1# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license 2 3# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc. 4# 5# Permission to use, copy, modify, and distribute this software and its 6# documentation for any purpose with or without fee is hereby granted, 7# provided that the above copyright notice and this permission notice 8# appear in all copies. 9# 10# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES 11# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR 13# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 16# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 18import dns.exception 19import dns.ipv4 20import dns.rdata 21import dns.tokenizer 22 23 24class A(dns.rdata.Rdata): 25 26 """A record.""" 27 28 __slots__ = ['address'] 29 30 def __init__(self, rdclass, rdtype, address): 31 super().__init__(rdclass, rdtype) 32 # check that it's OK 33 dns.ipv4.inet_aton(address) 34 object.__setattr__(self, 'address', address) 35 36 def to_text(self, origin=None, relativize=True, **kw): 37 return self.address 38 39 @classmethod 40 def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True, 41 relativize_to=None): 42 address = tok.get_identifier() 43 tok.get_eol() 44 return cls(rdclass, rdtype, address) 45 46 def _to_wire(self, file, compress=None, origin=None, canonicalize=False): 47 file.write(dns.ipv4.inet_aton(self.address)) 48 49 @classmethod 50 def from_wire_parser(cls, rdclass, rdtype, parser, origin=None): 51 address = dns.ipv4.inet_ntoa(parser.get_remaining()) 52 return cls(rdclass, rdtype, address) 53