chore: bump backend version to 1.0.60

- Add keyGenerator function to properly detect client IP behind proxy
- Support X-Forwarded-For and X-Real-IP headers from Traefik/nginx
- Add custom handlers with better error messages
- Add debug endpoint (dev only) to verify IP detection
- Improve logging for rate limit debugging

This fixes the 429 errors when multiple requests come from same proxy IP.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "picpeak-backend",
-  "version": "1.0.58",
+  "version": "1.0.60",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "picpeak-backend",
-      "version": "1.0.58",
+      "version": "1.0.60",
       "dependencies": {
         "adm-zip": "^0.5.16",
         "archiver": "^5.3.1",

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "picpeak-backend",
-  "version": "1.0.58",
+  "version": "1.0.60",
   "description": "Backend for PicPeak event photo sharing platform",
   "main": "server.js",
   "scripts": {

backend/server.js

@@ -97,6 +97,38 @@ app.use(cors(corsOptions));
 const limiter = rateLimit({
   windowMs: 15 * 60 * 1000, // 15 minutes
   max: process.env.NODE_ENV === 'development' ? 1000 : 100, // More lenient in development
+  // Use correct client IP when behind proxy
+  keyGenerator: (req) => {
+    // Get the real client IP from proxy headers
+    const clientIp = req.headers['x-forwarded-for']?.split(',')[0]?.trim() || 
+                     req.headers['x-real-ip'] || 
+                     req.connection.remoteAddress || 
+                     req.ip;
+    
+    // Log rate limit key for debugging (only in development)
+    if (process.env.NODE_ENV === 'development' && req.path.includes('/api/')) {
+      logger.debug('Rate limit key generated', { 
+        path: req.path,
+        clientIp,
+        headers: {
+          'x-forwarded-for': req.headers['x-forwarded-for'],
+          'x-real-ip': req.headers['x-real-ip']
+        }
+      });
+    }
+    
+    return clientIp;
+  },
+  handler: (req, res) => {
+    logger.warn('Rate limit exceeded', {
+      ip: req.headers['x-forwarded-for']?.split(',')[0]?.trim() || req.ip,
+      path: req.path,
+      method: req.method
+    });
+    res.status(429).json({ 
+      error: 'Too many requests, please try again later.' 
+    });
+  },
   skip: (req) => {
     // Skip rate limiting for authenticated admin users
     if (req.path.startsWith('/api/admin/') && req.headers.authorization) {
@@ -118,7 +150,24 @@ const limiter = rateLimit({
 
 const authLimiter = rateLimit({
   windowMs: 15 * 60 * 1000,
-  max: 5 // limit auth attempts
+  max: 5, // limit auth attempts
+  // Use correct client IP when behind proxy
+  keyGenerator: (req) => {
+    // Get the real client IP from proxy headers
+    return req.headers['x-forwarded-for']?.split(',')[0]?.trim() || 
+           req.headers['x-real-ip'] || 
+           req.connection.remoteAddress || 
+           req.ip;
+  },
+  handler: (req, res) => {
+    logger.warn('Auth rate limit exceeded', {
+      ip: req.headers['x-forwarded-for']?.split(',')[0]?.trim() || req.ip,
+      path: req.path
+    });
+    res.status(429).json({ 
+      error: 'Too many authentication attempts, please try again later.' 
+    });
+  }
 });
 
 // Apply rate limiting - admin routes check will skip for valid admin tokens
@@ -158,6 +207,28 @@ app.use('/thumbnails', require('./src/middleware/photoAuth'), setCorsHeaders, se
 // Static file serving for uploads (public - logos, favicons)
 app.use('/uploads', setCorsHeaders, secureStatic(path.join(storagePath, 'uploads')));
 
+// Debug endpoint to check IP detection (only in development)
+if (process.env.NODE_ENV === 'development') {
+  app.get('/api/debug/ip', (req, res) => {
+    const clientIp = req.headers['x-forwarded-for']?.split(',')[0]?.trim() || 
+                     req.headers['x-real-ip'] || 
+                     req.connection.remoteAddress || 
+                     req.ip;
+    
+    res.json({
+      detectedIp: clientIp,
+      reqIp: req.ip,
+      headers: {
+        'x-forwarded-for': req.headers['x-forwarded-for'],
+        'x-real-ip': req.headers['x-real-ip'],
+        'x-forwarded-proto': req.headers['x-forwarded-proto'],
+        'x-forwarded-host': req.headers['x-forwarded-host']
+      },
+      trustProxy: app.get('trust proxy')
+    });
+  });
+}
+
 // Health check endpoint
 app.get('/health', async (req, res) => {
   try {

backend/src/config/validateEnv.js

@@ -34,7 +34,7 @@ function validateEnvironment() {
     if (name === 'JWT_SECRET' && value) {
       // Check for the insecure default value
       if (value === 'your-secret-key') {
-        errors.push(`CRITICAL: JWT_SECRET is set to the insecure default value. Please set a secure secret key.`);
+        errors.push('CRITICAL: JWT_SECRET is set to the insecure default value. Please set a secure secret key.');
       }
       
       // Check minimum length (should be at least 32 characters for security)

backend/src/database/db.js

@@ -59,9 +59,9 @@ async function initializeDatabase() {
           )
         `);
         
-        await db.raw(`INSERT INTO events_new SELECT * FROM events`);
+        await db.raw('INSERT INTO events_new SELECT * FROM events');
-        await db.raw(`DROP TABLE events`);
+        await db.raw('DROP TABLE events');
-        await db.raw(`ALTER TABLE events_new RENAME TO events`);
+        await db.raw('ALTER TABLE events_new RENAME TO events');
       } catch (error) {
         // If the migration fails, it might already have been applied
         console.log('Color theme migration may have already been applied');

backend/src/routes/adminArchives.js

@@ -251,7 +251,7 @@ router.post('/:id/restore', adminAuth, async (req, res) => {
           } catch (statError) {
             console.error(`Failed to stat file: ${actualFilePath}`);
             console.error(`Entry name was: ${entry.entryName}`);
-            console.error(`Error:`, statError.message);
+            console.error('Error:', statError.message);
             // Skip this file if we can't stat it
             continue;
           }

backend/src/routes/adminEvents.js

@@ -10,7 +10,7 @@ const path = require('path');
 const { archiveEvent } = require('../services/archiveService');
 const { queueEmail } = require('../services/emailProcessor');
 const { escapeLikePattern } = require('../utils/sqlSecurity');
-const { formatDate } = require('../utils/dateFormatter');
+// formatDate import removed - dates are formatted by email processor
 const { validatePasswordInContext, getBcryptRounds } = require('../utils/passwordValidation');
 const { formatBoolean } = require('../utils/dbCompat');
 
@@ -135,8 +135,7 @@ router.post('/', adminAuth, [
     );
     
     // Queue creation email
-    // Determine language based on email domain
+    // Language detection is handled by email processor
-    const emailLang = host_email.endsWith('.de') ? 'de' : 'en';
     
     await db('email_queue').insert({
       event_id: eventId,
@@ -145,10 +144,10 @@ router.post('/', adminAuth, [
       email_data: JSON.stringify({
         host_name: host_name,
         event_name,
-        event_date: await formatDate(event_date, emailLang),
+        event_date: event_date,  // Pass raw date - will be formatted by email processor
         gallery_link: shareLink,
         gallery_password: password,
-        expiry_date: await formatDate(expires_at, emailLang),
+        expiry_date: expires_at.toISOString(),  // Pass ISO string - will be formatted by email processor
         welcome_message: welcome_message || ''
       }),
       status: 'pending',
@@ -553,10 +552,10 @@ router.post('/:id/reset-password', adminAuth, async (req, res) => {
       await queueEmail(id, event.host_email, 'gallery_created', {
         host_name: event.host_email.split('@')[0],
         event_name: event.event_name,
-        event_date: new Date(event.event_date).toLocaleDateString(),
+        event_date: event.event_date,  // Pass raw date - will be formatted by email processor
         gallery_link: event.share_link,
         gallery_password: newPassword,
-        expiry_date: new Date(event.expires_at).toLocaleDateString()
+        expiry_date: event.expires_at  // Pass raw date - will be formatted by email processor
       });
     }
 
@@ -603,18 +602,16 @@ router.post('/:id/resend-email', adminAuth, async (req, res) => {
       galleryPassword = '{{password_security_message}}';
     }
     
-    // Format dates in a neutral format - the email processor will localize them
+    // Dates will be formatted by the email processor based on recipient language
-    const eventDate = new Date(event.event_date);
-    const expiryDate = new Date(event.expires_at);
     
     // Queue the email
     await queueEmail(id, event.host_email, 'gallery_created', {
       host_name: event.host_name || event.host_email.split('@')[0],
       event_name: event.event_name,
-      event_date: eventDate.toISOString().split('T')[0], // YYYY-MM-DD format
+      event_date: event.event_date,  // Pass raw date - will be formatted by email processor
       gallery_link: event.share_link,
       gallery_password: galleryPassword,
-      expiry_date: expiryDate.toISOString().split('T')[0], // YYYY-MM-DD format
+      expiry_date: event.expires_at,  // Pass raw date - will be formatted by email processor
       welcome_message: event.welcome_message || '',
       eventId: id,
       isResend: true // Flag to indicate this is a resend

backend/src/routes/events.js

@@ -87,10 +87,10 @@ router.post('/', adminAuth, [
     await queueEmail(eventId, host_email, 'gallery_created', {
       host_name: host_email.split('@')[0], // Extract name from email
       event_name,
-      event_date: new Date(event_date).toLocaleDateString(),
+      event_date: event_date,  // Pass raw date - will be formatted by email processor
       gallery_link: shareLink,
       gallery_password: password,
-      expiry_date: expires_at.toLocaleDateString(),
+      expiry_date: expires_at.toISOString(),  // Pass ISO string - will be formatted by email processor
       welcome_message: welcome_message || ''
     });
     

backend/src/utils/sqlSecurity.js

@@ -47,7 +47,7 @@ function escapeLikePattern(input) {
     .replace(/\\/g, '\\\\') // Escape backslashes first
     .replace(/%/g, '\\%')   // Escape percent signs
     .replace(/_/g, '\\_')   // Escape underscores
-    .replace(/'/g, "''");   // Escape single quotes for safety
+    .replace(/'/g, '\'\'');   // Escape single quotes for safety
 }
 
 /**