c_prepared_program_code_when_system.rar_MultimediaTimer_The Prog

#define WIN32_LEAN_AND_MEAN #include <windows.h> #include <stdio.h> #include <stdlib.h> #include <iostream> #include <TCHAR.H> #include <winsock.h> #pragma comment (lib,"Ws2_32") #define UNICODE #define _UNICODE #define _countof(array) (sizeof(array)/sizeof(array[0])) #define HIGHTIME 21968699 // 21968708 // Jan 1, 1900 FILETIME.highTime #define LOWTIME 4259332096 // 1604626432 // Jan 1, 1900 FILETIME.lowtime using namespace std; //NTP服务器列表 struct NISTSVR{ int key; //编号 in_addr addr; //IP地址 LPCTSTR server; //域名 LPCTSTR info; //信息 } NISTSVRSARY[] = { { 0, {0,0,0,0}, NULL, NULL}, { 1, {129,6,15,28}, _T("time-a.nist.gov"),_T("NIST，盖士堡，马里兰州") }, { 2, {129,6,15,29}, _T("time-b.nist.gov"),_T("NIST，盖士堡，马里兰州") }, { 3, {132,163,4,101}, _T("time-a.timefreq.bldrdoc.gov"),_T("NIST，博耳德市，科罗拉多州") }, { 4, {132,163,4,102}, _T("time-b.timefreq.bldrdoc.gov"),_T("NIST，博耳德市，科罗拉多州") }, { 5, {132,163,4,103}, _T("time-c.timefreq.bldrdoc.gov"),_T("NIST，博耳德市，科罗拉多州") }, { 6, {128,138,140,44}, _T("tutcnist.colorado.edu"),_T("科罗拉多大学，博耳德市") }, { 7, {192,43,244,18}, _T("time.nist.gov"),_T("NCAR，博耳德市，科罗拉多州") }, { 8, {131,107,1,10}, _T("time-nw.nist.gov"),_T("Microsoft，雷蒙德，华盛顿州") }, { 9, {208,184,49,129}, _T("nist1.nyc.certifiedtime.com"),_T("Abovnet，纽约市") }, }; //所选择的NTP服务器 static int choice = 0; void usage() { printf( "\n\t----------------------------------------------\n" ); printf( "\t=*= Time Getter v1.0 \t(qsilence@sina.com) =*=\n" ); printf( "\t----------------------------------------------\n\n" ); int l = _countof(NISTSVRSARY); for (int i= 1; i< l; i++){ printf(" %d. %s [%s] %s \r\n", NISTSVRSARY[i].key, NISTSVRSARY[i].server, inet_ntoa(NISTSVRSARY[i].addr), NISTSVRSARY[i].info); } } BOOL UpdateSysTime(DWORD dwTime) { UINT64 uiCurTime, uiBaseTime, uiResult; SYSTEMTIME st; uiBaseTime = ((UINT64) HIGHTIME << 32) + LOWTIME; uiCurTime = (UINT64)dwTime * (UINT64)10000000; uiResult = uiBaseTime + uiCurTime; FileTimeToSystemTime((LPFILETIME)&uiResult, &st); return SetSystemTime(&st); } BOOL GetTimeFromServer(DWORD *lpdwTime) { *lpdwTime = 0; BOOL bReturn= FALSE; SOCKET sSock = socket(AF_INET, SOCK_STREAM, 0); if(INVALID_SOCKET != sSock) { struct sockaddr_in sin; memcpy(&sin.sin_addr, &NISTSVRSARY[choice].addr, sizeof(in_addr)); sin.sin_family = AF_INET; sin.sin_port = htons(IPPORT_TIMESERVER); printf( "\n ...Waiting Connection...\n"); if(0 == connect(sSock, (struct sockaddr *) &sin, sizeof(struct sockaddr_in))) { printf( " ***Connected***\n"); int iResult, iRead; for(iRead = 0; iRead < 4; iRead += iResult) { iResult = recv(sSock, (char*)lpdwTime + iRead, 4 - iRead, 0); if(iResult < 1) break; } if(4 == iRead) { *lpdwTime = ntohl(*lpdwTime); bReturn = TRUE; }else printf( " Error getting time!\n"); }else printf( " ***Connection Failed***\n"); closesocket(sSock); } return bReturn; } int main(int argc,char *argv[]) { WSADATA WSAData; if(WSAStartup (MAKEWORD(1,1), &WSAData) != 0) { printf("WSAStartup failed.\n"); WSACleanup(); exit(1); } if(argc<2) { usage(); while (choice <= 0 || choice > 9) cin>>choice; }else choice = atoi(&argv[1][strlen(argv[1])-1]); DWORD dwTime; //取服务器时间 if (GetTimeFromServer(&dwTime)) { //更新系统时间 if (UpdateSysTime(dwTime)) { printf( " ***System Clock Successfully Updated***\n"); }else{ printf( " ***Error setting the System Clock***\n"); } } WSACleanup(); return 0; }