Files
edx-platform/openedx/core/djangoapps/util/helpers.py
2015-10-29 20:07:51 +05:00

49 lines
1.4 KiB
Python

"""
Common helpers methods for django apps.
"""
import logging
from provider.oauth2.models import AccessToken, Client
from provider.utils import now
from django.core.exceptions import ImproperlyConfigured
log = logging.getLogger(__name__)
def get_id_token(user, client_name):
"""Generates a JWT ID-Token, using or creating user's OAuth access token.
Arguments:
user (User Object): User for which we need to get JWT ID-Token
client_name (unicode): Name of the OAuth2 Client
Returns:
String containing the signed JWT value or raise the exception
'ImproperlyConfigured'
"""
# TODO: there's a circular import problem somewhere which is why we do the oidc import inside of this function.
import oauth2_provider.oidc as oidc
try:
client = Client.objects.get(name=client_name)
except Client.DoesNotExist:
raise ImproperlyConfigured("OAuth2 Client with name '%s' is not present in the DB" % client_name)
access_tokens = AccessToken.objects.filter(
client=client,
user__username=user.username,
expires__gt=now()
).order_by('-expires')
if access_tokens:
access_token = access_tokens[0]
else:
access_token = AccessToken.objects.create(client=client, user=user)
id_token = oidc.id_token(access_token)
secret = id_token.access_token.client.client_secret
return id_token.encode(secret)