feat(auth): add pluggable authentication system for Flask routes
Implement comprehensive authentication system with support for
Basic Auth, Flask-Login, and OAuth2 providers.
Features:
- Pluggable architecture via factory pattern
- Multiple authentication providers:
* None: No authentication (development/testing)
* Basic Auth: HTTP Basic with bcrypt support
* Flask-Login: Session-based with multiple users
* OAuth2: Google, GitHub, GitLab, and generic providers
- Decorator-based route protection (@auth.require_auth)
- User authorization by domain or email (OAuth)
- bcrypt password hashing support
- Comprehensive documentation and examples
Components:
- libtisbackup/auth/__init__.py: Factory function and exports
- libtisbackup/auth/base.py: Base provider interface
- libtisbackup/auth/basic_auth.py: HTTP Basic Auth implementation
- libtisbackup/auth/flask_login_auth.py: Flask-Login implementation
- libtisbackup/auth/oauth_auth.py: OAuth2 implementation
- libtisbackup/auth/example_integration.py: Integration examples
- libtisbackup/auth/README.md: API reference and examples
Documentation:
- AUTHENTICATION.md: Complete authentication guide
* Setup instructions for each provider
* Configuration examples
* Security best practices
* Troubleshooting guide
* Migration guide
- samples/auth-config-examples.ini: Configuration templates
Dependencies:
- Add optional dependencies in pyproject.toml:
* auth-basic: bcrypt>=4.0.0
* auth-login: flask-login>=0.6.0, bcrypt>=4.0.0
* auth-oauth: authlib>=1.3.0, requests>=2.32.0
* auth-all: All auth providers
Installation:
```bash
# Install specific provider
uv sync --extra auth-basic
# Install all providers
uv sync --extra auth-all
```
Usage:
```python
from libtisbackup.auth import get_auth_provider
# Initialize
auth = get_auth_provider("basic", {
"username": "admin",
"password": "$2b$12$...",
"use_bcrypt": True
})
auth.init_app(app)
# Protect routes
@app.route("/")
@auth.require_auth
def index():
user = auth.get_current_user()
return f"Hello {user['username']}"
```
Security features:
- bcrypt password hashing (work factor 12)
- OAuth domain/user restrictions
- Session-based authentication
- Clear separation of concerns
- Environment variable support for secrets
OAuth providers supported:
- Google (OpenID Connect)
- GitHub
- GitLab
- Generic OAuth2 provider
Breaking change: None - new feature, backward compatible
Users can continue without authentication (type=none)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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