mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-11-18 02:07:43 +00:00
364 lines
9.9 KiB
Dart
364 lines
9.9 KiB
Dart
import 'dart:typed_data';
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import 'package:bech32/bech32.dart';
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import 'package:bitbox/bitbox.dart' as bitbox;
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import 'package:bs58check/bs58check.dart' as bs58check;
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import 'package:coinlib_flutter/coinlib_flutter.dart' as coinlib;
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import 'package:stackwallet/models/isar/models/blockchain_data/address.dart';
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import 'package:stackwallet/models/node_model.dart';
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import 'package:stackwallet/utilities/amount/amount.dart';
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import 'package:stackwallet/utilities/default_nodes.dart';
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import 'package:stackwallet/utilities/enums/derive_path_type_enum.dart';
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import 'package:stackwallet/wallets/crypto_currency/crypto_currency.dart';
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import 'package:stackwallet/wallets/crypto_currency/interfaces/electrumx_currency_interface.dart';
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import 'package:stackwallet/wallets/crypto_currency/intermediate/bip39_hd_currency.dart';
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class Bitcoincash extends Bip39HDCurrency with ElectrumXCurrencyInterface {
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Bitcoincash(super.network) {
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_idMain = "bitcoincash";
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switch (network) {
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case CryptoCurrencyNetwork.main:
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_id = _idMain;
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_name = "Bitcoin Cash";
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_ticker = "BCH";
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_uriScheme = "bitcoincash";
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case CryptoCurrencyNetwork.test:
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_id = "bitcoincashTestnet";
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_name = "tBitcoin Cash";
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_ticker = "tBCH";
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_uriScheme = "bchtest";
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default:
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throw Exception("Unsupported network: $network");
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}
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}
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late final String _id;
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@override
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String get identifier => _id;
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late final String _idMain;
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@override
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String get mainNetId => _idMain;
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late final String _name;
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@override
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String get prettyName => _name;
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late final String _uriScheme;
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@override
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String get uriScheme => _uriScheme;
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late final String _ticker;
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@override
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String get ticker => _ticker;
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@override
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int get maxUnusedAddressGap => 50;
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@override
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int get maxNumberOfIndexesToCheck => 10000000;
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@override
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// change this to change the number of confirms a tx needs in order to show as confirmed
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int get minConfirms => 0; // bch zeroconf
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@override
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bool get torSupport => true;
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@override
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List<DerivePathType> get supportedDerivationPathTypes => [
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DerivePathType.bip44,
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if (network != CryptoCurrencyNetwork.test) DerivePathType.bch44,
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];
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@override
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String get genesisHash {
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switch (network) {
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case CryptoCurrencyNetwork.main:
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return "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f";
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case CryptoCurrencyNetwork.test:
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return "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943";
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default:
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throw Exception("Unsupported network: $network");
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}
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}
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@override
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Amount get dustLimit => Amount(
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rawValue: BigInt.from(546),
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fractionDigits: fractionDigits,
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);
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@override
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coinlib.Network get networkParams {
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switch (network) {
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case CryptoCurrencyNetwork.main:
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return coinlib.Network(
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wifPrefix: 0x80,
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p2pkhPrefix: 0x00,
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p2shPrefix: 0x05,
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privHDPrefix: 0x0488ade4,
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pubHDPrefix: 0x0488b21e,
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bech32Hrp: "bc",
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messagePrefix: '\x18Bitcoin Signed Message:\n',
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minFee: BigInt.from(1), // TODO [prio=high].
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minOutput: dustLimit.raw, // TODO.
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feePerKb: BigInt.from(1), // TODO.
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);
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case CryptoCurrencyNetwork.test:
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return coinlib.Network(
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wifPrefix: 0xef,
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p2pkhPrefix: 0x6f,
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p2shPrefix: 0xc4,
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privHDPrefix: 0x04358394,
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pubHDPrefix: 0x043587cf,
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bech32Hrp: "tb",
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messagePrefix: "\x18Bitcoin Signed Message:\n",
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minFee: BigInt.from(1), // TODO [prio=high].
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minOutput: dustLimit.raw, // TODO.
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feePerKb: BigInt.from(1), // TODO.
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);
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default:
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throw Exception("Unsupported network: $network");
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}
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}
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@override
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String addressToScriptHash({required String address}) {
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try {
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if (bitbox.Address.detectFormat(address) ==
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bitbox.Address.formatCashAddr &&
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_validateCashAddr(address)) {
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address = bitbox.Address.toLegacyAddress(address);
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}
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final addr = coinlib.Address.fromString(address, networkParams);
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return Bip39HDCurrency.convertBytesToScriptHash(
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addr.program.script.compiled);
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} catch (e) {
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rethrow;
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}
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}
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@override
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String constructDerivePath({
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required DerivePathType derivePathType,
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int account = 0,
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required int chain,
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required int index,
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}) {
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String coinType;
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switch (networkParams.wifPrefix) {
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case 0x80:
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switch (derivePathType) {
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case DerivePathType.bip44:
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coinType = "145"; // bch mainnet
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break;
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case DerivePathType.bch44: // bitcoin.com wallet specific
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coinType = "0"; // bch mainnet
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break;
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default:
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throw Exception(
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"DerivePathType $derivePathType not supported for coinType");
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}
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break;
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case 0xef:
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coinType = "1"; // btc testnet
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break;
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default:
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throw Exception("Invalid Bitcoin network wif used!");
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}
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final int purpose;
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switch (derivePathType) {
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case DerivePathType.bip44:
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case DerivePathType.bch44:
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purpose = 44;
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break;
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default:
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throw Exception("DerivePathType $derivePathType not supported");
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}
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return "m/$purpose'/$coinType'/$account'/$chain/$index";
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}
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@override
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({coinlib.Address address, AddressType addressType}) getAddressForPublicKey({
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required coinlib.ECPublicKey publicKey,
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required DerivePathType derivePathType,
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}) {
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switch (derivePathType) {
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case DerivePathType.bip44:
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case DerivePathType.bch44:
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final addr = coinlib.P2PKHAddress.fromPublicKey(
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publicKey,
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version: networkParams.p2pkhPrefix,
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);
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return (address: addr, addressType: AddressType.p2pkh);
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default:
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throw Exception("DerivePathType $derivePathType not supported");
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}
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}
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@override
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bool validateAddress(String address) {
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try {
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// 0 for bitcoincash: address scheme, 1 for legacy address
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final format = bitbox.Address.detectFormat(address);
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if (network == CryptoCurrencyNetwork.test) {
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return true;
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}
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if (format == bitbox.Address.formatCashAddr) {
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return _validateCashAddr(address);
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} else {
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return address.startsWith("1");
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}
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} catch (e) {
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return false;
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}
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}
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bool _validateCashAddr(String cashAddr) {
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String addr = cashAddr;
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if (cashAddr.contains(":")) {
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addr = cashAddr.split(":").last;
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}
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return addr.startsWith("q") /*|| addr.startsWith("p")*/;
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// Do not validate "p" (P2SH) addresses.
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}
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@override
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DerivePathType addressType({required String address}) {
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Uint8List? decodeBase58;
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Segwit? decodeBech32;
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try {
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if (bitbox.Address.detectFormat(address) ==
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bitbox.Address.formatCashAddr) {
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if (_validateCashAddr(address)) {
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address = bitbox.Address.toLegacyAddress(address);
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} else {
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throw ArgumentError('$address is not currently supported');
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}
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}
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} catch (_) {
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// invalid cash addr format
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}
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try {
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decodeBase58 = bs58check.decode(address);
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} catch (err) {
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// Base58check decode fail
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}
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if (decodeBase58 != null) {
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if (decodeBase58[0] == networkParams.p2pkhPrefix) {
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// P2PKH
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return DerivePathType.bip44;
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}
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if (decodeBase58[0] == networkParams.p2shPrefix) {
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// P2SH
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return DerivePathType.bip49;
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}
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throw ArgumentError('Invalid version or Network mismatch');
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} else {
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try {
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decodeBech32 = segwit.decode(address);
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} catch (err) {
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// Bech32 decode fail
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}
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if (decodeBech32 != null) {
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if (networkParams.bech32Hrp != decodeBech32.hrp) {
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throw ArgumentError('Invalid prefix or Network mismatch');
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}
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if (decodeBech32.version != 0) {
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throw ArgumentError('Invalid address version');
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}
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}
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}
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throw ArgumentError('$address has no matching Script');
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}
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@override
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NodeModel get defaultNode {
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switch (network) {
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case CryptoCurrencyNetwork.main:
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return NodeModel(
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host: "bitcoincash.stackwallet.com",
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port: 50002,
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name: DefaultNodes.defaultName,
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id: DefaultNodes.buildId(this),
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useSSL: true,
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enabled: true,
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coinName: identifier,
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isFailover: true,
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isDown: false,
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);
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case CryptoCurrencyNetwork.test:
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return NodeModel(
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host: "bitcoincash-testnet.stackwallet.com",
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port: 60002,
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name: DefaultNodes.defaultName,
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id: DefaultNodes.buildId(this),
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useSSL: true,
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enabled: true,
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coinName: identifier,
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isFailover: true,
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isDown: false,
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);
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default:
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throw UnimplementedError();
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}
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}
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@override
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int get defaultSeedPhraseLength => 12;
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@override
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int get fractionDigits => 8;
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@override
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bool get hasBuySupport => true;
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@override
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bool get hasMnemonicPassphraseSupport => true;
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@override
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List<int> get possibleMnemonicLengths => [defaultSeedPhraseLength, 24];
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@override
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AddressType get primaryAddressType => AddressType.p2pkh;
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@override
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BigInt get satsPerCoin => BigInt.from(100000000);
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@override
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int get targetBlockTimeSeconds => 600;
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@override
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DerivePathType get primaryDerivePathType => DerivePathType.bip44;
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@override
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Uri defaultBlockExplorer(String txid) {
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switch (network) {
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case CryptoCurrencyNetwork.main:
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return Uri.parse(
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"https://blockchair.com/bitcoin-cash/transaction/$txid",
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);
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case CryptoCurrencyNetwork.test:
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return Uri.parse(
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"https://blockexplorer.one/bitcoin-cash/testnet/tx/$txid",
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);
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default:
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throw Exception(
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"Unsupported network for defaultBlockExplorer(): $network",
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);
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}
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}
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}
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