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📄 AFSDB.py(1.8 KB)
📄 AVC.py(950 B)
📄 CAA.py(2.56 KB)
📄 CDNSKEY.py(1 KB)
📄 CDS.py(875 B)
📄 CERT.py(3.86 KB)
📄 CNAME.py(1.06 KB)
📄 CSYNC.py(4.54 KB)
📄 DLV.py(864 B)
📄 DNAME.py(979 B)
📄 DNSKEY.py(1 KB)
📄 DS.py(873 B)
📄 EUI48.py(1.1 KB)
📄 EUI64.py(1.11 KB)
📄 GPOS.py(5.24 KB)
📄 HINFO.py(2.6 KB)
📄 HIP.py(4.05 KB)
📄 ISDN.py(3.19 KB)
📄 LOC.py(11.98 KB)
📄 MX.py(873 B)
📄 NS.py(873 B)
📄 NSEC.py(4.58 KB)
📄 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: CAA.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.

import struct

import dns.exception
import dns.rdata
import dns.tokenizer

class CAA(dns.rdata.Rdata):

"""CAA (Certification Authority Authorization) record

@ivar flags: the flags
    @type flags: int
    @ivar tag: the tag
    @type tag: string
    @ivar value: the value
    @type value: string
    @see: RFC 6844"""

__slots__ = ['flags', 'tag', 'value']

def __init__(self, rdclass, rdtype, flags, tag, value):
        super(CAA, self).__init__(rdclass, rdtype)
        self.flags = flags
        self.tag = tag
        self.value = value

def to_text(self, origin=None, relativize=True, **kw):
        return '%u %s "%s"' % (self.flags,
                               dns.rdata._escapify(self.tag),
                               dns.rdata._escapify(self.value))

@classmethod
    def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        flags = tok.get_uint8()
        tag = tok.get_string().encode()
        if len(tag) > 255:
            raise dns.exception.SyntaxError("tag too long")
        if not tag.isalnum():
            raise dns.exception.SyntaxError("tag is not alphanumeric")
        value = tok.get_string().encode()
        return cls(rdclass, rdtype, flags, tag, value)

def to_wire(self, file, compress=None, origin=None):
        file.write(struct.pack('!B', self.flags))
        l = len(self.tag)
        assert l < 256
        file.write(struct.pack('!B', l))
        file.write(self.tag)
        file.write(self.value)

@classmethod
    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
        (flags, l) = struct.unpack('!BB', wire[current: current + 2])
        current += 2
        tag = wire[current: current + l]
        value = wire[current + l:current + rdlen - 2]
        return cls(rdclass, rdtype, flags, tag, value)

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