(and its derivatives), ``SET``, ``SET OF``, ``UTCTime``, ``GeneralizedTime``
could be BERed.
-
.. _definedby:
DEFINED BY
from datetime import datetime
from datetime import timedelta
from math import ceil
+from operator import attrgetter
from string import ascii_letters
from string import digits
from sys import version_info
BasicState = namedtuple("BasicState", (
"version",
"tag",
+ "tag_order",
"expl",
"default",
"optional",
"""
__slots__ = (
"tag",
+ "_tag_order",
"_value",
"_expl",
"default",
self._expl = getattr(self, "expl", None) if expl is None else expl
if self.tag != self.tag_default and self._expl is not None:
raise ValueError("implicit and explicit tags can not be set simultaneously")
+ if self.tag is None:
+ self._tag_order = None
+ else:
+ tag_class, _, tag_num = tag_decode(
+ self.tag if self._expl is None else self._expl
+ )
+ self._tag_order = (tag_class, tag_num)
if default is not None:
optional = True
self.optional = optional
if state.version != __version__:
raise ValueError("data is pickled by different PyDERASN version")
self.tag = state.tag
+ self._tag_order = state.tag_order
self._expl = state.expl
self.default = state.default
self.optional = state.optional
self.lenindef = state.lenindef
self.ber_encoded = state.ber_encoded
+ @property
+ def tag_order(self):
+ """Tag's (class, number) used for DER/CER sorting
+ """
+ return self._tag_order
+
@property
def tlen(self):
"""See :ref:`decoding`
return BooleanState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
return IntegerState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
return BitStringState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
return OctetStringState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
return NullState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
return ObjectIdentifierState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
self.default = default_obj
if value is None:
self._value = copy(default_obj._value)
+ if self._expl is not None:
+ tag_class, _, tag_num = tag_decode(self._expl)
+ self._tag_order = (tag_class, tag_num)
def _value_sanitize(self, value):
if (value.__class__ == tuple) and len(value) == 2:
return ChoiceState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
self._assert_ready()
return self._value[1]
+ @property
+ def tag_order(self):
+ self._assert_ready()
+ return self._value[1].tag_order if self._tag_order is None else self._tag_order
+
def __getitem__(self, key):
if key not in self.specs:
raise ObjUnknown(key)
"""
:param value: set the value. Either any kind of pyderasn's
**ready** object, or bytes. Pay attention that
- **no** validation is performed is raw binary value
- is valid TLV
+ **no** validation is performed if raw binary value
+ is valid TLV, except just tag decoding
:param bytes expl: override default tag with ``EXPLICIT`` one
:param bool optional: is object ``OPTIONAL`` in sequence
"""
super(Any, self).__init__(None, expl, None, optional, _decoded)
- self._value = None if value is None else self._value_sanitize(value)
+ if value is None:
+ self._value = None
+ else:
+ value = self._value_sanitize(value)
+ self._value = value
+ if self._expl is None:
+ if value.__class__ == binary_type:
+ tag_class, _, tag_num = tag_decode(tag_strip(value)[0])
+ else:
+ tag_class, tag_num = value.tag_order
+ else:
+ tag_class, _, tag_num = tag_decode(self._expl)
+ self._tag_order = (tag_class, tag_num)
self.defined = None
def _value_sanitize(self, value):
if value.__class__ == binary_type:
+ if len(value) == 0:
+ raise ValueError("Any value can not be empty")
return value
if isinstance(value, self.__class__):
return value._value
def ready(self):
return self._value is not None
+ @property
+ def tag_order(self):
+ self._assert_ready()
+ return self._tag_order
+
@property
def bered(self):
if self.expl_lenindef or self.lenindef:
return AnyState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
None,
self.optional,
return SequenceState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
asn1_type_name = "SET"
def _encode(self):
- raws = [v.encode() for v in self._values_for_encoding()]
- raws.sort()
- v = b"".join(raws)
+ v = b"".join(value.encode() for value in sorted(
+ self._values_for_encoding(),
+ key=attrgetter("tag_order"),
+ ))
return b"".join((self.tag, len_encode(len(v)), v))
def _decode(self, tlv, offset, decode_path, ctx, tag_only):
ber_encoded = False
ctx_allow_default_values = ctx.get("allow_default_values", False)
ctx_allow_unordered_set = ctx.get("allow_unordered_set", False)
- value_prev = memoryview(v[:0])
+ tag_order_prev = (0, 0)
_specs_items = copy(self.specs)
while len(v) > 0:
ctx=ctx,
_ctx_immutable=False,
)
+ value_tag_order = value.tag_order
value_len = value.fulllen
- if value_prev.tobytes() > v[:value_len].tobytes():
+ if tag_order_prev >= value_tag_order:
if ctx_bered or ctx_allow_unordered_set:
ber_encoded = True
else:
)
values[name] = value
del _specs_items[name]
- value_prev = v[:value_len]
+ tag_order_prev = value_tag_order
sub_offset += value_len
vlen += value_len
v = v_tail
return SequenceOfState(
__version__,
self.tag,
+ self._tag_order,
self._expl,
self.default,
self.optional,
asn1_type_name = "SET OF"
def _encode(self):
- raws = [v.encode() for v in self._values_for_encoding()]
- raws.sort()
- v = b"".join(raws)
+ v = b"".join(sorted(v.encode() for v in self._values_for_encoding()))
return b"".join((self.tag, len_encode(len(v)), v))
def _decode(self, tlv, offset, decode_path, ctx, tag_only):