added ip logging memory improvements, added local ip and public ip exlusion

src/ip_utils.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+
+"""
+IP utility functions for filtering and validating IP addresses.
+Provides common IP filtering logic used across the Krawl honeypot.
+"""
+
+import ipaddress
+from typing import Optional
+
+
+def is_local_or_private_ip(ip_str: str) -> bool:
+    """
+    Check if an IP address is local, private, or reserved.
+    
+    Filters out:
+    - 127.0.0.1 (localhost)
+    - 127.0.0.0/8 (loopback)
+    - 10.0.0.0/8 (private network)
+    - 172.16.0.0/12 (private network)
+    - 192.168.0.0/16 (private network)
+    - 0.0.0.0/8 (this network)
+    - ::1 (IPv6 localhost)
+    - ::ffff:127.0.0.0/104 (IPv6-mapped IPv4 loopback)
+    
+    Args:
+        ip_str: IP address string
+        
+    Returns:
+        True if IP is local/private/reserved, False if it's public
+    """
+    try:
+        ip = ipaddress.ip_address(ip_str)
+        return (
+            ip.is_private
+            or ip.is_loopback
+            or ip.is_reserved
+            or ip.is_link_local
+            or str(ip) in ("0.0.0.0", "::1")
+        )
+    except ValueError:
+        # Invalid IP address
+        return True
+
+
+def is_valid_public_ip(ip: str, server_ip: Optional[str] = None) -> bool:
+    """
+    Check if an IP is public and not the server's own IP.
+    
+    Returns True only if:
+    - IP is not in local/private ranges AND
+    - IP is not the server's own public IP (if server_ip provided)
+    
+    Args:
+        ip: IP address string to check
+        server_ip: Server's public IP (optional). If provided, filters out this IP too.
+        
+    Returns:
+        True if IP is a valid public IP to track, False otherwise
+    """
+    return not is_local_or_private_ip(ip) and (server_ip is None or ip != server_ip)