mirror of https://github.com/morpheus65535/bazarr
86 lines
3.2 KiB
Python
86 lines
3.2 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
|
|
|
|
# Copyright (C) 2010, 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 base64
|
|
import binascii
|
|
|
|
import dns.exception
|
|
import dns.immutable
|
|
import dns.rdata
|
|
import dns.rdatatype
|
|
|
|
|
|
@dns.immutable.immutable
|
|
class HIP(dns.rdata.Rdata):
|
|
|
|
"""HIP record"""
|
|
|
|
# see: RFC 5205
|
|
|
|
__slots__ = ['hit', 'algorithm', 'key', 'servers']
|
|
|
|
def __init__(self, rdclass, rdtype, hit, algorithm, key, servers):
|
|
super().__init__(rdclass, rdtype)
|
|
self.hit = self._as_bytes(hit, True, 255)
|
|
self.algorithm = self._as_uint8(algorithm)
|
|
self.key = self._as_bytes(key, True)
|
|
self.servers = self._as_tuple(servers, self._as_name)
|
|
|
|
def to_text(self, origin=None, relativize=True, **kw):
|
|
hit = binascii.hexlify(self.hit).decode()
|
|
key = base64.b64encode(self.key).replace(b'\n', b'').decode()
|
|
text = ''
|
|
servers = []
|
|
for server in self.servers:
|
|
servers.append(server.choose_relativity(origin, relativize))
|
|
if len(servers) > 0:
|
|
text += (' ' + ' '.join((x.to_unicode() for x in servers)))
|
|
return '%u %s %s%s' % (self.algorithm, hit, key, text)
|
|
|
|
@classmethod
|
|
def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True,
|
|
relativize_to=None):
|
|
algorithm = tok.get_uint8()
|
|
hit = binascii.unhexlify(tok.get_string().encode())
|
|
key = base64.b64decode(tok.get_string().encode())
|
|
servers = []
|
|
for token in tok.get_remaining():
|
|
server = tok.as_name(token, origin, relativize, relativize_to)
|
|
servers.append(server)
|
|
return cls(rdclass, rdtype, hit, algorithm, key, servers)
|
|
|
|
def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
|
|
lh = len(self.hit)
|
|
lk = len(self.key)
|
|
file.write(struct.pack("!BBH", lh, self.algorithm, lk))
|
|
file.write(self.hit)
|
|
file.write(self.key)
|
|
for server in self.servers:
|
|
server.to_wire(file, None, origin, False)
|
|
|
|
@classmethod
|
|
def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
|
|
(lh, algorithm, lk) = parser.get_struct('!BBH')
|
|
hit = parser.get_bytes(lh)
|
|
key = parser.get_bytes(lk)
|
|
servers = []
|
|
while parser.remaining() > 0:
|
|
server = parser.get_name(origin)
|
|
servers.append(server)
|
|
return cls(rdclass, rdtype, hit, algorithm, key, servers)
|