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# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import dns.exception
import dns.rdata
import dns.name
class RP(dns.rdata.Rdata):
"""RP record
@ivar mbox: The responsible person's mailbox
@type mbox: dns.name.Name object
@ivar txt: The owner name of a node with TXT records, or the root name
if no TXT records are associated with this RP.
@type txt: dns.name.Name object
@see: RFC 1183"""
__slots__ = ['mbox', 'txt']
def __init__(self, rdclass, rdtype, mbox, txt):
super(RP, self).__init__(rdclass, rdtype)
self.mbox = mbox
self.txt = txt
def to_text(self, origin=None, relativize=True, **kw):
mbox = self.mbox.choose_relativity(origin, relativize)
txt = self.txt.choose_relativity(origin, relativize)
return "%s %s" % (str(mbox), str(txt))
def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
mbox = tok.get_name()
txt = tok.get_name()
mbox = mbox.choose_relativity(origin, relativize)
txt = txt.choose_relativity(origin, relativize)
tok.get_eol()
return cls(rdclass, rdtype, mbox, txt)
from_text = classmethod(from_text)
def to_wire(self, file, compress = None, origin = None):
self.mbox.to_wire(file, None, origin)
self.txt.to_wire(file, None, origin)
def to_digestable(self, origin = None):
return self.mbox.to_digestable(origin) + \
self.txt.to_digestable(origin)
def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
(mbox, cused) = dns.name.from_wire(wire[: current + rdlen],
current)
current += cused
rdlen -= cused
if rdlen <= 0:
raise dns.exception.FormError
(txt, cused) = dns.name.from_wire(wire[: current + rdlen],
current)
if cused != rdlen:
raise dns.exception.FormError
if not origin is None:
mbox = mbox.relativize(origin)
txt = txt.relativize(origin)
return cls(rdclass, rdtype, mbox, txt)
from_wire = classmethod(from_wire)
def choose_relativity(self, origin = None, relativize = True):
self.mbox = self.mbox.choose_relativity(origin, relativize)
self.txt = self.txt.choose_relativity(origin, relativize)
def _cmp(self, other):
v = cmp(self.mbox, other.mbox)
if v == 0:
v = cmp(self.txt, other.txt)
return v