More HTTP status code fixes.
[oddments/ddns.git] / src / ddns / providers.py
index b7ddee4..8576c9b 100644 (file)
 #                                                                             #
 ###############################################################################
 
+import logging
+
+from i18n import _
+
 # Import all possible exception types.
 from .errors import *
 
+logger = logging.getLogger("ddns.providers")
+logger.propagate = 1
+
 class DDNSProvider(object):
        INFO = {
                # A short string that uniquely identifies
@@ -104,12 +111,41 @@ class DDNSProvider(object):
                """
                return self.get("password")
 
-       def __call__(self):
+       @property
+       def protocols(self):
+               return self.INFO.get("protocols")
+
+       def __call__(self, force=False):
+               if force:
+                       logger.info(_("Updating %s forced") % self.hostname)
+
+               # Check if we actually need to update this host.
+               elif self.is_uptodate(self.protocols):
+                       logger.info(_("%s is already up to date") % self.hostname)
+                       return
+
+               # Execute the update.
                self.update()
 
        def update(self):
                raise NotImplementedError
 
+       def is_uptodate(self, protos):
+               """
+                       Returns True if this host is already up to date
+                       and does not need to change the IP address on the
+                       name server.
+               """
+               for proto in protos:
+                       addresses = self.core.system.resolve(self.hostname, proto)
+
+                       current_address = self.get_address(proto)
+
+                       if not current_address in addresses:
+                               return False
+
+               return True
+
        def send_request(self, *args, **kwargs):
                """
                        Proxy connection to the send request
@@ -159,7 +195,7 @@ class DDNSProviderDHS(DDNSProvider):
                        return
 
                # Handle error codes.
-               elif response.code == "401":
+               elif response.code == 401:
                        raise DDNSAuthenticationError
 
                # If we got here, some other update error happened.
@@ -274,16 +310,16 @@ class DDNSProviderLightningWireLabs(DDNSProvider):
                        raise DDNSConfigurationError
 
                # Send update to the server.
-               response = self.send_request(url, data=data)
+               response = self.send_request(self.url, data=data)
 
                # Handle success messages.
                if response.code == 200:
                        return
 
                # Handle error codes.
-               if response.code == "403":
+               if response.code == 403:
                        raise DDNSAuthenticationError
-               elif response.code == "400":
+               elif response.code == 400:
                        raise DDNSRequestError
 
                # If we got here, some other update error happened.