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

 1  # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc. 
 2  # 
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 4  # documentation for any purpose with or without fee is hereby granted, 
 5  # provided that the above copyright notice and this permission notice 
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15   
16  import binascii 
17   
18  import dns.exception 
19  import dns.rdata 
20  import dns.tokenizer 
21 22 23 -class NSAP(dns.rdata.Rdata):
24 25 """NSAP record. 26 27 @ivar address: a NASP 28 @type address: string 29 @see: RFC 1706""" 30 31 __slots__ = ['address'] 32
33 - def __init__(self, rdclass, rdtype, address):
34 super(NSAP, self).__init__(rdclass, rdtype) 35 self.address = address
36
37 - def to_text(self, origin=None, relativize=True, **kw):
38 return "0x%s" % binascii.hexlify(self.address).decode()
39 40 @classmethod
41 - def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
42 address = tok.get_string() 43 tok.get_eol() 44 if address[0:2] != '0x': 45 raise dns.exception.SyntaxError('string does not start with 0x') 46 address = address[2:].replace('.', '') 47 if len(address) % 2 != 0: 48 raise dns.exception.SyntaxError('hexstring has odd length') 49 address = binascii.unhexlify(address.encode()) 50 return cls(rdclass, rdtype, address)
51
52 - def to_wire(self, file, compress=None, origin=None):
53 file.write(self.address)
54 55 @classmethod
56 - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
57 address = wire[current: current + rdlen].unwrap() 58 return cls(rdclass, rdtype, address)
59