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proc
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thread-self
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root
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proc
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self
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root
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usr
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lib
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python3.6
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site-packages
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dns
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files >> //proc/thread-self/root/proc/self/root/usr/lib/python3.6/site-packages/dns/ipv4.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. """IPv4 helper functions.""" import struct import dns.exception from ._compat import binary_type def inet_ntoa(address): """Convert an IPv4 address in network form to text form. @param address: The IPv4 address @type address: string @returns: string """ if len(address) != 4: raise dns.exception.SyntaxError if not isinstance(address, bytearray): address = bytearray(address) return (u'%u.%u.%u.%u' % (address[0], address[1], address[2], address[3])).encode() def inet_aton(text): """Convert an IPv4 address in text form to network form. @param text: The IPv4 address @type text: string @returns: string """ if not isinstance(text, binary_type): text = text.encode() parts = text.split(b'.') if len(parts) != 4: raise dns.exception.SyntaxError for part in parts: if not part.isdigit(): raise dns.exception.SyntaxError if len(part) > 1 and part[0] == '0': # No leading zeros raise dns.exception.SyntaxError try: bytes = [int(part) for part in parts] return struct.pack('BBBB', *bytes) except: raise dns.exception.SyntaxError
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