Fixed scope checking in UserTokenListAPIHandler

jupyterhub/apihandlers/users.py

@@ -301,7 +301,6 @@ class UserTokenListAPIHandler(APIHandler):
 
         self.write(json.dumps({'api_tokens': api_tokens}))
 
-    # @needs_scope('users:tokens') #Todo: needs internal scope checking
     async def post(self, user_name):
         body = self.get_json_body() or {}
         if not isinstance(body, dict):
@@ -330,13 +329,16 @@ class UserTokenListAPIHandler(APIHandler):
         if requester is None:
             # couldn't identify requester
             raise web.HTTPError(403)
+        self._jupyterhub_user = requester
+        self._resolve_scopes()
         user = self.find_user(user_name)
-        if requester is not user and not requester.admin:
-            raise web.HTTPError(403, "Only admins can request tokens for other users")
-        if not user:
-            raise web.HTTPError(404, "No such user: %s" % user_name)
-        if requester is not user:
         kind = 'user' if isinstance(requester, User) else 'service'
+        scope_filter = self.get_scope_filter('users:tokens')
+        if user is None or not scope_filter(user, kind):
+            raise web.HTTPError(
+                404,
+                f"{kind.title()} {user_name} not found or no permissions to generate tokens",
+            )
 
         note = body.get('note')
         if not note:

jupyterhub/tests/test_api.py

@@ -1311,7 +1311,7 @@ async def test_get_new_token(app, headers, status, note, expires_in):
     [
         ('admin', 'other', 200),
         ('admin', 'missing', 404),
-        ('user', 'other', 403),
+        ('user', 'other', 404),
         ('user', 'user', 200),
     ],
 )