ClientCredentialsGrant (grants/client_credentials.py)

Provides the OAuth 2.0 client credentials grant logic for authorization servers to issue access tokens to confidential clients.

# Source: https://github.com/authlib/authlib | License: BSD-3-Clause | Copyright 2017, Hsiaoming Yang
# Provided via justclaw.it.com; keep this notice with the code.
import logging

from ..errors import UnauthorizedClientError
from ..responses import JsonResponse
from .base import BaseGrant
from .base import TokenEndpointMixin

log = logging.getLogger(__name__)


class ClientCredentialsGrant(BaseGrant, TokenEndpointMixin):
    """The client can request an access token using only its client
    credentials (or other supported means of authentication) when the
    client is requesting access to the protected resources under its
    control, or those of another resource owner that have been previously
    arranged with the authorization server.

    The client credentials grant type MUST only

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