mirror of https://github.com/morpheus65535/bazarr
84 lines
3.4 KiB
Python
84 lines
3.4 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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# Copyright (C) 2006, 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 base64
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import dns.exception
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import dns.immutable
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import dns.rdtypes.util
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class Gateway(dns.rdtypes.util.Gateway):
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name = 'IPSECKEY gateway'
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@dns.immutable.immutable
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class IPSECKEY(dns.rdata.Rdata):
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"""IPSECKEY record"""
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# see: RFC 4025
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__slots__ = ['precedence', 'gateway_type', 'algorithm', 'gateway', 'key']
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def __init__(self, rdclass, rdtype, precedence, gateway_type, algorithm,
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gateway, key):
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super().__init__(rdclass, rdtype)
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gateway = Gateway(gateway_type, gateway)
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self.precedence = self._as_uint8(precedence)
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self.gateway_type = gateway.type
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self.algorithm = self._as_uint8(algorithm)
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self.gateway = gateway.gateway
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self.key = self._as_bytes(key)
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def to_text(self, origin=None, relativize=True, **kw):
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gateway = Gateway(self.gateway_type, self.gateway).to_text(origin,
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relativize)
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return '%d %d %d %s %s' % (self.precedence, self.gateway_type,
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self.algorithm, gateway,
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dns.rdata._base64ify(self.key, **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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precedence = tok.get_uint8()
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gateway_type = tok.get_uint8()
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algorithm = tok.get_uint8()
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gateway = Gateway.from_text(gateway_type, tok, origin, relativize,
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relativize_to)
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b64 = tok.concatenate_remaining_identifiers().encode()
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key = base64.b64decode(b64)
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return cls(rdclass, rdtype, precedence, gateway_type, algorithm,
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gateway.gateway, key)
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def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
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header = struct.pack("!BBB", self.precedence, self.gateway_type,
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self.algorithm)
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file.write(header)
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Gateway(self.gateway_type, self.gateway).to_wire(file, compress,
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origin, canonicalize)
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file.write(self.key)
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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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gateway_type = header[1]
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gateway = Gateway.from_wire_parser(gateway_type, parser, origin)
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key = parser.get_remaining()
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return cls(rdclass, rdtype, header[0], gateway_type, header[2],
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gateway.gateway, key)
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