加载虚拟IP发送ARP包

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1、#include#include#include#include#include#include#include#include#include#include#includeusingnamespacestd;enum{ARP_MSG_SIZE=0

2、x2a};char*strncpy_IFNAMSIZ(char*dst,constchar*src){#ifndefIFNAMSIZenum{IFNAMSIZ=16};#endifreturnstrncpy(dst,src,IFNAMSIZ);}structarpMsg{/*Ethernetheader*/uint8_th_dest[6];/*00destinationetheraddr*/uint8_th_source[6];/*06sourceetheraddr*/uint16_th_proto;/*0cpackettypeIDfiel

3、d*//*ARPpacket*/uint16_thtype;/*0ehardwaretype(mustbeARPHRD_ETHER)*/uint16_tptype;/*10protocoltype(mustbeETH_P_IP)*/uint8_thlen;/*12hardwareaddresslength(mustbe6)*/uint8_tplen;/*13protocoladdresslength(mustbe4)*/uint16_toperation;/*14ARPopcode*/uint8_tsHaddr[6];/*16sender'

4、shardwareaddress*/uint8_tsInaddr[4];/*1csender'sIPaddress*/uint8_ttHaddr[6];/*20target'shardwareaddress*/uint8_ttInaddr[4];/*26target'sIPaddress*/uint8_tpad[18];/*2apadformin.ethernetpayload(60bytes)*/}PACKED;constintconst_int_1=1;intsetsockopt_broadcast(intfd){returnsetso

5、ckopt(fd,SOL_SOCKET,SO_BROADCAST,&const_int_1,sizeof(const_int_1));}char*safe_strncpy(char*dst,constchar*src,size_tsize){if(!size)returndst;dst[--size]='/0';returnstrncpy(dst,src,size);}intarpping(uint32_ttest_ip,uint32_tfrom_ip,uint8_t*from_mac,constchar*interface){inttim

6、eout_ms;ints;intrv=1;/*"noreplyreceived"yet*/structsockaddraddr;/*forinterfacename*/structarpMsgarp;s=socket(PF_PACKET,SOCK_PACKET,htons(ETH_P_ARP));if(s==-1){perror("raw_socket");return-1;}if(setsockopt_broadcast(s)==-1){perror("cannotenablebcastonrawsocket");gotoret;}/*s

7、endarprequest*/memset(&arp,0,sizeof(arp));memset(arp.h_dest,0xff,6);/*MACDA*/memcpy(arp.h_source,from_mac,6);/*MACSA*/arp.h_proto=htons(ETH_P_ARP);/*protocoltype(Ethernet)*/arp.htype=htons(ARPHRD_ETHER);/*hardwaretype*/arp.ptype=htons(ETH_P_IP);/*protocoltype(ARPmessage)*/

8、arp.hlen=6;/*hardwareaddresslength*/arp.plen=4;/*protocoladdresslength*/arp.operation=hto