Check for overlong (but otherwise valid) sections.

gsnedders · Mar 16, 2010 · c39be86 · c39be86
1 parent 74a182a
commit c39be86
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/net_ipv6.php b/src/net_ipv6.php
@@ -180,6 +180,10 @@ public static function check_ipv6($ip)
                 if ($ipv6_part === '')
                     return false;
 
+                // Nor can it be over four characters
+                if (strlen($ipv6_part) > 4)
+                    return false;
+
                 // Remove leading zeros (this is safe because of the above)
                 $ipv6_part = ltrim($ipv6_part, '0');
                 if ($ipv6_part === '')