1 # Copyright (C) 2003-2007, 2009, 2010 Nominum, Inc.
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.
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.
21 class A(dns.rdata.Rdata):
24 @ivar address: an IPv4 address
25 @type address: string (in the standard "dotted quad" format)"""
27 __slots__ = ['address']
29 def __init__(self, rdclass, rdtype, address):
30 super(A, self).__init__(rdclass, rdtype)
32 junk = dns.ipv4.inet_aton(address)
33 self.address = address
35 def to_text(self, origin=None, relativize=True, **kw):
38 def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
39 address = tok.get_identifier()
41 return cls(rdclass, rdtype, address)
43 from_text = classmethod(from_text)
45 def to_wire(self, file, compress = None, origin = None):
46 file.write(dns.ipv4.inet_aton(self.address))
48 def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
49 address = dns.ipv4.inet_ntoa(wire[current : current + rdlen])
50 return cls(rdclass, rdtype, address)
52 from_wire = classmethod(from_wire)
54 def _cmp(self, other):
55 sa = dns.ipv4.inet_aton(self.address)
56 oa = dns.ipv4.inet_aton(other.address)