ADDRESS CONVERSION FOR LOGICAL ADDRESS INTO PHYSICAL ADDRESS
By karthick
, in
IMPLEMENTATION OF ADDRESS CONVERSION FOR LOGICAL ADDRESS INTO PHYSICAL ADDRESS
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Server program
#include
<stdio.h>
#include
<sys/types.h>
#include
<sys/shm.h>
int
main()
{
int
shmid; int a,i;
char
*ptr,*shmptr;
shmid=shmget(1200,10,IPC_CREAT|0666);
shmptr=shmat(shmid,NULL,0);
//attaching a ptr to shm area
ptr=shmptr;
for(i=0;i<3;i++)
{
puts("\n
Enter the MAC:");
scanf("%s",ptr);
a=strlen(ptr);
ptr[a]='
';
puts("\n
Enter the IP:");
ptr=ptr+a+1;
scanf("%s",ptr);
a=strlen(ptr);
ptr[a]='\n';
ptr=ptr+a+1;
}
ptr[strlen(ptr)]='\0';
printf("\n
THE ARP TABLE AT SERVER SIDE=\n %s",shmptr);
shmdt(shmptr); //detach
return
0;
}
Client program
#include
<stdio.h>
#include
<sys/types.h>
#include
<sys/shm.h>
int
main()
{
int
shmid; int a;
char
*ptr,*shmptr;
char
ip[20],mac[20],ptr2[20];
shmid=shmget(1200,10,0666);
shmptr=shmat(shmid,NULL,0);
puts("THE
ARP TABLE IS:");
printf("%s",shmptr);
printf("\n
1.ARP 2.RARP 3.EXIT\n");
scanf("%d",&a);
switch(a)
{
case
1:
puts("\n
Enter the IP address:");
scanf("%s",ip);
ptr=strstr(shmptr,ip);
ptr-=8;
sscanf(ptr,"%s
%*s",ptr2);
printf("\n
MAC address:%s",ptr2);
break;
case
2:
puts("\n
Enter the MAC address:");
scanf("%s",mac);
ptr=strstr(shmptr,mac);
sscanf(ptr,"%*s
%s",ptr2);
printf("%s",ptr2);
break;
case
3:
exit(1);
}
}
OUTPUT
SERVER
[11ca013@mcalinux
network]$ cc 10logarpser.c
[11ca013@mcalinux network]$ ./a.out
Enter the MAC:www.google.com
Enter the IP:192.1.1.1
Enter the MAC:www.yahoo.com
Enter the IP:192.1.1.2
Enter the MAC:www.zoho.com
Enter the IP:192.1.1.3
THE ARP TABLE AT SERVER SIDE=
www.google.com 192.1.1.1
www.yahoo.com
192.1.1.2
www.zoho.com
192.1.1.3
CLIENT
[11ca013@mcalinux network]$ cc 10logarpcli.c
THE
ARP TABLE IS:
www.google.com
192.1.1.1
www.yahoo.com
192.1.1.2
www.zoho.com
192.1.1.3
1.ARP 2.RARP 3.EXIT
2
Enter the MAC address:
Ip address is : 192.1.1.1
