端口扫描工具

简单的多线程端口扫描工具

可以接收IP地址作为参数，如果不接参数，则默认扫描本机的端口

#!/usr/bin/python

import socket
import time
import argparse
import threading

def arg_process():
    argparser=argparse.ArgumentParser(description="Port Scaner")
    argparser.add_argument('-i','--ip',action='store',dest='ip',default='localhost')
    args=argparser.parse_args()
    ip=args.ip
    return ip

def scan(ip,port):
    if port>=65535:
        pass
    else:
        addr=(ip,port)
        sock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
        try:
            status=sock.connect_ex(addr)
            if status==0:
                print "%d opened"%port
        
        except:
            pass
        finally:
            sock.close()

def main(start,stop):
    ip=arg_process()
    for port in range(start,stop):
        scan(ip,port)


if __name__=='__main__':
    t1=time.time()
    threads=[]
    for i in range(20):
        t=threading.Thread(target=main,args=(3277*i,3277*(i+1)))
        threads.append(t)
    for t in threads:
        t.setDaemon(True)
        t.start()
    t.join()
    t2=time.time()
    delta=t2-t1
    print "It spend %d seconds"%delta