refine macOS service selection

proxy_chain_manager/sysproxy.py

@@ -67,13 +67,31 @@ def _mac_network_services() -> list[str]:
         )
     except Exception:
         return []
-    services: list[str] = []
+    listed: list[str] = []
     for line in (r.stdout or "").splitlines():
-        name = line.strip()
-        if not name or name.startswith("An asterisk"):
+        raw = line.strip()
+        if not raw or raw.startswith("An asterisk"):
             continue
-        services.append(name.lstrip("*").strip())
-    return services
+        # networksetup marks disabled services with a leading '*'.
+        if raw.startswith("*"):
+            continue
+        listed.append(raw)
+
+    enabled: list[str] = []
+    for service in listed:
+        try:
+            chk = subprocess.run(
+                ["networksetup", "-getnetworkserviceenabled", service],
+                capture_output=True,
+                text=True,
+                timeout=8,
+            )
+            out = (chk.stdout or "").strip().lower()
+            if "enabled" in out and "disabled" not in out:
+                enabled.append(service)
+        except Exception:
+            continue
+    return enabled or listed
 
 
 def _mac_run_networksetup(args: list[str]) -> bool:
@@ -156,6 +174,30 @@ def _mac_system_proxy_set() -> bool:
     return False
 
 
+def _mac_service_has_live_ip(service: str) -> bool:
+    try:
+        r = subprocess.run(
+            ["networksetup", "-getinfo", service],
+            capture_output=True,
+            text=True,
+            timeout=8,
+        )
+        info = (r.stdout or "").splitlines()
+    except Exception:
+        return False
+    for line in info:
+        s = line.strip()
+        if s.startswith("IP address:"):
+            ip = s.split(":", 1)[1].strip().lower()
+            if ip and ip != "none" and ip != "0.0.0.0":
+                return True
+        if s.startswith("IPv6:"):
+            v = s.split(":", 1)[1].strip().lower()
+            if v not in ("off", "none"):
+                return True
+    return False
+
+
 def _is_admin() -> bool:
     try:
         return ctypes.windll.shell32.IsUserAnAdmin() != 0  # type: ignore[attr-defined]
@@ -461,7 +503,10 @@ def _read_winhttp_proxy() -> str:
 def diagnose_system_proxy() -> list[str]:
     if sys.platform == "darwin":
         out = []
-        for service in _mac_network_services()[:8]:
+        services = _mac_network_services()
+        active = [s for s in services if _mac_service_has_live_ip(s)]
+        inspect = active[:8] if active else services[:8]
+        for service in inspect:
             try:
                 r = subprocess.run(
                     ["networksetup", "-getwebproxy", service],