//SNTP協議，用于時間同步
//Download?by?http://www.codefans.net
#pragma?comment（lib“ws2_32.lib“）
#ifndef?WIN32
#include?
#else
#include?
#endif
#include?
#include?
//#include?“common.h“

#ifdef?WIN32

#include?
#define?socklen_t?unsigned?long
#define?close?closesocket
#define?tz?1
#define?__PACKED_ALIGN__
#pragma?pack（1）

BOOL?EnableSetTimePriviledge（）
{
??HANDLE?hToken;
??TOKEN_PRIVILEGES?tokenPriv;
??if（?OpenProcessToken（GetCurrentProcess（）?TOKEN_ADJUST_PRIVILEGES?|?TOKEN_QUERY?&hToken）?==?FALSE?）
??{
????if?（GetLastError（）?==?ERROR_CALL_NOT_IMPLEMENTED）?
????{
??????//?Must?be?running?on?95?or?98?not?NT.?In?that?case?just?ignore?the?error
??????SetLastError（ERROR_SUCCESS）;
??????return?TRUE;
????}
????printf（“Failed?to?get?Adjust?priviledge?token\n“）;
????return?FALSE;
??}
??memset（&tokenPriv?0?sizeof（TOKEN_PRIVILEGES））;
??if?（!LookupPrivilegeValue（NULL?SE_SYSTEMTIME_NAME?&tokenPriv.Privileges[0].Luid））
??{
????printf（“Failed?in?callup?to?lookup?priviledge\n“）;
????return?FALSE;
??}
??tokenPriv.PrivilegeCount?=?1;
??tokenPriv.Privileges[0].Attributes?|=?SE_PRIVILEGE_ENABLED;

??if（?AdjustTokenPrivileges（hToken?FALSE?&tokenPriv?0?NULL?0）?==?FALSE?）
??{
????printf（“Failed?to?adjust?SetTime?priviledge\n“）;
	return?FALSE;
??}?else?{
	printf（“Set?Privileges?OK\r\n“）;
	return?TRUE;
??}
}

#else

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#define?WM_USER?0
#define?WINAPI
#define?__PACKED_ALIGN__	__attribute__（（packed））

#endif
int?g_bRunning;
#define?SNTP_DBG
#define?MSG_SNTP_QUIT			????????（WM_USER+100）?/*?退出SNTP?線程?*/
#define?MSG_SNTP_SERVER		????????????（WM_USER+101）?/*?設置SNTP?服務器地址*/
#define?MSG_SNTP_MODE			????????（WM_USER+102）?/*?設置SNTP?模式?*/

typedef?struct?NTP_TIME_FMT
{
	time_t?seconds;
	time_t?fractional;
}?__PACKED_ALIGN__?NTP_TIME_FMT;

typedef?struct?NTP_PKT_base
{
??unsigned?char?liVnMode;?/*?LeapSecond（2bits:0）?VersionNumber（3bits:?3）?Mode（3bits:?Client=3?Server=4）?*/
??unsigned?char?stratum;?/*?時間層級?（0-15）?*/
??unsigned?char?poll;?/*?表示連續信息間的最大間隔，8?bits，以2的x次冪秒的形式表示。實際填0即可?*/
??unsigned?char?precision;?/*?時間精度，以2的負x次冪秒表示，8?bits。服務器返回時會填寫實際精度?*/
??unsigned?long?rootDelay;?/*?到主參考時間源的往返總延遲。32?bits固定小數點數，小數點在bit?15和bit?16之間?*/
??unsigned?long?rootDispersion;?/*?相對于主參考時間源的正常離差。32?bits固定小數點數，小數點在bit?15和bit?16之間?*/
??char?referenceID[4];?/*?用于識別特殊的參考源?*/
??NTP_TIME_FMT?referenceTimestamp;?/*?本地時中最后一次設置或修正時的時間，64bits，timestamp格式?*/
??NTP_TIME_FMT?originateTimestamp;?/*?客戶端發送請求的時間?*/
??NTP_TIME_FMT?receiveTimestamp;?/*?服務器接收到請求的時間?*/
??NTP_TIME_FMT?transmitTimestamp;?/*?服務器發送響應的時間?*/
}?__PACKED_ALIGN__?NTP_PKT_base;

//The?optional?part?of?an?NTP?packet
typedef?struct?NTP_PKT_AUTHINFO
{
??unsigned?long?keyID;
??unsigned?char?messageDigest[128];
}?__PACKED_ALIGN_