#include "..\include_eapi_header.h"
#include<Winternl.h>
#include<string>
#pragma comment(lib,"Ntdll.lib")
using namespace std;


extern "C" {
	NTSTATUS WINAPI RtlGetVersion(_Out_ PRTL_OSVERSIONINFOW lpVersionInformation);
	void WINAPI RtlGetNtVersionNumbers(DWORD* dwMajor, DWORD* dwMinor, DWORD* dwBuildNumber);
}


static char* GetWin()
{
	const char* vname = "Unknown Windows version";
	OSVERSIONINFOW WinVersion = {};
	WinVersion.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
	PRTL_OSVERSIONINFOW lpOSVI = (PRTL_OSVERSIONINFOW)&WinVersion;
	RtlGetVersion(lpOSVI);
	if (WinVersion.dwBuildNumber >= 22000)
	{
		vname = "Microsoft Windows 11";
		return CloneTextData(vname);
	}
	//先判断是否为win8.1或win10
	DWORD dwMajor, dwMinor, dwBuildNumber;
	RtlGetNtVersionNumbers(&dwMajor, &dwMinor, &dwBuildNumber);

	if (dwMajor == 6 && dwMinor == 3)	//win 8.1
	{
		vname = "Microsoft Windows 8.1";
		return CloneTextData(vname);
	}
	if (dwMajor == 10 && dwMinor == 0)	//win 10
	{
		vname = "Microsoft Windows 10";
		return CloneTextData(vname);
	}


	//判断win8.1以下的版本
	SYSTEM_INFO info; //用SYSTEM_INFO结构判断64位AMD处理器 
	GetSystemInfo(&info); //调用GetSystemInfo函数填充结构 
	OSVERSIONINFOEXW os;
	os.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
	BOOL bOsVersionInfoEx;
	if (!(bOsVersionInfoEx = RtlGetVersion((OSVERSIONINFOW*)&os)))
	{
		os.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
		RtlGetVersion((OSVERSIONINFOW*)&os);
	}
	//下面根据版本信息判断操作系统名称 
	switch (os.dwMajorVersion)
	{ //判断主版本号 
	case 4:
		switch (os.dwMinorVersion)
		{ //判断次版本号 
		case 0:
			if (os.dwPlatformId == VER_PLATFORM_WIN32_NT)
				vname = "Microsoft Windows NT 4.0"; //1996年7月发布 
			else if (os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
				vname = "Microsoft Windows 95";
			break;
		case 10:
			vname = "Microsoft Windows 98";
			break;
		case 90:
			vname = "Microsoft Windows Me";
			break;
		}
		break;
	case 5:
		switch (os.dwMinorVersion)
		{ //再比较dwMinorVersion的值 
		case 0:
			vname = "Microsoft Windows 2000"; //1999年12月发布 
			break;
		case 1:
			vname = "Microsoft Windows XP"; //2001年8月发布 
			break;
		case 2:
			if (os.wProductType == VER_NT_WORKSTATION &&
				info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
				vname = "Microsoft Windows XP Professional x64 Edition";
			else if (GetSystemMetrics(SM_SERVERR2) == 0)
				vname = "Microsoft Windows Server 2003"; //2003年3月发布 
			else if (GetSystemMetrics(SM_SERVERR2) != 0)
				vname = "Microsoft Windows Server 2003 R2";
			break;
		}
		break;
	case 6:
		switch (os.dwMinorVersion)
		{
		case 0:
			if (os.wProductType == VER_NT_WORKSTATION)
				vname = "Microsoft Windows Vista";
			else
				vname = "Microsoft Windows Server 2008"; //服务器版本 
			break;
		case 1:
			if (os.wProductType == VER_NT_WORKSTATION)
				vname = "Microsoft Windows 7";
			else
				vname = "Microsoft Windows Server 2008 R2";
			break;
		case 2:
			if (os.wProductType == VER_NT_WORKSTATION)
				vname = "Microsoft Windows 8";
			else
				vname = "Microsoft Windows Server 2012";
			break;
		}
		break;
	default:
		vname = "未知操作系统";
	}
	return CloneTextData(vname);
}


typedef struct _ESYSINFO
{
	char* m_WinSys;
	char* m_Vsion;
	int m_BuildVsion;
	char* m_LastPack;
	char* m_User;
	char* m_WinDir;
	char* m_SysDir;
	//语言代码
	int m_Code;
	char* m_LocalLanguage;
	//非标准国家代码,为电话代码
	int m_PhoneCode;
	//官方名称
	char* m_CountryName;
	char* m_Money;
	char* m_DataFormat;
	char* m_TimeFormat;
	char* m_TimeZone;
	char* m_Iso;
	bool m_IsSysx64;
	_ESYSINFO() {
		memset(this, 0, sizeof(*this));
	}
}*PESYSINFO;



inline void GetSysInfo(PESYSINFO pSysInfo) {
	//取系统版本
	pSysInfo->m_WinSys = GetWin();
	//系统用户名
	char currentUser[256]{ 0 };
	DWORD dwSize_currentUser = 256;
	GetUserNameA(
		currentUser,			// 接收当前登录用户的用户名
		&dwSize_currentUser		// 缓冲区大小
	);
	pSysInfo->m_User = CloneTextData(currentUser);
	//是否为64位
	SYSTEM_INFO INFO;
	GetNativeSystemInfo(&INFO);
	pSysInfo->m_IsSysx64 = INFO.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_IA64 || INFO.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64;
	OSVERSIONINFOEXW osvi;
	osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
	BOOL bOsVersionInfoEx;
	if (!(bOsVersionInfoEx = RtlGetVersion((OSVERSIONINFOW*)&osvi)))
	{
		osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
		RtlGetVersion((OSVERSIONINFOW*)&osvi);
	}
	//系统版本
	pSysInfo->m_Vsion = CloneTextData(to_string(osvi.dwMajorVersion + osvi.dwMinorVersion * 0.1f).c_str());
	//最后服务包
	pSysInfo->m_LastPack = CloneTextData(to_string(osvi.wServicePackMajor + osvi.wServicePackMinor * 0.1).c_str());
	//构建版本
	pSysInfo->m_BuildVsion = osvi.dwBuildNumber;;
	//windows目录
	char* str = nullptr;
	UINT wsize = GetWindowsDirectoryA(NULL, 0);
	char* wpath = new char[wsize] {0};
	if (GetWindowsDirectoryA(wpath, wsize) != 0) //函数调用失败将返回0
	{
		str = CloneTextData(wpath);
	}
	delete[] wpath;
	pSysInfo->m_WinDir = str;
	//系统目录
	char* wstr = nullptr;
	UINT size = GetSystemDirectoryA(NULL, 0);
	char* path = new char[size] {0};
	if (GetSystemDirectoryA(path, size) != 0) //函数调用失败将返回0
	{
		wstr = CloneTextData(path);
	}
	delete[] path;
	pSysInfo->m_SysDir = wstr;


	/*下方全部为本地数据的获取*/
	LCID localeID = GetSystemDefaultLCID();
	//国家代码
	pSysInfo->m_Code = GetOEMCP();
	//本地语言
	CHAR Language[260]{ 0 };
	if (VerLanguageNameA(GetSystemDefaultLangID(), Language, 260) <= 260) {
		pSysInfo->m_LocalLanguage = CloneTextData(Language);
	}
	//ISO
	GEOID myGEO = GetUserGeoID(GEOCLASS_NATION);
	int sizeOfBuffer = GetGeoInfoW(myGEO, GEO_ISO2, NULL, 0, 0);
	WCHAR* buffer = new WCHAR[sizeOfBuffer + 1];
	memset(buffer, 0, (sizeOfBuffer + 1) * sizeof(wchar_t));
	int result = GetGeoInfoW(myGEO, GEO_ISO2, buffer, sizeOfBuffer, 0);
	pSysInfo->m_Iso = clone_text(buffer);
	delete[]buffer;
	//货币符号
	CHAR money[7]{ 0 };
	GetLocaleInfoA(localeID, LOCALE_SCURRENCY, money, 7);
	pSysInfo->m_Money = CloneTextData(money);
	//手机
	CHAR LCData[7]{ 0 };
	GetLocaleInfoA(localeID, LOCALE_IDIALINGCODE, LCData, 7);
	pSysInfo->m_PhoneCode = atoi(LCData);
	//国家
	CHAR contury[260]{ 0 };
	GetLocaleInfoA(localeID, LOCALE_SENGLISHCOUNTRYNAME, contury, 260);
	pSysInfo->m_CountryName = CloneTextData(contury);
	//时区
	TIME_ZONE_INFORMATION m_timezone;
	GetTimeZoneInformation(&m_timezone);
	pSysInfo->m_TimeZone = clone_text(m_timezone.StandardName);
	//日期格式
	CHAR DataFormat[100]{ 0 };
	GetLocaleInfoA(localeID, LOCALE_SLONGDATE, DataFormat, 100);
	pSysInfo->m_DataFormat = CloneTextData(DataFormat);
	//时间格式
	CHAR TimeFormat[100]{ 0 };
	GetLocaleInfoA(localeID, LOCALE_STIMEFORMAT, TimeFormat, 100);
	pSysInfo->m_TimeFormat = CloneTextData(TimeFormat);

}











// 调用格式: _SDT_NULL 取系统信息, 命令说明: "取系统信息。"
// 参数<1>: &系统信息 MAKELONG(0x04, 0), 参数说明: "待取得的系统信息。"
EAPI_EXTERN_C void eapi_GetSystemInfo_14_eapi(PMDATA_INF pRetData, INT nArgCount, PMDATA_INF pArgInf)
{
	PESYSINFO pHDInfo = *reinterpret_cast<PESYSINFO*>(pArgInf[0].m_pCompoundData);
	GetSysInfo(pHDInfo);
}