remove image.php; put cached image endpoint to public.php

classes/handler/public.php

@@ -1002,5 +1002,36 @@ class Handler_Public extends Handler {
 		<?php
 	}
 
+	function cached_image() {
+		@$hash = basename($_GET['hash']);
+
+		if ($hash) {
+
+			$filename = CACHE_DIR . '/images/' . $hash . '.png';
+
+			if (file_exists($filename)) {
+				/* See if we can use X-Sendfile */
+				$xsendfile = false;
+				if (function_exists('apache_get_modules') &&
+				    array_search('mod_xsendfile', apache_get_modules()))
+					$xsendfile = true;
+
+				if ($xsendfile) {
+					header("X-Sendfile: $filename");
+					header("Content-type: application/octet-stream");
+					header('Content-Disposition: attachment; filename="' . basename($filename) . '"');
+				} else {
+					header("Content-type: image/png");
+					$stamp = gmdate("D, d M Y H:i:s", filemtime($filename)). " GMT";
+					header("Last-Modified: $stamp", true);
+					readfile($filename);
+				}
+			} else {
+				header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
+				echo "File not found.";
+			}
+		}
+	}
+
 }
 ?>