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📄 __init__.py(1.3 KB)
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📄 _compat.py(1.28 KB)
📄 dnssec.py(14.44 KB)
📄 e164.py(3.07 KB)
📄 edns.py(4.28 KB)
📄 entropy.py(4.36 KB)
📄 exception.py(4.52 KB)
📄 flags.py(2.6 KB)
📄 grange.py(1.93 KB)
📄 hash.py(1.07 KB)
📄 inet.py(3.17 KB)
📄 ipv4.py(1.98 KB)
📄 ipv6.py(5.17 KB)
📄 message.py(42.12 KB)
📄 name.py(28.74 KB)
📄 namedict.py(3.59 KB)
📄 node.py(5.91 KB)
📄 opcode.py(2.48 KB)
📄 query.py(19.18 KB)
📄 rcode.py(3.03 KB)
📄 rdata.py(14.65 KB)
📄 rdataclass.py(3.18 KB)
📄 rdataset.py(11.29 KB)
📄 rdatatype.py(5.21 KB)
📁 rdtypes
📄 renderer.py(11.64 KB)
📄 resolver.py(50.88 KB)
📄 reversename.py(3.23 KB)
📄 rrset.py(5.85 KB)
📄 set.py(7.53 KB)
📄 tokenizer.py(17.88 KB)
📄 tsig.py(7.54 KB)
📄 tsigkeyring.py(1.7 KB)
📄 ttl.py(2.23 KB)
📄 update.py(9.78 KB)
📄 version.py(1.23 KB)
📄 wiredata.py(3.64 KB)
📄 zone.py(39.09 KB)

Editing: 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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