From a3b15d870187d40696f8bbde42cfc0e06af233b4 Mon Sep 17 00:00:00 2001
From: Blu3train <frtempra@gmail.com>
Date: Sun, 30 Apr 2023 00:28:20 +0200
Subject: [PATCH] Minori engine hooks

---
 texthook/engine/engine.cc  | 122 +++++++++++++++++++++++++++++++++++++
 texthook/engine/engine.h   |   1 +
 texthook/engine/match32.cc |   4 ++
 3 files changed, 127 insertions(+)

diff --git a/texthook/engine/engine.cc b/texthook/engine/engine.cc
index c2c7abc..45de08a 100644
--- a/texthook/engine/engine.cc
+++ b/texthook/engine/engine.cc
@@ -21728,6 +21728,128 @@ bool InsertNamcoPS2Hook()
 }
 #endif // 0
 
+bool Minori1EngFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
+{
+  auto text = reinterpret_cast<LPSTR>(data);
+  auto len = reinterpret_cast<size_t *>(size);
+  StringCharReplacer(text, len, "\\n", 2, ' ');
+  StringFilter(text, len, "\\a", 2);
+  StringFilter(text, len, "\\v", 2);
+  CharReplacer(text, len, '\xC4', '-');
+  CharReplacer(text, len, '\x93', '"');
+  CharReplacer(text, len, '\x94', '"');
+  CharReplacer(text, len, '\x92', '\'');
+  StringCharReplacer(text, len, "\\I", 2, '\'');
+  StringCharReplacer(text, len, "\\P", 2, '\'');
+
+  return true;
+}
+
+bool Minori1JapFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
+{
+  auto text = reinterpret_cast<LPSTR>(data);
+  auto len = reinterpret_cast<size_t *>(size);
+  StringFilter(text, len, "\\a", 2);
+  StringFilter(text, len, "\\v", 2);
+  StringFilter(text, len, "\\N", 2);
+
+  if (cpp_strnstr(text, "{", *len)) {
+    StringFilterBetween(text, len, "{", 1, "}", 1);
+  }
+
+  return true;
+}
+
+bool InsertMinori1Hook() 
+{
+  //by Blu3train
+    /*
+    * Sample games:
+    * https://vndb.org/v19644
+    * https://vndb.org/v12562
+    */
+  const BYTE bytes[] = {
+    0x84, 0xC0,             // test al,al                      << hook here
+    0x0F, 0x85, XX4,        // jne trinoline_en_AA.exe+243E1
+    0x68, XX4,              // push trinoline_en_AA.exe+118BF8 << alt eng hook
+    0x33, 0xFF              // xor edi,edi
+  };
+  enum { alt_addr_offset = 8 };
+
+  ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
+  ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
+  if (!addr) {
+    ConsoleOutput("vnreng:Minori1: pattern not found");
+    return false;
+  }
+
+  HookParam hp = {};
+  hp.address = addr;
+  hp.offset = pusha_edx_off -4;
+  hp.codepage = 932;
+  hp.type = USING_STRING;
+  hp.filter_fun = Minori1JapFilter;
+  ConsoleOutput("vnreng: INSERT Minori1");
+  NewHook(hp, "Minori1");
+
+  const BYTE bytes2[] = {
+    0x84, 0xC0,             // test al,al
+    0x0F, 0x85, XX4,        // jne trinoline_en_AA.exe+243E1
+    0x68, XX4,              // push trinoline_en_AA.exe+118BF8
+    0x33, 0xFF              // xor edi,edi
+  };
+  ULONG addr2 = MemDbg::findBytes(bytes2, sizeof(bytes2), processStartAddress, processStartAddress + range);
+  if (addr) {
+    HookParam hp = {};
+    hp.address = addr + alt_addr_offset;
+    hp.offset = pusha_edx_off -4;
+    hp.type = USING_STRING;
+    hp.filter_fun = Minori1EngFilter;
+    ConsoleOutput("vnreng: INSERT Minori1eng");
+    NewHook(hp, "Minori1eng");
+  }
+
+  return true;
+}
+
+bool InsertMinori2Hook() 
+{
+  //by Blu3train
+    /*
+    * Sample games:
+    * https://vndb.org/v35
+    */
+  const BYTE bytes[] = {
+    0x80, 0x38, 0x00,              // cmp byte ptr [eax],00
+    0x0F, 0x84, XX4,               // je WindRP.exe+2832A
+    0xB8, 0x20, 0x03, 0x00, 0x00,  // mov eax,00000320
+    0x89, 0x44, 0x24, 0x10,        // mov [esp+10],eax
+    0x89, 0x44, 0x24, 0x14,        // mov [esp+14],eax
+    0x8B, 0x47, 0x20               // mov eax,[edi+20]
+  };
+  enum { addr_offset = 0 };
+
+  ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
+  ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
+  if (!addr) {
+    ConsoleOutput("vnreng:Minori2: pattern not found");
+    return false;
+  }
+
+  HookParam hp = {};
+  hp.address = addr + addr_offset;
+  hp.offset = pusha_eax_off -4;
+  hp.index = 0;
+  hp.length_offset = 1;
+  hp.type = NO_CONTEXT | DATA_INDIRECT;
+  ConsoleOutput("vnreng: INSERT Minori2");
+  NewHook(hp, "Minori2");
+  return true;
+}
+
+bool InsertMinoriHooks()
+{ return InsertMinori1Hook() || InsertMinori2Hook();}
+
 } // namespace Engine
 
 // EOF
diff --git a/texthook/engine/engine.h b/texthook/engine/engine.h
index 5e167b2..620916c 100644
--- a/texthook/engine/engine.h
+++ b/texthook/engine/engine.h
@@ -165,6 +165,7 @@ void InsertRealliveHook();      // RealLive: RealLive*.exe
 void InsertStuffScriptHook();   // Stuff: *.mpk
 bool InsertTinkerBellHook();    // TinkerBell: arc00.dat
 bool InsertWaffleHook();        // WAFFLE: cg.pak
+bool InsertMinoriHooks();        // Minori: *.paz
 
 // CIRCUS: avdata/
 bool InsertCircusHook1();
diff --git a/texthook/engine/match32.cc b/texthook/engine/match32.cc
index fffc4c7..297720c 100644
--- a/texthook/engine/match32.cc
+++ b/texthook/engine/match32.cc
@@ -370,6 +370,10 @@ bool DetermineEngineByFile3()
 
 bool DetermineEngineByFile4()
 {
+  if (Util::CheckFile(L"*.paz")) {
+    if (InsertMinoriHooks())
+      return true;
+  }
   if (Util::CheckFile(L"EAGLS.dll")) { // jichi 3/24/2014: E.A.G.L.S
     //ConsoleOutput("vnreng: IGNORE EAGLS");
     InsertEaglsHook();