Registration api (read)

[peppelinux]

During the coverage of django-oidc-op, with pure integration tests, I got this exception when I try to test registration_read endpoint.

[(INFO)] [2021-06-10 08:35:11,908] Request at the "registration" endpoint [oidc_provider.views.service_endpoint:169]
[(DEBUG)] [2021-06-10 08:35:11,939] new_func request GET: <QueryDict: {'client_id': ['VWDTEQ5A5Lrm-L2gZSXgAw']}> - - Authorization Header: _q__lkUQbiv8hSHh5adxK_sL6B1CD4PVpTRrrOxF5O4 [oidc_provider.decorators.debug_request:21]
[(INFO)] [2021-06-10 08:35:11,947] Request at the "registration_read" endpoint [oidc_provider.views.service_endpoint:169]
[(ERROR)] [2021-06-10 08:35:11,949] Internal Server Error: /oidcop/registration_read [django.request.log_response:224]
Traceback (most recent call last):
  File "~/DEV/IdentityPython/OIDC/env/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "~/DEV/IdentityPython/OIDC/env/lib/python3.8/site-packages/django/core/handlers/base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "~/DEV/IdentityPython/OIDC/env/lib/python3.8/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "~/DEV/IdentityPython/OIDC/django-oidc-op/oidc_provider/tests/example/oidc_provider/decorators.py", line 54, in new_func
    return func_to_decorate(*original_args, **original_kwargs)
  File "~/DEV/IdentityPython/OIDC/django-oidc-op/oidc_provider/tests/example/oidc_provider/decorators.py", line 67, in new_func
    return func_to_decorate(*original_args, **original_kwargs)
  File "~/DEV/IdentityPython/OIDC/django-oidc-op/oidc_provider/tests/example/oidc_provider/views.py", line 243, in registration_read
    return service_endpoint(
  File "~/DEV/IdentityPython/OIDC/django-oidc-op/oidc_provider/tests/example/oidc_provider/views.py", line 173, in service_endpoint
    req_args = endpoint.parse_request(data, http_info=http_info)
  File "~/DEV/IdentityPython/OIDC/env/lib/python3.8/site-packages/oidcop/endpoint.py", line 178, in parse_request
    auth_info = self.client_authentication(req, http_info, endpoint=self, **kwargs)
  File "~/DEV/IdentityPython/OIDC/env/lib/python3.8/site-packages/oidcop/endpoint.py", line 231, in client_authentication
    raise UnAuthorizedClient("Authorization failed")
oidcop.exception.UnAuthorizedClient: Authorization failed

This is the test I'm using
https://github.com/peppelinux/django-oidc-op/blob/91e2c53219472b33de110165e447fad4c2268fe0/oidc_provider/tests/test_03_rp_flow.py#L79

It seems to me that the client registration_access_token have not been recognized as valid by client_authn.verify_client().
Digging in the oidc-op unit tests I found this:

oidc-op/tests/test_32_oidc_read_registration.py

Line 136 in 0f92cfb

_resp["response_args"]["registration_access_token"]

This test meks me aware of what parameters (and authz bearer token) to use, despite this the integration test fails, am I wrong or do we have a bug?

[peppelinux]

My fault, I found thanks to #96