public static void StartProxy(string remote_ip, ushort remote_port, string local_ip, ushort local_port) //Pushedx proxy.
{
Client.RefreshClient();
ConnectedToWorldwideServer = false;
Context local_context = new Context();
local_context.Security.GenerateSecurity(true, true, true);
Context remote_context = new Context();
SroClient.RemoteSecurity = remote_context.Security;
SroClient.LocalSecurity = local_context.Security;
remote_context.RelaySecurity = local_context.Security;
local_context.RelaySecurity = remote_context.Security;
List <Context> contexts = new List <Context>();
contexts.Add(local_context);
contexts.Add(remote_context);
using (Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
server.Bind(new IPEndPoint(IPAddress.Parse(local_ip), local_port));
server.Listen(1);
local_context.Socket = server.Accept();
}
using (local_context.Socket)
{
using (remote_context.Socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
remote_context.Socket.Connect(remote_ip, remote_port);
while (true)
{
#region TransferIncoming
foreach (Context context in contexts) // Network input event processing
{
try
{
if (context.Socket.Poll(0, SelectMode.SelectRead))
{
int count = context.Socket.Receive(context.Buffer.Buffer);
if (count == 0)
{
Console.WriteLine("Null recevied, disconnected");
OnProxyDisconnect?.Invoke();
throw new Exception("The remote connection has been lost.");
}
context.Security.Recv(context.Buffer.Buffer, 0, count);
}
}
catch (Exception ex)
{
//If local context disconnects && the account is connected to agent server > switch clientless
if (context == local_context && ConnectedToWorldwideServer == true && AutoSwitchToClientless)
{
OnProxyClientlessStart?.Invoke();
Clientless_Start(remote_context);
}
return;
}
}
foreach (Context context in contexts) // Logic event processing
{
List <Packet> packets = context.Security.TransferIncoming();
if (packets != null)
{
foreach (Packet packet in packets)
{
Dispatcher.Process(new Packet(packet));
OnProxyServerPacketReceive?.Invoke(new Packet(packet));
if (packet.Opcode == 0xB001)
{
ConnectedToWorldwideServer = true;
}
if (packet.Opcode == 0x5000 || packet.Opcode == 0x9000) // ignore always
{
}
else if (packet.Opcode == 0x2001)
{
if (context == remote_context) // ignore local to proxy only
{
context.RelaySecurity.Send(packet); // proxy to remote is handled by API
}
}
else if (packet.Opcode == 0xA102)
{
byte result = packet.ReadUInt8();
if (result == 1)
{
SessionID = packet.ReadUInt32();
string ip = packet.ReadAscii();
ushort port = packet.ReadUInt16();
var agentThread = new Thread(() => StartProxy(ip, ushort.Parse((port).ToString()), local_ip, local_port));
agentThread.Start();
Thread.Sleep(500);
//Fake response to redirect the client.
Packet new_packet = new Packet(0xA102, true);
new_packet.WriteUInt8(result);
new_packet.WriteUInt32(SessionID);
new_packet.WriteAscii(local_ip);
new_packet.WriteUInt16(local_port);
context.RelaySecurity.Send(new_packet);
}
else
{
context.RelaySecurity.Send(packet);
}
}
else if (packet.Opcode == 0x6103)
{
//If the client is sending 0x6103 agent auth packet, don't relay it
//because we send our own.
}
else
{
context.RelaySecurity.Send(packet);
}
}
}
}
#endregion
#region TransferOutgoing
foreach (Context context in contexts) // Network output event processing
{
if (context.Socket.Poll(0, SelectMode.SelectWrite))
{
List <KeyValuePair <TransferBuffer, Packet> > buffers = context.Security.TransferOutgoing();
if (buffers != null)
{
foreach (KeyValuePair <TransferBuffer, Packet> kvp in buffers)
{
TransferBuffer buffer = kvp.Key;
OnProxyClientPacketSent?.Invoke(kvp.Value);
//Save locale, username, password
if (kvp.Value.Opcode == 0x6102)
{
var p = new Packet(kvp.Value);
Locale = p.ReadUInt8();
Username = p.ReadAscii();
Password = p.ReadAscii();
}
//if the remote server signals switching to agent, send the auth packet.
else if (kvp.Value.Opcode == 0x2001)
{
if (kvp.Value.ReadAscii() == "AgentServer")
{
Packet p = new Packet(0x6103, true, false); //Login packet
p.WriteUInt32(SessionID); //Session ID we got from A102 Answer
p.WriteAscii(Username);
p.WriteAscii(Password);
p.WriteUInt8(Locale);
p.WriteUInt32(0); //Mac address
p.WriteUInt16(0); //Mac address
remote_context.Security.Send(p);
}
}
while (true)
{
int count = context.Socket.Send(buffer.Buffer, buffer.Offset, buffer.Size, SocketFlags.None);
buffer.Offset += count;
if (buffer.Offset == buffer.Size)
{
break;
}
Thread.Sleep(1);
}
}
}
}
}
#endregion
Thread.Sleep(1); // Cycle complete, prevent 100% CPU usage
}
}
}
}
static void Clientless_Start(Context context)
{
//Clientless started, start the ping thread.
var keepalive = new Thread(() => Clientless_Ping(context));
keepalive.Start();
try
{
while (true)
{
if (context.Socket.Poll(0, SelectMode.SelectRead))
{
int count = context.Socket.Receive(context.Buffer.Buffer);
if (count == 0)
{
Console.WriteLine("Null received, Disconnected!");
OnProxyDisconnect?.Invoke();
}
context.Security.Recv(context.Buffer.Buffer, 0, count);
}
List <Packet> packets = context.Security.TransferIncoming();
if (packets != null)
{
foreach (Packet packet in packets)
{
Dispatcher.Process(new Packet(packet));
OnProxyServerPacketReceive?.Invoke(packet);
if (packet.Opcode == 0x34B5) //Character teleport successfully
{
Packet answer = new Packet(0x34B6); //Teleport confirmation packet
context.Security.Send(answer);
}
}
}
if (context.Socket.Poll(0, SelectMode.SelectWrite))
{
List <KeyValuePair <TransferBuffer, Packet> > buffers = context.Security.TransferOutgoing();
if (buffers != null)
{
foreach (KeyValuePair <TransferBuffer, Packet> kvp in buffers)
{
TransferBuffer buffer = kvp.Key;
OnProxyClientPacketSent?.Invoke(kvp.Value);
while (true)
{
int count = context.Socket.Send(buffer.Buffer, buffer.Offset, buffer.Size, SocketFlags.None);
buffer.Offset += count;
if (buffer.Offset == buffer.Size)
{
break;
}
Thread.Sleep(1);
}
}
}
}
}
} catch
{
Console.WriteLine("Disconnected!");
OnProxyDisconnect?.Invoke();
}
}