python 端口扫描程序

时间：2023-03-10 02:33:08
python 端口扫描程序 
#! /usr/bin/env python3

#-*- coding:utf-8 -*-

import socket

import threading

OPEN_COUNT = 0

lock = threading.Lock()

threads = []

def testPort(host, port):

    global OPEN_COUNT

    s = socket.socket()

    try:

        s.connect((host, port))

        print('[+] {} open'.format(port))

        lock.acquire()

        OPEN_COUNT += 1

        lock.release()

    except: pass

    finally: s.close()

def scanPorts(host, ports, max_thread_num=10):

    socket.setdefaulttimeout(1)

    global threads

    for p in range(ports[0], ports[1]+1):

        t = threading.Thread(target=testPort, args=(host, p))

        try:

            t.start()

            threads.append(t)

        except RuntimeError:

            pass

        if len(threads) % max_thread_num == 0:

            for t in threads:

                t.join()  #等待max_thread_num个线程结束之后再重新开始一轮新的线程

            threads=[]

    for t in threads:

        t.join()

    print('Total is {}'.format(OPEN_COUNT))

if __name__ == '__main__':

    import sys

    if len(sys.argv) == 4:

        scanPorts(sys.argv[1], (int(sys.argv[2]), int(sys.argv[3])))

    elif len(sys.argv) == 5:

        scanPorts(sys.argv[1], (int(sys.argv[2]), int(sys.argv[3])), int(sys.argv[4]))

这是用python编写的一个端口扫描程序，是从别人代码拷贝过来的，作者不详。

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