扫描端口占用情况的python脚本

1. 
   

2. 转载自https://blog.51cto.com/babyhanggege/1940700?cid=693825#693825

3. 记录下来供个人学习
   

4. pthon2下代码如下

6. #!/usr/bin/env python
   # -*- coding:utf-8 -*-
   # used for pthon2.*
      
   import socket, time, thread
   socket.setdefaulttimeout(3) #设置默认超时时间
     
   def socket_port(ip, port):
       """
             输入IP和端口号，扫描判断端口是否占用
       """
       try:
           if port >=65535:
               print u'端口扫描结束'
           s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
           result=s.connect_ex((ip, port))
           if result==0:
               lock.acquire()
               print ip,u':',port,u'端口已占用'
               lock.release()
       except:
           print u'端口扫描异常'
     
   def ip_scan(ip):
       """
        输入IP，扫描IP的0-65534端口情况
       """
       try:
           print u'开始扫描 %s' % ip
           start_time=time.time()
           for i in range(0,65534):
               thread.start_new_thread(socket_port,(ip, int(i)))
           print u'扫描端口完成，总共用时：%.2f' %(time.time()-start_time)
    #          raw_input("Press Enter to Exit")
       except:
           print u'扫描ip出错'
     
   if __name__=='__main__':
       url=raw_input('Input the ip you want to scan: ')
       lock=thread.allocate_lock()
       ip_scan(url)

   

    python3的代码：

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# used  for python3.*
import socket,time,_thread
socket.setdefaulttimeout(3) #设置默认超时时间
 
def socket_port(ip, port):
    """
    输入IP和端口号，扫描判断端口是否占用
    """
    try:
        if port >=65535:
            print (u'端口扫描结束')
        s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        result=s.connect_ex((ip, port))
        if result==0:
            lock.acquire()
            print (ip,u':',port,u'端口已占用')
            lock.release()
    except:
        print (u'端口扫描异常')
   
def ip_scan(ip):
    """
    输入IP，扫描IP的0-65534端口情况
    """
    try:
        print (u'开始扫描 %s' % ip)
        start_time=time.time()
        for i in range(0,65534):
            _thread.start_new_thread(socket_port,(ip, int(i)))
        print (u'扫描端口完成，总共用时：%.2f' %(time.time()-start_time))
    # raw_input("Press Enter to Exit")
    except:
        print (u'扫描ip出错')
   
if __name__=='__main__':
    url=input('Input the ip you want to scan: ')
    lock=_thread.allocate_lock()
    ip_scan(url)