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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.inet
18import dns.rdata
19import dns.tokenizer
20
21class AAAA(dns.rdata.Rdata):
22    """AAAA record.
23
24    @ivar address: an IPv6 address
25    @type address: string (in the standard IPv6 format)"""
26
27    __slots__ = ['address']
28
29    def __init__(self, rdclass, rdtype, address):
30        super(AAAA, self).__init__(rdclass, rdtype)
31        # check that it's OK
32        junk = dns.inet.inet_pton(dns.inet.AF_INET6, 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.inet.inet_pton(dns.inet.AF_INET6, self.address))
47
48    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
49        address = dns.inet.inet_ntop(dns.inet.AF_INET6,
50                                     wire[current : current + rdlen])
51        return cls(rdclass, rdtype, address)
52
53    from_wire = classmethod(from_wire)
54
55    def _cmp(self, other):
56        sa = dns.inet.inet_pton(dns.inet.AF_INET6, self.address)
57        oa = dns.inet.inet_pton(dns.inet.AF_INET6, other.address)
58        return cmp(sa, oa)
59