/usr/lib/python2.7/dist-packages/eventlet/support/dns/rdtypes/IN/IPSECKEY.py is in python-eventlet 0.20.0-4.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | # Copyright (C) 2006, 2007, 2009-2011 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 struct
import base64
import dns.exception
import dns.inet
import dns.name
class IPSECKEY(dns.rdata.Rdata):
"""IPSECKEY record
@ivar precedence: the precedence for this key data
@type precedence: int
@ivar gateway_type: the gateway type
@type gateway_type: int
@ivar algorithm: the algorithm to use
@type algorithm: int
@ivar gateway: the public key
@type gateway: None, IPv4 address, IPV6 address, or domain name
@ivar key: the public key
@type key: string
@see: RFC 4025"""
__slots__ = ['precedence', 'gateway_type', 'algorithm', 'gateway', 'key']
def __init__(self, rdclass, rdtype, precedence, gateway_type, algorithm,
gateway, key):
super(IPSECKEY, self).__init__(rdclass, rdtype)
if gateway_type == 0:
if gateway != '.' and gateway is not None:
raise SyntaxError('invalid gateway for gateway type 0')
gateway = None
elif gateway_type == 1:
# check that it's OK
dns.inet.inet_pton(dns.inet.AF_INET, gateway)
elif gateway_type == 2:
# check that it's OK
dns.inet.inet_pton(dns.inet.AF_INET6, gateway)
elif gateway_type == 3:
pass
else:
raise SyntaxError(
'invalid IPSECKEY gateway type: %d' % gateway_type)
self.precedence = precedence
self.gateway_type = gateway_type
self.algorithm = algorithm
self.gateway = gateway
self.key = key
def to_text(self, origin=None, relativize=True, **kw):
if self.gateway_type == 0:
gateway = '.'
elif self.gateway_type == 1:
gateway = self.gateway
elif self.gateway_type == 2:
gateway = self.gateway
elif self.gateway_type == 3:
gateway = str(self.gateway.choose_relativity(origin, relativize))
else:
raise ValueError('invalid gateway type')
return '%d %d %d %s %s' % (self.precedence, self.gateway_type,
self.algorithm, gateway,
dns.rdata._base64ify(self.key))
@classmethod
def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
precedence = tok.get_uint8()
gateway_type = tok.get_uint8()
algorithm = tok.get_uint8()
if gateway_type == 3:
gateway = tok.get_name().choose_relativity(origin, relativize)
else:
gateway = tok.get_string()
chunks = []
while 1:
t = tok.get().unescape()
if t.is_eol_or_eof():
break
if not t.is_identifier():
raise dns.exception.SyntaxError
chunks.append(t.value.encode())
b64 = b''.join(chunks)
key = base64.b64decode(b64)
return cls(rdclass, rdtype, precedence, gateway_type, algorithm,
gateway, key)
def to_wire(self, file, compress=None, origin=None):
header = struct.pack("!BBB", self.precedence, self.gateway_type,
self.algorithm)
file.write(header)
if self.gateway_type == 0:
pass
elif self.gateway_type == 1:
file.write(dns.inet.inet_pton(dns.inet.AF_INET, self.gateway))
elif self.gateway_type == 2:
file.write(dns.inet.inet_pton(dns.inet.AF_INET6, self.gateway))
elif self.gateway_type == 3:
self.gateway.to_wire(file, None, origin)
else:
raise ValueError('invalid gateway type')
file.write(self.key)
@classmethod
def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
if rdlen < 3:
raise dns.exception.FormError
header = struct.unpack('!BBB', wire[current: current + 3])
gateway_type = header[1]
current += 3
rdlen -= 3
if gateway_type == 0:
gateway = None
elif gateway_type == 1:
gateway = dns.inet.inet_ntop(dns.inet.AF_INET,
wire[current: current + 4])
current += 4
rdlen -= 4
elif gateway_type == 2:
gateway = dns.inet.inet_ntop(dns.inet.AF_INET6,
wire[current: current + 16])
current += 16
rdlen -= 16
elif gateway_type == 3:
(gateway, cused) = dns.name.from_wire(wire[: current + rdlen],
current)
current += cused
rdlen -= cused
else:
raise dns.exception.FormError('invalid IPSECKEY gateway type')
key = wire[current: current + rdlen].unwrap()
return cls(rdclass, rdtype, header[0], gateway_type, header[2],
gateway, key)
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