/usr/lib/python2.7/dist-packages/linkcheck_dns/dns/rdtypes/ANY/HIP.py is in linkchecker 9.3-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | # Copyright (C) 2010, 2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import cStringIO
import string
import struct
import dns.exception
import dns.rdata
import dns.rdatatype
class HIP(dns.rdata.Rdata):
"""HIP record
@ivar hit: the host identity tag
@type hit: string
@ivar algorithm: the public key cryptographic algorithm
@type algorithm: int
@ivar key: the public key
@type key: string
@ivar servers: the rendezvous servers
@type servers: list of dns.name.Name objects
@see: RFC 5205"""
__slots__ = ['hit', 'algorithm', 'key', 'servers']
def __init__(self, rdclass, rdtype, hit, algorithm, key, servers):
super(HIP, self).__init__(rdclass, rdtype)
self.hit = hit
self.algorithm = algorithm
self.key = key
self.servers = servers
def to_text(self, origin=None, relativize=True, **kw):
hit = self.hit.encode('hex-codec')
key = self.key.encode('base64-codec').replace('\n', '')
text = ''
servers = []
for server in self.servers:
servers.append(str(server.choose_relativity(origin, relativize)))
if len(servers) > 0:
text += (' ' + ' '.join(servers))
return '%u %s %s%s' % (self.algorithm, hit, key, text)
def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
algorithm = tok.get_uint8()
hit = tok.get_string().decode('hex-codec')
if len(hit) > 255:
raise dns.exception.SyntaxError("HIT too long")
key = tok.get_string().decode('base64-codec')
servers = []
while 1:
token = tok.get()
if token.is_eol_or_eof():
break
server = dns.name.from_text(token.value, origin)
server.choose_relativity(origin, relativize)
servers.append(server)
return cls(rdclass, rdtype, hit, algorithm, key, servers)
from_text = classmethod(from_text)
def to_wire(self, file, compress = None, origin = None):
lh = len(self.hit)
lk = len(self.key)
file.write(struct.pack("!BBH", lh, self.algorithm, lk))
file.write(self.hit)
file.write(self.key)
for server in self.servers:
server.to_wire(file, None, origin)
def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
(lh, algorithm, lk) = struct.unpack('!BBH',
wire[current : current + 4])
current += 4
rdlen -= 4
hit = wire[current : current + lh].unwrap()
current += lh
rdlen -= lh
key = wire[current : current + lk].unwrap()
current += lk
rdlen -= lk
servers = []
while rdlen > 0:
(server, cused) = dns.name.from_wire(wire[: current + rdlen],
current)
current += cused
rdlen -= cused
if not origin is None:
server = server.relativize(origin)
servers.append(server)
return cls(rdclass, rdtype, hit, algorithm, key, servers)
from_wire = classmethod(from_wire)
def choose_relativity(self, origin = None, relativize = True):
servers = []
for server in self.servers:
server = server.choose_relativity(origin, relativize)
servers.append(server)
self.servers = servers
def _cmp(self, other):
b1 = cStringIO.StringIO()
lh = len(self.hit)
lk = len(self.key)
b1.write(struct.pack("!BBH", lh, self.algorithm, lk))
b1.write(self.hit)
b1.write(self.key)
b2 = cStringIO.StringIO()
lh = len(other.hit)
lk = len(other.key)
b2.write(struct.pack("!BBH", lh, other.algorithm, lk))
b2.write(other.hit)
b2.write(other.key)
v = cmp(b1.getvalue(), b2.getvalue())
if v != 0:
return v
ls = len(self.servers)
lo = len(other.servers)
count = min(ls, lo)
i = 0
while i < count:
v = cmp(self.servers[i], other.servers[i])
if v != 0:
return v
i += 1
return ls - lo
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