try again mac-lookup

backend/package.json

@@ -21,4 +21,4 @@
     "pino-pretty": "^13.0.0",
     "whois-json": "^2.0.4"
   }
-}
+}

backend/routes/macLookup.js

@@ -0,0 +1,39 @@
+// backend/routes/macLookup.js
+const express = require('express');
+const Sentry = require("@sentry/node");
+const macaddress = require('macaddress');
+const pino = require('pino');
+const { isValidMacAddress } = require('../utils'); // Wir fügen diese neue Funktion hinzu
+
+const logger = pino({ level: process.env.LOG_LEVEL || 'info' });
+const router = express.Router();
+
+router.get('/', async (req, res) => {
+    const macRaw = req.query.mac;
+    const mac = typeof macRaw === 'string' ? macRaw.trim() : macRaw;
+    const requestIp = req.ip || req.socket.remoteAddress;
+
+    logger.info({ requestIp, mac }, 'MAC lookup request received');
+
+    if (!isValidMacAddress(mac)) {
+        logger.warn({ requestIp, mac }, 'Invalid MAC address for lookup');
+        return res.status(400).json({ success: false, error: 'Invalid MAC address format provided.' });
+    }
+
+    try {
+        const vendor = await macaddress.lookup(mac);
+        if (vendor) {
+            logger.info({ requestIp, mac, vendor }, 'MAC lookup successful');
+            res.json({ success: true, mac, vendor });
+        } else {
+            logger.info({ requestIp, mac }, 'MAC address not found in OUI database');
+            res.status(404).json({ success: false, error: 'Vendor not found for this MAC address.' });
+        }
+    } catch (error) {
+        logger.error({ requestIp, mac, error: error.message }, 'MAC lookup failed');
+        Sentry.captureException(error, { extra: { requestIp, mac } });
+        res.status(500).json({ success: false, error: 'An unexpected error occurred during the MAC lookup.' });
+    }
+});
+
+module.exports = router;

backend/server.js

@@ -1,6 +1,3 @@
-// backend/server.js
-// server.js
-// Load .env variables FIRST!
 require('dotenv').config();
 
 // --- Sentry Initialisierung (GANZ OBEN, nach dotenv) ---
@@ -35,6 +32,7 @@ const dnsLookupRoutes = require('./routes/dnsLookup');
 const whoisLookupRoutes = require('./routes/whoisLookup');
 const versionRoutes = require('./routes/version');
 const portScanRoutes = require('./routes/portScan');
+const macLookupRoutes = require('./routes/macLookup');
 
 // --- Logger Initialisierung ---
 const logger = pino({
@@ -97,6 +95,7 @@ app.use('/api/lookup', generalLimiter);
 app.use('/api/dns-lookup', generalLimiter);
 app.use('/api/whois-lookup', generalLimiter);
 app.use('/api/port-scan', generalLimiter);
+app.use('/api/mac-lookup', generalLimiter);
 
 
 // --- API Routes ---
@@ -109,6 +108,7 @@ app.use('/api/dns-lookup', dnsLookupRoutes);
 app.use('/api/whois-lookup', whoisLookupRoutes);
 app.use('/api/version', versionRoutes);
 app.use('/api/port-scan', portScanRoutes);
+app.use('/api/mac-lookup', macLookupRoutes);
 
 
 // --- Sentry Error Handler ---

backend/utils.js

@@ -1,3 +1,4 @@
+// backend/utils.js
 const net = require('net'); // Node.js built-in module for IP validation
 const { spawn } = require('child_process');
 const pino = require('pino'); // Import pino for logging within utils if needed
@@ -65,6 +66,20 @@ function isValidDomain(domain) {
     return domainRegex.test(domain.trim());
 }
 
+/**
+ * Validiert eine MAC-Adresse.
+ * @param {string} mac - Die zu validierende MAC-Adresse.
+ * @returns {boolean} True, wenn das Format gültig ist, sonst false.
+ */
+function isValidMacAddress(mac) {
+    if (!mac || typeof mac !== 'string') {
+        return false;
+    }
+    // This regex matches common MAC address formats (e.g., 00:1A:2B:3C:4D:5E, 00-1A-2B-3C-4D-5E, 001A2B3C4D5E)
+    const macRegex = /^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$|^([0-9A-Fa-f]{12})$/;
+    return macRegex.test(mac.trim());
+}
+
 
 /**
  * Bereinigt eine IP-Adresse (z.B. entfernt ::ffff: Präfix von IPv4-mapped IPv6).
@@ -302,6 +317,7 @@ module.exports = {
     isValidIp,
     isPrivateIp,
     isValidDomain,
+    isValidMacAddress,
     getCleanIp,
     executeCommand,
     parsePingOutput,