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ref: 8c5279cf75e41f1ae75b2daf0d06c883a5ae0bca
parent: 0dbbd52935b8b17b3b3ab3d9ae6271cde891f70b
author: Ben Harris <[email protected]>
date: Sat Jan 7 18:24:39 EST 2023

Same Game: reject moves with unexpected characters in

Previously if a move string starting with "M" contained anything else
other than a digit or a comma, execute_move() would spin trying to
parse it.  Now it returns NULL.

--- a/samegame.c

+++ b/samegame.c

@@ -1346,6 +1346,10 @@

 	move++;

 	while (*move) {

+            if (!isdigit((unsigned char)*move)) {

+                free_game(ret);

+                return NULL;

+            }

 	    i = atoi(move);

 	    if (i < 0 || i >= ret->n) {

 		free_game(ret);