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# Copyright 2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import sys
if sys.hexversion >= 0x3000000:
basestring = str
def getaddrinfo_validate(addrinfos):
"""
Validate structures returned from getaddrinfo(),
since they may be corrupt, especially when python
has IPv6 support disabled (bug #340899).
"""
valid_addrinfos = []
for addrinfo in addrinfos:
try:
if len(addrinfo) != 5:
continue
if len(addrinfo[4]) < 2:
continue
if not isinstance(addrinfo[4][0], basestring):
continue
except TypeError:
continue
valid_addrinfos.append(addrinfo)
return valid_addrinfos
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