JSONDecodeError at /oidc/callback/

[strus38]

Using OIDC keycloak with RS256 and OIDC_OP_JWKS_ENDPOINT: https://keycloak.home.lab/auth/realms/master/protocol/openid-connect/certs

It seems to pass the token verification step, but fails after:

Environment:

Request Method: GET
Request URL: http://netbox.home.lab/oidc/callback/?state=N3ih2JMAfaM46vvyVIBZ59k9MsXHdy5B&session_state=7088a530-0120-46e6-83f7-2988c62af8b8&code=216e6a06-51fe-41e9-90ce-a5eccb8b4c32.7088a530-0120-46e6-83f7-2988c62af8b8.0484b399-6e9d-48a0-8e5c-d305ea20485a

Django Version: 3.1
Python Version: 3.7.9
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'mozilla_django_oidc',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'cacheops',
 'corsheaders',
 'debug_toolbar',
 'django_filters',
 'django_tables2',
 'django_prometheus',
 'mptt',
 'rest_framework',
 'taggit',
 'timezone_field',
 'circuits',
 'dcim',
 'ipam',
 'extras',
 'secrets',
 'tenancy',
 'users',
 'utilities',
 'virtualization',
 'django_rq',
 'drf_yasg']
Installed Middleware:
['debug_toolbar.middleware.DebugToolbarMiddleware',
 'django_prometheus.middleware.PrometheusBeforeMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'utilities.middleware.ExceptionHandlingMiddleware',
 'utilities.middleware.RemoteUserMiddleware',
 'utilities.middleware.LoginRequiredMiddleware',
 'utilities.middleware.APIVersionMiddleware',
 'extras.middleware.ObjectChangeMiddleware',
 'django_prometheus.middleware.PrometheusAfterMiddleware']



Traceback (most recent call last):
  File "/usr/local/lib/python3.7/json/decoder.py", line 353, in raw_decode
    obj, end = self.scan_once(s, idx)

During handling of the above exception (0), another exception occurred:
  File "/usr/local/lib/python3.7/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/views/generic/base.py", line 73, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/views/generic/base.py", line 101, in dispatch
    return handler(request, *args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/mozilla_django_oidc/views.py", line 99, in get
    self.user = auth.authenticate(**kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/contrib/auth/__init__.py", line 73, in authenticate
    user = backend.authenticate(request, **credentials)
  File "/usr/local/lib/python3.7/site-packages/mozilla_django_oidc/auth.py", line 286, in authenticate
    return self.get_or_create_user(access_token, id_token, payload)
  File "/usr/local/lib/python3.7/site-packages/mozilla_django_oidc/auth.py", line 307, in get_or_create_user
    user_info = self.get_userinfo(access_token, id_token, payload)
  File "/usr/local/lib/python3.7/site-packages/mozilla_django_oidc/auth.py", line 245, in get_userinfo
    return user_response.json()
  File "/usr/local/lib/python3.7/site-packages/requests/models.py", line 890, in json
    self.content.decode(encoding), **kwargs
  File "/usr/local/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/usr/local/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/local/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None

Exception Type: JSONDecodeError at /oidc/callback/
Exception Value: Expecting value: line 1 column 1 (char 0)

[akatsoulas]

Thanks @strus38 for filing this. Closing as duplicate of #376. Let's track the issue there