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more reliable shinario hook

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This commit is contained in:
Akash Mozumdar 2019-07-29 01:50:20 -04:00
parent e498442eb4
commit fe9c9435c5
1 changed files with 35 additions and 4 deletions
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39
texthook/engine/engine.cc
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@ -60,11 +60,12 @@ enum { VNR_TEXT_CAPACITY = 1500 }; // estimated max number of bytes allowed in V
namespace { // unnamed helpers
template <void* funcA, void* funcW> bool StackSearchingTrigger(LPVOID funcAddr, DWORD, DWORD stack)
template <void* funcA, void* funcW, int depth = 100>
bool StackSearchingTrigger(LPVOID funcAddr, DWORD, DWORD stack)
{
bool ret = false;
if (funcAddr != funcA && funcAddr != funcW) return false;
for (int i = 0; i < 100; ++i)
for (int i = 0; i < depth; ++i)
{
// Address of text is somewhere on stack in call to func. Search for it.
DWORD addr = *((DWORD*)stack + i);
@ -79,7 +80,7 @@ namespace { // unnamed helpers
hp.address = addr;
ConsoleOutput("Textractor: triggered: adding dynamic reader");
NewHook(hp, "READ");
ret = true;
//ret = true;
}
};
}
@ -5788,6 +5789,12 @@ int GetShinaRioVersion()
return ret;
}
bool IsSJIS(char* text)
{
for (int i = 0; i < 3; ++i) if (!IsDBCSLeadByte(text[i * 2])) return false;
return true;
}
} // unnamed namespace
// jichi 8/24/2013: Rewrite ShinaRio logic.
@ -5797,7 +5804,31 @@ bool InsertShinaHook()
int ver = GetShinaRioVersion();
if (ver >= 50) {
SetTrigger();
trigger_fun = StackSearchingTrigger<GetGlyphOutlineA, NULL>;
//trigger_fun = StackSearchingTrigger<GetGlyphOutlineA, NULL>;
trigger_fun = [](LPVOID funcAddr, DWORD, DWORD stack)
{
bool ret = false;
if (funcAddr != GetGlyphOutlineA) return false;
for (int i = 0; i < 100; ++i)
{
// Address of text is somewhere on stack in call to func. Search for it.
DWORD addr = *((DWORD*)stack + i);
//ConsoleOutput(std::to_string((DWORD)*addr).c_str());
if (IthGetMemoryRange((void*)addr, nullptr, nullptr) && strlen((char*)addr) > 9)
{
if (IsSJIS((char*)addr) || strstr((char*)addr, "_r"))
{
HookParam hp = {};
hp.type = DIRECT_READ;
hp.address = addr;
ConsoleOutput("Textractor: triggered: adding dynamic reader");
NewHook(hp, "READ");
ret = true;
}
};
}
return ret;
};
ConsoleOutput("Textractor: ShinaRio 2.50+: adding trigger");
return true;
}