initial commit

src/ip.py

@@ -0,0 +1,36 @@
+import subprocess
+
+SERVERS = [
+    ("resolver1.opendns.com", "myip.opendns.com"),
+    ("resolver2.opendns.com", "myip.opendns.com"),
+    ("resolver3.opendns.com", "myip.opendns.com"),
+    ("resolver4.opendns.com", "myip.opendns.com"),
+    ("ns1-1.akamaitech.net", "whoami.akamai.net"),
+]
+
+
+def get_public_ip():
+    for server, host in SERVERS:
+        try:
+            result = subprocess.run(
+                [
+                    "dig",
+                    "+short",
+                    host,
+                    f"@{server}",
+                ],
+                capture_output=True,
+                text=True,
+                check=True,
+                timeout=5,
+            )
+
+            ip = result.stdout.strip()
+
+            if ip:
+                return ip
+
+        except Exception:
+            pass
+
+    raise RuntimeError("cannot determine public IP")