diff options
Diffstat (limited to 'source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NXT.py')
-rw-r--r-- | source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NXT.py | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NXT.py b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NXT.py new file mode 100644 index 0000000000..99ae9b9dff --- /dev/null +++ b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/ANY/NXT.py @@ -0,0 +1,99 @@ +# Copyright (C) 2003-2007, 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 dns.exception +import dns.rdata +import dns.rdatatype +import dns.name + +class NXT(dns.rdata.Rdata): + """NXT record + + @ivar next: the next name + @type next: dns.name.Name object + @ivar bitmap: the type bitmap + @type bitmap: string + @see: RFC 2535""" + + __slots__ = ['next', 'bitmap'] + + def __init__(self, rdclass, rdtype, next, bitmap): + super(NXT, self).__init__(rdclass, rdtype) + self.next = next + self.bitmap = bitmap + + def to_text(self, origin=None, relativize=True, **kw): + next = self.next.choose_relativity(origin, relativize) + bits = [] + for i in xrange(0, len(self.bitmap)): + byte = ord(self.bitmap[i]) + for j in xrange(0, 8): + if byte & (0x80 >> j): + bits.append(dns.rdatatype.to_text(i * 8 + j)) + text = ' '.join(bits) + return '%s %s' % (next, text) + + def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): + next = tok.get_name() + next = next.choose_relativity(origin, relativize) + bitmap = ['\x00', '\x00', '\x00', '\x00', + '\x00', '\x00', '\x00', '\x00', + '\x00', '\x00', '\x00', '\x00', + '\x00', '\x00', '\x00', '\x00' ] + while 1: + token = tok.get().unescape() + if token.is_eol_or_eof(): + break + if token.value.isdigit(): + nrdtype = int(token.value) + else: + nrdtype = dns.rdatatype.from_text(token.value) + if nrdtype == 0: + raise dns.exception.SyntaxError("NXT with bit 0") + if nrdtype > 127: + raise dns.exception.SyntaxError("NXT with bit > 127") + i = nrdtype // 8 + bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (nrdtype % 8))) + bitmap = dns.rdata._truncate_bitmap(bitmap) + return cls(rdclass, rdtype, next, bitmap) + + from_text = classmethod(from_text) + + def to_wire(self, file, compress = None, origin = None): + self.next.to_wire(file, None, origin) + file.write(self.bitmap) + + def to_digestable(self, origin = None): + return self.next.to_digestable(origin) + self.bitmap + + def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): + (next, cused) = dns.name.from_wire(wire[: current + rdlen], current) + current += cused + rdlen -= cused + bitmap = wire[current : current + rdlen] + if not origin is None: + next = next.relativize(origin) + return cls(rdclass, rdtype, next, bitmap) + + from_wire = classmethod(from_wire) + + def choose_relativity(self, origin = None, relativize = True): + self.next = self.next.choose_relativity(origin, relativize) + + def _cmp(self, other): + v = cmp(self.next, other.next) + if v == 0: + v = cmp(self.bitmap, other.bitmap) + return v |