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frost multi address functionality

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julian 2024-07-17 10:17:54 -06:00 committed by julian-CStack
parent 367daad3c5
commit 7c3703ffd7
6 changed files with 516 additions and 103 deletions
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2
crypto_plugins/frostdart

@ -1 +1 @@
Subproject commit d539de2348bdbb87bac341dcaa6a0755f21d48e2
Subproject commit 2a74a97fb0f0e22a5280b22c010b710cdeec33bb

1
lib/pages/send_view/frost_ms/frost_send_view.dart
View file

@ -92,7 +92,6 @@ class _FrostSendViewState extends ConsumerState<FrostSendView> {
final txData = await wallet.frostCreateSignConfig(
txData: TxData(recipients: recipients),
changeAddress: (await wallet.getCurrentReceivingAddress())!.value,
feePerWeight: customFeeRate,
);

9
lib/services/frost.dart
View file

@ -284,7 +284,13 @@ abstract class Frost {
static String createSignConfig({
required int network,
required List<({UTXO utxo, Uint8List scriptPubKey})> inputs,
required List<
({
UTXO utxo,
Uint8List scriptPubKey,
AddressDerivationData addressDerivationData
})>
inputs,
required List<({String address, Amount amount, bool isChange})> outputs,
required String changeAddress,
required int feePerWeight,
@ -299,6 +305,7 @@ abstract class Frost {
vout: e.utxo.vout,
value: e.utxo.value,
scriptPubKey: e.scriptPubKey,
addressDerivationData: e.addressDerivationData,
),
)
.toList(),

16
lib/wallets/crypto_currency/coins/bitcoin_frost.dart
View file

@ -127,9 +127,21 @@ class BitcoinFrost extends FrostCurrency {
);
@override
String pubKeyToScriptHash({required Uint8List pubKey}) {
Uint8List addressToPubkey({required String address}) {
try {
return Bip39HDCurrency.convertBytesToScriptHash(pubKey);
final addr = coinlib.Address.fromString(address, networkParams);
return addr.program.script.compiled;
} catch (e) {
rethrow;
}
}
@override
String addressToScriptHash({required String address}) {
try {
return Bip39HDCurrency.convertBytesToScriptHash(
addressToPubkey(address: address),
);
} catch (e) {
rethrow;
}

6
lib/wallets/crypto_currency/intermediate/frost_currency.dart
View file

@ -6,7 +6,11 @@ import '../crypto_currency.dart';
abstract class FrostCurrency extends CryptoCurrency {
FrostCurrency(super.network);
String pubKeyToScriptHash({required Uint8List pubKey});
// String pubKeyToScriptHash({required Uint8List pubKey});
String addressToScriptHash({required String address});
Uint8List addressToPubkey({required String address});
Amount get dustLimit;
}

585
lib/wallets/wallet/impl/bitcoin_frost_wallet.dart
View file

@ -1,10 +1,13 @@
import 'dart:async';
import 'dart:ffi';
import 'dart:math';
import 'package:flutter/foundation.dart';
import 'package:frostdart/frostdart.dart' as frost;
import 'package:frostdart/frostdart_bindings_generated.dart';
import 'package:frostdart/util.dart';
import 'package:isar/isar.dart';
import '../../../electrumx_rpc/cached_electrumx_client.dart';
import '../../../electrumx_rpc/electrumx_client.dart';
import '../../../models/balance.dart';
@ -24,10 +27,13 @@ import '../../../utilities/logger.dart';
import '../../crypto_currency/crypto_currency.dart';
import '../../crypto_currency/intermediate/frost_currency.dart';
import '../../isar/models/frost_wallet_info.dart';
import '../../isar/models/wallet_info.dart';
import '../../models/tx_data.dart';
import '../wallet.dart';
import '../wallet_mixin_interfaces/multi_address_interface.dart';
class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T>
with MultiAddressInterface {
BitcoinFrostWallet(CryptoCurrencyNetwork network)
: super(BitcoinFrost(network) as T);
@ -77,25 +83,10 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
await mainDB.isar.frostWalletInfo.put(frostWalletInfo);
});
final keys = frost.deserializeKeys(keys: serializedKeys);
final addressString = frost.addressForKeys(
network: cryptoCurrency.network == CryptoCurrencyNetwork.main
? Network.Mainnet
: Network.Testnet,
keys: keys,
);
final publicKey = frost.scriptPubKeyForKeys(keys: keys);
final address = Address(
walletId: info.walletId,
value: addressString,
publicKey: publicKey.toUint8ListFromHex,
derivationIndex: 0,
derivationPath: null,
subType: AddressSubType.receiving,
type: AddressType.unknown,
final address = await _generateAddress(
change: 0,
index: 0,
serializedKeys: serializedKeys,
);
await mainDB.putAddresses([address]);
@ -110,7 +101,6 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
Future<TxData> frostCreateSignConfig({
required TxData txData,
required String changeAddress,
required int feePerWeight,
}) async {
try {
@ -163,31 +153,41 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
}
}
final serializedKeys = await getSerializedKeys();
final keys = frost.deserializeKeys(keys: serializedKeys!);
final int network = cryptoCurrency.network == CryptoCurrencyNetwork.main
? Network.Mainnet
: Network.Testnet;
final publicKey = frost
.scriptPubKeyForKeys(
keys: keys,
)
.toUint8ListFromHex;
final List<
({
UTXO utxo,
Uint8List scriptPubKey,
({int account, int index, bool change}) addressDerivationData
})> inputs = [];
for (final utxo in utxosToUse) {
final dData = await getDerivationData(
utxo.address,
);
final publicKey = cryptoCurrency.addressToPubkey(
address: utxo.address!,
);
inputs.add(
(
utxo: utxo,
scriptPubKey: publicKey,
addressDerivationData: dData,
),
);
}
await checkChangeAddressForTransactions();
final changeAddress = await getCurrentChangeAddress();
final config = Frost.createSignConfig(
network: network,
inputs: utxosToUse
.map(
(e) => (
utxo: e,
scriptPubKey: publicKey,
),
)
.toList(),
inputs: inputs,
outputs: txData.recipients!,
changeAddress: (await getCurrentReceivingAddress())!.value,
changeAddress: changeAddress!.value,
feePerWeight: feePerWeight,
);
@ -197,6 +197,44 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
}
}
Future<({int account, int index, bool change})> getDerivationData(
String? address,
) async {
if (address == null) {
throw Exception("Missing address required for FROST signing");
}
final addr = await mainDB.getAddress(walletId, address);
if (addr == null) {
throw Exception("Missing address in DB required for FROST signing");
}
final dPath = addr.derivationPath?.value ?? "0/0/0";
try {
final components = dPath.split("/").map((e) => int.parse(e)).toList();
if (components.length != 3) {
throw Exception(
"Unexpected derivation data `$components` for FROST signing",
);
}
if (components[1] != 0 && components[1] != 1) {
throw Exception(
"${components[1]} must be 1 or 0 for change",
);
}
return (
account: components[0],
change: components[1] == 1,
index: components[2],
);
} catch (_) {
rethrow;
}
}
Future<
({
Pointer<TransactionSignMachineWrapper> machinePtr,
@ -324,16 +362,28 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
@override
Future<void> updateTransactions() async {
final myAddress = (await getCurrentReceivingAddress())!;
// Get all addresses.
final List<Address> allAddressesOld =
await _fetchAddressesForElectrumXScan();
final scriptHash = cryptoCurrency.pubKeyToScriptHash(
pubKey: Uint8List.fromList(myAddress.publicKey),
);
final allTxHashes =
(await electrumXClient.getHistory(scripthash: scriptHash)).toSet();
// Separate receiving and change addresses.
final Set<String> receivingAddresses = allAddressesOld
.where((e) => e.subType == AddressSubType.receiving)
.map((e) => e.value)
.toSet();
final Set<String> changeAddresses = allAddressesOld
.where((e) => e.subType == AddressSubType.change)
.map((e) => e.value)
.toSet();
// Remove duplicates.
final allAddressesSet = {...receivingAddresses, ...changeAddresses};
final currentHeight = await chainHeight;
final coin = info.coin;
// Fetch history from ElectrumX.
final List<Map<String, dynamic>> allTxHashes =
await _fetchHistory(allAddressesSet);
final List<Map<String, dynamic>> allTransactions = [];
@ -350,7 +400,7 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
final tx = await electrumXCachedClient.getTransaction(
txHash: txHash["tx_hash"] as String,
verbose: true,
cryptoCurrency: coin,
cryptoCurrency: cryptoCurrency,
);
if (!_duplicateTxCheck(allTransactions, tx["txid"] as String)) {
@ -371,6 +421,7 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
// Parse inputs.
BigInt amountReceivedInThisWallet = BigInt.zero;
BigInt changeAmountReceivedInThisWallet = BigInt.zero;
final List<InputV2> inputs = [];
for (final jsonInput in txData["vin"] as List) {
final map = Map<String, dynamic>.from(jsonInput as Map);
@ -421,7 +472,7 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
);
// Check if input was from this wallet.
if (input.addresses.contains(myAddress.value)) {
if (allAddressesSet.intersection(input.addresses.toSet()).isNotEmpty) {
wasSentFromThisWallet = true;
input = input.copyWith(walletOwns: true);
}
@ -441,10 +492,18 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
);
// If output was to my wallet, add value to amount received.
if (output.addresses.contains(myAddress.value)) {
if (receivingAddresses
.intersection(output.addresses.toSet())
.isNotEmpty) {
wasReceivedInThisWallet = true;
amountReceivedInThisWallet += output.value;
output = output.copyWith(walletOwns: true);
} else if (changeAddresses
.intersection(output.addresses.toSet())
.isNotEmpty) {
wasReceivedInThisWallet = true;
changeAmountReceivedInThisWallet += output.value;
output = output.copyWith(walletOwns: true);
}
outputs.add(output);
@ -478,7 +537,8 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
type = TransactionType.outgoing;
if (wasReceivedInThisWallet) {
if (amountReceivedInThisWallet == totalOut) {
if (changeAmountReceivedInThisWallet + amountReceivedInThisWallet ==
totalOut) {
// Definitely sent all to self.
type = TransactionType.sentToSelf;
} else if (amountReceivedInThisWallet == BigInt.zero) {
@ -488,6 +548,8 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
} else if (wasReceivedInThisWallet) {
// Only found outputs owned by this wallet.
type = TransactionType.incoming;
// TODO: [prio=none] Check for special Bitcoin outputs like ordinals.
} else {
Logging.instance.log(
"Unexpected tx found (ignoring it): $txData",
@ -524,25 +586,10 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
if (address == null) {
final serializedKeys = await getSerializedKeys();
if (serializedKeys != null) {
final keys = frost.deserializeKeys(keys: serializedKeys);
final addressString = frost.addressForKeys(
network: cryptoCurrency.network == CryptoCurrencyNetwork.main
? Network.Mainnet
: Network.Testnet,
keys: keys,
);
final publicKey = frost.scriptPubKeyForKeys(keys: keys);
final address = Address(
walletId: walletId,
value: addressString,
publicKey: publicKey.toUint8ListFromHex,
derivationIndex: 0,
derivationPath: null,
subType: AddressSubType.receiving,
type: AddressType.frostMS,
final address = await _generateAddress(
change: 0,
index: 0,
serializedKeys: serializedKeys,
);
await mainDB.updateOrPutAddresses([address]);
@ -729,30 +776,79 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
await mainDB.deleteWalletBlockchainData(walletId);
}
final keys = frost.deserializeKeys(keys: serializedKeys!);
await _saveSerializedKeys(serializedKeys!);
await _saveMultisigConfig(multisigConfig!);
final addressString = frost.addressForKeys(
network: cryptoCurrency.network == CryptoCurrencyNetwork.main
? Network.Mainnet
: Network.Testnet,
keys: keys,
const receiveChain = 0;
const changeChain = 1;
final List<Future<({int index, List<Address> addresses})>>
receiveFutures = [
_checkGapsLinearly(
serializedKeys,
receiveChain,
),
];
final List<Future<({int index, List<Address> addresses})>>
changeFutures = [
_checkGapsLinearly(
serializedKeys,
changeChain,
),
];
// io limitations may require running these linearly instead
final futuresResult = await Future.wait([
Future.wait(receiveFutures),
Future.wait(changeFutures),
]);
final receiveResults = futuresResult[0];
final changeResults = futuresResult[1];
final List<Address> addressesToStore = [];
int highestReceivingIndexWithHistory = 0;
for (final tuple in receiveResults) {
if (tuple.addresses.isEmpty) {
await checkReceivingAddressForTransactions();
} else {
highestReceivingIndexWithHistory = max(
tuple.index,
highestReceivingIndexWithHistory,
);
addressesToStore.addAll(tuple.addresses);
}
}
int highestChangeIndexWithHistory = 0;
// If restoring a wallet that never sent any funds with change, then set changeArray
// manually. If we didn't do this, it'd store an empty array.
for (final tuple in changeResults) {
if (tuple.addresses.isEmpty) {
await checkChangeAddressForTransactions();
} else {
highestChangeIndexWithHistory = max(
tuple.index,
highestChangeIndexWithHistory,
);
addressesToStore.addAll(tuple.addresses);
}
}
// remove extra addresses to help minimize risk of creating a large gap
addressesToStore.removeWhere(
(e) =>
e.subType == AddressSubType.change &&
e.derivationIndex > highestChangeIndexWithHistory,
);
addressesToStore.removeWhere(
(e) =>
e.subType == AddressSubType.receiving &&
e.derivationIndex > highestReceivingIndexWithHistory,
);
final publicKey = frost.scriptPubKeyForKeys(keys: keys);
final address = Address(
walletId: walletId,
value: addressString,
publicKey: publicKey.toUint8ListFromHex,
derivationIndex: 0,
derivationPath: null,
subType: AddressSubType.receiving,
type: AddressType.frostMS,
);
await mainDB.updateOrPutAddresses([address]);
await mainDB.updateOrPutAddresses(addressesToStore);
});
GlobalEventBus.instance.fire(
@ -868,23 +964,31 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
@override
Future<bool> updateUTXOs() async {
final address = await getCurrentReceivingAddress();
final allAddresses = await _fetchAddressesForElectrumXScan();
try {
final scriptHash = cryptoCurrency.pubKeyToScriptHash(
pubKey: Uint8List.fromList(address!.publicKey),
);
final fetchedUtxoList = <List<Map<String, dynamic>>>[];
for (int i = 0; i < allAddresses.length; i++) {
final scriptHash = cryptoCurrency.addressToScriptHash(
address: allAddresses[i].value,
);
final utxos = await electrumXClient.getUTXOs(scripthash: scriptHash);
final utxos = await electrumXClient.getUTXOs(scripthash: scriptHash);
if (utxos.isNotEmpty) {
fetchedUtxoList.add(utxos);
}
}
final List<UTXO> outputArray = [];
for (int i = 0; i < utxos.length; i++) {
final utxo = await _parseUTXO(
jsonUTXO: utxos[i],
);
for (int i = 0; i < fetchedUtxoList.length; i++) {
for (int j = 0; j < fetchedUtxoList[i].length; j++) {
final utxo = await _parseUTXO(
jsonUTXO: fetchedUtxoList[i][j],
);
outputArray.add(utxo);
outputArray.add(utxo);
}
}
return await mainDB.updateUTXOs(walletId, outputArray);
@ -1174,4 +1278,291 @@ class BitcoinFrostWallet<T extends FrostCurrency> extends Wallet<T> {
return utxo;
}
@override
Future<void> checkChangeAddressForTransactions() async {
try {
final currentChange = await getCurrentChangeAddress();
final bool needsGenerate;
if (currentChange == null) {
// no addresses in db yet for some reason.
// Should not happen at this point...
needsGenerate = true;
} else {
final txCount = await _fetchTxCount(address: currentChange);
needsGenerate = txCount > 0 || currentChange.derivationIndex < 0;
}
if (needsGenerate) {
await generateNewChangeAddress();
// TODO: get rid of this? Could cause problems (long loading/infinite loop or something)
// keep checking until address with no tx history is set as current
await checkChangeAddressForTransactions();
}
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from _checkChangeAddressForTransactions"
"($cryptoCurrency): $e\n$s",
level: LogLevel.Error,
);
rethrow;
}
}
@override
Future<void> checkReceivingAddressForTransactions() async {
if (info.otherData[WalletInfoKeys.reuseAddress] == true) {
try {
throw Exception();
} catch (_, s) {
Logging.instance.log(
"checkReceivingAddressForTransactions called but reuse address flag set: $s",
level: LogLevel.Error,
);
}
}
try {
final currentReceiving = await getCurrentReceivingAddress();
final bool needsGenerate;
if (currentReceiving == null) {
// no addresses in db yet for some reason.
// Should not happen at this point...
needsGenerate = true;
} else {
final txCount = await _fetchTxCount(address: currentReceiving);
needsGenerate = txCount > 0 || currentReceiving.derivationIndex < 0;
}
if (needsGenerate) {
await generateNewReceivingAddress();
// TODO: [prio=low] Make sure we scan all addresses but only show one.
if (info.otherData[WalletInfoKeys.reuseAddress] != true) {
// TODO: get rid of this? Could cause problems (long loading/infinite loop or something)
// keep checking until address with no tx history is set as current
await checkReceivingAddressForTransactions();
}
}
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from _checkReceivingAddressForTransactions"
"($cryptoCurrency): $e\n$s",
level: LogLevel.Error,
);
rethrow;
}
}
@override
Future<void> generateNewChangeAddress() async {
final current = await getCurrentChangeAddress();
int index = current == null ? 0 : current.derivationIndex + 1;
const chain = 1; // change address
final serializedKeys = (await getSerializedKeys())!;
Address? address;
while (address == null) {
try {
address = await _generateAddress(
change: chain,
index: index,
serializedKeys: serializedKeys,
);
} on FrostdartException catch (e) {
if (e.errorCode == 72) {
// rust doesn't like the addressDerivationData
index++;
continue;
}
}
}
await mainDB.updateOrPutAddresses([address]);
}
@override
Future<void> generateNewReceivingAddress() async {
final current = await getCurrentReceivingAddress();
int index = current == null ? 0 : current.derivationIndex + 1;
const chain = 0; // receiving address
final serializedKeys = (await getSerializedKeys())!;
Address? address;
while (address == null) {
try {
address = await _generateAddress(
change: chain,
index: index,
serializedKeys: serializedKeys,
);
} on FrostdartException catch (e) {
if (e.errorCode == 72) {
// rust doesn't like the addressDerivationData
index++;
continue;
}
}
}
await mainDB.updateOrPutAddresses([address]);
await info.updateReceivingAddress(
newAddress: address.value,
isar: mainDB.isar,
);
}
/// Can and will often throw unless [index], [change], and [account] are zero.
/// Caller MUST handle exception!
Future<Address> _generateAddress({
int account = 0,
required int change,
required int index,
required String serializedKeys,
}) async {
final addressDerivationData = (
account: account,
change: change == 1,
index: index,
);
final keys = frost.deserializeKeys(keys: serializedKeys);
final addressString = frost.addressForKeys(
network: cryptoCurrency.network == CryptoCurrencyNetwork.main
? Network.Mainnet
: Network.Testnet,
keys: keys,
addressDerivationData: addressDerivationData,
);
return Address(
walletId: info.walletId,
value: addressString,
publicKey: cryptoCurrency.addressToPubkey(address: addressString),
derivationIndex: index,
derivationPath: DerivationPath()..value = "$account/$change/$index",
subType: change == 0
? AddressSubType.receiving
: change == 1
? AddressSubType.change
: AddressSubType.unknown,
type: AddressType.frostMS,
);
}
Future<({List<Address> addresses, int index})> _checkGapsLinearly(
String serializedKeys,
int chain,
) async {
final List<Address> addressArray = [];
int gapCounter = 0;
int index = 0;
for (; gapCounter < 20; index++) {
Logging.instance.log(
"Frost index: $index, \t GapCounter chain=$chain: $gapCounter",
level: LogLevel.Info,
);
Address? address;
while (address == null) {
try {
address = await _generateAddress(
change: chain,
index: index,
serializedKeys: serializedKeys,
);
} on FrostdartException catch (e) {
if (e.errorCode == 72) {
// rust doesn't like the addressDerivationData
index++;
continue;
}
}
}
// get address tx count
final count = await _fetchTxCount(
address: address!,
);
// check and add appropriate addresses
if (count > 0) {
// add address to array
addressArray.add(address!);
// reset counter
gapCounter = 0;
// add info to derivations
} else {
// increase counter when no tx history found
gapCounter++;
}
}
return (addresses: addressArray, index: index);
}
Future<int> _fetchTxCount({required Address address}) async {
final transactions = await electrumXClient.getHistory(
scripthash: cryptoCurrency.addressToScriptHash(
address: address.value,
),
);
return transactions.length;
}
Future<List<Address>> _fetchAddressesForElectrumXScan() async {
final allAddresses = await mainDB
.getAddresses(walletId)
.filter()
.not()
.group(
(q) => q
.typeEqualTo(AddressType.nonWallet)
.or()
.subTypeEqualTo(AddressSubType.nonWallet),
)
.findAll();
return allAddresses;
}
Future<List<Map<String, dynamic>>> _fetchHistory(
Iterable<String> allAddresses,
) async {
try {
final List<Map<String, dynamic>> allTxHashes = [];
for (int i = 0; i < allAddresses.length; i++) {
final addressString = allAddresses.elementAt(i);
final scriptHash = cryptoCurrency.addressToScriptHash(
address: addressString,
);
final response = await electrumXClient.getHistory(
scripthash: scriptHash,
);
for (int j = 0; j < response.length; j++) {
response[j]["address"] = addressString;
if (!allTxHashes.contains(response[j])) {
allTxHashes.add(response[j]);
}
}
}
return allTxHashes;
} catch (e, s) {
Logging.instance.log(
"$runtimeType._fetchHistory: $e\n$s",
level: LogLevel.Error,
);
rethrow;
}
}
}