lib/socket_wrapper/socket.py

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