X-Git-Url: https://git.bts.cx/cx.git/blobdiff_plain/326cc7d316faee2371e3b7d62e61b5158c681649..HEAD:/cx/lib/template.php?ds=sidebyside

diff --git a/cx/lib/template.php b/cx/lib/template.php
index 6826d16..638c600 100644
--- a/cx/lib/template.php
+++ b/cx/lib/template.php
@@ -9,10 +9,10 @@ function cx_template_content_path($class, $path) {
 }
 
 function cx_template_has_content($class, $path) {
-	return file_exists(cx_template_content_path($class, $path));
+	return is_file(cx_template_content_path($class, $path));
 }
 
-function cx_template_output_content($class, $path) {
+function cx_template_output_content($class, $path, $cache_age = 30 * 86400) {
 	$full_path = cx_template_content_path($class, $path);
 
 	$extension = pathinfo($path, PATHINFO_EXTENSION);
@@ -25,8 +25,22 @@ function cx_template_output_content($class, $path) {
 		//finfo_close($finfo); - Deprecated
 	}
 
+	$file_size = filesize($full_path);
+	$file_modified_time = filemtime($full_path);
+
 	header('Content-Type: ' . $mime_type);
-	header('Content-Length: ' . filesize($full_path));
+	header('Content-Length: ' . $file_size);
+	header('Cache-Control: public, max-age=604800');
+	header('Expires: ' . gmdate('D, d M Y H:i:s', time() + $cache_age) . ' GMT');
+	header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $file_modified_time) . ' GMT');
+
+	if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
+		$request_modification = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']);
+		if ($request_modification >= $file_modified_time) {
+			http_response_code(304);
+			return;
+		}
+	}
 
 	$fp = fopen($full_path, 'rb');
 	fpassthru($fp);