/*

   * gd_security.c

   *

   * Implements buffer overflow check routines.

   *

   * Written 2004, Phil Knirsch.

   * Based on netpbm fixes by Alan Cox.

   *

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <stdio.h>

#include <stdlib.h>

#include <limits.h>

#include "gd.h"

#include "gd_errors.h"

int overflow2(int a, int b)

{

	if(a <= 0 || b <= 0) {

		gd_error_ex(GD_WARNING, "one parameter to a memory allocation multiplication is negative or zero, failing operation gracefully\n");

		return 1;

	}

	if(a > INT_MAX / b) {

		gd_error_ex(GD_WARNING, "product of memory allocation multiplication would exceed INT_MAX, failing operation gracefully\n");

		return 1;

	}

	return 0;

}