From db0af63704a6fbc57e80a9db01bbc01b79339d9f Mon Sep 17 00:00:00 2001
From: Emma Miler <27428383+emma-miler@users.noreply.github.com>
Date: Mon, 7 Feb 2022 00:43:01 +0100
Subject: Added code for chathooks

This may not seem like much to a passing observer, but this commit took me 30 hours of blood, sweat, tears, IDA debugging, server crashes, and insanity.
---
 NorthstarDedicatedTest/serverauthentication.cpp | 91 +++++++++++++++++++++++--
 1 file changed, 86 insertions(+), 5 deletions(-)

diff --git a/NorthstarDedicatedTest/serverauthentication.cpp b/NorthstarDedicatedTest/serverauthentication.cpp
index 112db2a4..e0d4207e 100644
--- a/NorthstarDedicatedTest/serverauthentication.cpp
+++ b/NorthstarDedicatedTest/serverauthentication.cpp
@@ -13,6 +13,7 @@
 #include <filesystem>
 #include <thread>
 #include "configurables.h"
+#include "squirrel.h"
 
 const char* AUTHSERVER_VERIFY_STRING = "I am a northstar server!";
 
@@ -50,6 +51,7 @@ CServerGameDLL__OnRecievedSayTextMessageType CServerGameDLL__OnRecievedSayTextMe
 typedef void (*ConCommand__DispatchType)(ConCommand* command, const CCommand& args, void* a3);
 ConCommand__DispatchType ConCommand__Dispatch;
 
+
 // global vars
 ServerAuthenticationManager* g_ServerAuthenticationManager;
 
@@ -516,7 +518,32 @@ bool ProcessConnectionlessPacketHook(void* a1, netpacket_t* packet)
 	return ProcessConnectionlessPacket(a1, packet);
 }
 
-void CServerGameDLL__OnRecievedSayTextMessageHook(void* self, unsigned int senderClientIndex, const char* message, char unknown)
+void ReplaceStringInPlace(std::string& subject, const std::string& search, const std::string& replace)
+{
+	size_t pos = 0;
+	while ((pos = subject.find(search, pos)) != std::string::npos)
+	{
+		subject.replace(pos, search.length(), replace);
+		pos += replace.length();
+	}
+}
+
+std::string currentMessage;
+int currentPlayerId;
+int currentChannelId;
+bool shouldBlock;
+bool isProcessed = true;
+
+SQRESULT setMessage(void* sqvm)
+{
+	currentMessage = ServerSq_getstring(sqvm, 1);
+	currentPlayerId = ServerSq_getinteger(sqvm, 2);
+	currentChannelId = ServerSq_getinteger(sqvm, 3);
+	shouldBlock = ServerSq_getbool(sqvm, 4);
+	return SQRESULT_NOTNULL;
+}
+
+void CServerGameDLL__OnRecievedSayTextMessageHook(void* self, unsigned int senderClientIndex, const char* message, int channelId)
 {
 	void* sender = GetPlayerByIndex(senderClientIndex - 1); // senderClientIndex starts at 1
 
@@ -532,10 +559,26 @@ void CServerGameDLL__OnRecievedSayTextMessageHook(void* self, unsigned int sende
 
 	g_ServerAuthenticationManager->m_additionalPlayerData[sender].sayTextLimitCount++;
 
-	// todo: could censor messages here if we have a banned word list, we do not currently have one of these
-	// could possibly make this call a script codecallback, or smth
+	bool shouldDoChathooks = strstr(GetCommandLineA(), "-enableChatHooks");
+	if (shouldDoChathooks)
+	{
+
+		currentMessage = message;
+		currentPlayerId = senderClientIndex - 1; // Stupid fix cause of index offsets
+		currentChannelId = channelId;
+		shouldBlock = false;
+		isProcessed = false;
 
-	CServerGameDLL__OnRecievedSayTextMessage(self, senderClientIndex, message, unknown);
+		g_ServerSquirrelManager->ExecuteCode("CServerGameDLL_ProcessMessageStartThread()");
+		if (!shouldBlock && currentPlayerId + 1 == senderClientIndex) // stop player id spoofing from server
+		{
+			CServerGameDLL__OnRecievedSayTextMessage(self, currentPlayerId + 1, currentMessage.c_str(), currentChannelId);
+		}
+	}
+	else
+	{
+		CServerGameDLL__OnRecievedSayTextMessage(self, senderClientIndex, message, channelId);
+	}
 }
 
 void ResetPdataCommand(const CCommand& args)
@@ -642,10 +685,48 @@ void InitialiseServerAuthentication(HMODULE baseAddress)
 	}
 }
 
+SQRESULT getMessageServer(void* sqvm)
+{
+	ServerSq_pushstring(sqvm, currentMessage.c_str(), -1);
+	return SQRESULT_NOTNULL;
+}
+SQRESULT getPlayerServer(void* sqvm)
+{
+	ServerSq_pushinteger(sqvm, currentPlayerId);
+	return SQRESULT_NOTNULL;
+}
+SQRESULT getChannelServer(void* sqvm)
+{
+	ServerSq_pushinteger(sqvm, currentChannelId);
+	return SQRESULT_NOTNULL;
+}
+SQRESULT getShouldProcessMessage(void* sqvm)
+{
+	ServerSq_pushbool(sqvm, !isProcessed);
+	return SQRESULT_NOTNULL;
+}
+SQRESULT pushMessage(void* sqvm)
+{
+	currentMessage = ServerSq_getstring(sqvm, 1);
+	currentPlayerId = ServerSq_getinteger(sqvm, 2);
+	currentChannelId = ServerSq_getinteger(sqvm, 3);
+	shouldBlock = ServerSq_getbool(sqvm, 4);
+	isProcessed = true;
+	return SQRESULT_NOTNULL;
+}
+
 void InitialiseServerAuthenticationServerDLL(HMODULE baseAddress)
 {
 	HookEnabler hook;
 	ENABLER_CREATEHOOK(
 		hook, (char*)baseAddress + 0x1595C0, &CServerGameDLL__OnRecievedSayTextMessageHook,
 		reinterpret_cast<LPVOID*>(&CServerGameDLL__OnRecievedSayTextMessage));
-}
\ No newline at end of file
+
+	g_ServerSquirrelManager->AddFuncRegistration("void", "NSSetMessage", "string message, int playerId, int channelId, bool shouldBlock", "", setMessage);
+
+	g_ServerSquirrelManager->AddFuncRegistration("string", "NSChatGetCurrentMessage", "", "", getMessageServer);
+	g_ServerSquirrelManager->AddFuncRegistration("int", "NSChatGetCurrentPlayer", "", "", getPlayerServer);
+	g_ServerSquirrelManager->AddFuncRegistration("int", "NSChatGetCurrentChannel", "", "", getChannelServer);
+	g_ServerSquirrelManager->AddFuncRegistration("bool", "NSShouldProcessMessage", "", "", getShouldProcessMessage);
+	g_ServerSquirrelManager->AddFuncRegistration("void", "NSPushMessage", "string message, int playerId, int channelId, bool shouldBlock", "", pushMessage);
+}
-- 
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