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use coinlib address parsing to check address type and not rely specifically on btc address prefixes to validate taproot addresses

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julian 2024-04-12 14:57:41 -06:00
parent e15e8e3530
commit 98410ea8f0
1 changed files with 11 additions and 41 deletions
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52
lib/wallets/crypto_currency/intermediate/bip39_hd_currency.dart
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@ -1,5 +1,3 @@
import 'package:bech32/bech32.dart';
import 'package:bs58check/bs58check.dart' as bs58check;
import 'package:coinlib_flutter/coinlib_flutter.dart' as coinlib;
import 'package:crypto/crypto.dart';
import 'package:flutter/foundation.dart';
@ -57,47 +55,19 @@ abstract class Bip39HDCurrency extends Bip39Currency {
}
DerivePathType addressType({required String address}) {
Uint8List? decodeBase58;
Segwit? decodeBech32;
try {
decodeBase58 = bs58check.decode(address);
} catch (err) {
// Base58check decode fail
}
if (decodeBase58 != null) {
if (decodeBase58[0] == networkParams.p2pkhPrefix) {
// P2PKH
return DerivePathType.bip44;
}
if (decodeBase58[0] == networkParams.p2shPrefix) {
// P2SH
return DerivePathType.bip49;
}
throw ArgumentError('Invalid version or Network mismatch');
} else {
try {
decodeBech32 = segwit.decode(address, networkParams.bech32Hrp);
} catch (err) {
// Bech32 decode fail
}
if (decodeBech32?.hrp != null) {
// P2TR Bech32m addresses have null hrp.
if (networkParams.bech32Hrp != decodeBech32!.hrp) {
throw ArgumentError('Invalid prefix or Network mismatch');
}
if (decodeBech32.version != 0) {
throw ArgumentError('Invalid address version');
}
} else {
// P2TR.
if (address.startsWith('bc1p') || address.startsWith('tb1p')) {
// P2TR (Taproot).
return DerivePathType.bip86;
}
}
final address2 = coinlib.Address.fromString(address, networkParams);
// P2WPKH
if (address2 is coinlib.P2PKHAddress) {
return DerivePathType.bip44;
} else if (address2 is coinlib.P2SHAddress) {
return DerivePathType.bip49;
} else if (address2 is coinlib.P2WPKHAddress) {
return DerivePathType.bip84;
} else if (address2 is coinlib.P2TRAddress) {
return DerivePathType.bip86;
} else {
// TODO: [prio=med] better error handling
throw ArgumentError('Invalid address');
}
}
}