livedns.py

#!/usr/bin/env python3

import urllib.request
import sys
import json
import ssl

api_key = ''
ENDPOINT = 'https://api.gandi.net/v5/livedns'

def get_gandi_ip(domain, hostname):
    req = urllib.request.Request('%s/domains/%s/records/%s/A' % (ENDPOINT, domain, hostname))
    req.add_header('Authorization', 'Apikey %s' % api_key)
    response = urllib.request.urlopen(req, context = ssl.create_default_context()).read()
    payload = json.loads(response.decode('utf-8'))
    return payload['rrset_values'][0]

def set_gandi_ip(addr, domain, hostname):
    update = {
       'rrset_name': hostname,
       'rrset_type': 'A',
       'rrset_values': [addr],
       'rrset_ttl': 300,
    }

    req = urllib.request.Request('%s/domains/%s/records/%s/A' % (ENDPOINT, domain, hostname), method='PUT')
    req.add_header('Authorization', 'Apikey %s' % api_key)
    req.add_header('Content-Type', 'application/json')
    response = urllib.request.urlopen(req, data = json.dumps(update).encode('utf-8'), context = ssl.create_default_context()).read()
    payload = json.loads(response.decode('utf-8'))


#       good -  Update successfully.
#       nochg - Update successfully but the IP address have not changed.
#       nohost - The hostname specified does not exist in this user account.
#       abuse - The hostname specified is blocked for update abuse.
#       notfqdn - The hostname specified is not a fully-qualified domain name.
#       badauth - Authenticate failed.
#       911 - There is a problem or scheduled maintenance on provider side
#       badagent - The user agent sent bad request(like HTTP method/parameters is not permitted)
#       badresolv - Failed to connect to  because failed to resolve provider address.
#       badconn - Failed to connect to provider because connection timeout.


if __name__ == '__main__':

    if len(sys.argv) != 5:
        print("Usage: livedns <username> <api key> <fqdn> <ip>")
        sys.exit(1)

    username = sys.argv[1] # ignored
    api_key = sys.argv[2]
    fqdn = sys.argv[3]
    ip = sys.argv[4]

    dot = fqdn.find('.')
    if dot == -1:
        print('notfqdn')
        exit()

    # if this is a top domain (a-la kofemann.dev) then use '@' as a special placeholder for empty name
    if fqdn.find('.', dot + 1) == -1:
        hostname = '@'
        domain = fqdn
    else:
        hostname = fqdn[:dot]
        domain = fqdn[dot+1:]

    try:
        set_gandi_ip(ip, domain, hostname)
        new_ip = get_gandi_ip(domain, hostname)
        print('good')
    except urllib.error.HTTPError as e:
        if e.code == 401:
            print('badauth')

    exit()