(完整word版)计算机网络课程设计(第五章)发送ARP数据包(完整程序代码)(word文档良心出品)

{
cout<<"mac address error"<<endl;
return 0;
}
else
{
if(mac[i]!='#43;+;
if(j>2)
{
cout<<"mac address errot"<<endl;
return 0;
}
else
j=0;
if(k>5)
{
cout<<"mac address error"<<endl;
int m=strlen(argv);
for(i=0;i<m;i++)
{
if(ip[i]<'.'||(ip[i]>'.'&&ip[i]<'0')||ip[i]>'9')
{
cout<<"IP address error!"<<endl;
return 0;
}
else
{
if(ip[i]!='.')
j++;
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')
j++;
ip_addr[i]=(unsigned 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"<<endl;
计算机网络课程设计
——机械工业出版社
第5章：发送ARP数据包
课程设计目的：
ARP协议用于完成IP地址与MAC地址之间的转换。熟悉ARP协议对于IP数据包的传送过程具有重要意义。本课程设计的主要目的是通过封装与发送ARP帧，了解ARP协议的工作原理与ARP帧的结构。
完整程序代码：
#include<iostream.h>
else
{
k++;
if(j>3)
{
cout<<"IP address error!"<<endl;
return 0;
}
else
j=0;
if(k>3)
{
cout<<"IP address error!"<<endl;
return 0;
}
}
}
}
for(i=0;i<4;i++)
{
while(*(ip+j)=='.')
unsigned short Flag;
unsigned char SrcMAC[6];
unsigned char SrcIP[4];
unsigned char DstMAC[6];
unsigned char DstIP[4];
unsigned char Padding[18];
}ARPFRAME;
return 0;
}
}
}
}
for(i=0;i<6;i++)
{
while(*(mac+j)=='-')
j++;
if(*(mac+j)>='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);
j++;
}
return 1;
}
int CheckIP(char *argv,unsigned char *ip_addr)
{
char ip[16];
int i=0,j=0,k=0;
strcpy(ip,argv);
return;
}
int i=0;
memset(&arpPacket,0,sizeof(arpPacket));
if(!CheckMAC(argv[4],arpPacket.phyFrame.DstMAC))
return;
if(!CheckMAC(argv[2],arpPacket.phyFrame.SrcMAC))
typedef struct ArpPacket
{
PHYFRAME phyFrame;
ARPFRAME arpFrame;
}*ARPPACKET;
ArpPacket arpPacket;
int CheckMAC(char *argv,unsigned char *mac_addr)
{
char mac[18];
#include<pcap.h>
#pragma comment(lib,"wpcap.lib")
#pragma comment(lib,"ws2_32.lib")
typedef struct PhyFrame
{
unsigned char DstMAC[6];
unsigned char SrcMAC[6];
int i=0,j=0,k=0;
strcpy(mac,argv);
int m=strlen(argv);
for(i=0;i<m;i++)
{
if(mac[i]<'-'||(mac[i]>'-'&&mac[i]<'0')||(mac[i]>'9'&&mac[i]<'A')||(mac[i]>'Z'&&mac[i]<'a')||mac[i]>'z')
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')
return;
arpPacket.phyFrame.FrameType=htons((unsigned short)0x0608);
arpPacket.arpFrame.HardwareType=(unsigned short)0x0100;
unsigned short FrameType;
}PHYFRAME;
typedef struct ArpFrame
{
unsigned short HardwareType;
unsigned short ProtocolType;
unsigned char MACLen;
unsigned char IPLen;