mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-11-06 04:17:42 +00:00
1142 lines
34 KiB
Dart
1142 lines
34 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'dart:typed_data';
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import 'package:bitcoindart/bitcoindart.dart' as bitcoindart;
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import 'package:decimal/decimal.dart';
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import 'package:isar/isar.dart';
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import 'package:lelantus/lelantus.dart' as lelantus;
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import 'package:stackwallet/models/balance.dart';
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import 'package:stackwallet/models/isar/models/isar_models.dart';
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import 'package:stackwallet/models/lelantus_fee_data.dart';
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import 'package:stackwallet/utilities/amount/amount.dart';
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import 'package:stackwallet/utilities/enums/derive_path_type_enum.dart';
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import 'package:stackwallet/utilities/extensions/impl/uint8_list.dart';
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import 'package:stackwallet/utilities/format.dart';
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import 'package:stackwallet/utilities/logger.dart';
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import 'package:stackwallet/wallets/api/lelantus_ffi_wrapper.dart';
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import 'package:stackwallet/wallets/crypto_currency/crypto_currency.dart';
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import 'package:stackwallet/wallets/models/tx_data.dart';
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import 'package:stackwallet/wallets/wallet/intermediate/bip39_hd_wallet.dart';
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import 'package:stackwallet/wallets/wallet/wallet_mixin_interfaces/electrumx_interface.dart';
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import 'package:tuple/tuple.dart';
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mixin LelantusInterface on Bip39HDWallet, ElectrumXInterface {
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Future<Amount> estimateFeeForLelantus(Amount amount) async {
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final lelantusEntries = await _getLelantusEntry();
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int spendAmount = amount.raw.toInt();
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if (spendAmount == 0 || lelantusEntries.isEmpty) {
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return Amount(
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rawValue: BigInt.from(LelantusFeeData(0, 0, []).fee),
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fractionDigits: cryptoCurrency.fractionDigits,
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);
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}
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final result = await LelantusFfiWrapper.estimateJoinSplitFee(
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spendAmount: amount,
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subtractFeeFromAmount: true,
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lelantusEntries: lelantusEntries,
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isTestNet: cryptoCurrency.network == CryptoCurrencyNetwork.test,
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);
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return Amount(
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rawValue: BigInt.from(result.fee),
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fractionDigits: cryptoCurrency.fractionDigits,
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);
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}
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Future<List<lelantus.DartLelantusEntry>> _getLelantusEntry() async {
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final List<LelantusCoin> lelantusCoins = await mainDB.isar.lelantusCoins
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.where()
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.walletIdEqualTo(walletId)
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.filter()
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.isUsedEqualTo(false)
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.not()
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.group((q) => q
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.valueEqualTo("0")
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.or()
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.anonymitySetIdEqualTo(LelantusFfiWrapper.ANONYMITY_SET_EMPTY_ID))
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.findAll();
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final root = await getRootHDNode();
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final waitLelantusEntries = lelantusCoins.map((coin) async {
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final derivePath = cryptoCurrency.constructDerivePath(
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derivePathType: DerivePathType.bip44,
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chain: LelantusFfiWrapper.MINT_INDEX,
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index: coin.mintIndex,
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);
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try {
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final keyPair = root.derivePath(derivePath);
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final String privateKey = keyPair.privateKey.data.toHex;
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return lelantus.DartLelantusEntry(
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coin.isUsed ? 1 : 0,
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0,
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coin.anonymitySetId,
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int.parse(coin.value),
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coin.mintIndex,
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privateKey,
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);
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} catch (_) {
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Logging.instance.log("error bad key", level: LogLevel.Error);
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return lelantus.DartLelantusEntry(1, 0, 0, 0, 0, '');
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}
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}).toList();
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final lelantusEntries = await Future.wait(waitLelantusEntries);
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if (lelantusEntries.isNotEmpty) {
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// should be redundant as _getUnspentCoins() should
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// already remove all where value=0
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lelantusEntries.removeWhere((element) => element.amount == 0);
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}
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return lelantusEntries;
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}
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Future<TxData> prepareSendLelantus({
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required TxData txData,
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}) async {
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if (txData.recipients!.length != 1) {
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throw Exception(
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"Lelantus send requires a single recipient",
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);
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}
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if (txData.recipients!.first.amount.raw >
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BigInt.from(LelantusFfiWrapper.MINT_LIMIT)) {
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throw Exception(
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"Lelantus sends of more than 5001 are currently disabled",
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);
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}
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try {
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// check for send all
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bool isSendAll = false;
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final balance = info.cachedBalanceSecondary.spendable;
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if (txData.recipients!.first.amount == balance) {
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// print("is send all");
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isSendAll = true;
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}
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final lastUsedIndex =
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await mainDB.getHighestUsedMintIndex(walletId: walletId);
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final nextFreeMintIndex = (lastUsedIndex ?? 0) + 1;
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final root = await getRootHDNode();
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final derivePath = cryptoCurrency.constructDerivePath(
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derivePathType: DerivePathType.bip44,
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chain: 0,
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index: 0,
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);
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final partialDerivationPath = derivePath.substring(
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0,
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derivePath.length - 3,
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);
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final result = await LelantusFfiWrapper.createJoinSplitTransaction(
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txData: txData,
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subtractFeeFromAmount: isSendAll,
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nextFreeMintIndex: nextFreeMintIndex,
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locktime: await chainHeight,
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lelantusEntries: await _getLelantusEntry(),
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anonymitySets: await fetchAnonymitySets(),
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cryptoCurrency: cryptoCurrency,
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partialDerivationPath: partialDerivationPath,
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hexRootPrivateKey: root.privateKey.data.toHex,
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chaincode: root.chaincode,
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);
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Logging.instance.log("prepared fee: ${result.fee}", level: LogLevel.Info);
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Logging.instance
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.log("prepared vSize: ${result.vSize}", level: LogLevel.Info);
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// fee should never be less than vSize sanity check
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if (result.fee!.raw.toInt() < result.vSize!) {
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throw Exception(
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"Error in fee calculation: Transaction fee cannot be less than vSize");
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}
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return result;
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} catch (e, s) {
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Logging.instance.log("Exception rethrown in firo prepareSend(): $e\n$s",
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level: LogLevel.Error);
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rethrow;
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}
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}
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Future<TxData> confirmSendLelantus({
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required TxData txData,
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}) async {
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final latestSetId = await electrumXClient.getLelantusLatestCoinId();
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final txid = await electrumXClient.broadcastTransaction(
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rawTx: txData.raw!,
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);
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assert(txid == txData.txid!);
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final lastUsedIndex =
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await mainDB.getHighestUsedMintIndex(walletId: walletId);
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final nextFreeMintIndex = (lastUsedIndex ?? 0) + 1;
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if (txData.spendCoinIndexes != null) {
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// This is a joinsplit
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final spentCoinIndexes = txData.spendCoinIndexes!;
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final List<LelantusCoin> updatedCoins = [];
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// Update all of the coins that have been spent.
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for (final index in spentCoinIndexes) {
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final possibleCoin = await mainDB.isar.lelantusCoins
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.where()
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.mintIndexWalletIdEqualTo(index, walletId)
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.findFirst();
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if (possibleCoin != null) {
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updatedCoins.add(possibleCoin.copyWith(isUsed: true));
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}
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}
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// if a jmint was made add it to the unspent coin index
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final jmint = LelantusCoin(
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walletId: walletId,
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mintIndex: nextFreeMintIndex,
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value: (txData.jMintValue ?? 0).toString(),
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txid: txid,
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anonymitySetId: latestSetId,
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isUsed: false,
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isJMint: true,
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otherData: null,
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);
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try {
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await mainDB.isar.writeTxn(() async {
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for (final c in updatedCoins) {
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await mainDB.isar.lelantusCoins.deleteByMintIndexWalletId(
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c.mintIndex,
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c.walletId,
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);
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}
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await mainDB.isar.lelantusCoins.putAll(updatedCoins);
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await mainDB.isar.lelantusCoins.put(jmint);
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});
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} catch (e, s) {
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Logging.instance.log(
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"$e\n$s",
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level: LogLevel.Fatal,
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);
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rethrow;
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}
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final amount = txData.amount!;
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// add the send transaction
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final transaction = Transaction(
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walletId: walletId,
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txid: txid,
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timestamp: (DateTime.now().millisecondsSinceEpoch ~/ 1000),
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type: TransactionType.outgoing,
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subType: TransactionSubType.join,
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amount: amount.raw.toInt(),
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amountString: amount.toJsonString(),
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fee: txData.fee!.raw.toInt(),
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height: txData.height,
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isCancelled: false,
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isLelantus: true,
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slateId: null,
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nonce: null,
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otherData: null,
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// otherData: transactionInfo["otherData"] as String?,
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inputs: [],
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outputs: [],
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numberOfMessages: null,
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);
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final transactionAddress = await mainDB
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.getAddresses(walletId)
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.filter()
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.valueEqualTo(txData.recipients!.first.address)
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.findFirst() ??
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Address(
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walletId: walletId,
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value: txData.recipients!.first.address,
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derivationIndex: -1,
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derivationPath: null,
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type: AddressType.nonWallet,
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subType: AddressSubType.nonWallet,
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publicKey: [],
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);
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final List<Tuple2<Transaction, Address?>> txnsData = [];
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txnsData.add(Tuple2(transaction, transactionAddress));
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await mainDB.addNewTransactionData(txnsData, walletId);
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} else {
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// This is a mint
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Logging.instance.log("this is a mint", level: LogLevel.Info);
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final List<LelantusCoin> updatedCoins = [];
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for (final mintMap in txData.mintsMapLelantus!) {
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final index = mintMap['index'] as int;
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final mint = LelantusCoin(
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walletId: walletId,
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mintIndex: index,
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value: (mintMap['value'] as int).toString(),
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txid: txid,
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anonymitySetId: latestSetId,
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isUsed: false,
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isJMint: false,
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otherData: null,
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);
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updatedCoins.add(mint);
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}
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// Logging.instance.log(coins);
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try {
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await mainDB.isar.writeTxn(() async {
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await mainDB.isar.lelantusCoins.putAll(updatedCoins);
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});
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} catch (e, s) {
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Logging.instance.log(
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"$e\n$s",
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level: LogLevel.Fatal,
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);
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rethrow;
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}
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}
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return txData.copyWith(
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txid: txid,
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);
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}
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Future<List<Map<String, dynamic>>> fastFetch(List<String> allTxHashes) async {
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List<Map<String, dynamic>> allTransactions = [];
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const futureLimit = 30;
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List<Future<Map<String, dynamic>>> transactionFutures = [];
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int currentFutureCount = 0;
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for (final txHash in allTxHashes) {
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Future<Map<String, dynamic>> transactionFuture =
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electrumXCachedClient.getTransaction(
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txHash: txHash,
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verbose: true,
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coin: cryptoCurrency.coin,
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);
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transactionFutures.add(transactionFuture);
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currentFutureCount++;
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if (currentFutureCount > futureLimit) {
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currentFutureCount = 0;
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await Future.wait(transactionFutures);
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for (final fTx in transactionFutures) {
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final tx = await fTx;
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// delete unused large parts
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tx.remove("hex");
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tx.remove("lelantusData");
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allTransactions.add(tx);
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}
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}
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}
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if (currentFutureCount != 0) {
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currentFutureCount = 0;
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await Future.wait(transactionFutures);
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for (final fTx in transactionFutures) {
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final tx = await fTx;
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// delete unused large parts
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tx.remove("hex");
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tx.remove("lelantusData");
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allTransactions.add(tx);
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}
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}
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return allTransactions;
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}
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Future<Map<Address, Transaction>> getJMintTransactions(
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List<String> transactions,
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) async {
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try {
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Map<Address, Transaction> txs = {};
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List<Map<String, dynamic>> allTransactions =
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await fastFetch(transactions);
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for (int i = 0; i < allTransactions.length; i++) {
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try {
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final tx = allTransactions[i];
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var sendIndex = 1;
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if (tx["vout"][0]["value"] != null &&
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Decimal.parse(tx["vout"][0]["value"].toString()) > Decimal.zero) {
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sendIndex = 0;
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}
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tx["amount"] = tx["vout"][sendIndex]["value"];
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tx["address"] = tx["vout"][sendIndex]["scriptPubKey"]["addresses"][0];
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tx["fees"] = tx["vin"][0]["nFees"];
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final Amount amount = Amount.fromDecimal(
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Decimal.parse(tx["amount"].toString()),
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fractionDigits: cryptoCurrency.fractionDigits,
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);
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final txn = Transaction(
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walletId: walletId,
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txid: tx["txid"] as String,
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timestamp: tx["time"] as int? ??
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(DateTime.now().millisecondsSinceEpoch ~/ 1000),
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type: TransactionType.outgoing,
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subType: TransactionSubType.join,
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amount: amount.raw.toInt(),
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amountString: amount.toJsonString(),
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fee: Amount.fromDecimal(
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Decimal.parse(tx["fees"].toString()),
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fractionDigits: cryptoCurrency.fractionDigits,
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).raw.toInt(),
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height: tx["height"] as int?,
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isCancelled: false,
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isLelantus: true,
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slateId: null,
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otherData: null,
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nonce: null,
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inputs: [],
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outputs: [],
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numberOfMessages: null,
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);
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final address = await mainDB
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.getAddresses(walletId)
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.filter()
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.valueEqualTo(tx["address"] as String)
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.findFirst() ??
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Address(
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walletId: walletId,
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value: tx["address"] as String,
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derivationIndex: -2,
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derivationPath: null,
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type: AddressType.nonWallet,
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subType: AddressSubType.unknown,
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publicKey: [],
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);
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txs[address] = txn;
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} catch (e, s) {
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Logging.instance.log(
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"Exception caught in getJMintTransactions(): $e\n$s",
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level: LogLevel.Info);
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rethrow;
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}
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}
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return txs;
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} catch (e, s) {
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Logging.instance.log(
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"Exception rethrown in getJMintTransactions(): $e\n$s",
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level: LogLevel.Info);
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rethrow;
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}
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}
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|
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Future<List<Map<String, dynamic>>> fetchAnonymitySets() async {
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try {
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final latestSetId = await electrumXClient.getLelantusLatestCoinId();
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|
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final List<Map<String, dynamic>> sets = [];
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List<Future<Map<String, dynamic>>> anonFutures = [];
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for (int i = 1; i <= latestSetId; i++) {
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final set = electrumXCachedClient.getAnonymitySet(
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groupId: "$i",
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coin: info.coin,
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);
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anonFutures.add(set);
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}
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await Future.wait(anonFutures);
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for (int i = 1; i <= latestSetId; i++) {
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Map<String, dynamic> set = (await anonFutures[i - 1]);
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set["setId"] = i;
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sets.add(set);
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}
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return sets;
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} catch (e, s) {
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Logging.instance.log(
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"Exception rethrown from refreshAnonymitySets: $e\n$s",
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level: LogLevel.Error);
|
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rethrow;
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}
|
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}
|
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|
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Future<Map<int, dynamic>> getSetDataMap(int latestSetId) async {
|
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final Map<int, dynamic> setDataMap = {};
|
|
final anonymitySets = await fetchAnonymitySets();
|
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for (int setId = 1; setId <= latestSetId; setId++) {
|
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final setData = anonymitySets
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.firstWhere((element) => element["setId"] == setId, orElse: () => {});
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|
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if (setData.isNotEmpty) {
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setDataMap[setId] = setData;
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}
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}
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return setDataMap;
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}
|
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|
|
// TODO: verify this function does what we think it does
|
|
Future<void> refreshLelantusData() async {
|
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final lelantusCoins = await mainDB.isar.lelantusCoins
|
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.where()
|
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.walletIdEqualTo(walletId)
|
|
.filter()
|
|
.isUsedEqualTo(false)
|
|
.not()
|
|
.valueEqualTo(0.toString())
|
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.findAll();
|
|
|
|
final List<LelantusCoin> updatedCoins = [];
|
|
|
|
final usedSerialNumbersSet =
|
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(await electrumXCachedClient.getUsedCoinSerials(
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coin: info.coin,
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))
|
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.toSet();
|
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|
|
final root = await getRootHDNode();
|
|
|
|
for (final coin in lelantusCoins) {
|
|
final _derivePath = cryptoCurrency.constructDerivePath(
|
|
derivePathType: DerivePathType.bip44,
|
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chain: LelantusFfiWrapper.MINT_INDEX,
|
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index: coin.mintIndex,
|
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);
|
|
|
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final mintKeyPair = root.derivePath(_derivePath);
|
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|
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final String serialNumber = lelantus.GetSerialNumber(
|
|
int.parse(coin.value),
|
|
mintKeyPair.privateKey.data.toHex,
|
|
coin.mintIndex,
|
|
isTestnet: cryptoCurrency.network == CryptoCurrencyNetwork.test,
|
|
);
|
|
final bool isUsed = usedSerialNumbersSet.contains(serialNumber);
|
|
|
|
if (isUsed) {
|
|
updatedCoins.add(coin.copyWith(isUsed: isUsed));
|
|
}
|
|
|
|
final tx = await mainDB.getTransaction(walletId, coin.txid);
|
|
if (tx == null) {
|
|
Logging.instance.log(
|
|
"Transaction with txid=${coin.txid} not found in local db!",
|
|
level: LogLevel.Error,
|
|
);
|
|
}
|
|
}
|
|
|
|
if (updatedCoins.isNotEmpty) {
|
|
try {
|
|
await mainDB.isar.writeTxn(() async {
|
|
for (final c in updatedCoins) {
|
|
await mainDB.isar.lelantusCoins.deleteByMintIndexWalletId(
|
|
c.mintIndex,
|
|
c.walletId,
|
|
);
|
|
}
|
|
await mainDB.isar.lelantusCoins.putAll(updatedCoins);
|
|
});
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"$e\n$s",
|
|
level: LogLevel.Fatal,
|
|
);
|
|
rethrow;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Should only be called within the standard wallet [recover] function due to
|
|
/// mutex locking. Otherwise behaviour MAY be undefined.
|
|
Future<void> recoverLelantusWallet({
|
|
required int latestSetId,
|
|
required Map<dynamic, dynamic> setDataMap,
|
|
required Set<String> usedSerialNumbers,
|
|
}) async {
|
|
final root = await getRootHDNode();
|
|
|
|
final derivePath = cryptoCurrency.constructDerivePath(
|
|
derivePathType: DerivePathType.bip44,
|
|
chain: 0,
|
|
index: 0,
|
|
);
|
|
|
|
// get "m/$purpose'/$coinType'/$account'/" from "m/$purpose'/$coinType'/$account'/0/0"
|
|
final partialDerivationPath = derivePath.substring(
|
|
0,
|
|
derivePath.length - 3,
|
|
);
|
|
|
|
final result = await LelantusFfiWrapper.restore(
|
|
hexRootPrivateKey: root.privateKey.data.toHex,
|
|
chaincode: root.chaincode,
|
|
cryptoCurrency: cryptoCurrency,
|
|
latestSetId: latestSetId,
|
|
setDataMap: setDataMap,
|
|
usedSerialNumbers: usedSerialNumbers,
|
|
walletId: walletId,
|
|
partialDerivationPath: partialDerivationPath,
|
|
);
|
|
|
|
final currentHeight = await chainHeight;
|
|
|
|
final txns = await mainDB
|
|
.getTransactions(walletId)
|
|
.filter()
|
|
.isLelantusIsNull()
|
|
.or()
|
|
.isLelantusEqualTo(false)
|
|
.findAll();
|
|
|
|
// Edit the receive transactions with the mint fees.
|
|
List<Transaction> editedTransactions = [];
|
|
|
|
for (final coin in result.lelantusCoins) {
|
|
String txid = coin.txid;
|
|
Transaction? tx;
|
|
try {
|
|
tx = txns.firstWhere((e) => e.txid == txid);
|
|
} catch (_) {
|
|
tx = null;
|
|
}
|
|
|
|
if (tx == null || tx.subType == TransactionSubType.join) {
|
|
// This is a jmint.
|
|
continue;
|
|
}
|
|
|
|
List<Transaction> inputTxns = [];
|
|
for (final input in tx.inputs) {
|
|
Transaction? inputTx;
|
|
try {
|
|
inputTx = txns.firstWhere((e) => e.txid == input.txid);
|
|
} catch (_) {
|
|
inputTx = null;
|
|
}
|
|
if (inputTx != null) {
|
|
inputTxns.add(inputTx);
|
|
}
|
|
}
|
|
if (inputTxns.isEmpty) {
|
|
//some error.
|
|
Logging.instance.log(
|
|
"cryptic \"//some error\" occurred in staticProcessRestore on lelantus coin: $coin",
|
|
level: LogLevel.Error,
|
|
);
|
|
continue;
|
|
}
|
|
|
|
int mintFee = tx.fee;
|
|
int sharedFee = mintFee ~/ inputTxns.length;
|
|
for (final inputTx in inputTxns) {
|
|
final edited = Transaction(
|
|
walletId: inputTx.walletId,
|
|
txid: inputTx.txid,
|
|
timestamp: inputTx.timestamp,
|
|
type: inputTx.type,
|
|
subType: TransactionSubType.mint,
|
|
amount: inputTx.amount,
|
|
amountString: Amount(
|
|
rawValue: BigInt.from(inputTx.amount),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
).toJsonString(),
|
|
fee: sharedFee,
|
|
height: inputTx.height,
|
|
isCancelled: false,
|
|
isLelantus: true,
|
|
slateId: null,
|
|
otherData: txid,
|
|
nonce: null,
|
|
inputs: inputTx.inputs,
|
|
outputs: inputTx.outputs,
|
|
numberOfMessages: null,
|
|
)..address.value = inputTx.address.value;
|
|
editedTransactions.add(edited);
|
|
}
|
|
}
|
|
// Logging.instance.log(editedTransactions, addToDebugMessagesDB: false);
|
|
|
|
Map<String, Transaction> transactionMap = {};
|
|
for (final e in txns) {
|
|
transactionMap[e.txid] = e;
|
|
}
|
|
// Logging.instance.log(transactionMap, addToDebugMessagesDB: false);
|
|
|
|
// update with edited transactions
|
|
for (final tx in editedTransactions) {
|
|
transactionMap[tx.txid] = tx;
|
|
}
|
|
|
|
transactionMap.removeWhere((key, value) =>
|
|
result.lelantusCoins.any((element) => element.txid == key) ||
|
|
((value.height == -1 || value.height == null) &&
|
|
!value.isConfirmed(currentHeight, cryptoCurrency.minConfirms)));
|
|
|
|
try {
|
|
await mainDB.isar.writeTxn(() async {
|
|
await mainDB.isar.lelantusCoins.putAll(result.lelantusCoins);
|
|
});
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"$e\n$s",
|
|
level: LogLevel.Fatal,
|
|
);
|
|
// don't just rethrow since isar likes to strip stack traces for some reason
|
|
throw Exception("e=$e & s=$s");
|
|
}
|
|
|
|
Map<String, Tuple2<Address?, Transaction>> data = {};
|
|
|
|
for (final entry in transactionMap.entries) {
|
|
data[entry.key] = Tuple2(entry.value.address.value, entry.value);
|
|
}
|
|
|
|
// Create the joinsplit transactions.
|
|
final spendTxs = await getJMintTransactions(
|
|
result.spendTxIds,
|
|
);
|
|
Logging.instance.log(spendTxs, level: LogLevel.Info);
|
|
|
|
for (var element in spendTxs.entries) {
|
|
final address = element.value.address.value ??
|
|
data[element.value.txid]?.item1 ??
|
|
element.key;
|
|
// Address(
|
|
// walletId: walletId,
|
|
// value: transactionInfo["address"] as String,
|
|
// derivationIndex: -1,
|
|
// type: AddressType.nonWallet,
|
|
// subType: AddressSubType.nonWallet,
|
|
// publicKey: [],
|
|
// );
|
|
|
|
data[element.value.txid] = Tuple2(address, element.value);
|
|
}
|
|
|
|
final List<Tuple2<Transaction, Address?>> txnsData = [];
|
|
|
|
for (final value in data.values) {
|
|
final transactionAddress = value.item1!;
|
|
final outs =
|
|
value.item2.outputs.where((_) => true).toList(growable: false);
|
|
final ins = value.item2.inputs.where((_) => true).toList(growable: false);
|
|
|
|
txnsData.add(Tuple2(
|
|
value.item2.copyWith(inputs: ins, outputs: outs).item1,
|
|
transactionAddress));
|
|
}
|
|
|
|
await mainDB.addNewTransactionData(txnsData, walletId);
|
|
}
|
|
|
|
/// Builds and signs a transaction
|
|
Future<TxData> buildMintTransaction({required TxData txData}) async {
|
|
final signingData = await fetchBuildTxData(txData.utxos!.toList());
|
|
|
|
final txb = bitcoindart.TransactionBuilder(
|
|
network: bitcoindart.NetworkType(
|
|
messagePrefix: cryptoCurrency.networkParams.messagePrefix,
|
|
bech32: cryptoCurrency.networkParams.bech32Hrp,
|
|
bip32: bitcoindart.Bip32Type(
|
|
public: cryptoCurrency.networkParams.pubHDPrefix,
|
|
private: cryptoCurrency.networkParams.privHDPrefix,
|
|
),
|
|
pubKeyHash: cryptoCurrency.networkParams.p2pkhPrefix,
|
|
scriptHash: cryptoCurrency.networkParams.p2shPrefix,
|
|
wif: cryptoCurrency.networkParams.wifPrefix,
|
|
),
|
|
);
|
|
txb.setVersion(2);
|
|
|
|
final int height = await chainHeight;
|
|
|
|
txb.setLockTime(height);
|
|
int amount = 0;
|
|
// Add transaction inputs
|
|
for (var i = 0; i < signingData.length; i++) {
|
|
txb.addInput(
|
|
signingData[i].utxo.txid,
|
|
signingData[i].utxo.vout,
|
|
null,
|
|
signingData[i].output,
|
|
);
|
|
amount += signingData[i].utxo.value;
|
|
}
|
|
|
|
for (var mintsElement in txData.mintsMapLelantus!) {
|
|
Logging.instance.log("using $mintsElement", level: LogLevel.Info);
|
|
Uint8List mintu8 =
|
|
Format.stringToUint8List(mintsElement['script'] as String);
|
|
txb.addOutput(mintu8, mintsElement['value'] as int);
|
|
}
|
|
|
|
for (var i = 0; i < signingData.length; i++) {
|
|
txb.sign(
|
|
vin: i,
|
|
keyPair: signingData[i].keyPair!,
|
|
witnessValue: signingData[i].utxo.value,
|
|
);
|
|
}
|
|
var incomplete = txb.buildIncomplete();
|
|
var txId = incomplete.getId();
|
|
var txHex = incomplete.toHex();
|
|
int fee = amount - incomplete.outs[0].value!;
|
|
|
|
var builtHex = txb.build();
|
|
|
|
return txData.copyWith(
|
|
recipients: [
|
|
(
|
|
amount: Amount(
|
|
rawValue: BigInt.from(incomplete.outs[0].value!),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
address: "no address for lelantus mints",
|
|
isChange: false,
|
|
)
|
|
],
|
|
vSize: builtHex.virtualSize(),
|
|
txid: txId,
|
|
raw: txHex,
|
|
height: height,
|
|
txType: TransactionType.outgoing,
|
|
txSubType: TransactionSubType.mint,
|
|
fee: Amount(
|
|
rawValue: BigInt.from(fee),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
);
|
|
|
|
// return {
|
|
// "transaction": builtHex,
|
|
// "txid": txId,
|
|
// "txHex": txHex,
|
|
// "value": amount - fee,
|
|
// "fees": Amount(
|
|
// rawValue: BigInt.from(fee),
|
|
// fractionDigits: coin.decimals,
|
|
// ).decimal.toDouble(),
|
|
// "height": height,
|
|
// "txType": "Sent",
|
|
// "confirmed_status": false,
|
|
// "amount": Amount(
|
|
// rawValue: BigInt.from(amount),
|
|
// fractionDigits: coin.decimals,
|
|
// ).decimal.toDouble(),
|
|
// "timestamp": DateTime.now().millisecondsSinceEpoch ~/ 1000,
|
|
// "subType": "mint",
|
|
// "mintsMap": mintsMap,
|
|
// };
|
|
}
|
|
|
|
/// Returns the mint transaction hex to mint all of the available funds.
|
|
Future<TxData> _mintSelection() async {
|
|
final currentChainHeight = await chainHeight;
|
|
final List<UTXO> availableOutputs = await mainDB
|
|
.getUTXOs(walletId)
|
|
.filter()
|
|
.isBlockedEqualTo(false)
|
|
.findAll();
|
|
final List<UTXO?> spendableOutputs = [];
|
|
|
|
// Build list of spendable outputs and totaling their satoshi amount
|
|
for (var i = 0; i < availableOutputs.length; i++) {
|
|
if (availableOutputs[i].isConfirmed(
|
|
currentChainHeight, cryptoCurrency.minConfirms) ==
|
|
true &&
|
|
!(availableOutputs[i].isCoinbase &&
|
|
availableOutputs[i].getConfirmations(currentChainHeight) <=
|
|
101)) {
|
|
spendableOutputs.add(availableOutputs[i]);
|
|
}
|
|
}
|
|
|
|
final lelantusCoins = await mainDB.isar.lelantusCoins
|
|
.where()
|
|
.walletIdEqualTo(walletId)
|
|
.filter()
|
|
.not()
|
|
.valueEqualTo(0.toString())
|
|
.findAll();
|
|
|
|
final data = await mainDB
|
|
.getTransactions(walletId)
|
|
.filter()
|
|
.isLelantusIsNull()
|
|
.or()
|
|
.isLelantusEqualTo(false)
|
|
.findAll();
|
|
|
|
for (final value in data) {
|
|
if (value.inputs.isNotEmpty) {
|
|
for (var element in value.inputs) {
|
|
if (lelantusCoins.any((e) => e.txid == value.txid) &&
|
|
spendableOutputs.firstWhere(
|
|
(output) => output?.txid == element.txid,
|
|
orElse: () => null) !=
|
|
null) {
|
|
spendableOutputs
|
|
.removeWhere((output) => output!.txid == element.txid);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there is no Utxos to mint then stop the function.
|
|
if (spendableOutputs.isEmpty) {
|
|
throw Exception("_mintSelection(): No spendable outputs found");
|
|
}
|
|
|
|
int satoshisBeingUsed = 0;
|
|
Set<UTXO> utxoObjectsToUse = {};
|
|
|
|
for (var i = 0; i < spendableOutputs.length; i++) {
|
|
final spendable = spendableOutputs[i];
|
|
if (spendable != null) {
|
|
utxoObjectsToUse.add(spendable);
|
|
satoshisBeingUsed += spendable.value;
|
|
}
|
|
}
|
|
|
|
var mintsWithoutFee = await _createMintsFromAmount(satoshisBeingUsed);
|
|
|
|
TxData txData = await buildMintTransaction(
|
|
txData: TxData(
|
|
utxos: utxoObjectsToUse,
|
|
mintsMapLelantus: mintsWithoutFee,
|
|
),
|
|
);
|
|
|
|
final Decimal dvSize = Decimal.fromInt(txData.vSize!);
|
|
|
|
final feesObject = await fees;
|
|
|
|
final Decimal fastFee = Amount(
|
|
rawValue: BigInt.from(feesObject.fast),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
).decimal;
|
|
int firoFee =
|
|
(dvSize * fastFee * Decimal.fromInt(100000)).toDouble().ceil();
|
|
// int firoFee = (vSize * feesObject.fast * (1 / 1000.0) * 100000000).ceil();
|
|
|
|
if (firoFee < txData.vSize!) {
|
|
firoFee = txData.vSize! + 1;
|
|
}
|
|
firoFee = firoFee + 10;
|
|
final int satoshiAmountToSend = satoshisBeingUsed - firoFee;
|
|
|
|
final mintsWithFee = await _createMintsFromAmount(satoshiAmountToSend);
|
|
|
|
txData = await buildMintTransaction(
|
|
txData: txData.copyWith(
|
|
mintsMapLelantus: mintsWithFee,
|
|
),
|
|
);
|
|
|
|
return txData;
|
|
}
|
|
|
|
Future<List<Map<String, dynamic>>> _createMintsFromAmount(int total) async {
|
|
if (total > LelantusFfiWrapper.MINT_LIMIT) {
|
|
throw Exception(
|
|
"Lelantus mints of more than 5001 are currently disabled");
|
|
}
|
|
|
|
int tmpTotal = total;
|
|
int counter = 0;
|
|
final lastUsedIndex =
|
|
await mainDB.getHighestUsedMintIndex(walletId: walletId);
|
|
final nextFreeMintIndex = (lastUsedIndex ?? 0) + 1;
|
|
|
|
final isTestnet = cryptoCurrency.network == CryptoCurrencyNetwork.test;
|
|
|
|
final root = await getRootHDNode();
|
|
|
|
final mints = <Map<String, dynamic>>[];
|
|
while (tmpTotal > 0) {
|
|
final index = nextFreeMintIndex + counter;
|
|
|
|
final mintKeyPair = root.derivePath(
|
|
cryptoCurrency.constructDerivePath(
|
|
derivePathType: DerivePathType.bip44,
|
|
chain: LelantusFfiWrapper.MINT_INDEX,
|
|
index: index,
|
|
),
|
|
);
|
|
|
|
final privateKeyHex = mintKeyPair.privateKey.data.toHex;
|
|
final seedId = Format.uint8listToString(mintKeyPair.identifier);
|
|
|
|
final String mintTag = lelantus.CreateTag(
|
|
privateKeyHex,
|
|
index,
|
|
seedId,
|
|
isTestnet: isTestnet,
|
|
);
|
|
final List<Map<String, dynamic>> anonymitySets;
|
|
try {
|
|
anonymitySets = await fetchAnonymitySets();
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Firo needs better internet to create mints: $e\n$s",
|
|
level: LogLevel.Fatal,
|
|
);
|
|
rethrow;
|
|
}
|
|
|
|
bool isUsedMintTag = false;
|
|
|
|
// stupid dynamic maps
|
|
for (final set in anonymitySets) {
|
|
final setCoins = set["coins"] as List;
|
|
for (final coin in setCoins) {
|
|
if (coin[1] == mintTag) {
|
|
isUsedMintTag = true;
|
|
break;
|
|
}
|
|
}
|
|
if (isUsedMintTag) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (isUsedMintTag) {
|
|
Logging.instance.log(
|
|
"Found used index when minting",
|
|
level: LogLevel.Warning,
|
|
);
|
|
}
|
|
|
|
if (!isUsedMintTag) {
|
|
final mintValue = min(
|
|
tmpTotal,
|
|
(isTestnet
|
|
? LelantusFfiWrapper.MINT_LIMIT_TESTNET
|
|
: LelantusFfiWrapper.MINT_LIMIT));
|
|
final mint = await LelantusFfiWrapper.getMintScript(
|
|
amount: Amount(
|
|
rawValue: BigInt.from(mintValue),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
privateKeyHex: privateKeyHex,
|
|
index: index,
|
|
seedId: seedId,
|
|
isTestNet: isTestnet,
|
|
);
|
|
|
|
mints.add({
|
|
"value": mintValue,
|
|
"script": mint,
|
|
"index": index,
|
|
});
|
|
tmpTotal = tmpTotal -
|
|
(isTestnet
|
|
? LelantusFfiWrapper.MINT_LIMIT_TESTNET
|
|
: LelantusFfiWrapper.MINT_LIMIT);
|
|
}
|
|
|
|
counter++;
|
|
}
|
|
return mints;
|
|
}
|
|
|
|
Future<void> anonymizeAllLelantus() async {
|
|
try {
|
|
final mintResult = await _mintSelection();
|
|
|
|
await confirmSendLelantus(txData: mintResult);
|
|
|
|
unawaited(refresh());
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception caught in anonymizeAllLelantus(): $e\n$s",
|
|
level: LogLevel.Warning,
|
|
);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<void> updateBalance() async {
|
|
// call to super to update transparent balance
|
|
final normalBalanceFuture = super.updateBalance();
|
|
|
|
final lelantusCoins = await mainDB.isar.lelantusCoins
|
|
.where()
|
|
.walletIdEqualTo(walletId)
|
|
.filter()
|
|
.isUsedEqualTo(false)
|
|
.not()
|
|
.valueEqualTo(0.toString())
|
|
.findAll();
|
|
|
|
final currentChainHeight = await chainHeight;
|
|
int intLelantusBalance = 0;
|
|
int unconfirmedLelantusBalance = 0;
|
|
|
|
for (final lelantusCoin in lelantusCoins) {
|
|
final Transaction? txn = mainDB.isar.transactions
|
|
.where()
|
|
.txidWalletIdEqualTo(
|
|
lelantusCoin.txid,
|
|
walletId,
|
|
)
|
|
.findFirstSync();
|
|
|
|
if (txn == null) {
|
|
Logging.instance.log(
|
|
"Transaction not found in DB for lelantus coin: $lelantusCoin",
|
|
level: LogLevel.Fatal,
|
|
);
|
|
} else {
|
|
if (txn.isLelantus != true) {
|
|
Logging.instance.log(
|
|
"Bad database state found in ${info.name} $walletId for _refreshBalance lelantus",
|
|
level: LogLevel.Fatal,
|
|
);
|
|
}
|
|
|
|
if (txn.isConfirmed(currentChainHeight, cryptoCurrency.minConfirms)) {
|
|
// mint tx, add value to balance
|
|
intLelantusBalance += int.parse(lelantusCoin.value);
|
|
} else {
|
|
unconfirmedLelantusBalance += int.parse(lelantusCoin.value);
|
|
}
|
|
}
|
|
}
|
|
|
|
final balancePrivate = Balance(
|
|
total: Amount(
|
|
rawValue: BigInt.from(intLelantusBalance + unconfirmedLelantusBalance),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
spendable: Amount(
|
|
rawValue: BigInt.from(intLelantusBalance),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
blockedTotal: Amount(
|
|
rawValue: BigInt.zero,
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
pendingSpendable: Amount(
|
|
rawValue: BigInt.from(unconfirmedLelantusBalance),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
);
|
|
await info.updateBalanceSecondary(
|
|
newBalance: balancePrivate,
|
|
isar: mainDB.isar,
|
|
);
|
|
|
|
// wait for updated uxtos to get updated public balance
|
|
await normalBalanceFuture;
|
|
}
|
|
}
|