sdk/platform-tools/systrace/catapult/telemetry/third_party/web-page-replay/third_party/dns/rdtypes/IN/DHCID.py

   1 # Copyright (C) 2006, 2007, 2009, 2010 Nominum, Inc.
   2 #
   3 # Permission to use, copy, modify, and distribute this software and its
   4 # documentation for any purpose with or without fee is hereby granted,
   5 # provided that the above copyright notice and this permission notice
   6 # appear in all copies.
   7 #
   8 # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
   9 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
  11 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  14 # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15
  16 import dns.exception
  17
  18 class DHCID(dns.rdata.Rdata):
  19     """DHCID record
  20
  21     @ivar data: the data (the content of the RR is opaque as far as the
  22     DNS is concerned)
  23     @type data: string
  24     @see: RFC 4701"""
  25
  26     __slots__ = ['data']
  27
  28     def __init__(self, rdclass, rdtype, data):
  29         super(DHCID, self).__init__(rdclass, rdtype)
  30         self.data = data
  31
  32     def to_text(self, origin=None, relativize=True, **kw):
  33         return dns.rdata._base64ify(self.data)
  34
  35     def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
  36         chunks = []
  37         while 1:
  38             t = tok.get().unescape()
  39             if t.is_eol_or_eof():
  40                 break
  41             if not t.is_identifier():
  42                 raise dns.exception.SyntaxError
  43             chunks.append(t.value)
  44         b64 = ''.join(chunks)
  45         data = b64.decode('base64_codec')
  46         return cls(rdclass, rdtype, data)
  47
  48     from_text = classmethod(from_text)
  49
  50     def to_wire(self, file, compress = None, origin = None):
  51         file.write(self.data)
  52
  53     def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
  54         data = wire[current : current + rdlen]
  55         return cls(rdclass, rdtype, data)
  56
  57     from_wire = classmethod(from_wire)
  58
  59     def _cmp(self, other):
  60         return cmp(self.data, other.data)