--- /dev/null
+# Copyright (C) 2006, 2007, 2009, 2010 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]
+ 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 / idra / samba.git / blobdiff