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# Copyright (C) 2003-2007, 2009, 2010 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
"""IPv4 helper functions."""
import socket
import sys
if sys.hexversion < 0x02030000 or sys.platform == 'win32':
#
# Some versions of Python 2.2 have an inet_aton which rejects
# the valid IP address '255.255.255.255'. It appears this
# problem is still present on the Win32 platform even in 2.3.
# We'll work around the problem.
#
def inet_aton(text):
if text == '255.255.255.255':
return '\xff' * 4
else:
return socket.inet_aton(text)
else:
inet_aton = socket.inet_aton
inet_ntoa = socket.inet_ntoa
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