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#!/usr/bin/python
# Copyright 2009-2010 Mike Perry. See LICENSE file.
import PathSupport
import threading
import copy
import time
import shutil
import TorCtl
from TorUtil import plog
SQLSupport = None
# Note: be careful writing functions for this class. Remember that
# the PathBuilder has its own thread that it recieves events on
# independent from your thread that calls into here.
class ScanHandler(PathSupport.PathBuilder):
def set_pct_rstr(self, percent_skip, percent_fast):
def notlambda(sm):
sm.percent_fast=percent_fast
sm.percent_skip=percent_skip
self.schedule_selmgr(notlambda)
def reset_stats(self):
def notlambda(this):
this.reset()
self.schedule_low_prio(notlambda)
def commit(self):
plog("INFO", "Scanner committing jobs...")
cond = threading.Condition()
def notlambda2(this):
cond.acquire()
this.run_all_jobs = False
plog("INFO", "Commit done.")
cond.notify()
cond.release()
def notlambda1(this):
plog("INFO", "Committing jobs...")
this.run_all_jobs = True
self.schedule_low_prio(notlambda2)
cond.acquire()
self.schedule_immediate(notlambda1)
cond.wait()
cond.release()
plog("INFO", "Scanner commit done.")
def close_circuits(self):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
this.close_all_circuits()
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
def close_streams(self, reason):
cond = threading.Condition()
plog("NOTICE", "Wedged Tor stream. Closing all streams")
def notlambda(this):
cond.acquire()
this.close_all_streams(reason)
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
def new_exit(self):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
this.new_nym = True
if this.selmgr.bad_restrictions:
plog("NOTICE", "Clearing bad restrictions with reconfigure..")
this.selmgr.reconfigure(this.current_consensus())
lines = this.c.sendAndRecv("SIGNAL CLEARDNSCACHE\r\n")
for _,msg,more in lines:
plog("DEBUG", msg)
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
def idhex_to_r(self, idhex):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
if idhex in self.routers:
cond._result = self.routers[idhex]
else:
cond._result = None
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
return cond._result
def name_to_idhex(self, nick):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
if nick in self.name_to_key:
cond._result = self.name_to_key[nick]
else:
cond._result = None
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
return cond._result
def rank_to_percent(self, rank):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
cond._pct = (100.0*rank)/len(this.sorted_r) # lol moar haxx
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
return cond._pct
def percent_to_rank(self, pct):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
cond._rank = int(round((pct*len(this.sorted_r))/100.0,0)) # lol moar haxx
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
return cond._rank
def get_exit_node(self):
ret = copy.copy(self.last_exit) # GIL FTW
if ret:
plog("DEBUG", "Got last exit of "+ret.idhex)
else:
plog("DEBUG", "No last exit.")
return ret
def set_exit_node(self, arg):
cond = threading.Condition()
exit_name = arg
plog("DEBUG", "Got Setexit: "+exit_name)
def notlambda(sm):
plog("DEBUG", "Job for setexit: "+exit_name)
cond.acquire()
sm.set_exit(exit_name)
cond.notify()
cond.release()
cond.acquire()
self.schedule_selmgr(notlambda)
cond.wait()
cond.release()
class SQLScanHandler(ScanHandler):
def __init__(self, c, selmgr, RouterClass=TorCtl.Router,
strm_selector=PathSupport.StreamSelector):
# Only require sqlalchemy if we really need it.
global SQLSupport
if SQLSupport is None:
import SQLSupport
ScanHandler.__init__(self, c, selmgr, RouterClass, strm_selector)
def attach_sql_listener(self, db_uri):
plog("DEBUG", "Got sqlite: "+db_uri)
SQLSupport.setup_db(db_uri, echo=False, drop=True)
self.sql_consensus_listener = SQLSupport.ConsensusTrackerListener()
self.add_event_listener(self.sql_consensus_listener)
self.add_event_listener(SQLSupport.StreamListener())
def write_sql_stats(self, rfilename=None, stats_filter=None):
if not rfilename:
rfilename="./data/stats/sql-"+time.strftime("20%y-%m-%d-%H:%M:%S")
cond = threading.Condition()
def notlambda(h):
cond.acquire()
SQLSupport.RouterStats.write_stats(file(rfilename, "w"),
0, 100, order_by=SQLSupport.RouterStats.sbw,
recompute=True, disp_clause=stats_filter)
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
def write_strm_bws(self, rfilename=None, slice_num=0, stats_filter=None):
if not rfilename:
rfilename="./data/stats/bws-"+time.strftime("20%y-%m-%d-%H:%M:%S")
cond = threading.Condition()
def notlambda(this):
cond.acquire()
f=file(rfilename, "w")
f.write("slicenum="+str(slice_num)+"\n")
SQLSupport.RouterStats.write_bws(f, 0, 100,
order_by=SQLSupport.RouterStats.sbw,
recompute=False, disp_clause=stats_filter)
f.close()
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
def save_sql_file(self, sql_file, new_file):
cond = threading.Condition()
def notlambda(this):
cond.acquire()
SQLSupport.tc_session.close()
try:
shutil.copy(sql_file, new_file)
except Exception,e:
plog("WARN", "Error moving sql file: "+str(e))
SQLSupport.reset_all()
cond.notify()
cond.release()
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
def wait_for_consensus(self):
cond = threading.Condition()
def notlambda(this):
if this.sql_consensus_listener.last_desc_at \
!= SQLSupport.ConsensusTrackerListener.CONSENSUS_DONE:
this.sql_consensus_listener.wait_for_signal = False
plog("INFO", "Waiting on consensus result: "+str(this.run_all_jobs))
this.schedule_low_prio(notlambda)
else:
cond.acquire()
this.sql_consensus_listener.wait_for_signal = True
cond.notify()
cond.release()
plog("DEBUG", "Checking for consensus")
cond.acquire()
self.schedule_low_prio(notlambda)
cond.wait()
cond.release()
plog("INFO", "Consensus OK")
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