def __init__(self, *args):
super().__init__(*args)
content = (
'04AD7150'
'FADA2E80'
'8E48E000'
'00000000'
'00000000'
'31880220'
'633C0000'
'E92D2412'
'00000000'
'00000000'
'00013634'
'0000907B'
'00000000'
'00000000'
'00000000'
'00000000'
)
content = bytearray.fromhex(content)
self.card = MFUCard(bytes=content)
class MFUTests(unittest.TestCase):
def __init__(self, *args):
super().__init__(*args)
content = (
'04AD7150'
'FADA2E80'
'8E48E000'
'00000000'
'00000000'
'31880220'
'633C0000'
'E92D2412'
'00000000'
'00000000'
'00013634'
'0000907B'
'00000000'
'00000000'
'00000000'
'00000000'
)
content = bytearray.fromhex(content)
self.card = MFUCard(bytes=content)
def test_iter_bytes(self):
iterator = iter(self.card)
firstbytes = [next(iterator) for i in range(4)]
self.assertEqual(firstbytes, [0x04, 0xad, 0x71, 0x50])
for i in range(len(self.card) - 4):
next(iterator)
with self.assertRaises(StopIteration):
next(iterator)
def test_length(self):
self.assertEqual(len(self.card), 64)
def test_hexdump(self):
output = []
def myprint(data, *args, **kwargs):
output.append(str(data))
output.append('\n')
mock_print = Mock(side_effect=myprint)
# patching sys.stdout doesn't work since the function already has
# a reference to the real sys.stdout at define time
with patch('builtins.print', mock_print):
self.card.hexdump()
expected = (
'04ad7150\n'
'fada2e80\n'
'8e48e000\n'
'00000000\n'
'00000000\n'
'31880220\n'
'633c0000\n'
'e92d2412\n'
'00000000\n'
'00000000\n'
'00013634\n'
'0000907b\n'
'00000000\n'
'00000000\n'
'00000000\n'
'00000000\n'
)
self.assertEqual(''.join(output), expected)
def test_hexdump_with_custom_output(self):
output = []
def write(data):
output.append(data)
filemock = Mock()
filemock.write.side_effect = write
self.card.hexdump(file=filemock)
expected = (
'04ad7150\n'
'fada2e80\n'
'8e48e000\n'
'00000000\n'
'00000000\n'
'31880220\n'
'633c0000\n'
'e92d2412\n'
'00000000\n'
'00000000\n'
'00013634\n'
'0000907b\n'
'00000000\n'
'00000000\n'
'00000000\n'
'00000000\n'
)
self.assertEqual(''.join(output), expected)
def test_dump(self):
output = []
def write(data):
output.append(data)
filemock = Mock(sys.stdout)
filemock.write.side_effect = write
self.card.dump(filemock)
expected = (
b'\x04\xad\x71\x50'
b'\xfa\xda\x2e\x80'
b'\x8e\x48\xe0\x00'
b'\x00\x00\x00\x00'
b'\x00\x00\x00\x00'
b'\x31\x88\x02\x20'
b'\x63\x3c\x00\x00'
b'\xe9\x2d\x24\x12'
b'\x00\x00\x00\x00'
b'\x00\x00\x00\x00'
b'\x00\x01\x36\x34'
b'\x00\x00\x90\x7b'
b'\x00\x00\x00\x00'
b'\x00\x00\x00\x00'
b'\x00\x00\x00\x00'
b'\x00\x00\x00\x00'
)
self.assertEqual(b''.join(output), expected)
def test_page_view_is_singleton(self):
view1 = self.card.pages
view2 = self.card.pages
self.assertIs(view1, view2)
def test_get_byte_by_index(self):
self.assertEqual(self.card[0], 4)
self.assertEqual(self.card[4], 0xfa)
self.assertEqual(self.card[8], 0x8e)
self.assertEqual(self.card[47], 0x7b)
self.assertEqual(self.card[-1], 0)
self.assertEqual(self.card[-len(self.card)], 4)
def test_get_bytes_by_slice(self):
data = self.card[:4]
self.assertEqual(data, b'\x04\xad\x71\x50')
data = self.card[10:12]
self.assertEqual(data, b'\xe0\x00')
data = self.card[60:]
self.assertEqual(data, b'\x00\x00\x00\x00')
def test_get_bytes_by_invalid_index(self):
for i in (str, dict, list, tuple, set, bytes, bytearray,
complex, lambda: None, object()):
with self.assertRaises(TypeError):
self.card[i]
with self.assertRaises(IndexError):
self.card[-len(self.card)-1]
with self.assertRaises(IndexError):
self.card[len(self.card)]
def test_get_page(self):
self.assertEqual(bytes(self.card.pages[0]), b'\x04\xAD\x71\x50')
def test_byte_by_getitem(self):
self.assertEqual(self.card[0], 0x04)
def test_bytes_by_slice(self):
self.assertEqual(self.card[:2], b'\x04\xAD')
def test_basic_attributes(self):
self.assertEqual(self.card.id, 0x04ad71fada2e80)
self.assertEqual(self.card.manufacturer, 0x04)
self.assertEqual(self.card.bcc0, 0x50)
self.assertEqual(self.card.bcc1, 0x8e)
self.assertEqual(self.card.id0, 0x04)
self.assertEqual(self.card.id1, 0xad)
self.assertEqual(self.card.id2, 0x71)
self.assertEqual(self.card.id3, 0xfa)
self.assertEqual(self.card.id4, 0xda)
self.assertEqual(self.card.id5, 0x2e)
self.assertEqual(self.card.id6, 0x80)
def test_first_pages_are_readonly(self):
for p in [0, 1]:
self.assertTrue(self.card.pages[p].readonly)
def test_locked_pages_are_read_only(self):
self.skipTest('not implemented')
#self.assertTrue(card.otp_locked)
#self.assertTrue(card.pages4to9_blocked)
#self.assertFalse(card.pages10to15_blocked)
#self.assertFalse(card.otp_blocked)
def test_init_default_empty(self):
# initialized to all zeroes
card = MFUCard()
self.assertEqual(bytes(card), b'\x00' * 64)
def test_init_one_param_only(self):
with self.assertRaises(RuntimeError):
mfu = MFUCard(bytes=b'abcd'*4, file=1)
with self.assertRaises(RuntimeError):
mfu = MFUCard(bytes=b'abcd'*4, hexfile=1)
with self.assertRaises(RuntimeError):
mfu = MFUCard(file=1, hexfile=1)
with self.assertRaises(RuntimeError):
mfu = MFUCard(bytes=b'abcd'*4, file=1, hexfile=1)
def test_init_bytestring(self):
# initialized with bytes, must be 64 bytes
card = MFUCard(bytes=b'\x01' * 64)
self.assertEqual(bytes(card), b'\x01' * 64)
def test_init_bytes(self):
card = MFUCard(bytes=bytes(64))
self.assertEqual(bytes(card), b'\x00' * 64)
card = MFUCard(bytes=bytearray([i for i in range(64)]))
self.assertEqual(list(card), [i for i in range(64)])
def test_init_from_file(self):
# load from a 64-byte binary file
content = b'\x01\x02\03\x04' * 16
fp_mock = Mock(sys.stdin)
fp_mock.fileno.return_value = 3
with patch('builtins.open', return_value=fp_mock) as mock_open, \
patch('os.read', return_value=content) as mock_sysread:
card = MFUCard(file='card.bin')
self.assertEqual(bytes(card), content)
def test_init_from_file_descriptor(self):
def sysread(desc, n):
return b'\x01' * n
with patch('os.read', wraps=sysread) as mock_sysread:
card = MFUCard(file=3)
mock_sysread.assert_called_with(3, ANY)
self.assertEqual(bytes(card), b'\x01' * 64)
def test_init_from_hexfile(self):
# load from an ASCII hex file, spaces ignored, case-insensitive
content = b'0badc0de' * 16
fp_mock = Mock(sys.stdin)
fp_mock.fileno.return_value = 3
with patch('builtins.open', return_value=fp_mock) as mock_open, \
patch('os.read', return_value=content) as mock_sysread:
card = MFUCard(hexfile='card.txt')
self.assertEqual(bytes(card), b'\x0b\xad\xc0\xde' * 16)
def test_init_from_hexfile_file_descriptor(self):
def sysread(desc, n):
if not hasattr(sysread, 'filepos'):
sysread.filepos = 0
filedata = (
b'00010203'
b'01020304'
b'02030405'
b'03040506'
b'04050607'
b'05060708'
b'06070809'
b'0708090a'
b'08090a0b'
b'090a0b0c'
b'0a0b0c0d'
b'0b0c0d0e'
b'0c0d0e0f'
b'0d0e0f00'
b'0e0f0001'
b'0f000102'
)
chunk = filedata[sysread.filepos:sysread.filepos+n]
sysread.filepos = min(sysread.filepos + n, len(filedata))
return chunk
with patch('os.read', wraps=sysread) as mock_sysread:
card = MFUCard(hexfile=3)
mock_sysread.assert_called_with(3, ANY)
expected = b''.join(bytes([i, (i + 1) % 16,
(i + 2) % 16,
(i + 3) % 16])
for i in range(16))
self.assertEqual(bytes(card), expected)