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http://packetstormsecurity.org/UNIX/admin/xscreensaver-4.00.tar.gz
[xscreensaver]
/
hacks
/
jigsaw.c
diff --git
a/hacks/jigsaw.c
b/hacks/jigsaw.c
index afeefc86899b57462b8366590e9929d33e3fd919..bdbe44684a79929531e4a8658e04342a276cd443 100644
(file)
--- a/
hacks/jigsaw.c
+++ b/
hacks/jigsaw.c
@@
-1,4
+1,4
@@
-/* xscreensaver, Copyright (c) 1997, 1998 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1997, 1998
, 2001
Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
@@
-190,6
+190,14
@@
jigsaw_init(Display *dpy, Window window)
x_border = (xgwa.width - (width * GRID_WIDTH)) / 2;
y_border = (xgwa.height - (height * GRID_WIDTH)) / 2;
x_border = (xgwa.width - (width * GRID_WIDTH)) / 2;
y_border = (xgwa.height - (height * GRID_WIDTH)) / 2;
+ if (width < 4 || height < 4)
+ {
+ fprintf (stderr, "%s: window too small: %dx%d (need at least %dx%d)\n",
+ progname, xgwa.width, xgwa.height,
+ GRID_WIDTH * 4, GRID_HEIGHT * 4);
+ exit (1);
+ }
+
if (!state)
state = (XPoint *) malloc(width * height * sizeof(XPoint));
gc = XCreateGC (dpy, window, 0, &gcv);
if (!state)
state = (XPoint *) malloc(width * height * sizeof(XPoint));
gc = XCreateGC (dpy, window, 0, &gcv);