*/ if (!isset($_GET['host'])) { sendError('Host missing'); } $host = $_GET['host']; if ($host == '') { sendError('Empty host'); } if (!isset($_GET['size'])) { $size = 100; } else { $size = intval($_GET['size']); } exec('ping -c 1 -w 1 -W 1 ' . escapeshellarg($host), $output, $retval); if ($retval == 0) { //all fine sendSvg($size, 'fill: green'); } else { //error sendSvg($size, 'fill: red'); } function sendSvg($size, $style) { $half = intval($size / 2); header('200 OK'); header('Content-type: image/svg+xml'); echo << XML; } function sendError($msg) { header('400 Bad Request'); header('Content-type: text/plain'); echo $msg . "\n"; exit(1); } ?>