添加开关，隐藏IP

app.js

@@ -1,5 +1,6 @@
 const express = require('express');
 const axios = require('axios');
+const SHOW_FULL_IP = false;
 
 const app = express();
 const port = 7860;
@@ -16,10 +17,21 @@ const timeout = 30000; // 访问超时
 
 // 使用中间件，接收所有请求
 app.use((req, res, next) => {
-  const userIP = req.headers['x-forwarded-for'] || req.socket.remoteAddress || null;
+  let userIP = req.headers['x-forwarded-for'] || req.socket.remoteAddress || null;
+
+  // 如果 SHOW_FULL_IP 为 false，则隐藏部分 IP 地址
+  if (!SHOW_FULL_IP) {
+    const parts = userIP.split('.');
+    if (parts.length === 4) {
+      parts[2] = 'xxx';
+      parts[3] = 'xxx';
+    }
+    userIP = parts.join('.');
+  }
+
   const currentDate = new Date().toLocaleString('zh-CN', { hour12: false });
   //console.log(`[${currentDate}] 收到来自 IP ${userIP} 的请求`);
-  res.locals.userIP = userIP; // 将 userIP 存储在 res.locals 中，以便在后续中间件和路由中使用
+  res.locals.userIP = userIP;
   next();
 });