💾 Archived View for ait.place › nix › extra › godaddy_ddns.py captured on 2023-01-29 at 03:20:26.
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#!/usr/bin/env python3
#
# Update GoDaddy DNS "A" Record.
#
# usage: godaddy_ddns.py [-h] [--version] [--ip IP] [--key KEY]
# [--secret SECRET] [--ttl TTL] [--force]
# hostname
#
# positional arguments:
# hostname DNS fully-qualified host name with an 'A' record. If the hostname consists of only a domain name
# (i.e., it contains only one period), the record for '@' is updated.
#
# optional arguments:
# -h, --help show this help message and exit
# --version show program's version number and exit
# --ip IP DNS Address (defaults to public WAN address from https://checkip.amazonaws.com/)
# --key KEY GoDaddy production key
# --secret SECRET GoDaddy production secret
# --ttl TTL DNS TTL.
# --force force update of GoDaddy DNS record even if DNS query indicates that record is already correct
#
# GoDaddy customers can obtain values for the KEY and SECRET arguments by creating a production key at
# https://developer.godaddy.com/keys/.
#
# Note that command line arguments may be specified in a FILE, one to a line, by instead giving
# the argument "%FILE". For security reasons, it is particularly recommended to supply the
# KEY and SECRET arguments in such a file, rather than directly on the command line:
#
# Create a file named, e.g., `godaddy-ddns.config` with the content:
# MY.FULLY.QUALIFIED.HOSTNAME.COM
# --key
# MY-KEY-FROM-GODADDY
# --secret
# MY-SECRET-FROM-GODADDY
#
# Then just invoke `godaddy-ddns %godaddy-ddns.config`
prog='godaddy-ddns'
version='0.4'
author='Carl Edman (CarlEdman@gmail.com)'
import sys, json, argparse, socket
if sys.version_info > (3,):
from urllib.request import urlopen, Request
from urllib.error import URLError, HTTPError
else:
from urllib2 import urlopen, Request
from urllib2 import URLError, HTTPError
parser = argparse.ArgumentParser(description='Update GoDaddy DNS "A" Record.', fromfile_prefix_chars='%', epilog= \
'''GoDaddy customers can obtain values for the KEY and SECRET arguments by creating a production key at
https://developer.godaddy.com/keys/.
Note that command line arguments may be specified in a FILE, one to a line, by instead giving
the argument "%FILE". For security reasons, it is particularly recommended to supply the
KEY and SECRET arguments in such a file, rather than directly on the command line.''')
parser.add_argument('--version', action='version',
version='{} {}'.format(prog, version))
parser.add_argument('hostname', type=str,
help='DNS fully-qualified host name with an A record. If the hostname consists of only a domain name (i.e., it contains only one period), the record for @ is updated.')
parser.add_argument('--ip', type=str, default=None,
help='IPv4 address to write to DNS record (defaults to public WAN address from https://checkip.amazonaws.com/)')
parser.add_argument('--key', type=str, default='',
help='GoDaddy production key')
parser.add_argument('--secret', type=str, default='',
help='GoDaddy production secret')
parser.add_argument('--ttl', type=int, default=3600,
help='DNS TTL.')
parser.add_argument('--force', type=bool, default=False,
help='force update of GoDaddy DNS record even if DNS query indicates that record is already correct.')
args = parser.parse_args()
def main():
hostnames = args.hostname.split('.')
if len(hostnames)<2:
msg = 'Hostname "{}" is not a fully-qualified host name of form "HOST.DOMAIN.TOP".'.format(args.hostname)
raise Exception(msg)
elif len(hostnames)<3:
hostnames.insert(0,'@')
if not args.ip:
try:
with urlopen(Request("https://checkip.amazonaws.com/", headers={'User-Agent': 'Mozilla'})) as f: resp=f.read()
if sys.version_info > (3,): resp = resp.decode('utf-8')
args.ip = resp.strip()
except URLError:
msg = 'Unable to automatically obtain IP address from https://checkip.amazonaws.com/.'
raise Exception(msg)
ipslist = args.ip.split(",")
for ipsiter in ipslist:
ips = ipsiter.split('.')
if len(ips)!=4 or \
not ips[0].isdigit() or not ips[1].isdigit() or not ips[2].isdigit() or not ips[3].isdigit() or \
int(ips[0])>255 or int(ips[1])>255 or int(ips[2])>255 or int(ips[3])>255:
msg = '"{}" is not valid IP address.'.format(ips)
raise Exception(msg)
if not args.force and len(ipslist)==1:
try:
dnsaddr = socket.gethostbyname(args.hostname)
if ipslist[0] == dnsaddr:
msg = '{} already has IP address {}.'.format(args.hostname, dnsaddr)
raise Exception(msg)
except:
pass
url = 'https://api.godaddy.com/v1/domains/{}/records/A/{}'.format('.'.join(hostnames[1:]),hostnames[0])
data = json.dumps([ { "data": ip, "ttl": args.ttl, "name": hostnames[0], "type": "A" } for ip in ipslist])
if sys.version_info > (3,): data = data.encode('utf-8')
req = Request(url, method='PUT', data=data)
req.add_header("Content-Type","application/json")
req.add_header("Accept","application/json")
if args.key and args.secret:
req.add_header("Authorization", "sso-key {}:{}".format(args.key,args.secret))
try:
with urlopen(req) as f: resp = f.read()
if sys.version_info > (3,): resp = resp.decode('utf-8')
# resp = json.loads(resp)
except HTTPError as e:
if e.code==400:
msg = 'Unable to set IP address: GoDaddy API URL ({}) was malformed.'.format(req.full_url)
elif e.code==401:
if args.key and args.secret:
msg = '''Unable to set IP address: --key or --secret option incorrect.
Correct values can be obtained from from https://developer.godaddy.com/keys/ and are ideally placed in a % file.'''
else:
msg = '''Unable to set IP address: --key or --secret option missing.
Correct values can be obtained from from https://developer.godaddy.com/keys/ and are ideally placed in a % file.'''
elif e.code==403:
msg = '''Unable to set IP address: customer identified by --key and --secret options denied permission.
Correct values can be obtained from from https://developer.godaddy.com/keys/ and are ideally placed in a % file.'''
elif e.code==404:
msg = 'Unable to set IP address: {} not found at GoDaddy.'.format(args.hostname)
elif e.code==422:
msg = 'Unable to set IP address: "{}" has invalid domain or lacks A record.'.format(args.hostname)
elif e.code==429:
msg = 'Unable to set IP address: too many requests to GoDaddy within brief period.'
elif e.code==503:
msg = 'Unable to set IP address: "{}" is unavailable.'.format(args.hostname)
else:
msg = 'Unable to set IP address: GoDaddy API failure because "{}".'.format(e.reason)
raise Exception(msg)
except URLError as e:
msg = 'Unable to set IP address: GoDaddy API failure because "{}".'.format(e.reason)
raise Exception(msg)
print('IP address for {} set to {}.'.format(args.hostname,args.ip))
if __name__ == '__main__':
main()