Now support the 2.1.2.5 patch.

Author: spumer

Makefile

@@ -19,8 +19,8 @@ PROJECT = left4fix
 #Uncomment for Metamod: Source enabled extension
 #USEMETA = true
 
-OBJECTS = sdk/smsdk_ext.cpp extension.cpp util.cpp routine.cpp codepatch/patchmanager.cpp detours/on_revived_by_defib.cpp codepatch/score_code_8.cpp\
-			 detours/on_recompute_versus_completion.cpp detours/on_get_completion_by_character.cpp detours/detour.cpp asm/asm.c
+OBJECTS = sdk/smsdk_ext.cpp extension.cpp util.cpp routine.cpp codepatch/patchmanager.cpp detours/on_revived_by_defib.cpp codepatch/score_code.cpp\
+			detours/end_versus_mode_round.cpp detours/on_recompute_versus_completion.cpp detours/on_get_completion_by_character.cpp detours/detour.cpp asm/asm.c
 #detours/end_versus_mode_round.cpp
 ##############################################
 ### CONFIGURE ANY OTHER FLAGS/OPTIONS HERE ###

README.md

@@ -1,4 +1,5 @@
 Left4Fix
 ========
 
-Extension for SourceMod written on C++ and fix major bug on servers more than 8 players: incorrect completion score calculation.
+Extension for SourceMod written on C++ and fix major bug on servers more than 8 players: incorrect completion score calculation.
+Main thread on the forum: http://forums.alliedmods.net/showthread.php?t=219774

codepatch/patch_description.txt

@@ -0,0 +1,44 @@
+
+UpdateMarkersReached: E8 ? ? ? ? F3 0F 2A ? ? C1 F8 02 (EAX, EBX, EDX)
+AddSurvivorStats: E8 ? ? ? ? C1 F8 02 (EAX, ECX, EDX)
+GetVersusCompletion: 8B 55 ? A1 ? ? ? ? 8B BA E8 0D 00 00 89 ? ? C1 FF 02 (EAX, EDI, EDX)
+
+
+UpdateMarkersReached_patch:
+
+E9 ? ? ? ?			/* JMP [address] */
+8B 80 E8 0D 00 00   /* mov eax, [eax+3560] */
+31 D2				/* xor edx, edx */
+BB 0A 00 00 00		/* mov ebx, 10 */
+F7 F3				/* div ebx */
+E9 ? ? ? ?			/* JMP [address] ;jump to next instruction */
+					/* NOP 3 bytes (sar eax, 2) */
+
+Result:
+{ 0x8B, 0x80, 0xE8, 0x0D, 0x00, 0x00, 0x31, 0xD2, 0xBB, 0x0A, 0x00, 0x00, 0x00, 0xF7, 0xF3 } 
+
+AddSurvivorStats_patch:
+E9 ? ? ? ?			/* JMP [address] */
+8B 80 E8 0D 00 00	/* mov eax, [eax+3560] */
+31 D2				/* xor edx, edx */
+B9 0A 00 00 00		/* mov ecx, 10 */
+F7 F1				/* div ecx */
+E9 ? ? ? ?			/* JMP [address] ;jump to next instruction */
+Result:
+{ 0x8B, 0x80, 0xE8, 0x0D, 0x00, 0x00, 0x31, 0xD2, 0xB9, 0x0A, 0x00, 0x00, 0x00, 0xF7, 0xF1 }
+
+GetVersusCompletion_patch:
+
+E9 ? ? ? ?			/* JMP [address] */
+8B 45 08			/* mov eax, [ebp+arg_0] */
+					/* copy A1 ? ? ? ? to trampoline end */
+8B 80 E8 0D 00 00	/* mov eax, [eax+3560] */
+					/* copy 89 ? ? to trampoline end */
+31 D2				/* xor edx, edx */
+BF 0A 00 00 00		/* mov edi, 10 */
+F7 F7				/* div edi */
+89 C7				/* mov edi, eax */
+E9 ? ? ? ?			/* JMP [address] ;jump to next instruction */
+Result:
+{ 0x8B, 0x45, 0x08, 0x8B, 0x80, 0xE8, 0x0D, 0x00, 0x00, 0x31, 0xD2, 0xBF, 0x0A, 0x00, 0x00, 0x00, 0xF7, 0xF7, 0x89, 0xC7 } 
+

codepatch/score_code.cpp

@@ -34,18 +34,24 @@
 #include "asm/asm.h"
 #include "CDetour/detourhelpers.h"
 
-// TODO: Replace sig search to offsets, copy original by copy_bytes and restore when unpatch.
+#define OP_CALL 0xE8
+#define OP_CALL_SIZE 5
 
-unsigned char UpdateMarkersReached_orig[]  = { 0xE8, 0x35, 0x69, 0xBA, 0xFF, 0xC1, 0xF8, 0x02 };
-unsigned char UpdateMarkersReached_patch[] = { 0x8B, 0x80, 0x90, 0x04, 0x00, 0x00, 0x31, 0xD2, 0xB9, TEAM_SIZE, 0x00, 0x00, 0x00, 0xF7, 0xF1 };
+#define OP_MOV 0xA1
+#define OP_MOV_SIZE 5
 
-unsigned char AddSurvivorStats_orig[]  = { 0xE8, 0xF1, 0x9C, 0xB7, 0xFF, 0xC1, 0xF8, 0x02 };
-unsigned char AddSurvivorStats_patch[] = { 0x8B, 0x80, 0x90, 0x04, 0x00, 0x00, 0x31, 0xD2, 0xB9, TEAM_SIZE, 0x00, 0x00, 0x00, 0xF7, 0xF1 };
+// TODO: Create CUT/PASTE masks functions for wrap instructions inside my patch
 
-unsigned char GetVersusCompletion_orig[]  = { 0x8B, 0xB8, 0x90, 0x04, 0x00, 0x00, 0xC1, 0xFF, 0x02 };
-unsigned char GetVersusCompletion_patch[] = { 0x8B, 0x80, 0x90, 0x04, 0x00, 0x00, 0x31, 0xD2, 0xBF, TEAM_SIZE, 0x00, 0x00, 0x00, 0xF7, 0xF7, 0x89, 0xC7 };
+unsigned char UpdateMarkersReached_orig[]  = { 0xE8, 0x2A, 0x2A, 0x2A, 0x2A, 0xF3, 0x0F, 0x2A, 0x2A, 0x2A, 0xC1, 0xF8, 0x02 };
+unsigned char UpdateMarkersReached_patch[] = { 0x8B, 0x80, 0xE8, 0x0D, 0x00, 0x00, 0x31, 0xD2, 0xBB, TEAM_SIZE, 0x00, 0x00, 0x00, 0xF7, 0xF3 };
 
-#ifdef _DEBUG
+unsigned char AddSurvivorStats_orig[]  = { 0xE8, 0x2A, 0x2A, 0x2A, 0x2A, 0xC1, 0xF8, 0x02 };
+unsigned char AddSurvivorStats_patch[] = { 0x8B, 0x80, 0xE8, 0x0D, 0x00, 0x00, 0x31, 0xD2, 0xB9, TEAM_SIZE, 0x00, 0x00, 0x00, 0xF7, 0xF1 };
+
+unsigned char GetVersusCompletion_orig[]  = { 0x8B, 0x55, 0x2A, 0xA1, 0x2A, 0x2A, 0x2A, 0x2A, 0x8B, 0xBA, 0xE8, 0x0D, 0x00, 0x00, 0x89, 0x2A, 0x2A, 0xC1, 0xFF, 0x02 };
+unsigned char GetVersusCompletion_patch[] = { 0x8B, 0x45, 0x08, 0x8B, 0x80, 0xE8, 0x0D, 0x00, 0x00, 0x31, 0xD2, 0xBF, TEAM_SIZE, 0x00, 0x00, 0x00, 0xF7, 0xF7, 0x89, 0xC7 };
+
+#ifdef DEBUG
 void memDump(unsigned char *pAddr, size_t len) {
 	g_pSmmAPI->ConPrintf("Start dump at: %p\n", pAddr);
 	size_t llen = len;
@@ -69,24 +75,39 @@ void ScoreCode::Patch() {
 
 	ISourcePawnEngine *sengine = g_pSM->GetScriptingEngine();
 
+	// prepare the trampoline
 	m_injectMarker = (unsigned char *)sengine->AllocatePageMemory(sizeof(UpdateMarkersReached_patch) + OP_JMP_SIZE);
 	copy_bytes(UpdateMarkersReached_patch, m_injectMarker, sizeof(UpdateMarkersReached_patch));
-	inject_jmp(m_injectMarker + sizeof(UpdateMarkersReached_patch), m_pMarkers + sizeof(UpdateMarkersReached_orig));
+	inject_jmp(m_injectMarker + sizeof(UpdateMarkersReached_patch), m_pMarkers + OP_CALL_SIZE);	
+	// copy original code to our buffer
 	SetMemPatchable(m_pMarkers, sizeof(UpdateMarkersReached_orig));
+	copy_bytes(m_pMarkers, UpdateMarkersReached_orig, sizeof(UpdateMarkersReached_orig));
+	// inject jmp to trampoline and nop some bytes after target instruction
 	inject_jmp(m_pMarkers, m_injectMarker);
-	fill_nop(m_pMarkers + OP_JMP_SIZE, sizeof(UpdateMarkersReached_orig) - OP_JMP_SIZE);
+	fill_nop(m_pMarkers + sizeof(UpdateMarkersReached_orig) - 3, 3);
 
+	// prepare the trampoline
 	m_injectStats = (unsigned char *)sengine->AllocatePageMemory(sizeof(AddSurvivorStats_patch) + OP_JMP_SIZE);
 	copy_bytes(AddSurvivorStats_patch, m_injectStats, sizeof(AddSurvivorStats_patch));
 	inject_jmp(m_injectStats + sizeof(AddSurvivorStats_patch), m_pL4DStats + sizeof(AddSurvivorStats_orig));	
+	// copy original code to our buffer
 	SetMemPatchable(m_pL4DStats, sizeof(AddSurvivorStats_orig));
+	copy_bytes(m_pL4DStats, AddSurvivorStats_orig, sizeof(AddSurvivorStats_orig));
+	// inject jmp to trampoline
 	inject_jmp(m_pL4DStats, m_injectStats);
 	fill_nop(m_pL4DStats + OP_JMP_SIZE, sizeof(AddSurvivorStats_orig) - OP_JMP_SIZE);
 
+	// prepare the trampoline
 	m_injectCompl = (unsigned char *)sengine->AllocatePageMemory(sizeof(GetVersusCompletion_patch) + OP_JMP_SIZE);
-	copy_bytes(GetVersusCompletion_patch, m_injectCompl, sizeof(GetVersusCompletion_patch));
-	inject_jmp(m_injectCompl + sizeof(GetVersusCompletion_patch), m_pCompletion + sizeof(GetVersusCompletion_orig));	
+	unsigned char *pInjectEnd = m_injectCompl;
+	copy_bytes(GetVersusCompletion_patch, m_injectCompl, sizeof(GetVersusCompletion_patch)); pInjectEnd += sizeof(GetVersusCompletion_patch);
+	copy_bytes(m_pCompletion + 3, pInjectEnd, OP_MOV_SIZE); pInjectEnd += OP_MOV_SIZE;
+	copy_bytes(m_pCompletion + sizeof(GetVersusCompletion_orig) - 6, pInjectEnd, 3); pInjectEnd += 3;
+	inject_jmp(pInjectEnd, m_pCompletion + sizeof(GetVersusCompletion_orig));	
+	// copy original code to our buffer
 	SetMemPatchable(m_pCompletion, sizeof(GetVersusCompletion_orig));
+	copy_bytes(m_pCompletion, GetVersusCompletion_orig, sizeof(GetVersusCompletion_orig));
+	// inject jmp to trampoline
 	inject_jmp(m_pCompletion, m_injectCompl);
 	fill_nop(m_pCompletion + OP_JMP_SIZE, sizeof(GetVersusCompletion_orig) - OP_JMP_SIZE);
 

detours/end_versus_mode_round.cpp

@@ -0,0 +1,49 @@
+/**
+ * vim: set ts=4 :
+ * =============================================================================
+ * Left 4 Fix SourceMod Extension
+ * Copyright (C) 2013 Spumer.
+ * =============================================================================
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, AlliedModders LLC gives you permission to link the
+ * code of this program (as well as its derivative works) to "Half-Life 2," the
+ * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
+ * by the Valve Corporation.  You must obey the GNU General Public License in
+ * all respects for all other code used.  Additionally, AlliedModders LLC grants
+ * this exception to all derivative works.  AlliedModders LLC defines further
+ * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
+ * or <http://www.sourcemod.net/license.php>.
+ *
+ * Version: $Id$
+ */
+
+#include "end_versus_mode_round.h"
+#include "extension.h"
+
+namespace Detours
+{
+	void l4fx_EndVersusModeRound::OnEndVersusModeRound(bool countSurvivors)
+	{
+		if(g_bRoundEnd_Pre) return;
+		g_bRoundEnd_Pre = true;
+		(this->*(GetTrampoline()))(countSurvivors);
+		
+		memset(g_iHighestVersusSurvivorCompletion, 0, sizeof(g_iHighestVersusSurvivorCompletion));
+		memset(g_players, 0, sizeof(g_players));
+		memset(g_scores, 0, sizeof(g_scores));
+		__sync_and_and_fetch(&g_totalResult, 0); // g_totalResult = 0;
+		return;
+	}
+};

detours/end_versus_mode_round.h

@@ -0,0 +1,62 @@
+/**
+ * vim: set ts=4 :
+ * =============================================================================
+ * Left 4 Fix SourceMod Extension
+ * Copyright (C) 2013 Spumer.
+ * =============================================================================
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, AlliedModders LLC gives you permission to link the
+ * code of this program (as well as its derivative works) to "Half-Life 2," the
+ * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
+ * by the Valve Corporation.  You must obey the GNU General Public License in
+ * all respects for all other code used.  Additionally, AlliedModders LLC grants
+ * this exception to all derivative works.  AlliedModders LLC defines further
+ * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
+ * or <http://www.sourcemod.net/license.php>.
+ *
+ * Version: $Id$
+ */
+
+#ifndef _INCLUDE_SOURCEMOD_DETOUR_END_VERSUS_MODE_ROUND_H_
+#define _INCLUDE_SOURCEMOD_DETOUR_END_VERSUS_MODE_ROUND_H_
+
+#include "detour_template.h"
+
+namespace Detours {
+
+class l4fx_EndVersusModeRound;
+typedef void (l4fx_EndVersusModeRound::*EndVersusModeRoundFunc)(bool);
+
+class l4fx_EndVersusModeRound : public DetourTemplate<EndVersusModeRoundFunc, l4fx_EndVersusModeRound>
+{
+private: //note: implementation of DetourTemplate abstracts
+
+	void OnEndVersusModeRound(bool countSurvivors);
+
+	// get the signature name from the game conf
+	virtual const char *GetSignatureName()
+	{
+		return "EndVersusModeRound";
+	}
+
+	//notify our patch system which function should be used as the detour
+	virtual EndVersusModeRoundFunc GetDetour()
+	{
+		return &l4fx_EndVersusModeRound::OnEndVersusModeRound;
+	}
+};
+
+};
+#endif

detours/on_recompute_versus_completion.cpp

@@ -99,7 +99,7 @@ namespace Detours
 			if(pPlayer == NULL) continue;
 
 			// if(GET_TEAM(client) == 2) {
-			if( *reinterpret_cast<uint8_t*>((unsigned char*)pPlayer + 576) == 2 ) {		// Get player team index
+			if( *reinterpret_cast<uint8_t*>((unsigned char*)pPlayer + 588) == 2 ) {		// Get player team index
 				if(IsDead(pPlayer)) continue;
 				*pCompl = g_scores[client] = GetVersusCompletionFunc(pGameRules, pPlayer);
 				result += *pCompl++;

detours/on_recompute_versus_completion.h

@@ -60,7 +60,7 @@ class RecomputeVersusCompletion: public DetourTemplate<OnRecomputeFunc, Recomput
 
 	static int getHighest(const void* p1, const void* p2) { return *(int*)p2 - *(int*)p1; }
 
-	static bool IsDead(CBaseEntity *pPlayer) { return *(bool*)((unsigned char*)pPlayer+252); }
+	static bool IsDead(CBaseEntity *pPlayer) { return *(bool*)((unsigned char*)pPlayer+260); }
 };
 
 };

detours/on_revived_by_defib.cpp

@@ -1,8 +1,8 @@
 /**
  * vim: set ts=4 :
  * =============================================================================
- * Left 4 Downtown SourceMod Extension
- * Copyright (C) 2009 Igor "Downtown1" Smirnov.
+ * Left 4 Fix SourceMod Extension
+ * Copyright (C) 2013 Spumer.
  * =============================================================================
  *
  * This program is free software; you can redistribute it and/or modify it under

detours/on_revived_by_defib.h

@@ -1,8 +1,8 @@
 /**
  * vim: set ts=4 :
  * =============================================================================
- * Left 4 Downtown SourceMod Extension
- * Copyright (C) 2009 Igor "Downtown1" Smirnov.
+ * Left 4 Fix SourceMod Extension
+ * Copyright (C) 2013 Spumer.
  * =============================================================================
  *
  * This program is free software; you can redistribute it and/or modify it under