a Django-based indieweb.org site https://00dani.me/
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from jose import jwt
from datetime import datetime, timedelta
from django.contrib.auth import get_user_model
from django.conf import settings
from django.http import HttpResponse
def auth(request):
if 'HTTP_AUTHORIZATION' in request.META:
auth = request.META.get('HTTP_AUTHORIZATION').split(' ')
if auth[0] != 'Bearer':
return HttpResponse(
'authorisation with {0} not supported'.format(auth[0]),
content_type='text/plain',
status=400
)
if len(auth) != 2:
return HttpResponse(
'invalid Bearer auth format, must be Bearer <token>',
content_type='text/plain',
status=400
)
token = auth[1]
elif 'access_token' in request.POST:
token = request.POST.get('access_token')
elif 'access_token' in request.GET:
token = request.GET.get('access_token')
else:
return HttpResponse(
'authorisation required',
content_type='text/plain',
status=401
)
try:
token = decode(token)
except Exception as e:
return HttpResponse(
'invalid micropub token',
content_type='text/plain',
status=403,
)
return MicropubToken(token)
class MicropubToken:
def __init__(self, tok):
self.user = get_user_model().objects.get(pk=tok['uid'])
self.client = tok['cid']
self.scope = tok['sco']
self.me = self.user.full_url
self.scopes = self.scope.split(' ')
def __contains__(self, scope):
return scope in self.scopes
def encode(payload):
return jwt.encode(payload, settings.SECRET_KEY, algorithm='HS256')
def decode(token):
return jwt.decode(token, settings.SECRET_KEY, algorithms=('HS256',))
def gen_auth_code(req):
code = {
'uid': req.user.id,
'cid': req.POST['client_id'],
'uri': req.POST['redirect_uri'],
'typ': req.POST.get('response_type', 'id'),
'iat': datetime.utcnow(),
'exp': datetime.utcnow() + timedelta(seconds=30),
}
if 'scope' in req.POST:
code['sco'] = ' '.join(req.POST.getlist('scope'))
return encode(code)
def gen_token(code):
tok = {
'uid': code['uid'],
'cid': code['cid'],
'sco': code['sco'],
'iat': datetime.utcnow(),
}
return encode(tok)