#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>
#include <ncurses.h>
#define DEV_FILE	"/proc/net/dev"
#define NR	100


  FILE *f;
  char line[150],lineb[150];
  struct D
  {
   char dev[10];
   double b_in;
   double b_out;
   double p_in;
   double p_out;
  } d[NR],a[NR],t;  
  char *ptr, *name;
  char dev[10],col1[25],col2[25],col3[25],col4[25];         
  int i,j,k;
  double kb=1024;               
  struct itimerval del;
  int interval;  
 int cit() 
 {
  if((f=fopen(DEV_FILE, "r"))==NULL) 
   {
    fprintf(stderr, "/proc/net/dev does not exist?\n");
    exit(2);
   }
  fgets(line, 135, f);
  fgets(line, 135, f);
  j=0;k=0;                                         
  while(fgets(line, 135, f)) 
  {
   strcpy(dev,"");
   ptr = line;
       while(*ptr == ' ') ptr++;
   ptr--;    
   while(*ptr != ':') 
   {
    ptr++;           
    strncat(dev,ptr,1);
   }
   strcpy(t.dev,dev);
   ptr++;
   strcpy(col1,"");
   while(*ptr != ' ')
    {
    strncat(col1,ptr,1);
    ptr++;
    }
   
//   printf("%s ",col1);

   while(*ptr == ' ') ptr++;

   strcpy(col2,"");
   while(*ptr != ' ')
    {
    strncat(col2,ptr,1);
    ptr++;
    }
   
//   printf("%s ",col2);

   for(i=0;i<6;i++)
    {
     while(*ptr == ' ') ptr++;
     while(*ptr != ' ') ptr++;
    } 
   while(*ptr == ' ') ptr++;
   



   strcpy(col3,"");
   while(*ptr != ' ')
    {
    strncat(col3,ptr,1);
    ptr++;
    }
   
//   printf("%s ",col3);

   while(*ptr == ' ') ptr++;

   strcpy(col4,"");
   while(*ptr != ' ')
    {
    strncat(col4,ptr,1);
    ptr++;
    }
   
//   printf("%s ",col4);

   t.b_in = atof(col1);
   t.p_in = atof(col2);
   t.b_out = atof(col3);
   t.p_out = atof(col4);
   if(t.b_in != 0)
    {
    k++;
    strcpy(d[k].dev,t.dev);
/*    printf("%s ",d[k].dev);*/
    d[k].b_in = t.b_in;
    d[k].b_out = t.b_out;
    d[k].p_in = t.p_in;
    d[k].p_out = t.p_out;
/*    printf("%f %f %f %f",d[k].b_in,d[k].b_out,d[k].p_in,d[k].p_out);
    printf("\n");*/
    }


  
  }
}

void siga()
{
for(j=1;j<=k;j++)
{
 strcpy(a[j].dev,d[j].dev);
 a[j].b_in = d[j].b_in;
 a[j].b_out = d[j].b_out;
 a[j].p_in = d[j].p_in;
 a[j].p_out = d[j].p_out;
}
 cit();
 clear();
 refresh();
 printw("Inetrface          IN             OUT             IN            OUT\n");
 for(j=1;j<=k;j++)
 {
  printw("%s %10.2f %s %10.2f %s %10.2f %s %10.2f %s\n",d[j].dev,8*(d[j].b_in-a[j].b_in)/kb/interval,"kbps",8*(d[j].b_out-a[j].b_out)/kb/interval,"kbps",(d[j].p_in-a[j].p_in)/interval,"pps",(d[j].p_out-a[j].p_out)/interval,"pps");  
//  printf("%s %f %f %f %f\n",d[j].dev,(d[j].b_in),(d[j].b_out),(d[j].p_in),(d[j].p_out));  
  refresh();
 }
printf("---------\n");
}



int main()
{
 int q=1;
 signal(SIGALRM, siga);
 del.it_interval.tv_sec  = 1; /* intervalul in s*/
 del.it_interval.tv_usec = 0;
 del.it_value.tv_sec     = 1; /*peste cate s sa plece*/
 del.it_value.tv_usec    = 0;
 interval = del.it_interval.tv_sec;
 setitimer(ITIMER_REAL, &del, NULL);
 cit(); 
 initscr();
/* printf("IN kbps   OUT kbps    IN pps     OUT pps \n");*/
 while(q==1)
 {
 q=1;
 }
}