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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
rdtypes	[ DIR ]	drwxr-xr-x
__init__.py	1.3 KB	-rw-r--r--
_compat.py	1.28 KB	-rw-r--r--
dnssec.py	14.44 KB	-rw-r--r--
e164.py	3.07 KB	-rw-r--r--
edns.py	4.28 KB	-rw-r--r--
entropy.py	4.36 KB	-rw-r--r--
exception.py	4.52 KB	-rw-r--r--
flags.py	2.6 KB	-rw-r--r--
grange.py	1.93 KB	-rw-r--r--
hash.py	1.07 KB	-rw-r--r--
inet.py	3.17 KB	-rw-r--r--
ipv4.py	1.98 KB	-rw-r--r--
ipv6.py	5.17 KB	-rw-r--r--
message.py	42.12 KB	-rw-r--r--
name.py	28.74 KB	-rw-r--r--
namedict.py	3.59 KB	-rw-r--r--
node.py	5.91 KB	-rw-r--r--
opcode.py	2.48 KB	-rw-r--r--
query.py	19.18 KB	-rw-r--r--
rcode.py	3.03 KB	-rw-r--r--
rdata.py	14.65 KB	-rw-r--r--
rdataclass.py	3.18 KB	-rw-r--r--
rdataset.py	11.29 KB	-rw-r--r--
rdatatype.py	5.21 KB	-rw-r--r--
renderer.py	11.64 KB	-rw-r--r--
resolver.py	50.88 KB	-rw-r--r--
reversename.py	3.23 KB	-rw-r--r--
rrset.py	5.85 KB	-rw-r--r--
set.py	7.53 KB	-rw-r--r--
tokenizer.py	17.88 KB	-rw-r--r--
tsig.py	7.54 KB	-rw-r--r--
tsigkeyring.py	1.7 KB	-rw-r--r--
ttl.py	2.23 KB	-rw-r--r--
update.py	9.78 KB	-rw-r--r--
version.py	1.23 KB	-rw-r--r--
wiredata.py	3.64 KB	-rw-r--r--
zone.py	39.09 KB	-rw-r--r--

Code Editor : edns.py

# Copyright (C) 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.

"""EDNS Options"""

NSID = 3

class Option(object):

"""Base class for all EDNS option types.
    """

def __init__(self, otype):
        """Initialize an option.
        @param otype: The rdata type
        @type otype: int
        """
        self.otype = otype

def to_wire(self, file):
        """Convert an option to wire format.
        """
        raise NotImplementedError

@classmethod
    def from_wire(cls, otype, wire, current, olen):
        """Build an EDNS option object from wire format

@param otype: The option type
        @type otype: int
        @param wire: The wire-format message
        @type wire: string
        @param current: The offset in wire of the beginning of the rdata.
        @type current: int
        @param olen: The length of the wire-format option data
        @type olen: int
        @rtype: dns.edns.Option instance"""
        raise NotImplementedError

def _cmp(self, other):
        """Compare an EDNS option with another option of the same type.
        Return < 0 if self < other, 0 if self == other,
        and > 0 if self > other.
        """
        raise NotImplementedError

def __eq__(self, other):
        if not isinstance(other, Option):
            return False
        if self.otype != other.otype:
            return False
        return self._cmp(other) == 0

def __ne__(self, other):
        if not isinstance(other, Option):
            return False
        if self.otype != other.otype:
            return False
        return self._cmp(other) != 0

def __lt__(self, other):
        if not isinstance(other, Option) or \
                self.otype != other.otype:
            return NotImplemented
        return self._cmp(other) < 0

def __le__(self, other):
        if not isinstance(other, Option) or \
                self.otype != other.otype:
            return NotImplemented
        return self._cmp(other) <= 0

def __ge__(self, other):
        if not isinstance(other, Option) or \
                self.otype != other.otype:
            return NotImplemented
        return self._cmp(other) >= 0

def __gt__(self, other):
        if not isinstance(other, Option) or \
                self.otype != other.otype:
            return NotImplemented
        return self._cmp(other) > 0

class GenericOption(Option):

"""Generate Rdata Class

This class is used for EDNS option types for which we have no better
    implementation.
    """

def __init__(self, otype, data):
        super(GenericOption, self).__init__(otype)
        self.data = data

def to_wire(self, file):
        file.write(self.data)

@classmethod
    def from_wire(cls, otype, wire, current, olen):
        return cls(otype, wire[current: current + olen])

def _cmp(self, other):
        if self.data == other.data:
            return 0
        if self.data > other.data:
            return 1
        return -1

_type_to_class = {
}

def get_option_class(otype):
    cls = _type_to_class.get(otype)
    if cls is None:
        cls = GenericOption
    return cls

def option_from_wire(otype, wire, current, olen):
    """Build an EDNS option object from wire format

@param otype: The option type
    @type otype: int
    @param wire: The wire-format message
    @type wire: string
    @param current: The offset in wire of the beginning of the rdata.
    @type current: int
    @param olen: The length of the wire-format option data
    @type olen: int
    @rtype: dns.edns.Option instance"""

cls = get_option_class(otype)
    return cls.from_wire(otype, wire, current, olen)

${this.title}

Code Editor : edns.py