Peter Surda
f338c00f8e
- with a queue, a situation could occur when new entries are appended but nothing is polling the queue
175 lines
6.0 KiB
Python
175 lines
6.0 KiB
Python
import time
|
|
import Queue
|
|
import socket
|
|
|
|
from debug import logger
|
|
from network.advanceddispatcher import AdvancedDispatcher
|
|
from network.bmproto import BMProtoError, BMProtoInsufficientDataError, BMProto
|
|
from network.bmobject import BMObject, BMObjectInsufficientPOWError, BMObjectInvalidDataError, BMObjectExpiredError, BMObjectInvalidError, BMObjectAlreadyHaveError
|
|
import network.asyncore_pollchoose as asyncore
|
|
from network.objectracker import ObjectTracker
|
|
|
|
from queues import objectProcessorQueue, UISignalQueue, receiveDataQueue
|
|
import state
|
|
import protocol
|
|
|
|
class UDPSocket(BMProto):
|
|
port = 8444
|
|
announceInterval = 60
|
|
|
|
def __init__(self, host=None, sock=None):
|
|
super(BMProto, self).__init__(sock=sock)
|
|
self.verackReceived = True
|
|
self.verackSent = True
|
|
# TODO sort out streams
|
|
self.streams = [1]
|
|
self.fullyEstablished = True
|
|
self.connectedAt = 0
|
|
self.skipUntil = 0
|
|
if sock is None:
|
|
if host is None:
|
|
host = ''
|
|
if ":" in host:
|
|
self.create_socket(socket.AF_INET6, socket.SOCK_DGRAM)
|
|
else:
|
|
self.create_socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
self.set_socket_reuse()
|
|
logger.info("Binding UDP socket to %s:%i", host, UDPSocket.port)
|
|
self.socket.bind((host, UDPSocket.port))
|
|
#BINDTODEVICE is only available on linux and requires root
|
|
#try:
|
|
#print "binding to %s" % (host)
|
|
#self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE, host)
|
|
#except AttributeError:
|
|
else:
|
|
self.socket = sock
|
|
self.set_socket_reuse()
|
|
self.listening = state.Peer(self.socket.getsockname()[0], self.socket.getsockname()[1])
|
|
self.destination = state.Peer(self.socket.getsockname()[0], self.socket.getsockname()[1])
|
|
ObjectTracker.__init__(self)
|
|
self.connecting = False
|
|
self.connected = True
|
|
self.set_state("bm_header", expectBytes=protocol.Header.size)
|
|
|
|
def set_socket_reuse(self):
|
|
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
|
|
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
|
|
try:
|
|
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
|
|
except AttributeError:
|
|
pass
|
|
|
|
def state_bm_command(self):
|
|
BMProto.state_bm_command(self)
|
|
|
|
# disable most commands before doing research / testing
|
|
# only addr (peer discovery), error and object are implemented
|
|
|
|
def bm_command_error(self):
|
|
return BMProto.bm_command_error(self)
|
|
|
|
def bm_command_getdata(self):
|
|
return True
|
|
# return BMProto.bm_command_getdata(self)
|
|
|
|
def bm_command_inv(self):
|
|
return True
|
|
# return BMProto.bm_command_inv(self)
|
|
|
|
def bm_command_object(self):
|
|
return BMProto.bm_command_object(self)
|
|
|
|
def bm_command_addr(self):
|
|
# BMProto.bm_command_object(self)
|
|
addresses = self._decode_addr()
|
|
# only allow peer discovery from private IPs in order to avoid attacks from random IPs on the internet
|
|
if not self.local:
|
|
return True
|
|
remoteport = False
|
|
for i in addresses:
|
|
seenTime, stream, services, ip, port = i
|
|
decodedIP = protocol.checkIPAddress(ip)
|
|
if stream not in state.streamsInWhichIAmParticipating:
|
|
continue
|
|
if seenTime < time.time() - BMProto.maxTimeOffset or seenTime > time.time() + BMProto.maxTimeOffset:
|
|
continue
|
|
if decodedIP is False:
|
|
# if the address isn't local, interpret it as the hosts' own announcement
|
|
remoteport = port
|
|
if remoteport is False:
|
|
return True
|
|
logger.debug("received peer discovery from %s:%i (port %i):", self.destination.host, self.destination.port, remoteport)
|
|
if self.local:
|
|
state.discoveredPeers[state.Peer(self.destination.host, remoteport)] = time.time
|
|
return True
|
|
|
|
def bm_command_portcheck(self):
|
|
return True
|
|
|
|
def bm_command_ping(self):
|
|
return True
|
|
|
|
def bm_command_pong(self):
|
|
return True
|
|
|
|
def bm_command_verack(self):
|
|
return True
|
|
|
|
def bm_command_version(self):
|
|
return True
|
|
|
|
def handle_connect(self):
|
|
return
|
|
|
|
def writable(self):
|
|
return self.write_buf
|
|
|
|
def readable(self):
|
|
return len(self.read_buf) < AdvancedDispatcher._buf_len
|
|
|
|
def handle_read(self):
|
|
try:
|
|
(recdata, addr) = self.socket.recvfrom(AdvancedDispatcher._buf_len)
|
|
except socket.error as e:
|
|
logger.error("socket error: %s", str(e))
|
|
return
|
|
|
|
self.destination = state.Peer(addr[0], addr[1])
|
|
encodedAddr = protocol.encodeHost(addr[0])
|
|
if protocol.checkIPAddress(encodedAddr, True):
|
|
self.local = True
|
|
else:
|
|
self.local = False
|
|
# overwrite the old buffer to avoid mixing data and so that self.local works correctly
|
|
self.read_buf = recdata
|
|
self.bm_proto_reset()
|
|
receiveDataQueue.put(self.destination)
|
|
|
|
def handle_write(self):
|
|
try:
|
|
retval = self.socket.sendto(self.write_buf, ('<broadcast>', UDPSocket.port))
|
|
except socket.error as e:
|
|
logger.error("socket error on sendato: %s", str(e))
|
|
self.slice_write_buf(retval)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
# initial fill
|
|
|
|
for host in (("127.0.0.1", 8448),):
|
|
direct = BMConnection(host)
|
|
while len(asyncore.socket_map) > 0:
|
|
print "loop, state = %s" % (direct.state)
|
|
asyncore.loop(timeout=10, count=1)
|
|
continue
|
|
|
|
proxy = Socks5BMConnection(host)
|
|
while len(asyncore.socket_map) > 0:
|
|
# print "loop, state = %s" % (proxy.state)
|
|
asyncore.loop(timeout=10, count=1)
|
|
|
|
proxy = Socks4aBMConnection(host)
|
|
while len(asyncore.socket_map) > 0:
|
|
# print "loop, state = %s" % (proxy.state)
|
|
asyncore.loop(timeout=10, count=1)
|