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📄 AFSDB.py(1.62 KB)
📄 AMTRELAY.py(3.3 KB)
📄 AVC.py(1 KB)
📄 CAA.py(2.45 KB)
📄 CDNSKEY.py(1.2 KB)
📄 CDS.py(1.14 KB)
📄 CERT.py(3.45 KB)
📄 CNAME.py(1.18 KB)
📄 CSYNC.py(2.38 KB)
📄 DLV.py(986 B)
📄 DNAME.py(1.12 KB)
📄 DNSKEY.py(1.19 KB)
📄 DS.py(995 B)
📄 EUI48.py(1.12 KB)
📄 EUI64.py(1.13 KB)
📄 GPOS.py(4.33 KB)
📄 HINFO.py(2.17 KB)
📄 HIP.py(3.15 KB)
📄 ISDN.py(2.66 KB)
📄 L32.py(1.26 KB)
📄 L64.py(1.55 KB)
📄 LOC.py(11.71 KB)
📄 LP.py(1.31 KB)
📄 MX.py(995 B)
📄 NID.py(1.51 KB)
📄 NINFO.py(1.02 KB)
📄 NS.py(995 B)
📄 NSEC.py(2.41 KB)
📄 NSEC3.py(4.23 KB)
📄 NSEC3PARAM.py(2.57 KB)
📄 OPENPGPKEY.py(1.81 KB)
📄 OPT.py(2.5 KB)
📄 PTR.py(997 B)
📄 RESINFO.py(1008 B)
📄 RP.py(2.12 KB)
📄 RRSIG.py(4.81 KB)
📄 RT.py(1013 B)
📄 SMIMEA.py(222 B)
📄 SOA.py(3.07 KB)
📄 SPF.py(1022 B)
📄 SSHFP.py(2.47 KB)
📄 TKEY.py(4.81 KB)
📄 TLSA.py(218 B)
📄 TSIG.py(4.64 KB)
📄 TXT.py(1000 B)
📄 URI.py(2.85 KB)
📄 WALLET.py(219 B)
📄 X25.py(1.9 KB)
📄 ZONEMD.py(2.34 KB)
📄 __init__.py(1.49 KB)
📁 __pycache__

Editing: ZONEMD.py

# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

import binascii
import struct

import dns.immutable
import dns.rdata
import dns.rdatatype
import dns.zonetypes

@dns.immutable.immutable
class ZONEMD(dns.rdata.Rdata):
    """ZONEMD record"""

# See RFC 8976

__slots__ = ["serial", "scheme", "hash_algorithm", "digest"]

def __init__(self, rdclass, rdtype, serial, scheme, hash_algorithm, digest):
        super().__init__(rdclass, rdtype)
        self.serial = self._as_uint32(serial)
        self.scheme = dns.zonetypes.DigestScheme.make(scheme)
        self.hash_algorithm = dns.zonetypes.DigestHashAlgorithm.make(hash_algorithm)
        self.digest = self._as_bytes(digest)

if self.scheme == 0:  # reserved, RFC 8976 Sec. 5.2
            raise ValueError("scheme 0 is reserved")
        if self.hash_algorithm == 0:  # reserved, RFC 8976 Sec. 5.3
            raise ValueError("hash_algorithm 0 is reserved")

hasher = dns.zonetypes._digest_hashers.get(self.hash_algorithm)
        if hasher and hasher().digest_size != len(self.digest):
            raise ValueError("digest length inconsistent with hash algorithm")

def to_text(self, origin=None, relativize=True, **kw):
        kw = kw.copy()
        chunksize = kw.pop("chunksize", 128)
        return "%d %d %d %s" % (
            self.serial,
            self.scheme,
            self.hash_algorithm,
            dns.rdata._hexify(self.digest, chunksize=chunksize, **kw),
        )

@classmethod
    def from_text(
        cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
    ):
        serial = tok.get_uint32()
        scheme = tok.get_uint8()
        hash_algorithm = tok.get_uint8()
        digest = tok.concatenate_remaining_identifiers().encode()
        digest = binascii.unhexlify(digest)
        return cls(rdclass, rdtype, serial, scheme, hash_algorithm, digest)

def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
        header = struct.pack("!IBB", self.serial, self.scheme, self.hash_algorithm)
        file.write(header)
        file.write(self.digest)

@classmethod
    def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
        header = parser.get_struct("!IBB")
        digest = parser.get_remaining()
        return cls(rdclass, rdtype, header[0], header[1], header[2], digest)

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