// List of handles mapped to their kernel object type name. using ProcessHandleMap = std::map<std::wstring, std::vector<HANDLE>>;
// Basic implementation of a singleton which calls the destructor // when the exe is shutting down or the DLL is being unloaded. template <typename Derived> class SingletonBase { public: static Derived* GetInstance() { static Derived* instance = nullptr;
if (!instance) {
instance = new Derived(); // Microsoft CRT extension. In an exe this this called after // winmain returns, in a dll is called in DLL_PROCESS_DETACH
_onexit(OnExit);
} return instance;
}
private: // this is the function that gets called by the CRT when the // process is shutting down. static int __cdecl OnExit() { delete GetInstance(); return0;
}
};
// Convert a short path (C:\path~1 or \\??\\c:\path~1) to the long version of // the path. If the path is not a valid filesystem path, the function returns // false and argument is not modified. // - If passing in a short native device path (\Device\HarddiskVolumeX\path~1), // a drive letter string (c:\) must also be provided. bool ConvertToLongPath(std::wstring* path, const std::wstring* drive_letter = nullptr);
// Returns ERROR_SUCCESS if the path contains a reparse point, // ERROR_NOT_A_REPARSE_POINT if there's no reparse point in this path, or an // error code when the function fails. // This function is not smart. It looks for each element in the path and // returns true if any of them is a reparse point.
DWORD IsReparsePoint(const std::wstring& full_path);
// Returns true if the handle corresponds to the object pointed by this path. bool SameObject(HANDLE handle, constwchar_t* full_path);
// Resolves a handle to an nt path or nullopt if the path cannot be resolved.
absl::optional<std::wstring> GetPathFromHandle(HANDLE handle);
// Resolves a win32 path to an nt path using GetPathFromHandle. The path must // exist. Returns the path if the translation was successful.
absl::optional<std::wstring> GetNtPathFromWin32Path(const std::wstring& path);
// Resolves a handle to its type name. Returns the typename if successful.
absl::optional<std::wstring> GetTypeNameFromHandle(HANDLE handle);
// Resolves a user-readable registry path to a system-readable registry path. // For example, HKEY_LOCAL_MACHINE\\Software\\microsoft is translated to // \\registry\\machine\\software\\microsoft. Returns nullopt if the path // cannot be resolved.
absl::optional<std::wstring> ResolveRegistryName(std::wstring name);
// Allocates |buffer_bytes| in child (PAGE_READWRITE) and copies data // from |local_buffer| in this process into |child|. |remote_buffer| // contains the address in the chile. If a zero byte copy is // requested |true| is returned and no allocation or copying is // attempted. Returns false if allocation or copying fails. If // copying fails, the allocation will be reversed. bool CopyToChildMemory(HANDLE child, constvoid* local_buffer,
size_t buffer_bytes, void** remote_buffer);
// Returns true if the provided path points to a pipe. bool IsPipe(const std::wstring& path);
// Converts a NTSTATUS code to a Win32 error code.
DWORD GetLastErrorFromNtStatus(NTSTATUS status);
// Returns the address of the main exe module in memory taking in account // address space layout randomization. This uses the process' PEB to extract // the base address. This should only be called on new, suspended processes. void* GetProcessBaseAddress(HANDLE process);
// Returns a map of handles open in the current process. The map is keyed by the // kernel object type name. If querying the handles fails an empty optional // value is returned. Note that unless all threads are suspended in the process // the valid handles could change between the return of the list and when you // use them.
absl::optional<ProcessHandleMap> GetCurrentProcessHandles();
} // namespace sandbox
// Resolves a function name in NTDLL to a function pointer. The second parameter // is a pointer to the function pointer. void ResolveNTFunctionPtr(const char* name, void* ptr);
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