ab3298c6d1
This change removes all references to self.__class__. In object hierarchies with multiple levels of inheritance, using self.__class__ can cause an infinite loop when resolving references to parent classes.
726 lines
24 KiB
Python
726 lines
24 KiB
Python
# Copyright (c) 2014 The Johns Hopkins University/Applied Physics Laboratory
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from kmip.core import enums
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from kmip.core.enums import CertificateTypeEnum
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from kmip.core.enums import HashingAlgorithm as HashingAlgorithmEnum
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from kmip.core.enums import KeyFormatType as KeyFormatTypeEnum
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from kmip.core.enums import Tags
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from kmip.core.errors import ErrorStrings
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from kmip.core.misc import KeyFormatType
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from kmip.core.primitives import ByteString
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from kmip.core.primitives import Enumeration
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from kmip.core.primitives import Integer
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from kmip.core.primitives import Struct
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from kmip.core.primitives import TextString
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from kmip.core.utils import BytearrayStream
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from enum import Enum
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# 3.1
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class UniqueIdentifier(TextString):
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def __init__(self, value=None, tag=Tags.UNIQUE_IDENTIFIER):
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super(UniqueIdentifier, self).__init__(value, tag)
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class PrivateKeyUniqueIdentifier(UniqueIdentifier):
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def __init__(self, value=None):
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super(PrivateKeyUniqueIdentifier, self).__init__(
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value, Tags.PRIVATE_KEY_UNIQUE_IDENTIFIER)
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class PublicKeyUniqueIdentifier(UniqueIdentifier):
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def __init__(self, value=None):
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super(PublicKeyUniqueIdentifier, self).__init__(
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value, Tags.PUBLIC_KEY_UNIQUE_IDENTIFIER)
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# 3.2
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class Name(Struct):
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class NameValue(TextString):
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def __init__(self, value=None):
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super(Name.NameValue, self).__init__(value, Tags.NAME_VALUE)
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class NameType(Enumeration):
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ENUM_TYPE = enums.NameType
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def __init__(self, value=None):
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super(Name.NameType, self).__init__(value, Tags.NAME_TYPE)
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def __init__(self, name_value=None, name_type=None):
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super(Name, self).__init__(tag=Tags.NAME)
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self.name_value = name_value
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self.name_type = name_type
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self.validate()
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def read(self, istream):
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super(Name, self).read(istream)
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tstream = BytearrayStream(istream.read(self.length))
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# Read the value and type of the name
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self.name_value = Name.NameValue()
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self.name_type = Name.NameType()
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self.name_value.read(tstream)
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self.name_type.read(tstream)
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self.is_oversized(tstream)
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def write(self, ostream):
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tstream = BytearrayStream()
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# Write the value and type of the name
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self.name_value.write(tstream)
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self.name_type.write(tstream)
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# Write the length and value of the template attribute
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self.length = tstream.length()
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super(Name, self).write(ostream)
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ostream.write(tstream.buffer)
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def validate(self):
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self.__validate()
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def __validate(self):
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name = Name.__name__
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msg = ErrorStrings.BAD_EXP_RECV
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if self.name_value and \
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not isinstance(self.name_value, Name.NameValue) and \
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not isinstance(self.name_value, str):
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member = 'name_value'
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raise TypeError(msg.format('{0}.{1}'.format(name, member),
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'name_value', type(Name.NameValue),
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type(self.name_value)))
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if self.name_type and \
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not isinstance(self.name_type, Name.NameType) and \
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not isinstance(self.name_type, str):
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member = 'name_type'
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raise TypeError(msg.format('{0}.{1}'.format(name, member),
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'name_type', type(Name.NameType),
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type(self.name_type)))
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@classmethod
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def create(cls, name_value, name_type):
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if isinstance(name_value, Name.NameValue):
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value = name_value
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elif isinstance(name_value, str):
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value = cls.NameValue(name_value)
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else:
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name = 'Name'
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msg = ErrorStrings.BAD_EXP_RECV
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member = 'name_value'
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raise TypeError(msg.format('{0}.{1}'.format(name, member),
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'name_value', type(Name.NameValue),
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type(name_value)))
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if isinstance(name_type, Name.NameType):
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n_type = name_type
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elif isinstance(name_type, Enum):
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n_type = cls.NameType(name_type)
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else:
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name = 'Name'
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msg = ErrorStrings.BAD_EXP_RECV
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member = 'name_type'
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raise TypeError(msg.format('{0}.{1}'.format(name, member),
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'name_type', type(Name.NameType),
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type(name_type)))
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return Name(name_value=value,
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name_type=n_type)
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# 3.3
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class ObjectType(Enumeration):
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ENUM_TYPE = enums.ObjectType
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def __init__(self, value=None):
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super(ObjectType, self).__init__(value, Tags.OBJECT_TYPE)
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# 3.4
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class CryptographicAlgorithm(Enumeration):
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ENUM_TYPE = enums.CryptographicAlgorithm
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def __init__(self, value=None):
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super(CryptographicAlgorithm, self).__init__(
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value, Tags.CRYPTOGRAPHIC_ALGORITHM)
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# 3.5
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class CryptographicLength(Integer):
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def __init__(self, value=None):
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super(CryptographicLength, self).__init__(
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value, Tags.CRYPTOGRAPHIC_LENGTH)
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# 3.6
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class HashingAlgorithm(Enumeration):
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"""
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An encodeable wrapper for the HashingAlgorithm enumeration.
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Used to specify the algorithm used to compute the Digest of a Managed
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Object. See Sections 3.17 and 9.1.3.2.16 of the KMIP v1.1 specification
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for more information.
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"""
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ENUM_TYPE = enums.HashingAlgorithm
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def __init__(self, value=HashingAlgorithmEnum.SHA_256):
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"""
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Construct a HashingAlgorithm object.
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Args:
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value (HashingAlgorithm): A HashingAlgorithm enumeration value,
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(e.g., HashingAlgorithm.MD5). Optional, defaults to
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HashingAlgorithm.SHA_256.
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"""
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super(HashingAlgorithm, self).__init__(value, Tags.HASHING_ALGORITHM)
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class CryptographicParameters(Struct):
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class BlockCipherMode(Enumeration):
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ENUM_TYPE = enums.BlockCipherMode
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def __init__(self, value=None):
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super(CryptographicParameters.BlockCipherMode, self).__init__(
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value, Tags.BLOCK_CIPHER_MODE)
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class PaddingMethod(Enumeration):
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ENUM_TYPE = enums.PaddingMethod
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def __init__(self, value=None):
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super(CryptographicParameters.PaddingMethod, self).__init__(
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value, Tags.PADDING_METHOD)
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class KeyRoleType(Enumeration):
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ENUM_TYPE = enums.KeyRoleType
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def __init__(self, value=None):
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super(CryptographicParameters.KeyRoleType, self).__init__(
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value, Tags.KEY_ROLE_TYPE)
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def __init__(self,
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block_cipher_mode=None,
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padding_method=None,
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hashing_algorithm=None,
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key_role_type=None):
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super(CryptographicParameters, self).__init__(
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tag=Tags.CRYPTOGRAPHIC_PARAMETERS)
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self.block_cipher_mode = block_cipher_mode
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self.padding_method = padding_method
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self.hashing_algorithm = hashing_algorithm
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self.key_role_type = key_role_type
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def read(self, istream):
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super(CryptographicParameters, self).read(istream)
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tstream = BytearrayStream(istream.read(self.length))
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if self.is_tag_next(Tags.BLOCK_CIPHER_MODE, tstream):
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self.block_cipher_mode = CryptographicParameters.BlockCipherMode()
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self.block_cipher_mode.read(tstream)
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if self.is_tag_next(Tags.PADDING_METHOD, tstream):
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self.padding_method = CryptographicParameters.PaddingMethod()
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self.padding_method.read(tstream)
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if self.is_tag_next(Tags.HASHING_ALGORITHM, tstream):
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self.hashing_algorithm = HashingAlgorithm()
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self.hashing_algorithm.read(tstream)
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if self.is_tag_next(Tags.KEY_ROLE_TYPE, tstream):
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self.key_role_type = CryptographicParameters.KeyRoleType()
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self.key_role_type.read(tstream)
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self.is_oversized(tstream)
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self.validate()
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def write(self, ostream):
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tstream = BytearrayStream()
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# Write the contents of the request payload
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if self.block_cipher_mode is not None:
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self.block_cipher_mode.write(tstream)
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if self.padding_method is not None:
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self.padding_method.write(tstream)
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if self.hashing_algorithm is not None:
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self.hashing_algorithm.write(tstream)
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if self.key_role_type is not None:
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self.key_role_type.write(tstream)
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# Write the length and value of the request payload
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self.length = tstream.length()
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super(CryptographicParameters, self).write(ostream)
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ostream.write(tstream.buffer)
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def validate(self):
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self.__validate()
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def __validate(self):
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# TODO (peter-hamilton) Finish implementation.
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pass
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class CertificateType(Enumeration):
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"""
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An encodeable wrapper for the CertificateType enumeration.
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Used to specify the type of the encoded bytes of a Certificate Managed
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Object. See Sections 2.2.1 and 3.8 of the KMIP v1.1 specification for more
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information.
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"""
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ENUM_TYPE = enums.CertificateTypeEnum
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def __init__(self, value=CertificateTypeEnum.X_509):
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"""
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Construct a CertificateType object.
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Args:
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value (CertificateTypeEnum): A CertificateTypeEnum enumeration
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value, (e.g., CertificateTypeEnum.PGP). Optional, defaults to
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CertificateTypeEnum.X_509.
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"""
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super(CertificateType, self).__init__(value, Tags.CERTIFICATE_TYPE)
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class DigestValue(ByteString):
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"""
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A byte string representing the hash value of a Digest.
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Used to hold the bytes of the digest hash value. Automatically generated
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by the KMIP server, the value is empty if the server does not have access
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to the value or encoding of the related Managed Object. See Section 3.17
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of the KMIP 1.1 specification for more information.
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Attributes:
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value: The bytes of the hash.
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"""
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def __init__(self, value=b''):
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"""
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Construct a DigestValue object.
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Args:
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value (bytes): The bytes of the hash. Optional, defaults to
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the empty byte string.
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"""
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super(DigestValue, self).__init__(value, Tags.DIGEST_VALUE)
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class Digest(Struct):
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"""
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A structure storing a hash digest of a Managed Object.
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Digests may be calculated for keys, secret data objects, certificates, and
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opaque data objects and are generated when the object is created or
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registered with the KMIP server. See Section 3.17 of the KMIP 1.1
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specification for more information.
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Attributes:
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hashing_algorithm: The algorithm used to compute the hash digest.
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digest_value: The bytes representing the hash digest value.
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key_format_type: The type of the key the hash was generated for.
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"""
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def __init__(self,
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hashing_algorithm=None,
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digest_value=None,
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key_format_type=None):
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"""
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Construct a Digest object.
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Args:
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hashing_algorithm (HashingAlgorithm): The hash algorithm used to
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compute the value of the digest. Optional, defaults to None.
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digest_value (DigestValue): The byte string representing the
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value of the hash digest. Optional, defaults to None.
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key_format_type (KeyFormatType): The format type of the key the
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hash was computed for, if the object in question is a key.
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Optional, defaults to None.
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"""
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super(Digest, self).__init__(Tags.DIGEST)
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if hashing_algorithm is None:
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self.hashing_algorithm = HashingAlgorithm()
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else:
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self.hashing_algorithm = hashing_algorithm
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if digest_value is None:
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self.digest_value = DigestValue()
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else:
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self.digest_value = digest_value
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if key_format_type is None:
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self.key_format_type = KeyFormatType()
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else:
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self.key_format_type = key_format_type
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self.validate()
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def read(self, istream):
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"""
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Read the data encoding the Digest object and decode it into its
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constituent parts.
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Args:
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istream (Stream): A data stream containing encoded object data,
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supporting a read method; usually a BytearrayStream object.
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"""
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super(Digest, self).read(istream)
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tstream = BytearrayStream(istream.read(self.length))
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self.hashing_algorithm.read(tstream)
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self.digest_value.read(tstream)
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self.key_format_type.read(tstream)
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self.is_oversized(tstream)
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self.validate()
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def write(self, ostream):
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"""
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Write the data encoding the Digest object to a stream.
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Args:
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ostream (Stream): A data stream in which to encode object data,
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supporting a write method; usually a BytearrayStream object.
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"""
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tstream = BytearrayStream()
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self.hashing_algorithm.write(tstream)
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self.digest_value.write(tstream)
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self.key_format_type.write(tstream)
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self.length = tstream.length()
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super(Digest, self).write(ostream)
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ostream.write(tstream.buffer)
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def validate(self):
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"""
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Error check the attributes of the Digest object.
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"""
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self.__validate()
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def __validate(self):
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# TODO (peter-hamilton) Add checks comparing the length of the digest
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# value against the standard length for the stated hashing algorithm.
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if not isinstance(self.hashing_algorithm, HashingAlgorithm):
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msg = "invalid hashing algorithm"
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msg += "; expected {0}, received {1}".format(
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HashingAlgorithm, self.hashing_algorithm)
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raise TypeError(msg)
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if not isinstance(self.digest_value, DigestValue):
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msg = "invalid digest value"
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msg += "; expected {0}, received {1}".format(
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DigestValue, self.digest_value)
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raise TypeError(msg)
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if not isinstance(self.key_format_type, KeyFormatType):
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msg = "invalid key format type"
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msg += "; expected {0}, received {1}".format(
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KeyFormatType, self.key_format_type)
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raise TypeError(msg)
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def __eq__(self, other):
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if isinstance(other, Digest):
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if self.hashing_algorithm != other.hashing_algorithm:
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return False
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elif self.digest_value != other.digest_value:
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return False
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elif self.key_format_type != other.key_format_type:
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return False
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else:
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return True
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else:
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return NotImplemented
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def __ne__(self, other):
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if isinstance(other, Digest):
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return not (self == other)
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else:
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return NotImplemented
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def __repr__(self):
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hashing_algorithm = "hashing_algorithm={0}".format(
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repr(self.hashing_algorithm))
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digest_value = "digest_value={0}".format(
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repr(self.digest_value))
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key_format_type = "key_format_type={0}".format(
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repr(self.key_format_type))
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return "Digest({0}, {1}, {2})".format(
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hashing_algorithm, digest_value, key_format_type)
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def __str__(self):
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return str(self.digest_value)
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@classmethod
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def create(cls,
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hashing_algorithm=HashingAlgorithmEnum.SHA_256,
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digest_value=b'',
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key_format_type=KeyFormatTypeEnum.RAW):
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"""
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Construct a Digest object from provided digest values.
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Args:
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hashing_algorithm (HashingAlgorithm): An enumeration representing
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the hash algorithm used to compute the digest. Optional,
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defaults to HashingAlgorithm.SHA_256.
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digest_value (byte string): The bytes of the digest hash. Optional,
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defaults to the empty byte string.
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key_format_type (KeyFormatType): An enumeration representing the
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format of the key corresponding to the digest. Optional,
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defaults to KeyFormatType.RAW.
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Returns:
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Digest: The newly created Digest.
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Example:
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>>> x = Digest.create(HashingAlgorithm.MD5, b'\x00',
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... KeyFormatType.RAW)
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>>> x.hashing_algorithm
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HashingAlgorithm(value=HashingAlgorithm.MD5)
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>>> x.digest_value
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DigestValue(value=bytearray(b'\x00'))
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>>> x.key_format_type
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KeyFormatType(value=KeyFormatType.RAW)
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"""
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algorithm = HashingAlgorithm(hashing_algorithm)
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value = DigestValue(bytearray(digest_value))
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format_type = KeyFormatType(key_format_type)
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return Digest(hashing_algorithm=algorithm,
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digest_value=value,
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key_format_type=format_type)
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# 3.18
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class OperationPolicyName(TextString):
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def __init__(self, value=None):
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super(OperationPolicyName, self).__init__(
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value, Tags.OPERATION_POLICY_NAME)
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# 3.19
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class CryptographicUsageMask(Integer):
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ENUM_TYPE = enums.CryptographicUsageMask
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def __init__(self, value=None):
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super(CryptographicUsageMask, self).__init__(
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value, Tags.CRYPTOGRAPHIC_USAGE_MASK)
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# 3.33
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class ObjectGroup(TextString):
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def __init__(self, value=None):
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super(ObjectGroup, self).__init__(value, Tags.OBJECT_GROUP)
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# 3.36
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class ApplicationNamespace(TextString):
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"""
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The name of a namespace supported by the KMIP server.
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A part of ApplicationSpecificInformation, sets of these are also potential
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responses to a Query request. See Sections 3.36 and 4.25 of the KMIP v1.1
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specification for more information.
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"""
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def __init__(self, value=None):
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"""
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Construct an ApplicationNamespace object.
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Args:
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value (str): A string representing a namespace. Optional, defaults
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to None.
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"""
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super(ApplicationNamespace, self).__init__(
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value, Tags.APPLICATION_NAMESPACE)
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class ApplicationData(TextString):
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"""
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A string representing data specific to an application namespace.
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A part of ApplicationSpecificInformation. See Section 3.36 of the KMIP v1.1
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specification for more information.
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"""
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def __init__(self, value=None):
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"""
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Construct an ApplicationData object.
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Args:
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value (str): A string representing data for a particular namespace.
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Optional, defaults to None.
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"""
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super(ApplicationData, self).__init__(value, Tags.APPLICATION_DATA)
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class ApplicationSpecificInformation(Struct):
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"""
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A structure used to store data specific to the applications that use a
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Managed Object.
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An attribute of Managed Objects, it may be specified during the creation or
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modification of any server Managed Object.
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Attributes:
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application_namespace: The name of a namespace supported by the server.
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application_data: String data relevant to the specified namespace.
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See Section 3.36 of the KMIP v1.1 specification for more information.
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"""
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def __init__(self, application_namespace=None, application_data=None):
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"""
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Construct an ApplicationSpecificInformation object.
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Args:
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application_namespace (ApplicationNamespace): The name of a
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namespace supported by the server. Optional, defaults to None.
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application_data (ApplicationData): String data relevant to the
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specified namespace. Optional, defaults to None.
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"""
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super(ApplicationSpecificInformation, self).__init__(
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Tags.APPLICATION_SPECIFIC_INFORMATION)
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if application_namespace is None:
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self.application_namespace = ApplicationNamespace()
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else:
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self.application_namespace = application_namespace
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if application_data is None:
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self.application_data = ApplicationData()
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else:
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self.application_data = application_data
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self.validate()
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def read(self, istream):
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"""
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Read the data encoding the ApplicationSpecificInformation object and
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decode it into its constituent parts.
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Args:
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istream (Stream): A data stream containing encoded object data,
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supporting a read method; usually a BytearrayStream object.
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"""
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super(ApplicationSpecificInformation, self).read(istream)
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tstream = BytearrayStream(istream.read(self.length))
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self.application_namespace.read(tstream)
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self.application_data.read(tstream)
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self.is_oversized(tstream)
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self.validate()
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def write(self, ostream):
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"""
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Write the data encoding the ApplicationSpecificInformation object to a
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stream.
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Args:
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ostream (Stream): A data stream in which to encode object data,
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supporting a write method; usually a BytearrayStream object.
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"""
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tstream = BytearrayStream()
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self.application_namespace.write(tstream)
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self.application_data.write(tstream)
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self.length = tstream.length()
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super(ApplicationSpecificInformation, self).write(ostream)
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ostream.write(tstream.buffer)
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def validate(self):
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"""
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Error check the types of the different attributes of the
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ApplicationSpecificInformation object.
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"""
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self.__validate()
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def __validate(self):
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if not isinstance(self.application_namespace, ApplicationNamespace):
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msg = "invalid application namespace"
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msg += "; expected {0}, received {1}".format(
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ApplicationNamespace, self.application_namespace)
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raise TypeError(msg)
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if not isinstance(self.application_data, ApplicationData):
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msg = "invalid application data"
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msg += "; expected {0}, received {1}".format(
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ApplicationData, self.application_data)
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raise TypeError(msg)
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@classmethod
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def create(cls, application_namespace, application_data):
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"""
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Construct an ApplicationSpecificInformation object from provided data
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and namespace values.
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Args:
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application_namespace (str): The name of the application namespace.
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application_data (str): Application data related to the namespace.
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Returns:
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ApplicationSpecificInformation: The newly created set of
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application information.
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Example:
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>>> x = ApplicationSpecificInformation.create('namespace', 'data')
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>>> x.application_namespace.value
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'namespace'
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>>> x.application_data.value
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'data'
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"""
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namespace = ApplicationNamespace(application_namespace)
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data = ApplicationData(application_data)
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return ApplicationSpecificInformation(
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application_namespace=namespace, application_data=data)
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# 3.37
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class ContactInformation(TextString):
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def __init__(self, value=None):
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super(ContactInformation, self).__init__(
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value, Tags.CONTACT_INFORMATION)
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# 3.39
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# TODO (peter-hamilton) A CustomAttribute TextString is not sufficient to
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# TODO (peter-hamilton) cover all potential custom attributes. This is a
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# TODO (peter-hamilton) temporary stopgap.
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class CustomAttribute(TextString):
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def __init__(self, value=None):
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super(CustomAttribute, self).__init__(value, Tags.ATTRIBUTE_VALUE)
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