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"""
ddupdate plugin updating data on namecheap.com
See: ddupdate(8)
See: https://www.namecheap.com/support/knowledgebase/article.aspx/29/11/how-to-dynamically-update-the-hosts-ip-with-an-http-request/
"""
from ddupdate.ddplugin import ServicePlugin, ServiceError
from ddupdate.ddplugin import get_response, get_netrc_auth
import xml.etree.ElementTree as ET
class NamecheapPlugin(ServicePlugin):
"""
Update a dns entry on namecheap.com
As usual, any host updated must first be defined in the web UI.
Supports most address plugins including default-web-ip, default-if
and ip-disabled. ipv6 is supported
Access to the service requires an API token. This is available in the
website account.
netrc: Use a line like
machine namecheap.com login {domainname} password {namecheap hostname passwd}
Options:
None
"""
_name = 'namecheap.com'
_oneliner = 'Updates on http://namecheap.com'
_url = "https://dynamicdns.park-your-domain.com/update?host={0}&domain={1}&ip={2}&password={3}"
def _etree_to_dict(self, t):
""" https://stackoverflow.com/questions/7684333/converting-xml-to-dictionary-using-elementtree/68082847#68082847 """
if type(t) is ET.ElementTree: return self._etree_to_dict(t.getroot())
return {
**t.attrib,
'text': t.text,
**{e.tag: self._etree_to_dict(e) for e in t}
}
def register(self, log, hostname, ip, options):
"""Implement ServicePlugin.register()."""
password = get_netrc_auth(self._name)[1]
# domain is last two elements of 'host'
domain = '.'.join(hostname.split('.')[-2:])
# hostname is everything above the last two elements of 'host'
host = '.'.join(hostname.split('.')[:-2])
# handle the special case of co.uk
# it is the only second-level domain namecheap support
if domain == "co.uk":
domain = '.'.join(hostname.split('.')[-3:])
host = '.'.join(hostname.split('.')[:-3])
# ip address is either an ipv4 or ipv6
ip = ip.v4 if ip.v4 else ip.v6
url = self._url.format(host, domain, ip, password)
html = get_response(log, url)
tree = ET.ElementTree(ET.fromstring(html))
resp = self._etree_to_dict(tree)
if resp['errors']['text'] is not None:
raise ServiceError("Update error, got: " + resp['errors']['text'])
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