mirror of https://github.com/morpheus65535/bazarr
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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# Copyright (C) 2005-2007, 2009-2011 Nominum, Inc.
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#
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose with or without fee is hereby granted,
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# provided that the above copyright notice and this permission notice
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# appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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import struct
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import binascii
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import dns.rdata
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import dns.immutable
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import dns.rdatatype
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@dns.immutable.immutable
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class TLSABase(dns.rdata.Rdata):
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"""Base class for TLSA and SMIMEA records"""
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# see: RFC 6698
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__slots__ = ['usage', 'selector', 'mtype', 'cert']
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def __init__(self, rdclass, rdtype, usage, selector,
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mtype, cert):
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super().__init__(rdclass, rdtype)
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self.usage = self._as_uint8(usage)
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self.selector = self._as_uint8(selector)
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self.mtype = self._as_uint8(mtype)
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self.cert = self._as_bytes(cert)
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def to_text(self, origin=None, relativize=True, **kw):
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kw = kw.copy()
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chunksize = kw.pop('chunksize', 128)
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return '%d %d %d %s' % (self.usage,
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self.selector,
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self.mtype,
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dns.rdata._hexify(self.cert,
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chunksize=chunksize,
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**kw))
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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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usage = tok.get_uint8()
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selector = tok.get_uint8()
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mtype = tok.get_uint8()
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cert = tok.concatenate_remaining_identifiers().encode()
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cert = binascii.unhexlify(cert)
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return cls(rdclass, rdtype, usage, selector, mtype, cert)
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def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
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header = struct.pack("!BBB", self.usage, self.selector, self.mtype)
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file.write(header)
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file.write(self.cert)
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@classmethod
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def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
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header = parser.get_struct("BBB")
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cert = parser.get_remaining()
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return cls(rdclass, rdtype, header[0], header[1], header[2], cert)
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