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https://github.com/skoelle/dyndns-updater.git
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37 lines
1.5 KiB
Python
37 lines
1.5 KiB
Python
# Copyright (c) 2026 Stefan Koelle (https://stefankoelle.de)
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# Licensed under the MIT License. See LICENSE file in project root for details.
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import logging
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import time
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from fritzconnection import FritzConnection
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from fritzconnection.core.exceptions import FritzConnectionException
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log = logging.getLogger("fritzbox")
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class FritzBoxError(Exception):
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pass
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def get_external_ip(
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host: str, port: int, user: str, password: str, retries: int = 3, backoff_seconds=(2, 5, 10)
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) -> str:
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last_exc = None
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for attempt in range(1, retries + 1):
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try:
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fc = FritzConnection(address=host, port=port, user=user, password=password)
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result = fc.call_action("WANIPConn1", "GetExternalIPAddress")
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ip = result.get("NewExternalIPAddress")
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if not ip:
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raise FritzBoxError("Leere Antwort von der FritzBox (kein NewExternalIPAddress)")
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log.info("Externe IP von FritzBox erhalten: %s (Versuch %d/%d)", ip, attempt, retries)
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return ip
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except (FritzConnectionException, FritzBoxError, OSError) as exc:
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last_exc = exc
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log.warning("TR-064-Abfrage fehlgeschlagen (Versuch %d/%d): %s", attempt, retries, exc)
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if attempt < retries:
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sleep_time = backoff_seconds[min(attempt - 1, len(backoff_seconds) - 1)]
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time.sleep(sleep_time)
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raise FritzBoxError(f"Konnte externe IP nach {retries} Versuchen nicht ermitteln: {last_exc}")
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