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📄 DNSKEY.py(4.46 KB)
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📄 DS.py(880 B)
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📄 GPOS.py(5.18 KB)
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📄 HIP.py(4.84 KB)
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📄 ISDN.py(3.17 KB)
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📄 LOC.py(12.63 KB)
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📄 MX.py(880 B)
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📄 MX.pyo(464 B)
📄 NS.py(880 B)
📄 NS.pyc(464 B)
📄 NS.pyo(464 B)
📄 NSEC.py(4.7 KB)
📄 NSEC.pyc(4.31 KB)
📄 NSEC.pyo(4.31 KB)
📄 NSEC3.py(6.65 KB)
📄 NSEC3.pyc(5.63 KB)
📄 NSEC3.pyo(5.63 KB)
📄 NSEC3PARAM.py(3.12 KB)
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📄 PTR.py(882 B)
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📄 RP.py(3.2 KB)
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📄 RRSIG.py(5.64 KB)
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📄 RT.py(898 B)
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📄 SOA.py(5.04 KB)
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📄 SPF.py(906 B)
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📄 SSHFP.py(3.06 KB)
📄 SSHFP.pyc(3.02 KB)
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📄 TLSA.py(3.18 KB)
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📄 X25.py(2.06 KB)
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📄 __init__.py(1.14 KB)
📄 __init__.pyc(604 B)
📄 __init__.pyo(604 B)

Editing: NSEC.py

# Copyright (C) 2004-2007, 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.

import cStringIO

import dns.exception
import dns.rdata
import dns.rdatatype
import dns.name

class NSEC(dns.rdata.Rdata):
    """NSEC record

@ivar next: the next name
    @type next: dns.name.Name object
    @ivar windows: the windowed bitmap list
    @type windows: list of (window number, string) tuples"""

__slots__ = ['next', 'windows']

def __init__(self, rdclass, rdtype, next, windows):
        super(NSEC, self).__init__(rdclass, rdtype)
        self.next = next
        self.windows = windows

def to_text(self, origin=None, relativize=True, **kw):
        next = self.next.choose_relativity(origin, relativize)
        text = ''
        for (window, bitmap) in self.windows:
            bits = []
            for i in xrange(0, len(bitmap)):
                byte = ord(bitmap[i])
                for j in xrange(0, 8):
                    if byte & (0x80 >> j):
                        bits.append(dns.rdatatype.to_text(window * 256 + \
                                                          i * 8 + j))
            text += (' ' + ' '.join(bits))
        return '%s%s' % (next, text)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        next = tok.get_name()
        next = next.choose_relativity(origin, relativize)
        rdtypes = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            nrdtype = dns.rdatatype.from_text(token.value)
            if nrdtype == 0:
                raise dns.exception.SyntaxError("NSEC with bit 0")
            if nrdtype > 65535:
                raise dns.exception.SyntaxError("NSEC with bit > 65535")
            rdtypes.append(nrdtype)
        rdtypes.sort()
        window = 0
        octets = 0
        prior_rdtype = 0
        bitmap = ['\0'] * 32
        windows = []
        for nrdtype in rdtypes:
            if nrdtype == prior_rdtype:
                continue
            prior_rdtype = nrdtype
            new_window = nrdtype // 256
            if new_window != window:
                windows.append((window, ''.join(bitmap[0:octets])))
                bitmap = ['\0'] * 32
                window = new_window
            offset = nrdtype % 256
            byte = offset // 8
            bit = offset % 8
            octets = byte + 1
            bitmap[byte] = chr(ord(bitmap[byte]) | (0x80 >> bit))
        windows.append((window, ''.join(bitmap[0:octets])))
        return cls(rdclass, rdtype, next, windows)

from_text = classmethod(from_text)

def to_wire(self, file, compress = None, origin = None):
        self.next.to_wire(file, None, origin)
        for (window, bitmap) in self.windows:
            file.write(chr(window))
            file.write(chr(len(bitmap)))
            file.write(bitmap)

def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
        (next, cused) = dns.name.from_wire(wire[: current + rdlen], current)
        current += cused
        rdlen -= cused
        windows = []
        while rdlen > 0:
            if rdlen < 3:
                raise dns.exception.FormError("NSEC too short")
            window = ord(wire[current])
            octets = ord(wire[current + 1])
            if octets == 0 or octets > 32:
                raise dns.exception.FormError("bad NSEC octets")
            current += 2
            rdlen -= 2
            if rdlen < octets:
                raise dns.exception.FormError("bad NSEC bitmap length")
            bitmap = wire[current : current + octets].unwrap()
            current += octets
            rdlen -= octets
            windows.append((window, bitmap))
        if not origin is None:
            next = next.relativize(origin)
        return cls(rdclass, rdtype, next, windows)

from_wire = classmethod(from_wire)

def choose_relativity(self, origin = None, relativize = True):
        self.next = self.next.choose_relativity(origin, relativize)

def _cmp(self, other):
        return self._wire_cmp(other)

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Editing: NSEC.py

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