From 757fe8cab8b09bc1c2acb6663e193a66b1802fe9 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Thu, 10 Sep 2026 08:40:57 +0000
Subject: [PATCH] Fix unclosed file descriptor in _resolvers_unix

Replaced the direct open().read() pattern in _resolvers_unix with a proper `with open(...)` context manager to ensure the file descriptor for /etc/resolv.conf is deterministically closed, eliminating a potential file descriptor leak.

Co-authored-by: Horizontal42 <75383519+Horizontal42@users.noreply.github.com>
---
 src/netsleuth/netinfo.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/netsleuth/netinfo.py b/src/netsleuth/netinfo.py
index 31badd7..565f503 100644
--- a/src/netsleuth/netinfo.py
+++ b/src/netsleuth/netinfo.py
@@ -201,7 +201,8 @@ def _resolvers_windows() -> dict[str, list[str]]:
 def _resolvers_unix() -> dict[str, list[str]]:
     adapters: dict[str, list[str]] = {}
     try:
-        text = open("/etc/resolv.conf", encoding="utf-8", errors="replace").read()
+        with open("/etc/resolv.conf", encoding="utf-8", errors="replace") as f:
+            text = f.read()
     except OSError:
         text = ""
     servers = [line.split()[1] for line in text.splitlines() if line.startswith("nameserver") and len(line.split()) > 1]