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 all possible exception types.
  23 from .errors import *
  24
  25 class DDNSProvider(object):
  26         INFO = {
  27                 # A short string that uniquely identifies
  28                 # this provider.
  29                 "handle"    : None,
  30
  31                 # The full name of the provider.
  32                 "name"      : None,
  33
  34                 # A weburl to the homepage of the provider.
  35                 # (Where to register a new account?)
  36                 "website"   : None,
  37
  38                 # A list of supported protocols.
  39                 "protocols" : ["ipv6", "ipv4"],
  40         }
  41
  42         DEFAULT_SETTINGS = {}
  43
  44         def __init__(self, core, **settings):
  45                 self.core = core
  46
  47                 # Copy a set of default settings and
  48                 # update them by those from the configuration file.
  49                 self.settings = self.DEFAULT_SETTINGS.copy()
  50                 self.settings.update(settings)
  51
  52         def __repr__(self):
  53                 return "<DDNS Provider %s (%s)>" % (self.name, self.handle)
  54
  55         def __cmp__(self, other):
  56                 return cmp(self.hostname, other.hostname)
  57
  58         @property
  59         def name(self):
  60                 """
  61                         Returns the name of the provider.
  62                 """
  63                 return self.INFO.get("name")
  64
  65         @property
  66         def website(self):
  67                 """
  68                         Returns the website URL of the provider
  69                         or None if that is not available.
  70                 """
  71                 return self.INFO.get("website", None)
  72
  73         @property
  74         def handle(self):
  75                 """
  76                         Returns the handle of this provider.
  77                 """
  78                 return self.INFO.get("handle")
  79
  80         def get(self, key, default=None):
  81                 """
  82                         Get a setting from the settings dictionary.
  83                 """
  84                 return self.settings.get(key, default)
  85
  86         @property
  87         def hostname(self):
  88                 """
  89                         Fast access to the hostname.
  90                 """
  91                 return self.get("hostname")
  92
  93         @property
  94         def username(self):
  95                 """
  96                         Fast access to the username.
  97                 """
  98                 return self.get("username")
  99
 100         @property
 101         def password(self):
 102                 """
 103                         Fast access to the password.
 104                 """
 105                 return self.get("password")
 106
 107         def __call__(self):
 108                 raise NotImplementedError
 109
 110         def send_request(self, *args, **kwargs):
 111                 """
 112                         Proxy connection to the send request
 113                         method.
 114                 """
 115                 return self.core.system.send_request(*args, **kwargs)
 116
 117         def get_address(self, proto):
 118                 """
 119                         Proxy method to get the current IP address.
 120                 """
 121                 return self.core.system.get_address(proto)
 122
 123
 124 class DDNSProviderNOIP(DDNSProvider):
 125         INFO = {
 126                 "handle"    : "no-ip.com",
 127                 "name"      : "No-IP",
 128                 "website"   : "http://www.no-ip.com/",
 129                 "protocols" : ["ipv4",]
 130         }
 131
 132         # Information about the format of the HTTP request is to be found
 133         # here: http://www.no-ip.com/integrate/request and
 134         # here: http://www.no-ip.com/integrate/response
 135
 136         url = "http://%(username)s:%(password)s@dynupdate.no-ip.com/nic/update?hostname=%(hostname)s&myip=%(address)s"
 137
 138         def __call__(self):
 139                 url = self.url % {
 140                         "hostname" : self.hostname,
 141                         "username" : self.username,
 142                         "password" : self.password,
 143                         "address"  : self.get_address("ipv4"),
 144                 }
 145
 146                 # Send update to the server.
 147                 response = self.send_request(url)
 148
 149                 # Get the full response message.
 150                 output = response.read()
 151
 152                 # Handle success messages.
 153                 if output.startswith("good") or output.startswith("nochg"):
 154                         return
 155
 156                 # Handle error codes.
 157                 if output == "badauth":
 158                         raise DDNSAuthenticationError
 159                 elif output == "aduse":
 160                         raise DDNSAbuseError
 161                 elif output == "911":
 162                         raise DDNSInternalServerError
 163
 164                 # If we got here, some other update error happened.
 165                 raise DDNSUpdateError
 166
 167
 168 class DDNSProviderSelfhost(DDNSProvider):
 169         INFO = {
 170                 "handle"    : "selfhost.de",
 171                 "name"      : "Selfhost.de",
 172                 "website"   : "http://www.selfhost.de/",
 173                 "protocols" : ["ipv4",],
 174         }
 175
 176         url = "https://carol.selfhost.de/update?username=%(username)s&password=%(password)s&textmodi=1"
 177
 178         def __call__(self):
 179                 url = self.url % { "username" : self.username, "password" : self.password }
 180
 181                 response = self.send_request(url)
 182
 183                 match = re.search("status=20(0|4)", response.read())
 184                 if not match:
 185                         raise DDNSUpdateError