commit d7383472273a92b1f02d145be315634894595162
Author: XOF <xofine@noreply.localhost>
Date:   Tue Dec 30 02:51:16 2025 +0800

    添加 main.go

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..788fcdc
--- /dev/null
+++ b/main.go
@@ -0,0 +1,219 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	// 数据源 URL
+	urlChnrouteIPv4   = "https://raw.githubusercontent.com/mayaxcn/china-ip-list/master/chnroute.txt"
+	urlChnrouteIPv6   = "https://raw.githubusercontent.com/mayaxcn/china-ip-list/master/chnroute_v6.txt"
+	
+	// 缓存时间（1小时）
+	cacheDuration = 1 * time.Hour
+)
+
+// 缓存结构
+type Cache struct {
+	data      string
+	timestamp time.Time
+	mu        sync.RWMutex
+}
+
+var (
+	cacheIPv4 = &Cache{}
+	cacheIPv6 = &Cache{}
+)
+
+// 从 URL 获取数据
+func fetchData(url string) (string, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", fmt.Errorf("fetch error: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("HTTP %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", fmt.Errorf("read error: %w", err)
+	}
+
+	return string(body), nil
+}
+
+// 转换为 RouterOS RSC 格式
+func convertToRSC(cidrList string, listName string, ipVersion string) string {
+	var sb strings.Builder
+	scanner := bufio.NewScanner(strings.NewReader(cidrList))
+	
+	// 添加头部注释
+	sb.WriteString(fmt.Sprintf("# China IP List - RouterOS Script\n"))
+	sb.WriteString(fmt.Sprintf("# Generated: %s\n", time.Now().Format("2006-01-02 15:04:05")))
+	sb.WriteString(fmt.Sprintf("# Source: https://github.com/mayaxcn/china-ip-list\n\n"))
+	
+	// 根据 IP 版本选择命令前缀
+	prefix := "/ip firewall address-list"
+	if ipVersion == "6" {
+		prefix = "/ipv6 firewall address-list"
+	}
+	
+	count := 0
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		sb.WriteString(fmt.Sprintf("%s add list=%s address=%s\n", prefix, listName, line))
+		count++
+	}
+	
+	sb.WriteString(fmt.Sprintf("\n# Total: %d entries\n", count))
+	return sb.String()
+}
+
+// 获取或更新缓存
+func getOrUpdateCache(cache *Cache, url string, listName string, ipVersion string) (string, error) {
+	cache.mu.RLock()
+	if time.Since(cache.timestamp) < cacheDuration && cache.data != "" {
+		defer cache.mu.RUnlock()
+		return cache.data, nil
+	}
+	cache.mu.RUnlock()
+
+	// 需要更新缓存
+	cache.mu.Lock()
+	defer cache.mu.Unlock()
+
+	// 双重检查
+	if time.Since(cache.timestamp) < cacheDuration && cache.data != "" {
+		return cache.data, nil
+	}
+
+	log.Printf("Fetching data from %s...", url)
+	cidrData, err := fetchData(url)
+	if err != nil {
+		return "", err
+	}
+
+	rscData := convertToRSC(cidrData, listName, ipVersion)
+	cache.data = rscData
+	cache.timestamp = time.Now()
+
+	log.Printf("Cache updated: %d bytes", len(rscData))
+	return rscData, nil
+}
+
+// HTTP 处理器
+func handleIPv4(w http.ResponseWriter, r *http.Request) {
+	data, err := getOrUpdateCache(cacheIPv4, urlChnrouteIPv4, "chnroute", "4")
+	if err != nil {
+		http.Error(w, fmt.Sprintf("Error: %v", err), http.StatusInternalServerError)
+		log.Printf("IPv4 error: %v", err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Header().Set("Content-Disposition", "attachment; filename=chnroute.rsc")
+	w.Write([]byte(data))
+	log.Printf("IPv4 request served: %s", r.RemoteAddr)
+}
+
+func handleIPv6(w http.ResponseWriter, r *http.Request) {
+	data, err := getOrUpdateCache(cacheIPv6, urlChnrouteIPv6, "chnroute6", "6")
+	if err != nil {
+		http.Error(w, fmt.Sprintf("Error: %v", err), http.StatusInternalServerError)
+		log.Printf("IPv6 error: %v", err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Header().Set("Content-Disposition", "attachment; filename=chnroute_v6.rsc")
+	w.Write([]byte(data))
+	log.Printf("IPv6 request served: %s", r.RemoteAddr)
+}
+
+func handleHealth(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	fmt.Fprintf(w, `{"status":"ok","cache_age_ipv4":"%s","cache_age_ipv6":"%s"}`,
+		time.Since(cacheIPv4.timestamp).Round(time.Second),
+		time.Since(cacheIPv6.timestamp).Round(time.Second))
+}
+
+func handleRoot(w http.ResponseWriter, r *http.Request) {
+	html := `<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <title>CHNRoute RSC 服务</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 800px; margin: 50px auto; padding: 20px; }
+        h1 { color: #333; }
+        code { background: #f4f4f4; padding: 2px 6px; border-radius: 3px; }
+        pre { background: #f4f4f4; padding: 15px; border-radius: 5px; overflow-x: auto; }
+        .link { margin: 10px 0; }
+    </style>
+</head>
+<body>
+    <h1>🇨🇳 CHNRoute RSC 转换服务</h1>
+    <p>自动从 <a href="https://github.com/mayaxcn/china-ip-list">mayaxcn/china-ip-list</a> 获取最新数据并转换为 RouterOS 格式</p>
+    
+    <h2>📥 下载地址</h2>
+    <div class="link">
+        <strong>IPv4:</strong> <a href="/chnroute.rsc">/chnroute.rsc</a>
+    </div>
+    <div class="link">
+        <strong>IPv6:</strong> <a href="/chnroute_v6.rsc">/chnroute_v6.rsc</a>
+    </div>
+
+    <h2>🔧 RouterOS 使用方法</h2>
+    <pre>/tool fetch url="http://你的服务器IP:8080/chnroute.rsc" mode=http
+/import chnroute.rsc
+/ip firewall address-list print count-only where list=chnroute</pre>
+
+    <h2>♻️ 更新策略</h2>
+    <ul>
+        <li>缓存时间：1 小时</li>
+        <li>上游更新：每小时</li>
+        <li>自动刷新缓存</li>
+    </ul>
+
+    <h2>📊 健康检查</h2>
+    <div class="link"><a href="/health">/health</a></div>
+</body>
+</html>`
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Write([]byte(html))
+}
+
+func main() {
+	// 启动时预热缓存
+	go func() {
+		log.Println("Warming up cache...")
+		getOrUpdateCache(cacheIPv4, urlChnrouteIPv4, "chnroute", "4")
+		getOrUpdateCache(cacheIPv6, urlChnrouteIPv6, "chnroute6", "6")
+		log.Println("Cache warmed up")
+	}()
+
+	// 路由
+	http.HandleFunc("/", handleRoot)
+	http.HandleFunc("/chnroute.rsc", handleIPv4)
+	http.HandleFunc("/chnroute_v6.rsc", handleIPv6)
+	http.HandleFunc("/health", handleHealth)
+
+	port := ":8080"
+	log.Printf("🚀 Server starting on http://0.0.0.0%s", port)
+	if err := http.ListenAndServe(port, nil); err != nil {
+		log.Fatal(err)
+	}
+}