/***************************************************************************
 *  ISA 563
 *  Example target of 'attacker'
 *
 *  Copyleft by Muhammad Abdulla
 *
 **************************************************************************/

/*
 * ISA 563, Spring 2011
 * Copyleft by Muhammad Abdulla
 */

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

#define CRASH "crash"

void crash()
{
   fprintf(stderr, "crashing ...\n");
   exit(-1);
}


#include <stdio.h>

/*
 * argtest.c -- demonstrates how to access argument line arguments
 */

int main (int argc, char *argv[] )
{
   int i;

   // print the number of arguments first
   printf("This program is called with %d argument%c\n", argc, argc == 1 ? '\0' : 's');

   // print all the arguments that are accessable
   for ( i = 0; i < argc; i++ ) {
      printf("argument[%d]: ", i);             

      printf(argv[i]);    // this is NOT secure
      // printf("%s", argv[i]); // this is more secure

      printf("\n");

      // crash if the second argument "special" 
      if ( i == 2 && strncmp(argv[i], CRASH, strlen(CRASH)) == 0 ) {
         crash();
      }

   }

   return 0;
}