mirror of
https://github.com/hyprwm/Hyprland
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78 lines
No EOL
2 KiB
C++
78 lines
No EOL
2 KiB
C++
#pragma once
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#include <string>
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#include <vector>
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#include <memory>
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#define HANDLE void*
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#define HOOK_TRAMPOLINE_MAX_SIZE 64
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class CFunctionHook {
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public:
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CFunctionHook(HANDLE owner, void* source, void* destination);
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~CFunctionHook();
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bool hook();
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bool unhook();
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CFunctionHook(const CFunctionHook&) = delete;
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CFunctionHook(CFunctionHook&&) = delete;
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CFunctionHook& operator=(const CFunctionHook&) = delete;
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CFunctionHook& operator=(CFunctionHook&&) = delete;
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void* m_pOriginal = nullptr;
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private:
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void* m_pSource = nullptr;
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void* m_pFunctionAddr = nullptr;
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void* m_pTrampolineAddr = nullptr;
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void* m_pDestination = nullptr;
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size_t m_iHookLen = 0;
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size_t m_iTrampoLen = 0;
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HANDLE m_pOwner = nullptr;
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bool m_bActive = false;
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void* m_pOriginalBytes = nullptr;
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struct SInstructionProbe {
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size_t len = 0;
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std::string assembly = "";
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std::vector<size_t> insSizes;
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};
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struct SAssembly {
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std::vector<char> bytes;
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};
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SInstructionProbe probeMinimumJumpSize(void* start, size_t min);
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SInstructionProbe getInstructionLenAt(void* start);
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SAssembly fixInstructionProbeRIPCalls(const SInstructionProbe& probe);
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friend class CHookSystem;
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};
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class CHookSystem {
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public:
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CFunctionHook* initHook(HANDLE handle, void* source, void* destination);
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bool removeHook(CFunctionHook* hook);
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void removeAllHooksFrom(HANDLE handle);
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private:
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std::vector<std::unique_ptr<CFunctionHook>> m_vHooks;
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uint64_t getAddressForTrampo();
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struct SAllocatedPage {
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uint64_t addr = 0;
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uint64_t len = 0;
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uint64_t used = 0;
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};
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std::vector<SAllocatedPage> pages;
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friend class CFunctionHook;
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};
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inline std::unique_ptr<CHookSystem> g_pFunctionHookSystem; |