mirror of https://github.com/morpheus65535/bazarr
48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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import struct
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import dns.immutable
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import dns.rdtypes.util
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@dns.immutable.immutable
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class NID(dns.rdata.Rdata):
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"""NID record"""
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# see: rfc6742.txt
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__slots__ = ['preference', 'nodeid']
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def __init__(self, rdclass, rdtype, preference, nodeid):
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super().__init__(rdclass, rdtype)
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self.preference = self._as_uint16(preference)
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if isinstance(nodeid, bytes):
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if len(nodeid) != 8:
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raise ValueError('invalid nodeid')
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self.nodeid = dns.rdata._hexify(nodeid, 4, b':')
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else:
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dns.rdtypes.util.parse_formatted_hex(nodeid, 4, 4, ':')
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self.nodeid = nodeid
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def to_text(self, origin=None, relativize=True, **kw):
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return f'{self.preference} {self.nodeid}'
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@classmethod
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def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True,
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relativize_to=None):
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preference = tok.get_uint16()
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nodeid = tok.get_identifier()
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return cls(rdclass, rdtype, preference, nodeid)
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def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
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file.write(struct.pack('!H', self.preference))
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file.write(dns.rdtypes.util.parse_formatted_hex(self.nodeid, 4, 4, ':'))
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@classmethod
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def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
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preference = parser.get_uint16()
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nodeid = parser.get_remaining()
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return cls(rdclass, rdtype, preference, nodeid)
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