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?? NSEC3.py(6.91 KB)
?? NSEC3PARAM.py(3.03 KB)
?? PTR.py(875 B)
?? RP.py(3 KB)
?? RRSIG.py(5.53 KB)
?? RT.py(891 B)
?? SOA.py(4.41 KB)
?? SPF.py(899 B)
?? SSHFP.py(2.76 KB)
?? TLSA.py(2.89 KB)
?? TXT.py(878 B)
?? URI.py(2.83 KB)
?? X25.py(2.07 KB)
?? __init__.py(1.19 KB)
?? __pycache__

Editing: TLSA.py

# Copyright (C) 2005-2007, 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 struct
import binascii

import dns.rdata
import dns.rdatatype

class TLSA(dns.rdata.Rdata):

"""TLSA record

@ivar usage: The certificate usage
    @type usage: int
    @ivar selector: The selector field
    @type selector: int
    @ivar mtype: The 'matching type' field
    @type mtype: int
    @ivar cert: The 'Certificate Association Data' field
    @type cert: string
    @see: RFC 6698"""

__slots__ = ['usage', 'selector', 'mtype', 'cert']

def __init__(self, rdclass, rdtype, usage, selector,
                 mtype, cert):
        super(TLSA, self).__init__(rdclass, rdtype)
        self.usage = usage
        self.selector = selector
        self.mtype = mtype
        self.cert = cert

def to_text(self, origin=None, relativize=True, **kw):
        return '%d %d %d %s' % (self.usage,
                                self.selector,
                                self.mtype,
                                dns.rdata._hexify(self.cert,
                                                  chunksize=128))

@classmethod
    def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        usage = tok.get_uint8()
        selector = tok.get_uint8()
        mtype = tok.get_uint8()
        cert_chunks = []
        while 1:
            t = tok.get().unescape()
            if t.is_eol_or_eof():
                break
            if not t.is_identifier():
                raise dns.exception.SyntaxError
            cert_chunks.append(t.value.encode())
        cert = b''.join(cert_chunks)
        cert = binascii.unhexlify(cert)
        return cls(rdclass, rdtype, usage, selector, mtype, cert)

def to_wire(self, file, compress=None, origin=None):
        header = struct.pack("!BBB", self.usage, self.selector, self.mtype)
        file.write(header)
        file.write(self.cert)

@classmethod
    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
        header = struct.unpack("!BBB", wire[current: current + 3])
        current += 3
        rdlen -= 3
        cert = wire[current: current + rdlen].unwrap()
        return cls(rdclass, rdtype, header[0], header[1], header[2], cert)

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