| 1 | import 'dart:async'; |
| 2 | import 'dart:convert'; |
| 3 | import 'dart:math'; |
| 4 | import 'package:collection/collection.dart'; |
| 5 | import 'package:crypto/crypto.dart'; |
| 6 | import 'package:cw_bitcoin/address_from_output.dart'; |
| 7 | import 'package:cw_bitcoin/bitcoin_transaction_credentials.dart'; |
| 8 | import 'package:cw_core/amount/money.dart'; |
| 9 | import 'package:cw_core/cake_hive.dart'; |
| 10 | import 'package:cw_core/mweb_utxo.dart'; |
| 11 | import 'package:cw_core/unspent_coin_type.dart'; |
| 12 | import 'package:cw_core/utils/print_verbose.dart'; |
| 13 | import 'package:cw_core/node.dart'; |
| 14 | import 'package:cw_mweb/mwebd.pbgrpc.dart'; |
| 15 | import 'package:fixnum/fixnum.dart'; |
| 16 | import 'package:bip39/bip39.dart' as bip39; |
| 17 | import 'package:bitcoin_base/bitcoin_base.dart'; |
| 18 | import 'package:bitcoin_base/src/crypto/keypair/sign_utils.dart'; |
| 19 | import 'package:blockchain_utils/blockchain_utils.dart'; |
| 20 | import 'package:blockchain_utils/signer/ecdsa_signing_key.dart'; |
| 21 | import 'package:convert/convert.dart' as convert; |
| 22 | import 'package:cw_bitcoin/bitcoin_address_record.dart'; |
| 23 | import 'package:cw_bitcoin/bitcoin_mnemonic.dart'; |
| 24 | import 'package:cw_bitcoin/bitcoin_transaction_priority.dart'; |
| 25 | import 'package:cw_bitcoin/bitcoin_unspent.dart'; |
| 26 | import 'package:cw_bitcoin/electrum_balance.dart'; |
| 27 | import 'package:cw_bitcoin/electrum_derivations.dart'; |
| 28 | import 'package:cw_bitcoin/electrum_transaction_info.dart'; |
| 29 | import 'package:cw_bitcoin/electrum_wallet.dart'; |
| 30 | import 'package:cw_bitcoin/electrum_wallet_snapshot.dart'; |
| 31 | import 'package:cw_bitcoin/hardware/bitcoin_hardware_wallet_service.dart'; |
| 32 | import 'package:cw_bitcoin/litecoin_wallet_addresses.dart'; |
| 33 | import 'package:cw_bitcoin/output_ordering.dart'; |
| 34 | import 'package:cw_bitcoin/pending_bitcoin_transaction.dart'; |
| 35 | import 'package:cw_bitcoin/psbt/transaction_builder.dart'; |
| 36 | import 'package:cw_bitcoin/utils.dart'; |
| 37 | import 'package:cw_core/crypto_currency.dart'; |
| 38 | import 'package:cw_core/encryption_file_utils.dart'; |
| 39 | import 'package:cw_core/output_info.dart'; |
| 40 | import 'package:cw_core/pending_transaction.dart'; |
| 41 | import 'package:cw_core/sync_status.dart'; |
| 42 | import 'package:cw_core/transaction_direction.dart'; |
| 43 | import 'package:cw_core/transaction_priority.dart'; |
| 44 | import 'package:cw_core/unspent_coins_info.dart'; |
| 45 | import 'package:cw_core/wallet_info.dart'; |
| 46 | import 'package:cw_core/wallet_keys_file.dart'; |
| 47 | import 'package:cw_core/wallet_type.dart'; |
| 48 | import 'package:cw_mweb/cw_mweb.dart'; |
| 49 | import 'package:flutter/foundation.dart'; |
| 50 | import 'package:grpc/grpc.dart'; |
| 51 | import 'package:hive/hive.dart'; |
| 52 | import 'package:mobx/mobx.dart'; |
| 53 | import 'package:pointycastle/ecc/api.dart'; |
| 54 | import 'package:pointycastle/ecc/curves/secp256k1.dart'; |
| 55 | import 'package:shared_preferences/shared_preferences.dart'; |
| 56 | import 'package:ur/cbor_lite.dart'; |
| 57 | import 'package:ur/ur.dart'; |
| 58 | import 'package:ur/ur_decoder.dart'; |
| 59 | |
| 60 | part 'litecoin_wallet.g.dart'; |
| 61 | |
| 62 | class LitecoinWallet = LitecoinWalletBase with _$LitecoinWallet; |
| 63 | |
| 64 | abstract class LitecoinWalletBase extends ElectrumWallet with Store { |
| 65 | LitecoinWalletBase({ |
| 66 | required String password, |
| 67 | required WalletInfo walletInfo, |
| 68 | required DerivationInfo derivationInfo, |
| 69 | required Box<UnspentCoinsInfo> unspentCoinsInfo, |
| 70 | required EncryptionFileUtils encryptionFileUtils, |
| 71 | Uint8List? seedBytes, |
| 72 | String? mnemonic, |
| 73 | String? xpub, |
| 74 | this.scanSecretOverride, |
| 75 | this.spendPubkeyOverride, |
| 76 | String? passphrase, |
| 77 | String? addressPageType, |
| 78 | List<BitcoinAddressRecord>? initialAddresses, |
| 79 | List<BitcoinAddressRecord>? initialMwebAddresses, |
| 80 | ElectrumBalance? initialBalance, |
| 81 | Map<String, int>? initialRegularAddressIndex, |
| 82 | Map<String, int>? initialChangeAddressIndex, |
| 83 | int? initialMwebHeight, |
| 84 | bool? alwaysScan, |
| 85 | }) : super( |
| 86 | mnemonic: mnemonic, |
| 87 | password: password, |
| 88 | passphrase: passphrase, |
| 89 | xpub: xpub, |
| 90 | walletInfo: walletInfo, |
| 91 | derivationInfo: derivationInfo, |
| 92 | unspentCoinsInfo: unspentCoinsInfo, |
| 93 | network: LitecoinNetwork.mainnet, |
| 94 | initialAddresses: initialAddresses, |
| 95 | initialBalance: initialBalance, |
| 96 | seedBytes: seedBytes, |
| 97 | encryptionFileUtils: encryptionFileUtils, |
| 98 | currency: CryptoCurrency.ltc, |
| 99 | alwaysScan: alwaysScan, |
| 100 | ) { |
| 101 | if (seedBytes != null) { |
| 102 | mwebHd = |
| 103 | Bip32Slip10Secp256k1.fromSeed(seedBytes).derivePath("m/1000'") as Bip32Slip10Secp256k1; |
| 104 | mwebEnabled = alwaysScan ?? false; |
| 105 | } else if (scanSecretOverride != null && spendPubkeyOverride != null) { |
| 106 | mwebHd = null; |
| 107 | mwebEnabled = alwaysScan ?? false; |
| 108 | } else { |
| 109 | mwebHd = null; |
| 110 | mwebEnabled = false; |
| 111 | } |
| 112 | walletAddresses = LitecoinWalletAddresses( |
| 113 | walletInfo, |
| 114 | initialAddresses: initialAddresses, |
| 115 | initialRegularAddressIndex: initialRegularAddressIndex, |
| 116 | initialChangeAddressIndex: initialChangeAddressIndex, |
| 117 | initialMwebAddresses: initialMwebAddresses, |
| 118 | mainHdByType: mainHdByType, |
| 119 | sideHdByType: sideHdByType, |
| 120 | legacyMainHd: mainHd, |
| 121 | legacySideHd: sideHd, |
| 122 | network: network, |
| 123 | mwebHd: mwebHd, |
| 124 | mwebEnabled: mwebEnabled, |
| 125 | scanSecretOverride: scanSecretOverride, |
| 126 | spendPubkeyOverride: spendPubkeyOverride, |
| 127 | isHardwareWallet: walletInfo.isHardwareWallet, |
| 128 | ); |
| 129 | autorun((_) { |
| 130 | this.walletAddresses.isEnabledAutoGenerateSubaddress = this.isEnabledAutoGenerateSubaddress; |
| 131 | }); |
| 132 | reaction((_) => mwebSyncStatus, (status) async { |
| 133 | if (mwebSyncStatus is FailedSyncStatus) { |
| 134 | // we failed to connect to mweb, check if we are connected to the litecoin node: |
| 135 | late int nodeHeight; |
| 136 | try { |
| 137 | nodeHeight = await electrumClient.getCurrentBlockChainTip() ?? 0; |
| 138 | } catch (_) { |
| 139 | nodeHeight = 0; |
| 140 | } |
| 141 | |
| 142 | if (nodeHeight == 0) { |
| 143 | // we aren't connected to the litecoin node, so the current electrum_wallet reactions will take care of this case for us |
| 144 | } else { |
| 145 | // we're connected to the litecoin node, but we failed to connect to mweb, try again after a few seconds: |
| 146 | await CwMweb.stop(); |
| 147 | await Future.delayed(const Duration(seconds: 5)); |
| 148 | startSync(); |
| 149 | } |
| 150 | } else if (mwebSyncStatus is SyncingSyncStatus) { |
| 151 | syncStatus = mwebSyncStatus; |
| 152 | } else if (mwebSyncStatus is SyncronizingSyncStatus) { |
| 153 | if (syncStatus is! SyncronizingSyncStatus) { |
| 154 | syncStatus = mwebSyncStatus; |
| 155 | } |
| 156 | } else if (mwebSyncStatus is SyncedSyncStatus) { |
| 157 | if (syncStatus is! SyncedSyncStatus) { |
| 158 | syncStatus = mwebSyncStatus; |
| 159 | } |
| 160 | } |
| 161 | }); |
| 162 | } |
| 163 | |
| 164 | late final Bip32Slip10Secp256k1? mwebHd; |
| 165 | late final Box<MwebUtxo> mwebUtxosBox; |
| 166 | Timer? _syncTimer; |
| 167 | Timer? _feeRatesTimer; |
| 168 | Timer? _processingTimer; |
| 169 | StreamSubscription<Utxo>? _utxoStream; |
| 170 | late bool mwebEnabled; |
| 171 | bool processingUtxos = false; |
| 172 | |
| 173 | @observable |
| 174 | SyncStatus mwebSyncStatus = NotConnectedSyncStatus(); |
| 175 | |
| 176 | @override |
| 177 | bool get hasRescan => true; |
| 178 | |
| 179 | final String? scanSecretOverride; |
| 180 | final String? spendPubkeyOverride; |
| 181 | List<int> get scanSecret => (scanSecretOverride != null && scanSecretOverride?.isNotEmpty == true) |
| 182 | ? hex.decode(scanSecretOverride!) |
| 183 | : mwebHd?.childKey(Bip32KeyIndex(0x80000000)).privateKey.privKey.raw ?? List.filled(32, 0); |
| 184 | |
| 185 | List<int> get spendSecret => |
| 186 | mwebHd?.childKey(Bip32KeyIndex(0x80000001)).privateKey.privKey.raw ?? List.filled(32, 0); |
| 187 | |
| 188 | static Future<LitecoinWallet> create( |
| 189 | {required String mnemonic, |
| 190 | required String password, |
| 191 | required WalletInfo walletInfo, |
| 192 | required DerivationInfo derivationInfo, |
| 193 | required Box<UnspentCoinsInfo> unspentCoinsInfo, |
| 194 | required EncryptionFileUtils encryptionFileUtils, |
| 195 | String? passphrase, |
| 196 | String? addressPageType, |
| 197 | List<BitcoinAddressRecord>? initialAddresses, |
| 198 | List<BitcoinAddressRecord>? initialMwebAddresses, |
| 199 | ElectrumBalance? initialBalance, |
| 200 | Map<String, int>? initialRegularAddressIndex, |
| 201 | Map<String, int>? initialChangeAddressIndex}) async { |
| 202 | late Uint8List seedBytes; |
| 203 | |
| 204 | switch (derivationInfo.derivationType) { |
| 205 | case DerivationType.bip39: |
| 206 | seedBytes = await bip39.mnemonicToSeed( |
| 207 | mnemonic, |
| 208 | passphrase: passphrase ?? "", |
| 209 | ); |
| 210 | break; |
| 211 | case DerivationType.electrum: |
| 212 | default: |
| 213 | seedBytes = await mnemonicToSeedBytes(mnemonic, passphrase: passphrase ?? ""); |
| 214 | break; |
| 215 | } |
| 216 | return LitecoinWallet( |
| 217 | mnemonic: mnemonic, |
| 218 | password: password, |
| 219 | walletInfo: walletInfo, |
| 220 | derivationInfo: derivationInfo, |
| 221 | unspentCoinsInfo: unspentCoinsInfo, |
| 222 | initialAddresses: initialAddresses, |
| 223 | initialMwebAddresses: initialMwebAddresses, |
| 224 | initialBalance: initialBalance, |
| 225 | encryptionFileUtils: encryptionFileUtils, |
| 226 | passphrase: passphrase, |
| 227 | seedBytes: seedBytes, |
| 228 | initialRegularAddressIndex: initialRegularAddressIndex, |
| 229 | initialChangeAddressIndex: initialChangeAddressIndex, |
| 230 | addressPageType: addressPageType, |
| 231 | ); |
| 232 | } |
| 233 | |
| 234 | @override |
| 235 | WalletKeysData get walletKeysData => WalletKeysData( |
| 236 | mnemonic: seed, |
| 237 | xPub: xpub, |
| 238 | passphrase: passphrase, |
| 239 | scanSecret: scanSecretOverride, |
| 240 | spendPubkey: spendPubkeyOverride); |
| 241 | |
| 242 | static Future<LitecoinWallet> open({ |
| 243 | required String name, |
| 244 | required WalletInfo walletInfo, |
| 245 | required Box<UnspentCoinsInfo> unspentCoinsInfo, |
| 246 | required String password, |
| 247 | required EncryptionFileUtils encryptionFileUtils, |
| 248 | }) async { |
| 249 | final hasKeysFile = await WalletKeysFile.hasKeysFile(name, walletInfo.type); |
| 250 | |
| 251 | ElectrumWalletSnapshot? snp = null; |
| 252 | |
| 253 | try { |
| 254 | snp = await ElectrumWalletSnapshot.load( |
| 255 | encryptionFileUtils, |
| 256 | name, |
| 257 | walletInfo.type, |
| 258 | password, |
| 259 | LitecoinNetwork.mainnet, |
| 260 | ); |
| 261 | } catch (e) { |
| 262 | if (!hasKeysFile) rethrow; |
| 263 | } |
| 264 | |
| 265 | final WalletKeysData keysData; |
| 266 | // Migrate wallet from the old scheme to then new .keys file scheme |
| 267 | if (!hasKeysFile) { |
| 268 | keysData = |
| 269 | WalletKeysData(mnemonic: snp!.mnemonic, xPub: snp.xpub, passphrase: snp.passphrase); |
| 270 | } else { |
| 271 | keysData = await WalletKeysFile.readKeysFile( |
| 272 | name, |
| 273 | walletInfo.type, |
| 274 | password, |
| 275 | encryptionFileUtils, |
| 276 | ); |
| 277 | } |
| 278 | |
| 279 | final derivationInfo = await walletInfo.getDerivationInfo(); |
| 280 | // set the default if not present: |
| 281 | derivationInfo.derivationPath ??= snp?.derivationPath ?? electrum_path; |
| 282 | derivationInfo.derivationType ??= snp?.derivationType ?? DerivationType.electrum; |
| 283 | if (derivationInfo.derivationType == DerivationType.unknown) { |
| 284 | if (snp?.derivationPath == electrum_path || snp?.derivationType == DerivationType.electrum) { |
| 285 | derivationInfo.derivationPath = electrum_path; |
| 286 | derivationInfo.derivationType = DerivationType.electrum; |
| 287 | } else { |
| 288 | derivationInfo.derivationPath = segwit_path; |
| 289 | derivationInfo.derivationType = DerivationType.bip39; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | Uint8List? seedBytes = null; |
| 294 | final mnemonic = keysData.mnemonic; |
| 295 | final passphrase = keysData.passphrase; |
| 296 | |
| 297 | if (mnemonic != null) { |
| 298 | switch (derivationInfo.derivationType) { |
| 299 | case DerivationType.bip39: |
| 300 | seedBytes = await bip39.mnemonicToSeed( |
| 301 | mnemonic, |
| 302 | passphrase: passphrase ?? "", |
| 303 | ); |
| 304 | break; |
| 305 | case DerivationType.electrum: |
| 306 | default: |
| 307 | seedBytes = await mnemonicToSeedBytes(mnemonic, passphrase: passphrase ?? ""); |
| 308 | break; |
| 309 | } |
| 310 | } |
| 311 | await derivationInfo.save(); |
| 312 | |
| 313 | return LitecoinWallet( |
| 314 | mnemonic: keysData.mnemonic, |
| 315 | xpub: keysData.xPub, |
| 316 | scanSecretOverride: keysData.scanSecret, |
| 317 | spendPubkeyOverride: keysData.spendPubkey, |
| 318 | password: password, |
| 319 | walletInfo: walletInfo, |
| 320 | derivationInfo: derivationInfo, |
| 321 | unspentCoinsInfo: unspentCoinsInfo, |
| 322 | initialAddresses: snp?.addresses, |
| 323 | initialMwebAddresses: snp?.mwebAddresses, |
| 324 | initialBalance: snp?.balance, |
| 325 | seedBytes: seedBytes, |
| 326 | passphrase: passphrase, |
| 327 | encryptionFileUtils: encryptionFileUtils, |
| 328 | initialRegularAddressIndex: snp?.regularAddressIndex, |
| 329 | initialChangeAddressIndex: snp?.changeAddressIndex, |
| 330 | addressPageType: snp?.addressPageType, |
| 331 | alwaysScan: snp?.alwaysScan, |
| 332 | ); |
| 333 | } |
| 334 | |
| 335 | Future<void> waitForMwebAddresses() async { |
| 336 | printV("waitForMwebAddresses() called!"); |
| 337 | // ensure that we have the full 1000 mweb addresses generated before continuing: |
| 338 | // should no longer be needed, but leaving here just in case |
| 339 | await (walletAddresses as LitecoinWalletAddresses).ensureMwebAddressUpToIndexExists(1020); |
| 340 | } |
| 341 | |
| 342 | @action |
| 343 | @override |
| 344 | Future<void> connectToNode({required Node node}) async { |
| 345 | await super.connectToNode(node: node); |
| 346 | |
| 347 | final prefs = await SharedPreferences.getInstance(); |
| 348 | final mwebNodeUri = prefs.getString("mwebNodeUri") ?? "ltc-electrum.cakewallet.com:9333"; |
| 349 | await CwMweb.setNodeUriOverride(mwebNodeUri); |
| 350 | } |
| 351 | |
| 352 | @action |
| 353 | @override |
| 354 | Future<void> startSync() async { |
| 355 | printV("startSync() called!"); |
| 356 | printV("STARTING SYNC - MWEB ENABLED: $mwebEnabled"); |
| 357 | if (!mwebEnabled) { |
| 358 | try { |
| 359 | // in case we're switching from a litecoin wallet that had mweb enabled |
| 360 | CwMweb.stop(); |
| 361 | } catch (_) {} |
| 362 | super.startSync(); |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | if (mwebSyncStatus is SyncronizingSyncStatus) { |
| 367 | return; |
| 368 | } |
| 369 | |
| 370 | printV("STARTING SYNC - MWEB ENABLED: $mwebEnabled"); |
| 371 | _syncTimer?.cancel(); |
| 372 | try { |
| 373 | mwebSyncStatus = SyncronizingSyncStatus(); |
| 374 | try { |
| 375 | await subscribeForUpdates(); |
| 376 | } catch (e) { |
| 377 | printV("failed to subscribe for updates: $e"); |
| 378 | } |
| 379 | await checkIfBatchSupported(); |
| 380 | updateFeeRates(); |
| 381 | _feeRatesTimer?.cancel(); |
| 382 | _feeRatesTimer = |
| 383 | Timer.periodic(const Duration(minutes: 1), (timer) async => await updateFeeRates()); |
| 384 | |
| 385 | printV("START SYNC FUNCS"); |
| 386 | await waitForMwebAddresses(); |
| 387 | await processMwebUtxos(); |
| 388 | await updateTransactions(); |
| 389 | await updateUnspent(); |
| 390 | await updateBalance(); |
| 391 | } catch (e) { |
| 392 | printV("failed to start mweb sync: $e"); |
| 393 | syncStatus = FailedSyncStatus(); |
| 394 | return; |
| 395 | } |
| 396 | |
| 397 | _syncTimer?.cancel(); |
| 398 | _syncTimer = Timer.periodic(const Duration(milliseconds: 3000), (timer) async { |
| 399 | if (mwebSyncStatus is FailedSyncStatus) { |
| 400 | _syncTimer?.cancel(); |
| 401 | return; |
| 402 | } |
| 403 | |
| 404 | final nodeHeight = |
| 405 | await electrumClient.getCurrentBlockChainTip() ?? 0; // current block height of our node |
| 406 | |
| 407 | if (nodeHeight == 0) { |
| 408 | // we aren't connected to the ltc node yet |
| 409 | if (mwebSyncStatus is! NotConnectedSyncStatus) { |
| 410 | mwebSyncStatus = FailedSyncStatus(error: "litecoin node isn't connected"); |
| 411 | } |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | // update the current chain tip so that confirmation calculations are accurate: |
| 416 | currentChainTip = nodeHeight; |
| 417 | |
| 418 | final resp = await CwMweb.status(StatusRequest()); |
| 419 | |
| 420 | try { |
| 421 | if (resp.blockHeaderHeight < nodeHeight) { |
| 422 | int h = resp.blockHeaderHeight; |
| 423 | mwebSyncStatus = SyncingSyncStatus(nodeHeight - h, h / nodeHeight); |
| 424 | } else if (resp.mwebHeaderHeight < nodeHeight) { |
| 425 | int h = resp.mwebHeaderHeight; |
| 426 | mwebSyncStatus = SyncingSyncStatus(nodeHeight - h, h / nodeHeight); |
| 427 | } else if (resp.mwebUtxosHeight < nodeHeight) { |
| 428 | mwebSyncStatus = SyncingSyncStatus(1, 0.999); |
| 429 | } else { |
| 430 | bool confirmationsUpdated = false; |
| 431 | if (resp.mwebUtxosHeight > walletInfo.restoreHeight) { |
| 432 | await walletInfo.updateRestoreHeight(resp.mwebUtxosHeight); |
| 433 | await checkMwebUtxosSpent(); |
| 434 | // update the confirmations for each transaction: |
| 435 | for (final tx in transactionHistory.transactions.values) { |
| 436 | if (tx.height == null || tx.height == 0) { |
| 437 | // update with first confirmation on next block since it hasn't been confirmed yet: |
| 438 | tx.height = resp.mwebUtxosHeight; |
| 439 | continue; |
| 440 | } |
| 441 | |
| 442 | final confirmations = (resp.mwebUtxosHeight - tx.height!) + 1; |
| 443 | |
| 444 | // if the confirmations haven't changed, skip updating: |
| 445 | if (tx.confirmations == confirmations) continue; |
| 446 | |
| 447 | // if an outgoing tx is now confirmed, delete the utxo from the box (delete the unspent coin): |
| 448 | if (confirmations >= 2 && |
| 449 | tx.direction == TransactionDirection.outgoing && |
| 450 | tx.unspents != null) { |
| 451 | for (var coin in tx.unspents!) { |
| 452 | final utxo = mwebUtxosBox.get(coin.address); |
| 453 | if (utxo != null) { |
| 454 | printV("deleting utxo ${coin.address} @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"); |
| 455 | await mwebUtxosBox.delete(coin.address); |
| 456 | } |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | tx.confirmations = confirmations; |
| 461 | tx.isPending = false; |
| 462 | transactionHistory.addOne(tx); |
| 463 | confirmationsUpdated = true; |
| 464 | } |
| 465 | if (confirmationsUpdated) { |
| 466 | await transactionHistory.save(); |
| 467 | await updateTransactions(); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | // prevent unnecessary reaction triggers: |
| 472 | if (mwebSyncStatus is! SyncedSyncStatus) { |
| 473 | // mwebd is synced, but we could still be processing incoming utxos: |
| 474 | if (!processingUtxos) { |
| 475 | mwebSyncStatus = SyncedSyncStatus(); |
| 476 | } |
| 477 | } |
| 478 | return; |
| 479 | } |
| 480 | } catch (e) { |
| 481 | printV("error syncing: $e"); |
| 482 | mwebSyncStatus = FailedSyncStatus(error: e.toString()); |
| 483 | } |
| 484 | }); |
| 485 | } |
| 486 | |
| 487 | @action |
| 488 | @override |
| 489 | Future<void> stopSync() async { |
| 490 | printV("stopSync() called!"); |
| 491 | _syncTimer?.cancel(); |
| 492 | _utxoStream?.cancel(); |
| 493 | _feeRatesTimer?.cancel(); |
| 494 | await CwMweb.stop(); |
| 495 | printV("stopped syncing!"); |
| 496 | } |
| 497 | |
| 498 | Future<void> initMwebUtxosBox() async { |
| 499 | final boxName = "${walletInfo.name.replaceAll(" ", "_")}_${MwebUtxo.boxName}"; |
| 500 | |
| 501 | mwebUtxosBox = await CakeHive.openBox<MwebUtxo>(boxName); |
| 502 | } |
| 503 | |
| 504 | static Future<void> copyMwebBox({ |
| 505 | required String fromName, |
| 506 | required String toName, |
| 507 | }) async { |
| 508 | final oldBoxName = "${fromName.replaceAll(" ", "_")}_${MwebUtxo.boxName}"; |
| 509 | final newBoxName = "${toName.replaceAll(" ", "_")}_${MwebUtxo.boxName}"; |
| 510 | if (oldBoxName == newBoxName) return; |
| 511 | |
| 512 | final oldBox = await CakeHive.openBox<MwebUtxo>(oldBoxName); |
| 513 | final newBox = await CakeHive.openBox<MwebUtxo>(newBoxName); |
| 514 | for (final key in oldBox.keys) { |
| 515 | await newBox.put(key, oldBox.get(key)!); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | static Future<void> deleteMwebBox(String name) async { |
| 520 | final boxName = "${name.replaceAll(" ", "_")}_${MwebUtxo.boxName}"; |
| 521 | final box = await CakeHive.openBox<MwebUtxo>(boxName); |
| 522 | await box.deleteFromDisk(); |
| 523 | } |
| 524 | |
| 525 | @action |
| 526 | @override |
| 527 | Future<void> rescan({ |
| 528 | required int height, |
| 529 | int? chainTip, |
| 530 | ScanData? scanData, |
| 531 | bool? doSingleScan, |
| 532 | bool? usingElectrs, |
| 533 | }) async { |
| 534 | _syncTimer?.cancel(); |
| 535 | await walletInfo.updateRestoreHeight(height); |
| 536 | |
| 537 | // go through mwebUtxos and clear any that are above the new restore height: |
| 538 | if (height == 0) { |
| 539 | await mwebUtxosBox.clear(); |
| 540 | transactionHistory.clear(); |
| 541 | } else { |
| 542 | for (final utxo in mwebUtxosBox.values) { |
| 543 | if (utxo.height > height) { |
| 544 | await mwebUtxosBox.delete(utxo.outputId); |
| 545 | } |
| 546 | } |
| 547 | // TODO: remove transactions that are above the new restore height! |
| 548 | } |
| 549 | |
| 550 | // reset coin balances and txCount to 0: |
| 551 | unspentCoins.forEach((coin) { |
| 552 | if (coin.bitcoinAddressRecord is! BitcoinSilentPaymentAddressRecord) |
| 553 | coin.bitcoinAddressRecord.balance = 0; |
| 554 | coin.bitcoinAddressRecord.txCount = 0; |
| 555 | }); |
| 556 | |
| 557 | for (var addressRecord in walletAddresses.allAddresses) { |
| 558 | addressRecord.balance = 0; |
| 559 | addressRecord.txCount = 0; |
| 560 | } |
| 561 | |
| 562 | await startSync(); |
| 563 | } |
| 564 | |
| 565 | @override |
| 566 | Future<void> init() async { |
| 567 | await super.init(); |
| 568 | await initMwebUtxosBox(); |
| 569 | } |
| 570 | |
| 571 | Future<void> handleIncoming(MwebUtxo utxo) async { |
| 572 | printV("handleIncoming() called!"); |
| 573 | final status = await CwMweb.status(StatusRequest()); |
| 574 | var date = DateTime.now(); |
| 575 | var confirmations = 0; |
| 576 | if (utxo.height > 0) { |
| 577 | date = DateTime.fromMillisecondsSinceEpoch(utxo.blockTime * 1000); |
| 578 | confirmations = status.blockHeaderHeight - utxo.height + 1; |
| 579 | } |
| 580 | var tx = transactionHistory.transactions.values |
| 581 | .firstWhereOrNull((tx) => tx.outputAddresses?.contains(utxo.outputId) ?? false); |
| 582 | |
| 583 | if (tx == null) { |
| 584 | tx = ElectrumTransactionInfo( |
| 585 | WalletType.litecoin, |
| 586 | id: utxo.outputId, |
| 587 | height: utxo.height, |
| 588 | amount: Money.fromInt(utxo.value, currency), |
| 589 | fee: Money.zero(currency), |
| 590 | direction: TransactionDirection.incoming, |
| 591 | isPending: utxo.height == 0, |
| 592 | date: date, |
| 593 | confirmations: confirmations, |
| 594 | inputAddresses: [], |
| 595 | outputAddresses: [utxo.outputId], |
| 596 | isReplaced: false, |
| 597 | ); |
| 598 | } else { |
| 599 | if (tx.confirmations != confirmations || tx.height != utxo.height) { |
| 600 | tx.height = utxo.height; |
| 601 | tx.confirmations = confirmations; |
| 602 | tx.isPending = utxo.height == 0; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | bool isNew = transactionHistory.transactions[tx.id] == null; |
| 607 | |
| 608 | if (!(tx.outputAddresses?.contains(utxo.address) ?? false)) { |
| 609 | tx.outputAddresses?.add(utxo.address); |
| 610 | isNew = true; |
| 611 | } |
| 612 | |
| 613 | if (isNew) { |
| 614 | final addressRecord = walletAddresses.allAddresses |
| 615 | .firstWhereOrNull((addressRecord) => addressRecord.address == utxo.address); |
| 616 | if (addressRecord == null) { |
| 617 | printV("we don't have this address in the wallet! ${utxo.address}"); |
| 618 | return; |
| 619 | } |
| 620 | |
| 621 | // update the txCount: |
| 622 | addressRecord.txCount++; |
| 623 | addressRecord.balance += utxo.value.toInt(); |
| 624 | addressRecord.setAsUsed(); |
| 625 | } |
| 626 | |
| 627 | transactionHistory.addOne(tx); |
| 628 | |
| 629 | if (isNew) { |
| 630 | // update the unconfirmed balance when a new tx is added: |
| 631 | // we do this after adding the tx to the history so that sub address balances are updated correctly |
| 632 | // (since that calculation is based on the tx history) |
| 633 | await updateBalance(); |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | Future<void> processMwebUtxos() async { |
| 638 | printV("processMwebUtxos() called!"); |
| 639 | if (!mwebEnabled) { |
| 640 | return; |
| 641 | } |
| 642 | |
| 643 | int restoreHeight = walletInfo.restoreHeight; |
| 644 | printV("SCANNING FROM HEIGHT: $restoreHeight"); |
| 645 | final req = UtxosRequest(scanSecret: scanSecret, fromHeight: restoreHeight); |
| 646 | |
| 647 | // process new utxos as they come in: |
| 648 | await _utxoStream?.cancel(); |
| 649 | ResponseStream<Utxo>? responseStream = await CwMweb.utxos(req); |
| 650 | if (responseStream == null) { |
| 651 | throw Exception("failed to get utxos stream!"); |
| 652 | } |
| 653 | _utxoStream = responseStream.listen( |
| 654 | (Utxo sUtxo) async { |
| 655 | // we're processing utxos, so our balance could still be inaccurate: |
| 656 | if (mwebSyncStatus is! SyncronizingSyncStatus && mwebSyncStatus is! SyncingSyncStatus) { |
| 657 | mwebSyncStatus = SyncronizingSyncStatus(); |
| 658 | processingUtxos = true; |
| 659 | _processingTimer?.cancel(); |
| 660 | _processingTimer = Timer.periodic(const Duration(seconds: 2), (timer) async { |
| 661 | processingUtxos = false; |
| 662 | timer.cancel(); |
| 663 | }); |
| 664 | } |
| 665 | |
| 666 | final utxo = MwebUtxo( |
| 667 | address: sUtxo.address, |
| 668 | blockTime: sUtxo.blockTime, |
| 669 | height: sUtxo.height, |
| 670 | outputId: sUtxo.outputId, |
| 671 | value: sUtxo.value.toInt(), |
| 672 | ); |
| 673 | |
| 674 | if (mwebUtxosBox.containsKey(utxo.outputId)) { |
| 675 | // we've already stored this utxo, skip it: |
| 676 | // but do update the utxo height if it's somehow different: |
| 677 | final existingUtxo = mwebUtxosBox.get(utxo.outputId); |
| 678 | if (existingUtxo!.height != utxo.height) { |
| 679 | printV( |
| 680 | "updating utxo height for $utxo.outputId: ${existingUtxo.height} -> ${utxo.height}"); |
| 681 | existingUtxo.height = utxo.height; |
| 682 | await mwebUtxosBox.put(utxo.outputId, existingUtxo); |
| 683 | } |
| 684 | return; |
| 685 | } |
| 686 | |
| 687 | await updateUnspent(); |
| 688 | await updateBalance(); |
| 689 | |
| 690 | final mwebAddrs = (walletAddresses as LitecoinWalletAddresses).mwebAddrs; |
| 691 | |
| 692 | // don't process utxos with addresses that are not in the mwebAddrs list: |
| 693 | if (utxo.address.isNotEmpty && !mwebAddrs.contains(utxo.address)) { |
| 694 | return; |
| 695 | } |
| 696 | |
| 697 | await mwebUtxosBox.put(utxo.outputId, utxo); |
| 698 | |
| 699 | await handleIncoming(utxo); |
| 700 | }, |
| 701 | onError: (error) { |
| 702 | printV("error in utxo stream: $error"); |
| 703 | mwebSyncStatus = FailedSyncStatus(error: error.toString()); |
| 704 | }, |
| 705 | cancelOnError: true, |
| 706 | ); |
| 707 | } |
| 708 | |
| 709 | Future<void> deleteSpentUtxos() async { |
| 710 | printV("deleteSpentUtxos() called!"); |
| 711 | final chainHeight = await electrumClient.getCurrentBlockChainTip(); |
| 712 | final status = await CwMweb.status(StatusRequest()); |
| 713 | if (chainHeight == null || status.blockHeaderHeight != chainHeight) return; |
| 714 | if (status.mwebUtxosHeight != chainHeight) return; // we aren't synced |
| 715 | |
| 716 | // delete any spent utxos with >= 2 confirmations: |
| 717 | final spentOutputIds = mwebUtxosBox.values |
| 718 | .where((utxo) => utxo.spent && (chainHeight - utxo.height) >= 2) |
| 719 | .map((utxo) => utxo.outputId) |
| 720 | .toList(); |
| 721 | |
| 722 | if (spentOutputIds.isEmpty) return; |
| 723 | |
| 724 | final resp = await CwMweb.spent(SpentRequest(outputId: spentOutputIds)); |
| 725 | final spent = resp.outputId; |
| 726 | if (spent.isEmpty) return; |
| 727 | |
| 728 | for (final outputId in spent) { |
| 729 | await mwebUtxosBox.delete(outputId); |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | Future<void> checkMwebUtxosSpent() async { |
| 734 | printV("checkMwebUtxosSpent() called!"); |
| 735 | if (!mwebEnabled) return; |
| 736 | |
| 737 | final pendingOutgoingTransactions = transactionHistory.transactions.values |
| 738 | .where((tx) => tx.direction == TransactionDirection.outgoing && tx.isPending); |
| 739 | |
| 740 | // check if any of the pending outgoing transactions are now confirmed: |
| 741 | bool updatedAny = false; |
| 742 | for (final tx in pendingOutgoingTransactions) { |
| 743 | updatedAny = await isConfirmed(tx) || updatedAny; |
| 744 | } |
| 745 | |
| 746 | await deleteSpentUtxos(); |
| 747 | |
| 748 | // get output ids of all the mweb utxos that have > 0 height: |
| 749 | final outputIds = mwebUtxosBox.values |
| 750 | .where((utxo) => utxo.height > 0 && !utxo.spent) |
| 751 | .map((utxo) => utxo.outputId) |
| 752 | .toList(); |
| 753 | |
| 754 | final resp = await CwMweb.spent(SpentRequest(outputId: outputIds)); |
| 755 | final spent = resp.outputId; |
| 756 | if (spent.isEmpty) return; |
| 757 | |
| 758 | final status = await CwMweb.status(StatusRequest()); |
| 759 | final height = await electrumClient.getCurrentBlockChainTip(); |
| 760 | if (height == null || status.blockHeaderHeight != height) return; |
| 761 | if (status.mwebUtxosHeight != height) return; // we aren't synced |
| 762 | var amount = 0; |
| 763 | var inputAddresses = <String>{}; |
| 764 | var output = convert.AccumulatorSink<Digest>(); |
| 765 | var input = sha256.startChunkedConversion(output); |
| 766 | |
| 767 | for (final outputId in spent) { |
| 768 | final utxo = mwebUtxosBox.get(outputId); |
| 769 | await mwebUtxosBox.delete(outputId); |
| 770 | if (utxo == null) continue; |
| 771 | final addressRecord = walletAddresses.allAddresses |
| 772 | .firstWhere((addressRecord) => addressRecord.address == utxo.address); |
| 773 | if (!inputAddresses.contains(utxo.address)) { |
| 774 | addressRecord.txCount++; |
| 775 | } |
| 776 | addressRecord.balance -= utxo.value; |
| 777 | amount += utxo.value; |
| 778 | inputAddresses.add(utxo.address); |
| 779 | input.add(hex.decode(outputId)); |
| 780 | } |
| 781 | |
| 782 | if (inputAddresses.isEmpty) return; |
| 783 | input.close(); |
| 784 | var digest = output.events.single; |
| 785 | final tx = ElectrumTransactionInfo( |
| 786 | WalletType.litecoin, |
| 787 | id: digest.toString(), |
| 788 | height: height, |
| 789 | amount: Money.fromInt(amount, currency), |
| 790 | fee: Money.zero(currency), |
| 791 | direction: TransactionDirection.outgoing, |
| 792 | isPending: false, |
| 793 | date: DateTime.fromMillisecondsSinceEpoch(status.blockTime * 1000), |
| 794 | confirmations: 1, |
| 795 | inputAddresses: inputAddresses.toList(), |
| 796 | outputAddresses: [], |
| 797 | isReplaced: false, |
| 798 | ); |
| 799 | |
| 800 | transactionHistory.addOne(tx); |
| 801 | await transactionHistory.save(); |
| 802 | |
| 803 | if (updatedAny) { |
| 804 | await updateBalance(); |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | // checks if a pending transaction is now confirmed, and updates the tx info accordingly: |
| 809 | Future<bool> isConfirmed(ElectrumTransactionInfo tx) async { |
| 810 | if (!mwebEnabled) return false; |
| 811 | if (!tx.isPending) return false; |
| 812 | |
| 813 | final isMwebTx = (tx.inputAddresses?.any((addr) => addr.contains("mweb")) ?? false) || |
| 814 | (tx.outputAddresses?.any((addr) => addr.contains("mweb")) ?? false); |
| 815 | |
| 816 | if (!isMwebTx) { |
| 817 | return false; |
| 818 | } |
| 819 | |
| 820 | final outputId = <String>[], target = <String>{}; |
| 821 | final isHash = RegExp(r'^[a-f0-9]{64}$').hasMatch; |
| 822 | final spendingOutputIds = tx.inputAddresses?.where(isHash) ?? []; |
| 823 | final payingToOutputIds = tx.outputAddresses?.where(isHash) ?? []; |
| 824 | outputId.addAll(spendingOutputIds); |
| 825 | outputId.addAll(payingToOutputIds); |
| 826 | target.addAll(spendingOutputIds); |
| 827 | |
| 828 | for (final outputId in payingToOutputIds) { |
| 829 | final spendingTx = transactionHistory.transactions.values |
| 830 | .firstWhereOrNull((tx) => tx.inputAddresses?.contains(outputId) ?? false); |
| 831 | if (spendingTx != null && !spendingTx.isPending) { |
| 832 | target.add(outputId); |
| 833 | } |
| 834 | } |
| 835 | |
| 836 | if (outputId.isEmpty) { |
| 837 | return false; |
| 838 | } |
| 839 | |
| 840 | final resp = await CwMweb.spent(SpentRequest(outputId: outputId)); |
| 841 | if (!setEquals(resp.outputId.toSet(), target)) { |
| 842 | return false; |
| 843 | } |
| 844 | |
| 845 | final status = await CwMweb.status(StatusRequest()); |
| 846 | tx.height = status.mwebUtxosHeight; |
| 847 | tx.confirmations = 1; |
| 848 | tx.isPending = false; |
| 849 | await transactionHistory.save(); |
| 850 | return true; |
| 851 | } |
| 852 | |
| 853 | Future<void> updateUnspent() async { |
| 854 | printV("updateUnspent() called!"); |
| 855 | await checkMwebUtxosSpent(); |
| 856 | await updateAllUnspents(); |
| 857 | } |
| 858 | |
| 859 | @override |
| 860 | @action |
| 861 | Future<void> updateAllUnspents() async { |
| 862 | if (!mwebEnabled) { |
| 863 | await super.updateAllUnspents(); |
| 864 | return; |
| 865 | } |
| 866 | |
| 867 | // add the mweb unspents to the list: |
| 868 | List<BitcoinUnspent> mwebUnspentCoins = []; |
| 869 | // update mweb unspents: |
| 870 | final mwebAddrs = (walletAddresses as LitecoinWalletAddresses).mwebAddrs; |
| 871 | mwebUtxosBox.keys.forEach((dynamic oId) { |
| 872 | final String outputId = oId as String; |
| 873 | final utxo = mwebUtxosBox.get(outputId); |
| 874 | if (utxo == null || utxo.spent) { |
| 875 | return; |
| 876 | } |
| 877 | if (utxo.address.isEmpty) { |
| 878 | // not sure if a bug or a special case but we definitely ignore these |
| 879 | return; |
| 880 | } |
| 881 | final addressRecord = walletAddresses.allAddresses |
| 882 | .firstWhereOrNull((addressRecord) => addressRecord.address == utxo.address); |
| 883 | |
| 884 | if (addressRecord == null) { |
| 885 | printV("utxo contains an address that is not in the wallet: ${utxo.address}"); |
| 886 | return; |
| 887 | } |
| 888 | final unspent = BitcoinUnspent( |
| 889 | addressRecord, |
| 890 | outputId, |
| 891 | utxo.value.toInt(), |
| 892 | mwebAddrs.indexOf(utxo.address), |
| 893 | ); |
| 894 | if (unspent.vout == 0) { |
| 895 | unspent.isChange = true; |
| 896 | } |
| 897 | |
| 898 | // printV("unspent: $unspent ${unspent.vout} ${utxo.value}"); |
| 899 | mwebUnspentCoins.add(unspent); |
| 900 | }); |
| 901 | |
| 902 | // copy coin control attributes to mwebCoins: |
| 903 | await updateCoins(mwebUnspentCoins); |
| 904 | // get regular ltc unspents (this resets unspentCoins): |
| 905 | await super.updateAllUnspents(); |
| 906 | // add the mwebCoins: |
| 907 | unspentCoins.addAll(mwebUnspentCoins); |
| 908 | } |
| 909 | |
| 910 | @override |
| 911 | Future<ElectrumBalance> fetchBalances() async { |
| 912 | final balance = await super.fetchBalances(); |
| 913 | if (!mwebEnabled) { |
| 914 | return balance; |
| 915 | } |
| 916 | |
| 917 | // update unspent balances: |
| 918 | await updateUnspent(); |
| 919 | |
| 920 | var confirmedMweb = 0; |
| 921 | var unconfirmedMweb = 0; |
| 922 | try { |
| 923 | mwebUtxosBox.values.forEach((utxo) { |
| 924 | bool isConfirmed = utxo.height > 0; |
| 925 | |
| 926 | printV( |
| 927 | "utxo: ${isConfirmed ? "confirmed" : "unconfirmed"} ${utxo.spent ? "spent" : "unspent"} ${utxo.outputId} ${utxo.height} ${utxo.value}"); |
| 928 | |
| 929 | if (isConfirmed) { |
| 930 | confirmedMweb += utxo.value; |
| 931 | } |
| 932 | |
| 933 | if (isConfirmed && utxo.spent) { |
| 934 | unconfirmedMweb -= utxo.value; |
| 935 | } |
| 936 | |
| 937 | if (!isConfirmed && !utxo.spent) { |
| 938 | unconfirmedMweb += utxo.value; |
| 939 | } |
| 940 | }); |
| 941 | } catch (_) {} |
| 942 | |
| 943 | for (final addressRecord in walletAddresses.allAddresses) { |
| 944 | addressRecord.balance = 0; |
| 945 | addressRecord.txCount = 0; |
| 946 | } |
| 947 | |
| 948 | unspentCoins.forEach((coin) { |
| 949 | final coinInfoList = unspentCoinsInfo.values.where( |
| 950 | (element) => |
| 951 | element.walletId.contains(id) && |
| 952 | element.hash.contains(coin.hash) && |
| 953 | element.vout == coin.vout, |
| 954 | ); |
| 955 | |
| 956 | if (coinInfoList.isNotEmpty) { |
| 957 | final coinInfo = coinInfoList.first; |
| 958 | |
| 959 | coin.isFrozen = coinInfo.isFrozen; |
| 960 | coin.isSending = coinInfo.isSending; |
| 961 | coin.note = coinInfo.note; |
| 962 | if (coin.bitcoinAddressRecord is! BitcoinSilentPaymentAddressRecord) |
| 963 | coin.bitcoinAddressRecord.balance += coinInfo.value; |
| 964 | } else { |
| 965 | super.addCoinInfo(coin); |
| 966 | } |
| 967 | }); |
| 968 | |
| 969 | // update the txCount for each address using the tx history, since we can't rely on mwebd |
| 970 | // to have an accurate count, we should just keep it in sync with what we know from the tx history: |
| 971 | for (final tx in transactionHistory.transactions.values) { |
| 972 | if (tx.inputAddresses == null || tx.outputAddresses == null) { |
| 973 | continue; |
| 974 | } |
| 975 | final txAddresses = tx.inputAddresses! + tx.outputAddresses!; |
| 976 | for (final address in txAddresses) { |
| 977 | final addressRecord = walletAddresses.allAddresses |
| 978 | .firstWhereOrNull((addressRecord) => addressRecord.address == address); |
| 979 | if (addressRecord == null) { |
| 980 | continue; |
| 981 | } |
| 982 | addressRecord.txCount++; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | return ElectrumBalance( |
| 987 | confirmed: balance.confirmed, |
| 988 | unconfirmed: balance.unconfirmed, |
| 989 | frozen: balance.frozen, |
| 990 | secondConfirmed: Money.fromInt(confirmedMweb, currency), |
| 991 | secondUnconfirmed: Money.fromInt(unconfirmedMweb, currency), |
| 992 | ); |
| 993 | } |
| 994 | |
| 995 | @override |
| 996 | int feeRate(TransactionPriority priority) { |
| 997 | if (priority is LitecoinTransactionPriority) { |
| 998 | switch (priority) { |
| 999 | case LitecoinTransactionPriority.slow: |
| 1000 | return 1; |
| 1001 | case LitecoinTransactionPriority.medium: |
| 1002 | return 2; |
| 1003 | case LitecoinTransactionPriority.fast: |
| 1004 | return 3; |
| 1005 | } |
| 1006 | } |
| 1007 | |
| 1008 | return 0; |
| 1009 | } |
| 1010 | |
| 1011 | @override |
| 1012 | Future<int> calcFee({ |
| 1013 | required List<UtxoWithAddress> utxos, |
| 1014 | required List<BitcoinBaseOutput> outputs, |
| 1015 | required BasedUtxoNetwork network, |
| 1016 | String? memo, |
| 1017 | required int feeRate, |
| 1018 | List<ECPrivateInfo>? inputPrivKeyInfos, |
| 1019 | List<Outpoint>? vinOutpoints, |
| 1020 | }) async { |
| 1021 | bool spendsMweb = utxos.any((utxo) => utxo.utxo.scriptType == SegwitAddresType.mweb); |
| 1022 | bool paysToMweb = outputs |
| 1023 | .any((output) => output.toOutput.scriptPubKey.getAddressType() == SegwitAddresType.mweb); |
| 1024 | |
| 1025 | bool isRegular = !spendsMweb && !paysToMweb; |
| 1026 | bool isMweb = spendsMweb || paysToMweb; |
| 1027 | |
| 1028 | if (isMweb && !mwebEnabled) { |
| 1029 | throw Exception("MWEB is not enabled! can't calculate fee without starting the mweb server!"); |
| 1030 | // TODO: likely the change address is mweb and just not updated |
| 1031 | } |
| 1032 | |
| 1033 | if (isRegular) { |
| 1034 | return await super.calcFee( |
| 1035 | utxos: utxos, |
| 1036 | outputs: outputs, |
| 1037 | network: network, |
| 1038 | memo: memo, |
| 1039 | feeRate: feeRate, |
| 1040 | inputPrivKeyInfos: inputPrivKeyInfos, |
| 1041 | vinOutpoints: vinOutpoints, |
| 1042 | ); |
| 1043 | } |
| 1044 | |
| 1045 | if (outputs.length == 1 && outputs[0].toOutput.amount == BigInt.zero) { |
| 1046 | outputs = [ |
| 1047 | BitcoinScriptOutput( |
| 1048 | script: outputs[0].toOutput.scriptPubKey, value: utxos.sumOfUtxosValue()) |
| 1049 | ]; |
| 1050 | } |
| 1051 | |
| 1052 | // https://github.com/ltcmweb/mwebd?tab=readme-ov-file#fee-estimation |
| 1053 | final preOutputSum = |
| 1054 | outputs.fold<BigInt>(BigInt.zero, (acc, output) => acc + output.toOutput.amount); |
| 1055 | var fee = utxos.sumOfUtxosValue() - preOutputSum; |
| 1056 | |
| 1057 | // determines if the fee is correct: |
| 1058 | BigInt _sumOutputAmounts(List<TxOutput> outputs) { |
| 1059 | BigInt sum = BigInt.zero; |
| 1060 | for (final e in outputs) { |
| 1061 | sum += e.amount; |
| 1062 | } |
| 1063 | return sum; |
| 1064 | } |
| 1065 | |
| 1066 | final sum1 = _sumOutputAmounts(outputs.map((e) => e.toOutput).toList()) + fee; |
| 1067 | final sum2 = utxos.sumOfUtxosValue(); |
| 1068 | if (sum1 != sum2) { |
| 1069 | printV("@@@@@ WE HAD TO ADJUST THE FEE! @@@@@@@@"); |
| 1070 | final diff = sum2 - sum1; |
| 1071 | // add the difference to the fee (abs value): |
| 1072 | fee += diff.abs(); |
| 1073 | } |
| 1074 | |
| 1075 | final txb = |
| 1076 | BitcoinTransactionBuilder(utxos: utxos, outputs: outputs, fee: fee, network: network); |
| 1077 | final resp = await CwMweb.create(CreateRequest( |
| 1078 | rawTx: txb.buildTransaction((a, b, c, d) => '').toBytes(), |
| 1079 | scanSecret: scanSecret, |
| 1080 | spendSecret: spendSecret, |
| 1081 | feeRatePerKb: Int64(feeRate * 1000), |
| 1082 | dryRun: true)); |
| 1083 | final tx = BtcTransaction.fromRaw(hex.encode(resp.rawTx)); |
| 1084 | final posUtxos = utxos |
| 1085 | .where((utxo) => tx.inputs |
| 1086 | .any((input) => input.txId == utxo.utxo.txHash && input.txIndex == utxo.utxo.vout)) |
| 1087 | .toList(); |
| 1088 | final posOutputSum = tx.outputs.fold<int>(0, (acc, output) => acc + output.amount.toInt()); |
| 1089 | final mwebInputSum = utxos.sumOfUtxosValue() - posUtxos.sumOfUtxosValue(); |
| 1090 | final expectedPegin = max(0, (preOutputSum - mwebInputSum).toInt()); |
| 1091 | var feeIncrease = posOutputSum - expectedPegin; |
| 1092 | if (expectedPegin > 0 && fee == BigInt.zero) { |
| 1093 | feeIncrease += await super.calcFee( |
| 1094 | utxos: posUtxos, |
| 1095 | outputs: tx.outputs |
| 1096 | .map((output) => |
| 1097 | BitcoinScriptOutput(script: output.scriptPubKey, value: output.amount)) |
| 1098 | .toList(), |
| 1099 | network: network, |
| 1100 | memo: memo, |
| 1101 | feeRate: feeRate) + |
| 1102 | feeRate * 41; |
| 1103 | } |
| 1104 | return fee.toInt() + feeIncrease; |
| 1105 | } |
| 1106 | |
| 1107 | Future<Uint8List> buildPsbt(PendingBitcoinTransaction transaction, bool isMweb) async { |
| 1108 | final List<TxInput> inputs = []; |
| 1109 | final List<TxOut> txouts = []; |
| 1110 | for (final utxo in transaction.utxos) { |
| 1111 | if (utxo.utxo.scriptType != SegwitAddresType.mweb) { |
| 1112 | inputs.add(utxo.utxo.toInput()); |
| 1113 | txouts.add(TxOut( |
| 1114 | value: Int64(utxo.utxo.value.toInt()), |
| 1115 | pkScript: utxo.ownerDetails.address.toScriptPubKey().toBytes())); |
| 1116 | } |
| 1117 | } |
| 1118 | var resp = await CwMweb.psbtCreate(PsbtCreateRequest( |
| 1119 | rawTx: inputs.isEmpty |
| 1120 | ? null |
| 1121 | : BtcTransaction( |
| 1122 | inputs: inputs, |
| 1123 | outputs: isMweb ? [] : transaction.outputs, |
| 1124 | ).toBytes(), |
| 1125 | witnessUtxo: txouts, |
| 1126 | )); |
| 1127 | for (final utxo in transaction.utxos) { |
| 1128 | if (utxo.utxo.scriptType == SegwitAddresType.mweb) { |
| 1129 | resp = await CwMweb.psbtAddInput(PsbtAddInputRequest( |
| 1130 | psbtB64: resp.psbtB64, |
| 1131 | scanSecret: scanSecret, |
| 1132 | outputId: utxo.utxo.txHash, |
| 1133 | addressIndex: utxo.utxo.vout, |
| 1134 | )); |
| 1135 | } |
| 1136 | } |
| 1137 | if (isMweb) |
| 1138 | for (final output in transaction.outputs) { |
| 1139 | var address = addressFromOutputScript(output.scriptPubKey, LitecoinNetwork.mainnet); |
| 1140 | if (output.scriptPubKey.getAddressType() == SegwitAddresType.mweb) { |
| 1141 | address = SegwitBech32Encoder.encode("ltcmweb", 0, output.scriptPubKey.toBytes()); |
| 1142 | } |
| 1143 | resp = await CwMweb.psbtAddRecipient(PsbtAddRecipientRequest( |
| 1144 | psbtB64: resp.psbtB64, |
| 1145 | recipient: PsbtRecipient(address: address, value: Int64(output.amount.toInt())), |
| 1146 | feeRatePerKb: Int64.parseInt(transaction.feeRate) * 1000, |
| 1147 | )); |
| 1148 | } |
| 1149 | return base64.decode(resp.psbtB64); |
| 1150 | } |
| 1151 | |
| 1152 | @override |
| 1153 | Future<PendingTransaction> createTransaction(Object credentials) async { |
| 1154 | try { |
| 1155 | var creds; |
| 1156 | if (!mwebEnabled) { |
| 1157 | BitcoinTransactionCredentials btcCreds = (credentials as BitcoinTransactionCredentials); |
| 1158 | // sets unspent coin type to nonMweb: |
| 1159 | creds = BitcoinTransactionCredentials( |
| 1160 | btcCreds.outputs, |
| 1161 | priority: btcCreds.priority, |
| 1162 | feeRate: btcCreds.feeRate, |
| 1163 | coinTypeToSpendFrom: UnspentCoinType.nonMweb, |
| 1164 | ); |
| 1165 | } else { |
| 1166 | creds = credentials; |
| 1167 | } |
| 1168 | var tx = await super.createTransaction(creds as Object) as PendingBitcoinTransaction; |
| 1169 | tx.isMweb = mwebEnabled; |
| 1170 | |
| 1171 | if (!mwebEnabled) { |
| 1172 | tx.changeAddressOverride = (await (walletAddresses as LitecoinWalletAddresses) |
| 1173 | .getChangeAddress(coinTypeToSpendFrom: UnspentCoinType.nonMweb)) |
| 1174 | .address; |
| 1175 | |
| 1176 | if (tx.shouldCommitUR()) { |
| 1177 | tx.unsignedPsbt = await buildPsbt(tx, false); |
| 1178 | } |
| 1179 | return tx; |
| 1180 | } |
| 1181 | await waitForMwebAddresses(); |
| 1182 | |
| 1183 | // check if the transaction doesn't contain any mweb inputs or outputs: |
| 1184 | final transactionCredentials = credentials as BitcoinTransactionCredentials; |
| 1185 | |
| 1186 | bool hasMwebInput = false; |
| 1187 | bool hasMwebOutput = false; |
| 1188 | bool hasRegularOutput = false; |
| 1189 | |
| 1190 | for (final output in transactionCredentials.outputs) { |
| 1191 | final address = output.address.toLowerCase(); |
| 1192 | final extractedAddress = output.extractedAddress?.toLowerCase(); |
| 1193 | |
| 1194 | if (address.startsWith("ltcmweb")) { |
| 1195 | hasMwebOutput = true; |
| 1196 | } |
| 1197 | if (!address.startsWith("ltcmweb")) { |
| 1198 | hasRegularOutput = true; |
| 1199 | } |
| 1200 | if (extractedAddress != null && extractedAddress.isNotEmpty) { |
| 1201 | if (extractedAddress.startsWith("ltcmweb")) { |
| 1202 | hasMwebOutput = true; |
| 1203 | } |
| 1204 | if (!extractedAddress.startsWith("ltcmweb")) { |
| 1205 | hasRegularOutput = true; |
| 1206 | } |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | // check if mweb inputs are used: |
| 1211 | for (final utxo in tx.utxos) { |
| 1212 | if (utxo.utxo.scriptType == SegwitAddresType.mweb) { |
| 1213 | hasMwebInput = true; |
| 1214 | } else { |
| 1215 | // check if any of the inputs of this transaction are hog-ex: |
| 1216 | // this list is only non-mweb inputs: |
| 1217 | final coin = unspentCoins |
| 1218 | .firstWhere((coin) => coin.hash == utxo.utxo.txHash && coin.vout == utxo.utxo.vout); |
| 1219 | if (coin.isPegOut != true) continue; |
| 1220 | |
| 1221 | int confirmations = coin.confirmations ?? 0; |
| 1222 | if (confirmations < 6) { |
| 1223 | throw Exception( |
| 1224 | "A transaction input is an MWEB peg-out and has less than 6 confirmations, please try again later."); |
| 1225 | } |
| 1226 | } |
| 1227 | } |
| 1228 | |
| 1229 | // could probably be simplified but left for clarity: |
| 1230 | bool isPegIn = !hasMwebInput && hasMwebOutput; |
| 1231 | bool isPegOut = hasMwebInput && hasRegularOutput; |
| 1232 | bool isRegular = !hasMwebInput && !hasMwebOutput; |
| 1233 | bool shouldNotUseMwebChange = isPegIn || isRegular || !hasMwebInput; |
| 1234 | tx.changeAddressOverride = (await (walletAddresses as LitecoinWalletAddresses) |
| 1235 | .getChangeAddress( |
| 1236 | coinTypeToSpendFrom: |
| 1237 | shouldNotUseMwebChange ? UnspentCoinType.nonMweb : UnspentCoinType.any)) |
| 1238 | .address; |
| 1239 | if (isRegular) { |
| 1240 | tx.isMweb = false; |
| 1241 | if (tx.shouldCommitUR()) { |
| 1242 | tx.unsignedPsbt = await buildPsbt(tx, false); |
| 1243 | } |
| 1244 | return tx; |
| 1245 | } |
| 1246 | |
| 1247 | if (tx.shouldCommitUR()) { |
| 1248 | tx.unsignedPsbt = await buildPsbt(tx, true); |
| 1249 | return tx; |
| 1250 | } |
| 1251 | |
| 1252 | final resp = await CwMweb.create(CreateRequest( |
| 1253 | rawTx: hex.decode(tx.hex), |
| 1254 | scanSecret: scanSecret, |
| 1255 | spendSecret: spendSecret, |
| 1256 | feeRatePerKb: Int64.parseInt(tx.feeRate) * 1000, |
| 1257 | )); |
| 1258 | final tx2 = BtcTransaction.fromRaw(hex.encode(resp.rawTx)); |
| 1259 | |
| 1260 | tx.hexOverride = tx2 |
| 1261 | .copyWith( |
| 1262 | witnesses: tx2.inputs.asMap().entries.map((e) { |
| 1263 | final utxo = unspentCoins |
| 1264 | .firstWhere((utxo) => utxo.hash == e.value.txId && utxo.vout == e.value.txIndex); |
| 1265 | final key = generateECPrivate( |
| 1266 | hd: utxo.bitcoinAddressRecord.isHidden ? sideHd : mainHd, |
| 1267 | index: utxo.bitcoinAddressRecord.index, |
| 1268 | network: network); |
| 1269 | final digest = tx2.getTransactionSegwitDigit( |
| 1270 | txInIndex: e.key, |
| 1271 | script: key.getPublic().toP2pkhAddress().toScriptPubKey(), |
| 1272 | amount: BigInt.from(utxo.value), |
| 1273 | ); |
| 1274 | return TxWitnessInput(stack: [key.signInput(digest), key.getPublic().toHex()]); |
| 1275 | }).toList()) |
| 1276 | .toHex(); |
| 1277 | tx.outputAddresses = resp.outputId; |
| 1278 | |
| 1279 | addTransactionListener(tx, [], isPegIn, isPegOut); |
| 1280 | return tx; |
| 1281 | } catch (e, s) { |
| 1282 | printV(e); |
| 1283 | printV(s); |
| 1284 | if (e.toString().contains("commit failed")) { |
| 1285 | printV(e); |
| 1286 | throw Exception("Transaction commit failed (no peers responded), please try again."); |
| 1287 | } |
| 1288 | rethrow; |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | void addTransactionListener( |
| 1293 | PendingBitcoinTransaction tx, List<String> inputAddresses, bool isPegIn, bool isPegOut) { |
| 1294 | tx.addListener((transaction) async { |
| 1295 | final addresses = <String>{}; |
| 1296 | transaction.inputAddresses?.addAll(inputAddresses); |
| 1297 | transaction.inputAddresses?.forEach((id) async { |
| 1298 | final utxo = mwebUtxosBox.get(id); |
| 1299 | // await mwebUtxosBox.delete(id); // gets deleted in checkMwebUtxosSpent |
| 1300 | if (utxo == null) return; |
| 1301 | // mark utxo as spent so we add it to the unconfirmed balance (as negative): |
| 1302 | utxo.spent = true; |
| 1303 | await mwebUtxosBox.put(id, utxo); |
| 1304 | final addressRecord = walletAddresses.allAddresses |
| 1305 | .firstWhere((addressRecord) => addressRecord.address == utxo.address); |
| 1306 | if (!addresses.contains(utxo.address)) { |
| 1307 | addresses.add(utxo.address); |
| 1308 | } |
| 1309 | addressRecord.balance -= utxo.value.toInt(); |
| 1310 | }); |
| 1311 | transaction.inputAddresses?.addAll(addresses); |
| 1312 | printV("isPegIn: $isPegIn, isPegOut: $isPegOut"); |
| 1313 | transaction.additionalInfo["isPegIn"] = isPegIn; |
| 1314 | transaction.additionalInfo["isPegOut"] = isPegOut; |
| 1315 | transactionHistory.addOne(transaction); |
| 1316 | await updateUnspent(); |
| 1317 | await updateBalance(); |
| 1318 | }); |
| 1319 | } |
| 1320 | |
| 1321 | Future<void> commitPsbtUR(List<String> urCodes) async { |
| 1322 | if (urCodes.isEmpty) throw Exception("No QR code got scanned"); |
| 1323 | bool isUr = urCodes.any((str) { |
| 1324 | return str.startsWith("ur:psbt/"); |
| 1325 | }); |
| 1326 | if (!isUr) return; |
| 1327 | |
| 1328 | final ur = URDecoder(); |
| 1329 | for (final inp in urCodes) { |
| 1330 | ur.receivePart(inp); |
| 1331 | } |
| 1332 | final result = ur.result as UR; |
| 1333 | final psbtB64 = base64Encode(CBORDecoder(result.cbor).decodeBytes().$1); |
| 1334 | |
| 1335 | final resp = await CwMweb.psbtGetRecipients(PsbtGetRecipientsRequest(psbtB64: psbtB64)); |
| 1336 | |
| 1337 | bool hasMwebInput = false; |
| 1338 | bool hasMwebOutput = false; |
| 1339 | bool hasRegularOutput = false; |
| 1340 | |
| 1341 | for (final recipient in resp.recipient) { |
| 1342 | if (recipient.address.contains("mweb")) { |
| 1343 | hasMwebOutput = true; |
| 1344 | } else { |
| 1345 | hasRegularOutput = true; |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | for (final address in resp.inputAddress) { |
| 1350 | try { |
| 1351 | LitecoinAddress(address); |
| 1352 | } catch (_) { |
| 1353 | hasMwebInput = true; |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | bool isPegIn = !hasMwebInput && hasMwebOutput; |
| 1358 | bool isPegOut = hasMwebInput && hasRegularOutput; |
| 1359 | bool isRegular = !hasMwebInput && !hasMwebOutput; |
| 1360 | |
| 1361 | final resp2 = await CwMweb.psbtExtract(PsbtExtractRequest(psbtB64: psbtB64)); |
| 1362 | |
| 1363 | final btcTx = BtcTransaction.fromRaw(hex.encode(resp2.rawTx)); |
| 1364 | |
| 1365 | final tx = PendingBitcoinTransaction( |
| 1366 | btcTx, |
| 1367 | type, |
| 1368 | electrumClient: electrumClient, |
| 1369 | amount: Money.zero(currency), |
| 1370 | fee: Money.fromInt(resp.fee.toInt(), currency), |
| 1371 | feeRate: "", |
| 1372 | network: network, |
| 1373 | hasChange: resp.recipient.length > 1, |
| 1374 | isMweb: !isRegular, |
| 1375 | isViewOnly: false, |
| 1376 | ); |
| 1377 | tx.outputAddresses = resp2.outputId; |
| 1378 | addTransactionListener(tx, resp.inputAddress, isPegIn, isPegOut); |
| 1379 | |
| 1380 | try { |
| 1381 | await tx.commit(); |
| 1382 | } catch (e, s) { |
| 1383 | printV(e); |
| 1384 | printV(s); |
| 1385 | if (e.toString().contains("commit failed")) { |
| 1386 | printV(e); |
| 1387 | throw Exception("Transaction commit failed (no peers responded), please try again."); |
| 1388 | } |
| 1389 | rethrow; |
| 1390 | } |
| 1391 | } |
| 1392 | |
| 1393 | @override |
| 1394 | Future<void> save() async { |
| 1395 | await super.save(); |
| 1396 | } |
| 1397 | |
| 1398 | @override |
| 1399 | Future<void> close({bool shouldCleanup = false}) async { |
| 1400 | _utxoStream?.cancel(); |
| 1401 | _feeRatesTimer?.cancel(); |
| 1402 | _syncTimer?.cancel(); |
| 1403 | _processingTimer?.cancel(); |
| 1404 | if (shouldCleanup) { |
| 1405 | try { |
| 1406 | await stopSync(); |
| 1407 | } catch (_) {} |
| 1408 | } |
| 1409 | await super.close(shouldCleanup: shouldCleanup); |
| 1410 | } |
| 1411 | |
| 1412 | Future<void> setMwebEnabled(bool enabled) async { |
| 1413 | if (mwebEnabled == enabled && |
| 1414 | alwaysScan == enabled && |
| 1415 | (walletAddresses as LitecoinWalletAddresses).mwebEnabled == enabled) { |
| 1416 | return; |
| 1417 | } |
| 1418 | |
| 1419 | alwaysScan = enabled; |
| 1420 | mwebEnabled = enabled; |
| 1421 | (walletAddresses as LitecoinWalletAddresses).mwebEnabled = enabled; |
| 1422 | await save(); |
| 1423 | try { |
| 1424 | await stopSync(); |
| 1425 | } catch (_) {} |
| 1426 | await startSync(); |
| 1427 | } |
| 1428 | |
| 1429 | Future<StatusResponse> getStatusRequest() async { |
| 1430 | final resp = await CwMweb.status(StatusRequest()); |
| 1431 | return resp; |
| 1432 | } |
| 1433 | |
| 1434 | @override |
| 1435 | Future<String> signMessage(String message, {String? address = null}) async { |
| 1436 | final index = address != null |
| 1437 | ? walletAddresses.allAddresses.firstWhere((element) => element.address == address).index |
| 1438 | : null; |
| 1439 | final HD = index == null ? mainHd : mainHd.childKey(Bip32KeyIndex(index)); |
| 1440 | final priv = ECPrivate.fromHex(HD.privateKey.privKey.toHex()); |
| 1441 | |
| 1442 | final privateKey = ECDSAPrivateKey.fromBytes( |
| 1443 | priv.toBytes(), |
| 1444 | Curves.generatorSecp256k1, |
| 1445 | ); |
| 1446 | |
| 1447 | final signature = |
| 1448 | signLitecoinMessage(utf8.encode(message), privateKey: privateKey, bipPrive: priv.prive); |
| 1449 | |
| 1450 | return base64Encode(signature); |
| 1451 | } |
| 1452 | |
| 1453 | List<int> _magicPrefix(List<int> message, List<int> messagePrefix) { |
| 1454 | final encodeLength = IntUtils.encodeVarint(message.length); |
| 1455 | |
| 1456 | return [...messagePrefix, ...encodeLength, ...message]; |
| 1457 | } |
| 1458 | |
| 1459 | List<int> signLitecoinMessage(List<int> message, |
| 1460 | {required ECDSAPrivateKey privateKey, required Bip32PrivateKey bipPrive}) { |
| 1461 | String messagePrefix = '\x19Litecoin Signed Message:\n'; |
| 1462 | final messageHash = QuickCrypto.sha256Hash(magicMessage(message, messagePrefix)); |
| 1463 | final signingKey = EcdsaSigningKey(privateKey); |
| 1464 | ECDSASignature ecdsaSign = |
| 1465 | signingKey.signDigestDeterminstic(digest: messageHash, hashFunc: () => SHA256()); |
| 1466 | final n = Curves.generatorSecp256k1.order! >> 1; |
| 1467 | BigInt newS; |
| 1468 | if (ecdsaSign.s.compareTo(n) > 0) { |
| 1469 | newS = Curves.generatorSecp256k1.order! - ecdsaSign.s; |
| 1470 | } else { |
| 1471 | newS = ecdsaSign.s; |
| 1472 | } |
| 1473 | final rawSig = ECDSASignature(ecdsaSign.r, newS); |
| 1474 | final rawSigBytes = rawSig.toBytes(BitcoinSignerUtils.baselen); |
| 1475 | |
| 1476 | final pub = bipPrive.publicKey; |
| 1477 | final ECDomainParameters curve = ECCurve_secp256k1(); |
| 1478 | final point = curve.curve.decodePoint(pub.point.toBytes()); |
| 1479 | |
| 1480 | final rawSigEc = ECSignature(rawSig.r, rawSig.s); |
| 1481 | |
| 1482 | final recId = SignUtils.findRecoveryId( |
| 1483 | SignUtils.getHexString(messageHash, offset: 0, length: messageHash.length), |
| 1484 | rawSigEc, |
| 1485 | Uint8List.fromList(pub.uncompressed), |
| 1486 | ); |
| 1487 | |
| 1488 | final v = recId + 27 + (point!.isCompressed ? 4 : 0); |
| 1489 | |
| 1490 | final combined = Uint8List.fromList([v, ...rawSigBytes]); |
| 1491 | |
| 1492 | return combined; |
| 1493 | } |
| 1494 | |
| 1495 | List<int> magicMessage(List<int> message, String messagePrefix) { |
| 1496 | final prefixBytes = StringUtils.encode(messagePrefix); |
| 1497 | final magic = _magicPrefix(message, prefixBytes); |
| 1498 | return QuickCrypto.sha256Hash(magic); |
| 1499 | } |
| 1500 | |
| 1501 | @override |
| 1502 | Future<bool> verifyMessage(String message, String signature, {String? address = null}) async { |
| 1503 | if (address == null) { |
| 1504 | return false; |
| 1505 | } |
| 1506 | |
| 1507 | List<int> sigDecodedBytes = []; |
| 1508 | |
| 1509 | if (signature.endsWith('=')) { |
| 1510 | sigDecodedBytes = base64.decode(signature); |
| 1511 | } else { |
| 1512 | sigDecodedBytes = hex.decode(signature); |
| 1513 | } |
| 1514 | |
| 1515 | if (sigDecodedBytes.length != 64 && sigDecodedBytes.length != 65) { |
| 1516 | throw ArgumentException( |
| 1517 | "litecoin signature must be 64 bytes without recover-id or 65 bytes with recover-id"); |
| 1518 | } |
| 1519 | |
| 1520 | String messagePrefix = '\x19Litecoin Signed Message:\n'; |
| 1521 | final messageHash = QuickCrypto.sha256Hash(magicMessage(utf8.encode(message), messagePrefix)); |
| 1522 | |
| 1523 | List<int> correctSignature = |
| 1524 | sigDecodedBytes.length == 65 ? sigDecodedBytes.sublist(1) : List.from(sigDecodedBytes); |
| 1525 | List<int> rBytes = correctSignature.sublist(0, 32); |
| 1526 | List<int> sBytes = correctSignature.sublist(32); |
| 1527 | final sig = ECDSASignature(BigintUtils.fromBytes(rBytes), BigintUtils.fromBytes(sBytes)); |
| 1528 | |
| 1529 | List<int> possibleRecoverIds = [0, 1]; |
| 1530 | |
| 1531 | final baseAddress = RegexUtils.addressTypeFromStr(address, network); |
| 1532 | |
| 1533 | for (int recoveryId in possibleRecoverIds) { |
| 1534 | final pubKey = sig.recoverPublicKey(messageHash, Curves.generatorSecp256k1, recoveryId); |
| 1535 | final recoveredPub = ECPublic.fromBytes(pubKey!.toBytes()); |
| 1536 | |
| 1537 | String? recoveredAddress; |
| 1538 | |
| 1539 | if (baseAddress is P2pkAddress) { |
| 1540 | recoveredAddress = recoveredPub.toP2pkAddress().toAddress(network); |
| 1541 | } else if (baseAddress is P2pkhAddress) { |
| 1542 | recoveredAddress = recoveredPub.toP2pkhAddress().toAddress(network); |
| 1543 | } else if (baseAddress is P2wshAddress) { |
| 1544 | recoveredAddress = recoveredPub.toP2wshAddress().toAddress(network); |
| 1545 | } else if (baseAddress is P2wpkhAddress) { |
| 1546 | recoveredAddress = recoveredPub.toP2wpkhAddress().toAddress(network); |
| 1547 | } |
| 1548 | |
| 1549 | if (recoveredAddress == address) { |
| 1550 | return true; |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | return false; |
| 1555 | } |
| 1556 | |
| 1557 | @override |
| 1558 | Future<BtcTransaction> buildHardwareWalletTransaction({ |
| 1559 | required List<BitcoinBaseOutput> outputs, |
| 1560 | required BigInt fee, |
| 1561 | required BasedUtxoNetwork network, |
| 1562 | required List<UtxoWithAddress> utxos, |
| 1563 | required List<OutputInfo> cwOutputs, |
| 1564 | required Map<String, PublicKeyWithDerivationPath> publicKeys, |
| 1565 | String? memo, |
| 1566 | bool enableRBF = false, |
| 1567 | BitcoinOrdering inputOrdering = BitcoinOrdering.bip69, |
| 1568 | BitcoinOrdering outputOrdering = BitcoinOrdering.bip69, |
| 1569 | }) async { |
| 1570 | final masterFingerprint = |
| 1571 | await (hardwareWalletService as BitcoinHardwareWalletService).getMasterFingerprint(); |
| 1572 | |
| 1573 | final readyInputs = <PSBTReadyUtxoWithAddress>[]; |
| 1574 | for (final utxo in utxos) { |
| 1575 | final rawTx = await electrumClient.getTransactionHex(hash: utxo.utxo.txHash); |
| 1576 | final publicKeyAndDerivationPath = publicKeys[utxo.ownerDetails.address.pubKeyHash()]!; |
| 1577 | |
| 1578 | readyInputs.add(PSBTReadyUtxoWithAddress( |
| 1579 | utxo: utxo.utxo, |
| 1580 | rawTx: rawTx, |
| 1581 | ownerDetails: utxo.ownerDetails, |
| 1582 | ownerDerivationPath: publicKeyAndDerivationPath.derivationPath, |
| 1583 | ownerMasterFingerprint: masterFingerprint, |
| 1584 | ownerPublicKey: publicKeyAndDerivationPath.publicKey, |
| 1585 | )); |
| 1586 | } |
| 1587 | |
| 1588 | final orderedOutputs = orderOutputs(outputs, outputOrdering); |
| 1589 | |
| 1590 | final rawHex = await (hardwareWalletService as LitecoinHardwareWalletService) |
| 1591 | .signLitecoinTransaction( |
| 1592 | outputs: orderedOutputs, inputs: readyInputs, publicKeys: publicKeys); |
| 1593 | |
| 1594 | return BtcTransaction.fromRaw(rawHex); |
| 1595 | } |
| 1596 | } |