From 2e25e066edf44093015065d48f6ad68b26a6332d Mon Sep 17 00:00:00 2001
From: jenz <unlozehq@gmail.com>
Date: Thu, 10 Mar 2022 00:19:05 +0100
Subject: [PATCH] initial commit of madness fix to rpt spam

---
 rptcrashfix/gamedata/rptexploitfix.css.txt | 15 ++++
 rptcrashfix/scripting/rptexploitfix.sp     | 88 ++++++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 rptcrashfix/gamedata/rptexploitfix.css.txt
 create mode 100644 rptcrashfix/scripting/rptexploitfix.sp

diff --git a/rptcrashfix/gamedata/rptexploitfix.css.txt b/rptcrashfix/gamedata/rptexploitfix.css.txt
new file mode 100644
index 00000000..2ee6192f
--- /dev/null
+++ b/rptcrashfix/gamedata/rptexploitfix.css.txt
@@ -0,0 +1,15 @@
+"Games"
+{
+	"cstrike"
+	{
+		"Signatures"
+		{
+			"CGameClient::ExecuteStringCommand()"
+			{
+				"library"		"engine"
+				"linux"			"@_ZN11CGameClient20ExecuteStringCommandEPKc"
+				"windows"		"\x55\x89\xE5\x81\xEC\x48\x05\x00\x00"
+			}
+		}
+	}
+}
\ No newline at end of file
diff --git a/rptcrashfix/scripting/rptexploitfix.sp b/rptcrashfix/scripting/rptexploitfix.sp
new file mode 100644
index 00000000..021da8f5
--- /dev/null
+++ b/rptcrashfix/scripting/rptexploitfix.sp
@@ -0,0 +1,88 @@
+#pragma semicolon 1
+
+#define PLUGIN_AUTHOR "null138"
+#define PLUGIN_VERSION "1.00"
+
+#include <sourcemod>
+#include <sdktools>
+#include <dhooks>
+// linux
+#define GetPlayerSlotOffs 3
+#pragma newdecls required
+Handle hExecuteStringCommand;
+Handle hGetPlayerSlot;
+
+public Plugin myinfo = 
+{
+	name = "RPT Exploit Fixer",
+	author = PLUGIN_AUTHOR,
+	description = "Fixes latest RPT server exploit",
+	version = PLUGIN_VERSION,
+	url = "https://steamcommunity.com/id/null138/"
+}
+
+public void OnPluginStart()
+{
+	Handle conf = LoadGameConfigFile("rptexploitfix.css");
+	if (conf == INVALID_HANDLE)
+		SetFailState("Failed to load gamedata rptexploitfix.css");
+	
+	hExecuteStringCommand = DHookCreateDetour(Address_Null, CallConv_THISCALL, ReturnType_Bool, ThisPointer_Address);
+	if (!hExecuteStringCommand)
+		SetFailState("Failed to setup detour for CGameClient::ExecuteStringCommand()");
+	
+	if (!DHookSetFromConf(hExecuteStringCommand, conf, SDKConf_Signature, "CGameClient::ExecuteStringCommand()"))
+		SetFailState("Failed to load CGameClient::ExecuteStringCommand() signature from gamedata");
+	
+	DHookAddParam(hExecuteStringCommand, HookParamType_CharPtr);
+	
+	if (!DHookEnableDetour(hExecuteStringCommand, false, ExecuteStringCommand))
+		SetFailState("Failed to detour CGameClient::ExecuteStringCommand()");
+
+	// And a post hook.
+	if (!DHookEnableDetour(hExecuteStringCommand, true, Detour_OnExecuteStringCommand_Post))
+		SetFailState("Failed to detour ExecuteStringCommand post.");
+
+	 // Setup quick hack to get the client index of the IClient this pointer in the detour callback.
+	StartPrepSDKCall(SDKCall_Raw);
+        PrepSDKCall_SetVirtual(GetPlayerSlotOffs);
+        PrepSDKCall_SetReturnInfo(SDKType_PlainOldData, SDKPass_Plain);
+        hGetPlayerSlot = EndPrepSDKCall();
+	delete conf;
+}
+
+
+public MRESReturn Detour_OnExecuteStringCommand_Post(Address pThis, Handle hReturn, Handle hParams)
+{
+    int client = SDKCall(hGetPlayerSlot, pThis) + 1;
+    char sBuffer[512];
+    DHookGetParamString(hParams, 1, sBuffer, sizeof(sBuffer));
+    if((sBuffer[0] == 'r' && sBuffer[1] == 'p' && sBuffer[2] == 't'))
+        {
+                if(IsClientInGame(client) && !IsClientSourceTV(client))
+		{
+			 LogMessage("client: %N wanted command pre: %s", client, sBuffer);
+			 KickClient(client, "DO NOT USE EXPLOITS ON THIS SERVER"); 
+		}
+        }
+
+}  
+
+
+public MRESReturn ExecuteStringCommand(Address addrThis, Handle hReturn, Handle hParams) 
+{
+	int client = SDKCall(hGetPlayerSlot, addrThis) + 1;
+	
+	char cmd[512];
+	DHookGetParamString(hParams, 1, cmd, 512);
+	// "rpt", "rpt_"
+	if((cmd[0] == 'r' && cmd[1] == 'p' && cmd[2] == 't'))
+	{
+		if(IsClientInGame(client) && !IsClientSourceTV(client)) 
+		{
+			LogMessage("client: %N wanted command pre: %s", client, cmd);
+			KickClient(client, "DO NOT USE EXPLOITS ON THIS SERVER");
+		}
+	}
+	return MRES_Ignored;
+}