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PacketsHandler.py
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PacketsHandler.py
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from Packets import BeaconPacket
from Packets import FunctionPacket
from Packets import Packets
import init_config
import socket
import ifaddr
import time
import UDP_Socket
import threading
import node_variables
from configparser import ConfigParser
import traceback
config = ConfigParser()
config.read('config.ini')
from AudioFile import GetAudio
from Packets import DataPacket
try:
if init_config.GetIp(config['GENERAL']['StationInterface']) == str(config['GENERAL']['IpSink']):
config['GENERAL']['IpRasp'] = socket.gethostbyname(config['GENERAL']['IpRasp'])
config['GENERAL']['IpController'] = socket.gethostbyname(config['GENERAL']['IpController'])
config['GENERAL']['IpSinkOnWan'] = socket.gethostbyname(config['GENERAL']['IpSinkOnWan'])
except Exception as e:
print("Error in PacketsHandler.py: " + e)
def PacketHandler(data, address):
try:
# It tries to resolve the IP of the given name. NB if the the value is an IP it will return the IP itself
ip_rasp = config['GENERAL']['IpRasp']
ip_controller = config['GENERAL']['IpController']
ip_sink_wan = config['GENERAL']['IpSinkOnWan']
packet = Packets.getPacketFromBytes(data)
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print(packet.printLitePacket())
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("--->", init_config.GetIp(config['GENERAL']['StationInterface']))
if (packet.Destination == init_config.GetIp(
config['GENERAL']['StationInterface'])):
#print ("Yess - è per me")
# print("######## ", packet.TTL)
if (int(packet.Type) == 0):
TypeBeacon(packet, ip_controller)
if (int(packet.Type) == 1):
TypeReport(packet, ip_controller)
if (int(packet.Type) == 2):
TypeData(packet, packet.Source, ip_rasp)
if (int(packet.Type) == 3):
TypeFunction(packet, ip_sink_wan)
if (int(packet.Type) == 4):
TypeMicStatus(packet, ip_controller)
#else:
#print("NO - non è per me")
# packet.DecreaseTTL()
#print("@@@@@@@ ", packet.TTL)
# data = packet.getBytesFromPackets()
# UDP_Socket.SendUdpPacketUnicast(
#data, node_variables.IpDefaultGateway, int(config['GENERAL']['Port']))
if (packet.NextHop == str(ip_sink_wan)
and init_config.GetIp(config['GENERAL']['StationInterface'])
== str(config['GENERAL']['IpSink'])):
if (int(packet.Type) == 3):
TypeFunction(packet,ip_sink_wan)
except Exception as e:
print("Error in PacketHandler: ", e)
print(traceback.format_exc())
def TypeBeacon(packet, ip_controller):
if (packet.Destination == str(config['GENERAL']['IpSink'])
and init_config.GetIp(config['GENERAL']['StationInterface'])
== str(config['GENERAL']['IpSink'])):
#Packets.getPacketFromBytes(data).printLitePacket()
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Beacon Received from: ", packet.Source)
data = packet.getBytesFromPackets()
UDP_Socket.SendUdpPacketUnicast(
data, ip_controller,
int(config['GENERAL']['PortController']))
def TypeMicStatus(packet, ip_controller):
if (packet.Destination == str(config['GENERAL']['IpSink'])
and init_config.GetIp(config['GENERAL']['StationInterface'])
== str(config['GENERAL']['IpSink'])):
#Packets.getPacketFromBytes(data).printLitePacket()
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("MicStatus Received from: ", packet.Source)
data = packet.getBytesFromPackets()
UDP_Socket.SendUdpPacketUnicast(
data, ip_controller,
int(config['GENERAL']['PortController']))
def TypeReport(packet, ip_controller):
if (packet.Destination == str(config['GENERAL']['IpSink'])
and init_config.GetIp(config['GENERAL']['StationInterface'])
== str(config['GENERAL']['IpSink'])):
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Report Received from: ", packet.Source)
data = packet.getBytesFromPackets()
UDP_Socket.SendUdpPacketUnicast(
data, ip_controller,
int(config['GENERAL']['PortController']))
def TypeData(packet, source, ip_rasp):
#if (packet.Destination==str(config['GENERAL']['IpSink'])and init_config.GetIp(config['GENERAL']['StationInterface'])==str(config['GENERAL']['IpSink'])): no
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Data Received from: ", source)
pckData = DataPacket(config['GENERAL']['NetId'],
ip_rasp,
source, "100",
ip_rasp, packet.Payload)
data = pckData.getBytesFromPackets()
UDP_Socket.SendUdpPacketUnicast(data, ip_rasp,
int(config['GENERAL']['PortRasp']))
if config.getboolean('DEBUG','WRITE_FILE') is True:
print("Saving inside the file ------->", str(source) )
f = open("/etc/AUDIO/{}.txt".format(source), "ab") #commen
f. write(packet.Payload) #comme
f. close() #comm
def TypeFunction(packet, ip_sink_wan):
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Sono nella TypeFunction")
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Next hop->", packet.NextHop, " vs->",
str(ip_sink_wan))
#config['GENERAL']['StationWanInterface']
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Wan IP->", init_config.GetIp("br-lan1"), " vs->",
str(ip_sink_wan))
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("packet destnation->", packet.Destination, " vs->",
init_config.GetIp(config['GENERAL']['StationInterface']))
if (packet.NextHop == str(ip_sink_wan)
and init_config.GetIp("br-lan1") == str(
ip_sink_wan)):
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Function PKT Received from: ", packet.Source)
dest = packet.Destination
data = packet.getBytesFromPackets()
if config.getboolean('DEBUG','PRINT_LOGS') is True:
print("Invio a, ", dest)
UDP_Socket.SendUdpPacketUnicast(data, dest,
int(config['GENERAL']['Port']))
if (packet.Destination == init_config.GetIp(
config['GENERAL']['StationInterface'])):
GetAudio(packet.Payload)
#ciao
def UpdateNeighborList(ip):
if (FindIpInTheNeighborList(ip) == 0):
node_variables.list_neighbor.append(ip)
def FindIpInTheNeighborList(ip):
return ip in node_variables.list_neighbor
def SendReportToSink(packet):
print(packet.TTL)