mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-10-22 23:18:16 +08:00
108 lines
3.0 KiB
C++
108 lines
3.0 KiB
C++
#pragma once
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#ifdef _WIN64
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constexpr bool x64 = true;
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#else
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constexpr bool x64 = false;
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#endif
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template <typename T, typename... Xs> struct ArrayImpl { using Type = std::tuple<T, Xs...>[]; };
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template <typename T> struct ArrayImpl<T> { using Type = T[]; };
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template <typename... Ts> using Array = typename ArrayImpl<Ts...>::Type;
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template <auto F> using Functor = std::integral_constant<std::remove_reference_t<decltype(F)>, F>; // shouldn't need remove_reference_t but MSVC is bugged
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struct PermissivePointer
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{
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template <typename T> operator T*() { return (T*)p; }
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void* p;
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};
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template <typename HandleCloser = Functor<CloseHandle>>
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class AutoHandle
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{
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public:
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AutoHandle(HANDLE h) : h(h) {}
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operator HANDLE() { return h.get(); }
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PHANDLE operator&() { static_assert(sizeof(*this) == sizeof(HANDLE)); assert(!h); return (PHANDLE)this; }
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operator bool() { return h.get() != NULL && h.get() != INVALID_HANDLE_VALUE; }
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private:
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struct HandleCleaner { void operator()(void* h) { if (h != INVALID_HANDLE_VALUE) HandleCloser()(PermissivePointer{ h }); } };
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std::unique_ptr<void, HandleCleaner> h;
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};
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template<typename T, typename M = std::mutex>
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class Synchronized
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{
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public:
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template <typename... Args>
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Synchronized(Args&&... args) : contents(std::forward<Args>(args)...) {}
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struct Locker
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{
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T* operator->() { return &contents; }
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std::unique_lock<M> lock;
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T& contents;
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};
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Locker Acquire() { return { std::unique_lock(m), contents }; }
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Locker operator->() { return Acquire(); }
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T Copy() { return Acquire().contents; }
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private:
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T contents;
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M m;
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};
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template <typename F>
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void SpawnThread(const F& f) // works in DllMain unlike std thread
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{
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F* copy = new F(f);
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CloseHandle(CreateThread(nullptr, 0, [](void* copy)
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{
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(*(F*)copy)();
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delete (F*)copy;
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return 0UL;
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}, copy, 0, nullptr));
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}
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inline struct // should be inline but MSVC (linker) is bugged
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{
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inline static BYTE DUMMY[100];
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template <typename T> operator T*() { static_assert(sizeof(T) < sizeof(DUMMY)); return (T*)DUMMY; }
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} DUMMY;
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inline auto Swallow = [](auto&&...) {};
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template <typename T> std::optional<std::remove_cv_t<T>> Copy(T* ptr) { if (ptr) return *ptr; return {}; }
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inline std::optional<std::wstring> getModuleFilename(DWORD processId, HMODULE module = NULL)
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{
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std::vector<wchar_t> buffer(MAX_PATH);
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if (AutoHandle<> process = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, processId))
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if (GetModuleFileNameExW(process, module, buffer.data(), MAX_PATH)) return buffer.data();
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return {};
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}
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inline std::optional<std::wstring> getModuleFilename(HMODULE module = NULL)
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{
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std::vector<wchar_t> buffer(MAX_PATH);
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if (GetModuleFileNameW(module, buffer.data(), MAX_PATH)) return buffer.data();
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return {};
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}
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template<typename T>
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struct SafeFptr {
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T ptr;
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uintptr_t errorvalue;
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SafeFptr(T _ptr, uintptr_t v = {NULL}) : ptr(_ptr), errorvalue(v) {}
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template<typename... Args>
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std::invoke_result_t<T, Args...> operator()(Args... args) {
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if (!ptr) return (std::invoke_result_t<T, Args...>)(errorvalue);
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return ptr(std::forward<Args>(args)...);
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}
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};
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