diff options
author | Andrew Tridgell <tridge@samba.org> | 2010-03-05 11:45:40 +1100 |
---|---|---|
committer | Andrew Tridgell <tridge@samba.org> | 2010-03-05 11:54:36 +1100 |
commit | 7d86257d54cb59d016a051b91bdee62ab2f8a0d5 (patch) | |
tree | ca682263ae2dffeaf58134e47080078864df64d4 /source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py | |
parent | f3ca7a4696cadbb74f41dd71ef9336445682d406 (diff) | |
download | samba-7d86257d54cb59d016a051b91bdee62ab2f8a0d5.tar.gz samba-7d86257d54cb59d016a051b91bdee62ab2f8a0d5.tar.bz2 samba-7d86257d54cb59d016a051b91bdee62ab2f8a0d5.zip |
s4-python: import a copy of the python dns library
This library is not installed on enough systems for us to rely
on it being available. We use the system copy if possible, and
fallback to this local copy
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Diffstat (limited to 'source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py')
-rw-r--r-- | source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NSEC3PARAM.py new file mode 100644 index 0000000000..ec91e5e85c --- /dev/null +++ b/source4/scripting/python/samba_external/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()) |