public static string EncodeShareCode(MatchSignature signature)
{
var bytes = new byte[19];
Array.Copy(BitConverter.GetBytes(signature.matchId), 0, bytes, 1, 8);
Array.Copy(BitConverter.GetBytes(signature.outcomeId), 0, bytes, 9, 8);
Array.Copy(BitConverter.GetBytes((ushort)(signature.token & ((1 << 16) - 1))), 0, bytes, 17, 2);
string output = "";
var aVeryLargeNumber = new BigInteger(bytes.Reverse().ToArray());
for (int i = 0; i < 25; i++)
{
int currentIndex = (int)(aVeryLargeNumber % DICTIONARY.Length);
output += DICTIONARY[currentIndex];
aVeryLargeNumber /= DICTIONARY.Length;
}
output = "CSGO-" + output.Substring(0, 5) + "-" + output.Substring(5, 5) + "-" + output.Substring(10, 5) + "-" + output.Substring(15, 5) + "-" + output.Substring(20, 5);
return(output);
}
public static MatchSignature DecodeShareCode(string sharecode)
{
MatchSignature decodedSignature = new MatchSignature();
if (CheckShareCode(sharecode))
{
sharecode = sharecode.Replace("CSGO-", "");
sharecode = sharecode.Replace("-", "");
var aVeryLargeNumber = BigInteger.Zero;
for (int i = sharecode.Length - 1; i >= 0; i--)
{
aVeryLargeNumber = aVeryLargeNumber * DICTIONARY.Length + DICTIONARY.IndexOf(sharecode[i]);
}
var bytes = aVeryLargeNumber.ToByteArray();
// sometimes the number isn't unsigned, add a 00 byte at the end (the array is reversed later) of the array to make sure it is
if (bytes.Length == 18)
{
bytes = bytes.Concat(new byte[] { 0 }).ToArray();
}
bytes = bytes.Reverse().ToArray();
byte[] longContainer = new byte[8];
Array.Copy(bytes, 1, longContainer, 0, 8);
decodedSignature.matchId = BitConverter.ToUInt64(longContainer, 0);
Array.Copy(bytes, 9, longContainer, 0, 8);
decodedSignature.outcomeId = BitConverter.ToUInt64(longContainer, 0);
Array.Copy(bytes, 17, longContainer, 0, 2);
longContainer[2] = 0;
longContainer[3] = 0;
decodedSignature.token = BitConverter.ToUInt32(longContainer, 0);
}
else
{
Debug.LogError("MatchInfo: Error decoding sharecode, unknown format");
}
return(decodedSignature);
}
