ARP協(xié)議獲得局域網(wǎng)內(nèi)活動主機物理地址程序

＜ARP工程設(shè)計報告需求分析試驗?zāi)康模菏褂肁RP覺察局域網(wǎng)內(nèi)活動主機，自行構(gòu)造、發(fā)送ARP懇求ARP〔1〕ARPARPMACwindows/linux配器〔網(wǎng)卡〕發(fā)送的根本方法。試驗環(huán)境：1~2PC操作系統(tǒng)：WindowsXP開發(fā)環(huán)境：MicrosoftVisualC++6.0，winpcap；MFC1.1問題重述arp數(shù)據(jù)幀格式和字段含義以及arp協(xié)議運作過程Winpcap開發(fā)包的使用方法，windows平臺構(gòu)造自定義數(shù)據(jù)幀，并通過指定的網(wǎng)絡(luò)適配器發(fā)送的根本過程。應(yīng)用現(xiàn)狀綜述：802.3MAC〔MediaAccessControl〕地址〔即物理地址〕進展通信?！矓?shù)據(jù)鏈路層IP。無論是任何高層協(xié)議的通信，最終都將轉(zhuǎn)換為數(shù)據(jù)鏈路層的MACARP網(wǎng)絡(luò)通信的根底協(xié)議。MACARPARPARPIP-MAC概要設(shè)計原理概述1在網(wǎng)際協(xié)議中定義的是因特網(wǎng)的IP地址,但在實際進展通信時,物理層IP間建立映射關(guān)系，地址之間的這種映射稱為地址解析。IEEE3IPARPIPA〔源主機〕D〔目的主機〕DAARP協(xié)議工作的過程如下：AARPIPIPDARPIPIPAARPD為了提高效率，ARP協(xié)議使用了高速緩存技術(shù)。在每臺使用ARP的主機中，都保存了一個專用的內(nèi)存區(qū)，一收到ARP應(yīng)答，主機就將獲得的IP地址和物理地址存入緩存。以后每次要發(fā)送報文時，首先到緩存中查找有無相應(yīng)的項，假設(shè)找不到，再利用ARP進展地址解析。由于多數(shù)網(wǎng)絡(luò)通信都要連續(xù)發(fā)送多個報文，所以高速緩存大大提高ARPARPIP在播送ARP“IP地址——物理地址”的地址對并將其存入自己的緩存。在主機入網(wǎng)時，令其主動播送其地址映射，以削減其他主機進展ARP懇求。網(wǎng)卡具有如下的幾種工作模式：播送模式〔BroadCastModel〕:它的物理地址〔MAC〕0Xffffff的幀為播送幀，工作在播送模式的網(wǎng)卡接收播送幀。多播傳送〔MultiCastModel以被組內(nèi)的其它主機同時接收，而組外主機卻接收不到。但是，假設(shè)將不是組內(nèi)成員。工作在直接模式下的網(wǎng)卡只接收目地址是自己Mac混雜模式〔PromiscuousModel〕:工作在混雜模式下的網(wǎng)卡接收全部的流過網(wǎng)卡的幀，信包捕獲程序就是在這種模式下運行的。ARP1兩個字節(jié)長的以太網(wǎng)幀類型表示后面數(shù)據(jù)的類型。對于ARP0X0806.1；協(xié)議類型字段：表示要映射的協(xié)議地址類型，IP0X0800；度，這樣ARPIPARP64；ARP1，ARP2，RARP3，RARP4；發(fā)送端的以太網(wǎng)地址：源主機硬件地址，6IP〔IP，4目的以太網(wǎng)地址：目的端硬件地址，6IP〔IP，42主要問題ARP相關(guān)數(shù)據(jù)幀構(gòu)造ARP程序的流程Winpcap開發(fā)包的使用方法解決思路：先查找資料，深入把握ARPARP程序的流程進展生疏。查閱資料，把握Winpcap開發(fā)包的使用方法。實現(xiàn)預(yù)期目標的可行性分析：ARPTCP/IPIPWinpcap在教師的細心指導下，本課題中遇見的問題可以迎刃而解。順當完成程序的開發(fā)。ARP，ARP絡(luò)，協(xié)議的進展。其次章主要描述網(wǎng)絡(luò)根底學問和ARP協(xié)議的原理，幀構(gòu)造等相ARPVisualC++和WinpcapARPARP2.3數(shù)據(jù)構(gòu)造structethernet_head{unsignedchardest_mac[6]; //MACunsignedcharsource_mac[6];unsignedshorteh_type;};

/MAC//以太網(wǎng)類型structarp_head{unsignedshorthardware_type;unsignedshortprotocol_type;unsignedcharadd_len;unsignedcharpro_len;unsignedshortoption;unsignedcharsour_addr[6];

//1//協(xié)議類型：IP0X0800//硬件地址長度：MAC6B//協(xié)議地址長度：IP4B//操作：ARP1，ARP2/MACMACunsignedlongsour_ip; //IPIPunsignedchardest_addr[6]; //MACARP段沒有意義；ARPMACdg; /PP地址；ARPIPunsignedcharpadding[18];};structarp_packet{ethernet_headeth;arp_headarp;};

//arp//以太網(wǎng)頭部//arp具體設(shè)計主要函數(shù)說明/*****************物理幀頭部構(gòu)造*****************/typedefstruct ethernet_head{unsignedchar eh_dest_mac[6];unsignedchar eh_source_mac[6];unsignedshort eh_type;

//目標主機mac//本地主機mac//類型}ethernet_head,*pEthernetHead;/*************ARP幀構(gòu)造*************/typedefstruct arpHead{unsignedshortarp_hardwaretype;//硬件類型(2bit)unsignedshortarp_protocoltype;//協(xié)議類型(2bit)unsignedchararp_har_len;//硬件地址長度(1bit)unsignedchararp_pro_len;//協(xié)議地址長度(1bit)unsignedshortarp_option;//操作號(2bit)unsignedchararp_sour_addr[6];//源硬件地址(6bit)unsignedlongarp_sour_ip;//源協(xié)議地址(4bit)unsignedchararp_dest_addr[6];//目的硬件地址(6bit)unsignedlongarp_dest_ip;//目的協(xié)議地址(4bit)unsignedcharpadding[18];//填充數(shù)據(jù)(18bit)}arpHead,*pArpHead;/*****************IP數(shù)據(jù)報頭構(gòu)造*****************/typedefstruct ipHead{unsignedchar h_lenver; //版本(4bits)+首部長度(4bits)unsignedchar tos; //效勞類型(Typeofservice)unsignedshort total_len; //總長(Totallength)unsignedshort ident; //標識(Identification)unsignedshort frag_and_flags; //標志位(Flags)(3bits)+段偏移量(Fragmentoffset)(13bits)unsignedcharttl;//存活時間(Timetolive)unsignedcharproto;//協(xié)議(Protocol)unsignedshortchecksum;//首部校驗和(Headerchecksum)unsignedintsourceip;//源地址(Sourceaddress)unsignedintdestip;//目的地址(Destinationaddress)}ipHead,*PipHead;#pragmapack(push)LPADAPTER lpadapter=0; //defineapointertoanADAPTERstructure設(shè)備指針LPPACKET lppacketr,lppackets; //defineapointertoaPACKETstructure包指針unsignedlong myip; //本地主機IPunsignedcharmymac[6]={0};//本地主機mac初始化charadapterlist[MAX_NUM_ADAPTER][1024];//本地主機網(wǎng)卡列表int增num=0;//用于發(fā)送ARP包時候遞voidstart{printf(“************************************\n“);printf(“*printf(“*局域網(wǎng)內(nèi)活動主機檢測*\n“);*\n“);printf(“*07微電子董巍2120230223*\n“);printf(“**\n“);printf(“************************************\n“);return;}/***********************獲得本地主機的mac地址***********************/intgetmine{char sendbuf[1024];int k;ethernet_head eth;arpHead arp;for(k=0;k<6;k++){eth.eh_dest_mac[k] =0xff;eth.eh_source_mac[k]=0x82;arp.arp_sour_addr[k]=0x82;arp.arp_dest_addr[k]=0x00;}eth.eh_type=htons(ETH_ARP);arp.arp_hardwaretype=htons(ARP_HARDWARE);arp.arp_protocoltype=htons(ETH_IP);arp.arp_har_len=6;arp.arp_pro_len=4;arp.arp_option=htons(ARP_REQUEST);arp.arp_dest_ip=htonl(myip);arp.arp_sour_ip=inet_addr(“112.112.112.112“);memset(sendbuf,0,sizeof(sendbuf));memcpy(sendbuf,e,sizeof(eth));memcpy(sendbuf+sizeof(eth),&arp,sizeof(arp));PacketInitPacket(lppackets,sendbuf,sizeof(eth)+sizeof(arp));if(PacketSendPacket(lpadapter,lppackets,TRUE)==FALSE){printf(“PacketSendPacketingetmineError:%d\n“,GetLastError);return-1;}return0;}/*****************解析數(shù)據(jù)報*****************/voidreceivedata(LPPACKETlppktr){unsignedlong ulbytesreceived,off;unsignedlong j;char *buf,*pChar,*base;PipHead ip;structbpf_hdr *hdr;structsockaddr_in sin;ethernet_head *eth;arpHead *arp;ulbytesreceived=lppktr->ulBytesReceived;buf=(char*)lppktr->Buffer;off=0;//解析數(shù)據(jù)報while(off<ulbytesreceived){

//數(shù)據(jù)報頭部if(kbhit){return;}hdr=(structbpf_hdr*)(buf+off);off+=hdr->bh_hdrlen;

//數(shù)據(jù)報頭部長度pChar=(char*)(buf+off);base=pChar;off=Packet_WORDALIGN(off+hdr->bh_caplen);eth=(pEthernetHead)pChar;arp=(pArpHead)(pChar+sizeof(ethernet_head));if(eth->eh_type==htons(ETH_IP)){ip=(PipHead)(pChar+sizeof(ethernet_head));}else if((eth->eh_type==htons(ETH_ARP)) &&(arp->arp_option==htons(ARP_REPLY))){sin.sin_addr.s_addr=arp->arp_sour_ip;if(sin.sin_addr.s_addr==htonl(myip)){memcpy(mymac,eth->eh_source_mac,6);}//ip地址printf(“\n[IP:] %.16s[MAC:]“,inet_ntoa(sin.sin_addr));//mac地址for(j=0;j<5;j++){printf(“%.2x-“,eth->eh_source_mac[j]);}printf(“%.2x\n“,eth->eh_source_mac[5]);}}return;}/*************************************************將網(wǎng)卡設(shè)置為混雜模式，接收全部流過的數(shù)據(jù)報************************************************/DWORDWINAPIsniff(LPVOIDno){char recvbuf[1024*250];//設(shè)置網(wǎng)卡為混雜模式失敗if(PacketSetHwFilter(lpadapter,NDIS_PACKET_TYPE_PROMISCUOUS)==FALSE){printf(“Warning:Unabletosettheadaptertopromiscuousmode\n“);}//500*1024失敗,返回錯誤代碼if(PacketSetBuff(lpadapter,500*1024)==FALSE){printf(“PacketSetBuffError:%d\n“,GetLastError);return -1;}//設(shè)置接收一個數(shù)據(jù)報后等待的時間為1毫秒失敗if(PacketSetReadTimeout(lpadapter,1)==FALSE){printf(“Warning:Unabletosetthetimeout\n“);}//接收PACKET指針失敗if((lppacketr=PacketAllocatePacket)==FALSE){printf(“PacketAllocatePacketreceiveError!“);return -1;}//初始化一個_PACKET構(gòu)造PacketInitPacket(lppacketr,(char*)recvbuf,sizeof(recvbuf));//NPF解析函數(shù)while(!kbhit){if(PacketReceivePacket(lpadapter,lppacketr,TRUE)==FALSE){if(GetLastError==6)return0;printf(“PacketReceivePacketError:%d\n“,GetLastError);return-1;}receivedata(lppacketr);}return0;}/***********************************************ARPRequest數(shù)據(jù)報，懇求獲得目的ipmac地址***********************************************/DWORDWINAPItransmit(LPVOIDno){int i;char sendbuf[1024]; //發(fā)送緩存ethernet_head eth;arpHead arp;/****************************************************macip地址，以本地主機mac地址作為源地址，*以物理播送地址作為物理幀目的地址，*ARP0****************************************************/for(i=0;i<6;i++){eth.eh_dest_mac[i] =0xff;arp.arp_dest_addr[i]=0x00;}memcpy(eth.eh_source_mac,mymac,6);eth.eh_type=htons(ETH_ARP);arp.arp_hardwaretype=htons(ARP_HARDWARE); 1616位的網(wǎng)絡(luò)字節(jié)挨次arp.arp_protocoltype=htons(ETH_IP); //0x0800arp.arp_har_len=6;arp.arp_pro_len=4;arp.arp_option=htons(ARP_REQUEST); //1arp.arp_sour_ip=htonl(myip); //將本機ip地址作為源ip地3232位的網(wǎng)絡(luò)字節(jié)挨次memcpy(arp.arp_sour_addr,mymac,6); //本機mac地址作為源mac地址arp.arp_dest_ip=htonl((myip&0xffffff00)+1+(num++)); //本地主機IP與子網(wǎng)掩碼“與”運算得到網(wǎng)關(guān)IPmemset(sendbuf,0,sizeof(sendbuf)); //初始化發(fā)送緩存memcpy(sendbuf,e,sizeof(eth)); //把eth放入發(fā)送緩存memcpy(sendbuf+sizeof(eth),&arp,sizeof(arp)); //arp放入發(fā)送緩存//初始化一個_PACKET構(gòu)造PacketInitPacket(lppackets,sendbuf,sizeof(eth)+sizeof(arp));//發(fā)送數(shù)據(jù)報，不成功時退出if(PacketSendPacket(lpadapter,lppackets,TRUE)==FALSE){printf(“PacketSendPacketintransmitError:&d\n“,GetLastError);return-1;}return0;}/****************************************************************主函數(shù):首先獲得本地主機網(wǎng)卡數(shù)量,如有多塊網(wǎng)卡由用戶翻開指定網(wǎng)卡*調(diào)用函數(shù)發(fā)送和解析ARP數(shù)據(jù)報****************************************************************/intmain(intargc,char*argv[]){HANDLEsthread,rthread;DWORDthreadsid,threadrid;unsignedcharadaptername[8192];unsignedchar*name1,*name2;unsignedlongadapterlength;struct NetTypentype;struct bpf_statstat;struct sockaddr_insin;struct npf_if_addripbuff;intadapternum=0;//0intopen;//標識翻開第幾塊網(wǎng)卡intopti=1;intk;longnpflen;system(“cls.exe“); //清屏start;adapterlength=sizeof(adaptername);/**********************************************************獲得本地主機網(wǎng)卡列表和描述，*將返回的本地主機中安裝的網(wǎng)卡的名字放在緩沖區(qū)adaptername中**********************************************************/if(PacketGetAdapterNames((char*)adaptername,&adapterlength)==FALSE){printf(“PacketGetAdapterNamesError:%d\n“,GetLastError);return-1;}name1=adaptername;name2=adaptername;k=0;//計算網(wǎng)卡個數(shù)while((*name1!=”\0”)||(*(name1-1)!=”\0”)){if(*name1==”\0”){memcpy(adapterlist[k],name2,(name1-name2)*2);name2=name1+1;k++;}name1++;}//將網(wǎng)卡名稱存入adapterlist，分別輸出網(wǎng)卡名稱adapternum=k;printf(“\n[本機網(wǎng)卡列表:]\n“);for(k=0;k<ADAPTERNUM;K++)-printf(?%d>%s\n“,k+1,adapterlist[k]);//翻開指定的網(wǎng)卡do{printf(“\n請選擇要翻開的網(wǎng)卡號:“);scanf(“%d“,&open);if(open>=1&&open<=adapternum)break;}while(open<1||open>adapternum);lpadapter=PacketOpenAdapter(adapterlist[open-1]);//網(wǎng)卡無法翻開時，出示錯誤信息：if(!lpadapter||(lpadapter->hFile==INVALID_HANDLE_VALUE)){printf(“PacketOpenAdapterError:%d\n“,GetLastError);return-1;}//輸出指定網(wǎng)卡的MAC類型if(PacketGetNetType(lpadapter,&ntype)){printf(“\n\n******本地主機信息******\n\n“);printf(“[連接類型: ]\t%d\t\t\n“,ntype.LinkType);printf(“[連接速度: ]\t%db/s\n“,ntype.LinkSpeed);}//輸出指定網(wǎng)卡的相關(guān)信息npflen=sizeof(ipbuff);if(PacketGetNetInfoEx(adapterlist[open-1],&ipbuff,&npflen)){sin=*(structsockaddr_in*)&(ipbuff.Broadcast);printf(“[播送地址: ]\t%.16s\t\n“,inet_ntoa(sin.sin_addr));sin=*(structsockaddr_in*)&(ipbuff.SubnetMask);printf(“[子網(wǎng)掩碼: ]\t%.16s\n“,inet_ntoa(sin.sin_addr));sin=*(structsockaddr_in*)&(ipbuff.IPAddress);printf(“[本機IP地址:]\t%.16s\t\n\n\n“,inet_ntoa(sin.sin_addr));myip=ntohl(sin.sin_addr.s_addr); //本機IP地址}else{}

printf(“\nNotgetenoughdata\n“);PacketFreePacket(lppackets);PacketCloseAdapter(lpadapter);return-1;if((lppackets=PacketAllocatePacket)==FALSE){printf(“PacketAll