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auth.py
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auth.py
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# Copyright (C) 2017 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information
from rest_framework import status
from .errors import UNAUTHORIZED, make_error_response
def convert_response(request, content):
"""Convert response from drf's basic authentication mechanism to a
swh-deposit one.
Args:
request (Request): Use to build the response
content (bytes): The drf's answer
Returns:
Response with the same status error as before, only the
body is now an swh-deposit compliant one.
"""
from json import loads
content = loads(content.decode('utf-8'))
detail = content.get('detail')
if detail:
verbose_description = 'API is protected by basic authentication'
else:
detail = 'API is protected by basic authentication'
verbose_description = None
response = make_error_response(
request,
UNAUTHORIZED,
summary=detail,
verbose_description=verbose_description)
response['WWW-Authenticate'] = 'Basic realm=""'
return response
class WrapBasicAuthenticationResponseMiddleware:
"""Middleware to capture potential authentication error and convert
them to standard deposit response.
This is to be installed in django's settings.py module.
"""
def __init__(self, get_response):
super().__init__()
self.get_response = get_response
def __call__(self, request):
response = self.get_response(request)
if response.status_code is status.HTTP_401_UNAUTHORIZED:
content_type = response._headers.get('content-type')
if content_type == ('Content-Type', 'application/json'):
return convert_response(request, response.content)
return response

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