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.rdata 1833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckimport dns.tokenizer 1933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reckclass ISDN(dns.rdata.Rdata): 2133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck """ISDN record 2233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @ivar address: the ISDN address 2433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @type address: string 2533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @ivar subaddress: the ISDN subaddress (or '' if not present) 2633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @type subaddress: string 2733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck @see: RFC 1183""" 2833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 2933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck __slots__ = ['address', 'subaddress'] 3033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 3133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def __init__(self, rdclass, rdtype, address, subaddress): 3233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck super(ISDN, self).__init__(rdclass, rdtype) 3333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck self.address = address 3433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck self.subaddress = subaddress 3533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 3633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def to_text(self, origin=None, relativize=True, **kw): 3733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if self.subaddress: 3833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return '"%s" "%s"' % (dns.rdata._escapify(self.address), 3933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck dns.rdata._escapify(self.subaddress)) 4033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck else: 4133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return '"%s"' % dns.rdata._escapify(self.address) 4233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 4333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): 4433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck address = tok.get_string() 4533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck t = tok.get() 4633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if not t.is_eol_or_eof(): 4733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck tok.unget(t) 4833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck subaddress = tok.get_string() 4933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck else: 5033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck tok.unget(t) 5133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck subaddress = '' 5233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck tok.get_eol() 5333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return cls(rdclass, rdtype, address, subaddress) 5433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 5533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck from_text = classmethod(from_text) 5633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 5733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def to_wire(self, file, compress = None, origin = None): 5833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck l = len(self.address) 5933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck assert l < 256 6033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck byte = chr(l) 6133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck file.write(byte) 6233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck file.write(self.address) 6333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck l = len(self.subaddress) 6433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if l > 0: 6533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck assert l < 256 6633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck byte = chr(l) 6733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck file.write(byte) 6833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck file.write(self.subaddress) 6933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 7033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): 7133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck l = ord(wire[current]) 7233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck current += 1 7333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck rdlen -= 1 7433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if l > rdlen: 7533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck raise dns.exception.FormError 7633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck address = wire[current : current + l] 7733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck current += l 7833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck rdlen -= l 7933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if rdlen > 0: 8033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck l = ord(wire[current]) 8133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck current += 1 8233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck rdlen -= 1 8333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if l != rdlen: 8433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck raise dns.exception.FormError 8533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck subaddress = wire[current : current + l] 8633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck else: 8733259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck subaddress = '' 8833259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return cls(rdclass, rdtype, address, subaddress) 8933259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 9033259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck from_wire = classmethod(from_wire) 9133259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck 9233259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck def _cmp(self, other): 9333259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck v = cmp(self.address, other.address) 9433259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck if v == 0: 9533259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck v = cmp(self.subaddress, other.subaddress) 9633259e44c8229f70ffe0cf3bb5ca9375c4feb2f9John Reck return v 97