2024-05-05 01:44:50 +00:00
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import 'dart:async';
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import 'dart:typed_data';
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2024-10-23 15:38:31 +00:00
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import 'package:cw_core/hardware/device_not_connected_exception.dart'
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as exception;
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2024-12-09 18:23:59 +00:00
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import 'package:cw_core/utils/print_verbose.dart';
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2024-05-05 01:44:50 +00:00
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import 'package:ledger_ethereum/ledger_ethereum.dart';
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import 'package:ledger_flutter_plus/ledger_flutter_plus.dart';
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2024-05-05 01:44:50 +00:00
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import 'package:web3dart/crypto.dart';
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import 'package:web3dart/web3dart.dart';
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class EvmLedgerCredentials extends CredentialsWithKnownAddress {
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final String _address;
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EthereumLedgerApp? ethereumLedgerApp;
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EvmLedgerCredentials(this._address);
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@override
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EthereumAddress get address => EthereumAddress.fromHex(_address);
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void setLedgerConnection(LedgerConnection connection,
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[String? derivationPath]) {
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ethereumLedgerApp = EthereumLedgerApp(connection,
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derivationPath: derivationPath ?? "m/44'/60'/0'/0/0");
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}
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@override
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MsgSignature signToEcSignature(Uint8List payload,
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{int? chainId, bool isEIP1559 = false}) =>
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throw UnimplementedError("EvmLedgerCredentials.signToEcSignature");
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@override
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Future<MsgSignature> signToSignature(Uint8List payload,
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{int? chainId, bool isEIP1559 = false}) async {
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if (ethereumLedgerApp == null) {
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throw exception.DeviceNotConnectedException();
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}
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final sig = await ethereumLedgerApp!.signTransaction(payload);
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final v = sig[0].toInt();
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final r = bytesToHex(sig.sublist(1, 1 + 32));
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final s = bytesToHex(sig.sublist(1 + 32, 1 + 32 + 32));
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var truncChainId = chainId ?? 1;
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while (truncChainId.bitLength > 32) {
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truncChainId >>= 8;
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}
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final truncTarget = truncChainId * 2 + 35;
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int parity = v;
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if (truncTarget & 0xff == v) {
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parity = 0;
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} else if ((truncTarget + 1) & 0xff == v) {
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parity = 1;
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}
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// https://github.com/ethereumjs/ethereumjs-util/blob/8ffe697fafb33cefc7b7ec01c11e3a7da787fe0e/src/signature.ts#L26
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int chainIdV;
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if (isEIP1559) {
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chainIdV = v;
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} else {
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chainIdV = chainId != null ? (parity + (chainId * 2 + 35)) : parity;
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}
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return MsgSignature(
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BigInt.parse(r, radix: 16), BigInt.parse(s, radix: 16), chainIdV);
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}
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@override
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Future<Uint8List> signPersonalMessage(Uint8List payload,
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{int? chainId}) async {
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if (isNotConnected) throw exception.DeviceNotConnectedException();
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final sig = await ethereumLedgerApp!.signMessage(payload);
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final r = sig.sublist(1, 1 + 32);
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final s = sig.sublist(1 + 32, 1 + 32 + 32);
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final v = [sig[0]];
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// https://github.com/ethereumjs/ethereumjs-util/blob/8ffe697fafb33cefc7b7ec01c11e3a7da787fe0e/src/signature.ts#L63
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return Uint8List.fromList(r + s + v);
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}
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@override
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Uint8List signPersonalMessageToUint8List(Uint8List payload, {int? chainId}) =>
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throw UnimplementedError(
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"EvmLedgerCredentials.signPersonalMessageToUint8List");
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Future<void> provideERC20Info(
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String erc20ContractAddress, int chainId) async {
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if (isNotConnected) throw exception.DeviceNotConnectedException();
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try {
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await ethereumLedgerApp!.getAndProvideERC20TokenInformation(
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erc20ContractAddress: erc20ContractAddress, chainId: chainId);
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} catch (e) {
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printV(e);
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rethrow;
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// if (e.errorCode != -28672) rethrow;
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}
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}
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bool get isNotConnected => ethereumLedgerApp == null || ethereumLedgerApp!.connection.isDisconnected;
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}
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