API V3: Don't allow leaking teams through expandable fields

docs/user/api/v3.rst

@@ -202,7 +202,8 @@ Projects list
 
       :Query Parameters:
 
-         * **expand** (*string*) -- with ``organization`` and ``teams``.
+         * **expand** (*string*) -- Allows to add/expand some extra fields in the response.
+           Allowed values are: ``organization``.
 
 
 
@@ -314,7 +315,8 @@ Project details
 
       :Query Parameters:
 
-         * **expand** (*string*) -- with ``organization`` and ``teams``.
+         * **expand** (*string*) -- Allows to add/expand some extra fields in the response.
+           Allowed values are: ``organization``.
 
     .. note::
 
@@ -1730,6 +1732,58 @@ Organization projects list
            ]
        }
 
+Organization teams list
++++++++++++++++++++++++
+
+.. http:get:: /api/v3/organizations/(string:organization_slug)/teams/
+
+    Retrieve list of teams under an organization.
+
+    **Example request**:
+
+    .. tabs::
+
+        .. code-tab:: bash
+
+            $ curl -H "Authorization: Token <token>" https://readthedocs.com/api/v3/organizations/pypa/teams/
+
+        .. code-tab:: python
+
+            import requests
+            URL = 'https://readthedocs.com/api/v3/organizations/pypa/teams/'
+            TOKEN = '<token>'
+            HEADERS = {'Authorization': f'token {TOKEN}'}
+            response = requests.get(URL, headers=HEADERS)
+            print(response.json())
+
+    **Example response**:
+
+    .. sourcecode:: json
+
+       {
+          "count": 2,
+          "next": null,
+          "previous": null,
+          "results": [
+             {
+                   "access": "admin",
+                   "created": "2024-07-01T21:19:55.573819Z",
+                   "modified": "2024-07-01T21:19:55.573837Z",
+                   "name": "Admins",
+                   "slug": "admins"
+             },
+             {
+                   "access": "readonly",
+                   "created": "2024-07-01T21:19:55.593815Z",
+                   "modified": "2024-07-01T21:19:55.593829Z",
+                   "name": "Read Only",
+                   "slug": "read-only"
+             }
+          ]
+       }
+
+    :query string expand: Allows to add/expand some extra fields in the response.
+                          Allowed values are: ``members``.
 
 Remote organizations
 ~~~~~~~~~~~~~~~~~~~~

readthedocs/api/v3/mixins.py

@@ -188,12 +188,17 @@ class OrganizationQuerySetMixin(NestedParentObjectMixin):
     """
 
     def has_admin_permission(self, user, organization):
+        """Check if user is an owner of the organization."""
         if self.admin_organizations(user).filter(pk=organization.pk).exists():
             return True
 
         return False
 
     def is_admin_member(self, user, organization):
+        """Check if user is an owner or belongs to a team with admin permissions of the organization."""
+        if self.has_admin_permission(user, organization):
+            return True
+
         return (
             Project.objects.for_admin_user(user=user)
             .filter(organizations__in=[organization])

readthedocs/api/v3/serializers.py

@@ -802,20 +802,10 @@ class Meta:
             # NOTE: we use a serializer without expandable fields to avoid
             # leaking information about the organization through the project.
             "organization": (
-                "readthedocs.api.v3.serializers.OrganizationSerializerWithoutExpandableFields",
+                "readthedocs.api.v3.serializers.OrganizationSerializer",
                 # NOTE: we cannot have a Project with multiple organizations.
                 {"source": "organizations.first"},
             ),
-            # NOTE: we are leaking the slugs of all teams linked to this project
-            # to anyone with access to this prtoject. It's only the slug, but still.
-            "teams": (
-                serializers.SlugRelatedField,
-                {
-                    "slug_field": "slug",
-                    "many": True,
-                    "read_only": True,
-                },
-            ),
         }
 
     def __init__(self, *args, **kwargs):
@@ -1183,7 +1173,7 @@ class Meta:
         }
 
 
-class OrganizationSerializerWithoutExpandableFields(FlexFieldsModelSerializer):
+class OrganizationSerializer(serializers.ModelSerializer):
     created = serializers.DateTimeField(source="pub_date")
     modified = serializers.DateTimeField(source="modified_date")
     owners = UserSerializer(many=True)
@@ -1206,17 +1196,6 @@ class Meta:
         )
 
 
-class OrganizationSerializerWithExpandableFields(
-    OrganizationSerializerWithoutExpandableFields
-):
-    class Meta(OrganizationSerializerWithoutExpandableFields.Meta):
-        expandable_fields = {
-            # TODO: we are leaking all teams and its members to anyone who is
-            # an admin member of the organization.
-            "teams": (TeamSerializer, {"many": True}),
-        }
-
-
 class RemoteOrganizationSerializer(serializers.ModelSerializer):
     class Meta:
         model = RemoteOrganization

readthedocs/api/v3/urls.py

@@ -8,6 +8,7 @@
     NotificationsOrganizationViewSet,
     NotificationsProjectViewSet,
     NotificationsUserViewSet,
+    OrganizationsTeamsViewSet,
     OrganizationsViewSet,
     ProjectsViewSet,
     RedirectsViewSet,
@@ -141,6 +142,13 @@
     parents_query_lookups=["organization__slug"],
 )
 
+organizations.register(
+    "teams",
+    OrganizationsTeamsViewSet,
+    basename="organizations-teams",
+    parents_query_lookups=["organization__slug"],
+)
+
 # allows /api/v3/notifications/
 router.register(
     r"notifications",

readthedocs/api/v3/views.py

@@ -35,7 +35,7 @@
     RemoteRepository,
     RemoteRepositoryRelation,
 )
-from readthedocs.organizations.models import Organization
+from readthedocs.organizations.models import Organization, Team
 from readthedocs.projects.models import (
     EnvironmentVariable,
     Project,
@@ -72,7 +72,7 @@
     BuildSerializer,
     EnvironmentVariableSerializer,
     NotificationSerializer,
-    OrganizationSerializerWithExpandableFields,
+    OrganizationSerializer,
     ProjectCreateSerializer,
     ProjectSerializer,
     ProjectUpdateSerializer,
@@ -83,6 +83,7 @@
     SubprojectCreateSerializer,
     SubprojectDestroySerializer,
     SubprojectSerializer,
+    TeamSerializer,
     UserSerializer,
     VersionSerializer,
     VersionUpdateSerializer,
@@ -692,7 +693,7 @@ class OrganizationsViewSetBase(
     # Also note that Read the Docs for Business expose this endpoint already.
 
     model = Organization
-    serializer_class = OrganizationSerializerWithExpandableFields
+    serializer_class = OrganizationSerializer
     queryset = Organization.objects.none()
     permission_classes = (IsAuthenticated,)
 
@@ -721,6 +722,21 @@ def get_view_name(self):
         return f"Organizations Projects {self.suffix}"
 
 
+class OrganizationsTeamsViewSet(
+    APIv3Settings,
+    NestedViewSetMixin,
+    OrganizationQuerySetMixin,
+    FlexFieldsMixin,
+    ListModelMixin,
+    GenericViewSet,
+):
+    model = Team
+    queryset = Team.objects.all()
+    serializer_class = TeamSerializer
+    permission_classes = [IsAuthenticated & IsOrganizationAdmin]
+    permit_list_expands = ["members"]
+
+
 class NotificationsOrganizationViewSet(
     APIv3Settings,
     NestedViewSetMixin,