lib/socket_wrapper/socket.py

   1 #!/usr/bin/env python
   2 #
   3 # Wrapper for socket wrapper (based on python socket wrapper)
   4 # Copyright (C) Amitay Isaacs 2011
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 import _socket
  21 from _socket import *
  22
  23 from samba.socket_wrapper import socket
  24
  25
  26 def getfqdn(name=''):
  27     """Get fully qualified domain name from name.
  28
  29     An empty argument is interpreted as meaning the local host.
  30
  31     First the hostname returned by gethostbyaddr() is checked, then
  32     possibly existing aliases. In case no FQDN is available, hostname
  33     from gethostname() is returned.
  34     """
  35     name = name.strip()
  36     if not name or name == '0.0.0.0':
  37         name = gethostname()
  38     try:
  39         hostname, aliases, ipaddrs = gethostbyaddr(name)
  40     except error:
  41         pass
  42     else:
  43         aliases.insert(0, hostname)
  44         for name in aliases:
  45             if '.' in name:
  46                 break
  47         else:
  48             name = hostname
  49     return name
  50
  51
  52 _GLOBAL_DEFAULT_TIMEOUT = object()