From 687d242d89aa7c45b1bf85654bf4cf6cf6b88b5b Mon Sep 17 00:00:00 2001
From: Yaro Kasear <git@kasear.net>
Date: Wed, 7 May 2025 08:04:02 -0500
Subject: [PATCH] Refactor subprocess calls to use safe_call for improved error
 handling

---
 listener.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/listener.py b/listener.py
index 1f2a13a..77dc4d3 100755
--- a/listener.py
+++ b/listener.py
@@ -39,6 +39,12 @@ vendor_cache = {}
 CHANNEL_LIST = [1, 6, 11, 36, 40, 48, 52, 64, 100, 104, 108, 112, 149, 153, 161] # Channels to hop
 CHANNEL_HOP_INTERVAL = 5   # Seconds per channel
 
+def safe_call(cmd):
+    try:
+        subprocess.check_call(cmd)
+    except subprocess.CalledProcessError as e:
+        print(f"[!] Command failed: {' '.join(cmd)}\n{e}")
+
 def get_channel_from_freq(freq):
     if 2412 <= freq <= 2472:
         return (freq - 2407) // 5
@@ -202,11 +208,11 @@ def write_csv(outfile):
 def reset_interface(interface):
     print(f"[~] Resetting interface {interface} to default state...")
     try:
-        subprocess.call(["ip", "link", "set", interface, "down"])
+        safe_call(["ip", "link", "set", interface, "down"])
         time.sleep(1)
-        subprocess.call(["iw", interface, "set", "type", "monitor"])
+        safe_call(["iw", interface, "set", "type", "monitor"])
         time.sleep(1)
-        subprocess.call(["ip", "link", "set", interface, "up"])
+        safe_call(["ip", "link", "set", interface, "up"])
         time.sleep(1)
         print(f"[+] Interface {interface} reset complete.")
     except Exception as e: