cwe20_compliant.c

#include <stdio.h>
#include <stdlib.h>
void die(const char *s) {
  printf("%s", s);
  exit(2);
}

#define MAX_DIM 15

typedef int board_square_t;

/* board dimensions */

int main(void) {
  unsigned int m, n, error;
  board_square_t *board;
  printf("Please specify the board height: \n");
  error = scanf("%d", &m);
  if (EOF == error) {
    die("No integer passed: Die evil hacker!\n");
  }
  printf("Please specify the board width: \n");
  error = scanf("%d", &n);
  if (EOF == error) {
    die("No integer passed: Die evil hacker!\n");
  }
  if (m > MAX_DIM || m <= 0 || n > MAX_DIM) {
    die("Value too large: Die evil hacker!\n");
  }

  board = (board_square_t *)malloc(m * n * sizeof(board_square_t));

  // Check that is memory is properly allocated
  if (!board) {
    return 2;
  }

  for (unsigned int i = 0; i < m; i++) {
    for (unsigned int j = 0; j < n; j++) {
      board[n * i + j] = 0;
    }
  }

  //@ split m == 0;
  if (board[(m - 1) * n] == 0)
    return 0;
  else
    return 1;
}