From e06b8f27c8ee69c95d477d12e37fe8fece6bc73d Mon Sep 17 00:00:00 2001
From: Akash Mozumdar <akashmozumdar@gmail.com>
Date: Thu, 9 Aug 2018 15:27:44 -0400
Subject: [PATCH] bugfix engine and add hook for renpy

---
 vnrhook/src/engine/engine.cc | 21 ++++++++++++++++++++-
 vnrhook/src/engine/engine.h  |  1 +
 vnrhook/src/engine/match.cc  |  7 +++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/vnrhook/src/engine/engine.cc b/vnrhook/src/engine/engine.cc
index 8f314db..305b7e6 100644
--- a/vnrhook/src/engine/engine.cc
+++ b/vnrhook/src/engine/engine.cc
@@ -5746,7 +5746,7 @@ void SpecialHookShina1(DWORD esp_base, HookParam *hp, BYTE, DWORD *data, DWORD *
 int GetShinaRioVersion()
 {
   int ret = 0;
-  HANDLE hFile = CreateFileW(L"RIO.INI", FILE_READ_DATA, FILE_SHARE_READ, nullptr, FILE_OPEN, FILE_ATTRIBUTE_NORMAL, nullptr);
+  HANDLE hFile = CreateFileW(L"RIO.INI", FILE_READ_DATA, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
   if (hFile == INVALID_HANDLE_VALUE)  {
     size_t len = ::wcslen(processName);
     if (len > 3) {
@@ -16435,6 +16435,25 @@ bool InsertAdobeFlash10Hook()
   return true;
 }
 
+bool InsertRenpyHook()
+{
+	HookParam hp = {};
+	hp.address = (DWORD)GetProcAddress(GetModuleHandleW(L"python27"), "PyUnicodeUCS2_Format");
+	if (!hp.address)
+	{
+		ConsoleOutput("NextHooker: Ren'py failed: failed to find python27.dll or PyUnicodeUCS2_Format");
+		return false;
+	}
+	hp.offset = pusha_eax_off - 4;
+	hp.index = 0xc;
+	hp.length_offset = 0;
+	hp.split = pusha_ebx_off - 4;
+	hp.type = USING_STRING | USING_UNICODE | NO_CONTEXT | DATA_INDIRECT | USING_SPLIT;
+	//hp.filter_fun = [](void* str, auto, auto, auto) { return *(wchar_t*)str != L'%'; };
+	NewHook(hp, "Ren'py");
+	return true;
+}
+
 /** jichi 12/26/2014 Mono
  *  Sample game: [141226] ハ�レ�めいと
  */
diff --git a/vnrhook/src/engine/engine.h b/vnrhook/src/engine/engine.h
index 67560cf..8ec064a 100644
--- a/vnrhook/src/engine/engine.h
+++ b/vnrhook/src/engine/engine.h
@@ -132,6 +132,7 @@ bool InsertQLIEHook();          // QLiE: GameData/*.pack
 //bool InsertRai7Hook();          // Rai7puk: rai7.exe
 bool InsertRejetHook();         // Rejet: Module/{gd.dat,pf.dat,sd.dat}
 bool InsertRUGPHook();          // rUGP: rUGP.exe
+bool InsertRenpyHook();         // Ren'py: python27.dll
 bool InsertRetouchHook();       // Retouch: resident.dll
 bool InsertRREHook();           // RunrunEngine: rrecfg.rcf
 bool InsertShinaHook();         // ShinaRio: Rio.ini
diff --git a/vnrhook/src/engine/match.cc b/vnrhook/src/engine/match.cc
index 80c5b80..d34f00a 100644
--- a/vnrhook/src/engine/match.cc
+++ b/vnrhook/src/engine/match.cc
@@ -99,6 +99,13 @@ bool DetermineEngineByFile1()
 	return true;
   }
 
+  // Artikash 8/9/2018: Renpy - sample game https://vndb.org/v19843
+  if (GetModuleHandleW(L"python27"))
+  {
+	  InsertRenpyHook();
+	  return true;
+  }
+
   if (Util::CheckFile(L"*.xp3") || Util::SearchResourceString(L"TVP(KIRIKIRI)")) {
     if (Util::SearchResourceString(L"TVP(KIRIKIRI) Z ")) { // TVP(KIRIKIRI) Z CORE
       // jichi 11/24/2014: Disabled that might crash VBH