mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-11-17 09:47:35 +00:00
434 lines
17 KiB
Dart
434 lines
17 KiB
Dart
import 'dart:async';
|
|
import 'dart:math';
|
|
import 'package:collection/collection.dart';
|
|
import 'package:convert/convert.dart';
|
|
import 'package:crypto/crypto.dart';
|
|
import 'package:fixnum/fixnum.dart';
|
|
import 'package:bitcoin_base/bitcoin_base.dart';
|
|
import 'package:cw_bitcoin/bitcoin_mnemonic.dart';
|
|
import 'package:cw_bitcoin/bitcoin_transaction_priority.dart';
|
|
import 'package:cw_bitcoin/bitcoin_unspent.dart';
|
|
import 'package:cw_bitcoin/electrum_transaction_info.dart';
|
|
import 'package:cw_bitcoin/pending_bitcoin_transaction.dart';
|
|
import 'package:cw_bitcoin/utils.dart';
|
|
import 'package:cw_core/crypto_currency.dart';
|
|
import 'package:cw_core/pending_transaction.dart';
|
|
import 'package:cw_core/sync_status.dart';
|
|
import 'package:cw_core/transaction_direction.dart';
|
|
import 'package:cw_core/unspent_coins_info.dart';
|
|
import 'package:cw_bitcoin/litecoin_wallet_addresses.dart';
|
|
import 'package:cw_core/transaction_priority.dart';
|
|
import 'package:flutter/foundation.dart';
|
|
import 'package:hive/hive.dart';
|
|
import 'package:mobx/mobx.dart';
|
|
import 'package:cw_core/wallet_info.dart';
|
|
import 'package:cw_core/wallet_type.dart';
|
|
import 'package:cw_bitcoin/electrum_wallet_snapshot.dart';
|
|
import 'package:cw_bitcoin/electrum_wallet.dart';
|
|
import 'package:cw_bitcoin/bitcoin_address_record.dart';
|
|
import 'package:cw_bitcoin/electrum_balance.dart';
|
|
import 'package:cw_bitcoin/litecoin_network.dart';
|
|
import 'package:cw_mweb/cw_mweb.dart';
|
|
import 'package:cw_mweb/mwebd.pb.dart';
|
|
import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
|
|
|
|
part 'litecoin_wallet.g.dart';
|
|
|
|
class LitecoinWallet = LitecoinWalletBase with _$LitecoinWallet;
|
|
|
|
abstract class LitecoinWalletBase extends ElectrumWallet with Store {
|
|
LitecoinWalletBase({
|
|
required String mnemonic,
|
|
required String password,
|
|
required WalletInfo walletInfo,
|
|
required Box<UnspentCoinsInfo> unspentCoinsInfo,
|
|
required Uint8List seedBytes,
|
|
String? addressPageType,
|
|
List<BitcoinAddressRecord>? initialAddresses,
|
|
ElectrumBalance? initialBalance,
|
|
Map<String, int>? initialRegularAddressIndex,
|
|
Map<String, int>? initialChangeAddressIndex,
|
|
}) : mwebHd = bitcoin.HDWallet.fromSeed(seedBytes,
|
|
network: litecoinNetwork).derivePath("m/1000'"),
|
|
super(
|
|
mnemonic: mnemonic,
|
|
password: password,
|
|
walletInfo: walletInfo,
|
|
unspentCoinsInfo: unspentCoinsInfo,
|
|
networkType: litecoinNetwork,
|
|
initialAddresses: initialAddresses,
|
|
initialBalance: initialBalance,
|
|
seedBytes: seedBytes,
|
|
currency: CryptoCurrency.ltc) {
|
|
walletAddresses = LitecoinWalletAddresses(
|
|
walletInfo,
|
|
electrumClient: electrumClient,
|
|
initialAddresses: initialAddresses,
|
|
initialRegularAddressIndex: initialRegularAddressIndex,
|
|
initialChangeAddressIndex: initialChangeAddressIndex,
|
|
mainHd: hd,
|
|
sideHd: bitcoin.HDWallet.fromSeed(seedBytes, network: networkType).derivePath("m/0'/1"),
|
|
mwebHd: mwebHd,
|
|
network: network,
|
|
);
|
|
autorun((_) {
|
|
this.walletAddresses.isEnabledAutoGenerateSubaddress = this.isEnabledAutoGenerateSubaddress;
|
|
});
|
|
}
|
|
|
|
final bitcoin.HDWallet mwebHd;
|
|
|
|
static Future<LitecoinWallet> create(
|
|
{required String mnemonic,
|
|
required String password,
|
|
required WalletInfo walletInfo,
|
|
required Box<UnspentCoinsInfo> unspentCoinsInfo,
|
|
String? addressPageType,
|
|
List<BitcoinAddressRecord>? initialAddresses,
|
|
ElectrumBalance? initialBalance,
|
|
Map<String, int>? initialRegularAddressIndex,
|
|
Map<String, int>? initialChangeAddressIndex}) async {
|
|
return LitecoinWallet(
|
|
mnemonic: mnemonic,
|
|
password: password,
|
|
walletInfo: walletInfo,
|
|
unspentCoinsInfo: unspentCoinsInfo,
|
|
initialAddresses: initialAddresses,
|
|
initialBalance: initialBalance,
|
|
seedBytes: await mnemonicToSeedBytes(mnemonic),
|
|
initialRegularAddressIndex: initialRegularAddressIndex,
|
|
initialChangeAddressIndex: initialChangeAddressIndex,
|
|
addressPageType: addressPageType,
|
|
);
|
|
}
|
|
|
|
static Future<LitecoinWallet> open({
|
|
required String name,
|
|
required WalletInfo walletInfo,
|
|
required Box<UnspentCoinsInfo> unspentCoinsInfo,
|
|
required String password,
|
|
}) async {
|
|
final snp =
|
|
await ElectrumWalletSnapshot.load(name, walletInfo.type, password, LitecoinNetwork.mainnet);
|
|
return LitecoinWallet(
|
|
mnemonic: snp.mnemonic,
|
|
password: password,
|
|
walletInfo: walletInfo,
|
|
unspentCoinsInfo: unspentCoinsInfo,
|
|
initialAddresses: snp.addresses,
|
|
initialBalance: snp.balance,
|
|
seedBytes: await mnemonicToSeedBytes(snp.mnemonic),
|
|
initialRegularAddressIndex: snp.regularAddressIndex,
|
|
initialChangeAddressIndex: snp.changeAddressIndex,
|
|
addressPageType: snp.addressPageType,
|
|
);
|
|
}
|
|
|
|
int mwebUtxosHeight = 0;
|
|
|
|
@action
|
|
@override
|
|
Future<void> startSync() async {
|
|
await super.startSync();
|
|
final stub = await CwMweb.stub();
|
|
Timer.periodic(
|
|
const Duration(milliseconds: 1500), (timer) async {
|
|
if (syncStatus is FailedSyncStatus) return;
|
|
final height = await electrumClient.getCurrentBlockChainTip() ?? 0;
|
|
final resp = await stub.status(StatusRequest());
|
|
if (resp.blockHeaderHeight < height) {
|
|
int h = resp.blockHeaderHeight;
|
|
syncStatus = SyncingSyncStatus(height - h, h / height);
|
|
} else if (resp.mwebHeaderHeight < height) {
|
|
int h = resp.mwebHeaderHeight;
|
|
syncStatus = SyncingSyncStatus(height - h, h / height);
|
|
} else if (resp.mwebUtxosHeight < height) {
|
|
syncStatus = SyncingSyncStatus(1, 0.999);
|
|
} else {
|
|
syncStatus = SyncedSyncStatus();
|
|
if (resp.mwebUtxosHeight > mwebUtxosHeight) {
|
|
mwebUtxosHeight = resp.mwebUtxosHeight;
|
|
await checkMwebUtxosSpent();
|
|
for (final transaction in transactionHistory.transactions.values) {
|
|
if (transaction.isPending) continue;
|
|
final confirmations = mwebUtxosHeight - transaction.height + 1;
|
|
if (transaction.confirmations == confirmations) continue;
|
|
transaction.confirmations = confirmations;
|
|
transactionHistory.addOne(transaction);
|
|
}
|
|
await transactionHistory.save();
|
|
}
|
|
}
|
|
});
|
|
processMwebUtxos();
|
|
}
|
|
|
|
final Map<String, Utxo> mwebUtxos = {};
|
|
|
|
Future<void> processMwebUtxos() async {
|
|
final stub = await CwMweb.stub();
|
|
final scanSecret = mwebHd.derive(0x80000000).privKey!;
|
|
final req = UtxosRequest(scanSecret: hex.decode(scanSecret));
|
|
var initDone = false;
|
|
await for (var utxo in stub.utxos(req)) {
|
|
if (utxo.address.isEmpty) {
|
|
await updateUnspent();
|
|
await updateBalance();
|
|
initDone = true;
|
|
}
|
|
final mwebAddrs = (walletAddresses as LitecoinWalletAddresses).mwebAddrs;
|
|
if (!mwebAddrs.contains(utxo.address)) continue;
|
|
mwebUtxos[utxo.outputId] = utxo;
|
|
|
|
final status = await stub.status(StatusRequest());
|
|
var date = DateTime.now();
|
|
var confirmations = 0;
|
|
if (utxo.height > 0) {
|
|
date = DateTime.fromMillisecondsSinceEpoch(utxo.blockTime * 1000);
|
|
confirmations = status.blockHeaderHeight - utxo.height + 1;
|
|
}
|
|
var tx = transactionHistory.transactions.values.firstWhereOrNull(
|
|
(tx) => tx.outputAddresses?.contains(utxo.outputId) ?? false);
|
|
if (tx == null)
|
|
tx = ElectrumTransactionInfo(WalletType.litecoin,
|
|
id: utxo.outputId, height: utxo.height,
|
|
amount: utxo.value.toInt(), fee: 0,
|
|
direction: TransactionDirection.incoming,
|
|
isPending: utxo.height == 0,
|
|
date: date, confirmations: confirmations,
|
|
inputAddresses: [], outputAddresses: [utxo.outputId]);
|
|
tx.height = utxo.height;
|
|
tx.isPending = utxo.height == 0;
|
|
tx.confirmations = confirmations;
|
|
var isNew = transactionHistory.transactions[tx.id] == null;
|
|
if (!(tx.outputAddresses?.contains(utxo.address) ?? false)) {
|
|
tx.outputAddresses?.add(utxo.address);
|
|
isNew = true;
|
|
}
|
|
if (isNew) {
|
|
final addressRecord = walletAddresses.allAddresses.firstWhere(
|
|
(addressRecord) => addressRecord.address == utxo.address);
|
|
if (!(tx.inputAddresses?.contains(utxo.address) ?? false))
|
|
addressRecord.txCount++;
|
|
addressRecord.balance += utxo.value.toInt();
|
|
addressRecord.setAsUsed();
|
|
}
|
|
transactionHistory.addOne(tx);
|
|
if (initDone) {
|
|
await updateUnspent();
|
|
await updateBalance();
|
|
}
|
|
}
|
|
}
|
|
|
|
Future<void> checkMwebUtxosSpent() async {
|
|
while ((await Future.wait(transactionHistory.transactions.values
|
|
.where((tx) => tx.direction == TransactionDirection.outgoing && tx.isPending)
|
|
.map(checkPendingTransaction))).any((x) => x));
|
|
final outputIds = mwebUtxos.values
|
|
.where((utxo) => utxo.height > 0)
|
|
.map((utxo) => utxo.outputId).toList();
|
|
final stub = await CwMweb.stub();
|
|
final resp = await stub.spent(SpentRequest(outputId: outputIds));
|
|
final spent = resp.outputId;
|
|
if (spent.isEmpty) return;
|
|
final status = await stub.status(StatusRequest());
|
|
final height = await electrumClient.getCurrentBlockChainTip();
|
|
if (height == null || status.blockHeaderHeight != height) return;
|
|
if (status.mwebUtxosHeight != height) return;
|
|
int amount = 0;
|
|
Set<String> inputAddresses = {};
|
|
var output = AccumulatorSink<Digest>();
|
|
var input = sha256.startChunkedConversion(output);
|
|
for (final outputId in spent) {
|
|
final utxo = mwebUtxos[outputId];
|
|
if (utxo == null) continue;
|
|
final addressRecord = walletAddresses.allAddresses.firstWhere(
|
|
(addressRecord) => addressRecord.address == utxo.address);
|
|
if (!inputAddresses.contains(utxo.address))
|
|
addressRecord.txCount++;
|
|
addressRecord.balance -= utxo.value.toInt();
|
|
amount += utxo.value.toInt();
|
|
inputAddresses.add(utxo.address);
|
|
mwebUtxos.remove(outputId);
|
|
input.add(hex.decode(outputId));
|
|
}
|
|
if (inputAddresses.isEmpty) return;
|
|
input.close();
|
|
var digest = output.events.single;
|
|
final tx = ElectrumTransactionInfo(WalletType.litecoin,
|
|
id: digest.toString(), height: height,
|
|
amount: amount, fee: 0,
|
|
direction: TransactionDirection.outgoing,
|
|
isPending: false,
|
|
date: DateTime.fromMillisecondsSinceEpoch(status.blockTime * 1000),
|
|
confirmations: 1,
|
|
inputAddresses: inputAddresses.toList(),
|
|
outputAddresses: []);
|
|
transactionHistory.addOne(tx);
|
|
await transactionHistory.save();
|
|
}
|
|
|
|
Future<bool> checkPendingTransaction(ElectrumTransactionInfo tx) async {
|
|
if (!tx.isPending) return false;
|
|
final outputId = <String>[], target = <String>{};
|
|
final isHash = RegExp(r'^[a-f0-9]{64}$').hasMatch;
|
|
final spendingOutputIds = tx.inputAddresses?.where(isHash) ?? [];
|
|
final payingToOutputIds = tx.outputAddresses?.where(isHash) ?? [];
|
|
outputId.addAll(spendingOutputIds);
|
|
outputId.addAll(payingToOutputIds);
|
|
target.addAll(spendingOutputIds);
|
|
for (final outputId in payingToOutputIds) {
|
|
final spendingTx = transactionHistory.transactions.values.firstWhereOrNull(
|
|
(tx) => tx.inputAddresses?.contains(outputId) ?? false);
|
|
if (spendingTx != null && !spendingTx.isPending)
|
|
target.add(outputId);
|
|
}
|
|
if (outputId.isEmpty) return false;
|
|
final stub = await CwMweb.stub();
|
|
final resp = await stub.spent(SpentRequest(outputId: outputId));
|
|
if (!setEquals(resp.outputId.toSet(), target)) return false;
|
|
final status = await stub.status(StatusRequest());
|
|
if (!tx.isPending) return false;
|
|
tx.height = status.mwebUtxosHeight;
|
|
tx.confirmations = 1;
|
|
tx.isPending = false;
|
|
await transactionHistory.save();
|
|
return true;
|
|
}
|
|
|
|
@override
|
|
Future<void> updateUnspentCoins() async {
|
|
await super.updateUnspentCoins();
|
|
await checkMwebUtxosSpent();
|
|
final mwebAddrs = (walletAddresses as LitecoinWalletAddresses).mwebAddrs;
|
|
mwebUtxos.forEach((outputId, utxo) {
|
|
final addressRecord = walletAddresses.allAddresses.firstWhere(
|
|
(addressRecord) => addressRecord.address == utxo.address);
|
|
final unspent = BitcoinUnspent(addressRecord, outputId,
|
|
utxo.value.toInt(), mwebAddrs.indexOf(utxo.address));
|
|
if (unspent.vout == 0) unspent.isChange = true;
|
|
unspentCoins.add(unspent);
|
|
});
|
|
}
|
|
|
|
@override
|
|
Future<ElectrumBalance> fetchBalances() async {
|
|
final balance = await super.fetchBalances();
|
|
var confirmed = balance.confirmed;
|
|
var unconfirmed = balance.unconfirmed;
|
|
mwebUtxos.values.forEach((utxo) {
|
|
if (utxo.height > 0)
|
|
confirmed += utxo.value.toInt();
|
|
else
|
|
unconfirmed += utxo.value.toInt();
|
|
});
|
|
return ElectrumBalance(confirmed: confirmed,
|
|
unconfirmed: unconfirmed, frozen: balance.frozen);
|
|
}
|
|
|
|
@override
|
|
int feeRate(TransactionPriority priority) {
|
|
if (priority is LitecoinTransactionPriority) {
|
|
switch (priority) {
|
|
case LitecoinTransactionPriority.slow:
|
|
return 1;
|
|
case LitecoinTransactionPriority.medium:
|
|
return 2;
|
|
case LitecoinTransactionPriority.fast:
|
|
return 3;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
@override
|
|
Future<int> calcFee({
|
|
required List<UtxoWithAddress> utxos,
|
|
required List<BitcoinBaseOutput> outputs,
|
|
required BasedUtxoNetwork network,
|
|
String? memo,
|
|
required int feeRate}) async {
|
|
|
|
final spendsMweb = utxos.any((utxo) => utxo.utxo.scriptType == SegwitAddresType.mweb);
|
|
final paysToMweb = outputs.any((output) =>
|
|
output.toOutput.scriptPubKey.getAddressType() == SegwitAddresType.mweb);
|
|
if (!spendsMweb && !paysToMweb) {
|
|
return await super.calcFee(utxos: utxos, outputs: outputs,
|
|
network: network, memo: memo, feeRate: feeRate);
|
|
}
|
|
if (outputs.length == 1 && outputs[0].toOutput.amount == BigInt.zero) {
|
|
outputs = [BitcoinScriptOutput(
|
|
script: outputs[0].toOutput.scriptPubKey,
|
|
value: utxos.sumOfUtxosValue())];
|
|
}
|
|
final preOutputSum = outputs.fold<BigInt>(BigInt.zero,
|
|
(acc, output) => acc + output.toOutput.amount);
|
|
final fee = utxos.sumOfUtxosValue() - preOutputSum;
|
|
final txb = BitcoinTransactionBuilder(utxos: utxos,
|
|
outputs: outputs, fee: fee, network: network);
|
|
final stub = await CwMweb.stub();
|
|
final resp = await stub.create(CreateRequest(
|
|
rawTx: txb.buildTransaction((a, b, c, d) => '').toBytes(),
|
|
scanSecret: hex.decode(mwebHd.derive(0x80000000).privKey!),
|
|
spendSecret: hex.decode(mwebHd.derive(0x80000001).privKey!),
|
|
feeRatePerKb: Int64(feeRate * 1000),
|
|
dryRun: true));
|
|
final tx = BtcTransaction.fromRaw(hex.encode(resp.rawTx));
|
|
final posUtxos = utxos.where((utxo) => tx.inputs.any((input) =>
|
|
input.txId == utxo.utxo.txHash && input.txIndex == utxo.utxo.vout)).toList();
|
|
final posOutputSum = tx.outputs.fold<int>(0, (acc, output) => acc + output.amount.toInt());
|
|
final mwebInputSum = utxos.sumOfUtxosValue() - posUtxos.sumOfUtxosValue();
|
|
final expectedPegin = max(0, (preOutputSum - mwebInputSum).toInt());
|
|
var feeIncrease = posOutputSum - expectedPegin;
|
|
if (expectedPegin > 0 && fee == BigInt.zero) {
|
|
feeIncrease += await super.calcFee(utxos: posUtxos, outputs: tx.outputs.map((output) =>
|
|
BitcoinScriptOutput(script: output.scriptPubKey, value: output.amount)).toList(),
|
|
network: network, memo: memo, feeRate: feeRate) + feeRate * 41;
|
|
}
|
|
return fee.toInt() + feeIncrease;
|
|
}
|
|
|
|
@override
|
|
Future<PendingTransaction> createTransaction(Object credentials) async {
|
|
final tx = await super.createTransaction(credentials) as PendingBitcoinTransaction;
|
|
final stub = await CwMweb.stub();
|
|
final resp = await stub.create(CreateRequest(
|
|
rawTx: hex.decode(tx.hex),
|
|
scanSecret: hex.decode(mwebHd.derive(0x80000000).privKey!),
|
|
spendSecret: hex.decode(mwebHd.derive(0x80000001).privKey!),
|
|
feeRatePerKb: Int64.parseInt(tx.feeRate) * 1000));
|
|
final tx2 = BtcTransaction.fromRaw(hex.encode(resp.rawTx));
|
|
tx.hexOverride = tx2.copyWith(witnesses: tx2.inputs.asMap().entries.map((e) {
|
|
final utxo = unspentCoins.firstWhere((utxo) =>
|
|
utxo.hash == e.value.txId && utxo.vout == e.value.txIndex);
|
|
final key = generateECPrivate(hd: utxo.bitcoinAddressRecord.isHidden ?
|
|
walletAddresses.sideHd : walletAddresses.mainHd,
|
|
index: utxo.bitcoinAddressRecord.index, network: network);
|
|
final digest = tx2.getTransactionSegwitDigit(txInIndex: e.key,
|
|
script: key.getPublic().toP2pkhAddress().toScriptPubKey(),
|
|
amount: BigInt.from(utxo.value));
|
|
return TxWitnessInput(stack: [key.signInput(digest), key.getPublic().toHex()]);
|
|
}).toList()).toHex();
|
|
tx.outputs = resp.outputId;
|
|
return tx..addListener((transaction) async {
|
|
final addresses = <String>{};
|
|
transaction.inputAddresses?.forEach((id) {
|
|
final utxo = mwebUtxos.remove(id);
|
|
if (utxo == null) return;
|
|
final addressRecord = walletAddresses.allAddresses.firstWhere(
|
|
(addressRecord) => addressRecord.address == utxo.address);
|
|
if (!addresses.contains(utxo.address)) {
|
|
addressRecord.txCount++;
|
|
addresses.add(utxo.address);
|
|
}
|
|
addressRecord.balance -= utxo.value.toInt();
|
|
});
|
|
transaction.inputAddresses?.addAll(addresses);
|
|
transactionHistory.addOne(transaction);
|
|
await updateUnspent();
|
|
await updateBalance();
|
|
});
|
|
}
|
|
}
|