def testdecodepartialubyte(self): encoded = b''.join(cborutil.streamencode(250)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (True, 250, 2, cborutil.SPECIAL_NONE))
def testdecodepartialshort(self): encoded = b''.join(cborutil.streamencode(-1024)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (True, -1024, 3, cborutil.SPECIAL_NONE))
def testdecodepartialulonglong(self): encoded = b''.join(cborutil.streamencode(2**32)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -8, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -7, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -6, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -5, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (False, None, -4, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:6]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:7]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:8]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:9]), (True, 2**32, 9, cborutil.SPECIAL_NONE)) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'input data not fully consumed'): cborutil.decodeall(encoded[0:1]) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'input data not fully consumed'): cborutil.decodeall(encoded[0:2])
def testdecodepartiallong(self): encoded = b''.join(cborutil.streamencode(-1048580)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -4, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (True, -1048580, 5, cborutil.SPECIAL_NONE))
def testforbiddentypes(self): for i in range(256): if i == cborutil.SUBTYPE_FALSE: continue elif i == cborutil.SUBTYPE_TRUE: continue elif i == cborutil.SUBTYPE_NULL: continue encoded = cborutil.encodelength(cborutil.MAJOR_TYPE_SPECIAL, i) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'special type \d+ not allowed'): cborutil.decodeitem(encoded)
def testdecodeforbidden(self): for i in range(500): if i == cborutil.SEMANTIC_TAG_FINITE_SET: continue tag = cborutil.encodelength(cborutil.MAJOR_TYPE_SEMANTIC, i) encoded = tag + cborutil.encodelength(cborutil.MAJOR_TYPE_UINT, 42) # Partial decode is incomplete. if i < 24: pass elif i < 256: self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -1, cborutil.SPECIAL_NONE)) elif i < 65536: self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'semantic tag \d+ not allowed'): cborutil.decodeitem(encoded)
def testdecodepartiallonglong(self): encoded = b''.join(cborutil.streamencode(-7000000000)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -8, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -7, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -6, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -5, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (False, None, -4, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:6]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:7]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:8]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:9]), (True, -7000000000, 9, cborutil.SPECIAL_NONE))
def testdecodevariouslengths(self): for i in (0, 1, 22, 23, 24, 25, 254, 255, 256, 65534, 65535, 65536): source = b'x' * i encoded = b''.join(cborutil.streamencode(source)) if len(source) < 24: hlen = 1 elif len(source) < 256: hlen = 2 elif len(source) < 65536: hlen = 3 elif len(source) < 1048576: hlen = 5 self.assertEqual( cborutil.decodeitem(encoded), (True, source, hlen + len(source), cborutil.SPECIAL_NONE))
def testpartialdecode(self): encoded = b''.join(cborutil.streamencode(b'foobar')) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -6, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -5, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -4, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:6]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:7]), (True, b'foobar', 7, cborutil.SPECIAL_NONE))
def testpartialdecode(self): source = {b'key1': b'value1'} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (True, 1, 1, cborutil.SPECIAL_START_MAP)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (True, 1, 1, cborutil.SPECIAL_START_MAP)) source = {b'key%d' % i: None for i in range(23)} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (True, 23, 1, cborutil.SPECIAL_START_MAP)) source = {b'key%d' % i: None for i in range(24)} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (True, 24, 2, cborutil.SPECIAL_START_MAP)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (True, 24, 2, cborutil.SPECIAL_START_MAP)) source = {b'key%d' % i: None for i in range(256)} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (True, 256, 3, cborutil.SPECIAL_START_MAP)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (True, 256, 3, cborutil.SPECIAL_START_MAP)) source = {b'key%d' % i: None for i in range(65536)} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -4, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (True, 65536, 5, cborutil.SPECIAL_START_MAP)) self.assertEqual(cborutil.decodeitem(encoded[0:6]), (True, 65536, 5, cborutil.SPECIAL_START_MAP))
def testpartialdecode(self): # Semantic tag item will be 3 bytes. Set header will be variable # depending on length. encoded = b''.join(cborutil.streamencode({i for i in range(23)})) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (True, 23, 4, cborutil.SPECIAL_START_SET)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (True, 23, 4, cborutil.SPECIAL_START_SET)) encoded = b''.join(cborutil.streamencode({i for i in range(24)})) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (True, 24, 5, cborutil.SPECIAL_START_SET)) self.assertEqual(cborutil.decodeitem(encoded[0:6]), (True, 24, 5, cborutil.SPECIAL_START_SET)) encoded = b''.join(cborutil.streamencode({i for i in range(256)})) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:5]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:6]), (True, 256, 6, cborutil.SPECIAL_START_SET))
def testpartialdecode(self): source = list(range(4)) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (True, 4, 1, cborutil.SPECIAL_START_ARRAY)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (True, 4, 1, cborutil.SPECIAL_START_ARRAY)) source = list(range(23)) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (True, 23, 1, cborutil.SPECIAL_START_ARRAY)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (True, 23, 1, cborutil.SPECIAL_START_ARRAY)) source = list(range(24)) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (True, 24, 2, cborutil.SPECIAL_START_ARRAY)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (True, 24, 2, cborutil.SPECIAL_START_ARRAY)) source = list(range(256)) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeitem(encoded[0:1]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:2]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[0:3]), (True, 256, 3, cborutil.SPECIAL_START_ARRAY)) self.assertEqual(cborutil.decodeitem(encoded[0:4]), (True, 256, 3, cborutil.SPECIAL_START_ARRAY))
def testindefinitepartialdecode(self): encoded = b''.join( cborutil.streamencodebytestringfromiter([b'foobar', b'biz'])) # First item should be begin of bytestring special. self.assertEqual( cborutil.decodeitem(encoded[0:1]), (True, None, 1, cborutil.SPECIAL_START_INDEFINITE_BYTESTRING)) # Second item should be the first chunk. But only available when # we give it 7 bytes (1 byte header + 6 byte chunk). self.assertEqual(cborutil.decodeitem(encoded[1:2]), (False, None, -6, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[1:3]), (False, None, -5, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[1:4]), (False, None, -4, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[1:5]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[1:6]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[1:7]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[1:8]), (True, b'foobar', 7, cborutil.SPECIAL_NONE)) # Third item should be second chunk. But only available when # we give it 4 bytes (1 byte header + 3 byte chunk). self.assertEqual(cborutil.decodeitem(encoded[8:9]), (False, None, -3, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[8:10]), (False, None, -2, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[8:11]), (False, None, -1, cborutil.SPECIAL_NONE)) self.assertEqual(cborutil.decodeitem(encoded[8:12]), (True, b'biz', 4, cborutil.SPECIAL_NONE)) # Fourth item should be end of indefinite stream marker. self.assertEqual(cborutil.decodeitem(encoded[12:13]), (True, None, 1, cborutil.SPECIAL_INDEFINITE_BREAK)) # Now test the behavior when going through the decoder. self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:1]), (False, 1, 0)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:2]), (False, 1, 6)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:3]), (False, 1, 5)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:4]), (False, 1, 4)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:5]), (False, 1, 3)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:6]), (False, 1, 2)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:7]), (False, 1, 1)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:8]), (True, 8, 0)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:9]), (True, 8, 3)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:10]), (True, 8, 2)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:11]), (True, 8, 1)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:12]), (True, 12, 0)) self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:13]), (True, 13, 0)) decoder = cborutil.sansiodecoder() decoder.decode(encoded[0:8]) values = decoder.getavailable() self.assertEqual(values, [b'foobar']) self.assertTrue(values[0].isfirst) self.assertFalse(values[0].islast) self.assertEqual(decoder.decode(encoded[8:12]), (True, 4, 0)) values = decoder.getavailable() self.assertEqual(values, [b'biz']) self.assertFalse(values[0].isfirst) self.assertFalse(values[0].islast) self.assertEqual(decoder.decode(encoded[12:]), (True, 1, 0)) values = decoder.getavailable() self.assertEqual(values, [b'']) self.assertFalse(values[0].isfirst) self.assertTrue(values[0].islast)
def testpartialdecodevariouslengths(self): lens = [ 2, 3, 10, 23, 24, 25, 31, 100, 254, 255, 256, 257, 16384, 65534, 65535, 65536, 65537, 131071, 131072, 131073, 1048575, 1048576, 1048577, ] for size in lens: if size < 24: hlen = 1 elif size < 2**8: hlen = 2 elif size < 2**16: hlen = 3 elif size < 2**32: hlen = 5 else: assert False source = b'x' * size encoded = b''.join(cborutil.streamencode(source)) res = cborutil.decodeitem(encoded[0:1]) if hlen > 1: self.assertEqual( res, (False, None, -(hlen - 1), cborutil.SPECIAL_NONE)) else: self.assertEqual( res, (False, None, -(size + hlen - 1), cborutil.SPECIAL_NONE)) # Decoding partial header reports remaining header size. for i in range(hlen - 1): self.assertEqual( cborutil.decodeitem(encoded[0:i + 1]), (False, None, -(hlen - i - 1), cborutil.SPECIAL_NONE)) # Decoding complete header reports item size. self.assertEqual(cborutil.decodeitem(encoded[0:hlen]), (False, None, -size, cborutil.SPECIAL_NONE)) # Decoding single byte after header reports item size - 1 self.assertEqual(cborutil.decodeitem(encoded[0:hlen + 1]), (False, None, -(size - 1), cborutil.SPECIAL_NONE)) # Decoding all but the last byte reports -1 needed. self.assertEqual(cborutil.decodeitem(encoded[0:hlen + size - 1]), (False, None, -1, cborutil.SPECIAL_NONE)) # Decoding last byte retrieves value. self.assertEqual( cborutil.decodeitem(encoded[0:hlen + size]), (True, source, hlen + size, cborutil.SPECIAL_NONE))