From 4db29589a61f2e7cb663c5734f911c02206c7997 Mon Sep 17 00:00:00 2001
From: boris <wzn@moneybot.cc>
Date: Wed, 9 Jan 2019 20:51:16 +1300
Subject: whole buncha shit

FIXME: loader currently corrupts heap on injection because i am retarded
---
 csgo-loader/csgo-server/Server.cpp | 99 ++++++++++++++++++++++++++++++++++----
 1 file changed, 90 insertions(+), 9 deletions(-)

(limited to 'csgo-loader/csgo-server/Server.cpp')

diff --git a/csgo-loader/csgo-server/Server.cpp b/csgo-loader/csgo-server/Server.cpp
index f822753..e0f1455 100644
--- a/csgo-loader/csgo-server/Server.cpp
+++ b/csgo-loader/csgo-server/Server.cpp
@@ -1,15 +1,96 @@
 #include <Server.hpp>
 
-void ConnectionHandler(Networking::TCPConnection &Connection) {
-	Login::RemoteLoginServer LoginServer;
+// 'M1' -> cl request
+// 'M2' -> mod request
+// 'M3' -> ban request
 
-	ByteArray LoginHeader = Connection.ReceiveBytes();
-	
-	if(!LoginServer.Start(LoginHeader))
-		return;
+namespace Handler
+{
+	void OnClientConnection(Networking::TCPConnection &Connection)
+	{
+		printf("[ !! ] Client at %s requested connection!\n", Connection.GetIpAddress());
+
+		// Initialize login server for the client.
+		Login::RemoteLoginServer LoginServer;
+
+		ByteArray LoginHeader = Connection.ReceiveBytes();
+
+		// Invalid login header.
+		if(!LoginServer.Start(LoginHeader))
+			return;
+
+		printf("[ !! ] Received login header from %s!\n", Connection.GetIpAddress());
+
+		// Reply with server header.
+		ByteArray LoginReply = LoginServer.GetResponse();
+		Connection.SendBytes(LoginReply);
 
-	ByteArray LoginReply = LoginServer.GetResponse();
-	Connection.SendBytes(LoginReply);
+		ByteArray LoginReplyEcho = Connection.ReceiveBytes();
+
+		if(LoginReply.size() != LoginReplyEcho.size())
+		{
+			printf("[ !! ] Echo from %s invalid, dropping connection!", Connection.GetIpAddress());
+			return;
+		}
+
+		RemoteCode::FileReader File;
+
+		if(!File.Start("csgo-module.dll"))
+			return;
+
+		// Send them the loader module to inject the cheat.
+		printf("[ !! ] Sending latest loader module!\n");
+
+		ByteArray RawLdrModule;
+		RawLdrModule.insert(
+			RawLdrModule.begin(),
+			(uint8_t *)File,
+			(uint8_t *)(File + File.GetFileLength())
+		);
+
+		Connection.SendBytes(RawLdrModule);
+	}
+
+	void OnModuleConnection(Networking::TCPConnection &Connection)
+	{
+		// The output of this function will be verbose by default.
+		printf("[ !! ] Module hello from %s!\n", Connection.GetIpAddress());
+	}
+
+	void OnBanReqConnection(Networking::TCPConnection &Connection)
+	{
+		// Use for forum IP-ban purposes or whatever..
+		printf("[ !! ] Client at %s requested ban!\n", Connection.GetIpAddress());
+
+		// TODO: Ban user?
+	}
+
+	void OnReceiveConnection(Networking::TCPConnection &Connection)
+	{
+		ByteArray Header = Connection.ReceiveRawBytes();
+
+		if(Header.empty())
+		{
+			printf("[ !! ] Client at %s sent malformed request!\n", Connection.GetIpAddress());
+			return;
+		}
+
+		uint32_t HeaderCode = *(uint32_t *)&Header[0];
+
+		switch(HeaderCode)
+		{
+			case CLIENT_HEADER: // "MB1"
+				OnClientConnection(Connection); break;
+			case MODULE_HEADER: // "MB2"
+				OnModuleConnection(Connection); break;
+			case BANREQ_HEADER: // "MB3";
+				OnBanReqConnection(Connection); break;
+
+			// Drop any malformed clients.
+			default:
+				printf("[ !! ] Client at %s sent malformed request!\n", Connection.GetIpAddress());
+		}
+	}
 }
 
 int __stdcall WinMain(HINSTANCE, HINSTANCE, char*, int)
@@ -25,7 +106,7 @@ int __stdcall WinMain(HINSTANCE, HINSTANCE, char*, int)
 	if(Result)
 	{
 		// Attach our connection handler.
-		Server += ConnectionHandler;
+		Server += Handler::OnReceiveConnection;
 
 		// Accept any incoming connections.
 		for(;;)
-- 
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