internal byte[] ProcessInit1(byte[] data)
{
const int versionLen = 4;
const int initTypeLen = 1;
if (data == null)
{
var sendData = new byte[versionLen + initTypeLen + 4 + 4 + 8];
Array.Copy(Initversion, 0, sendData, 0, versionLen); // initVersion
sendData[versionLen] = 0x00; // initType
NetUtil.H2N(Util.UnixNow, sendData, versionLen + initTypeLen); // 4byte timestamp
for (int i = 0; i < 4; i++)
{
sendData[i + versionLen + initTypeLen + 4] = (byte)Util.Random.Next(0, 256); // 4byte random
}
return(sendData);
}
if (data.Length < initTypeLen)
{
return(null);
}
int type = data[0];
if (type == 1)
{
var sendData = new byte[versionLen + initTypeLen + 16 + 4];
Array.Copy(Initversion, 0, sendData, 0, versionLen); // initVersion
sendData[versionLen] = 0x02; // initType
Array.Copy(data, 1, sendData, versionLen + initTypeLen, 20);
return(sendData);
}
else if (type == 3)
{
byte[] alphaBytes = new byte[10];
Util.Random.NextBytes(alphaBytes);
var alpha = Convert.ToBase64String(alphaBytes);
string initAdd = Ts3Command.BuildToString("clientinitiv",
new ICommandPart[] {
new CommandParameter("alpha", alpha),
new CommandParameter("omega", Identity.PublicKeyString),
new CommandParameter("ip", string.Empty)
});
var textBytes = Util.Encoder.GetBytes(initAdd);
// Prepare solution
int level = NetUtil.N2Hint(data, initTypeLen + 128);
byte[] y = SolveRsaChallange(data, initTypeLen, level);
// Copy bytes for this result: [Version..., InitType..., data..., y..., text...]
var sendData = new byte[versionLen + initTypeLen + 232 + 64 + textBytes.Length];
// Copy this.Version
Array.Copy(Initversion, 0, sendData, 0, versionLen);
// Write InitType
sendData[versionLen] = 0x04;
// Copy data
Array.Copy(data, initTypeLen, sendData, versionLen + initTypeLen, 232);
// Copy y
Array.Copy(y, 0, sendData, versionLen + initTypeLen + 232 + (64 - y.Length), y.Length);
// Copy text
Array.Copy(textBytes, 0, sendData, versionLen + initTypeLen + 232 + 64, textBytes.Length);
return(sendData);
}
else
{
return(null);
}
}
