Package dns :: Package rdtypes :: Package IN :: Module NSAP
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Source Code for Module dns.rdtypes.IN.NSAP

 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 
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17   
18  import binascii 
19   
20  import dns.exception 
21  import dns.rdata 
22  import dns.tokenizer 
23 24 25 -class NSAP(dns.rdata.Rdata):
26 27 """NSAP record. 28 29 @ivar address: a NASP 30 @type address: string 31 @see: RFC 1706""" 32 33 __slots__ = ['address'] 34
35 - def __init__(self, rdclass, rdtype, address):
36 super(NSAP, self).__init__(rdclass, rdtype) 37 self.address = address
38
39 - def to_text(self, origin=None, relativize=True, **kw):
40 return "0x%s" % binascii.hexlify(self.address).decode()
41 42 @classmethod
43 - def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
44 address = tok.get_string() 45 tok.get_eol() 46 if address[0:2] != '0x': 47 raise dns.exception.SyntaxError('string does not start with 0x') 48 address = address[2:].replace('.', '') 49 if len(address) % 2 != 0: 50 raise dns.exception.SyntaxError('hexstring has odd length') 51 address = binascii.unhexlify(address.encode()) 52 return cls(rdclass, rdtype, address)
53
54 - def to_wire(self, file, compress=None, origin=None):
55 file.write(self.address)
56 57 @classmethod
58 - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
59 address = wire[current: current + rdlen].unwrap() 60 return cls(rdclass, rdtype, address)
61