#!/usr/bin/env python
# isalive6.py is provided by 0x4D722E20446F6E
# Thread is modified from:
# Tutorial on Threads Programming with Python by Norman Matloff & Francis Hsu

import sys,os,re,time,threading

class ping6(threading.Thread):
 ping6list = []
 maxthreads = 10 #Increasing this number is bad idea :)
 evnt = threading.Event()
 lck = threading.Lock()

 def __init__(self,cnt,ip):
  threading.Thread.__init__(self);
  self.ip = ip
  self.status = -1
  self.count = cnt

 def run(self):
  logfile = open("isalive6.log","a")
  pin,pout,perr = os.popen3("ping6 -c2 -s 0 "+self.ip,"r")
  pin.close()
  cmdout = pout.readlines()
  igot = re.search("8 bytes from",cmdout[1])
  if igot:
   print str(self.count)+" : [REACHED] "+self.ip
   record = str(self.count)+" : [REACHED] "+self.ip+"\n"
   logfile.write(record)
  else:
   print str(self.count)+" : [NOT REACHED] "+self.ip
  logfile.close()
   
  ping6.lck.acquire()
  ping6.ping6list.remove(self)
  if len(ping6.ping6list) == ping6.maxthreads-1:
   ping6.evnt.set()
   ping6.evnt.clear()
  ping6.lck.release()

 def newthread(count,hst):
  ping6.lck.acquire()
  pg6 = ping6(count,hst)
  ping6.ping6list.append(pg6)
  ping6.lck.release()
  pg6.start()
 newthread = staticmethod(newthread)

def main():
 if len(sys.argv) !=2:
  print "Usage : python " +  sys.argv[0] + " <IPv6 List File>"
  sys.exit(0);

 os.unlink("isalive6.log")
 print time.ctime()
 n = 1
 input = open(sys.argv[1],"r")
 for host in input:
  ping6.lck.acquire()
  if len(ping6.ping6list) >= ping6.maxthreads:
   ping6.lck.release()
   ping6.evnt.wait()
  else:
   ping6.lck.release()
  ping6.newthread(n,host.rstrip())
  n+=1

 for pingle in ping6.ping6list:
  pingle.join()

 print time.ctime()
 print "Total Host Scanned : %i"%(n)

if __name__ == '__main__':
 main()

# This code is somewhat buggy when route to the unreachable network