mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-11-23 22:05:36 +08:00
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
#include "EME.h"
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/********************************************************************************************
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EMEHook hook: (Contributed by Freaka)
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EmonEngine is used by LoveJuice company and TakeOut. Earlier builds were apparently
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called Runrun engine. String parsing varies a lot depending on the font settings and
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speed setting. E.g. without antialiasing (which very early versions did not have)
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uses TextOutA, fast speed triggers different functions then slow/normal. The user can
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set his own name and some odd control characters are used (0x09 for line break, 0x0D
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for paragraph end) which is parsed and put together on-the-fly while playing so script
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can't be read directly.
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********************************************************************************************/
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bool InsertEMEHook()
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{
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ULONG addr = MemDbg::findCallAddress((ULONG)::IsDBCSLeadByte, processStartAddress, processStopAddress);
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// no needed as first call to IsDBCSLeadByte is correct, but sig could be used for further verification
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// WORD sig = 0x51C3;
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// while (c && (*(WORD*)(c-2)!=sig))
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//{
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// //-0x1000 as FindCallOrJmpAbs always uses an offset of 0x1000
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// c = Util::FindCallOrJmpAbs((DWORD)IsDBCSLeadByte,processStopAddress-c-0x1000+4,c-0x1000+4,false);
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//}
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if (!addr)
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{
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ConsoleOutput("EME: pattern does not exist");
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return false;
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}
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HookParam hp;
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hp.address = addr;
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hp.offset = get_reg(regs::eax);
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hp.type = NO_CONTEXT | DATA_INDIRECT | USING_STRING;
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ConsoleOutput("INSERT EmonEngine");
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// ConsoleOutput("EmonEngine, hook will only work with text speed set to slow or normal!");
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// else ConsoleOutput("Unknown EmonEngine engine");
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return NewHook(hp, "EmonEngine");
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}
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namespace
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{
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bool takeout()
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{
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// https://vndb.org/v6187
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// みちくさ～Loitering on the way～
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trigger_fun = [](LPVOID addr, hook_stack *stack)
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{
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if (addr != (LPVOID)GetGlyphOutlineA)
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return false;
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auto caller = stack->retaddr;
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auto add = MemDbg::findEnclosingAlignedFunction(caller);
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if (!add)
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return true;
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HookParam hp;
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hp.address = add;
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hp.type = USING_STRING;
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hp.offset = get_stack(4);
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hp.filter_fun = [](LPVOID data, size_t *size, HookParam *)
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{
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auto xx = std::string((char *)data, *size);
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static lru_cache<std::string> last(10);
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return !last.touch(xx);
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};
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return NewHook(hp, "takeout");
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};
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return false;
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}
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}
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bool EME::attach_function()
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{
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return InsertEMEHook() | takeout();
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} |