Python扫描端口

Python扫描端口

包含的知识点：

–多线程，锁
–socket

#encoding=utf-8# __author__ = 'wangshenglong'import socketimport threadingrouters = []lock = threading.Lock()# 实际上可以认为是端口扫描，程序只是粗略地检查是否开放了80端口。# timeout可以设置成1秒或2秒。local_ips是获取多块网卡上绑定的IP，比如我的IP地址是192.168.1.4和192.168.56.1。而代码所做的事情就是扫描 [192.168.1.1 ~ 192.168.1.254]  [192.168.56.1 ~ 192.168.56.254] 有哪些IP开放80端口。#def search_routers():    routers = []    # gethostname得到hostname，例如 wangshenglong-Mac.local    # gethostbyname_ex返回(name, aliaslist, addresslist)，例如('wangshenglong-mac.local', [], ['192.168.2.1', '192.168.56.1', '192.168.1.155'])    # 我的机器包含vboxnet0，bridge0，en0，获取ip：ifconfig |grep 'inet'|grep -v '127.0.0.1'|grep -v 'inet6' | sed -n '1p'|awk '{print $2}'，其中sed -n '1p'表示取第一行    #    print(socket.gethostbyname_ex(socket.gethostname()))    local_ips = socket.gethostbyname_ex(socket.gethostname())[2]    # get local IP    all_threads = []    for ip in local_ips:        for i in range(1, 255):            array = ip.split('.')            array[3] = str(i)            new_ip = '.'.join(array)            t = threading.Thread(target=check_ip, args=(new_ip,) )            t.start()            all_threads.append(t)    for t in all_threads:        t.join()def check_ip(new_ip):    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    s.settimeout(1)    result = s.connect_ex((new_ip, 80))    s.close()    if result == 0:        lock.acquire()        print new_ip.ljust(15), ' port 80 is open'        routers.append((new_ip, 80))        lock.release()print 'Searching for routers, please wait...'search_routers()

运行结果

192.168.2.1      port 80 is open192.168.56.1     port 80 is open192.168.1.155    port 80 is open192.168.1.1      port 80 is open192.168.1.250    port 80 is open192.168.1.252    port 80 is open