoins) {
|
|
return estimateTxForAmountMweb(
|
|
credentialsAmount,
|
|
outputs,
|
|
feeRate,
|
|
inputsCount: utxoDetails.utxos.length + 1,
|
|
memo: memo,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
}
|
|
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
|
|
final changeAddress = await (walletAddresses as LitecoinWalletAddresses).getChangeAddress(
|
|
inputs: utxoDetails.availableInputs,
|
|
outputs: outputs,
|
|
);
|
|
final address = RegexUtils.addressTypeFromStr(changeAddress.address, network);
|
|
outputs.add(BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(amountLeftForChangeAndFee),
|
|
isChange: true,
|
|
));
|
|
|
|
// Get Derivation path for change Address since it is needed in Litecoin and BitcoinCash hardware Wallets
|
|
final changeDerivationPath =
|
|
(changeAddress as BitcoinAddressRecord).derivationInfo.derivationPath.toString();
|
|
utxoDetails.publicKeys[address.pubKeyHash()] =
|
|
PublicKeyWithDerivationPath('', changeDerivationPath);
|
|
|
|
int fee = await calcFeeMweb(
|
|
utxos: utxoDetails.utxos,
|
|
// Always take only not updated bitcoin outputs here so for every estimation
|
|
// the SP outputs are re-generated to the proper taproot addresses
|
|
outputs: outputs,
|
|
memo: memo,
|
|
feeRate: feeRate,
|
|
);
|
|
|
|
if (fee == 0) {
|
|
throw BitcoinTransactionNoFeeException();
|
|
}
|
|
|
|
int amount = credentialsAmount;
|
|
final lastOutput = outputs.last;
|
|
final amountLeftForChange = amountLeftForChangeAndFee - fee;
|
|
|
|
if (isBelowDust(amountLeftForChange)) {
|
|
// If has change that is lower than dust, will end up with tx rejected by network rules
|
|
// so remove the change amount
|
|
outputs.removeLast();
|
|
outputs.removeLast();
|
|
|
|
if (amountLeftForChange < 0) {
|
|
if (!spendingAllCoins) {
|
|
return estimateTxForAmountMweb(
|
|
credentialsAmount,
|
|
outputs,
|
|
feeRate,
|
|
inputsCount: utxoDetails.utxos.length + 1,
|
|
memo: memo,
|
|
useUnconfirmed: useUnconfirmed ?? spendingAllConfirmedCoins,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
} else {
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
}
|
|
|
|
return ElectrumEstimatedTx(
|
|
utxos: utxoDetails.utxos,
|
|
inputPrivKeyInfos: utxoDetails.inputPrivKeyInfos,
|
|
publicKeys: utxoDetails.publicKeys,
|
|
fee: fee,
|
|
amount: amount,
|
|
hasChange: false,
|
|
isSendAll: spendingAllCoins,
|
|
memo: memo,
|
|
spendsUnconfirmedTX: utxoDetails.spendsUnconfirmedTX,
|
|
);
|
|
} else {
|
|
// Here, lastOutput already is change, return the amount left without the fee to the user's address.
|
|
outputs[outputs.length - 1] = BitcoinOutput(
|
|
address: lastOutput.address,
|
|
value: BigInt.from(amountLeftForChange),
|
|
isChange: true,
|
|
);
|
|
|
|
return ElectrumEstimatedTx(
|
|
utxos: utxoDetails.utxos,
|
|
inputPrivKeyInfos: utxoDetails.inputPrivKeyInfos,
|
|
publicKeys: utxoDetails.publicKeys,
|
|
fee: fee,
|
|
amount: amount,
|
|
hasChange: true,
|
|
isSendAll: spendingAllCoins,
|
|
memo: memo,
|
|
spendsUnconfirmedTX: utxoDetails.spendsUnconfirmedTX,
|
|
);
|
|
}
|
|
}
|
|
|
|
Future<int> calcFeeMweb({
|
|
required List<UtxoWithAddress> utxos,
|
|
required List<BitcoinBaseOutput> outputs,
|
|
String? memo,
|
|
required int feeRate,
|
|
}) async {
|
|
final spendsMweb = utxos.any((utxo) => utxo.utxo.scriptType == SegwitAddressType.mweb);
|
|
final paysToMweb = outputs
|
|
.any((output) => output.toOutput.scriptPubKey.getAddressType() == SegwitAddressType.mweb);
|
|
if (!spendsMweb && !paysToMweb) {
|
|
return super.calcFee(utxos: utxos, outputs: outputs, memo: memo, feeRate: feeRate);
|
|
}
|
|
|
|
if (!mwebEnabled) {
|
|
throw Exception("MWEB is not enabled! can't calculate fee without starting the mweb server!");
|
|
}
|
|
|
|
if (outputs.length == 1 && outputs[0].toOutput.amount == BigInt.zero) {
|
|
outputs = [
|
|
BitcoinScriptOutput(
|
|
script: outputs[0].toOutput.scriptPubKey,
|
|
value: utxos.sumOfUtxosValue(),
|
|
)
|
|
];
|
|
}
|
|
|
|
// https://github.com/ltcmweb/mwebd?tab=readme-ov-file#fee-estimation
|
|
final preOutputSum =
|
|
outputs.fold<BigInt>(BigInt.zero, (acc, output) => acc + output.toOutput.amount);
|
|
var fee = utxos.sumOfUtxosValue() - preOutputSum;
|
|
|
|
// determines if the fee is correct:
|
|
BigInt _sumOutputAmounts(List<TxOutput> outputs) {
|
|
BigInt sum = BigInt.zero;
|
|
for (final e in outputs) {
|
|
sum += e.amount;
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
final sum1 = _sumOutputAmounts(outputs.map((e) => e.toOutput).toList()) + fee;
|
|
final sum2 = utxos.sumOfUtxosValue();
|
|
if (sum1 != sum2) {
|
|
printV("@@@@@ WE HAD TO ADJUST THE FEE! @@@@@@@@");
|
|
final diff = sum2 - sum1;
|
|
// add the difference to the fee (abs value):
|
|
fee += diff.abs();
|
|
}
|
|
|
|
final txb =
|
|
BitcoinTransactionBuilder(utxos: utxos, outputs: outputs, fee: fee, network: network);
|
|
final resp = await CwMweb.create(CreateRequest(
|
|
rawTx: txb.buildTransaction((a, b, c, d) => '').toBytes(),
|
|
scanSecret: scanSecret,
|
|
spendSecret: spendSecret,
|
|
feeRatePerKb: Int64(feeRate * 1000),
|
|
dryRun: true));
|
|
final tx = BtcTransaction.fromRaw(hex.encode(resp.rawTx));
|
|
final posUtxos = utxos
|
|
.where((utxo) => tx.inputs
|
|
.any((input) => input.txId == utxo.utxo.txHash && input.txIndex == utxo.utxo.vout))
|
|
.toList();
|
|
final posOutputSum = tx.outputs.fold<int>(0, (acc, output) => acc + output.amount.toInt());
|
|
final mwebInputSum = utxos.sumOfUtxosValue() - posUtxos.sumOfUtxosValue();
|
|
final expectedPegin = max(0, (preOutputSum - mwebInputSum).toInt());
|
|
var feeIncrease = posOutputSum - expectedPegin;
|
|
if (expectedPegin > 0 && fee == BigInt.zero) {
|
|
feeIncrease += await super.calcFee(
|
|
utxos: posUtxos,
|
|
outputs: tx.outputs
|
|
.map((output) =>
|
|
BitcoinScriptOutput(script: output.scriptPubKey, value: output.amount))
|
|
.toList(),
|
|
memo: memo,
|
|
feeRate: feeRate,
|
|
) +
|
|
feeRate * 41;
|
|
}
|
|
return fee.toInt() + feeIncrease;
|
|
}
|
|
|
|
@override
|
|
Future<PendingTransaction> createTransaction(Object credentials) async {
|
|
final transactionCredentials = credentials as BitcoinTransactionCredentials;
|
|
|
|
try {
|
|
late PendingBitcoinTransaction tx;
|
|
|
|
try {
|
|
final data = getCreateTxDataFromCredentials(credentials);
|
|
final coinTypeToSpendFrom = transactionCredentials.coinTypeToSpendFrom;
|
|
|
|
ElectrumEstimatedTx estimatedTx;
|
|
if (data.sendAll) {
|
|
estimatedTx = await estimateSendAllTxMweb(
|
|
data.outputs,
|
|
data.feeRate,
|
|
memo: data.memo,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
} else {
|
|
estimatedTx = await estimateTxForAmountMweb(
|
|
data.amount,
|
|
data.outputs,
|
|
data.feeRate,
|
|
memo: data.memo,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
}
|
|
|
|
if (walletInfo.isHardwareWallet) {
|
|
final transaction = await buildHardwareWalletTransaction(
|
|
utxos: estimatedTx.utxos,
|
|
outputs: data.outputs,
|
|
publicKeys: estimatedTx.publicKeys,
|
|
fee: BigInt.from(estimatedTx.fee),
|
|
memo: estimatedTx.memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: true,
|
|
);
|
|
|
|
tx = PendingBitcoinTransaction(
|
|
transaction,
|
|
type,
|
|
sendWorker: waitSendWorker,
|
|
amount: estimatedTx.amount,
|
|
fee: estimatedTx.fee,
|
|
feeRate: data.feeRate.toString(),
|
|
hasChange: estimatedTx.hasChange,
|
|
isSendAll: estimatedTx.isSendAll,
|
|
hasTaprootInputs: false, // ToDo: (Konsti) Support Taproot
|
|
)..addListener((transaction) async {
|
|
transactionHistory.addOne(transaction);
|
|
await updateBalance();
|
|
await updateAllUnspents();
|
|
});
|
|
} else {
|
|
final txb = BitcoinTransactionBuilder(
|
|
utxos: estimatedTx.utxos,
|
|
outputs: data.outputs,
|
|
fee: BigInt.from(estimatedTx.fee),
|
|
network: network,
|
|
memo: estimatedTx.memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: !estimatedTx.spendsUnconfirmedTX,
|
|
);
|
|
|
|
bool hasTaprootInputs = false;
|
|
|
|
final transaction = txb.buildTransaction((txDigest, utxo, publicKey, sighash) {
|
|
String error = "Cannot find private key.";
|
|
|
|
ECPrivateInfo? key;
|
|
|
|
if (estimatedTx.inputPrivKeyInfos.isEmpty) {
|
|
error += "\nNo private keys generated.";
|
|
} else {
|
|
error += "\nAddress: ${utxo.ownerDetails.address.toAddress(network)}";
|
|
|
|
key = estimatedTx.inputPrivKeyInfos.firstWhereOrNull((element) {
|
|
final elemPubkey = element.privkey.getPublic().toHex();
|
|
if (elemPubkey == publicKey) {
|
|
return true;
|
|
} else {
|
|
error += "\nExpected: $publicKey";
|
|
error += "\nPubkey: $elemPubkey";
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (key == null) {
|
|
throw Exception(error);
|
|
}
|
|
|
|
if (utxo.utxo.isP2tr) {
|
|
hasTaprootInputs = true;
|
|
return key.privkey.signTapRoot(txDigest, sighash: sighash);
|
|
} else {
|
|
return key.privkey.signInput(txDigest, sigHash: sighash);
|
|
}
|
|
});
|
|
|
|
tx = PendingBitcoinTransaction(
|
|
transaction,
|
|
type,
|
|
sendWorker: waitSendWorker,
|
|
amount: estimatedTx.amount,
|
|
fee: estimatedTx.fee,
|
|
feeRate: data.feeRate.toString(),
|
|
hasChange: estimatedTx.hasChange,
|
|
isSendAll: estimatedTx.isSendAll,
|
|
hasTaprootInputs: hasTaprootInputs,
|
|
utxos: estimatedTx.utxos,
|
|
)..addListener((transaction) async {
|
|
transactionHistory.addOne(transaction);
|
|
|
|
unspentCoins
|
|
.removeWhere((utxo) => estimatedTx.utxos.any((e) => e.utxo.txHash == utxo.hash));
|
|
|
|
await updateBalance();
|
|
await updateAllUnspents();
|
|
});
|
|
}
|
|
} catch (e) {
|
|
throw e;
|
|
}
|
|
|
|
tx.isMweb = mwebEnabled;
|
|
|
|
if (!mwebEnabled) {
|
|
tx.changeAddressOverride =
|
|
(await (walletAddresses as LitecoinWalletAddresses).getChangeAddress(isPegIn: false))
|
|
.address;
|
|
return tx;
|
|
}
|
|
await waitForMwebAddresses();
|
|
|
|
final resp = await CwMweb.create(CreateRequest(
|
|
rawTx: hex.decode(tx.hex),
|
|
scanSecret: scanSecret,
|
|
spendSecret: spendSecret,
|
|
feeRatePerKb: Int64.parseInt(tx.feeRate) * 1000,
|
|
));
|
|
final tx2 = BtcTransaction.fromRaw(hex.encode(resp.rawTx));
|
|
|
|
bool hasMwebInput = false;
|
|
bool hasMwebOutput = false;
|
|
bool hasRegularOutput = false;
|
|
|
|
for (final output in transactionCredentials.outputs) {
|
|
final address = output.address.toLowerCase();
|
|
final extractedAddress = output.extractedAddress?.toLowerCase();
|
|
|
|
if (address.contains("mweb")) {
|
|
hasMwebOutput = true;
|
|
}
|
|
if (!address.contains("mweb")) {
|
|
hasRegularOutput = true;
|
|
}
|
|
if (extractedAddress != null && extractedAddress.isNotEmpty) {
|
|
if (extractedAddress.contains("mweb")) {
|
|
hasMwebOutput = true;
|
|
}
|
|
if (!extractedAddress.contains("mweb")) {
|
|
hasRegularOutput = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// check if mweb inputs are used:
|
|
for (final utxo in tx.utxos) {
|
|
if (utxo.utxo.scriptType == SegwitAddressType.mweb) {
|
|
hasMwebInput = true;
|
|
}
|
|
}
|
|
|
|
bool isPegIn = !hasMwebInput && hasMwebOutput;
|
|
bool isPegOut = hasMwebInput && hasRegularOutput;
|
|
bool isRegular = !hasMwebInput && !hasMwebOutput;
|
|
tx.changeAddressOverride = (await (walletAddresses as LitecoinWalletAddresses)
|
|
.getChangeAddress(isPegIn: isPegIn || isRegular))
|
|
.address;
|
|
if (!hasMwebInput && !hasMwebOutput) {
|
|
tx.isMweb = false;
|
|
return tx;
|
|
}
|
|
|
|
// check if any of the inputs of this transaction are hog-ex:
|
|
// this list is only non-mweb inputs:
|
|
tx2.inputs.forEach((txInput) {
|
|
bool isHogEx = true;
|
|
|
|
final utxo = unspentCoins
|
|
.firstWhere((utxo) => utxo.hash == txInput.txId && utxo.vout == txInput.txIndex);
|
|
|
|
// TODO: detect actual hog-ex inputs
|
|
|
|
if (!isHogEx) {
|
|
return;
|
|
}
|
|
|
|
int confirmations = utxo.confirmations ?? 0;
|
|
if (confirmations < 6) {
|
|
throw Exception(
|
|
"A transaction input has less than 6 confirmations, please try again later.");
|
|
}
|
|
});
|
|
|
|
tx.hexOverride = tx2
|
|
.copyWith(
|
|
witnesses: tx2.inputs.asMap().entries.map((e) {
|
|
final utxo = unspentCoins
|
|
.firstWhere((utxo) => utxo.hash == e.value.txId && utxo.vout == e.value.txIndex);
|
|
final key = ECPrivate.fromBip32(
|
|
bip32: hdWallet.derive((utxo.bitcoinAddressRecord as BitcoinAddressRecord)
|
|
.derivationInfo
|
|
.derivationPath));
|
|
final digest = tx2.getTransactionSegwitDigit(
|
|
txInIndex: e.key,
|
|
script: key.getPublic().toP2pkhAddress().toScriptPubKey(),
|
|
amount: BigInt.from(utxo.value),
|
|
);
|
|
return TxWitnessInput(stack: [key.signInput(digest), key.getPublic().toHex()]);
|
|
}).toList())
|
|
.toHex();
|
|
tx.outputAddresses = resp.outputId;
|
|
|
|
return tx
|
|
..addListener((transaction) async {
|
|
final addresses = <String>{};
|
|
transaction.inputAddresses?.forEach((id) async {
|
|
final utxo = mwebUtxosBox.get(id);
|
|
// await mwebUtxosBox.delete(id); // gets deleted in checkMwebUtxosSpent
|
|
if (utxo == null) return;
|
|
// mark utxo as spent so we add it to the unconfirmed balance (as negative):
|
|
utxo.spent = true;
|
|
await mwebUtxosBox.put(id, utxo);
|
|
final addressRecord = walletAddresses.allAddresses
|
|
.firstWhere((addressRecord) => addressRecord.address == utxo.address);
|
|
if (!addresses.contains(utxo.address)) {
|
|
addresses.add(utxo.address);
|
|
}
|
|
addressRecord.balance -= utxo.value.toInt();
|
|
});
|
|
transaction.inputAddresses?.addAll(addresses);
|
|
printV("isPegIn: $isPegIn, isPegOut: $isPegOut");
|
|
transaction.additionalInfo["isPegIn"] = isPegIn;
|
|
transaction.additionalInfo["isPegOut"] = isPegOut;
|
|
transactionHistory.addOne(transaction);
|
|
await updateUnspent();
|
|
await updateBalance();
|
|
});
|
|
} catch (e, s) {
|
|
printV(e);
|
|
printV(s);
|
|
if (e.toString().contains("commit failed")) {
|
|
printV(e);
|
|
throw Exception("Transaction commit failed (no peers responded), please try again.");
|
|
}
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> refreshUnspentCoinsInfo() async {
|
|
try {
|
|
final List<dynamic> keys = [];
|
|
final currentWalletUnspentCoins =
|
|
unspentCoinsInfo.values.where((record) => record.walletId == id);
|
|
|
|
for (final element in currentWalletUnspentCoins) {
|
|
if (RegexUtils.addressTypeFromStr(element.address, network) is MwebAddress) continue;
|
|
|
|
final existUnspentCoins = unspentCoins.where((coin) => element == coin);
|
|
|
|
if (existUnspentCoins.isEmpty) {
|
|
keys.add(element.key);
|
|
}
|
|
}
|
|
|
|
if (keys.isNotEmpty) {
|
|
await unspentCoinsInfo.deleteAll(keys);
|
|
}
|
|
} catch (e) {
|
|
printV("refreshUnspentCoinsInfo $e");
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<void> save() async {
|
|
await super.save();
|
|
}
|
|
|
|
@override
|
|
Future<void> close({bool shouldCleanup = false}) async {
|
|
_utxoStream?.cancel();
|
|
_feeRatesTimer?.cancel();
|
|
_syncTimer?.cancel();
|
|
_processingTimer?.cancel();
|
|
if (shouldCleanup) {
|
|
try {
|
|
await stopSync();
|
|
} catch (_) {}
|
|
}
|
|
await super.close(shouldCleanup: shouldCleanup);
|
|
}
|
|
|
|
Future<void> setMwebEnabled(bool enabled) async {
|
|
if (mwebEnabled == enabled) {
|
|
return;
|
|
}
|
|
|
|
alwaysScan = enabled;
|
|
mwebEnabled = enabled;
|
|
(walletAddresses as LitecoinWalletAddresses).mwebEnabled = enabled;
|
|
await save();
|
|
try {
|
|
await stopSync();
|
|
} catch (_) {}
|
|
await startSync();
|
|
}
|
|
|
|
Future<StatusResponse> getStatusRequest() async {
|
|
final resp = await CwMweb.status(StatusRequest());
|
|
return resp;
|
|
}
|
|
|
|
@override
|
|
Future<String> signMessage(String message, {String? address = null}) async {
|
|
Bip32Slip10Secp256k1 HD = hdWallet;
|
|
|
|
final record = walletAddresses.allAddresses.firstWhere((element) => element.address == address);
|
|
|
|
if (record.isChange) {
|
|
HD = HD.childKey(Bip32KeyIndex(1));
|
|
} else {
|
|
HD = HD.childKey(Bip32KeyIndex(0));
|
|
}
|
|
|
|
HD = HD.childKey(Bip32KeyIndex(record.index));
|
|
final priv = ECPrivate.fromHex(HD.privateKey.privKey.toHex());
|
|
|
|
final privateKey = ECDSAPrivateKey.fromBytes(
|
|
priv.toBytes(),
|
|
Curves.generatorSecp256k1,
|
|
);
|
|
|
|
final signature =
|
|
signLitecoinMessage(utf8.encode(message), privateKey: privateKey, bipPrive: priv.prive);
|
|
|
|
return base64Encode(signature);
|
|
}
|
|
|
|
List<int> _magicPrefix(List<int> message, List<int> messagePrefix) {
|
|
final encodeLength = IntUtils.encodeVarint(message.length);
|
|
|
|
return [...messagePrefix, ...encodeLength, ...message];
|
|
}
|
|
|
|
List<int> signLitecoinMessage(List<int> message,
|
|
{required ECDSAPrivateKey privateKey, required Bip32PrivateKey bipPrive}) {
|
|
String messagePrefix = '\x19Litecoin Signed Message:\n';
|
|
final messageHash = QuickCrypto.sha256Hash(magicMessage(message, messagePrefix));
|
|
final signingKey = EcdsaSigningKey(privateKey);
|
|
ECDSASignature ecdsaSign =
|
|
signingKey.signDigestDeterminstic(digest: messageHash, hashFunc: () => SHA256());
|
|
final n = Curves.generatorSecp256k1.order! >> 1;
|
|
BigInt newS;
|
|
if (ecdsaSign.s.compareTo(n) > 0) {
|
|
newS = Curves.generatorSecp256k1.order! - ecdsaSign.s;
|
|
} else {
|
|
newS = ecdsaSign.s;
|
|
}
|
|
final rawSig = ECDSASignature(ecdsaSign.r, newS);
|
|
final rawSigBytes = rawSig.toBytes(BitcoinSignerUtils.baselen);
|
|
|
|
final pub = bipPrive.publicKey;
|
|
final ECDomainParameters curve = ECCurve_secp256k1();
|
|
final point = curve.curve.decodePoint(pub.point.toBytes());
|
|
|
|
final rawSigEc = ECSignature(rawSig.r, rawSig.s);
|
|
|
|
final recId = SignUtils.findRecoveryId(
|
|
SignUtils.getHexString(messageHash, offset: 0, length: messageHash.length),
|
|
rawSigEc,
|
|
Uint8List.fromList(pub.uncompressed),
|
|
);
|
|
|
|
final v = recId + 27 + (point!.isCompressed ? 4 : 0);
|
|
|
|
final combined = Uint8List.fromList([v, ...rawSigBytes]);
|
|
|
|
return combined;
|
|
}
|
|
|
|
List<int> magicMessage(List<int> message, String messagePrefix) {
|
|
final prefixBytes = StringUtils.encode(messagePrefix);
|
|
final magic = _magicPrefix(message, prefixBytes);
|
|
return QuickCrypto.sha256Hash(magic);
|
|
}
|
|
|
|
@override
|
|
Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
|
|
if (address == null) {
|
|
return false;
|
|
}
|
|
|
|
List<int> sigDecodedBytes = [];
|
|
|
|
if (signature.endsWith('=')) {
|
|
sigDecodedBytes = base64.decode(signature);
|
|
} else {
|
|
sigDecodedBytes = hex.decode(signature);
|
|
}
|
|
|
|
if (sigDecodedBytes.length != 64 && sigDecodedBytes.length != 65) {
|
|
throw ArgumentException(
|
|
"litecoin signature must be 64 bytes without recover-id or 65 bytes with recover-id");
|
|
}
|
|
|
|
String messagePrefix = '\x19Litecoin Signed Message:\n';
|
|
final messageHash = QuickCrypto.sha256Hash(magicMessage(utf8.encode(message), messagePrefix));
|
|
|
|
List<int> correctSignature =
|
|
sigDecodedBytes.length == 65 ? sigDecodedBytes.sublist(1) : List.from(sigDecodedBytes);
|
|
List<int> rBytes = correctSignature.sublist(0, 32);
|
|
List<int> sBytes = correctSignature.sublist(32);
|
|
final sig = ECDSASignature(BigintUtils.fromBytes(rBytes), BigintUtils.fromBytes(sBytes));
|
|
|
|
List<int> possibleRecoverIds = [0, 1];
|
|
|
|
final baseAddress = RegexUtils.addressTypeFromStr(address, network);
|
|
|
|
for (int recoveryId in possibleRecoverIds) {
|
|
final pubKey = sig.recoverPublicKey(messageHash, Curves.generatorSecp256k1, recoveryId);
|
|
final recoveredPub = ECPublic.fromBytes(pubKey!.toBytes());
|
|
|
|
String? recoveredAddress;
|
|
|
|
if (baseAddress is P2pkAddress) {
|
|
recoveredAddress = recoveredPub.toP2pkAddress().toAddress(network);
|
|
} else if (baseAddress is P2pkhAddress) {
|
|
recoveredAddress = recoveredPub.toP2pkhAddress().toAddress(network);
|
|
} else if (baseAddress is P2wshAddress) {
|
|
recoveredAddress = recoveredPub.toP2wshAddress().toAddress(network);
|
|
} else if (baseAddress is P2wpkhAddress) {
|
|
recoveredAddress = recoveredPub.toP2wpkhAddress().toAddress(network);
|
|
}
|
|
|
|
if (recoveredAddress == address) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
LedgerConnection? _ledgerConnection;
|
|
LitecoinLedgerApp? _litecoinLedgerApp;
|
|
|
|
@override
|
|
void setLedgerConnection(LedgerConnection connection) {
|
|
_ledgerConnection = connection;
|
|
_litecoinLedgerApp = LitecoinLedgerApp(_ledgerConnection!,
|
|
derivationPath: walletInfo.derivationInfo!.derivationPath!);
|
|
}
|
|
|
|
@override
|
|
Future<BtcTransaction> buildHardwareWalletTransaction({
|
|
required List<BitcoinBaseOutput> outputs,
|
|
required BigInt fee,
|
|
required List<UtxoWithAddress> utxos,
|
|
required Map<String, PublicKeyWithDerivationPath> publicKeys,
|
|
String? memo,
|
|
bool enableRBF = false,
|
|
BitcoinOrdering inputOrdering = BitcoinOrdering.bip69,
|
|
BitcoinOrdering outputOrdering = BitcoinOrdering.bip69,
|
|
}) async {
|
|
final readyInputs = <LedgerTransaction>[];
|
|
for (final utxo in utxos) {
|
|
final rawTx =
|
|
(await getTransactionExpanded(hash: utxo.utxo.txHash)).originalTransaction.toHex();
|
|
final publicKeyAndDerivationPath = publicKeys[utxo.ownerDetails.address.pubKeyHash()]!;
|
|
|
|
readyInputs.add(LedgerTransaction(
|
|
rawTx: rawTx,
|
|
outputIndex: utxo.utxo.vout,
|
|
ownerPublicKey: Uint8List.fromList(hex.decode(publicKeyAndDerivationPath.publicKey)),
|
|
ownerDerivationPath: publicKeyAndDerivationPath.derivationPath,
|
|
// sequence: enableRBF ? 0x1 : 0xffffffff,
|
|
sequence: 0xffffffff,
|
|
));
|
|
}
|
|
|
|
String? changePath;
|
|
for (final output in outputs) {
|
|
final maybeChangePath = publicKeys[(output as BitcoinOutput).address.pubKeyHash()];
|
|
if (maybeChangePath != null) changePath ??= maybeChangePath.derivationPath;
|
|
}
|
|
|
|
final rawHex = await _litecoinLedgerApp!.createTransaction(
|
|
inputs: readyInputs,
|
|
outputs: outputs
|
|
.map((e) => TransactionOutput.fromBigInt((e as BitcoinOutput).value,
|
|
Uint8List.fromList(e.address.toScriptPubKey().toBytes())))
|
|
.toList(),
|
|
changePath: changePath,
|
|
sigHashType: 0x01,
|
|
additionals: ["bech32"],
|
|
isSegWit: true,
|
|
useTrustedInputForSegwit: true);
|
|
|
|
return BtcTransaction.fromRaw(rawHex);
|
|
}
|
|
}
|