First commit

.gitignore

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+auth
+.venv*

auth.template

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+EMAIL=
+PASSWORD=

dyfi.py

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+import argparse
+import logging
+from time import sleep
+
+import requests as r
+
+
+logger = logging.getLogger(__name__)
+
+arg_parser = argparse.ArgumentParser()
+arg_parser.add_argument("-a", "--auth", default="", help="Path to auth file.")
+arg_parser.add_argument("-l", "--log", default="", help="Log to file instead of stdout")
+args = arg_parser.parse_args()
+
+MINUTE_SEC: int = 60
+HOUR_SEC: int = MINUTE_SEC * 60
+DAY_SEC: int = HOUR_SEC * 24
+SLEEP_TIME_SEC: int = DAY_SEC * 5 + HOUR_SEC * 3 + MINUTE_SEC * 14
+
+
+def dyfi_update(email: str, password: str, hostnames: str) -> None:
+    res: r.Response = r.get("https://www.dy.fi/nic/update", params={"hostname": hostnames}, auth=(email, password))
+    if res.status_code != 200:
+        logger.error("dy.fi responded with code {res.status_code}. Response content:\n{res.text}\n")
+    else:
+        logger.info(f"dy.fi responded with 200. Response content: \n{res.text}\n")
+
+
+def parse_auth() -> tuple[str, str, str]:
+    with open(args.auth, "r") as f:
+        lines: list[str] = f.readlines()
+        email_start: int = lines[0].find("EMAIL=")
+        if email_start == -1:
+            logger.error("Invalid auth file. Email not found. Must be in the format:\nEMAIL=<email>\nPASSWORD=<password>\nHOSTNAMES=<hostnames>")
+
+        email_start += len("EMAIL=")
+        email = lines[0][email_start:-1]
+
+        password_start: int = lines[1].find("PASSWORD=")
+        if password_start == -1:
+            logger.error("Invalid auth file. Password not found. Must be in the format:\nEMAIL=<password>\nPASSWORD=<password>\nHOSTNAMES=<hostnames>")
+
+        password_start += len("PASSWORD=")
+        password = lines[1][password_start:-1]
+
+        hostnames_start: int = lines[2].find("HOSTNAMES=")
+        if hostnames_start == -1:
+            logger.error("Invalid auth file. Hostnames not found. Must be in the format:\nEMAIL=<hostnames>\nPASSWORD=<hostnames>\nHOSTNAMES=<hostnames>")
+
+        hostnames_start += len("HOSTNAMES=")
+        hostnames = lines[2][hostnames_start:-1]
+
+        return (email, password, hostnames)
+    
+
+if __name__ == "__main__":
+    logging.basicConfig(filename=args.log, level=logging.INFO, format="(%(asctime)s) %(levelname)s: %(message)s")
+
+    if args.auth == "":
+        logger.error("Must provide a path to an auth file.")
+        exit(1)
+
+    email, password, hostnames = parse_auth()
+
+    while True:
+        dyfi_update(email, password, hostnames)
+        logger.info(f"Sleeping for {SLEEP_TIME_SEC} seconds")
+        sleep(SLEEP_TIME_SEC)

requirements.txt

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+certifi==2026.1.4
+charset-normalizer==3.4.4
+idna==3.11
+requests==2.32.5
+urllib3==2.6.3