/// <summary>
/// Detects a given address format without validating it.
/// </summary>
/// <param name="str">The address to be detected</param>
/// <param name="format">Detected format</param>
/// <returns>True when detection is successful, false otherwise.</returns>
public static bool TryDetectFormat(string str, out CashFormat format)
{
if (!string.IsNullOrEmpty(str))
{
// According to Bitcoin Cash documentation, the prefix separator always exists. So, we use it as our primary guess factor.
// Reference: https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/cashaddr.md
var separatorIndex = str.IndexOf(':');
if (separatorIndex >= 0)
{
if (!Base32.ContainsInvalidCharacter(str, separatorIndex + 1))
{
format = CashFormat.Cashaddr;
return(true);
}
}
else
{
if (!Base58Encoder.ContainsInvalidCharacter(str))
{
format = CashFormat.Legacy;
return(true);
}
}
}
format = default;
return(false);
}
private static byte[] ParseAddressHash(CashFormat format, string str, Network expectedNetwork)
{
switch (format)
{
case CashFormat.Legacy:
var data = Encoders.Base58Check.DecodeData(str);
var versionBytes = expectedNetwork.GetVersionBytes(Base58Type.PUBKEY_ADDRESS, false);
if (versionBytes != null && data.StartWith(versionBytes))
{
if (data.Length == versionBytes.Length + 20)
{
return(data.Skip(versionBytes.Length).ToArray());
}
}
break;
case CashFormat.Cashaddr:
var cashaddr = CashAddr.Decode(str);
if (cashaddr.Prefix == expectedNetwork.Prefix)
{
return(cashaddr.Hash);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
throw new FormatException();
}
public static BchAddrData Create(CashFormat format, CashNetwork network, CashType type, byte[] hash)
{
return(new BchAddrData
{
Format = format,
Network = network,
Type = type,
Hash = hash,
});
}
/// <summary>
/// returns the Version byte for base58 formats
/// </summary>
/// <param name="format"></param>
/// <param name="network"></param>
/// <param name="type"></param>
/// <returns></returns>
private static byte GetVersionByte(CashFormat format, CashNetwork network, CashType type)
{
switch (format)
{
case CashFormat.Legacy:
if (network == CashNetwork.Mainnet && type == CashType.P2PKH)
{
return(0);
}
else if (network == CashNetwork.Mainnet && type == CashType.P2SH)
{
return(5);
}
break;
case CashFormat.Bitpay:
if (network == CashNetwork.Mainnet && type == CashType.P2PKH)
{
return(28);
}
else if (network == CashNetwork.Mainnet && type == CashType.P2SH)
{
return(40);
}
break;
}
if (network == CashNetwork.Testnet && type == CashType.P2PKH)
{
return(111);
}
else if (network == CashNetwork.Testnet && type == CashType.P2SH)
{
return(196);
}
else if (network == CashNetwork.RegTest && type == CashType.P2PKH)
{
return(111);
}
else if (network == CashNetwork.RegTest && type == CashType.P2SH)
{
return(196);
}
throw new Validation.ValidationError("Invalid parameters");
}
