Package dns :: Package rdtypes :: Package IN :: Module A
[hide private]
[frames] | no frames]

Source Code for Module dns.rdtypes.IN.A

 1  # Copyright (C) 2003-2007, 2009-2011 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   
16  import dns.exception 
17  import dns.ipv4 
18  import dns.rdata 
19  import dns.tokenizer 
20   
21 -class A(dns.rdata.Rdata):
22 """A record. 23 24 @ivar address: an IPv4 address 25 @type address: string (in the standard "dotted quad" format)""" 26 27 __slots__ = ['address'] 28
29 - def __init__(self, rdclass, rdtype, address):
30 super(A, self).__init__(rdclass, rdtype) 31 # check that it's OK 32 junk = dns.ipv4.inet_aton(address) 33 self.address = address
34
35 - def to_text(self, origin=None, relativize=True, **kw):
36 return self.address
37
38 - def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
39 address = tok.get_identifier() 40 tok.get_eol() 41 return cls(rdclass, rdtype, address)
42 43 from_text = classmethod(from_text) 44
45 - def to_wire(self, file, compress = None, origin = None):
46 file.write(dns.ipv4.inet_aton(self.address))
47
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)
51 52 from_wire = classmethod(from_wire) 53
54 - def _cmp(self, other):
55 sa = dns.ipv4.inet_aton(self.address) 56 oa = dns.ipv4.inet_aton(other.address) 57 return cmp(sa, oa)
58