From 4bbc3ff037026c72f3249f59c1b5af69a6ad6d69 Mon Sep 17 00:00:00 2001 From: Jelmer Vernooij Date: Mon, 29 Mar 2010 16:08:11 +0200 Subject: s4-python: Move dnspython to lib/, like the other Python modules This also avoids it from being installed if it's already present on the system. --- lib/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py | 88 +++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 lib/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py (limited to 'lib/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py') diff --git a/lib/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py b/lib/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py new file mode 100644 index 0000000000..ec91e5e85c --- /dev/null +++ b/lib/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py @@ -0,0 +1,88 @@ +# Copyright (C) 2004-2007, 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.rdata + +class NSEC3PARAM(dns.rdata.Rdata): + """NSEC3PARAM record + + @ivar algorithm: the hash algorithm number + @type algorithm: int + @ivar flags: the flags + @type flags: int + @ivar iterations: the number of iterations + @type iterations: int + @ivar salt: the salt + @type salt: string""" + + __slots__ = ['algorithm', 'flags', 'iterations', 'salt'] + + def __init__(self, rdclass, rdtype, algorithm, flags, iterations, salt): + super(NSEC3PARAM, self).__init__(rdclass, rdtype) + self.algorithm = algorithm + self.flags = flags + self.iterations = iterations + self.salt = salt + + def to_text(self, origin=None, relativize=True, **kw): + if self.salt == '': + salt = '-' + else: + salt = self.salt.encode('hex-codec') + return '%u %u %u %s' % (self.algorithm, self.flags, self.iterations, salt) + + def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): + algorithm = tok.get_uint8() + flags = tok.get_uint8() + iterations = tok.get_uint16() + salt = tok.get_string() + if salt == '-': + salt = '' + else: + salt = salt.decode('hex-codec') + return cls(rdclass, rdtype, algorithm, flags, iterations, salt) + + from_text = classmethod(from_text) + + def to_wire(self, file, compress = None, origin = None): + l = len(self.salt) + file.write(struct.pack("!BBHB", self.algorithm, self.flags, + self.iterations, l)) + file.write(self.salt) + + def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): + (algorithm, flags, iterations, slen) = struct.unpack('!BBHB', + wire[current : current + 5]) + current += 5 + rdlen -= 5 + salt = wire[current : current + slen] + current += slen + rdlen -= slen + if rdlen != 0: + raise dns.exception.FormError + return cls(rdclass, rdtype, algorithm, flags, iterations, salt) + + from_wire = classmethod(from_wire) + + def _cmp(self, other): + b1 = cStringIO.StringIO() + self.to_wire(b1) + b2 = cStringIO.StringIO() + other.to_wire(b2) + return cmp(b1.getvalue(), b2.getvalue()) -- cgit