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1、精選優(yōu)質(zhì)文檔-----傾情為你奉上
計(jì)算機(jī)網(wǎng)絡(luò)課程設(shè)計(jì)
——機(jī)械工業(yè)出版社
第5章：發(fā)送ARP數(shù)據(jù)包
課程設(shè)計(jì)目的：
ARP協(xié)議用于完成IP地址與MAC 地址之間的轉(zhuǎn)換。熟悉ARP協(xié)議對(duì)于IP數(shù)據(jù)包的傳送過程具有重要意義。本課程設(shè)計(jì)的主要目的是通過封裝與發(fā)送ARP幀，了解ARP協(xié)議的工作原理與ARP幀的結(jié)構(gòu)。
完整程序代碼：
#include
#include
#pragma comment(lib,"wpcap.lib")
#pragma comment(lib,"ws2_32.lib")
typedef stru
2、ct PhyFrame
{
unsigned char DstMAC[6];
unsigned char SrcMAC[6];
unsigned short FrameType;
}PHYFRAME;
typedef struct ArpFrame
{
unsigned short HardwareType;
unsigned short ProtocolType;
unsigned char MACLen;
unsigned char IPLen;
unsigned short Flag;
unsigned char SrcMAC[6];
3、
unsigned char SrcIP[4];
unsigned char DstMAC[6];
unsigned char DstIP[4];
unsigned char Padding[18];
}ARPFRAME;
typedef struct ArpPacket
{
PHYFRAME phyFrame;
ARPFRAME arpFrame;
}*ARPPACKET;
ArpPacket arpPacket;
int CheckMAC(char *argv,unsigned char *mac_addr)
{
char ma
4、c[18];
int i=0,j=0,k=0;
strcpy(mac,argv);
int m=strlen(argv);
for(i=0;i-&&mac[i]<0)||(mac[i]>9&&mac[i]Z&&mac[i]z)
{
cout<<"mac address error"<
5、++;
else
{
k++;
if(j>2)
{
cout<<"mac address errot"<5)
{
cout<<"mac address error"<
6、)>=0&&*(mac+j)<=9)
mac_addr[i]=(unsigned char)(*(mac+j)-0);
if(*(mac+j)>=a&&*(mac+j)<=z)
mac_addr[i]=(unsigned char)(*(mac+j)-a+10);
if(*(mac+j)>=A&&*(mac+j)<=Z)
mac_addr[i]=(unsigned char)(*(mac+j)-A+10);
j++;
mac_addr[i]*=16;
if(*(mac+j)>=0&&*(mac+j)<=9)
m
7、ac_addr[i]+=(unsigned char)(*(mac+j)-0);
if(*(mac+j)>=a&&*(mac+j)<=z)
mac_addr[i]+=(unsigned char)(*(mac+j)-a+10);
if(*(mac+j)>=A&&*(mac+j)<=Z)
mac_addr[i]+=(unsigned char)(*(mac+j)-A+10);
j++;
}
return 1;
}
int CheckIP(char *argv,unsigned char *ip_addr)
{
char ip[16];
int
8、 i=0,j=0,k=0;
strcpy(ip,argv);
int m=strlen(argv);
for(i=0;i.&&ip[i]<0)||ip[i]>9)
{
cout<<"IP address error!"<
9、(j>3)
{
cout<<"IP address error!"<3)
{
cout<<"IP address error!"<
10、ned char)atoi(ip+j);
}
return 1;
}
void main(int argc,char *argv[])
{
if(argc!=5)
{
cout<<"please input command: SendArp source_ip source_mac dest_ip dest_mac"<
11、ame.DstMAC))
return;
if(!CheckMAC(argv[2],arpPacket.phyFrame.SrcMAC))
return;
arpPacket.phyFrame.FrameType=htons((unsigned short)0x0608);
arpPacket.arpFrame.HardwareType=(unsigned short)0x0100;
arpPacket.arpFrame.ProtocolType=(unsigned short)0x0008;
arpPacket.arpFrame.MACLen=(uns
12、igned char)6;
arpPacket.arpFrame.IPLen=(unsigned char)4;
if(!CheckMAC(argv[2],arpPacket.arpFrame.SrcMAC))
return;
if(!CheckIP(argv[1],arpPacket.arpFrame.SrcIP))
return;
if(!CheckMAC(argv[4],arpPacket.arpFrame.DstMAC))
return;
if(!CheckIP(argv[3],arpPacket.arpFrame.DstIP))
retur
13、n;
for(i=0;i<18;i++)
arpPacket.arpFrame.Padding[i]=0;
pcap_if_t *alldevs;
pcap_if_t *d,*head=NULL;
pcap_t *fp;
char errbuf[PCAP_ERRBUF_SIZE];
if(pcap_findalldevs(&alldevs,errbuf)==-1)
{
cout<<"Unable to create adapter list!"<
14、lldevs;d;d=d->next)
{
cout<<++i<<": "<name;
if(d->description)
cout<<" "<description<>k;
if(k<1||k>i)
{
cout
15、<<"Out of range!"<next,i++);
head=d;
if((fp=pcap_open_live(head->name,1000,1,1000,errbuf))==NULL)
{
cout<<"Unable to open the adapter!"<
16、igned char*)&arpPacket,sizeof((unsigned char*)&arpPacket))==-1)
{
cout<<"ARP packet send error!"<
計(jì)算機(jī)網(wǎng)絡(luò)課程設(shè)計(jì)(第五章)發(fā)送ARP數(shù)據(jù)包(完整程序代碼)(共6頁)
