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2025-10-03 02:09:53 +02:00 · 2025-10-03 02:09:53 +02:00 · ce8012779b
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--- a/.env.example
+++ b/.env.example
@ -0,0 +1,183 @@
+# ============================================================================
+# WebDAV Server Configuration
+# Copy this file to .env and modify as needed
+# ============================================================================
+
+# ----------------------------------------------------------------------------
+# Server Configuration
+# ----------------------------------------------------------------------------
+HOST=0.0.0.0
+PORT=8080
+
+# SSL/TLS Configuration (recommended for production)
+SSL_ENABLED=false
+SSL_CERT_PATH=/path/to/cert.pem
+SSL_KEY_PATH=/path/to/key.pem
+
+# ----------------------------------------------------------------------------
+# Database Configuration
+# ----------------------------------------------------------------------------
+DB_PATH=./webdav.db
+DB_BACKUP_INTERVAL=3600
+DB_VACUUM_INTERVAL=86400
+
+# ----------------------------------------------------------------------------
+# Authentication Configuration
+# ----------------------------------------------------------------------------
+# Supported methods: basic, digest, token (comma-separated)
+AUTH_METHODS=basic,digest
+
+# Secret key for JWT and session encryption (generate with: python -c "import secrets; print(secrets.token_hex(32))")
+JWT_SECRET_KEY=your-secret-key-here-change-this-in-production
+
+# Session timeout in seconds (1 hour default)
+SESSION_TIMEOUT=3600
+
+# Password requirements
+PASSWORD_MIN_LENGTH=8
+PASSWORD_REQUIRE_UPPERCASE=true
+PASSWORD_REQUIRE_NUMBERS=true
+PASSWORD_REQUIRE_SPECIAL=true
+
+# ----------------------------------------------------------------------------
+# WebDAV Configuration
+# ----------------------------------------------------------------------------
+# WebDAV root directory (where user files are stored)
+WEBDAV_ROOT=./webdav
+
+# Maximum file size in bytes (100MB default)
+MAX_FILE_SIZE=104857600
+
+# Maximum PROPFIND depth (3 default, use lower value for better performance)
+MAX_PROPFIND_DEPTH=3
+
+# Default lock timeout in seconds (1 hour default)
+LOCK_TIMEOUT_DEFAULT=3600
+
+# Windows compatibility mode (recommended: true)
+ENABLE_WINDOWS_COMPATIBILITY=true
+
+# ----------------------------------------------------------------------------
+# Performance Configuration
+# ----------------------------------------------------------------------------
+# Maximum concurrent connections
+MAX_CONNECTIONS=1000
+
+# Keep-alive timeout in seconds
+KEEPALIVE_TIMEOUT=30
+
+# Client timeout in seconds
+CLIENT_TIMEOUT=60
+
+# Worker connections (for production deployment)
+WORKER_CONNECTIONS=1024
+
+# Number of worker processes (for gunicorn)
+WORKERS=4
+
+# ----------------------------------------------------------------------------
+# Logging Configuration
+# ----------------------------------------------------------------------------
+# Log level: DEBUG, INFO, WARNING, ERROR, CRITICAL
+LOG_LEVEL=INFO
+
+# Log file paths
+LOG_FILE=./logs/webdav.log
+ACCESS_LOG_FILE=./logs/access.log
+ERROR_LOG_FILE=./logs/error.log
+
+# Enable/disable specific logs
+ACCESS_LOG_ENABLED=true
+ERROR_LOG_ENABLED=true
+DEBUG_LOG_ENABLED=false
+
+# ----------------------------------------------------------------------------
+# Security Configuration
+# ----------------------------------------------------------------------------
+# CORS settings
+CORS_ENABLED=false
+CORS_ORIGINS=*
+CORS_METHODS=GET,POST,PUT,DELETE,OPTIONS,PROPFIND,PROPPATCH,MKCOL,COPY,MOVE,LOCK,UNLOCK
+
+# Rate limiting
+RATE_LIMIT_ENABLED=true
+RATE_LIMIT_REQUESTS=100
+RATE_LIMIT_WINDOW=60
+
+# Brute force protection
+MAX_LOGIN_ATTEMPTS=5
+LOGIN_ATTEMPT_WINDOW=300
+ACCOUNT_LOCKOUT_DURATION=900
+
+# IP whitelist/blacklist (comma-separated)
+IP_WHITELIST=
+IP_BLACKLIST=
+
+# ----------------------------------------------------------------------------
+# Storage Configuration
+# ----------------------------------------------------------------------------
+# User storage quotas in bytes (0 = unlimited)
+DEFAULT_USER_QUOTA=10737418240  # 10GB
+
+# Shared folder configuration
+SHARED_FOLDER_ENABLED=true
+PUBLIC_FOLDER_ENABLED=false
+
+# File versioning
+ENABLE_FILE_VERSIONING=false
+MAX_FILE_VERSIONS=5
+
+# ----------------------------------------------------------------------------
+# Cache Configuration (Optional - requires Redis)
+# ----------------------------------------------------------------------------
+CACHE_ENABLED=false
+REDIS_HOST=localhost
+REDIS_PORT=6379
+REDIS_DB=0
+REDIS_PASSWORD=
+
+# Cache TTL in seconds
+CACHE_TTL_SESSION=3600
+CACHE_TTL_LOCKS=1800
+CACHE_TTL_PROPERTIES=300
+
+# ----------------------------------------------------------------------------
+# Monitoring and Metrics (Optional)
+# ----------------------------------------------------------------------------
+METRICS_ENABLED=false
+PROMETHEUS_PORT=9090
+
+# Health check endpoint
+HEALTHCHECK_ENABLED=true
+HEALTHCHECK_PATH=/health
+
+# ----------------------------------------------------------------------------
+# Email Configuration (for notifications)
+# ----------------------------------------------------------------------------
+EMAIL_ENABLED=false
+SMTP_HOST=smtp.gmail.com
+SMTP_PORT=587
+SMTP_USER=your-email@gmail.com
+SMTP_PASSWORD=your-app-password
+SMTP_FROM=webdav@example.com
+SMTP_USE_TLS=true
+
+# ----------------------------------------------------------------------------
+# Backup Configuration
+# ----------------------------------------------------------------------------
+BACKUP_ENABLED=true
+BACKUP_PATH=./backups
+BACKUP_SCHEDULE=0 2 * * *  # Daily at 2 AM (cron format)
+BACKUP_RETENTION_DAYS=30
+
+# ----------------------------------------------------------------------------
+# Development Settings
+# ----------------------------------------------------------------------------
+# Enable debug mode (DO NOT use in production)
+DEBUG=false
+
+# Auto-reload on code changes (development only)
+AUTO_RELOAD=false
+
+# Enable detailed error messages
+DETAILED_ERRORS=false
--- a/78
+++ b/78
@ -0,0 +1,78 @@
+# Multi-stage Dockerfile for WebDAV Server
+# Optimized for production deployment
+
+# ============================================================================
+# Stage 1: Builder - Install dependencies and prepare environment
+# ============================================================================
+FROM python:3.11-slim as builder
+
+# Set working directory
+WORKDIR /build
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc \
+    g++ \
+    libxml2-dev \
+    libxslt-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies to a target directory
+RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
+
+
+# ============================================================================
+# Stage 2: Runtime - Create minimal production image
+# ============================================================================
+FROM python:3.11-slim
+
+# Set labels for metadata
+LABEL maintainer="WebDAV Server <webdav@example.com>"
+LABEL description="Production-ready WebDAV Server with aiohttp"
+LABEL version="1.0.0"
+
+# Create app user for security (don't run as root)
+RUN groupadd -r webdav && useradd -r -g webdav webdav
+
+# Install runtime dependencies only
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libxml2 \
+    libxslt1.1 \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy Python packages from builder
+COPY --from=builder /install /usr/local
+
+# Copy application files
+COPY main.py .
+COPY config.py .
+COPY .env.example .env
+
+# Create necessary directories
+RUN mkdir -p /app/webdav /app/logs /app/backups && \
+    chown -R webdav:webdav /app
+
+# Switch to non-root user
+USER webdav
+
+# Expose port
+EXPOSE 8080
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8080/ || exit 1
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+ENV HOST=0.0.0.0
+ENV PORT=8080
+
+# Run application
+CMD ["python", "main.py"]
--- a/QUICKSTART.md
+++ b/QUICKSTART.md
@ -0,0 +1,450 @@
+# WebDAV Server - Quick Start Guide
+
+Get your WebDAV server up and running in 5 minutes!
+
+## 🚀 Instant Setup
+
+### Option 1: Automated Installation (Recommended)
+
+```bash
+# Download and run the setup script
+chmod +x setup.sh
+./setup.sh
+```
+
+The script will:
+- ✅ Check system requirements
+- ✅ Install dependencies
+- ✅ Create virtual environment
+- ✅ Set up configuration
+- ✅ Initialize database
+- ✅ Create default admin user
+
+### Option 2: Manual Installation
+
+```bash
+# 1. Create project directory
+mkdir webdav-server && cd webdav-server
+
+# 2. Create virtual environment
+python3 -m venv venv
+source venv/bin/activate
+
+# 3. Install dependencies
+pip install aiohttp aiofiles aiohttp-session cryptography python-dotenv lxml gunicorn
+
+# 4. Copy the main.py file from the artifacts
+
+# 5. Create .env file
+cat > .env << 'EOF'
+HOST=0.0.0.0
+PORT=8080
+DB_PATH=./webdav.db
+WEBDAV_ROOT=./webdav
+AUTH_METHODS=basic,digest
+JWT_SECRET_KEY=$(python -c "import secrets; print(secrets.token_hex(32))")
+SESSION_TIMEOUT=3600
+EOF
+
+# 6. Create directory structure
+mkdir -p webdav/users logs backups
+
+# 7. Run the server
+python main.py
+```
+
+### Option 3: Docker (Fastest)
+
+```bash
+# 1. Create docker-compose.yml and Dockerfile from artifacts
+
+# 2. Start with Docker Compose
+docker-compose up -d
+
+# 3. Check logs
+docker-compose logs -f webdav
+```
+
+## 🎯 First Steps
+
+### 1. Access the Server
+
+**Default Credentials:**
+- Username: `admin`
+- Password: `admin123`
+- URL: `http://localhost:8080/`
+
+⚠️ **IMPORTANT**: Change the default password immediately!
+
+### 2. Connect with Windows Explorer
+
+**Method 1: Map Network Drive**
+1. Open File Explorer
+2. Right-click "This PC" → "Map network drive"
+3. Enter: `http://localhost:8080/`
+4. Enter credentials: `admin` / `admin123`
+
+**Method 2: Add Network Location**
+1. Right-click "This PC" → "Add a network location"
+2. Choose custom network location
+3. Enter: `http://localhost:8080/`
+4. Enter credentials when prompted
+
+**Windows Troubleshooting:**
+- If connection fails, restart WebClient service:
+  ```powershell
+  net stop webclient
+  net start webclient
+  ```
+
+### 3. Connect with macOS Finder
+
+1. Press `Cmd+K` (Go → Connect to Server)
+2. Enter: `http://localhost:8080/`
+3. Click "Connect"
+4. Enter credentials: `admin` / `admin123`
+
+### 4. Connect with Linux
+
+```bash
+# Install davfs2
+sudo apt-get install davfs2
+
+# Mount WebDAV share
+sudo mount -t davfs http://localhost:8080/ /mnt/webdav
+
+# Enter credentials when prompted
+```
+
+## 👥 User Management
+
+### Create Users via CLI
+
+```bash
+# Activate virtual environment
+source venv/bin/activate
+
+# Create a new user (interactive)
+python webdav_cli.py user create john
+
+# Create with all details
+python webdav_cli.py user create jane \
+    --email jane@example.com \
+    --role user
+
+# List all users
+python webdav_cli.py user list
+
+# Change password
+python webdav_cli.py user password john
+
+# Deactivate user
+python webdav_cli.py user deactivate john
+
+# Delete user
+python webdav_cli.py user delete john --force
+```
+
+### Create Users Programmatically
+
+```python
+import asyncio
+from main import Database
+
+async def create_user():
+    db = Database('./webdav.db')
+    user_id = await db.create_user(
+        username='john',
+        password='SecurePass123!',
+        email='john@example.com',
+        role='user'
+    )
+    print(f"Created user ID: {user_id}")
+
+asyncio.run(create_user())
+```
+
+## 🔧 Common Operations
+
+### Upload Files
+
+**Using curl:**
+```bash
+curl -u admin:admin123 -T myfile.txt http://localhost:8080/myfile.txt
+```
+
+**Using Python:**
+```python
+import requests
+
+with open('myfile.txt', 'rb') as f:
+    response = requests.put(
+        'http://localhost:8080/myfile.txt',
+        data=f,
+        auth=('admin', 'admin123')
+    )
+print(response.status_code)
+```
+
+### Download Files
+
+```bash
+curl -u admin:admin123 http://localhost:8080/myfile.txt -o downloaded.txt
+```
+
+### Create Directories
+
+```bash
+curl -u admin:admin123 -X MKCOL http://localhost:8080/newfolder/
+```
+
+### List Directory Contents
+
+```bash
+curl -u admin:admin123 -X PROPFIND http://localhost:8080/ \
+    -H "Depth: 1" \
+    -H "Content-Type: application/xml" \
+    --data '<?xml version="1.0"?><D:propfind xmlns:D="DAV:"><D:allprop/></D:propfind>'
+```
+
+### Copy Files
+
+```bash
+curl -u admin:admin123 -X COPY \
+    http://localhost:8080/source.txt \
+    -H "Destination: http://localhost:8080/destination.txt"
+```
+
+### Move Files
+
+```bash
+curl -u admin:admin123 -X MOVE \
+    http://localhost:8080/old.txt \
+    -H "Destination: http://localhost:8080/new.txt"
+```
+
+### Delete Files
+
+```bash
+curl -u admin:admin123 -X DELETE http://localhost:8080/myfile.txt
+```
+
+## 🔒 Security Setup
+
+### Change Default Password
+
+```bash
+python webdav_cli.py user password admin
+# Enter new password when prompted
+```
+
+### Enable HTTPS (Production)
+
+1. **Get SSL Certificate (Let's Encrypt):**
+```bash
+sudo certbot certonly --standalone -d webdav.example.com
+```
+
+2. **Update .env:**
+```env
+SSL_ENABLED=true
+SSL_CERT_PATH=/etc/letsencrypt/live/webdav.example.com/fullchain.pem
+SSL_KEY_PATH=/etc/letsencrypt/live/webdav.example.com/privkey.pem
+```
+
+3. **Restart server**
+
+### Use Nginx Reverse Proxy (Recommended)
+
+1. Install Nginx:
+```bash
+sudo apt-get install nginx
+```
+
+2. Copy nginx.conf from artifacts to `/etc/nginx/conf.d/webdav.conf`
+
+3. Update domain name in config
+
+4. Reload Nginx:
+```bash
+sudo nginx -t
+sudo systemctl reload nginx
+```
+
+## 📊 Monitoring
+
+### View Statistics
+
+```bash
+python webdav_cli.py stats
+```
+
+### Check Active Locks
+
+```bash
+python webdav_cli.py lock list
+```
+
+### View Logs
+
+```bash
+# Application logs
+tail -f logs/webdav.log
+
+# Access logs
+tail -f logs/access.log
+
+# If using systemd
+sudo journalctl -u webdav -f
+```
+
+## 🐳 Docker Deployment
+
+### Start Service
+
+```bash
+docker-compose up -d
+```
+
+### View Logs
+
+```bash
+docker-compose logs -f
+```
+
+### Stop Service
+
+```bash
+docker-compose down
+```
+
+### Update and Restart
+
+```bash
+docker-compose pull
+docker-compose up -d --build
+```
+
+### Backup Data
+
+```bash
+# Backup database
+docker exec webdav-server python webdav_cli.py backup
+
+# Backup files
+docker cp webdav-server:/app/webdav ./backup-webdav/
+```
+
+## ⚙️ Production Deployment
+
+### Using Gunicorn (Recommended)
+
+```bash
+# Start with Gunicorn
+gunicorn main:init_app \
+    --config gunicorn_config.py \
+    --bind 0.0.0.0:8080 \
+    --workers 4
+
+# With systemd (after setup)
+sudo systemctl enable webdav
+sudo systemctl start webdav
+sudo systemctl status webdav
+```
+
+### Environment Configuration
+
+**Development:**
+```env
+DEBUG=true
+LOG_LEVEL=DEBUG
+WORKERS=1
+```
+
+**Production:**
+```env
+DEBUG=false
+LOG_LEVEL=INFO
+WORKERS=4
+SSL_ENABLED=true
+RATE_LIMIT_ENABLED=true
+```
+
+## 🔥 Common Issues
+
+### Issue: Connection Refused
+
+**Solution:**
+```bash
+# Check if server is running
+ps aux | grep python
+
+# Check port
+sudo netstat -tlnp | grep 8080
+
+# Check firewall
+sudo ufw allow 8080/tcp
+```
+
+### Issue: Permission Denied
+
+**Solution:**
+```bash
+# Fix directory permissions
+chmod -R 755 webdav/
+chown -R $USER:$USER webdav/
+```
+
+### Issue: Database Locked
+
+**Solution:**
+```bash
+# Stop all instances
+pkill -f "python main.py"
+
+# Check for locks
+lsof webdav.db
+
+# Restart server
+python main.py
+```
+
+### Issue: Windows Explorer Won't Connect
+
+**Solutions:**
+1. Restart WebClient service
+2. Enable Basic Auth in registry:
+   ```
+   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters
+   BasicAuthLevel = 2
+   ```
+3. Use HTTPS instead of HTTP
+4. Ensure URL ends with `/`
+
+## 📚 Next Steps
+
+1. **Read the full README.md** for comprehensive documentation
+2. **Configure SSL/TLS** for production use
+3. **Set up automated backups**
+4. **Configure monitoring** and alerts
+5. **Review security settings**
+6. **Set up user quotas** and permissions
+7. **Configure rate limiting**
+8. **Enable caching** with Redis
+
+## 🆘 Getting Help
+
+- **Documentation**: Check README.md and inline comments
+- **Logs**: Always check logs first (`logs/webdav.log`)
+- **CLI Help**: `python webdav_cli.py --help`
+- **Test Connection**: `curl -v http://localhost:8080/`
+
+## 🎉 You're All Set!
+
+Your WebDAV server is now ready to use. Start by:
+1. Changing the default admin password
+2. Creating user accounts
+3. Connecting with your favorite WebDAV client
+4. Uploading some files
+
+Happy file sharing! 🚀
--- a/README.md
+++ b/README.md
@ -0,0 +1,641 @@
+# WebDAV Server with aiohttp
+
+A comprehensive, production-ready WebDAV server implementation with full RFC 4918 compliance, Windows Explorer compatibility, and enterprise-grade features.
+
+## Features
+
+### Core WebDAV Protocol
+- ✅ **Full RFC 4918 Compliance**: All standard WebDAV methods implemented
+- ✅ **Windows Explorer Integration**: Seamless compatibility with Windows WebDAV Mini-Redirector
+- ✅ **Multiple Authentication Methods**: Basic, Digest, and Token-based authentication
+- ✅ **Resource Locking**: Exclusive and shared locks with timeout management
+- ✅ **Custom Properties**: Full property management (PROPFIND/PROPPATCH)
+- ✅ **Collection Operations**: MKCOL, COPY, MOVE with depth support
+
+### Enterprise Features
+- 🔒 **Multi-User Support**: Isolated user directories with permissions
+- 💾 **SQLite Database**: Robust backend for users, locks, and properties
+- 🌐 **Web Management Interface**: Admin dashboard and user portal
+- 🚀 **High Performance**: Async I/O with aiohttp and aiofiles
+- 🔐 **Security Focused**: Input validation, path traversal prevention, SQL injection protection
+- 📊 **Monitoring Ready**: Structured logging and metrics collection
+- 🐳 **Docker Support**: Container-ready with docker-compose
+- 📈 **Production Ready**: Gunicorn integration, health checks, graceful shutdown
+
+## Quick Start
+
+### Prerequisites
+
+- Python 3.8 or higher
+- pip (Python package manager)
+- Optional: Redis for caching
+- Optional: Docker for containerized deployment
+
+### Installation
+
+1. **Clone or create the project directory:**
+   ```bash
+   mkdir webdav-server
+   cd webdav-server
+   ```
+
+2. **Install dependencies:**
+   ```bash
+   pip install -r requirements.txt
+   ```
+
+3. **Configure environment:**
+   ```bash
+   cp .env.example .env
+   # Edit .env with your configuration
+   nano .env
+   ```
+
+4. **Generate a secure secret key:**
+   ```bash
+   python -c "import secrets; print(secrets.token_hex(32))"
+   # Copy the output to JWT_SECRET_KEY in .env
+   ```
+
+5. **Run the server:**
+   ```bash
+   python main.py
+   ```
+
+The server will start on `http://0.0.0.0:8080` by default.
+
+### First Run
+
+On first run, the server automatically creates:
+- A default admin user: `admin` / `admin123`
+- The WebDAV root directory structure
+- SQLite database with all required tables
+
+**⚠️ Important**: Change the default admin password immediately!
+
+## Configuration
+
+### Environment Variables
+
+All configuration is done through the `.env` file. Key settings:
+
+#### Server Configuration
+```env
+HOST=0.0.0.0              # Listen address
+PORT=8080                 # Listen port
+SSL_ENABLED=false         # Enable HTTPS
+```
+
+#### Authentication
+```env
+AUTH_METHODS=basic,digest # Supported auth methods
+JWT_SECRET_KEY=...        # Secret for sessions (required)
+SESSION_TIMEOUT=3600      # Session duration in seconds
+```
+
+#### WebDAV Settings
+```env
+WEBDAV_ROOT=./webdav         # Root directory for files
+MAX_FILE_SIZE=104857600      # Max file size (100MB)
+MAX_PROPFIND_DEPTH=3         # Depth limit for PROPFIND
+LOCK_TIMEOUT_DEFAULT=3600    # Default lock timeout
+```
+
+See `.env.example` for complete configuration options.
+
+## Usage
+
+### Connecting with Windows Explorer
+
+#### Method 1: Map Network Drive
+
+1. Open File Explorer
+2. Right-click "This PC" → "Map network drive"
+3. Choose a drive letter
+4. Enter the WebDAV URL:
+   ```
+   http://your-server:8080/
+   ```
+5. Check "Connect using different credentials"
+6. Enter your username and password
+7. Click "Finish"
+
+#### Method 2: Add Network Location
+
+1. Open File Explorer
+2. Right-click "This PC" → "Add a network location"
+3. Choose "Choose a custom network location"
+4. Enter the WebDAV URL:
+   ```
+   http://your-server:8080/
+   ```
+5. Enter credentials when prompted
+
+#### Windows with SSL (Recommended)
+
+For HTTPS connections:
+```
+https://your-server:8443/
+```
+
+**Note**: Windows requires port 443 for HTTPS WebDAV by default. To use other ports, modify Windows registry:
+```
+HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters
+BasicAuthLevel = 2
+```
+
+### Connecting with macOS Finder
+
+1. Open Finder
+2. Press `Cmd+K` (Go → Connect to Server)
+3. Enter the WebDAV URL:
+   ```
+   http://your-server:8080/
+   ```
+4. Click "Connect"
+5. Enter your credentials
+
+### Connecting with Linux (davfs2)
+
+1. Install davfs2:
+   ```bash
+   sudo apt-get install davfs2  # Ubuntu/Debian
+   ```
+
+2. Mount the WebDAV share:
+   ```bash
+   sudo mount -t davfs http://your-server:8080/ /mnt/webdav
+   ```
+
+3. Enter credentials when prompted
+
+### Command Line Tools
+
+#### Using curl
+
+**Upload a file:**
+```bash
+curl -u username:password -T file.txt http://localhost:8080/file.txt
+```
+
+**Download a file:**
+```bash
+curl -u username:password http://localhost:8080/file.txt -o file.txt
+```
+
+**Create a directory:**
+```bash
+curl -u username:password -X MKCOL http://localhost:8080/newdir/
+```
+
+**Delete a resource:**
+```bash
+curl -u username:password -X DELETE http://localhost:8080/file.txt
+```
+
+#### Using cadaver
+
+```bash
+cadaver http://localhost:8080/
+# Enter credentials
+dav:/> ls
+dav:/> put localfile.txt
+dav:/> get remotefile.txt
+dav:/> mkcol newfolder
+```
+
+## User Management
+
+### Creating Users Programmatically
+
+```python
+import asyncio
+from main import Database
+
+async def create_user():
+    db = Database('./webdav.db')
+    user_id = await db.create_user(
+        username='john',
+        password='SecurePass123!',
+        email='john@example.com',
+        role='user'
+    )
+    print(f"Created user with ID: {user_id}")
+
+asyncio.run(create_user())
+```
+
+### User Roles
+
+- **admin**: Full access to all features and user management
+- **user**: Standard user with access to their own directory
+- **readonly**: Read-only access (future implementation)
+
+### Directory Structure
+
+```
+webdav/
+├── users/
+│   ├── admin/          # Admin user directory
+│   ├── john/           # John's private directory
+│   └── jane/           # Jane's private directory
+├── shared/             # Shared between all users (optional)
+└── public/             # Public access (optional)
+```
+
+## Production Deployment
+
+### Using Gunicorn
+
+Create `gunicorn_config.py`:
+```python
+import multiprocessing
+
+bind = "0.0.0.0:8080"
+workers = multiprocessing.cpu_count() * 2 + 1
+worker_class = "aiohttp.GunicornWebWorker"
+keepalive = 30
+timeout = 60
+accesslog = "./logs/access.log"
+errorlog = "./logs/error.log"
+loglevel = "info"
+```
+
+Run with Gunicorn:
+```bash
+gunicorn main:init_app --config gunicorn_config.py
+```
+
+### Using Docker
+
+Create `Dockerfile`:
+```dockerfile
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application
+COPY . .
+
+# Create directories
+RUN mkdir -p /app/webdav /app/logs
+
+# Expose port
+EXPOSE 8080
+
+# Run application
+CMD ["python", "main.py"]
+```
+
+Create `docker-compose.yml`:
+```yaml
+version: '3.8'
+
+services:
+  webdav:
+    build: .
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./webdav:/app/webdav
+      - ./logs:/app/logs
+      - ./webdav.db:/app/webdav.db
+    environment:
+      - HOST=0.0.0.0
+      - PORT=8080
+      - DB_PATH=/app/webdav.db
+      - WEBDAV_ROOT=/app/webdav
+    restart: unless-stopped
+
+  # Optional: Redis for caching
+  redis:
+    image: redis:alpine
+    ports:
+      - "6379:6379"
+    restart: unless-stopped
+```
+
+Build and run:
+```bash
+docker-compose up -d
+```
+
+### Nginx Reverse Proxy
+
+Create `/etc/nginx/sites-available/webdav`:
+```nginx
+server {
+    listen 80;
+    server_name webdav.example.com;
+
+    # Redirect to HTTPS
+    return 301 https://$server_name$request_uri;
+}
+
+server {
+    listen 443 ssl http2;
+    server_name webdav.example.com;
+
+    ssl_certificate /etc/letsencrypt/live/webdav.example.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/webdav.example.com/privkey.pem;
+
+    # WebDAV specific settings
+    client_max_body_size 100M;
+    client_body_buffer_size 128k;
+
+    location / {
+        proxy_pass http://localhost:8080;
+        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;
+        
+        # WebDAV headers
+        proxy_set_header Destination $http_destination;
+        proxy_set_header Depth $http_depth;
+        
+        # Timeouts
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 60s;
+        proxy_read_timeout 60s;
+    }
+}
+```
+
+Enable and reload:
+```bash
+sudo ln -s /etc/nginx/sites-available/webdav /etc/nginx/sites-enabled/
+sudo nginx -t
+sudo systemctl reload nginx
+```
+
+## Security Best Practices
+
+### SSL/TLS Configuration
+
+1. **Always use HTTPS in production**
+2. Generate SSL certificates with Let's Encrypt:
+   ```bash
+   sudo certbot certonly --nginx -d webdav.example.com
+   ```
+3. Update `.env`:
+   ```env
+   SSL_ENABLED=true
+   SSL_CERT_PATH=/etc/letsencrypt/live/webdav.example.com/fullchain.pem
+   SSL_KEY_PATH=/etc/letsencrypt/live/webdav.example.com/privkey.pem
+   ```
+
+### Authentication
+
+- Use **Digest authentication** over Basic when possible
+- Enforce strong passwords (min length, complexity)
+- Enable rate limiting to prevent brute force attacks
+- Implement account lockout after failed attempts
+
+### Firewall Rules
+
+```bash
+# Allow only necessary ports
+sudo ufw allow 80/tcp
+sudo ufw allow 443/tcp
+sudo ufw enable
+```
+
+### Regular Updates
+
+```bash
+# Update dependencies
+pip install --upgrade -r requirements.txt
+
+# Backup database before updates
+cp webdav.db webdav.db.backup
+```
+
+## Monitoring and Logging
+
+### Log Files
+
+Logs are stored in `./logs/` directory:
+- `webdav.log` - Application logs
+- `access.log` - Access logs (requests)
+- `error.log` - Error logs
+
+### Log Format
+
+JSON-structured logs for easy parsing:
+```json
+{
+  "timestamp": "2025-01-15T10:30:45Z",
+  "level": "INFO",
+  "user": "john",
+  "method": "PROPFIND",
+  "path": "/documents/",
+  "status": 207,
+  "duration_ms": 45
+}
+```
+
+### Health Check
+
+Access the health check endpoint:
+```bash
+curl http://localhost:8080/health
+```
+
+## Troubleshooting
+
+### Windows Explorer Connection Issues
+
+**Problem**: "The network folder is no longer available"
+
+**Solutions**:
+1. Increase Windows WebClient timeout:
+   ```
+   Registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters
+   FileSizeLimitInBytes = DWORD: 0xFFFFFFFF
+   ```
+
+2. Enable Basic Authentication over HTTP (insecure - use only for testing):
+   ```
+   Registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters
+   BasicAuthLevel = 2
+   ```
+
+3. Restart WebClient service:
+   ```powershell
+   net stop webclient
+   net start webclient
+   ```
+
+**Problem**: "The specified server cannot perform the requested operation"
+
+**Solution**: Ensure the URL ends with a slash and doesn't include port 80:
+- ❌ `http://server:80/path`
+- ✅ `http://server/path/`
+
+### macOS Finder Issues
+
+**Problem**: Connection refused or timeout
+
+**Solutions**:
+1. Use HTTP URL with explicit protocol:
+   ```
+   http://server:8080/
+   ```
+
+2. Check firewall settings on server
+
+3. Try connecting via IP address instead of hostname
+
+### Performance Issues
+
+**Problem**: Slow PROPFIND responses
+
+**Solutions**:
+1. Reduce `MAX_PROPFIND_DEPTH` in `.env`:
+   ```env
+   MAX_PROPFIND_DEPTH=1
+   ```
+
+2. Enable caching with Redis:
+   ```env
+   CACHE_ENABLED=true
+   REDIS_HOST=localhost
+   ```
+
+3. Increase worker processes:
+   ```env
+   WORKERS=8
+   ```
+
+### Database Locked Errors
+
+**Problem**: "database is locked" errors
+
+**Solutions**:
+1. Enable WAL mode (automatic in code)
+2. Ensure only one process accesses the database
+3. Use separate databases for multiple instances
+
+## API Documentation
+
+### WebDAV Methods
+
+#### PROPFIND - Property Discovery
+
+```http
+PROPFIND /documents/ HTTP/1.1
+Depth: 1
+Content-Type: application/xml
+
+<?xml version="1.0"?>
+<D:propfind xmlns:D="DAV:">
+    <D:allprop/>
+</D:propfind>
+```
+
+#### PROPPATCH - Property Modification
+
+```http
+PROPPATCH /file.txt HTTP/1.1
+Content-Type: application/xml
+
+<?xml version="1.0"?>
+<D:propertyupdate xmlns:D="DAV:">
+    <D:set>
+        <D:prop>
+            <D:displayname>My Document</D:displayname>
+        </D:prop>
+    </D:set>
+</D:propertyupdate>
+```
+
+#### LOCK - Resource Locking
+
+```http
+LOCK /file.txt HTTP/1.1
+Timeout: Second-3600
+Content-Type: application/xml
+
+<?xml version="1.0"?>
+<D:lockinfo xmlns:D="DAV:">
+    <D:lockscope><D:exclusive/></D:lockscope>
+    <D:locktype><D:write/></D:locktype>
+    <D:owner>
+        <D:href>mailto:john@example.com</D:href>
+    </D:owner>
+</D:lockinfo>
+```
+
+## Development
+
+### Running Tests
+
+```bash
+# Install test dependencies
+pip install pytest pytest-asyncio pytest-aiohttp pytest-cov
+
+# Run tests
+pytest tests/ -v
+
+# Run with coverage
+pytest tests/ --cov=. --cov-report=html
+```
+
+### Code Style
+
+```bash
+# Format code
+black main.py
+
+# Lint code
+flake8 main.py
+
+# Type checking
+mypy main.py
+```
+
+### Contributing
+
+1. Fork the repository
+2. Create a feature branch
+3. Make your changes
+4. Add tests
+5. Submit a pull request
+
+## License
+
+MIT License - See LICENSE file for details
+
+## Support
+
+For issues, questions, or contributions:
+- GitHub Issues: [Create an issue]
+- Documentation: [Wiki]
+- Community: [Discussions]
+
+## Changelog
+
+### Version 1.0.0 (2025-01-15)
+- Initial release
+- Full RFC 4918 compliance
+- Windows Explorer compatibility
+- Multi-user support with SQLite backend
+- Basic and Digest authentication
+- Resource locking
+- Custom properties
+- Production-ready with Gunicorn support
+
+## Acknowledgments
+
+- RFC 4918 - HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV)
+- aiohttp - Async HTTP client/server framework
+- Python community
+
+---
+
+**Made with ❤️ for the WebDAV community**
--- a/docker-compose.yml
+++ b/docker-compose.yml
@ -0,0 +1,145 @@
+version: '3.8'
+
+# ============================================================================
+# WebDAV Server - Docker Compose Configuration
+# ============================================================================
+
+services:
+  # --------------------------------------------------------------------------
+  # WebDAV Server
+  # --------------------------------------------------------------------------
+  webdav:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: webdav-server
+    restart: unless-stopped
+    
+    ports:
+      - "8080:8080"
+    
+    volumes:
+      # Persistent storage for user files
+      - ./webdav:/app/webdav
+      
+      # Database persistence
+      - ./webdav.db:/app/webdav.db
+      
+      # Logs
+      - ./logs:/app/logs
+      
+      # Backups
+      - ./backups:/app/backups
+      
+      # Configuration (optional - uncomment to override)
+      # - ./.env:/app/.env:ro
+    
+    environment:
+      # Server Configuration
+      - HOST=0.0.0.0
+      - PORT=8080
+      
+      # Database
+      - DB_PATH=/app/webdav.db
+      
+      # WebDAV Root
+      - WEBDAV_ROOT=/app/webdav
+      
+      # Authentication
+      - AUTH_METHODS=basic,digest
+      - SESSION_TIMEOUT=3600
+      
+      # Performance
+      - MAX_CONNECTIONS=1000
+      - WORKERS=4
+      
+      # Logging
+      - LOG_LEVEL=INFO
+      - LOG_FILE=/app/logs/webdav.log
+      
+      # Cache (if Redis enabled)
+      - CACHE_ENABLED=false
+      - REDIS_HOST=redis
+      - REDIS_PORT=6379
+    
+    networks:
+      - webdav-network
+    
+    depends_on:
+      - redis
+    
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+  
+  # --------------------------------------------------------------------------
+  # Redis Cache (Optional but recommended for production)
+  # --------------------------------------------------------------------------
+  redis:
+    image: redis:7-alpine
+    container_name: webdav-redis
+    restart: unless-stopped
+    
+    ports:
+      - "6379:6379"
+    
+    volumes:
+      - redis-data:/data
+    
+    command: redis-server --appendonly yes --maxmemory 256mb --maxmemory-policy allkeys-lru
+    
+    networks:
+      - webdav-network
+    
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+  
+  # --------------------------------------------------------------------------
+  # Nginx Reverse Proxy with SSL (Production)
+  # --------------------------------------------------------------------------
+  nginx:
+    image: nginx:alpine
+    container_name: webdav-nginx
+    restart: unless-stopped
+    
+    ports:
+      - "80:80"
+      - "443:443"
+    
+    volumes:
+      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
+      - ./nginx/conf.d:/etc/nginx/conf.d:ro
+      - ./nginx/ssl:/etc/nginx/ssl:ro
+      - ./logs/nginx:/var/log/nginx
+    
+    networks:
+      - webdav-network
+    
+    depends_on:
+      - webdav
+    
+    healthcheck:
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost/"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+# ============================================================================
+# Networks
+# ============================================================================
+networks:
+  webdav-network:
+    driver: bridge
+
+# ============================================================================
+# Volumes
+# ============================================================================
+volumes:
+  redis-data:
+    driver: local
--- a/gunicorn_config.py
+++ b/gunicorn_config.py
@ -0,0 +1,223 @@
+"""
+Gunicorn Configuration for WebDAV Server
+Production-grade WSGI server configuration with aiohttp worker
+"""
+
+import os
+import multiprocessing
+
+# ============================================================================
+# Server Socket
+# ============================================================================
+
+bind = f"{os.getenv('HOST', '0.0.0.0')}:{os.getenv('PORT', '8080')}"
+backlog = 2048
+
+# ============================================================================
+# Worker Processes
+# ============================================================================
+
+# Number of worker processes
+workers = int(os.getenv('WORKERS', multiprocessing.cpu_count() * 2 + 1))
+
+# Worker class - MUST be aiohttp.GunicornWebWorker for aiohttp
+worker_class = 'aiohttp.GunicornWebWorker'
+
+# Worker connections (only for async workers)
+worker_connections = int(os.getenv('WORKER_CONNECTIONS', 1024))
+
+# Maximum requests a worker will process before restarting (prevents memory leaks)
+max_requests = int(os.getenv('MAX_REQUESTS', 10000))
+max_requests_jitter = int(os.getenv('MAX_REQUESTS_JITTER', 1000))
+
+# Worker timeout in seconds
+timeout = int(os.getenv('WORKER_TIMEOUT', 60))
+
+# Graceful timeout for workers
+graceful_timeout = int(os.getenv('GRACEFUL_TIMEOUT', 30))
+
+# Keep-alive timeout
+keepalive = int(os.getenv('KEEPALIVE_TIMEOUT', 30))
+
+# ============================================================================
+# Logging
+# ============================================================================
+
+# Access log
+accesslog = os.getenv('ACCESS_LOG_FILE', './logs/gunicorn_access.log')
+access_log_format = '%(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s" %(D)s'
+
+# Error log
+errorlog = os.getenv('ERROR_LOG_FILE', './logs/gunicorn_error.log')
+
+# Log level
+loglevel = os.getenv('LOG_LEVEL', 'info').lower()
+
+# Capture output from workers
+capture_output = True
+
+# Enable log rotation
+logconfig_dict = {
+    'version': 1,
+    'disable_existing_loggers': False,
+    'formatters': {
+        'generic': {
+            'format': '%(asctime)s [%(process)d] [%(levelname)s] %(message)s',
+            'datefmt': '%Y-%m-%d %H:%M:%S',
+            'class': 'logging.Formatter'
+        },
+        'access': {
+            'format': '%(message)s',
+            'class': 'logging.Formatter'
+        }
+    },
+    'handlers': {
+        'console': {
+            'class': 'logging.StreamHandler',
+            'formatter': 'generic',
+            'stream': 'ext://sys.stdout'
+        },
+        'error_file': {
+            'class': 'logging.handlers.RotatingFileHandler',
+            'formatter': 'generic',
+            'filename': errorlog,
+            'maxBytes': 10485760,  # 10MB
+            'backupCount': 5
+        },
+        'access_file': {
+            'class': 'logging.handlers.RotatingFileHandler',
+            'formatter': 'access',
+            'filename': accesslog,
+            'maxBytes': 10485760,  # 10MB
+            'backupCount': 5
+        }
+    },
+    'loggers': {
+        'gunicorn.error': {
+            'handlers': ['console', 'error_file'],
+            'level': loglevel.upper(),
+            'propagate': False
+        },
+        'gunicorn.access': {
+            'handlers': ['access_file'],
+            'level': 'INFO',
+            'propagate': False
+        }
+    },
+    'root': {
+        'level': loglevel.upper(),
+        'handlers': ['console', 'error_file']
+    }
+}
+
+# ============================================================================
+# Process Naming
+# ============================================================================
+
+proc_name = 'webdav_server'
+
+# ============================================================================
+# Server Mechanics
+# ============================================================================
+
+# Daemon mode (run in background)
+daemon = os.getenv('DAEMON', 'false').lower() == 'true'
+
+# PID file
+pidfile = os.getenv('PID_FILE', './gunicorn.pid')
+
+# User and group to run workers
+user = os.getenv('USER', None)
+group = os.getenv('GROUP', None)
+
+# Directory to switch to before loading apps
+chdir = os.getenv('CHDIR', '.')
+
+# Environment variables to set for workers
+raw_env = [
+    f"WEBDAV_ENV={os.getenv('WEBDAV_ENV', 'production')}"
+]
+
+# ============================================================================
+# Server Hooks
+# ============================================================================
+
+def on_starting(server):
+    """Called just before the master process is initialized."""
+    server.log.info("Starting WebDAV Server...")
+    
+    # Create necessary directories
+    os.makedirs('./logs', exist_ok=True)
+    os.makedirs('./webdav', exist_ok=True)
+    os.makedirs('./backups', exist_ok=True)
+
+
+def on_reload(server):
+    """Called to recycle workers during a reload."""
+    server.log.info("Reloading WebDAV Server...")
+
+
+def when_ready(server):
+    """Called just after the server is started."""
+    server.log.info(f"WebDAV Server is ready. Listening on: {bind}")
+    server.log.info(f"Workers: {workers}")
+    server.log.info(f"Worker class: {worker_class}")
+
+
+def pre_fork(server, worker):
+    """Called just before a worker is forked."""
+    pass
+
+
+def post_fork(server, worker):
+    """Called just after a worker has been forked."""
+    server.log.info(f"Worker spawned (pid: {worker.pid})")
+
+
+def pre_exec(server):
+    """Called just before a new master process is forked."""
+    server.log.info("Forked child, re-executing.")
+
+
+def worker_int(worker):
+    """Called when a worker receives the SIGINT or SIGQUIT signal."""
+    worker.log.info(f"Worker received INT or QUIT signal (pid: {worker.pid})")
+
+
+def worker_abort(worker):
+    """Called when a worker receives the SIGABRT signal."""
+    worker.log.info(f"Worker received SIGABRT signal (pid: {worker.pid})")
+
+
+def pre_request(worker, req):
+    """Called just before a worker processes the request."""
+    worker.log.debug(f"{req.method} {req.path}")
+
+
+def post_request(worker, req, environ, resp):
+    """Called after a worker processes the request."""
+    pass
+
+
+def worker_exit(server, worker):
+    """Called just after a worker has been exited."""
+    server.log.info(f"Worker exited (pid: {worker.pid})")
+
+
+def on_exit(server):
+    """Called just before exiting Gunicorn."""
+    server.log.info("Shutting down WebDAV Server...")
+
+# ============================================================================
+# SSL Configuration (if needed)
+# ============================================================================
+
+# Uncomment and configure for SSL support
+# keyfile = '/path/to/key.pem'
+# certfile = '/path/to/cert.pem'
+# ssl_version = 'TLSv1_2'
+# cert_reqs = 0  # ssl.CERT_NONE
+# ca_certs = None
+# suppress_ragged_eofs = True
+# do_handshake_on_connect = False
+# ciphers = 'TLSv1'
--- a/main.py
+++ b/main.py
--- a/nginx.conf
+++ b/nginx.conf
@ -0,0 +1,153 @@
+# ============================================================================
+# Nginx Configuration for WebDAV Server
+# Place this in: /etc/nginx/conf.d/webdav.conf
+# ============================================================================
+
+# Upstream backend
+upstream webdav_backend {
+    server webdav:8080 max_fails=3 fail_timeout=30s;
+    keepalive 32;
+}
+
+# HTTP Server - Redirect to HTTPS
+server {
+    listen 80;
+    listen [::]:80;
+    server_name webdav.example.com;  # Change to your domain
+
+    # Let's Encrypt ACME challenge
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+
+    # Redirect all other traffic to HTTPS
+    location / {
+        return 301 https://$server_name$request_uri;
+    }
+}
+
+# HTTPS Server - Main WebDAV
+server {
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+    server_name webdav.example.com;  # Change to your domain
+
+    # SSL Configuration
+    ssl_certificate /etc/nginx/ssl/fullchain.pem;
+    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
+    
+    # SSL Security Settings
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384';
+    ssl_prefer_server_ciphers on;
+    ssl_session_cache shared:SSL:10m;
+    ssl_session_timeout 10m;
+    ssl_stapling on;
+    ssl_stapling_verify on;
+    
+    # Security Headers
+    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+
+    # WebDAV Specific Settings
+    client_max_body_size 1G;                # Maximum file size
+    client_body_buffer_size 128k;
+    client_body_timeout 300s;               # Timeout for client body
+    client_header_timeout 60s;
+    send_timeout 300s;                      # Timeout for sending response
+    
+    # Proxy buffering (disable for large files)
+    proxy_buffering off;
+    proxy_request_buffering off;
+    
+    # Timeouts
+    proxy_connect_timeout 60s;
+    proxy_send_timeout 300s;
+    proxy_read_timeout 300s;
+
+    # Logging
+    access_log /var/log/nginx/webdav_access.log combined;
+    error_log /var/log/nginx/webdav_error.log warn;
+
+    # Root location - WebDAV
+    location / {
+        # Proxy to backend
+        proxy_pass http://webdav_backend;
+        
+        # Standard proxy headers
+        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_set_header X-Forwarded-Host $host;
+        proxy_set_header X-Forwarded-Port $server_port;
+        
+        # WebDAV specific headers
+        proxy_set_header Destination $http_destination;
+        proxy_set_header Depth $http_depth;
+        proxy_set_header Overwrite $http_overwrite;
+        proxy_set_header Lock-Token $http_lock_token;
+        proxy_set_header Timeout $http_timeout;
+        proxy_set_header If $http_if;
+        
+        # HTTP 1.1 support
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+        
+        # Disable redirects
+        proxy_redirect off;
+        
+        # Handle errors
+        proxy_intercept_errors off;
+    }
+    
+    # Health check endpoint
+    location /health {
+        proxy_pass http://webdav_backend/health;
+        access_log off;
+    }
+    
+    # Deny access to hidden files
+    location ~ /\. {
+        deny all;
+        access_log off;
+        log_not_found off;
+    }
+}
+
+# ============================================================================
+# HTTP Configuration without SSL (for development only)
+# ============================================================================
+
+# Uncomment this section for development without SSL
+# server {
+#     listen 80;
+#     listen [::]:80;
+#     server_name webdav.example.com;
+#
+#     client_max_body_size 1G;
+#     client_body_buffer_size 128k;
+#     client_body_timeout 300s;
+#     send_timeout 300s;
+#
+#     location / {
+#         proxy_pass http://webdav_backend;
+#         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;
+#         
+#         # WebDAV headers
+#         proxy_set_header Destination $http_destination;
+#         proxy_set_header Depth $http_depth;
+#         proxy_set_header Overwrite $http_overwrite;
+#         proxy_set_header Lock-Token $http_lock_token;
+#         
+#         proxy_http_version 1.1;
+#         proxy_set_header Connection "";
+#         proxy_redirect off;
+#         proxy_buffering off;
+#     }
+# }
--- a/requirements.txt
+++ b/requirements.txt
@ -0,0 +1,40 @@
+# Core Web Framework
+aiohttp>=3.9.0
+aiofiles>=23.2.0
+aiohttp-session>=2.12.0
+aiohttp-security>=0.4.0
+
+# Security and Cryptography
+cryptography>=41.0.0
+PyJWT>=2.8.0
+
+# Environment and Configuration
+python-dotenv>=1.0.0
+
+# XML Processing
+lxml>=4.9.0
+
+# Template Engine (for web interface)
+Jinja2>=3.1.2
+MarkupSafe>=2.1.3
+
+# Production Server
+gunicorn>=21.2.0
+
+# Testing
+pytest>=7.4.0
+pytest-asyncio>=0.21.0
+pytest-aiohttp>=1.0.5
+pytest-cov>=4.1.0
+
+# Development Tools
+black>=23.7.0
+flake8>=6.1.0
+mypy>=1.5.0
+
+# Optional: Redis for caching
+redis>=5.0.0
+aioredis>=2.0.1
+
+# Optional: Performance monitoring
+prometheus-client>=0.17.1
--- a/setup.sh
+++ b/setup.sh
@ -0,0 +1,362 @@
+#!/bin/bash
+
+# ============================================================================
+# WebDAV Server Installation and Setup Script
+# ============================================================================
+
+set -e  # Exit on error
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Functions
+print_info() {
+    echo -e "${BLUE}ℹ ${1}${NC}"
+}
+
+print_success() {
+    echo -e "${GREEN}✓ ${1}${NC}"
+}
+
+print_warning() {
+    echo -e "${YELLOW}⚠ ${1}${NC}"
+}
+
+print_error() {
+    echo -e "${RED}✗ ${1}${NC}"
+}
+
+print_header() {
+    echo ""
+    echo -e "${BLUE}╔══════════════════════════════════════════════════════════════╗${NC}"
+    echo -e "${BLUE}║          WebDAV Server Installation Script                  ║${NC}"
+    echo -e "${BLUE}╚══════════════════════════════════════════════════════════════╝${NC}"
+    echo ""
+}
+
+# Check if running as root
+check_root() {
+    if [ "$EUID" -eq 0 ]; then 
+        print_warning "Running as root. It's recommended to run as a regular user."
+        read -p "Continue? (y/n) " -n 1 -r
+        echo
+        if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+            exit 1
+        fi
+    fi
+}
+
+# Check system requirements
+check_requirements() {
+    print_info "Checking system requirements..."
+    
+    # Check Python version
+    if command -v python3 &> /dev/null; then
+        PYTHON_VERSION=$(python3 --version | awk '{print $2}')
+        print_success "Python $PYTHON_VERSION found"
+    else
+        print_error "Python 3 not found. Please install Python 3.8 or higher."
+        exit 1
+    fi
+    
+    # Check pip
+    if command -v pip3 &> /dev/null; then
+        print_success "pip3 found"
+    else
+        print_warning "pip3 not found. Installing..."
+        python3 -m ensurepip --upgrade
+    fi
+    
+    # Check git (optional)
+    if command -v git &> /dev/null; then
+        print_success "git found"
+    else
+        print_warning "git not found. Some features may be limited."
+    fi
+}
+
+# Install system dependencies
+install_dependencies() {
+    print_info "Installing system dependencies..."
+    
+    if [ -f /etc/debian_version ]; then
+        # Debian/Ubuntu
+        sudo apt-get update
+        sudo apt-get install -y python3-dev python3-venv build-essential libxml2-dev libxslt-dev
+        print_success "Dependencies installed (Debian/Ubuntu)"
+    elif [ -f /etc/redhat-release ]; then
+        # RHEL/CentOS/Fedora
+        sudo yum install -y python3-devel gcc gcc-c++ libxml2-devel libxslt-devel
+        print_success "Dependencies installed (RHEL/CentOS/Fedora)"
+    else
+        print_warning "Unknown distribution. Please install python3-dev, build-essential manually."
+    fi
+}
+
+# Setup installation directory
+setup_directory() {
+    print_info "Setting up installation directory..."
+    
+    read -p "Installation directory [./webdav-server]: " INSTALL_DIR
+    INSTALL_DIR=${INSTALL_DIR:-./webdav-server}
+    
+    if [ -d "$INSTALL_DIR" ]; then
+        print_warning "Directory $INSTALL_DIR already exists."
+        read -p "Continue and potentially overwrite files? (y/n) " -n 1 -r
+        echo
+        if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+            exit 1
+        fi
+    else
+        mkdir -p "$INSTALL_DIR"
+    fi
+    
+    cd "$INSTALL_DIR"
+    print_success "Using directory: $(pwd)"
+}
+
+# Create virtual environment
+setup_venv() {
+    print_info "Creating Python virtual environment..."
+    
+    python3 -m venv venv
+    source venv/bin/activate
+    
+    pip install --upgrade pip setuptools wheel
+    print_success "Virtual environment created"
+}
+
+# Install Python packages
+install_packages() {
+    print_info "Installing Python packages..."
+    
+    source venv/bin/activate
+    
+    if [ -f requirements.txt ]; then
+        pip install -r requirements.txt
+        print_success "Packages installed from requirements.txt"
+    else
+        print_warning "requirements.txt not found. Installing core packages..."
+        pip install aiohttp aiofiles aiohttp-session cryptography python-dotenv lxml gunicorn
+        print_success "Core packages installed"
+    fi
+}
+
+# Setup configuration
+setup_config() {
+    print_info "Setting up configuration..."
+    
+    if [ ! -f .env ]; then
+        if [ -f .env.example ]; then
+            cp .env.example .env
+            print_success "Created .env from .env.example"
+        else
+            print_warning ".env.example not found. Creating basic .env..."
+            cat > .env << EOF
+HOST=0.0.0.0
+PORT=8080
+DB_PATH=./webdav.db
+WEBDAV_ROOT=./webdav
+AUTH_METHODS=basic,digest
+JWT_SECRET_KEY=$(python3 -c "import secrets; print(secrets.token_hex(32))")
+SESSION_TIMEOUT=3600
+MAX_FILE_SIZE=104857600
+LOG_LEVEL=INFO
+EOF
+            print_success "Created basic .env file"
+        fi
+    else
+        print_warning ".env already exists. Skipping..."
+    fi
+    
+    # Generate secret key if needed
+    if grep -q "your-secret-key-here" .env 2>/dev/null; then
+        SECRET_KEY=$(python3 -c "import secrets; print(secrets.token_hex(32))")
+        if [[ "$OSTYPE" == "darwin"* ]]; then
+            # macOS
+            sed -i '' "s/your-secret-key-here-change-this-in-production/$SECRET_KEY/" .env
+        else
+            # Linux
+            sed -i "s/your-secret-key-here-change-this-in-production/$SECRET_KEY/" .env
+        fi
+        print_success "Generated new JWT secret key"
+    fi
+}
+
+# Create directory structure
+create_directories() {
+    print_info "Creating directory structure..."
+    
+    mkdir -p webdav/users
+    mkdir -p webdav/shared
+    mkdir -p logs
+    mkdir -p backups
+    
+    print_success "Directory structure created"
+}
+
+# Initialize database
+init_database() {
+    print_info "Initializing database..."
+    
+    source venv/bin/activate
+    python3 << EOF
+import asyncio
+from main import Database, create_default_user
+
+async def init():
+    db = Database('./webdav.db')
+    await create_default_user(db)
+
+asyncio.run(init())
+EOF
+    
+    print_success "Database initialized"
+}
+
+# Setup systemd service (optional)
+setup_systemd() {
+    print_info "Would you like to set up systemd service? (requires sudo)"
+    read -p "Setup systemd service? (y/n) " -n 1 -r
+    echo
+    
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+        # Create webdav user if doesn't exist
+        if ! id -u webdav &>/dev/null; then
+            sudo useradd -r -s /bin/false webdav
+            print_success "Created webdav user"
+        fi
+        
+        # Copy service file
+        if [ -f webdav.service ]; then
+            sudo cp webdav.service /etc/systemd/system/
+            sudo systemctl daemon-reload
+            print_success "Systemd service installed"
+            
+            print_info "To enable and start the service:"
+            echo "  sudo systemctl enable webdav"
+            echo "  sudo systemctl start webdav"
+            echo "  sudo systemctl status webdav"
+        else
+            print_warning "webdav.service not found. Skipping..."
+        fi
+    fi
+}
+
+# Setup nginx (optional)
+setup_nginx() {
+    print_info "Would you like to set up Nginx reverse proxy?"
+    read -p "Setup Nginx? (y/n) " -n 1 -r
+    echo
+    
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+        if command -v nginx &> /dev/null; then
+            read -p "Enter your domain name: " DOMAIN_NAME
+            
+            if [ -f nginx.conf ]; then
+                mkdir -p nginx/conf.d nginx/ssl
+                sed "s/webdav.example.com/$DOMAIN_NAME/g" nginx.conf > nginx/conf.d/webdav.conf
+                
+                print_success "Nginx configuration created"
+                print_info "Configuration saved to: nginx/conf.d/webdav.conf"
+                print_warning "Don't forget to configure SSL certificates!"
+            else
+                print_warning "nginx.conf template not found"
+            fi
+        else
+            print_warning "Nginx not installed. Skipping..."
+        fi
+    fi
+}
+
+# Setup Docker (optional)
+setup_docker() {
+    print_info "Would you like to set up Docker deployment?"
+    read -p "Setup Docker? (y/n) " -n 1 -r
+    echo
+    
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+        if command -v docker &> /dev/null; then
+            if [ -f Dockerfile ] && [ -f docker-compose.yml ]; then
+                print_info "Building Docker image..."
+                docker-compose build
+                print_success "Docker image built"
+                
+                print_info "To start the service:"
+                echo "  docker-compose up -d"
+                echo "  docker-compose logs -f"
+            else
+                print_warning "Dockerfile or docker-compose.yml not found"
+            fi
+        else
+            print_warning "Docker not installed. Skipping..."
+        fi
+    fi
+}
+
+# Final instructions
+print_instructions() {
+    echo ""
+    echo -e "${GREEN}╔══════════════════════════════════════════════════════════════╗${NC}"
+    echo -e "${GREEN}║                 Installation Complete!                      ║${NC}"
+    echo -e "${GREEN}╚══════════════════════════════════════════════════════════════╝${NC}"
+    echo ""
+    
+    print_info "Getting Started:"
+    echo ""
+    echo "1. Activate virtual environment:"
+    echo "   source venv/bin/activate"
+    echo ""
+    echo "2. Start the server:"
+    echo "   python main.py"
+    echo "   OR with Gunicorn (production):"
+    echo "   gunicorn main:init_app --config gunicorn_config.py"
+    echo ""
+    echo "3. Access WebDAV server:"
+    echo "   http://localhost:8080/"
+    echo ""
+    echo "4. Default credentials:"
+    echo "   Username: admin"
+    echo "   Password: admin123"
+    echo "   ⚠️  CHANGE THIS PASSWORD IMMEDIATELY!"
+    echo ""
+    echo "5. Manage users with CLI:"
+    echo "   python webdav_cli.py user create newuser"
+    echo "   python webdav_cli.py user list"
+    echo "   python webdav_cli.py stats"
+    echo ""
+    print_warning "Remember to:"
+    echo "  • Change the default admin password"
+    echo "  • Configure SSL/TLS for production"
+    echo "  • Set up firewall rules"
+    echo "  • Configure backups"
+    echo ""
+}
+
+# Main installation process
+main() {
+    print_header
+    
+    check_root
+    check_requirements
+    install_dependencies
+    setup_directory
+    setup_venv
+    install_packages
+    setup_config
+    create_directories
+    init_database
+    setup_systemd
+    setup_nginx
+    setup_docker
+    print_instructions
+    
+    print_success "Installation complete!"
+}
+
+# Run main function
+main
--- a/test_webdav.py
+++ b/test_webdav.py
@ -0,0 +1,565 @@
+"""
+Comprehensive Test Suite for WebDAV Server
+Tests all WebDAV methods, authentication, and edge cases
+"""
+
+import pytest
+import asyncio
+import tempfile
+import shutil
+from pathlib import Path
+from aiohttp import web
+from aiohttp.test_utils import TestClient, TestServer
+import base64
+
+# Import the main application
+import sys
+sys.path.insert(0, '.')
+from main import Database, AuthHandler, WebDAVHandler, init_app, Config
+
+
+# ============================================================================
+# Fixtures
+# ============================================================================
+
+@pytest.fixture
+async def temp_dir():
+    """Create temporary directory for tests"""
+    temp_path = Path(tempfile.mkdtemp())
+    yield temp_path
+    shutil.rmtree(temp_path, ignore_errors=True)
+
+
+@pytest.fixture
+async def test_db(temp_dir):
+    """Create test database"""
+    db_path = temp_dir / 'test.db'
+    db = Database(str(db_path))
+    
+    # Create test users
+    await db.create_user('testuser', 'testpass123', 'test@example.com', 'user')
+    await db.create_user('admin', 'adminpass123', 'admin@example.com', 'admin')
+    
+    yield db
+
+
+@pytest.fixture
+async def test_app(test_db, temp_dir, monkeypatch):
+    """Create test application"""
+    # Override config for testing
+    monkeypatch.setattr(Config, 'DB_PATH', str(temp_dir / 'test.db'))
+    monkeypatch.setattr(Config, 'WEBDAV_ROOT', str(temp_dir / 'webdav'))
+    
+    # Create webdav root
+    (temp_dir / 'webdav' / 'users' / 'testuser').mkdir(parents=True, exist_ok=True)
+    (temp_dir / 'webdav' / 'users' / 'admin').mkdir(parents=True, exist_ok=True)
+    
+    app = await init_app()
+    app['db'] = test_db
+    
+    yield app
+
+
+@pytest.fixture
+async def client(test_app):
+    """Create test client"""
+    server = TestServer(test_app)
+    client = TestClient(server)
+    
+    await client.start_server()
+    yield client
+    await client.close()
+
+
+@pytest.fixture
+def basic_auth_header():
+    """Create basic auth header"""
+    credentials = base64.b64encode(b'testuser:testpass123').decode('utf-8')
+    return {'Authorization': f'Basic {credentials}'}
+
+
+# ============================================================================
+# Authentication Tests
+# ============================================================================
+
+class TestAuthentication:
+    """Test authentication mechanisms"""
+    
+    @pytest.mark.asyncio
+    async def test_no_auth_returns_401(self, client):
+        """Test that requests without auth return 401"""
+        response = await client.get('/')
+        assert response.status == 401
+        assert 'WWW-Authenticate' in response.headers
+    
+    @pytest.mark.asyncio
+    async def test_basic_auth_success(self, client, basic_auth_header):
+        """Test successful basic authentication"""
+        response = await client.get('/', headers=basic_auth_header)
+        assert response.status in [200, 207]  # 207 for PROPFIND
+    
+    @pytest.mark.asyncio
+    async def test_basic_auth_invalid_credentials(self, client):
+        """Test basic auth with invalid credentials"""
+        credentials = base64.b64encode(b'testuser:wrongpass').decode('utf-8')
+        headers = {'Authorization': f'Basic {credentials}'}
+        response = await client.get('/', headers=headers)
+        assert response.status == 401
+    
+    @pytest.mark.asyncio
+    async def test_basic_auth_malformed(self, client):
+        """Test basic auth with malformed header"""
+        headers = {'Authorization': 'Basic invalid-base64'}
+        response = await client.get('/', headers=headers)
+        assert response.status == 401
+
+
+# ============================================================================
+# HTTP Methods Tests
+# ============================================================================
+
+class TestHTTPMethods:
+    """Test standard HTTP methods"""
+    
+    @pytest.mark.asyncio
+    async def test_options(self, client, basic_auth_header):
+        """Test OPTIONS method"""
+        response = await client.options('/', headers=basic_auth_header)
+        assert response.status == 200
+        assert 'DAV' in response.headers
+        assert 'Allow' in response.headers
+        
+        allow = response.headers['Allow']
+        assert 'PROPFIND' in allow
+        assert 'PROPPATCH' in allow
+        assert 'MKCOL' in allow
+        assert 'LOCK' in allow
+        assert 'UNLOCK' in allow
+    
+    @pytest.mark.asyncio
+    async def test_get_nonexistent_file(self, client, basic_auth_header):
+        """Test GET on nonexistent file"""
+        response = await client.get('/nonexistent.txt', headers=basic_auth_header)
+        assert response.status == 404
+    
+    @pytest.mark.asyncio
+    async def test_put_and_get_file(self, client, basic_auth_header):
+        """Test PUT and GET file"""
+        content = b'Hello, WebDAV!'
+        
+        # PUT file
+        put_response = await client.put(
+            '/test.txt',
+            data=content,
+            headers=basic_auth_header
+        )
+        assert put_response.status in [201, 204]
+        
+        # GET file
+        get_response = await client.get('/test.txt', headers=basic_auth_header)
+        assert get_response.status == 200
+        
+        body = await get_response.read()
+        assert body == content
+    
+    @pytest.mark.asyncio
+    async def test_head_file(self, client, basic_auth_header):
+        """Test HEAD method"""
+        # Create a file first
+        content = b'Test content'
+        await client.put('/test.txt', data=content, headers=basic_auth_header)
+        
+        # HEAD request
+        response = await client.head('/test.txt', headers=basic_auth_header)
+        assert response.status == 200
+        assert 'Content-Length' in response.headers
+        assert int(response.headers['Content-Length']) == len(content)
+        
+        # Body should be empty
+        body = await response.read()
+        assert body == b''
+    
+    @pytest.mark.asyncio
+    async def test_delete_file(self, client, basic_auth_header):
+        """Test DELETE method"""
+        # Create a file
+        await client.put('/test.txt', data=b'content', headers=basic_auth_header)
+        
+        # Delete it
+        response = await client.delete('/test.txt', headers=basic_auth_header)
+        assert response.status == 204
+        
+        # Verify it's gone
+        get_response = await client.get('/test.txt', headers=basic_auth_header)
+        assert get_response.status == 404
+
+
+# ============================================================================
+# WebDAV Methods Tests
+# ============================================================================
+
+class TestWebDAVMethods:
+    """Test WebDAV-specific methods"""
+    
+    @pytest.mark.asyncio
+    async def test_mkcol(self, client, basic_auth_header):
+        """Test MKCOL (create collection)"""
+        response = await client.request(
+            'MKCOL',
+            '/newdir/',
+            headers=basic_auth_header
+        )
+        assert response.status == 201
+        
+        # Verify directory was created with PROPFIND
+        propfind_response = await client.request(
+            'PROPFIND',
+            '/newdir/',
+            headers={**basic_auth_header, 'Depth': '0'}
+        )
+        assert propfind_response.status == 207
+    
+    @pytest.mark.asyncio
+    async def test_mkcol_already_exists(self, client, basic_auth_header):
+        """Test MKCOL on existing directory"""
+        # Create directory
+        await client.request('MKCOL', '/testdir/', headers=basic_auth_header)
+        
+        # Try to create again
+        response = await client.request('MKCOL', '/testdir/', headers=basic_auth_header)
+        assert response.status == 405  # Method Not Allowed
+    
+    @pytest.mark.asyncio
+    async def test_propfind_depth_0(self, client, basic_auth_header):
+        """Test PROPFIND with depth 0"""
+        # Create a file
+        await client.put('/test.txt', data=b'content', headers=basic_auth_header)
+        
+        # PROPFIND with depth 0
+        propfind_body = b'''<?xml version="1.0"?>
+        <D:propfind xmlns:D="DAV:">
+            <D:allprop/>
+        </D:propfind>'''
+        
+        response = await client.request(
+            'PROPFIND',
+            '/test.txt',
+            data=propfind_body,
+            headers={**basic_auth_header, 'Depth': '0', 'Content-Type': 'application/xml'}
+        )
+        
+        assert response.status == 207
+        body = await response.text()
+        assert 'multistatus' in body
+        assert 'test.txt' in body
+    
+    @pytest.mark.asyncio
+    async def test_propfind_depth_1(self, client, basic_auth_header):
+        """Test PROPFIND with depth 1"""
+        # Create directory with files
+        await client.request('MKCOL', '/testdir/', headers=basic_auth_header)
+        await client.put('/testdir/file1.txt', data=b'content1', headers=basic_auth_header)
+        await client.put('/testdir/file2.txt', data=b'content2', headers=basic_auth_header)
+        
+        # PROPFIND with depth 1
+        response = await client.request(
+            'PROPFIND',
+            '/testdir/',
+            headers={**basic_auth_header, 'Depth': '1'}
+        )
+        
+        assert response.status == 207
+        body = await response.text()
+        assert 'file1.txt' in body
+        assert 'file2.txt' in body
+    
+    @pytest.mark.asyncio
+    async def test_proppatch(self, client, basic_auth_header):
+        """Test PROPPATCH (set properties)"""
+        # Create a file
+        await client.put('/test.txt', data=b'content', headers=basic_auth_header)
+        
+        # Set custom property
+        proppatch_body = b'''<?xml version="1.0"?>
+        <D:propertyupdate xmlns:D="DAV:">
+            <D:set>
+                <D:prop>
+                    <D:displayname>My Document</D:displayname>
+                </D:prop>
+            </D:set>
+        </D:propertyupdate>'''
+        
+        response = await client.request(
+            'PROPPATCH',
+            '/test.txt',
+            data=proppatch_body,
+            headers={**basic_auth_header, 'Content-Type': 'application/xml'}
+        )
+        
+        assert response.status == 207
+    
+    @pytest.mark.asyncio
+    async def test_copy(self, client, basic_auth_header):
+        """Test COPY method"""
+        # Create source file
+        await client.put('/source.txt', data=b'content', headers=basic_auth_header)
+        
+        # Copy to destination
+        response = await client.request(
+            'COPY',
+            '/source.txt',
+            headers={
+                **basic_auth_header,
+                'Destination': '/dest.txt'
+            }
+        )
+        
+        assert response.status in [201, 204]
+        
+        # Verify both files exist
+        source_response = await client.get('/source.txt', headers=basic_auth_header)
+        assert source_response.status == 200
+        
+        dest_response = await client.get('/dest.txt', headers=basic_auth_header)
+        assert dest_response.status == 200
+        
+        # Verify content is the same
+        source_content = await source_response.read()
+        dest_content = await dest_response.read()
+        assert source_content == dest_content
+    
+    @pytest.mark.asyncio
+    async def test_move(self, client, basic_auth_header):
+        """Test MOVE method"""
+        # Create source file
+        await client.put('/source.txt', data=b'content', headers=basic_auth_header)
+        
+        # Move to destination
+        response = await client.request(
+            'MOVE',
+            '/source.txt',
+            headers={
+                **basic_auth_header,
+                'Destination': '/dest.txt'
+            }
+        )
+        
+        assert response.status in [201, 204]
+        
+        # Verify source is gone
+        source_response = await client.get('/source.txt', headers=basic_auth_header)
+        assert source_response.status == 404
+        
+        # Verify destination exists
+        dest_response = await client.get('/dest.txt', headers=basic_auth_header)
+        assert dest_response.status == 200
+    
+    @pytest.mark.asyncio
+    async def test_lock_and_unlock(self, client, basic_auth_header):
+        """Test LOCK and UNLOCK methods"""
+        # Create a file
+        await client.put('/test.txt', data=b'content', headers=basic_auth_header)
+        
+        # Lock the file
+        lock_body = b'''<?xml version="1.0"?>
+        <D:lockinfo xmlns:D="DAV:">
+            <D:lockscope><D:exclusive/></D:lockscope>
+            <D:locktype><D:write/></D:locktype>
+            <D:owner>
+                <D:href>mailto:test@example.com</D:href>
+            </D:owner>
+        </D:lockinfo>'''
+        
+        lock_response = await client.request(
+            'LOCK',
+            '/test.txt',
+            data=lock_body,
+            headers={**basic_auth_header, 'Content-Type': 'application/xml', 'Timeout': 'Second-3600'}
+        )
+        
+        assert lock_response.status == 200
+        assert 'Lock-Token' in lock_response.headers
+        
+        lock_token = lock_response.headers['Lock-Token'].strip('<>')
+        
+        # Unlock the file
+        unlock_response = await client.request(
+            'UNLOCK',
+            '/test.txt',
+            headers={**basic_auth_header, 'Lock-Token': f'<{lock_token}>'}
+        )
+        
+        assert unlock_response.status == 204
+
+
+# ============================================================================
+# Security Tests
+# ============================================================================
+
+class TestSecurity:
+    """Test security features"""
+    
+    @pytest.mark.asyncio
+    async def test_path_traversal_prevention(self, client, basic_auth_header):
+        """Test that path traversal is prevented"""
+        # Try to access parent directory
+        response = await client.get('/../../../etc/passwd', headers=basic_auth_header)
+        assert response.status in [403, 404]
+    
+    @pytest.mark.asyncio
+    async def test_user_isolation(self, client):
+        """Test that users can't access other users' files"""
+        # Create file as testuser
+        testuser_auth = base64.b64encode(b'testuser:testpass123').decode('utf-8')
+        testuser_headers = {'Authorization': f'Basic {testuser_auth}'}
+        
+        await client.put('/myfile.txt', data=b'secret', headers=testuser_headers)
+        
+        # Try to access as admin
+        admin_auth = base64.b64encode(b'admin:adminpass123').decode('utf-8')
+        admin_headers = {'Authorization': f'Basic {admin_auth}'}
+        
+        # This should fail because each user has their own isolated directory
+        # The path /myfile.txt for admin is different from /myfile.txt for testuser
+        response = await client.get('/myfile.txt', headers=admin_headers)
+        assert response.status == 404
+
+
+# ============================================================================
+# Database Tests
+# ============================================================================
+
+class TestDatabase:
+    """Test database operations"""
+    
+    @pytest.mark.asyncio
+    async def test_create_user(self, test_db):
+        """Test user creation"""
+        user_id = await test_db.create_user('newuser', 'password123', 'new@example.com')
+        assert user_id > 0
+        
+        # Verify user can be retrieved
+        user = await test_db.verify_user('newuser', 'password123')
+        assert user is not None
+        assert user['username'] == 'newuser'
+    
+    @pytest.mark.asyncio
+    async def test_verify_user_wrong_password(self, test_db):
+        """Test user verification with wrong password"""
+        user = await test_db.verify_user('testuser', 'wrongpassword')
+        assert user is None
+    
+    @pytest.mark.asyncio
+    async def test_lock_creation(self, test_db):
+        """Test lock creation"""
+        lock_token = await test_db.create_lock(
+            '/test.txt',
+            1,
+            'write',
+            'exclusive',
+            0,
+            3600,
+            'test@example.com'
+        )
+        
+        assert lock_token.startswith('opaquelocktoken:')
+        
+        # Retrieve lock
+        lock = await test_db.get_lock('/test.txt')
+        assert lock is not None
+        assert lock['lock_token'] == lock_token
+    
+    @pytest.mark.asyncio
+    async def test_lock_removal(self, test_db):
+        """Test lock removal"""
+        lock_token = await test_db.create_lock('/test.txt', 1)
+        
+        removed = await test_db.remove_lock(lock_token, 1)
+        assert removed is True
+        
+        # Verify lock is gone
+        lock = await test_db.get_lock('/test.txt')
+        assert lock is None
+    
+    @pytest.mark.asyncio
+    async def test_property_management(self, test_db):
+        """Test property set and get"""
+        await test_db.set_property('/test.txt', 'DAV:', 'displayname', 'My File')
+        
+        props = await test_db.get_properties('/test.txt')
+        assert len(props) > 0
+        assert any(p['property_name'] == 'displayname' for p in props)
+
+
+# ============================================================================
+# Integration Tests
+# ============================================================================
+
+class TestIntegration:
+    """Integration tests for complex workflows"""
+    
+    @pytest.mark.asyncio
+    async def test_complete_workflow(self, client, basic_auth_header):
+        """Test complete file management workflow"""
+        # 1. Create directory
+        await client.request('MKCOL', '/docs/', headers=basic_auth_header)
+        
+        # 2. Upload files
+        await client.put('/docs/file1.txt', data=b'content1', headers=basic_auth_header)
+        await client.put('/docs/file2.txt', data=b'content2', headers=basic_auth_header)
+        
+        # 3. List directory
+        response = await client.request(
+            'PROPFIND',
+            '/docs/',
+            headers={**basic_auth_header, 'Depth': '1'}
+        )
+        assert response.status == 207
+        body = await response.text()
+        assert 'file1.txt' in body
+        assert 'file2.txt' in body
+        
+        # 4. Copy file
+        await client.request(
+            'COPY',
+            '/docs/file1.txt',
+            headers={**basic_auth_header, 'Destination': '/docs/file1_copy.txt'}
+        )
+        
+        # 5. Move file
+        await client.request(
+            'MOVE',
+            '/docs/file2.txt',
+            headers={**basic_auth_header, 'Destination': '/docs/renamed.txt'}
+        )
+        
+        # 6. Verify final state
+        response = await client.request(
+            'PROPFIND',
+            '/docs/',
+            headers={**basic_auth_header, 'Depth': '1'}
+        )
+        body = await response.text()
+        assert 'file1.txt' in body
+        assert 'file1_copy.txt' in body
+        assert 'renamed.txt' in body
+        assert 'file2.txt' not in body
+        
+        # 7. Delete directory
+        await client.delete('/docs/', headers=basic_auth_header)
+        
+        # 8. Verify deletion
+        response = await client.request(
+            'PROPFIND',
+            '/docs/',
+            headers={**basic_auth_header, 'Depth': '0'}
+        )
+        assert response.status == 404
+
+
+# ============================================================================
+# Run Tests
+# ============================================================================
+
+if __name__ == '__main__':
+    pytest.main([__file__, '-v', '--tb=short'])
--- a/webdav.db
+++ b/webdav.db
--- a/webdav.service
+++ b/webdav.service
@ -0,0 +1,85 @@
+# ============================================================================
+# WebDAV Server Systemd Service
+# Installation: sudo cp webdav.service /etc/systemd/system/
+# Enable: sudo systemctl enable webdav
+# Start: sudo systemctl start webdav
+# Status: sudo systemctl status webdav
+# Logs: sudo journalctl -u webdav -f
+# ============================================================================
+
+[Unit]
+Description=WebDAV Server with aiohttp
+Documentation=https://github.com/yourusername/webdav-server
+After=network.target
+
+[Service]
+Type=notify
+
+# User and group to run the service (create with: sudo useradd -r -s /bin/false webdav)
+User=webdav
+Group=webdav
+
+# Working directory
+WorkingDirectory=/opt/webdav-server
+
+# Environment file
+EnvironmentFile=/opt/webdav-server/.env
+
+# Command to start the service (using Gunicorn for production)
+ExecStart=/opt/webdav-server/venv/bin/gunicorn main:init_app \
+    --config /opt/webdav-server/gunicorn_config.py \
+    --bind 0.0.0.0:8080 \
+    --worker-class aiohttp.GunicornWebWorker \
+    --workers 4 \
+    --access-logfile /var/log/webdav/access.log \
+    --error-logfile /var/log/webdav/error.log \
+    --log-level info
+
+# Alternative: Run with Python directly (for development)
+# ExecStart=/opt/webdav-server/venv/bin/python /opt/webdav-server/main.py
+
+# Restart policy
+Restart=always
+RestartSec=10
+
+# Resource limits
+LimitNOFILE=65536
+LimitNPROC=4096
+
+# Security hardening
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/webdav-server/webdav /opt/webdav-server/logs /opt/webdav-server/backups /opt/webdav-server/webdav.db
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectControlGroups=true
+RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
+RestrictNamespaces=true
+RestrictRealtime=true
+RestrictSUIDSGID=true
+LockPersonality=true
+MemoryDenyWriteExecute=true
+SystemCallArchitectures=native
+
+# Process properties
+Nice=0
+IOSchedulingClass=best-effort
+IOSchedulingPriority=4
+
+# Standard output and error
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=webdav-server
+
+# Watchdog (for monitoring)
+WatchdogSec=60s
+
+# Kill mode
+KillMode=mixed
+KillSignal=SIGTERM
+TimeoutStopSec=30s
+
+[Install]
+WantedBy=multi-user.target
--- a/webdav_cli.py
+++ b/webdav_cli.py
@ -0,0 +1,458 @@
+#!/usr/bin/env python3
+"""
+WebDAV Server CLI Management Tool
+Command-line interface for managing users, permissions, and server configuration
+"""
+
+import sys
+import asyncio
+import argparse
+from pathlib import Path
+from getpass import getpass
+from datetime import datetime
+import sqlite3
+
+# Import from main application
+from main import Database, Config
+
+
+class WebDAVCLI:
+    """Command-line interface for WebDAV server management"""
+    
+    def __init__(self):
+        self.db = Database(Config.DB_PATH)
+    
+    # ========================================================================
+    # User Management
+    # ========================================================================
+    
+    async def create_user(self, username: str, password: str = None, 
+                         email: str = None, role: str = 'user'):
+        """Create a new user"""
+        if not password:
+            password = getpass(f"Enter password for {username}: ")
+            password_confirm = getpass("Confirm password: ")
+            
+            if password != password_confirm:
+                print("❌ Passwords do not match!")
+                return False
+        
+        if len(password) < Config.PASSWORD_MIN_LENGTH:
+            print(f"❌ Password must be at least {Config.PASSWORD_MIN_LENGTH} characters!")
+            return False
+        
+        try:
+            user_id = await self.db.create_user(username, password, email, role)
+            print(f"✅ User created successfully!")
+            print(f"   ID: {user_id}")
+            print(f"   Username: {username}")
+            print(f"   Email: {email or 'N/A'}")
+            print(f"   Role: {role}")
+            return True
+        except Exception as e:
+            print(f"❌ Error creating user: {e}")
+            return False
+    
+    async def list_users(self):
+        """List all users"""
+        conn = self.db.get_connection()
+        cursor = conn.cursor()
+        cursor.execute('SELECT id, username, email, role, is_active, created_at, last_login FROM users')
+        users = cursor.fetchall()
+        conn.close()
+        
+        if not users:
+            print("No users found.")
+            return
+        
+        print(f"\n{'ID':<5} {'Username':<20} {'Email':<30} {'Role':<10} {'Active':<8} {'Created':<20}")
+        print("=" * 100)
+        
+        for user in users:
+            active = "✓" if user['is_active'] else "✗"
+            created = user['created_at'][:19] if user['created_at'] else 'N/A'
+            email = user['email'] or 'N/A'
+            
+            print(f"{user['id']:<5} {user['username']:<20} {email:<30} {user['role']:<10} {active:<8} {created:<20}")
+    
+    async def delete_user(self, username: str, force: bool = False):
+        """Delete a user"""
+        if not force:
+            confirm = input(f"Are you sure you want to delete user '{username}'? (yes/no): ")
+            if confirm.lower() != 'yes':
+                print("Deletion cancelled.")
+                return False
+        
+        try:
+            conn = self.db.get_connection()
+            cursor = conn.cursor()
+            cursor.execute('DELETE FROM users WHERE username = ?', (username,))
+            deleted = cursor.rowcount > 0
+            conn.commit()
+            conn.close()
+            
+            if deleted:
+                # Remove user directory
+                user_dir = Path(Config.WEBDAV_ROOT) / 'users' / username
+                if user_dir.exists():
+                    import shutil
+                    shutil.rmtree(user_dir)
+                
+                print(f"✅ User '{username}' deleted successfully!")
+                return True
+            else:
+                print(f"❌ User '{username}' not found!")
+                return False
+        
+        except Exception as e:
+            print(f"❌ Error deleting user: {e}")
+            return False
+    
+    async def change_password(self, username: str, new_password: str = None):
+        """Change user password"""
+        if not new_password:
+            new_password = getpass(f"Enter new password for {username}: ")
+            password_confirm = getpass("Confirm new password: ")
+            
+            if new_password != password_confirm:
+                print("❌ Passwords do not match!")
+                return False
+        
+        if len(new_password) < Config.PASSWORD_MIN_LENGTH:
+            print(f"❌ Password must be at least {Config.PASSWORD_MIN_LENGTH} characters!")
+            return False
+        
+        try:
+            import hashlib
+            import secrets
+            
+            salt = secrets.token_hex(16)
+            password_hash = hashlib.pbkdf2_hmac('sha256', new_password.encode(), salt.encode(), 100000).hex()
+            
+            conn = self.db.get_connection()
+            cursor = conn.cursor()
+            cursor.execute('UPDATE users SET password_hash = ?, salt = ? WHERE username = ?',
+                          (password_hash, salt, username))
+            updated = cursor.rowcount > 0
+            conn.commit()
+            conn.close()
+            
+            if updated:
+                print(f"✅ Password changed successfully for user '{username}'!")
+                return True
+            else:
+                print(f"❌ User '{username}' not found!")
+                return False
+        
+        except Exception as e:
+            print(f"❌ Error changing password: {e}")
+            return False
+    
+    async def activate_user(self, username: str, active: bool = True):
+        """Activate or deactivate a user"""
+        try:
+            conn = self.db.get_connection()
+            cursor = conn.cursor()
+            cursor.execute('UPDATE users SET is_active = ? WHERE username = ?',
+                          (1 if active else 0, username))
+            updated = cursor.rowcount > 0
+            conn.commit()
+            conn.close()
+            
+            if updated:
+                status = "activated" if active else "deactivated"
+                print(f"✅ User '{username}' {status} successfully!")
+                return True
+            else:
+                print(f"❌ User '{username}' not found!")
+                return False
+        
+        except Exception as e:
+            print(f"❌ Error updating user: {e}")
+            return False
+    
+    # ========================================================================
+    # Lock Management
+    # ========================================================================
+    
+    async def list_locks(self):
+        """List all active locks"""
+        conn = self.db.get_connection()
+        cursor = conn.cursor()
+        cursor.execute('''
+            SELECT l.lock_token, l.resource_path, l.lock_type, l.lock_scope,
+                   l.created_at, l.timeout_seconds, u.username
+            FROM locks l
+            LEFT JOIN users u ON l.user_id = u.id
+            WHERE datetime(l.created_at, '+' || l.timeout_seconds || ' seconds') > datetime('now')
+        ''')
+        locks = cursor.fetchall()
+        conn.close()
+        
+        if not locks:
+            print("No active locks found.")
+            return
+        
+        print(f"\n{'Resource':<40} {'Type':<10} {'Scope':<12} {'Owner':<15} {'Created':<20}")
+        print("=" * 100)
+        
+        for lock in locks:
+            created = lock['created_at'][:19] if lock['created_at'] else 'N/A'
+            owner = lock['username'] or 'Unknown'
+            
+            print(f"{lock['resource_path']:<40} {lock['lock_type']:<10} {lock['lock_scope']:<12} {owner:<15} {created:<20}")
+    
+    async def remove_lock(self, resource_path: str):
+        """Remove a lock from a resource"""
+        try:
+            conn = self.db.get_connection()
+            cursor = conn.cursor()
+            cursor.execute('DELETE FROM locks WHERE resource_path = ?', (resource_path,))
+            deleted = cursor.rowcount > 0
+            conn.commit()
+            conn.close()
+            
+            if deleted:
+                print(f"✅ Lock removed from '{resource_path}'!")
+                return True
+            else:
+                print(f"❌ No lock found on '{resource_path}'!")
+                return False
+        
+        except Exception as e:
+            print(f"❌ Error removing lock: {e}")
+            return False
+    
+    # ========================================================================
+    # Statistics and Info
+    # ========================================================================
+    
+    async def show_stats(self):
+        """Show server statistics"""
+        conn = self.db.get_connection()
+        cursor = conn.cursor()
+        
+        # User statistics
+        cursor.execute('SELECT COUNT(*) as total, SUM(is_active) as active FROM users')
+        user_stats = cursor.fetchone()
+        
+        # Lock statistics
+        cursor.execute('''
+            SELECT COUNT(*) as total FROM locks
+            WHERE datetime(created_at, '+' || timeout_seconds || ' seconds') > datetime('now')
+        ''')
+        lock_stats = cursor.fetchone()
+        
+        # Session statistics
+        cursor.execute('''
+            SELECT COUNT(*) as total FROM sessions
+            WHERE datetime(expires_at) > datetime('now')
+        ''')
+        session_stats = cursor.fetchone()
+        
+        # Properties statistics
+        cursor.execute('SELECT COUNT(*) as total FROM properties')
+        prop_stats = cursor.fetchone()
+        
+        conn.close()
+        
+        # Storage statistics
+        webdav_root = Path(Config.WEBDAV_ROOT)
+        if webdav_root.exists():
+            total_size = sum(f.stat().st_size for f in webdav_root.rglob('*') if f.is_file())
+            total_files = sum(1 for f in webdav_root.rglob('*') if f.is_file())
+        else:
+            total_size = 0
+            total_files = 0
+        
+        print("\n" + "=" * 60)
+        print("WebDAV Server Statistics")
+        print("=" * 60)
+        print(f"\n📊 Users:")
+        print(f"   Total: {user_stats['total']}")
+        print(f"   Active: {user_stats['active']}")
+        print(f"   Inactive: {user_stats['total'] - user_stats['active']}")
+        
+        print(f"\n🔒 Locks:")
+        print(f"   Active: {lock_stats['total']}")
+        
+        print(f"\n🔑 Sessions:")
+        print(f"   Active: {session_stats['total']}")
+        
+        print(f"\n📝 Properties:")
+        print(f"   Total: {prop_stats['total']}")
+        
+        print(f"\n💾 Storage:")
+        print(f"   Total files: {total_files:,}")
+        print(f"   Total size: {total_size:,} bytes ({total_size / 1024 / 1024:.2f} MB)")
+        
+        print("\n" + "=" * 60)
+    
+    # ========================================================================
+    # Database Management
+    # ========================================================================
+    
+    async def backup_database(self, output_path: str = None):
+        """Backup the database"""
+        if not output_path:
+            timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
+            output_path = f"./backups/webdav_backup_{timestamp}.db"
+        
+        try:
+            import shutil
+            Path(output_path).parent.mkdir(parents=True, exist_ok=True)
+            shutil.copy2(Config.DB_PATH, output_path)
+            print(f"✅ Database backed up to: {output_path}")
+            return True
+        except Exception as e:
+            print(f"❌ Error backing up database: {e}")
+            return False
+    
+    async def restore_database(self, backup_path: str):
+        """Restore database from backup"""
+        if not Path(backup_path).exists():
+            print(f"❌ Backup file not found: {backup_path}")
+            return False
+        
+        confirm = input("⚠️  This will overwrite the current database. Continue? (yes/no): ")
+        if confirm.lower() != 'yes':
+            print("Restore cancelled.")
+            return False
+        
+        try:
+            import shutil
+            shutil.copy2(backup_path, Config.DB_PATH)
+            print(f"✅ Database restored from: {backup_path}")
+            return True
+        except Exception as e:
+            print(f"❌ Error restoring database: {e}")
+            return False
+
+
+# ============================================================================
+# CLI Command Handlers
+# ============================================================================
+
+async def main():
+    """Main CLI entry point"""
+    parser = argparse.ArgumentParser(
+        description='WebDAV Server Management CLI',
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+Examples:
+  %(prog)s user create john --email john@example.com
+  %(prog)s user list
+  %(prog)s user delete john
+  %(prog)s user password john
+  %(prog)s lock list
+  %(prog)s stats
+  %(prog)s backup
+        """
+    )
+    
+    subparsers = parser.add_subparsers(dest='command', help='Available commands')
+    
+    # User commands
+    user_parser = subparsers.add_parser('user', help='User management')
+    user_subparsers = user_parser.add_subparsers(dest='user_command')
+    
+    # Create user
+    create_parser = user_subparsers.add_parser('create', help='Create a new user')
+    create_parser.add_argument('username', help='Username')
+    create_parser.add_argument('--password', help='Password (will prompt if not provided)')
+    create_parser.add_argument('--email', help='Email address')
+    create_parser.add_argument('--role', default='user', choices=['user', 'admin'], help='User role')
+    
+    # List users
+    user_subparsers.add_parser('list', help='List all users')
+    
+    # Delete user
+    delete_parser = user_subparsers.add_parser('delete', help='Delete a user')
+    delete_parser.add_argument('username', help='Username to delete')
+    delete_parser.add_argument('--force', action='store_true', help='Skip confirmation')
+    
+    # Change password
+    password_parser = user_subparsers.add_parser('password', help='Change user password')
+    password_parser.add_argument('username', help='Username')
+    password_parser.add_argument('--new-password', help='New password (will prompt if not provided)')
+    
+    # Activate/deactivate user
+    activate_parser = user_subparsers.add_parser('activate', help='Activate a user')
+    activate_parser.add_argument('username', help='Username')
+    
+    deactivate_parser = user_subparsers.add_parser('deactivate', help='Deactivate a user')
+    deactivate_parser.add_argument('username', help='Username')
+    
+    # Lock commands
+    lock_parser = subparsers.add_parser('lock', help='Lock management')
+    lock_subparsers = lock_parser.add_subparsers(dest='lock_command')
+    
+    lock_subparsers.add_parser('list', help='List all active locks')
+    
+    remove_parser = lock_subparsers.add_parser('remove', help='Remove a lock')
+    remove_parser.add_argument('resource', help='Resource path')
+    
+    # Statistics
+    subparsers.add_parser('stats', help='Show server statistics')
+    
+    # Backup
+    backup_parser = subparsers.add_parser('backup', help='Backup database')
+    backup_parser.add_argument('--output', help='Output path for backup')
+    
+    # Restore
+    restore_parser = subparsers.add_parser('restore', help='Restore database from backup')
+    restore_parser.add_argument('backup', help='Path to backup file')
+    
+    args = parser.parse_args()
+    
+    if not args.command:
+        parser.print_help()
+        return
+    
+    cli = WebDAVCLI()
+    
+    # Execute command
+    try:
+        if args.command == 'user':
+            if args.user_command == 'create':
+                await cli.create_user(args.username, args.password, args.email, args.role)
+            elif args.user_command == 'list':
+                await cli.list_users()
+            elif args.user_command == 'delete':
+                await cli.delete_user(args.username, args.force)
+            elif args.user_command == 'password':
+                await cli.change_password(args.username, getattr(args, 'new_password', None))
+            elif args.user_command == 'activate':
+                await cli.activate_user(args.username, True)
+            elif args.user_command == 'deactivate':
+                await cli.activate_user(args.username, False)
+            else:
+                user_parser.print_help()
+        
+        elif args.command == 'lock':
+            if args.lock_command == 'list':
+                await cli.list_locks()
+            elif args.lock_command == 'remove':
+                await cli.remove_lock(args.resource)
+            else:
+                lock_parser.print_help()
+        
+        elif args.command == 'stats':
+            await cli.show_stats()
+        
+        elif args.command == 'backup':
+            await cli.backup_database(args.output)
+        
+        elif args.command == 'restore':
+            await cli.restore_database(args.backup)
+    
+    except KeyboardInterrupt:
+        print("\n\nOperation cancelled.")
+        sys.exit(1)
+    except Exception as e:
+        print(f"\n❌ Error: {e}")
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    asyncio.run(main())