Function install_internal

source/hook_manager.cpp:79–134

}

static bool install_internal(const char *name, reshade::hook &hook, hook_method method)
{
	// It does not make sense to install a hook which points to itself, so avoid that
	if (hook.target == hook.replacement)
		return false;

#if RESHADE_VERBOSE_LOG
	reshade::log::message(reshade::log::level::debug, "Installing hook for %s at %p with %p using method %d ...", name, hook.target, hook.replacement, static_cast<int>(method));
#endif
	auto status = reshade::hook::status::unknown;

	switch (method)
	{
	case hook_method::export_hook:
		// Export functions are always called directly
		status = reshade::hook::status::success;
		break;
	case hook_method::function_hook:
		status = hook.install();
		break;
	case hook_method::vtable_hook:
		// Make virtual function table memory writable before modifying it
		if (DWORD protection = PAGE_READWRITE;
			VirtualProtect(hook.target, sizeof(reshade::hook::address), protection, &protection))
		{
			// Replace entry in virtual function table with the replacement function
			*reinterpret_cast<reshade::hook::address *>(hook.target) = hook.replacement;

			VirtualProtect(hook.target, sizeof(reshade::hook::address), protection, &protection);

			status = reshade::hook::status::success;
		}
		else
		{
			status = reshade::hook::status::memory_protection_failure;
		}
		break;
	}

	if (status != reshade::hook::status::success)
	{
		reshade::log::message(reshade::log::level::error, "Failed to install hook for %s with status code %d!", name, static_cast<int>(status));
		return false;
	}

	// Protect access to hook list with a mutex
	{ const std::unique_lock<std::shared_mutex> lock(s_hooks_mutex);
		s_hooks.push_back({ hook, name, method });
	}

#if RESHADE_VERBOSE_LOG
	reshade::log::message(reshade::log::level::debug, "> Succeeded.");
#endif

	return true;
}
static bool install_internal(HMODULE target_module, HMODULE replacement_module, hook_method method)
{