# wsgi-auth-middleware
`wsgi-auth-middleware` provides WSGI middleware to perform HTTP authentication (RFC7235) using a variety of schemes.
[![PyPI - Version](https://img.shields.io/pypi/v/wsgi-auth-middleware.svg)](https://pypi.org/project/wsgi-auth-middleware)
[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/wsgi-auth-middleware.svg)](https://pypi.org/project/wsgi-auth-middleware)
-----
## Table of Contents
- [Installation](#installation)
- [Usage](#usage)
- [Supported Specifications](#supported-specifications)
- [License](#license)
## Installation
Each backend requires additional dependencies that must be explicitly chosen using the [PEP508 Extras](https://peps.python.org/pep-0508/#extras) that cover it. The following command will install `wsgi-auth-middleware` with all supported backends.
```console
pip install wsgi-auth-middleware[gssapi,pam]
```
## Usage
This middleware package provides the `HttpAuthWsgiMiddleware` class and various callables that implement authentication primitives. The result of wrapping a WSGI app with `HttpAuthWsgiMiddleware` will be a new WSGI app that performs HTTP authentication and, upon success, places the authenticated username string in `environ["REMOTE_USER"]`.
`wsgi-auth-middleware` is designed to be flexible. You can mix and match HTTP authentication schemes (frontends) with any system authentication backends that support their interfaces. Typical usage looks like this:
```python
from wsgi_auth_middleware import HttpAuthWsgiMiddleware
from wsgi_auth_middleware.frontends import BasicFrontend, NegotiateFrontend
from wsgi_auth_middleware.backends import PamBackend, GssapiBackend
pam_backend = PamBackend(service='my_pam_service')
basic_frontend = BasicFrontend(auth_backends=[pam_backend], realm='my realm')
gssapi_backend = GssapiBackend(fqdn='example.org')
negotiate_frontend = NegotiateFrontend(auth_backends=[gssapi_backend])
# Authentication will be tried in the sequential order given by `auth_frontends`.
authenticated_app = HttpAuthWsgiMiddleware(
app=my_wsgi_app,
auth_frontends=[negotiate_frontend, basic_frontend]
)
```
## Supported Specifications
### Currently supported HTTP authentication schemes
* [RFC7235 - Hypertext Transfer Protocol (HTTP/1.1): Authentication](https://datatracker.ietf.org/doc/html/rfc7235)
* [RFC7617 - The 'Basic' HTTP Authentication Scheme](https://datatracker.ietf.org/doc/html/rfc7617)
* [(Kerberos only) RFC4559 - SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft Windows](https://datatracker.ietf.org/doc/html/rfc4559)
### WSGI specifications
* [PEP 3333 – Python Web Server Gateway Interface v1.0.1](https://peps.python.org/pep-3333/)
* [A very basic description of authentication opportunities in WSGI](https://wsgi.readthedocs.io/en/latest/specifications/simple_authentication.html)
## License
`wsgi-auth-middleware` is distributed under the terms of the [ISC](https://spdx.org/licenses/ISC.html) license.
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"description": "# wsgi-auth-middleware\n\n`wsgi-auth-middleware` provides WSGI middleware to perform HTTP authentication (RFC7235) using a variety of schemes.\n\n[![PyPI - Version](https://img.shields.io/pypi/v/wsgi-auth-middleware.svg)](https://pypi.org/project/wsgi-auth-middleware)\n[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/wsgi-auth-middleware.svg)](https://pypi.org/project/wsgi-auth-middleware)\n\n-----\n\n## Table of Contents\n\n- [Installation](#installation)\n- [Usage](#usage)\n- [Supported Specifications](#supported-specifications)\n- [License](#license)\n\n## Installation\n\nEach backend requires additional dependencies that must be explicitly chosen using the [PEP508 Extras](https://peps.python.org/pep-0508/#extras) that cover it. The following command will install `wsgi-auth-middleware` with all supported backends.\n\n```console\npip install wsgi-auth-middleware[gssapi,pam]\n```\n\n## Usage\n\nThis middleware package provides the `HttpAuthWsgiMiddleware` class and various callables that implement authentication primitives. The result of wrapping a WSGI app with `HttpAuthWsgiMiddleware` will be a new WSGI app that performs HTTP authentication and, upon success, places the authenticated username string in `environ[\"REMOTE_USER\"]`.\n\n`wsgi-auth-middleware` is designed to be flexible. You can mix and match HTTP authentication schemes (frontends) with any system authentication backends that support their interfaces. Typical usage looks like this:\n\n```python\nfrom wsgi_auth_middleware import HttpAuthWsgiMiddleware\nfrom wsgi_auth_middleware.frontends import BasicFrontend, NegotiateFrontend\nfrom wsgi_auth_middleware.backends import PamBackend, GssapiBackend\n\npam_backend = PamBackend(service='my_pam_service')\nbasic_frontend = BasicFrontend(auth_backends=[pam_backend], realm='my realm')\n\ngssapi_backend = GssapiBackend(fqdn='example.org')\nnegotiate_frontend = NegotiateFrontend(auth_backends=[gssapi_backend])\n\n# Authentication will be tried in the sequential order given by `auth_frontends`.\nauthenticated_app = HttpAuthWsgiMiddleware(\n app=my_wsgi_app,\n auth_frontends=[negotiate_frontend, basic_frontend]\n)\n```\n\n## Supported Specifications\n\n### Currently supported HTTP authentication schemes\n\n* [RFC7235 - Hypertext Transfer Protocol (HTTP/1.1): Authentication](https://datatracker.ietf.org/doc/html/rfc7235)\n* [RFC7617 - The 'Basic' HTTP Authentication Scheme](https://datatracker.ietf.org/doc/html/rfc7617)\n* [(Kerberos only) RFC4559 - SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft Windows](https://datatracker.ietf.org/doc/html/rfc4559)\n\n### WSGI specifications\n\n* [PEP 3333 \u2013 Python Web Server Gateway Interface v1.0.1](https://peps.python.org/pep-3333/)\n* [A very basic description of authentication opportunities in WSGI](https://wsgi.readthedocs.io/en/latest/specifications/simple_authentication.html)\n\n## License\n\n`wsgi-auth-middleware` is distributed under the terms of the [ISC](https://spdx.org/licenses/ISC.html) license.\n",
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