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Fix compatibility with new mods which use the C runtime of soku #29

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Fix compatibility with new mods which use the C runtime of soku #29

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17 changes: 11 additions & 6 deletions swrstoys/dummy.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,8 @@ FARPROC p_Direct3DCreate9Ex = NULL;
HMODULE orig_module = NULL;
HMODULE this_module = NULL;

int (*ogSecurityInitCookie)();
typedef int (*PIFV)(void);
int (*ogInittermE)(PIFV* start, PIFV* end);
int (*ogSokuMain)(int a, int b, int c, int d);

LONG WINAPI UnhandledExFilter(PEXCEPTION_POINTERS ExPtr)
Expand Down Expand Up @@ -82,14 +83,18 @@ LONG WINAPI UnhandledExFilter(PEXCEPTION_POINTERS ExPtr)

int SokuMain(int a, int b, int c, int d)
{
SetUnhandledExceptionFilter(UnhandledExFilter);
return ogSokuMain(a, b, c, d);
}

int mySecurityInitCookie()
int myInittermE(PIFV* start, PIFV* end)
{
Hook(this_module);
return ogSecurityInitCookie();
int ret = ogInittermE(start, end);
if (ret == 0) {
// if initialize successfully
SetUnhandledExceptionFilter(UnhandledExFilter);
Hook(this_module);
}
return ret;
}

BOOL APIENTRY DllMain(HMODULE this_module_, DWORD ul_reason_for_call, LPVOID) {
Expand Down Expand Up @@ -125,7 +130,7 @@ BOOL APIENTRY DllMain(HMODULE this_module_, DWORD ul_reason_for_call, LPVOID) {

VirtualProtect((PVOID)TEXT_SECTION_OFFSET, TEXT_SECTION_SIZE, PAGE_EXECUTE_WRITECOPY, &old);
ogSokuMain = SokuLib::TamperNearJmpOpr(0x821844, SokuMain);
ogSecurityInitCookie = SokuLib::TamperNearJmpOpr(0x8218b2, mySecurityInitCookie);
ogInittermE = SokuLib::TamperNearJmpOpr(0x8240b3, myInittermE);
VirtualProtect((PVOID)TEXT_SECTION_OFFSET, TEXT_SECTION_SIZE, old, &old);
break;
}
Expand Down