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9 li~ e8Y.1h߿ hai~ e8Y.1h serio:ty06pr00id00ex00 # l4( ڔҁnnţ e ? # Copyright (C) 2003-2007, 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. """DNS Zones.""" from __future__ import generators import sys import re import dns.exception import dns.name import dns.node import dns.rdataclass import dns.rdatatype import dns.rdata import dns.rrset import dns.tokenizer import dns.ttl import dns.grange try: from cStringIO import StringIO except ImportError: from io import StringIO class BadZone(dns.exception.DNSException): """The zone is malformed.""" pass class NoSOA(BadZone): """The zone has no SOA RR at its origin.""" pass class NoNS(BadZone): """The zone has no NS RRset at its origin.""" pass class UnknownOrigin(BadZone): """The zone's origin is unknown.""" pass class Zone(object): """A DNS zone. A Zone is a mapping from names to nodes. The zone object may be treated like a Python dictionary, e.g. zone[name] will retrieve the node associated with that name. The I{name} may be a dns.name.Name object, or it may be a string. In the either case, if the name is relative it is treated as relative to the origin of the zone. @ivar rdclass: The zone's rdata class; the default is class IN. @type rdclass: int @ivar origin: The origin of the zone. @type origin: dns.name.Name object @ivar nodes: A dictionary mapping the names of nodes in the zone to the nodes themselves. @type nodes: dict @ivar relativize: should names in the zone be relativized? @type relativize: bool @cvar node_factory: the factory used to create a new node @type node_factory: class or callable """ node_factory = dns.node.Node __slots__ = ['rdclass', 'origin', 'nodes', 'relativize'] def __init__(self, origin, rdclass=dns.rdataclass.IN, relativize=True): """Initialize a zone object. @param origin: The origin of the zone. @type origin: dns.name.Name object @param rdclass: The zone's rdata class; the default is class IN. @type rdclass: int""" self.rdclass = rdclass self.origin = origin self.nodes = {} self.relativize = relativize def __eq__(self, other): """Two zones are equal if they have the same origin, class, and nodes. @rtype: bool """ if not isinstance(other, Zone): return False if self.rdclass != other.rdclass or \ self.origin != other.origin or \ self.nodes != other.nodes: return False return True def __ne__(self, other): """Are two zones not equal? @rtype: bool """ return not self.__eq__(other) def _validate_name(self, name): if isinstance(name, (str, unicode)): name = dns.name.from_text(name, None) elif not isi