# coding: utf-8
-# PyDERASN -- Python ASN.1 DER codec with abstract structures
+# PyDERASN -- Python ASN.1 DER/BER codec with abstract structures
# Copyright (C) 2017-2018 Sergey Matveev <stargrave@stargrave.org>
#
# This program is free software: you can redistribute it and/or modify
from pyderasn import InvalidValueType
from pyderasn import len_decode
from pyderasn import len_encode
+from pyderasn import LEN_YYMMDDHHMMSSZ
+from pyderasn import LEN_YYYYMMDDHHMMSSDMZ
+from pyderasn import LEN_YYYYMMDDHHMMSSZ
+from pyderasn import LENINDEF
from pyderasn import NotEnoughData
from pyderasn import Null
from pyderasn import NumericString
settings.register_profile("local", settings(
deadline=5000,
- perform_health_check=False,
))
settings.load_profile("local")
LONG_TEST_MAX_EXAMPLES = settings().max_examples * 4
TagClassUniversal,
))
tag_forms = sampled_from((TagFormConstructed, TagFormPrimitive))
+decode_path_strat = lists(integers(), max_size=3).map(
+ lambda decode_path: tuple(str(dp) for dp in decode_path)
+)
class TestHex(TestCase):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Boolean().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_expl_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Boolean(expl=Boolean.tag_default).decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Boolean().decode(
Boolean.tag_default + len_encode(l)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_expl_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Boolean(expl=Boolean.tag_default).decode(
Boolean.tag_default + len_encode(l)[:-1],
self.assertTrue(obj.bered)
self.assertFalse(obj.lenindef)
+ @given(
+ integers(min_value=1).map(tag_ctxc),
+ binary().filter(lambda x: not x.startswith(EOC)),
+ )
+ def test_ber_expl_no_eoc(self, expl, junk):
+ encoded = expl + LENINDEF + Boolean(False).encode()
+ with assertRaisesRegex(self, DecodeError, "no EOC"):
+ Boolean(expl=expl).decode(encoded + junk, ctx={"bered": True})
+ obj, tail = Boolean(expl=expl).decode(
+ encoded + EOC + junk,
+ ctx={"bered": True},
+ )
+ self.assertTrue(obj.expl_lenindef)
+ self.assertSequenceEqual(tail, junk)
+
@given(
integers(min_value=1).map(tag_ctxc),
lists(
for value in values:
encoded += (
expl +
- b"\x80" +
+ LENINDEF +
Boolean(value).encode() +
EOC
)
with self.assertRaises(BoundsError) as err:
Integer(value=values[0], bounds=(values[1], values[2]))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ Integer(bounds=(values[1], values[2])).decode(
+ Integer(values[0]).encode()
+ )
+ repr(err.exception)
with self.assertRaises(BoundsError) as err:
Integer(value=values[2], bounds=(values[0], values[1]))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ Integer(bounds=(values[0], values[1])).decode(
+ Integer(values[2]).encode()
+ )
+ repr(err.exception)
@given(data_strategy())
def test_call(self, d):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Integer().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Integer().decode(
Integer.tag_default + len_encode(l)[:-1],
@given(
sets(integers(), min_size=2, max_size=2),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_invalid_bounds_while_decoding(self, ints, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
value, bound_min = list(sorted(ints))
class Int(Integer):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
BitString().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
BitString().decode(
BitString.tag_default + len_encode(l)[:-1],
max_size=3,
),
lists(booleans(), min_size=1),
+ binary(),
)
- def test_constructed(self, impl, chunk_inputs, chunk_last_bits):
+ def test_constructed(self, impl, chunk_inputs, chunk_last_bits, junk):
def chunk_constructed(contents):
return (
tag_encode(form=TagFormConstructed, num=3) +
- b"\x80" +
+ LENINDEF +
b"".join(BitString(content).encode() for content in contents) +
EOC
)
bit_len_expected += chunk_last.bit_len
encoded_indefinite = (
tag_encode(form=TagFormConstructed, num=impl) +
- b"\x80" +
+ LENINDEF +
b"".join(chunks) +
chunk_last.encode() +
EOC
(False, encoded_definite),
):
obj, tail = BitString(impl=tag_encode(impl)).decode(
- encoded, ctx={"bered": True}
+ encoded + junk,
+ ctx={"bered": True},
)
- self.assertSequenceEqual(tail, b"")
+ self.assertSequenceEqual(tail, junk)
self.assertEqual(obj.bit_len, bit_len_expected)
self.assertSequenceEqual(bytes(obj), payload_expected)
self.assertTrue(obj.bered)
self.assertEqual(obj.lenindef, lenindef_expected)
self.assertEqual(len(encoded), obj.tlvlen)
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ )
+ def test_ber_definite_too_short(self, offset, decode_path):
+ with assertRaisesRegex(self, DecodeError, "longer than data") as err:
+ BitString().decode(
+ tag_encode(3, form=TagFormConstructed) + len_encode(1),
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path)
+ self.assertEqual(err.exception.offset, offset)
+
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ )
+ def test_ber_definite_no_data(self, offset, decode_path):
+ with assertRaisesRegex(self, DecodeError, "zero length") as err:
+ BitString().decode(
+ tag_encode(3, form=TagFormConstructed) + len_encode(0),
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path)
+ self.assertEqual(err.exception.offset, offset)
+
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ integers(min_value=1, max_value=3),
+ )
+ def test_ber_indefinite_no_eoc(self, offset, decode_path, chunks):
+ bs = BitString(b"data").encode()
+ with self.assertRaises(NotEnoughData) as err:
+ BitString().decode(
+ tag_encode(3, form=TagFormConstructed) + LENINDEF + chunks * bs,
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path + (str(chunks),))
+ self.assertEqual(err.exception.offset, offset + 1 + 1 + chunks * len(bs))
+
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ integers(min_value=1, max_value=3),
+ )
+ def test_ber_definite_chunk_out_of_bounds(self, offset, decode_path, chunks):
+ bs = BitString(b"data").encode()
+ bs_longer = BitString(b"data-longer").encode()
+ with assertRaisesRegex(self, DecodeError, "chunk out of bounds") as err:
+ BitString().decode(
+ (
+ tag_encode(3, form=TagFormConstructed) +
+ len_encode((chunks + 1) * len(bs)) +
+ chunks * bs +
+ bs_longer
+ ),
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path + (str(chunks),))
+ self.assertEqual(err.exception.offset, offset + 1 + 1 + chunks * len(bs))
+
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ )
+ def test_ber_indefinite_no_chunks(self, offset, decode_path):
+ with assertRaisesRegex(self, DecodeError, "no chunks") as err:
+ BitString().decode(
+ tag_encode(3, form=TagFormConstructed) + LENINDEF + EOC,
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path)
+ self.assertEqual(err.exception.offset, offset)
+
+ @given(data_strategy())
+ def test_ber_indefinite_not_multiple(self, d):
+ bs_short = BitString("'A'H").encode()
+ bs_full = BitString("'AA'H").encode()
+ chunks = [bs_full for _ in range(d.draw(integers(min_value=0, max_value=3)))]
+ chunks.append(bs_short)
+ d.draw(permutations(chunks))
+ chunks.append(bs_short)
+ offset = d.draw(integers(min_value=0))
+ decode_path = d.draw(decode_path_strat)
+ with assertRaisesRegex(self, DecodeError, "multiple of 8 bits") as err:
+ BitString().decode(
+ (
+ tag_encode(3, form=TagFormConstructed) +
+ LENINDEF +
+ b"".join(chunks) +
+ EOC
+ ),
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(
+ err.exception.decode_path,
+ decode_path + (str(chunks.index(bs_short)),),
+ )
+ self.assertEqual(
+ err.exception.offset,
+ offset + 1 + 1 + chunks.index(bs_short) * len(bs_full),
+ )
+
def test_x690_vector(self):
vector = BitString("'0A3B5F291CD'H")
obj, tail = BitString().decode(hexdec("0307040A3B5F291CD0"))
with self.assertRaises(BoundsError) as err:
OctetString(value=value, bounds=(bound_min, bound_max))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ OctetString(bounds=(bound_min, bound_max)).decode(
+ OctetString(value).encode()
+ )
+ repr(err.exception)
value = d.draw(binary(min_size=bound_max + 1))
with self.assertRaises(BoundsError) as err:
OctetString(value=value, bounds=(bound_min, bound_max))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ OctetString(bounds=(bound_min, bound_max)).decode(
+ OctetString(value).encode()
+ )
+ repr(err.exception)
@given(data_strategy())
def test_call(self, d):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
OctetString().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
OctetString().decode(
OctetString.tag_default + len_encode(l)[:-1],
@given(
sets(integers(min_value=0, max_value=10), min_size=2, max_size=2),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_invalid_bounds_while_decoding(self, ints, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
value, bound_min = list(sorted(ints))
class String(OctetString):
min_size=1,
max_size=3,
),
+ binary(),
)
- def test_constructed(self, impl, chunk_inputs):
+ def test_constructed(self, impl, chunk_inputs, junk):
def chunk_constructed(contents):
return (
tag_encode(form=TagFormConstructed, num=4) +
- b"\x80" +
+ LENINDEF +
b"".join(OctetString(content).encode() for content in contents) +
EOC
)
payload_expected += payload
encoded_indefinite = (
tag_encode(form=TagFormConstructed, num=impl) +
- b"\x80" +
+ LENINDEF +
b"".join(chunks) +
EOC
)
(False, encoded_definite),
):
obj, tail = OctetString(impl=tag_encode(impl)).decode(
- encoded, ctx={"bered": True}
+ encoded + junk,
+ ctx={"bered": True},
)
- self.assertSequenceEqual(tail, b"")
+ self.assertSequenceEqual(tail, junk)
self.assertSequenceEqual(bytes(obj), payload_expected)
self.assertTrue(obj.bered)
self.assertEqual(obj.lenindef, lenindef_expected)
self.assertEqual(len(encoded), obj.tlvlen)
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ )
+ def test_ber_definite_too_short(self, offset, decode_path):
+ with assertRaisesRegex(self, DecodeError, "longer than data") as err:
+ OctetString().decode(
+ tag_encode(4, form=TagFormConstructed) + len_encode(1),
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path)
+ self.assertEqual(err.exception.offset, offset)
+
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ integers(min_value=1, max_value=3),
+ )
+ def test_ber_indefinite_no_eoc(self, offset, decode_path, chunks):
+ bs = OctetString(b"data").encode()
+ with self.assertRaises(NotEnoughData) as err:
+ OctetString().decode(
+ tag_encode(4, form=TagFormConstructed) + LENINDEF + chunks * bs,
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path + (str(chunks),))
+ self.assertEqual(err.exception.offset, offset + 1 + 1 + chunks * len(bs))
+
+ @given(
+ integers(min_value=0),
+ decode_path_strat,
+ integers(min_value=1, max_value=3),
+ )
+ def test_ber_definite_chunk_out_of_bounds(self, offset, decode_path, chunks):
+ bs = OctetString(b"data").encode()
+ bs_longer = OctetString(b"data-longer").encode()
+ with assertRaisesRegex(self, DecodeError, "chunk out of bounds") as err:
+ OctetString().decode(
+ (
+ tag_encode(4, form=TagFormConstructed) +
+ len_encode((chunks + 1) * len(bs)) +
+ chunks * bs +
+ bs_longer
+ ),
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.decode_path, decode_path + (str(chunks),))
+ self.assertEqual(err.exception.offset, offset + 1 + 1 + chunks * len(bs))
+
@composite
def null_values_strategy(draw, do_expl=False):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Null().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Null().decode(
Null.tag_default + len_encode(l)[:-1],
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
ObjectIdentifier().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
ObjectIdentifier().decode(
ObjectIdentifier.tag_default + len_encode(l)[:-1],
with self.assertRaises(BoundsError) as err:
self.base_klass(value=value, bounds=(bound_min, bound_max))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ self.base_klass(bounds=(bound_min, bound_max)).decode(
+ self.base_klass(value).encode()
+ )
+ repr(err.exception)
value = d.draw(text(alphabet=self.text_alphabet(), min_size=bound_max + 1))
with self.assertRaises(BoundsError) as err:
self.base_klass(value=value, bounds=(bound_min, bound_max))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ self.base_klass(bounds=(bound_min, bound_max)).decode(
+ self.base_klass(value).encode()
+ )
+ repr(err.exception)
@given(data_strategy())
def test_call(self, d):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
self.base_klass().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
self.base_klass().decode(
self.base_klass.tag_default + len_encode(l)[:-1],
@given(
sets(integers(min_value=0, max_value=10), min_size=2, max_size=2),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_invalid_bounds_while_decoding(self, ints, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
value, bound_min = list(sorted(ints))
class String(self.base_klass):
@given(
sets(integers(min_value=0, max_value=10), min_size=2, max_size=2),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_invalid_bounds_while_decoding(self, ints, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
value, bound_min = list(sorted(ints))
class String(self.base_klass):
datetime(2010, 1, 2, 3, 4, 5, 0),
)
+ @given(
+ binary(
+ min_size=(LEN_YYYYMMDDHHMMSSZ - 1) // 2,
+ max_size=(LEN_YYYYMMDDHHMMSSZ - 1) // 2,
+ ),
+ binary(min_size=1, max_size=1),
+ binary(
+ min_size=(LEN_YYYYMMDDHHMMSSZ - 1) // 2,
+ max_size=(LEN_YYYYMMDDHHMMSSZ - 1) // 2,
+ ),
+ )
+ def test_junk(self, part0, part1, part2):
+ junk = part0 + part1 + part2
+ assume(not (set(junk) <= set(digits.encode("ascii"))))
+ with self.assertRaises(DecodeError):
+ GeneralizedTime().decode(
+ GeneralizedTime.tag_default +
+ len_encode(len(junk)) +
+ junk
+ )
+
+ @given(
+ binary(
+ min_size=(LEN_YYYYMMDDHHMMSSDMZ - 1) // 2,
+ max_size=(LEN_YYYYMMDDHHMMSSDMZ - 1) // 2,
+ ),
+ binary(min_size=1, max_size=1),
+ binary(
+ min_size=(LEN_YYYYMMDDHHMMSSDMZ - 1) // 2,
+ max_size=(LEN_YYYYMMDDHHMMSSDMZ - 1) // 2,
+ ),
+ )
+ def test_junk_dm(self, part0, part1, part2):
+ junk = part0 + part1 + part2
+ assume(not (set(junk) <= set(digits.encode("ascii"))))
+ with self.assertRaises(DecodeError):
+ GeneralizedTime().decode(
+ GeneralizedTime.tag_default +
+ len_encode(len(junk)) +
+ junk
+ )
+
class TestUTCTime(TimeMixin, CommonMixin, TestCase):
base_klass = UTCTime
1900 + year,
)
+ @given(
+ binary(
+ min_size=(LEN_YYMMDDHHMMSSZ - 1) // 2,
+ max_size=(LEN_YYMMDDHHMMSSZ - 1) // 2,
+ ),
+ binary(min_size=1, max_size=1),
+ binary(
+ min_size=(LEN_YYMMDDHHMMSSZ - 1) // 2,
+ max_size=(LEN_YYMMDDHHMMSSZ - 1) // 2,
+ ),
+ )
+ def test_junk(self, part0, part1, part2):
+ junk = part0 + part1 + part2
+ assume(not (set(junk) <= set(digits.encode("ascii"))))
+ with self.assertRaises(DecodeError):
+ UTCTime().decode(
+ UTCTime.tag_default +
+ len_encode(len(junk)) +
+ junk
+ )
+
@composite
def any_values_strategy(draw, do_expl=False):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Any().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
Any().decode(
Any.tag_default + len_encode(l)[:-1],
self.assertEqual(obj_decoded.llen, 0)
self.assertEqual(obj_decoded.vlen, len(value))
+ @given(
+ integers(min_value=1).map(tag_ctxc),
+ integers(min_value=0, max_value=3),
+ integers(min_value=0),
+ decode_path_strat,
+ binary(),
+ )
+ def test_indefinite(self, expl, chunks, offset, decode_path, junk):
+ chunk = Boolean(False, expl=expl).encode()
+ encoded = (
+ OctetString.tag_default +
+ LENINDEF +
+ b"".join([chunk] * chunks) +
+ EOC
+ )
+ obj, tail = Any().decode(
+ encoded + junk,
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertSequenceEqual(tail, junk)
+ self.assertEqual(obj.offset, offset)
+ self.assertEqual(obj.tlvlen, len(encoded))
+ with self.assertRaises(NotEnoughData) as err:
+ Any().decode(
+ encoded[:-1],
+ offset=offset,
+ decode_path=decode_path,
+ ctx={"bered": True},
+ )
+ self.assertEqual(err.exception.offset, offset + 1 + 1 + len(chunk) * chunks)
+ self.assertEqual(err.exception.decode_path, decode_path + (str(chunks),))
+
@composite
def choice_values_strategy(draw, value_required=False, schema=None, do_expl=False):
if schema is None:
names = list(draw(sets(text_letters(), min_size=1, max_size=5)))
- tags = [tag_encode(tag) for tag in draw(sets(
- integers(min_value=0),
+ tags = [{tag_type: tag_value} for tag_type, tag_value in draw(sets(
+ one_of(
+ tuples(just("impl"), integers(min_value=0).map(tag_encode)),
+ tuples(just("expl"), integers(min_value=0).map(tag_ctxp)),
+ ),
min_size=len(names),
max_size=len(names),
))]
- schema = [(name, Integer(impl=tag)) for name, tag in zip(names, tags)]
+ schema = [
+ (name, Integer(**tag_kwargs))
+ for name, tag_kwargs in zip(names, tags)
+ ]
value = None
if value_required or draw(booleans()):
value = draw(tuples(
self.assertEqual(obj_decoded.expl_offset, offset)
self.assertSequenceEqual(
obj_expled_encoded[
- obj_decoded.value.offset - offset:
- obj_decoded.value.offset + obj_decoded.value.tlvlen - offset
+ obj_decoded.value.fulloffset - offset:
+ obj_decoded.value.fulloffset + obj_decoded.value.fulllen - offset
],
obj_encoded,
)
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
self.base_klass().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
self.base_klass().decode(
self.base_klass.tag_default + len_encode(l)[:-1],
self._assert_expects(seq, expects)
repr(seq)
pprint(seq)
+ self.assertTrue(seq.ready)
seq_encoded = seq.encode()
seq_decoded, tail = seq.decode(seq_encoded + tail_junk)
- self.assertEqual(tail, tail_junk)
- self.assertTrue(seq.ready)
- self._assert_expects(seq_decoded, expects)
- self.assertEqual(seq, seq_decoded)
- self.assertEqual(seq_decoded.encode(), seq_encoded)
- for expect in expects:
- if not expect["presented"]:
- self.assertNotIn(expect["name"], seq_decoded)
- continue
- self.assertIn(expect["name"], seq_decoded)
- obj = seq_decoded[expect["name"]]
- self.assertTrue(obj.decoded)
- offset = obj.expl_offset if obj.expled else obj.offset
- tlvlen = obj.expl_tlvlen if obj.expled else obj.tlvlen
- self.assertSequenceEqual(
- seq_encoded[offset:offset + tlvlen],
- obj.encode(),
- )
+ self.assertFalse(seq_decoded.lenindef)
+ self.assertFalse(seq_decoded.bered)
+
+ t, _, lv = tag_strip(seq_encoded)
+ _, _, v = len_decode(lv)
+ seq_encoded_lenindef = t + LENINDEF + v + EOC
+ seq_decoded_lenindef, tail_lenindef = seq.decode(
+ seq_encoded_lenindef + tail_junk,
+ ctx={"bered": True},
+ )
+ self.assertTrue(seq_decoded_lenindef.lenindef)
+ with self.assertRaises(DecodeError):
+ seq.decode(seq_encoded_lenindef[:-1], ctx={"bered": True})
+ with self.assertRaises(DecodeError):
+ seq.decode(seq_encoded_lenindef[:-2], ctx={"bered": True})
+ repr(seq_decoded_lenindef)
+ pprint(seq_decoded_lenindef)
+ self.assertTrue(seq_decoded_lenindef.ready)
+
+ for decoded, decoded_tail, encoded in (
+ (seq_decoded, tail, seq_encoded),
+ (seq_decoded_lenindef, tail_lenindef, seq_encoded_lenindef),
+ ):
+ self.assertEqual(decoded_tail, tail_junk)
+ self._assert_expects(decoded, expects)
+ self.assertEqual(seq, decoded)
+ self.assertEqual(decoded.encode(), seq_encoded)
+ self.assertEqual(decoded.tlvlen, len(encoded))
+ for expect in expects:
+ if not expect["presented"]:
+ self.assertNotIn(expect["name"], decoded)
+ continue
+ self.assertIn(expect["name"], decoded)
+ obj = decoded[expect["name"]]
+ self.assertTrue(obj.decoded)
+ offset = obj.expl_offset if obj.expled else obj.offset
+ tlvlen = obj.expl_tlvlen if obj.expled else obj.tlvlen
+ self.assertSequenceEqual(
+ seq_encoded[offset:offset + tlvlen],
+ obj.encode(),
+ )
@settings(max_examples=LONG_TEST_MAX_EXAMPLES)
@given(data_strategy())
self.assertSequenceEqual(seq.encode(), empty_seq)
@given(data_strategy())
- def test_encoded_default_accepted(self, d):
+ def test_encoded_default_not_accepted(self, d):
_schema = list(d.draw(dictionaries(
text_letters(),
integers(),
for (n, v), t in zip(_schema, tags)
]
seq_with_default = SeqWithDefault()
- seq_decoded, _ = seq_with_default.decode(seq_encoded)
- for name, value in _schema:
- self.assertEqual(seq_decoded[name], seq_with_default[name])
- self.assertEqual(seq_decoded[name], value)
+ with assertRaisesRegex(self, DecodeError, "DEFAULT value met"):
+ seq_with_default.decode(seq_encoded)
+ for ctx in ({"bered": True}, {"allow_default_values": True}):
+ seq_decoded, _ = seq_with_default.decode(seq_encoded, ctx=ctx)
+ self.assertTrue(seq_decoded.bered)
+ for name, value in _schema:
+ self.assertEqual(seq_decoded[name], seq_with_default[name])
+ self.assertEqual(seq_decoded[name], value)
@given(data_strategy())
def test_missing_from_spec(self, d):
b"".join(sorted([seq[name].encode() for name, _ in Seq.schema])),
)
+ @settings(max_examples=LONG_TEST_MAX_EXAMPLES)
+ @given(data_strategy())
+ def test_unsorted(self, d):
+ tags = [
+ tag_encode(tag) for tag in
+ d.draw(sets(integers(min_value=1), min_size=2, max_size=5))
+ ]
+ tags = d.draw(permutations(tags))
+ assume(tags != sorted(tags))
+ encoded = b"".join(OctetString(t, impl=t).encode() for t in tags)
+ seq_encoded = b"".join((
+ Set.tag_default,
+ len_encode(len(encoded)),
+ encoded,
+ ))
+
+ class Seq(Set):
+ schema = [(str(i), OctetString(impl=t)) for i, t in enumerate(tags)]
+ seq = Seq()
+ with assertRaisesRegex(self, DecodeError, "unordered SET"):
+ seq.decode(seq_encoded)
+ for ctx in ({"bered": True}, {"allow_unordered_set": True}):
+ seq_decoded, _ = Seq().decode(seq_encoded, ctx=ctx)
+ self.assertTrue(seq_decoded.bered)
+ self.assertSequenceEqual(
+ [bytes(seq_decoded[str(i)]) for i, t in enumerate(tags)],
+ [t for t in tags],
+ )
+
@composite
def seqof_values_strategy(draw, schema=None, do_expl=False):
schema = Boolean()
bound_min = d.draw(integers(min_value=1, max_value=1 << 7))
bound_max = d.draw(integers(min_value=bound_min, max_value=1 << 7))
- value = [Boolean()] * d.draw(integers(max_value=bound_min - 1))
+ value = [Boolean(False)] * d.draw(integers(max_value=bound_min - 1))
with self.assertRaises(BoundsError) as err:
SeqOf(value=value, bounds=(bound_min, bound_max))
repr(err.exception)
- value = [Boolean()] * d.draw(integers(
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ SeqOf(bounds=(bound_min, bound_max)).decode(
+ SeqOf(value).encode()
+ )
+ repr(err.exception)
+ value = [Boolean(True)] * d.draw(integers(
min_value=bound_max + 1,
max_value=bound_max + 10,
))
with self.assertRaises(BoundsError) as err:
SeqOf(value=value, bounds=(bound_min, bound_max))
repr(err.exception)
+ with assertRaisesRegex(self, DecodeError, "bounds") as err:
+ SeqOf(bounds=(bound_min, bound_max)).decode(
+ SeqOf(value).encode()
+ )
+ repr(err.exception)
@given(integers(min_value=1, max_value=10))
def test_out_of_bounds(self, bound_max):
@given(
integers(min_value=31),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_tag(self, tag, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
self.base_klass().decode(
tag_encode(tag)[:-1],
@given(
integers(min_value=128),
integers(min_value=0),
- lists(integers()),
+ decode_path_strat,
)
def test_bad_len(self, l, offset, decode_path):
- decode_path = tuple(str(i) for i in decode_path)
with self.assertRaises(DecodeError) as err:
self.base_klass().decode(
self.base_klass.tag_default + len_encode(l)[:-1],
],
)
+ t, _, lv = tag_strip(obj_encoded)
+ _, _, v = len_decode(lv)
+ obj_encoded_lenindef = t + LENINDEF + v + EOC
+ obj_decoded_lenindef, tail_lenindef = obj.decode(
+ obj_encoded_lenindef + tail_junk,
+ ctx={"bered": True},
+ )
+ self.assertTrue(obj_decoded_lenindef.lenindef)
+ repr(obj_decoded_lenindef)
+ pprint(obj_decoded_lenindef)
+ self.assertEqual(obj_decoded_lenindef.tlvlen, len(obj_encoded_lenindef))
+ with self.assertRaises(DecodeError):
+ obj.decode(obj_encoded_lenindef[:-1], ctx={"bered": True})
+ with self.assertRaises(DecodeError):
+ obj.decode(obj_encoded_lenindef[:-2], ctx={"bered": True})
+
class TestSequenceOf(SeqOfMixing, CommonMixin, TestCase):
class SeqOf(SequenceOf):
b"".join(sorted([v.encode() for v in values])),
)
+ @settings(max_examples=LONG_TEST_MAX_EXAMPLES)
+ @given(data_strategy())
+ def test_unsorted(self, d):
+ values = [OctetString(v).encode() for v in d.draw(sets(
+ binary(min_size=1, max_size=5),
+ min_size=2,
+ max_size=5,
+ ))]
+ values = d.draw(permutations(values))
+ assume(values != sorted(values))
+ encoded = b"".join(values)
+ seq_encoded = b"".join((
+ SetOf.tag_default,
+ len_encode(len(encoded)),
+ encoded,
+ ))
+
+ class Seq(SetOf):
+ schema = OctetString()
+ seq = Seq()
+ with assertRaisesRegex(self, DecodeError, "unordered SET OF"):
+ seq.decode(seq_encoded)
+
+ for ctx in ({"bered": True}, {"allow_unordered_set": True}):
+ seq_decoded, _ = Seq().decode(seq_encoded, ctx=ctx)
+ self.assertTrue(seq_decoded.bered)
+ self.assertSequenceEqual(
+ [obj.encode() for obj in seq_decoded],
+ values,
+ )
+
class TestGoMarshalVectors(TestCase):
def runTest(self):
("int%d" % i, Integer(expl=tag_ctxc(i + 1)))
for i in range(count)
]
-
- class Seq(Sequence):
- schema = _schema
- seq = Seq()
- for i in range(count):
- seq["int%d" % i] = Integer(123)
- raw = seq.encode()
- chosen = "int%d" % chosen
- seq.specs[chosen] = seq.specs[chosen](default=123)
- seq.decode(raw)
- with assertRaisesRegex(self, DecodeError, "DEFAULT value met"):
- seq.decode(raw, ctx={"strict_default_existence": True})
+ for klass in (Sequence, Set):
+ class Seq(klass):
+ schema = _schema
+ seq = Seq()
+ for i in range(count):
+ seq["int%d" % i] = Integer(123)
+ raw = seq.encode()
+ chosen_choice = "int%d" % chosen
+ seq.specs[chosen_choice] = seq.specs[chosen_choice](default=123)
+ with assertRaisesRegex(self, DecodeError, "DEFAULT value met"):
+ seq.decode(raw)
+ decoded, _ = seq.decode(raw, ctx={"allow_default_values": True})
+ self.assertTrue(decoded.bered)
+ decoded, _ = seq.decode(raw, ctx={"bered": True})
+ self.assertTrue(decoded.bered)
class TestX690PrefixedType(TestCase):
VisibleString("Jones", impl=tag_ctxp(2)).encode(),
hexdec("82054A6F6E6573"),
)
+
+
+class TestExplOOB(TestCase):
+ def runTest(self):
+ expl = tag_ctxc(123)
+ raw = Integer(123).encode() + Integer(234).encode()
+ raw = b"".join((expl, len_encode(len(raw)), raw))
+ with assertRaisesRegex(self, DecodeError, "explicit tag out-of-bound"):
+ Integer(expl=expl).decode(raw)
+ Integer(expl=expl).decode(raw, ctx={"allow_expl_oob": True})