mirror of
https://github.com/thegeeklab/ansible-later.git
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361 lines
10 KiB
Python
361 lines
10 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
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# 2.0, and the BSD License. See the LICENSE file in the root of this repository
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# for complete details.
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from __future__ import absolute_import, division, print_function
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import abc
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import ipaddress
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import warnings
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from email.utils import parseaddr
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import six
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from six.moves import urllib_parse
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from cryptography import utils
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from cryptography.x509.name import Name
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from cryptography.x509.oid import ObjectIdentifier
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_GENERAL_NAMES = {
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0: "otherName",
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1: "rfc822Name",
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2: "dNSName",
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3: "x400Address",
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4: "directoryName",
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5: "ediPartyName",
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6: "uniformResourceIdentifier",
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7: "iPAddress",
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8: "registeredID",
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}
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def _lazy_import_idna():
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# Import idna lazily becase it allocates a decent amount of memory, and
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# we're only using it in deprecated paths.
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try:
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import idna
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return idna
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except ImportError:
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raise ImportError(
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"idna is not installed, but a deprecated feature that requires it"
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" was used. See: https://cryptography.io/en/latest/faq/#importe"
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"rror-idna-is-not-installed"
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)
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class UnsupportedGeneralNameType(Exception):
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def __init__(self, msg, type):
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super(UnsupportedGeneralNameType, self).__init__(msg)
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self.type = type
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@six.add_metaclass(abc.ABCMeta)
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class GeneralName(object):
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@abc.abstractproperty
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def value(self):
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"""
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Return the value of the object
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"""
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@utils.register_interface(GeneralName)
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class RFC822Name(object):
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def __init__(self, value):
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if isinstance(value, six.text_type):
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try:
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value.encode("ascii")
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except UnicodeEncodeError:
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value = self._idna_encode(value)
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warnings.warn(
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"RFC822Name values should be passed as an A-label string. "
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"This means unicode characters should be encoded via "
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"idna. Support for passing unicode strings (aka U-label) "
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"will be removed in a future version.",
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utils.PersistentlyDeprecated2017,
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stacklevel=2,
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)
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else:
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raise TypeError("value must be string")
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name, address = parseaddr(value)
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if name or not address:
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# parseaddr has found a name (e.g. Name <email>) or the entire
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# value is an empty string.
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raise ValueError("Invalid rfc822name value")
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self._value = value
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value = utils.read_only_property("_value")
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@classmethod
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def _init_without_validation(cls, value):
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instance = cls.__new__(cls)
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instance._value = value
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return instance
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def _idna_encode(self, value):
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idna = _lazy_import_idna()
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_, address = parseaddr(value)
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parts = address.split(u"@")
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return parts[0] + "@" + idna.encode(parts[1]).decode("ascii")
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def __repr__(self):
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return "<RFC822Name(value={0!r})>".format(self.value)
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def __eq__(self, other):
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if not isinstance(other, RFC822Name):
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return NotImplemented
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return self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(self.value)
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def _idna_encode(value):
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idna = _lazy_import_idna()
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# Retain prefixes '*.' for common/alt names and '.' for name constraints
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for prefix in ['*.', '.']:
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if value.startswith(prefix):
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value = value[len(prefix):]
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return prefix + idna.encode(value).decode("ascii")
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return idna.encode(value).decode("ascii")
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@utils.register_interface(GeneralName)
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class DNSName(object):
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def __init__(self, value):
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if isinstance(value, six.text_type):
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try:
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value.encode("ascii")
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except UnicodeEncodeError:
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value = _idna_encode(value)
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warnings.warn(
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"DNSName values should be passed as an A-label string. "
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"This means unicode characters should be encoded via "
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"idna. Support for passing unicode strings (aka U-label) "
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"will be removed in a future version.",
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utils.PersistentlyDeprecated2017,
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stacklevel=2,
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)
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else:
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raise TypeError("value must be string")
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self._value = value
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value = utils.read_only_property("_value")
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@classmethod
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def _init_without_validation(cls, value):
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instance = cls.__new__(cls)
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instance._value = value
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return instance
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def __repr__(self):
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return "<DNSName(value={0!r})>".format(self.value)
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def __eq__(self, other):
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if not isinstance(other, DNSName):
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return NotImplemented
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return self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(self.value)
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@utils.register_interface(GeneralName)
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class UniformResourceIdentifier(object):
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def __init__(self, value):
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if isinstance(value, six.text_type):
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try:
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value.encode("ascii")
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except UnicodeEncodeError:
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value = self._idna_encode(value)
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warnings.warn(
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"URI values should be passed as an A-label string. "
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"This means unicode characters should be encoded via "
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"idna. Support for passing unicode strings (aka U-label) "
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" will be removed in a future version.",
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utils.PersistentlyDeprecated2017,
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stacklevel=2,
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)
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else:
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raise TypeError("value must be string")
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self._value = value
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value = utils.read_only_property("_value")
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@classmethod
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def _init_without_validation(cls, value):
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instance = cls.__new__(cls)
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instance._value = value
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return instance
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def _idna_encode(self, value):
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idna = _lazy_import_idna()
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parsed = urllib_parse.urlparse(value)
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if parsed.port:
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netloc = (
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idna.encode(parsed.hostname) +
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":{}".format(parsed.port).encode("ascii")
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).decode("ascii")
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else:
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netloc = idna.encode(parsed.hostname).decode("ascii")
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# Note that building a URL in this fashion means it should be
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# semantically indistinguishable from the original but is not
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# guaranteed to be exactly the same.
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return urllib_parse.urlunparse((
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parsed.scheme,
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netloc,
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parsed.path,
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parsed.params,
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parsed.query,
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parsed.fragment
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))
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def __repr__(self):
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return "<UniformResourceIdentifier(value={0!r})>".format(self.value)
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def __eq__(self, other):
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if not isinstance(other, UniformResourceIdentifier):
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return NotImplemented
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return self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(self.value)
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@utils.register_interface(GeneralName)
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class DirectoryName(object):
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def __init__(self, value):
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if not isinstance(value, Name):
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raise TypeError("value must be a Name")
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self._value = value
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value = utils.read_only_property("_value")
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def __repr__(self):
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return "<DirectoryName(value={})>".format(self.value)
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def __eq__(self, other):
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if not isinstance(other, DirectoryName):
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return NotImplemented
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return self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(self.value)
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@utils.register_interface(GeneralName)
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class RegisteredID(object):
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def __init__(self, value):
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if not isinstance(value, ObjectIdentifier):
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raise TypeError("value must be an ObjectIdentifier")
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self._value = value
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value = utils.read_only_property("_value")
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def __repr__(self):
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return "<RegisteredID(value={})>".format(self.value)
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def __eq__(self, other):
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if not isinstance(other, RegisteredID):
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return NotImplemented
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return self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(self.value)
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@utils.register_interface(GeneralName)
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class IPAddress(object):
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def __init__(self, value):
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if not isinstance(
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value,
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(
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ipaddress.IPv4Address,
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ipaddress.IPv6Address,
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ipaddress.IPv4Network,
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ipaddress.IPv6Network
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)
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):
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raise TypeError(
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"value must be an instance of ipaddress.IPv4Address, "
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"ipaddress.IPv6Address, ipaddress.IPv4Network, or "
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"ipaddress.IPv6Network"
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)
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self._value = value
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value = utils.read_only_property("_value")
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def __repr__(self):
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return "<IPAddress(value={})>".format(self.value)
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def __eq__(self, other):
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if not isinstance(other, IPAddress):
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return NotImplemented
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return self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(self.value)
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@utils.register_interface(GeneralName)
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class OtherName(object):
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def __init__(self, type_id, value):
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if not isinstance(type_id, ObjectIdentifier):
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raise TypeError("type_id must be an ObjectIdentifier")
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if not isinstance(value, bytes):
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raise TypeError("value must be a binary string")
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self._type_id = type_id
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self._value = value
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type_id = utils.read_only_property("_type_id")
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value = utils.read_only_property("_value")
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def __repr__(self):
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return "<OtherName(type_id={}, value={!r})>".format(
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self.type_id, self.value)
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def __eq__(self, other):
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if not isinstance(other, OtherName):
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return NotImplemented
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return self.type_id == other.type_id and self.value == other.value
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash((self.type_id, self.value))
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