Refactor settings loading to use auto-detection and improve error handling

listener.py

@@ -1,19 +1,31 @@
-#!/usr/bin/env python3
 import os
 import signal
 import time
 from collections import defaultdict
 from scapy.all import sniff, Dot11, RadioTap
-from dotenv import dotenv_values
+from dotenv import load_dotenv
+from pathlib import Path
 
-settings_path = os.path.expanduser("~/wifi_test/settings.env")
-config = dotenv_values(settings_path)
+# --- Settings.env auto-detection logic ---
+SCRIPT_DIRECTORY = Path(__file__).resolve().parent
 
-if not config:
-    print(f"[!] Failed to load settings from {settings_path}")
+# Try intelligent guess of real user home even under sudo
+SUDO_USER = os.environ.get("SUDO_USER")
+USER_HOME = Path(f"/home/{SUDO_USER}") if SUDO_USER else Path.home()
+ENV_PATH = USER_HOME / "wifi_test" / "settings.env"
+
+# Fallback if all else fails
+if not ENV_PATH.exists():
+    ENV_PATH = Path("/home/yaro/wifi_test/settings.env")
+
+if not ENV_PATH.exists():
+    print(f"[!] Failed to load settings from {ENV_PATH}")
     exit(1)
 
-LISTEN_INTERFACE = config.get("LISTEN_INTERFACE", "wlan0")
+load_dotenv(dotenv_path=ENV_PATH)
+
+# Now load settings
+LISTEN_INTERFACE = os.getenv("LISTEN_INTERFACE", "wlan0")
 print(f"[+] Using LISTEN_INTERFACE = {LISTEN_INTERFACE}")
 
 # === Globals ===