initial commit

Dockerfile

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+FROM python:3.12
+RUN apt-get update && apt -y install cron python3 pip
+RUN pip install requests
+WORKDIR /app
+COPY crontab /etc/cron.d/crontab
+COPY update-cloudflare.py ./update-cloudflare.py
+RUN chmod 0644 /etc/cron.d/crontab
+RUN /usr/bin/crontab /etc/cron.d/crontab
+CMD ["cron", "-f"]

README.md

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+# Usage
+

crontab

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+# Run update-cloudflare.py every 5 minutes
+*/10 * * * * python /app/update-cloudflare.py > /proc/1/fd/1 2>/proc/1/fd/2

update-cloudflare.py

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+#!/usr/bin/python
+
+import requests
+import os
+
+def main():
+
+    # Load environment variables
+    ZONE_NAME = os.getenv("ZONE_NAME")
+    NAME = os.getenv("NAME")
+    IS_PROXIED = os.getenv("IS_PROXIED").lower() == 'true'
+    EMAIL = os.getenv("EMAIL")
+    API_KEY = os.getenv("API_KEY")
+
+    auth_headers = {
+        'X-Auth-Email': EMAIL,
+        'X-Auth-Key': API_KEY,
+    }
+
+    # Get my IP
+    public_ip = get_public_ip()
+
+    # Get zone ID
+    zone = get_first_zone_by_name(ZONE_NAME, auth_headers)
+
+    # Get record ID
+    record = get_first_record_by_name(zone['id'], NAME, auth_headers)
+
+    # Check if IP has changed
+    if record['content'] == public_ip:
+        print('IP has not changed.')
+        return
+
+    # Create new record
+    new_record = {
+        'content': public_ip,
+        'name': NAME,
+        'proxied': IS_PROXIED,
+        'type': 'A',
+        'comment': 'Updated automatically.',
+    }
+
+    # Update record
+    put_record(zone['id'], record['id'], new_record, auth_headers)
+
+# Get public IP
+def get_public_ip():
+    public_ip_response = requests.get('https://checkip.amazonaws.com')
+    if public_ip_response.status_code != 200:
+        raise Exception(f'Could not get public IP: {public_ip_response.text}')
+
+    return public_ip_response.text.strip()
+
+# Get zone from a zone name
+def get_first_zone_by_name(zone_name, headers):
+    zone_id_response = requests.get(
+        f'https://api.cloudflare.com/client/v4/zones?name={zone_name}&status=active',
+        headers=headers
+    )
+    if zone_id_response.status_code != 200:
+        raise Exception(f'Could not get zone ID: {zone_id_response.json()}')
+    if len(zone_id_response.json()['result']) == 0:
+        raise Exception(f'Zone not found: {zone_name}')
+        return False
+
+    return zone_id_response.json()['result'][0]
+
+# Get record from a zone ID and record name
+def get_first_record_by_name(zone_id, name, headers):
+    record_id_response = requests.get(
+        f'https://api.cloudflare.com/client/v4/zones/{zone_id}/dns_records?type=A&name={name}',
+        headers=headers
+    )
+    if record_id_response.status_code != 200:
+        print(f'Could not get record ID: {record_id_response.json()}')
+        return False
+    if len(record_id_response.json()['result']) == 0:
+        print(f'Record not found: {name}')
+        return False
+
+    return record_id_response.json()['result'][0]
+
+# Udates the record with the new one specified
+def put_record(zone_id, record_id, record, headers):
+    update_response = requests.put(
+        f'https://api.cloudflare.com/client/v4/zones/{zone_id}/dns_records/{record_id}',
+        headers=headers,
+        json=record
+    )
+    if update_response.status_code != 200:
+        print(f'Could not update record: {update_response.json()}')
+        return False
+
+
+if __name__ == "__main__":
+    main()