A simple Google Domains Dynamic DNS IP updater.

GoogleDomainsMgr_.idea_.name

GoogleDomainsMgr

GoogleDomainsMgr_.idea_dictionaries_robert.xml

<component name="ProjectDictionaryState">
  <dictionary name="robert">
    <words>
      <w>ipaddress</w>
    </words>
  </dictionary>
</component>

GoogleDomainsMgr_.idea_GoogleDomainsMgr.iml

<?xml version="1.0" encoding="UTF-8"?>
<module type="PYTHON_MODULE" version="4">
  <component name="NewModuleRootManager">
    <content url="file://$MODULE_DIR$" />
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
  </component>
</module>

GoogleDomainsMgr_.idea_misc.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="ProjectLevelVcsManager" settingsEditedManually="false">
    <OptionsSetting value="true" id="Add" />
    <OptionsSetting value="true" id="Remove" />
    <OptionsSetting value="true" id="Checkout" />
    <OptionsSetting value="true" id="Update" />
    <OptionsSetting value="true" id="Status" />
    <OptionsSetting value="true" id="Edit" />
    <ConfirmationsSetting value="0" id="Add" />
    <ConfirmationsSetting value="0" id="Remove" />
  </component>
  <component name="ProjectRootManager" version="2" project-jdk-name="Python 2.7.10 (C:\Python\2.7.10\python.exe)" project-jdk-type="Python SDK" />
</project>

GoogleDomainsMgr_.idea_modules.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="ProjectModuleManager">
    <modules>
      <module fileurl="file://$PROJECT_DIR$/.idea/GoogleDomainsMgr.iml" filepath="$PROJECT_DIR$/.idea/GoogleDomainsMgr.iml" />
    </modules>
  </component>
</project>

GoogleDomainsMgr_.idea_vcs.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="VcsDirectoryMappings">
    <mapping directory="" vcs="" />
  </component>
</project>

GoogleDomainsMgr_Main.py

__author__ = 'Robert P. aka zigzag32'
import requests
import time


def subdomainupdate(username, password, subdomain):
      # auto fetch
      ipaddress = requests.get('https://domains.google.com/checkip')
      # URL set up
      userpass = username + ':' + password
      domainip = subdomain + '&myip=' + ipaddress.content
      url = 'https://' + userpass + '@domains.google.com/nic/update?hostname=' + domainip
      # updating Sub Domain Info
      finish = requests.get(url)
      if 'nochg' in finish.content:
         print 'The supplied IP address is already set for this host. You should not attempt another update until your IP address changes.'
         updateip(finish.content)
      elif 'good' in finish.content:
         print 'The Ip address was updated successfully. You should not attempt another update until your IP address changes.'
      elif 'nohost' in finish.content:
         print 'The hostname does not exist, or does not have Dynamic DNS enabled.'
      elif 'badauth' in finish.content:
         print 'The username / password combination is not valid for the specified host.'
      elif 'notfqdn' in finish.content:
         print 'The supplied hostname is not a valid fully-qualified domain name.'
      elif 'abuse' in finish.content:
         print 'Dynamic DNS access for the hostname has been blocked due to failure to interpret previous responses correctly.'
      elif 'badagent' in finish.content:
         print 'Your Dynamic DNS client is making bad requests. Ensure the user agent is set in the request, and that you are only attempting to set an IPv4 address. IPv6 is not supported.'
      elif '911' in finish.content:
         print 'An error happened on our end. Wait 5 minutes and retry.'
         time.sleep(600)


def gdipupdate(username, password, subdomain, refreshtime):
   ipaddress = requests.get('https://domains.google.com/checkip')
   print 'updating ' + subdomain + ' every ' + str(round(refreshtime / 60)) + ' minutes'
   while True:
      subdomainupdate(username, password, subdomain)
      while ipcheck(ipaddress.content):
        time.sleep(refreshtime)


def ipcheck(ip):
    if ipadr == ip:
        print('The Ip Address has not changed, no action will be taken.')
        return True
    else:
        print('The Ip Address has changed, updating the Ip Address.')
        return False


def updateip(nch):
    ipstr = nch
    txt,ipm = ipstr.split(' ')
    global ipadr
    ipadr = ipm


gdipupdate('AAAAAAAAAAAAAA', 'BBBBBBBBBBBBBBB', 'test.zigzag32.com', 3600)