mirror of https://github.com/morpheus65535/bazarr
100 lines
3.6 KiB
Python
100 lines
3.6 KiB
Python
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
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# Copyright (C) 2003-2007, 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 dns.exception
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import dns.immutable
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import dns.name
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import dns.rdata
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import dns.rdtypes.util
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def _write_string(file, s):
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l = len(s)
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assert l < 256
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file.write(struct.pack('!B', l))
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file.write(s)
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@dns.immutable.immutable
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class NAPTR(dns.rdata.Rdata):
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"""NAPTR record"""
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# see: RFC 3403
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__slots__ = ['order', 'preference', 'flags', 'service', 'regexp',
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'replacement']
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def __init__(self, rdclass, rdtype, order, preference, flags, service,
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regexp, replacement):
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super().__init__(rdclass, rdtype)
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self.flags = self._as_bytes(flags, True, 255)
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self.service = self._as_bytes(service, True, 255)
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self.regexp = self._as_bytes(regexp, True, 255)
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self.order = self._as_uint16(order)
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self.preference = self._as_uint16(preference)
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self.replacement = self._as_name(replacement)
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def to_text(self, origin=None, relativize=True, **kw):
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replacement = self.replacement.choose_relativity(origin, relativize)
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return '%d %d "%s" "%s" "%s" %s' % \
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(self.order, self.preference,
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dns.rdata._escapify(self.flags),
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dns.rdata._escapify(self.service),
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dns.rdata._escapify(self.regexp),
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replacement)
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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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order = tok.get_uint16()
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preference = tok.get_uint16()
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flags = tok.get_string()
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service = tok.get_string()
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regexp = tok.get_string()
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replacement = tok.get_name(origin, relativize, relativize_to)
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return cls(rdclass, rdtype, order, preference, flags, service,
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regexp, replacement)
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def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
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two_ints = struct.pack("!HH", self.order, self.preference)
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file.write(two_ints)
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_write_string(file, self.flags)
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_write_string(file, self.service)
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_write_string(file, self.regexp)
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self.replacement.to_wire(file, compress, origin, canonicalize)
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@classmethod
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def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
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(order, preference) = parser.get_struct('!HH')
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strings = []
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for _ in range(3):
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s = parser.get_counted_bytes()
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strings.append(s)
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replacement = parser.get_name(origin)
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return cls(rdclass, rdtype, order, preference, strings[0], strings[1],
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strings[2], replacement)
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def _processing_priority(self):
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return (self.order, self.preference)
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@classmethod
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def _processing_order(cls, iterable):
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return dns.rdtypes.util.priority_processing_order(iterable)
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