it

utils/helpers.py

@@ -0,0 +1,50 @@
+def _is_valid_domain(domain: str) -> bool:
+    """
+    Basic domain validation.
+
+    Args:
+        domain: Domain string to validate
+
+    Returns:
+        True if domain appears valid
+    """
+    if not domain or len(domain) > 253:
+        return False
+
+    # Check for valid characters and structure
+    parts = domain.split('.')
+    if len(parts) < 2:
+        return False
+
+    for part in parts:
+        if not part or len(part) > 63:
+            return False
+        if not part.replace('-', '').replace('_', '').isalnum():
+            return False
+
+    return True
+
+def _is_valid_ip(ip: str) -> bool:
+    """
+    Basic IP address validation.
+
+    Args:
+        ip: IP address string to validate
+
+    Returns:
+        True if IP appears valid
+    """
+    try:
+        parts = ip.split('.')
+        if len(parts) != 4:
+            return False
+
+        for part in parts:
+            num = int(part)
+            if not 0 <= num <= 255:
+                return False
+
+        return True
+
+    except (ValueError, AttributeError):
+        return False