Yu1709$!%yuyu!$%wutu!5=126+

                
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      \_/     \/    @ligmakokz

Editing: reversename.py

# Copyright (C) 2006, 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.

"""DNS Reverse Map Names.

@var ipv4_reverse_domain: The DNS IPv4 reverse-map domain, in-addr.arpa.
@type ipv4_reverse_domain: dns.name.Name object
@var ipv6_reverse_domain: The DNS IPv6 reverse-map domain, ip6.arpa.
@type ipv6_reverse_domain: dns.name.Name object
"""

import dns.name
import dns.ipv6
import dns.ipv4

ipv4_reverse_domain = dns.name.from_text('in-addr.arpa.')
ipv6_reverse_domain = dns.name.from_text('ip6.arpa.')

def from_address(text):
    """Convert an IPv4 or IPv6 address in textual form into a Name object whose
    value is the reverse-map domain name of the address.
    @param text: an IPv4 or IPv6 address in textual form (e.g. '127.0.0.1',
    '::1')
    @type text: str
    @rtype: dns.name.Name object
    """
    try:
        v6 = dns.ipv6.inet_aton(text)
        if dns.ipv6.is_mapped(v6):
            parts = ['%d' % ord(byte) for byte in v6[12:]]
            origin = ipv4_reverse_domain
        else:
            parts = list(v6.encode('hex_codec'))
            origin = ipv6_reverse_domain
    except:
        parts = ['%d' % ord(byte) for byte in dns.ipv4.inet_aton(text)]
        origin = ipv4_reverse_domain
    parts.reverse()
    return dns.name.from_text('.'.join(parts), origin=origin)

def to_address(name):
    """Convert a reverse map domain name into textual address form.
    @param name: an IPv4 or IPv6 address in reverse-map form.
    @type name: dns.name.Name object
    @rtype: str
    """
    if name.is_subdomain(ipv4_reverse_domain):
        name = name.relativize(ipv4_reverse_domain)
        labels = list(name.labels)
        labels.reverse()
        text = '.'.join(labels)
        # run through inet_aton() to check syntax and make pretty.
        return dns.ipv4.inet_ntoa(dns.ipv4.inet_aton(text))
    elif name.is_subdomain(ipv6_reverse_domain):
        name = name.relativize(ipv6_reverse_domain)
        labels = list(name.labels)
        labels.reverse()
        parts = []
        i = 0
        l = len(labels)
        while i < l:
            parts.append(''.join(labels[i:i+4]))
            i += 4
        text = ':'.join(parts)
        # run through inet_aton() to check syntax and make pretty.
        return dns.ipv6.inet_ntoa(dns.ipv6.inet_aton(text))
    else:
        raise dns.exception.SyntaxError('unknown reverse-map address family')

Name	Type	Actions
rdtypes	Directory
__init__.py	File
__init__.pyc	File
dnssec.py	File
e164.py	File
edns.py	File
edns.pyc	File
entropy.py	File
entropy.pyc	File
exception.py	File
exception.pyc	File
flags.py	File
flags.pyc	File
grange.py	File
hash.py	File
hash.pyc	File
inet.py	File
inet.pyc	File
ipv4.py	File
ipv4.pyc	File
ipv6.py	File
ipv6.pyc	File
message.py	File
message.pyc	File
name.py	File
name.pyc	File
namedict.py	File
node.py	File
opcode.py	File
opcode.pyc	File
query.py	File
query.pyc	File
rcode.py	File
rcode.pyc	File
rdata.py	File
rdata.pyc	File
rdataclass.py	File
rdataclass.pyc	File
rdataset.py	File
rdataset.pyc	File
rdatatype.py	File
rdatatype.pyc	File
renderer.py	File
renderer.pyc	File
resolver.py	File
resolver.pyc	File
reversename.py	File
reversename.pyc	File
rrset.py	File
rrset.pyc	File
set.py	File
set.pyc	File
tokenizer.py	File
tokenizer.pyc	File
tsig.py	File
tsig.pyc	File
tsigkeyring.py	File
ttl.py	File
ttl.pyc	File
update.py	File
version.py	File
wiredata.py	File
wiredata.pyc	File
zone.py	File