Improvement: Add serial number generate menu
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yuanyuanxiang
173
server/2015Remote/DateVerify.h
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173
server/2015Remote/DateVerify.h
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#pragma once
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#include <iostream>
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#include <ctime>
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#include <WinSock2.h>
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#include <Windows.h>
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#pragma comment(lib, "ws2_32.lib")
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// <20>й<EFBFBD><D0B9><EFBFBD>½<EFBFBD>Ż<EFBFBD><C5BB><EFBFBD>NTP<54><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD>
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const char* CN_NTP_SERVERS[] = {
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"ntp.aliyun.com",
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"time1.aliyun.com",
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"ntp1.tencent.com",
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"time.edu.cn",
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"ntp.tuna.tsinghua.edu.cn",
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"cn.ntp.org.cn",
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};
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const int CN_NTP_COUNT = sizeof(CN_NTP_SERVERS) / sizeof(CN_NTP_SERVERS[0]);
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const int NTP_PORT = 123;
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const uint64_t NTP_EPOCH_OFFSET = 2208988800ULL;
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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class DateVerify
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{
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private:
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// <20><>ʼ<EFBFBD><CABC>Winsock
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bool initWinsock() {
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WSADATA wsaData;
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return WSAStartup(MAKEWORD(2, 2), &wsaData) == 0;
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}
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// <20><>ָ<EFBFBD><D6B8>NTP<54><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡʱ<C8A1><CAB1>
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time_t getTimeFromServer(const char* server) {
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SOCKET sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (sock == INVALID_SOCKET) return 0;
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sockaddr_in serverAddr{};
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serverAddr.sin_family = AF_INET;
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serverAddr.sin_port = htons(NTP_PORT);
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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hostent* host = gethostbyname(server);
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if (!host) {
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closesocket(sock);
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return 0;
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}
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serverAddr.sin_addr.s_addr = *((unsigned long*)host->h_addr_list[0]);
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// <20><><EFBFBD>ó<EFBFBD>ʱ
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DWORD timeout = 2000; // 2<>볬ʱ
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setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout, sizeof(timeout));
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// <><D7BC>NTP<54><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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char ntpPacket[48] = { 0 };
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ntpPacket[0] = 0x1B; // LI=0, VN=3, Mode=3
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if (sendto(sock, ntpPacket, sizeof(ntpPacket), 0,
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(sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
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closesocket(sock);
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return 0;
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ
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if (recv(sock, ntpPacket, sizeof(ntpPacket), 0) <= 0) {
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closesocket(sock);
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return 0;
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}
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closesocket(sock);
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// <20><><EFBFBD><EFBFBD>NTPʱ<50><CAB1>
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uint32_t ntpTime = ntohl(*((uint32_t*)(ntpPacket + 40)));
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return ntpTime - NTP_EPOCH_OFFSET;
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}
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// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ʱ<EFBFBD>䣨<EFBFBD><E4A3A8><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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time_t getNetworkTimeInChina() {
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if (!initWinsock()) return 0;
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time_t result = 0;
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for (int i = 0; i < CN_NTP_COUNT && result == 0; i++) {
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result = getTimeFromServer(CN_NTP_SERVERS[i]);
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if (result != 0) {
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break;
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}
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}
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WSACleanup();
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return result;
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}
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// <20><><EFBFBD>·<EFBFBD><C2B7><EFBFBD>дת<D0B4><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>(1-12)
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int monthAbbrevToNumber(const std::string& month) {
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static const std::map<std::string, int> months = {
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{"Jan", 1}, {"Feb", 2}, {"Mar", 3}, {"Apr", 4},
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{"May", 5}, {"Jun", 6}, {"Jul", 7}, {"Aug", 8},
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{"Sep", 9}, {"Oct", 10}, {"Nov", 11}, {"Dec", 12}
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};
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auto it = months.find(month);
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return (it != months.end()) ? it->second : 0;
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}
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// <20><><EFBFBD><EFBFBD>__DATE__<5F>ַ<EFBFBD><D6B7><EFBFBD>Ϊtm<74>ṹ
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tm parseCompileDate(const char* compileDate) {
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tm tmCompile = { 0 };
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std::string monthStr(compileDate, 3);
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std::string dayStr(compileDate + 4, 2);
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std::string yearStr(compileDate + 7, 4);
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tmCompile.tm_year = std::stoi(yearStr) - 1900;
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tmCompile.tm_mon = monthAbbrevToNumber(monthStr) - 1;
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tmCompile.tm_mday = std::stoi(dayStr);
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return tmCompile;
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int daysBetweenDates(const tm& date1, const tm& date2) {
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auto timeToTimePoint = [](const tm& tmTime) {
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std::time_t tt = mktime(const_cast<tm*>(&tmTime));
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return std::chrono::system_clock::from_time_t(tt);
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};
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auto tp1 = timeToTimePoint(date1);
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auto tp2 = timeToTimePoint(date2);
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auto duration = tp1 > tp2 ? tp1 - tp2 : tp2 - tp1;
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return std::chrono::duration_cast<std::chrono::hours>(duration).count() / 24;
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}
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// <20><>ȡ<EFBFBD><C8A1>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>
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tm getCurrentDate() {
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std::time_t now = std::time(nullptr);
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tm tmNow = *std::localtime(&now);
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tmNow.tm_hour = 0;
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tmNow.tm_min = 0;
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tmNow.tm_sec = 0;
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return tmNow;
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}
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// <20><>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD>
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bool isLocalDateModified() {
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time_t networkTime = getNetworkTimeInChina();
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if (networkTime == 0) {
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return true; // <20><EFBFBD><DEB7><EFBFBD>֤
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}
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time_t localTime = time(nullptr);
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double diffDays = difftime(networkTime, localTime) / 86400.0;
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EEA3A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳٺ<D3B3>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD>
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if (fabs(diffDays) > 1.0) {
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return true;
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}
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return false;
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}
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public:
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bool isTrail(int trailDays=7) {
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if (isLocalDateModified())
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return false;
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tm tmCompile = parseCompileDate(__DATE__), tmCurrent = getCurrentDate();
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int daysDiff = daysBetweenDates(tmCompile, tmCurrent);
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return daysDiff <= trailDays;
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}
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};
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