refactor: 移除钉钉告警相关代码

- 删除了 main.go 中调用 warning 函数的代码行
- 移除了 warning.go 文件中的所有钉钉告警相关代码
- 保留了 warning 函数的注释，改为 warning_ding
- 删除了 denyip 文件（二进制文件差异）

warning_ding.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+	"sync"
+	"time"
+)
+
+var (
+	WarningList     = make(map[string]string) // 存储 IP 和位置的映射
+	WarningListLock = sync.RWMutex{}
+
+	dingtalkWebhook = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a" // 替换为你的 token
+)
+
+// 发送钉钉 Markdown 消息
+func sendDingTalkMessage(title, text string) {
+	if len(text) > 1900 {
+		text = text[:1900] + "\n...(内容过长，已截断)"
+	}
+
+	msg := map[string]interface{}{
+		"msgtype": "markdown",
+		"markdown": map[string]string{
+			"title": title,
+			"text":  "### Warning " + title + "\n" + text,
+		},
+	}
+
+	jsonData, err := json.Marshal(msg)
+	if err != nil {
+		log.Println("JSON 编码失败:", err)
+		return
+	}
+
+	client := &http.Client{Timeout: 5 * time.Second}
+	resp, err := client.Post(dingtalkWebhook, "application/json", bytes.NewBuffer(jsonData))
+	if err != nil {
+		log.Println("发送钉钉消息失败:", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	body, _ := io.ReadAll(resp.Body)
+	var result map[string]interface{}
+	if err := json.Unmarshal(body, &result); err != nil {
+		log.Println("解析钉钉响应失败:", err)
+		return
+	}
+
+	if result["errcode"].(float64) != 0 {
+		log.Println("钉钉返回错误:", result["errmsg"])
+	} else {
+		log.Println("钉钉告警已发送成功")
+	}
+}
+
+func warning_ding(ipStr string, position string) {
+	WarningListLock.Lock()
+	defer WarningListLock.Unlock()
+
+	WarningList[ipStr] = position
+
+	if len(WarningList) == 1000 {
+		var content string
+		for ip, pos := range WarningList {
+			line := "- " + ip + ", " + pos + "\n"
+			content += line
+			log.Println(ip, pos)
+		}
+
+		log.Println("警告列表已满，发送钉钉告警并清空 map")
+
+		//go sendDingTalkMessage("⚠️ 告警列表达到上限"+local_ipv4_addr, content)
+
+		// 清空 map
+		WarningList = make(map[string]string)
+	}
+}