Members of nested groups aren't allowed if only the parent group is listed under `allowed_groups`

[Aethylred]

Bug description

Using a directory service like FreeIPA that allows nested groups, if a nested group is added to c.LDAPAuthenticator.allowed_groups the indirect members (i.e. members of child groups) are not granted access to Jupyter services.

Expected behaviour

We expected indirect group members to be allowed access to jupyterhub services

Actual behaviour

Access is denied.

How to reproduce

1. Create two groups in the LDAP directory A and B
2. Add a user to group B
3. Add group B as a member group of group A
4. Set group A as an allowed group using c.LDAPAuthenticator.allowed_groups in jupyterhub_config.py
5. Restart jupyterhub
6. Attempt to login as the user added to group B

Your personal set up

• OS: CentOS7
• Version: 2.2.6
• Configuration: Diff from default config

  # diff /opt/jupyterhub/etc/jupyterhub/jupyterhub_config.py /opt/jupyterhub/etc/jupyterhub/jupyterhub_config.py.default
  98,114d97
  < c.JupyterHub.authenticator_class = 'ldapauthenticator.LDAPAuthenticator'
  <
  < # LDAPAuthenticator settings
  < c.LDAPAuthenticator.server_address = 'ipa01.example.org'
  < c.LDAPAuthenticator.lookup_dn = False
  < c.LDAPAuthenticator.user_attribute = 'uid'
  < c.LDAPAuthenticator.lookup_dn_user_dn_attribute = 'uid'
  < c.LDAPAuthenticator.user_search_base = 'cn=users,cn=accounts,dc=example,dc=org'
  < c.LDAPAuthenticator.bind_dn_template = [ 'uid={username},cn=users,cn=accounts,,dc=example,dc=org' ]
  < c.LDAPAuthenticator.allowed_groups = [
  <     'cn=jupyter-users,cn=groups,cn=accounts,dc=example,dc=org'
  < ]
  <
  123c106
  <
  ---
  > #c.JupyterHub.base_url = '/'
  189d171
  < c.JupyterHub.cookie_secret_file = '/opt/jupyterhub/etc/jupyterhub/jupyterhub_cookie_secret'
  200d181
  < c.JupyterHub.db_url = 'postgresql+psycopg2://jupyter:XXXXX@pgsql.example.org:5432/jupyter'
  390d370
  < c.JupyterHub.named_server_limit_per_user = 5
  404,405d383
  < c.ConfigurableHTTPProxy.pid_file = '/localhome/jupyter/jupyter-proxy.pid'
  <
  493d470
  < c.JupyterHub.spawner_class = 'sudospawner.SudoSpawner'
  692,699d668
  < # Open lab in home directory
  < #c.Spawner.default_url = '/lab/tree/home/{username}'
  < # Opens notebook in home directory
  < #c.Spawner.default_url = '/tree/home/{username}'
  < # Opens lab at /
  < #c.Spawner.default_url = '/lab'
  < # No links
  < c.Spawner.default_url = '/lab/workspaces/lab/tree/home/{username}'
  795d763
  < c.Spawner.notebook_dir = '/'

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[dhirschfeld]

I think this is a dup of https://github.com/jupyterhub/ldapauthenticator/issues/148.

[Aethylred]

It does, looks like they'er covering nested groups in Active Directory, but may not cover the case for FreeIPA/Redhat Identity Manager/389 Directory Server

[Aethylred]

It may also be part of #94

[mk-raven]

Hello! Any update of this issue? We have the same problem, because have a lot of users and nested groups its nice solution