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proc
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proc
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usr
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lib
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python3.6
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dns
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files >> //proc/thread-self/root/proc/self/root/proc/self/root/usr/lib/python3.6/site-packages/dns/inet.py
# Copyright (C) 2003-2007, 2009-2011 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. """Generic Internet address helper functions.""" import socket import dns.ipv4 import dns.ipv6 # We assume that AF_INET is always defined. AF_INET = socket.AF_INET # AF_INET6 might not be defined in the socket module, but we need it. # We'll try to use the socket module's value, and if it doesn't work, # we'll use our own value. try: AF_INET6 = socket.AF_INET6 except AttributeError: AF_INET6 = 9999 def inet_pton(family, text): """Convert the textual form of a network address into its binary form. @param family: the address family @type family: int @param text: the textual address @type text: string @raises NotImplementedError: the address family specified is not implemented. @rtype: string """ if family == AF_INET: return dns.ipv4.inet_aton(text) elif family == AF_INET6: return dns.ipv6.inet_aton(text) else: raise NotImplementedError def inet_ntop(family, address): """Convert the binary form of a network address into its textual form. @param family: the address family @type family: int @param address: the binary address @type address: string @raises NotImplementedError: the address family specified is not implemented. @rtype: string """ if family == AF_INET: return dns.ipv4.inet_ntoa(address) elif family == AF_INET6: return dns.ipv6.inet_ntoa(address) else: raise NotImplementedError def af_for_address(text): """Determine the address family of a textual-form network address. @param text: the textual address @type text: string @raises ValueError: the address family cannot be determined from the input. @rtype: int """ try: dns.ipv4.inet_aton(text) return AF_INET except Exception: try: dns.ipv6.inet_aton(text) return AF_INET6 except: raise ValueError def is_multicast(text): """Is the textual-form network address a multicast address? @param text: the textual address @raises ValueError: the address family cannot be determined from the input. @rtype: bool """ try: first = ord(dns.ipv4.inet_aton(text)[0]) return first >= 224 and first <= 239 except Exception: try: first = ord(dns.ipv6.inet_aton(text)[0]) return first == 255 except Exception: raise ValueError
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