diff options
Diffstat (limited to 'engine/handlers/cache_handler.php')
| -rw-r--r-- | engine/handlers/cache_handler.php | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/engine/handlers/cache_handler.php b/engine/handlers/cache_handler.php index 7d6f42dc3..36fc665bb 100644 --- a/engine/handlers/cache_handler.php +++ b/engine/handlers/cache_handler.php @@ -60,38 +60,46 @@ preg_match($regex, $request, $matches); $type = $matches[1]; $viewtype = $matches[2]; $view = $matches[3]; +$ts = $matches[4]; + +// If is the same ETag, content didn't changed. +$etag = $ts; +if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == "\"$etag\"") { + header("HTTP/1.1 304 Not Modified"); + exit; +} switch ($type) { case 'css': header("Content-type: text/css", true); - header('Expires: ' . date('r', time() + 86400000), true); - header("Pragma: public", true); - header("Cache-Control: public", true); - $view = "css/$view"; break; case 'js': header('Content-type: text/javascript', true); - header('Expires: ' . date('r', time() + 864000000), true); - header("Pragma: public", true); - header("Cache-Control: public", true); - $view = "js/$view"; break; } +header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', strtotime("+6 months")), true); +header("Pragma: public", true); +header("Cache-Control: public", true); +header("ETag: \"$etag\""); + $filename = $dataroot . 'views_simplecache/' . md5($viewtype . $view); if (file_exists($filename)) { - $contents = file_get_contents($filename); + readfile($filename); } else { // someone trying to access a non-cached file or a race condition with cache flushing mysql_close($mysql_dblink); require_once(dirname(dirname(__FILE__)) . "/start.php"); - elgg_regenerate_simplecache(); + + global $CONFIG; + if (!in_array($view, $CONFIG->views->simplecache)) { + header("HTTP/1.1 404 Not Found"); + exit; + } elgg_set_viewtype($viewtype); - $contents = elgg_view($view); + echo elgg_view($view); } - -echo $contents; |