ref: da220a77d1793edd14144fd96584b7f461f06dfb
parent: 26d0633f87ccdbaf7035e2e14d9dfbfd7f379527
author: Ben Harris <[email protected]>
date: Tue Jan 10 16:20:35 EST 2023
Last-ditch grid-size limit for Flood At least prevent integer overflow when constructing the grid.
--- a/flood.c
+++ b/flood.c
@@ -31,6 +31,7 @@
#include <string.h>
#include <assert.h>
#include <ctype.h>
+#include <limits.h>
#include <math.h>
#include "puzzles.h"
@@ -209,6 +210,8 @@
{
if (params->w < 2 && params->h < 2)
return "Grid must contain at least two squares";
+ if (params->w > INT_MAX / params->h)
+ return "Width times height must not be unreasonably large";
if (params->colours < 3 || params->colours > 10)
return "Must have between 3 and 10 colours";
if (params->leniency < 0)