DynDNS support for ddns project.

[Stefan Schantl <stefan.schantl@ipfire.org>]

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Hello guys,

i've created a patch for the Dynamic DNS client for IPFire. 
(http://git.ipfire.org/?p=oddments/ddns.git;a=summary)

My patch will add support for the very popular "dyndns.org" provider. 
However I wasn't able to test my changes, because
I don't have any account there and I seems new members have to purchase 
to use use it.

So, I need your help to test my changes and finally be able to support 
that provider in the next major version of IPFire.

Best regards,

Stefan

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>From 02ddf51e320545da8b606a58c4a231a7cdf191da Mon Sep 17 00:00:00 2001
From: Stefan Schantl <stefan.schantl@ipfire.org>
Date: Sun, 9 Sep 2012 19:10:04 +0200
Subject: [PATCH] Add support for dyndns.org.

---
 ddns.conf         |  5 +++++
 ddns/__init__.py  |  1 +
 ddns/providers.py | 44 ++++++++++++++++++++++++++++++++++++++++++++
 3 Dateien ge��ndert, 50 Zeilen hinzugef��gt(+)

diff --git a/ddns.conf b/ddns.conf
index a40f567..3c34a9c 100644
--- a/ddns.conf
+++ b/ddns.conf
@@ -20,6 +20,11 @@
 # username = user
 # password = pass
 
+# [test.dyndns.org]
+# provider = dyndns.org
+# username = user
+# password = pass
+
 # [test.selfhost.de]
 # provider = selfhost.de
 # username = user
diff --git a/ddns/__init__.py b/ddns/__init__.py
index ee91a60..5733885 100644
--- a/ddns/__init__.py
+++ b/ddns/__init__.py
@@ -86,6 +86,7 @@ class DDNSCore(object):
 			Simply registers all providers.
 		"""
 		for provider in (
+			DDNSProviderDynDNS,
 			DDNSProviderNOIP,
 			DDNSProviderSelfhost,
 		):
diff --git a/ddns/providers.py b/ddns/providers.py
index f764001..d93b4d2 100644
--- a/ddns/providers.py
+++ b/ddns/providers.py
@@ -121,6 +121,50 @@ class DDNSProvider(object):
 		return self.core.system.get_address(proto)
 
 
+class DDNSProviderDynDNS(DDNSProvider):
+	INFO = {
+		"handle"    : "dyndns.org",
+		"name"      : "DynDNS",
+		"website"   : "http://www.dnydns.org",
+		"protocols" : ["ipv4",]
+	}
+
+	# Information about the format of the HTTP request is to be found
+	# http://dyn.com/support/developers/api/perform-update/
+	# http://dyn.com/support/developers/api/return-codes/
+
+	url = "http://%(username)s:%(password)s@members.dyndns.org/nic/update?hostname=%(hostname)s&myip=%(address)s&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG"
+
+	def __call__(self):
+		url = self.url % {
+			"hostname" : self.hostname,
+			"username" : self.username,
+			"password" : self.password,
+			"address"  : self.get_address("ipv4"),
+		}
+
+		# Send update to the server.
+		response = self.send_request(url)
+
+		# Get the full response message.
+		output = response.read()
+
+		# Handle success messages.
+		if output.startswith("good") or output.startswith("nochg"):
+			return
+
+		# Handle error codes.
+		if output == "badauth":
+			raise DDNSAuthenticationError
+		elif output == "aduse":
+			raise DDNSAbuseError
+		elif output == "911":
+			raise DDNSInternalServerError
+
+		# If we got here, some other update error happened.
+		raise DDNSUpdateError
+
+
 class DDNSProviderNOIP(DDNSProvider):
 	INFO = {
 		"handle"    : "no-ip.com",
-- 
1.7.11.4