Extract raising error on client auth failure.

1 files changed, 11 insertions, 1 deletions

diff --git a/oauthlib/oauth2/rfc6749/endpoints/base.py b/oauthlib/oauth2/rfc6749/endpoints/base.py
index 7a121fa..638311d 100644
--- a/oauthlib/oauth2/rfc6749/endpoints/base.py
+++ b/oauthlib/oauth2/rfc6749/endpoints/base.py
@@ -12,7 +12,8 @@ import functools
 import logging
 
 from ..errors import (FatalClientError, OAuth2Error, ServerError,
-                      TemporarilyUnavailableError, InvalidRequestError)
+                      TemporarilyUnavailableError, InvalidRequestError,
+                      InvalidClientError)
 
 log = logging.getLogger(__name__)
 
@@ -44,6 +45,15 @@ class BaseEndpoint(object):
         if not request.token:
             raise InvalidRequestError(request=request,
                                       description='Missing token parameter.')
+    def _raise_on_invalid_client(self, request):
+        """Raise on failed client authentication."""
+        if self.request_validator.client_authentication_required(request):
+            if not self.request_validator.authenticate_client(request):
+                log.debug('Client authentication failed, %r.', request)
+                raise InvalidClientError(request=request)
+        elif not self.request_validator.authenticate_client_id(request.client_id, request):
+            log.debug('Client authentication failed, %r.', request)
+            raise InvalidClientError(request=request)
 
 
 def catch_errors_and_unavailability(f):