[mirotalksfu] - add IP whitelist middleware

app/src/middleware/IpWhitelist.js

@@ -0,0 +1,23 @@
+'use strict';
+
+const config = require('../config');
+const Logger = require('../Logger');
+const log = new Logger('RestrictAccessByIP');
+
+const IpWhitelistEnabled = config.middleware ? config.middleware.IpWhitelist.enabled : false;
+const allowedIPs = config.middleware ? config.middleware.IpWhitelist.allowed : [];
+
+const restrictAccessByIP = (req, res, next) => {
+    if (!IpWhitelistEnabled) return next();
+    //
+    const clientIP = req.headers['x-forwarded-for'] || req.socket.remoteAddress || req.ip;
+    log.debug('Check IP', clientIP);
+    if (allowedIPs.includes(clientIP)) {
+        next();
+    } else {
+        log.info('Forbidden: Access denied from this IP address', { clientIP: clientIP });
+        res.status(403).json({ error: 'Forbidden', message: 'Access denied from this IP address.' });
+    }
+};
+
+module.exports = restrictAccessByIP;