mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-26 23:00:36 +00:00
108 lines
3.0 KiB
Python
108 lines
3.0 KiB
Python
#
|
|
# This file is part of pyasn1 software.
|
|
#
|
|
# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
|
|
# License: http://snmplabs.com/pyasn1/license.html
|
|
#
|
|
from pyasn1 import error
|
|
from pyasn1.codec.cer import encoder
|
|
from pyasn1.type import univ
|
|
|
|
__all__ = ['encode']
|
|
|
|
|
|
class SetEncoder(encoder.SetEncoder):
|
|
@staticmethod
|
|
def _componentSortKey(componentAndType):
|
|
"""Sort SET components by tag
|
|
|
|
Sort depending on the actual Choice value (dynamic sort)
|
|
"""
|
|
component, asn1Spec = componentAndType
|
|
|
|
if asn1Spec is None:
|
|
compType = component
|
|
else:
|
|
compType = asn1Spec
|
|
|
|
if compType.typeId == univ.Choice.typeId and not compType.tagSet:
|
|
if asn1Spec is None:
|
|
return component.getComponent().tagSet
|
|
else:
|
|
# TODO: move out of sorting key function
|
|
names = [namedType.name for namedType in asn1Spec.componentType.namedTypes
|
|
if namedType.name in component]
|
|
if len(names) != 1:
|
|
raise error.PyAsn1Error(
|
|
'%s components for Choice at %r' % (len(names) and 'Multiple ' or 'None ', component))
|
|
|
|
# TODO: support nested CHOICE ordering
|
|
return asn1Spec[names[0]].tagSet
|
|
|
|
else:
|
|
return compType.tagSet
|
|
|
|
tagMap = encoder.tagMap.copy()
|
|
tagMap.update({
|
|
# Set & SetOf have same tags
|
|
univ.Set.tagSet: SetEncoder()
|
|
})
|
|
|
|
typeMap = encoder.typeMap.copy()
|
|
typeMap.update({
|
|
# Set & SetOf have same tags
|
|
univ.Set.typeId: SetEncoder()
|
|
})
|
|
|
|
|
|
class Encoder(encoder.Encoder):
|
|
fixedDefLengthMode = True
|
|
fixedChunkSize = 0
|
|
|
|
#: Turns ASN.1 object into DER octet stream.
|
|
#:
|
|
#: Takes any ASN.1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative)
|
|
#: walks all its components recursively and produces a DER octet stream.
|
|
#:
|
|
#: Parameters
|
|
#: ----------
|
|
#: value: either a Python or pyasn1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative)
|
|
#: A Python or pyasn1 object to encode. If Python object is given, `asnSpec`
|
|
#: parameter is required to guide the encoding process.
|
|
#:
|
|
#: Keyword Args
|
|
#: ------------
|
|
#: asn1Spec:
|
|
#: Optional ASN.1 schema or value object e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative
|
|
#:
|
|
#: Returns
|
|
#: -------
|
|
#: : :py:class:`bytes` (Python 3) or :py:class:`str` (Python 2)
|
|
#: Given ASN.1 object encoded into BER octet-stream
|
|
#:
|
|
#: Raises
|
|
#: ------
|
|
#: :py:class:`~pyasn1.error.PyAsn1Error`
|
|
#: On encoding errors
|
|
#:
|
|
#: Examples
|
|
#: --------
|
|
#: Encode Python value into DER with ASN.1 schema
|
|
#:
|
|
#: .. code-block:: pycon
|
|
#:
|
|
#: >>> seq = SequenceOf(componentType=Integer())
|
|
#: >>> encode([1, 2, 3], asn1Spec=seq)
|
|
#: b'0\t\x02\x01\x01\x02\x01\x02\x02\x01\x03'
|
|
#:
|
|
#: Encode ASN.1 value object into DER
|
|
#:
|
|
#: .. code-block:: pycon
|
|
#:
|
|
#: >>> seq = SequenceOf(componentType=Integer())
|
|
#: >>> seq.extend([1, 2, 3])
|
|
#: >>> encode(seq)
|
|
#: b'0\t\x02\x01\x01\x02\x01\x02\x02\x01\x03'
|
|
#:
|
|
encode = Encoder(tagMap, typeMap)
|