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#!/usr/bin/python
import TorControl
import threading
import socket
import struct
import random
circuits = {}
streams = {}
def runControl(s):
pendingEvents = [] #XXX This tric. should become standard
TorControl._event_handler = pendingEvents.append
TorControl.set_events(s,
[TorControl.EVENT_TYPE.CIRCSTATUS,
TorControl.EVENT_TYPE.STREAMSTATUS])
TorControl.set_option(s,"__LeaveStreamsUnattached 1")
while 1:
e = pendingEvents[:]
del pendingEvents[:]
for ev in e:
handleEvent(s, ev)
_, tp, body = TorControl.receive_message(s)
if tp == TorControl.MSG_TYPE.EVENT:
handleEvent(s, body)
def parsePath(name):
assert name.endswith(".path")
items = name.split(".")
try:
n = int(items[-2])
except:
return None,None
path = items[-(2+n):-2]
host = items[:-(2+n)]
print path,host
return path,".".join(host)
def handleEvent(s,body):
event, args = TorControl.unpack_event(body)
if event == TorControl.EVENT_TYPE.STREAMSTATUS:
status, ident, target = args
print "Got stream event:",TorControl.STREAM_STATUS.nameOf[status],\
ident,target
if status in (TorControl.STREAM_STATUS.NEW_CONNECT,
TorControl.STREAM_STATUS.NEW_RESOLVE):
target,port=target.split(":")
if not target.endswith(".path"):
TorControl.attach_stream(s, ident, 0)
else:
path,host = parsePath(target)
#XXXX Don't launch so many circuits!
streams[ident] = path,host
circid = TorControl.extend_circuit(s, 0, path)
circuits[circid] = path
elif status == TorControl.STREAM_STATUS.DETACHED:
if not streams.has_key(ident):
TorControl.attach_stream(s, ident, 0)
else:
TorControl.close_stream(s, ident, 1)
elif event == TorControl.EVENT_TYPE.CIRCSTATUS:
status, ident, path = args
print "Got circuit event",TorControl.CIRC_STATUS.nameOf[status],\
ident,path
if not circuits.has_key(ident):
return
if status in (TorControl.CIRC_STATUS.CLOSED,
TorControl.CIRC_STATUS.FAILED):
ok = 0
elif status == TorControl.CIRC_STATUS.BUILT:
ok = 1
else:
return
ids = [ streamID for (streamID, (path,host)) in streams.items()
if path == circuits[ident] ]
for streamID in ids:
if ok:
_,host = streams[streamID]
TorControl.redirect_stream(s, streamID, host)
TorControl.attach_stream(s, streamID, ident)
#XXXX Don't do this twice.
else:
TorControl.close_stream(s, streamID, 1)
if not ok:
del circuits[ident]
def run():
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("127.0.0.1", 9051))
TorControl.authenticate(s)
runControl(s)
if __name__ == '__main__':
run()
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