def sendOnSSL(self,item,trafic_type,sendtoip):
# sends the packet on the ssl tunnel with wraping the msg in trafic type header
# item: pickle/flat version of data to sent
# trafic_type: UDP or TCP
# sendto: ip to send
# isClient: True if Client is sending a packet else false. it implies if client is sending a packet he can open a new session if needed but server cannot a open session so skip the send msg
# The method checks the avalibility of session, if active sends the packet, else create a new session and send the packet
if not(self.isSession(sendtoip)):#Create a new session for a request
if self.isClient:
status=self.createSession(sendtoip)
if status==False:
return
else:
print 'I am server cannot open session for client'
return
target_Session=self.getSession(sendtoip)
sock=target_Session.wrapSock
pkey = item.pkey
item.pkey = None
if trafic_type=='UDP':
data_pickle = b64encode(pickle.dumps( item.data, pickle.HIGHEST_PROTOCOL))
sslPacket=(trafic_type,crypto.encrypt(pkey, data_pickle))
data = pickle.dumps( sslPacket, pickle.HIGHEST_PROTOCOL )
else:
data_pickle = b64encode(pickle.dumps( item, pickle.HIGHEST_PROTOCOL ))
try:
sslPacket = (trafic_type,crypto.encrypt( pkey, data_pickle ))
except:
print 'SendonSSL: Encryption error'
return
data=pickle.dumps( sslPacket, pickle.HIGHEST_PROTOCOL )
try:
SizeStruct = struct.Struct( "!I" )
sock.sendall(struct.pack("!I",len(data)))
start=0
end=5000# Sending 5000 bytes
size=len(data)
while True:
if end < size:
sock.sendall(data[start:end])
start=end
end=end+5000
else:
sock.sendall(data[start:])
break
except socket.error, msg:
print msg
if self.isSession(id):
self.delSession(id)
return
def do_work( self, item ):
if self.sslClientOnly==True:
if item.type.startswith( "S_P2P" ):
trafic_type='UDP'
sendtoip=item.addr[0]
else:
trafic_type='TCP'
sendtoip=item.to_ip[0]
self.sslComModule.sendOnSSL(item, trafic_type, sendtoip)
elif item.type.startswith( "S_P2P" ):
#@Ali
if self.isSSL==1:
if int(item.addr[2])==self.sslComModule.hostSSLport:
trafic_type='UDP'
sendtoip=item.addr[0]
self.sslComModule.sendOnSSL(item, trafic_type, sendtoip)
return
send_to=( item.addr[0], int(item.addr[2]))
if ipMap.has_key(item.addr) or item.addr[0]==myPubaddr[0]: #@Ali same network, chk ipmap for mapping or requeue the msg and wait for relay response
if ipMap.has_key(item.addr):
send_to=( ipMap[item.addr], int(item.addr[2]))#@Ali send on local/private address
else:#@Ali Requeue the item
self.main_mng.add(item)
return
try:
key = item.pkey
except:
print "unable to obtain public key for p2p traffic"
#print item.data
#print item.addr[0]
data = pickle.dumps( item.data, pickle.HIGHEST_PROTOCOL )
#print key
data = crypto.encrypt(key, data) #p2p message encryption
try:
self.udpSSock.sendto( data, send_to ) #@Ali Transmit the data on random port
except:
self.main_mng.add(item)
print 'udp socket error'
print traceback.print_exc()
#
else:
#@Ali
if self.isSSL==1:
if int(item.to_ip[1])==self.sslComModule.hostSSLport:
trafic_type='TCP'
sendtoip=item.to_ip[0]
self.sslComModule.sendOnSSL(item, trafic_type, sendtoip)
return
send_to=(item.to_ip[0],int(item.to_ip[1]))
if ipMap.has_key(item.to_ip) or item.to_ip[0]==myPubaddr[0]: #@Ali same network, chk ipmap for mapping or requeue the msg and wait for relay response
if ipMap.has_key(item.to_ip):
send_to=( ipMap[item.to_ip], int(item.to_ip[1]))#@Ali send on local/private address
else:#@Ali Requeue the item
self.main_mng.add(item)
return
#
pkey = item.pkey
item.pkey = None
logging.info( "Communication manager is sending {0.type} to {1}".format( item, send_to ) )
try:
sock = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
sock.connect( send_to )
#item.myIP=(myPubaddr[0],myPubaddr[1],myPubaddr[2])
SizeStruct = struct.Struct( "!I" )
data = pickle.dumps( item, pickle.HIGHEST_PROTOCOL )
en_data = crypto.encrypt( pkey, data )
sock.sendall(struct.pack("!I",len(en_data)))
start=0
end=5000# Sending 1 MB
size=len(en_data)
while True:
if end < size:
sock.sendall(en_data[start:end])
start=end
end=end+5000
else:
sock.sendall(en_data[start:])
break
sock.close()
except socket.error as er:
logging.info( "Socket error: {0}".format( er ) )
print 'Socket Error'
print item.type
print send_to
print item.to_ip
# print ipMap
print traceback.print_exc()
# print 'Item added to the Queue for re-attempt'
# item.pkey=pkey
# self.main_mng.add(item)
sock.close()
return
except:
# item.pkey=pkey
# self.main_mng.add(item)
print traceback.print_exc()
# print 'Item added to the Queue for re-attempt'
sock.close()
return
