mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2025-05-28 22:54:56 +00:00
2049 lines
65 KiB
Dart
2049 lines
65 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'dart:isolate';
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import 'package:bitcoin_base/bitcoin_base.dart';
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import 'package:cw_bitcoin/electrum_worker/electrum_worker.dart';
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import 'package:cw_bitcoin/electrum_worker/electrum_worker_methods.dart';
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import 'package:cw_bitcoin/electrum_worker/electrum_worker_params.dart';
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import 'package:cw_bitcoin/electrum_worker/methods/methods.dart';
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import 'package:cw_bitcoin/wallet_seed_bytes.dart';
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import 'package:cw_core/utils/print_verbose.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:blockchain_utils/blockchain_utils.dart';
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import 'package:collection/collection.dart';
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import 'package:cw_bitcoin/bitcoin_address_record.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_credentials.dart';
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import 'package:cw_bitcoin/bitcoin_unspent.dart';
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import 'package:cw_bitcoin/bitcoin_wallet_keys.dart';
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import 'package:cw_bitcoin/electrum_balance.dart';
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import 'package:cw_bitcoin/electrum_transaction_history.dart';
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import 'package:cw_bitcoin/electrum_transaction_info.dart';
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import 'package:cw_bitcoin/electrum_wallet_addresses.dart';
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import 'package:cw_bitcoin/exceptions.dart';
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import 'package:cw_bitcoin/pending_bitcoin_transaction.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cw_core/encryption_file_utils.dart';
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import 'package:cw_core/node.dart';
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import 'package:cw_core/pathForWallet.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_priority.dart';
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import 'package:cw_core/unspent_coins_info.dart';
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import 'package:cw_core/wallet_base.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:hive/hive.dart';
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import 'package:ledger_flutter_plus/ledger_flutter_plus.dart' as ledger;
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import 'package:mobx/mobx.dart';
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part 'electrum_wallet.g.dart';
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class ElectrumWallet = ElectrumWalletBase with _$ElectrumWallet;
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abstract class ElectrumWalletBase
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extends WalletBase<ElectrumBalance, ElectrumTransactionHistory, ElectrumTransactionInfo>
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with Store, WalletKeysFile {
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ReceivePort? receivePort;
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SendPort? workerSendPort;
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StreamSubscription<dynamic>? _workerSubscription;
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Isolate? _workerIsolate;
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final Map<int, dynamic> _responseCompleters = {};
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final Map<int, dynamic> _errorCompleters = {};
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int _messageId = 0;
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static const String SIGN_MESSAGE_PREFIX = '\x18Bitcoin Signed Message:\n';
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ElectrumWalletBase({
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required String password,
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required WalletInfo walletInfo,
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required this.unspentCoinsInfo,
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required this.network,
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required this.encryptionFileUtils,
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required this.hdWallets,
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String? xpub,
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String? mnemonic,
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this.passphrase,
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ElectrumBalance? initialBalance,
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CryptoCurrency? currency,
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this.alwaysScan,
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List<BitcoinUnspent>? initialUnspentCoins,
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bool? didInitialSync,
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}) : _xpub = xpub,
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syncStatus = NotConnectedSyncStatus(),
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_password = password,
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isEnabledAutoGenerateSubaddress = true,
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unspentCoins = ElectrumUnspentCoins.of(initialUnspentCoins ?? []),
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scripthashesListening = [],
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balance = ObservableMap<CryptoCurrency, ElectrumBalance>.of(currency != null
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? {
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currency: initialBalance ??
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ElectrumBalance(
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confirmed: 0,
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unconfirmed: 0,
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frozen: 0,
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)
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}
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: {}),
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this.isTestnet = !network.isMainnet,
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this._mnemonic = mnemonic,
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_didInitialSync = didInitialSync ?? false,
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super(walletInfo) {
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transactionHistory = ElectrumTransactionHistory(
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walletInfo: walletInfo,
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password: password,
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encryptionFileUtils: encryptionFileUtils,
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);
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reaction((_) => syncStatus, syncStatusReaction);
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sharedPrefs.complete(SharedPreferences.getInstance());
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}
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static Future<Map<CWBitcoinDerivationType, Bip32Slip10Secp256k1>> getAccountHDWallets({
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required WalletInfo walletInfo,
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required BasedUtxoNetwork network,
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String? mnemonic,
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String? passphrase,
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String? xpub,
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}) async {
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if (mnemonic == null && xpub == null) {
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throw Exception(
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"To create a Wallet you need either a seed or an xpub. This should not happen");
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}
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late WalletSeedData walletSeedData;
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if (mnemonic != null) {
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walletSeedData = await WalletSeedData.fromMnemonic(walletInfo, mnemonic, passphrase);
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} else {
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walletSeedData = WalletSeedData.fromXpub(walletInfo, xpub!, network);
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}
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return walletSeedData.hdWallets;
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}
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// Sends a request to the worker and returns a future that completes when the worker responds
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Future<dynamic> waitSendWorker(
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ElectrumWorkerRequest request, [
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Duration timeout = const Duration(seconds: 30),
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]) {
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final messageId = ++_messageId;
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final completer = Completer<dynamic>();
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_responseCompleters[messageId] = completer;
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final json = request.toJson();
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json['id'] = messageId;
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workerSendPort!.send(json);
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try {
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return completer.future.timeout(Duration(seconds: 30));
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} catch (e) {
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_errorCompleters.addAll({messageId: e});
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_responseCompleters.remove(messageId);
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rethrow;
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}
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}
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@action
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Future<void> handleWorkerResponse(dynamic message) async {
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// printV('Main: received message: $message');
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Map<String, dynamic> messageJson;
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if (message is String) {
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messageJson = jsonDecode(message) as Map<String, dynamic>;
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} else {
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messageJson = message as Map<String, dynamic>;
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}
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final workerMethod = messageJson['method'] as String;
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final workerError = messageJson['error'] as String?;
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final responseId = messageJson['id'] as int?;
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final completed = messageJson['completed'] as bool?;
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switch (workerMethod) {
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case ElectrumWorkerMethods.connectionMethod:
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if (workerError != null) {
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_onConnectionStatusChange(ConnectionStatus.failed);
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break;
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}
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final response = ElectrumWorkerConnectionResponse.fromJson(messageJson);
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_onConnectionStatusChange(response.result);
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break;
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case ElectrumRequestMethods.headersSubscribeMethod:
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final response = ElectrumWorkerHeadersSubscribeResponse.fromJson(messageJson);
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await onHeadersResponse(response.result);
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break;
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case ElectrumRequestMethods.scripthashesSubscribeMethod:
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final response = ElectrumWorkerScripthashesSubscribeResponse.fromJson(messageJson);
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await onScripthashesStatusResponse(response.result);
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break;
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case ElectrumRequestMethods.getBalanceMethod:
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final response = ElectrumWorkerGetBalanceResponse.fromJson(messageJson);
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onBalanceResponse(response.result);
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break;
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case ElectrumRequestMethods.getHistoryMethod:
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onHistoriesResponse(ElectrumWorkerGetHistoryResponse.fromJson(messageJson));
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break;
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case ElectrumRequestMethods.listunspentMethod:
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final response = ElectrumWorkerListUnspentResponse.fromJson(messageJson);
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onUnspentResponse(response.result);
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break;
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case ElectrumRequestMethods.estimateFeeMethod:
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final response = ElectrumWorkerGetFeesResponse.fromJson(messageJson);
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onFeesResponse(response.result);
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break;
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}
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final shouldComplete = workerError != null || completed == true;
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if (shouldComplete && responseId != null && _responseCompleters.containsKey(responseId)) {
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_responseCompleters[responseId]!.complete(message);
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_responseCompleters.remove(responseId);
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}
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}
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int estimatedTransactionSize({
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required List<BitcoinAddressType> inputTypes,
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required List<BitcoinAddressType> outputTypes,
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String? memo,
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bool enableRBF = true,
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}) =>
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BitcoinTransactionBuilder.estimateTransactionSizeFromTypes(
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inputTypes: inputTypes,
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outputTypes: outputTypes,
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network: network,
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memo: memo,
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enableRBF: enableRBF,
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);
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bool? alwaysScan;
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final Map<CWBitcoinDerivationType, Bip32Slip10Secp256k1> hdWallets;
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Bip32Slip10Secp256k1 get hdWallet =>
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hdWallets[CWBitcoinDerivationType.bip39] ?? hdWallets[CWBitcoinDerivationType.electrum]!;
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final String? _mnemonic;
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final EncryptionFileUtils encryptionFileUtils;
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@override
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final String? passphrase;
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@override
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@observable
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bool isEnabledAutoGenerateSubaddress;
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Box<UnspentCoinsInfo> unspentCoinsInfo;
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@override
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late ElectrumWalletAddresses walletAddresses;
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@override
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@observable
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late ObservableMap<CryptoCurrency, ElectrumBalance> balance;
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@override
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@observable
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SyncStatus syncStatus;
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String? _xpub;
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String get xpub => _xpub ?? hdWallet.publicKey.toExtended;
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@override
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String? get seed => _mnemonic;
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@override
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WalletKeysData get walletKeysData =>
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WalletKeysData(mnemonic: _mnemonic, xPub: xpub, passphrase: passphrase);
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@override
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String get password => _password;
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BasedUtxoNetwork network;
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@override
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bool isTestnet;
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bool _isTryingToConnect = false;
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Completer<SharedPreferences> sharedPrefs = Completer();
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@observable
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int? currentChainTip;
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@override
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BitcoinWalletKeys get keys => BitcoinWalletKeys(
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wif: WifEncoder.encode(hdWallet.privateKey.raw, netVer: network.wifNetVer),
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privateKey: hdWallet.privateKey.toHex(),
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publicKey: hdWallet.publicKey.toHex(),
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);
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String _password;
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ElectrumUnspentCoins unspentCoins;
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@observable
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TransactionPriorities? feeRates;
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int feeRate(TransactionPriority priority) => feeRates![priority];
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@observable
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List<String> scripthashesListening;
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// READ: https://electrumx.readthedocs.io/en/latest/protocol-basics.html#status
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@observable
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List<String> scripthashesWithStatus = [];
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bool _chainTipListenerOn = false;
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bool _didInitialSync;
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void Function(FlutterErrorDetails)? _onError;
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Timer? _autoSaveTimer;
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Timer? _updateFeeRateTimer;
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static const int _autoSaveInterval = 1;
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Future<void> init() async {
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await walletAddresses.init();
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await transactionHistory.init();
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_autoSaveTimer =
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Timer.periodic(Duration(minutes: _autoSaveInterval), (_) async => await save());
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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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try {
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if (syncStatus is SynchronizingSyncStatus) {
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return;
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}
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syncStatus = SynchronizingSyncStatus();
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// INFO: FIRST (always): Call subscribe for headers, wait for completion to update currentChainTip (needed for other methods)
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await subscribeForHeaders(true);
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await subscribeForStatuses(true);
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final addressesWithHistory = walletAddresses.allAddresses
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.where((e) => scripthashesWithStatus.contains(e.scriptHash))
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.toList();
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// INFO: SECOND: Start loading transaction histories for every address, this will help discover addresses until the unused gap limit has been reached, which will help finding the full balance and unspents next
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final hadTxs = transactionHistory.transactions.isNotEmpty;
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final isFirstSync = !_didInitialSync;
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await updateTransactions(addressesWithHistory, isFirstSync);
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_didInitialSync = true;
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final nowHasTxs = transactionHistory.transactions.isNotEmpty;
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final shouldUpdateDates = !hadTxs && isFirstSync && nowHasTxs;
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if (shouldUpdateDates) {
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await updateTransactions(addressesWithHistory, true);
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}
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// INFO: THIRD: Get the full wallet's balance with all addresses considered
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await updateBalance(scripthashesWithStatus.toSet(), true);
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syncStatus = SyncedSyncStatus();
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// INFO: FOURTH: Get the latest recommended fee rates and start update timer
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await updateFeeRates();
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_updateFeeRateTimer ??=
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Timer.periodic(const Duration(seconds: 5), (timer) async => await updateFeeRates());
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await save();
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} catch (e, stacktrace) {
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printV(stacktrace);
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printV("startSync $e");
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syncStatus = FailedSyncStatus();
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}
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}
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@action
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void callError(FlutterErrorDetails error) {
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_onError?.call(error);
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}
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Future<void> updateFeeRates() async {
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workerSendPort!.send(ElectrumWorkerGetFeesRequest().toJson());
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}
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@action
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Future<void> onFeesResponse(TransactionPriorities? result) async {
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if (result != null) {
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feeRates = result;
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}
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}
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Node? node;
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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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this.node = node;
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try {
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syncStatus = ConnectingSyncStatus();
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if (_workerIsolate != null) {
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_workerIsolate!.kill(priority: Isolate.immediate);
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_workerSubscription?.cancel();
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receivePort?.close();
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}
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receivePort = ReceivePort();
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_workerIsolate = await Isolate.spawn<SendPort>(ElectrumWorker.run, receivePort!.sendPort);
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_workerSubscription = receivePort!.listen((message) {
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if (message is SendPort) {
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workerSendPort = message;
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workerSendPort!.send(
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ElectrumWorkerConnectionRequest(
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uri: node.uri,
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useSSL: node.useSSL ?? false,
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network: network,
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walletType: walletInfo.type,
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).toJson(),
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);
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} else {
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handleWorkerResponse(message);
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}
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});
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} catch (e, stacktrace) {
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printV(stacktrace);
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printV("connectToNode $e");
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syncStatus = FailedSyncStatus();
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}
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}
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int get dustAmount => 546;
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bool isBelowDust(int amount) => amount <= dustAmount;
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ElectrumTxCreateUtxoDetails createUTXOS({
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required bool sendAll,
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int credentialsAmount = 0,
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int? inputsCount,
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}) {
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List<UtxoWithAddress> utxos = [];
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List<Outpoint> vinOutpoints = [];
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List<ECPrivateInfo> inputPrivKeyInfos = [];
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final publicKeys = <String, PublicKeyWithDerivationPath>{};
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int allInputsAmount = 0;
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bool spendsUnconfirmedTX = false;
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int leftAmount = credentialsAmount;
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var availableInputs = unspentCoins.where((utx) {
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if (!utx.isSending || utx.isFrozen) {
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return false;
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}
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return true;
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}).toList();
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final unconfirmedCoins = availableInputs.where((utx) => utx.confirmations == 0).toList();
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for (int i = 0; i < availableInputs.length; i++) {
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final utx = availableInputs[i];
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if (!spendsUnconfirmedTX) spendsUnconfirmedTX = utx.confirmations == 0;
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allInputsAmount += utx.value;
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leftAmount = leftAmount - utx.value;
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final address = RegexUtils.addressTypeFromStr(utx.address, network);
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ECPrivate? privkey;
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if (!isHardwareWallet) {
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final addressRecord = (utx.bitcoinAddressRecord as BitcoinAddressRecord);
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final path = addressRecord.derivationInfo.derivationPath
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.addElem(Bip32KeyIndex(
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BitcoinAddressUtils.getAccountFromChange(addressRecord.isChange),
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))
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.addElem(Bip32KeyIndex(addressRecord.index));
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privkey = ECPrivate.fromBip32(bip32: hdWallet.derive(path));
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}
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vinOutpoints.add(Outpoint(txid: utx.hash, index: utx.vout));
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String pubKeyHex;
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if (privkey != null) {
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inputPrivKeyInfos.add(ECPrivateInfo(privkey, address.type == SegwitAddressType.p2tr));
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pubKeyHex = privkey.getPublic().toHex();
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} else {
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pubKeyHex = walletAddresses.hdWallet
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.childKey(Bip32KeyIndex(utx.bitcoinAddressRecord.index))
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.publicKey
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.toHex();
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}
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if (utx.bitcoinAddressRecord is BitcoinAddressRecord) {
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final derivationPath = (utx.bitcoinAddressRecord as BitcoinAddressRecord)
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.derivationInfo
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.derivationPath
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.toString();
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publicKeys[address.pubKeyHash()] = PublicKeyWithDerivationPath(pubKeyHex, derivationPath);
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}
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utxos.add(
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UtxoWithAddress(
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utxo: BitcoinUtxo(
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txHash: utx.hash,
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value: BigInt.from(utx.value),
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vout: utx.vout,
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scriptType: BitcoinAddressUtils.getScriptType(address),
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),
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ownerDetails: UtxoAddressDetails(
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publicKey: pubKeyHex,
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address: address,
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),
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),
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);
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// sendAll continues for all inputs
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if (!sendAll) {
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bool amountIsAcquired = leftAmount <= 0;
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if ((inputsCount == null && amountIsAcquired) || inputsCount == i + 1) {
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break;
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}
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}
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}
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|
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if (utxos.isEmpty) {
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throw BitcoinTransactionNoInputsException();
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}
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|
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return ElectrumTxCreateUtxoDetails(
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availableInputs: availableInputs,
|
|
unconfirmedCoins: unconfirmedCoins,
|
|
utxos: utxos,
|
|
vinOutpoints: vinOutpoints,
|
|
inputPrivKeyInfos: inputPrivKeyInfos,
|
|
publicKeys: publicKeys,
|
|
allInputsAmount: allInputsAmount,
|
|
spendsUnconfirmedTX: spendsUnconfirmedTX,
|
|
);
|
|
}
|
|
|
|
Future<ElectrumEstimatedTx> estimateSendAllTx(
|
|
List<BitcoinOutput> outputs,
|
|
int feeRate, {
|
|
String? memo,
|
|
}) async {
|
|
final utxoDetails = createUTXOS(sendAll: true);
|
|
|
|
int fee = await calcFee(
|
|
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> estimateTxForAmount(
|
|
int credentialsAmount,
|
|
List<BitcoinOutput> outputs,
|
|
int feeRate, {
|
|
int? inputsCount,
|
|
String? memo,
|
|
bool? useUnconfirmed,
|
|
bool isFakeTx = false,
|
|
}) async {
|
|
// Attempting to send less than the dust limit
|
|
if (!isFakeTx && isBelowDust(credentialsAmount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
final utxoDetails = createUTXOS(
|
|
sendAll: false,
|
|
credentialsAmount: credentialsAmount,
|
|
inputsCount: inputsCount,
|
|
);
|
|
|
|
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 estimateTxForAmount(
|
|
credentialsAmount,
|
|
outputs,
|
|
feeRate,
|
|
inputsCount: utxoDetails.utxos.length + 1,
|
|
memo: memo,
|
|
isFakeTx: isFakeTx,
|
|
);
|
|
}
|
|
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
|
|
final changeAddress = await walletAddresses.getChangeAddress();
|
|
final address = RegexUtils.addressTypeFromStr(changeAddress.address, network);
|
|
outputs.add(BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(amountLeftForChangeAndFee),
|
|
isChange: true,
|
|
));
|
|
|
|
final changeDerivationPath =
|
|
(changeAddress as BitcoinAddressRecord).derivationInfo.derivationPath.toString();
|
|
utxoDetails.publicKeys[address.pubKeyHash()] =
|
|
PublicKeyWithDerivationPath('', changeDerivationPath);
|
|
|
|
int fee = calcFee(
|
|
utxos: utxoDetails.utxos,
|
|
outputs: outputs,
|
|
memo: memo,
|
|
feeRate: feeRate,
|
|
);
|
|
|
|
if (fee == 0) {
|
|
throw BitcoinTransactionNoFeeException();
|
|
}
|
|
|
|
int amount = credentialsAmount;
|
|
final lastOutput = outputs.last;
|
|
final amountLeftForChange = amountLeftForChangeAndFee - fee;
|
|
|
|
if (!isFakeTx && 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();
|
|
|
|
if (amountLeftForChange < 0) {
|
|
if (!spendingAllCoins) {
|
|
return estimateTxForAmount(
|
|
credentialsAmount,
|
|
outputs,
|
|
feeRate,
|
|
inputsCount: utxoDetails.utxos.length + 1,
|
|
memo: memo,
|
|
useUnconfirmed: useUnconfirmed ?? spendingAllConfirmedCoins,
|
|
isFakeTx: isFakeTx,
|
|
);
|
|
} 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,
|
|
);
|
|
}
|
|
}
|
|
|
|
int calcFee({
|
|
required List<UtxoWithAddress> utxos,
|
|
required List<BitcoinBaseOutput> outputs,
|
|
String? memo,
|
|
required int feeRate,
|
|
}) =>
|
|
feeRate *
|
|
BitcoinTransactionBuilder.estimateTransactionSize(
|
|
utxos: utxos,
|
|
outputs: outputs,
|
|
network: network,
|
|
memo: memo,
|
|
);
|
|
|
|
CreateTxData getCreateTxDataFromCredentials(Object credentials) {
|
|
final outputs = <BitcoinOutput>[];
|
|
final transactionCredentials = credentials as BitcoinTransactionCredentials;
|
|
final hasMultiDestination = transactionCredentials.outputs.length > 1;
|
|
final sendAll = !hasMultiDestination && transactionCredentials.outputs.first.sendAll;
|
|
final memo = transactionCredentials.outputs.first.memo;
|
|
|
|
int credentialsAmount = 0;
|
|
|
|
for (final out in transactionCredentials.outputs) {
|
|
final outputAmount = out.formattedCryptoAmount!;
|
|
|
|
if (!sendAll && isBelowDust(outputAmount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
if (hasMultiDestination) {
|
|
if (out.sendAll) {
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
}
|
|
|
|
credentialsAmount += outputAmount;
|
|
|
|
final address = RegexUtils.addressTypeFromStr(
|
|
out.isParsedAddress ? out.extractedAddress! : out.address,
|
|
network,
|
|
);
|
|
|
|
if (sendAll) {
|
|
outputs.add(
|
|
BitcoinOutput(
|
|
address: address,
|
|
// Send all: The value of the single existing output will be updated
|
|
// after estimating the Tx size and deducting the fee from the total to be sent
|
|
value: BigInt.from(0),
|
|
),
|
|
);
|
|
} else {
|
|
outputs.add(
|
|
BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(outputAmount),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
final feeRateInt = transactionCredentials.feeRate != null
|
|
? transactionCredentials.feeRate!
|
|
: feeRate(transactionCredentials.priority!);
|
|
|
|
return CreateTxData(
|
|
sendAll: sendAll,
|
|
amount: credentialsAmount,
|
|
outputs: outputs,
|
|
feeRate: feeRateInt,
|
|
memo: memo,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<PendingTransaction> createTransaction(Object credentials) async {
|
|
try {
|
|
final data = getCreateTxDataFromCredentials(credentials);
|
|
|
|
ElectrumEstimatedTx estimatedTx;
|
|
if (data.sendAll) {
|
|
estimatedTx = await estimateSendAllTx(
|
|
data.outputs,
|
|
data.feeRate,
|
|
memo: data.memo,
|
|
);
|
|
} else {
|
|
estimatedTx = await estimateTxForAmount(
|
|
data.amount,
|
|
data.outputs,
|
|
data.feeRate,
|
|
memo: data.memo,
|
|
);
|
|
}
|
|
|
|
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,
|
|
);
|
|
|
|
return 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();
|
|
});
|
|
}
|
|
|
|
BasedBitcoinTransacationBuilder txb;
|
|
if (network is BitcoinCashNetwork) {
|
|
txb = ForkedTransactionBuilder(
|
|
utxos: estimatedTx.utxos,
|
|
outputs: data.outputs,
|
|
fee: BigInt.from(estimatedTx.fee),
|
|
network: network,
|
|
memo: estimatedTx.memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: !estimatedTx.spendsUnconfirmedTX,
|
|
);
|
|
} else {
|
|
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);
|
|
}
|
|
});
|
|
|
|
return 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;
|
|
}
|
|
}
|
|
|
|
void setLedgerConnection(ledger.LedgerConnection connection) => throw UnimplementedError();
|
|
|
|
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 =>
|
|
throw UnimplementedError();
|
|
|
|
String toJSON() => json.encode({
|
|
'mnemonic': _mnemonic,
|
|
'xpub': xpub,
|
|
'passphrase': passphrase ?? '',
|
|
'walletAddresses': walletAddresses.toJson(),
|
|
'address_page_type': walletInfo.addressPageType == null
|
|
? SegwitAddressType.p2wpkh.toString()
|
|
: walletInfo.addressPageType.toString(),
|
|
'balance': balance[currency]?.toJSON(),
|
|
'derivationTypeIndex': walletInfo.derivationInfo?.derivationType?.index,
|
|
'derivationPath': walletInfo.derivationInfo?.derivationPath,
|
|
'unspent_coins': unspentCoins.map((e) => e.toJson()).toList(),
|
|
'didInitialSync': _didInitialSync,
|
|
});
|
|
|
|
int feeAmountForPriority(
|
|
TransactionPriority priority, {
|
|
required List<BitcoinAddressType> inputTypes,
|
|
required List<BitcoinAddressType> outputTypes,
|
|
String? memo,
|
|
bool enableRBF = true,
|
|
}) =>
|
|
feeRate(priority) *
|
|
estimatedTransactionSize(
|
|
inputTypes: inputTypes,
|
|
outputTypes: outputTypes,
|
|
memo: memo,
|
|
enableRBF: enableRBF,
|
|
);
|
|
|
|
int feeAmountWithFeeRate(
|
|
int feeRate, {
|
|
required List<BitcoinAddressType> inputTypes,
|
|
required List<BitcoinAddressType> outputTypes,
|
|
String? memo,
|
|
bool enableRBF = true,
|
|
}) =>
|
|
feeRate *
|
|
estimatedTransactionSize(
|
|
inputTypes: inputTypes,
|
|
outputTypes: outputTypes,
|
|
memo: memo,
|
|
enableRBF: enableRBF,
|
|
);
|
|
|
|
@override
|
|
Future<int> calculateEstimatedFee(
|
|
TransactionPriority priority, {
|
|
List<String> outputAddresses = const [],
|
|
String? memo,
|
|
bool enableRBF = true,
|
|
}) async {
|
|
return estimatedFeeForOutputsWithFeeRate(
|
|
feeRate: feeRate(priority),
|
|
outputAddresses: outputAddresses,
|
|
memo: memo,
|
|
enableRBF: enableRBF,
|
|
);
|
|
}
|
|
|
|
// Estimates the fee for paying to the given outputs
|
|
// using the wallet's available unspent coins as inputs
|
|
Future<int> estimatedFeeForOutputsWithFeeRate({
|
|
required int feeRate,
|
|
required List<String> outputAddresses,
|
|
String? memo,
|
|
bool enableRBF = true,
|
|
}) async {
|
|
final fakePublicKey = ECPrivate.random().getPublic();
|
|
final fakeOutputs = <BitcoinOutput>[];
|
|
final outputTypes =
|
|
outputAddresses.map((e) => BitcoinAddressUtils.addressTypeFromStr(e, network)).toList();
|
|
|
|
for (final outputType in outputTypes) {
|
|
late BitcoinBaseAddress address;
|
|
switch (outputType) {
|
|
case P2pkhAddressType.p2pkh:
|
|
address = fakePublicKey.toP2pkhAddress();
|
|
break;
|
|
case P2shAddressType.p2pkInP2sh:
|
|
address = fakePublicKey.toP2pkhInP2sh();
|
|
break;
|
|
case SegwitAddressType.p2wpkh:
|
|
address = fakePublicKey.toP2wpkhAddress();
|
|
break;
|
|
case P2shAddressType.p2pkhInP2sh:
|
|
address = fakePublicKey.toP2pkhInP2sh();
|
|
break;
|
|
case SegwitAddressType.p2wsh:
|
|
address = fakePublicKey.toP2wshAddress();
|
|
break;
|
|
case SegwitAddressType.p2tr:
|
|
address = fakePublicKey.toTaprootAddress();
|
|
break;
|
|
default:
|
|
throw const FormatException('Invalid output type');
|
|
}
|
|
|
|
fakeOutputs.add(BitcoinOutput(address: address, value: BigInt.from(0)));
|
|
}
|
|
|
|
final estimatedFakeTx = await estimateTxForAmount(
|
|
0,
|
|
fakeOutputs,
|
|
feeRate,
|
|
memo: memo,
|
|
isFakeTx: true,
|
|
);
|
|
final inputTypes = estimatedFakeTx.utxos.map((e) => e.ownerDetails.address.type).toList();
|
|
|
|
return feeAmountWithFeeRate(
|
|
feeRate,
|
|
inputTypes: inputTypes,
|
|
outputTypes: outputTypes,
|
|
memo: memo,
|
|
enableRBF: enableRBF,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<void> save() async {
|
|
if (!(await WalletKeysFile.hasKeysFile(walletInfo.name, walletInfo.type))) {
|
|
await saveKeysFile(_password, encryptionFileUtils);
|
|
await saveKeysFile(_password, encryptionFileUtils, true);
|
|
}
|
|
|
|
final path = await makePath();
|
|
await encryptionFileUtils.write(path: path, password: _password, data: toJSON());
|
|
await transactionHistory.save();
|
|
}
|
|
|
|
@override
|
|
Future<void> renameWalletFiles(String newWalletName) async {
|
|
final currentWalletPath = await pathForWallet(name: walletInfo.name, type: type);
|
|
final currentWalletFile = File(currentWalletPath);
|
|
|
|
final currentDirPath = await pathForWalletDir(name: walletInfo.name, type: type);
|
|
final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName');
|
|
|
|
// Copies current wallet files into new wallet name's dir and files
|
|
if (currentWalletFile.existsSync()) {
|
|
final newWalletPath = await pathForWallet(name: newWalletName, type: type);
|
|
await currentWalletFile.copy(newWalletPath);
|
|
}
|
|
if (currentTransactionsFile.existsSync()) {
|
|
final newDirPath = await pathForWalletDir(name: newWalletName, type: type);
|
|
await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName');
|
|
}
|
|
|
|
// Delete old name's dir and files
|
|
await Directory(currentDirPath).delete(recursive: true);
|
|
}
|
|
|
|
@override
|
|
Future<void> changePassword(String password) async {
|
|
_password = password;
|
|
await save();
|
|
await transactionHistory.changePassword(password);
|
|
}
|
|
|
|
@override
|
|
Future<void> rescan({required int height}) async {
|
|
throw UnimplementedError();
|
|
}
|
|
|
|
@override
|
|
Future<void> close({bool shouldCleanup = false}) async {
|
|
try {
|
|
_workerIsolate!.kill(priority: Isolate.immediate);
|
|
await _workerSubscription?.cancel();
|
|
receivePort?.close();
|
|
} catch (_) {}
|
|
_autoSaveTimer?.cancel();
|
|
_updateFeeRateTimer?.cancel();
|
|
}
|
|
|
|
@action
|
|
Future<void> updateAllUnspents() async {
|
|
workerSendPort!.send(
|
|
ElectrumWorkerListUnspentRequest(
|
|
scripthashes: walletAddresses.allScriptHashes.toList(),
|
|
).toJson(),
|
|
);
|
|
}
|
|
|
|
@action
|
|
void updateCoin(BitcoinUnspent 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;
|
|
} else {
|
|
addCoinInfo(coin);
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> onUnspentResponse(Map<String, List<ElectrumUtxo>> unspents) async {
|
|
final updatedUnspentCoins = <BitcoinUnspent>[];
|
|
|
|
await Future.wait(unspents.entries.map((entry) async {
|
|
final unspent = entry.value;
|
|
final scriptHash = entry.key;
|
|
|
|
final addressRecord = walletAddresses.allAddresses.firstWhereOrNull(
|
|
(element) => element.scriptHash == scriptHash,
|
|
);
|
|
|
|
if (addressRecord == null) {
|
|
return null;
|
|
}
|
|
|
|
await Future.wait(unspent.map((unspent) async {
|
|
final coin = BitcoinUnspent.fromJSON(addressRecord, unspent.toJson());
|
|
coin.isChange = addressRecord.isChange;
|
|
// TODO: \/
|
|
final tx = await fetchTransactionInfo(hash: coin.hash);
|
|
if (tx != null) {
|
|
coin.confirmations = tx.confirmations;
|
|
}
|
|
|
|
updatedUnspentCoins.add(coin);
|
|
}));
|
|
}));
|
|
|
|
unspentCoins.addAll(updatedUnspentCoins);
|
|
unspentCoins.forEach(updateCoin);
|
|
|
|
await refreshUnspentCoinsInfo();
|
|
}
|
|
|
|
@action
|
|
Future<void> addCoinInfo(BitcoinUnspent coin) async {
|
|
// Check if the coin is already in the unspentCoinsInfo for the wallet
|
|
final existingCoinInfo = unspentCoinsInfo.values
|
|
.firstWhereOrNull((element) => element.walletId == walletInfo.id && element == coin);
|
|
|
|
if (existingCoinInfo == null) {
|
|
final newInfo = UnspentCoinsInfo(
|
|
walletId: id,
|
|
hash: coin.hash,
|
|
isFrozen: coin.isFrozen,
|
|
isSending: coin.isSending,
|
|
noteRaw: coin.note,
|
|
address: coin.bitcoinAddressRecord.address,
|
|
value: coin.value,
|
|
vout: coin.vout,
|
|
isChange: coin.isChange,
|
|
);
|
|
|
|
await unspentCoinsInfo.add(newInfo);
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> refreshUnspentCoinsInfo() async {
|
|
try {
|
|
final List<dynamic> keys = [];
|
|
final currentWalletUnspentCoins =
|
|
unspentCoinsInfo.values.where((record) => record.walletId == id);
|
|
|
|
for (final element in currentWalletUnspentCoins) {
|
|
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");
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> onScripthashesStatusResponse(Map<String, dynamic>? result) async {
|
|
if (result != null) {
|
|
for (final entry in result.entries) {
|
|
final address = entry.key;
|
|
|
|
final scripthash = walletAddresses.allAddresses
|
|
.firstWhereOrNull((element) => element.address == address)
|
|
?.scriptHash;
|
|
|
|
if (scripthash != null) {
|
|
scripthashesWithStatus.add(scripthash);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> onHeadersResponse(ElectrumHeaderResponse response) async {
|
|
currentChainTip = response.height;
|
|
|
|
bool anyTxWasUpdated = false;
|
|
transactionHistory.transactions.values.forEach((tx) {
|
|
if (tx.height != null && tx.height! > 0) {
|
|
final newConfirmationsValue = currentChainTip! - tx.height! + 1;
|
|
|
|
if (tx.confirmations != newConfirmationsValue) {
|
|
tx.confirmations = newConfirmationsValue;
|
|
tx.isPending = tx.confirmations == 0;
|
|
anyTxWasUpdated = true;
|
|
}
|
|
}
|
|
});
|
|
|
|
if (anyTxWasUpdated) {
|
|
await save();
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> subscribeForHeaders([bool? wait]) async {
|
|
if (_chainTipListenerOn) return;
|
|
|
|
if (wait == true) {
|
|
await waitSendWorker(ElectrumWorkerHeadersSubscribeRequest());
|
|
} else {
|
|
workerSendPort!.send(ElectrumWorkerHeadersSubscribeRequest().toJson());
|
|
}
|
|
|
|
_chainTipListenerOn = true;
|
|
}
|
|
|
|
@action
|
|
Future<void> checkAddressesGap() async {
|
|
final newAddresses = <BitcoinAddressRecord>[];
|
|
final discoveredTypes = <BitcoinAddressType>[];
|
|
|
|
await Future.forEach(walletAddresses.allAddresses, (BitcoinAddressRecord addressRecord) async {
|
|
final isChange = addressRecord.isChange;
|
|
|
|
final matchingAddressList = walletAddresses
|
|
.getAddressesByType(addressRecord.type, isChange)
|
|
.where((element) =>
|
|
(element as BitcoinAddressRecord).cwDerivationType == addressRecord.cwDerivationType);
|
|
final totalMatchingAddresses = matchingAddressList.length;
|
|
|
|
final matchingGapLimit = (isChange
|
|
? ElectrumWalletAddressesBase.defaultChangeAddressesCount
|
|
: ElectrumWalletAddressesBase.defaultReceiveAddressesCount);
|
|
|
|
final isAddressUsedAboveGap =
|
|
addressRecord.index >= totalMatchingAddresses - matchingGapLimit;
|
|
|
|
if (isAddressUsedAboveGap && !discoveredTypes.contains(addressRecord.type)) {
|
|
discoveredTypes.add(addressRecord.type);
|
|
|
|
newAddresses.addAll(
|
|
await walletAddresses.discoverNewAddresses(
|
|
isChange: isChange,
|
|
derivationType: addressRecord.cwDerivationType,
|
|
addressType: addressRecord.type,
|
|
derivationInfo: BitcoinAddressUtils.getDerivationFromType(
|
|
addressRecord.type,
|
|
isElectrum: [
|
|
CWBitcoinDerivationType.electrum,
|
|
CWBitcoinDerivationType.old_electrum,
|
|
].contains(addressRecord.cwDerivationType),
|
|
),
|
|
),
|
|
);
|
|
walletAddresses.updateAdresses(newAddresses);
|
|
|
|
final newMatchingAddressList =
|
|
walletAddresses.getAddressesByType(addressRecord.type, isChange).where(
|
|
(element) =>
|
|
element.type == addressRecord.type &&
|
|
(element as BitcoinAddressRecord) == addressRecord.cwDerivationType,
|
|
);
|
|
printV(
|
|
"discovered ${newAddresses.length} new ${isChange ? "change" : "receive"} addresses");
|
|
printV(
|
|
"Of type ${addressRecord.type} and derivation type ${addressRecord.cwDerivationType}, new total: ${newMatchingAddressList.length}");
|
|
}
|
|
});
|
|
|
|
// if the initial sync has been done, fetch histories for the new discovered addresses
|
|
// if not, will update all again during startSync, with the new ones as well, to update dates
|
|
if (newAddresses.isNotEmpty && !_didInitialSync) {
|
|
await updateTransactions(newAddresses, true);
|
|
}
|
|
|
|
walletAddresses.updateHiddenAddresses();
|
|
|
|
await save();
|
|
}
|
|
|
|
@action
|
|
Future<void> onHistoriesResponse(ElectrumWorkerGetHistoryResponse response) async {
|
|
final histories = response.result;
|
|
if (histories.isNotEmpty) {
|
|
final addressesWithHistory = <BitcoinAddressRecord>[];
|
|
|
|
await Future.wait(histories.map((addressHistory) async {
|
|
final txs = addressHistory.txs;
|
|
|
|
if (txs.isNotEmpty) {
|
|
addressesWithHistory.add(addressHistory.addressRecord);
|
|
|
|
for (final tx in txs) {
|
|
transactionHistory.addOne(tx);
|
|
}
|
|
}
|
|
}));
|
|
|
|
if (addressesWithHistory.isNotEmpty) {
|
|
walletAddresses.updateAdresses(addressesWithHistory);
|
|
}
|
|
|
|
await save();
|
|
} else if (response.completed) {
|
|
// checkAddressesGap();
|
|
}
|
|
}
|
|
|
|
Future<String?> canReplaceByFee(ElectrumTransactionInfo tx) async {
|
|
try {
|
|
final bundle = await getTransactionExpanded(hash: tx.txHash);
|
|
_updateInputsAndOutputs(tx, bundle);
|
|
if (bundle.confirmations > 0) return null;
|
|
return bundle.originalTransaction.canReplaceByFee ? bundle.originalTransaction.toHex() : null;
|
|
} catch (e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
Future<bool> isChangeSufficientForFee(String txId, int newFee) async {
|
|
final bundle = await getTransactionExpanded(hash: txId);
|
|
final outputs = bundle.originalTransaction.outputs;
|
|
|
|
final ownAddresses = walletAddresses.allAddresses.map((addr) => addr.address).toSet();
|
|
|
|
final receiverAmount = outputs
|
|
.where(
|
|
(output) => !ownAddresses.contains(
|
|
BitcoinAddressUtils.addressFromOutputScript(output.scriptPubKey, network),
|
|
),
|
|
)
|
|
.fold<int>(0, (sum, output) => sum + output.amount.toInt());
|
|
|
|
if (receiverAmount == 0) {
|
|
throw Exception("Receiver output not found.");
|
|
}
|
|
|
|
final availableInputs = unspentCoins.where((utxo) => utxo.isSending && !utxo.isFrozen).toList();
|
|
int totalBalance = availableInputs.fold<int>(
|
|
0, (previousValue, element) => previousValue + element.value.toInt());
|
|
|
|
int allInputsAmount = 0;
|
|
for (int i = 0; i < bundle.originalTransaction.inputs.length; i++) {
|
|
final input = bundle.originalTransaction.inputs[i];
|
|
final inputTransaction = bundle.ins[i];
|
|
final vout = input.txIndex;
|
|
final outTransaction = inputTransaction.outputs[vout];
|
|
allInputsAmount += outTransaction.amount.toInt();
|
|
}
|
|
|
|
int totalOutAmount = bundle.originalTransaction.outputs
|
|
.fold<int>(0, (previousValue, element) => previousValue + element.amount.toInt());
|
|
var currentFee = allInputsAmount - totalOutAmount;
|
|
|
|
int remainingFee = (newFee - currentFee > 0) ? newFee - currentFee : newFee;
|
|
return totalBalance - receiverAmount - remainingFee >= dustAmount;
|
|
}
|
|
|
|
Future<PendingBitcoinTransaction> replaceByFee(String hash, int newFee) async {
|
|
try {
|
|
final bundle = await getTransactionExpanded(hash: hash);
|
|
|
|
final utxos = <UtxoWithAddress>[];
|
|
final outputs = <BitcoinOutput>[];
|
|
List<ECPrivate> privateKeys = [];
|
|
|
|
var allInputsAmount = 0;
|
|
String? memo;
|
|
|
|
// Add original inputs
|
|
for (var i = 0; i < bundle.originalTransaction.inputs.length; i++) {
|
|
final input = bundle.originalTransaction.inputs[i];
|
|
final inputTransaction = bundle.ins[i];
|
|
final vout = input.txIndex;
|
|
final outTransaction = inputTransaction.outputs[vout];
|
|
final address =
|
|
BitcoinAddressUtils.addressFromOutputScript(outTransaction.scriptPubKey, network);
|
|
allInputsAmount += outTransaction.amount.toInt();
|
|
|
|
final addressRecord =
|
|
walletAddresses.allAddresses.firstWhere((element) => element.address == address);
|
|
final btcAddress = RegexUtils.addressTypeFromStr(addressRecord.address, network);
|
|
final path = addressRecord.derivationInfo.derivationPath
|
|
.addElem(Bip32KeyIndex(
|
|
BitcoinAddressUtils.getAccountFromChange(addressRecord.isChange),
|
|
))
|
|
.addElem(Bip32KeyIndex(addressRecord.index));
|
|
|
|
final privkey = ECPrivate.fromBip32(bip32: hdWallet.derive(path));
|
|
|
|
privateKeys.add(privkey);
|
|
|
|
utxos.add(
|
|
UtxoWithAddress(
|
|
utxo: BitcoinUtxo(
|
|
txHash: input.txId,
|
|
value: outTransaction.amount,
|
|
vout: vout,
|
|
scriptType: BitcoinAddressUtils.getScriptType(btcAddress),
|
|
),
|
|
ownerDetails:
|
|
UtxoAddressDetails(publicKey: privkey.getPublic().toHex(), address: btcAddress),
|
|
),
|
|
);
|
|
}
|
|
|
|
// Add original outputs
|
|
for (final out in bundle.originalTransaction.outputs) {
|
|
final script = out.scriptPubKey.script;
|
|
if (script.contains('OP_RETURN') && memo == null) {
|
|
final index = script.indexOf('OP_RETURN');
|
|
if (index + 1 <= script.length) {
|
|
try {
|
|
final opReturnData = script[index + 1].toString();
|
|
memo = StringUtils.decode(BytesUtils.fromHexString(opReturnData));
|
|
continue;
|
|
} catch (_) {
|
|
throw Exception('Cannot decode OP_RETURN data');
|
|
}
|
|
}
|
|
}
|
|
|
|
final address = BitcoinAddressUtils.addressFromOutputScript(out.scriptPubKey, network);
|
|
final btcAddress = RegexUtils.addressTypeFromStr(address, network);
|
|
outputs.add(BitcoinOutput(address: btcAddress, value: BigInt.from(out.amount.toInt())));
|
|
}
|
|
|
|
// Calculate the total amount and fees
|
|
int totalOutAmount =
|
|
outputs.fold<int>(0, (previousValue, output) => previousValue + output.value.toInt());
|
|
int currentFee = allInputsAmount - totalOutAmount;
|
|
int remainingFee = newFee - currentFee;
|
|
|
|
if (remainingFee <= 0) {
|
|
throw Exception("New fee must be higher than the current fee.");
|
|
}
|
|
|
|
// Deduct fee from change outputs first, if possible
|
|
if (remainingFee > 0) {
|
|
final changeAddresses = walletAddresses.allAddresses.where((element) => element.isHidden);
|
|
for (int i = outputs.length - 1; i >= 0; i--) {
|
|
final output = outputs[i];
|
|
final isChange = changeAddresses
|
|
.any((element) => element.address == output.address.toAddress(network));
|
|
|
|
if (isChange) {
|
|
int outputAmount = output.value.toInt();
|
|
if (outputAmount > dustAmount) {
|
|
int deduction = (outputAmount - dustAmount >= remainingFee)
|
|
? remainingFee
|
|
: outputAmount - dustAmount;
|
|
outputs[i] = BitcoinOutput(
|
|
address: output.address, value: BigInt.from(outputAmount - deduction));
|
|
remainingFee -= deduction;
|
|
|
|
if (remainingFee <= 0) break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If still not enough, add UTXOs until the fee is covered
|
|
if (remainingFee > 0) {
|
|
final unusedUtxos = unspentCoins
|
|
.where((utxo) => utxo.isSending && !utxo.isFrozen && utxo.confirmations! > 0)
|
|
.toList();
|
|
|
|
for (final utxo in unusedUtxos) {
|
|
final address = RegexUtils.addressTypeFromStr(utxo.address, network);
|
|
final privkey = ECPrivate.fromBip32(bip32: hdWallet);
|
|
privateKeys.add(privkey);
|
|
|
|
utxos.add(
|
|
UtxoWithAddress(
|
|
utxo: BitcoinUtxo(
|
|
txHash: utxo.hash,
|
|
value: BigInt.from(utxo.value),
|
|
vout: utxo.vout,
|
|
scriptType: BitcoinAddressUtils.getScriptType(address)),
|
|
ownerDetails:
|
|
UtxoAddressDetails(publicKey: privkey.getPublic().toHex(), address: address),
|
|
),
|
|
);
|
|
|
|
allInputsAmount += utxo.value;
|
|
remainingFee -= utxo.value;
|
|
|
|
if (remainingFee < 0) {
|
|
final changeOutput = outputs.firstWhereOrNull((output) => walletAddresses.allAddresses
|
|
.any((addr) => addr.address == output.address.toAddress(network)));
|
|
if (changeOutput != null) {
|
|
final newValue = changeOutput.value.toInt() + (-remainingFee);
|
|
outputs[outputs.indexOf(changeOutput)] =
|
|
BitcoinOutput(address: changeOutput.address, value: BigInt.from(newValue));
|
|
} else {
|
|
final changeAddress = await walletAddresses.getChangeAddress();
|
|
outputs.add(BitcoinOutput(
|
|
address: RegexUtils.addressTypeFromStr(changeAddress.address, network),
|
|
value: BigInt.from(-remainingFee)));
|
|
}
|
|
|
|
remainingFee = 0;
|
|
break;
|
|
}
|
|
|
|
if (remainingFee <= 0) break;
|
|
}
|
|
}
|
|
|
|
// Deduct from the receiver's output if remaining fee is still greater than 0
|
|
if (remainingFee > 0) {
|
|
for (int i = 0; i < outputs.length; i++) {
|
|
final output = outputs[i];
|
|
int outputAmount = output.value.toInt();
|
|
|
|
if (outputAmount > dustAmount) {
|
|
int deduction = (outputAmount - dustAmount >= remainingFee)
|
|
? remainingFee
|
|
: outputAmount - dustAmount;
|
|
|
|
outputs[i] = BitcoinOutput(
|
|
address: output.address, value: BigInt.from(outputAmount - deduction));
|
|
remainingFee -= deduction;
|
|
|
|
if (remainingFee <= 0) break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Final check if the remaining fee couldn't be deducted
|
|
if (remainingFee > 0) {
|
|
throw Exception("Not enough funds to cover the fee.");
|
|
}
|
|
|
|
// Identify all change outputs
|
|
final changeAddresses = walletAddresses.allChangeAddresses;
|
|
final List<BitcoinOutput> changeOutputs = outputs
|
|
.where((output) => changeAddresses
|
|
.any((element) => element.address == output.address.toAddress(network)))
|
|
.toList();
|
|
|
|
int totalChangeAmount =
|
|
changeOutputs.fold<int>(0, (sum, output) => sum + output.value.toInt());
|
|
|
|
// The final amount that the receiver will receive
|
|
int sendingAmount = allInputsAmount - newFee - totalChangeAmount;
|
|
|
|
final txb = BitcoinTransactionBuilder(
|
|
utxos: utxos,
|
|
outputs: outputs,
|
|
fee: BigInt.from(newFee),
|
|
network: network,
|
|
memo: memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: true,
|
|
);
|
|
|
|
final transaction = txb.buildTransaction((txDigest, utxo, publicKey, sighash) {
|
|
final key =
|
|
privateKeys.firstWhereOrNull((element) => element.getPublic().toHex() == publicKey);
|
|
if (key == null) {
|
|
throw Exception("Cannot find private key");
|
|
}
|
|
|
|
if (utxo.utxo.isP2tr) {
|
|
return key.signTapRoot(txDigest, sighash: sighash);
|
|
} else {
|
|
return key.signInput(txDigest, sigHash: sighash);
|
|
}
|
|
});
|
|
|
|
return PendingBitcoinTransaction(
|
|
transaction,
|
|
type,
|
|
sendWorker: waitSendWorker,
|
|
amount: sendingAmount,
|
|
fee: newFee,
|
|
hasChange: changeOutputs.isNotEmpty,
|
|
feeRate: newFee.toString(),
|
|
)..addListener((transaction) async {
|
|
transactionHistory.transactions.values.forEach((tx) {
|
|
if (tx.id == hash) {
|
|
tx.isReplaced = true;
|
|
tx.isPending = false;
|
|
transactionHistory.addOne(tx);
|
|
}
|
|
});
|
|
transactionHistory.addOne(transaction);
|
|
await updateBalance();
|
|
await updateAllUnspents();
|
|
});
|
|
} catch (e) {
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
Future<String> getTransactionHex({required String hash}) async {
|
|
return await waitSendWorker(
|
|
ElectrumWorkerTxHexRequest(txHash: hash, currentChainTip: currentChainTip!),
|
|
) as String;
|
|
}
|
|
|
|
Future<ElectrumTransactionBundle> getTransactionExpanded({required String hash}) async {
|
|
return await waitSendWorker(
|
|
ElectrumWorkerTxExpandedRequest(txHash: hash, currentChainTip: currentChainTip!),
|
|
) as ElectrumTransactionBundle;
|
|
}
|
|
|
|
Future<ElectrumTransactionInfo?> fetchTransactionInfo({required String hash, int? height}) async {
|
|
try {
|
|
return ElectrumTransactionInfo.fromElectrumBundle(
|
|
await getTransactionExpanded(hash: hash),
|
|
walletInfo.type,
|
|
network,
|
|
addresses: walletAddresses.allAddresses.map((e) => e.address).toSet(),
|
|
height: height,
|
|
);
|
|
} catch (_) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
@override
|
|
@action
|
|
Future<Map<String, ElectrumTransactionInfo>> fetchTransactions() async {
|
|
throw UnimplementedError();
|
|
}
|
|
|
|
Future<ElectrumWorkerGetHistoryRequest> getUpdateTransactionsRequest([
|
|
List<BitcoinAddressRecord>? addresses,
|
|
]) async {
|
|
return ElectrumWorkerGetHistoryRequest(
|
|
addresses: addresses ?? walletAddresses.allAddresses.toList(),
|
|
storedTxs: transactionHistory.transactions.values.toList(),
|
|
walletType: type,
|
|
// If we still don't have currentChainTip, txs will still be fetched but shown
|
|
// with confirmations as 0 but will be auto fixed on onHeadersResponse
|
|
chainTip: currentChainTip ?? -1,
|
|
network: network,
|
|
);
|
|
}
|
|
|
|
Future<void> updateTransactions([List<BitcoinAddressRecord>? addresses, bool? wait]) async {
|
|
if (wait == true) {
|
|
return waitSendWorker(await getUpdateTransactionsRequest(addresses));
|
|
} else {
|
|
workerSendPort!.send((await getUpdateTransactionsRequest(addresses)).toJson());
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> subscribeForStatuses([bool? wait]) async {
|
|
Map<String, String> scripthashByAddress = {};
|
|
walletAddresses.allAddresses.forEach((addressRecord) {
|
|
scripthashByAddress[addressRecord.address] = addressRecord.scriptHash;
|
|
});
|
|
|
|
if (wait == true) {
|
|
await waitSendWorker(
|
|
ElectrumWorkerScripthashesSubscribeRequest(
|
|
scripthashByAddress: scripthashByAddress,
|
|
),
|
|
);
|
|
} else {
|
|
workerSendPort!.send(
|
|
ElectrumWorkerScripthashesSubscribeRequest(
|
|
scripthashByAddress: scripthashByAddress,
|
|
).toJson(),
|
|
);
|
|
}
|
|
|
|
scripthashesListening.addAll(scripthashByAddress.values);
|
|
}
|
|
|
|
@action
|
|
void onBalanceResponse(ElectrumBalance balanceResult) {
|
|
var totalFrozen = 0;
|
|
var totalConfirmed = balanceResult.confirmed;
|
|
var totalUnconfirmed = balanceResult.unconfirmed;
|
|
|
|
unspentCoins.forInfo(unspentCoinsInfo.values).forEach((unspentCoinInfo) {
|
|
if (unspentCoinInfo.isFrozen) {
|
|
totalFrozen += unspentCoinInfo.value;
|
|
}
|
|
});
|
|
|
|
balance[currency] = ElectrumBalance(
|
|
confirmed: totalConfirmed,
|
|
unconfirmed: totalUnconfirmed,
|
|
frozen: totalFrozen,
|
|
);
|
|
}
|
|
|
|
@action
|
|
Future<void> updateBalance([Set<String>? scripthashes, bool? wait]) async {
|
|
scripthashes ??= walletAddresses.allScriptHashes.toSet();
|
|
|
|
if (wait == true) {
|
|
return waitSendWorker(
|
|
ElectrumWorkerGetBalanceRequest(scripthashes: scripthashes),
|
|
);
|
|
} else {
|
|
workerSendPort!.send(
|
|
ElectrumWorkerGetBalanceRequest(scripthashes: scripthashes).toJson(),
|
|
);
|
|
}
|
|
}
|
|
|
|
@override
|
|
void setExceptionHandler(void Function(FlutterErrorDetails) onError) => _onError = onError;
|
|
|
|
Future<String> signMessage(String message, {String? address = null}) async {
|
|
final record = walletAddresses.getFromAddresses(address!);
|
|
|
|
final path = Bip32PathParser.parse(walletInfo.derivationInfo!.derivationPath!)
|
|
.addElem(
|
|
Bip32KeyIndex(BitcoinAddressUtils.getAccountFromChange(record.isChange)),
|
|
)
|
|
.addElem(Bip32KeyIndex(record.index));
|
|
|
|
final priv = ECPrivate.fromHex(hdWallet.derive(path).privateKey.toHex());
|
|
|
|
final hexEncoded =
|
|
priv.signMessage(StringUtils.encode(message), messagePrefix: SIGN_MESSAGE_PREFIX);
|
|
final decodedSig = hex.decode(hexEncoded);
|
|
return base64Encode(decodedSig);
|
|
}
|
|
|
|
@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 = BytesUtils.fromHexString(signature);
|
|
}
|
|
|
|
if (sigDecodedBytes.length != 64 && sigDecodedBytes.length != 65) {
|
|
throw ArgumentException(
|
|
"signature must be 64 bytes without recover-id or 65 bytes with recover-id");
|
|
}
|
|
|
|
final messageHash = QuickCrypto.sha256Hash(
|
|
BitcoinSignerUtils.magicMessage(StringUtils.encode(message), SIGN_MESSAGE_PREFIX));
|
|
|
|
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;
|
|
}
|
|
|
|
@action
|
|
void _onConnectionStatusChange(ConnectionStatus status) {
|
|
switch (status) {
|
|
case ConnectionStatus.connected:
|
|
if (syncStatus is NotConnectedSyncStatus ||
|
|
syncStatus is LostConnectionSyncStatus ||
|
|
syncStatus is ConnectingSyncStatus) {
|
|
syncStatus = ConnectedSyncStatus();
|
|
}
|
|
|
|
break;
|
|
case ConnectionStatus.disconnected:
|
|
if (syncStatus is! NotConnectedSyncStatus &&
|
|
syncStatus is! ConnectingSyncStatus &&
|
|
syncStatus is! SynchronizingSyncStatus) {
|
|
syncStatus = NotConnectedSyncStatus();
|
|
}
|
|
break;
|
|
case ConnectionStatus.failed:
|
|
if (syncStatus is! LostConnectionSyncStatus) {
|
|
syncStatus = LostConnectionSyncStatus();
|
|
}
|
|
break;
|
|
case ConnectionStatus.connecting:
|
|
if (syncStatus is! ConnectingSyncStatus) {
|
|
syncStatus = ConnectingSyncStatus();
|
|
}
|
|
break;
|
|
default:
|
|
}
|
|
}
|
|
|
|
@action
|
|
void syncStatusReaction(SyncStatus syncStatus) {
|
|
final isDisconnectedStatus =
|
|
syncStatus is NotConnectedSyncStatus || syncStatus is LostConnectionSyncStatus;
|
|
|
|
if (syncStatus is ConnectingSyncStatus || isDisconnectedStatus) {
|
|
// Needs to re-subscribe to all scripthashes when reconnected
|
|
scripthashesListening = [];
|
|
_chainTipListenerOn = false;
|
|
}
|
|
|
|
if (isDisconnectedStatus) {
|
|
if (_isTryingToConnect) return;
|
|
|
|
_isTryingToConnect = true;
|
|
|
|
Timer(Duration(seconds: 5), () {
|
|
if (this.syncStatus is NotConnectedSyncStatus ||
|
|
this.syncStatus is LostConnectionSyncStatus) {
|
|
if (node == null) return;
|
|
|
|
connectToNode(node: this.node!);
|
|
}
|
|
_isTryingToConnect = false;
|
|
});
|
|
}
|
|
}
|
|
|
|
void _updateInputsAndOutputs(ElectrumTransactionInfo tx, ElectrumTransactionBundle bundle) {
|
|
tx.inputAddresses = tx.inputAddresses?.where((address) => address.isNotEmpty).toList();
|
|
|
|
if (tx.inputAddresses == null ||
|
|
tx.inputAddresses!.isEmpty ||
|
|
tx.outputAddresses == null ||
|
|
tx.outputAddresses!.isEmpty) {
|
|
List<String> inputAddresses = [];
|
|
List<String> outputAddresses = [];
|
|
|
|
for (int i = 0; i < bundle.originalTransaction.inputs.length; i++) {
|
|
final input = bundle.originalTransaction.inputs[i];
|
|
final inputTransaction = bundle.ins[i];
|
|
final vout = input.txIndex;
|
|
final outTransaction = inputTransaction.outputs[vout];
|
|
final address =
|
|
BitcoinAddressUtils.addressFromOutputScript(outTransaction.scriptPubKey, network);
|
|
|
|
if (address.isNotEmpty) inputAddresses.add(address);
|
|
}
|
|
|
|
for (int i = 0; i < bundle.originalTransaction.outputs.length; i++) {
|
|
final out = bundle.originalTransaction.outputs[i];
|
|
final address = BitcoinAddressUtils.addressFromOutputScript(out.scriptPubKey, network);
|
|
|
|
if (address.isNotEmpty) outputAddresses.add(address);
|
|
|
|
// Check if the script contains OP_RETURN
|
|
final script = out.scriptPubKey.script;
|
|
if (script.contains('OP_RETURN')) {
|
|
final index = script.indexOf('OP_RETURN');
|
|
if (index + 1 <= script.length) {
|
|
try {
|
|
final opReturnData = script[index + 1].toString();
|
|
final decodedString = StringUtils.decode(BytesUtils.fromHexString(opReturnData));
|
|
outputAddresses.add('OP_RETURN:$decodedString');
|
|
} catch (_) {
|
|
outputAddresses.add('OP_RETURN:');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
tx.inputAddresses = inputAddresses;
|
|
tx.outputAddresses = outputAddresses;
|
|
|
|
transactionHistory.addOne(tx);
|
|
}
|
|
}
|
|
}
|
|
|
|
class ElectrumEstimatedTx {
|
|
ElectrumEstimatedTx({
|
|
required this.utxos,
|
|
required this.inputPrivKeyInfos,
|
|
required this.publicKeys,
|
|
required this.fee,
|
|
required this.amount,
|
|
required this.hasChange,
|
|
required this.isSendAll,
|
|
this.memo,
|
|
required this.spendsUnconfirmedTX,
|
|
});
|
|
|
|
final List<UtxoWithAddress> utxos;
|
|
final List<ECPrivateInfo> inputPrivKeyInfos;
|
|
final Map<String, PublicKeyWithDerivationPath> publicKeys; // PubKey to derivationPath
|
|
final int fee;
|
|
final int amount;
|
|
|
|
final bool hasChange;
|
|
final bool isSendAll;
|
|
final String? memo;
|
|
final bool spendsUnconfirmedTX;
|
|
}
|
|
|
|
class PublicKeyWithDerivationPath {
|
|
const PublicKeyWithDerivationPath(this.publicKey, this.derivationPath);
|
|
|
|
final String derivationPath;
|
|
final String publicKey;
|
|
}
|
|
|
|
class ElectrumTxCreateUtxoDetails {
|
|
final List<BitcoinUnspent> availableInputs;
|
|
final List<BitcoinUnspent> unconfirmedCoins;
|
|
final List<UtxoWithAddress> utxos;
|
|
final List<Outpoint> vinOutpoints;
|
|
final List<ECPrivateInfo> inputPrivKeyInfos;
|
|
final Map<String, PublicKeyWithDerivationPath> publicKeys; // PubKey to derivationPath
|
|
final int allInputsAmount;
|
|
final bool spendsUnconfirmedTX;
|
|
|
|
ElectrumTxCreateUtxoDetails({
|
|
required this.availableInputs,
|
|
required this.unconfirmedCoins,
|
|
required this.utxos,
|
|
required this.vinOutpoints,
|
|
required this.inputPrivKeyInfos,
|
|
required this.publicKeys,
|
|
required this.allInputsAmount,
|
|
required this.spendsUnconfirmedTX,
|
|
});
|
|
}
|
|
|
|
class ElectrumUnspentCoins extends ObservableSet<BitcoinUnspent> {
|
|
ElectrumUnspentCoins() : super();
|
|
|
|
static ElectrumUnspentCoins of(Iterable<BitcoinUnspent> unspentCoins) {
|
|
final coins = ElectrumUnspentCoins();
|
|
coins.addAll(unspentCoins);
|
|
return coins;
|
|
}
|
|
|
|
List<UnspentCoinsInfo> forInfo(Iterable<UnspentCoinsInfo> unspentCoinsInfo) {
|
|
return unspentCoinsInfo.where((element) {
|
|
final info = this.firstWhereOrNull(
|
|
(info) =>
|
|
element.hash == info.hash &&
|
|
element.vout == info.vout &&
|
|
element.address == info.bitcoinAddressRecord.address &&
|
|
element.value == info.value,
|
|
);
|
|
|
|
return info != null;
|
|
}).toList();
|
|
}
|
|
|
|
List<BitcoinUnspent> fromInfo(Iterable<UnspentCoinsInfo> unspentCoinsInfo) {
|
|
return this.where((element) {
|
|
final info = unspentCoinsInfo.firstWhereOrNull(
|
|
(info) =>
|
|
element.hash == info.hash &&
|
|
element.vout == info.vout &&
|
|
element.bitcoinAddressRecord.address == info.address &&
|
|
element.value == info.value,
|
|
);
|
|
|
|
return info != null;
|
|
}).toList();
|
|
}
|
|
}
|
|
|
|
class CreateTxData {
|
|
final int amount;
|
|
final int feeRate;
|
|
final List<BitcoinOutput> outputs;
|
|
final bool sendAll;
|
|
final String? memo;
|
|
|
|
CreateTxData({
|
|
required this.amount,
|
|
required this.feeRate,
|
|
required this.outputs,
|
|
required this.sendAll,
|
|
required this.memo,
|
|
});
|
|
}
|