| Index: tools/telemetry/third_party/webpagereplay/third_party/dns/rdataset.py
|
| diff --git a/tools/telemetry/third_party/webpagereplay/third_party/dns/rdataset.py b/tools/telemetry/third_party/webpagereplay/third_party/dns/rdataset.py
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| deleted file mode 100644
|
| index 0af018bab5c0e715cede89f7fc7ab794e7faea9c..0000000000000000000000000000000000000000
|
| --- a/tools/telemetry/third_party/webpagereplay/third_party/dns/rdataset.py
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| +++ /dev/null
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| @@ -1,329 +0,0 @@
|
| -# Copyright (C) 2001-2007, 2009, 2010 Nominum, Inc.
|
| -#
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| -# Permission to use, copy, modify, and distribute this software and its
|
| -# documentation for any purpose with or without fee is hereby granted,
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| -# provided that the above copyright notice and this permission notice
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| -# appear in all copies.
|
| -#
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| -# 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
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| -# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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| -# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
| -# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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| -# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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| -
|
| -"""DNS rdatasets (an rdataset is a set of rdatas of a given type and class)"""
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| -
|
| -import random
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| -import StringIO
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| -import struct
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| -
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| -import dns.exception
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| -import dns.rdatatype
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| -import dns.rdataclass
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| -import dns.rdata
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| -import dns.set
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| -
|
| -# define SimpleSet here for backwards compatibility
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| -SimpleSet = dns.set.Set
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| -
|
| -class DifferingCovers(dns.exception.DNSException):
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| - """Raised if an attempt is made to add a SIG/RRSIG whose covered type
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| - is not the same as that of the other rdatas in the rdataset."""
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| - pass
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| -
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| -class IncompatibleTypes(dns.exception.DNSException):
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| - """Raised if an attempt is made to add rdata of an incompatible type."""
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| - pass
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| -
|
| -class Rdataset(dns.set.Set):
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| - """A DNS rdataset.
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| -
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| - @ivar rdclass: The class of the rdataset
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| - @type rdclass: int
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| - @ivar rdtype: The type of the rdataset
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| - @type rdtype: int
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| - @ivar covers: The covered type. Usually this value is
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| - dns.rdatatype.NONE, but if the rdtype is dns.rdatatype.SIG or
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| - dns.rdatatype.RRSIG, then the covers value will be the rdata
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| - type the SIG/RRSIG covers. The library treats the SIG and RRSIG
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| - types as if they were a family of
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| - types, e.g. RRSIG(A), RRSIG(NS), RRSIG(SOA). This makes RRSIGs much
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| - easier to work with than if RRSIGs covering different rdata
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| - types were aggregated into a single RRSIG rdataset.
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| - @type covers: int
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| - @ivar ttl: The DNS TTL (Time To Live) value
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| - @type ttl: int
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| - """
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| -
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| - __slots__ = ['rdclass', 'rdtype', 'covers', 'ttl']
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| -
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| - def __init__(self, rdclass, rdtype, covers=dns.rdatatype.NONE):
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| - """Create a new rdataset of the specified class and type.
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| -
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| - @see: the description of the class instance variables for the
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| - meaning of I{rdclass} and I{rdtype}"""
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| -
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| - super(Rdataset, self).__init__()
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| - self.rdclass = rdclass
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| - self.rdtype = rdtype
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| - self.covers = covers
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| - self.ttl = 0
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| -
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| - def _clone(self):
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| - obj = super(Rdataset, self)._clone()
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| - obj.rdclass = self.rdclass
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| - obj.rdtype = self.rdtype
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| - obj.covers = self.covers
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| - obj.ttl = self.ttl
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| - return obj
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| -
|
| - def update_ttl(self, ttl):
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| - """Set the TTL of the rdataset to be the lesser of the set's current
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| - TTL or the specified TTL. If the set contains no rdatas, set the TTL
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| - to the specified TTL.
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| - @param ttl: The TTL
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| - @type ttl: int"""
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| -
|
| - if len(self) == 0:
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| - self.ttl = ttl
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| - elif ttl < self.ttl:
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| - self.ttl = ttl
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| -
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| - def add(self, rd, ttl=None):
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| - """Add the specified rdata to the rdataset.
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| -
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| - If the optional I{ttl} parameter is supplied, then
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| - self.update_ttl(ttl) will be called prior to adding the rdata.
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| -
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| - @param rd: The rdata
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| - @type rd: dns.rdata.Rdata object
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| - @param ttl: The TTL
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| - @type ttl: int"""
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| -
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| - #
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| - # If we're adding a signature, do some special handling to
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| - # check that the signature covers the same type as the
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| - # other rdatas in this rdataset. If this is the first rdata
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| - # in the set, initialize the covers field.
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| - #
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| - if self.rdclass != rd.rdclass or self.rdtype != rd.rdtype:
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| - raise IncompatibleTypes
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| - if not ttl is None:
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| - self.update_ttl(ttl)
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| - if self.rdtype == dns.rdatatype.RRSIG or \
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| - self.rdtype == dns.rdatatype.SIG:
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| - covers = rd.covers()
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| - if len(self) == 0 and self.covers == dns.rdatatype.NONE:
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| - self.covers = covers
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| - elif self.covers != covers:
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| - raise DifferingCovers
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| - if dns.rdatatype.is_singleton(rd.rdtype) and len(self) > 0:
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| - self.clear()
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| - super(Rdataset, self).add(rd)
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| -
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| - def union_update(self, other):
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| - self.update_ttl(other.ttl)
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| - super(Rdataset, self).union_update(other)
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| -
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| - def intersection_update(self, other):
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| - self.update_ttl(other.ttl)
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| - super(Rdataset, self).intersection_update(other)
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| -
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| - def update(self, other):
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| - """Add all rdatas in other to self.
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| -
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| - @param other: The rdataset from which to update
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| - @type other: dns.rdataset.Rdataset object"""
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| -
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| - self.update_ttl(other.ttl)
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| - super(Rdataset, self).update(other)
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| -
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| - def __repr__(self):
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| - if self.covers == 0:
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| - ctext = ''
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| - else:
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| - ctext = '(' + dns.rdatatype.to_text(self.covers) + ')'
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| - return '<DNS ' + dns.rdataclass.to_text(self.rdclass) + ' ' + \
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| - dns.rdatatype.to_text(self.rdtype) + ctext + ' rdataset>'
|
| -
|
| - def __str__(self):
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| - return self.to_text()
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| -
|
| - def __eq__(self, other):
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| - """Two rdatasets are equal if they have the same class, type, and
|
| - covers, and contain the same rdata.
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| - @rtype: bool"""
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| -
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| - if not isinstance(other, Rdataset):
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| - return False
|
| - if self.rdclass != other.rdclass or \
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| - self.rdtype != other.rdtype or \
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| - self.covers != other.covers:
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| - return False
|
| - return super(Rdataset, self).__eq__(other)
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| -
|
| - def __ne__(self, other):
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| - return not self.__eq__(other)
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| -
|
| - def to_text(self, name=None, origin=None, relativize=True,
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| - override_rdclass=None, **kw):
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| - """Convert the rdataset into DNS master file format.
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| -
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| - @see: L{dns.name.Name.choose_relativity} for more information
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| - on how I{origin} and I{relativize} determine the way names
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| - are emitted.
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| -
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| - Any additional keyword arguments are passed on to the rdata
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| - to_text() method.
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| -
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| - @param name: If name is not None, emit a RRs with I{name} as
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| - the owner name.
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| - @type name: dns.name.Name object
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| - @param origin: The origin for relative names, or None.
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| - @type origin: dns.name.Name object
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| - @param relativize: True if names should names be relativized
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| - @type relativize: bool"""
|
| - if not name is None:
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| - name = name.choose_relativity(origin, relativize)
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| - ntext = str(name)
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| - pad = ' '
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| - else:
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| - ntext = ''
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| - pad = ''
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| - s = StringIO.StringIO()
|
| - if not override_rdclass is None:
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| - rdclass = override_rdclass
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| - else:
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| - rdclass = self.rdclass
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| - if len(self) == 0:
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| - #
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| - # Empty rdatasets are used for the question section, and in
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| - # some dynamic updates, so we don't need to print out the TTL
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| - # (which is meaningless anyway).
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| - #
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| - print >> s, '%s%s%s %s' % (ntext, pad,
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| - dns.rdataclass.to_text(rdclass),
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| - dns.rdatatype.to_text(self.rdtype))
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| - else:
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| - for rd in self:
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| - print >> s, '%s%s%d %s %s %s' % \
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| - (ntext, pad, self.ttl, dns.rdataclass.to_text(rdclass),
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| - dns.rdatatype.to_text(self.rdtype),
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| - rd.to_text(origin=origin, relativize=relativize, **kw))
|
| - #
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| - # We strip off the final \n for the caller's convenience in printing
|
| - #
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| - return s.getvalue()[:-1]
|
| -
|
| - def to_wire(self, name, file, compress=None, origin=None,
|
| - override_rdclass=None, want_shuffle=True):
|
| - """Convert the rdataset to wire format.
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| -
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| - @param name: The owner name of the RRset that will be emitted
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| - @type name: dns.name.Name object
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| - @param file: The file to which the wire format data will be appended
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| - @type file: file
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| - @param compress: The compression table to use; the default is None.
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| - @type compress: dict
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| - @param origin: The origin to be appended to any relative names when
|
| - they are emitted. The default is None.
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| - @returns: the number of records emitted
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| - @rtype: int
|
| - """
|
| -
|
| - if not override_rdclass is None:
|
| - rdclass = override_rdclass
|
| - want_shuffle = False
|
| - else:
|
| - rdclass = self.rdclass
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| - file.seek(0, 2)
|
| - if len(self) == 0:
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| - name.to_wire(file, compress, origin)
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| - stuff = struct.pack("!HHIH", self.rdtype, rdclass, 0, 0)
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| - file.write(stuff)
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| - return 1
|
| - else:
|
| - if want_shuffle:
|
| - l = list(self)
|
| - random.shuffle(l)
|
| - else:
|
| - l = self
|
| - for rd in l:
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| - name.to_wire(file, compress, origin)
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| - stuff = struct.pack("!HHIH", self.rdtype, rdclass,
|
| - self.ttl, 0)
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| - file.write(stuff)
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| - start = file.tell()
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| - rd.to_wire(file, compress, origin)
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| - end = file.tell()
|
| - assert end - start < 65536
|
| - file.seek(start - 2)
|
| - stuff = struct.pack("!H", end - start)
|
| - file.write(stuff)
|
| - file.seek(0, 2)
|
| - return len(self)
|
| -
|
| - def match(self, rdclass, rdtype, covers):
|
| - """Returns True if this rdataset matches the specified class, type,
|
| - and covers"""
|
| - if self.rdclass == rdclass and \
|
| - self.rdtype == rdtype and \
|
| - self.covers == covers:
|
| - return True
|
| - return False
|
| -
|
| -def from_text_list(rdclass, rdtype, ttl, text_rdatas):
|
| - """Create an rdataset with the specified class, type, and TTL, and with
|
| - the specified list of rdatas in text format.
|
| -
|
| - @rtype: dns.rdataset.Rdataset object
|
| - """
|
| -
|
| - if isinstance(rdclass, str):
|
| - rdclass = dns.rdataclass.from_text(rdclass)
|
| - if isinstance(rdtype, str):
|
| - rdtype = dns.rdatatype.from_text(rdtype)
|
| - r = Rdataset(rdclass, rdtype)
|
| - r.update_ttl(ttl)
|
| - for t in text_rdatas:
|
| - rd = dns.rdata.from_text(r.rdclass, r.rdtype, t)
|
| - r.add(rd)
|
| - return r
|
| -
|
| -def from_text(rdclass, rdtype, ttl, *text_rdatas):
|
| - """Create an rdataset with the specified class, type, and TTL, and with
|
| - the specified rdatas in text format.
|
| -
|
| - @rtype: dns.rdataset.Rdataset object
|
| - """
|
| -
|
| - return from_text_list(rdclass, rdtype, ttl, text_rdatas)
|
| -
|
| -def from_rdata_list(ttl, rdatas):
|
| - """Create an rdataset with the specified TTL, and with
|
| - the specified list of rdata objects.
|
| -
|
| - @rtype: dns.rdataset.Rdataset object
|
| - """
|
| -
|
| - if len(rdatas) == 0:
|
| - raise ValueError("rdata list must not be empty")
|
| - r = None
|
| - for rd in rdatas:
|
| - if r is None:
|
| - r = Rdataset(rd.rdclass, rd.rdtype)
|
| - r.update_ttl(ttl)
|
| - first_time = False
|
| - r.add(rd)
|
| - return r
|
| -
|
| -def from_rdata(ttl, *rdatas):
|
| - """Create an rdataset with the specified TTL, and with
|
| - the specified rdata objects.
|
| -
|
| - @rtype: dns.rdataset.Rdataset object
|
| - """
|
| -
|
| - return from_rdata_list(ttl, rdatas)
|
|
|