fixes/update from xen

add new function call scanning/patching feature + multiple signature patching

AMBuildScript

@@ -158,7 +158,7 @@ class ExtensionConfig(object):
       '-fvisibility=hidden',
     ]
     cxx.cxxflags += [
-      '-std=c++11',
+      '-std=c++14',
       '-fno-exceptions',
       '-fno-threadsafe-statics',
       '-Wno-non-virtual-dtor',
@@ -246,6 +246,7 @@ class ExtensionConfig(object):
       cxx.linkflags += ['-static-libgcc']
     elif cxx.vendor == 'clang':
       cxx.linkflags += ['-lgcc_eh']
+    cxx.linkflags += ['-static-libstdc++']
 
   def configure_mac(self, cxx):
     cxx.defines += ['OSX', '_OSX', 'POSIX']

extension.cpp

@@ -37,6 +37,8 @@
 #include <IEngineTrace.h>
 #include <server_class.h>
 #include <ispatialpartition.h>
+#include <utlvector.h>
+#include <string_t.h>
 
 #define SetBit(A,I)		((A)[(I) >> 5] |= (1 << ((I) & 31)))
 #define ClearBit(A,I)	((A)[(I) >> 5] &= ~(1 << ((I) & 31)))
@@ -74,6 +76,38 @@ bool UTIL_ContainsDataTable(SendTable *pTable, const char *name)
 	return false;
 }
 
+void UTIL_StringToVector( float *pVector, const char *pString )
+{
+	char *pstr, *pfront, tempString[128];
+	int	j;
+
+	Q_strncpy( tempString, pString, sizeof(tempString) );
+	pstr = pfront = tempString;
+
+	for ( j = 0; j < 3; j++ )			// lifted from pr_edict.c
+	{
+		pVector[j] = atof( pfront );
+
+		// skip any leading whitespace
+		while ( *pstr && *pstr <= ' ' )
+			pstr++;
+
+		// skip to next whitespace
+		while ( *pstr && *pstr > ' ' )
+			pstr++;
+
+		if (!*pstr)
+			break;
+
+		pstr++;
+		pfront = pstr;
+	}
+	for ( j++; j < 3; j++ )
+	{
+		pVector[j] = 0;
+	}
+}
+
 class CTraceFilterSimple : public CTraceFilter
 {
 public:
@@ -91,15 +125,26 @@ public:
 
 static struct SrcdsPatch
 {
-	const char *pSignature;
-	const unsigned char *pPatchSignature;
-	const char *pPatchPattern;
-	const unsigned char *pPatch;
+	const char *pSignature; // function symbol
+	const unsigned char *pPatchSignature; // original opcode signature | function symbol for functionCall = true
+	const char *pPatchPattern; // pattern = x/?, ? = ignore signature
+	const unsigned char *pPatch; // replace with bytes
+	const char *pLibrary; // library of function symbol pSignature
 
-	unsigned char *pOriginal;
-	uintptr_t pAddress;
-	uintptr_t pPatchAddress;
-	bool engine;
+	int range = 0x400; // search range: scan up to this many bytes for the signature
+	int occurrences = 1; // maximum(!) number of occurences to patch
+	bool functionCall = false; // true = FindFunctionCall (pPatchSignature = function symbol) | false = FindPattern
+	const char *pFunctionLibrary = ""; // library of function symbol pPatchSignature for functionCall = true
+
+	struct Restore
+	{
+		unsigned char *pOriginal = NULL;
+		uintptr_t pPatchAddress = 0;
+		struct Restore *pNext = NULL;
+	} *pRestore = NULL;
+
+	uintptr_t pAddress = 0;
+	uintptr_t pSignatureAddress = 0;
 } gs_Patches[] = {
 	// 0: game_ui should not apply FL_ONTRAIN flag, else client prediction turns off
 	{
@@ -107,23 +152,23 @@ static struct SrcdsPatch
 		(unsigned char *)"\xC7\x44\x24\x04\x10\x00\x00\x00\x89\x34\x24\xE8\x00\x00\x00\x00",
 		"xxxxxxxxxxxx????",
 		(unsigned char *)"\xC7\x44\x24\x04\x10\x00\x00\x00\x89\x34\x24\x90\x90\x90\x90\x90",
-		0, 0, 0, false
+		"cstrike/bin/server_srv.so"
 	},
 	// 1: player_speedmod should not turn off flashlight
 	{
 		"_ZN17CMovementSpeedMod13InputSpeedModER11inputdata_t",
-		(unsigned char *)"\xFF\x90\x8C\x05\x00\x00\x85\xC0\x0F\x85\x75\x02\x00\x00",
+		(unsigned char *)"\xFF\x90\x8C\x05\x00\x00\x85\xC0\x0F\x85\x85\x02\x00\x00",
 		"xxxxxxxxxxxxxx",
 		(unsigned char *)"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90",
-		0, 0, 0, false
+		"cstrike/bin/server_srv.so"
 	},
 	// 2: only select CT spawnpoints
 	{
 		"_ZN9CCSPlayer19EntSelectSpawnPointEv",
-		(unsigned char *)"\x89\x1C\x24\xE8\x00\x00\x00\x00\x83\xF8\x03\x74\x4B",
+		(unsigned char *)"\x89\x1C\x24\xE8\x00\x00\x00\x00\x83\xF8\x03\x74\x6B",
 		"xxxx????xxxxx",
-		(unsigned char *)"\x89\x1C\x24\x90\x90\x90\x90\x90\x90\x90\x90\xEB\x4B",
-		0, 0, 0, false
+		(unsigned char *)"\x89\x1C\x24\x90\x90\x90\x90\x90\x90\x90\x90\xEB\x6B",
+		"cstrike/bin/server_srv.so"
 	},
 	// 3: don't check if we have T spawns
 	{
@@ -131,7 +176,7 @@ static struct SrcdsPatch
 		(unsigned char *)"\x74\x0E\x8B\x83\x80\x02\x00\x00\x85\xC0\x0F\x85\x9E\x00\x00\x00\xC7\x04\x24\xAC\xF7\x87\x00\xE8\xC2\x82\x91\x00",
 		"xxxxxxxxxxxxxxxx????????????",
 		(unsigned char *)"\x0F\x85\xA8\x00\x00\x00\x8B\x83\x80\x02\x00\x00\x85\xC0\x0F\x85\x9A\x00\x00\x00\x90\x90\x90\x90\x90\x90\x90\x90",
-		0, 0, 0, false
+		"cstrike/bin/server_srv.so"
 	},
 	// 5: disable alive check in point_viewcontrol->Disable
 	{
@@ -139,23 +184,24 @@ static struct SrcdsPatch
 		(unsigned char *)"\x8B\x10\x89\x04\x24\xFF\x92\x08\x01\x00\x00\x84\xC0\x0F\x84\x58\xFF\xFF\xFF",
 		"xxxxxxx??xxxxxx?xxx",
 		(unsigned char *)"\x8B\x10\x89\x04\x24\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90",
-		0, 0, 0, false
+		"cstrike/bin/server_srv.so"
 	},
 	// 6: disable player->m_takedamage = DAMAGE_NO in point_viewcontrol->Enable
 	{
 		"_ZN14CTriggerCamera6EnableEv",
-		(unsigned char *)"\x31\xFF\x80\xBF\xFD\x00\x00\x00\x00\x0F\x85\x96\x03\x00\x00",
-		"xxxx?xxxxxx??xx",
-		(unsigned char *)"\x31\xFF\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90",
-		0, 0, 0, false
+		(unsigned char *)"\xC6\x86\x00\x00\x00\x00\x00\x8B\x83\x00\x00\x00\x00\xA8\x20",
+		"xx?????xx????xx",
+		(unsigned char *)"\x90\x90\x90\x90\x90\x90\x90\x8B\x83\x00\x00\x00\x00\xA8\x20",
+		"cstrike/bin/server_srv.so",
+		0x600
 	},
 	// 7: disable player->m_takedamage = m_nOldTakeDamage in point_viewcontrol->Disable
 	{
 		"_ZN14CTriggerCamera7DisableEv",
-		(unsigned char *)"\x89\xF9\x38\x8E\xFD\x00\x00\x00\x0F\x84\xAC\xFD\xFF\xFF",
+		(unsigned char *)"\x89\xF9\x38\x8E\xFD\x00\x00\x00\x0F\x84\xCA\xFD\xFF\xFF",
 		"xxxx?xxxxxxxxx",
-		(unsigned char *)"\x89\xF9\x38\x8E\xFD\x00\x00\x00\x90\xE9\xAC\xFD\xFF\xFF",
-		0, 0, 0, false
+		(unsigned char *)"\x89\xF9\x38\x8E\xFD\x00\x00\x00\x90\xE9\xCA\xFD\xFF\xFF",
+		"cstrike/bin/server_srv.so"
 	},
 	// 8: userinfo stringtable don't write fakeclient field
 	{
@@ -163,8 +209,28 @@ static struct SrcdsPatch
 		(unsigned char *)"\xFF\x50\x70\x88\x46\x6C",
 		"xxxxxx",
 		(unsigned char *)"\x90\x90\x90\x90\x90\x90",
-		0, 0, 0, true
-	}
+		"bin/engine_srv.so"
+	},
+	// 9: fix server lagging resulting from too many ConMsgs due to packet spam
+	{
+		"_ZN8CNetChan19ProcessPacketHeaderEP11netpacket_s",
+		(unsigned char *)"_Z6ConMsgPKcz",
+		"xxxxx",
+		(unsigned char *)"\x90\x90\x90\x90\x90",
+		"bin/engine_srv.so",
+		0x7d1, 100,
+		true, "bin/libtier0_srv.so"
+	},
+	// 10: fix server lagging resulting from too many ConMsgs due to packet spam
+	{
+		"_Z11NET_GetLongiP11netpacket_s",
+		(unsigned char *)"Msg",
+		"xxxxx",
+		(unsigned char *)"\x90\x90\x90\x90\x90",
+		"bin/engine_srv.so",
+		0x800, 100,
+		true, "bin/libtier0_srv.so"
+	},
 };
 
 class CBaseEntity;
@@ -173,6 +239,13 @@ struct variant_hax
 	const char *pszValue;
 };
 
+struct ResponseContext_t
+{
+	string_t m_iszName;
+	string_t m_iszValue;
+	float m_fExpirationTime;
+};
+
 struct inputdata_t
 {
 	// The entity that initially caused this chain of output events.
@@ -202,6 +275,8 @@ IGameConfig *g_pGameConf = NULL;
 
 CDetour *g_pDetour_InputTestActivator = NULL;
 CDetour *g_pDetour_PostConstructor = NULL;
+CDetour *g_pDetour_CreateEntityByName = NULL;
+CDetour *g_pDetour_PassesFilterImpl = NULL;
 CDetour *g_pDetour_FindUseEntity = NULL;
 CDetour *g_pDetour_CTraceFilterSimple = NULL;
 CDetour *g_pDetour_KeyValue = NULL;
@@ -210,6 +285,8 @@ CDetour *g_pDetour_SwingOrStab = NULL;
 int g_SH_SkipTwoEntitiesShouldHitEntity = 0;
 int g_SH_SimpleShouldHitEntity = 0;
 
+int g_iMaxPlayers = 0;
+
 uintptr_t g_CTraceFilterNoNPCsOrPlayer = 0;
 CTraceFilterSkipTwoEntities *g_CTraceFilterSkipTwoEntities = NULL;
 CTraceFilterSimple *g_CTraceFilterSimple = NULL;
@@ -223,32 +300,122 @@ DETOUR_DECL_MEMBER1(DETOUR_InputTestActivator, void, inputdata_t *, inputdata)
 	DETOUR_MEMBER_CALL(DETOUR_InputTestActivator)(inputdata);
 }
 
+const char *pszNonEdicts[] =
+{
+	"ambient_generic",
+	"game_score",
+	"game_text",
+	"game_ui",
+	"logic_auto",	// bruh
+	"phys_thruster",
+	"phys_keepupright",
+	"player_speedmod",
+	"player_weaponstrip",
+	"point_clientcommand",
+	"point_servercommand",
+	"point_teleport",
+};
+
 DETOUR_DECL_MEMBER1(DETOUR_PostConstructor, void, const char *, szClassname)
 {
+	CBaseEntity *pEntity = (CBaseEntity *)this;
+
+	static datamap_t *pMap = gamehelpers->GetDataMap(pEntity);
+	static typedescription_t *td = gamehelpers->FindInDataMap(pMap, "m_iEFlags");
+	static uint32 offset = td->fieldOffset[TD_OFFSET_NORMAL];
+
 	if(strncasecmp(szClassname, "info_player_", 12) == 0)
 	{
-		CBaseEntity *pEntity = (CBaseEntity *)this;
-
-		datamap_t *pMap = gamehelpers->GetDataMap(pEntity);
-		typedescription_t *td = gamehelpers->FindInDataMap(pMap, "m_iEFlags");
-
 		// Spawnpoints don't need edicts...
-		*(uint32 *)((intptr_t)pEntity + td->fieldOffset[TD_OFFSET_NORMAL]) |= (1<<9); // EFL_SERVER_ONLY
+		*(uint32 *)((intptr_t)pEntity + offset) |= (1<<9); // EFL_SERVER_ONLY
 
 		// Only CT spawnpoints
 		if(strcasecmp(szClassname, "info_player_terrorist") == 0)
 			szClassname = "info_player_counterterrorist";
+
+		DETOUR_MEMBER_CALL(DETOUR_PostConstructor)(szClassname);
+		return;
+	}
+
+	// Remove edicts for a bunch of entities that REALLY don't need them
+	for (int i = 0; i < sizeof(pszNonEdicts)/sizeof(*pszNonEdicts); i++)
+	{
+		if (!strcasecmp(szClassname, pszNonEdicts[i]))
+		{
+			*(uint32 *)((intptr_t)pEntity + offset) |= (1<<9); // EFL_SERVER_ONLY
+		}
 	}
 
 	DETOUR_MEMBER_CALL(DETOUR_PostConstructor)(szClassname);
 }
 
+// Implementation for custom filter entities
+DETOUR_DECL_MEMBER2(DETOUR_PassesFilterImpl, bool, CBaseEntity*, pCaller, CBaseEntity*, pEntity)
+{
+	CBaseEntity* pThisEnt = (CBaseEntity*)this;
+
+	// filter_activator_context: filters activators based on whether they have a given context with a nonzero value
+	// https://developer.valvesoftware.com/wiki/Filter_activator_context
+	// Implemented here because CUtlVectors are not supported in sourcepawn
+	if (!strcasecmp(gamehelpers->GetEntityClassname(pThisEnt), "filter_activator_context"))
+	{
+		static int m_ResponseContexts_offset = 0, m_iszResponseContext_offset = 0;
+
+		if (!m_ResponseContexts_offset && !m_iszResponseContext_offset)
+		{
+			datamap_t *pDataMap = gamehelpers->GetDataMap(pEntity);
+			sm_datatable_info_t info;
+
+			// Both are CBaseEntity members, so the offsets will always be the same across different entity classes
+			gamehelpers->FindDataMapInfo(pDataMap, "m_ResponseContexts", &info);
+			m_ResponseContexts_offset = info.actual_offset;
+
+			gamehelpers->FindDataMapInfo(pDataMap, "m_iszResponseContext", &info);
+			m_iszResponseContext_offset = info.actual_offset;
+		}
+
+		CUtlVector<ResponseContext_t> vecResponseContexts;
+		vecResponseContexts = *(CUtlVector<ResponseContext_t>*)((uint8_t*)pEntity + m_ResponseContexts_offset);
+
+		const char *szFilterContext = (*(string_t*)((uint8_t*)pThisEnt + m_iszResponseContext_offset)).ToCStr();
+		const char *szContext;
+		int iContextValue;
+
+		for (int i = 0; i < vecResponseContexts.Count(); i++)
+		{
+			szContext = vecResponseContexts[i].m_iszName.ToCStr();
+			iContextValue = atoi(vecResponseContexts[i].m_iszValue.ToCStr());
+
+			if (!strcasecmp(szFilterContext, szContext) && iContextValue > 0)
+				return true;
+		}
+
+		return false;
+	}
+
+	// CBaseFilter::PassesFilterImpl just returns true so no need to call it
+	return true;
+}
+
+// Switch new entity classnames to ones that can be instantiated while keeping the classname keyvalue intact so it can be used later
+DETOUR_DECL_STATIC2(DETOUR_CreateEntityByName, CBaseEntity*, const char*, className, int, iForceEdictIndex)
+{
+	// Nice of valve to expose CBaseFilter as filter_base :)
+	if (strcasecmp(className, "filter_activator_context") == 0)
+		className = "filter_base";
+
+	return DETOUR_STATIC_CALL(DETOUR_CreateEntityByName)(className, iForceEdictIndex);
+}
+
 DETOUR_DECL_MEMBER2(DETOUR_KeyValue, bool, const char *, szKeyName, const char *, szValue)
 {
+    CBaseEntity *pEntity = (CBaseEntity *)this;
+
 	// Fix crash bug in engine
 	if(strcasecmp(szKeyName, "angle") == 0)
+	{
 		szKeyName = "angles";
-
+	}
 	else if(strcasecmp(szKeyName, "classname") == 0 &&
 		strcasecmp(szValue, "info_player_terrorist") == 0)
 	{
@@ -257,13 +424,31 @@ DETOUR_DECL_MEMBER2(DETOUR_KeyValue, bool, const char *, szKeyName, const char *
 	}
 	else if(strcasecmp(szKeyName, "teamnum") == 0 || strcasecmp(szKeyName, "teamnum") == 0 )
 	{
-		CBaseEntity *pEntity = (CBaseEntity *)this;
 		const char *pClassname = gamehelpers->GetEntityClassname(pEntity);
 
 		// All buyzones should be CT buyzones
 		if(pClassname && strcasecmp(pClassname, "func_buyzone") == 0)
 			szValue = "3";
 	}
+    else if(strcasecmp(szKeyName, "absvelocity") == 0)
+    {
+        static int m_AbsVelocity_offset = 0;
+
+		if (!m_AbsVelocity_offset)
+		{
+			datamap_t *pDataMap = gamehelpers->GetDataMap(pEntity);
+			sm_datatable_info_t info;
+
+			gamehelpers->FindDataMapInfo(pDataMap, "m_vecAbsVelocity", &info);
+			m_AbsVelocity_offset = info.actual_offset;
+		}
+
+		float tmp[3];
+		UTIL_StringToVector(tmp, szValue);
+
+		Vector *vecAbsVelocity = (Vector*)((uint8_t*)pEntity + m_AbsVelocity_offset);
+		vecAbsVelocity->Init(tmp[0], tmp[1], tmp[2]);
+    }
 
 	return DETOUR_MEMBER_CALL(DETOUR_KeyValue)(szKeyName, szValue);
 }
@@ -307,7 +492,7 @@ bool ShouldHitEntity(IHandleEntity *pHandleEntity, int contentsMask)
 
 	int iTeam = 0;
 
-	if(index > SM_MAXPLAYERS && g_pPhysboxToClientMap && index < 2048)
+	if(index > g_iMaxPlayers && g_pPhysboxToClientMap && index < 2048)
 	{
 		index = g_pPhysboxToClientMap[index];
 	}
@@ -316,11 +501,12 @@ bool ShouldHitEntity(IHandleEntity *pHandleEntity, int contentsMask)
 	{
 		iTeam = -index;
 	}
-	else if(index < 1 || index > SM_MAXPLAYERS)
+	else if(index < 1 || index > g_iMaxPlayers)
 	{
 		RETURN_META_VALUE(MRES_IGNORED, true);
 	}
 
+	char lifeState = 0;
 	if(!iTeam)
 	{
 		IGamePlayer *pPlayer = playerhelpers->GetGamePlayer(index);
@@ -332,9 +518,21 @@ bool ShouldHitEntity(IHandleEntity *pHandleEntity, int contentsMask)
 			RETURN_META_VALUE(MRES_IGNORED, true);
 
 		iTeam = pInfo->GetTeamIndex();
+
+		static int offset = 0;
+		if(!offset)
+		{
+			sm_sendprop_info_t spi;
+			if (!gamehelpers->FindSendPropInfo("CBasePlayer", "m_lifeState", &spi))
+				RETURN_META_VALUE(MRES_IGNORED, true);
+
+			offset = spi.actual_offset;
+		}
+
+		lifeState = *(char *)((uint8_t *)pHandleEntity + offset);
 	}
 
-	if(iTeam == g_FireBulletPlayerTeam)
+	if(iTeam == g_FireBulletPlayerTeam || lifeState != 0)
 		RETURN_META_VALUE(MRES_SUPERCEDE, false);
 
 	RETURN_META_VALUE(MRES_IGNORED, true);
@@ -415,6 +613,8 @@ bool CSSFixes::SDK_OnLoad(char *error, size_t maxlength, bool late)
 {
 	srand((unsigned int)time(NULL));
 
+    g_iMaxPlayers = playerhelpers->GetMaxClients();
+
 	char conf_error[255] = "";
 	if(!gameconfs->LoadGameConfigFile("CSSFixes", &g_pGameConf, conf_error, sizeof(conf_error)))
 	{
@@ -442,6 +642,22 @@ bool CSSFixes::SDK_OnLoad(char *error, size_t maxlength, bool late)
 		return false;
 	}
 
+	g_pDetour_CreateEntityByName = DETOUR_CREATE_STATIC(DETOUR_CreateEntityByName, "CreateEntityByName");
+	if (g_pDetour_CreateEntityByName == NULL)
+	{
+		snprintf(error, maxlength, "Could not create detour for CreateEntityByName");
+		SDK_OnUnload();
+		return false;
+	}
+
+	g_pDetour_PassesFilterImpl = DETOUR_CREATE_MEMBER(DETOUR_PassesFilterImpl, "CBaseFilter_PassesFilterImpl");
+	if (g_pDetour_PassesFilterImpl == NULL)
+	{
+		snprintf(error, maxlength, "Could not create detour for CBaseFilter_PassesFilterImpl");
+		SDK_OnUnload();
+		return false;
+	}
+
 	g_pDetour_FindUseEntity = DETOUR_CREATE_MEMBER(DETOUR_FindUseEntity, "CBasePlayer_FindUseEntity");
 	if(g_pDetour_FindUseEntity == NULL)
 	{
@@ -484,6 +700,8 @@ bool CSSFixes::SDK_OnLoad(char *error, size_t maxlength, bool late)
 
 	g_pDetour_InputTestActivator->EnableDetour();
 	g_pDetour_PostConstructor->EnableDetour();
+	g_pDetour_CreateEntityByName->EnableDetour();
+	g_pDetour_PassesFilterImpl->EnableDetour();
 	g_pDetour_FindUseEntity->EnableDetour();
 	g_pDetour_CTraceFilterSimple->EnableDetour();
 	g_pDetour_KeyValue->EnableDetour();
@@ -526,63 +744,92 @@ bool CSSFixes::SDK_OnLoad(char *error, size_t maxlength, bool late)
 	g_SH_SkipTwoEntitiesShouldHitEntity = SH_ADD_DVPHOOK(CTraceFilterSkipTwoEntities, ShouldHitEntity, g_CTraceFilterSkipTwoEntities, SH_STATIC(ShouldHitEntity), true);
 	g_SH_SimpleShouldHitEntity = SH_ADD_DVPHOOK(CTraceFilterSimple, ShouldHitEntity, g_CTraceFilterSimple, SH_STATIC(ShouldHitEntity), true);
 
-	void *pServerSo = dlopen("cstrike/bin/server_srv.so", RTLD_NOW);
-	if(!pServerSo)
-	{
-		snprintf(error, maxlength, "Could not dlopen server_srv.so");
-		SDK_OnUnload();
-		return false;
-	}
-
-	void *pEngineSo = dlopen("bin/engine_srv.so", RTLD_NOW);
-	if(!pEngineSo)
-	{
-		snprintf(error, maxlength, "Could not dlopen engine_srv.so");
-		SDK_OnUnload();
-		return false;
-	}
-
 	// Apply all patches
 	for(size_t i = 0; i < sizeof(gs_Patches) / sizeof(*gs_Patches); i++)
 	{
 		struct SrcdsPatch *pPatch = &gs_Patches[i];
 		int PatchLen = strlen(pPatch->pPatchPattern);
 
-		void *pBinary = pPatch->engine ? pEngineSo : pServerSo;
+		void *pBinary = dlopen(pPatch->pLibrary, RTLD_NOW);
+		if(!pBinary)
+		{
+			snprintf(error, maxlength, "Could not dlopen %s", pPatch->pLibrary);
+			SDK_OnUnload();
+			return false;
+		}
+
 		pPatch->pAddress = (uintptr_t)memutils->ResolveSymbol(pBinary, pPatch->pSignature);
+		dlclose(pBinary);
 		if(!pPatch->pAddress)
 		{
-			snprintf(error, maxlength, "Could not find symbol: %s", pPatch->pSignature);
-			dlclose(pServerSo);
-			dlclose(pEngineSo);
+			snprintf(error, maxlength, "Could not find symbol: %s in %s (%p)",
+				pPatch->pSignature, pPatch->pLibrary, pBinary);
 			SDK_OnUnload();
 			return false;
 		}
 
-		pPatch->pPatchAddress = FindPattern(pPatch->pAddress, pPatch->pPatchSignature, pPatch->pPatchPattern, 1024);
-		if(!pPatch->pPatchAddress)
+		SrcdsPatch::Restore **ppRestore = &pPatch->pRestore;
+
+		if(pPatch->functionCall)
 		{
-			snprintf(error, maxlength, "Could not find patch signature for symbol: %s", pPatch->pSignature);
-			dlclose(pServerSo);
-			dlclose(pEngineSo);
-			SDK_OnUnload();
-			return false;
+			void *pFunctionBinary = dlopen(pPatch->pFunctionLibrary, RTLD_NOW);
+			if(!pFunctionBinary)
+			{
+				snprintf(error, maxlength, "Could not dlopen %s", pPatch->pFunctionLibrary);
+				SDK_OnUnload();
+				return false;
+			}
+
+			pPatch->pSignatureAddress = (uintptr_t)memutils->ResolveSymbol(pFunctionBinary, (char *)pPatch->pPatchSignature);
+			dlclose(pFunctionBinary);
+			if(!pPatch->pSignatureAddress)
+			{
+				snprintf(error, maxlength, "Could not find patch signature symbol: %s in %s (%p)",
+					(char *)pPatch->pPatchSignature, pPatch->pFunctionLibrary, pFunctionBinary);
+				SDK_OnUnload();
+				return false;
+			}
 		}
 
-		pPatch->pOriginal = (unsigned char *)malloc(PatchLen * sizeof(unsigned char));
-
-		SourceHook::SetMemAccess((void *)pPatch->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_WRITE|SH_MEM_EXEC);
-		for(int j = 0; j < PatchLen; j++)
+		uintptr_t ofs = 0;
+		int found;
+		for(found = 0; found < pPatch->occurrences; found++)
 		{
-			pPatch->pOriginal[j] = *(unsigned char *)(pPatch->pPatchAddress + j);
-			*(unsigned char *)(pPatch->pPatchAddress + j) = pPatch->pPatch[j];
+			uintptr_t pPatchAddress;
+			if(pPatch->functionCall)
+				pPatchAddress = FindFunctionCall(pPatch->pAddress + ofs, pPatch->pSignatureAddress, pPatch->range - ofs);
+			else
+				pPatchAddress = FindPattern(pPatch->pAddress + ofs, pPatch->pPatchSignature, pPatch->pPatchPattern, pPatch->range - ofs);
+
+			if(!pPatchAddress)
+			{
+				if(found)
+					break;
+
+				snprintf(error, maxlength, "Could not find patch signature for symbol: %s", pPatch->pSignature);
+				SDK_OnUnload();
+				return false;
+			}
+			ofs = pPatchAddress - pPatch->pAddress + PatchLen;
+
+			// Create restore object
+			*ppRestore = (SrcdsPatch::Restore *)new SrcdsPatch::Restore();
+			SrcdsPatch::Restore *pRestore = *ppRestore;
+			pRestore->pPatchAddress = pPatchAddress;
+			pRestore->pOriginal = (unsigned char *)malloc(PatchLen * sizeof(unsigned char));
+
+			SourceHook::SetMemAccess((void *)pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_WRITE|SH_MEM_EXEC);
+			for(int j = 0; j < PatchLen; j++)
+			{
+				pRestore->pOriginal[j] = *(unsigned char *)(pPatchAddress + j);
+				*(unsigned char *)(pPatchAddress + j) = pPatch->pPatch[j];
+			}
+			SourceHook::SetMemAccess((void *)pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_EXEC);
+
+			ppRestore = &((*ppRestore)->pNext);
 		}
-		SourceHook::SetMemAccess((void *)pPatch->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_EXEC);
 	}
 
-	dlclose(pServerSo);
-	dlclose(pEngineSo);
-
 	return true;
 }
 
@@ -612,6 +859,18 @@ void CSSFixes::SDK_OnUnload()
 		g_pDetour_PostConstructor = NULL;
 	}
 
+	if (g_pDetour_CreateEntityByName != NULL)
+	{
+		g_pDetour_CreateEntityByName->Destroy();
+		g_pDetour_CreateEntityByName = NULL;
+	}
+
+	if (g_pDetour_PassesFilterImpl != NULL)
+	{
+		g_pDetour_PassesFilterImpl->Destroy();
+		g_pDetour_PassesFilterImpl = NULL;
+	}
+
 	if(g_pDetour_FindUseEntity != NULL)
 	{
 		g_pDetour_FindUseEntity->Destroy();
@@ -656,18 +915,26 @@ void CSSFixes::SDK_OnUnload()
 		struct SrcdsPatch *pPatch = &gs_Patches[i];
 		int PatchLen = strlen(pPatch->pPatchPattern);
 
-		if(!pPatch->pOriginal)
-			continue;
-
-		SourceHook::SetMemAccess((void *)pPatch->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_WRITE|SH_MEM_EXEC);
-		for(int j = 0; j < PatchLen; j++)
+		SrcdsPatch::Restore *pRestore = pPatch->pRestore;
+		while(pRestore)
 		{
-			*(unsigned char *)(pPatch->pPatchAddress + j) = pPatch->pOriginal[j];
-		}
-		SourceHook::SetMemAccess((void *)pPatch->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_EXEC);
+			if(!pRestore->pOriginal)
+				break;
 
-		free(pPatch->pOriginal);
-		pPatch->pOriginal = NULL;
+			SourceHook::SetMemAccess((void *)pRestore->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_WRITE|SH_MEM_EXEC);
+			for(int j = 0; j < PatchLen; j++)
+			{
+				*(unsigned char *)(pRestore->pPatchAddress + j) = pRestore->pOriginal[j];
+			}
+			SourceHook::SetMemAccess((void *)pRestore->pPatchAddress, PatchLen, SH_MEM_READ|SH_MEM_EXEC);
+
+			free(pRestore->pOriginal);
+			pRestore->pOriginal = NULL;
+
+			void *freeMe = pRestore;
+			pRestore = pRestore->pNext;
+			free(freeMe);
+		}
 	}
 }
 

gamedata/CSSFixes.txt

@@ -15,6 +15,18 @@
 				"library"	"server"
 				"linux"		"@_ZN11CBaseEntity15PostConstructorEPKc"
 			}
+			
+			"CBaseFilter_PassesFilterImpl"
+			{
+				"library"	"server"
+				"linux"		"@_ZN11CBaseFilter16PassesFilterImplEP11CBaseEntityS1_"
+			}
+
+			"CreateEntityByName"
+			{
+				"library"	"server"
+				"linux"		"@_Z18CreateEntityByNamePKci"
+			}
 
 			"CBasePlayer_FindUseEntity"
 			{

smsdk_config.h

@@ -40,7 +40,7 @@
 /* Basic information exposed publicly */
 #define SMEXT_CONF_NAME			"CSSFixes"
 #define SMEXT_CONF_DESCRIPTION	"Patches bugs in the CSS server binary and more..."
-#define SMEXT_CONF_VERSION		"1.16"
+#define SMEXT_CONF_VERSION		"1.17"
 #define SMEXT_CONF_AUTHOR		"BotoX"
 #define SMEXT_CONF_URL			""
 #define SMEXT_CONF_LOGTAG		"CSSFIXES"