else:
write_length = 0
while write_length != len(packet):
try:
write_length = cache.sendto(packet, CACHESOCK)
except:
pass
cache_query = ''
while len(cache_query) != 1:
if len(POLL([0], [], [], 1)[0]) == 1:
try:
cache_query = cache.recv(1)
except:
pass
if cache_query == '\x00':
if filter(udpmsg4.unframe(packet)) != 0:
os.write(
2,
'hub.py: ' + CLIENT + ' successful read from client\n')
for REMOTE in REMOTE_SOCKS:
if not REMOTE in SOCKET_QUEUE:
try:
SENDSOCKETS[REMOTE] = socket.socket(
socket.AF_UNIX, socket.SOCK_DGRAM)
SENDSOCKETS[REMOTE].setblocking(0)
try:
os.remove(HUBDIR + '/send/' + PID + 'TO' +
REMOTE)
except:
pass
SENDSOCKETS[REMOTE].bind(
else:
write_length=0
while write_length!=len(packet):
try:
write_length=cache.sendto(packet,CACHESOCK)
except:
pass
cache_query=''
while len(cache_query)!=1:
if len(POLL([0],[],[],1)[0])==1:
try:
cache_query=cache.recv(1)
except:
pass
if cache_query=='\x00':
if filter(udpmsg4.unframe(packet))!=0:
os.write(2,'hub.py: '+CLIENT+' successful read from client\n')
for REMOTE in REMOTE_SOCKS:
if not REMOTE in SOCKET_QUEUE:
try:
SENDSOCKETS[REMOTE]=socket.socket(socket.AF_UNIX,socket.SOCK_DGRAM)
SENDSOCKETS[REMOTE].setblocking(0)
try:
os.remove(HUBDIR+'/send/'+PID+'TO'+REMOTE)
except:
pass
SENDSOCKETS[REMOTE].bind((HUBDIR+'/send/'+PID+'TO'+REMOTE))
SOCKET_QUEUE[REMOTE]=collections.deque([],MAX_QUEUE)
except socket.error, ex:
if ex.errno == 24:
os.write(2,'hub.py: '+CLIENT+' failed to create sendsocket for '+REMOTE+'\n')
while packet_length != len(packet[2::]):
if 6 in selections([6], [], [], TIMEOUT)[0]:
buffer = os.read(6, packet_length - len(packet[2::]))
if buffer != "":
packet += buffer
else:
break
except:
pass
if packet_length == 0 or len(packet) <= 2:
os.write(2, "ucspi-server2hub: " + CLIENT + " connection to server died\n")
break
elif packet_length != len(packet[2::]):
os.write(2, "ucspi-server2hub: " + CLIENT + " fatal protocol error from server\n")
break
kvps = udpmsg4.unframe(packet)
checksum = sha512(packet).digest()
if kvps == 0:
os.write(2, "ucspi-server2hub: " + CLIENT + " rejected protocol error from server\n")
elif not checksum in SHA512_CACHE and filter(kvps) != 0:
CLIENT_QUEUE += [packet]
SHA512_CACHE += [checksum]
os.write(
2,
"ucspi-server2hub: "
+ CLIENT
+ " CLIENT_QUEUE=["
+ str(len(CLIENT_QUEUE))
+ "] SERVER_QUEUE=["
+ str(len(SERVER_QUEUE))
+ "]\n",
packet += buffer
else:
break
except:
pass
if packet_length == 0 or len(packet) <= 2:
os.write(
2,
'ucspi-server2hub: ' + CLIENT + ' connection to server died\n')
break
elif packet_length != len(packet[2::]):
os.write(
2, 'ucspi-server2hub: ' + CLIENT +
' fatal protocol error from server\n')
break
kvps = udpmsg4.unframe(packet)
checksum = sha512(packet).digest()
if kvps == 0:
os.write(
2, 'ucspi-server2hub: ' + CLIENT +
' rejected protocol error from server\n')
elif not checksum in SHA512_CACHE and filter(kvps) != 0:
CLIENT_QUEUE += [packet]
SHA512_CACHE += [checksum]
os.write(
2, 'ucspi-server2hub: ' + CLIENT + ' CLIENT_QUEUE=[' +
str(len(CLIENT_QUEUE)) + '] SERVER_QUEUE=[' +
str(len(SERVER_QUEUE)) + ']\n')
if 0 in readable:
try:
