| 1 | import 'package:bbqrdart/bbqrdart.dart'; |
| 2 | import 'package:cw_bitcoin/electrum_wallet.dart'; |
| 3 | import 'package:cw_core/amount/money.dart'; |
| 4 | import 'package:flutter/foundation.dart'; |
| 5 | import 'package:grpc/grpc.dart'; |
| 6 | import 'package:cw_bitcoin/exceptions.dart'; |
| 7 | import 'package:bitcoin_base/bitcoin_base.dart'; |
| 8 | import 'package:blockchain_utils/blockchain_utils.dart'; |
| 9 | import 'package:cw_core/pending_transaction.dart'; |
| 10 | import 'package:cw_bitcoin/electrum.dart'; |
| 11 | import 'package:cw_bitcoin/electrum_transaction_info.dart'; |
| 12 | import 'package:cw_core/transaction_direction.dart'; |
| 13 | import 'package:cw_core/wallet_type.dart'; |
| 14 | import 'package:cw_mweb/cw_mweb.dart'; |
| 15 | import 'package:cw_mweb/mwebd.pb.dart'; |
| 16 | import 'package:ur/cbor_lite.dart'; |
| 17 | import 'package:ur/ur.dart'; |
| 18 | import 'package:ur/ur_encoder.dart'; |
| 19 | |
| 20 | class PendingBitcoinTransaction with PendingTransaction { |
| 21 | PendingBitcoinTransaction( |
| 22 | this._tx, |
| 23 | this.type, { |
| 24 | required this.electrumClient, |
| 25 | required this.amount, |
| 26 | required this.fee, |
| 27 | required this.feeRate, |
| 28 | this.network, |
| 29 | required this.hasChange, |
| 30 | this.isSendAll = false, |
| 31 | this.hasTaprootInputs = false, |
| 32 | this.isMweb = false, |
| 33 | this.utxos = const [], |
| 34 | this.derivedOutputs = const [], |
| 35 | this.publicKeys, |
| 36 | this.commitOverride, |
| 37 | this.unsignedPsbt, |
| 38 | required this.isViewOnly, |
| 39 | }) : _listeners = <void Function(ElectrumTransactionInfo transaction)>[]; |
| 40 | |
| 41 | final WalletType type; |
| 42 | final BtcTransaction _tx; |
| 43 | final ElectrumClient electrumClient; |
| 44 | final String feeRate; |
| 45 | final BasedUtxoNetwork? network; |
| 46 | final bool isSendAll; |
| 47 | final bool hasChange; |
| 48 | final bool hasTaprootInputs; |
| 49 | final bool isViewOnly; |
| 50 | List<UtxoWithAddress> utxos; |
| 51 | |
| 52 | final List<BitcoinOutput> derivedOutputs; |
| 53 | |
| 54 | bool isMweb; |
| 55 | String? changeAddressOverride; |
| 56 | String? idOverride; |
| 57 | String? hexOverride; |
| 58 | List<String>? outputAddresses; |
| 59 | final Map<String, PublicKeyWithDerivationPath>? publicKeys; |
| 60 | Future<void> Function()? commitOverride; |
| 61 | |
| 62 | Uint8List? unsignedPsbt; |
| 63 | |
| 64 | @override |
| 65 | final Money amount; |
| 66 | |
| 67 | @override |
| 68 | final Money fee; |
| 69 | |
| 70 | @override |
| 71 | String get id => idOverride ?? _tx.txId(); |
| 72 | |
| 73 | @override |
| 74 | String get hex => hexOverride ?? _tx.serialize(); |
| 75 | |
| 76 | @override |
| 77 | String get amountFormatted => amount.toString(); |
| 78 | |
| 79 | @override |
| 80 | int? get outputCount => _tx.outputs.length; |
| 81 | |
| 82 | List<TxOutput> get outputs => _tx.outputs; |
| 83 | |
| 84 | bool get hasSilentPayment => _tx.hasSilentPayment; |
| 85 | |
| 86 | List<String?> get stealthAddresses => derivedOutputs |
| 87 | .where((out) => !out.isChange) |
| 88 | .map((out) => out.isSilentPayment |
| 89 | ? out.address.toAddress(network ?? BitcoinNetwork.mainnet) |
| 90 | : null) |
| 91 | .toList(); |
| 92 | |
| 93 | PendingChange? get change { |
| 94 | try { |
| 95 | final change = _tx.outputs.firstWhere((out) => out.isChange); |
| 96 | if (changeAddressOverride != null) { |
| 97 | return PendingChange(changeAddressOverride!, change.amount); |
| 98 | } |
| 99 | return PendingChange(change.scriptPubKey.toAddress(network: network), change.amount); |
| 100 | } catch (_) { |
| 101 | return null; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | final List<void Function(ElectrumTransactionInfo transaction)> _listeners; |
| 106 | |
| 107 | Future<void> _commit() async { |
| 108 | int? callId; |
| 109 | |
| 110 | final result = await electrumClient.broadcastTransaction( |
| 111 | transactionRaw: hex, network: network, idCallback: (id) => callId = id); |
| 112 | |
| 113 | if (result.isEmpty) { |
| 114 | if (callId != null) { |
| 115 | final error = electrumClient.getErrorMessage(callId!); |
| 116 | |
| 117 | if (error.contains("dust")) { |
| 118 | if (hasChange) { |
| 119 | throw BitcoinTransactionCommitFailedDustChange(); |
| 120 | } else if (!isSendAll) { |
| 121 | throw BitcoinTransactionCommitFailedDustOutput(); |
| 122 | } else { |
| 123 | throw BitcoinTransactionCommitFailedDustOutputSendAll(); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | if (error.contains("bad-txns-vout-negative")) { |
| 128 | throw BitcoinTransactionCommitFailedVoutNegative(); |
| 129 | } |
| 130 | |
| 131 | if (error.contains("non-BIP68-final")) { |
| 132 | throw BitcoinTransactionCommitFailedBIP68Final(); |
| 133 | } |
| 134 | |
| 135 | if (error.contains("min fee not met")) { |
| 136 | throw BitcoinTransactionCommitFailedLessThanMin(); |
| 137 | } |
| 138 | |
| 139 | throw BitcoinTransactionCommitFailed(errorMessage: error); |
| 140 | } |
| 141 | |
| 142 | throw BitcoinTransactionCommitFailed(); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | Future<void> _ltcCommit() async { |
| 147 | try { |
| 148 | final resp = await CwMweb.broadcast(BroadcastRequest(rawTx: BytesUtils.fromHexString(hex))); |
| 149 | idOverride = resp.txid; |
| 150 | } on GrpcError catch (e) { |
| 151 | throw BitcoinTransactionCommitFailed(errorMessage: e.message); |
| 152 | } catch (e) { |
| 153 | throw BitcoinTransactionCommitFailed(errorMessage: "Unknown error: ${e.toString()}"); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | @override |
| 158 | Future<void> commit() async { |
| 159 | if (commitOverride != null) { |
| 160 | return commitOverride?.call(); |
| 161 | } |
| 162 | |
| 163 | if (isMweb) { |
| 164 | await _ltcCommit(); |
| 165 | } else { |
| 166 | await _commit(); |
| 167 | } |
| 168 | |
| 169 | _listeners.forEach((listener) => listener(transactionInfo())); |
| 170 | } |
| 171 | |
| 172 | void addListener(void Function(ElectrumTransactionInfo transaction) listener) => |
| 173 | _listeners.add(listener); |
| 174 | |
| 175 | ElectrumTransactionInfo transactionInfo() => ElectrumTransactionInfo( |
| 176 | type, |
| 177 | id: id, |
| 178 | height: 0, |
| 179 | amount: amount, |
| 180 | direction: TransactionDirection.outgoing, |
| 181 | date: DateTime.now(), |
| 182 | isPending: true, |
| 183 | isReplaced: false, |
| 184 | confirmations: 0, |
| 185 | inputAddresses: _tx.inputs.map((input) => input.txId).toList(), |
| 186 | outputAddresses: outputAddresses, |
| 187 | fee: fee, |
| 188 | ); |
| 189 | |
| 190 | @override |
| 191 | bool shouldCommitUR() => isViewOnly; |
| 192 | |
| 193 | @override |
| 194 | Future<Map<String, String>> commitUR() { |
| 195 | var sourceBytes = unsignedPsbt!; |
| 196 | var cborEncoder = CBOREncoder(); |
| 197 | cborEncoder.encodeBytes(sourceBytes); |
| 198 | var ur = UR("psbt", cborEncoder.getBytes()); |
| 199 | var urLegacy = UR("crypto-psbt", cborEncoder.getBytes()); |
| 200 | // var ur = UR("psbt", Uint8List.fromList(List.generate(64*1024, (int x) => x % 256))); |
| 201 | var encoded = UREncoder(ur, 120); |
| 202 | var encodedLegacy = UREncoder(urLegacy, 120); |
| 203 | List<String> values = []; |
| 204 | List<String> valuesLegacy = []; |
| 205 | while (!encoded.isComplete) { |
| 206 | values.add(encoded.nextPart()); |
| 207 | valuesLegacy.add(encodedLegacy.nextPart()); |
| 208 | } |
| 209 | |
| 210 | final bbqrObj = BBQRPsbt.fromUint8List(sourceBytes); |
| 211 | List<String> bbqr = [ |
| 212 | bbqrObj.asString(), |
| 213 | ]; |
| 214 | while (!bbqrObj.isDone) { |
| 215 | bbqrObj.next(); |
| 216 | bbqr.add(bbqrObj.asString()); |
| 217 | } |
| 218 | |
| 219 | return Future.value({ |
| 220 | "Cupcake bcur": values.join("\n"), |
| 221 | "ColdCard bbqr": bbqr.join("\n"), |
| 222 | if (kDebugMode) "SeedSigner bcur legacy": valuesLegacy.join("\n"), |
| 223 | }); |
| 224 | } |
| 225 | } |