updated force command, texts, error handling of requests and http code,

updated readme.

.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+encoding//src/gandi_live_dns.py=utf-8

README.md

@@ -6,12 +6,12 @@ This is a simple dynamic DNS updater for the
 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 and tested on Debian 8 Jessie GNU/Linux using Python 2.7.
+It has been developed on Debian 8 Jessie and tested on Debian 9 Sretch GNU/Linux using Python 2.7.
 
 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.  
 
-### Walkthrough
+### Goal
 
 You want your homeserver to be always available at `dynamic.mydomain.tld`.
 
@@ -20,32 +20,84 @@ First, you must apply for an API key with Gandi. Visit
 https://account.gandi.net/en/ and apply for (at least) the production API 
 key by following their directions.
 
-#### A Record Setup
+#### A DNS Record 
 Create the DNS A Records in the GANDI Webinterface which you want to update if your IP changes. 
 
+### Debian Package Requirements
+
+`apt-get update && apt-get upgrade && apt-get install unzip python-requests python-args python-simplejson`
+
 #### Git Clone or Download the Script
-Download the Script from [GitHub](https://github.com/cavebeat/gandi_live_dns/archive/master.zip) 
+Download the Script from [GitHub](https://github.com/cavebeat/gandi_live_dns/archive/master.zip) and unzip it.  
+
 or
+
 `git clone https://github.com/cavebeat/gandi_live_dns.git` 
 
 #### Script Configuration
 Then you'd need to configure the script in the src directory.
+Copy `example.config.py` to `config.py`, and put it in the same directory as the script.
 
-Copy `example.config.py` to `config.py`, and put it in the same directory
-   as the script.
+Edit the config file to fit your needs. 
+
+##### api_secret
+Start by retrieving your API Key from the "Security" section in new [Gandi Account admin panel](https://account.gandi.net/) to be able to make authenticated requests to the API.
+api_secret = '---my_secret_API_KEY----'
+
+##### api_endpoint
+Gandiv5 LiveDNS API Location
+http://doc.livedns.gandi.net/#api-endpoint
+'''
+api_endpoint = 'https://dns.beta.gandi.net/api/v5'
+
+##### domain
+Your domain with the subdomains to be updated 
+domain = 'mydomain.tld'
+
+##### subdomains
+All subdomains which should be updated. They get created if they do not yet exist. 
+subdomains = ["subdomain1", "subdomain2", "subdomain3"]
+
+The first domain is used to find out the actual IP in the Zone Records. 
 
 #### Run the script
+And run the script:
+`
+root@dyndns:~/gandi_live_dns-master/src# ./gandi_live_dns.py   
+Checking dynamic IP:  127.0.0.1
+Checking IP from DNS Record subdomain1:  127.0.0.1
+IP Address Match - no further action
+`
+
+If your IP has changed, it will be detected and the update will be triggered. 
 
-Make the script executeable. 
 
 `
-$ cd gandi_live_dns/src
-$ chmod +x gandi_live_dns.py
+root@dyndns:~/gandi_live_dns-master/src# ./gandi_live_dns.py
+Checking dynamic IP:  127.0.0.2
+Checking IP from DNS Record subdomain1:  127.0.0.1
+IP Address Mismatch - going to update the DNS Records for the subdomains with new IP 127.0.0.2
+Status Code: 201 , DNS Record Created , IP updated for subdomain1
+Status Code: 201 , DNS Record Created , IP updated for subdomain2
+Status Code: 201 , DNS Record Created , IP updated for subdomain3
 `
-And run the script
+
+#### Command Line Arguments
+
 `
-$ ./gandi_live_dns.py 
+root@dyndns:~/gandi_live_dns-master/src# ./gandi_live_dns.py -h
+usage: gandi_live_dns.py [-h] [-f]
+
+optional arguments:
+  -h, --help     show this help message and exit
+  -f, --force    force an update/create
+
 `
 
+The force option runs the script, even when no IP change has been detected. 
+It will update all subdomains and even create them if they are missing in the 
+Zone File/Zone UUID. This can be used if additional/new subdomains get appended to the conig file.  
+
+
 This DynDNS updater is inspired by https://github.com/jasontbradshaw/gandi-dyndns which worked very well 
-with the classic DNS from Gandiv4 Website and their XML-RPC API. 
+with the classic DNS from Gandiv4 Website and their XML-RPC API. 

src/example.config.py

@@ -18,7 +18,7 @@ Gandiv5 LiveDNS API Location
 http://doc.livedns.gandi.net/#api-endpoint
 https://dns.beta.gandi.net/api/v5/
 '''
-api = 'https://dns.beta.gandi.net/api/v5'
+api_endpoint = 'https://dns.beta.gandi.net/api/v5'
 
 #your domain with the subdomains in the zone file/UUID 
 domain = 'mydomain.tld'

src/gandi_live_dns.py

@@ -32,23 +32,36 @@ def get_uuid():
     GET /domains/<DOMAIN>:
         
     '''
-    url = config.api + '/domains/' + config.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)
-    return json_object['zone_uuid']
+    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']
+        exit()
 
 def get_dnsip(uuid):
     ''' 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>:
+    
+    The first subdomain from config.subdomain will be used to get   
+    the actual DNS Record IP
     '''
 
-    url = config.api + '/zones/' + uuid + '/records/' + config.subdomains[0] + '/A'
+    url = config.api_endpoint+ '/zones/' + uuid + '/records/' + config.subdomains[0] + '/A'
     headers = {"X-Api-Key":config.api_secret}
     u = requests.get(url, headers=headers)
-    json_object = json.loads(u._content)
-    print 'Checking IP from DNS Record' , config.subdomains[0], ' : ', json_object['rrset_values'][0].encode('ascii','ignore').strip('\n')
-    return json_object['rrset_values'][0].encode('ascii','ignore').strip('\n')
+    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').strip('\n')
+        return json_object['rrset_values'][0].encode('ascii','ignore').strip('\n')
+    else:
+        print 'Error: HTTP Status Code ', u.status_code, 'when trying to get IP from subdomain', config.subdomains[0]   
+        print  json_object['message']
+        exit()
 
 def update_records(uuid, dynIP, subdomain):
     ''' update DNS Records for Subdomains 
@@ -60,21 +73,26 @@ def update_records(uuid, dynIP, subdomain):
                          "rrset_values": ["<VALUE>"]}' \
                     https://dns.beta.gandi.net/api/v5/zones/<UUID>/records/<NAME>/<TYPE>
     '''
-    url = config.api + '/zones/' + uuid + '/records/' + subdomain + '/A'
+    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}
-    record_update = requests.put(url, data=json.dumps(payload), headers=headers)
-    json_object = json.loads(record_update._content)
-    print 'Status Code: ', record_update.status_code, ', ', json_object['message'], ', IP updated for', subdomain
-    return True
+    u = requests.put(url, data=json.dumps(payload), headers=headers)
+    json_object = json.loads(u._content)
+
+    if u.status_code == 201:
+        print '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  json_object['message']
+        exit()
+
 
 
 def main(force_update, verbosity):
 
-    if force_update:
-        print "force update turned on"
     if verbosity:
-        print "verbosity turned on"
+        print "verbosity turned on - not implemented by now"
 
         
     #get zone ID from Account
@@ -85,21 +103,21 @@ def main(force_update, verbosity):
     dnsIP = get_dnsip(uuid)
     
     if force_update:
-        print "Going to update the DNS Records for the subdomains"
+        print "Going to update/create the DNS Records for the subdomains"
         for sub in config.subdomains:
             update_records(uuid, dynIP, sub)
     else:
         if dynIP == dnsIP:
             print "IP Address Match - no further action"
         else:
-            print "IP Address Mismatch - going to update the DNS Records for the subdomains"
+            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)
 
 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", action="store_true")
+    parser.add_argument('-f', '--force', help="force an update/create", action="store_true")
     args = parser.parse_args()