Source code for dns.rdtypes.ANY.SSHFP

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import binascii
import struct

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


[docs] @dns.immutable.immutable class SSHFP(dns.rdata.Rdata): """SSHFP record""" # See RFC 4255 __slots__ = ["algorithm", "fp_type", "fingerprint"] def __init__(self, rdclass, rdtype, algorithm, fp_type, fingerprint): super().__init__(rdclass, rdtype) self.algorithm = self._as_uint8(algorithm) self.fp_type = self._as_uint8(fp_type) self.fingerprint = self._as_bytes(fingerprint, True)
[docs] def to_text(self, origin=None, relativize=True, **kw): kw = kw.copy() chunksize = kw.pop("chunksize", 128) return "%d %d %s" % ( self.algorithm, self.fp_type, dns.rdata._hexify(self.fingerprint, chunksize=chunksize, **kw), )
@classmethod def from_text( cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None ): algorithm = tok.get_uint8() fp_type = tok.get_uint8() fingerprint = tok.concatenate_remaining_identifiers().encode() fingerprint = binascii.unhexlify(fingerprint) return cls(rdclass, rdtype, algorithm, fp_type, fingerprint) def _to_wire(self, file, compress=None, origin=None, canonicalize=False): header = struct.pack("!BB", self.algorithm, self.fp_type) file.write(header) file.write(self.fingerprint) @classmethod def from_wire_parser(cls, rdclass, rdtype, parser, origin=None): header = parser.get_struct("BB") fingerprint = parser.get_remaining() return cls(rdclass, rdtype, header[0], header[1], fingerprint)