.gitignore

@@ -1 +0,0 @@
-__pycache__/

src/ddns_update.py

@@ -8,7 +8,6 @@ from os import environ
 from netifaces import interfaces, ifaddresses, AF_INET6
 from ipaddress import ip_address
 from time import sleep
-import socket
 
 logging.basicConfig(level=logging.INFO, format="%(asctime)-15s - %(name)s %(levelname)-8s: %(message)s")
 log = logging.getLogger("ddns updater")
@@ -34,7 +33,7 @@ def response_successful(response_text):
 
 
 def ddns_update(host, key, ip):
-    url = f"https://dyndns.strato.com/nic/update?hostname={host}&myip={ip}"
+    url = f"https://dyndns.strato_.com/nic/update?hostname={host}&myip={ip}"
 
     try:
         response = requests.get(url, auth=(host, key), timeout=3)
@@ -46,7 +45,7 @@ def ddns_update(host, key, ip):
         response.raise_for_status()
 
         if not response_successful(response.text):
-            raise RequestException(f"update to {ip} failed")
+            raise RequestException("update failed")
 
     except RequestException as error:
         log.error(response.text.strip())
@@ -54,7 +53,7 @@ def ddns_update(host, key, ip):
         return False
 
     log.debug(response.text.strip())
-    log.info(f"update to {ip} successful")
+    log.info("update successful")
 
     return True
 
@@ -63,17 +62,17 @@ def ddns_update(host, key, ip):
 @click.option(
     "--host",
     required=True,
+    default=lambda: environ.get("DDNS_HOST", None),
     help="The dns name to update",
 )
 @click.option(
     "--key",
     required=True,
+    default=lambda: environ.get("DDNS_KEY", None),
     help="The ddns authorization key",
 )
 def loop_ddns_update(host, key):
-    last_ip = ip_address(socket.getaddrinfo(host, None, socket.AF_INET6)[0][4][0])
+    last_ip = None
-    log.info(f"currently registered address: {last_ip}")
-
     while True:
         current_ip = get_global_ipv6()
         if current_ip != last_ip:
@@ -85,5 +84,4 @@ def loop_ddns_update(host, key):
 
 
 if __name__ == "__main__":
-    log.info("starting...")
+    loop_ddns_update()
-    loop_ddns_update(auto_envvar_prefix="DDNS")

src/test_ddns_update.py

@@ -1,20 +0,0 @@
-import unittest
-from .ddns_update import response_successful
-
-class TestDdnsUpdate(unittest.TestCase):
-
-    def test_response_successful(self):
-        self.assertTrue(response_successful("good"))
-        self.assertTrue(response_successful("good 1.2.3.4"))
-        self.assertTrue(response_successful("good abcd:abcd:abcd:abcd:abcd:abcd:abcd:abcd"))
-        self.assertTrue(response_successful("nochg"))
-        self.assertTrue(response_successful("nochg 1.2.3.4"))
-        self.assertTrue(response_successful("nochg abcd:abcd:abcd:abcd:abcd:abcd:abcd:abcd"))
-        self.assertFalse(response_successful("notfqdn"))
-        self.assertFalse(response_successful("nohost"))
-        self.assertFalse(response_successful("numhost"))
-        self.assertFalse(response_successful("abuse"))
-        self.assertFalse(response_successful("badagent"))
-        self.assertFalse(response_successful("dnserr"))
-        self.assertFalse(response_successful("911"))
-