Add trusted_users in trusted networks auth provider (#22478)

homeassistant/helpers/config_validation.py

@@ -8,6 +8,7 @@ from datetime import (timedelta, datetime as datetime_sys,
 from socket import _GLOBAL_DEFAULT_TIMEOUT
 from typing import Any, Union, TypeVar, Callable, Sequence, Dict, Optional
 from urllib.parse import urlparse
+from uuid import UUID
 
 import voluptuous as vol
 from pkg_resources import parse_version
@@ -532,6 +533,20 @@ def x10_address(value):
     return str(value).lower()
 
 
+def uuid4_hex(value):
+    """Validate a v4 UUID in hex format."""
+    try:
+        result = UUID(value, version=4)
+    except (ValueError, AttributeError, TypeError) as error:
+        raise vol.Invalid('Invalid Version4 UUID', error_message=str(error))
+
+    if result.hex != value.lower():
+        # UUID() will create a uuid4 if input is invalid
+        raise vol.Invalid('Invalid Version4 UUID')
+
+    return result.hex
+
+
 def ensure_list_csv(value: Any) -> Sequence:
     """Ensure that input is a list or make one from comma-separated string."""
     if isinstance(value, str):