def test_addVarSeq(self):
w = Writer()
w.addVarSeq([16, 17, 18], 2, 2)
self.assertEqual(
bytearray(b'\x00\x06' + b'\x00\x10' + b'\x00\x11' + b'\x00\x12'),
w.bytes)
def test_addVarSeq_triple_byte_data(self):
w = Writer()
w.addVarSeq([0xaa, 0xbb, 0xcc], 3, 2)
self.assertEqual(
bytearray(b'\x00\x09' + b'\x00\x00\xaa' + b'\x00\x00\xbb' +
b'\x00\x00\xcc'), w.bytes)
def test_add_five_twice(self):
w = Writer()
w.add(0x0102030405, 5)
w.add(0x1112131415, 5)
self.assertEqual(
bytearray(b'\x01\x02\x03\x04\x05'
b'\x11\x12\x13\x14\x15'), w.bytes)
def extData(self):
"""Serialise the extension."""
if self.renegotiated_connection is None:
return bytearray(0)
writer = Writer()
writer.addVarSeq(self.renegotiated_connection, 1, 1)
return writer.bytes
def test_add_five_twice(self):
w = Writer()
w.add(0x0102030405, 5)
w.add(0x1112131415, 5)
self.assertEqual(bytearray(b'\x01\x02\x03\x04\x05'
b'\x11\x12\x13\x14\x15'),
w.bytes)
def test_add_var_bytes(self):
w = Writer()
w.add_var_bytes(b'test', 3)
self.assertEqual(bytearray(
b'\x00\x00\x04'
b'test'),
w.bytes)
def test_addVarSeq(self):
w = Writer()
w.addVarSeq([16, 17, 18], 2, 2)
self.assertEqual(bytearray(
b'\x00\x06' +
b'\x00\x10' +
b'\x00\x11' +
b'\x00\x12'), w.bytes)
def test_addVarSeq_triple_byte_data(self):
w = Writer()
w.addVarSeq([0xaa, 0xbb, 0xcc], 3, 2)
self.assertEqual(bytearray(
b'\x00\x09' +
b'\x00\x00\xaa' +
b'\x00\x00\xbb' +
b'\x00\x00\xcc'), w.bytes)
def test_addVarTupleSeq(self):
w = Writer()
w.addVarTupleSeq([(1, 2), (2, 9)], 1, 2)
self.assertEqual(bytearray(
b'\x00\x04' + # length
b'\x01\x02' + # first tuple
b'\x02\x09' # second tuple
), w.bytes)
def test_addVarTupleSeq_with_single_element_tuples(self):
w = Writer()
w.addVarTupleSeq([[1], [9], [12]], 2, 3)
self.assertEqual(bytearray(
b'\x00\x00\x06' + # length
b'\x00\x01' + # 1st element
b'\x00\x09' + # 2nd element
b'\x00\x0c'), w.bytes)
def test_addVarTupleSeq(self):
w = Writer()
w.addVarTupleSeq([(1, 2), (2, 9)], 1, 2)
self.assertEqual(
bytearray(b'\x00\x04' + # length
b'\x01\x02' + # first tuple
b'\x02\x09' # second tuple
),
w.bytes)
def test_addVarTupleSeq_with_single_element_tuples(self):
w = Writer()
w.addVarTupleSeq([[1], [9], [12]], 2, 3)
self.assertEqual(
bytearray(b'\x00\x00\x06' + # length
b'\x00\x01' + # 1st element
b'\x00\x09' + # 2nd element
b'\x00\x0c'),
w.bytes)
def post_write(writer, self=msg, size=size, pad_byte=pad_byte, pad=pad):
"""Monkey patch for the postWrite of handshake messages"""
if pad is not None:
size = len(pad)
header_writer = Writer()
header_writer.add(self.handshakeType, 1)
header_writer.add(len(writer.bytes) + size, 3)
if pad is not None:
return header_writer.bytes + writer.bytes + pad
elif size < 0:
return header_writer.bytes + writer.bytes[:size]
else:
return header_writer.bytes + writer.bytes + \
bytearray([pad_byte]*size)
def extData(self):
"""Serialise the extension."""
if self.client_shares is None:
return bytearray(0)
writer = Writer()
for group_id, share in self.client_shares:
writer.add(group_id, 2)
if group_id in GroupName.allFF:
share_length_length = 2
else:
share_length_length = 1
writer.addVarSeq(share, 1, share_length_length)
ext_writer = Writer()
ext_writer.add(len(writer.bytes), 2)
ext_writer.bytes += writer.bytes
return ext_writer.bytes
def _setup_tls13_handshake_keys(self, state):
"""Prepare handshake ciphers for the HRR handling"""
prf_name = state.prf_name
ch_hash = self._ch_hh.digest(prf_name)
new_hh = HandshakeHashes()
writer = Writer()
writer.add(HandshakeType.message_hash, 1)
writer.addVarSeq(ch_hash, 1, 3)
new_hh.update(writer.bytes)
new_hh.update(self._msg.write())
state.handshake_hashes = new_hh
def post_write(writer, self=msg, size=size, pad_byte=pad_byte,
pad=pad):
"""Monkey patch for the postWrite of handshake messages."""
if pad is not None:
size = len(pad)
header_writer = Writer()
header_writer.add(self.handshakeType, 1)
header_writer.add(len(writer.bytes) + size, 3)
if pad is not None:
return header_writer.bytes + writer.bytes + pad
elif size < 0:
return header_writer.bytes + writer.bytes[:size]
else:
return header_writer.bytes + writer.bytes + \
bytearray([pad_byte]*size)
def test_add_with_six_bytes_data(self):
w = Writer()
w.add(0x010203040506, 6)
self.assertEqual(bytearray(b'\x01\x02\x03\x04\x05\x06'), w.bytes)
def test_addVarSeq_with_three_byte_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarSeq([16, 17, 0x1000000], 3, 2)
def test_add_with_four_bytes_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(0x0100000000, 4)
def test_addFixSeq(self):
w = Writer()
w.addFixSeq([16,17,18], 2)
self.assertEqual(bytearray(b'\x00\x10\x00\x11\x00\x12'), w.bytes)
def test___init__(self):
w = Writer()
self.assertEqual(bytearray(0), w.bytes)
def test_add_with_five_overflowing_bytes(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(0x010000000000, 5)
def test_addVarSeq_with_three_byte_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarSeq([16, 17, 0x1000000], 3, 2)
def test_addVarTupleSeq_with_double_byte_invalid_sized_tuples(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarTupleSeq([(1, 2), (2, 3, 4)], 2, 2)
def test_add_with_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(256, 1)
def test_addFixSeq(self):
w = Writer()
w.addFixSeq([16, 17, 18], 2)
self.assertEqual(bytearray(b'\x00\x10\x00\x11\x00\x12'), w.bytes)
def test_add_with_multibyte_data(self):
w = Writer()
w.add(512, 2)
self.assertEqual(bytearray(b'\x02\x00'), w.bytes)
def test_add_with_multibyte_field(self):
w = Writer()
w.add(32, 2)
self.assertEqual(bytearray(b'\x00\x20'), w.bytes)
def test_add(self):
w = Writer()
w.add(255, 1)
self.assertEqual(bytearray(b'\xff'), w.bytes)
def test_add_with_four_byte_data(self):
w = Writer()
w.add(0x01020304, 4)
self.assertEqual(bytearray(b'\x01\x02\x03\x04'), w.bytes)
def test_addVarTupleSeq_with_double_byte_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarTupleSeq([(1, 2), (3, 0x10000)], 2, 2)
def test_addVarTupleSeq_with_empty_array(self):
w = Writer()
w.addVarTupleSeq([], 1, 2)
self.assertEqual(bytearray(
b'\x00\x00'), w.bytes)
def test_add_with_five_bytes_data(self):
w = Writer()
w.add(0x02, 5)
self.assertEqual(bytearray(b'\x00\x00\x00\x00\x02'), w.bytes)
def test_bytes(self):
w = Writer()
w.bytes += bytearray(b'\xbe\xef')
w.add(15, 1)
self.assertEqual(bytearray(b'\xbe\xef\x0f'), w.bytes)
def test_add_var_bytes(self):
w = Writer()
w.add_var_bytes(b'test', 3)
self.assertEqual(bytearray(b'\x00\x00\x04' b'test'), w.bytes)
def test_add_with_four_byte_data(self):
w = Writer()
w.add(0x01020304, 4)
self.assertEqual(bytearray(b'\x01\x02\x03\x04'), w.bytes)
def test_addFixSeq_with_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addFixSeq([16, 17, 256], 1)
def test_add_with_six_bytes_data(self):
w = Writer()
w.add(0x010203040506, 6)
self.assertEqual(bytearray(b'\x01\x02\x03\x04\x05\x06'), w.bytes)
def test_add_with_four_bytes_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(0x0100000000, 4)
def test_add_with_five_underflowing_bytes(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(-1, 5)
def test_addVarTupleSeq_with_empty_array(self):
w = Writer()
w.addVarTupleSeq([], 1, 2)
self.assertEqual(bytearray(b'\x00\x00'), w.bytes)
def test_add_with_five_overflowing_bytes(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(0x010000000000, 5)
def test_add_with_five_underflowing_bytes(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(-1, 5)
def test_addFixSeq_with_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addFixSeq([16, 17, 256], 1)
def test_addVarSeq(self):
w = Writer()
w.addVarSeq([16, 17, 18], 2, 2)
self.assertEqual(bytearray(b"\x00\x06" + b"\x00\x10" + b"\x00\x11" + b"\x00\x12"), w.bytes)
def test_add_with_five_bytes_data(self):
w = Writer()
w.add(0x02, 5)
self.assertEqual(bytearray(b'\x00\x00\x00\x00\x02'), w.bytes)
def test_add(self):
w = Writer()
w.add(255, 1)
self.assertEqual(bytearray(b'\xff'), w.bytes)
def test_bytes(self):
w = Writer()
w.bytes += bytearray(b'\xbe\xef')
w.add(15, 1)
self.assertEqual(bytearray(b'\xbe\xef\x0f'), w.bytes)
def test_add_with_multibyte_field(self):
w = Writer()
w.add(32, 2)
self.assertEqual(bytearray(b'\x00\x20'), w.bytes)
def test_add_with_three_underflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(-1, 3)
def test_add_with_multibyte_data(self):
w = Writer()
w.add(512, 2)
self.assertEqual(bytearray(b'\x02\x00'), w.bytes)
def test_addVarTupleSeq_with_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarTupleSeq([(1, 2), (2, 256)], 1, 2)
def test_add_with_three_byte_data(self):
w = Writer()
w.add(0xbacc01, 3)
self.assertEqual(bytearray(b'\xba\xcc\x01'), w.bytes)
def test_addVarTupleSeq_with_double_byte_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarTupleSeq([(1, 2), (3, 0x10000)], 2, 2)
def test_add_with_underflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.add(-1, 1)
def test_addVarTupleSeq_with_invalid_sized_tuples(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarTupleSeq([(1, 2), (2, 3, 9)], 1, 2)
def test_addVarTupleSeq_with_overflowing_data(self):
w = Writer()
with self.assertRaises(ValueError):
w.addVarTupleSeq([(1, 2), (2, 256)], 1, 2)