public Dnss(TUN2Socks tun2socks, int port)
{
this.m_iVfptrAddress = BitConverter.ToInt32(IPAddress.Parse("198.18.0.0").GetAddressBytes(), 0);
this.m_iVfptrAddress = IPAddress.NetworkToHostOrder(this.m_iVfptrAddress);
this.m_poTUN2Socks = tun2socks ?? throw new ArgumentNullException(nameof(tun2socks));
this.m_poSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
this.m_poSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
this.m_poSocket.Bind(new IPEndPoint(IPAddress.Any, port));
}
protected virtual bool OnRequest(DnsRequest request, EndPoint remoteEP)
{
var pac = this.m_poTUN2Socks.GetPAC();
if (!pac.IsReady())
{
return this.SuperiorAcquired(request, (message, response) => this.SendTo(response.ToArray(), remoteEP));
}
lock (this.m_poDnsMap)
{
this.m_poDnsMap.TryGetValue(request.Domain, out IPAddress address);
if (address != null)
{
return this.SendTo(this.CreateResponse(request, address).ToArray(), remoteEP);
}
}
return this.SuperiorAcquired(request, (message, response) =>
{
string hijacked = string.Empty;
lock (this.m_poDnsMap)
{
//var addresses = DnsResponse.GetAddresses(response.Answers);
//if (!this.IsNotAllowAgent(addresses))
{
hijacked = "[:hijacked] ";
IPAddress address = this.NewVirtualAddress();
{
this.m_poDnsMap[request.Domain] = address;
this.m_poDnsMapFar[address] = request.Domain;
}
response = this.CreateResponse(request, address);
}
}
TUN2Socks.PrintTraceLine($"NSLookup[{request.QueryType}, {request.QueryClass}]: {request.Domain} {hijacked}-> {string.Join(" ", DnsResponse.FetchAddresses(response.Answers))}");
this.SendTo(response.ToArray(), remoteEP);
});
}
public TUN2SocksSocketScheduler(TUN2Socks tun2socks, ILayerLocator locator) : base(locator)
{
this.m_tun2socks = tun2socks ?? throw new ArgumentNullException(nameof(tun2socks));
}
public Dnss(TUN2Socks tun2socks) : this(tun2socks, Dnss.Port)
{
}
public TUN2Layer3Locator(TUN2Socks tun2socks, string componentId) : base(componentId)
{
this.Sockets = tun2socks.CreateSocketScheduler(this);
}
public TUN2SocksSocket(TUN2Socks tun2socks, IPcb pcb) : base(pcb)
{
this.m_tun2socks = tun2socks ?? throw new ArgumentNullException(nameof(tun2socks));
}
