X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=tests%2Ftest_pyderasn.py;h=dec37f3f3c65823612ff5a68bf23492a954ea0bb;hb=fa121badee14d881f0e341604c050facae3790f0;hp=a44906838ea9af54a14729fc75409a8ae1e92854;hpb=57cf347a430ce0c6ab665985d1e07d4960236c0c;p=pyderasn.git diff --git a/tests/test_pyderasn.py b/tests/test_pyderasn.py index a449068..dec37f3 100644 --- a/tests/test_pyderasn.py +++ b/tests/test_pyderasn.py @@ -1,11 +1,10 @@ # coding: utf-8 -# PyDERASN -- Python ASN.1 DER codec with abstract structures -# Copyright (C) 2017-2018 Sergey Matveev +# PyDERASN -- Python ASN.1 DER/BER codec with abstract structures +# Copyright (C) 2017-2020 Sergey Matveev # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as -# published by the Free Software Foundation, either version 3 of the -# License, or (at your option) any later version. +# published by the Free Software Foundation, version 3 of the License. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -16,6 +15,7 @@ # License along with this program. If not, see # . +from copy import deepcopy from datetime import datetime from string import ascii_letters from string import digits @@ -43,6 +43,7 @@ from hypothesis.strategies import sets 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 @@ -62,6 +63,8 @@ from pyderasn import Choice 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 @@ -74,6 +77,11 @@ from pyderasn import InvalidOID 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 LenIndefForm from pyderasn import NotEnoughData from pyderasn import Null from pyderasn import NumericString @@ -110,7 +118,6 @@ from pyderasn import VisibleString settings.register_profile("local", settings( deadline=5000, - perform_health_check=False, )) settings.load_profile("local") LONG_TEST_MAX_EXAMPLES = settings().max_examples * 4 @@ -122,6 +129,10 @@ 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) +) +ctx_dummy = dictionaries(integers(), integers(), min_size=2, max_size=4).example() class TestHex(TestCase): @@ -362,14 +373,16 @@ class TestBoolean(CommonMixin, TestCase): obj = Boolean() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = Boolean(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(booleans(), booleans(), binary(), binary()) def test_comparison(self, value1, value2, tag1, tag2): @@ -460,10 +473,9 @@ class TestBoolean(CommonMixin, 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], @@ -477,10 +489,9 @@ class TestBoolean(CommonMixin, TestCase): @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], @@ -494,10 +505,9 @@ class TestBoolean(CommonMixin, TestCase): @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], @@ -511,10 +521,9 @@ class TestBoolean(CommonMixin, TestCase): @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], @@ -543,20 +552,26 @@ class TestBoolean(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -603,7 +618,95 @@ class TestBoolean(CommonMixin, TestCase): ctx={"bered": True}, ) self.assertTrue(bool(obj)) + self.assertTrue(obj.ber_encoded) + self.assertFalse(obj.lenindef) self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertFalse(obj.lenindef) + self.assertTrue(obj.bered) + + @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 self.assertRaises(LenIndefForm): + Boolean(expl=expl).decode(encoded + junk) + 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.assertFalse(obj.lenindef) + self.assertFalse(obj.ber_encoded) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.expl_lenindef) + self.assertFalse(obj.lenindef) + self.assertFalse(obj.ber_encoded) + self.assertTrue(obj.bered) + self.assertSequenceEqual(tail, junk) + repr(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) + + @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) + with self.assertRaises(LenIndefForm): + SeqOf().decode(encoded) + 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.ber_encoded, + v.lenindef, + v.expl_lenindef, + v.bered, + ) for v in seqof + ), + set((( + 3 + EOC_LEN, + len(expl) + 1 + 3 + EOC_LEN, + len(expl), + 1, + False, + False, + True, + True, + ),)), + ) + repr(seqof) + list(seqof.pps()) + pprint(seqof, big_blobs=True, with_decode_path=True) @composite @@ -682,14 +785,16 @@ class TestInteger(CommonMixin, TestCase): obj = Integer() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = Integer(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) hash(obj) @given(integers(), integers(), binary(), binary()) @@ -741,9 +846,19 @@ class TestInteger(CommonMixin, TestCase): 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): @@ -862,10 +977,9 @@ class TestInteger(CommonMixin, 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: Integer().decode( tag_encode(tag)[:-1], @@ -879,10 +993,9 @@ class TestInteger(CommonMixin, TestCase): @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], @@ -896,10 +1009,9 @@ class TestInteger(CommonMixin, TestCase): @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): @@ -932,20 +1044,26 @@ class TestInteger(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -1019,7 +1137,7 @@ def bit_string_values_strategy(draw, schema=None, value_required=False, do_expl= def _value(value_required): if not value_required and draw(booleans()): - return + return None generation_choice = 0 if value_required: generation_choice = draw(sampled_from((1, 2, 3))) @@ -1028,9 +1146,9 @@ def bit_string_values_strategy(draw, schema=None, value_required=False, do_expl= sampled_from(("0", "1")), max_size=len(schema), ))) - elif generation_choice == 2 or draw(booleans()): + if generation_choice == 2 or draw(booleans()): return draw(binary(max_size=len(schema) // 8)) - elif generation_choice == 3 or draw(booleans()): + if generation_choice == 3 or draw(booleans()): return tuple(draw(lists(sampled_from([name for name, _ in schema])))) return None value = _value(value_required) @@ -1136,14 +1254,16 @@ class TestBitString(CommonMixin, TestCase): obj = BitString() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = BitString(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given( tuples(integers(min_value=0), binary()), @@ -1256,10 +1376,9 @@ class TestBitString(CommonMixin, 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: BitString().decode( tag_encode(tag)[:-1], @@ -1273,10 +1392,9 @@ class TestBitString(CommonMixin, TestCase): @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], @@ -1312,20 +1430,26 @@ class TestBitString(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -1396,6 +1520,219 @@ class TestBitString(CommonMixin, TestCase): 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.ber_encoded) + self.assertEqual(obj.lenindef, lenindef_expected) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertEqual(obj.lenindef, lenindef_expected) + self.assertTrue(obj.bered) + 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.ber_encoded) + self.assertTrue(obj.lenindef) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.lenindef) + self.assertTrue(obj.bered) + @composite def octet_string_values_strategy(draw, do_expl=False): @@ -1452,14 +1789,16 @@ class TestOctetString(CommonMixin, TestCase): obj = OctetString() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = OctetString(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(binary(), binary(), binary(min_size=1), binary(min_size=1)) def test_comparison(self, value1, value2, tag1, tag2): @@ -1496,10 +1835,20 @@ class TestOctetString(CommonMixin, TestCase): 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): @@ -1603,10 +1952,9 @@ class TestOctetString(CommonMixin, 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: OctetString().decode( tag_encode(tag)[:-1], @@ -1620,10 +1968,9 @@ class TestOctetString(CommonMixin, TestCase): @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], @@ -1637,10 +1984,9 @@ class TestOctetString(CommonMixin, TestCase): @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): @@ -1673,20 +2019,26 @@ class TestOctetString(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -1707,6 +2059,127 @@ class TestOctetString(CommonMixin, TestCase): ) 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.ber_encoded) + self.assertEqual(obj.lenindef, lenindef_expected) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertEqual(obj.lenindef, lenindef_expected) + self.assertTrue(obj.bered) + 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): @@ -1736,7 +2209,8 @@ class TestNull(CommonMixin, TestCase): obj = Null() self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(binary(), binary()) def test_comparison(self, tag1, tag2): @@ -1803,10 +2277,9 @@ class TestNull(CommonMixin, 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: Null().decode( tag_encode(tag)[:-1], @@ -1820,10 +2293,9 @@ class TestNull(CommonMixin, TestCase): @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], @@ -1851,20 +2323,26 @@ class TestNull(CommonMixin, TestCase): _, _, optional, _decoded = values obj = klass(optional=optional, _decoded=_decoded) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -1945,14 +2423,17 @@ class TestObjectIdentifier(CommonMixin, TestCase): obj = ObjectIdentifier() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = ObjectIdentifier(value) self.assertTrue(obj.ready) + self.assertFalse(obj.ber_encoded) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) hash(obj) @given(oid_strategy(), oid_strategy(), binary(), binary()) @@ -2075,10 +2556,9 @@ class TestObjectIdentifier(CommonMixin, 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: ObjectIdentifier().decode( tag_encode(tag)[:-1], @@ -2092,10 +2572,9 @@ class TestObjectIdentifier(CommonMixin, TestCase): @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], @@ -2160,7 +2639,7 @@ class TestObjectIdentifier(CommonMixin, TestCase): self.assertEqual(obj, ObjectIdentifier(".".join(str(arc) for arc in oid))) str(obj) repr(obj) - pprint(obj) + pprint(obj, big_blobs=True, with_decode_path=True) @settings(max_examples=LONG_TEST_MAX_EXAMPLES) @given( @@ -2180,20 +2659,26 @@ class TestObjectIdentifier(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -2256,6 +2741,55 @@ class TestObjectIdentifier(CommonMixin, TestCase): ObjectIdentifier((2, 999, 3)), ) + def test_nonnormalized_first_arc(self): + tampered = ( + ObjectIdentifier.tag_default + + len_encode(2) + + b'\x80' + + ObjectIdentifier((1, 0)).encode()[-1:] + ) + obj, _ = ObjectIdentifier().decode(tampered, ctx={"bered": True}) + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.bered) + with assertRaisesRegex(self, DecodeError, "non normalized arc encoding"): + ObjectIdentifier().decode(tampered) + + @given(data_strategy()) + def test_nonnormalized_arcs(self, d): + arcs = d.draw(lists( + integers(min_value=0, max_value=100), + min_size=1, + max_size=5, + )) + dered = ObjectIdentifier((1, 0) + tuple(arcs)).encode() + _, _, lv = tag_strip(dered) + _, _, v = len_decode(lv) + v_no_first_arc = v[1:] + idx_for_tamper = d.draw(integers( + min_value=0, + max_value=len(v_no_first_arc) - 1, + )) + tampered = list(bytearray(v_no_first_arc)) + for _ in range(d.draw(integers(min_value=1, max_value=3))): + tampered.insert(idx_for_tamper, 0x80) + tampered = bytes(bytearray(tampered)) + tampered = ( + ObjectIdentifier.tag_default + + len_encode(len(tampered)) + + tampered + ) + obj, _ = ObjectIdentifier().decode(tampered, ctx={"bered": True}) + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.bered) + with assertRaisesRegex(self, DecodeError, "non normalized arc encoding"): + ObjectIdentifier().decode(tampered) + @composite def enumerated_values_strategy(draw, schema=None, do_expl=False): @@ -2333,14 +2867,16 @@ class TestEnumerated(CommonMixin, TestCase): obj = self.base_klass() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = self.base_klass("whatever") self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(integers(), integers(), binary(), binary()) def test_comparison(self, value1, value2, tag1, tag2): @@ -2466,20 +3002,26 @@ class TestEnumerated(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -2555,7 +3097,8 @@ class StringMixin(object): obj = self.base_klass() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) text_type(obj) with self.assertRaises(ObjNotReady) as err: obj.encode() @@ -2564,7 +3107,8 @@ class StringMixin(object): obj = self.base_klass(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) text_type(obj) @given(data_strategy()) @@ -2603,10 +3147,20 @@ class StringMixin(object): 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): @@ -2710,10 +3264,9 @@ class StringMixin(object): @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], @@ -2727,10 +3280,9 @@ class StringMixin(object): @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], @@ -2744,10 +3296,9 @@ class StringMixin(object): @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): @@ -2779,20 +3330,26 @@ class StringMixin(object): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertNotEqual(obj_decoded, obj) @@ -2820,12 +3377,15 @@ class TestUTF8String(StringMixin, CommonMixin, TestCase): base_klass = UTF8String +cyrillic_letters = text( + alphabet="".join(six_unichr(i) for i in list(range(0x0410, 0x044f + 1))), + min_size=1, + max_size=5, +) + + class UnicodeDecodeErrorMixin(object): - @given(text( - alphabet="".join(six_unichr(i) for i in list(range(0x0410, 0x044f + 1))), - min_size=1, - max_size=5, - )) + @given(cyrillic_letters) def test_unicode_decode_error(self, cyrillic_text): with self.assertRaises(DecodeError): self.base_klass(cyrillic_text) @@ -2835,20 +3395,19 @@ class TestNumericString(StringMixin, CommonMixin, TestCase): base_klass = NumericString def text_alphabet(self): - return digits + return digits + " " @given(text(alphabet=ascii_letters, min_size=1, max_size=5)) - def test_non_numeric(self, cyrillic_text): + def test_non_numeric(self, non_numeric_text): with assertRaisesRegex(self, DecodeError, "non-numeric"): - self.base_klass(cyrillic_text) + self.base_klass(non_numeric_text) @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): @@ -2872,6 +3431,34 @@ class TestPrintableString( ): base_klass = PrintableString + def text_alphabet(self): + return ascii_letters + digits + " '()+,-./:=?" + + @given(text(alphabet=sorted(set(whitespace) - set(" ")), min_size=1, max_size=5)) + def test_non_printable(self, non_printable_text): + with assertRaisesRegex(self, DecodeError, "non-printable"): + self.base_klass(non_printable_text) + + @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 TestTeletexString( UnicodeDecodeErrorMixin, @@ -2918,24 +3505,40 @@ class TestVisibleString( base_klass = VisibleString def test_x690_vector(self): - self.assertEqual( - str(VisibleString().decode(hexdec("1A054A6F6E6573"))[0]), - "Jones", - ) - self.assertEqual( - str(VisibleString().decode( - hexdec("3A0904034A6F6E04026573"), - ctx={"bered": True}, - )[0]), - "Jones", + obj, tail = VisibleString().decode(hexdec("1A054A6F6E6573")) + self.assertSequenceEqual(tail, b"") + self.assertEqual(str(obj), "Jones") + self.assertFalse(obj.ber_encoded) + self.assertFalse(obj.lenindef) + self.assertFalse(obj.bered) + + obj, tail = VisibleString().decode( + hexdec("3A0904034A6F6E04026573"), + ctx={"bered": True}, ) - self.assertEqual( - str(VisibleString().decode( - hexdec("3A8004034A6F6E040265730000"), - ctx={"bered": True}, - )[0]), - "Jones", + self.assertSequenceEqual(tail, b"") + self.assertEqual(str(obj), "Jones") + self.assertTrue(obj.ber_encoded) + self.assertFalse(obj.lenindef) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertFalse(obj.lenindef) + self.assertTrue(obj.bered) + + obj, tail = VisibleString().decode( + hexdec("3A8004034A6F6E040265730000"), + ctx={"bered": True}, ) + self.assertSequenceEqual(tail, b"") + self.assertEqual(str(obj), "Jones") + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.lenindef) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.ber_encoded) + self.assertTrue(obj.lenindef) + self.assertTrue(obj.bered) class TestGeneralString( @@ -3009,7 +3612,8 @@ class TimeMixin(object): obj = self.base_klass() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) @@ -3017,7 +3621,8 @@ class TimeMixin(object): obj = self.base_klass(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(data_strategy()) def test_comparison(self, d): @@ -3162,20 +3767,27 @@ class TimeMixin(object): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() + self.additional_symmetric_check(value, obj_encoded) obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertEqual(obj_decoded.todatetime(), obj_expled.todatetime()) @@ -3202,6 +3814,28 @@ class TestGeneralizedTime(TimeMixin, CommonMixin, TestCase): min_datetime = datetime(1900, 1, 1) max_datetime = datetime(9999, 12, 31) + def additional_symmetric_check(self, value, obj_encoded): + if value.microsecond > 0: + self.assertFalse(obj_encoded.endswith(b"0Z")) + + def test_x690_vector_valid(self): + for data in (( + b"19920521000000Z", + b"19920622123421Z", + b"19920722132100.3Z", + )): + GeneralizedTime(data) + + def test_x690_vector_invalid(self): + for data in (( + b"19920520240000Z", + b"19920622123421.0Z", + b"19920722132100.30Z", + )): + with self.assertRaises(DecodeError) as err: + GeneralizedTime(data) + repr(err.exception) + def test_go_vectors_invalid(self): for data in (( b"20100102030405", @@ -3236,6 +3870,53 @@ class TestGeneralizedTime(TimeMixin, CommonMixin, TestCase): 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 + ) + + def test_ns_fractions(self): + GeneralizedTime(b"20010101000000.000001Z") + with assertRaisesRegex(self, DecodeError, "only microsecond fractions"): + GeneralizedTime(b"20010101000000.0000001Z") + class TestUTCTime(TimeMixin, CommonMixin, TestCase): base_klass = UTCTime @@ -3243,6 +3924,26 @@ class TestUTCTime(TimeMixin, CommonMixin, TestCase): min_datetime = datetime(2000, 1, 1) max_datetime = datetime(2049, 12, 31) + def additional_symmetric_check(self, value, obj_encoded): + pass + + def test_x690_vector_valid(self): + for data in (( + b"920521000000Z", + b"920622123421Z", + b"920722132100Z", + )): + UTCTime(data) + + def test_x690_vector_invalid(self): + for data in (( + b"920520240000Z", + b"9207221321Z", + )): + with self.assertRaises(DecodeError) as err: + UTCTime(data) + repr(err.exception) + def test_go_vectors_invalid(self): for data in (( b"a10506234540Z", @@ -3300,6 +4001,27 @@ class TestUTCTime(TimeMixin, CommonMixin, TestCase): 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): @@ -3338,14 +4060,16 @@ class TestAny(CommonMixin, TestCase): obj = Any() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: obj.encode() repr(err.exception) obj = Any(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(integers()) def test_basic(self, value): @@ -3361,7 +4085,8 @@ class TestAny(CommonMixin, TestCase): len(integer_encoded), ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertSequenceEqual(obj.encode(), integer_encoded) @given(binary(), binary()) @@ -3438,10 +4163,9 @@ class TestAny(CommonMixin, 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: Any().decode( tag_encode(tag)[:-1], @@ -3455,10 +4179,9 @@ class TestAny(CommonMixin, TestCase): @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], @@ -3482,20 +4205,26 @@ class TestAny(CommonMixin, TestCase): _, _, optional, _decoded = values obj = klass(value=value, optional=optional, _decoded=_decoded) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertEqual(bytes(obj_decoded), bytes(obj_expled)) @@ -3518,17 +4247,114 @@ class TestAny(CommonMixin, TestCase): 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 + ) + with self.assertRaises(LenIndefForm): + Any().decode( + encoded + junk, + offset=offset, + decode_path=decode_path, + ) + 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)) + self.assertTrue(obj.lenindef) + self.assertFalse(obj.ber_encoded) + self.assertTrue(obj.bered) + obj = obj.copy() + self.assertTrue(obj.lenindef) + self.assertFalse(obj.ber_encoded) + self.assertTrue(obj.bered) + repr(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) + 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),)) + + class SeqOf(SequenceOf): + schema = Boolean(expl=expl) + + class Seq(Sequence): + schema = ( + ("type", ObjectIdentifier(defines=((("value",), { + ObjectIdentifier("1.2.3"): SeqOf(impl=OctetString.tag_default), + }),))), + ("value", Any()), + ) + seq = Seq(( + ("type", ObjectIdentifier("1.2.3")), + ("value", Any(encoded)), + )) + seq_encoded = seq.encode() + seq_decoded, _ = Seq().decode(seq_encoded, ctx={"bered": True}) + self.assertIsNotNone(seq_decoded["value"].defined) + repr(seq_decoded) + list(seq_decoded.pps()) + pprint(seq_decoded, big_blobs=True, with_decode_path=True) + self.assertTrue(seq_decoded.bered) + self.assertFalse(seq_decoded["type"].bered) + self.assertTrue(seq_decoded["value"].bered) + + chunk = chunk[:-1] + b"\x01" + chunks = b"".join([chunk] * (chunks + 1)) + encoded = OctetString.tag_default + len_encode(len(chunks)) + chunks + seq = Seq(( + ("type", ObjectIdentifier("1.2.3")), + ("value", Any(encoded)), + )) + seq_encoded = seq.encode() + seq_decoded, _ = Seq().decode(seq_encoded, ctx={"bered": True}) + self.assertIsNotNone(seq_decoded["value"].defined) + repr(seq_decoded) + list(seq_decoded.pps()) + pprint(seq_decoded, big_blobs=True, with_decode_path=True) + self.assertTrue(seq_decoded.bered) + self.assertFalse(seq_decoded["type"].bered) + self.assertTrue(seq_decoded["value"].bered) + @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( @@ -3592,7 +4418,8 @@ class TestChoice(CommonMixin, TestCase): obj = self.base_klass() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertIsNone(obj["whatever"]) with self.assertRaises(ObjNotReady) as err: obj.encode() @@ -3600,11 +4427,13 @@ class TestChoice(CommonMixin, TestCase): obj["whatever"] = Boolean() self.assertFalse(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) obj["whatever"] = Boolean(value) self.assertTrue(obj.ready) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) @given(booleans(), booleans()) def test_comparison(self, value1, value2): @@ -3734,20 +4563,26 @@ class TestChoice(CommonMixin, TestCase): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self.assertEqual(obj_decoded, obj_expled) self.assertEqual(obj_decoded.choice, obj_expled.choice) @@ -3770,8 +4605,8 @@ class TestChoice(CommonMixin, TestCase): 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, ) @@ -3834,15 +4669,13 @@ def seq_values_strategy(draw, seq_klass, do_expl=False): value = None if draw(booleans()): value = seq_klass() - value._value = { - k: v for k, v in draw(dictionaries( - integers(), - one_of( - booleans().map(Boolean), - integers().map(Integer), - ), - )).items() - } + value._value = draw(dictionaries( + integers(), + one_of( + booleans().map(Boolean), + integers().map(Integer), + ), + )) schema = None if draw(booleans()): schema = list(draw(dictionaries( @@ -3861,15 +4694,13 @@ def seq_values_strategy(draw, seq_klass, do_expl=False): default = None if draw(booleans()): default = seq_klass() - default._value = { - k: v for k, v in draw(dictionaries( - integers(), - one_of( - booleans().map(Boolean), - integers().map(Integer), - ), - )).items() - } + default._value = draw(dictionaries( + integers(), + one_of( + booleans().map(Boolean), + integers().map(Integer), + ), + )) optional = draw(one_of(none(), booleans())) _decoded = ( draw(integers(min_value=0)), @@ -4049,12 +4880,14 @@ class SeqMixing(object): seq[name] = Boolean() self.assertFalse(seq.ready) repr(seq) - pprint(seq) + list(seq.pps()) + pprint(seq, big_blobs=True, with_decode_path=True) for name, value in ready.items(): seq[name] = Boolean(value) self.assertFalse(seq.ready) repr(seq) - pprint(seq) + list(seq.pps()) + pprint(seq, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: seq.encode() repr(err.exception) @@ -4062,7 +4895,8 @@ class SeqMixing(object): seq[name] = Boolean(value) self.assertTrue(seq.ready) repr(seq) - pprint(seq) + list(seq.pps()) + pprint(seq, big_blobs=True, with_decode_path=True) @given(data_strategy()) def test_call(self, d): @@ -4184,10 +5018,9 @@ class SeqMixing(object): @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], @@ -4201,10 +5034,9 @@ class SeqMixing(object): @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], @@ -4239,27 +5071,62 @@ class SeqMixing(object): self.assertFalse(seq.decoded) self._assert_expects(seq, expects) repr(seq) - pprint(seq) + list(seq.pps()) + pprint(seq, big_blobs=True, with_decode_path=True) + 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.ber_encoded) + self.assertFalse(seq_decoded.bered) + + t, _, lv = tag_strip(seq_encoded) + _, _, v = len_decode(lv) + seq_encoded_lenindef = t + LENINDEF + v + EOC + ctx_copied = deepcopy(ctx_dummy) + ctx_copied["bered"] = True + seq_decoded_lenindef, tail_lenindef = seq.decode( + seq_encoded_lenindef + tail_junk, + ctx=ctx_copied, + ) + del ctx_copied["bered"] + self.assertDictEqual(ctx_copied, ctx_dummy) + self.assertTrue(seq_decoded_lenindef.lenindef) + self.assertTrue(seq_decoded_lenindef.bered) + seq_decoded_lenindef = seq_decoded_lenindef.copy() + self.assertTrue(seq_decoded_lenindef.lenindef) + self.assertTrue(seq_decoded_lenindef.bered) + 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) + list(seq_decoded_lenindef.pps()) + pprint(seq_decoded_lenindef, big_blobs=True, with_decode_path=True) + 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()) @@ -4312,7 +5179,7 @@ class SeqMixing(object): 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(), @@ -4340,10 +5207,18 @@ class SeqMixing(object): 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.ber_encoded) + self.assertTrue(seq_decoded.bered) + seq_decoded = seq_decoded.copy() + self.assertTrue(seq_decoded.ber_encoded) + 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): @@ -4369,6 +5244,40 @@ class SeqMixing(object): with self.assertRaises(TagMismatch): seq_missing.decode(seq_encoded) + def test_bered(self): + class Seq(self.base_klass): + schema = (("underlying", Boolean()),) + encoded = Boolean.tag_default + len_encode(1) + b"\x01" + encoded = Seq.tag_default + len_encode(len(encoded)) + encoded + decoded, _ = Seq().decode(encoded, ctx={"bered": True}) + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + decoded = decoded.copy() + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + + class Seq(self.base_klass): + schema = (("underlying", OctetString()),) + encoded = ( + tag_encode(form=TagFormConstructed, num=4) + + LENINDEF + + OctetString(b"whatever").encode() + + EOC + ) + encoded = Seq.tag_default + len_encode(len(encoded)) + encoded + with self.assertRaises(DecodeError): + Seq().decode(encoded) + decoded, _ = Seq().decode(encoded, ctx={"bered": True}) + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + decoded = decoded.copy() + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + class TestSequence(SeqMixing, CommonMixin, TestCase): base_klass = Sequence @@ -4439,6 +5348,39 @@ class TestSet(SeqMixing, CommonMixin, TestCase): 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.ber_encoded) + self.assertTrue(seq_decoded.bered) + seq_decoded = seq_decoded.copy() + self.assertTrue(seq_decoded.ber_encoded) + self.assertTrue(seq_decoded.bered) + self.assertSequenceEqual( + [bytes(seq_decoded[str(i)]) for i, t in enumerate(tags)], + tags, + ) + @composite def seqof_values_strategy(draw, schema=None, do_expl=False): @@ -4545,7 +5487,8 @@ class SeqOfMixing(object): seqof.append(value) self.assertFalse(seqof.ready) repr(seqof) - pprint(seqof) + list(seqof.pps()) + pprint(seqof, big_blobs=True, with_decode_path=True) with self.assertRaises(ObjNotReady) as err: seqof.encode() repr(err.exception) @@ -4555,7 +5498,8 @@ class SeqOfMixing(object): seqof[i] = Integer(i) self.assertTrue(seqof.ready) repr(seqof) - pprint(seqof) + list(seqof.pps()) + pprint(seqof, big_blobs=True, with_decode_path=True) def test_spec_mismatch(self): class SeqOf(self.base_klass): @@ -4582,17 +5526,27 @@ class SeqOfMixing(object): 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): @@ -4737,10 +5691,9 @@ class SeqOfMixing(object): @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], @@ -4754,10 +5707,9 @@ class SeqOfMixing(object): @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], @@ -4794,20 +5746,26 @@ class SeqOfMixing(object): _decoded=_decoded, ) repr(obj) - pprint(obj) + list(obj.pps()) + pprint(obj, big_blobs=True, with_decode_path=True) self.assertFalse(obj.expled) obj_encoded = obj.encode() obj_expled = obj(value, expl=tag_expl) self.assertTrue(obj_expled.expled) repr(obj_expled) - pprint(obj_expled) + list(obj_expled.pps()) + pprint(obj_expled, big_blobs=True, with_decode_path=True) obj_expled_encoded = obj_expled.encode() + ctx_copied = deepcopy(ctx_dummy) obj_decoded, tail = obj_expled.decode( obj_expled_encoded + tail_junk, offset=offset, + ctx=ctx_copied, ) + self.assertDictEqual(ctx_copied, ctx_dummy) repr(obj_decoded) - pprint(obj_decoded) + list(obj_decoded.pps()) + pprint(obj_decoded, big_blobs=True, with_decode_path=True) self.assertEqual(tail, tail_junk) self._test_symmetric_compare_objs(obj_decoded, obj_expled) self.assertSequenceEqual(obj_decoded.encode(), obj_expled_encoded) @@ -4834,6 +5792,65 @@ class SeqOfMixing(object): ], ) + 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) + self.assertTrue(obj_decoded_lenindef.bered) + obj_decoded_lenindef = obj_decoded_lenindef.copy() + self.assertTrue(obj_decoded_lenindef.lenindef) + self.assertTrue(obj_decoded_lenindef.bered) + repr(obj_decoded_lenindef) + list(obj_decoded_lenindef.pps()) + pprint(obj_decoded_lenindef, big_blobs=True, with_decode_path=True) + 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}) + + def test_bered(self): + class SeqOf(self.base_klass): + schema = Boolean() + encoded = Boolean(False).encode() + encoded += Boolean.tag_default + len_encode(1) + b"\x01" + encoded = SeqOf.tag_default + len_encode(len(encoded)) + encoded + with self.assertRaises(DecodeError): + SeqOf().decode(encoded) + decoded, _ = SeqOf().decode(encoded, ctx={"bered": True}) + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + decoded = decoded.copy() + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + + class SeqOf(self.base_klass): + schema = OctetString() + encoded = OctetString(b"whatever").encode() + encoded += ( + tag_encode(form=TagFormConstructed, num=4) + + LENINDEF + + OctetString(b"whatever").encode() + + EOC + ) + encoded = SeqOf.tag_default + len_encode(len(encoded)) + encoded + with self.assertRaises(DecodeError): + SeqOf().decode(encoded) + decoded, _ = SeqOf().decode(encoded, ctx={"bered": True}) + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + decoded = decoded.copy() + self.assertFalse(decoded.ber_encoded) + self.assertFalse(decoded.lenindef) + self.assertTrue(decoded.bered) + class TestSequenceOf(SeqOfMixing, CommonMixin, TestCase): class SeqOf(SequenceOf): @@ -4871,6 +5888,41 @@ class TestSetOf(SeqOfMixing, CommonMixin, TestCase): 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.ber_encoded) + self.assertTrue(seq_decoded.bered) + seq_decoded = seq_decoded.copy() + self.assertTrue(seq_decoded.ber_encoded) + self.assertTrue(seq_decoded.bered) + self.assertSequenceEqual( + [obj.encode() for obj in seq_decoded], + values, + ) + class TestGoMarshalVectors(TestCase): def runTest(self): @@ -5013,8 +6065,11 @@ class TestGoMarshalVectors(TestCase): seq = Seq() seq["erste"] = PrintableString("test") self.assertSequenceEqual(seq.encode(), hexdec("3006130474657374")) + # Asterisk is actually not allowable + PrintableString._allowable_chars |= set(b"*") seq["erste"] = PrintableString("test*") self.assertSequenceEqual(seq.encode(), hexdec("30071305746573742a")) + PrintableString._allowable_chars -= set(b"*") class Seq(Sequence): schema = ( @@ -5066,7 +6121,10 @@ class TestPP(TestCase): chosen_id = oids[chosen] pp = _pp(asn1_type_name=ObjectIdentifier.asn1_type_name, value=chosen) self.assertNotIn(chosen_id, pp_console_row(pp)) - self.assertIn(chosen_id, pp_console_row(pp, oids=oids)) + self.assertIn( + chosen_id, + pp_console_row(pp, oid_maps=[{'whatever': 'whenever'}, oids]), + ) class TestAutoAddSlots(TestCase): @@ -5117,6 +6175,9 @@ class TestOIDDefines(TestCase): self.assertIsNotNone(seq[value_name_chosen].defined) self.assertEqual(seq[value_name_chosen].defined[0], oid_chosen) self.assertIsInstance(seq[value_name_chosen].defined[1], Integer) + repr(seq) + list(seq.pps()) + pprint(seq, big_blobs=True, with_decode_path=True) class TestDefinesByPath(TestCase): @@ -5178,9 +6239,17 @@ class TestDefinesByPath(TestCase): seq_sequenced["type"] = type_sequenced seq_sequenced["value"] = OctetString(seq_inner.encode()) seq_sequenced_raw = seq_sequenced.encode() + repr(seq_sequenced) + list(seq_sequenced.pps()) + pprint(seq_sequenced, big_blobs=True, with_decode_path=True) defines_by_path = [] - seq_integered, _ = Seq().decode(seq_integered_raw) + ctx_copied = deepcopy(ctx_dummy) + seq_integered, _ = Seq().decode( + seq_integered_raw, + ctx=ctx_copied, + ) + self.assertDictEqual(ctx_copied, ctx_dummy) self.assertIsNone(seq_integered["value"].defined) defines_by_path.append( (("type",), ((("value",), { @@ -5188,34 +6257,49 @@ class TestDefinesByPath(TestCase): type_sequenced: SeqInner(), }),)) ) + ctx_copied["defines_by_path"] = defines_by_path seq_integered, _ = Seq().decode( seq_integered_raw, - ctx={"defines_by_path": defines_by_path}, + ctx=ctx_copied, ) + del ctx_copied["defines_by_path"] + self.assertDictEqual(ctx_copied, ctx_dummy) self.assertIsNotNone(seq_integered["value"].defined) self.assertEqual(seq_integered["value"].defined[0], type_integered) self.assertEqual(seq_integered["value"].defined[1], Integer(123)) self.assertTrue(seq_integered_raw[ seq_integered["value"].defined[1].offset: ].startswith(Integer(123).encode())) + repr(seq_integered) + list(seq_integered.pps()) + pprint(seq_integered, big_blobs=True, with_decode_path=True) + ctx_copied["defines_by_path"] = defines_by_path seq_sequenced, _ = Seq().decode( seq_sequenced_raw, - ctx={"defines_by_path": defines_by_path}, + ctx=ctx_copied, ) + del ctx_copied["defines_by_path"] + self.assertDictEqual(ctx_copied, ctx_dummy) self.assertIsNotNone(seq_sequenced["value"].defined) self.assertEqual(seq_sequenced["value"].defined[0], type_sequenced) seq_inner = seq_sequenced["value"].defined[1] self.assertIsNone(seq_inner["valueInner"].defined) + repr(seq_sequenced) + list(seq_sequenced.pps()) + pprint(seq_sequenced, big_blobs=True, with_decode_path=True) defines_by_path.append(( ("value", DecodePathDefBy(type_sequenced), "typeInner"), ((("valueInner",), {type_innered: Pairs()}),), )) + ctx_copied["defines_by_path"] = defines_by_path seq_sequenced, _ = Seq().decode( seq_sequenced_raw, - ctx={"defines_by_path": defines_by_path}, + ctx=ctx_copied, ) + del ctx_copied["defines_by_path"] + self.assertDictEqual(ctx_copied, ctx_dummy) self.assertIsNotNone(seq_sequenced["value"].defined) self.assertEqual(seq_sequenced["value"].defined[0], type_sequenced) seq_inner = seq_sequenced["value"].defined[1] @@ -5224,6 +6308,9 @@ class TestDefinesByPath(TestCase): pairs = seq_inner["valueInner"].defined[1] for pair in pairs: self.assertIsNone(pair["value"][0].defined) + repr(seq_sequenced) + list(seq_sequenced.pps()) + pprint(seq_sequenced, big_blobs=True, with_decode_path=True) defines_by_path.append(( ( @@ -5239,10 +6326,13 @@ class TestDefinesByPath(TestCase): type_octet_stringed: OctetString(), }),), )) + ctx_copied["defines_by_path"] = defines_by_path seq_sequenced, _ = Seq().decode( seq_sequenced_raw, - ctx={"defines_by_path": defines_by_path}, + ctx=ctx_copied, ) + del ctx_copied["defines_by_path"] + self.assertDictEqual(ctx_copied, ctx_dummy) self.assertIsNotNone(seq_sequenced["value"].defined) self.assertEqual(seq_sequenced["value"].defined[0], type_sequenced) seq_inner = seq_sequenced["value"].defined[1] @@ -5252,6 +6342,9 @@ class TestDefinesByPath(TestCase): for pair_input, pair_got in zip(pairs_input, pairs_got): self.assertEqual(pair_got["value"][0].defined[0], pair_input[0]) self.assertEqual(pair_got["value"][0].defined[1], pair_input[1]) + repr(seq_sequenced) + list(seq_sequenced.pps()) + pprint(seq_sequenced, big_blobs=True, with_decode_path=True) @given(oid_strategy(), integers()) def test_simple(self, oid, tgt): @@ -5319,18 +6412,29 @@ class TestStrictDefaultExistence(TestCase): ("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.ber_encoded) + self.assertTrue(decoded.bered) + decoded = decoded.copy() + self.assertTrue(decoded.ber_encoded) + self.assertTrue(decoded.bered) + decoded, _ = seq.decode(raw, ctx={"bered": True}) + self.assertTrue(decoded.ber_encoded) + self.assertTrue(decoded.bered) + decoded = decoded.copy() + self.assertTrue(decoded.ber_encoded) + self.assertTrue(decoded.bered) class TestX690PrefixedType(TestCase): @@ -5370,3 +6474,13 @@ 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})