def send(self, message):
"""
Sends the 'message' to all in clinets in 'recipients'. If 'recipients' is either an empty list or None, then the 'message' is sent to all clients.
'message' MUST be a byte object.
"""
util.send_msg(self.sock, message)
def notifyUser():
req = request.form.to_dict(flat=False)
# print('REQ: ', req)
# print(req['category'])
msg = "You've been donated: $" + \
req['amount'][0] + " for: " + req['category'][0] + \
" pay with pin: " + str(req['pin'][0])
send_msg(req['phone'][0], msg)
return 'okay'
def scheduled_gossip(self):
global gossip_timer
to_send = None
with n_lock:
nbor = sample(n.nodes, 1)[0]
to_send = list(n.clients + n.nodes)
if to_send:
msg = M.GossipMsg(to_send)
u.send_msg(nbor[0], 23456, msg)
gossip_timer = threading.Timer(c.GOSSIP, self.scheduled_gossip)
gossip_timer.start()
def create_and_send_query_msg(s_node, d_node, sn_long, sn_lat, dn_long, dn_lat,
target_r, forbidden_r, q_id):
if target_r is None:
error = 'TargetRegionNotFound'
print(error)
return
query_request = msg.RequestQueryMsg(q_id, sn_lat, sn_long, dn_lat, dn_long,
time_to_live, forbidden_r, target_r,
s_node, d_node)
response = utils.send_msg(s_node,
c.PORT,
query_request,
w_marshalling=False,
reply=True,
timeout=7)
if response is None:
print('Cannot send to nor receive from %s,%d' % (s_node, q_id))
else:
query_response = msg.Msg.fromBytes(response)
print(query_response)
if not query_response.param["succeeded"]:
print('Failure,%s,%s' % (query_response.param["query"],
query_response.param["result"]))
else:
print('Success,%s,%s' % (query_response.param["query"],
query_response.param["result"]))
def handle_client(self):
self.data = b''
flag = True
while flag == True:
self.data = util.recv_msg(self.request)
logging.debug("{}:{} wrote: {}".format(self.client_address[0],
self.client_address[1],
self.data))
try:
if self.data != None:
for c in self.clients:
util.send_msg(c, self.data)
# update log
else:
flag = False
except AttributeError as e:
logging.warning("Exception in Handler: {}".format(e))
def joinPeerHandler(self, msg):
global initialized, gossip_timer, refresh_neighbors_timer, request_neighborlist_timer
if not initialized:
mylat = my_latlon_map["lat"]
mylon = my_latlon_map["lon"]
# now request list of neighbors from all bootstrapping nodes
req = M.NeighborReqMsg(mylat, mylon)
while True:
# do repeatedly until initialization is complete
# not all nodes will have enough neighbors in the first step
# repeated execution ensures that the current node has enough neghbors
for bootnode in c.bootstrap_nodes:
# this node itself might be a bootstrap node.
#In that case, we just move on to the next node
if bootnode == my_hostname:
continue
# else request neighbor list from that node
nlist_msg = u.send_msg(bootnode, 23456, req, False, True)
if nlist_msg and nlist_msg != None:
logging.info(
"Received response from bootstrapping node %s",
bootnode)
# response received is actually a gossip message
x = M.Msg.fromBytes(nlist_msg)
self.gossipHandler(
x, bootnode,
socket.gethostbyname(socket.gethostname()))
# if sufficient neighbors have not been obtained, keep repeating
if len(n.nodes) < 2:
continue
gossip_timer = threading.Timer(c.GOSSIP,
self.scheduled_gossip)
gossip_timer.start()
refresh_neighbors_timer = threading.Timer(
c.REFRESH_INTERVAL,
self.refresh_neighbors_of_neighbors)
refresh_neighbors_timer.start()
request_neighborlist_timer = threading.Timer(
c.NLIST_REQ_INTERVAL, self.refresh_nn_list)
request_neighborlist_timer.start()
initialized = True
break
if initialized:
break
#pause before retrying
time.sleep(10)
def calculate_latency(node):
nonce = randint(0, 65535)
ping = msg.Ping(nonce)
(response, latency) = utils.send_msg(node, c.PORT, ping, False, True,
True, 1)
pr_nonce = msg.Msg.fromBytes(response).param["nonce"]
logging.debug('Checking if nonces are matching (%d == %d)', nonce,
pr_nonce)
return latency if nonce == pr_nonce else None
def get_neighbors_neighbortables(self, nlist):
msg = M.NeighborReqMsg(-2000, 0)
for nbrs in nlist:
#print(nbrs)
response = u.send_msg(nbrs[0], 23456, msg, False, True)
if response:
# DEPENDS ON UTILS
m = M.Msg.fromBytes(response)
nnlist_a = m.param["neighbors"]
#print(nnlist_a)
with n_lock:
n.nn_list[nbrs[0]] = nnlist_a
parser = optparse.OptionParser()
parser.add_option("-a", "--address", action="store", dest="address", default="localhost")
parser.add_option("-p", "--port", action="store", dest="port", type=int, default=1337)
opts = parser.parse_args(sys.argv[1:])[0]
destination = (opts.address, opts.port)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(10)
s.connect(destination)
s.settimeout(None)
while True:
option = raw_input("Menu de connexion \n1. Se connecter \n2. Creer un compte \n")
while option != "1" and option != "2":
option = raw_input("Veuillez saisir une option valide:\n")
util.send_msg(s, option)
if option == "1":
id = raw_input("Veuillez saisir votre identifiant:\n")
passw = getpass.getpass("Veuillez saisir votre mot de passe:\n")
util.send_msg(s, id)
util.send_msg(s, passw)
idAnswer = util.recv_msg(s)
if idAnswer != "0":
passwAnsw = util.recv_msg(s)
while idAnswer != "1" or passwAnsw != "1":
if idAnswer != "1":
id = raw_input("Veuillez saisir un identifiant valide:\n")
passw = getpass.getpass("Veuillez saisir votre mot de passe:\n")
elif passwAnsw == "-1":
print("Desole, un probleme est survenu.")
def notifyVerify(r):
fields = json.loads(r)[0]['fields']
msg = "Please image verify by texting us an image of your purchase and 'verify'"
send_msg(fields['username'], msg)
def main(filename=None, ports=[5000]):
if not filename:
print 'Using default parameters'
params = {
'max_generations': 200,
'max_not_improved': 20,
'size': 100,
'crossover': 0.3,
'mutation': 0.05,
'elitism': 0.2,
'imigration': 0.2,
'tour_size': 8,
'local': None
}
else:
print 'Loading parameters from %s\n' % (filename)
params = util.parse_json(filename)
# Creating initial population
pop = Population(size=params['size'],
crossover=params['crossover'],
mutation=params['mutation'],
elitism=params['elitism'],
imigration=params['imigration'],
tour_size=params['tour_size'],
local=params['local'])
sockets = []
for port in ports:
sock = util.open_socket(int(port))
sockets.append(sock)
Chromo.sockets = sockets
Chromo.cross_op = params['cross_op']
# Generations without improvements
no_improv = 0
for i in range(params['max_generations']):
print 'Generation %d' % (i + 1)
print 'Calculating fitness'
for sock in Chromo.sockets:
util.send_msg(sock, 'NEWGEN\n')
best = pop.evaluate()
for sock in Chromo.sockets:
util.send_msg(sock, 'ENDGEN\n')
print 'main:current_best ', best
#pop.plot_evolution()
if not pop.improved:
no_improvements += 1
print "Didn't improve:", no_improvements
if no_improvements == params['max_not_improved']:
print 'Reached limit for not improved generations'
break
else:
no_improvements = 0
print 'Evolving'
pop.evolve()
print
print '\nBest solution:'
#pop.show_first()
print 'Fitness: ', best[0]
print 'Genes: ', Chromo.to_str(best[1]), '\''
# Closing connection
for sock in Chromo.sockets:
util.send_msg(sock, 'ENDGA\n')
sock.close()
def send(self, msg):
util.send_msg(self.request, bytes(msg, 'utf-8'))
def query_request_handler(self, q):
# client query requests are routed here
global queryq, past_queries, active_queries
# requests cannot be handled if node has not been initialized
while not initialized:
logging.info("Node is not initialized yet")
time.sleep(2)
#myip, myport = self.request.getsockname()
#q = M.Msg.fromBytes(json_data)
query = q.param["query"]
shost = q.param["shost"]
slat = q.param["slat"]
slon = q.param["slon"]
dhost = q.param["dhost"]
dlat = q.param["dlat"]
dlon = q.param["dlon"]
ttl = q.param["ttl"]
forbidden_region = b_loads(bytes.fromhex(q.param["fr"]))
target_region = b_loads(bytes.fromhex(q.param["tr"]))
#print(forbidden_region)
#print(type(target_region))
with qid_lock:
if query in past_queries:
# this query has been performed before, disregard it
logging.info(
'QUERYID %s;SRC %s;DST %s;STRATEGY non-forking; Query Discarded',
query, shost, dhost)
return
if not c.TESTING:
with daemon_lock:
past_queries.add(query)
# at this point the path is just being created, so only add self
new_path = [(my_hostname, my_latlon_map["lon"], my_latlon_map["lat"])]
# We are not using query forking, so strategy is fixed
logging.info(
'QUERYID %s;SRC %s;DST %s;STRATEGY non-forking ;At source.', query,
shost, dhost)
# If current host is within the target region, our search for an alibi relay was
# successful and we can respond accordingly
if Point(my_latlon_map["lon"],
my_latlon_map["lat"]).intersects(target_region):
logging.info('QUERYID %s;SRC %s;DST %s;%s within relayzone', query,
shost, dhost, my_hostname)
response = M.ResponseQueryMsg(query, True, my_hostname, '[]')
# would update query overheads at this point
#u.send_msg(shost, 23456, response)
self.request.sendall(response.asBytes().encode('utf-8'))
return
# Otherwise we should find a viable next hop
target_node = f.nodelist_within_region(query, my_hostname,
my_latlon_map["lon"],
my_latlon_map["lat"], n.nodes,
n.nn_list, forbidden_region,
target_region)
if target_node != None:
# found some neighboring node within the target regions
response = M.ResponseQueryMsg(query, True, target_node, '[]')
#u.send_msg(shost, 23456, response)
self.request.sendall(response.asBytes().encode('utf-8'))
return
# Now we must choose a safe next hop.
viable_nodes = f.get_next_hop(query, my_hostname, slon, slat, dlon,
dlat, forbidden_region, target_region,
my_latlon_map["lon"],
my_latlon_map["lat"], n.nodes, n.nn_list)
# are there any safe nodes available?
if len(viable_nodes) == 0:
# no safe nodes - return with failure
response = M.ResponseQueryMsg(query, False,
my_hostname + ": No safe next hop",
'[]')
# update query overhead here
#u.send_msg(shost, 23456, response)
self.request.sendall(response.asBytes().encode('utf-8'))
return
# Not using query forking, so only pick best node for next hop
next_hop = viable_nodes[0]
if not next_hop:
# no safe nodes - return with failure
response = M.ResponseQueryMsg(query, False,
my_hostname + ": No safe next hop",
new_path)
# update query overhead here
#u.send_msg(shost, 23456, response)
self.request.sendall(response.asBytes().encode('utf-8'))
return
syncQ = queue.Queue()
# save query in queue of query actions for this query ID (similar to producer-consumer)
# mark the query as active until a response is received
#print("Entering Query Queue initialized")
with queryq_lock:
#print("Query Queue initialized")
queryq[query] = syncQ # created a new queue for this query
with active_lock:
active_queries.add(query)
# attempt to forward the query
logging.info(
'QUERYID %s;SRC %s;DST %s;Trying to forward from source %s to %s',
query, shost, dhost, myip, next_hop)
to_send = M.QueryMsg(query, slat, slon, dlat, dlon, ttl,
forbidden_region, target_region, path, shost,
dhost)
u.send_msg(next_hop, 23456, to_send)
# IF THE QUERY COMPLETES SUCCESSFULLY, WE EXPECT THE RESULT TO ARRIVE IN THE QUEUE
while True:
try:
# perform a blocking read with a timeout.
response = q.get(True, c.TIMEOUT)
except:
# the read failed. Inform client that the query timed out
logging.info('QUERYID %d;SRC %s;DST %s;Query timed out', query,
shost, dhost)
msg = M.ResponseQueryMsg(query_id, False,
"Query timed out at source", '[]')
break
if response:
msg = M.ResponseQueryMsg(query, response.params["succeeded"],
response.params["result"], path)
if succeeded:
logging.info(
'SUCCESS:: QUERYID %d;SRC %s;DST %s;Got a query response (Relay - %s)|%s',
query, my_hostname, dhost, response.params["result"],
path)
break
else:
logging.info('FAILURE:: QUERYID %d;SRC %s;DST %s', query,
my_hostname, dhost)
break
# remove the query from the active list and empty out its sync queue
with active_lock:
active_queries.remove(query)
with queryq_lock:
q.queue.clear()
# update query overhead here
# send a response to the client
client = self.request.getpeername()[0]
self.request.sendall(msg.asBytes().encode("utf-8"))
def query_handler(self, q):
global past_queries
myip, myport = self.request.getsockname()
query = q.param["query"]
shost = q.param["shost"]
slat = q.param["slat"]
slon = q.param["slon"]
dhost = q.param["dhost"]
dlat = q.param["dlat"]
dlon = q.param["dlon"]
ttl = q.param["ttl"]
forbidden_region = q.param["fr"]
target_region = q.param["tr"]
path = q.param["path"]
with qid_lock:
if query in past_queries:
# this query has been performed before, disregard it
return
# Add self to the path taken by the packet so far
new_path = path.append(
(my_hostname, my_latlon_map["lon"], my_latlon_map["lat"]))
# We are not using query forking, so strategy is fixed
logging.info(
'QUERYID %s;SRC %s;DST %s;STRATEGY non-forking ;Hop Counts %d;ttl %d;Query Received',
query, shost, dhost, len(path), ttl)
# Check if the query has expired TTL
if len(path) > ttl:
# We are not using query forking, otherwise we would check strategy here
# not storing query overhead at this point either
# send a response to requester and exit
response = M.ResponseQueryMsg(query, False,
my_hostname + ": TTL expired",
new_path)
u.send_msg(shost, 23456, response)
return
logging.info(
'QUERYID %s;SRC %s;DST %s;STRATEGY non-forking ;Processing Query',
query, shost, dhost)
# If current host is within the target region, our search for an alibi relay was
# successful and we can respond accordingly
if Point(my_latlon_map["lon"], my_latlon_map["lat"]).intersects(tr):
logging.info('QUERYID %s;SRC %s;DST %s;%s within relayzone', query,
shost, dhost, my_hostname)
response = M.ResponseQueryMsg(query, True, my_hostname, new_path)
# would update query overheads at this point
u.send_msg(shost, 23456, response)
return
# Otherwise we should find a viable next hop
target_node = f.nodelist_within_region(query, my_hostname,
my_latlon_map["lon"],
my_latlon_map["lat"], n.nodes,
n.nn_list, forbidden_region,
target_region)
if target_node != None:
# found some neighboring node within the target regions
response = M.ResponseQueryMsg(query, True, target_node, new_path)
u.send_msg(shost, 23456, response)
return
# get the next hop to visit
previous_node = self.request.getpeername()[0]
# Now we must choose a safe next hop.
viable_nodes = f.get_next_hop(query, my_hostname, slon, slat, dlon,
dlat, forbidden_region, target_region,
my_latlon_map["lon"],
my_latlon_map["lat"], n.nodes, n.nn_list,
previous_node, path, 1)
# are there any safe nodes available?
if len(viable_nodes) == 0:
# no safe nodes - return with failure
response = M.ResponseQueryMsg(query, False,
my_hostname + ": No safe next hop",
new_path)
# update query overhead here
u.send_msg(shost, 23456, response)
# Not using query forking, so only pick best node for next hop
next_hop = viable_nodes[0]
if not next_hop:
# no safe nodes - return with failure
response = M.ResponseQueryMsg(query, False,
my_hostname + ": No safe next hop",
new_path)
# update query overhead here
u.send_msg(shost, 23456, response)
# attempt to forward the query
logging.info(
'QUERYID %s;SRC %s;DST %s;Trying to forward from %s to %s', query,
shost, dhost, myip, next_hop)
query = M.QueryMsg(query, slat, slon, dlat, dlon, ttl,
forbidden_region, target_region, path, shost, dhost)
# update query overhead here
if not u.send_msg(next_hop, 23456, query):
logging.info(
'QUERYID %s;SRC %s;DST %s;Query forwarding to %s failed',
query, shost, dhost, next_hop)
with n_lock:
n.remove_item_from_nlist(next_hop)
n.update_neighbor_list()
self.handle_query(data)
my_latlon_map["lat"] = file_gps_coords[1]
n.set_gps(file_gps_coords)
# set logging parameters
#logging_map={'hostname':host_name}
logging.Formatter.converter = time.gmtime
#logging.basicConfig(filename="alibi_daemon.log", format='%(asctime)s|%(levelname)s|%(message)s', level=c.LOGGING_LEVEL)
logging.basicConfig(format='%(levelname)s|%(message)s', level=logging.DEBUG)
HOST, PORT = 'localhost', c.PORT
server = ThreadedTCPServer(('', PORT), ThreadedTCPRequestHandler)
# run server
server_thread = threading.Thread(target=server.serve_forever)
# Exit the server thread when the main thread terminates
server_thread.daemon = True
server_thread.start()
join_msg = M.JoinMsg()
u.send_msg(HOST, PORT, join_msg, False)
server_thread.join()
gossip_timer.cancel()
refresh_timer.cancel()
nlist_req_timer.cancel()
server.shutdown()
sys.exit(0)
