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16 import struct
17
18 import dns.rdata
19 import dns.rdatatype
20 import dns.util
21
22 -class SSHFP(dns.rdata.Rdata):
23 """SSHFP record
24
25 @ivar algorithm: the algorithm
26 @type algorithm: int
27 @ivar fp_type: the digest type
28 @type fp_type: int
29 @ivar fingerprint: the fingerprint
30 @type fingerprint: bytes
31 @see: draft-ietf-secsh-dns-05.txt"""
32
33 __slots__ = ['algorithm', 'fp_type', 'fingerprint']
34
35 - def __init__(self, rdclass, rdtype, algorithm, fp_type,
36 fingerprint):
41
42 - def to_text(self, origin=None, relativize=True, **kw):
43 return '%d %d %s' % (self.algorithm,
44 self.fp_type,
45 dns.rdata._hexify(self.fingerprint,
46 chunksize=128))
47
48 - def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
49 algorithm = tok.get_uint8()
50 fp_type = tok.get_uint8()
51 chunks = []
52 while 1:
53 t = tok.get().unescape()
54 if t.is_eol_or_eof():
55 break
56 if not t.is_identifier():
57 raise dns.exception.SyntaxError
58 chunks.append(t.value)
59 hex = ''.join(chunks)
60 fingerprint = bytes.fromhex(hex)
61 return cls(rdclass, rdtype, algorithm, fp_type, fingerprint)
62
63 from_text = classmethod(from_text)
64
65 - def to_wire(self, file, compress = None, origin = None):
69
70 - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
71 header = struct.unpack("!BB", wire[current : current + 2])
72 current += 2
73 rdlen -= 2
74 fingerprint = wire[current : current + rdlen].unwrap()
75 return cls(rdclass, rdtype, header[0], header[1], fingerprint)
76
77 from_wire = classmethod(from_wire)
78
79 - def _cmp(self, other):
86