# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# 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.immutable
import dns.rdata
import dns.tokenizer
[docs]
@dns.immutable.immutable
class HINFO(dns.rdata.Rdata):
"""HINFO record"""
# see: RFC 1035
__slots__ = ["cpu", "os"]
def __init__(self, rdclass, rdtype, cpu, os):
super().__init__(rdclass, rdtype)
self.cpu = self._as_bytes(cpu, True, 255)
self.os = self._as_bytes(os, True, 255)
[docs]
def to_text(self, origin=None, relativize=True, **kw):
return '"{}" "{}"'.format(
dns.rdata._escapify(self.cpu), dns.rdata._escapify(self.os)
)
@classmethod
def from_text(
cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
):
cpu = tok.get_string(max_length=255)
os = tok.get_string(max_length=255)
return cls(rdclass, rdtype, cpu, os)
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
l = len(self.cpu)
assert l < 256
file.write(struct.pack("!B", l))
file.write(self.cpu)
l = len(self.os)
assert l < 256
file.write(struct.pack("!B", l))
file.write(self.os)
@classmethod
def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
cpu = parser.get_counted_bytes()
os = parser.get_counted_bytes()
return cls(rdclass, rdtype, cpu, os)