Merge branch 'downstream' into devel

awx/api/generics.py

@@ -51,6 +51,7 @@ from awx.main.utils import (
     StubLicense
 )
 from awx.main.utils.db import get_all_field_names
+from awx.main.views import ApiErrorView
 from awx.api.serializers import ResourceAccessListElementSerializer, CopySerializer, UserSerializer
 from awx.api.versioning import URLPathVersioning
 from awx.api.metadata import SublistAttachDetatchMetadata, Metadata
@@ -188,6 +189,29 @@ class APIView(views.APIView):
         '''
         Log warning for 400 requests.  Add header with elapsed time.
         '''
+
+        #
+        # If the URL was rewritten, and we get a 404, we should entirely
+        # replace the view in the request context with an ApiErrorView()
+        # Without this change, there will be subtle differences in the BrowseableAPIRenderer
+        #
+        # These differences could provide contextual clues which would allow
+        # anonymous users to determine if usernames were valid or not
+        # (e.g., if an anonymous user visited `/api/v2/users/valid/`, and got a 404,
+        # but also saw that the page heading said "User Detail", they might notice
+        # that's a difference in behavior from a request to `/api/v2/users/not-valid/`, which
+        # would show a page header of "Not Found").  Changing the view here
+        # guarantees that the rendered response will look exactly like the response
+        # when you visit a URL that has no matching URL paths in `awx.api.urls`.
+        #
+        if response.status_code == 404 and 'awx.named_url_rewritten' in request.environ:
+            self.headers.pop('Allow', None)
+            response = super(APIView, self).finalize_response(request, response, *args, **kwargs)
+            view = ApiErrorView()
+            setattr(view, 'request', request)
+            response.renderer_context['view'] = view
+            return response
+
         if response.status_code >= 400:
             status_msg = "status %s received by user %s attempting to access %s from %s" % \
                          (response.status_code, request.user, request.path, request.META.get('REMOTE_ADDR', None))

awx/api/views/__init__.py

@@ -14,6 +14,8 @@ import time
 from base64 import b64encode
 from collections import OrderedDict
 
+from urllib3.exceptions import ConnectTimeoutError
+
 
 # Django
 from django.conf import settings
@@ -171,6 +173,15 @@ def api_exception_handler(exc, context):
         exc = ParseError(exc.args[0])
     if isinstance(context['view'], UnifiedJobStdout):
         context['view'].renderer_classes = [renderers.BrowsableAPIRenderer, JSONRenderer]
+    if isinstance(exc, APIException):
+        req = context['request']._request
+        if 'awx.named_url_rewritten' in req.environ and not str(getattr(exc, 'status_code', 0)).startswith('2'):
+            # if the URL was rewritten, and it's not a 2xx level status code,
+            # revert the request.path to its original value to avoid leaking
+            # any context about the existance of resources
+            req.path = req.environ['awx.named_url_rewritten']
+            if exc.status_code == 403:
+                exc = NotFound(detail=_('Not found.'))
     return exception_handler(exc, context)
 
 
@@ -1397,10 +1408,18 @@ class CredentialExternalTest(SubDetailAPIView):
             obj.credential_type.plugin.backend(**backend_kwargs)
             return Response({}, status=status.HTTP_202_ACCEPTED)
         except requests.exceptions.HTTPError as exc:
-            message = 'HTTP {}\n{}'.format(exc.response.status_code, exc.response.text)
+            message = 'HTTP {}'.format(exc.response.status_code)
             return Response({'inputs': message}, status=status.HTTP_400_BAD_REQUEST)
         except Exception as exc:
-            return Response({'inputs': str(exc)}, status=status.HTTP_400_BAD_REQUEST)
+            message = exc.__class__.__name__
+            args = getattr(exc, 'args', [])
+            for a in args:
+                if isinstance(
+                    getattr(a, 'reason', None),
+                    ConnectTimeoutError
+                ):
+                    message = str(a.reason)
+            return Response({'inputs': message}, status=status.HTTP_400_BAD_REQUEST)
 
 
 class CredentialInputSourceDetail(RetrieveUpdateDestroyAPIView):
@@ -1449,10 +1468,18 @@ class CredentialTypeExternalTest(SubDetailAPIView):
             obj.plugin.backend(**backend_kwargs)
             return Response({}, status=status.HTTP_202_ACCEPTED)
         except requests.exceptions.HTTPError as exc:
-            message = 'HTTP {}\n{}'.format(exc.response.status_code, exc.response.text)
+            message = 'HTTP {}'.format(exc.response.status_code)
             return Response({'inputs': message}, status=status.HTTP_400_BAD_REQUEST)
         except Exception as exc:
-            return Response({'inputs': str(exc)}, status=status.HTTP_400_BAD_REQUEST)
+            message = exc.__class__.__name__
+            args = getattr(exc, 'args', [])
+            for a in args:
+                if isinstance(
+                    getattr(a, 'reason', None),
+                    ConnectTimeoutError
+                ):
+                    message = str(a.reason)
+            return Response({'inputs': message}, status=status.HTTP_400_BAD_REQUEST)
 
 
 class HostRelatedSearchMixin(object):