From d1f88e08191383bb6bd7f0f0e3877379da3cd921 Mon Sep 17 00:00:00 2001
From: xen <xen@xen.xen>
Date: Sat, 22 Feb 2025 18:50:50 +0200
Subject: [PATCH] Update sig+patch but disable them

It's really cursed and I don't wanna deal with that for now, we can make do without the ONE plugin that needs it
---
 extension.cpp | 48 +++++++++++++++++++++++++++++++-----------------
 1 file changed, 31 insertions(+), 17 deletions(-)

diff --git a/extension.cpp b/extension.cpp
index e3f0a3e..89e77f4 100644
--- a/extension.cpp
+++ b/extension.cpp
@@ -68,8 +68,8 @@ struct SrcdsPatch
 #if SOURCE_ENGINE == SE_CSS && defined PLATFORM_LINUX
 	{
 		"Physics_RunThinkFunctions",
-		(unsigned char *)"\x8B\x04\x9E\x85\xC0\x74\x13\xA1\x00\x00\x00\x00\x89\x78\x0C\x8B\x04\x9E\x89\x04\x24\xE8\x00\x00\x00\x00",
-		"xxxxxxxx????xxxxxxxxxx????",
+		(unsigned char *)"\x8B\x14\x9E\x85\xD2\x74\x00\xA1\x00\x00\x00\x00\x83\xEC\x00\xF3\x0F\x10\x55\x00\xF3\x0F\x11\x50\x00\xFF",
+		"xxxxxx?x????xx?xxxx?xxxx?x",
 		NULL,
 		0, 0, 0, false
 	}
@@ -153,7 +153,7 @@ void (__fastcall *g_pPhysics_SimulateEntity)(CBaseEntity *pEntity) = NULL;
 
 void Physics_SimulateEntity_CustomLoop(CBaseEntity **ppList, int Count, float Startime)
 {
-	CBaseEntity *apPlayers[g_iMaxPlayers];
+	CUtlVectorFixed<CBaseEntity*, 64> apPlayers;
 	int iPlayers = 0;
 
 	// Remove players from list and put into apPlayers
@@ -497,19 +497,22 @@ bool PhysHooks::SDK_OnLoad(char *error, size_t maxlength, bool late)
 	}
 
 #if SOURCE_ENGINE == SE_CSS && defined PLATFORM_LINUX
-	// mov [esp+8], edi ; startime
-	// mov [esp+4], eax ; count
-	// mov [esp], esi ; **list
+	// sub esp, 4 ; allocate room on stack for starttime
+	// movss [esp], xmm2 ; startime
+	// push eax ; count
+	// push esi ; **list
 	// call NULL ; <- our func here
-	// jmp +16 ; jump over useless instructions
-	static unsigned char aPatch[] = "\x89\x7C\x24\x08\x89\x44\x24\x04\x89\x34\x24\xE8\x00\x00\x00\x00\xEB\x10\x90\x90\x90\x90\x90\x90\x90\x90";
+	// add esp, 12 ; fix up stack
+	// jmp +24 ; jump over useless instructions
+								  //"\x8B\x14\x9E\x85\xD2\x74\x00\xA1\x00\x00\x00\x00\x83\xEC\x00\xF3\x0F\x10\x55\x00\xF3\x0F\x11\x50\x00\xFF"
+	static unsigned char aPatch[] = "\x83\xEC\x04\xF3\x0F\x11\x14\x24\x50\x56\xE8\x00\x00\x00\x00\x83\xC4\x0C\xEB\x18\x90\x90\x90\x90\x90\x90";
 	gs_Patches[0].pPatch = aPatch;
 
 	// put our function address into the relative call instruction
 	// relative call: new PC = PC + imm1
-	// call is at + 11 after pPatchAddress
+	// call is at + 10 after pPatchAddress
 	// PC will be past our call instruction so + 5
-	*(uintptr_t *)&aPatch[12] = (uintptr_t)Physics_SimulateEntity_CustomLoop - (pPatchAddress + 11 + 5);
+	*(uintptr_t *)&aPatch[11] = (uintptr_t)Physics_SimulateEntity_CustomLoop - (pPatchAddress + 10 + 5);
 #elif SOURCE_ENGINE == SE_CSGO && defined PLATFORM_LINUX
 	// mov [esp+8], edi ; startime
 	// mov [esp+4], eax ; count
@@ -545,6 +548,10 @@ bool PhysHooks::SDK_OnLoad(char *error, size_t maxlength, bool late)
 #error "Unsupported platform"
 #endif
 
+	bool bSuccess = true;
+
+	// TODO: Fix this cursed patch 
+	/*
 	// Apply all patches
 	for(size_t i = 0; i < sizeof(gs_Patches) / sizeof(*gs_Patches); i++)
 	{
@@ -553,17 +560,17 @@ bool PhysHooks::SDK_OnLoad(char *error, size_t maxlength, bool late)
 
 		if(!g_pGameConf->GetMemSig(pPatch->pSignature, (void **)&pPatch->pAddress) || !pPatch->pAddress)
 		{
-			snprintf(error, maxlength, "Could not find symbol: %s", pPatch->pSignature);
-			SDK_OnUnload();
-			return false;
+			g_pSM->LogError(myself, "Could not find symbol: %s", pPatch->pSignature);
+			bSuccess = false;
+			continue;
 		}
 
 		pPatch->pPatchAddress = FindPattern(pPatch->pAddress, pPatch->pPatchSignature, pPatch->pPatchPattern, 1024);
 		if(!pPatch->pPatchAddress)
 		{
-			snprintf(error, maxlength, "Could not find patch signature for symbol: %s", pPatch->pSignature);
-			SDK_OnUnload();
-			return false;
+			g_pSM->LogError(myself, "Could not find patch signature for symbol: %s", pPatch->pSignature);
+			bSuccess = false;
+			continue;
 		}
 
 		pPatch->pOriginal = (unsigned char *)malloc(PatchLen * sizeof(unsigned char));
@@ -576,10 +583,17 @@ bool PhysHooks::SDK_OnLoad(char *error, size_t maxlength, bool late)
 		}
 		SourceHook::SetMemAccess((void *)pPatch->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_EXEC);
 	}
+	*/
+
+	if (!bSuccess)
+	{
+		SDK_OnUnload();
+		return false;
+	}
 
 	g_pOnRunThinkFunctions = forwards->CreateForward("OnRunThinkFunctions", ET_Ignore, 1, NULL, Param_Cell);
 	g_pOnPrePlayerThinkFunctions = forwards->CreateForward("OnPrePlayerThinkFunctions", ET_Ignore, 0, NULL);
-	g_pOnPostPlayerThinkFunctions = forwards->CreateForward("OnPostPlayerThinkFunctions", ET_Ignore, 0, NULL);
+	g_pOnPostPlayerThinkFunctions = forwards->CreateForward("OnPostPlayerThinkFunctions", ET_Ignore, 0, NULL); // NOTE: This relies on the cursed patch above
 	g_pOnRunThinkFunctionsPost = forwards->CreateForward("OnRunThinkFunctionsPost", ET_Ignore, 1, NULL, Param_Cell);
 
 	return true;