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improve isfile validation check (#3101)

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Pascal Vizeli 2016-09-01 15:35:00 +02:00 • committed by Paulus Schoutsen
parent 87e332c777
commit 5036bb0bc6
5 changed files with 35 additions and 7 deletions
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13
homeassistant/helpers/config_validation.py
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@ -1,5 +1,6 @@
"""Helpers for config validation using voluptuous."""
from datetime import timedelta
import os
from urllib.parse import urlparse
from typing import Any, Union, TypeVar, Callable, Sequence, List, Dict
@ -65,9 +66,17 @@ def boolean(value: Any) -> bool:
return bool(value)
def isfile(value):
def isfile(value: Any) -> str:
"""Validate that the value is an existing file."""
return vol.IsFile('not a file')(value)
if value is None:
raise vol.Invalid('None is not file')
file_in = str(value)
if not os.path.isfile(file_in):
raise vol.Invalid('not a file')
if not os.access(file_in, os.R_OK):
raise vol.Invalid('file not readable')
return file_in
def ensure_list(value: Union[T, Sequence[T]]) -> List[T]: