Gecko [ beacons-mine.com ]

Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2026-02-18 11:48
rdtypes	[ DIR ]	drwxr-xr-x	2026-02-18 11:48
__init__.py	1.3 KB	-rw-r--r--	2016-09-20 21:54
_compat.py	1.28 KB	-rw-r--r--	2016-09-20 21:54
dnssec.py	14.44 KB	-rw-r--r--	2016-09-20 21:54
e164.py	3.07 KB	-rw-r--r--	2016-09-20 21:54
edns.py	4.28 KB	-rw-r--r--	2016-09-20 21:54
entropy.py	4.36 KB	-rw-r--r--	2016-09-20 21:54
exception.py	4.52 KB	-rw-r--r--	2016-09-21 00:43
flags.py	2.6 KB	-rw-r--r--	2016-09-20 21:54
grange.py	1.93 KB	-rw-r--r--	2016-09-20 21:54
hash.py	1.07 KB	-rw-r--r--	2016-09-20 21:54
inet.py	3.17 KB	-rw-r--r--	2016-09-20 21:54
ipv4.py	1.98 KB	-rw-r--r--	2016-09-20 21:54
ipv6.py	5.17 KB	-rw-r--r--	2016-09-20 21:54
message.py	42.12 KB	-rw-r--r--	2016-09-26 21:08
name.py	28.74 KB	-rw-r--r--	2024-05-23 15:59
namedict.py	3.59 KB	-rw-r--r--	2016-09-20 21:54
node.py	5.91 KB	-rw-r--r--	2016-09-20 21:54
opcode.py	2.48 KB	-rw-r--r--	2016-09-20 21:54
query.py	19.18 KB	-rw-r--r--	2024-05-23 15:59
rcode.py	3.03 KB	-rw-r--r--	2016-09-20 21:54
rdata.py	14.65 KB	-rw-r--r--	2016-09-20 21:54
rdataclass.py	3.18 KB	-rw-r--r--	2016-09-20 21:54
rdataset.py	11.29 KB	-rw-r--r--	2016-09-20 21:54
rdatatype.py	5.21 KB	-rw-r--r--	2016-09-21 01:24
renderer.py	11.64 KB	-rw-r--r--	2016-09-20 21:54
resolver.py	50.88 KB	-rw-r--r--	2016-09-26 21:22
reversename.py	3.23 KB	-rw-r--r--	2016-09-20 21:54
rrset.py	5.85 KB	-rw-r--r--	2016-09-26 00:55
set.py	7.53 KB	-rw-r--r--	2016-09-20 21:54
tokenizer.py	17.88 KB	-rw-r--r--	2016-09-20 21:54
tsig.py	7.54 KB	-rw-r--r--	2016-09-20 21:54
tsigkeyring.py	1.7 KB	-rw-r--r--	2016-09-20 21:54
ttl.py	2.23 KB	-rw-r--r--	2016-09-20 21:54
update.py	9.78 KB	-rw-r--r--	2016-09-20 21:54
version.py	1.23 KB	-rw-r--r--	2016-09-20 21:54
wiredata.py	3.64 KB	-rw-r--r--	2016-09-20 21:54
zone.py	39.09 KB	-rw-r--r--	2016-09-30 03:59

Rename

# Copyright (C) 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 Wire Data Helper"""

import sys

import dns.exception
from ._compat import binary_type, string_types

# Figure out what constant python passes for an unspecified slice bound.
# It's supposed to be sys.maxint, yet on 64-bit windows sys.maxint is 2^31 - 1
# but Python uses 2^63 - 1 as the constant.  Rather than making pointless
# extra comparisons, duplicating code, or weakening WireData, we just figure
# out what constant Python will use.

class _SliceUnspecifiedBound(binary_type):

def __getitem__(self, key):
        return key.stop

if sys.version_info < (3,):
        def __getslice__(self, i, j):  # pylint: disable=getslice-method
            return self.__getitem__(slice(i, j))

_unspecified_bound = _SliceUnspecifiedBound()[1:]

class WireData(binary_type):
    # WireData is a string with stricter slicing

def __getitem__(self, key):
        try:
            if isinstance(key, slice):
                # make sure we are not going outside of valid ranges,
                # do stricter control of boundaries than python does
                # by default
                start = key.start
                stop = key.stop

if sys.version_info < (3,):
                    if stop == _unspecified_bound:
                        # handle the case where the right bound is unspecified
                        stop = len(self)

if start < 0 or stop < 0:
                        raise dns.exception.FormError
                    # If it's not an empty slice, access left and right bounds
                    # to make sure they're valid
                    if start != stop:
                        super(WireData, self).__getitem__(start)
                        super(WireData, self).__getitem__(stop - 1)
                else:
                    for index in (start, stop):
                        if index is None:
                            continue
                        elif abs(index) > len(self):
                            raise dns.exception.FormError

return WireData(super(WireData, self).__getitem__(
                    slice(start, stop)))
            return bytearray(self.unwrap())[key]
        except IndexError:
            raise dns.exception.FormError

if sys.version_info < (3,):
        def __getslice__(self, i, j):  # pylint: disable=getslice-method
            return self.__getitem__(slice(i, j))

def __iter__(self):
        i = 0
        while 1:
            try:
                yield self[i]
                i += 1
            except dns.exception.FormError:
                raise StopIteration

def unwrap(self):
        return binary_type(self)

def maybe_wrap(wire):
    if isinstance(wire, WireData):
        return wire
    elif isinstance(wire, binary_type):
        return WireData(wire)
    elif isinstance(wire, string_types):
        return WireData(wire.encode())
    raise ValueError("unhandled type %s" % type(wire))