src/ddns/providers.py

   1 #!/usr/bin/python
   2 ###############################################################################
   3 #                                                                             #
   4 # ddns - A dynamic DNS client for IPFire                                      #
   5 # Copyright (C) 2012 IPFire development team                                  #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 import logging
  23 import subprocess
  24 import urllib2
  25 import xml.dom.minidom
  26
  27 from i18n import _
  28
  29 # Import all possible exception types.
  30 from .errors import *
  31
  32 logger = logging.getLogger("ddns.providers")
  33 logger.propagate = 1
  34
  35 _providers = {}
  36
  37 def get():
  38         """
  39                 Returns a dict with all automatically registered providers.
  40         """
  41         return _providers.copy()
  42
  43 class DDNSProvider(object):
  44         # A short string that uniquely identifies
  45         # this provider.
  46         handle = None
  47
  48         # The full name of the provider.
  49         name = None
  50
  51         # A weburl to the homepage of the provider.
  52         # (Where to register a new account?)
  53         website = None
  54
  55         # A list of supported protocols.
  56         protocols = ("ipv6", "ipv4")
  57
  58         DEFAULT_SETTINGS = {}
  59
  60         # Automatically register all providers.
  61         class __metaclass__(type):
  62                 def __init__(provider, name, bases, dict):
  63                         type.__init__(provider, name, bases, dict)
  64
  65                         # The main class from which is inherited is not registered
  66                         # as a provider.
  67                         if name == "DDNSProvider":
  68                                 return
  69
  70                         if not all((provider.handle, provider.name, provider.website)):
  71                                 raise DDNSError(_("Provider is not properly configured"))
  72
  73                         assert not _providers.has_key(provider.handle), \
  74                                 "Provider '%s' has already been registered" % provider.handle
  75
  76                         _providers[provider.handle] = provider
  77
  78         def __init__(self, core, **settings):
  79                 self.core = core
  80
  81                 # Copy a set of default settings and
  82                 # update them by those from the configuration file.
  83                 self.settings = self.DEFAULT_SETTINGS.copy()
  84                 self.settings.update(settings)
  85
  86         def __repr__(self):
  87                 return "<DDNS Provider %s (%s)>" % (self.name, self.handle)
  88
  89         def __cmp__(self, other):
  90                 return cmp(self.hostname, other.hostname)
  91
  92         def get(self, key, default=None):
  93                 """
  94                         Get a setting from the settings dictionary.
  95                 """
  96                 return self.settings.get(key, default)
  97
  98         @property
  99         def hostname(self):
 100                 """
 101                         Fast access to the hostname.
 102                 """
 103                 return self.get("hostname")
 104
 105         @property
 106         def username(self):
 107                 """
 108                         Fast access to the username.
 109                 """
 110                 return self.get("username")
 111
 112         @property
 113         def password(self):
 114                 """
 115                         Fast access to the password.
 116                 """
 117                 return self.get("password")
 118
 119         @property
 120         def token(self):
 121                 """
 122                         Fast access to the token.
 123                 """
 124                 return self.get("token")
 125
 126         def __call__(self, force=False):
 127                 if force:
 128                         logger.debug(_("Updating %s forced") % self.hostname)
 129
 130                 # Check if we actually need to update this host.
 131                 elif self.is_uptodate(self.protocols):
 132                         logger.debug(_("%s is already up to date") % self.hostname)
 133                         return
 134
 135                 # Execute the update.
 136                 self.update()
 137
 138         def update(self):
 139                 raise NotImplementedError
 140
 141         def is_uptodate(self, protos):
 142                 """
 143                         Returns True if this host is already up to date
 144                         and does not need to change the IP address on the
 145                         name server.
 146                 """
 147                 for proto in protos:
 148                         addresses = self.core.system.resolve(self.hostname, proto)
 149
 150                         current_address = self.get_address(proto)
 151
 152                         # If no addresses for the given protocol exist, we
 153                         # are fine...
 154                         if current_address is None and not addresses:
 155                                 continue
 156
 157                         if not current_address in addresses:
 158                                 return False
 159
 160                 return True
 161
 162         def send_request(self, *args, **kwargs):
 163                 """
 164                         Proxy connection to the send request
 165                         method.
 166                 """
 167                 return self.core.system.send_request(*args, **kwargs)
 168
 169         def get_address(self, proto, default=None):
 170                 """
 171                         Proxy method to get the current IP address.
 172                 """
 173                 return self.core.system.get_address(proto) or default
 174
 175
 176 class DDNSProtocolDynDNS2(object):
 177         """
 178                 This is an abstract class that implements the DynDNS updater
 179                 protocol version 2. As this is a popular way to update dynamic
 180                 DNS records, this class is supposed make the provider classes
 181                 shorter and simpler.
 182         """
 183
 184         # Information about the format of the request is to be found
 185         # http://dyn.com/support/developers/api/perform-update/
 186         # http://dyn.com/support/developers/api/return-codes/
 187
 188         def _prepare_request_data(self):
 189                 data = {
 190                         "hostname" : self.hostname,
 191                         "myip"     : self.get_address("ipv4"),
 192                 }
 193
 194                 return data
 195
 196         def update(self):
 197                 data = self._prepare_request_data()
 198
 199                 # Send update to the server.
 200                 response = self.send_request(self.url, data=data,
 201                         username=self.username, password=self.password)
 202
 203                 # Get the full response message.
 204                 output = response.read()
 205
 206                 # Handle success messages.
 207                 if output.startswith("good") or output.startswith("nochg"):
 208                         return
 209
 210                 # Handle error codes.
 211                 if output == "badauth":
 212                         raise DDNSAuthenticationError
 213                 elif output == "aduse":
 214                         raise DDNSAbuseError
 215                 elif output == "notfqdn":
 216                         raise DDNSRequestError(_("No valid FQDN was given."))
 217                 elif output == "nohost":
 218                         raise DDNSRequestError(_("Specified host does not exist."))
 219                 elif output == "911":
 220                         raise DDNSInternalServerError
 221                 elif output == "dnserr":
 222                         raise DDNSInternalServerError(_("DNS error encountered."))
 223
 224                 # If we got here, some other update error happened.
 225                 raise DDNSUpdateError(_("Server response: %s") % output)
 226
 227
 228 class DDNSResponseParserXML(object):
 229         """
 230                 This class provides a parser for XML responses which
 231                 will be sent by various providers. This class uses the python
 232                 shipped XML minidom module to walk through the XML tree and return
 233                 a requested element.
 234         """
 235
 236         def get_xml_tag_value(self, document, content):
 237                 # Send input to the parser.
 238                 xmldoc = xml.dom.minidom.parseString(document)
 239
 240                 # Get XML elements by the given content.
 241                 element = xmldoc.getElementsByTagName(content)
 242
 243                 # If no element has been found, we directly can return None.
 244                 if not element:
 245                         return None
 246
 247                 # Only get the first child from an element, even there are more than one.
 248                 firstchild = element[0].firstChild
 249
 250                 # Get the value of the child.
 251                 value = firstchild.nodeValue
 252
 253                 # Return the value.
 254                 return value
 255
 256
 257 class DDNSProviderAllInkl(DDNSProvider):
 258         handle    = "all-inkl.com"
 259         name      = "All-inkl.com"
 260         website   = "http://all-inkl.com/"
 261         protocols = ("ipv4",)
 262
 263         # There are only information provided by the vendor how to
 264         # perform an update on a FRITZ Box. Grab requried informations
 265         # from the net.
 266         # http://all-inkl.goetze.it/v01/ddns-mit-einfachen-mitteln/
 267
 268         url = "http://dyndns.kasserver.com"
 269
 270         def update(self):
 271                 # There is no additional data required so we directly can
 272                 # send our request.
 273                 response = self.send_request(self.url, username=self.username, password=self.password)
 274
 275                 # Get the full response message.
 276                 output = response.read()
 277
 278                 # Handle success messages.
 279                 if output.startswith("good") or output.startswith("nochg"):
 280                         return
 281
 282                 # If we got here, some other update error happened.
 283                 raise DDNSUpdateError
 284
 285
 286 class DDNSProviderBindNsupdate(DDNSProvider):
 287         handle  = "nsupdate"
 288         name    = "BIND nsupdate utility"
 289         website = "http://en.wikipedia.org/wiki/Nsupdate"
 290
 291         DEFAULT_TTL = 60
 292
 293         def update(self):
 294                 scriptlet = self.__make_scriptlet()
 295
 296                 # -v enables TCP hence we transfer keys and other data that may
 297                 # exceed the size of one packet.
 298                 # -t sets the timeout
 299                 command = ["nsupdate", "-v", "-t", "60"]
 300
 301                 p = subprocess.Popen(command, shell=True,
 302                         stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
 303                 )
 304                 stdout, stderr = p.communicate(scriptlet)
 305
 306                 if p.returncode == 0:
 307                         return
 308
 309                 raise DDNSError("nsupdate terminated with error code: %s\n  %s" % (p.returncode, stderr))
 310
 311         def __make_scriptlet(self):
 312                 scriptlet = []
 313
 314                 # Set a different server the update is sent to.
 315                 server = self.get("server", None)
 316                 if server:
 317                         scriptlet.append("server %s" % server)
 318
 319                 key = self.get("key", None)
 320                 if key:
 321                         secret = self.get("secret")
 322
 323                         scriptlet.append("key %s %s" % (key, secret))
 324
 325                 ttl = self.get("ttl", self.DEFAULT_TTL)
 326
 327                 # Perform an update for each supported protocol.
 328                 for rrtype, proto in (("AAAA", "ipv6"), ("A", "ipv4")):
 329                         address = self.get_address(proto)
 330                         if not address:
 331                                 continue
 332
 333                         scriptlet.append("update delete %s. %s" % (self.hostname, rrtype))
 334                         scriptlet.append("update add %s. %s %s %s" % \
 335                                 (self.hostname, ttl, rrtype, address))
 336
 337                 # Send the actions to the server.
 338                 scriptlet.append("send")
 339                 scriptlet.append("quit")
 340
 341                 logger.debug(_("Scriptlet:"))
 342                 for line in scriptlet:
 343                         # Masquerade the line with the secret key.
 344                         if line.startswith("key"):
 345                                 line = "key **** ****"
 346
 347                         logger.debug("  %s" % line)
 348
 349                 return "\n".join(scriptlet)
 350
 351
 352 class DDNSProviderDHS(DDNSProvider):
 353         handle    = "dhs.org"
 354         name      = "DHS International"
 355         website   = "http://dhs.org/"
 356         protocols = ("ipv4",)
 357
 358         # No information about the used update api provided on webpage,
 359         # grabed from source code of ez-ipudate.
 360
 361         url = "http://members.dhs.org/nic/hosts"
 362
 363         def update(self):
 364                 data = {
 365                         "domain"       : self.hostname,
 366                         "ip"           : self.get_address("ipv4"),
 367                         "hostcmd"      : "edit",
 368                         "hostcmdstage" : "2",
 369                         "type"         : "4",
 370                 }
 371
 372                 # Send update to the server.
 373                 response = self.send_request(self.url, username=self.username, password=self.password,
 374                         data=data)
 375
 376                 # Handle success messages.
 377                 if response.code == 200:
 378                         return
 379
 380                 # If we got here, some other update error happened.
 381                 raise DDNSUpdateError
 382
 383
 384 class DDNSProviderDNSpark(DDNSProvider):
 385         handle    = "dnspark.com"
 386         name      = "DNS Park"
 387         website   = "http://dnspark.com/"
 388         protocols = ("ipv4",)
 389
 390         # Informations to the used api can be found here:
 391         # https://dnspark.zendesk.com/entries/31229348-Dynamic-DNS-API-Documentation
 392
 393         url = "https://control.dnspark.com/api/dynamic/update.php"
 394
 395         def update(self):
 396                 data = {
 397                         "domain" : self.hostname,
 398                         "ip"     : self.get_address("ipv4"),
 399                 }
 400
 401                 # Send update to the server.
 402                 response = self.send_request(self.url, username=self.username, password=self.password,
 403                         data=data)
 404
 405                 # Get the full response message.
 406                 output = response.read()
 407
 408                 # Handle success messages.
 409                 if output.startswith("ok") or output.startswith("nochange"):
 410                         return
 411
 412                 # Handle error codes.
 413                 if output == "unauth":
 414                         raise DDNSAuthenticationError
 415                 elif output == "abuse":
 416                         raise DDNSAbuseError
 417                 elif output == "blocked":
 418                         raise DDNSBlockedError
 419                 elif output == "nofqdn":
 420                         raise DDNSRequestError(_("No valid FQDN was given."))
 421                 elif output == "nohost":
 422                         raise DDNSRequestError(_("Invalid hostname specified."))
 423                 elif output == "notdyn":
 424                         raise DDNSRequestError(_("Hostname not marked as a dynamic host."))
 425                 elif output == "invalid":
 426                         raise DDNSRequestError(_("Invalid IP address has been sent."))
 427
 428                 # If we got here, some other update error happened.
 429                 raise DDNSUpdateError
 430
 431
 432 class DDNSProviderDtDNS(DDNSProvider):
 433         handle    = "dtdns.com"
 434         name      = "DtDNS"
 435         website   = "http://dtdns.com/"
 436         protocols = ("ipv4",)
 437
 438         # Information about the format of the HTTPS request is to be found
 439         # http://www.dtdns.com/dtsite/updatespec
 440
 441         url = "https://www.dtdns.com/api/autodns.cfm"
 442
 443         def update(self):
 444                 data = {
 445                         "ip" : self.get_address("ipv4"),
 446                         "id" : self.hostname,
 447                         "pw" : self.password
 448                 }
 449
 450                 # Send update to the server.
 451                 response = self.send_request(self.url, data=data)
 452
 453                 # Get the full response message.
 454                 output = response.read()
 455
 456                 # Remove all leading and trailing whitespace.
 457                 output = output.strip()
 458
 459                 # Handle success messages.
 460                 if "now points to" in output:
 461                         return
 462
 463                 # Handle error codes.
 464                 if output == "No hostname to update was supplied.":
 465                         raise DDNSRequestError(_("No hostname specified."))
 466
 467                 elif output == "The hostname you supplied is not valid.":
 468                         raise DDNSRequestError(_("Invalid hostname specified."))
 469
 470                 elif output == "The password you supplied is not valid.":
 471                         raise DDNSAuthenticationError
 472
 473                 elif output == "Administration has disabled this account.":
 474                         raise DDNSRequestError(_("Account has been disabled."))
 475
 476                 elif output == "Illegal character in IP.":
 477                         raise DDNSRequestError(_("Invalid IP address has been sent."))
 478
 479                 elif output == "Too many failed requests.":
 480                         raise DDNSRequestError(_("Too many failed requests."))
 481
 482                 # If we got here, some other update error happened.
 483                 raise DDNSUpdateError
 484
 485
 486 class DDNSProviderDynDNS(DDNSProtocolDynDNS2, DDNSProvider):
 487         handle    = "dyndns.org"
 488         name      = "Dyn"
 489         website   = "http://dyn.com/dns/"
 490         protocols = ("ipv4",)
 491
 492         # Information about the format of the request is to be found
 493         # http://http://dyn.com/support/developers/api/perform-update/
 494         # http://dyn.com/support/developers/api/return-codes/
 495
 496         url = "https://members.dyndns.org/nic/update"
 497
 498
 499 class DDNSProviderDynU(DDNSProtocolDynDNS2, DDNSProvider):
 500         handle    = "dynu.com"
 501         name      = "Dynu"
 502         website   = "http://dynu.com/"
 503         protocols = ("ipv6", "ipv4",)
 504
 505         # Detailed information about the request and response codes
 506         # are available on the providers webpage.
 507         # http://dynu.com/Default.aspx?page=dnsapi
 508
 509         url = "https://api.dynu.com/nic/update"
 510
 511         def _prepare_request_data(self):
 512                 data = DDNSProviderDynDNS._prepare_request_data(self)
 513
 514                 # This one supports IPv6
 515                 data.update({
 516                         "myipv6"   : self.get_address("ipv6"),
 517                 })
 518
 519                 return data
 520
 521
 522 class DDNSProviderEasyDNS(DDNSProtocolDynDNS2, DDNSProvider):
 523         handle    = "easydns.com"
 524         name      = "EasyDNS"
 525         website   = "http://www.easydns.com/"
 526         protocols = ("ipv4",)
 527
 528         # There is only some basic documentation provided by the vendor,
 529         # also searching the web gain very poor results.
 530         # http://mediawiki.easydns.com/index.php/Dynamic_DNS
 531
 532         url = "http://api.cp.easydns.com/dyn/tomato.php"
 533
 534
 535 class DDNSProviderEnomCom(DDNSResponseParserXML, DDNSProvider):
 536         handle    = "enom.com"
 537         name      = "eNom Inc."
 538         website   = "http://www.enom.com/"
 539
 540         # There are very detailed information about how to send an update request and
 541         # the respone codes.
 542         # http://www.enom.com/APICommandCatalog/
 543
 544         url = "https://dynamic.name-services.com/interface.asp"
 545
 546         def update(self):
 547                 data = {
 548                         "command"        : "setdnshost",
 549                         "responsetype"   : "xml",
 550                         "address"        : self.get_address("ipv4"),
 551                         "domainpassword" : self.password,
 552                         "zone"           : self.hostname
 553                 }
 554
 555                 # Send update to the server.
 556                 response = self.send_request(self.url, data=data)
 557
 558                 # Get the full response message.
 559                 output = response.read()
 560
 561                 # Handle success messages.
 562                 if self.get_xml_tag_value(output, "ErrCount") == "0":
 563                         return
 564
 565                 # Handle error codes.
 566                 errorcode = self.get_xml_tag_value(output, "ResponseNumber")
 567
 568                 if errorcode == "304155":
 569                         raise DDNSAuthenticationError
 570                 elif errorcode == "304153":
 571                         raise DDNSRequestError(_("Domain not found."))
 572
 573                 # If we got here, some other update error happened.
 574                 raise DDNSUpdateError
 575
 576
 577 class DDNSProviderFreeDNSAfraidOrg(DDNSProvider):
 578         handle    = "freedns.afraid.org"
 579         name      = "freedns.afraid.org"
 580         website   = "http://freedns.afraid.org/"
 581
 582         # No information about the request or response could be found on the vendor
 583         # page. All used values have been collected by testing.
 584         url = "https://freedns.afraid.org/dynamic/update.php"
 585
 586         @property
 587         def proto(self):
 588                 return self.get("proto")
 589
 590         def update(self):
 591                 address = self.get_address(self.proto)
 592
 593                 data = {
 594                         "address" : address,
 595                 }
 596
 597                 # Add auth token to the update url.
 598                 url = "%s?%s" % (self.url, self.token)
 599
 600                 # Send update to the server.
 601                 response = self.send_request(url, data=data)
 602
 603                 if output.startswith("Updated") or "has not changed" in output:
 604                         return
 605
 606                 # Handle error codes.
 607                 if output == "ERROR: Unable to locate this record":
 608                         raise DDNSAuthenticationError
 609                 elif "is an invalid IP address" in output:
 610                         raise DDNSRequestError(_("Invalid IP address has been sent."))
 611
 612                 # If we got here, some other update error happened.
 613                 raise DDNSUpdateError
 614
 615
 616 class DDNSProviderLightningWireLabs(DDNSProvider):
 617         handle    = "dns.lightningwirelabs.com"
 618         name      = "Lightning Wire Labs DNS Service"
 619         website   = "http://dns.lightningwirelabs.com/"
 620
 621         # Information about the format of the HTTPS request is to be found
 622         # https://dns.lightningwirelabs.com/knowledge-base/api/ddns
 623
 624         url = "https://dns.lightningwirelabs.com/update"
 625
 626         def update(self):
 627                 data =  {
 628                         "hostname" : self.hostname,
 629                         "address6" : self.get_address("ipv6", "-"),
 630                         "address4" : self.get_address("ipv4", "-"),
 631                 }
 632
 633                 # Check if a token has been set.
 634                 if self.token:
 635                         data["token"] = self.token
 636
 637                 # Check for username and password.
 638                 elif self.username and self.password:
 639                         data.update({
 640                                 "username" : self.username,
 641                                 "password" : self.password,
 642                         })
 643
 644                 # Raise an error if no auth details are given.
 645                 else:
 646                         raise DDNSConfigurationError
 647
 648                 # Send update to the server.
 649                 response = self.send_request(self.url, data=data)
 650
 651                 # Handle success messages.
 652                 if response.code == 200:
 653                         return
 654
 655                 # If we got here, some other update error happened.
 656                 raise DDNSUpdateError
 657
 658
 659 class DDNSProviderNamecheap(DDNSResponseParserXML, DDNSProvider):
 660         handle    = "namecheap.com"
 661         name      = "Namecheap"
 662         website   = "http://namecheap.com"
 663         protocols = ("ipv4",)
 664
 665         # Information about the format of the HTTP request is to be found
 666         # https://www.namecheap.com/support/knowledgebase/article.aspx/9249/0/nc-dynamic-dns-to-dyndns-adapter
 667         # https://community.namecheap.com/forums/viewtopic.php?f=6&t=6772
 668
 669         url = "https://dynamicdns.park-your-domain.com/update"
 670
 671         def update(self):
 672                 # Namecheap requires the hostname splitted into a host and domain part.
 673                 host, domain = self.hostname.split(".", 1)
 674
 675                 data = {
 676                         "ip"       : self.get_address("ipv4"),
 677                         "password" : self.password,
 678                         "host"     : host,
 679                         "domain"   : domain
 680                 }
 681
 682                 # Send update to the server.
 683                 response = self.send_request(self.url, data=data)
 684
 685                 # Get the full response message.
 686                 output = response.read()
 687
 688                 # Handle success messages.
 689                 if self.get_xml_tag_value(output, "IP") == self.get_address("ipv4"):
 690                         return
 691
 692                 # Handle error codes.
 693                 errorcode = self.get_xml_tag_value(output, "ResponseNumber")
 694
 695                 if errorcode == "304156":
 696                         raise DDNSAuthenticationError
 697                 elif errorcode == "316153":
 698                         raise DDNSRequestError(_("Domain not found."))
 699                 elif errorcode == "316154":
 700                         raise DDNSRequestError(_("Domain not active."))
 701                 elif errorcode in ("380098", "380099"):
 702                         raise DDNSInternalServerError
 703
 704                 # If we got here, some other update error happened.
 705                 raise DDNSUpdateError
 706
 707
 708 class DDNSProviderNOIP(DDNSProtocolDynDNS2, DDNSProvider):
 709         handle    = "no-ip.com"
 710         name      = "No-IP"
 711         website   = "http://www.no-ip.com/"
 712         protocols = ("ipv4",)
 713
 714         # Information about the format of the HTTP request is to be found
 715         # here: http://www.no-ip.com/integrate/request and
 716         # here: http://www.no-ip.com/integrate/response
 717
 718         url = "http://dynupdate.no-ip.com/nic/update"
 719
 720         def _prepare_request_data(self):
 721                 data = {
 722                         "hostname" : self.hostname,
 723                         "address"  : self.get_address("ipv4"),
 724                 }
 725
 726                 return data
 727
 728
 729 class DDNSProviderNsupdateINFO(DDNSProtocolDynDNS2, DDNSProvider):
 730         handle    = "nsupdate.info"
 731         name      = "nsupdate.info"
 732         website   = "http://www.nsupdate.info/"
 733         protocols = ("ipv6", "ipv4",)
 734
 735         # Information about the format of the HTTP request can be found
 736         # after login on the provider user intrface and here:
 737         # http://nsupdateinfo.readthedocs.org/en/latest/user.html
 738
 739         # Nsupdate.info uses the hostname as user part for the HTTP basic auth,
 740         # and for the password a so called secret.
 741         @property
 742         def username(self):
 743                 return self.get("hostname")
 744
 745         @property
 746         def password(self):
 747                 return self.get("secret")
 748
 749         @property
 750         def proto(self):
 751                 return self.get("proto")
 752
 753         @property
 754         def url(self):
 755                 # The update URL is different by the used protocol.
 756                 if self.proto == "ipv4":
 757                         return "https://ipv4.nsupdate.info/nic/update"
 758                 elif self.proto == "ipv6":
 759                         return "https://ipv6.nsupdate.info/nic/update"
 760                 else:
 761                         raise DDNSUpdateError(_("Invalid protocol has been given"))
 762
 763         def _prepare_request_data(self):
 764                 data = {
 765                         "myip" : self.get_address(self.proto),
 766                 }
 767
 768                 return data
 769
 770
 771 class DDNSProviderOVH(DDNSProtocolDynDNS2, DDNSProvider):
 772         handle    = "ovh.com"
 773         name      = "OVH"
 774         website   = "http://www.ovh.com/"
 775         protocols = ("ipv4",)
 776
 777         # OVH only provides very limited information about how to
 778         # update a DynDNS host. They only provide the update url
 779         # on the their german subpage.
 780         #
 781         # http://hilfe.ovh.de/DomainDynHost
 782
 783         url = "https://www.ovh.com/nic/update"
 784
 785         def _prepare_request_data(self):
 786                 data = DDNSProtocolDynDNS2._prepare_request_data(self)
 787                 data.update({
 788                         "system" : "dyndns",
 789                 })
 790
 791                 return data
 792
 793
 794 class DDNSProviderRegfish(DDNSProvider):
 795         handle  = "regfish.com"
 796         name    = "Regfish GmbH"
 797         website = "http://www.regfish.com/"
 798
 799         # A full documentation to the providers api can be found here
 800         # but is only available in german.
 801         # https://www.regfish.de/domains/dyndns/dokumentation
 802
 803         url = "https://dyndns.regfish.de/"
 804
 805         def update(self):
 806                 data = {
 807                         "fqdn" : self.hostname,
 808                 }
 809
 810                 # Check if we update an IPv6 address.
 811                 address6 = self.get_address("ipv6")
 812                 if address6:
 813                         data["ipv6"] = address6
 814
 815                 # Check if we update an IPv4 address.
 816                 address4 = self.get_address("ipv4")
 817                 if address4:
 818                         data["ipv4"] = address4
 819
 820                 # Raise an error if none address is given.
 821                 if not data.has_key("ipv6") and not data.has_key("ipv4"):
 822                         raise DDNSConfigurationError
 823
 824                 # Check if a token has been set.
 825                 if self.token:
 826                         data["token"] = self.token
 827
 828                 # Raise an error if no token and no useranem and password
 829                 # are given.
 830                 elif not self.username and not self.password:
 831                         raise DDNSConfigurationError(_("No Auth details specified."))
 832
 833                 # HTTP Basic Auth is only allowed if no token is used.
 834                 if self.token:
 835                         # Send update to the server.
 836                         response = self.send_request(self.url, data=data)
 837                 else:
 838                         # Send update to the server.
 839                         response = self.send_request(self.url, username=self.username, password=self.password,
 840                                 data=data)
 841
 842                 # Get the full response message.
 843                 output = response.read()
 844
 845                 # Handle success messages.
 846                 if "100" in output or "101" in output:
 847                         return
 848
 849                 # Handle error codes.
 850                 if "401" or "402" in output:
 851                         raise DDNSAuthenticationError
 852                 elif "408" in output:
 853                         raise DDNSRequestError(_("Invalid IPv4 address has been sent."))
 854                 elif "409" in output:
 855                         raise DDNSRequestError(_("Invalid IPv6 address has been sent."))
 856                 elif "412" in output:
 857                         raise DDNSRequestError(_("No valid FQDN was given."))
 858                 elif "414" in output:
 859                         raise DDNSInternalServerError
 860
 861                 # If we got here, some other update error happened.
 862                 raise DDNSUpdateError
 863
 864
 865 class DDNSProviderSelfhost(DDNSProtocolDynDNS2, DDNSProvider):
 866         handle    = "selfhost.de"
 867         name      = "Selfhost.de"
 868         website   = "http://www.selfhost.de/"
 869         protocols = ("ipv4",)
 870
 871         url = "https://carol.selfhost.de/nic/update"
 872
 873         def _prepare_request_data(self):
 874                 data = DDNSProviderDynDNS._prepare_request_data(self)
 875                 data.update({
 876                         "hostname" : "1",
 877                 })
 878
 879                 return data
 880
 881
 882 class DDNSProviderSPDNS(DDNSProtocolDynDNS2, DDNSProvider):
 883         handle    = "spdns.org"
 884         name      = "SPDNS"
 885         website   = "http://spdns.org/"
 886         protocols = ("ipv4",)
 887
 888         # Detailed information about request and response codes are provided
 889         # by the vendor. They are using almost the same mechanism and status
 890         # codes as dyndns.org so we can inherit all those stuff.
 891         #
 892         # http://wiki.securepoint.de/index.php/SPDNS_FAQ
 893         # http://wiki.securepoint.de/index.php/SPDNS_Update-Tokens
 894
 895         url = "https://update.spdns.de/nic/update"
 896
 897
 898 class DDNSProviderStrato(DDNSProtocolDynDNS2, DDNSProvider):
 899         handle    = "strato.com"
 900         name      = "Strato AG"
 901         website   = "http:/www.strato.com/"
 902         protocols = ("ipv4",)
 903
 904         # Information about the request and response can be obtained here:
 905         # http://www.strato-faq.de/article/671/So-einfach-richten-Sie-DynDNS-f%C3%BCr-Ihre-Domains-ein.html
 906
 907         url = "https://dyndns.strato.com/nic/update"
 908
 909
 910 class DDNSProviderTwoDNS(DDNSProtocolDynDNS2, DDNSProvider):
 911         handle    = "twodns.de"
 912         name      = "TwoDNS"
 913         website   = "http://www.twodns.de"
 914         protocols = ("ipv4",)
 915
 916         # Detailed information about the request can be found here
 917         # http://twodns.de/en/faqs
 918         # http://twodns.de/en/api
 919
 920         url = "https://update.twodns.de/update"
 921
 922         def _prepare_request_data(self):
 923                 data = {
 924                         "ip" : self.get_address("ipv4"),
 925                         "hostname" : self.hostname
 926                 }
 927
 928                 return data
 929
 930
 931 class DDNSProviderUdmedia(DDNSProtocolDynDNS2, DDNSProvider):
 932         handle    = "udmedia.de"
 933         name      = "Udmedia GmbH"
 934         website   = "http://www.udmedia.de"
 935         protocols = ("ipv4",)
 936
 937         # Information about the request can be found here
 938         # http://www.udmedia.de/faq/content/47/288/de/wie-lege-ich-einen-dyndns_eintrag-an.html
 939
 940         url = "https://www.udmedia.de/nic/update"
 941
 942
 943 class DDNSProviderVariomedia(DDNSProtocolDynDNS2, DDNSProvider):
 944         handle    = "variomedia.de"
 945         name      = "Variomedia"
 946         website   = "http://www.variomedia.de/"
 947         protocols = ("ipv6", "ipv4",)
 948
 949         # Detailed information about the request can be found here
 950         # https://dyndns.variomedia.de/
 951
 952         url = "https://dyndns.variomedia.de/nic/update"
 953
 954         @property
 955         def proto(self):
 956                 return self.get("proto")
 957
 958         def _prepare_request_data(self):
 959                 data = {
 960                         "hostname" : self.hostname,
 961                         "myip"     : self.get_address(self.proto)
 962                 }
 963
 964                 return data
 965
 966
 967 class DDNSProviderZoneedit(DDNSProtocolDynDNS2, DDNSProvider):
 968         handle    = "zoneedit.com"
 969         name      = "Zoneedit"
 970         website   = "http://www.zoneedit.com"
 971         protocols = ("ipv4",)
 972
 973         # Detailed information about the request and the response codes can be
 974         # obtained here:
 975         # http://www.zoneedit.com/doc/api/other.html
 976         # http://www.zoneedit.com/faq.html
 977
 978         url = "https://dynamic.zoneedit.com/auth/dynamic.html"
 979
 980         @property
 981         def proto(self):
 982                 return self.get("proto")
 983
 984         def update(self):
 985                 data = {
 986                         "dnsto" : self.get_address(self.proto),
 987                         "host"  : self.hostname
 988                 }
 989
 990                 # Send update to the server.
 991                 response = self.send_request(self.url, username=self.username, password=self.password,
 992                         data=data)
 993
 994                 # Get the full response message.
 995                 output = response.read()
 996
 997                 # Handle success messages.
 998                 if output.startswith("<SUCCESS"):
 999                         return
1000
1001                 # Handle error codes.
1002                 if output.startswith("invalid login"):
1003                         raise DDNSAuthenticationError
1004                 elif output.startswith("<ERROR CODE=\"704\""):
1005                         raise DDNSRequestError(_("No valid FQDN was given."))
1006                 elif output.startswith("<ERROR CODE=\"702\""):
1007                         raise DDNSInternalServerError
1008
1009                 # If we got here, some other update error happened.
1010                 raise DDNSUpdateError