def subjectPrincipalCheck(self, addr, certTuple):
subject = certTuple['S']
# subject = cert_tuple['S']
# cp = 1
# length = struct.unpack('>I', subject[cp: cp + 4])[0]
# cp += 4
# subject_nodeID = packet.xxhashUser(subject[cp: cp + length].decode("utf-8"))
# cp += length
# ip_data = subject[cp:]
# subject = ip_data
# print(subject)
try:
if subject[0] == 0:
cp = 1
length = struct.unpack('>I', subject[cp:cp + 4])[0]
cp += 4
# subject_nodeID = packet.xxhashUser(subject[cp: cp + length].decode("utf-8"))
cp += length
ip_data = subject[cp:]
# print('SUBJECT NODEID', packet.xxhashUser(subject_nodeID))
if ip_data[0] == 4:
ip = packet.constructIP(ip_data[1:5])
port = struct.unpack('>H', ip_data[5:7])[0]
# length = struct.unpack('>I', ip_data[7:11])[0]
# node_id = struct.unpack('>H', ip_data[11: length + 11])[0]
# print('IP DETAILS', packet.constructIP(ip), port, node_id)
# if subject_nodeID != node_id:
# print('Wrong node ID')
# return False
if ip != addr[0]:
print('Wrong node IP')
return False
if port != addr[1]:
print('Wrong node PORT')
return False
# TODO IPV6 check
else:
return False
elif subject[0] == 4:
ip_data = subject
ip = packet.constructIP(ip_data[1:5])
port = struct.unpack('>H', ip_data[5:7])[0]
if ip != addr[0]:
print('Wrong node IP')
return False
if port != addr[1]:
print('Wrong node PORT')
return False
else:
print('Wrong Principal format / IPv6')
return False
except:
print('Exception while verifying the subject principal')
return False
return True
def recursiveLookup(STS, nodeTuple):
global recursiveNodes
results = request.KademliaProtocol(STS).findNode(
packet.xxhashUser('netsec41'),
(packet.constructIP(nodeTuple[0]), nodeTuple[1]))
time.sleep(3)
nodeData = message.Messages().returnResponse(results)
if nodeData is not None:
message.Messages().removeRequest(results)
for key, value in RT.PopulateRoutingTable(nodeData).items():
recursiveNodes[key] = value
else:
message.Messages().removeRequest(results)
def subjectPrincipalCheck(self, addr, certTuple):
subject = certTuple['S']
try:
if subject[0] == 0:
cp = 1
length = struct.unpack('>I', subject[cp:cp + 4])[0]
cp += 4
cp += length
ip_data = subject[cp:]
if ip_data[0] == 4:
ip = packet.constructIP(ip_data[1:5])
port = struct.unpack('>H', ip_data[5:7])[0]
if ip != addr[0]:
print('Wrong node IP')
return False
if port != addr[1]:
print('Wrong node PORT')
return False
# TODO IPV6 check
else:
return False
elif subject[0] == 4:
ip_data = subject
ip = packet.constructIP(ip_data[1:5])
port = struct.unpack('>H', ip_data[5:7])[0]
if ip != addr[0]:
print('Wrong node IP')
return False
if port != addr[1]:
print('Wrong node PORT')
return False
else:
print('Wrong Principal format / IPv6')
return False
except:
print('Exception while verifying the subject principal')
return False
return True
def getAliveNodes(self, nodeTuple):
LRU = nodeTuple[0]
index = nodeTuple.index(LRU)
for node in nodeTuple:
if node[4] < LRU[4]:
LRU = node
index = nodeTuple.index(LRU)
if self.pingCheck(packet.constructIP(LRU[0]), LRU[1]):
LRU[4] = time.time()
nodeTuple.pop(index)
nodeTuple.append(LRU)
else:
nodeTuple.pop(index)
return nodeTuple
def storeOnNodes(STS):
global StoreData
while True:
file = open("/home/netsec41/dht_data", "r")
StoreData.expireCache()
for line in file:
data = base64.b64decode(line.strip())
key = packet.hashData(data)
kClosestNodes = RT.Kclosest(key)
for nodeTuple in kClosestNodes:
server = packet.constructIP(nodeTuple[0])
port = nodeTuple[1]
result = request.KademliaProtocol(STS).store(
data, (server, port))
message.Messages().removeRequest(result)
file.close()
STS.cleanConnectionStates()
time.sleep(300)