Services Authentication¶

Module: `jupyterhub.services.auth`¶

Authenticating services with JupyterHub.

Cookies are sent to the Hub for verification. The Hub replies with a JSON model describing the authenticated user.

HubAuth can be used in any application, even outside tornado.

HubAuthenticated is a mixin class for tornado handlers that should authenticate with the Hub.

`HubAuth`¶

class jupyterhub.services.auth.HubAuth(**kwargs)¶

A class for authenticating with JupyterHub

This can be used by any application.

If using tornado, use via HubAuthenticated mixin. If using manually, use the .user_for_cookie(cookie_value) method to identify the user corresponding to a given cookie value.

The following config must be set:

api_token (token for authenticating with JupyterHub API), fetched from the JUPYTERHUB_API_TOKEN env by default.

The following config MAY be set:

api_url: the base URL of the Hub’s internal API, fetched from JUPYTERHUB_API_URL by default.
cookie_cache_max_age: the number of seconds responses from the Hub should be cached.
login_url (the public /hub/login URL of the Hub).
cookie_name: the name of the cookie I should be using, if different from the default (unlikely).

api_token c.HubAuth.api_token = Unicode('')¶

API key for accessing Hub API.

Generate with jupyterhub token [username] or add to JupyterHub.services config.

api_url c.HubAuth.api_url = Unicode('http://127.0.0.1:8081/hub/api')¶

The base API URL of the Hub.

Typically http://hub-ip:hub-port/hub/api

base_url c.HubAuth.base_url = Unicode('/')¶

The base URL prefix of this application

e.g. /services/service-name/ or /user/name/

Default: get from JUPYTERHUB_SERVICE_PREFIX

cache_max_age c.HubAuth.cache_max_age = Int(300)¶

The maximum time (in seconds) to cache the Hub’s responses for authentication.

A larger value reduces load on the Hub and occasional response lag. A smaller value reduces propagation time of changes on the Hub (rare).

Default: 300 (five minutes)

certfile c.HubAuth.certfile = Unicode('')¶

The ssl cert to use for requests

Use with keyfile

client_ca c.HubAuth.client_ca = Unicode('')¶

The ssl certificate authority to use to verify requests

Use with keyfile and certfile

cookie_name c.HubAuth.cookie_name = Unicode('jupyterhub-services')¶: The name of the cookie I should be looking for

cookie_options c.HubAuth.cookie_options = Dict()¶

Additional options to pass when setting cookies.

Can include things like expires_days=None for session-expiry or secure=True if served on HTTPS and default HTTPS discovery fails (e.g. behind some proxies).

hub_host c.HubAuth.hub_host = Unicode('')¶

The public host of JupyterHub

Only used if JupyterHub is spreading servers across subdomains.

hub_prefix c.HubAuth.hub_prefix = Unicode('/hub/')¶

The URL prefix for the Hub itself.

Typically /hub/

keyfile c.HubAuth.keyfile = Unicode('')¶

The ssl key to use for requests

Use with certfile

login_url c.HubAuth.login_url = Unicode('/hub/login')¶

The login URL to use

Typically /hub/login

get_session_id(handler)¶

Get the jupyterhub session id

from the jupyterhub-session-id cookie.

get_token(handler)¶

Get the user token from a request

in URL parameters: ?token=<token>
in header: Authorization: token <token>

get_user(handler)¶

Get the Hub user for a given tornado handler.

Checks cookie with the Hub to identify the current user.

Parameters

handler (tornado.web.RequestHandler) – the current request handler

Returns

The user model, if a user is identified, None if authentication fails.

The ‘name’ field contains the user’s name.

Return type

user_model (dict)

user_for_cookie(encrypted_cookie, use_cache=True, session_id='')¶

Ask the Hub to identify the user for a given cookie.

Parameters

encrypted_cookie (str) – the cookie value (not decrypted, the Hub will do that)
use_cache (bool) – Specify use_cache=False to skip cached cookie values (default: True)

Returns

The user model, if a user is identified, None if authentication fails.

The ‘name’ field contains the user’s name.

Return type

user_model (dict)

user_for_token(token, use_cache=True, session_id='')¶

Ask the Hub to identify the user for a given token.

Parameters

token (str) – the token
use_cache (bool) – Specify use_cache=False to skip cached cookie values (default: True)

Returns

The user model, if a user is identified, None if authentication fails.

The ‘name’ field contains the user’s name.

Return type

user_model (dict)

`HubOAuth`¶

class jupyterhub.services.auth.HubOAuth(**kwargs)¶

HubAuth using OAuth for login instead of cookies set by the Hub.

api_token c.HubOAuth.api_token = Unicode('')¶

API key for accessing Hub API.

Generate with jupyterhub token [username] or add to JupyterHub.services config.

api_url c.HubOAuth.api_url = Unicode('http://127.0.0.1:8081/hub/api')¶

The base API URL of the Hub.

Typically http://hub-ip:hub-port/hub/api

base_url c.HubOAuth.base_url = Unicode('/')¶

The base URL prefix of this application

e.g. /services/service-name/ or /user/name/

Default: get from JUPYTERHUB_SERVICE_PREFIX

cache_max_age c.HubOAuth.cache_max_age = Int(300)¶

The maximum time (in seconds) to cache the Hub’s responses for authentication.

A larger value reduces load on the Hub and occasional response lag. A smaller value reduces propagation time of changes on the Hub (rare).

Default: 300 (five minutes)

certfile c.HubOAuth.certfile = Unicode('')¶

The ssl cert to use for requests

Use with keyfile

client_ca c.HubOAuth.client_ca = Unicode('')¶

The ssl certificate authority to use to verify requests

Use with keyfile and certfile

cookie_options c.HubOAuth.cookie_options = Dict()¶

Additional options to pass when setting cookies.

Can include things like expires_days=None for session-expiry or secure=True if served on HTTPS and default HTTPS discovery fails (e.g. behind some proxies).

hub_host c.HubOAuth.hub_host = Unicode('')¶

The public host of JupyterHub

Only used if JupyterHub is spreading servers across subdomains.

hub_prefix c.HubOAuth.hub_prefix = Unicode('/hub/')¶

The URL prefix for the Hub itself.

Typically /hub/

keyfile c.HubOAuth.keyfile = Unicode('')¶

The ssl key to use for requests

Use with certfile

login_url c.HubOAuth.login_url = Unicode('/hub/login')¶

The login URL to use

Typically /hub/login

oauth_authorization_url c.HubOAuth.oauth_authorization_url = Unicode('/hub/api/oauth2/authorize')¶: The URL to redirect to when starting the OAuth process

oauth_client_id c.HubOAuth.oauth_client_id = Unicode('')¶

The OAuth client ID for this application.

Use JUPYTERHUB_CLIENT_ID by default.

oauth_redirect_uri c.HubOAuth.oauth_redirect_uri = Unicode('')¶

OAuth redirect URI

Should generally be /base_url/oauth_callback

oauth_token_url c.HubOAuth.oauth_token_url = Unicode('')¶: The URL for requesting an OAuth token from JupyterHub

clear_cookie(handler)¶: Clear the OAuth cookie

property cookie_name¶

Use OAuth client_id for cookie name

because we don’t want to use the same cookie name across OAuth clients.

generate_state(next_url=None, **extra_state)¶

Generate a state string, given a next_url redirect target

Parameters: (str) (next_url) –
Returns: state (str)
Return type: The base64-encoded state string.

get_next_url(b64_state='')¶: Get the next_url for redirection, given an encoded OAuth state

get_state_cookie_name(b64_state='')¶

Get the cookie name for oauth state, given an encoded OAuth state

Cookie name is stored in the state itself because the cookie name is randomized to deal with races between concurrent oauth sequences.

set_cookie(handler, access_token)¶: Set a cookie recording OAuth result

set_state_cookie(handler, next_url=None)¶

Generate an OAuth state and store it in a cookie

Parameters

(RequestHandler) (handler) –
(str) (next_url) –

Returns

state (str)

Return type

The OAuth state that has been stored in the cookie (url safe, base64-encoded)

property state_cookie_name¶

The cookie name for storing OAuth state

This cookie is only live for the duration of the OAuth handshake.

token_for_code(code)¶

Get token for OAuth temporary code

This is the last step of OAuth login. Should be called in OAuth Callback handler.

Parameters: code (str) – oauth code for finishing OAuth login
Returns: JupyterHub API Token
Return type: token (str)

`HubAuthenticated`¶

class jupyterhub.services.auth.HubAuthenticated¶

Mixin for tornado handlers that are authenticated with JupyterHub

A handler that mixes this in must have the following attributes/properties:

.hub_auth: A HubAuth instance
.hub_users: A set of usernames to allow. If left unspecified or None, username will not be checked.
.hub_groups: A set of group names to allow. If left unspecified or None, groups will not be checked.

Examples:

class MyHandler(HubAuthenticated, web.RequestHandler):
    hub_users = {'inara', 'mal'}

    def initialize(self, hub_auth):
        self.hub_auth = hub_auth

    @web.authenticated
    def get(self):
        ...

property allow_all¶: Property indicating that all successfully identified user or service should be allowed.

check_hub_user(model)¶

Check whether Hub-authenticated user or service should be allowed.

Returns the input if the user should be allowed, None otherwise.

Override if you want to check anything other than the username’s presence in hub_users list.

Parameters: model (dict) – the user or service model returned from HubAuth
Returns: The user model if the user should be allowed, None otherwise.
Return type: user_model (dict)

get_current_user()¶

Tornado’s authentication method

Returns: The user model, if a user is identified, None if authentication fails.
Return type: user_model (dict)

get_login_url()¶: Return the Hub’s login URL

hub_auth_class¶: alias of HubAuth

`HubOAuthenticated`¶

class jupyterhub.services.auth.HubOAuthenticated¶: Simple subclass of HubAuthenticated using OAuth instead of old shared cookies

`HubOAuthCallbackHandler`¶

class jupyterhub.services.auth.HubOAuthCallbackHandler(application: tornado.web.Application, request: tornado.httputil.HTTPServerRequest, **kwargs: Any)¶

OAuth Callback handler

Finishes the OAuth flow, setting a cookie to record the user’s info.

Should be registered at SERVICE_PREFIX/oauth_callback

Services Contributing

Services Authentication¶

Module: jupyterhub.services.auth¶

HubAuth¶

HubOAuth¶

HubAuthenticated¶

HubOAuthenticated¶

HubOAuthCallbackHandler¶

Module: `jupyterhub.services.auth`¶

`HubAuth`¶

`HubOAuth`¶

`HubAuthenticated`¶

`HubOAuthenticated`¶

`HubOAuthCallbackHandler`¶