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#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com>
# License: https://pyasn1.readthedocs.io/en/latest/license.html
#
import sys
import unittest
from tests.base import BaseTestCase
from pyasn1.type import tag
from pyasn1.type import namedtype
from pyasn1.type import opentype
from pyasn1.type import univ
from pyasn1.codec.cer import decoder
from pyasn1.error import PyAsn1Error
class BooleanDecoderTestCase(BaseTestCase):
def testTrue(self):
assert decoder.decode(bytes((1, 1, 255))) == (1, b'')
def testFalse(self):
assert decoder.decode(bytes((1, 1, 0))) == (0, b'')
def testEmpty(self):
try:
decoder.decode(bytes((1, 0)))
except PyAsn1Error:
pass
def testOverflow(self):
try:
decoder.decode(bytes((1, 2, 0, 0)))
except PyAsn1Error:
pass
class BitStringDecoderTestCase(BaseTestCase):
def testShortMode(self):
assert decoder.decode(
bytes((3, 3, 6, 170, 128))
) == (((1, 0) * 5), b'')
def testLongMode(self):
assert decoder.decode(
bytes((3, 127, 6) + (170,) * 125 + (128,))
) == (((1, 0) * 501), b'')
# TODO: test failures on short chunked and long unchunked substrate samples
class OctetStringDecoderTestCase(BaseTestCase):
def testShortMode(self):
assert decoder.decode(
bytes((4, 15, 81, 117, 105, 99, 107, 32, 98, 114, 111, 119, 110, 32, 102, 111, 120)),
) == (b'Quick brown fox', b'')
def testLongMode(self):
assert decoder.decode(
bytes((36, 128, 4, 130, 3, 232) + (81,) * 1000 + (4, 1, 81, 0, 0))
) == (b'Q' * 1001, b'')
# TODO: test failures on short chunked and long unchunked substrate samples
class SequenceDecoderWithUntaggedOpenTypesTestCase(BaseTestCase):
def setUp(self):
openType = opentype.OpenType(
'id',
{1: univ.Integer(),
2: univ.OctetString()}
)
self.s = univ.Sequence(
componentType=namedtype.NamedTypes(
namedtype.NamedType('id', univ.Integer()),
namedtype.NamedType('blob', univ.Any(), openType=openType)
)
)
def testDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 1, 2, 1, 12, 0, 0)),
asn1Spec=self.s,
decodeOpenTypes=True
)
assert not r
assert s[0] == 1
assert s[1] == 12
def testDecodeOpenTypesChoiceTwo(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 2, 4, 11, 113, 117, 105, 99, 107, 32, 98,
114, 111, 119, 110, 0, 0)), asn1Spec=self.s,
decodeOpenTypes=True
)
assert not r
assert s[0] == 2
assert s[1] == univ.OctetString('quick brown')
def testDecodeOpenTypesUnknownType(self):
try:
s, r = decoder.decode(
bytes((48, 128, 6, 1, 1, 2, 1, 12, 0, 0)), asn1Spec=self.s,
decodeOpenTypes=True
)
except PyAsn1Error:
pass
else:
assert False, 'unknown open type tolerated'
def testDecodeOpenTypesUnknownId(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 3, 6, 1, 12, 0, 0)), asn1Spec=self.s,
decodeOpenTypes=True
)
assert not r
assert s[0] == 3
assert s[1] == univ.OctetString(hexValue='06010c')
def testDontDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 1, 2, 1, 12, 0, 0)), asn1Spec=self.s
)
assert not r
assert s[0] == 1
assert s[1] == bytes((2, 1, 12))
def testDontDecodeOpenTypesChoiceTwo(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 2, 4, 11, 113, 117, 105, 99, 107, 32, 98,
114, 111, 119, 110, 0, 0)), asn1Spec=self.s
)
assert not r
assert s[0] == 2
assert s[1] == bytes((4, 11, 113, 117, 105, 99, 107, 32, 98, 114, 111, 119, 110))
class SequenceDecoderWithImplicitlyTaggedOpenTypesTestCase(BaseTestCase):
def setUp(self):
openType = opentype.OpenType(
'id',
{1: univ.Integer(),
2: univ.OctetString()}
)
self.s = univ.Sequence(
componentType=namedtype.NamedTypes(
namedtype.NamedType('id', univ.Integer()),
namedtype.NamedType(
'blob', univ.Any().subtype(implicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 3)), openType=openType
)
)
)
def testDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 1, 163, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 1
assert s[1] == 12
def testDecodeOpenTypesUnknownId(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 3, 163, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 3
assert s[1] == univ.OctetString(hexValue='02010C')
class SequenceDecoderWithExplicitlyTaggedOpenTypesTestCase(BaseTestCase):
def setUp(self):
openType = opentype.OpenType(
'id',
{1: univ.Integer(),
2: univ.OctetString()}
)
self.s = univ.Sequence(
componentType=namedtype.NamedTypes(
namedtype.NamedType('id', univ.Integer()),
namedtype.NamedType(
'blob', univ.Any().subtype(explicitTag=tag.Tag(tag.tagClassContext, tag.tagFormatSimple, 3)), openType=openType
)
)
)
def testDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 1, 163, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 1
assert s[1] == 12
def testDecodeOpenTypesUnknownId(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 3, 163, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 3
assert s[1] == univ.OctetString(hexValue='02010C')
class SequenceDecoderWithUntaggedSetOfOpenTypesTestCase(BaseTestCase):
def setUp(self):
openType = opentype.OpenType(
'id',
{1: univ.Integer(),
2: univ.OctetString()}
)
self.s = univ.Sequence(
componentType=namedtype.NamedTypes(
namedtype.NamedType('id', univ.Integer()),
namedtype.NamedType('blob', univ.SetOf(componentType=univ.Any()),
openType=openType)
)
)
def testDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 1, 49, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 1
assert s[1][0] == 12
def testDecodeOpenTypesChoiceTwo(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 2, 49, 128, 4, 11, 113, 117, 105, 99,
107, 32, 98, 114, 111, 119, 110, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 2
assert s[1][0] == univ.OctetString('quick brown')
def testDecodeOpenTypesUnknownType(self):
try:
s, r = decoder.decode(
bytes((48, 128, 6, 1, 1, 49, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
except PyAsn1Error:
pass
else:
assert False, 'unknown open type tolerated'
def testDecodeOpenTypesUnknownId(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 3, 49, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 3
assert s[1][0] == univ.OctetString(hexValue='02010c')
def testDontDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 1, 49, 128, 2, 1, 12, 0, 0, 0, 0)),
asn1Spec=self.s
)
assert not r
assert s[0] == 1
assert s[1][0] == bytes((2, 1, 12))
def testDontDecodeOpenTypesChoiceTwo(self):
s, r = decoder.decode(
bytes((48, 128, 2, 1, 2, 49, 128, 4, 11, 113, 117, 105, 99, 107, 32,
98, 114, 111, 119, 110, 0, 0, 0, 0)), asn1Spec=self.s
)
assert not r
assert s[0] == 2
assert s[1][0] == bytes((4, 11, 113, 117, 105, 99, 107, 32, 98, 114,
111, 119, 110))
class SequenceDecoderWithImplicitlyTaggedSetOfOpenTypesTestCase(BaseTestCase):
def setUp(self):
openType = opentype.OpenType(
'id',
{1: univ.Integer(),
2: univ.OctetString()}
)
self.s = univ.Sequence(
componentType=namedtype.NamedTypes(
namedtype.NamedType('id', univ.Integer()),
namedtype.NamedType(
'blob', univ.SetOf(
componentType=univ.Any().subtype(
implicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 3))),
openType=openType
)
)
)
def testDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 10, 2, 1, 1, 49, 5, 131, 3, 2, 1, 12)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 1
assert s[1][0] == 12
def testDecodeOpenTypesUnknownId(self):
s, r = decoder.decode(
bytes((48, 10, 2, 1, 3, 49, 5, 131, 3, 2, 1, 12)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 3
assert s[1][0] == univ.OctetString(hexValue='02010C')
class SequenceDecoderWithExplicitlyTaggedSetOfOpenTypesTestCase(BaseTestCase):
def setUp(self):
openType = opentype.OpenType(
'id',
{1: univ.Integer(),
2: univ.OctetString()}
)
self.s = univ.Sequence(
componentType=namedtype.NamedTypes(
namedtype.NamedType('id', univ.Integer()),
namedtype.NamedType(
'blob', univ.SetOf(
componentType=univ.Any().subtype(
explicitTag=tag.Tag(
tag.tagClassContext, tag.tagFormatSimple, 3))),
openType=openType
)
)
)
def testDecodeOpenTypesChoiceOne(self):
s, r = decoder.decode(
bytes((48, 10, 2, 1, 1, 49, 5, 131, 3, 2, 1, 12)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 1
assert s[1][0] == 12
def testDecodeOpenTypesUnknownId(self):
s, r = decoder.decode(
bytes( (48, 10, 2, 1, 3, 49, 5, 131, 3, 2, 1, 12)),
asn1Spec=self.s, decodeOpenTypes=True
)
assert not r
assert s[0] == 3
assert s[1][0] == univ.OctetString(hexValue='02010C')
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == '__main__':
unittest.TextTestRunner(verbosity=2).run(suite)