python实现的多线程端口扫描功能示例

#!/usr/bin/env python#encoding: utf-8import socket, sys, thread, timeopenPortNum = 0socket.setdefaulttimeout(3)def usage():  print '''''Usage:  Scan the port of one IP: python port_scan_multithread.py -o <ip>  Scan the port of one IP: python port_scan_multithread.py -m <ip1, ip2, ip3, ip4 ...>  '''  print 'Exit'  sys.exit(1)def socket_port(ip, PORT):  global openPortNum  if PORT > 65535:    print 'Port scanning beyond the port range, interrupt to scan'    sys.exit(1)  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  result = s.connect_ex((ip, PORT))  if(result == 0):    print ip, PORT,'is open'    openPortNum += 1  s.close()def start_scan(IP):  for port in range(0, 65535+1):    thread.start_new_thread(socket_port, (IP, int(port)))    time.sleep(0.006)if __name__ == '__main__':  t = 0  if len(sys.argv)<2 or sys.argv[1] == '-h':    usage()  elif sys.argv[1] == '-o':    ONE_IP = raw_input('Please input ip of scanning: ')    t = time.time()    start_scan(ONE_IP)  elif sys.argv[1] == '-m':    MANY_IP = raw_input('Please input many ip of scanning: ')    IP_SEG = MANY_IP.split(',')    t = time.time()    for i in IP_SEG:      start_scan(i)  print  print 'total open port is %s, scan used time is: %f ' % (openPortNum, time.time()-t)