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HomeBackend DevelopmentPython TutorialPython扫描IP段查看指定端口是否开放的方法

本文实例讲述了Python扫描IP段查看指定端口是否开放的方法。分享给大家供大家参考。具体实现方法如下:

#!/usr/local/bin/python
#-*- coding: UTF-8 -*-
####################################################################
##################################################
#BLOG:http://hi.baidu.com/alalmn
# Python 扫描IP段 指定端口是否开放
##################################################
import socket
import threading,time
socket.setdefaulttimeout(10) #设置了全局默认超时时间
#查看IP端口是否开放
class socket_port(threading.Thread):
  def __init__(self,cond, name):
    super(socket_port, self).__init__()
    self.cond = cond
    self.cond.set()#将标识位设为Ture
    self.HOST = name
  def run(self):
    #time.sleep(1) #确保先运行Seeker中的方法
    try:
      PORT=21
      s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      s.connect((self.HOST,PORT))
      print""
      print self.HOST,u":",PORT,u"端口开放"
      #self.cond.wait()#堵塞线程,直到Event对象内部标识位被设为True或超时(如果提供了参数timeout)。
      self.cond.set()#将标识位设为Ture
      return 1
    except:
      print ".",
      #print self.HOST,u":",PORT,u"端口未开放"
      #self.cond.wait()#堵塞线程,直到Event对象内部标识位被设为True或超时(如果提供了参数timeout)。
      self.cond.set()#将标识位设为Ture
    return 0
##
#socket_port("192.168.2.1")
#if socket_port("192.168.2.100"):
#  print "开放"
#else:
#  print "未开放"
def ip2num(ip):
  ip = [int(x) for x in ip.split('.')]
  return ip[0]<<24 | ip[1]<<16 | ip[2]<<8 | ip[3]
def num2ip(num):
  #time.sleep(0.05) #50ms
  #time.sleep(0.1) #s
#  data='%s.%s.%s.%s' % ( (num & 0xff000000) >> 24,
#                 (num & 0x00ff0000) >> 16,
#                 (num & 0x0000ff00) >> 8,
#                 num & 0x000000ff )
#  #socket_port(data) #查看IP端口是否开放
  if num>=IPend:
    print u"IP导入数组完成"
  return '%s.%s.%s.%s' % ( (num & 0xff000000) >> 24,
               (num & 0x00ff0000) >> 16,
               (num & 0x0000ff00) >> 8,
               num & 0x000000ff )
def gen_ip(ip1,ip2): #返回数组
#  ip
#  global IPend
#  start, IPend = [ip2num(x) for x in ip.split('-')]
  global IPend
  IPend=ip2
  return [num2ip(num) for num in range(ip1,ip2+1) if num & 0xff]
import ini
if __name__=='__main__':
  ini.ini_get() #读取INI
  list_ip=gen_ip(ip2num(ini.IP1),ip2num(ini.IP2))
  I1 = 0 #得到list的第一个元素
  print u"开始扫描IP"
  ip=0
  while I1 < len(list_ip):
    #print list_ip[I1]
    time.sleep(0.3) #确保先运行Seeker中的方法
    cond = threading.Event()
    hider = socket_port(cond,list_ip[I1])
    hider.start()
    if ip>=255:
      ini.ini_write(list_ip[I1],ini.IP2) #修改INI
      print ip
      ip=0
    ip=ip+1
    I1 = I1 + 1  #一层

ini.py:

#!/usr/local/bin/python
#-*- coding: UTF-8 -*-
##################################################
#qq:316118740
#BLOG:http://hi.baidu.com/alalmn
# Python 操作ini文件
# 刚学写的不好请大家见谅
##################################################
IP1="" #扫描IP
IP2=""  #当前已经扫到的IP
INITXT="IP.ini" #INI文件名字
import ConfigParser
def ini_get(): #读取INI
  try:
    global IP1
    global IP2
    global INITXT
    config = ConfigParser.ConfigParser()
    config.readfp(open(INITXT))
    IP1 = config.get("ipdata","ip1")
    IP2 = config.get("ipdata","ip2")
  except:
    print "读取INI错误"
    ini_add("","") #写入INI
 
def ini_add(ip1,ip2): #写入INI
  try:
    global INITXT
    config = ConfigParser.ConfigParser()
    config.add_section("ipdata")# 设置section段及对应的值
    config.set("ipdata","ip1",ip1)
    config.set("ipdata","ip2",ip2)
    config.write(open(INITXT, "w"))# 写入文件
  except:
    print "写入INI错误"
def ini_write(ip1,ip2): #修改INI
  try:
    global INITXT
    config = ConfigParser.ConfigParser()
    config.read(INITXT)
    if not config.has_section("ipdata"):#看是否存在该Section,不存在则创建
      temp = config.add_section("")
    config.set("ipdata","ip1",ip1)
    config.set("ipdata","ip2",ip2)
    config.write(open(INITXT, "r+"))
  except:
    print "修改INI错误"
    ini_add("","") #写入INI
#if __name__=='__main__':
##  ini_get() #读取INI
##  print IP1
##  print IP2
#
##  ini_add("222222222","3333333333333") #写入INI
##  ini_get() #读取INI
##  print IP1
##  print IP2
#
#  ini_write("999999999","0000000000") #修改INI
#  ini_get() #读取INI
#  print IP1
#  print IP2

运行:

代码如下:

python TCP21.py

希望本文所述对大家的Python程序设计有所帮助。

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