133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# Copyright (C) 2003-2007, 2009, 2010 Nominum, Inc. 233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# 333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# Permission to use, copy, modify, and distribute this software and its 433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# documentation for any purpose with or without fee is hereby granted, 533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# provided that the above copyright notice and this permission notice 633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# appear in all copies. 733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# 833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES 933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 1033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR 1133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 1233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 1333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 1433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 1533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 1633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck"""IPv4 helper functions.""" 1733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 1833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport socket 1933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport sys 2033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckif sys.hexversion < 0x02030000 or sys.platform == 'win32': 2233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # 2333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # Some versions of Python 2.2 have an inet_aton which rejects 2433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # the valid IP address '255.255.255.255'. It appears this 2533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # problem is still present on the Win32 platform even in 2.3. 2633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # We'll work around the problem. 2733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # 2833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def inet_aton(text): 2933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if text == '255.255.255.255': 3033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return '\xff' * 4 3133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck else: 3233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return socket.inet_aton(text) 3333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckelse: 3433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck inet_aton = socket.inet_aton 3533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 3633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckinet_ntoa = socket.inet_ntoa 37