add cdnjs & add Access-Control-Allow-Origin header

app.js

@@ -5,8 +5,19 @@ const proxy_router = require('./src/router');
 dotenv.config();
 const app = express();
 
+app.use((req, res, _next) => {
+    res.header('Access-Control-Allow-Origin', '*');
+    _next();
+})
+
 proxy_router.load(app);
 
+app.use((req, res, _next) => {
+    res.status(403);
+    res.header('Content-Type', 'application/json');
+    res.end('{"status": false}');
+});
+
 app.listen(process.env.PORT, process.env.HOST, () => {
     console.log(`Server running at http://${process.env.HOST}:${process.env.PORT}`);
 });

src/proxies/cdnjs.js

@@ -0,0 +1,22 @@
+const { createProxyMiddleware } = require('http-proxy-middleware');
+
+const options = {
+    target: 'https://cdnjs.cloudflare.com',
+    pathRewrite: {
+        '^/cdnjs/': '/'
+    },
+    onProxyRes: onProxyRes,
+    changeOrigin: true
+}
+
+function onProxyRes(proxyRes, req) {
+    //console.log(proxyRes.headers);
+    if (proxyRes.headers['location']) {
+        // 修改Location重定向
+        let hl = proxyRes.headers['location'];
+            delete proxyRes.headers['location'];
+            proxyRes.headers['location'] = `/cdnjs${hl}`;
+    }
+    console.log(`[PROXY][CDNJS] /cdnjs${req.path} => ${req.path}`);
+}
+module.exports = createProxyMiddleware(options);

src/router.js

@@ -6,6 +6,10 @@ const proxies = [
     {
         name: 'jsdelivr',
         path: '/jsd/'
+    },
+    {
+        name: 'cdnjs',
+        path: '/cdnjs/'
     }
 ]