1*a13597faSbluhm#!/usr/local/bin/python2.7 2*a13597faSbluhm# send Address Resolution Protocol Request 3*a13597faSbluhm# expect Address Resolution Protocol response and check all fields 4*a13597faSbluhm# RFC 826 An Ethernet Address Resolution Protocol 5*a13597faSbluhm# Packet Generation 6*a13597faSbluhm 7*a13597faSbluhmimport os 8*a13597faSbluhmfrom addr import * 9*a13597faSbluhmfrom scapy.all import * 10*a13597faSbluhm 11*a13597faSbluhmarp=ARP(op='who-has', hwsrc=LOCAL_MAC, psrc=LOCAL_ADDR, 12*a13597faSbluhm hwdst="ff:ff:ff:ff:ff:ff", pdst=REMOTE_ADDR) 13*a13597faSbluhmeth=Ether(src=LOCAL_MAC, dst="ff:ff:ff:ff:ff:ff")/arp 14*a13597faSbluhm 15*a13597faSbluhme=srp1(eth, iface=LOCAL_IF, timeout=2) 16*a13597faSbluhm 17*a13597faSbluhmif e and e.type == ETH_P_ARP: 18*a13597faSbluhm a=e.payload 19*a13597faSbluhm if a.hwtype != ARPHDR_ETHER: 20*a13597faSbluhm print "HWTYPE=%#0.4x != ARPHDR_ETHER" % (a.hwtype) 21*a13597faSbluhm exit(1) 22*a13597faSbluhm if a.ptype != ETH_P_IP: 23*a13597faSbluhm print "PTYPE=%#0.4x != ETH_P_IP" % (a.ptype) 24*a13597faSbluhm exit(1) 25*a13597faSbluhm if a.hwlen != 6: 26*a13597faSbluhm print "HWLEN=%d != 6" % (a.hwlen) 27*a13597faSbluhm exit(1) 28*a13597faSbluhm if a.plen != 4: 29*a13597faSbluhm print "PLEN=%d != 4" % (a.plen) 30*a13597faSbluhm exit(1) 31*a13597faSbluhm if a.op != 2: 32*a13597faSbluhm print "OP=%s != is-at" % (a.op) 33*a13597faSbluhm exit(1) 34*a13597faSbluhm if a.hwsrc != REMOTE_MAC: 35*a13597faSbluhm print "HWLOCAL=%s != REMOTE_MAC" % (a.hwsrc) 36*a13597faSbluhm exit(1) 37*a13597faSbluhm if a.psrc != REMOTE_ADDR: 38*a13597faSbluhm print "PLOCAL=%s != REMOTE_ADDR" % (a.psrc) 39*a13597faSbluhm exit(1) 40*a13597faSbluhm if a.hwdst != LOCAL_MAC: 41*a13597faSbluhm print "HWREMOTE=%s != LOCAL_MAC" % (a.hwdst) 42*a13597faSbluhm exit(1) 43*a13597faSbluhm if a.pdst != LOCAL_ADDR: 44*a13597faSbluhm print "PREMOTE=%s != LOCAL_ADDR" % (a.pdst) 45*a13597faSbluhm exit(1) 46*a13597faSbluhm print "arp reply" 47*a13597faSbluhm exit(0) 48*a13597faSbluhm 49*a13597faSbluhmprint "NO ARP REPLY" 50*a13597faSbluhmexit(2) 51