mirror of
https://github.com/encode/django-rest-framework.git
synced 2025-10-30 23:47:53 +03:00
102 lines
3.5 KiB
Python
102 lines
3.5 KiB
Python
"""
|
|
The :mod:`authentication` module provides a set of pluggable authentication classes.
|
|
|
|
Authentication behavior is provided by mixing the :class:`mixins.AuthMixin` class into a :class:`View` class.
|
|
|
|
The set of authentication methods which are used is then specified by setting the
|
|
:attr:`authentication` attribute on the :class:`View` class, and listing a set of :class:`authentication` classes.
|
|
"""
|
|
|
|
from django.contrib.auth import authenticate
|
|
from djangorestframework.compat import CsrfViewMiddleware
|
|
import base64
|
|
|
|
__all__ = (
|
|
'BaseAuthentication',
|
|
'BasicAuthentication',
|
|
'UserLoggedInAuthentication'
|
|
)
|
|
|
|
|
|
class BaseAuthentication(object):
|
|
"""
|
|
All authentication classes should extend BaseAuthentication.
|
|
"""
|
|
|
|
def __init__(self, view):
|
|
"""
|
|
:class:`Authentication` classes are always passed the current view on creation.
|
|
"""
|
|
self.view = view
|
|
|
|
def authenticate(self, request):
|
|
"""
|
|
Authenticate the :obj:`request` and return a :obj:`User` or :const:`None`. [*]_
|
|
|
|
.. [*] The authentication context *will* typically be a :obj:`User`,
|
|
but it need not be. It can be any user-like object so long as the
|
|
permissions classes (see the :mod:`permissions` module) on the view can
|
|
handle the object and use it to determine if the request has the required
|
|
permissions or not.
|
|
|
|
This can be an important distinction if you're implementing some token
|
|
based authentication mechanism, where the authentication context
|
|
may be more involved than simply mapping to a :obj:`User`.
|
|
"""
|
|
return None
|
|
|
|
|
|
class BasicAuthentication(BaseAuthentication):
|
|
"""
|
|
Use HTTP Basic authentication.
|
|
"""
|
|
|
|
def authenticate(self, request):
|
|
"""
|
|
Returns a :obj:`User` if a correct username and password have been supplied
|
|
using HTTP Basic authentication. Otherwise returns :const:`None`.
|
|
"""
|
|
from django.utils.encoding import smart_unicode, DjangoUnicodeDecodeError
|
|
|
|
if 'HTTP_AUTHORIZATION' in request.META:
|
|
auth = request.META['HTTP_AUTHORIZATION'].split()
|
|
if len(auth) == 2 and auth[0].lower() == "basic":
|
|
try:
|
|
auth_parts = base64.b64decode(auth[1]).partition(':')
|
|
except TypeError:
|
|
return None
|
|
|
|
try:
|
|
uname, passwd = smart_unicode(auth_parts[0]), smart_unicode(auth_parts[2])
|
|
except DjangoUnicodeDecodeError:
|
|
return None
|
|
|
|
user = authenticate(username=uname, password=passwd)
|
|
if user is not None and user.is_active:
|
|
return user
|
|
return None
|
|
|
|
|
|
class UserLoggedInAuthentication(BaseAuthentication):
|
|
"""
|
|
Use Django's session framework for authentication.
|
|
"""
|
|
|
|
def authenticate(self, request):
|
|
"""
|
|
Returns a :obj:`User` if the request session currently has a logged in user.
|
|
Otherwise returns :const:`None`.
|
|
"""
|
|
self.view.DATA # Make sure our generic parsing runs first
|
|
|
|
if getattr(request, 'user', None) and request.user.is_active:
|
|
# Enforce CSRF validation for session based authentication.
|
|
resp = CsrfViewMiddleware().process_view(request, None, (), {})
|
|
|
|
if resp is None: # csrf passed
|
|
return request.user
|
|
return None
|
|
|
|
|
|
# TODO: TokenAuthentication, DigestAuthentication, OAuthAuthentication
|