def _random_memory_addr_pkt(addr_len=None, size_len=None, size=None):
# type: (Optional[int], Optional[int], Optional[int]) -> Packet
pkt = UDS() / UDS_RMBA() # type: Packet
pkt.memorySizeLen = size_len or random.randint(1, 4)
pkt.memoryAddressLen = addr_len or random.randint(1, 4)
UDS_RMBARandomEnumerator.set_size(pkt, size or 4)
UDS_RMBARandomEnumerator.set_addr(
pkt, random.randint(
0, (2 ** (8 * pkt.memoryAddressLen) - 1)) & 0xfffffff0)
return pkt
def __pois_to_requests(self, pois):
# type: (List[_PointOfInterest]) -> List[Packet]
tested_addrs = self._get_memory_addresses_from_results(
self.results_with_response)
testing_addrs = set()
new_requests = list()
for addr, upward, mem_size_len, mem_addr_len, mem_size in pois:
for i in range(0, mem_size * 50, mem_size):
if upward:
addr = min(addr + i, 2**(8 * mem_addr_len) - 1)
else:
addr = max(addr - i, 0)
if addr not in tested_addrs and \
(addr, mem_size) not in testing_addrs:
pkt = UDS() / UDS_RMBA(memorySizeLen=mem_size_len,
memoryAddressLen=mem_addr_len)
self.set_size(pkt, mem_size)
self.set_addr(pkt, addr)
new_requests.append(pkt)
testing_addrs.add((addr, mem_size))
return new_requests