partial void ProcessEachInitIvExpand2(InitIvExpand2 initIvExpand2)
{
packetHandler.ReceivedFinalInitAck();
var(publicKey, privateKey) = TsCrypt.GenerateTemporaryKey();
var ekBase64 = Convert.ToBase64String(publicKey);
var toSign = new byte[86];
Array.Copy(publicKey, 0, toSign, 0, 32);
var beta = Convert.FromBase64String(initIvExpand2.Beta);
Array.Copy(beta, 0, toSign, 32, 54);
var sign = TsCrypt.Sign(connectionDataFull.Identity.PrivateKey, toSign);
var proof = Convert.ToBase64String(sign);
ClientEk(ekBase64, proof);
var result = tsCrypt.CryptoInit2(initIvExpand2.License, initIvExpand2.Omega, initIvExpand2.Proof, initIvExpand2.Beta, privateKey);
if (!result)
{
DisconnectInternal(context, CommandError.Custom($"Failed to calculate shared secret: {result.Error}"));
return;
}
DefaultClientInit();
}
async partial void ProcessEachInitIvExpand2(InitIvExpand2 initIvExpand2)
{
var ctx = context;
if (ctx is null)
{
throw new InvalidOperationException("context should be set");
}
ctx.PacketHandler.ReceivedFinalInitAck();
var(publicKey, privateKey) = TsCrypt.GenerateTemporaryKey();
var ekBase64 = Convert.ToBase64String(publicKey);
var toSign = new byte[86];
Array.Copy(publicKey, 0, toSign, 0, 32);
var beta = Convert.FromBase64String(initIvExpand2.Beta);
Array.Copy(beta, 0, toSign, 32, 54);
var sign = TsCrypt.Sign(ctx.ConnectionDataFull.Identity.PrivateKey, toSign);
var proof = Convert.ToBase64String(sign);
await ClientEk(ekBase64, proof);
var result = ctx.TsCrypt.CryptoInit2(initIvExpand2.License, initIvExpand2.Omega, initIvExpand2.Proof, initIvExpand2.Beta, privateKey);
if (!result)
{
ChangeState(ctx, TsClientStatus.Disconnected, CommandError.Custom($"Failed to calculate shared secret: {result.Error}"));
return;
}
await DefaultClientInit(ctx);
}
public static bool IsUidValid(string uid)
{
if (uid == "anonymous" || uid == "serveradmin")
{
return(true);
}
var result = TsCrypt.Base64Decode(uid);
return(result.Ok && result.Value.Length == 20);
}
public PacketHandler(TsCrypt ts3Crypt, Id id)
{
receiveQueueCommand = new RingQueue <Packet <TIn> >(ReceivePacketWindowSize, ushort.MaxValue + 1);
receiveQueueCommandLow = new RingQueue <Packet <TIn> >(ReceivePacketWindowSize, ushort.MaxValue + 1);
receiveWindowVoice = new GenerationWindow(ushort.MaxValue + 1);
receiveWindowVoiceWhisper = new GenerationWindow(ushort.MaxValue + 1);
NetworkStats = new NetworkStats();
packetCounter = new ushort[TsCrypt.PacketTypeKinds];
generationCounter = new uint[TsCrypt.PacketTypeKinds];
this.tsCrypt = ts3Crypt;
this.id = id;
}
/// <summary>Tries to connect to a server.</summary>
/// <param name="conData">Set the connection information properties as needed.
/// For further details about each setting see the respective property documentation in <see cref="ConnectionData"/></param>
/// <exception cref="ArgumentException">When some required values are not set or invalid.</exception>
/// <exception cref="TsException">When the connection could not be established.</exception>
public override void Connect(ConnectionData conData)
{
if (!(conData is ConnectionDataFull conDataFull))
{
throw new ArgumentException($"Use the {nameof(ConnectionDataFull)} derivative to connect with the full client.", nameof(conData));
}
if (conDataFull.Identity is null)
{
throw new ArgumentNullException(nameof(conDataFull.Identity));
}
if (conDataFull.VersionSign is null)
{
throw new ArgumentNullException(nameof(conDataFull.VersionSign));
}
connectionDataFull = conDataFull;
ConnectionData = conData;
Disconnect();
if (!TsDnsResolver.TryResolve(conData.Address, out remoteAddress))
{
throw new TsException("Could not read or resolve address.");
}
lock (statusLock)
{
returnCode = 0;
status = TsClientStatus.Connecting;
VersionSign = conDataFull.VersionSign;
tsCrypt = new TsCrypt();
tsCrypt.Identity = conDataFull.Identity;
var ctx = new ConnectionContext {
WasExit = false
};
context = ctx;
packetHandler = new PacketHandler <S2C, C2S>(tsCrypt, conData.LogId);
packetHandler.PacketEvent = (ref Packet <S2C> packet) => { PacketEvent(ctx, ref packet); };
packetHandler.StopEvent = (closeReason) => { ctx.ExitReason = closeReason; DisconnectInternal(ctx, setStatus: TsClientStatus.Disconnected); };
packetHandler.Connect(remoteAddress);
dispatcher = new ExtraThreadEventDispatcher();
dispatcher.Init(InvokeEvent, conData.LogId);
}
}
public bool CheckValid() => TsCrypt.EdCheck(this);
public IdentityData(BigInteger privateKey, ECPoint publicKey = null)
{
PrivateKey = privateKey ?? throw new ArgumentNullException(nameof(privateKey));
PublicKey = publicKey ?? TsCrypt.RestorePublicFromPrivateKey(privateKey);
}
public static R <(LicenseBlock block, int read), string> Parse(ReadOnlySpan <byte> data)
{
if (data.Length < MinBlockLen)
{
return("License too short");
}
if (data[0] != 0)
{
return($"Wrong key kind {data[0]} in license");
}
LicenseBlock block;
int read;
switch (data[33])
{
case 0:
var result = ReadNullString(data.Slice(46));
if (!result.Ok)
{
return(result.Error);
}
var nullStr = result.Value;
block = new IntermediateLicenseBlock {
Issuer = nullStr.str
};
read = 5 + nullStr.read;
break;
case 2:
if (!Enum.IsDefined(typeof(ServerLicenseType), data[42]))
{
return($"Unknown license type {data[42]}");
}
result = ReadNullString(data.Slice(47));
if (!result.Ok)
{
return(result.Error);
}
nullStr = result.Value;
block = new ServerLicenseBlock {
Issuer = result.Value.str, LicenseType = (ServerLicenseType)data[42]
};
read = 6 + nullStr.read;
break;
case 32:
block = new EphemeralLicenseBlock();
read = 0;
break;
default:
return($"Invalid license block type {data[33]}");
}
block.NotValidBefore = Tools.UnixTimeStart.AddSeconds(BinaryPrimitives.ReadUInt32BigEndian(data.Slice(34)) + 0x50e22700uL);
block.NotValidAfter = Tools.UnixTimeStart.AddSeconds(BinaryPrimitives.ReadUInt32BigEndian(data.Slice(38)) + 0x50e22700uL);
if (block.NotValidAfter < block.NotValidBefore)
{
return("License times are invalid");
}
block.Key = data.Slice(1, 32).ToArray();
var allLen = MinBlockLen + read;
var hash = TsCrypt.Hash512It(data.Slice(1, allLen - 1).ToArray());
block.Hash = hash.AsSpan(0, 32).ToArray();
return(block, allLen);
}