Init: Migrate SimpleRemoter (Since v1.3.1) to Gitea

2026-04-19 19:55:01 +02:00
commit 5a325a202b
744 changed files with 235562 additions and 0 deletions
--- a/common/DateVerify.h
+++ b/common/DateVerify.h
@@ -0,0 +1,238 @@
+#pragma once
+
+#include <iostream>
+#include <ctime>
+#include <map>
+#include <chrono>
+#include <cmath>
+#include <WinSock2.h>
+#include <Windows.h>
+#pragma comment(lib, "ws2_32.lib")
+
+// NTP服务器列表（按客户端优先级：中国50%+ > 港澳台20% > 日新5% > 其他）
+static const char* NTP_SERVERS[] = {
+    // 中国大陆 (50%+)
+    "ntp.aliyun.com",           // 阿里云，国内最快
+    "ntp1.tencent.com",         // 腾讯云
+    "ntp.tuna.tsinghua.edu.cn", // 清华大学 TUNA
+    "cn.pool.ntp.org",          // 中国 NTP 池
+    // 亚太区域 (香港20% + 日本/新加坡5%)
+    "time.asia.apple.com",      // Apple 亚太节点
+    "time.google.com",          // Google 亚太有节点
+    "hk.pool.ntp.org",          // 香港 NTP 池
+    "jp.pool.ntp.org",          // 日本 NTP 池
+    "sg.pool.ntp.org",          // 新加坡 NTP 池
+    // 全球兜底 (~20%其他地区)
+    "pool.ntp.org",             // 全球 NTP 池
+    "time.cloudflare.com",      // Cloudflare 全球 Anycast
+};
+static const int NTP_SERVER_COUNT = sizeof(NTP_SERVERS) / sizeof(NTP_SERVERS[0]);
+static const int NTP_PORT = 123;
+static const uint64_t NTP_EPOCH_OFFSET = 2208988800ULL;
+
+// 检测程序是否处于试用期
+class DateVerify
+{
+private:
+    bool m_hasVerified = false;
+    bool m_lastTimeTampered = true;  // 上次检测结果：true=被篡改
+    time_t m_lastVerifyLocalTime = 0;
+    time_t m_lastNetworkTime = 0;
+    static const int VERIFY_INTERVAL = 6 * 3600;  // 6小时
+
+    // 初始化Winsock
+    bool initWinsock()
+    {
+        WSADATA wsaData;
+        return WSAStartup(MAKEWORD(2, 2), &wsaData) == 0;
+    }
+
+    // 从指定NTP服务器获取时间
+    time_t getTimeFromServer(const char* server)
+    {
+        SOCKET sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+        if (sock == INVALID_SOCKET) return 0;
+
+        sockaddr_in serverAddr{};
+        serverAddr.sin_family = AF_INET;
+        serverAddr.sin_port = htons(NTP_PORT);
+
+        // 解析主机名
+        hostent* host = gethostbyname(server);
+        if (!host) {
+            closesocket(sock);
+            return 0;
+        }
+        serverAddr.sin_addr.s_addr = *((unsigned long*)host->h_addr_list[0]);
+
+        // 设置超时
+        DWORD timeout = 2000; // 2秒超时
+        setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout, sizeof(timeout));
+
+        // 准备NTP请求包
+        char ntpPacket[48] = { 0 };
+        ntpPacket[0] = 0x1B; // LI=0, VN=3, Mode=3
+
+        // 发送请求
+        if (sendto(sock, ntpPacket, sizeof(ntpPacket), 0,
+                   (sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
+            closesocket(sock);
+            return 0;
+        }
+
+        // 接收响应
+        if (recv(sock, ntpPacket, sizeof(ntpPacket), 0) <= 0) {
+            closesocket(sock);
+            return 0;
+        }
+
+        closesocket(sock);
+
+        // 解析NTP时间
+        uint32_t ntpTime = ntohl(*((uint32_t*)(ntpPacket + 40)));
+        return ntpTime - NTP_EPOCH_OFFSET;
+    }
+
+    // 获取网络时间（尝试多个服务器）
+    time_t getNetworkTimeInChina()
+    {
+        if (!initWinsock()) return 0;
+
+        time_t result = 0;
+        for (int i = 0; i < NTP_SERVER_COUNT && result == 0; i++) {
+            result = getTimeFromServer(NTP_SERVERS[i]);
+            if (result != 0) {
+                break;
+            }
+        }
+
+        WSACleanup();
+        return result;
+    }
+
+    // 将月份缩写转换为数字(1-12)
+    int monthAbbrevToNumber(const std::string& month)
+    {
+        static const std::map<std::string, int> months = {
+            {"Jan", 1}, {"Feb", 2}, {"Mar", 3}, {"Apr", 4},
+            {"May", 5}, {"Jun", 6}, {"Jul", 7}, {"Aug", 8},
+            {"Sep", 9}, {"Oct", 10}, {"Nov", 11}, {"Dec", 12}
+        };
+        auto it = months.find(month);
+        return (it != months.end()) ? it->second : 0;
+    }
+
+    // 解析__DATE__字符串为tm结构
+    tm parseCompileDate(const char* compileDate)
+    {
+        tm tmCompile = { 0 };
+        std::string monthStr(compileDate, 3);
+        std::string dayStr(compileDate + 4, 2);
+        std::string yearStr(compileDate + 7, 4);
+
+        tmCompile.tm_year = std::stoi(yearStr) - 1900;
+        tmCompile.tm_mon = monthAbbrevToNumber(monthStr) - 1;
+        tmCompile.tm_mday = std::stoi(dayStr);
+
+        return tmCompile;
+    }
+
+    // 计算两个日期之间的天数差
+    int daysBetweenDates(const tm& date1, const tm& date2)
+    {
+        auto timeToTimePoint = [](const tm& tmTime) {
+            std::time_t tt = mktime(const_cast<tm*>(&tmTime));
+            return std::chrono::system_clock::from_time_t(tt);
+        };
+
+        auto tp1 = timeToTimePoint(date1);
+        auto tp2 = timeToTimePoint(date2);
+
+        auto duration = tp1 > tp2 ? tp1 - tp2 : tp2 - tp1;
+        return std::chrono::duration_cast<std::chrono::hours>(duration).count() / 24;
+    }
+
+    // 获取当前日期
+    tm getCurrentDate()
+    {
+        std::time_t now = std::time(nullptr);
+        tm tmNow = *std::localtime(&now);
+        tmNow.tm_hour = 0;
+        tmNow.tm_min = 0;
+        tmNow.tm_sec = 0;
+        return tmNow;
+    }
+
+public:
+
+    // 检测本地时间是否被篡改（用于授权验证）
+    // toleranceDays: 允许的时间偏差天数，超过此值视为篡改
+    // 返回值: true=时间被篡改或无法验证, false=时间正常
+    bool isTimeTampered(int toleranceDays = 1)
+    {
+        time_t currentLocalTime = time(nullptr);
+
+        // 检查是否可以使用缓存
+        if (m_hasVerified) {
+            time_t localElapsed = currentLocalTime - m_lastVerifyLocalTime;
+
+            // 本地时间在合理范围内前进，使用缓存推算
+            if (localElapsed >= 0 && localElapsed < VERIFY_INTERVAL) {
+                time_t estimatedNetworkTime = m_lastNetworkTime + localElapsed;
+                double diffDays = difftime(estimatedNetworkTime, currentLocalTime) / 86400.0;
+                if (fabs(diffDays) <= toleranceDays) {
+                    return false;  // 未篡改
+                }
+            }
+        }
+
+        // 执行网络验证
+        time_t networkTime = getNetworkTimeInChina();
+        if (networkTime == 0) {
+            // 网络不可用：如果之前验证通过且本地时间没异常，暂时信任
+            if (m_hasVerified && !m_lastTimeTampered) {
+                time_t localElapsed = currentLocalTime - m_lastVerifyLocalTime;
+                // 允许5分钟回拨和24小时内的前进
+                if (localElapsed >= -300 && localElapsed < 24 * 3600) {
+                    return false;
+                }
+            }
+            return false;  // 无法验证，视为篡改
+        }
+
+        // 更新缓存
+        m_hasVerified = true;
+        m_lastVerifyLocalTime = currentLocalTime;
+        m_lastNetworkTime = networkTime;
+
+        double diffDays = difftime(networkTime, currentLocalTime) / 86400.0;
+        m_lastTimeTampered = fabs(diffDays) > toleranceDays;
+
+        return m_lastTimeTampered;
+    }
+
+    // 获取网络时间与本地时间的偏差（秒）
+    // 返回值: 正数=本地时间落后, 负数=本地时间超前, 0=无法获取网络时间
+    int getTimeOffset()
+    {
+        time_t networkTime = getNetworkTimeInChina();
+        if (networkTime == 0) return 0;
+        return static_cast<int>(difftime(networkTime, time(nullptr)));
+    }
+
+    bool isTrial(int trialDays = 7)
+    {
+        if (isTimeTampered())
+            return false;
+
+        tm tmCompile = parseCompileDate(__DATE__), tmCurrent = getCurrentDate();
+
+        // 计算天数差
+        int daysDiff = daysBetweenDates(tmCompile, tmCurrent);
+
+        return daysDiff <= trialDays;
+    }
+
+    // 保留旧函数名兼容性（已弃用）
+    bool isTrail(int trailDays = 7) { return isTrial(trailDays); }
+};