133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# Copyright (C) 2003-2007, 2009, 2010 Nominum, Inc. 233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# 333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# Permission to use, copy, modify, and distribute this software and its 433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# documentation for any purpose with or without fee is hereby granted, 533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# provided that the above copyright notice and this permission notice 633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# appear in all copies. 733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# 833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES 933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 1033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR 1133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 1233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 1333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 1433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 1533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 1633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport dns.exception 1733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport dns.ipv4 1833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport dns.rdata 1933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport dns.tokenizer 2033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckclass A(dns.rdata.Rdata): 2233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck """A record. 2333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @ivar address: an IPv4 address 2533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @type address: string (in the standard "dotted quad" format)""" 2633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck __slots__ = ['address'] 2833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def __init__(self, rdclass, rdtype, address): 3033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck super(A, self).__init__(rdclass, rdtype) 3133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck # check that it's OK 3233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck junk = dns.ipv4.inet_aton(address) 3333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck self.address = address 3433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 3533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def to_text(self, origin=None, relativize=True, **kw): 3633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return self.address 3733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 3833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): 3933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck address = tok.get_identifier() 4033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck tok.get_eol() 4133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return cls(rdclass, rdtype, address) 4233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 4333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck from_text = classmethod(from_text) 4433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 4533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def to_wire(self, file, compress = None, origin = None): 4633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck file.write(dns.ipv4.inet_aton(self.address)) 4733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 4833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): 4933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck address = dns.ipv4.inet_ntoa(wire[current : current + rdlen]) 5033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return cls(rdclass, rdtype, address) 5133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 5233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck from_wire = classmethod(from_wire) 5333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 5433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def _cmp(self, other): 5533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck sa = dns.ipv4.inet_aton(self.address) 5633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck oa = dns.ipv4.inet_aton(other.address) 5733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return cmp(sa, oa) 58