forked from 00dani/lemoncurry
137 lines
4.5 KiB
Python
137 lines
4.5 KiB
Python
import mf2py
|
|
|
|
from annoying.decorators import render_to
|
|
from django.contrib.auth.decorators import login_required
|
|
from django.http import HttpResponseForbidden, HttpResponseBadRequest
|
|
from django.http import JsonResponse
|
|
from django.shortcuts import redirect
|
|
from django.utils.decorators import method_decorator
|
|
from django.views.generic import TemplateView
|
|
from django.views.decorators.csrf import csrf_exempt
|
|
from django.views.decorators.http import require_POST
|
|
from lemoncurry import breadcrumbs, utils
|
|
from urllib.parse import urlencode, urljoin, urlunparse, urlparse
|
|
|
|
from ..models import IndieAuthCode
|
|
|
|
breadcrumbs.add('lemonauth:indie', label='indieauth', parent='home:index')
|
|
|
|
|
|
def bad_req(message):
|
|
return HttpResponseBadRequest(message, content_type='text/plain')
|
|
|
|
|
|
def forbid(message):
|
|
return HttpResponseForbidden(message, content_type='text/plain')
|
|
|
|
|
|
def canonical(url):
|
|
(scheme, loc, path, params, q, fragment) = urlparse(url)
|
|
if not path:
|
|
path = '/'
|
|
if not loc:
|
|
loc, path = path, ''
|
|
if not scheme:
|
|
scheme = 'https'
|
|
return urlunparse((scheme, loc, path, params, q, fragment))
|
|
|
|
|
|
@method_decorator(csrf_exempt, name='dispatch')
|
|
class IndieView(TemplateView):
|
|
template_name = 'lemonauth/indie.html'
|
|
required_params = ('me', 'client_id', 'redirect_uri')
|
|
|
|
@method_decorator(login_required)
|
|
@method_decorator(render_to(template_name))
|
|
def get(self, request):
|
|
params = request.GET.dict()
|
|
params.setdefault('response_type', 'id')
|
|
|
|
for param in self.required_params:
|
|
if param not in params:
|
|
return HttpResponseBadRequest(
|
|
'parameter {0} is required'.format(param),
|
|
content_type='text/plain',
|
|
)
|
|
|
|
me = canonical(params['me'])
|
|
user = urljoin(utils.origin(request), request.user.url)
|
|
if user != me:
|
|
return HttpResponseForbidden(
|
|
'you are logged in but not as {0}'.format(me),
|
|
content_type='text/plain',
|
|
)
|
|
|
|
type = params['response_type']
|
|
if type not in ('id', 'code'):
|
|
return HttpResponseBadRequest(
|
|
'unknown response_type: {0}'.format(type),
|
|
content_type='text/plain'
|
|
)
|
|
|
|
scopes = ()
|
|
if type == 'code':
|
|
if 'scope' not in params:
|
|
return HttpResponseBadRequest(
|
|
'scopes required for code type',
|
|
content_type='text/plain',
|
|
)
|
|
scopes = params['scope'].split(' ')
|
|
|
|
client = mf2py.Parser(url=params['client_id'], html_parser='html5lib')
|
|
rels = (client.to_dict()['rel-urls']
|
|
.get(params['redirect_uri'], {})
|
|
.get('rels', ()))
|
|
verified = 'redirect_uri' in rels
|
|
|
|
try:
|
|
app = client.to_dict(filter_by_type='h-x-app')[0]['properties']
|
|
except IndexError:
|
|
app = None
|
|
|
|
return {
|
|
'app': app,
|
|
'me': me,
|
|
'verified': verified,
|
|
'params': params,
|
|
'scopes': scopes,
|
|
'title': 'indieauth',
|
|
}
|
|
|
|
def post(self, request):
|
|
post = request.POST.dict()
|
|
try:
|
|
code = IndieAuthCode.objects.get(code=post.get('code'))
|
|
except IndieAuthCode.DoesNotExist:
|
|
return forbid('invalid auth code')
|
|
|
|
# We always delete the code immediately to ensure it's only single-use.
|
|
# If you pass the right code but the wrong other info, bad luck, you
|
|
# need a new code.
|
|
code.delete()
|
|
|
|
# After deleting the code from the DB, we verify the other parameters
|
|
# of the request.
|
|
if code.response_type != 'id':
|
|
return bad_req('this endpoint only supports response_type=id')
|
|
if post.get('client_id') != code.client_id:
|
|
return forbid('client id did not match')
|
|
if post.get('redirect_uri') != code.redirect_uri:
|
|
return forbid('redirect uri did not match')
|
|
|
|
# If we got here, it's valid! Yay!
|
|
return utils.choose_type(request, {'me': code.me}, {
|
|
'application/json': JsonResponse,
|
|
'application/x-www-form-urlencoded': utils.form_encoded_response,
|
|
})
|
|
|
|
|
|
@login_required
|
|
@require_POST
|
|
def approve(request):
|
|
code = IndieAuthCode.objects.create_from_qdict(request.POST)
|
|
code.save()
|
|
params = {'code': code.code, 'me': code.me}
|
|
if 'state' in request.POST:
|
|
params['state'] = request.POST['state']
|
|
return redirect(code.redirect_uri + '?' + urlencode(params))
|