Package dns :: Package rdtypes :: Package IN :: Module DHCID |
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# Source Code for Module dns.rdtypes.IN.DHCID

     1  # Copyright (C) 2006, 2007, 2009-2011 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].unwrap()
    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)
    61