Namecheap DDNS Script

ddns.py

#!/usr/bin/env python
# encoding: utf-8

import urllib

NAMECHEAP_BASE_URL = "https://dynamicdns.park-your-domain.com/update?"


def get_public_ip():
    """
    Gets the public ip address of the system
    """
    get_ip_url = "http://api.ipify.org"
    return urllib.urlopen(get_ip_url).read()


def main():
    """
    Update Namecheap's Dynamic DNS with the public ip address of the computer
    that this script is currently running.
    """
    request_params = {
        'host': 'subdomain',
        'domain': 'example.com',
        'password': 'password',
        'ip': get_public_ip(),
    }

    params = urllib.urlencode(request_params)
    response = urllib.urlopen(NAMECHEAP_BASE_URL + params).read()
    if "<ErrCount>0</ErrCount>" not in response:
        print response
        raise Exception("There was an error updating the entry")


if __name__ == '__main__':
    main()