OIDC + Python3 + Incorrect padding during base64decode

[nabadger]

Using 3.6.5

  File "/usr/lib/python3.6/site-packages/kubernetes-6.0.0_snapshot-py3.6.egg/kubernetes/config/kube_config.py", line 474, in load_kube_config
  File "/usr/lib/python3.6/site-packages/kubernetes-6.0.0_snapshot-py3.6.egg/kubernetes/config/kube_config.py", line 355, in load_and_set
  File "/usr/lib/python3.6/site-packages/kubernetes-6.0.0_snapshot-py3.6.egg/kubernetes/config/kube_config.py", line 185, in _load_authentication
  File "/usr/lib/python3.6/site-packages/kubernetes-6.0.0_snapshot-py3.6.egg/kubernetes/config/kube_config.py", line 237, in _load_oid_token
  File "/usr/lib/python3.6/base64.py", line 87, in b64decode
    return binascii.a2b_base64(s)
binascii.Error: Incorrect padding

When attempting to decode the token, I run into this issue in _load_oid_token

  if PY3:
    jwt_attributes = json.loads(
      base64.b64decode(parts[1]).decode('utf-8')
    )

The non py3 block appends "==" to the token part before decoding it. If i use that, it works fine.

[bcatubig]

Ran into this issue today as well on 3.6.4

[richerve]

Same on 3.5.5 and 3.6.6.

This is the reference to the PR to fix this: kubernetes-client/python-base#70

[markuszoeller]

Same on Python 3.4

[zybjcdl]

@bpicolo Could you please help to fix the issue? We need to run python 3.6.5 with this client.

[cparedes]

Ran into the same issue with Python 3.7 with the latest version of this client (8.0.0 at this time of writing)

[AlexShemeshWix]

Same on 3.7.2 and 3.6.0

[rocktavious]

Same on python 3.7.2 + kubernetes 9.0.0

[joshbranham]

Anyone know why no fix for this has been merged?

[nabadger]

@yliaog - would you (or any owner) be able to provide a comment on this? Just wondering what your thoughts are on this issue as it's been around for a while and probably affecting quite a large user base.

[yliaog]

it looks @micw523 is reviewing the fix PR kubernetes-client/python-base#70, @micw523 do you have any further comment on the PR? we'd like to get it merged soon. Thanks.

[yliaog]

/cc

[micw523]

Hi @yliaog, kubernetes-client/python-base#70 seems to have been abandoned and the fork does not exist any more. kubernetes-client/python-base#79 is active and seems like the author just pushed some new commits.

However, due to the new version of minikube, we need to have #797 merged first to unblock the PRs. We can’t have the CI to pass unless we get that one through.