67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
import logging
|
|
from pprint import pformat
|
|
|
|
from django.conf import settings
|
|
from django.http import HttpResponse
|
|
|
|
from .crypto import HMAC
|
|
from .exceptions import TIF
|
|
from .utils import Encoder
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class SQRLHttpResponse(HttpResponse):
|
|
"""
|
|
Custom ``HTTPResponse`` class used to return SQRL-formatted response.
|
|
|
|
The response is automatically signed, normalized and encoded
|
|
as per SQRL specification.
|
|
|
|
This view also adds a couple of DEBUG logs for easier SQRL debugging
|
|
and also returns all SQRL data back as ``X-SQRL-*`` headers.
|
|
|
|
Parameters
|
|
----------
|
|
nut : SQRLNut
|
|
Nut which will be used to sign the response data.
|
|
data : OrderedDict
|
|
Data to be returned back to the user.
|
|
"""
|
|
|
|
def __init__(self, nut, data, *args, **kwargs):
|
|
normalized_data = Encoder.normalize(self.sign_response(nut, data))
|
|
content = Encoder.base64_dumps(normalized_data)
|
|
|
|
kwargs.setdefault('content_type', 'application/sqrl')
|
|
|
|
super(SQRLHttpResponse, self).__init__(content, *args, **kwargs)
|
|
|
|
self['Content-Length'] = len(self.content)
|
|
|
|
if settings.DEBUG:
|
|
for k, v in normalized_data.items():
|
|
self['X-SQRL-{}'.format(k)] = v
|
|
|
|
log.error('Response encoded data:\n{}'
|
|
''.format(content))
|
|
log.error('Response data:\n{}'
|
|
''.format(pformat(normalized_data)))
|
|
log.error('Response TIF breakdown:\n{}'
|
|
''.format(pformat(TIF(int(data['tif'], 16)).breakdown())))
|
|
|
|
def sign_response(self, nut, data):
|
|
"""
|
|
When nut is present, this method signs the data by adding ``mac`` key.
|
|
|
|
For signing :meth:`.crypto.HMAC.sign_data` is used.
|
|
"""
|
|
if not nut:
|
|
return data
|
|
|
|
data['mac'] = HMAC(nut, data).sign_data()
|
|
|
|
return data
|