File Content: name.py # This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. from __future__ import absolute_import, division, print_function import six from cryptography import utils from cryptography.x509.oid import NameOID, ObjectIdentifier class NameAttribute(object): def __init__(self, oid, value): if not isinstance(oid, ObjectIdentifier): raise TypeError( "oid argument must be an ObjectIdentifier instance." ) if not isinstance(value, six.text_type): raise TypeError( "value argument must be a text type." ) if oid == NameOID.COUNTRY_NAME and len(value.encode("utf8")) != 2: raise ValueError( "Country name must be a 2 character country code" ) self._oid = oid self._value = value oid = utils.read_only_property("_oid") value = utils.read_only_property("_value") def __eq__(self, other): if not isinstance(other, NameAttribute): return NotImplemented return ( self.oid == other.oid and self.value == other.value ) def __ne__(self, other): return not self == other def __hash__(self): return hash((self.oid, self.value)) def __repr__(self): return "<NameAttribute(oid={0.oid}, value={0.value!r})>".format(self) class RelativeDistinguishedName(object): def __init__(self, attributes): attributes = frozenset(attributes) if not attributes: raise ValueError("a relative distinguished name cannot be empty") if not all(isinstance(x, NameAttribute) for x in attributes): raise TypeError("attributes must be an iterable of NameAttribute") self._attributes = attributes def get_attributes_for_oid(self, oid): return [i for i in self if i.oid == oid] def __eq__(self, other): if not isinstance(other, RelativeDistinguishedName): return NotImplemented return self._attributes == other._attributes def __ne__(self, other): return not self == other def __hash__(self): return hash(self._attributes) def __iter__(self): return iter(self._attributes) def __len__(self): return len(self._attributes) def __repr__(self): return "<RelativeDistinguishedName({0!r})>".format(list(self)) class Name(object): def __init__(self, attributes): attributes = list(attributes) if all(isinstance(x, NameAttribute) for x in attributes): self._attributes = [ RelativeDistinguishedName([x]) for x in attributes ] elif all(isinstance(x, RelativeDistinguishedName) for x in attributes): self._attributes = attributes else: raise TypeError( "attributes must be a list of NameAttribute" " or a list RelativeDistinguishedName" ) def get_attributes_for_oid(self, oid): return [i for i in self if i.oid == oid] @property def rdns(self): return self._attributes def public_bytes(self, backend): return backend.x509_name_bytes(self) def __eq__(self, other): if not isinstance(other, Name): return NotImplemented return self._attributes == other._attributes def __ne__(self, other): return not self == other def __hash__(self): # TODO: this is relatively expensive, if this looks like a bottleneck # for you, consider optimizing! return hash(tuple(self._attributes)) def __iter__(self): for rdn in self._attributes: for ava in rdn: yield ava def __len__(self): return sum(len(rdn) for rdn in self._attributes) def __repr__(self): return "<Name({0!r})>".format(list(self)) Submit