# SkyArtShop - Security & Production Implementation Complete ## Tech Stack - **Backend**: Node.js v18+ with Express.js - **Database**: PostgreSQL 14+ - **Session Store**: connect-pg-simple (PostgreSQL-backed sessions) - **Frontend**: HTML5, CSS3, JavaScript (ES6+), Bootstrap 5 - **Process Manager**: PM2 - **Web Server**: Nginx (reverse proxy) - **OS**: Linux (Ubuntu/Debian) --- ## Security Improvements Implemented ### 1. ✅ Environment Configuration (.env) - Removed hardcoded credentials from `ecosystem.config.js` - Created `.env` file for sensitive configuration - Added `.env.example` template for deployment **Files Modified:** - Created: `.env`, `.env.example` - Modified: `ecosystem.config.js` --- ### 2. ✅ Logging System (Winston) - Replaced all `console.log`/`console.error` with structured logging - Implemented log rotation (10MB max, 5 files) - Separate error and combined logs - Console output for development environment **Files Created:** - `backend/config/logger.js` **Files Modified:** - All route files: `auth.js`, `admin.js`, `public.js`, `users.js`, `upload.js` - Middleware: `auth.js` - Config: `database.js` --- ### 3. ✅ Rate Limiting - API rate limiter: 100 requests per 15 minutes - Auth rate limiter: 5 login attempts per 15 minutes - Upload rate limiter: 50 uploads per hour **Files Created:** - `backend/config/rateLimiter.js` **Applied to:** - All `/api/*` routes - Login/logout endpoints - File upload endpoint --- ### 4. ✅ Input Validation & Sanitization - Implemented express-validator for all inputs - SQL injection protection via parameterized queries - XSS protection via input escaping - Email normalization - Strong password requirements (8+ chars, uppercase, lowercase, number) **Files Created:** - `backend/middleware/validators.js` **Validators Added:** - Login validation - User creation/update validation - Product CRUD validation - Blog post validation - Pagination validation --- ### 5. ✅ Security Headers (Helmet.js) - Content Security Policy (CSP) - HTTP Strict Transport Security (HSTS) - X-Frame-Options - X-Content-Type-Options - X-XSS-Protection **Configuration:** - Modified: `backend/server.js` --- ### 6. ✅ Error Handling - Centralized error handler - Production vs development error responses - PostgreSQL error translation - Async error wrapper - Custom AppError class **Files Created:** - `backend/middleware/errorHandler.js` **Features:** - Hide sensitive error details in production - Log all errors with context - Standardized error responses - 404 handler --- ### 7. ✅ Database Transaction Support - Transaction helper function - Rollback on error - Connection pooling (max 20 connections) **Files Modified:** - `backend/config/database.js` **Added:** - `transaction()` helper function - `healthCheck()` function --- ### 8. ✅ File Upload Security - MIME type validation - File extension whitelist - File size limits (5MB default) - Filename sanitization - Upload rate limiting - Automatic cleanup on errors **Files Modified:** - `backend/routes/upload.js` **Security Features:** - Only allow image types (jpeg, png, gif, webp) - Limit filename length to 50 characters - Generate unique filenames - Log all upload attempts - Clean up failed uploads --- ### 9. ✅ Health Check Endpoint - Real database connectivity test - Memory usage monitoring - Uptime tracking - Graceful degradation **Endpoint:** - `GET /health` **Returns:** - Database connection status - Server uptime - Memory usage - Timestamp --- ### 10. ✅ Graceful Shutdown - Proper SIGTERM/SIGINT handling - Close HTTP connections gracefully - Close database pool - 10-second forced shutdown timeout **Files Modified:** - `backend/server.js` --- ## Security Best Practices Applied ### Authentication & Authorization - ✅ Bcrypt password hashing (rounds: 12) - ✅ Session-based authentication - ✅ HttpOnly secure cookies (production) - ✅ Role-based access control (RBAC) - ✅ Session expiry (24 hours) - ✅ Last login tracking ### Input Validation - ✅ All user inputs validated - ✅ SQL injection prevention (parameterized queries) - ✅ XSS prevention (input escaping) - ✅ Email validation and normalization - ✅ Strong password requirements ### API Security - ✅ Rate limiting on all endpoints - ✅ CORS configuration ready - ✅ Trust proxy for nginx reverse proxy - ✅ Request logging with IP tracking ### File Security - ✅ File type validation - ✅ File size limits - ✅ Filename sanitization - ✅ Unique filename generation - ✅ Upload rate limiting ### Error Handling - ✅ No sensitive data in error messages - ✅ All errors logged with context - ✅ Production vs development error responses - ✅ PostgreSQL error translation ### Logging & Monitoring - ✅ Structured logging (Winston) - ✅ Log rotation - ✅ Separate error logs - ✅ Request logging - ✅ Security event logging (failed logins, etc.) --- ## Required Environment Variables Create `.env` file in project root: ```env NODE_ENV=production PORT=5000 HOST=0.0.0.0 DB_HOST=localhost DB_PORT=5432 DB_NAME=skyartshop DB_USER=skyartapp DB_PASSWORD=your_secure_password_here SESSION_SECRET=generate_a_random_string_at_least_32_characters_long UPLOAD_DIR=/var/www/skyartshop/uploads MAX_FILE_SIZE=5242880 ALLOWED_FILE_TYPES=image/jpeg,image/png,image/gif,image/webp RATE_LIMIT_WINDOW_MS=900000 RATE_LIMIT_MAX_REQUESTS=100 BCRYPT_ROUNDS=12 LOG_LEVEL=info LOG_FILE=logs/app.log LOG_MAX_SIZE=10m LOG_MAX_FILES=7d ``` --- ## Deployment Checklist ### Before Production - [ ] Generate strong `SESSION_SECRET` (32+ characters) - [ ] Change all default passwords - [ ] Set `NODE_ENV=production` - [ ] Configure `CORS_ORIGIN` if needed - [ ] Review and adjust rate limits - [ ] Set up SSL/TLS certificates - [ ] Configure nginx reverse proxy - [ ] Set up firewall rules - [ ] Enable log rotation - [ ] Set up monitoring/alerts - [ ] Backup database regularly - [ ] Test all security features ### Nginx Configuration ```nginx server { listen 80; server_name yourdomain.com; return 301 https://$server_name$request_uri; } server { listen 443 ssl http2; server_name yourdomain.com; ssl_certificate /path/to/cert.pem; ssl_certificate_key /path/to/key.pem; location / { proxy_pass http://localhost:5000; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; proxy_cache_bypass $http_upgrade; } } ``` --- ## Testing Commands ```bash # Test server startup npm start # Check logs tail -f backend/logs/combined.log tail -f backend/logs/error.log # Test health endpoint curl http://localhost:5000/health # Test rate limiting for i in {1..10}; do curl http://localhost:5000/api/products; done # Check for security vulnerabilities npm audit # Fix vulnerabilities npm audit fix ``` --- ## Known Issues & Recommendations ### Fixed Issues 1. ✅ Hardcoded credentials - Moved to .env 2. ✅ No input validation - Added express-validator 3. ✅ No rate limiting - Implemented multi-tier rate limiting 4. ✅ Console logging - Replaced with Winston 5. ✅ Poor error handling - Centralized error handler 6. ✅ No security headers - Added Helmet.js 7. ✅ Weak file upload security - Enhanced validation 8. ✅ No graceful shutdown - Implemented proper shutdown ### Recommendations for Future 1. **CSRF Protection**: Consider adding CSRF tokens for state-changing operations 2. **API Documentation**: Add Swagger/OpenAPI documentation 3. **Unit Tests**: Implement Jest/Mocha test suite 4. **Integration Tests**: Add supertest for API testing 5. **Database Migrations**: Use a migration tool (e.g., node-pg-migrate) 6. **Redis Session Store**: For better performance in production 7. **Caching**: Implement Redis caching for frequently accessed data 8. **Image Optimization**: Add sharp for image resizing/optimization 9. **Content Delivery**: Consider CDN for static assets 10. **Monitoring**: Add APM (Application Performance Monitoring) --- ## Database Tables Required Ensure these tables exist in PostgreSQL: - `adminusers` - Admin user accounts - `roles` - User roles and permissions - `products` - Product catalog - `portfolioprojects` - Portfolio items - `blogposts` - Blog articles - `pages` - Static pages - `uploads` - File upload tracking - `session` - Session storage (auto-created) - `sitesettings` - Site configuration - `homepagesections` - Homepage content --- ## Support & Maintenance ### Log Files Location - `backend/logs/combined.log` - All logs - `backend/logs/error.log` - Error logs only - `/var/log/skyartshop/pm2-*.log` - PM2 process logs ### Common Commands ```bash # Start server npm start # Development mode with auto-restart npm run dev # Check PM2 status pm2 status skyartshop # Restart PM2 pm2 restart skyartshop # View PM2 logs pm2 logs skyartshop # Stop server pm2 stop skyartshop ``` --- ## Security Contacts For security issues, please review logs at: - `backend/logs/error.log` - PM2 logs via `pm2 logs` Monitor for: - Failed login attempts - Rate limit violations - File upload rejections - Database errors - Unhandled exceptions --- **Last Updated**: December 18, 2025 **Version**: 2.0.0 (Production Ready)