return resp
except urllib2.HTTPError, e:
+ # Log response header.
+ logger.debug(_("Response header (Status Code %s):") % e.code)
+ for k, v in e.hdrs.items():
+ logger.debug(" %s: %s" % (k, v))
+
# 400 - Bad request
if e.code == 400:
raise DDNSRequestError(e.reason)
elif e.code in (401, 403):
raise DDNSAuthenticationError(e.reason)
+ # 404 - Not found
+ # Either the provider has changed the API, or
+ # there is an error on the server
+ elif e.code == 404:
+ raise DDNSNotFound(e.reason)
+
# 500 - Internal Server Error
elif e.code == 500:
raise DDNSInternalServerError(e.reason)
except urllib2.URLError, e:
if e.reason:
+ # Name or service not known
+ if e.reason.errno == -2:
+ raise DDNSResolveError
+
# Network Unreachable (e.g. no IPv6 access)
if e.reason.errno == 101:
raise DDNSNetworkUnreachableError
+
+ # Connection Refused
elif e.reason.errno == 111:
raise DDNSConnectionRefusedError
# Check if the external IP address should be guessed from
# a remote server.
guess_ip = self.core.settings.get("guess_external_ip", "true")
+ guess_ip = guess_ip in ("true", "yes", "1")
- # If the external IP address should be used, we just do
- # that.
- if guess_ip in ("true", "yes", "1"):
+ # If the external IP address should be used, we just do that.
+ if guess_ip:
return self.guess_external_ip_address(proto)
- # Get the local IP addresses.
- else:
- return self.get_local_ip_address(proto)
+ # Get the local IP address.
+ local_ip_address = self.get_local_ip_address(proto)
+
+ # If the local IP address is not usable, we must guess
+ # the correct IP address...
+ if not self._is_usable_ip_address(proto, local_ip_address):
+ local_ip_address = self.guess_external_ip_address(proto)
+
+ return local_ip_address
+
+ def _is_usable_ip_address(self, proto, address):
+ """
+ Returns True is the local IP address is usable
+ for dynamic DNS (i.e. is not a RFC1918 address or similar).
+ """
+ if proto == "ipv4":
+ # This is not the most perfect solution to match
+ # these addresses, but instead of pulling in an entire
+ # library to handle the IP addresses better, we match
+ # with regular expressions instead.
+ matches = (
+ # RFC1918 address space
+ r"^10\.\d+\.\d+\.\d+$",
+ r"^192\.168\.\d+\.\d+$",
+ r"^172\.(1[6-9]|2[0-9]|31)\.\d+\.\d+$",
+
+ # Dual Stack Lite address space
+ r"^100\.(6[4-9]|[7-9][0-9]|1[01][0-9]|12[0-7])\.\d+\.\d+$",
+ )
+
+ for match in matches:
+ m = re.match(match, address)
+ if m is None:
+ continue
+
+ # Found a match. IP address is not usable.
+ return False
+
+ # In all other cases, return OK.
+ return True
def resolve(self, hostname, proto=None):
addresses = []
if e.errno == -2:
return []
+ # Temporary failure in name resolution
+ elif e.errno == -3:
+ raise DDNSResolveError(hostname)
+
# No record for requested family available (e.g. no AAAA)
elif e.errno == -5:
return []