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

#define BUFFER_SIZE 64
#define MAX_SIZE BUFFER_SIZE*2

/** gcc -m32 -o intOverflow intOverflow.c **/

int vulnConcat(char ** argv){
	char buffer[MAX_SIZE] = {0};
	char command[10] = "/bin/date";
	char size = strlen(argv[1]);
	if (size >= BUFFER_SIZE){
		printf("Go home to your mother, Luke! \n");
		return 0;
	}
	strncpy(buffer, argv[1], BUFFER_SIZE);
	int i;
	for(i = 0; i < BUFFER_SIZE && argv[1][i] != '\0'; i++){
		buffer[size+i] = argv[1][i];
	}
	printf("Concatenation: %s\n", buffer);
	printf("Executing : %s\n", command);
	system(command);
	return 1;
}

int main(int argc, char ** argv){
	if(argc != 2){
		printf("RTFM,  I need one argument\n");
		return 1;
	}
	vulnConcat(argv);
	return 0;
}