Package dns :: Package rdtypes :: Package ANY :: Module RP |
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# Source Code for Module dns.rdtypes.ANY.RP

     1  # Copyright (C) 2003-2007, 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  import dns.rdata
    18  import dns.name
    19
    20 -class RP(dns.rdata.Rdata):
    21      """RP record
    22
    23      @ivar mbox: The responsible person's mailbox
    24      @type mbox: dns.name.Name object
    25      @ivar txt: The owner name of a node with TXT records, or the root name
    26      if no TXT records are associated with this RP.
    27      @type txt: dns.name.Name object
    28      @see: RFC 1183"""
    29
    30      __slots__ = ['mbox', 'txt']
    31
    32 -    def __init__(self, rdclass, rdtype, mbox, txt):
    33          super(RP, self).__init__(rdclass, rdtype)
    34          self.mbox = mbox
    35          self.txt = txt
    36
    37 -    def to_text(self, origin=None, relativize=True, **kw):
    38          mbox = self.mbox.choose_relativity(origin, relativize)
    39          txt = self.txt.choose_relativity(origin, relativize)
    40          return "%s %s" % (str(mbox), str(txt))
    41
    42 -    def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
    43          mbox = tok.get_name()
    44          txt = tok.get_name()
    45          mbox = mbox.choose_relativity(origin, relativize)
    46          txt = txt.choose_relativity(origin, relativize)
    47          tok.get_eol()
    48          return cls(rdclass, rdtype, mbox, txt)
    49
    50      from_text = classmethod(from_text)
    51
    52 -    def to_wire(self, file, compress = None, origin = None):
    53          self.mbox.to_wire(file, None, origin)
    54          self.txt.to_wire(file, None, origin)
    55
    56 -    def to_digestable(self, origin = None):
    57          return self.mbox.to_digestable(origin) + \
    58              self.txt.to_digestable(origin)
    59
    60 -    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
    61          (mbox, cused) = dns.name.from_wire(wire[: current + rdlen],
    62                                             current)
    63          current += cused
    64          rdlen -= cused
    65          if rdlen <= 0:
    66              raise dns.exception.FormError
    67          (txt, cused) = dns.name.from_wire(wire[: current + rdlen],
    68                                            current)
    69          if cused != rdlen:
    70              raise dns.exception.FormError
    71          if not origin is None:
    72              mbox = mbox.relativize(origin)
    73              txt = txt.relativize(origin)
    74          return cls(rdclass, rdtype, mbox, txt)
    75
    76      from_wire = classmethod(from_wire)
    77
    78 -    def choose_relativity(self, origin = None, relativize = True):
    79          self.mbox = self.mbox.choose_relativity(origin, relativize)
    80          self.txt = self.txt.choose_relativity(origin, relativize)
    81
    82 -    def _cmp(self, other):
    83          v = cmp(self.mbox, other.mbox)
    84          if v == 0:
    85              v = cmp(self.txt, other.txt)
    86          return v
    87