+++ /dev/null
-# 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 cStringIO
-import struct
-
-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 not gateway is None:
- raise SyntaxError('invalid gateway for gateway type 0')
- gateway = None
- elif gateway_type == 1:
- # check that it's OK
- junk = dns.inet.inet_pton(dns.inet.AF_INET, gateway)
- elif gateway_type == 2:
- # check that it's OK
- junk = 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))
-
- 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)
- b64 = ''.join(chunks)
- key = b64.decode('base64_codec')
- return cls(rdclass, rdtype, precedence, gateway_type, algorithm,
- gateway, key)
-
- from_text = classmethod(from_text)
-
- 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)
-
- 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)
-
- from_wire = classmethod(from_wire)
-
- def _cmp(self, other):
- f = cStringIO.StringIO()
- self.to_wire(f)
- wire1 = f.getvalue()
- f.seek(0)
- f.truncate()
- other.to_wire(f)
- wire2 = f.getvalue()
- f.close()
-
- return cmp(wire1, wire2)
git.samba.org / vlendec / samba-autobuild / .git / blobdiff