Validate service key name on server side

All requests to post or update service key name are enforced to match:
^[\s a-zA-Z0-9\-_:/]*$

util/validation.py

@@ -15,6 +15,7 @@ MAX_USERNAME_LENGTH = 255
 
 VALID_LABEL_KEY_REGEX = r'^[a-z0-9](([a-z0-9]|[-.](?![.-]))*[a-z0-9])?$'
 VALID_USERNAME_REGEX = r'^([a-z0-9]+(?:[._-][a-z0-9]+)*)$'
+VALID_SERVICE_KEY_NAME_REGEX = r'^[\s a-zA-Z0-9\-_:/]*$'
 
 INVALID_USERNAME_CHARACTERS = r'[^a-z0-9_]'
 
@@ -99,3 +100,7 @@ def validate_postgres_precondition(driver):
       "pg_trgm" extension does not exists in the database.
       Please run `CREATE EXTENSION IF NOT EXISTS pg_trgm;` as superuser on this database.
     """)
+
+
+def validate_service_key_name(name):
+  return name is None or bool(re.match(VALID_SERVICE_KEY_NAME_REGEX, name))