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 16import dns.exception 17import dns.rdata 18import dns.name 19 20class 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