# 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 datetime import datetime
from string import ascii_letters
+from string import digits
from string import printable
from string import whitespace
from unittest import TestCase
from hypothesis.strategies import text
from hypothesis.strategies import tuples
from six import assertRaisesRegex
+from six import binary_type
from six import byte2int
from six import indexbytes
from six import int2byte
from six import iterbytes
from six import PY2
from six import text_type
+from six import unichr as six_unichr
from pyderasn import _pp
from pyderasn import abs_decode_path
from pyderasn import DecodeError
from pyderasn import DecodePathDefBy
from pyderasn import Enumerated
+from pyderasn import EOC
+from pyderasn import EOC_LEN
from pyderasn import GeneralizedTime
from pyderasn import GeneralString
from pyderasn import GraphicString
from pyderasn import InvalidValueType
from pyderasn import len_decode
from pyderasn import len_encode
+from pyderasn import LENINDEF
from pyderasn import NotEnoughData
from pyderasn import Null
from pyderasn import NumericString
from pyderasn import VisibleString
-settings.register_profile('local', settings(
+settings.register_profile("local", settings(
deadline=5000,
- perform_health_check=False,
))
-settings.load_profile('local')
+settings.load_profile("local")
LONG_TEST_MAX_EXAMPLES = settings().max_examples * 4
tag_classes = sampled_from((
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):
with self.assertRaises(ValueError):
self.base_klass(impl=b"whatever", expl=b"whenever")
- @given(binary(), integers(), integers(), integers())
+ @given(binary(min_size=1), integers(), integers(), integers())
def test_decoded(self, impl, offset, llen, vlen):
obj = self.base_klass(impl=impl, _decoded=(offset, llen, vlen))
self.assertEqual(obj.offset, offset)
self.assertEqual(obj.tlen, len(impl))
self.assertEqual(obj.tlvlen, obj.tlen + obj.llen + obj.vlen)
- @given(binary())
+ @given(binary(min_size=1))
def test_impl_inherited(self, impl_tag):
class Inherited(self.base_klass):
impl = impl_tag
@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],
)))
@given(integers(min_value=0 + 1, max_value=255 - 1))
- def test_invalid_value(self, value):
+ def test_ber_value(self, value):
with assertRaisesRegex(self, DecodeError, "unacceptable Boolean value"):
Boolean().decode(b"".join((
Boolean.tag_default,
len_encode(1),
int2byte(value),
)))
+ obj, _ = Boolean().decode(
+ b"".join((
+ Boolean.tag_default,
+ len_encode(1),
+ int2byte(value),
+ )),
+ ctx={"bered": True},
+ )
+ self.assertTrue(bool(obj))
+ 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(
+ booleans(),
+ min_size=1,
+ max_size=5,
+ ),
+ )
+ def test_ber_expl(self, expl, values):
+ encoded = b""
+ for value in values:
+ encoded += (
+ expl +
+ LENINDEF +
+ Boolean(value).encode() +
+ EOC
+ )
+ encoded = SequenceOf.tag_default + len_encode(len(encoded)) + encoded
+
+ class SeqOf(SequenceOf):
+ schema = Boolean(expl=expl)
+ seqof, tail = SeqOf().decode(encoded, ctx={"bered": True})
+ self.assertSequenceEqual(tail, b"")
+ self.assertSequenceEqual([bool(v) for v in seqof], values)
+ self.assertSetEqual(
+ set(
+ (
+ v.tlvlen,
+ v.expl_tlvlen,
+ v.expl_tlen,
+ v.expl_llen,
+ v.bered,
+ v.lenindef,
+ v.expl_lenindef,
+ ) for v in seqof
+ ),
+ set(((
+ 3 + EOC_LEN,
+ len(expl) + 1 + 3 + EOC_LEN,
+ len(expl),
+ 1,
+ False,
+ False,
+ True,
+ ),)),
+ )
@composite
@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(
tuples(integers(min_value=0), binary()),
tuples(integers(min_value=0), binary()),
- binary(),
- binary(),
+ binary(min_size=1),
+ binary(min_size=1),
)
def test_comparison(self, value1, value2, tag1, tag2):
for klass in (BitString, BitStringInherited):
@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],
self.assertTrue(obj[9])
self.assertFalse(obj[17])
+ @given(
+ integers(min_value=1, max_value=30),
+ lists(
+ one_of(
+ binary(min_size=1, max_size=5),
+ lists(
+ binary(min_size=1, max_size=5),
+ min_size=1,
+ max_size=3,
+ ),
+ ),
+ min_size=0,
+ max_size=3,
+ ),
+ lists(booleans(), min_size=1),
+ binary(),
+ )
+ def test_constructed(self, impl, chunk_inputs, chunk_last_bits, junk):
+ def chunk_constructed(contents):
+ return (
+ tag_encode(form=TagFormConstructed, num=3) +
+ LENINDEF +
+ b"".join(BitString(content).encode() for content in contents) +
+ EOC
+ )
+ chunks = []
+ payload_expected = b""
+ bit_len_expected = 0
+ for chunk_input in chunk_inputs:
+ if isinstance(chunk_input, binary_type):
+ chunks.append(BitString(chunk_input).encode())
+ payload_expected += chunk_input
+ bit_len_expected += len(chunk_input) * 8
+ else:
+ chunks.append(chunk_constructed(chunk_input))
+ payload = b"".join(chunk_input)
+ payload_expected += payload
+ bit_len_expected += len(payload) * 8
+ chunk_last = BitString("'%s'B" % "".join(
+ "1" if bit else "0" for bit in chunk_last_bits
+ ))
+ payload_expected += bytes(chunk_last)
+ bit_len_expected += chunk_last.bit_len
+ encoded_indefinite = (
+ tag_encode(form=TagFormConstructed, num=impl) +
+ LENINDEF +
+ b"".join(chunks) +
+ chunk_last.encode() +
+ EOC
+ )
+ encoded_definite = (
+ tag_encode(form=TagFormConstructed, num=impl) +
+ len_encode(len(b"".join(chunks) + chunk_last.encode())) +
+ b"".join(chunks) +
+ chunk_last.encode()
+ )
+ with assertRaisesRegex(self, DecodeError, "unallowed BER"):
+ BitString(impl=tag_encode(impl)).decode(encoded_indefinite)
+ for lenindef_expected, encoded in (
+ (True, encoded_indefinite),
+ (False, encoded_definite),
+ ):
+ obj, tail = BitString(impl=tag_encode(impl)).decode(
+ encoded + junk,
+ ctx={"bered": True},
+ )
+ 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"))
+ self.assertSequenceEqual(tail, b"")
+ self.assertEqual(obj, vector)
+ obj, tail = BitString().decode(
+ hexdec("23800303000A3B0305045F291CD00000"),
+ ctx={"bered": True},
+ )
+ self.assertSequenceEqual(tail, b"")
+ self.assertEqual(obj, vector)
+ self.assertTrue(obj.bered)
+ self.assertTrue(obj.lenindef)
+
@composite
def octet_string_values_strategy(draw, do_expl=False):
repr(obj)
pprint(obj)
- @given(binary(), binary(), binary(), binary())
+ @given(binary(), binary(), binary(min_size=1), binary(min_size=1))
def test_comparison(self, value1, value2, tag1, tag2):
for klass in (OctetString, OctetStringInherited):
obj1 = klass(value1)
@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):
)
self.assertEqual(obj_decoded.expl_offset, offset)
+ @given(
+ integers(min_value=1, max_value=30),
+ lists(
+ one_of(
+ binary(min_size=1, max_size=5),
+ lists(
+ binary(min_size=1, max_size=5),
+ min_size=1,
+ max_size=3,
+ ),
+ ),
+ min_size=1,
+ max_size=3,
+ ),
+ binary(),
+ )
+ def test_constructed(self, impl, chunk_inputs, junk):
+ def chunk_constructed(contents):
+ return (
+ tag_encode(form=TagFormConstructed, num=4) +
+ LENINDEF +
+ b"".join(OctetString(content).encode() for content in contents) +
+ EOC
+ )
+ chunks = []
+ payload_expected = b""
+ for chunk_input in chunk_inputs:
+ if isinstance(chunk_input, binary_type):
+ chunks.append(OctetString(chunk_input).encode())
+ payload_expected += chunk_input
+ else:
+ chunks.append(chunk_constructed(chunk_input))
+ payload = b"".join(chunk_input)
+ payload_expected += payload
+ encoded_indefinite = (
+ tag_encode(form=TagFormConstructed, num=impl) +
+ LENINDEF +
+ b"".join(chunks) +
+ EOC
+ )
+ encoded_definite = (
+ tag_encode(form=TagFormConstructed, num=impl) +
+ len_encode(len(b"".join(chunks))) +
+ b"".join(chunks)
+ )
+ with assertRaisesRegex(self, DecodeError, "unallowed BER"):
+ OctetString(impl=tag_encode(impl)).decode(encoded_indefinite)
+ for lenindef_expected, encoded in (
+ (True, encoded_indefinite),
+ (False, encoded_definite),
+ ):
+ obj, tail = OctetString(impl=tag_encode(impl)).decode(
+ encoded + junk,
+ ctx={"bered": True},
+ )
+ 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],
data,
)))
+ def test_x690_vector(self):
+ self.assertEqual(
+ ObjectIdentifier().decode(hexdec("0603883703"))[0],
+ ObjectIdentifier((2, 999, 3)),
+ )
+
@composite
def enumerated_values_strategy(draw, schema=None, do_expl=False):
def test_comparison(self, d):
value1 = d.draw(text(alphabet=self.text_alphabet()))
value2 = d.draw(text(alphabet=self.text_alphabet()))
- tag1 = d.draw(binary())
- tag2 = d.draw(binary())
+ tag1 = d.draw(binary(min_size=1))
+ tag2 = d.draw(binary(min_size=1))
obj1 = self.base_klass(value1)
obj2 = self.base_klass(value2)
self.assertEqual(obj1 == obj2, value1 == value2)
@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):
base_klass = UTF8String
+class UnicodeDecodeErrorMixin(object):
+ @given(text(
+ alphabet="".join(six_unichr(i) for i in list(range(0x0410, 0x044f + 1))),
+ min_size=1,
+ max_size=5,
+ ))
+ def test_unicode_decode_error(self, cyrillic_text):
+ with self.assertRaises(DecodeError):
+ self.base_klass(cyrillic_text)
+
+
class TestNumericString(StringMixin, CommonMixin, TestCase):
base_klass = NumericString
+ def text_alphabet(self):
+ return digits
+
+ @given(text(alphabet=ascii_letters, min_size=1, max_size=5))
+ def test_non_numeric(self, cyrillic_text):
+ with assertRaisesRegex(self, DecodeError, "non-numeric"):
+ self.base_klass(cyrillic_text)
-class TestPrintableString(StringMixin, CommonMixin, TestCase):
+ @given(
+ sets(integers(min_value=0, max_value=10), min_size=2, max_size=2),
+ integers(min_value=0),
+ decode_path_strat,
+ )
+ def test_invalid_bounds_while_decoding(self, ints, offset, decode_path):
+ value, bound_min = list(sorted(ints))
+
+ class String(self.base_klass):
+ bounds = (bound_min, bound_min)
+ with self.assertRaises(DecodeError) as err:
+ String().decode(
+ self.base_klass(b"1" * value).encode(),
+ offset=offset,
+ decode_path=decode_path,
+ )
+ repr(err.exception)
+ self.assertEqual(err.exception.offset, offset)
+ self.assertEqual(err.exception.decode_path, decode_path)
+
+
+class TestPrintableString(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = PrintableString
-class TestTeletexString(StringMixin, CommonMixin, TestCase):
+class TestTeletexString(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = TeletexString
-class TestVideotexString(StringMixin, CommonMixin, TestCase):
+class TestVideotexString(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = VideotexString
-class TestIA5String(StringMixin, CommonMixin, TestCase):
+class TestIA5String(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = IA5String
-class TestGraphicString(StringMixin, CommonMixin, TestCase):
+class TestGraphicString(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = GraphicString
-class TestVisibleString(StringMixin, CommonMixin, TestCase):
+class TestVisibleString(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = VisibleString
+ def test_x690_vector(self):
+ obj, tail = VisibleString().decode(hexdec("1A054A6F6E6573"))
+ self.assertSequenceEqual(tail, b"")
+ self.assertEqual(str(obj), "Jones")
+ self.assertFalse(obj.bered)
+ self.assertFalse(obj.lenindef)
+
+ obj, tail = VisibleString().decode(
+ hexdec("3A0904034A6F6E04026573"),
+ ctx={"bered": True},
+ )
+ self.assertSequenceEqual(tail, b"")
+ self.assertEqual(str(obj), "Jones")
+ self.assertTrue(obj.bered)
+ self.assertFalse(obj.lenindef)
+
+ obj, tail = VisibleString().decode(
+ hexdec("3A8004034A6F6E040265730000"),
+ ctx={"bered": True},
+ )
+ self.assertSequenceEqual(tail, b"")
+ self.assertEqual(str(obj), "Jones")
+ self.assertTrue(obj.bered)
+ self.assertTrue(obj.lenindef)
+
-class TestGeneralString(StringMixin, CommonMixin, TestCase):
+class TestGeneralString(
+ UnicodeDecodeErrorMixin,
+ StringMixin,
+ CommonMixin,
+ TestCase,
+):
base_klass = GeneralString
min_value=self.min_datetime,
max_value=self.max_datetime,
))
- tag1 = d.draw(binary())
- tag2 = d.draw(binary())
+ tag1 = d.draw(binary(min_size=1))
+ tag2 = d.draw(binary(min_size=1))
if self.omit_ms:
value1 = value1.replace(microsecond=0)
value2 = value2.replace(microsecond=0)
@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,
)
with self.assertRaises(TagMismatch):
obj.decode(int_encoded)
+ def test_tag_mismatch_underlying(self):
+ class SeqOfBoolean(SequenceOf):
+ schema = Boolean()
+
+ class SeqOfInteger(SequenceOf):
+ schema = Integer()
+
+ class Wahl(Choice):
+ schema = (
+ ("erste", SeqOfBoolean()),
+ )
+
+ int_encoded = SeqOfInteger((Integer(123),)).encode()
+ bool_encoded = SeqOfBoolean((Boolean(False),)).encode()
+ obj = Wahl()
+ obj.decode(bool_encoded)
+ with self.assertRaises(TagMismatch) as err:
+ obj.decode(int_encoded)
+ self.assertEqual(err.exception.decode_path, ("erste", "0"))
+
@composite
def seq_values_strategy(draw, seq_klass, do_expl=False):
class SeqMixing(object):
def test_invalid_value_type(self):
with self.assertRaises(InvalidValueType) as err:
- self.base_klass((1, 2, 3))
+ self.base_klass(123)
repr(err.exception)
def test_invalid_value_type_set(self):
@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)
+
+ 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())
seq[missing] = Boolean()
repr(err.exception)
+ def test_x690_vector(self):
+ class Seq(Sequence):
+ schema = (
+ ("name", IA5String()),
+ ("ok", Boolean()),
+ )
+ seq = Seq().decode(hexdec("300A1605536d6974680101FF"))[0]
+ self.assertEqual(seq["name"], "Smith")
+ self.assertEqual(seq["ok"], True)
+
class TestSet(SeqMixing, CommonMixin, TestCase):
base_klass = Set
@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):
seq.decode(raw)
with assertRaisesRegex(self, DecodeError, "DEFAULT value met"):
seq.decode(raw, ctx={"strict_default_existence": True})
+
+
+class TestX690PrefixedType(TestCase):
+ def runTest(self):
+ self.assertSequenceEqual(
+ VisibleString("Jones").encode(),
+ hexdec("1A054A6F6E6573"),
+ )
+ self.assertSequenceEqual(
+ VisibleString(
+ "Jones",
+ impl=tag_encode(3, klass=TagClassApplication),
+ ).encode(),
+ hexdec("43054A6F6E6573"),
+ )
+ self.assertSequenceEqual(
+ Any(
+ VisibleString(
+ "Jones",
+ impl=tag_encode(3, klass=TagClassApplication),
+ ),
+ expl=tag_ctxc(2),
+ ).encode(),
+ hexdec("A20743054A6F6E6573"),
+ )
+ self.assertSequenceEqual(
+ OctetString(
+ VisibleString(
+ "Jones",
+ impl=tag_encode(3, klass=TagClassApplication),
+ ).encode(),
+ impl=tag_encode(7, form=TagFormConstructed, klass=TagClassApplication),
+ ).encode(),
+ hexdec("670743054A6F6E6573"),
+ )
+ self.assertSequenceEqual(
+ VisibleString("Jones", impl=tag_ctxp(2)).encode(),
+ hexdec("82054A6F6E6573"),
+ )