private void listener()
{
frmMain.authentication_response authenticationResponse = new frmMain.authentication_response();
string[] strArrays;
byte[] numArray;
TcpClient tcpClient = new TcpClient();
this.listener_handler.Start();
while (true)
{
try
{
if (this.listener_running)
{
if (this.listener_handler.Pending())
{
tcpClient = this.listener_handler.AcceptTcpClient();
tcpClient.ReceiveTimeout = 7000;
}
if (tcpClient.Connected)
{
log("client connected!\n", true);
string str = tcpClient.Client.RemoteEndPoint.ToString().Split(":".ToCharArray())[0];
byte[] numArray1 = new byte[49];
if (tcpClient.GetStream().Read(numArray1, 0, 49) > 0)
{
authentication_request authenticationRequest = b2s <authentication_request>(numArray1);
string str1 = "";
byte[] cPUKey = authenticationRequest.CPUKey;
for (int i = 0; i < (int)cPUKey.Length; i++)
{
byte num = cPUKey[i];
str1 = string.Concat(str1, num.ToString("X2"));
}
ClientHelper.KeyResponse keyResponse = ClientHelper.CheckCPUKey(str1);
if (keyResponse == ClientHelper.KeyResponse.Banned)
{
strArrays = new string[] { "Banned user (", str1, ", ", str, ") connected, rejecting connection.\n" };
this.log(string.Concat(strArrays), true);
tcpClient.Close();
}
else if (keyResponse == ClientHelper.KeyResponse.Registered)
{
string text = "";
bool flag = false;
int num1 = 0;
ClientHelper.TierType tier = ClientHelper.TierType.Client;
string text1 = "";
int num2 = 0;
while (num2 < listViewEx1.Items.Count)
{
if (!(listViewEx1.Items[num2].SubItems[2].Text == str1))
{
num2++;
}
else
{
text = listViewEx1.Items[num2].SubItems[3].Text;
flag = DateTime.Compare(DateTime.Parse(text), DateTime.Now) == 1;
num1 = int.Parse(listViewEx1.Items[num2].SubItems[0].Text);
tier = ClientHelper.GetTier(num2);
text1 = listViewEx1.Items[num2].SubItems[1].Text;
listViewEx1.Items[num2].SubItems[4].Text = str;
ClientHelper.EditIP(num2, str);
break;
}
}
if (!(XEXHelper.CheckXEXVersion(authenticationRequest.XEXVersion) ? false : ClientHelper.GetTier(num1) != ClientHelper.TierType.Admin))
{
log(string.Concat(text1, " has connected ", (flag ? "and has time" : "but has no time"), ", sending authentication notice now.\n"), true);
SHA1 sHA1 = SHA1.Create();
numArray = new byte[] { Convert.ToByte(tier) };
sHA1.TransformFinalBlock(numArray, 0, 1);
byte[] hash = sHA1.Hash;
authenticationResponse.Tier = (byte)tier;
byte[] numArray2 = new byte[16];
numArray = numArray2;
authenticationResponse.PacketChecksum = numArray2;
Array.Copy(hash, numArray, 16);
NetworkStream stream = tcpClient.GetStream();
numArray = new byte[] { 15 };
stream.Write(numArray, 0, 1);
if (!flag)
{
tcpClient.GetStream().Write(new byte[] { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 0, 17);
}
else
{
tcpClient.GetStream().Write(this.s2b <frmMain.authentication_response>(authenticationResponse), 0, 17);
}
tcpClient.Close();
}
else if (!flag)
{
log(string.Concat(text1, " has connected with an outdated .xex but doesn't have any time left, sending authentication notice now.\n"), true);
NetworkStream stream1 = tcpClient.GetStream();
numArray = new byte[] { 15 };
stream1.Write(numArray, 0, 1);
tcpClient.GetStream().Write(new byte[] { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 0, 17);
tcpClient.Close();
}
else
{
log(string.Concat(text1, " has connected but has an outdated .xex, sending update now.\n"), true);
NetworkStream networkStream1 = tcpClient.GetStream();
numArray = new byte[] { 63 };
networkStream1.Write(numArray, 0, 1);
byte[] numArray3 = File.ReadAllBytes(XEXHelper.GetXEXName());
byte[] bytes = BitConverter.GetBytes((int)numArray3.Length);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
tcpClient.GetStream().Write(bytes, 0, 4);
tcpClient.GetStream().Write(numArray3, 0, (int)numArray3.Length);
tcpClient.Close();
}
}
else if (!XEXHelper.CheckXEXChecksum(authenticationRequest.XEXChecksum))
{
strArrays = new string[] { "Unknown client (", str1, ", ", str, ") has connected with a modified .xex, banning now.\n" };
log(string.Concat(strArrays), true);
ClientHelper.BanCPUKey(str1);
NetworkStream stream2 = tcpClient.GetStream();
numArray = new byte[] { 15 };
stream2.Write(numArray, 0, 1);
tcpClient.GetStream().Write(new byte[] { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 0, 17);
tcpClient.Close();
}
else
{
strArrays = new string[] { "Unknown client (", str1, ", ", str, ") has connected", null, null };
strArrays[5] = (XEXHelper.CheckXEXVersion(authenticationRequest.XEXVersion) ? ", " : " with an outdated .xex, ");
strArrays[6] = "sending authentication notice now.\n";
log(string.Concat(strArrays), true);
NetworkStream networkStream2 = tcpClient.GetStream();
numArray = new byte[] { 15 };
networkStream2.Write(numArray, 0, 1);
tcpClient.GetStream().Write(new byte[] { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 0, 17);
tcpClient.Close();
}
}
}
}
}
catch (Exception exmsg)
{
log("Major server crash caught, resuming work.\n", true);
log("exception: \n", true);
log(exmsg.Message);
}
}
}