def colored(what, *args, **kwargs):
return what
-__version__ = "6.1"
+__version__ = "6.2"
__all__ = (
"Any",
LENINDEF = b"\x80" # length indefinite mark
LENINDEF_PP_CHAR = "I" if PY2 else "∞"
NAMEDTUPLE_KWARGS = {} if PY2 else {"module": __name__}
-SET01 = frozenset(("0", "1"))
+SET01 = frozenset("01")
+DECIMALS = frozenset(digits)
DECIMAL_SIGNS = ".,"
def pureint(value):
- i = int(value)
- if (value[0] in "+- ") or (value[-1] == " "):
+ if not set(value) <= DECIMALS:
raise ValueError("non-pure integer")
- return i
+ return int(value)
def fractions2float(fractions_raw):
pureint(fractions_raw)
octets,
))
- def _decode_chunk(self, lv, offset, decode_path):
- try:
- l, llen, v = len_decode(lv)
- except DecodeError as err:
- raise err.__class__(
- msg=err.msg,
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if l > len(v):
- raise NotEnoughData(
- "encoded length is longer than data",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if l == 0:
- raise NotEnoughData(
- "zero length",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- pad_size = byte2int(v)
- if l == 1 and pad_size != 0:
- raise DecodeError(
- "invalid empty value",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if pad_size > 7:
- raise DecodeError(
- "too big pad",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if byte2int(v[l - 1:l]) & ((1 << pad_size) - 1) != 0:
- raise DecodeError(
- "invalid pad",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- v, tail = v[:l], v[l:]
- obj = self.__class__(
- value=((len(v) - 1) * 8 - pad_size, v[1:].tobytes()),
- impl=self.tag,
- expl=self._expl,
- default=self.default,
- optional=self.optional,
- _specs=self.specs,
- _decoded=(offset, llen, l),
- )
- return obj, tail
-
def _decode(self, tlv, offset, decode_path, ctx, tag_only):
try:
t, tlen, lv = tag_strip(tlv)
if t == self.tag:
if tag_only: # pragma: no cover
return None
- return self._decode_chunk(lv, offset, decode_path)
- if t == self.tag_constructed:
- if not ctx.get("bered", False):
- raise DecodeError(
- "unallowed BER constructed encoding",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if tag_only: # pragma: no cover
- return None
- lenindef = False
try:
l, llen, v = len_decode(lv)
- except LenIndefForm:
- llen, l, v = 1, 0, lv[1:]
- lenindef = True
except DecodeError as err:
raise err.__class__(
msg=err.msg,
decode_path=decode_path,
offset=offset,
)
- if not lenindef and l == 0:
+ if l == 0:
raise NotEnoughData(
"zero length",
klass=self.__class__,
decode_path=decode_path,
offset=offset,
)
- chunks = []
- sub_offset = offset + tlen + llen
- vlen = 0
- while True:
- if lenindef:
- if v[:EOC_LEN].tobytes() == EOC:
- break
- else:
- if vlen == l:
- break
- if vlen > l:
- raise DecodeError(
- "chunk out of bounds",
- klass=self.__class__,
- decode_path=decode_path + (str(len(chunks) - 1),),
- offset=chunks[-1].offset,
- )
- sub_decode_path = decode_path + (str(len(chunks)),)
- try:
- chunk, v_tail = BitString().decode(
- v,
- offset=sub_offset,
- decode_path=sub_decode_path,
- leavemm=True,
- ctx=ctx,
- _ctx_immutable=False,
- )
- except TagMismatch:
- raise DecodeError(
- "expected BitString encoded chunk",
- klass=self.__class__,
- decode_path=sub_decode_path,
- offset=sub_offset,
- )
- chunks.append(chunk)
- sub_offset += chunk.tlvlen
- vlen += chunk.tlvlen
- v = v_tail
- if len(chunks) == 0:
+ pad_size = byte2int(v)
+ if l == 1 and pad_size != 0:
raise DecodeError(
- "no chunks",
+ "invalid empty value",
klass=self.__class__,
decode_path=decode_path,
offset=offset,
)
- values = []
- bit_len = 0
- for chunk_i, chunk in enumerate(chunks[:-1]):
- if chunk.bit_len % 8 != 0:
- raise DecodeError(
- "BitString chunk is not multiple of 8 bits",
- klass=self.__class__,
- decode_path=decode_path + (str(chunk_i),),
- offset=chunk.offset,
- )
- values.append(bytes(chunk))
- bit_len += chunk.bit_len
- chunk_last = chunks[-1]
- values.append(bytes(chunk_last))
- bit_len += chunk_last.bit_len
+ if pad_size > 7:
+ raise DecodeError(
+ "too big pad",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if byte2int(v[l - 1:l]) & ((1 << pad_size) - 1) != 0:
+ raise DecodeError(
+ "invalid pad",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ v, tail = v[:l], v[l:]
obj = self.__class__(
- value=(bit_len, b"".join(values)),
+ value=((len(v) - 1) * 8 - pad_size, v[1:].tobytes()),
impl=self.tag,
expl=self._expl,
default=self.default,
optional=self.optional,
_specs=self.specs,
- _decoded=(offset, llen, vlen + (EOC_LEN if lenindef else 0)),
+ _decoded=(offset, llen, l),
)
- obj.lenindef = lenindef
- obj.ber_encoded = True
- return obj, (v[EOC_LEN:] if lenindef else v)
- raise TagMismatch(
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
+ return obj, tail
+ if t != self.tag_constructed:
+ raise TagMismatch(
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if not ctx.get("bered", False):
+ raise DecodeError(
+ "unallowed BER constructed encoding",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if tag_only: # pragma: no cover
+ return None
+ lenindef = False
+ try:
+ l, llen, v = len_decode(lv)
+ except LenIndefForm:
+ llen, l, v = 1, 0, lv[1:]
+ lenindef = True
+ except DecodeError as err:
+ raise err.__class__(
+ msg=err.msg,
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if l > len(v):
+ raise NotEnoughData(
+ "encoded length is longer than data",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if not lenindef and l == 0:
+ raise NotEnoughData(
+ "zero length",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ chunks = []
+ sub_offset = offset + tlen + llen
+ vlen = 0
+ while True:
+ if lenindef:
+ if v[:EOC_LEN].tobytes() == EOC:
+ break
+ else:
+ if vlen == l:
+ break
+ if vlen > l:
+ raise DecodeError(
+ "chunk out of bounds",
+ klass=self.__class__,
+ decode_path=decode_path + (str(len(chunks) - 1),),
+ offset=chunks[-1].offset,
+ )
+ sub_decode_path = decode_path + (str(len(chunks)),)
+ try:
+ chunk, v_tail = BitString().decode(
+ v,
+ offset=sub_offset,
+ decode_path=sub_decode_path,
+ leavemm=True,
+ ctx=ctx,
+ _ctx_immutable=False,
+ )
+ except TagMismatch:
+ raise DecodeError(
+ "expected BitString encoded chunk",
+ klass=self.__class__,
+ decode_path=sub_decode_path,
+ offset=sub_offset,
+ )
+ chunks.append(chunk)
+ sub_offset += chunk.tlvlen
+ vlen += chunk.tlvlen
+ v = v_tail
+ if len(chunks) == 0:
+ raise DecodeError(
+ "no chunks",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ values = []
+ bit_len = 0
+ for chunk_i, chunk in enumerate(chunks[:-1]):
+ if chunk.bit_len % 8 != 0:
+ raise DecodeError(
+ "BitString chunk is not multiple of 8 bits",
+ klass=self.__class__,
+ decode_path=decode_path + (str(chunk_i),),
+ offset=chunk.offset,
+ )
+ values.append(bytes(chunk))
+ bit_len += chunk.bit_len
+ chunk_last = chunks[-1]
+ values.append(bytes(chunk_last))
+ bit_len += chunk_last.bit_len
+ obj = self.__class__(
+ value=(bit_len, b"".join(values)),
+ impl=self.tag,
+ expl=self._expl,
+ default=self.default,
+ optional=self.optional,
+ _specs=self.specs,
+ _decoded=(offset, llen, vlen + (EOC_LEN if lenindef else 0)),
)
+ obj.lenindef = lenindef
+ obj.ber_encoded = True
+ return obj, (v[EOC_LEN:] if lenindef else v)
def __repr__(self):
return pp_console_row(next(self.pps()))
self._value,
))
- def _decode_chunk(self, lv, offset, decode_path, ctx):
- try:
- l, llen, v = len_decode(lv)
- except DecodeError as err:
- raise err.__class__(
- msg=err.msg,
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if l > len(v):
- raise NotEnoughData(
- "encoded length is longer than data",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- v, tail = v[:l], v[l:]
- try:
- obj = self.__class__(
- value=v.tobytes(),
- bounds=(self._bound_min, self._bound_max),
- impl=self.tag,
- expl=self._expl,
- default=self.default,
- optional=self.optional,
- _decoded=(offset, llen, l),
- ctx=ctx,
- )
- except DecodeError as err:
- raise DecodeError(
- msg=err.msg,
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- except BoundsError as err:
- raise DecodeError(
- msg=str(err),
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- return obj, tail
-
def _decode(self, tlv, offset, decode_path, ctx, tag_only):
try:
t, tlen, lv = tag_strip(tlv)
if t == self.tag:
if tag_only:
return None
- return self._decode_chunk(lv, offset, decode_path, ctx)
- if t == self.tag_constructed:
- if not ctx.get("bered", False):
- raise DecodeError(
- "unallowed BER constructed encoding",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
- if tag_only:
- return None
- lenindef = False
try:
l, llen, v = len_decode(lv)
- except LenIndefForm:
- llen, l, v = 1, 0, lv[1:]
- lenindef = True
except DecodeError as err:
raise err.__class__(
msg=err.msg,
decode_path=decode_path,
offset=offset,
)
- chunks = []
- sub_offset = offset + tlen + llen
- vlen = 0
- while True:
- if lenindef:
- if v[:EOC_LEN].tobytes() == EOC:
- break
- else:
- if vlen == l:
- break
- if vlen > l:
- raise DecodeError(
- "chunk out of bounds",
- klass=self.__class__,
- decode_path=decode_path + (str(len(chunks) - 1),),
- offset=chunks[-1].offset,
- )
- sub_decode_path = decode_path + (str(len(chunks)),)
- try:
- chunk, v_tail = OctetString().decode(
- v,
- offset=sub_offset,
- decode_path=sub_decode_path,
- leavemm=True,
- ctx=ctx,
- _ctx_immutable=False,
- )
- except TagMismatch:
- raise DecodeError(
- "expected OctetString encoded chunk",
- klass=self.__class__,
- decode_path=sub_decode_path,
- offset=sub_offset,
- )
- chunks.append(chunk)
- sub_offset += chunk.tlvlen
- vlen += chunk.tlvlen
- v = v_tail
+ v, tail = v[:l], v[l:]
try:
obj = self.__class__(
- value=b"".join(bytes(chunk) for chunk in chunks),
+ value=v.tobytes(),
bounds=(self._bound_min, self._bound_max),
impl=self.tag,
expl=self._expl,
default=self.default,
optional=self.optional,
- _decoded=(offset, llen, vlen + (EOC_LEN if lenindef else 0)),
+ _decoded=(offset, llen, l),
ctx=ctx,
)
except DecodeError as err:
decode_path=decode_path,
offset=offset,
)
- obj.lenindef = lenindef
- obj.ber_encoded = True
- return obj, (v[EOC_LEN:] if lenindef else v)
- raise TagMismatch(
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
+ return obj, tail
+ if t != self.tag_constructed:
+ raise TagMismatch(
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if not ctx.get("bered", False):
+ raise DecodeError(
+ "unallowed BER constructed encoding",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if tag_only:
+ return None
+ lenindef = False
+ try:
+ l, llen, v = len_decode(lv)
+ except LenIndefForm:
+ llen, l, v = 1, 0, lv[1:]
+ lenindef = True
+ except DecodeError as err:
+ raise err.__class__(
+ msg=err.msg,
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ if l > len(v):
+ raise NotEnoughData(
+ "encoded length is longer than data",
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ chunks = []
+ sub_offset = offset + tlen + llen
+ vlen = 0
+ while True:
+ if lenindef:
+ if v[:EOC_LEN].tobytes() == EOC:
+ break
+ else:
+ if vlen == l:
+ break
+ if vlen > l:
+ raise DecodeError(
+ "chunk out of bounds",
+ klass=self.__class__,
+ decode_path=decode_path + (str(len(chunks) - 1),),
+ offset=chunks[-1].offset,
+ )
+ sub_decode_path = decode_path + (str(len(chunks)),)
+ try:
+ chunk, v_tail = OctetString().decode(
+ v,
+ offset=sub_offset,
+ decode_path=sub_decode_path,
+ leavemm=True,
+ ctx=ctx,
+ _ctx_immutable=False,
+ )
+ except TagMismatch:
+ raise DecodeError(
+ "expected OctetString encoded chunk",
+ klass=self.__class__,
+ decode_path=sub_decode_path,
+ offset=sub_offset,
+ )
+ chunks.append(chunk)
+ sub_offset += chunk.tlvlen
+ vlen += chunk.tlvlen
+ v = v_tail
+ try:
+ obj = self.__class__(
+ value=b"".join(bytes(chunk) for chunk in chunks),
+ bounds=(self._bound_min, self._bound_max),
+ impl=self.tag,
+ expl=self._expl,
+ default=self.default,
+ optional=self.optional,
+ _decoded=(offset, llen, vlen + (EOC_LEN if lenindef else 0)),
+ ctx=ctx,
+ )
+ except DecodeError as err:
+ raise DecodeError(
+ msg=err.msg,
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ except BoundsError as err:
+ raise DecodeError(
+ msg=str(err),
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
+ obj.lenindef = lenindef
+ obj.ber_encoded = True
+ return obj, (v[EOC_LEN:] if lenindef else v)
def __repr__(self):
return pp_console_row(next(self.pps()))
tail = v[EOC_LEN:]
obj.lenindef = True
obj._value = values
- if not obj.ready:
- raise DecodeError(
- "not all values are ready",
- klass=self.__class__,
- decode_path=decode_path,
- offset=offset,
- )
+ for name, spec in iteritems(self.specs):
+ if name not in values and not spec.optional:
+ raise DecodeError(
+ "%s value is not ready" % name,
+ klass=self.__class__,
+ decode_path=decode_path,
+ offset=offset,
+ )
obj.ber_encoded = ber_encoded
return obj, tail