Add IPv4/IPv6 lookup services

* Add option for the script to repeat itself
  after N seconds

* Add a Dockerfile so that this could be run
  inside docker

.gitignore

@@ -1,2 +1,134 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# Custom
+
 src/config.py
 src/config.pyc

.project

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>gandi_live_dns</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>org.python.pydev.PyDevBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.python.pydev.pythonNature</nature>
-	</natures>
-</projectDescription>

.pydevproject

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<?eclipse-pydev version="1.0"?><pydev_project>
-<pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">
-<path>/${PROJECT_DIR_NAME}/src</path>
-</pydev_pathproperty>
-<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.7</pydev_property>
-<pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
-</pydev_project>

Dockerfile

@@ -0,0 +1,13 @@
+FROM python:3.7-buster
+
+LABEL maintainer=david@dme.ninja
+LABEL version="0.1"
+
+# Copy scripts and requirements.txt
+COPY src/ /gandi-live-dns
+COPY requirements.txt /requirements.txt
+
+# Install script requirements.txt
+RUN pip install -r /requirements.txt
+
+CMD ["python", "/gandi-live-dns/gandi-live-dns.py", "-v", "-r", "3600"]

README.md

@@ -4,7 +4,9 @@ gandi-live-dns
 This is a simple dynamic DNS updater for the
 [Gandi](https://www.gandi.net) registrar. It uses their [LiveDNS REST API](http://doc.livedns.gandi.net/) to update the zone file for a subdomain of a domain to point at the external IPv4 address of the computer it has been run from.
 
-It has been developed on Debian 8 Jessie and tested on Debian 9 Stretch GNU/Linux using Python 2.7.
+~~It has been developed on Debian 8 Jessie and tested on Debian 9 Stretch GNU/Linux using Python 2.7.~~
+
+This has been update to work with Python 3 (Python 3.6 at Ubuntu 18.04). This will not work with Python 2 since it ~~will be deprecated in~~ is deprecated since 2020-01-01. 
 
 With the new v5 Website, Gandi has also launched a new REST API which makes it easier to communicate via bash/curl or python/requests.  
 
@@ -22,7 +24,10 @@ https://account.gandi.net/en/ and apply for (at least) the production API
 key by following their directions.
 
 #### A DNS Record 
-Create the DNS A Records in the GANDI Webinterface which you want to update if your IP changes. 
+Create the DNS A Records in the GANDI Webinterface which you want to update if your IPv4 changes. 
+
+#### AAAA DNS Record (only needed if ipv6 is in use)
+Create the DNS AAAA Records for ipv6 in the GANDI Webinterface which you want to update if your IPv6 changes. 
 
 #### Git Clone or Download the Script
 Download the Script from here as [zip](https://github.com/cavebeat/gandi-live-dns/archive/master.zip)/[tar.gz](https://github.com/cavebeat/gandi-live-dns/archive/master.tar.gz) and extract it.  
@@ -56,10 +61,16 @@ Your domain for the subdomains to be updated
 ##### subdomains
 All subdomains which should be updated. They get created if they do not yet exist.
 
+* `subdomains` for ipv4
+* `subdomains6` for ipv6
+
 ``` 
 subdomains = ["subdomain1", "subdomain2", "subdomain3"]
+subdomains6 = ["subdomain1v6", "subdomain2v6", "subdomain3v6"]
 ```
+
 The first subdomain is used to find out the actual IP in the Zone Records.
+If the returnded ip from is ipv6, it will use the first from subdomains6.
 
 #### Run the script
 And run the script:
@@ -88,12 +99,14 @@ Status Code: 201 , DNS Record Created , IP updated for subdomain3
 
 ```
 root@dyndns:~/gandi-live-dns-master/src# ./gandi-live-dns.py -h
-usage: gandi-live-dns.py [-h] [-f]
+usage: gandi-live-dns.py [-h] [-f] [-v] [-r]
 
 optional arguments:
   -h, --help            show this help message and exit
+  -v, --verbose         increase output verbosity
   -f, --force           force an update/create
-
+  -r REPEAT, --repeat REPEAT
+                        keep running and repeat every N seconds
 ```
 
 The force option runs the script, even when no IP change has been detected. 
@@ -124,12 +137,17 @@ Run the script every five minutes.
 ```
 */5 * * * * /root/gandi-live-dns-master/src/gandi-live-dns.py >/dev/null 2>&1 
 ```
+
+### Run with Docker
+
+Use the docker file to build the image. With docker, the script will run every 3600 seconds. (This value can be changed in the Dockerfile.
+
 ### Limitations
 The XML-RPC API has a limit of 30 requests per 2 seconds, so i guess it's safe to update 25 subdomains at once with the REST API. 
 
 
 ### Upcoming Features
-* command line Argument for verbose mode
+* ~~command line Argument for verbose mode~~ Aditional verbosity implemented.
 
 ### Inspiration   
 

requirements.txt

@@ -0,0 +1 @@
+requests

src/example.config.py

@@ -20,12 +20,22 @@ https://dns.api.gandi.net/api/v5/
 '''
 api_endpoint = 'https://dns.api.gandi.net/api/v5'
 
+#your domain with the subdomains in the zone file/UUID 
+domain = 'mydomain.tld'
+
+#enter all subdomains to be updated, subdomains must already exist to be updated
 #your domain and subdomains to be updated, subdomains must already exist to be updated
 dnsentries = {
-    "mydomain.tld": ["subdomain1", "subdomain2"],
-    "myotherdomain.tld": ["subdomain3"],
+    "mydomain.tld": {
+        "ipv4": ["subdomain1", "subdomain2"],
+        "ipv6": ["subdomain3v6"],
+        },
+    "myotherdomain.tld": {
+        "ipv4": ["subdomain4"],
+        },
 }
 
+
 #300 seconds = 5 minutes
 ttl = '300'
 
@@ -36,10 +46,15 @@ run your own external IP provider:
 + <?php $ip = $_SERVER['REMOTE_ADDR']; ?>
   <?php print $ip; ?>
 e.g. 
-+ https://ifconfig.co
++ https://api[4|6].ipify.org
++ https://ifconfig.co/ip
 + http://ifconfig.me/ip
 + http://whatismyip.akamai.com/
 + http://ipinfo.io/ip
 + many more ...
 '''
 ifconfig = 'choose_from_above_or_run_your_own'
+ifconfig = {
+    "ipv4": 'choose_from_above_or_run_your_own_ipv4_lookup_service',
+    "ipv6": 'choose_from_above_or_run_your_own_ipv6_lookup_service',
+}

src/gandi-live-dns.py

@@ -1,48 +1,61 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # encoding: utf-8
 '''
 Gandi v5 LiveDNS - DynDNS Update via REST API and CURL/requests
 
 @author: cave
+@author: dvdme
 License GPLv3
 https://www.gnu.org/licenses/gpl-3.0.html
 
 Created on 13 Aug 2017
+Forked on 08 Dec 2019
 http://doc.livedns.gandi.net/
 http://doc.livedns.gandi.net/#api-endpoint -> https://dns.gandi.net/api/v5/
 '''
 
-import requests, json
+import json
+import requests
+import ipaddress
 import config
 import argparse
+import threading as th
+from pprint import pprint
 
 
-def get_dynip(ifconfig_provider):
+def check_is_ipv6(ip_address, verbose=False):
+    return ipaddress.ip_address(ip_address).version == 6
+
+
+def get_dynip(ifconfig_provider, verbose=False):
     ''' find out own IPv4 at home <-- this is the dynamic IP which changes more or less frequently
     similar to curl ifconfig.me/ip, see example.config.py for details to ifconfig providers 
     '''
+    if verbose:
+        print(f'Using {ifconfig_provider}')
     r = requests.get(ifconfig_provider)
-    print('Checking dynamic IP: ' , r.text.strip('\n'))
-    return r.text.strip('\n')
+    print (f'Checking dynamic IP: {r.text.strip()}')
+    return r.text.strip()
 
-def get_uuid():
+def get_uuid(verbose=False):
     '''
     find out ZONE UUID from domain
     Info on domain "DOMAIN"
     GET /domains/<DOMAIN>:
-        
     '''
     url = config.api_endpoint + '/domains/' + config.domain
     u = requests.get(url, headers={"X-Api-Key":config.api_secret})
-    json_object = json.loads(u._content)
+    json_object = u.json()
+    if verbose:
+        pprint(json_object)
     if u.status_code == 200:
         return json_object['zone_uuid']
     else:
-        print('Error: HTTP Status Code ', u.status_code, 'when trying to get Zone UUID')
-        print(json_object['message'])
+        print(f'Error: HTTP Status Code {u.status_code} when trying to get Zone UUID')
+        pprint(u.json())
         exit()
 
-def get_dnsip(uuid):
+def get_dnsip(uuid, is_ipv6=False, verbose=False):
     ''' find out IP from first Subdomain DNS-Record
     List all records with name "NAME" and type "TYPE" in the zone UUID
     GET /zones/<UUID>/records/<NAME>/<TYPE>:
@@ -50,20 +63,28 @@ def get_dnsip(uuid):
     The first subdomain from config.subdomain will be used to get
     the actual DNS Record IP
     '''
+    if is_ipv6:
+        record_type = '/AAAA'
+    else:
+       record_type = '/A'
 
-    url = config.api_endpoint+ '/zones/' + uuid + '/records/' + config.subdomains[0] + '/A'
-    headers = {"X-Api-Key":config.api_secret}
+    subdomain = config.subdomains[0]
+    url = config.api_endpoint+ '/zones/' + uuid + '/records/' + subdomain + record_type
+    headers = {'X-Api-Key':config.api_secret}
     u = requests.get(url, headers=headers)
     if u.status_code == 200:
-        json_object = json.loads(u._content)
-        print('Checking IP from DNS Record' , config.subdomains[0], ':', json_object['rrset_values'][0].encode('ascii','ignore').decode().strip('\n'))
-        return json_object['rrset_values'][0].encode('ascii','ignore').decode().strip('\n')
+        json_object = u.json()
+        if verbose:
+            pprint(json_object)
+        dnsip = json_object['rrset_values'][0].strip()
+        print (f'Checking IP from DNS Record {subdomain}: {dnsip}')
+        return dnsip
     else:
-        print('Error: HTTP Status Code ', u.status_code, 'when trying to get IP from subdomain', config.subdomains[0])
-        print (json_object['message'])
+        print('Error: HTTP Status Code ', u.status_code, 'when trying to get IP from subdomain', subdomain)
+        pprint(u.json())
         exit()
 
-def update_records(uuid, dynIP, subdomain):
+def update_records(uuid, dynIP, subdomain, is_ipv6=False, verbose=False):
     ''' update DNS Records for Subdomains
         Change the "NAME"/"TYPE" record from the zone UUID
         PUT /zones/<UUID>/records/<NAME>/<TYPE>:
@@ -73,54 +94,83 @@ def update_records(uuid, dynIP, subdomain):
                          "rrset_values": ["<VALUE>"]}' \
                     https://dns.gandi.net/api/v5/zones/<UUID>/records/<NAME>/<TYPE>
     '''
-    url = config.api_endpoint+ '/zones/' + uuid + '/records/' + subdomain + '/A'
-    payload = {"rrset_ttl": config.ttl, "rrset_values": [dynIP]}
-    headers = {"Content-Type": "application/json", "X-Api-Key":config.api_secret}
+    if is_ipv6:
+        record_type = '/AAAA'
+    else:
+       record_type = '/A'
+    url = config.api_endpoint+ '/zones/' + uuid + '/records/' + subdomain + record_type
+    payload = {'rrset_ttl': config.ttl, "rrset_values": [dynIP]}
+    headers = {'Content-Type': 'application/json', 'X-Api-Key':config.api_secret}
     u = requests.put(url, data=json.dumps(payload), headers=headers)
-    json_object = json.loads(u._content)
-
+    json_object = u.json()
     if u.status_code == 201:
-        print('Status Code:', u.status_code, ',', json_object['message'], ', IP updated for', subdomain)
+        print (f'Status Code: {u.status_code}, {json_object["message"]}, IP updated for {subdomain}')
         return True
     else:
-        print('Error: HTTP Status Code ', u.status_code, 'when trying to update IP from subdomain', subdomain)
+        print (f'Error: HTTP Status Code {u.status_code} when trying to update IP from subdomain {subdomain}')
         print (json_object['message'])
         exit()
 
 
 
-def main(force_update, verbosity):
+def main(force_update, verbosity, repeat):
 
     if verbosity:
-        print("verbosity turned on - not implemented by now")
+        print('verbosity turned on')
+        verbose = True
+    else:
+        verbose =False
 
-    for key, value in config.dnsentries.items():
-        config.domain = key
+    if repeat and verbose:
+        print(f'repeat turned on, will repeat every {repeat} seconds')
+
+    for domain, content in config.dnsentries.items():
+        config.domain = domain
+        for key, value in content.items():
+            afi = key
             config.subdomains = value
 
             #get zone ID from Account
             uuid = get_uuid()
 
             #compare dynIP and DNS IP
-        dynIP = get_dynip(config.ifconfig)
-        dnsIP = get_dnsip(uuid)
+            dynIP = get_dynip(config.ifconfig[afi], verbose)
+
+            if check_is_ipv6(dynIP, verbose):
+                is_ipv6 = True
+                print('Detected ipv6')
+            else:
+                print('Detected ipv4')
+                is_ipv6 = False
+
+            dnsIP = get_dnsip(uuid, is_ipv6, verbose)
+
+            subdomains = config.subdomains
 
             if force_update:
-            print("Going to update/create the DNS Records for the subdomains")
-            for sub in config.subdomains:
-                update_records(uuid, dynIP, sub)
+                print ('Going to update/create the DNS Records for the subdomains')
+                for sub in subdomains:
+                    update_records(uuid, dynIP, sub, is_ipv6, verbose)
             else:
+                if verbose:
+                    print(f'dynIP: {dynIP}')
+                    print(f'dnsIP: {dnsIP}')
                 if dynIP == dnsIP:
-                print("IP Address Match - no further action")
+                    print ('IP Address Match - no further action')
                 else:
-                print("IP Address Mismatch - going to update the DNS Records for the subdomains with new IP", dynIP)
-                for sub in config.subdomains:
-                    update_records(uuid, dynIP, sub)
+                    print (f'IP Address Mismatch - going to update the DNS Records for the subdomains with new IP {dynIP}')
+                    for sub in subdomains:
+                        update_records(uuid, dynIP, sub, is_ipv6, verbose)
+    if repeat:
+        if verbosity:
+            print(f'Repeating in {repeat} seconds')
+        th.Timer(repeat, main, [force_update, verbosity, repeat]).start()
 
-if __name__ == "__main__":
+
+if __name__ == '__main__':
     parser = argparse.ArgumentParser()
-    parser.add_argument('-v', '--verbose', help="increase output verbosity", action="store_true")
-    parser.add_argument('-f', '--force', help="force an update/create", action="store_true")
+    parser.add_argument('-v', '--verbose', help='increase output verbosity', action='store_true')
+    parser.add_argument('-f', '--force', help='force an update/create', action='store_true')
+    parser.add_argument('-r', '--repeat', type=int, help='keep running and repeat every N seconds')
     args = parser.parse_args()
-
-    main(args.force, args.verbose)
+    main(args.force, args.verbose, args.repeat)